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\"leaf_all.hpp\"\n\n#include \n#include \n#include \n#include \n#include \n//#include \n#include \n#include \n#include \n\nnamespace asio = boost::asio;\nnamespace leaf = boost::leaf;\n\nstruct e_failure_info {\n std::string value;\n};\n\nenum custom_error_code { first_error = 1, second_error };\nnamespace boost {\nnamespace leaf {\ntemplate <> struct is_error_type : std::true_type {};\ntemplate <> struct is_error_type : std::true_type {};\n} // namespace leaf\n} // namespace boost\n\nvoid f1(unsigned behavior) {\n [[maybe_unused]] auto propagate = leaf::preload(e_failure_info{\"f1\"});\n switch (behavior) {\n case 0:\n return;\n case 1:\n throw std::runtime_error(\"f1-1\");\n case 2:\n throw std::bad_alloc();\n default:\n break;\n }\n}\n\nleaf::result f2(unsigned behavior) {\n if (behavior == 0) {\n return leaf::new_error(first_error);\n }\n if (behavior == 1) {\n throw std::runtime_error(\"f2-1\");\n }\n\n [[maybe_unused]] auto propagate = leaf::preload(e_failure_info{\"f2\"});\n switch (behavior) {\n case 0:\n break;\n case 1:\n break;\n case 2:\n return leaf::new_error(second_error);\n case 3:\n throw std::runtime_error(\"f2-2\");\n case 4:\n return leaf::new_error(std::make_error_code(std::errc::address_in_use));\n default:\n f1(behavior - 5);\n break;\n }\n return behavior;\n}\n\nstruct async_operation {\n private:\n template static decltype(auto) get_executor(asio::io_context &io_context, Handler &h) {\n return asio::get_associated_executor(h, io_context.get_executor());\n }\n\n public:\n template static void start(asio::io_context &io_context, unsigned behavior, Handler &&h) {\n asio::post(io_context,\n asio::bind_executor(get_executor(io_context, h), [behavior, h = std::forward(h)]() mutable {\n execute(behavior, std::move(h));\n }));\n }\n\n private:\n template static void execute(unsigned behavior, Handler &&h) {\n#if 1\n auto result = leaf::capture_result(\n [behavior]() -> leaf::result { return f2(behavior); });\n h(result());\n#else\n leaf::result result = leaf::try_([behavior]() -> leaf::result {\n LEAF_AUTO(r, f2(behavior));\n return r;\n },\n [](leaf::error_info const &e) -> leaf::result {\n return e.error();\n });\n h(result);\n#endif\n }\n};\n\nint main() {\n for (unsigned i = 0; i < 10; ++i) {\n asio::io_context io_context;\n std::cout << \"\\nf2(\" << i << \")\" << std::endl;\n async_operation::start(io_context, i, [](leaf::result result) {\n leaf::try_(\n [&result]() -> leaf::result {\n LEAF_CHECK(result);\n std::cout << \"Success\" << std::endl;\n return {};\n },\n [](leaf::catch_ e, e_failure_info const &info) -> leaf::result {\n std::cout << \"Error: runtime_error: \" << e.value.what() << \", info: \" << info.value << std::endl;\n return {};\n },\n [](leaf::catch_ e) -> leaf::result {\n std::cout << \"Error: runtime_error: \" << e.value.what() << std::endl;\n return {};\n },\n [](custom_error_code ec, e_failure_info const &info) -> leaf::result {\n std::cout << \"Error: code: \" << ec << \", info: \" << info.value << std::endl;\n return {};\n },\n [](custom_error_code ec) -> leaf::result {\n std::cout << \"Error: code: \" << ec << std::endl;\n return {};\n },\n [](leaf::error_info const &e /*, leaf::verbose_diagnostic_info const *v*/) -> leaf::result {\n std::cout << \"Error: unmatched error, what: \"\n << (e.has_exception() ? e.exception()->what() : \"\") << std::endl;\n /*if (v) {\n std::cout << \"Error: verbose-info: \" << *v << std::endl;\n }*/\n return {};\n });\n });\n io_context.run();\n }\n return 0;\n}\n","codes",[3388],{"_3389":3390,"_3384":3391},"file","leaf_all.hpp","\n//>>>>>>>>\n//boost/leaf/all.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/all.hpp\"\n#ifndef BOOST_LEAF_3382F652FCDD11E8AAD1CCB3642D5A5F\n#define BOOST_LEAF_3382F652FCDD11E8AAD1CCB3642D5A5F\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/capture_exception.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/capture_exception.hpp\"\n#ifndef BOOST_LEAF_BC24FB98B2DE11E884419CF5AD35F1A2\n#define BOOST_LEAF_BC24FB98B2DE11E884419CF5AD35F1A2\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/detail/captured_exception.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/captured_exception.hpp\"\n#ifndef BOOST_LEAF_E32F3CCC139011E995085E318C7F4AFC\n#define BOOST_LEAF_E32F3CCC139011E995085E318C7F4AFC\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\tclass captured_exception:\n\t\t\tpublic std::exception\n\t\t{\n\t\tprotected:\n\n\t\t\tcaptured_exception() noexcept\n\t\t\t{\n\t\t\t}\n\n\t\t\t~captured_exception() noexcept\n\t\t\t{\n\t\t\t}\n\n\t\tpublic:\n\n\t\t\t[[noreturn]] virtual void unload_and_rethrow_original_exception() = 0;\n\t\t\tvirtual void print( std::ostream & ) const = 0;\n\t\t};\n\t}\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/captured_exception.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/detail/dynamic_store_impl.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/dynamic_store_impl.hpp\"\n#ifndef BOOST_LEAF_C86E4C4ED0F011E8BB777EB8A659E189\n#define BOOST_LEAF_C86E4C4ED0F011E8BB777EB8A659E189\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/detail/dynamic_store.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/dynamic_store.hpp\"\n#ifndef BOOST_LEAF_6CCC5F56124B11E9B6C4CB8C8C7F4AFC\n#define BOOST_LEAF_6CCC5F56124B11E9B6C4CB8C8C7F4AFC\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\tclass dynamic_store\n\t\t{\n\t\tprotected:\n\n\t\t\tdynamic_store() noexcept\n\t\t\t{\n\t\t\t}\n\n\t\t\t~dynamic_store() noexcept\n\t\t\t{\n\t\t\t}\n\n\t\tpublic:\n\n\t\t\tvirtual int err_id() const noexcept = 0;\n\t\t\tvirtual int unload() noexcept = 0;\n\t\t\tvirtual int unload( int error_code ) noexcept = 0;\n\t\t};\n\t}\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/dynamic_store.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/detail/static_store.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/static_store.hpp\"\n#ifndef BOOST_LEAF_AFBBD676B2FF11E8984C7976AE35F1A2\n#define BOOST_LEAF_AFBBD676B2FF11E8984C7976AE35F1A2\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/detail/teleport.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/teleport.hpp\"\n#ifndef BOOST_LEAF_B449A5821DA411E99B9A012588D1CC0E\n#define BOOST_LEAF_B449A5821DA411E99B9A012588D1CC0E\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/detail/optional.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/optional.hpp\"\n#ifndef BOOST_LEAF_47258FCCB6B411E8A1F35AA00C39171A\n#define BOOST_LEAF_47258FCCB6B411E8A1F35AA00C39171A\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tclass optional\n\t\t{\n\t\t\tunion { T value_; };\n\t\t\tbool has_value_;\n\n\t\tpublic:\n\n\t\t\ttypedef T value_type;\n\t\t\toptional() noexcept:\n\t\t\t\thas_value_(false)\n\t\t\t{\n\t\t\t}\n\n\t\t\toptional( optional const & x ):\n\t\t\t\thas_value_(x.has_value_)\n\t\t\t{\n\t\t\t\tif( x.has_value_ )\n\t\t\t\t\t(void) new (&value_) T( x.value_ );\n\t\t\t}\n\n\t\t\toptional( optional && x ) noexcept:\n\t\t\t\thas_value_(x.has_value_)\n\t\t\t{\n\t\t\t\tif( x.has_value_ )\n\t\t\t\t{\n\t\t\t\t\t(void) new (&value_) T( std::move(x.value_) );\n\t\t\t\t\tx.value_.~T();\n\t\t\t\t\tx.has_value_ = false;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\toptional( T const & v ):\n\t\t\t\tvalue_(v),\n\t\t\t\thas_value_(true)\n\t\t\t{\n\t\t\t}\n\n\t\t\toptional( T && v ) noexcept:\n\t\t\t\tvalue_(std::move(v)),\n\t\t\t\thas_value_(true)\n\t\t\t{\n\t\t\t}\n\n\t\t\toptional & operator=( optional const & x )\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\tif( x.has_value() )\n\t\t\t\t\tput(x.value());\n\t\t\t\treturn *this;\n\t\t\t}\n\n\t\t\toptional & operator=( optional && x ) noexcept\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\tif( x.has_value() )\n\t\t\t\t\tput(std::move(x).value());\n\t\t\t\treturn *this;\n\t\t\t}\n\n\t\t\t~optional() noexcept\n\t\t\t{\n\t\t\t\treset();\n\t\t\t}\n\n\t\t\tvoid reset() noexcept\n\t\t\t{\n\t\t\t\tif( has_value() )\n\t\t\t\t{\n\t\t\t\t\tvalue_.~T();\n\t\t\t\t\thas_value_=false;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\ttemplate \n\t\t\tT & emplace( A && ... a )\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(std::forward(a)...);\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & put( T const & v )\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(v);\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & put( T && v ) noexcept\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(std::move(v));\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT const * has_value() const noexcept\n\t\t\t{\n\t\t\t\treturn has_value_ ? &value_ : 0;\n\t\t\t}\n\n\t\t\tT * has_value() noexcept\n\t\t\t{\n\t\t\t\treturn has_value_ ? &value_ : 0;\n\t\t\t}\n\n\t\t\tT const & value() const & noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & value() & noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT const && value() const && noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT value() && noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\tT tmp(std::move(value_));\n\t\t\t\treset();\n\t\t\t\treturn tmp;\n\t\t\t}\n\t\t};\n\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/optional.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/detail/print.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/print.hpp\"\n#ifndef BOOST_LEAF_3BAB50A2B87E11E89EEB30600C39171A\n#define BOOST_LEAF_3BAB50A2B87E11E89EEB30600C39171A\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tinline char const * check_prefix( char const * t, char const (&prefix)[N] )\n\t\t{\n\t\t\treturn std::strncmp(t,prefix,sizeof(prefix)-1)==0 ? t+sizeof(prefix)-1 : t;\n\t\t}\n\t}\n\n\ttemplate \n\tchar const * type() noexcept\n\t{\n\tchar const * t =\n#ifdef __FUNCSIG__\n\t\t__FUNCSIG__;\n#else\n\t\t__PRETTY_FUNCTION__;\n#endif\n#if defined(__clang__)\n\t\tassert(leaf_detail::check_prefix(t,\"const char *boost::leaf::type() \")==t+32);\n\t\treturn t+32;\n#elif defined(__GNUC__)\n\t\tassert(leaf_detail::check_prefix(t,\"const char* boost::leaf::type() \")==t+32);\n\t\treturn t+32;\n#else\n\t\tchar const * clang_style = leaf_detail::check_prefix(t,\"const char *boost::leaf::type() \");\n\t\tif( clang_style!=t )\n\t\t\treturn clang_style;\n\t\tchar const * gcc_style = leaf_detail::check_prefix(t,\"const char* boost::leaf::type() \");\n\t\tif( gcc_style!=t )\n\t\t\treturn gcc_style;\n#endif\n\t\treturn t;\n\t}\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct is_printable: std::false_type\n\t\t{\n\t\t};\n\n\t\ttemplate \n\t\tstruct is_printable()<(), void())>: std::true_type\n\t\t{\n\t\t};\n\n\t\t////////////////////////////////////////\n\n\t\ttemplate \n\t\tstruct has_printable_member_value: std::false_type\n\t\t{\n\t\t};\n\n\t\ttemplate \n\t\tstruct has_printable_member_value()<().value, void())>: std::true_type\n\t\t{\n\t\t};\n\n\t\t////////////////////////////////////////\n\n\t\ttemplate ::value, bool ValuePrintable=has_printable_member_value::value>\n\t\tstruct diagnostic;\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & x )\n\t\t\t{\n\t\t\t\tos << x;\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & x )\n\t\t\t{\n\t\t\t\tos << type() << \": \" << x.value;\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & )\n\t\t\t{\n\t\t\t\tos << type() << \": N/A\";\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, std::exception_ptr const & )\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/print.hpp\n//<<<<<<<<\n#include \n#include \n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\tclass id_factory\n\t\t{\n\t\t\tid_factory( id_factory const & ) = delete;\n\t\t\tid_factory & operator=( id_factory const & ) = delete;\n\n\t\t\tstatic int new_err_id() noexcept\n\t\t\t{\n\t\t\t\tstatic std::atomic c;\n\t\t\t\tif( unsigned id = ++c )\n\t\t\t\t\treturn int(id);\n\t\t\t\telse\n\t\t\t\t\treturn int(++c);\n\t\t\t}\n\n\t\t\tint next_id_;\n\t\t\tint last_id_;\n\n\t\t\tid_factory() noexcept:\n\t\t\t\tnext_id_(new_err_id()),\n\t\t\t\tlast_id_(next_id_-1)\n\t\t\t{\n\t\t\t}\n\n\t\tpublic:\n\n\t\t\tstatic id_factory & tl_instance() noexcept\n\t\t\t{\n\t\t\t\tstatic thread_local id_factory s;\n\t\t\t\treturn s;\n\t\t\t}\n\n\t\t\tint last_id() noexcept\n\t\t\t{\n\t\t\t\treturn last_id_;\n\t\t\t}\n\n\t\t\tint new_id() noexcept\n\t\t\t{\n\t\t\t\tint id = last_id_ = next_id_;\n\t\t\t\tnext_id_ = new_err_id();\n\t\t\t\treturn id;\n\t\t\t}\n\n\t\t\tint next_id() noexcept\n\t\t\t{\n\t\t\t\treturn next_id_;\n\t\t\t}\n\t\t};\n\n\t\tinline int last_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().last_id();\n\t\t}\n\n\t\tinline int new_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().new_id();\n\t\t}\n\n\t\tinline int next_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().next_id();\n\t\t}\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\tclass slot_base\n\t\t{\n\t\t\tslot_base( slot_base const & ) = delete;\n\t\t\tslot_base & operator=( slot_base const & ) = delete;\n\n\t\t\tvirtual bool slot_print( std::ostream &, int err_id ) const = 0;\n\n\t\tpublic:\n\n\t\t\tstatic void print( std::ostream & os, int err_id )\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t\tfor( slot_base const * p = first(); p; p=p->next_ )\n\t\t\t\t\tif( p->slot_print(os,err_id) )\n\t\t\t\t\t\tos << std::endl;\n\t\t\t}\n\n\t\tprotected:\n\n\t\t\tstatic slot_base const * & first() noexcept\n\t\t\t{\n\t\t\t\tstatic thread_local slot_base const * p = 0;\n\t\t\t\treturn p;\n\t\t\t}\n\n\t\t\tslot_base const * const next_;\n\n\t\t\tslot_base() noexcept:\n\t\t\t\tnext_(first())\n\t\t\t{\n\t\t\t\tfirst() = this;\n\t\t\t}\n\n\t\t\t~slot_base() noexcept\n\t\t\t{\n\t\t\t\tslot_base const * & p = first();\n\t\t\t\tassert(p==this);\n\t\t\t\tp = next_;\n\t\t\t}\n\t\t};\n\t}\n\n\t////////////////////////////////////////\n\n\tclass error_id;\n\tnamespace leaf_detail { class captured_exception; }\n\n\tclass error_info\n\t{\n\t\terror_info( error_info const & ) = delete;\n\t\terror_info & operator=( error_info const & ) = delete;\n\n\t\tint const err_id_;\n\t\tstd::exception const * const ex_;\n\t\tleaf_detail::captured_exception const * const cap_;\n\t\tvoid (* const print_ex_)( std::ostream &, std::exception const *, leaf_detail::captured_exception const * );\n\n\tpublic:\n\n\t\texplicit error_info( int err_id ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(0),\n\t\t\tcap_(0),\n\t\t\tprint_ex_(0)\n\t\t{\n\t\t}\n\n\t\terror_info( int err_id, std::exception const * ex, void (*print_ex)(std::ostream &, std::exception const *, leaf_detail::captured_exception const *) ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(ex),\n\t\t\tcap_(0),\n\t\t\tprint_ex_(print_ex)\n\t\t{\n\t\t\tassert(print_ex_!=0);\n\t\t}\n\n\t\terror_info( int err_id, std::exception const * ex, leaf_detail::captured_exception const * cap, void (*print_ex)(std::ostream &, std::exception const *, leaf_detail::captured_exception const *) ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(ex),\n\t\t\tcap_(cap),\n\t\t\tprint_ex_(print_ex)\n\t\t{\n\t\t\tassert(print_ex_!=0);\n\t\t}\n\n\t\tint err_id() const noexcept\n\t\t{\n\t\t\treturn err_id_;\n\t\t}\n\n\t\tbool has_error() const noexcept\n\t\t{\n\t\t\treturn err_id_!=0;\n\t\t}\n\n\t\terror_id error() const noexcept;\n\n\t\tbool has_exception() const noexcept\n\t\t{\n\t\t\treturn print_ex_!=0;\n\t\t}\n\n\t\tstd::exception const * exception() const noexcept\n\t\t{\n\t\t\tassert(has_exception());\n\t\t\treturn ex_;\n\t\t}\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, error_info const & x )\n\t\t{\n\t\t\tos << \"LEAF Error ID: \" << x.err_id_ << std::endl;\n\t\t\tif( x.print_ex_ )\n\t\t\t\tx.print_ex_(os,x.ex_,x.cap_);\n\t\t\tleaf_detail::slot_base::print(os,x.err_id_);\n\t\t\treturn os;\n\t\t}\n\t};\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct has_data_member_value\n\t\t{\n\t\t\tstatic constexpr bool value=false;\n\t\t};\n\n\t\ttemplate \n\t\tstruct has_data_member_value().value, void())>\n\t\t{\n\t\t\tstatic constexpr bool value=std::is_member_object_pointer::value;\n\t\t};\n\n\t\ttemplate \n\t\tstruct is_error_type_default\n\t\t{\n\t\t\tstatic constexpr bool value = has_data_member_value::value || std::is_base_of::value;\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\t}\n\n\ttemplate \n\tstruct is_error_type: leaf_detail::is_error_type_default\n\t{\n\t};\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\tclass monitor_base\n\t\t{\n\t\t\tmonitor_base( monitor_base const & ) = delete;\n\t\t\tmonitor_base & operator=( monitor_base const & ) = delete;\n\n\t\t\tmutable error_info const * ei_;\n\n\t\tprotected:\n\n\t\t\tmonitor_base() noexcept:\n\t\t\t\tei_(0)\n\t\t\t{\n\t\t\t}\n\n\t\t\tmonitor_base( monitor_base && x ) noexcept:\n\t\t\t\tei_(0)\n\t\t\t{\n\t\t\t\tx.ei_ = 0;\n\t\t\t}\n\n\t\t\tvoid set_error_info( error_info const & ei ) const noexcept\n\t\t\t{\n\t\t\t\tei_ = &ei;\n\t\t\t}\n\n\t\t\terror_info const & get_error_info() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn *ei_;\n\t\t\t}\n\n\t\tpublic:\n\n\t\t\tbool has_error() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->has_error();\n\t\t\t}\n\n\t\t\terror_id error() const noexcept;\n\n\t\t\tbool has_exception() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->has_exception();\n\t\t\t}\n\n\t\t\tstd::exception const * exception() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->exception();\n\t\t\t}\n\t\t};\n\t}\n\n\tclass diagnostic_info: leaf_detail::monitor_base\n\t{\n\tpublic:\n\n\t\tchar const * (*first_type)();\n\t\tint count;\n\n\t\texplicit diagnostic_info( char const * (*first_type)() ) noexcept:\n\t\t\tfirst_type(first_type),\n\t\t\tcount(1)\n\t\t{\n\t\t}\n\n\t\tusing monitor_base::set_error_info;\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, diagnostic_info const & x )\n\t\t{\n\t\t\tassert(x.first_type!=0);\n\t\t\tassert(x.count>0);\n\t\t\tos << x.get_error_info() << \"diagnostic_info: Detected \";\n\t\t\tif( x.count==1 )\n\t\t\t\tos << \"1 attempt to communicate an E-object\";\n\t\t\telse\n\t\t\t\tos << x.count << \" attempts to communicate unexpected E-objects, the first one\";\n\t\t\treturn os << \" of type \" << x.first_type() << std::endl;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, diagnostic_info const & ) noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t}\n\n\tclass verbose_diagnostic_info: leaf_detail::monitor_base\n\t{\n\t\tstd::string s_;\n\t\tstd::set already_;\n\n\tpublic:\n\n\t\tverbose_diagnostic_info() noexcept\n\t\t{\n\t\t}\n\n\t\tusing monitor_base::set_error_info;\n\n\t\tvoid reset() noexcept\n\t\t{\n\t\t\ts_.clear();\n\t\t\talready_.clear();\n\t\t}\n\n\t\ttemplate \n\t\tvoid add( E const & e )\n\t\t{\n\t\t\tstd::stringstream s;\n\t\t\tif( leaf_detail::diagnostic::print(s,e) && already_.insert(&type).second )\n\t\t\t{\n\t\t\t\ts << std::endl;\n\t\t\t\ts_ += s.str();\n\t\t\t}\n\t\t}\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, verbose_diagnostic_info const & x )\n\t\t{\n\t\t\tos <<\n\t\t\t\tx.get_error_info() <<\n\t\t\t\t\"verbose_diagnostic_info:\" << std::endl <<\n\t\t\t\tx.s_;\n\t\t\treturn os;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, verbose_diagnostic_info const & ) noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct id_e_pair\n\t\t{\n\t\t\tint err_id;\n\t\t\tE e;\n\n\t\t\texplicit id_e_pair( int err_id ) noexcept:\n\t\t\t\terr_id(err_id)\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\n\t\t\tid_e_pair( int err_id, E const & e ):\n\t\t\t\terr_id(err_id),\n\t\t\t\te(e)\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\n\t\t\tid_e_pair( int err_id, E && e ) noexcept:\n\t\t\t\terr_id(err_id),\n\t\t\t\te(std::forward(e))\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\t\t};\n\n\t\tinline int & tl_unexpected_enabled_counter() noexcept\n\t\t{\n\t\t\tstatic thread_local int c;\n\t\t\treturn c;\n\t\t}\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tclass slot:\n\t\t\tslot_base,\n\t\t\toptional>\n\t\t{\n\t\t\tslot( slot const & ) = delete;\n\t\t\tslot & operator=( slot const & ) = delete;\n\t\t\ttypedef optional> base;\n\t\t\tslot * prev_;\n\t\t\tstatic_assert(is_error_type::value,\"Not an error type\");\n\n\t\t\tbool slot_print( std::ostream &, int err_id ) const;\n\n\t\tprotected:\n\n\t\t\tslot() noexcept;\n\t\t\t~slot() noexcept;\n\n\t\tpublic:\n\n\t\t\tusing base::put;\n\t\t\tusing base::has_value;\n\t\t\tusing base::value;\n\t\t\tusing base::reset;\n\t\t\tusing base::emplace;\n\t\t};\n\n\t\ttemplate \n\t\tslot * & tl_slot_ptr() noexcept\n\t\t{\n\t\t\tstatic thread_local slot * s;\n\t\t\treturn s;\n\t\t}\n\n\t\ttemplate \n\t\tvoid put_unexpected( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tif( slot * p = tl_slot_ptr() )\n\t\t\t{\n\t\t\t\tif( p->has_value() )\n\t\t\t\t{\n\t\t\t\t\tauto & p_id_e = p->value();\n\t\t\t\t\tif( p_id_e.err_id==id_e.err_id )\n\t\t\t\t\t{\n\t\t\t\t\t\t++p_id_e.e.count;\n\t\t\t\t\t\treturn;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\t(void) p->put( id_e_pair(id_e.err_id,diagnostic_info(&type)) );\n\t\t\t}\n\t\t}\n\n\t\ttemplate \n\t\tvoid put_verbose_diagnostic_info( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tif( slot * sl = tl_slot_ptr() )\n\t\t\t{\n\t\t\t\tif( auto * pv = sl->has_value() )\n\t\t\t\t{\n\t\t\t\t\tif( pv->err_id!=id_e.err_id )\n\t\t\t\t\t{\n\t\t\t\t\t\tpv->err_id = id_e.err_id;\n\t\t\t\t\t\tpv->e.reset();\n\t\t\t\t\t}\n\t\t\t\t\tpv->e.add(id_e.e);\n\t\t\t\t}\n\t\t\t\telse\n\t\t\t\t\tsl->emplace(id_e.err_id).e.add(id_e.e);\n\t\t\t}\n\t\t}\n\n\t\ttemplate \n\t\tvoid no_expect_slot( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tput_unexpected(id_e);\n\t\t\tput_verbose_diagnostic_info(id_e);\n\t\t}\n\n\t\ttemplate \n\t\tint put_slot( int err_id, E && e ) noexcept\n\t\t{\n\t\t\tusing T = typename std::remove_cv::type>::type;\n\t\t\tassert(err_id);\n\t\t\tif( slot * p = tl_slot_ptr() )\n\t\t\t\t(void) p->put( id_e_pair(err_id,std::forward(e)) );\n\t\t\telse\n\t\t\t{\n\t\t\t\tint c = tl_unexpected_enabled_counter();\n\t\t\t\tassert(c>=0);\n\t\t\t\tif( c )\n\t\t\t\t\tno_expect_slot( id_e_pair(err_id,std::forward(e)) );\n\t\t\t}\n\t\t\treturn 0;\n\t\t}\n\n\t\ttemplate \n\t\tslot::slot() noexcept\n\t\t{\n\t\t\tslot * & p = tl_slot_ptr();\n\t\t\tprev_ = p;\n\t\t\tp = this;\n\t\t}\n\n\t\ttemplate \n\t\tslot::~slot() noexcept\n\t\t{\n\t\t\tif( prev_ )\n\t\t\t{\n\t\t\t\toptional> & p = *prev_;\n\t\t\t\tp = std::move(*this);\n\t\t\t}\n\t\t\telse\n\t\t\t{\n\t\t\t\tint c = tl_unexpected_enabled_counter();\n\t\t\t\tassert(c>=0);\n\t\t\t\tif( c && has_value() )\n\t\t\t\t\tno_expect_slot(value());\n\t\t\t}\n\t\t\ttl_slot_ptr() = prev_;\n\t\t}\n\n\t\ttemplate \n\t\tbool slot::slot_print( std::ostream & os, int err_id ) const\n\t\t{\n\t\t\tassert(err_id);\n\t\t\tif( tl_slot_ptr()==this )\n\t\t\t\tif( id_e_pair const * id_e = has_value() )\n\t\t\t\t\tif( id_e->err_id==err_id )\n\t\t\t\t\t\treturn diagnostice)>::print(os,id_e->e);\n\t\t\treturn false;\n\t\t}\n\n\t\tenum class result_variant\n\t\t{\n\t\t\tvalue,\n\t\t\terr_id,\n\t\t\tcap\n\t\t};\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/teleport.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/detail/function_traits.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/function_traits.hpp\"\n#ifndef BOOST_LEAF_14440B9CF07011E88377FD4B0ABE8030\n#define BOOST_LEAF_14440B9CF07011E88377FD4B0ABE8030\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/detail/mp11.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/mp11.hpp\"\n#ifndef BOOST_LEAF_91843B04108711E9AA4E56D98C7F4AFC\n#define BOOST_LEAF_91843B04108711E9AA4E56D98C7F4AFC\n\n// Copyright 2015-2017 Peter Dimov.\n// Copyright 2019 Emil Dotchevski.\n//\n// Distributed under the Boost Software License, Version 1.0.\n//\n// See accompanying file LICENSE_1_0.txt or copy at\n// http://www.boost.org/LICENSE_1_0.txt\n\n#include \n#include \n\nnamespace boost { namespace leaf { namespace leaf_detail_mp11 {\n\n// mp_list\ntemplate struct mp_list\n{\n};\n\n// mp_identity\ntemplate struct mp_identity\n{\n using type = T;\n};\n\n// mp_inherit\ntemplate struct mp_inherit: T... {};\n\n// mp_if, mp_if_c\nnamespace detail\n{\n\ntemplate struct mp_if_c_impl\n{\n};\n\ntemplate struct mp_if_c_impl\n{\n using type = T;\n};\n\ntemplate struct mp_if_c_impl\n{\n using type = E;\n};\n\n} // namespace detail\n\ntemplate using mp_if_c = typename detail::mp_if_c_impl::type;\ntemplate using mp_if = typename detail::mp_if_c_impl(C::value), T, E...>::type;\n\n// mp_bool\ntemplate using mp_bool = std::integral_constant;\n\nusing mp_true = mp_bool;\nusing mp_false = mp_bool;\n\n// mp_to_bool\ntemplate using mp_to_bool = mp_bool( T::value )>;\n\n// mp_not\ntemplate using mp_not = mp_bool< !T::value >;\n\n// mp_int\ntemplate using mp_int = std::integral_constant;\n\n// mp_size_t\ntemplate using mp_size_t = std::integral_constant;\n\n// mp_set_contains\nnamespace detail\n{\n\ntemplate struct mp_set_contains_impl;\n\ntemplate class L, class... T, class V> struct mp_set_contains_impl, V>\n{\n using type = mp_to_bool, mp_inherit...> > >;\n};\n\n} // namespace detail\n\ntemplate using mp_set_contains = typename detail::mp_set_contains_impl::type;\n\n// mp_set_push_back\nnamespace detail\n{\n\ntemplate struct mp_set_push_back_impl;\n\ntemplate class L, class... U> struct mp_set_push_back_impl>\n{\n using type = L;\n};\n\ntemplate class L, class... U, class T1, class... T> struct mp_set_push_back_impl, T1, T...>\n{\n using S = mp_if, T1>, L, L>;\n using type = typename mp_set_push_back_impl::type;\n};\n\n} // namespace detail\n\ntemplate using mp_set_push_back = typename detail::mp_set_push_back_impl::type;\n\n// mp_unique\nnamespace detail\n{\n\ntemplate struct mp_unique_impl;\n\ntemplate class L, class... T> struct mp_unique_impl>\n{\n using type = mp_set_push_back, T...>;\n};\n\n} // namespace detail\n\ntemplate using mp_unique = typename detail::mp_unique_impl::type;\n\n// mp_append\n\nnamespace detail\n{\n\ntemplate struct mp_append_impl;\n\ntemplate<> struct mp_append_impl<>\n{\n using type = mp_list<>;\n};\n\ntemplate class L, class... T> struct mp_append_impl>\n{\n using type = L;\n};\n\ntemplate class L1, class... T1, template class L2, class... T2, class... Lr> struct mp_append_impl, L2, Lr...>\n{\n using type = typename mp_append_impl, Lr...>::type;\n};\n\n}\n\ntemplate using mp_append = typename detail::mp_append_impl::type;\n\n// mp_front\nnamespace detail\n{\n\ntemplate struct mp_front_impl\n{\n// An error \"no type named 'type'\" here means that the argument to mp_front\n// is either not a list, or is an empty list\n};\n\ntemplate class L, class T1, class... T> struct mp_front_impl>\n{\n using type = T1;\n};\n\n} // namespace detail\n\ntemplate using mp_front = typename detail::mp_front_impl::type;\n\n// mp_pop_front\nnamespace detail\n{\n\ntemplate struct mp_pop_front_impl\n{\n// An error \"no type named 'type'\" here means that the argument to mp_pop_front\n// is either not a list, or is an empty list\n};\n\ntemplate class L, class T1, class... T> struct mp_pop_front_impl>\n{\n using type = L;\n};\n\n} // namespace detail\n\ntemplate using mp_pop_front = typename detail::mp_pop_front_impl::type;\n\n// mp_first\ntemplate using mp_first = mp_front;\n\n// mp_rest\ntemplate using mp_rest = mp_pop_front;\n\n// mp_remove_if\nnamespace detail\n{\n\ntemplate class P> struct mp_remove_if_impl;\n\ntemplate class L, class... T, template class P> struct mp_remove_if_impl, P>\n{\n template using _f = mp_if, mp_list<>, mp_list>;\n using type = mp_append, _f...>;\n};\n\n} // namespace detail\n\ntemplate class P> using mp_remove_if = typename detail::mp_remove_if_impl::type;\n\n} } }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/mp11.hpp\n//<<<<<<<<\n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tusing void_t = void;\n\n\t\ttemplate\n\t\tstruct function_traits\n\t\t{\n\t\t};\n\n\t\ttemplate\n\t\tstruct function_traits>\n\t\t{\n\t\tprivate:\n\n\t\t\ttypedef function_traits tr;\n\n\t\tpublic:\n\n\t\t\ttypedef typename tr::return_type return_type;\n\t\t\tstatic constexpr int arity = tr::arity - 1;\n\n\t\t\tusing mp_args = typename leaf_detail_mp11::mp_rest;\n\n\t\t\ttemplate \n\t\t\tstruct arg:\n\t\t\t\ttr::template arg\n\t\t\t{\n\t\t\t};\n\t\t};\n\n\t\ttemplate\n\t\tstruct function_traits\n\t\t{\n\t\t\ttypedef R return_type;\n\t\t\tstatic constexpr int arity = sizeof...(A);\n\n\t\t\tusing mp_args = leaf_detail_mp11::mp_list;\n\n\t\t\ttemplate \n\t\t\tstruct arg\n\t\t\t{\n\t\t\t\tstatic_assert(I < arity, \"I out of range\");\n\t\t\t\ttypedef typename std::tuple_element>::type type;\n\t\t\t};\n\t\t};\n\n\t\ttemplate struct function_traits : function_traits { };\n\t\ttemplate struct function_traits : function_traits { };\n\t\ttemplate struct function_traits : function_traits { };\n\t\ttemplate struct function_traits : function_traits { };\n\t\ttemplate struct function_traits : function_traits { };\n\t\ttemplate struct function_traits : function_traits { };\n\t} // namespace leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/function_traits.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/detail/mp11.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/mp11.hpp\"\n#ifndef BOOST_LEAF_91843B04108711E9AA4E56D98C7F4AFC\n#define BOOST_LEAF_91843B04108711E9AA4E56D98C7F4AFC\n\n// Copyright 2015-2017 Peter Dimov.\n// Copyright 2019 Emil Dotchevski.\n//\n// Distributed under the Boost Software License, Version 1.0.\n//\n// See accompanying file LICENSE_1_0.txt or copy at\n// http://www.boost.org/LICENSE_1_0.txt\n\n#include \n#include \n\nnamespace boost { namespace leaf { namespace leaf_detail_mp11 {\n\n// mp_list\ntemplate struct mp_list\n{\n};\n\n// mp_identity\ntemplate struct mp_identity\n{\n using type = T;\n};\n\n// mp_inherit\ntemplate struct mp_inherit: T... {};\n\n// mp_if, mp_if_c\nnamespace detail\n{\n\ntemplate struct mp_if_c_impl\n{\n};\n\ntemplate struct mp_if_c_impl\n{\n using type = T;\n};\n\ntemplate struct mp_if_c_impl\n{\n using type = E;\n};\n\n} // namespace detail\n\ntemplate using mp_if_c = typename detail::mp_if_c_impl::type;\ntemplate using mp_if = typename detail::mp_if_c_impl(C::value), T, E...>::type;\n\n// mp_bool\ntemplate using mp_bool = std::integral_constant;\n\nusing mp_true = mp_bool;\nusing mp_false = mp_bool;\n\n// mp_to_bool\ntemplate using mp_to_bool = mp_bool( T::value )>;\n\n// mp_not\ntemplate using mp_not = mp_bool< !T::value >;\n\n// mp_int\ntemplate using mp_int = std::integral_constant;\n\n// mp_size_t\ntemplate using mp_size_t = std::integral_constant;\n\n// mp_set_contains\nnamespace detail\n{\n\ntemplate struct mp_set_contains_impl;\n\ntemplate class L, class... T, class V> struct mp_set_contains_impl, V>\n{\n using type = mp_to_bool, mp_inherit...> > >;\n};\n\n} // namespace detail\n\ntemplate using mp_set_contains = typename detail::mp_set_contains_impl::type;\n\n// mp_set_push_back\nnamespace detail\n{\n\ntemplate struct mp_set_push_back_impl;\n\ntemplate class L, class... U> struct mp_set_push_back_impl>\n{\n using type = L;\n};\n\ntemplate class L, class... U, class T1, class... T> struct mp_set_push_back_impl, T1, T...>\n{\n using S = mp_if, T1>, L, L>;\n using type = typename mp_set_push_back_impl::type;\n};\n\n} // namespace detail\n\ntemplate using mp_set_push_back = typename detail::mp_set_push_back_impl::type;\n\n// mp_unique\nnamespace detail\n{\n\ntemplate struct mp_unique_impl;\n\ntemplate class L, class... T> struct mp_unique_impl>\n{\n using type = mp_set_push_back, T...>;\n};\n\n} // namespace detail\n\ntemplate using mp_unique = typename detail::mp_unique_impl::type;\n\n// mp_append\n\nnamespace detail\n{\n\ntemplate struct mp_append_impl;\n\ntemplate<> struct mp_append_impl<>\n{\n using type = mp_list<>;\n};\n\ntemplate class L, class... T> struct mp_append_impl>\n{\n using type = L;\n};\n\ntemplate class L1, class... T1, template class L2, class... T2, class... Lr> struct mp_append_impl, L2, Lr...>\n{\n using type = typename mp_append_impl, Lr...>::type;\n};\n\n}\n\ntemplate using mp_append = typename detail::mp_append_impl::type;\n\n// mp_front\nnamespace detail\n{\n\ntemplate struct mp_front_impl\n{\n// An error \"no type named 'type'\" here means that the argument to mp_front\n// is either not a list, or is an empty list\n};\n\ntemplate class L, class T1, class... T> struct mp_front_impl>\n{\n using type = T1;\n};\n\n} // namespace detail\n\ntemplate using mp_front = typename detail::mp_front_impl::type;\n\n// mp_pop_front\nnamespace detail\n{\n\ntemplate struct mp_pop_front_impl\n{\n// An error \"no type named 'type'\" here means that the argument to mp_pop_front\n// is either not a list, or is an empty list\n};\n\ntemplate class L, class T1, class... T> struct mp_pop_front_impl>\n{\n using type = L;\n};\n\n} // namespace detail\n\ntemplate using mp_pop_front = typename detail::mp_pop_front_impl::type;\n\n// mp_first\ntemplate using mp_first = mp_front;\n\n// mp_rest\ntemplate using mp_rest = mp_pop_front;\n\n// mp_remove_if\nnamespace detail\n{\n\ntemplate class P> struct mp_remove_if_impl;\n\ntemplate class L, class... T, template class P> struct mp_remove_if_impl, P>\n{\n template using _f = mp_if, mp_list<>, mp_list>;\n using type = mp_append, _f...>;\n};\n\n} // namespace detail\n\ntemplate class P> using mp_remove_if = typename detail::mp_remove_if_impl::type;\n\n} } }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/mp11.hpp\n//<<<<<<<<\n#include \n\nnamespace boost { namespace leaf {\n\n\ttemplate \n\tstruct failed\n\t{\n\t\tR value;\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct is_error_type_default>: std::false_type\n\t\t{\n\t\t};\n\t}\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate ::value, bool IsErrorCodeOrErrorCondition = std::is_error_code_enum::value | std::is_error_condition_enum::value>\n\t\tstruct match_traits;\n\n\t\ttemplate \n\t\tstruct match_traits\n\t\t{\n\t\t\tusing enumerator = T;\n\t\t\tusing e_type = enumerator;\n\t\t\tusing match_type = enumerator;\n\n\t\t\tstatic match_type const & get( e_type const & e ) noexcept\n\t\t\t{\n\t\t\t\treturn e;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct match_traits\n\t\t{\n\t\t\tusing enumerator = decltype(T::value);\n\t\t\tusing e_type = T;\n\t\t\tusing match_type = enumerator;\n\n\t\t\tstatic match_type const & get( e_type const & e ) noexcept\n\t\t\t{\n\t\t\t\treturn e.value;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct match_traits\n\t\t{\n\t\t\tusing enumerator = T;\n\t\t\tusing e_type = std::error_code;\n\t\t\tusing match_type = e_type;\n\n\t\t\tstatic match_type const & get( e_type const & e ) noexcept\n\t\t\t{\n\t\t\t\treturn e;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tbool check_value_pack( MatchType const & x, Enumerator v ) noexcept\n\t\t{\n\t\t\treturn x==v;\n\t\t}\n\n\t\ttemplate \n\t\tbool check_value_pack( MatchType const & x, Enumerator v1, EnumeratorRest ... v_rest ) noexcept\n\t\t{\n\t\t\treturn x==v1 || check_value_pack(x,v_rest...);\n\t\t}\n\n\t\ttemplate \n\t\tbool check_exception_pack( std::exception const * ex, Ex const * ) noexcept\n\t\t{\n\t\t\treturn dynamic_cast(ex)!=0;\n\t\t}\n\n\t\ttemplate \n\t\tbool check_exception_pack( std::exception const * ex, Ex const *, ExRest const * ... ex_rest ) noexcept\n\t\t{\n\t\t\treturn dynamic_cast(ex)!=0 || check_exception_pack(ex, ex_rest...);\n\t\t}\n\t}\n\n\ttemplate ::enumerator... V>\n\tstruct match\n\t{\n\t\tusing e_type = typename leaf_detail::match_traits::e_type;\n\t\tusing match_type = typename leaf_detail::match_traits::match_type;\n\t\tmatch_type const & value;\n\n\t\texplicit match( e_type const & e ):\n\t\t\tvalue(leaf_detail::match_traits::get(e))\n\t\t{\n\t\t}\n\n\t\tbool operator()() const noexcept\n\t\t{\n\t\t\treturn leaf_detail::check_value_pack(value,V...);\n\t\t}\n\t};\n\n\ttemplate \n\tstruct catch_\n\t{\n\t\tstd::exception const & value;\n\n\t\texplicit catch_( std::exception const & ex ):\n\t\t\tvalue(ex)\n\t\t{\n\t\t}\n\n\t\tbool operator()() const noexcept\n\t\t{\n\t\t\treturn leaf_detail::check_exception_pack(&value,static_cast(0)...);\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\tnamespace static_store_internal\n\t\t{\n\t\t\ttemplate \n\t\t\tstruct tuple_for_each\n\t\t\t{\n\t\t\t\tstatic void reset( Tuple & tup ) noexcept\n\t\t\t\t{\n\t\t\t\t\ttuple_for_each::reset(tup);\n\t\t\t\t\tstd::get(tup).reset();\n\t\t\t\t}\n\t\t\t};\n\n\t\t\ttemplate \n\t\t\tstruct tuple_for_each<0, Tuple>\n\t\t\t{\n\t\t\t\tstatic void reset( Tuple & ) noexcept { }\n\t\t\t};\n\n\t\t\t////////////////////////////////////////\n\n\t\t\tclass enable_any\n\t\t\t{\n\t\t\tprotected:\n\n\t\t\t\tenable_any() noexcept\n\t\t\t\t{\n\t\t\t\t\t++tl_unexpected_enabled_counter();\n\t\t\t\t}\n\n\t\t\t\t~enable_any() noexcept\n\t\t\t\t{\n\t\t\t\t\t--tl_unexpected_enabled_counter();\n\t\t\t\t}\n\t\t\t};\n\n\t\t\ttemplate \n\t\t\tclass static_store_slot:\n\t\t\t\tpublic slot\n\t\t\t{\n\t\t\tpublic:\n\t\t\t\toptional extract_optional( int err_id ) && noexcept\n\t\t\t\t{\n\t\t\t\t\tassert(err_id);\n\t\t\t\t\tslot const & s = *this;\n\t\t\t\t\tif( s.has_value() && s.value().err_id==err_id )\n\t\t\t\t\t\treturn optional(std::move(*this).value().e);\n\t\t\t\t\telse\n\t\t\t\t\t\treturn optional();\n\t\t\t\t}\n\t\t\t};\n\n\t\t\ttemplate <>\n\t\t\tclass static_store_slot:\n\t\t\t\tpublic slot,\n\t\t\t\tenable_any\n\t\t\t{\n\t\t\t};\n\n\t\t\ttemplate <>\n\t\t\tclass static_store_slot:\n\t\t\t\tpublic slot,\n\t\t\t\tenable_any\n\t\t\t{\n\t\t\t};\n\n\t\t\t////////////////////////////////////////\n\n\t\t\ttemplate \n\t\t\tstruct type_index;\n\n\t\t\ttemplate \n\t\t\tstruct type_index\n\t\t\t{\n\t\t\t\tstatic const int value = 0;\n\t\t\t};\n\n\t\t\ttemplate (a)...);\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & put( T const & v )\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(v);\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & put( T && v ) noexcept\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(std::move(v));\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT const * has_value() const noexcept\n\t\t\t{\n\t\t\t\treturn has_value_ ? &value_ : 0;\n\t\t\t}\n\n\t\t\tT * has_value() noexcept\n\t\t\t{\n\t\t\t\treturn has_value_ ? &value_ : 0;\n\t\t\t}\n\n\t\t\tT const & value() const & noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & value() & noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT const && value() const && noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT value() && noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\tT tmp(std::move(value_));\n\t\t\t\treset();\n\t\t\t\treturn tmp;\n\t\t\t}\n\t\t};\n\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/optional.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/detail/print.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/print.hpp\"\n#ifndef BOOST_LEAF_3BAB50A2B87E11E89EEB30600C39171A\n#define BOOST_LEAF_3BAB50A2B87E11E89EEB30600C39171A\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tinline char const * check_prefix( char const * t, char const (&prefix)[N] )\n\t\t{\n\t\t\treturn std::strncmp(t,prefix,sizeof(prefix)-1)==0 ? t+sizeof(prefix)-1 : t;\n\t\t}\n\t}\n\n\ttemplate \n\tchar const * type() noexcept\n\t{\n\tchar const * t =\n#ifdef __FUNCSIG__\n\t\t__FUNCSIG__;\n#else\n\t\t__PRETTY_FUNCTION__;\n#endif\n#if defined(__clang__)\n\t\tassert(leaf_detail::check_prefix(t,\"const char *boost::leaf::type() \")==t+32);\n\t\treturn t+32;\n#elif defined(__GNUC__)\n\t\tassert(leaf_detail::check_prefix(t,\"const char* boost::leaf::type() \")==t+32);\n\t\treturn t+32;\n#else\n\t\tchar const * clang_style = leaf_detail::check_prefix(t,\"const char *boost::leaf::type() \");\n\t\tif( clang_style!=t )\n\t\t\treturn clang_style;\n\t\tchar const * gcc_style = leaf_detail::check_prefix(t,\"const char* boost::leaf::type() \");\n\t\tif( gcc_style!=t )\n\t\t\treturn gcc_style;\n#endif\n\t\treturn t;\n\t}\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct is_printable: std::false_type\n\t\t{\n\t\t};\n\n\t\ttemplate \n\t\tstruct is_printable()<(), void())>: std::true_type\n\t\t{\n\t\t};\n\n\t\t////////////////////////////////////////\n\n\t\ttemplate \n\t\tstruct has_printable_member_value: std::false_type\n\t\t{\n\t\t};\n\n\t\ttemplate \n\t\tstruct has_printable_member_value()<().value, void())>: std::true_type\n\t\t{\n\t\t};\n\n\t\t////////////////////////////////////////\n\n\t\ttemplate ::value, bool ValuePrintable=has_printable_member_value::value>\n\t\tstruct diagnostic;\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & x )\n\t\t\t{\n\t\t\t\tos << x;\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & x )\n\t\t\t{\n\t\t\t\tos << type() << \": \" << x.value;\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & )\n\t\t\t{\n\t\t\t\tos << type() << \": N/A\";\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, std::exception_ptr const & )\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/print.hpp\n//<<<<<<<<\n#include \n#include \n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\tclass id_factory\n\t\t{\n\t\t\tid_factory( id_factory const & ) = delete;\n\t\t\tid_factory & operator=( id_factory const & ) = delete;\n\n\t\t\tstatic int new_err_id() noexcept\n\t\t\t{\n\t\t\t\tstatic std::atomic c;\n\t\t\t\tif( unsigned id = ++c )\n\t\t\t\t\treturn int(id);\n\t\t\t\telse\n\t\t\t\t\treturn int(++c);\n\t\t\t}\n\n\t\t\tint next_id_;\n\t\t\tint last_id_;\n\n\t\t\tid_factory() noexcept:\n\t\t\t\tnext_id_(new_err_id()),\n\t\t\t\tlast_id_(next_id_-1)\n\t\t\t{\n\t\t\t}\n\n\t\tpublic:\n\n\t\t\tstatic id_factory & tl_instance() noexcept\n\t\t\t{\n\t\t\t\tstatic thread_local id_factory s;\n\t\t\t\treturn s;\n\t\t\t}\n\n\t\t\tint last_id() noexcept\n\t\t\t{\n\t\t\t\treturn last_id_;\n\t\t\t}\n\n\t\t\tint new_id() noexcept\n\t\t\t{\n\t\t\t\tint id = last_id_ = next_id_;\n\t\t\t\tnext_id_ = new_err_id();\n\t\t\t\treturn id;\n\t\t\t}\n\n\t\t\tint next_id() noexcept\n\t\t\t{\n\t\t\t\treturn next_id_;\n\t\t\t}\n\t\t};\n\n\t\tinline int last_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().last_id();\n\t\t}\n\n\t\tinline int new_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().new_id();\n\t\t}\n\n\t\tinline int next_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().next_id();\n\t\t}\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\tclass slot_base\n\t\t{\n\t\t\tslot_base( slot_base const & ) = delete;\n\t\t\tslot_base & operator=( slot_base const & ) = delete;\n\n\t\t\tvirtual bool slot_print( std::ostream &, int err_id ) const = 0;\n\n\t\tpublic:\n\n\t\t\tstatic void print( std::ostream & os, int err_id )\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t\tfor( slot_base const * p = first(); p; p=p->next_ )\n\t\t\t\t\tif( p->slot_print(os,err_id) )\n\t\t\t\t\t\tos << std::endl;\n\t\t\t}\n\n\t\tprotected:\n\n\t\t\tstatic slot_base const * & first() noexcept\n\t\t\t{\n\t\t\t\tstatic thread_local slot_base const * p = 0;\n\t\t\t\treturn p;\n\t\t\t}\n\n\t\t\tslot_base const * const next_;\n\n\t\t\tslot_base() noexcept:\n\t\t\t\tnext_(first())\n\t\t\t{\n\t\t\t\tfirst() = this;\n\t\t\t}\n\n\t\t\t~slot_base() noexcept\n\t\t\t{\n\t\t\t\tslot_base const * & p = first();\n\t\t\t\tassert(p==this);\n\t\t\t\tp = next_;\n\t\t\t}\n\t\t};\n\t}\n\n\t////////////////////////////////////////\n\n\tclass error_id;\n\tnamespace leaf_detail { class captured_exception; }\n\n\tclass error_info\n\t{\n\t\terror_info( error_info const & ) = delete;\n\t\terror_info & operator=( error_info const & ) = delete;\n\n\t\tint const err_id_;\n\t\tstd::exception const * const ex_;\n\t\tleaf_detail::captured_exception const * const cap_;\n\t\tvoid (* const print_ex_)( std::ostream &, std::exception const *, leaf_detail::captured_exception const * );\n\n\tpublic:\n\n\t\texplicit error_info( int err_id ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(0),\n\t\t\tcap_(0),\n\t\t\tprint_ex_(0)\n\t\t{\n\t\t}\n\n\t\terror_info( int err_id, std::exception const * ex, void (*print_ex)(std::ostream &, std::exception const *, leaf_detail::captured_exception const *) ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(ex),\n\t\t\tcap_(0),\n\t\t\tprint_ex_(print_ex)\n\t\t{\n\t\t\tassert(print_ex_!=0);\n\t\t}\n\n\t\terror_info( int err_id, std::exception const * ex, leaf_detail::captured_exception const * cap, void (*print_ex)(std::ostream &, std::exception const *, leaf_detail::captured_exception const *) ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(ex),\n\t\t\tcap_(cap),\n\t\t\tprint_ex_(print_ex)\n\t\t{\n\t\t\tassert(print_ex_!=0);\n\t\t}\n\n\t\tint err_id() const noexcept\n\t\t{\n\t\t\treturn err_id_;\n\t\t}\n\n\t\tbool has_error() const noexcept\n\t\t{\n\t\t\treturn err_id_!=0;\n\t\t}\n\n\t\terror_id error() const noexcept;\n\n\t\tbool has_exception() const noexcept\n\t\t{\n\t\t\treturn print_ex_!=0;\n\t\t}\n\n\t\tstd::exception const * exception() const noexcept\n\t\t{\n\t\t\tassert(has_exception());\n\t\t\treturn ex_;\n\t\t}\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, error_info const & x )\n\t\t{\n\t\t\tos << \"LEAF Error ID: \" << x.err_id_ << std::endl;\n\t\t\tif( x.print_ex_ )\n\t\t\t\tx.print_ex_(os,x.ex_,x.cap_);\n\t\t\tleaf_detail::slot_base::print(os,x.err_id_);\n\t\t\treturn os;\n\t\t}\n\t};\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct has_data_member_value\n\t\t{\n\t\t\tstatic constexpr bool value=false;\n\t\t};\n\n\t\ttemplate \n\t\tstruct has_data_member_value().value, void())>\n\t\t{\n\t\t\tstatic constexpr bool value=std::is_member_object_pointer::value;\n\t\t};\n\n\t\ttemplate \n\t\tstruct is_error_type_default\n\t\t{\n\t\t\tstatic constexpr bool value = has_data_member_value::value || std::is_base_of::value;\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\t}\n\n\ttemplate \n\tstruct is_error_type: leaf_detail::is_error_type_default\n\t{\n\t};\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\tclass monitor_base\n\t\t{\n\t\t\tmonitor_base( monitor_base const & ) = delete;\n\t\t\tmonitor_base & operator=( monitor_base const & ) = delete;\n\n\t\t\tmutable error_info const * ei_;\n\n\t\tprotected:\n\n\t\t\tmonitor_base() noexcept:\n\t\t\t\tei_(0)\n\t\t\t{\n\t\t\t}\n\n\t\t\tmonitor_base( monitor_base && x ) noexcept:\n\t\t\t\tei_(0)\n\t\t\t{\n\t\t\t\tx.ei_ = 0;\n\t\t\t}\n\n\t\t\tvoid set_error_info( error_info const & ei ) const noexcept\n\t\t\t{\n\t\t\t\tei_ = &ei;\n\t\t\t}\n\n\t\t\terror_info const & get_error_info() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn *ei_;\n\t\t\t}\n\n\t\tpublic:\n\n\t\t\tbool has_error() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->has_error();\n\t\t\t}\n\n\t\t\terror_id error() const noexcept;\n\n\t\t\tbool has_exception() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->has_exception();\n\t\t\t}\n\n\t\t\tstd::exception const * exception() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->exception();\n\t\t\t}\n\t\t};\n\t}\n\n\tclass diagnostic_info: leaf_detail::monitor_base\n\t{\n\tpublic:\n\n\t\tchar const * (*first_type)();\n\t\tint count;\n\n\t\texplicit diagnostic_info( char const * (*first_type)() ) noexcept:\n\t\t\tfirst_type(first_type),\n\t\t\tcount(1)\n\t\t{\n\t\t}\n\n\t\tusing monitor_base::set_error_info;\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, diagnostic_info const & x )\n\t\t{\n\t\t\tassert(x.first_type!=0);\n\t\t\tassert(x.count>0);\n\t\t\tos << x.get_error_info() << \"diagnostic_info: Detected \";\n\t\t\tif( x.count==1 )\n\t\t\t\tos << \"1 attempt to communicate an E-object\";\n\t\t\telse\n\t\t\t\tos << x.count << \" attempts to communicate unexpected E-objects, the first one\";\n\t\t\treturn os << \" of type \" << x.first_type() << std::endl;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, diagnostic_info const & ) noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t}\n\n\tclass verbose_diagnostic_info: leaf_detail::monitor_base\n\t{\n\t\tstd::string s_;\n\t\tstd::set already_;\n\n\tpublic:\n\n\t\tverbose_diagnostic_info() noexcept\n\t\t{\n\t\t}\n\n\t\tusing monitor_base::set_error_info;\n\n\t\tvoid reset() noexcept\n\t\t{\n\t\t\ts_.clear();\n\t\t\talready_.clear();\n\t\t}\n\n\t\ttemplate \n\t\tvoid add( E const & e )\n\t\t{\n\t\t\tstd::stringstream s;\n\t\t\tif( leaf_detail::diagnostic::print(s,e) && already_.insert(&type).second )\n\t\t\t{\n\t\t\t\ts << std::endl;\n\t\t\t\ts_ += s.str();\n\t\t\t}\n\t\t}\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, verbose_diagnostic_info const & x )\n\t\t{\n\t\t\tos <<\n\t\t\t\tx.get_error_info() <<\n\t\t\t\t\"verbose_diagnostic_info:\" << std::endl <<\n\t\t\t\tx.s_;\n\t\t\treturn os;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, verbose_diagnostic_info const & ) noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct id_e_pair\n\t\t{\n\t\t\tint err_id;\n\t\t\tE e;\n\n\t\t\texplicit id_e_pair( int err_id ) noexcept:\n\t\t\t\terr_id(err_id)\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\n\t\t\tid_e_pair( int err_id, E const & e ):\n\t\t\t\terr_id(err_id),\n\t\t\t\te(e)\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\n\t\t\tid_e_pair( int err_id, E && e ) noexcept:\n\t\t\t\terr_id(err_id),\n\t\t\t\te(std::forward(e))\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\t\t};\n\n\t\tinline int & tl_unexpected_enabled_counter() noexcept\n\t\t{\n\t\t\tstatic thread_local int c;\n\t\t\treturn c;\n\t\t}\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tclass slot:\n\t\t\tslot_base,\n\t\t\toptional>\n\t\t{\n\t\t\tslot( slot const & ) = delete;\n\t\t\tslot & operator=( slot const & ) = delete;\n\t\t\ttypedef optional> base;\n\t\t\tslot * prev_;\n\t\t\tstatic_assert(is_error_type::value,\"Not an error type\");\n\n\t\t\tbool slot_print( std::ostream &, int err_id ) const;\n\n\t\tprotected:\n\n\t\t\tslot() noexcept;\n\t\t\t~slot() noexcept;\n\n\t\tpublic:\n\n\t\t\tusing base::put;\n\t\t\tusing base::has_value;\n\t\t\tusing base::value;\n\t\t\tusing base::reset;\n\t\t\tusing base::emplace;\n\t\t};\n\n\t\ttemplate \n\t\tslot * & tl_slot_ptr() noexcept\n\t\t{\n\t\t\tstatic thread_local slot * s;\n\t\t\treturn s;\n\t\t}\n\n\t\ttemplate \n\t\tvoid put_unexpected( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tif( slot * p = tl_slot_ptr() )\n\t\t\t{\n\t\t\t\tif( p->has_value() )\n\t\t\t\t{\n\t\t\t\t\tauto & p_id_e = p->value();\n\t\t\t\t\tif( p_id_e.err_id==id_e.err_id )\n\t\t\t\t\t{\n\t\t\t\t\t\t++p_id_e.e.count;\n\t\t\t\t\t\treturn;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\t(void) p->put( id_e_pair(id_e.err_id,diagnostic_info(&type)) );\n\t\t\t}\n\t\t}\n\n\t\ttemplate \n\t\tvoid put_verbose_diagnostic_info( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tif( slot * sl = tl_slot_ptr() )\n\t\t\t{\n\t\t\t\tif( auto * pv = sl->has_value() )\n\t\t\t\t{\n\t\t\t\t\tif( pv->err_id!=id_e.err_id )\n\t\t\t\t\t{\n\t\t\t\t\t\tpv->err_id = id_e.err_id;\n\t\t\t\t\t\tpv->e.reset();\n\t\t\t\t\t}\n\t\t\t\t\tpv->e.add(id_e.e);\n\t\t\t\t}\n\t\t\t\telse\n\t\t\t\t\tsl->emplace(id_e.err_id).e.add(id_e.e);\n\t\t\t}\n\t\t}\n\n\t\ttemplate \n\t\tvoid no_expect_slot( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tput_unexpected(id_e);\n\t\t\tput_verbose_diagnostic_info(id_e);\n\t\t}\n\n\t\ttemplate \n\t\tint put_slot( int err_id, E && e ) noexcept\n\t\t{\n\t\t\tusing T = typename std::remove_cv::type>::type;\n\t\t\tassert(err_id);\n\t\t\tif( slot * p = tl_slot_ptr() )\n\t\t\t\t(void) p->put( id_e_pair(err_id,std::forward(e)) );\n\t\t\telse\n\t\t\t{\n\t\t\t\tint c = tl_unexpected_enabled_counter();\n\t\t\t\tassert(c>=0);\n\t\t\t\tif( c )\n\t\t\t\t\tno_expect_slot( id_e_pair(err_id,std::forward(e)) );\n\t\t\t}\n\t\t\treturn 0;\n\t\t}\n\n\t\ttemplate \n\t\tslot::slot() noexcept\n\t\t{\n\t\t\tslot * & p = tl_slot_ptr();\n\t\t\tprev_ = p;\n\t\t\tp = this;\n\t\t}\n\n\t\ttemplate \n\t\tslot::~slot() noexcept\n\t\t{\n\t\t\tif( prev_ )\n\t\t\t{\n\t\t\t\toptional> & p = *prev_;\n\t\t\t\tp = std::move(*this);\n\t\t\t}\n\t\t\telse\n\t\t\t{\n\t\t\t\tint c = tl_unexpected_enabled_counter();\n\t\t\t\tassert(c>=0);\n\t\t\t\tif( c && has_value() )\n\t\t\t\t\tno_expect_slot(value());\n\t\t\t}\n\t\t\ttl_slot_ptr() = prev_;\n\t\t}\n\n\t\ttemplate \n\t\tbool slot::slot_print( std::ostream & os, int err_id ) const\n\t\t{\n\t\t\tassert(err_id);\n\t\t\tif( tl_slot_ptr()==this )\n\t\t\t\tif( id_e_pair const * id_e = has_value() )\n\t\t\t\t\tif( id_e->err_id==err_id )\n\t\t\t\t\t\treturn diagnostice)>::print(os,id_e->e);\n\t\t\treturn false;\n\t\t}\n\n\t\tenum class result_variant\n\t\t{\n\t\t\tvalue,\n\t\t\terr_id,\n\t\t\tcap\n\t\t};\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/teleport.hpp\n//<<<<<<<<\n#include \n\n#define LEAF_ERROR(...) ::boost::leaf::leaf_detail::new_error_at(__FILE__,__LINE__,__FUNCTION__,__VA_ARGS__)\n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\tclass error_category: public std::error_category\n\t\t{\n\t\t\tbool equivalent( int, std::error_condition const & ) const noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\tbool equivalent( std::error_code const &, int ) const noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\tchar const * name() const noexcept\n\t\t\t{\n\t\t\t\treturn \"LEAF error, use with leaf::handle_some or leaf::handle_all.\";\n\t\t\t}\n\n\t\t\tstd::string message( int condition ) const\n\t\t\t{\n\t\t\t\treturn name();\n\t\t\t}\n\t\t};\n\n\t\tinline error_category const & get_error_category() noexcept\n\t\t{\n\t\t\tstatic error_category cat;\n\t\t\treturn cat;\n\t\t}\n\t}\n\n\tinline bool is_error_id( std::error_code const & ec )\n\t{\n\t\treturn &ec.category() == &leaf_detail::get_error_category();\n\t}\n\n\t////////////////////////////////////////\n\n\tstruct e_original_ec { std::error_code value; };\n\n\tclass error_id: public std::error_code\n\t{\n\t\ttemplate \n\t\tstatic std::error_code import( ErrorCode && ec ) noexcept\n\t\t{\n\t\t\tstd::error_category const & cat = leaf_detail::get_error_category();\n\t\t\tif( ec && &ec.category()!=&cat )\n\t\t\t{\n\t\t\t\tint err_id = leaf_detail::new_id();\n\t\t\t\tleaf_detail::put_slot(err_id, e_original_ec{ec});\n\t\t\t\treturn std::error_code(err_id, cat);\n\t\t\t}\n\t\t\telse\n\t\t\t\treturn ec;\n\t\t}\n\n\tpublic:\n\n\t\terror_id() noexcept = default;\n\n\t\ttemplate \n\t\terror_id( std::error_code const & ec, E && ... e ) noexcept:\n\t\t\terror_code(import(ec))\n\t\t{\n\t\t\t(void) propagate(std::forward(e)...);\n\t\t}\n\n\t\ttemplate \n\t\terror_id( std::error_code && ec, E && ... e ) noexcept:\n\t\t\terror_code(import(std::move(ec)))\n\t\t{\n\t\t\t(void) propagate(std::forward(e)...);\n\t\t}\n\n\t\terror_id propagate() const noexcept\n\t\t{\n\t\t\tassert(is_error_id(*this));\n\t\t\treturn *this;\n\t\t}\n\n\t\ttemplate \n\t\terror_id propagate( E && ... e ) const noexcept\n\t\t{\n\t\t\tassert(is_error_id(*this));\n\t\t\tauto _ = { leaf_detail::put_slot(value(), std::forward(e))... };\n\t\t\t(void) _;\n\t\t\treturn *this;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\tinline error_id make_error( int err_id )\n\t\t{\n\t\t\tassert(err_id);\n\t\t\treturn error_id(std::error_code(err_id, get_error_category()));\n\t\t}\n\t}\n\n\ttemplate \n\terror_id new_error( E && ... e ) noexcept\n\t{\n\t\treturn leaf_detail::make_error(leaf_detail::new_id()).propagate(std::forward(e)...);\n\t}\n\n\tinline error_id next_error() noexcept\n\t{\n\t\treturn leaf_detail::make_error(leaf_detail::next_id());\n\t}\n\n\tinline error_id error_info::error() const noexcept\n\t{\n\t\tassert(has_error());\n\t\treturn leaf_detail::make_error(err_id_);\n\t}\n\n\tinline error_id leaf_detail::monitor_base::error() const noexcept\n\t{\n\t\tassert(ei_!=0);\n\t\treturn ei_->error();\n\t}\n\n\t////////////////////////////////////////\n\n\tstruct e_source_location\n\t{\n\t\tchar const * const file;\n\t\tint const line;\n\t\tchar const * const function;\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, e_source_location const & x )\n\t\t{\n\t\t\treturn os << leaf::type() << \": \" << x.file << '(' << x.line << \") in function \" << x.function;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <> struct is_error_type_default: std::true_type { };\n\n\t\ttemplate \n\t\terror_id new_error_at( char const * file, int line, char const * function, E && ... e ) noexcept\n\t\t{\n\t\t\tassert(file&&*file);\n\t\t\tassert(line>0);\n\t\t\tassert(function&&*function);\n\t\t\te_source_location sl { file, line, function }; // Temp object MSVC workaround\n\t\t\treturn new_error( std::move(sl), std::forward(e)... );\n\t\t}\n\t}\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/error.hpp\n//<<<<<<<<\n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\tclass captured_exception_impl:\n\t\t\tpublic captured_exception,\n\t\t\tpublic error_id\n\t\t{\n\t\t\tstd::exception_ptr ex_;\n\t\t\tstd::shared_ptr ds_;\n\t\t\tbool had_error_;\n\t\t\tvoid (*print_captured_types_)(std::ostream &);\n\n\t\tpublic:\n\n\t\t\tcaptured_exception_impl( std::exception_ptr && ex, std::shared_ptr && ds, bool had_error, void (*print_captured_types)(std::ostream &) ) noexcept:\n\t\t\t\terror_id(leaf_detail::make_error(ds->err_id())),\n\t\t\t\tex_(std::move(ex)),\n\t\t\t\tds_(std::move(ds)),\n\t\t\t\thad_error_(had_error),\n\t\t\t\tprint_captured_types_(print_captured_types)\n\t\t\t{\n\t\t\t\tassert(ex_);\n\t\t\t\tassert(print_captured_types_!=0);\n\t\t\t}\n\n\t\t\t[[noreturn]] void unload_and_rethrow_original_exception()\n\t\t\t{\n\t\t\t\tstd::shared_ptr ds; ds.swap(ds_);\n\t\t\t\tassert(ds);\n\t\t\t\tif( had_error_ )\n\t\t\t\t{\n\t\t\t\t\tint err_id = ds->unload();\n\t\t\t\t\tassert(err_id==value());\n\t\t\t\t\t(void) err_id;\n\t\t\t\t}\n\t\t\t\telse\n\t\t\t\t\tds->unload(leaf_detail::next_id());\n\t\t\t\tstd::rethrow_exception(ex_);\n\t\t\t}\n\n\t\t\tvoid print( std::ostream & os ) const\n\t\t\t{\n\t\t\t\tprint_captured_types_(os);\n\t\t\t}\n\t\t};\n\n\t\t////////////////////////////////////////\n\n\t\ttemplate \n\t\tstruct print_types;\n\n\t\ttemplate \n\t\tstruct print_types\n\t\t{\n\t\t\tstatic void print( std::ostream & os )\n\t\t\t{\n\t\t\t\tos << '\\t' << type() << std::endl;\n\t\t\t\tprint_types::print(os);\n\t\t\t}\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct print_types<>\n\t\t{\n\t\t\tstatic void print( std::ostream & )\n\t\t\t{\n\t\t\t}\n\t\t};\n\n\t\t////////////////////////////////////////\n\n\t\ttemplate \n\t\tstruct exception_trap;\n\n\t\ttemplate class L, class... A, class... E>\n\t\tstruct exception_trap,E...>\n\t\t{\n\t\t\tF f_;\n\n\t\t\texplicit exception_trap( F && f ) noexcept:\n\t\t\t\tf_(std::forward(f))\n\t\t\t{\n\t\t\t}\n\n\t\t\tdecltype(std::declval()(std::declval ()...)) operator()( A... a ) const\n\t\t\t{\n\t\t\t\tstatic_store ss;\n\t\t\t\tss.set_reset(true);\n\t\t\t\ttry\n\t\t\t\t{\n\t\t\t\t\treturn f_(std::forward (a)...);\n\t\t\t\t}\n\t\t\t\tcatch( captured_exception const & )\n\t\t\t\t{\n\t\t\t\t\tthrow;\n\t\t\t\t}\n\t\t\t\tcatch( error_id const & err )\n\t\t\t\t{\n\t\t\t\t\tthrow_exception(captured_exception_impl( std::current_exception(), std::make_shared>(err.value(),std::move(ss)), true, &print_types::print ));\n\t\t\t\t}\n\t\t\t\tcatch(...)\n\t\t\t\t{\n\t\t\t\t\tthrow_exception(captured_exception_impl( std::current_exception(), std::make_shared>(leaf_detail::new_id(),std::move(ss)), false, &print_types::print ));\n\t\t\t\t}\n\t\t\t}\n\t\t};\n\n\t} // leaf_detail\n\n\ttemplate \n\tleaf_detail::exception_trap::mp_args,E...> capture_exception( F && f ) noexcept\n\t{\n\t\tusing namespace leaf_detail;\n\t\treturn exception_trap::mp_args,E...>(std::move(f));\n\t}\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/capture_exception.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/capture_result.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/capture_result.hpp\"\n#ifndef BOOST_LEAF_2416C558123711E9B9D9691F8C7F4AFC\n#define BOOST_LEAF_2416C558123711E9B9D9691F8C7F4AFC\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/result.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/result.hpp\"\n#ifndef BOOST_LEAF_2CD8E6B8CA8D11E8BD3B80D66CE5B91B\n#define BOOST_LEAF_2CD8E6B8CA8D11E8BD3B80D66CE5B91B\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/detail/dynamic_store.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/dynamic_store.hpp\"\n#ifndef BOOST_LEAF_6CCC5F56124B11E9B6C4CB8C8C7F4AFC\n#define BOOST_LEAF_6CCC5F56124B11E9B6C4CB8C8C7F4AFC\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\tclass dynamic_store\n\t\t{\n\t\tprotected:\n\n\t\t\tdynamic_store() noexcept\n\t\t\t{\n\t\t\t}\n\n\t\t\t~dynamic_store() noexcept\n\t\t\t{\n\t\t\t}\n\n\t\tpublic:\n\n\t\t\tvirtual int err_id() const noexcept = 0;\n\t\t\tvirtual int unload() noexcept = 0;\n\t\t\tvirtual int unload( int error_code ) noexcept = 0;\n\t\t};\n\t}\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/dynamic_store.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/throw.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/throw.hpp\"\n#ifndef BOOST_LEAF_75F38740D98D11E881DDB244C82C3C47\n#define BOOST_LEAF_75F38740D98D11E881DDB244C82C3C47\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/error.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/error.hpp\"\n#ifndef BOOST_LEAF_BA049396D0D411E8B45DF7D4A759E189\n#define BOOST_LEAF_BA049396D0D411E8B45DF7D4A759E189\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/detail/teleport.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/teleport.hpp\"\n#ifndef BOOST_LEAF_B449A5821DA411E99B9A012588D1CC0E\n#define BOOST_LEAF_B449A5821DA411E99B9A012588D1CC0E\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/detail/optional.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/optional.hpp\"\n#ifndef BOOST_LEAF_47258FCCB6B411E8A1F35AA00C39171A\n#define BOOST_LEAF_47258FCCB6B411E8A1F35AA00C39171A\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tclass optional\n\t\t{\n\t\t\tunion { T value_; };\n\t\t\tbool has_value_;\n\n\t\tpublic:\n\n\t\t\ttypedef T value_type;\n\t\t\toptional() noexcept:\n\t\t\t\thas_value_(false)\n\t\t\t{\n\t\t\t}\n\n\t\t\toptional( optional const & x ):\n\t\t\t\thas_value_(x.has_value_)\n\t\t\t{\n\t\t\t\tif( x.has_value_ )\n\t\t\t\t\t(void) new (&value_) T( x.value_ );\n\t\t\t}\n\n\t\t\toptional( optional && x ) noexcept:\n\t\t\t\thas_value_(x.has_value_)\n\t\t\t{\n\t\t\t\tif( x.has_value_ )\n\t\t\t\t{\n\t\t\t\t\t(void) new (&value_) T( std::move(x.value_) );\n\t\t\t\t\tx.value_.~T();\n\t\t\t\t\tx.has_value_ = false;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\toptional( T const & v ):\n\t\t\t\tvalue_(v),\n\t\t\t\thas_value_(true)\n\t\t\t{\n\t\t\t}\n\n\t\t\toptional( T && v ) noexcept:\n\t\t\t\tvalue_(std::move(v)),\n\t\t\t\thas_value_(true)\n\t\t\t{\n\t\t\t}\n\n\t\t\toptional & operator=( optional const & x )\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\tif( x.has_value() )\n\t\t\t\t\tput(x.value());\n\t\t\t\treturn *this;\n\t\t\t}\n\n\t\t\toptional & operator=( optional && x ) noexcept\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\tif( x.has_value() )\n\t\t\t\t\tput(std::move(x).value());\n\t\t\t\treturn *this;\n\t\t\t}\n\n\t\t\t~optional() noexcept\n\t\t\t{\n\t\t\t\treset();\n\t\t\t}\n\n\t\t\tvoid reset() noexcept\n\t\t\t{\n\t\t\t\tif( has_value() )\n\t\t\t\t{\n\t\t\t\t\tvalue_.~T();\n\t\t\t\t\thas_value_=false;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\ttemplate \n\t\t\tT & emplace( A && ... a )\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(std::forward (a)...);\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & put( T const & v )\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(v);\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & put( T && v ) noexcept\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(std::move(v));\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT const * has_value() const noexcept\n\t\t\t{\n\t\t\t\treturn has_value_ ? &value_ : 0;\n\t\t\t}\n\n\t\t\tT * has_value() noexcept\n\t\t\t{\n\t\t\t\treturn has_value_ ? &value_ : 0;\n\t\t\t}\n\n\t\t\tT const & value() const & noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & value() & noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT const && value() const && noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT value() && noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\tT tmp(std::move(value_));\n\t\t\t\treset();\n\t\t\t\treturn tmp;\n\t\t\t}\n\t\t};\n\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/optional.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/detail/print.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/print.hpp\"\n#ifndef BOOST_LEAF_3BAB50A2B87E11E89EEB30600C39171A\n#define BOOST_LEAF_3BAB50A2B87E11E89EEB30600C39171A\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tinline char const * check_prefix( char const * t, char const (&prefix)[N] )\n\t\t{\n\t\t\treturn std::strncmp(t,prefix,sizeof(prefix)-1)==0 ? t+sizeof(prefix)-1 : t;\n\t\t}\n\t}\n\n\ttemplate \n\tchar const * type() noexcept\n\t{\n\tchar const * t =\n#ifdef __FUNCSIG__\n\t\t__FUNCSIG__;\n#else\n\t\t__PRETTY_FUNCTION__;\n#endif\n#if defined(__clang__)\n\t\tassert(leaf_detail::check_prefix(t,\"const char *boost::leaf::type() \")==t+32);\n\t\treturn t+32;\n#elif defined(__GNUC__)\n\t\tassert(leaf_detail::check_prefix(t,\"const char* boost::leaf::type() \")==t+32);\n\t\treturn t+32;\n#else\n\t\tchar const * clang_style = leaf_detail::check_prefix(t,\"const char *boost::leaf::type() \");\n\t\tif( clang_style!=t )\n\t\t\treturn clang_style;\n\t\tchar const * gcc_style = leaf_detail::check_prefix(t,\"const char* boost::leaf::type() \");\n\t\tif( gcc_style!=t )\n\t\t\treturn gcc_style;\n#endif\n\t\treturn t;\n\t}\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct is_printable: std::false_type\n\t\t{\n\t\t};\n\n\t\ttemplate \n\t\tstruct is_printable()<(), void())>: std::true_type\n\t\t{\n\t\t};\n\n\t\t////////////////////////////////////////\n\n\t\ttemplate \n\t\tstruct has_printable_member_value: std::false_type\n\t\t{\n\t\t};\n\n\t\ttemplate \n\t\tstruct has_printable_member_value()<().value, void())>: std::true_type\n\t\t{\n\t\t};\n\n\t\t////////////////////////////////////////\n\n\t\ttemplate ::value, bool ValuePrintable=has_printable_member_value::value>\n\t\tstruct diagnostic;\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & x )\n\t\t\t{\n\t\t\t\tos << x;\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & x )\n\t\t\t{\n\t\t\t\tos << type() << \": \" << x.value;\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & )\n\t\t\t{\n\t\t\t\tos << type() << \": N/A\";\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, std::exception_ptr const & )\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/print.hpp\n//<<<<<<<<\n#include \n#include \n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\tclass id_factory\n\t\t{\n\t\t\tid_factory( id_factory const & ) = delete;\n\t\t\tid_factory & operator=( id_factory const & ) = delete;\n\n\t\t\tstatic int new_err_id() noexcept\n\t\t\t{\n\t\t\t\tstatic std::atomic c;\n\t\t\t\tif( unsigned id = ++c )\n\t\t\t\t\treturn int(id);\n\t\t\t\telse\n\t\t\t\t\treturn int(++c);\n\t\t\t}\n\n\t\t\tint next_id_;\n\t\t\tint last_id_;\n\n\t\t\tid_factory() noexcept:\n\t\t\t\tnext_id_(new_err_id()),\n\t\t\t\tlast_id_(next_id_-1)\n\t\t\t{\n\t\t\t}\n\n\t\tpublic:\n\n\t\t\tstatic id_factory & tl_instance() noexcept\n\t\t\t{\n\t\t\t\tstatic thread_local id_factory s;\n\t\t\t\treturn s;\n\t\t\t}\n\n\t\t\tint last_id() noexcept\n\t\t\t{\n\t\t\t\treturn last_id_;\n\t\t\t}\n\n\t\t\tint new_id() noexcept\n\t\t\t{\n\t\t\t\tint id = last_id_ = next_id_;\n\t\t\t\tnext_id_ = new_err_id();\n\t\t\t\treturn id;\n\t\t\t}\n\n\t\t\tint next_id() noexcept\n\t\t\t{\n\t\t\t\treturn next_id_;\n\t\t\t}\n\t\t};\n\n\t\tinline int last_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().last_id();\n\t\t}\n\n\t\tinline int new_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().new_id();\n\t\t}\n\n\t\tinline int next_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().next_id();\n\t\t}\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\tclass slot_base\n\t\t{\n\t\t\tslot_base( slot_base const & ) = delete;\n\t\t\tslot_base & operator=( slot_base const & ) = delete;\n\n\t\t\tvirtual bool slot_print( std::ostream &, int err_id ) const = 0;\n\n\t\tpublic:\n\n\t\t\tstatic void print( std::ostream & os, int err_id )\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t\tfor( slot_base const * p = first(); p; p=p->next_ )\n\t\t\t\t\tif( p->slot_print(os,err_id) )\n\t\t\t\t\t\tos << std::endl;\n\t\t\t}\n\n\t\tprotected:\n\n\t\t\tstatic slot_base const * & first() noexcept\n\t\t\t{\n\t\t\t\tstatic thread_local slot_base const * p = 0;\n\t\t\t\treturn p;\n\t\t\t}\n\n\t\t\tslot_base const * const next_;\n\n\t\t\tslot_base() noexcept:\n\t\t\t\tnext_(first())\n\t\t\t{\n\t\t\t\tfirst() = this;\n\t\t\t}\n\n\t\t\t~slot_base() noexcept\n\t\t\t{\n\t\t\t\tslot_base const * & p = first();\n\t\t\t\tassert(p==this);\n\t\t\t\tp = next_;\n\t\t\t}\n\t\t};\n\t}\n\n\t////////////////////////////////////////\n\n\tclass error_id;\n\tnamespace leaf_detail { class captured_exception; }\n\n\tclass error_info\n\t{\n\t\terror_info( error_info const & ) = delete;\n\t\terror_info & operator=( error_info const & ) = delete;\n\n\t\tint const err_id_;\n\t\tstd::exception const * const ex_;\n\t\tleaf_detail::captured_exception const * const cap_;\n\t\tvoid (* const print_ex_)( std::ostream &, std::exception const *, leaf_detail::captured_exception const * );\n\n\tpublic:\n\n\t\texplicit error_info( int err_id ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(0),\n\t\t\tcap_(0),\n\t\t\tprint_ex_(0)\n\t\t{\n\t\t}\n\n\t\terror_info( int err_id, std::exception const * ex, void (*print_ex)(std::ostream &, std::exception const *, leaf_detail::captured_exception const *) ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(ex),\n\t\t\tcap_(0),\n\t\t\tprint_ex_(print_ex)\n\t\t{\n\t\t\tassert(print_ex_!=0);\n\t\t}\n\n\t\terror_info( int err_id, std::exception const * ex, leaf_detail::captured_exception const * cap, void (*print_ex)(std::ostream &, std::exception const *, leaf_detail::captured_exception const *) ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(ex),\n\t\t\tcap_(cap),\n\t\t\tprint_ex_(print_ex)\n\t\t{\n\t\t\tassert(print_ex_!=0);\n\t\t}\n\n\t\tint err_id() const noexcept\n\t\t{\n\t\t\treturn err_id_;\n\t\t}\n\n\t\tbool has_error() const noexcept\n\t\t{\n\t\t\treturn err_id_!=0;\n\t\t}\n\n\t\terror_id error() const noexcept;\n\n\t\tbool has_exception() const noexcept\n\t\t{\n\t\t\treturn print_ex_!=0;\n\t\t}\n\n\t\tstd::exception const * exception() const noexcept\n\t\t{\n\t\t\tassert(has_exception());\n\t\t\treturn ex_;\n\t\t}\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, error_info const & x )\n\t\t{\n\t\t\tos << \"LEAF Error ID: \" << x.err_id_ << std::endl;\n\t\t\tif( x.print_ex_ )\n\t\t\t\tx.print_ex_(os,x.ex_,x.cap_);\n\t\t\tleaf_detail::slot_base::print(os,x.err_id_);\n\t\t\treturn os;\n\t\t}\n\t};\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct has_data_member_value\n\t\t{\n\t\t\tstatic constexpr bool value=false;\n\t\t};\n\n\t\ttemplate \n\t\tstruct has_data_member_value().value, void())>\n\t\t{\n\t\t\tstatic constexpr bool value=std::is_member_object_pointer::value;\n\t\t};\n\n\t\ttemplate \n\t\tstruct is_error_type_default\n\t\t{\n\t\t\tstatic constexpr bool value = has_data_member_value::value || std::is_base_of::value;\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\t}\n\n\ttemplate \n\tstruct is_error_type: leaf_detail::is_error_type_default\n\t{\n\t};\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\tclass monitor_base\n\t\t{\n\t\t\tmonitor_base( monitor_base const & ) = delete;\n\t\t\tmonitor_base & operator=( monitor_base const & ) = delete;\n\n\t\t\tmutable error_info const * ei_;\n\n\t\tprotected:\n\n\t\t\tmonitor_base() noexcept:\n\t\t\t\tei_(0)\n\t\t\t{\n\t\t\t}\n\n\t\t\tmonitor_base( monitor_base && x ) noexcept:\n\t\t\t\tei_(0)\n\t\t\t{\n\t\t\t\tx.ei_ = 0;\n\t\t\t}\n\n\t\t\tvoid set_error_info( error_info const & ei ) const noexcept\n\t\t\t{\n\t\t\t\tei_ = &ei;\n\t\t\t}\n\n\t\t\terror_info const & get_error_info() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn *ei_;\n\t\t\t}\n\n\t\tpublic:\n\n\t\t\tbool has_error() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->has_error();\n\t\t\t}\n\n\t\t\terror_id error() const noexcept;\n\n\t\t\tbool has_exception() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->has_exception();\n\t\t\t}\n\n\t\t\tstd::exception const * exception() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->exception();\n\t\t\t}\n\t\t};\n\t}\n\n\tclass diagnostic_info: leaf_detail::monitor_base\n\t{\n\tpublic:\n\n\t\tchar const * (*first_type)();\n\t\tint count;\n\n\t\texplicit diagnostic_info( char const * (*first_type)() ) noexcept:\n\t\t\tfirst_type(first_type),\n\t\t\tcount(1)\n\t\t{\n\t\t}\n\n\t\tusing monitor_base::set_error_info;\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, diagnostic_info const & x )\n\t\t{\n\t\t\tassert(x.first_type!=0);\n\t\t\tassert(x.count>0);\n\t\t\tos << x.get_error_info() << \"diagnostic_info: Detected \";\n\t\t\tif( x.count==1 )\n\t\t\t\tos << \"1 attempt to communicate an E-object\";\n\t\t\telse\n\t\t\t\tos << x.count << \" attempts to communicate unexpected E-objects, the first one\";\n\t\t\treturn os << \" of type \" << x.first_type() << std::endl;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, diagnostic_info const & ) noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t}\n\n\tclass verbose_diagnostic_info: leaf_detail::monitor_base\n\t{\n\t\tstd::string s_;\n\t\tstd::set already_;\n\n\tpublic:\n\n\t\tverbose_diagnostic_info() noexcept\n\t\t{\n\t\t}\n\n\t\tusing monitor_base::set_error_info;\n\n\t\tvoid reset() noexcept\n\t\t{\n\t\t\ts_.clear();\n\t\t\talready_.clear();\n\t\t}\n\n\t\ttemplate \n\t\tvoid add( E const & e )\n\t\t{\n\t\t\tstd::stringstream s;\n\t\t\tif( leaf_detail::diagnostic::print(s,e) && already_.insert(&type).second )\n\t\t\t{\n\t\t\t\ts << std::endl;\n\t\t\t\ts_ += s.str();\n\t\t\t}\n\t\t}\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, verbose_diagnostic_info const & x )\n\t\t{\n\t\t\tos <<\n\t\t\t\tx.get_error_info() <<\n\t\t\t\t\"verbose_diagnostic_info:\" << std::endl <<\n\t\t\t\tx.s_;\n\t\t\treturn os;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, verbose_diagnostic_info const & ) noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct id_e_pair\n\t\t{\n\t\t\tint err_id;\n\t\t\tE e;\n\n\t\t\texplicit id_e_pair( int err_id ) noexcept:\n\t\t\t\terr_id(err_id)\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\n\t\t\tid_e_pair( int err_id, E const & e ):\n\t\t\t\terr_id(err_id),\n\t\t\t\te(e)\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\n\t\t\tid_e_pair( int err_id, E && e ) noexcept:\n\t\t\t\terr_id(err_id),\n\t\t\t\te(std::forward(e))\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\t\t};\n\n\t\tinline int & tl_unexpected_enabled_counter() noexcept\n\t\t{\n\t\t\tstatic thread_local int c;\n\t\t\treturn c;\n\t\t}\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tclass slot:\n\t\t\tslot_base,\n\t\t\toptional>\n\t\t{\n\t\t\tslot( slot const & ) = delete;\n\t\t\tslot & operator=( slot const & ) = delete;\n\t\t\ttypedef optional> base;\n\t\t\tslot * prev_;\n\t\t\tstatic_assert(is_error_type::value,\"Not an error type\");\n\n\t\t\tbool slot_print( std::ostream &, int err_id ) const;\n\n\t\tprotected:\n\n\t\t\tslot() noexcept;\n\t\t\t~slot() noexcept;\n\n\t\tpublic:\n\n\t\t\tusing base::put;\n\t\t\tusing base::has_value;\n\t\t\tusing base::value;\n\t\t\tusing base::reset;\n\t\t\tusing base::emplace;\n\t\t};\n\n\t\ttemplate \n\t\tslot * & tl_slot_ptr() noexcept\n\t\t{\n\t\t\tstatic thread_local slot * s;\n\t\t\treturn s;\n\t\t}\n\n\t\ttemplate \n\t\tvoid put_unexpected( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tif( slot * p = tl_slot_ptr() )\n\t\t\t{\n\t\t\t\tif( p->has_value() )\n\t\t\t\t{\n\t\t\t\t\tauto & p_id_e = p->value();\n\t\t\t\t\tif( p_id_e.err_id==id_e.err_id )\n\t\t\t\t\t{\n\t\t\t\t\t\t++p_id_e.e.count;\n\t\t\t\t\t\treturn;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\t(void) p->put( id_e_pair(id_e.err_id,diagnostic_info(&type)) );\n\t\t\t}\n\t\t}\n\n\t\ttemplate \n\t\tvoid put_verbose_diagnostic_info( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tif( slot * sl = tl_slot_ptr() )\n\t\t\t{\n\t\t\t\tif( auto * pv = sl->has_value() )\n\t\t\t\t{\n\t\t\t\t\tif( pv->err_id!=id_e.err_id )\n\t\t\t\t\t{\n\t\t\t\t\t\tpv->err_id = id_e.err_id;\n\t\t\t\t\t\tpv->e.reset();\n\t\t\t\t\t}\n\t\t\t\t\tpv->e.add(id_e.e);\n\t\t\t\t}\n\t\t\t\telse\n\t\t\t\t\tsl->emplace(id_e.err_id).e.add(id_e.e);\n\t\t\t}\n\t\t}\n\n\t\ttemplate \n\t\tvoid no_expect_slot( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tput_unexpected(id_e);\n\t\t\tput_verbose_diagnostic_info(id_e);\n\t\t}\n\n\t\ttemplate \n\t\tint put_slot( int err_id, E && e ) noexcept\n\t\t{\n\t\t\tusing T = typename std::remove_cv::type>::type;\n\t\t\tassert(err_id);\n\t\t\tif( slot * p = tl_slot_ptr() )\n\t\t\t\t(void) p->put( id_e_pair(err_id,std::forward(e)) );\n\t\t\telse\n\t\t\t{\n\t\t\t\tint c = tl_unexpected_enabled_counter();\n\t\t\t\tassert(c>=0);\n\t\t\t\tif( c )\n\t\t\t\t\tno_expect_slot( id_e_pair(err_id,std::forward(e)) );\n\t\t\t}\n\t\t\treturn 0;\n\t\t}\n\n\t\ttemplate \n\t\tslot::slot() noexcept\n\t\t{\n\t\t\tslot * & p = tl_slot_ptr();\n\t\t\tprev_ = p;\n\t\t\tp = this;\n\t\t}\n\n\t\ttemplate \n\t\tslot::~slot() noexcept\n\t\t{\n\t\t\tif( prev_ )\n\t\t\t{\n\t\t\t\toptional> & p = *prev_;\n\t\t\t\tp = std::move(*this);\n\t\t\t}\n\t\t\telse\n\t\t\t{\n\t\t\t\tint c = tl_unexpected_enabled_counter();\n\t\t\t\tassert(c>=0);\n\t\t\t\tif( c && has_value() )\n\t\t\t\t\tno_expect_slot(value());\n\t\t\t}\n\t\t\ttl_slot_ptr() = prev_;\n\t\t}\n\n\t\ttemplate \n\t\tbool slot::slot_print( std::ostream & os, int err_id ) const\n\t\t{\n\t\t\tassert(err_id);\n\t\t\tif( tl_slot_ptr()==this )\n\t\t\t\tif( id_e_pair const * id_e = has_value() )\n\t\t\t\t\tif( id_e->err_id==err_id )\n\t\t\t\t\t\treturn diagnostice)>::print(os,id_e->e);\n\t\t\treturn false;\n\t\t}\n\n\t\tenum class result_variant\n\t\t{\n\t\t\tvalue,\n\t\t\terr_id,\n\t\t\tcap\n\t\t};\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/teleport.hpp\n//<<<<<<<<\n#include \n\n#define LEAF_ERROR(...) ::boost::leaf::leaf_detail::new_error_at(__FILE__,__LINE__,__FUNCTION__,__VA_ARGS__)\n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\tclass error_category: public std::error_category\n\t\t{\n\t\t\tbool equivalent( int, std::error_condition const & ) const noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\tbool equivalent( std::error_code const &, int ) const noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\tchar const * name() const noexcept\n\t\t\t{\n\t\t\t\treturn \"LEAF error, use with leaf::handle_some or leaf::handle_all.\";\n\t\t\t}\n\n\t\t\tstd::string message( int condition ) const\n\t\t\t{\n\t\t\t\treturn name();\n\t\t\t}\n\t\t};\n\n\t\tinline error_category const & get_error_category() noexcept\n\t\t{\n\t\t\tstatic error_category cat;\n\t\t\treturn cat;\n\t\t}\n\t}\n\n\tinline bool is_error_id( std::error_code const & ec )\n\t{\n\t\treturn &ec.category() == &leaf_detail::get_error_category();\n\t}\n\n\t////////////////////////////////////////\n\n\tstruct e_original_ec { std::error_code value; };\n\n\tclass error_id: public std::error_code\n\t{\n\t\ttemplate \n\t\tstatic std::error_code import( ErrorCode && ec ) noexcept\n\t\t{\n\t\t\tstd::error_category const & cat = leaf_detail::get_error_category();\n\t\t\tif( ec && &ec.category()!=&cat )\n\t\t\t{\n\t\t\t\tint err_id = leaf_detail::new_id();\n\t\t\t\tleaf_detail::put_slot(err_id, e_original_ec{ec});\n\t\t\t\treturn std::error_code(err_id, cat);\n\t\t\t}\n\t\t\telse\n\t\t\t\treturn ec;\n\t\t}\n\n\tpublic:\n\n\t\terror_id() noexcept = default;\n\n\t\ttemplate \n\t\terror_id( std::error_code const & ec, E && ... e ) noexcept:\n\t\t\terror_code(import(ec))\n\t\t{\n\t\t\t(void) propagate(std::forward(e)...);\n\t\t}\n\n\t\ttemplate \n\t\terror_id( std::error_code && ec, E && ... e ) noexcept:\n\t\t\terror_code(import(std::move(ec)))\n\t\t{\n\t\t\t(void) propagate(std::forward(e)...);\n\t\t}\n\n\t\terror_id propagate() const noexcept\n\t\t{\n\t\t\tassert(is_error_id(*this));\n\t\t\treturn *this;\n\t\t}\n\n\t\ttemplate \n\t\terror_id propagate( E && ... e ) const noexcept\n\t\t{\n\t\t\tassert(is_error_id(*this));\n\t\t\tauto _ = { leaf_detail::put_slot(value(), std::forward(e))... };\n\t\t\t(void) _;\n\t\t\treturn *this;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\tinline error_id make_error( int err_id )\n\t\t{\n\t\t\tassert(err_id);\n\t\t\treturn error_id(std::error_code(err_id, get_error_category()));\n\t\t}\n\t}\n\n\ttemplate \n\terror_id new_error( E && ... e ) noexcept\n\t{\n\t\treturn leaf_detail::make_error(leaf_detail::new_id()).propagate(std::forward(e)...);\n\t}\n\n\tinline error_id next_error() noexcept\n\t{\n\t\treturn leaf_detail::make_error(leaf_detail::next_id());\n\t}\n\n\tinline error_id error_info::error() const noexcept\n\t{\n\t\tassert(has_error());\n\t\treturn leaf_detail::make_error(err_id_);\n\t}\n\n\tinline error_id leaf_detail::monitor_base::error() const noexcept\n\t{\n\t\tassert(ei_!=0);\n\t\treturn ei_->error();\n\t}\n\n\t////////////////////////////////////////\n\n\tstruct e_source_location\n\t{\n\t\tchar const * const file;\n\t\tint const line;\n\t\tchar const * const function;\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, e_source_location const & x )\n\t\t{\n\t\t\treturn os << leaf::type() << \": \" << x.file << '(' << x.line << \") in function \" << x.function;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <> struct is_error_type_default: std::true_type { };\n\n\t\ttemplate \n\t\terror_id new_error_at( char const * file, int line, char const * function, E && ... e ) noexcept\n\t\t{\n\t\t\tassert(file&&*file);\n\t\t\tassert(line>0);\n\t\t\tassert(function&&*function);\n\t\t\te_source_location sl { file, line, function }; // Temp object MSVC workaround\n\t\t\treturn new_error( std::move(sl), std::forward(e)... );\n\t\t}\n\t}\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/error.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/throw_exception.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/throw_exception.hpp\"\n#ifndef BOOST_LEAF_68F2D7C61AA111E9952B34BE67511AEB\n#define BOOST_LEAF_68F2D7C61AA111E9952B34BE67511AEB\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n#include \n\n#if defined(LEAF_NO_EXCEPTIONS) || defined(BOOST_EXCEPTIONS)\n\nnamespace boost\n{\n\t[[noreturn]] void throw_exception( std::exception const & ); // user defined\n}\n\nnamespace boost { namespace leaf {\n\n\ttemplate \n\t[[noreturn]] void throw_exception( T const & e )\n\t{\n\t\t::boost::throw_exception(e);\n\t}\n\n} }\n\n#else\n\nnamespace boost { namespace leaf {\n\n\ttemplate \n\t[[noreturn]] void throw_exception( T const & e )\n\t{\n\t\tthrow e;\n\t}\n\n} }\n\n#endif\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/throw_exception.hpp\n//<<<<<<<<\n#include \n\n#define LEAF_EXCEPTION(...) ::boost::leaf::leaf_detail::exception_at(__FILE__,__LINE__,__FUNCTION__,__VA_ARGS__)\n#define LEAF_THROW(...) ::boost::leaf::throw_exception(LEAF_EXCEPTION(__VA_ARGS__))\n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\tinline void enforce_std_exception( std::exception const & ) noexcept { }\n\n\t\ttemplate \n\t\tclass exception:\n\t\t\tpublic Ex,\n\t\t\tpublic error_id\n\t\t{\n\t\tpublic:\n\n\t\t\texception( exception const & ) = default;\n\t\t\texception( exception && ) = default;\n\n\t\t\ttemplate \n\t\t\texception( Ex && ex, E && ... e ) noexcept:\n\t\t\t\tEx(std::move(ex)),\n\t\t\t\terror_id(new_error(std::forward(e)...))\n\t\t\t{\n\t\t\t\tleaf_detail::enforce_std_exception(*this);\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\texception exception_at( char const * file, int line, char const * function, Ex && ex, E && ... e ) noexcept\n\t\t{\n\t\t\tassert(file&&*file);\n\t\t\tassert(line>0);\n\t\t\tassert(function&&*function);\n\t\t\treturn exception( std::forward(ex), e_source_location{file,line,function}, std::forward(e)... );\n\t\t}\n\t}\n\n\ttemplate \n\tleaf_detail::exception exception( Ex && ex, E && ... e ) noexcept\n\t{\n\t\treturn leaf_detail::exception( std::forward(ex), std::forward(e)... );\n\t}\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/throw.hpp\n//<<<<<<<<\n#include \n\n#define LEAF_AUTO(v,r) auto _r_##v = r; if( !_r_##v ) return _r_##v.error(); auto & v = *_r_##v\n#define LEAF_CHECK(r) {auto _r = r; if( !_r ) return _r.error();}\n\nnamespace boost { namespace leaf {\n\n\tclass bad_result: public std::exception { };\n\n\t////////////////////////////////////////\n\n\ttemplate \n\tclass result\n\t{\n\t\tusing dynamic_store_ptr = std::shared_ptr;\n\n\t\ttemplate \n\t\tfriend class result;\n\n\t\tunion\n\t\t{\n\t\t\tT value_;\n\t\t\tmutable int err_id_;\n\t\t\tdynamic_store_ptr cap_;\n\t\t};\n\n\t\tmutable leaf_detail::result_variant which_;\n\n\t\tvoid destroy() const noexcept\n\t\t{\n\t\t\tswitch( which_ )\n\t\t\t{\n\t\t\tcase leaf_detail::result_variant::value:\n\t\t\t\tvalue_.~T();\n\t\t\t\tbreak;\n\t\t\tcase leaf_detail::result_variant::err_id:\n\t\t\t\tbreak;\n\t\t\tdefault:\n\t\t\t\tassert(which_==leaf_detail::result_variant::cap);\n\t\t\t\tcap_.~dynamic_store_ptr();\n\t\t\t}\n\t\t\twhich_= (leaf_detail::result_variant)-1;\n\t\t}\n\n\t\ttemplate \n\t\tvoid copy_from( result const & x )\n\t\t{\n\t\t\tswitch( x.which_ )\n\t\t\t{\n\t\t\tcase leaf_detail::result_variant::value:\n\t\t\t\t(void) new(&value_) T(x.value_);\n\t\t\t\tbreak;\n\t\t\tcase leaf_detail::result_variant::err_id:\n\t\t\t\terr_id_ = x.err_id_;\n\t\t\t\tbreak;\n\t\t\tdefault:\n\t\t\t\tassert(x.which_==leaf_detail::result_variant::cap);\n\t\t\t\t(void) new(&cap_) dynamic_store_ptr(x.cap_);\n\t\t\t};\n\t\t\twhich_ = x.which_;\n\t\t}\n\n\t\ttemplate \n\t\tvoid move_from( result && x ) noexcept\n\t\t{\n\t\t\tswitch( x.which_ )\n\t\t\t{\n\t\t\tcase leaf_detail::result_variant:: value:\n\t\t\t\t(void) new(&value_) T(std::move(x.value_));\n\t\t\t\twhich_ = x.which_;\n\t\t\t\tbreak;\n\t\t\tcase leaf_detail::result_variant::err_id:\n\t\t\t\terr_id_ = x.err_id_;\n\t\t\t\twhich_ = x.which_;\n\t\t\t\tbreak;\n\t\t\tdefault:\n\t\t\t\tassert(x.which_==leaf_detail::result_variant::cap);\n\t\t\t\tif( dynamic_store_ptr cap = std::move(x.cap_) )\n\t\t\t\t{\n\t\t\t\t\tx.destroy();\n\t\t\t\t\tx.err_id_ = cap->err_id();\n\t\t\t\t\tx.which_ = leaf_detail::result_variant::err_id;\n\t\t\t\t\t(void) new(&cap_) dynamic_store_ptr(std::move(cap));\n\t\t\t\t}\n\t\t\t\telse\n\t\t\t\t\t(void) new(&cap_) dynamic_store_ptr(std::move(x.cap_));\n\t\t\t\twhich_ = leaf_detail::result_variant::cap;\n\t\t\t};\n\t\t}\n\n\tpublic:\n\n\t\ttypedef T value_type;\n\n\t\t~result() noexcept\n\t\t{\n\t\t\tdestroy();\n\t\t}\n\n\t\tresult( result && x ) noexcept\n\t\t{\n\t\t\tmove_from(std::move(x));\n\t\t}\n\n\t\tresult( result const & x )\n\t\t{\n\t\t\tcopy_from(x);\n\t\t}\n\n\t\ttemplate \n\t\tresult( result && x ) noexcept\n\t\t{\n\t\t\tmove_from(std::move(x));\n\t\t}\n\n\t\ttemplate \n\t\tresult( result const & x )\n\t\t{\n\t\t\tcopy_from(x);\n\t\t}\n\n\t\tresult():\n\t\t\tvalue_(T()),\n\t\t\twhich_(leaf_detail::result_variant::value)\n\t\t{\n\t\t}\n\n\t\tresult( T && v ) noexcept:\n\t\t\tvalue_(std::move(v)),\n\t\t\twhich_(leaf_detail::result_variant::value)\n\t\t{\n\t\t}\n\n\t\tresult( T const & v ):\n\t\t\tvalue_(v),\n\t\t\twhich_(leaf_detail::result_variant::value)\n\t\t{\n\t\t}\n\n\t\tresult( error_id const & err ) noexcept:\n\t\t\terr_id_(err.value()),\n\t\t\twhich_(leaf_detail::result_variant::err_id)\n\t\t{\n\t\t}\n\n\t\tresult( std::shared_ptr && ) noexcept;\n\n\t\tresult & operator=( result && x ) noexcept\n\t\t{\n\t\t\tdestroy();\n\t\t\tmove_from(std::move(x));\n\t\t\treturn *this;\n\t\t}\n\n\t\tresult & operator=( result const & x )\n\t\t{\n\t\t\tdestroy();\n\t\t\tcopy_from(x);\n\t\t\treturn *this;\n\t\t}\n\n\t\ttemplate \n\t\tresult & operator=( result && x ) noexcept\n\t\t{\n\t\t\tdestroy();\n\t\t\tmove_from(std::move(x));\n\t\t\treturn *this;\n\t\t}\n\n\t\ttemplate \n\t\tresult & operator=( result const & x )\n\t\t{\n\t\t\tdestroy();\n\t\t\tcopy_from(x);\n\t\t\treturn *this;\n\t\t}\n\n\t\texplicit operator bool() const noexcept\n\t\t{\n\t\t\treturn which_==leaf_detail::result_variant::value;\n\t\t}\n\n\t\tT const & value() const\n\t\t{\n\t\t\tif( which_==leaf_detail::result_variant::value )\n\t\t\t\treturn value_;\n\t\t\telse\n\t\t\t\tLEAF_THROW(bad_result());\n\t\t}\n\n\t\tT & value()\n\t\t{\n\t\t\tif( which_==leaf_detail::result_variant::value )\n\t\t\t\treturn value_;\n\t\t\telse\n\t\t\t\tLEAF_THROW(bad_result());\n\t\t}\n\n\t\tT const & operator*() const\n\t\t{\n\t\t\treturn value();\n\t\t}\n\n\t\tT & operator*()\n\t\t{\n\t\t\treturn value();\n\t\t}\n\n\t\ttemplate \n\t\terror_id error( E && ... e ) const noexcept\n\t\t{\n\t\t\tswitch( which_ )\n\t\t\t{\n\t\t\tcase leaf_detail::result_variant::value:\n\t\t\t\treturn { };\n\t\t\tcase leaf_detail::result_variant::cap:\n\t\t\t\t{\n\t\t\t\t\tdynamic_store_ptr cap = cap_;\n\t\t\t\t\tdestroy();\n\t\t\t\t\terr_id_ = cap->unload();\n\t\t\t\t\twhich_ = leaf_detail::result_variant::err_id;\n\t\t\t\t}\n\t\t\tdefault:\n\t\t\t\tassert(which_==leaf_detail::result_variant::err_id);\n\t\t\t\treturn leaf_detail::make_error(err_id_);\n\t\t\t}\n\t\t}\n\t};\n\n\t////////////////////////////////////////\n\n\ttemplate <>\n\tclass result:\n\t\tresult\n\t{\n\t\ttypedef result base;\n\n\t\ttemplate \n\t\tfriend class result;\n\n\t\tresult( result && rb ):\n\t\t\tbase(std::move(rb))\n\t\t{\n\t\t}\n\n\tpublic:\n\n\t\ttypedef void value_type;\n\n\t\t~result() noexcept\n\t\t{\n\t\t}\n\n\t\tresult() = default;\n\n\t\tresult( error_id const & err ) noexcept:\n\t\t\tbase(err)\n\t\t{\n\t\t}\n\n\t\tresult( std::shared_ptr && ) noexcept;\n\n\t\tvoid value() const\n\t\t{\n\t\t\t(void) base::value();\n\t\t}\n\n\t\tvoid operator*() const\n\t\t{\n\t\t\treturn value();\n\t\t}\n\n\t\tusing base::operator bool;\n\t\tusing base::error;\n\t};\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/result.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/detail/dynamic_store_impl.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/dynamic_store_impl.hpp\"\n#ifndef BOOST_LEAF_C86E4C4ED0F011E8BB777EB8A659E189\n#define BOOST_LEAF_C86E4C4ED0F011E8BB777EB8A659E189\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/detail/dynamic_store.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/dynamic_store.hpp\"\n#ifndef BOOST_LEAF_6CCC5F56124B11E9B6C4CB8C8C7F4AFC\n#define BOOST_LEAF_6CCC5F56124B11E9B6C4CB8C8C7F4AFC\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\tclass dynamic_store\n\t\t{\n\t\tprotected:\n\n\t\t\tdynamic_store() noexcept\n\t\t\t{\n\t\t\t}\n\n\t\t\t~dynamic_store() noexcept\n\t\t\t{\n\t\t\t}\n\n\t\tpublic:\n\n\t\t\tvirtual int err_id() const noexcept = 0;\n\t\t\tvirtual int unload() noexcept = 0;\n\t\t\tvirtual int unload( int error_code ) noexcept = 0;\n\t\t};\n\t}\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/dynamic_store.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/detail/static_store.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/static_store.hpp\"\n#ifndef BOOST_LEAF_AFBBD676B2FF11E8984C7976AE35F1A2\n#define BOOST_LEAF_AFBBD676B2FF11E8984C7976AE35F1A2\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/detail/teleport.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/teleport.hpp\"\n#ifndef BOOST_LEAF_B449A5821DA411E99B9A012588D1CC0E\n#define BOOST_LEAF_B449A5821DA411E99B9A012588D1CC0E\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/detail/optional.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/optional.hpp\"\n#ifndef BOOST_LEAF_47258FCCB6B411E8A1F35AA00C39171A\n#define BOOST_LEAF_47258FCCB6B411E8A1F35AA00C39171A\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tclass optional\n\t\t{\n\t\t\tunion { T value_; };\n\t\t\tbool has_value_;\n\n\t\tpublic:\n\n\t\t\ttypedef T value_type;\n\t\t\toptional() noexcept:\n\t\t\t\thas_value_(false)\n\t\t\t{\n\t\t\t}\n\n\t\t\toptional( optional const & x ):\n\t\t\t\thas_value_(x.has_value_)\n\t\t\t{\n\t\t\t\tif( x.has_value_ )\n\t\t\t\t\t(void) new (&value_) T( x.value_ );\n\t\t\t}\n\n\t\t\toptional( optional && x ) noexcept:\n\t\t\t\thas_value_(x.has_value_)\n\t\t\t{\n\t\t\t\tif( x.has_value_ )\n\t\t\t\t{\n\t\t\t\t\t(void) new (&value_) T( std::move(x.value_) );\n\t\t\t\t\tx.value_.~T();\n\t\t\t\t\tx.has_value_ = false;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\toptional( T const & v ):\n\t\t\t\tvalue_(v),\n\t\t\t\thas_value_(true)\n\t\t\t{\n\t\t\t}\n\n\t\t\toptional( T && v ) noexcept:\n\t\t\t\tvalue_(std::move(v)),\n\t\t\t\thas_value_(true)\n\t\t\t{\n\t\t\t}\n\n\t\t\toptional & operator=( optional const & x )\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\tif( x.has_value() )\n\t\t\t\t\tput(x.value());\n\t\t\t\treturn *this;\n\t\t\t}\n\n\t\t\toptional & operator=( optional && x ) noexcept\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\tif( x.has_value() )\n\t\t\t\t\tput(std::move(x).value());\n\t\t\t\treturn *this;\n\t\t\t}\n\n\t\t\t~optional() noexcept\n\t\t\t{\n\t\t\t\treset();\n\t\t\t}\n\n\t\t\tvoid reset() noexcept\n\t\t\t{\n\t\t\t\tif( has_value() )\n\t\t\t\t{\n\t\t\t\t\tvalue_.~T();\n\t\t\t\t\thas_value_=false;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\ttemplate \n\t\t\tT & emplace( A && ... a )\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(std::forward(a)...);\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & put( T const & v )\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(v);\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & put( T && v ) noexcept\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(std::move(v));\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT const * has_value() const noexcept\n\t\t\t{\n\t\t\t\treturn has_value_ ? &value_ : 0;\n\t\t\t}\n\n\t\t\tT * has_value() noexcept\n\t\t\t{\n\t\t\t\treturn has_value_ ? &value_ : 0;\n\t\t\t}\n\n\t\t\tT const & value() const & noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & value() & noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT const && value() const && noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT value() && noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\tT tmp(std::move(value_));\n\t\t\t\treset();\n\t\t\t\treturn tmp;\n\t\t\t}\n\t\t};\n\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/optional.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/detail/print.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/print.hpp\"\n#ifndef BOOST_LEAF_3BAB50A2B87E11E89EEB30600C39171A\n#define BOOST_LEAF_3BAB50A2B87E11E89EEB30600C39171A\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tinline char const * check_prefix( char const * t, char const (&prefix)[N] )\n\t\t{\n\t\t\treturn std::strncmp(t,prefix,sizeof(prefix)-1)==0 ? t+sizeof(prefix)-1 : t;\n\t\t}\n\t}\n\n\ttemplate \n\tchar const * type() noexcept\n\t{\n\tchar const * t =\n#ifdef __FUNCSIG__\n\t\t__FUNCSIG__;\n#else\n\t\t__PRETTY_FUNCTION__;\n#endif\n#if defined(__clang__)\n\t\tassert(leaf_detail::check_prefix(t,\"const char *boost::leaf::type() \")==t+32);\n\t\treturn t+32;\n#elif defined(__GNUC__)\n\t\tassert(leaf_detail::check_prefix(t,\"const char* boost::leaf::type() \")==t+32);\n\t\treturn t+32;\n#else\n\t\tchar const * clang_style = leaf_detail::check_prefix(t,\"const char *boost::leaf::type() \");\n\t\tif( clang_style!=t )\n\t\t\treturn clang_style;\n\t\tchar const * gcc_style = leaf_detail::check_prefix(t,\"const char* boost::leaf::type() \");\n\t\tif( gcc_style!=t )\n\t\t\treturn gcc_style;\n#endif\n\t\treturn t;\n\t}\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct is_printable: std::false_type\n\t\t{\n\t\t};\n\n\t\ttemplate \n\t\tstruct is_printable()<(), void())>: std::true_type\n\t\t{\n\t\t};\n\n\t\t////////////////////////////////////////\n\n\t\ttemplate \n\t\tstruct has_printable_member_value: std::false_type\n\t\t{\n\t\t};\n\n\t\ttemplate \n\t\tstruct has_printable_member_value()<().value, void())>: std::true_type\n\t\t{\n\t\t};\n\n\t\t////////////////////////////////////////\n\n\t\ttemplate ::value, bool ValuePrintable=has_printable_member_value::value>\n\t\tstruct diagnostic;\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & x )\n\t\t\t{\n\t\t\t\tos << x;\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & x )\n\t\t\t{\n\t\t\t\tos << type() << \": \" << x.value;\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & )\n\t\t\t{\n\t\t\t\tos << type() << \": N/A\";\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, std::exception_ptr const & )\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/print.hpp\n//<<<<<<<<\n#include \n#include \n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\tclass id_factory\n\t\t{\n\t\t\tid_factory( id_factory const & ) = delete;\n\t\t\tid_factory & operator=( id_factory const & ) = delete;\n\n\t\t\tstatic int new_err_id() noexcept\n\t\t\t{\n\t\t\t\tstatic std::atomic c;\n\t\t\t\tif( unsigned id = ++c )\n\t\t\t\t\treturn int(id);\n\t\t\t\telse\n\t\t\t\t\treturn int(++c);\n\t\t\t}\n\n\t\t\tint next_id_;\n\t\t\tint last_id_;\n\n\t\t\tid_factory() noexcept:\n\t\t\t\tnext_id_(new_err_id()),\n\t\t\t\tlast_id_(next_id_-1)\n\t\t\t{\n\t\t\t}\n\n\t\tpublic:\n\n\t\t\tstatic id_factory & tl_instance() noexcept\n\t\t\t{\n\t\t\t\tstatic thread_local id_factory s;\n\t\t\t\treturn s;\n\t\t\t}\n\n\t\t\tint last_id() noexcept\n\t\t\t{\n\t\t\t\treturn last_id_;\n\t\t\t}\n\n\t\t\tint new_id() noexcept\n\t\t\t{\n\t\t\t\tint id = last_id_ = next_id_;\n\t\t\t\tnext_id_ = new_err_id();\n\t\t\t\treturn id;\n\t\t\t}\n\n\t\t\tint next_id() noexcept\n\t\t\t{\n\t\t\t\treturn next_id_;\n\t\t\t}\n\t\t};\n\n\t\tinline int last_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().last_id();\n\t\t}\n\n\t\tinline int new_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().new_id();\n\t\t}\n\n\t\tinline int next_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().next_id();\n\t\t}\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\tclass slot_base\n\t\t{\n\t\t\tslot_base( slot_base const & ) = delete;\n\t\t\tslot_base & operator=( slot_base const & ) = delete;\n\n\t\t\tvirtual bool slot_print( std::ostream &, int err_id ) const = 0;\n\n\t\tpublic:\n\n\t\t\tstatic void print( std::ostream & os, int err_id )\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t\tfor( slot_base const * p = first(); p; p=p->next_ )\n\t\t\t\t\tif( p->slot_print(os,err_id) )\n\t\t\t\t\t\tos << std::endl;\n\t\t\t}\n\n\t\tprotected:\n\n\t\t\tstatic slot_base const * & first() noexcept\n\t\t\t{\n\t\t\t\tstatic thread_local slot_base const * p = 0;\n\t\t\t\treturn p;\n\t\t\t}\n\n\t\t\tslot_base const * const next_;\n\n\t\t\tslot_base() noexcept:\n\t\t\t\tnext_(first())\n\t\t\t{\n\t\t\t\tfirst() = this;\n\t\t\t}\n\n\t\t\t~slot_base() noexcept\n\t\t\t{\n\t\t\t\tslot_base const * & p = first();\n\t\t\t\tassert(p==this);\n\t\t\t\tp = next_;\n\t\t\t}\n\t\t};\n\t}\n\n\t////////////////////////////////////////\n\n\tclass error_id;\n\tnamespace leaf_detail { class captured_exception; }\n\n\tclass error_info\n\t{\n\t\terror_info( error_info const & ) = delete;\n\t\terror_info & operator=( error_info const & ) = delete;\n\n\t\tint const err_id_;\n\t\tstd::exception const * const ex_;\n\t\tleaf_detail::captured_exception const * const cap_;\n\t\tvoid (* const print_ex_)( std::ostream &, std::exception const *, leaf_detail::captured_exception const * );\n\n\tpublic:\n\n\t\texplicit error_info( int err_id ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(0),\n\t\t\tcap_(0),\n\t\t\tprint_ex_(0)\n\t\t{\n\t\t}\n\n\t\terror_info( int err_id, std::exception const * ex, void (*print_ex)(std::ostream &, std::exception const *, leaf_detail::captured_exception const *) ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(ex),\n\t\t\tcap_(0),\n\t\t\tprint_ex_(print_ex)\n\t\t{\n\t\t\tassert(print_ex_!=0);\n\t\t}\n\n\t\terror_info( int err_id, std::exception const * ex, leaf_detail::captured_exception const * cap, void (*print_ex)(std::ostream &, std::exception const *, leaf_detail::captured_exception const *) ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(ex),\n\t\t\tcap_(cap),\n\t\t\tprint_ex_(print_ex)\n\t\t{\n\t\t\tassert(print_ex_!=0);\n\t\t}\n\n\t\tint err_id() const noexcept\n\t\t{\n\t\t\treturn err_id_;\n\t\t}\n\n\t\tbool has_error() const noexcept\n\t\t{\n\t\t\treturn err_id_!=0;\n\t\t}\n\n\t\terror_id error() const noexcept;\n\n\t\tbool has_exception() const noexcept\n\t\t{\n\t\t\treturn print_ex_!=0;\n\t\t}\n\n\t\tstd::exception const * exception() const noexcept\n\t\t{\n\t\t\tassert(has_exception());\n\t\t\treturn ex_;\n\t\t}\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, error_info const & x )\n\t\t{\n\t\t\tos << \"LEAF Error ID: \" << x.err_id_ << std::endl;\n\t\t\tif( x.print_ex_ )\n\t\t\t\tx.print_ex_(os,x.ex_,x.cap_);\n\t\t\tleaf_detail::slot_base::print(os,x.err_id_);\n\t\t\treturn os;\n\t\t}\n\t};\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct has_data_member_value\n\t\t{\n\t\t\tstatic constexpr bool value=false;\n\t\t};\n\n\t\ttemplate \n\t\tstruct has_data_member_value().value, void())>\n\t\t{\n\t\t\tstatic constexpr bool value=std::is_member_object_pointer::value;\n\t\t};\n\n\t\ttemplate \n\t\tstruct is_error_type_default\n\t\t{\n\t\t\tstatic constexpr bool value = has_data_member_value::value || std::is_base_of::value;\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\t}\n\n\ttemplate \n\tstruct is_error_type: leaf_detail::is_error_type_default\n\t{\n\t};\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\tclass monitor_base\n\t\t{\n\t\t\tmonitor_base( monitor_base const & ) = delete;\n\t\t\tmonitor_base & operator=( monitor_base const & ) = delete;\n\n\t\t\tmutable error_info const * ei_;\n\n\t\tprotected:\n\n\t\t\tmonitor_base() noexcept:\n\t\t\t\tei_(0)\n\t\t\t{\n\t\t\t}\n\n\t\t\tmonitor_base( monitor_base && x ) noexcept:\n\t\t\t\tei_(0)\n\t\t\t{\n\t\t\t\tx.ei_ = 0;\n\t\t\t}\n\n\t\t\tvoid set_error_info( error_info const & ei ) const noexcept\n\t\t\t{\n\t\t\t\tei_ = &ei;\n\t\t\t}\n\n\t\t\terror_info const & get_error_info() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn *ei_;\n\t\t\t}\n\n\t\tpublic:\n\n\t\t\tbool has_error() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->has_error();\n\t\t\t}\n\n\t\t\terror_id error() const noexcept;\n\n\t\t\tbool has_exception() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->has_exception();\n\t\t\t}\n\n\t\t\tstd::exception const * exception() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->exception();\n\t\t\t}\n\t\t};\n\t}\n\n\tclass diagnostic_info: leaf_detail::monitor_base\n\t{\n\tpublic:\n\n\t\tchar const * (*first_type)();\n\t\tint count;\n\n\t\texplicit diagnostic_info( char const * (*first_type)() ) noexcept:\n\t\t\tfirst_type(first_type),\n\t\t\tcount(1)\n\t\t{\n\t\t}\n\n\t\tusing monitor_base::set_error_info;\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, diagnostic_info const & x )\n\t\t{\n\t\t\tassert(x.first_type!=0);\n\t\t\tassert(x.count>0);\n\t\t\tos << x.get_error_info() << \"diagnostic_info: Detected \";\n\t\t\tif( x.count==1 )\n\t\t\t\tos << \"1 attempt to communicate an E-object\";\n\t\t\telse\n\t\t\t\tos << x.count << \" attempts to communicate unexpected E-objects, the first one\";\n\t\t\treturn os << \" of type \" << x.first_type() << std::endl;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, diagnostic_info const & ) noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t}\n\n\tclass verbose_diagnostic_info: leaf_detail::monitor_base\n\t{\n\t\tstd::string s_;\n\t\tstd::set already_;\n\n\tpublic:\n\n\t\tverbose_diagnostic_info() noexcept\n\t\t{\n\t\t}\n\n\t\tusing monitor_base::set_error_info;\n\n\t\tvoid reset() noexcept\n\t\t{\n\t\t\ts_.clear();\n\t\t\talready_.clear();\n\t\t}\n\n\t\ttemplate \n\t\tvoid add( E const & e )\n\t\t{\n\t\t\tstd::stringstream s;\n\t\t\tif( leaf_detail::diagnostic::print(s,e) && already_.insert(&type).second )\n\t\t\t{\n\t\t\t\ts << std::endl;\n\t\t\t\ts_ += s.str();\n\t\t\t}\n\t\t}\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, verbose_diagnostic_info const & x )\n\t\t{\n\t\t\tos <<\n\t\t\t\tx.get_error_info() <<\n\t\t\t\t\"verbose_diagnostic_info:\" << std::endl <<\n\t\t\t\tx.s_;\n\t\t\treturn os;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, verbose_diagnostic_info const & ) noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct id_e_pair\n\t\t{\n\t\t\tint err_id;\n\t\t\tE e;\n\n\t\t\texplicit id_e_pair( int err_id ) noexcept:\n\t\t\t\terr_id(err_id)\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\n\t\t\tid_e_pair( int err_id, E const & e ):\n\t\t\t\terr_id(err_id),\n\t\t\t\te(e)\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\n\t\t\tid_e_pair( int err_id, E && e ) noexcept:\n\t\t\t\terr_id(err_id),\n\t\t\t\te(std::forward(e))\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\t\t};\n\n\t\tinline int & tl_unexpected_enabled_counter() noexcept\n\t\t{\n\t\t\tstatic thread_local int c;\n\t\t\treturn c;\n\t\t}\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tclass slot:\n\t\t\tslot_base,\n\t\t\toptional>\n\t\t{\n\t\t\tslot( slot const & ) = delete;\n\t\t\tslot & operator=( slot const & ) = delete;\n\t\t\ttypedef optional> base;\n\t\t\tslot * prev_;\n\t\t\tstatic_assert(is_error_type::value,\"Not an error type\");\n\n\t\t\tbool slot_print( std::ostream &, int err_id ) const;\n\n\t\tprotected:\n\n\t\t\tslot() noexcept;\n\t\t\t~slot() noexcept;\n\n\t\tpublic:\n\n\t\t\tusing base::put;\n\t\t\tusing base::has_value;\n\t\t\tusing base::value;\n\t\t\tusing base::reset;\n\t\t\tusing base::emplace;\n\t\t};\n\n\t\ttemplate \n\t\tslot * & tl_slot_ptr() noexcept\n\t\t{\n\t\t\tstatic thread_local slot * s;\n\t\t\treturn s;\n\t\t}\n\n\t\ttemplate \n\t\tvoid put_unexpected( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tif( slot * p = tl_slot_ptr() )\n\t\t\t{\n\t\t\t\tif( p->has_value() )\n\t\t\t\t{\n\t\t\t\t\tauto & p_id_e = p->value();\n\t\t\t\t\tif( p_id_e.err_id==id_e.err_id )\n\t\t\t\t\t{\n\t\t\t\t\t\t++p_id_e.e.count;\n\t\t\t\t\t\treturn;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\t(void) p->put( id_e_pair(id_e.err_id,diagnostic_info(&type)) );\n\t\t\t}\n\t\t}\n\n\t\ttemplate \n\t\tvoid put_verbose_diagnostic_info( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tif( slot * sl = tl_slot_ptr() )\n\t\t\t{\n\t\t\t\tif( auto * pv = sl->has_value() )\n\t\t\t\t{\n\t\t\t\t\tif( pv->err_id!=id_e.err_id )\n\t\t\t\t\t{\n\t\t\t\t\t\tpv->err_id = id_e.err_id;\n\t\t\t\t\t\tpv->e.reset();\n\t\t\t\t\t}\n\t\t\t\t\tpv->e.add(id_e.e);\n\t\t\t\t}\n\t\t\t\telse\n\t\t\t\t\tsl->emplace(id_e.err_id).e.add(id_e.e);\n\t\t\t}\n\t\t}\n\n\t\ttemplate \n\t\tvoid no_expect_slot( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tput_unexpected(id_e);\n\t\t\tput_verbose_diagnostic_info(id_e);\n\t\t}\n\n\t\ttemplate \n\t\tint put_slot( int err_id, E && e ) noexcept\n\t\t{\n\t\t\tusing T = typename std::remove_cv::type>::type;\n\t\t\tassert(err_id);\n\t\t\tif( slot * p = tl_slot_ptr() )\n\t\t\t\t(void) p->put( id_e_pair(err_id,std::forward(e)) );\n\t\t\telse\n\t\t\t{\n\t\t\t\tint c = tl_unexpected_enabled_counter();\n\t\t\t\tassert(c>=0);\n\t\t\t\tif( c )\n\t\t\t\t\tno_expect_slot( id_e_pair(err_id,std::forward(e)) );\n\t\t\t}\n\t\t\treturn 0;\n\t\t}\n\n\t\ttemplate \n\t\tslot::slot() noexcept\n\t\t{\n\t\t\tslot * & p = tl_slot_ptr();\n\t\t\tprev_ = p;\n\t\t\tp = this;\n\t\t}\n\n\t\ttemplate \n\t\tslot::~slot() noexcept\n\t\t{\n\t\t\tif( prev_ )\n\t\t\t{\n\t\t\t\toptional> & p = *prev_;\n\t\t\t\tp = std::move(*this);\n\t\t\t}\n\t\t\telse\n\t\t\t{\n\t\t\t\tint c = tl_unexpected_enabled_counter();\n\t\t\t\tassert(c>=0);\n\t\t\t\tif( c && has_value() )\n\t\t\t\t\tno_expect_slot(value());\n\t\t\t}\n\t\t\ttl_slot_ptr() = prev_;\n\t\t}\n\n\t\ttemplate \n\t\tbool slot::slot_print( std::ostream & os, int err_id ) const\n\t\t{\n\t\t\tassert(err_id);\n\t\t\tif( tl_slot_ptr()==this )\n\t\t\t\tif( id_e_pair const * id_e = has_value() )\n\t\t\t\t\tif( id_e->err_id==err_id )\n\t\t\t\t\t\treturn diagnostice)>::print(os,id_e->e);\n\t\t\treturn false;\n\t\t}\n\n\t\tenum class result_variant\n\t\t{\n\t\t\tvalue,\n\t\t\terr_id,\n\t\t\tcap\n\t\t};\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/teleport.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/detail/function_traits.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/function_traits.hpp\"\n#ifndef BOOST_LEAF_14440B9CF07011E88377FD4B0ABE8030\n#define BOOST_LEAF_14440B9CF07011E88377FD4B0ABE8030\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/detail/mp11.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/mp11.hpp\"\n#ifndef BOOST_LEAF_91843B04108711E9AA4E56D98C7F4AFC\n#define BOOST_LEAF_91843B04108711E9AA4E56D98C7F4AFC\n\n// Copyright 2015-2017 Peter Dimov.\n// Copyright 2019 Emil Dotchevski.\n//\n// Distributed under the Boost Software License, Version 1.0.\n//\n// See accompanying file LICENSE_1_0.txt or copy at\n// http://www.boost.org/LICENSE_1_0.txt\n\n#include \n#include \n\nnamespace boost { namespace leaf { namespace leaf_detail_mp11 {\n\n// mp_list\ntemplate struct mp_list\n{\n};\n\n// mp_identity\ntemplate struct mp_identity\n{\n using type = T;\n};\n\n// mp_inherit\ntemplate struct mp_inherit: T... {};\n\n// mp_if, mp_if_c\nnamespace detail\n{\n\ntemplate struct mp_if_c_impl\n{\n};\n\ntemplate struct mp_if_c_impl\n{\n using type = T;\n};\n\ntemplate struct mp_if_c_impl\n{\n using type = E;\n};\n\n} // namespace detail\n\ntemplate using mp_if_c = typename detail::mp_if_c_impl::type;\ntemplate using mp_if = typename detail::mp_if_c_impl(C::value), T, E...>::type;\n\n// mp_bool\ntemplate using mp_bool = std::integral_constant;\n\nusing mp_true = mp_bool;\nusing mp_false = mp_bool;\n\n// mp_to_bool\ntemplate using mp_to_bool = mp_bool( T::value )>;\n\n// mp_not\ntemplate using mp_not = mp_bool< !T::value >;\n\n// mp_int\ntemplate using mp_int = std::integral_constant;\n\n// mp_size_t\ntemplate using mp_size_t = std::integral_constant;\n\n// mp_set_contains\nnamespace detail\n{\n\ntemplate struct mp_set_contains_impl;\n\ntemplate class L, class... T, class V> struct mp_set_contains_impl, V>\n{\n using type = mp_to_bool, mp_inherit...> > >;\n};\n\n} // namespace detail\n\ntemplate using mp_set_contains = typename detail::mp_set_contains_impl::type;\n\n// mp_set_push_back\nnamespace detail\n{\n\ntemplate struct mp_set_push_back_impl;\n\ntemplate class L, class... U> struct mp_set_push_back_impl>\n{\n using type = L;\n};\n\ntemplate class L, class... U, class T1, class... T> struct mp_set_push_back_impl, T1, T...>\n{\n using S = mp_if, T1>, L, L>;\n using type = typename mp_set_push_back_impl::type;\n};\n\n} // namespace detail\n\ntemplate using mp_set_push_back = typename detail::mp_set_push_back_impl::type;\n\n// mp_unique\nnamespace detail\n{\n\ntemplate struct mp_unique_impl;\n\ntemplate class L, class... T> struct mp_unique_impl>\n{\n using type = mp_set_push_back, T...>;\n};\n\n} // namespace detail\n\ntemplate using mp_unique = typename detail::mp_unique_impl::type;\n\n// mp_append\n\nnamespace detail\n{\n\ntemplate struct mp_append_impl;\n\ntemplate<> struct mp_append_impl<>\n{\n using type = mp_list<>;\n};\n\ntemplate class L, class... T> struct mp_append_impl>\n{\n using type = L;\n};\n\ntemplate class L1, class... T1, template class L2, class... T2, class... Lr> struct mp_append_impl, L2, Lr...>\n{\n using type = typename mp_append_impl, Lr...>::type;\n};\n\n}\n\ntemplate using mp_append = typename detail::mp_append_impl::type;\n\n// mp_front\nnamespace detail\n{\n\ntemplate struct mp_front_impl\n{\n// An error \"no type named 'type'\" here means that the argument to mp_front\n// is either not a list, or is an empty list\n};\n\ntemplate class L, class T1, class... T> struct mp_front_impl>\n{\n using type = T1;\n};\n\n} // namespace detail\n\ntemplate using mp_front = typename detail::mp_front_impl::type;\n\n// mp_pop_front\nnamespace detail\n{\n\ntemplate struct mp_pop_front_impl\n{\n// An error \"no type named 'type'\" here means that the argument to mp_pop_front\n// is either not a list, or is an empty list\n};\n\ntemplate class L, class T1, class... T> struct mp_pop_front_impl>\n{\n using type = L;\n};\n\n} // namespace detail\n\ntemplate using mp_pop_front = typename detail::mp_pop_front_impl::type;\n\n// mp_first\ntemplate using mp_first = mp_front;\n\n// mp_rest\ntemplate using mp_rest = mp_pop_front;\n\n// mp_remove_if\nnamespace detail\n{\n\ntemplate class P> struct mp_remove_if_impl;\n\ntemplate class L, class... T, template class P> struct mp_remove_if_impl, P>\n{\n template using _f = mp_if, mp_list<>, mp_list>;\n using type = mp_append, _f...>;\n};\n\n} // namespace detail\n\ntemplate class P> using mp_remove_if = typename detail::mp_remove_if_impl::type;\n\n} } }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/mp11.hpp\n//<<<<<<<<\n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tusing void_t = void;\n\n\t\ttemplate\n\t\tstruct function_traits\n\t\t{\n\t\t};\n\n\t\ttemplate\n\t\tstruct function_traits>\n\t\t{\n\t\tprivate:\n\n\t\t\ttypedef function_traits tr;\n\n\t\tpublic:\n\n\t\t\ttypedef typename tr::return_type return_type;\n\t\t\tstatic constexpr int arity = tr::arity - 1;\n\n\t\t\tusing mp_args = typename leaf_detail_mp11::mp_rest;\n\n\t\t\ttemplate \n\t\t\tstruct arg:\n\t\t\t\ttr::template arg\n\t\t\t{\n\t\t\t};\n\t\t};\n\n\t\ttemplate\n\t\tstruct function_traits\n\t\t{\n\t\t\ttypedef R return_type;\n\t\t\tstatic constexpr int arity = sizeof...(A);\n\n\t\t\tusing mp_args = leaf_detail_mp11::mp_list;\n\n\t\t\ttemplate \n\t\t\tstruct arg\n\t\t\t{\n\t\t\t\tstatic_assert(I < arity, \"I out of range\");\n\t\t\t\ttypedef typename std::tuple_element>::type type;\n\t\t\t};\n\t\t};\n\n\t\ttemplate struct function_traits : function_traits { };\n\t\ttemplate struct function_traits : function_traits { };\n\t\ttemplate struct function_traits : function_traits { };\n\t\ttemplate struct function_traits : function_traits { };\n\t\ttemplate struct function_traits : function_traits { };\n\t\ttemplate struct function_traits : function_traits { };\n\t} // namespace leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/function_traits.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/detail/mp11.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/mp11.hpp\"\n#ifndef BOOST_LEAF_91843B04108711E9AA4E56D98C7F4AFC\n#define BOOST_LEAF_91843B04108711E9AA4E56D98C7F4AFC\n\n// Copyright 2015-2017 Peter Dimov.\n// Copyright 2019 Emil Dotchevski.\n//\n// Distributed under the Boost Software License, Version 1.0.\n//\n// See accompanying file LICENSE_1_0.txt or copy at\n// http://www.boost.org/LICENSE_1_0.txt\n\n#include \n#include \n\nnamespace boost { namespace leaf { namespace leaf_detail_mp11 {\n\n// mp_list\ntemplate struct mp_list\n{\n};\n\n// mp_identity\ntemplate struct mp_identity\n{\n using type = T;\n};\n\n// mp_inherit\ntemplate struct mp_inherit: T... {};\n\n// mp_if, mp_if_c\nnamespace detail\n{\n\ntemplate struct mp_if_c_impl\n{\n};\n\ntemplate struct mp_if_c_impl\n{\n using type = T;\n};\n\ntemplate struct mp_if_c_impl\n{\n using type = E;\n};\n\n} // namespace detail\n\ntemplate using mp_if_c = typename detail::mp_if_c_impl::type;\ntemplate using mp_if = typename detail::mp_if_c_impl(C::value), T, E...>::type;\n\n// mp_bool\ntemplate using mp_bool = std::integral_constant;\n\nusing mp_true = mp_bool;\nusing mp_false = mp_bool;\n\n// mp_to_bool\ntemplate using mp_to_bool = mp_bool( T::value )>;\n\n// mp_not\ntemplate using mp_not = mp_bool< !T::value >;\n\n// mp_int\ntemplate using mp_int = std::integral_constant;\n\n// mp_size_t\ntemplate using mp_size_t = std::integral_constant;\n\n// mp_set_contains\nnamespace detail\n{\n\ntemplate struct mp_set_contains_impl;\n\ntemplate class L, class... T, class V> struct mp_set_contains_impl, V>\n{\n using type = mp_to_bool, mp_inherit...> > >;\n};\n\n} // namespace detail\n\ntemplate using mp_set_contains = typename detail::mp_set_contains_impl::type;\n\n// mp_set_push_back\nnamespace detail\n{\n\ntemplate struct mp_set_push_back_impl;\n\ntemplate class L, class... U> struct mp_set_push_back_impl>\n{\n using type = L;\n};\n\ntemplate class L, class... U, class T1, class... T> struct mp_set_push_back_impl, T1, T...>\n{\n using S = mp_if, T1>, L, L>;\n using type = typename mp_set_push_back_impl::type;\n};\n\n} // namespace detail\n\ntemplate using mp_set_push_back = typename detail::mp_set_push_back_impl::type;\n\n// mp_unique\nnamespace detail\n{\n\ntemplate struct mp_unique_impl;\n\ntemplate class L, class... T> struct mp_unique_impl>\n{\n using type = mp_set_push_back, T...>;\n};\n\n} // namespace detail\n\ntemplate using mp_unique = typename detail::mp_unique_impl::type;\n\n// mp_append\n\nnamespace detail\n{\n\ntemplate struct mp_append_impl;\n\ntemplate<> struct mp_append_impl<>\n{\n using type = mp_list<>;\n};\n\ntemplate class L, class... T> struct mp_append_impl>\n{\n using type = L;\n};\n\ntemplate class L1, class... T1, template class L2, class... T2, class... Lr> struct mp_append_impl, L2, Lr...>\n{\n using type = typename mp_append_impl, Lr...>::type;\n};\n\n}\n\ntemplate using mp_append = typename detail::mp_append_impl::type;\n\n// mp_front\nnamespace detail\n{\n\ntemplate struct mp_front_impl\n{\n// An error \"no type named 'type'\" here means that the argument to mp_front\n// is either not a list, or is an empty list\n};\n\ntemplate class L, class T1, class... T> struct mp_front_impl>\n{\n using type = T1;\n};\n\n} // namespace detail\n\ntemplate using mp_front = typename detail::mp_front_impl::type;\n\n// mp_pop_front\nnamespace detail\n{\n\ntemplate struct mp_pop_front_impl\n{\n// An error \"no type named 'type'\" here means that the argument to mp_pop_front\n// is either not a list, or is an empty list\n};\n\ntemplate class L, class T1, class... T> struct mp_pop_front_impl>\n{\n using type = L;\n};\n\n} // namespace detail\n\ntemplate using mp_pop_front = typename detail::mp_pop_front_impl::type;\n\n// mp_first\ntemplate using mp_first = mp_front;\n\n// mp_rest\ntemplate using mp_rest = mp_pop_front;\n\n// mp_remove_if\nnamespace detail\n{\n\ntemplate class P> struct mp_remove_if_impl;\n\ntemplate class L, class... T, template class P> struct mp_remove_if_impl, P>\n{\n template using _f = mp_if, mp_list<>, mp_list>;\n using type = mp_append, _f...>;\n};\n\n} // namespace detail\n\ntemplate class P> using mp_remove_if = typename detail::mp_remove_if_impl::type;\n\n} } }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/mp11.hpp\n//<<<<<<<<\n#include \n\nnamespace boost { namespace leaf {\n\n\ttemplate \n\tstruct failed\n\t{\n\t\tR value;\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct is_error_type_default>: std::false_type\n\t\t{\n\t\t};\n\t}\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate ::value, bool IsErrorCodeOrErrorCondition = std::is_error_code_enum::value | std::is_error_condition_enum::value>\n\t\tstruct match_traits;\n\n\t\ttemplate \n\t\tstruct match_traits\n\t\t{\n\t\t\tusing enumerator = T;\n\t\t\tusing e_type = enumerator;\n\t\t\tusing match_type = enumerator;\n\n\t\t\tstatic match_type const & get( e_type const & e ) noexcept\n\t\t\t{\n\t\t\t\treturn e;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct match_traits\n\t\t{\n\t\t\tusing enumerator = decltype(T::value);\n\t\t\tusing e_type = T;\n\t\t\tusing match_type = enumerator;\n\n\t\t\tstatic match_type const & get( e_type const & e ) noexcept\n\t\t\t{\n\t\t\t\treturn e.value;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct match_traits\n\t\t{\n\t\t\tusing enumerator = T;\n\t\t\tusing e_type = std::error_code;\n\t\t\tusing match_type = e_type;\n\n\t\t\tstatic match_type const & get( e_type const & e ) noexcept\n\t\t\t{\n\t\t\t\treturn e;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tbool check_value_pack( MatchType const & x, Enumerator v ) noexcept\n\t\t{\n\t\t\treturn x==v;\n\t\t}\n\n\t\ttemplate \n\t\tbool check_value_pack( MatchType const & x, Enumerator v1, EnumeratorRest ... v_rest ) noexcept\n\t\t{\n\t\t\treturn x==v1 || check_value_pack(x,v_rest...);\n\t\t}\n\n\t\ttemplate \n\t\tbool check_exception_pack( std::exception const * ex, Ex const * ) noexcept\n\t\t{\n\t\t\treturn dynamic_cast(ex)!=0;\n\t\t}\n\n\t\ttemplate \n\t\tbool check_exception_pack( std::exception const * ex, Ex const *, ExRest const * ... ex_rest ) noexcept\n\t\t{\n\t\t\treturn dynamic_cast(ex)!=0 || check_exception_pack(ex, ex_rest...);\n\t\t}\n\t}\n\n\ttemplate ::enumerator... V>\n\tstruct match\n\t{\n\t\tusing e_type = typename leaf_detail::match_traits::e_type;\n\t\tusing match_type = typename leaf_detail::match_traits::match_type;\n\t\tmatch_type const & value;\n\n\t\texplicit match( e_type const & e ):\n\t\t\tvalue(leaf_detail::match_traits::get(e))\n\t\t{\n\t\t}\n\n\t\tbool operator()() const noexcept\n\t\t{\n\t\t\treturn leaf_detail::check_value_pack(value,V...);\n\t\t}\n\t};\n\n\ttemplate \n\tstruct catch_\n\t{\n\t\tstd::exception const & value;\n\n\t\texplicit catch_( std::exception const & ex ):\n\t\t\tvalue(ex)\n\t\t{\n\t\t}\n\n\t\tbool operator()() const noexcept\n\t\t{\n\t\t\treturn leaf_detail::check_exception_pack(&value,static_cast(0)...);\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\tnamespace static_store_internal\n\t\t{\n\t\t\ttemplate \n\t\t\tstruct tuple_for_each\n\t\t\t{\n\t\t\t\tstatic void reset( Tuple & tup ) noexcept\n\t\t\t\t{\n\t\t\t\t\ttuple_for_each::reset(tup);\n\t\t\t\t\tstd::get(tup).reset();\n\t\t\t\t}\n\t\t\t};\n\n\t\t\ttemplate \n\t\t\tstruct tuple_for_each<0, Tuple>\n\t\t\t{\n\t\t\t\tstatic void reset( Tuple & ) noexcept { }\n\t\t\t};\n\n\t\t\t////////////////////////////////////////\n\n\t\t\tclass enable_any\n\t\t\t{\n\t\t\tprotected:\n\n\t\t\t\tenable_any() noexcept\n\t\t\t\t{\n\t\t\t\t\t++tl_unexpected_enabled_counter();\n\t\t\t\t}\n\n\t\t\t\t~enable_any() noexcept\n\t\t\t\t{\n\t\t\t\t\t--tl_unexpected_enabled_counter();\n\t\t\t\t}\n\t\t\t};\n\n\t\t\ttemplate \n\t\t\tclass static_store_slot:\n\t\t\t\tpublic slot\n\t\t\t{\n\t\t\tpublic:\n\t\t\t\toptional extract_optional( int err_id ) && noexcept\n\t\t\t\t{\n\t\t\t\t\tassert(err_id);\n\t\t\t\t\tslot const & s = *this;\n\t\t\t\t\tif( s.has_value() && s.value().err_id==err_id )\n\t\t\t\t\t\treturn optional(std::move(*this).value().e);\n\t\t\t\t\telse\n\t\t\t\t\t\treturn optional();\n\t\t\t\t}\n\t\t\t};\n\n\t\t\ttemplate <>\n\t\t\tclass static_store_slot:\n\t\t\t\tpublic slot,\n\t\t\t\tenable_any\n\t\t\t{\n\t\t\t};\n\n\t\t\ttemplate <>\n\t\t\tclass static_store_slot()...)) operator()( A ... a ) const\n\t\t\t{\n\t\t\t\tstatic_store ss;\n\t\t\t\tss.set_reset(true);\n\t\t\t\tif( auto r = f_(std::forward (a)...) )\n\t\t\t\t\treturn r;\n\t\t\t\telse\n\t\t\t\t\treturn decltype(r)( std::make_shared>(r.error().value(),std::move(ss)) );\n\t\t\t}\n\t\t};\n\t}\n\n\ttemplate \n\tleaf_detail::result_trap::mp_args,E...> capture_result( F && f ) noexcept\n\t{\n\t\tusing namespace leaf_detail;\n\t\treturn result_trap::mp_args,E...>(std::move(f));\n\t}\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/capture_result.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/common.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/common.hpp\"\n#ifndef EBA7EF10B6F311E8AAD493990D39171A\n#define EBA7EF10B6F311E8AAD493990D39171A\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/detail/print.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/print.hpp\"\n#ifndef BOOST_LEAF_3BAB50A2B87E11E89EEB30600C39171A\n#define BOOST_LEAF_3BAB50A2B87E11E89EEB30600C39171A\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tinline char const * check_prefix( char const * t, char const (&prefix)[N] )\n\t\t{\n\t\t\treturn std::strncmp(t,prefix,sizeof(prefix)-1)==0 ? t+sizeof(prefix)-1 : t;\n\t\t}\n\t}\n\n\ttemplate \n\tchar const * type() noexcept\n\t{\n\tchar const * t =\n#ifdef __FUNCSIG__\n\t\t__FUNCSIG__;\n#else\n\t\t__PRETTY_FUNCTION__;\n#endif\n#if defined(__clang__)\n\t\tassert(leaf_detail::check_prefix(t,\"const char *boost::leaf::type() \")==t+32);\n\t\treturn t+32;\n#elif defined(__GNUC__)\n\t\tassert(leaf_detail::check_prefix(t,\"const char* boost::leaf::type() \")==t+32);\n\t\treturn t+32;\n#else\n\t\tchar const * clang_style = leaf_detail::check_prefix(t,\"const char *boost::leaf::type() \");\n\t\tif( clang_style!=t )\n\t\t\treturn clang_style;\n\t\tchar const * gcc_style = leaf_detail::check_prefix(t,\"const char* boost::leaf::type() \");\n\t\tif( gcc_style!=t )\n\t\t\treturn gcc_style;\n#endif\n\t\treturn t;\n\t}\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct is_printable: std::false_type\n\t\t{\n\t\t};\n\n\t\ttemplate \n\t\tstruct is_printable()<(), void())>: std::true_type\n\t\t{\n\t\t};\n\n\t\t////////////////////////////////////////\n\n\t\ttemplate \n\t\tstruct has_printable_member_value: std::false_type\n\t\t{\n\t\t};\n\n\t\ttemplate \n\t\tstruct has_printable_member_value()<().value, void())>: std::true_type\n\t\t{\n\t\t};\n\n\t\t////////////////////////////////////////\n\n\t\ttemplate ::value, bool ValuePrintable=has_printable_member_value::value>\n\t\tstruct diagnostic;\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & x )\n\t\t\t{\n\t\t\t\tos << x;\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & x )\n\t\t\t{\n\t\t\t\tos << type() << \": \" << x.value;\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & )\n\t\t\t{\n\t\t\t\tos << type() << \": N/A\";\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, std::exception_ptr const & )\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/print.hpp\n//<<<<<<<<\n#include \n#include \n#include \n#ifdef _WIN32\n#include \n#include \n#ifdef min\n#undef min\n#endif\n#ifdef max\n#undef max\n#endif\n#endif\n\nnamespace boost { namespace leaf {\n\n\tstruct e_api_function { char const * value; };\n\n\tstruct e_file_name { std::string value; };\n\n\tstruct e_errno\n\t{\n\t\tint value;\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, e_errno const & err )\n\t\t{\n\t\t\treturn os << type() << \": \" << err.value << \", \\\"\" << std::strerror(err.value) << '\"';\n\t\t}\n\t};\n\n\tstruct e_type_info_name { char const * value; };\n\n\tstruct e_at_line { int value; };\n\n\tnamespace windows\n\t{\n\t\tstruct e_LastError\n\t\t{\n\t\t\tunsigned value;\n\n#ifdef _WIN32\n\t\t\tfriend std::ostream & operator<<( std::ostream & os, e_LastError const & err )\n\t\t\t{\n\t\t\t\tstruct msg_buf\n\t\t\t\t{\n\t\t\t\t\tLPVOID * p;\n\t\t\t\t\tmsg_buf(): p(0) { }\n\t\t\t\t\t~msg_buf() { if(p) LocalFree(p); }\n\t\t\t\t};\n\t\t\t\tmsg_buf mb;\n\t\t\t\tif( FormatMessageA(\n\t\t\t\t\tFORMAT_MESSAGE_ALLOCATE_BUFFER|FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_IGNORE_INSERTS,\n\t\t\t\t\t0,\n\t\t\t\t\terr.value,\n\t\t\t\t\tMAKELANGID(LANG_NEUTRAL,SUBLANG_DEFAULT),\n\t\t\t\t\t(LPSTR)&mb.p,\n\t\t\t\t\t0,\n\t\t\t\t\t0) )\n\t\t\t\t{\n\t\t\t\t\tassert(mb.p!=0);\n\t\t\t\t\tchar * z = std::strchr((LPSTR)mb.p,0);\n\t\t\t\t\tif( z[-1] == '\\n' )\n\t\t\t\t\t\t*--z = 0;\n\t\t\t\t\tif( z[-1] == '\\r' )\n\t\t\t\t\t\t*--z = 0;\n\t\t\t\t\treturn os << type() << \": \" << err.value << \", \\\"\" << (LPCSTR)mb.p << '\"';\n\t\t\t\t}\n\t\t\t\treturn os;\n\t\t\t}\n#else\n\t\t\t// TODO : Other platforms\n#endif\n\t\t};\n\t}\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/common.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/error.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/error.hpp\"\n#ifndef BOOST_LEAF_BA049396D0D411E8B45DF7D4A759E189\n#define BOOST_LEAF_BA049396D0D411E8B45DF7D4A759E189\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/detail/teleport.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/teleport.hpp\"\n#ifndef BOOST_LEAF_B449A5821DA411E99B9A012588D1CC0E\n#define BOOST_LEAF_B449A5821DA411E99B9A012588D1CC0E\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/detail/optional.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/optional.hpp\"\n#ifndef BOOST_LEAF_47258FCCB6B411E8A1F35AA00C39171A\n#define BOOST_LEAF_47258FCCB6B411E8A1F35AA00C39171A\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tclass optional\n\t\t{\n\t\t\tunion { T value_; };\n\t\t\tbool has_value_;\n\n\t\tpublic:\n\n\t\t\ttypedef T value_type;\n\t\t\toptional() noexcept:\n\t\t\t\thas_value_(false)\n\t\t\t{\n\t\t\t}\n\n\t\t\toptional( optional const & x ):\n\t\t\t\thas_value_(x.has_value_)\n\t\t\t{\n\t\t\t\tif( x.has_value_ )\n\t\t\t\t\t(void) new (&value_) T( x.value_ );\n\t\t\t}\n\n\t\t\toptional( optional && x ) noexcept:\n\t\t\t\thas_value_(x.has_value_)\n\t\t\t{\n\t\t\t\tif( x.has_value_ )\n\t\t\t\t{\n\t\t\t\t\t(void) new (&value_) T( std::move(x.value_) );\n\t\t\t\t\tx.value_.~T();\n\t\t\t\t\tx.has_value_ = false;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\toptional( T const & v ):\n\t\t\t\tvalue_(v),\n\t\t\t\thas_value_(true)\n\t\t\t{\n\t\t\t}\n\n\t\t\toptional( T && v ) noexcept:\n\t\t\t\tvalue_(std::move(v)),\n\t\t\t\thas_value_(true)\n\t\t\t{\n\t\t\t}\n\n\t\t\toptional & operator=( optional const & x )\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\tif( x.has_value() )\n\t\t\t\t\tput(x.value());\n\t\t\t\treturn *this;\n\t\t\t}\n\n\t\t\toptional & operator=( optional && x ) noexcept\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\tif( x.has_value() )\n\t\t\t\t\tput(std::move(x).value());\n\t\t\t\treturn *this;\n\t\t\t}\n\n\t\t\t~optional() noexcept\n\t\t\t{\n\t\t\t\treset();\n\t\t\t}\n\n\t\t\tvoid reset() noexcept\n\t\t\t{\n\t\t\t\tif( has_value() )\n\t\t\t\t{\n\t\t\t\t\tvalue_.~T();\n\t\t\t\t\thas_value_=false;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\ttemplate \n\t\t\tT & emplace( A && ... a )\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(std::forward (a)...);\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & put( T const & v )\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(v);\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & put( T && v ) noexcept\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(std::move(v));\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT const * has_value() const noexcept\n\t\t\t{\n\t\t\t\treturn has_value_ ? &value_ : 0;\n\t\t\t}\n\n\t\t\tT * has_value() noexcept\n\t\t\t{\n\t\t\t\treturn has_value_ ? &value_ : 0;\n\t\t\t}\n\n\t\t\tT const & value() const & noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & value() & noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT const && value() const && noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT value() && noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\tT tmp(std::move(value_));\n\t\t\t\treset();\n\t\t\t\treturn tmp;\n\t\t\t}\n\t\t};\n\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/optional.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/detail/print.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/print.hpp\"\n#ifndef BOOST_LEAF_3BAB50A2B87E11E89EEB30600C39171A\n#define BOOST_LEAF_3BAB50A2B87E11E89EEB30600C39171A\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tinline char const * check_prefix( char const * t, char const (&prefix)[N] )\n\t\t{\n\t\t\treturn std::strncmp(t,prefix,sizeof(prefix)-1)==0 ? t+sizeof(prefix)-1 : t;\n\t\t}\n\t}\n\n\ttemplate \n\tchar const * type() noexcept\n\t{\n\tchar const * t =\n#ifdef __FUNCSIG__\n\t\t__FUNCSIG__;\n#else\n\t\t__PRETTY_FUNCTION__;\n#endif\n#if defined(__clang__)\n\t\tassert(leaf_detail::check_prefix(t,\"const char *boost::leaf::type() \")==t+32);\n\t\treturn t+32;\n#elif defined(__GNUC__)\n\t\tassert(leaf_detail::check_prefix(t,\"const char* boost::leaf::type() \")==t+32);\n\t\treturn t+32;\n#else\n\t\tchar const * clang_style = leaf_detail::check_prefix(t,\"const char *boost::leaf::type() \");\n\t\tif( clang_style!=t )\n\t\t\treturn clang_style;\n\t\tchar const * gcc_style = leaf_detail::check_prefix(t,\"const char* boost::leaf::type() \");\n\t\tif( gcc_style!=t )\n\t\t\treturn gcc_style;\n#endif\n\t\treturn t;\n\t}\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct is_printable: std::false_type\n\t\t{\n\t\t};\n\n\t\ttemplate \n\t\tstruct is_printable()<(), void())>: std::true_type\n\t\t{\n\t\t};\n\n\t\t////////////////////////////////////////\n\n\t\ttemplate \n\t\tstruct has_printable_member_value: std::false_type\n\t\t{\n\t\t};\n\n\t\ttemplate \n\t\tstruct has_printable_member_value()<().value, void())>: std::true_type\n\t\t{\n\t\t};\n\n\t\t////////////////////////////////////////\n\n\t\ttemplate ::value, bool ValuePrintable=has_printable_member_value::value>\n\t\tstruct diagnostic;\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & x )\n\t\t\t{\n\t\t\t\tos << x;\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & x )\n\t\t\t{\n\t\t\t\tos << type() << \": \" << x.value;\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & )\n\t\t\t{\n\t\t\t\tos << type() << \": N/A\";\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, std::exception_ptr const & )\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/print.hpp\n//<<<<<<<<\n#include \n#include \n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\tclass id_factory\n\t\t{\n\t\t\tid_factory( id_factory const & ) = delete;\n\t\t\tid_factory & operator=( id_factory const & ) = delete;\n\n\t\t\tstatic int new_err_id() noexcept\n\t\t\t{\n\t\t\t\tstatic std::atomic c;\n\t\t\t\tif( unsigned id = ++c )\n\t\t\t\t\treturn int(id);\n\t\t\t\telse\n\t\t\t\t\treturn int(++c);\n\t\t\t}\n\n\t\t\tint next_id_;\n\t\t\tint last_id_;\n\n\t\t\tid_factory() noexcept:\n\t\t\t\tnext_id_(new_err_id()),\n\t\t\t\tlast_id_(next_id_-1)\n\t\t\t{\n\t\t\t}\n\n\t\tpublic:\n\n\t\t\tstatic id_factory & tl_instance() noexcept\n\t\t\t{\n\t\t\t\tstatic thread_local id_factory s;\n\t\t\t\treturn s;\n\t\t\t}\n\n\t\t\tint last_id() noexcept\n\t\t\t{\n\t\t\t\treturn last_id_;\n\t\t\t}\n\n\t\t\tint new_id() noexcept\n\t\t\t{\n\t\t\t\tint id = last_id_ = next_id_;\n\t\t\t\tnext_id_ = new_err_id();\n\t\t\t\treturn id;\n\t\t\t}\n\n\t\t\tint next_id() noexcept\n\t\t\t{\n\t\t\t\treturn next_id_;\n\t\t\t}\n\t\t};\n\n\t\tinline int last_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().last_id();\n\t\t}\n\n\t\tinline int new_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().new_id();\n\t\t}\n\n\t\tinline int next_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().next_id();\n\t\t}\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\tclass slot_base\n\t\t{\n\t\t\tslot_base( slot_base const & ) = delete;\n\t\t\tslot_base & operator=( slot_base const & ) = delete;\n\n\t\t\tvirtual bool slot_print( std::ostream &, int err_id ) const = 0;\n\n\t\tpublic:\n\n\t\t\tstatic void print( std::ostream & os, int err_id )\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t\tfor( slot_base const * p = first(); p; p=p->next_ )\n\t\t\t\t\tif( p->slot_print(os,err_id) )\n\t\t\t\t\t\tos << std::endl;\n\t\t\t}\n\n\t\tprotected:\n\n\t\t\tstatic slot_base const * & first() noexcept\n\t\t\t{\n\t\t\t\tstatic thread_local slot_base const * p = 0;\n\t\t\t\treturn p;\n\t\t\t}\n\n\t\t\tslot_base const * const next_;\n\n\t\t\tslot_base() noexcept:\n\t\t\t\tnext_(first())\n\t\t\t{\n\t\t\t\tfirst() = this;\n\t\t\t}\n\n\t\t\t~slot_base() noexcept\n\t\t\t{\n\t\t\t\tslot_base const * & p = first();\n\t\t\t\tassert(p==this);\n\t\t\t\tp = next_;\n\t\t\t}\n\t\t};\n\t}\n\n\t////////////////////////////////////////\n\n\tclass error_id;\n\tnamespace leaf_detail { class captured_exception; }\n\n\tclass error_info\n\t{\n\t\terror_info( error_info const & ) = delete;\n\t\terror_info & operator=( error_info const & ) = delete;\n\n\t\tint const err_id_;\n\t\tstd::exception const * const ex_;\n\t\tleaf_detail::captured_exception const * const cap_;\n\t\tvoid (* const print_ex_)( std::ostream &, std::exception const *, leaf_detail::captured_exception const * );\n\n\tpublic:\n\n\t\texplicit error_info( int err_id ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(0),\n\t\t\tcap_(0),\n\t\t\tprint_ex_(0)\n\t\t{\n\t\t}\n\n\t\terror_info( int err_id, std::exception const * ex, void (*print_ex)(std::ostream &, std::exception const *, leaf_detail::captured_exception const *) ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(ex),\n\t\t\tcap_(0),\n\t\t\tprint_ex_(print_ex)\n\t\t{\n\t\t\tassert(print_ex_!=0);\n\t\t}\n\n\t\terror_info( int err_id, std::exception const * ex, leaf_detail::captured_exception const * cap, void (*print_ex)(std::ostream &, std::exception const *, leaf_detail::captured_exception const *) ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(ex),\n\t\t\tcap_(cap),\n\t\t\tprint_ex_(print_ex)\n\t\t{\n\t\t\tassert(print_ex_!=0);\n\t\t}\n\n\t\tint err_id() const noexcept\n\t\t{\n\t\t\treturn err_id_;\n\t\t}\n\n\t\tbool has_error() const noexcept\n\t\t{\n\t\t\treturn err_id_!=0;\n\t\t}\n\n\t\terror_id error() const noexcept;\n\n\t\tbool has_exception() const noexcept\n\t\t{\n\t\t\treturn print_ex_!=0;\n\t\t}\n\n\t\tstd::exception const * exception() const noexcept\n\t\t{\n\t\t\tassert(has_exception());\n\t\t\treturn ex_;\n\t\t}\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, error_info const & x )\n\t\t{\n\t\t\tos << \"LEAF Error ID: \" << x.err_id_ << std::endl;\n\t\t\tif( x.print_ex_ )\n\t\t\t\tx.print_ex_(os,x.ex_,x.cap_);\n\t\t\tleaf_detail::slot_base::print(os,x.err_id_);\n\t\t\treturn os;\n\t\t}\n\t};\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct has_data_member_value\n\t\t{\n\t\t\tstatic constexpr bool value=false;\n\t\t};\n\n\t\ttemplate \n\t\tstruct has_data_member_value().value, void())>\n\t\t{\n\t\t\tstatic constexpr bool value=std::is_member_object_pointer::value;\n\t\t};\n\n\t\ttemplate \n\t\tstruct is_error_type_default\n\t\t{\n\t\t\tstatic constexpr bool value = has_data_member_value::value || std::is_base_of::value;\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\t}\n\n\ttemplate \n\tstruct is_error_type: leaf_detail::is_error_type_default\n\t{\n\t};\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\tclass monitor_base\n\t\t{\n\t\t\tmonitor_base( monitor_base const & ) = delete;\n\t\t\tmonitor_base & operator=( monitor_base const & ) = delete;\n\n\t\t\tmutable error_info const * ei_;\n\n\t\tprotected:\n\n\t\t\tmonitor_base() noexcept:\n\t\t\t\tei_(0)\n\t\t\t{\n\t\t\t}\n\n\t\t\tmonitor_base( monitor_base && x ) noexcept:\n\t\t\t\tei_(0)\n\t\t\t{\n\t\t\t\tx.ei_ = 0;\n\t\t\t}\n\n\t\t\tvoid set_error_info( error_info const & ei ) const noexcept\n\t\t\t{\n\t\t\t\tei_ = &ei;\n\t\t\t}\n\n\t\t\terror_info const & get_error_info() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn *ei_;\n\t\t\t}\n\n\t\tpublic:\n\n\t\t\tbool has_error() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->has_error();\n\t\t\t}\n\n\t\t\terror_id error() const noexcept;\n\n\t\t\tbool has_exception() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->has_exception();\n\t\t\t}\n\n\t\t\tstd::exception const * exception() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->exception();\n\t\t\t}\n\t\t};\n\t}\n\n\tclass diagnostic_info: leaf_detail::monitor_base\n\t{\n\tpublic:\n\n\t\tchar const * (*first_type)();\n\t\tint count;\n\n\t\texplicit diagnostic_info( char const * (*first_type)() ) noexcept:\n\t\t\tfirst_type(first_type),\n\t\t\tcount(1)\n\t\t{\n\t\t}\n\n\t\tusing monitor_base::set_error_info;\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, diagnostic_info const & x )\n\t\t{\n\t\t\tassert(x.first_type!=0);\n\t\t\tassert(x.count>0);\n\t\t\tos << x.get_error_info() << \"diagnostic_info: Detected \";\n\t\t\tif( x.count==1 )\n\t\t\t\tos << \"1 attempt to communicate an E-object\";\n\t\t\telse\n\t\t\t\tos << x.count << \" attempts to communicate unexpected E-objects, the first one\";\n\t\t\treturn os << \" of type \" << x.first_type() << std::endl;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, diagnostic_info const & ) noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t}\n\n\tclass verbose_diagnostic_info: leaf_detail::monitor_base\n\t{\n\t\tstd::string s_;\n\t\tstd::set already_;\n\n\tpublic:\n\n\t\tverbose_diagnostic_info() noexcept\n\t\t{\n\t\t}\n\n\t\tusing monitor_base::set_error_info;\n\n\t\tvoid reset() noexcept\n\t\t{\n\t\t\ts_.clear();\n\t\t\talready_.clear();\n\t\t}\n\n\t\ttemplate \n\t\tvoid add( E const & e )\n\t\t{\n\t\t\tstd::stringstream s;\n\t\t\tif( leaf_detail::diagnostic::print(s,e) && already_.insert(&type).second )\n\t\t\t{\n\t\t\t\ts << std::endl;\n\t\t\t\ts_ += s.str();\n\t\t\t}\n\t\t}\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, verbose_diagnostic_info const & x )\n\t\t{\n\t\t\tos <<\n\t\t\t\tx.get_error_info() <<\n\t\t\t\t\"verbose_diagnostic_info:\" << std::endl <<\n\t\t\t\tx.s_;\n\t\t\treturn os;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, verbose_diagnostic_info const & ) noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct id_e_pair\n\t\t{\n\t\t\tint err_id;\n\t\t\tE e;\n\n\t\t\texplicit id_e_pair( int err_id ) noexcept:\n\t\t\t\terr_id(err_id)\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\n\t\t\tid_e_pair( int err_id, E const & e ):\n\t\t\t\terr_id(err_id),\n\t\t\t\te(e)\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\n\t\t\tid_e_pair( int err_id, E && e ) noexcept:\n\t\t\t\terr_id(err_id),\n\t\t\t\te(std::forward(e))\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\t\t};\n\n\t\tinline int & tl_unexpected_enabled_counter() noexcept\n\t\t{\n\t\t\tstatic thread_local int c;\n\t\t\treturn c;\n\t\t}\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tclass slot:\n\t\t\tslot_base,\n\t\t\toptional>\n\t\t{\n\t\t\tslot( slot const & ) = delete;\n\t\t\tslot & operator=( slot const & ) = delete;\n\t\t\ttypedef optional> base;\n\t\t\tslot * prev_;\n\t\t\tstatic_assert(is_error_type::value,\"Not an error type\");\n\n\t\t\tbool slot_print( std::ostream &, int err_id ) const;\n\n\t\tprotected:\n\n\t\t\tslot() noexcept;\n\t\t\t~slot() noexcept;\n\n\t\tpublic:\n\n\t\t\tusing base::put;\n\t\t\tusing base::has_value;\n\t\t\tusing base::value;\n\t\t\tusing base::reset;\n\t\t\tusing base::emplace;\n\t\t};\n\n\t\ttemplate \n\t\tslot * & tl_slot_ptr() noexcept\n\t\t{\n\t\t\tstatic thread_local slot * s;\n\t\t\treturn s;\n\t\t}\n\n\t\ttemplate \n\t\tvoid put_unexpected( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tif( slot * p = tl_slot_ptr() )\n\t\t\t{\n\t\t\t\tif( p->has_value() )\n\t\t\t\t{\n\t\t\t\t\tauto & p_id_e = p->value();\n\t\t\t\t\tif( p_id_e.err_id==id_e.err_id )\n\t\t\t\t\t{\n\t\t\t\t\t\t++p_id_e.e.count;\n\t\t\t\t\t\treturn;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\t(void) p->put( id_e_pair(id_e.err_id,diagnostic_info(&type)) );\n\t\t\t}\n\t\t}\n\n\t\ttemplate \n\t\tvoid put_verbose_diagnostic_info( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tif( slot * sl = tl_slot_ptr() )\n\t\t\t{\n\t\t\t\tif( auto * pv = sl->has_value() )\n\t\t\t\t{\n\t\t\t\t\tif( pv->err_id!=id_e.err_id )\n\t\t\t\t\t{\n\t\t\t\t\t\tpv->err_id = id_e.err_id;\n\t\t\t\t\t\tpv->e.reset();\n\t\t\t\t\t}\n\t\t\t\t\tpv->e.add(id_e.e);\n\t\t\t\t}\n\t\t\t\telse\n\t\t\t\t\tsl->emplace(id_e.err_id).e.add(id_e.e);\n\t\t\t}\n\t\t}\n\n\t\ttemplate \n\t\tvoid no_expect_slot( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tput_unexpected(id_e);\n\t\t\tput_verbose_diagnostic_info(id_e);\n\t\t}\n\n\t\ttemplate \n\t\tint put_slot( int err_id, E && e ) noexcept\n\t\t{\n\t\t\tusing T = typename std::remove_cv::type>::type;\n\t\t\tassert(err_id);\n\t\t\tif( slot * p = tl_slot_ptr() )\n\t\t\t\t(void) p->put( id_e_pair(err_id,std::forward(e)) );\n\t\t\telse\n\t\t\t{\n\t\t\t\tint c = tl_unexpected_enabled_counter();\n\t\t\t\tassert(c>=0);\n\t\t\t\tif( c )\n\t\t\t\t\tno_expect_slot( id_e_pair(err_id,std::forward(e)) );\n\t\t\t}\n\t\t\treturn 0;\n\t\t}\n\n\t\ttemplate \n\t\tslot::slot() noexcept\n\t\t{\n\t\t\tslot * & p = tl_slot_ptr();\n\t\t\tprev_ = p;\n\t\t\tp = this;\n\t\t}\n\n\t\ttemplate \n\t\tslot::~slot() noexcept\n\t\t{\n\t\t\tif( prev_ )\n\t\t\t{\n\t\t\t\toptional> & p = *prev_;\n\t\t\t\tp = std::move(*this);\n\t\t\t}\n\t\t\telse\n\t\t\t{\n\t\t\t\tint c = tl_unexpected_enabled_counter();\n\t\t\t\tassert(c>=0);\n\t\t\t\tif( c && has_value() )\n\t\t\t\t\tno_expect_slot(value());\n\t\t\t}\n\t\t\ttl_slot_ptr() = prev_;\n\t\t}\n\n\t\ttemplate \n\t\tbool slot::slot_print( std::ostream & os, int err_id ) const\n\t\t{\n\t\t\tassert(err_id);\n\t\t\tif( tl_slot_ptr()==this )\n\t\t\t\tif( id_e_pair const * id_e = has_value() )\n\t\t\t\t\tif( id_e->err_id==err_id )\n\t\t\t\t\t\treturn diagnostice)>::print(os,id_e->e);\n\t\t\treturn false;\n\t\t}\n\n\t\tenum class result_variant\n\t\t{\n\t\t\tvalue,\n\t\t\terr_id,\n\t\t\tcap\n\t\t};\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/teleport.hpp\n//<<<<<<<<\n#include \n\n#define LEAF_ERROR(...) ::boost::leaf::leaf_detail::new_error_at(__FILE__,__LINE__,__FUNCTION__,__VA_ARGS__)\n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\tclass error_category: public std::error_category\n\t\t{\n\t\t\tbool equivalent( int, std::error_condition const & ) const noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\tbool equivalent( std::error_code const &, int ) const noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\tchar const * name() const noexcept\n\t\t\t{\n\t\t\t\treturn \"LEAF error, use with leaf::handle_some or leaf::handle_all.\";\n\t\t\t}\n\n\t\t\tstd::string message( int condition ) const\n\t\t\t{\n\t\t\t\treturn name();\n\t\t\t}\n\t\t};\n\n\t\tinline error_category const & get_error_category() noexcept\n\t\t{\n\t\t\tstatic error_category cat;\n\t\t\treturn cat;\n\t\t}\n\t}\n\n\tinline bool is_error_id( std::error_code const & ec )\n\t{\n\t\treturn &ec.category() == &leaf_detail::get_error_category();\n\t}\n\n\t////////////////////////////////////////\n\n\tstruct e_original_ec { std::error_code value; };\n\n\tclass error_id: public std::error_code\n\t{\n\t\ttemplate \n\t\tstatic std::error_code import( ErrorCode && ec ) noexcept\n\t\t{\n\t\t\tstd::error_category const & cat = leaf_detail::get_error_category();\n\t\t\tif( ec && &ec.category()!=&cat )\n\t\t\t{\n\t\t\t\tint err_id = leaf_detail::new_id();\n\t\t\t\tleaf_detail::put_slot(err_id, e_original_ec{ec});\n\t\t\t\treturn std::error_code(err_id, cat);\n\t\t\t}\n\t\t\telse\n\t\t\t\treturn ec;\n\t\t}\n\n\tpublic:\n\n\t\terror_id() noexcept = default;\n\n\t\ttemplate \n\t\terror_id( std::error_code const & ec, E && ... e ) noexcept:\n\t\t\terror_code(import(ec))\n\t\t{\n\t\t\t(void) propagate(std::forward(e)...);\n\t\t}\n\n\t\ttemplate \n\t\terror_id( std::error_code && ec, E && ... e ) noexcept:\n\t\t\terror_code(import(std::move(ec)))\n\t\t{\n\t\t\t(void) propagate(std::forward(e)...);\n\t\t}\n\n\t\terror_id propagate() const noexcept\n\t\t{\n\t\t\tassert(is_error_id(*this));\n\t\t\treturn *this;\n\t\t}\n\n\t\ttemplate \n\t\terror_id propagate( E && ... e ) const noexcept\n\t\t{\n\t\t\tassert(is_error_id(*this));\n\t\t\tauto _ = { leaf_detail::put_slot(value(), std::forward(e))... };\n\t\t\t(void) _;\n\t\t\treturn *this;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\tinline error_id make_error( int err_id )\n\t\t{\n\t\t\tassert(err_id);\n\t\t\treturn error_id(std::error_code(err_id, get_error_category()));\n\t\t}\n\t}\n\n\ttemplate \n\terror_id new_error( E && ... e ) noexcept\n\t{\n\t\treturn leaf_detail::make_error(leaf_detail::new_id()).propagate(std::forward(e)...);\n\t}\n\n\tinline error_id next_error() noexcept\n\t{\n\t\treturn leaf_detail::make_error(leaf_detail::next_id());\n\t}\n\n\tinline error_id error_info::error() const noexcept\n\t{\n\t\tassert(has_error());\n\t\treturn leaf_detail::make_error(err_id_);\n\t}\n\n\tinline error_id leaf_detail::monitor_base::error() const noexcept\n\t{\n\t\tassert(ei_!=0);\n\t\treturn ei_->error();\n\t}\n\n\t////////////////////////////////////////\n\n\tstruct e_source_location\n\t{\n\t\tchar const * const file;\n\t\tint const line;\n\t\tchar const * const function;\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, e_source_location const & x )\n\t\t{\n\t\t\treturn os << leaf::type() << \": \" << x.file << '(' << x.line << \") in function \" << x.function;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <> struct is_error_type_default: std::true_type { };\n\n\t\ttemplate \n\t\terror_id new_error_at( char const * file, int line, char const * function, E && ... e ) noexcept\n\t\t{\n\t\t\tassert(file&&*file);\n\t\t\tassert(line>0);\n\t\t\tassert(function&&*function);\n\t\t\te_source_location sl { file, line, function }; // Temp object MSVC workaround\n\t\t\treturn new_error( std::move(sl), std::forward(e)... );\n\t\t}\n\t}\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/error.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/exception_to_result.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/exception_to_result.hpp\"\n#ifndef BOOST_LEAF_017BF91412EB11E9926CDCED8B7F4AFC\n#define BOOST_LEAF_017BF91412EB11E9926CDCED8B7F4AFC\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/throw.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/throw.hpp\"\n#ifndef BOOST_LEAF_75F38740D98D11E881DDB244C82C3C47\n#define BOOST_LEAF_75F38740D98D11E881DDB244C82C3C47\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/error.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/error.hpp\"\n#ifndef BOOST_LEAF_BA049396D0D411E8B45DF7D4A759E189\n#define BOOST_LEAF_BA049396D0D411E8B45DF7D4A759E189\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/detail/teleport.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/teleport.hpp\"\n#ifndef BOOST_LEAF_B449A5821DA411E99B9A012588D1CC0E\n#define BOOST_LEAF_B449A5821DA411E99B9A012588D1CC0E\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/detail/optional.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/optional.hpp\"\n#ifndef BOOST_LEAF_47258FCCB6B411E8A1F35AA00C39171A\n#define BOOST_LEAF_47258FCCB6B411E8A1F35AA00C39171A\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tclass optional\n\t\t{\n\t\t\tunion { T value_; };\n\t\t\tbool has_value_;\n\n\t\tpublic:\n\n\t\t\ttypedef T value_type;\n\t\t\toptional() noexcept:\n\t\t\t\thas_value_(false)\n\t\t\t{\n\t\t\t}\n\n\t\t\toptional( optional const & x ):\n\t\t\t\thas_value_(x.has_value_)\n\t\t\t{\n\t\t\t\tif( x.has_value_ )\n\t\t\t\t\t(void) new (&value_) T( x.value_ );\n\t\t\t}\n\n\t\t\toptional( optional && x ) noexcept:\n\t\t\t\thas_value_(x.has_value_)\n\t\t\t{\n\t\t\t\tif( x.has_value_ )\n\t\t\t\t{\n\t\t\t\t\t(void) new (&value_) T( std::move(x.value_) );\n\t\t\t\t\tx.value_.~T();\n\t\t\t\t\tx.has_value_ = false;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\toptional( T const & v ):\n\t\t\t\tvalue_(v),\n\t\t\t\thas_value_(true)\n\t\t\t{\n\t\t\t}\n\n\t\t\toptional( T && v ) noexcept:\n\t\t\t\tvalue_(std::move(v)),\n\t\t\t\thas_value_(true)\n\t\t\t{\n\t\t\t}\n\n\t\t\toptional & operator=( optional const & x )\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\tif( x.has_value() )\n\t\t\t\t\tput(x.value());\n\t\t\t\treturn *this;\n\t\t\t}\n\n\t\t\toptional & operator=( optional && x ) noexcept\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\tif( x.has_value() )\n\t\t\t\t\tput(std::move(x).value());\n\t\t\t\treturn *this;\n\t\t\t}\n\n\t\t\t~optional() noexcept\n\t\t\t{\n\t\t\t\treset();\n\t\t\t}\n\n\t\t\tvoid reset() noexcept\n\t\t\t{\n\t\t\t\tif( has_value() )\n\t\t\t\t{\n\t\t\t\t\tvalue_.~T();\n\t\t\t\t\thas_value_=false;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\ttemplate \n\t\t\tT & emplace( A && ... a )\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(std::forward (a)...);\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & put( T const & v )\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(v);\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & put( T && v ) noexcept\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(std::move(v));\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT const * has_value() const noexcept\n\t\t\t{\n\t\t\t\treturn has_value_ ? &value_ : 0;\n\t\t\t}\n\n\t\t\tT * has_value() noexcept\n\t\t\t{\n\t\t\t\treturn has_value_ ? &value_ : 0;\n\t\t\t}\n\n\t\t\tT const & value() const & noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & value() & noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT const && value() const && noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT value() && noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\tT tmp(std::move(value_));\n\t\t\t\treset();\n\t\t\t\treturn tmp;\n\t\t\t}\n\t\t};\n\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/optional.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/detail/print.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/print.hpp\"\n#ifndef BOOST_LEAF_3BAB50A2B87E11E89EEB30600C39171A\n#define BOOST_LEAF_3BAB50A2B87E11E89EEB30600C39171A\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tinline char const * check_prefix( char const * t, char const (&prefix)[N] )\n\t\t{\n\t\t\treturn std::strncmp(t,prefix,sizeof(prefix)-1)==0 ? t+sizeof(prefix)-1 : t;\n\t\t}\n\t}\n\n\ttemplate \n\tchar const * type() noexcept\n\t{\n\tchar const * t =\n#ifdef __FUNCSIG__\n\t\t__FUNCSIG__;\n#else\n\t\t__PRETTY_FUNCTION__;\n#endif\n#if defined(__clang__)\n\t\tassert(leaf_detail::check_prefix(t,\"const char *boost::leaf::type() \")==t+32);\n\t\treturn t+32;\n#elif defined(__GNUC__)\n\t\tassert(leaf_detail::check_prefix(t,\"const char* boost::leaf::type() \")==t+32);\n\t\treturn t+32;\n#else\n\t\tchar const * clang_style = leaf_detail::check_prefix(t,\"const char *boost::leaf::type() \");\n\t\tif( clang_style!=t )\n\t\t\treturn clang_style;\n\t\tchar const * gcc_style = leaf_detail::check_prefix(t,\"const char* boost::leaf::type() \");\n\t\tif( gcc_style!=t )\n\t\t\treturn gcc_style;\n#endif\n\t\treturn t;\n\t}\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct is_printable: std::false_type\n\t\t{\n\t\t};\n\n\t\ttemplate \n\t\tstruct is_printable()<(), void())>: std::true_type\n\t\t{\n\t\t};\n\n\t\t////////////////////////////////////////\n\n\t\ttemplate \n\t\tstruct has_printable_member_value: std::false_type\n\t\t{\n\t\t};\n\n\t\ttemplate \n\t\tstruct has_printable_member_value()<().value, void())>: std::true_type\n\t\t{\n\t\t};\n\n\t\t////////////////////////////////////////\n\n\t\ttemplate ::value, bool ValuePrintable=has_printable_member_value::value>\n\t\tstruct diagnostic;\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & x )\n\t\t\t{\n\t\t\t\tos << x;\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & x )\n\t\t\t{\n\t\t\t\tos << type() << \": \" << x.value;\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & )\n\t\t\t{\n\t\t\t\tos << type() << \": N/A\";\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, std::exception_ptr const & )\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/print.hpp\n//<<<<<<<<\n#include \n#include \n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\tclass id_factory\n\t\t{\n\t\t\tid_factory( id_factory const & ) = delete;\n\t\t\tid_factory & operator=( id_factory const & ) = delete;\n\n\t\t\tstatic int new_err_id() noexcept\n\t\t\t{\n\t\t\t\tstatic std::atomic c;\n\t\t\t\tif( unsigned id = ++c )\n\t\t\t\t\treturn int(id);\n\t\t\t\telse\n\t\t\t\t\treturn int(++c);\n\t\t\t}\n\n\t\t\tint next_id_;\n\t\t\tint last_id_;\n\n\t\t\tid_factory() noexcept:\n\t\t\t\tnext_id_(new_err_id()),\n\t\t\t\tlast_id_(next_id_-1)\n\t\t\t{\n\t\t\t}\n\n\t\tpublic:\n\n\t\t\tstatic id_factory & tl_instance() noexcept\n\t\t\t{\n\t\t\t\tstatic thread_local id_factory s;\n\t\t\t\treturn s;\n\t\t\t}\n\n\t\t\tint last_id() noexcept\n\t\t\t{\n\t\t\t\treturn last_id_;\n\t\t\t}\n\n\t\t\tint new_id() noexcept\n\t\t\t{\n\t\t\t\tint id = last_id_ = next_id_;\n\t\t\t\tnext_id_ = new_err_id();\n\t\t\t\treturn id;\n\t\t\t}\n\n\t\t\tint next_id() noexcept\n\t\t\t{\n\t\t\t\treturn next_id_;\n\t\t\t}\n\t\t};\n\n\t\tinline int last_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().last_id();\n\t\t}\n\n\t\tinline int new_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().new_id();\n\t\t}\n\n\t\tinline int next_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().next_id();\n\t\t}\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\tclass slot_base\n\t\t{\n\t\t\tslot_base( slot_base const & ) = delete;\n\t\t\tslot_base & operator=( slot_base const & ) = delete;\n\n\t\t\tvirtual bool slot_print( std::ostream &, int err_id ) const = 0;\n\n\t\tpublic:\n\n\t\t\tstatic void print( std::ostream & os, int err_id )\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t\tfor( slot_base const * p = first(); p; p=p->next_ )\n\t\t\t\t\tif( p->slot_print(os,err_id) )\n\t\t\t\t\t\tos << std::endl;\n\t\t\t}\n\n\t\tprotected:\n\n\t\t\tstatic slot_base const * & first() noexcept\n\t\t\t{\n\t\t\t\tstatic thread_local slot_base const * p = 0;\n\t\t\t\treturn p;\n\t\t\t}\n\n\t\t\tslot_base const * const next_;\n\n\t\t\tslot_base() noexcept:\n\t\t\t\tnext_(first())\n\t\t\t{\n\t\t\t\tfirst() = this;\n\t\t\t}\n\n\t\t\t~slot_base() noexcept\n\t\t\t{\n\t\t\t\tslot_base const * & p = first();\n\t\t\t\tassert(p==this);\n\t\t\t\tp = next_;\n\t\t\t}\n\t\t};\n\t}\n\n\t////////////////////////////////////////\n\n\tclass error_id;\n\tnamespace leaf_detail { class captured_exception; }\n\n\tclass error_info\n\t{\n\t\terror_info( error_info const & ) = delete;\n\t\terror_info & operator=( error_info const & ) = delete;\n\n\t\tint const err_id_;\n\t\tstd::exception const * const ex_;\n\t\tleaf_detail::captured_exception const * const cap_;\n\t\tvoid (* const print_ex_)( std::ostream &, std::exception const *, leaf_detail::captured_exception const * );\n\n\tpublic:\n\n\t\texplicit error_info( int err_id ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(0),\n\t\t\tcap_(0),\n\t\t\tprint_ex_(0)\n\t\t{\n\t\t}\n\n\t\terror_info( int err_id, std::exception const * ex, void (*print_ex)(std::ostream &, std::exception const *, leaf_detail::captured_exception const *) ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(ex),\n\t\t\tcap_(0),\n\t\t\tprint_ex_(print_ex)\n\t\t{\n\t\t\tassert(print_ex_!=0);\n\t\t}\n\n\t\terror_info( int err_id, std::exception const * ex, leaf_detail::captured_exception const * cap, void (*print_ex)(std::ostream &, std::exception const *, leaf_detail::captured_exception const *) ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(ex),\n\t\t\tcap_(cap),\n\t\t\tprint_ex_(print_ex)\n\t\t{\n\t\t\tassert(print_ex_!=0);\n\t\t}\n\n\t\tint err_id() const noexcept\n\t\t{\n\t\t\treturn err_id_;\n\t\t}\n\n\t\tbool has_error() const noexcept\n\t\t{\n\t\t\treturn err_id_!=0;\n\t\t}\n\n\t\terror_id error() const noexcept;\n\n\t\tbool has_exception() const noexcept\n\t\t{\n\t\t\treturn print_ex_!=0;\n\t\t}\n\n\t\tstd::exception const * exception() const noexcept\n\t\t{\n\t\t\tassert(has_exception());\n\t\t\treturn ex_;\n\t\t}\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, error_info const & x )\n\t\t{\n\t\t\tos << \"LEAF Error ID: \" << x.err_id_ << std::endl;\n\t\t\tif( x.print_ex_ )\n\t\t\t\tx.print_ex_(os,x.ex_,x.cap_);\n\t\t\tleaf_detail::slot_base::print(os,x.err_id_);\n\t\t\treturn os;\n\t\t}\n\t};\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct has_data_member_value\n\t\t{\n\t\t\tstatic constexpr bool value=false;\n\t\t};\n\n\t\ttemplate \n\t\tstruct has_data_member_value().value, void())>\n\t\t{\n\t\t\tstatic constexpr bool value=std::is_member_object_pointer::value;\n\t\t};\n\n\t\ttemplate \n\t\tstruct is_error_type_default\n\t\t{\n\t\t\tstatic constexpr bool value = has_data_member_value::value || std::is_base_of::value;\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\t}\n\n\ttemplate \n\tstruct is_error_type: leaf_detail::is_error_type_default\n\t{\n\t};\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\tclass monitor_base\n\t\t{\n\t\t\tmonitor_base( monitor_base const & ) = delete;\n\t\t\tmonitor_base & operator=( monitor_base const & ) = delete;\n\n\t\t\tmutable error_info const * ei_;\n\n\t\tprotected:\n\n\t\t\tmonitor_base() noexcept:\n\t\t\t\tei_(0)\n\t\t\t{\n\t\t\t}\n\n\t\t\tmonitor_base( monitor_base && x ) noexcept:\n\t\t\t\tei_(0)\n\t\t\t{\n\t\t\t\tx.ei_ = 0;\n\t\t\t}\n\n\t\t\tvoid set_error_info( error_info const & ei ) const noexcept\n\t\t\t{\n\t\t\t\tei_ = &ei;\n\t\t\t}\n\n\t\t\terror_info const & get_error_info() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn *ei_;\n\t\t\t}\n\n\t\tpublic:\n\n\t\t\tbool has_error() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->has_error();\n\t\t\t}\n\n\t\t\terror_id error() const noexcept;\n\n\t\t\tbool has_exception() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->has_exception();\n\t\t\t}\n\n\t\t\tstd::exception const * exception() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->exception();\n\t\t\t}\n\t\t};\n\t}\n\n\tclass diagnostic_info: leaf_detail::monitor_base\n\t{\n\tpublic:\n\n\t\tchar const * (*first_type)();\n\t\tint count;\n\n\t\texplicit diagnostic_info( char const * (*first_type)() ) noexcept:\n\t\t\tfirst_type(first_type),\n\t\t\tcount(1)\n\t\t{\n\t\t}\n\n\t\tusing monitor_base::set_error_info;\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, diagnostic_info const & x )\n\t\t{\n\t\t\tassert(x.first_type!=0);\n\t\t\tassert(x.count>0);\n\t\t\tos << x.get_error_info() << \"diagnostic_info: Detected \";\n\t\t\tif( x.count==1 )\n\t\t\t\tos << \"1 attempt to communicate an E-object\";\n\t\t\telse\n\t\t\t\tos << x.count << \" attempts to communicate unexpected E-objects, the first one\";\n\t\t\treturn os << \" of type \" << x.first_type() << std::endl;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, diagnostic_info const & ) noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t}\n\n\tclass verbose_diagnostic_info: leaf_detail::monitor_base\n\t{\n\t\tstd::string s_;\n\t\tstd::set already_;\n\n\tpublic:\n\n\t\tverbose_diagnostic_info() noexcept\n\t\t{\n\t\t}\n\n\t\tusing monitor_base::set_error_info;\n\n\t\tvoid reset() noexcept\n\t\t{\n\t\t\ts_.clear();\n\t\t\talready_.clear();\n\t\t}\n\n\t\ttemplate \n\t\tvoid add( E const & e )\n\t\t{\n\t\t\tstd::stringstream s;\n\t\t\tif( leaf_detail::diagnostic::print(s,e) && already_.insert(&type).second )\n\t\t\t{\n\t\t\t\ts << std::endl;\n\t\t\t\ts_ += s.str();\n\t\t\t}\n\t\t}\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, verbose_diagnostic_info const & x )\n\t\t{\n\t\t\tos <<\n\t\t\t\tx.get_error_info() <<\n\t\t\t\t\"verbose_diagnostic_info:\" << std::endl <<\n\t\t\t\tx.s_;\n\t\t\treturn os;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, verbose_diagnostic_info const & ) noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct id_e_pair\n\t\t{\n\t\t\tint err_id;\n\t\t\tE e;\n\n\t\t\texplicit id_e_pair( int err_id ) noexcept:\n\t\t\t\terr_id(err_id)\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\n\t\t\tid_e_pair( int err_id, E const & e ):\n\t\t\t\terr_id(err_id),\n\t\t\t\te(e)\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\n\t\t\tid_e_pair( int err_id, E && e ) noexcept:\n\t\t\t\terr_id(err_id),\n\t\t\t\te(std::forward(e))\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\t\t};\n\n\t\tinline int & tl_unexpected_enabled_counter() noexcept\n\t\t{\n\t\t\tstatic thread_local int c;\n\t\t\treturn c;\n\t\t}\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tclass slot:\n\t\t\tslot_base,\n\t\t\toptional>\n\t\t{\n\t\t\tslot( slot const & ) = delete;\n\t\t\tslot & operator=( slot const & ) = delete;\n\t\t\ttypedef optional> base;\n\t\t\tslot * prev_;\n\t\t\tstatic_assert(is_error_type::value,\"Not an error type\");\n\n\t\t\tbool slot_print( std::ostream &, int err_id ) const;\n\n\t\tprotected:\n\n\t\t\tslot() noexcept;\n\t\t\t~slot() noexcept;\n\n\t\tpublic:\n\n\t\t\tusing base::put;\n\t\t\tusing base::has_value;\n\t\t\tusing base::value;\n\t\t\tusing base::reset;\n\t\t\tusing base::emplace;\n\t\t};\n\n\t\ttemplate \n\t\tslot * & tl_slot_ptr() noexcept\n\t\t{\n\t\t\tstatic thread_local slot * s;\n\t\t\treturn s;\n\t\t}\n\n\t\ttemplate \n\t\tvoid put_unexpected( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tif( slot * p = tl_slot_ptr() )\n\t\t\t{\n\t\t\t\tif( p->has_value() )\n\t\t\t\t{\n\t\t\t\t\tauto & p_id_e = p->value();\n\t\t\t\t\tif( p_id_e.err_id==id_e.err_id )\n\t\t\t\t\t{\n\t\t\t\t\t\t++p_id_e.e.count;\n\t\t\t\t\t\treturn;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\t(void) p->put( id_e_pair(id_e.err_id,diagnostic_info(&type)) );\n\t\t\t}\n\t\t}\n\n\t\ttemplate \n\t\tvoid put_verbose_diagnostic_info( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tif( slot * sl = tl_slot_ptr() )\n\t\t\t{\n\t\t\t\tif( auto * pv = sl->has_value() )\n\t\t\t\t{\n\t\t\t\t\tif( pv->err_id!=id_e.err_id )\n\t\t\t\t\t{\n\t\t\t\t\t\tpv->err_id = id_e.err_id;\n\t\t\t\t\t\tpv->e.reset();\n\t\t\t\t\t}\n\t\t\t\t\tpv->e.add(id_e.e);\n\t\t\t\t}\n\t\t\t\telse\n\t\t\t\t\tsl->emplace(id_e.err_id).e.add(id_e.e);\n\t\t\t}\n\t\t}\n\n\t\ttemplate \n\t\tvoid no_expect_slot( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tput_unexpected(id_e);\n\t\t\tput_verbose_diagnostic_info(id_e);\n\t\t}\n\n\t\ttemplate \n\t\tint put_slot( int err_id, E && e ) noexcept\n\t\t{\n\t\t\tusing T = typename std::remove_cv::type>::type;\n\t\t\tassert(err_id);\n\t\t\tif( slot * p = tl_slot_ptr() )\n\t\t\t\t(void) p->put( id_e_pair(err_id,std::forward(e)) );\n\t\t\telse\n\t\t\t{\n\t\t\t\tint c = tl_unexpected_enabled_counter();\n\t\t\t\tassert(c>=0);\n\t\t\t\tif( c )\n\t\t\t\t\tno_expect_slot( id_e_pair(err_id,std::forward(e)) );\n\t\t\t}\n\t\t\treturn 0;\n\t\t}\n\n\t\ttemplate \n\t\tslot::slot() noexcept\n\t\t{\n\t\t\tslot * & p = tl_slot_ptr();\n\t\t\tprev_ = p;\n\t\t\tp = this;\n\t\t}\n\n\t\ttemplate \n\t\tslot::~slot() noexcept\n\t\t{\n\t\t\tif( prev_ )\n\t\t\t{\n\t\t\t\toptional> & p = *prev_;\n\t\t\t\tp = std::move(*this);\n\t\t\t}\n\t\t\telse\n\t\t\t{\n\t\t\t\tint c = tl_unexpected_enabled_counter();\n\t\t\t\tassert(c>=0);\n\t\t\t\tif( c && has_value() )\n\t\t\t\t\tno_expect_slot(value());\n\t\t\t}\n\t\t\ttl_slot_ptr() = prev_;\n\t\t}\n\n\t\ttemplate \n\t\tbool slot::slot_print( std::ostream & os, int err_id ) const\n\t\t{\n\t\t\tassert(err_id);\n\t\t\tif( tl_slot_ptr()==this )\n\t\t\t\tif( id_e_pair const * id_e = has_value() )\n\t\t\t\t\tif( id_e->err_id==err_id )\n\t\t\t\t\t\treturn diagnostice)>::print(os,id_e->e);\n\t\t\treturn false;\n\t\t}\n\n\t\tenum class result_variant\n\t\t{\n\t\t\tvalue,\n\t\t\terr_id,\n\t\t\tcap\n\t\t};\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/teleport.hpp\n//<<<<<<<<\n#include \n\n#define LEAF_ERROR(...) ::boost::leaf::leaf_detail::new_error_at(__FILE__,__LINE__,__FUNCTION__,__VA_ARGS__)\n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\tclass error_category: public std::error_category\n\t\t{\n\t\t\tbool equivalent( int, std::error_condition const & ) const noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\tbool equivalent( std::error_code const &, int ) const noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\tchar const * name() const noexcept\n\t\t\t{\n\t\t\t\treturn \"LEAF error, use with leaf::handle_some or leaf::handle_all.\";\n\t\t\t}\n\n\t\t\tstd::string message( int condition ) const\n\t\t\t{\n\t\t\t\treturn name();\n\t\t\t}\n\t\t};\n\n\t\tinline error_category const & get_error_category() noexcept\n\t\t{\n\t\t\tstatic error_category cat;\n\t\t\treturn cat;\n\t\t}\n\t}\n\n\tinline bool is_error_id( std::error_code const & ec )\n\t{\n\t\treturn &ec.category() == &leaf_detail::get_error_category();\n\t}\n\n\t////////////////////////////////////////\n\n\tstruct e_original_ec { std::error_code value; };\n\n\tclass error_id: public std::error_code\n\t{\n\t\ttemplate \n\t\tstatic std::error_code import( ErrorCode && ec ) noexcept\n\t\t{\n\t\t\tstd::error_category const & cat = leaf_detail::get_error_category();\n\t\t\tif( ec && &ec.category()!=&cat )\n\t\t\t{\n\t\t\t\tint err_id = leaf_detail::new_id();\n\t\t\t\tleaf_detail::put_slot(err_id, e_original_ec{ec});\n\t\t\t\treturn std::error_code(err_id, cat);\n\t\t\t}\n\t\t\telse\n\t\t\t\treturn ec;\n\t\t}\n\n\tpublic:\n\n\t\terror_id() noexcept = default;\n\n\t\ttemplate \n\t\terror_id( std::error_code const & ec, E && ... e ) noexcept:\n\t\t\terror_code(import(ec))\n\t\t{\n\t\t\t(void) propagate(std::forward(e)...);\n\t\t}\n\n\t\ttemplate \n\t\terror_id( std::error_code && ec, E && ... e ) noexcept:\n\t\t\terror_code(import(std::move(ec)))\n\t\t{\n\t\t\t(void) propagate(std::forward(e)...);\n\t\t}\n\n\t\terror_id propagate() const noexcept\n\t\t{\n\t\t\tassert(is_error_id(*this));\n\t\t\treturn *this;\n\t\t}\n\n\t\ttemplate \n\t\terror_id propagate( E && ... e ) const noexcept\n\t\t{\n\t\t\tassert(is_error_id(*this));\n\t\t\tauto _ = { leaf_detail::put_slot(value(), std::forward(e))... };\n\t\t\t(void) _;\n\t\t\treturn *this;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\tinline error_id make_error( int err_id )\n\t\t{\n\t\t\tassert(err_id);\n\t\t\treturn error_id(std::error_code(err_id, get_error_category()));\n\t\t}\n\t}\n\n\ttemplate \n\terror_id new_error( E && ... e ) noexcept\n\t{\n\t\treturn leaf_detail::make_error(leaf_detail::new_id()).propagate(std::forward(e)...);\n\t}\n\n\tinline error_id next_error() noexcept\n\t{\n\t\treturn leaf_detail::make_error(leaf_detail::next_id());\n\t}\n\n\tinline error_id error_info::error() const noexcept\n\t{\n\t\tassert(has_error());\n\t\treturn leaf_detail::make_error(err_id_);\n\t}\n\n\tinline error_id leaf_detail::monitor_base::error() const noexcept\n\t{\n\t\tassert(ei_!=0);\n\t\treturn ei_->error();\n\t}\n\n\t////////////////////////////////////////\n\n\tstruct e_source_location\n\t{\n\t\tchar const * const file;\n\t\tint const line;\n\t\tchar const * const function;\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, e_source_location const & x )\n\t\t{\n\t\t\treturn os << leaf::type() << \": \" << x.file << '(' << x.line << \") in function \" << x.function;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <> struct is_error_type_default: std::true_type { };\n\n\t\ttemplate \n\t\terror_id new_error_at( char const * file, int line, char const * function, E && ... e ) noexcept\n\t\t{\n\t\t\tassert(file&&*file);\n\t\t\tassert(line>0);\n\t\t\tassert(function&&*function);\n\t\t\te_source_location sl { file, line, function }; // Temp object MSVC workaround\n\t\t\treturn new_error( std::move(sl), std::forward(e)... );\n\t\t}\n\t}\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/error.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/throw_exception.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/throw_exception.hpp\"\n#ifndef BOOST_LEAF_68F2D7C61AA111E9952B34BE67511AEB\n#define BOOST_LEAF_68F2D7C61AA111E9952B34BE67511AEB\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n#include \n\n#if defined(LEAF_NO_EXCEPTIONS) || defined(BOOST_EXCEPTIONS)\n\nnamespace boost\n{\n\t[[noreturn]] void throw_exception( std::exception const & ); // user defined\n}\n\nnamespace boost { namespace leaf {\n\n\ttemplate \n\t[[noreturn]] void throw_exception( T const & e )\n\t{\n\t\t::boost::throw_exception(e);\n\t}\n\n} }\n\n#else\n\nnamespace boost { namespace leaf {\n\n\ttemplate \n\t[[noreturn]] void throw_exception( T const & e )\n\t{\n\t\tthrow e;\n\t}\n\n} }\n\n#endif\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/throw_exception.hpp\n//<<<<<<<<\n#include \n\n#define LEAF_EXCEPTION(...) ::boost::leaf::leaf_detail::exception_at(__FILE__,__LINE__,__FUNCTION__,__VA_ARGS__)\n#define LEAF_THROW(...) ::boost::leaf::throw_exception(LEAF_EXCEPTION(__VA_ARGS__))\n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\tinline void enforce_std_exception( std::exception const & ) noexcept { }\n\n\t\ttemplate \n\t\tclass exception:\n\t\t\tpublic Ex,\n\t\t\tpublic error_id\n\t\t{\n\t\tpublic:\n\n\t\t\texception( exception const & ) = default;\n\t\t\texception( exception && ) = default;\n\n\t\t\ttemplate \n\t\t\texception( Ex && ex, E && ... e ) noexcept:\n\t\t\t\tEx(std::move(ex)),\n\t\t\t\terror_id(new_error(std::forward(e)...))\n\t\t\t{\n\t\t\t\tleaf_detail::enforce_std_exception(*this);\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\texception exception_at( char const * file, int line, char const * function, Ex && ex, E && ... e ) noexcept\n\t\t{\n\t\t\tassert(file&&*file);\n\t\t\tassert(line>0);\n\t\t\tassert(function&&*function);\n\t\t\treturn exception( std::forward(ex), e_source_location{file,line,function}, std::forward(e)... );\n\t\t}\n\t}\n\n\ttemplate \n\tleaf_detail::exception exception( Ex && ex, E && ... e ) noexcept\n\t{\n\t\treturn leaf_detail::exception( std::forward(ex), std::forward(e)... );\n\t}\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/throw.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/result.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/result.hpp\"\n#ifndef BOOST_LEAF_2CD8E6B8CA8D11E8BD3B80D66CE5B91B\n#define BOOST_LEAF_2CD8E6B8CA8D11E8BD3B80D66CE5B91B\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/detail/dynamic_store.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/dynamic_store.hpp\"\n#ifndef BOOST_LEAF_6CCC5F56124B11E9B6C4CB8C8C7F4AFC\n#define BOOST_LEAF_6CCC5F56124B11E9B6C4CB8C8C7F4AFC\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\tclass dynamic_store\n\t\t{\n\t\tprotected:\n\n\t\t\tdynamic_store() noexcept\n\t\t\t{\n\t\t\t}\n\n\t\t\t~dynamic_store() noexcept\n\t\t\t{\n\t\t\t}\n\n\t\tpublic:\n\n\t\t\tvirtual int err_id() const noexcept = 0;\n\t\t\tvirtual int unload() noexcept = 0;\n\t\t\tvirtual int unload( int error_code ) noexcept = 0;\n\t\t};\n\t}\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/dynamic_store.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/throw.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/throw.hpp\"\n#ifndef BOOST_LEAF_75F38740D98D11E881DDB244C82C3C47\n#define BOOST_LEAF_75F38740D98D11E881DDB244C82C3C47\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/error.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/error.hpp\"\n#ifndef BOOST_LEAF_BA049396D0D411E8B45DF7D4A759E189\n#define BOOST_LEAF_BA049396D0D411E8B45DF7D4A759E189\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/detail/teleport.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/teleport.hpp\"\n#ifndef BOOST_LEAF_B449A5821DA411E99B9A012588D1CC0E\n#define BOOST_LEAF_B449A5821DA411E99B9A012588D1CC0E\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/detail/optional.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/optional.hpp\"\n#ifndef BOOST_LEAF_47258FCCB6B411E8A1F35AA00C39171A\n#define BOOST_LEAF_47258FCCB6B411E8A1F35AA00C39171A\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tclass optional\n\t\t{\n\t\t\tunion { T value_; };\n\t\t\tbool has_value_;\n\n\t\tpublic:\n\n\t\t\ttypedef T value_type;\n\t\t\toptional() noexcept:\n\t\t\t\thas_value_(false)\n\t\t\t{\n\t\t\t}\n\n\t\t\toptional( optional const & x ):\n\t\t\t\thas_value_(x.has_value_)\n\t\t\t{\n\t\t\t\tif( x.has_value_ )\n\t\t\t\t\t(void) new (&value_) T( x.value_ );\n\t\t\t}\n\n\t\t\toptional( optional && x ) noexcept:\n\t\t\t\thas_value_(x.has_value_)\n\t\t\t{\n\t\t\t\tif( x.has_value_ )\n\t\t\t\t{\n\t\t\t\t\t(void) new (&value_) T( std::move(x.value_) );\n\t\t\t\t\tx.value_.~T();\n\t\t\t\t\tx.has_value_ = false;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\toptional( T const & v ):\n\t\t\t\tvalue_(v),\n\t\t\t\thas_value_(true)\n\t\t\t{\n\t\t\t}\n\n\t\t\toptional( T && v ) noexcept:\n\t\t\t\tvalue_(std::move(v)),\n\t\t\t\thas_value_(true)\n\t\t\t{\n\t\t\t}\n\n\t\t\toptional & operator=( optional const & x )\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\tif( x.has_value() )\n\t\t\t\t\tput(x.value());\n\t\t\t\treturn *this;\n\t\t\t}\n\n\t\t\toptional & operator=( optional && x ) noexcept\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\tif( x.has_value() )\n\t\t\t\t\tput(std::move(x).value());\n\t\t\t\treturn *this;\n\t\t\t}\n\n\t\t\t~optional() noexcept\n\t\t\t{\n\t\t\t\treset();\n\t\t\t}\n\n\t\t\tvoid reset() noexcept\n\t\t\t{\n\t\t\t\tif( has_value() )\n\t\t\t\t{\n\t\t\t\t\tvalue_.~T();\n\t\t\t\t\thas_value_=false;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\ttemplate \n\t\t\tT & emplace( A && ... a )\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(std::forward (a)...);\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & put( T const & v )\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(v);\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & put( T && v ) noexcept\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(std::move(v));\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT const * has_value() const noexcept\n\t\t\t{\n\t\t\t\treturn has_value_ ? &value_ : 0;\n\t\t\t}\n\n\t\t\tT * has_value() noexcept\n\t\t\t{\n\t\t\t\treturn has_value_ ? &value_ : 0;\n\t\t\t}\n\n\t\t\tT const & value() const & noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & value() & noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT const && value() const && noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT value() && noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\tT tmp(std::move(value_));\n\t\t\t\treset();\n\t\t\t\treturn tmp;\n\t\t\t}\n\t\t};\n\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/optional.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/detail/print.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/print.hpp\"\n#ifndef BOOST_LEAF_3BAB50A2B87E11E89EEB30600C39171A\n#define BOOST_LEAF_3BAB50A2B87E11E89EEB30600C39171A\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tinline char const * check_prefix( char const * t, char const (&prefix)[N] )\n\t\t{\n\t\t\treturn std::strncmp(t,prefix,sizeof(prefix)-1)==0 ? t+sizeof(prefix)-1 : t;\n\t\t}\n\t}\n\n\ttemplate \n\tchar const * type() noexcept\n\t{\n\tchar const * t =\n#ifdef __FUNCSIG__\n\t\t__FUNCSIG__;\n#else\n\t\t__PRETTY_FUNCTION__;\n#endif\n#if defined(__clang__)\n\t\tassert(leaf_detail::check_prefix(t,\"const char *boost::leaf::type() \")==t+32);\n\t\treturn t+32;\n#elif defined(__GNUC__)\n\t\tassert(leaf_detail::check_prefix(t,\"const char* boost::leaf::type() \")==t+32);\n\t\treturn t+32;\n#else\n\t\tchar const * clang_style = leaf_detail::check_prefix(t,\"const char *boost::leaf::type() \");\n\t\tif( clang_style!=t )\n\t\t\treturn clang_style;\n\t\tchar const * gcc_style = leaf_detail::check_prefix(t,\"const char* boost::leaf::type() \");\n\t\tif( gcc_style!=t )\n\t\t\treturn gcc_style;\n#endif\n\t\treturn t;\n\t}\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct is_printable: std::false_type\n\t\t{\n\t\t};\n\n\t\ttemplate \n\t\tstruct is_printable()<(), void())>: std::true_type\n\t\t{\n\t\t};\n\n\t\t////////////////////////////////////////\n\n\t\ttemplate \n\t\tstruct has_printable_member_value: std::false_type\n\t\t{\n\t\t};\n\n\t\ttemplate \n\t\tstruct has_printable_member_value()<().value, void())>: std::true_type\n\t\t{\n\t\t};\n\n\t\t////////////////////////////////////////\n\n\t\ttemplate ::value, bool ValuePrintable=has_printable_member_value::value>\n\t\tstruct diagnostic;\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & x )\n\t\t\t{\n\t\t\t\tos << x;\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & x )\n\t\t\t{\n\t\t\t\tos << type() << \": \" << x.value;\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & )\n\t\t\t{\n\t\t\t\tos << type() << \": N/A\";\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, std::exception_ptr const & )\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/print.hpp\n//<<<<<<<<\n#include \n#include \n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\tclass id_factory\n\t\t{\n\t\t\tid_factory( id_factory const & ) = delete;\n\t\t\tid_factory & operator=( id_factory const & ) = delete;\n\n\t\t\tstatic int new_err_id() noexcept\n\t\t\t{\n\t\t\t\tstatic std::atomic c;\n\t\t\t\tif( unsigned id = ++c )\n\t\t\t\t\treturn int(id);\n\t\t\t\telse\n\t\t\t\t\treturn int(++c);\n\t\t\t}\n\n\t\t\tint next_id_;\n\t\t\tint last_id_;\n\n\t\t\tid_factory() noexcept:\n\t\t\t\tnext_id_(new_err_id()),\n\t\t\t\tlast_id_(next_id_-1)\n\t\t\t{\n\t\t\t}\n\n\t\tpublic:\n\n\t\t\tstatic id_factory & tl_instance() noexcept\n\t\t\t{\n\t\t\t\tstatic thread_local id_factory s;\n\t\t\t\treturn s;\n\t\t\t}\n\n\t\t\tint last_id() noexcept\n\t\t\t{\n\t\t\t\treturn last_id_;\n\t\t\t}\n\n\t\t\tint new_id() noexcept\n\t\t\t{\n\t\t\t\tint id = last_id_ = next_id_;\n\t\t\t\tnext_id_ = new_err_id();\n\t\t\t\treturn id;\n\t\t\t}\n\n\t\t\tint next_id() noexcept\n\t\t\t{\n\t\t\t\treturn next_id_;\n\t\t\t}\n\t\t};\n\n\t\tinline int last_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().last_id();\n\t\t}\n\n\t\tinline int new_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().new_id();\n\t\t}\n\n\t\tinline int next_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().next_id();\n\t\t}\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\tclass slot_base\n\t\t{\n\t\t\tslot_base( slot_base const & ) = delete;\n\t\t\tslot_base & operator=( slot_base const & ) = delete;\n\n\t\t\tvirtual bool slot_print( std::ostream &, int err_id ) const = 0;\n\n\t\tpublic:\n\n\t\t\tstatic void print( std::ostream & os, int err_id )\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t\tfor( slot_base const * p = first(); p; p=p->next_ )\n\t\t\t\t\tif( p->slot_print(os,err_id) )\n\t\t\t\t\t\tos << std::endl;\n\t\t\t}\n\n\t\tprotected:\n\n\t\t\tstatic slot_base const * & first() noexcept\n\t\t\t{\n\t\t\t\tstatic thread_local slot_base const * p = 0;\n\t\t\t\treturn p;\n\t\t\t}\n\n\t\t\tslot_base const * const next_;\n\n\t\t\tslot_base() noexcept:\n\t\t\t\tnext_(first())\n\t\t\t{\n\t\t\t\tfirst() = this;\n\t\t\t}\n\n\t\t\t~slot_base() noexcept\n\t\t\t{\n\t\t\t\tslot_base const * & p = first();\n\t\t\t\tassert(p==this);\n\t\t\t\tp = next_;\n\t\t\t}\n\t\t};\n\t}\n\n\t////////////////////////////////////////\n\n\tclass error_id;\n\tnamespace leaf_detail { class captured_exception; }\n\n\tclass error_info\n\t{\n\t\terror_info( error_info const & ) = delete;\n\t\terror_info & operator=( error_info const & ) = delete;\n\n\t\tint const err_id_;\n\t\tstd::exception const * const ex_;\n\t\tleaf_detail::captured_exception const * const cap_;\n\t\tvoid (* const print_ex_)( std::ostream &, std::exception const *, leaf_detail::captured_exception const * );\n\n\tpublic:\n\n\t\texplicit error_info( int err_id ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(0),\n\t\t\tcap_(0),\n\t\t\tprint_ex_(0)\n\t\t{\n\t\t}\n\n\t\terror_info( int err_id, std::exception const * ex, void (*print_ex)(std::ostream &, std::exception const *, leaf_detail::captured_exception const *) ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(ex),\n\t\t\tcap_(0),\n\t\t\tprint_ex_(print_ex)\n\t\t{\n\t\t\tassert(print_ex_!=0);\n\t\t}\n\n\t\terror_info( int err_id, std::exception const * ex, leaf_detail::captured_exception const * cap, void (*print_ex)(std::ostream &, std::exception const *, leaf_detail::captured_exception const *) ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(ex),\n\t\t\tcap_(cap),\n\t\t\tprint_ex_(print_ex)\n\t\t{\n\t\t\tassert(print_ex_!=0);\n\t\t}\n\n\t\tint err_id() const noexcept\n\t\t{\n\t\t\treturn err_id_;\n\t\t}\n\n\t\tbool has_error() const noexcept\n\t\t{\n\t\t\treturn err_id_!=0;\n\t\t}\n\n\t\terror_id error() const noexcept;\n\n\t\tbool has_exception() const noexcept\n\t\t{\n\t\t\treturn print_ex_!=0;\n\t\t}\n\n\t\tstd::exception const * exception() const noexcept\n\t\t{\n\t\t\tassert(has_exception());\n\t\t\treturn ex_;\n\t\t}\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, error_info const & x )\n\t\t{\n\t\t\tos << \"LEAF Error ID: \" << x.err_id_ << std::endl;\n\t\t\tif( x.print_ex_ )\n\t\t\t\tx.print_ex_(os,x.ex_,x.cap_);\n\t\t\tleaf_detail::slot_base::print(os,x.err_id_);\n\t\t\treturn os;\n\t\t}\n\t};\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct has_data_member_value\n\t\t{\n\t\t\tstatic constexpr bool value=false;\n\t\t};\n\n\t\ttemplate \n\t\tstruct has_data_member_value().value, void())>\n\t\t{\n\t\t\tstatic constexpr bool value=std::is_member_object_pointer::value;\n\t\t};\n\n\t\ttemplate \n\t\tstruct is_error_type_default\n\t\t{\n\t\t\tstatic constexpr bool value = has_data_member_value::value || std::is_base_of::value;\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\t}\n\n\ttemplate \n\tstruct is_error_type: leaf_detail::is_error_type_default\n\t{\n\t};\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\tclass monitor_base\n\t\t{\n\t\t\tmonitor_base( monitor_base const & ) = delete;\n\t\t\tmonitor_base & operator=( monitor_base const & ) = delete;\n\n\t\t\tmutable error_info const * ei_;\n\n\t\tprotected:\n\n\t\t\tmonitor_base() noexcept:\n\t\t\t\tei_(0)\n\t\t\t{\n\t\t\t}\n\n\t\t\tmonitor_base( monitor_base && x ) noexcept:\n\t\t\t\tei_(0)\n\t\t\t{\n\t\t\t\tx.ei_ = 0;\n\t\t\t}\n\n\t\t\tvoid set_error_info( error_info const & ei ) const noexcept\n\t\t\t{\n\t\t\t\tei_ = &ei;\n\t\t\t}\n\n\t\t\terror_info const & get_error_info() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn *ei_;\n\t\t\t}\n\n\t\tpublic:\n\n\t\t\tbool has_error() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->has_error();\n\t\t\t}\n\n\t\t\terror_id error() const noexcept;\n\n\t\t\tbool has_exception() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->has_exception();\n\t\t\t}\n\n\t\t\tstd::exception const * exception() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->exception();\n\t\t\t}\n\t\t};\n\t}\n\n\tclass diagnostic_info: leaf_detail::monitor_base\n\t{\n\tpublic:\n\n\t\tchar const * (*first_type)();\n\t\tint count;\n\n\t\texplicit diagnostic_info( char const * (*first_type)() ) noexcept:\n\t\t\tfirst_type(first_type),\n\t\t\tcount(1)\n\t\t{\n\t\t}\n\n\t\tusing monitor_base::set_error_info;\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, diagnostic_info const & x )\n\t\t{\n\t\t\tassert(x.first_type!=0);\n\t\t\tassert(x.count>0);\n\t\t\tos << x.get_error_info() << \"diagnostic_info: Detected \";\n\t\t\tif( x.count==1 )\n\t\t\t\tos << \"1 attempt to communicate an E-object\";\n\t\t\telse\n\t\t\t\tos << x.count << \" attempts to communicate unexpected E-objects, the first one\";\n\t\t\treturn os << \" of type \" << x.first_type() << std::endl;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, diagnostic_info const & ) noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t}\n\n\tclass verbose_diagnostic_info: leaf_detail::monitor_base\n\t{\n\t\tstd::string s_;\n\t\tstd::set already_;\n\n\tpublic:\n\n\t\tverbose_diagnostic_info() noexcept\n\t\t{\n\t\t}\n\n\t\tusing monitor_base::set_error_info;\n\n\t\tvoid reset() noexcept\n\t\t{\n\t\t\ts_.clear();\n\t\t\talready_.clear();\n\t\t}\n\n\t\ttemplate \n\t\tvoid add( E const & e )\n\t\t{\n\t\t\tstd::stringstream s;\n\t\t\tif( leaf_detail::diagnostic::print(s,e) && already_.insert(&type).second )\n\t\t\t{\n\t\t\t\ts << std::endl;\n\t\t\t\ts_ += s.str();\n\t\t\t}\n\t\t}\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, verbose_diagnostic_info const & x )\n\t\t{\n\t\t\tos <<\n\t\t\t\tx.get_error_info() <<\n\t\t\t\t\"verbose_diagnostic_info:\" << std::endl <<\n\t\t\t\tx.s_;\n\t\t\treturn os;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, verbose_diagnostic_info const & ) noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct id_e_pair\n\t\t{\n\t\t\tint err_id;\n\t\t\tE e;\n\n\t\t\texplicit id_e_pair( int err_id ) noexcept:\n\t\t\t\terr_id(err_id)\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\n\t\t\tid_e_pair( int err_id, E const & e ):\n\t\t\t\terr_id(err_id),\n\t\t\t\te(e)\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\n\t\t\tid_e_pair( int err_id, E && e ) noexcept:\n\t\t\t\terr_id(err_id),\n\t\t\t\te(std::forward(e))\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\t\t};\n\n\t\tinline int & tl_unexpected_enabled_counter() noexcept\n\t\t{\n\t\t\tstatic thread_local int c;\n\t\t\treturn c;\n\t\t}\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tclass slot:\n\t\t\tslot_base,\n\t\t\toptional>\n\t\t{\n\t\t\tslot( slot const & ) = delete;\n\t\t\tslot & operator=( slot const & ) = delete;\n\t\t\ttypedef optional> base;\n\t\t\tslot * prev_;\n\t\t\tstatic_assert(is_error_type::value,\"Not an error type\");\n\n\t\t\tbool slot_print( std::ostream &, int err_id ) const;\n\n\t\tprotected:\n\n\t\t\tslot() noexcept;\n\t\t\t~slot() noexcept;\n\n\t\tpublic:\n\n\t\t\tusing base::put;\n\t\t\tusing base::has_value;\n\t\t\tusing base::value;\n\t\t\tusing base::reset;\n\t\t\tusing base::emplace;\n\t\t};\n\n\t\ttemplate \n\t\tslot * & tl_slot_ptr() noexcept\n\t\t{\n\t\t\tstatic thread_local slot * s;\n\t\t\treturn s;\n\t\t}\n\n\t\ttemplate \n\t\tvoid put_unexpected( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tif( slot * p = tl_slot_ptr() )\n\t\t\t{\n\t\t\t\tif( p->has_value() )\n\t\t\t\t{\n\t\t\t\t\tauto & p_id_e = p->value();\n\t\t\t\t\tif( p_id_e.err_id==id_e.err_id )\n\t\t\t\t\t{\n\t\t\t\t\t\t++p_id_e.e.count;\n\t\t\t\t\t\treturn;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\t(void) p->put( id_e_pair(id_e.err_id,diagnostic_info(&type)) );\n\t\t\t}\n\t\t}\n\n\t\ttemplate \n\t\tvoid put_verbose_diagnostic_info( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tif( slot * sl = tl_slot_ptr() )\n\t\t\t{\n\t\t\t\tif( auto * pv = sl->has_value() )\n\t\t\t\t{\n\t\t\t\t\tif( pv->err_id!=id_e.err_id )\n\t\t\t\t\t{\n\t\t\t\t\t\tpv->err_id = id_e.err_id;\n\t\t\t\t\t\tpv->e.reset();\n\t\t\t\t\t}\n\t\t\t\t\tpv->e.add(id_e.e);\n\t\t\t\t}\n\t\t\t\telse\n\t\t\t\t\tsl->emplace(id_e.err_id).e.add(id_e.e);\n\t\t\t}\n\t\t}\n\n\t\ttemplate \n\t\tvoid no_expect_slot( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tput_unexpected(id_e);\n\t\t\tput_verbose_diagnostic_info(id_e);\n\t\t}\n\n\t\ttemplate \n\t\tint put_slot( int err_id, E && e ) noexcept\n\t\t{\n\t\t\tusing T = typename std::remove_cv::type>::type;\n\t\t\tassert(err_id);\n\t\t\tif( slot * p = tl_slot_ptr() )\n\t\t\t\t(void) p->put( id_e_pair(err_id,std::forward(e)) );\n\t\t\telse\n\t\t\t{\n\t\t\t\tint c = tl_unexpected_enabled_counter();\n\t\t\t\tassert(c>=0);\n\t\t\t\tif( c )\n\t\t\t\t\tno_expect_slot( id_e_pair(err_id,std::forward(e)) );\n\t\t\t}\n\t\t\treturn 0;\n\t\t}\n\n\t\ttemplate \n\t\tslot::slot() noexcept\n\t\t{\n\t\t\tslot * & p = tl_slot_ptr();\n\t\t\tprev_ = p;\n\t\t\tp = this;\n\t\t}\n\n\t\ttemplate \n\t\tslot::~slot() noexcept\n\t\t{\n\t\t\tif( prev_ )\n\t\t\t{\n\t\t\t\toptional> & p = *prev_;\n\t\t\t\tp = std::move(*this);\n\t\t\t}\n\t\t\telse\n\t\t\t{\n\t\t\t\tint c = tl_unexpected_enabled_counter();\n\t\t\t\tassert(c>=0);\n\t\t\t\tif( c && has_value() )\n\t\t\t\t\tno_expect_slot(value());\n\t\t\t}\n\t\t\ttl_slot_ptr() = prev_;\n\t\t}\n\n\t\ttemplate \n\t\tbool slot::slot_print( std::ostream & os, int err_id ) const\n\t\t{\n\t\t\tassert(err_id);\n\t\t\tif( tl_slot_ptr()==this )\n\t\t\t\tif( id_e_pair const * id_e = has_value() )\n\t\t\t\t\tif( id_e->err_id==err_id )\n\t\t\t\t\t\treturn diagnostice)>::print(os,id_e->e);\n\t\t\treturn false;\n\t\t}\n\n\t\tenum class result_variant\n\t\t{\n\t\t\tvalue,\n\t\t\terr_id,\n\t\t\tcap\n\t\t};\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/teleport.hpp\n//<<<<<<<<\n#include \n\n#define LEAF_ERROR(...) ::boost::leaf::leaf_detail::new_error_at(__FILE__,__LINE__,__FUNCTION__,__VA_ARGS__)\n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\tclass error_category: public std::error_category\n\t\t{\n\t\t\tbool equivalent( int, std::error_condition const & ) const noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\tbool equivalent( std::error_code const &, int ) const noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\tchar const * name() const noexcept\n\t\t\t{\n\t\t\t\treturn \"LEAF error, use with leaf::handle_some or leaf::handle_all.\";\n\t\t\t}\n\n\t\t\tstd::string message( int condition ) const\n\t\t\t{\n\t\t\t\treturn name();\n\t\t\t}\n\t\t};\n\n\t\tinline error_category const & get_error_category() noexcept\n\t\t{\n\t\t\tstatic error_category cat;\n\t\t\treturn cat;\n\t\t}\n\t}\n\n\tinline bool is_error_id( std::error_code const & ec )\n\t{\n\t\treturn &ec.category() == &leaf_detail::get_error_category();\n\t}\n\n\t////////////////////////////////////////\n\n\tstruct e_original_ec { std::error_code value; };\n\n\tclass error_id: public std::error_code\n\t{\n\t\ttemplate \n\t\tstatic std::error_code import( ErrorCode && ec ) noexcept\n\t\t{\n\t\t\tstd::error_category const & cat = leaf_detail::get_error_category();\n\t\t\tif( ec && &ec.category()!=&cat )\n\t\t\t{\n\t\t\t\tint err_id = leaf_detail::new_id();\n\t\t\t\tleaf_detail::put_slot(err_id, e_original_ec{ec});\n\t\t\t\treturn std::error_code(err_id, cat);\n\t\t\t}\n\t\t\telse\n\t\t\t\treturn ec;\n\t\t}\n\n\tpublic:\n\n\t\terror_id() noexcept = default;\n\n\t\ttemplate \n\t\terror_id( std::error_code const & ec, E && ... e ) noexcept:\n\t\t\terror_code(import(ec))\n\t\t{\n\t\t\t(void) propagate(std::forward(e)...);\n\t\t}\n\n\t\ttemplate \n\t\terror_id( std::error_code && ec, E && ... e ) noexcept:\n\t\t\terror_code(import(std::move(ec)))\n\t\t{\n\t\t\t(void) propagate(std::forward(e)...);\n\t\t}\n\n\t\terror_id propagate() const noexcept\n\t\t{\n\t\t\tassert(is_error_id(*this));\n\t\t\treturn *this;\n\t\t}\n\n\t\ttemplate \n\t\terror_id propagate( E && ... e ) const noexcept\n\t\t{\n\t\t\tassert(is_error_id(*this));\n\t\t\tauto _ = { leaf_detail::put_slot(value(), std::forward(e))... };\n\t\t\t(void) _;\n\t\t\treturn *this;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\tinline error_id make_error( int err_id )\n\t\t{\n\t\t\tassert(err_id);\n\t\t\treturn error_id(std::error_code(err_id, get_error_category()));\n\t\t}\n\t}\n\n\ttemplate \n\terror_id new_error( E && ... e ) noexcept\n\t{\n\t\treturn leaf_detail::make_error(leaf_detail::new_id()).propagate(std::forward(e)...);\n\t}\n\n\tinline error_id next_error() noexcept\n\t{\n\t\treturn leaf_detail::make_error(leaf_detail::next_id());\n\t}\n\n\tinline error_id error_info::error() const noexcept\n\t{\n\t\tassert(has_error());\n\t\treturn leaf_detail::make_error(err_id_);\n\t}\n\n\tinline error_id leaf_detail::monitor_base::error() const noexcept\n\t{\n\t\tassert(ei_!=0);\n\t\treturn ei_->error();\n\t}\n\n\t////////////////////////////////////////\n\n\tstruct e_source_location\n\t{\n\t\tchar const * const file;\n\t\tint const line;\n\t\tchar const * const function;\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, e_source_location const & x )\n\t\t{\n\t\t\treturn os << leaf::type() << \": \" << x.file << '(' << x.line << \") in function \" << x.function;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <> struct is_error_type_default: std::true_type { };\n\n\t\ttemplate \n\t\terror_id new_error_at( char const * file, int line, char const * function, E && ... e ) noexcept\n\t\t{\n\t\t\tassert(file&&*file);\n\t\t\tassert(line>0);\n\t\t\tassert(function&&*function);\n\t\t\te_source_location sl { file, line, function }; // Temp object MSVC workaround\n\t\t\treturn new_error( std::move(sl), std::forward(e)... );\n\t\t}\n\t}\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/error.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/throw_exception.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/throw_exception.hpp\"\n#ifndef BOOST_LEAF_68F2D7C61AA111E9952B34BE67511AEB\n#define BOOST_LEAF_68F2D7C61AA111E9952B34BE67511AEB\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n#include \n\n#if defined(LEAF_NO_EXCEPTIONS) || defined(BOOST_EXCEPTIONS)\n\nnamespace boost\n{\n\t[[noreturn]] void throw_exception( std::exception const & ); // user defined\n}\n\nnamespace boost { namespace leaf {\n\n\ttemplate \n\t[[noreturn]] void throw_exception( T const & e )\n\t{\n\t\t::boost::throw_exception(e);\n\t}\n\n} }\n\n#else\n\nnamespace boost { namespace leaf {\n\n\ttemplate \n\t[[noreturn]] void throw_exception( T const & e )\n\t{\n\t\tthrow e;\n\t}\n\n} }\n\n#endif\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/throw_exception.hpp\n//<<<<<<<<\n#include \n\n#define LEAF_EXCEPTION(...) ::boost::leaf::leaf_detail::exception_at(__FILE__,__LINE__,__FUNCTION__,__VA_ARGS__)\n#define LEAF_THROW(...) ::boost::leaf::throw_exception(LEAF_EXCEPTION(__VA_ARGS__))\n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\tinline void enforce_std_exception( std::exception const & ) noexcept { }\n\n\t\ttemplate \n\t\tclass exception:\n\t\t\tpublic Ex,\n\t\t\tpublic error_id\n\t\t{\n\t\tpublic:\n\n\t\t\texception( exception const & ) = default;\n\t\t\texception( exception && ) = default;\n\n\t\t\ttemplate \n\t\t\texception( Ex && ex, E && ... e ) noexcept:\n\t\t\t\tEx(std::move(ex)),\n\t\t\t\terror_id(new_error(std::forward(e)...))\n\t\t\t{\n\t\t\t\tleaf_detail::enforce_std_exception(*this);\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\texception exception_at( char const * file, int line, char const * function, Ex && ex, E && ... e ) noexcept\n\t\t{\n\t\t\tassert(file&&*file);\n\t\t\tassert(line>0);\n\t\t\tassert(function&&*function);\n\t\t\treturn exception( std::forward(ex), e_source_location{file,line,function}, std::forward(e)... );\n\t\t}\n\t}\n\n\ttemplate \n\tleaf_detail::exception exception( Ex && ex, E && ... e ) noexcept\n\t{\n\t\treturn leaf_detail::exception( std::forward(ex), std::forward(e)... );\n\t}\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/throw.hpp\n//<<<<<<<<\n#include \n\n#define LEAF_AUTO(v,r) auto _r_##v = r; if( !_r_##v ) return _r_##v.error(); auto & v = *_r_##v\n#define LEAF_CHECK(r) {auto _r = r; if( !_r ) return _r.error();}\n\nnamespace boost { namespace leaf {\n\n\tclass bad_result: public std::exception { };\n\n\t////////////////////////////////////////\n\n\ttemplate \n\tclass result\n\t{\n\t\tusing dynamic_store_ptr = std::shared_ptr;\n\n\t\ttemplate \n\t\tfriend class result;\n\n\t\tunion\n\t\t{\n\t\t\tT value_;\n\t\t\tmutable int err_id_;\n\t\t\tdynamic_store_ptr cap_;\n\t\t};\n\n\t\tmutable leaf_detail::result_variant which_;\n\n\t\tvoid destroy() const noexcept\n\t\t{\n\t\t\tswitch( which_ )\n\t\t\t{\n\t\t\tcase leaf_detail::result_variant::value:\n\t\t\t\tvalue_.~T();\n\t\t\t\tbreak;\n\t\t\tcase leaf_detail::result_variant::err_id:\n\t\t\t\tbreak;\n\t\t\tdefault:\n\t\t\t\tassert(which_==leaf_detail::result_variant::cap);\n\t\t\t\tcap_.~dynamic_store_ptr();\n\t\t\t}\n\t\t\twhich_= (leaf_detail::result_variant)-1;\n\t\t}\n\n\t\ttemplate \n\t\tvoid copy_from( result const & x )\n\t\t{\n\t\t\tswitch( x.which_ )\n\t\t\t{\n\t\t\tcase leaf_detail::result_variant::value:\n\t\t\t\t(void) new(&value_) T(x.value_);\n\t\t\t\tbreak;\n\t\t\tcase leaf_detail::result_variant::err_id:\n\t\t\t\terr_id_ = x.err_id_;\n\t\t\t\tbreak;\n\t\t\tdefault:\n\t\t\t\tassert(x.which_==leaf_detail::result_variant::cap);\n\t\t\t\t(void) new(&cap_) dynamic_store_ptr(x.cap_);\n\t\t\t};\n\t\t\twhich_ = x.which_;\n\t\t}\n\n\t\ttemplate \n\t\tvoid move_from( result && x ) noexcept\n\t\t{\n\t\t\tswitch( x.which_ )\n\t\t\t{\n\t\t\tcase leaf_detail::result_variant:: value:\n\t\t\t\t(void) new(&value_) T(std::move(x.value_));\n\t\t\t\twhich_ = x.which_;\n\t\t\t\tbreak;\n\t\t\tcase leaf_detail::result_variant::err_id:\n\t\t\t\terr_id_ = x.err_id_;\n\t\t\t\twhich_ = x.which_;\n\t\t\t\tbreak;\n\t\t\tdefault:\n\t\t\t\tassert(x.which_==leaf_detail::result_variant::cap);\n\t\t\t\tif( dynamic_store_ptr cap = std::move(x.cap_) )\n\t\t\t\t{\n\t\t\t\t\tx.destroy();\n\t\t\t\t\tx.err_id_ = cap->err_id();\n\t\t\t\t\tx.which_ = leaf_detail::result_variant::err_id;\n\t\t\t\t\t(void) new(&cap_) dynamic_store_ptr(std::move(cap));\n\t\t\t\t}\n\t\t\t\telse\n\t\t\t\t\t(void) new(&cap_) dynamic_store_ptr(std::move(x.cap_));\n\t\t\t\twhich_ = leaf_detail::result_variant::cap;\n\t\t\t};\n\t\t}\n\n\tpublic:\n\n\t\ttypedef T value_type;\n\n\t\t~result() noexcept\n\t\t{\n\t\t\tdestroy();\n\t\t}\n\n\t\tresult( result && x ) noexcept\n\t\t{\n\t\t\tmove_from(std::move(x));\n\t\t}\n\n\t\tresult( result const & x )\n\t\t{\n\t\t\tcopy_from(x);\n\t\t}\n\n\t\ttemplate \n\t\tresult( result && x ) noexcept\n\t\t{\n\t\t\tmove_from(std::move(x));\n\t\t}\n\n\t\ttemplate \n\t\tresult( result const & x )\n\t\t{\n\t\t\tcopy_from(x);\n\t\t}\n\n\t\tresult():\n\t\t\tvalue_(T()),\n\t\t\twhich_(leaf_detail::result_variant::value)\n\t\t{\n\t\t}\n\n\t\tresult( T && v ) noexcept:\n\t\t\tvalue_(std::move(v)),\n\t\t\twhich_(leaf_detail::result_variant::value)\n\t\t{\n\t\t}\n\n\t\tresult( T const & v ):\n\t\t\tvalue_(v),\n\t\t\twhich_(leaf_detail::result_variant::value)\n\t\t{\n\t\t}\n\n\t\tresult( error_id const & err ) noexcept:\n\t\t\terr_id_(err.value()),\n\t\t\twhich_(leaf_detail::result_variant::err_id)\n\t\t{\n\t\t}\n\n\t\tresult( std::shared_ptr && ) noexcept;\n\n\t\tresult & operator=( result && x ) noexcept\n\t\t{\n\t\t\tdestroy();\n\t\t\tmove_from(std::move(x));\n\t\t\treturn *this;\n\t\t}\n\n\t\tresult & operator=( result const & x )\n\t\t{\n\t\t\tdestroy();\n\t\t\tcopy_from(x);\n\t\t\treturn *this;\n\t\t}\n\n\t\ttemplate \n\t\tresult & operator=( result && x ) noexcept\n\t\t{\n\t\t\tdestroy();\n\t\t\tmove_from(std::move(x));\n\t\t\treturn *this;\n\t\t}\n\n\t\ttemplate \n\t\tresult & operator=( result const & x )\n\t\t{\n\t\t\tdestroy();\n\t\t\tcopy_from(x);\n\t\t\treturn *this;\n\t\t}\n\n\t\texplicit operator bool() const noexcept\n\t\t{\n\t\t\treturn which_==leaf_detail::result_variant::value;\n\t\t}\n\n\t\tT const & value() const\n\t\t{\n\t\t\tif( which_==leaf_detail::result_variant::value )\n\t\t\t\treturn value_;\n\t\t\telse\n\t\t\t\tLEAF_THROW(bad_result());\n\t\t}\n\n\t\tT & value()\n\t\t{\n\t\t\tif( which_==leaf_detail::result_variant::value )\n\t\t\t\treturn value_;\n\t\t\telse\n\t\t\t\tLEAF_THROW(bad_result());\n\t\t}\n\n\t\tT const & operator*() const\n\t\t{\n\t\t\treturn value();\n\t\t}\n\n\t\tT & operator*()\n\t\t{\n\t\t\treturn value();\n\t\t}\n\n\t\ttemplate \n\t\terror_id error( E && ... e ) const noexcept\n\t\t{\n\t\t\tswitch( which_ )\n\t\t\t{\n\t\t\tcase leaf_detail::result_variant::value:\n\t\t\t\treturn { };\n\t\t\tcase leaf_detail::result_variant::cap:\n\t\t\t\t{\n\t\t\t\t\tdynamic_store_ptr cap = cap_;\n\t\t\t\t\tdestroy();\n\t\t\t\t\terr_id_ = cap->unload();\n\t\t\t\t\twhich_ = leaf_detail::result_variant::err_id;\n\t\t\t\t}\n\t\t\tdefault:\n\t\t\t\tassert(which_==leaf_detail::result_variant::err_id);\n\t\t\t\treturn leaf_detail::make_error(err_id_);\n\t\t\t}\n\t\t}\n\t};\n\n\t////////////////////////////////////////\n\n\ttemplate <>\n\tclass result:\n\t\tresult\n\t{\n\t\ttypedef result base;\n\n\t\ttemplate \n\t\tfriend class result;\n\n\t\tresult( result && rb ):\n\t\t\tbase(std::move(rb))\n\t\t{\n\t\t}\n\n\tpublic:\n\n\t\ttypedef void value_type;\n\n\t\t~result() noexcept\n\t\t{\n\t\t}\n\n\t\tresult() = default;\n\n\t\tresult( error_id const & err ) noexcept:\n\t\t\tbase(err)\n\t\t{\n\t\t}\n\n\t\tresult( std::shared_ptr && ) noexcept;\n\n\t\tvoid value() const\n\t\t{\n\t\t\t(void) base::value();\n\t\t}\n\n\t\tvoid operator*() const\n\t\t{\n\t\t\treturn value();\n\t\t}\n\n\t\tusing base::operator bool;\n\t\tusing base::error;\n\t};\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/result.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/detail/static_store.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/static_store.hpp\"\n#ifndef BOOST_LEAF_AFBBD676B2FF11E8984C7976AE35F1A2\n#define BOOST_LEAF_AFBBD676B2FF11E8984C7976AE35F1A2\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/detail/teleport.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/teleport.hpp\"\n#ifndef BOOST_LEAF_B449A5821DA411E99B9A012588D1CC0E\n#define BOOST_LEAF_B449A5821DA411E99B9A012588D1CC0E\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/detail/optional.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/optional.hpp\"\n#ifndef BOOST_LEAF_47258FCCB6B411E8A1F35AA00C39171A\n#define BOOST_LEAF_47258FCCB6B411E8A1F35AA00C39171A\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tclass optional\n\t\t{\n\t\t\tunion { T value_; };\n\t\t\tbool has_value_;\n\n\t\tpublic:\n\n\t\t\ttypedef T value_type;\n\t\t\toptional() noexcept:\n\t\t\t\thas_value_(false)\n\t\t\t{\n\t\t\t}\n\n\t\t\toptional( optional const & x ):\n\t\t\t\thas_value_(x.has_value_)\n\t\t\t{\n\t\t\t\tif( x.has_value_ )\n\t\t\t\t\t(void) new (&value_) T( x.value_ );\n\t\t\t}\n\n\t\t\toptional( optional && x ) noexcept:\n\t\t\t\thas_value_(x.has_value_)\n\t\t\t{\n\t\t\t\tif( x.has_value_ )\n\t\t\t\t{\n\t\t\t\t\t(void) new (&value_) T( std::move(x.value_) );\n\t\t\t\t\tx.value_.~T();\n\t\t\t\t\tx.has_value_ = false;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\toptional( T const & v ):\n\t\t\t\tvalue_(v),\n\t\t\t\thas_value_(true)\n\t\t\t{\n\t\t\t}\n\n\t\t\toptional( T && v ) noexcept:\n\t\t\t\tvalue_(std::move(v)),\n\t\t\t\thas_value_(true)\n\t\t\t{\n\t\t\t}\n\n\t\t\toptional & operator=( optional const & x )\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\tif( x.has_value() )\n\t\t\t\t\tput(x.value());\n\t\t\t\treturn *this;\n\t\t\t}\n\n\t\t\toptional & operator=( optional && x ) noexcept\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\tif( x.has_value() )\n\t\t\t\t\tput(std::move(x).value());\n\t\t\t\treturn *this;\n\t\t\t}\n\n\t\t\t~optional() noexcept\n\t\t\t{\n\t\t\t\treset();\n\t\t\t}\n\n\t\t\tvoid reset() noexcept\n\t\t\t{\n\t\t\t\tif( has_value() )\n\t\t\t\t{\n\t\t\t\t\tvalue_.~T();\n\t\t\t\t\thas_value_=false;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\ttemplate \n\t\t\tT & emplace( A && ... a )\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(std::forward(a)...);\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & put( T const & v )\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(v);\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & put( T && v ) noexcept\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(std::move(v));\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT const * has_value() const noexcept\n\t\t\t{\n\t\t\t\treturn has_value_ ? &value_ : 0;\n\t\t\t}\n\n\t\t\tT * has_value() noexcept\n\t\t\t{\n\t\t\t\treturn has_value_ ? &value_ : 0;\n\t\t\t}\n\n\t\t\tT const & value() const & noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & value() & noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT const && value() const && noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT value() && noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\tT tmp(std::move(value_));\n\t\t\t\treset();\n\t\t\t\treturn tmp;\n\t\t\t}\n\t\t};\n\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/optional.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/detail/print.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/print.hpp\"\n#ifndef BOOST_LEAF_3BAB50A2B87E11E89EEB30600C39171A\n#define BOOST_LEAF_3BAB50A2B87E11E89EEB30600C39171A\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tinline char const * check_prefix( char const * t, char const (&prefix)[N] )\n\t\t{\n\t\t\treturn std::strncmp(t,prefix,sizeof(prefix)-1)==0 ? t+sizeof(prefix)-1 : t;\n\t\t}\n\t}\n\n\ttemplate \n\tchar const * type() noexcept\n\t{\n\tchar const * t =\n#ifdef __FUNCSIG__\n\t\t__FUNCSIG__;\n#else\n\t\t__PRETTY_FUNCTION__;\n#endif\n#if defined(__clang__)\n\t\tassert(leaf_detail::check_prefix(t,\"const char *boost::leaf::type() \")==t+32);\n\t\treturn t+32;\n#elif defined(__GNUC__)\n\t\tassert(leaf_detail::check_prefix(t,\"const char* boost::leaf::type() \")==t+32);\n\t\treturn t+32;\n#else\n\t\tchar const * clang_style = leaf_detail::check_prefix(t,\"const char *boost::leaf::type() \");\n\t\tif( clang_style!=t )\n\t\t\treturn clang_style;\n\t\tchar const * gcc_style = leaf_detail::check_prefix(t,\"const char* boost::leaf::type() \");\n\t\tif( gcc_style!=t )\n\t\t\treturn gcc_style;\n#endif\n\t\treturn t;\n\t}\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct is_printable: std::false_type\n\t\t{\n\t\t};\n\n\t\ttemplate \n\t\tstruct is_printable()<(), void())>: std::true_type\n\t\t{\n\t\t};\n\n\t\t////////////////////////////////////////\n\n\t\ttemplate \n\t\tstruct has_printable_member_value: std::false_type\n\t\t{\n\t\t};\n\n\t\ttemplate \n\t\tstruct has_printable_member_value()<().value, void())>: std::true_type\n\t\t{\n\t\t};\n\n\t\t////////////////////////////////////////\n\n\t\ttemplate ::value, bool ValuePrintable=has_printable_member_value::value>\n\t\tstruct diagnostic;\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & x )\n\t\t\t{\n\t\t\t\tos << x;\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & x )\n\t\t\t{\n\t\t\t\tos << type() << \": \" << x.value;\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & )\n\t\t\t{\n\t\t\t\tos << type() << \": N/A\";\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, std::exception_ptr const & )\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/print.hpp\n//<<<<<<<<\n#include \n#include \n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\tclass id_factory\n\t\t{\n\t\t\tid_factory( id_factory const & ) = delete;\n\t\t\tid_factory & operator=( id_factory const & ) = delete;\n\n\t\t\tstatic int new_err_id() noexcept\n\t\t\t{\n\t\t\t\tstatic std::atomic c;\n\t\t\t\tif( unsigned id = ++c )\n\t\t\t\t\treturn int(id);\n\t\t\t\telse\n\t\t\t\t\treturn int(++c);\n\t\t\t}\n\n\t\t\tint next_id_;\n\t\t\tint last_id_;\n\n\t\t\tid_factory() noexcept:\n\t\t\t\tnext_id_(new_err_id()),\n\t\t\t\tlast_id_(next_id_-1)\n\t\t\t{\n\t\t\t}\n\n\t\tpublic:\n\n\t\t\tstatic id_factory & tl_instance() noexcept\n\t\t\t{\n\t\t\t\tstatic thread_local id_factory s;\n\t\t\t\treturn s;\n\t\t\t}\n\n\t\t\tint last_id() noexcept\n\t\t\t{\n\t\t\t\treturn last_id_;\n\t\t\t}\n\n\t\t\tint new_id() noexcept\n\t\t\t{\n\t\t\t\tint id = last_id_ = next_id_;\n\t\t\t\tnext_id_ = new_err_id();\n\t\t\t\treturn id;\n\t\t\t}\n\n\t\t\tint next_id() noexcept\n\t\t\t{\n\t\t\t\treturn next_id_;\n\t\t\t}\n\t\t};\n\n\t\tinline int last_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().last_id();\n\t\t}\n\n\t\tinline int new_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().new_id();\n\t\t}\n\n\t\tinline int next_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().next_id();\n\t\t}\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\tclass slot_base\n\t\t{\n\t\t\tslot_base( slot_base const & ) = delete;\n\t\t\tslot_base & operator=( slot_base const & ) = delete;\n\n\t\t\tvirtual bool slot_print( std::ostream &, int err_id ) const = 0;\n\n\t\tpublic:\n\n\t\t\tstatic void print( std::ostream & os, int err_id )\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t\tfor( slot_base const * p = first(); p; p=p->next_ )\n\t\t\t\t\tif( p->slot_print(os,err_id) )\n\t\t\t\t\t\tos << std::endl;\n\t\t\t}\n\n\t\tprotected:\n\n\t\t\tstatic slot_base const * & first() noexcept\n\t\t\t{\n\t\t\t\tstatic thread_local slot_base const * p = 0;\n\t\t\t\treturn p;\n\t\t\t}\n\n\t\t\tslot_base const * const next_;\n\n\t\t\tslot_base() noexcept:\n\t\t\t\tnext_(first())\n\t\t\t{\n\t\t\t\tfirst() = this;\n\t\t\t}\n\n\t\t\t~slot_base() noexcept\n\t\t\t{\n\t\t\t\tslot_base const * & p = first();\n\t\t\t\tassert(p==this);\n\t\t\t\tp = next_;\n\t\t\t}\n\t\t};\n\t}\n\n\t////////////////////////////////////////\n\n\tclass error_id;\n\tnamespace leaf_detail { class captured_exception; }\n\n\tclass error_info\n\t{\n\t\terror_info( error_info const & ) = delete;\n\t\terror_info & operator=( error_info const & ) = delete;\n\n\t\tint const err_id_;\n\t\tstd::exception const * const ex_;\n\t\tleaf_detail::captured_exception const * const cap_;\n\t\tvoid (* const print_ex_)( std::ostream &, std::exception const *, leaf_detail::captured_exception const * );\n\n\tpublic:\n\n\t\texplicit error_info( int err_id ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(0),\n\t\t\tcap_(0),\n\t\t\tprint_ex_(0)\n\t\t{\n\t\t}\n\n\t\terror_info( int err_id, std::exception const * ex, void (*print_ex)(std::ostream &, std::exception const *, leaf_detail::captured_exception const *) ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(ex),\n\t\t\tcap_(0),\n\t\t\tprint_ex_(print_ex)\n\t\t{\n\t\t\tassert(print_ex_!=0);\n\t\t}\n\n\t\terror_info( int err_id, std::exception const * ex, leaf_detail::captured_exception const * cap, void (*print_ex)(std::ostream &, std::exception const *, leaf_detail::captured_exception const *) ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(ex),\n\t\t\tcap_(cap),\n\t\t\tprint_ex_(print_ex)\n\t\t{\n\t\t\tassert(print_ex_!=0);\n\t\t}\n\n\t\tint err_id() const noexcept\n\t\t{\n\t\t\treturn err_id_;\n\t\t}\n\n\t\tbool has_error() const noexcept\n\t\t{\n\t\t\treturn err_id_!=0;\n\t\t}\n\n\t\terror_id error() const noexcept;\n\n\t\tbool has_exception() const noexcept\n\t\t{\n\t\t\treturn print_ex_!=0;\n\t\t}\n\n\t\tstd::exception const * exception() const noexcept\n\t\t{\n\t\t\tassert(has_exception());\n\t\t\treturn ex_;\n\t\t}\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, error_info const & x )\n\t\t{\n\t\t\tos << \"LEAF Error ID: \" << x.err_id_ << std::endl;\n\t\t\tif( x.print_ex_ )\n\t\t\t\tx.print_ex_(os,x.ex_,x.cap_);\n\t\t\tleaf_detail::slot_base::print(os,x.err_id_);\n\t\t\treturn os;\n\t\t}\n\t};\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct has_data_member_value\n\t\t{\n\t\t\tstatic constexpr bool value=false;\n\t\t};\n\n\t\ttemplate \n\t\tstruct has_data_member_value().value, void())>\n\t\t{\n\t\t\tstatic constexpr bool value=std::is_member_object_pointer::value;\n\t\t};\n\n\t\ttemplate \n\t\tstruct is_error_type_default\n\t\t{\n\t\t\tstatic constexpr bool value = has_data_member_value::value || std::is_base_of::value;\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\t}\n\n\ttemplate \n\tstruct is_error_type: leaf_detail::is_error_type_default\n\t{\n\t};\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\tclass monitor_base\n\t\t{\n\t\t\tmonitor_base( monitor_base const & ) = delete;\n\t\t\tmonitor_base & operator=( monitor_base const & ) = delete;\n\n\t\t\tmutable error_info const * ei_;\n\n\t\tprotected:\n\n\t\t\tmonitor_base() noexcept:\n\t\t\t\tei_(0)\n\t\t\t{\n\t\t\t}\n\n\t\t\tmonitor_base( monitor_base && x ) noexcept:\n\t\t\t\tei_(0)\n\t\t\t{\n\t\t\t\tx.ei_ = 0;\n\t\t\t}\n\n\t\t\tvoid set_error_info( error_info const & ei ) const noexcept\n\t\t\t{\n\t\t\t\tei_ = &ei;\n\t\t\t}\n\n\t\t\terror_info const & get_error_info() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn *ei_;\n\t\t\t}\n\n\t\tpublic:\n\n\t\t\tbool has_error() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->has_error();\n\t\t\t}\n\n\t\t\terror_id error() const noexcept;\n\n\t\t\tbool has_exception() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->has_exception();\n\t\t\t}\n\n\t\t\tstd::exception const * exception() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->exception();\n\t\t\t}\n\t\t};\n\t}\n\n\tclass diagnostic_info: leaf_detail::monitor_base\n\t{\n\tpublic:\n\n\t\tchar const * (*first_type)();\n\t\tint count;\n\n\t\texplicit diagnostic_info( char const * (*first_type)() ) noexcept:\n\t\t\tfirst_type(first_type),\n\t\t\tcount(1)\n\t\t{\n\t\t}\n\n\t\tusing monitor_base::set_error_info;\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, diagnostic_info const & x )\n\t\t{\n\t\t\tassert(x.first_type!=0);\n\t\t\tassert(x.count>0);\n\t\t\tos << x.get_error_info() << \"diagnostic_info: Detected \";\n\t\t\tif( x.count==1 )\n\t\t\t\tos << \"1 attempt to communicate an E-object\";\n\t\t\telse\n\t\t\t\tos << x.count << \" attempts to communicate unexpected E-objects, the first one\";\n\t\t\treturn os << \" of type \" << x.first_type() << std::endl;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, diagnostic_info const & ) noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t}\n\n\tclass verbose_diagnostic_info: leaf_detail::monitor_base\n\t{\n\t\tstd::string s_;\n\t\tstd::set already_;\n\n\tpublic:\n\n\t\tverbose_diagnostic_info() noexcept\n\t\t{\n\t\t}\n\n\t\tusing monitor_base::set_error_info;\n\n\t\tvoid reset() noexcept\n\t\t{\n\t\t\ts_.clear();\n\t\t\talready_.clear();\n\t\t}\n\n\t\ttemplate \n\t\tvoid add( E const & e )\n\t\t{\n\t\t\tstd::stringstream s;\n\t\t\tif( leaf_detail::diagnostic::print(s,e) && already_.insert(&type).second )\n\t\t\t{\n\t\t\t\ts << std::endl;\n\t\t\t\ts_ += s.str();\n\t\t\t}\n\t\t}\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, verbose_diagnostic_info const & x )\n\t\t{\n\t\t\tos <<\n\t\t\t\tx.get_error_info() <<\n\t\t\t\t\"verbose_diagnostic_info:\" << std::endl <<\n\t\t\t\tx.s_;\n\t\t\treturn os;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, verbose_diagnostic_info const & ) noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct id_e_pair\n\t\t{\n\t\t\tint err_id;\n\t\t\tE e;\n\n\t\t\texplicit id_e_pair( int err_id ) noexcept:\n\t\t\t\terr_id(err_id)\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\n\t\t\tid_e_pair( int err_id, E const & e ):\n\t\t\t\terr_id(err_id),\n\t\t\t\te(e)\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\n\t\t\tid_e_pair( int err_id, E && e ) noexcept:\n\t\t\t\terr_id(err_id),\n\t\t\t\te(std::forward(e))\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\t\t};\n\n\t\tinline int & tl_unexpected_enabled_counter() noexcept\n\t\t{\n\t\t\tstatic thread_local int c;\n\t\t\treturn c;\n\t\t}\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tclass slot:\n\t\t\tslot_base,\n\t\t\toptional>\n\t\t{\n\t\t\tslot( slot const & ) = delete;\n\t\t\tslot & operator=( slot const & ) = delete;\n\t\t\ttypedef optional> base;\n\t\t\tslot * prev_;\n\t\t\tstatic_assert(is_error_type::value,\"Not an error type\");\n\n\t\t\tbool slot_print( std::ostream &, int err_id ) const;\n\n\t\tprotected:\n\n\t\t\tslot() noexcept;\n\t\t\t~slot() noexcept;\n\n\t\tpublic:\n\n\t\t\tusing base::put;\n\t\t\tusing base::has_value;\n\t\t\tusing base::value;\n\t\t\tusing base::reset;\n\t\t\tusing base::emplace;\n\t\t};\n\n\t\ttemplate \n\t\tslot * & tl_slot_ptr() noexcept\n\t\t{\n\t\t\tstatic thread_local slot * s;\n\t\t\treturn s;\n\t\t}\n\n\t\ttemplate \n\t\tvoid put_unexpected( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tif( slot * p = tl_slot_ptr() )\n\t\t\t{\n\t\t\t\tif( p->has_value() )\n\t\t\t\t{\n\t\t\t\t\tauto & p_id_e = p->value();\n\t\t\t\t\tif( p_id_e.err_id==id_e.err_id )\n\t\t\t\t\t{\n\t\t\t\t\t\t++p_id_e.e.count;\n\t\t\t\t\t\treturn;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\t(void) p->put( id_e_pair(id_e.err_id,diagnostic_info(&type)) );\n\t\t\t}\n\t\t}\n\n\t\ttemplate \n\t\tvoid put_verbose_diagnostic_info( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tif( slot * sl = tl_slot_ptr() )\n\t\t\t{\n\t\t\t\tif( auto * pv = sl->has_value() )\n\t\t\t\t{\n\t\t\t\t\tif( pv->err_id!=id_e.err_id )\n\t\t\t\t\t{\n\t\t\t\t\t\tpv->err_id = id_e.err_id;\n\t\t\t\t\t\tpv->e.reset();\n\t\t\t\t\t}\n\t\t\t\t\tpv->e.add(id_e.e);\n\t\t\t\t}\n\t\t\t\telse\n\t\t\t\t\tsl->emplace(id_e.err_id).e.add(id_e.e);\n\t\t\t}\n\t\t}\n\n\t\ttemplate \n\t\tvoid no_expect_slot( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tput_unexpected(id_e);\n\t\t\tput_verbose_diagnostic_info(id_e);\n\t\t}\n\n\t\ttemplate \n\t\tint put_slot( int err_id, E && e ) noexcept\n\t\t{\n\t\t\tusing T = typename std::remove_cv::type>::type;\n\t\t\tassert(err_id);\n\t\t\tif( slot * p = tl_slot_ptr() )\n\t\t\t\t(void) p->put( id_e_pair(err_id,std::forward(e)) );\n\t\t\telse\n\t\t\t{\n\t\t\t\tint c = tl_unexpected_enabled_counter();\n\t\t\t\tassert(c>=0);\n\t\t\t\tif( c )\n\t\t\t\t\tno_expect_slot( id_e_pair(err_id,std::forward(e)) );\n\t\t\t}\n\t\t\treturn 0;\n\t\t}\n\n\t\ttemplate \n\t\tslot::slot() noexcept\n\t\t{\n\t\t\tslot * & p = tl_slot_ptr();\n\t\t\tprev_ = p;\n\t\t\tp = this;\n\t\t}\n\n\t\ttemplate \n\t\tslot::~slot() noexcept\n\t\t{\n\t\t\tif( prev_ )\n\t\t\t{\n\t\t\t\toptional> & p = *prev_;\n\t\t\t\tp = std::move(*this);\n\t\t\t}\n\t\t\telse\n\t\t\t{\n\t\t\t\tint c = tl_unexpected_enabled_counter();\n\t\t\t\tassert(c>=0);\n\t\t\t\tif( c && has_value() )\n\t\t\t\t\tno_expect_slot(value());\n\t\t\t}\n\t\t\ttl_slot_ptr() = prev_;\n\t\t}\n\n\t\ttemplate \n\t\tbool slot::slot_print( std::ostream & os, int err_id ) const\n\t\t{\n\t\t\tassert(err_id);\n\t\t\tif( tl_slot_ptr()==this )\n\t\t\t\tif( id_e_pair const * id_e = has_value() )\n\t\t\t\t\tif( id_e->err_id==err_id )\n\t\t\t\t\t\treturn diagnostice)>::print(os,id_e->e);\n\t\t\treturn false;\n\t\t}\n\n\t\tenum class result_variant\n\t\t{\n\t\t\tvalue,\n\t\t\terr_id,\n\t\t\tcap\n\t\t};\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/teleport.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/detail/function_traits.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/function_traits.hpp\"\n#ifndef BOOST_LEAF_14440B9CF07011E88377FD4B0ABE8030\n#define BOOST_LEAF_14440B9CF07011E88377FD4B0ABE8030\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/detail/mp11.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/mp11.hpp\"\n#ifndef BOOST_LEAF_91843B04108711E9AA4E56D98C7F4AFC\n#define BOOST_LEAF_91843B04108711E9AA4E56D98C7F4AFC\n\n// Copyright 2015-2017 Peter Dimov.\n// Copyright 2019 Emil Dotchevski.\n//\n// Distributed under the Boost Software License, Version 1.0.\n//\n// See accompanying file LICENSE_1_0.txt or copy at\n// http://www.boost.org/LICENSE_1_0.txt\n\n#include \n#include \n\nnamespace boost { namespace leaf { namespace leaf_detail_mp11 {\n\n// mp_list\ntemplate struct mp_list\n{\n};\n\n// mp_identity\ntemplate struct mp_identity\n{\n using type = T;\n};\n\n// mp_inherit\ntemplate struct mp_inherit: T... {};\n\n// mp_if, mp_if_c\nnamespace detail\n{\n\ntemplate struct mp_if_c_impl\n{\n};\n\ntemplate struct mp_if_c_impl\n{\n using type = T;\n};\n\ntemplate struct mp_if_c_impl\n{\n using type = E;\n};\n\n} // namespace detail\n\ntemplate using mp_if_c = typename detail::mp_if_c_impl::type;\ntemplate using mp_if = typename detail::mp_if_c_impl(C::value), T, E...>::type;\n\n// mp_bool\ntemplate using mp_bool = std::integral_constant;\n\nusing mp_true = mp_bool;\nusing mp_false = mp_bool;\n\n// mp_to_bool\ntemplate using mp_to_bool = mp_bool( T::value )>;\n\n// mp_not\ntemplate using mp_not = mp_bool< !T::value >;\n\n// mp_int\ntemplate using mp_int = std::integral_constant;\n\n// mp_size_t\ntemplate using mp_size_t = std::integral_constant;\n\n// mp_set_contains\nnamespace detail\n{\n\ntemplate struct mp_set_contains_impl;\n\ntemplate class L, class... T, class V> struct mp_set_contains_impl, V>\n{\n using type = mp_to_bool, mp_inherit...> > >;\n};\n\n} // namespace detail\n\ntemplate using mp_set_contains = typename detail::mp_set_contains_impl::type;\n\n// mp_set_push_back\nnamespace detail\n{\n\ntemplate struct mp_set_push_back_impl;\n\ntemplate class L, class... U> struct mp_set_push_back_impl>\n{\n using type = L;\n};\n\ntemplate class L, class... U, class T1, class... T> struct mp_set_push_back_impl, T1, T...>\n{\n using S = mp_if, T1>, L, L>;\n using type = typename mp_set_push_back_impl::type;\n};\n\n} // namespace detail\n\ntemplate using mp_set_push_back = typename detail::mp_set_push_back_impl::type;\n\n// mp_unique\nnamespace detail\n{\n\ntemplate struct mp_unique_impl;\n\ntemplate class L, class... T> struct mp_unique_impl>\n{\n using type = mp_set_push_back, T...>;\n};\n\n} // namespace detail\n\ntemplate using mp_unique = typename detail::mp_unique_impl::type;\n\n// mp_append\n\nnamespace detail\n{\n\ntemplate struct mp_append_impl;\n\ntemplate<> struct mp_append_impl<>\n{\n using type = mp_list<>;\n};\n\ntemplate class L, class... T> struct mp_append_impl>\n{\n using type = L;\n};\n\ntemplate class L1, class... T1, template class L2, class... T2, class... Lr> struct mp_append_impl, L2, Lr...>\n{\n using type = typename mp_append_impl, Lr...>::type;\n};\n\n}\n\ntemplate using mp_append = typename detail::mp_append_impl::type;\n\n// mp_front\nnamespace detail\n{\n\ntemplate struct mp_front_impl\n{\n// An error \"no type named 'type'\" here means that the argument to mp_front\n// is either not a list, or is an empty list\n};\n\ntemplate class L, class T1, class... T> struct mp_front_impl>\n{\n using type = T1;\n};\n\n} // namespace detail\n\ntemplate using mp_front = typename detail::mp_front_impl::type;\n\n// mp_pop_front\nnamespace detail\n{\n\ntemplate struct mp_pop_front_impl\n{\n// An error \"no type named 'type'\" here means that the argument to mp_pop_front\n// is either not a list, or is an empty list\n};\n\ntemplate class L, class T1, class... T> struct mp_pop_front_impl>\n{\n using type = L;\n};\n\n} // namespace detail\n\ntemplate using mp_pop_front = typename detail::mp_pop_front_impl::type;\n\n// mp_first\ntemplate using mp_first = mp_front;\n\n// mp_rest\ntemplate using mp_rest = mp_pop_front;\n\n// mp_remove_if\nnamespace detail\n{\n\ntemplate class P> struct mp_remove_if_impl;\n\ntemplate class L, class... T, template class P> struct mp_remove_if_impl, P>\n{\n template using _f = mp_if, mp_list<>, mp_list>;\n using type = mp_append, _f...>;\n};\n\n} // namespace detail\n\ntemplate class P> using mp_remove_if = typename detail::mp_remove_if_impl::type;\n\n} } }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/mp11.hpp\n//<<<<<<<<\n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tusing void_t = void;\n\n\t\ttemplate\n\t\tstruct function_traits\n\t\t{\n\t\t};\n\n\t\ttemplate\n\t\tstruct function_traits>\n\t\t{\n\t\tprivate:\n\n\t\t\ttypedef function_traits tr;\n\n\t\tpublic:\n\n\t\t\ttypedef typename tr::return_type return_type;\n\t\t\tstatic constexpr int arity = tr::arity - 1;\n\n\t\t\tusing mp_args = typename leaf_detail_mp11::mp_rest;\n\n\t\t\ttemplate \n\t\t\tstruct arg:\n\t\t\t\ttr::template arg\n\t\t\t{\n\t\t\t};\n\t\t};\n\n\t\ttemplate\n\t\tstruct function_traits\n\t\t{\n\t\t\ttypedef R return_type;\n\t\t\tstatic constexpr int arity = sizeof...(A);\n\n\t\t\tusing mp_args = leaf_detail_mp11::mp_list;\n\n\t\t\ttemplate \n\t\t\tstruct arg\n\t\t\t{\n\t\t\t\tstatic_assert(I < arity, \"I out of range\");\n\t\t\t\ttypedef typename std::tuple_element>::type type;\n\t\t\t};\n\t\t};\n\n\t\ttemplate struct function_traits : function_traits { };\n\t\ttemplate struct function_traits : function_traits { };\n\t\ttemplate struct function_traits : function_traits { };\n\t\ttemplate struct function_traits : function_traits { };\n\t\ttemplate struct function_traits : function_traits { };\n\t\ttemplate struct function_traits : function_traits { };\n\t} // namespace leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/function_traits.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/detail/mp11.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/mp11.hpp\"\n#ifndef BOOST_LEAF_91843B04108711E9AA4E56D98C7F4AFC\n#define BOOST_LEAF_91843B04108711E9AA4E56D98C7F4AFC\n\n// Copyright 2015-2017 Peter Dimov.\n// Copyright 2019 Emil Dotchevski.\n//\n// Distributed under the Boost Software License, Version 1.0.\n//\n// See accompanying file LICENSE_1_0.txt or copy at\n// http://www.boost.org/LICENSE_1_0.txt\n\n#include \n#include \n\nnamespace boost { namespace leaf { namespace leaf_detail_mp11 {\n\n// mp_list\ntemplate struct mp_list\n{\n};\n\n// mp_identity\ntemplate struct mp_identity\n{\n using type = T;\n};\n\n// mp_inherit\ntemplate struct mp_inherit: T... {};\n\n// mp_if, mp_if_c\nnamespace detail\n{\n\ntemplate struct mp_if_c_impl\n{\n};\n\ntemplate struct mp_if_c_impl\n{\n using type = T;\n};\n\ntemplate struct mp_if_c_impl\n{\n using type = E;\n};\n\n} // namespace detail\n\ntemplate using mp_if_c = typename detail::mp_if_c_impl::type;\ntemplate using mp_if = typename detail::mp_if_c_impl(C::value), T, E...>::type;\n\n// mp_bool\ntemplate using mp_bool = std::integral_constant;\n\nusing mp_true = mp_bool;\nusing mp_false = mp_bool;\n\n// mp_to_bool\ntemplate using mp_to_bool = mp_bool( T::value )>;\n\n// mp_not\ntemplate using mp_not = mp_bool< !T::value >;\n\n// mp_int\ntemplate using mp_int = std::integral_constant;\n\n// mp_size_t\ntemplate using mp_size_t = std::integral_constant;\n\n// mp_set_contains\nnamespace detail\n{\n\ntemplate struct mp_set_contains_impl;\n\ntemplate class L, class... T, class V> struct mp_set_contains_impl, V>\n{\n using type = mp_to_bool, mp_inherit...> > >;\n};\n\n} // namespace detail\n\ntemplate using mp_set_contains = typename detail::mp_set_contains_impl::type;\n\n// mp_set_push_back\nnamespace detail\n{\n\ntemplate struct mp_set_push_back_impl;\n\ntemplate class L, class... U> struct mp_set_push_back_impl>\n{\n using type = L;\n};\n\ntemplate class L, class... U, class T1, class... T> struct mp_set_push_back_impl, T1, T...>\n{\n using S = mp_if, T1>, L, L>;\n using type = typename mp_set_push_back_impl::type;\n};\n\n} // namespace detail\n\ntemplate using mp_set_push_back = typename detail::mp_set_push_back_impl::type;\n\n// mp_unique\nnamespace detail\n{\n\ntemplate struct mp_unique_impl;\n\ntemplate class L, class... T> struct mp_unique_impl>\n{\n using type = mp_set_push_back, T...>;\n};\n\n} // namespace detail\n\ntemplate using mp_unique = typename detail::mp_unique_impl::type;\n\n// mp_append\n\nnamespace detail\n{\n\ntemplate struct mp_append_impl;\n\ntemplate<> struct mp_append_impl<>\n{\n using type = mp_list<>;\n};\n\ntemplate class L, class... T> struct mp_append_impl>\n{\n using type = L;\n};\n\ntemplate class L1, class... T1, template class L2, class... T2, class... Lr> struct mp_append_impl, L2, Lr...>\n{\n using type = typename mp_append_impl, Lr...>::type;\n};\n\n}\n\ntemplate using mp_append = typename detail::mp_append_impl::type;\n\n// mp_front\nnamespace detail\n{\n\ntemplate struct mp_front_impl\n{\n// An error \"no type named 'type'\" here means that the argument to mp_front\n// is either not a list, or is an empty list\n};\n\ntemplate class L, class T1, class... T> struct mp_front_impl>\n{\n using type = T1;\n};\n\n} // namespace detail\n\ntemplate using mp_front = typename detail::mp_front_impl::type;\n\n// mp_pop_front\nnamespace detail\n{\n\ntemplate struct mp_pop_front_impl\n{\n// An error \"no type named 'type'\" here means that the argument to mp_pop_front\n// is either not a list, or is an empty list\n};\n\ntemplate class L, class T1, class... T> struct mp_pop_front_impl>\n{\n using type = L;\n};\n\n} // namespace detail\n\ntemplate using mp_pop_front = typename detail::mp_pop_front_impl::type;\n\n// mp_first\ntemplate using mp_first = mp_front;\n\n// mp_rest\ntemplate using mp_rest = mp_pop_front;\n\n// mp_remove_if\nnamespace detail\n{\n\ntemplate class P> struct mp_remove_if_impl;\n\ntemplate class L, class... T, template class P> struct mp_remove_if_impl, P>\n{\n template using _f = mp_if, mp_list<>, mp_list>;\n using type = mp_append, _f...>;\n};\n\n} // namespace detail\n\ntemplate class P> using mp_remove_if = typename detail::mp_remove_if_impl::type;\n\n} } }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/mp11.hpp\n//<<<<<<<<\n#include \n\nnamespace boost { namespace leaf {\n\n\ttemplate \n\tstruct failed\n\t{\n\t\tR value;\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct is_error_type_default>: std::false_type\n\t\t{\n\t\t};\n\t}\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate ::value, bool IsErrorCodeOrErrorCondition = std::is_error_code_enum::value | std::is_error_condition_enum::value>\n\t\tstruct match_traits;\n\n\t\ttemplate \n\t\tstruct match_traits\n\t\t{\n\t\t\tusing enumerator = T;\n\t\t\tusing e_type = enumerator;\n\t\t\tusing match_type = enumerator;\n\n\t\t\tstatic match_type const & get( e_type const & e ) noexcept\n\t\t\t{\n\t\t\t\treturn e;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct match_traits\n\t\t{\n\t\t\tusing enumerator = decltype(T::value);\n\t\t\tusing e_type = T;\n\t\t\tusing match_type = enumerator;\n\n\t\t\tstatic match_type const & get( e_type const & e ) noexcept\n\t\t\t{\n\t\t\t\treturn e.value;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct match_traits\n\t\t{\n\t\t\tusing enumerator = T;\n\t\t\tusing e_type = std::error_code;\n\t\t\tusing match_type = e_type;\n\n\t\t\tstatic match_type const & get( e_type const & e ) noexcept\n\t\t\t{\n\t\t\t\treturn e;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tbool check_value_pack( MatchType const & x, Enumerator v ) noexcept\n\t\t{\n\t\t\treturn x==v;\n\t\t}\n\n\t\ttemplate \n\t\tbool check_value_pack( MatchType const & x, Enumerator v1, EnumeratorRest ... v_rest ) noexcept\n\t\t{\n\t\t\treturn x==v1 || check_value_pack(x,v_rest...);\n\t\t}\n\n\t\ttemplate \n\t\tbool check_exception_pack( std::exception const * ex, Ex const * ) noexcept\n\t\t{\n\t\t\treturn dynamic_cast(ex)!=0;\n\t\t}\n\n\t\ttemplate \n\t\tbool check_exception_pack( std::exception const * ex, Ex const *, ExRest const * ... ex_rest ) noexcept\n\t\t{\n\t\t\treturn dynamic_cast(ex)!=0 || check_exception_pack(ex, ex_rest...);\n\t\t}\n\t}\n\n\ttemplate ::enumerator... V>\n\tstruct match\n\t{\n\t\tusing e_type = typename leaf_detail::match_traits::e_type;\n\t\tusing match_type = typename leaf_detail::match_traits::match_type;\n\t\tmatch_type const & value;\n\n\t\texplicit match( e_type const & e ):\n\t\t\tvalue(leaf_detail::match_traits::get(e))\n\t\t{\n\t\t}\n\n\t\tbool operator()() const noexcept\n\t\t{\n\t\t\treturn leaf_detail::check_value_pack(value,V...);\n\t\t}\n\t};\n\n\ttemplate \n\tstruct catch_\n\t{\n\t\tstd::exception const & value;\n\n\t\texplicit catch_( std::exception const & ex ):\n\t\t\tvalue(ex)\n\t\t{\n\t\t}\n\n\t\tbool operator()() const noexcept\n\t\t{\n\t\t\treturn leaf_detail::check_exception_pack(&value,static_cast(0)...);\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\tnamespace static_store_internal\n\t\t{\n\t\t\ttemplate \n\t\t\tstruct tuple_for_each\n\t\t\t{\n\t\t\t\tstatic void reset( Tuple & tup ) noexcept\n\t\t\t\t{\n\t\t\t\t\ttuple_for_each::reset(tup);\n\t\t\t\t\tstd::get(tup).reset();\n\t\t\t\t}\n\t\t\t};\n\n\t\t\ttemplate \n\t\t\tstruct tuple_for_each<0, Tuple>\n\t\t\t{\n\t\t\t\tstatic void reset( Tuple & ) noexcept { }\n\t\t\t};\n\n\t\t\t////////////////////////////////////////\n\n\t\t\tclass enable_any\n\t\t\t{\n\t\t\tprotected:\n\n\t\t\t\tenable_any() noexcept\n\t\t\t\t{\n\t\t\t\t\t++tl_unexpected_enabled_counter();\n\t\t\t\t}\n\n\t\t\t\t~enable_any() noexcept\n\t\t\t\t{\n\t\t\t\t\t--tl_unexpected_enabled_counter();\n\t\t\t\t}\n\t\t\t};\n\n\t\t\ttemplate \n\t\t\tclass static_store_slot:\n\t\t\t\tpublic slot\n\t\t\t{\n\t\t\tpublic:\n\t\t\t\toptional extract_optional( int err_id ) && noexcept\n\t\t\t\t{\n\t\t\t\t\tassert(err_id);\n\t\t\t\t\tslot(a)...);\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & put( T const & v )\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(v);\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & put( T && v ) noexcept\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(std::move(v));\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT const * has_value() const noexcept\n\t\t\t{\n\t\t\t\treturn has_value_ ? &value_ : 0;\n\t\t\t}\n\n\t\t\tT * has_value() noexcept\n\t\t\t{\n\t\t\t\treturn has_value_ ? &value_ : 0;\n\t\t\t}\n\n\t\t\tT const & value() const & noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & value() & noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT const && value() const && noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT value() && noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\tT tmp(std::move(value_));\n\t\t\t\treset();\n\t\t\t\treturn tmp;\n\t\t\t}\n\t\t};\n\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/optional.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/detail/print.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/print.hpp\"\n#ifndef BOOST_LEAF_3BAB50A2B87E11E89EEB30600C39171A\n#define BOOST_LEAF_3BAB50A2B87E11E89EEB30600C39171A\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tinline char const * check_prefix( char const * t, char const (&prefix)[N] )\n\t\t{\n\t\t\treturn std::strncmp(t,prefix,sizeof(prefix)-1)==0 ? t+sizeof(prefix)-1 : t;\n\t\t}\n\t}\n\n\ttemplate \n\tchar const * type() noexcept\n\t{\n\tchar const * t =\n#ifdef __FUNCSIG__\n\t\t__FUNCSIG__;\n#else\n\t\t__PRETTY_FUNCTION__;\n#endif\n#if defined(__clang__)\n\t\tassert(leaf_detail::check_prefix(t,\"const char *boost::leaf::type() \")==t+32);\n\t\treturn t+32;\n#elif defined(__GNUC__)\n\t\tassert(leaf_detail::check_prefix(t,\"const char* boost::leaf::type() \")==t+32);\n\t\treturn t+32;\n#else\n\t\tchar const * clang_style = leaf_detail::check_prefix(t,\"const char *boost::leaf::type() \");\n\t\tif( clang_style!=t )\n\t\t\treturn clang_style;\n\t\tchar const * gcc_style = leaf_detail::check_prefix(t,\"const char* boost::leaf::type() \");\n\t\tif( gcc_style!=t )\n\t\t\treturn gcc_style;\n#endif\n\t\treturn t;\n\t}\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct is_printable: std::false_type\n\t\t{\n\t\t};\n\n\t\ttemplate \n\t\tstruct is_printable()<(), void())>: std::true_type\n\t\t{\n\t\t};\n\n\t\t////////////////////////////////////////\n\n\t\ttemplate \n\t\tstruct has_printable_member_value: std::false_type\n\t\t{\n\t\t};\n\n\t\ttemplate \n\t\tstruct has_printable_member_value()<().value, void())>: std::true_type\n\t\t{\n\t\t};\n\n\t\t////////////////////////////////////////\n\n\t\ttemplate ::value, bool ValuePrintable=has_printable_member_value::value>\n\t\tstruct diagnostic;\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & x )\n\t\t\t{\n\t\t\t\tos << x;\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & x )\n\t\t\t{\n\t\t\t\tos << type() << \": \" << x.value;\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & )\n\t\t\t{\n\t\t\t\tos << type() << \": N/A\";\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, std::exception_ptr const & )\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/print.hpp\n//<<<<<<<<\n#include \n#include \n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\tclass id_factory\n\t\t{\n\t\t\tid_factory( id_factory const & ) = delete;\n\t\t\tid_factory & operator=( id_factory const & ) = delete;\n\n\t\t\tstatic int new_err_id() noexcept\n\t\t\t{\n\t\t\t\tstatic std::atomic c;\n\t\t\t\tif( unsigned id = ++c )\n\t\t\t\t\treturn int(id);\n\t\t\t\telse\n\t\t\t\t\treturn int(++c);\n\t\t\t}\n\n\t\t\tint next_id_;\n\t\t\tint last_id_;\n\n\t\t\tid_factory() noexcept:\n\t\t\t\tnext_id_(new_err_id()),\n\t\t\t\tlast_id_(next_id_-1)\n\t\t\t{\n\t\t\t}\n\n\t\tpublic:\n\n\t\t\tstatic id_factory & tl_instance() noexcept\n\t\t\t{\n\t\t\t\tstatic thread_local id_factory s;\n\t\t\t\treturn s;\n\t\t\t}\n\n\t\t\tint last_id() noexcept\n\t\t\t{\n\t\t\t\treturn last_id_;\n\t\t\t}\n\n\t\t\tint new_id() noexcept\n\t\t\t{\n\t\t\t\tint id = last_id_ = next_id_;\n\t\t\t\tnext_id_ = new_err_id();\n\t\t\t\treturn id;\n\t\t\t}\n\n\t\t\tint next_id() noexcept\n\t\t\t{\n\t\t\t\treturn next_id_;\n\t\t\t}\n\t\t};\n\n\t\tinline int last_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().last_id();\n\t\t}\n\n\t\tinline int new_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().new_id();\n\t\t}\n\n\t\tinline int next_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().next_id();\n\t\t}\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\tclass slot_base\n\t\t{\n\t\t\tslot_base( slot_base const & ) = delete;\n\t\t\tslot_base & operator=( slot_base const & ) = delete;\n\n\t\t\tvirtual bool slot_print( std::ostream &, int err_id ) const = 0;\n\n\t\tpublic:\n\n\t\t\tstatic void print( std::ostream & os, int err_id )\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t\tfor( slot_base const * p = first(); p; p=p->next_ )\n\t\t\t\t\tif( p->slot_print(os,err_id) )\n\t\t\t\t\t\tos << std::endl;\n\t\t\t}\n\n\t\tprotected:\n\n\t\t\tstatic slot_base const * & first() noexcept\n\t\t\t{\n\t\t\t\tstatic thread_local slot_base const * p = 0;\n\t\t\t\treturn p;\n\t\t\t}\n\n\t\t\tslot_base const * const next_;\n\n\t\t\tslot_base() noexcept:\n\t\t\t\tnext_(first())\n\t\t\t{\n\t\t\t\tfirst() = this;\n\t\t\t}\n\n\t\t\t~slot_base() noexcept\n\t\t\t{\n\t\t\t\tslot_base const * & p = first();\n\t\t\t\tassert(p==this);\n\t\t\t\tp = next_;\n\t\t\t}\n\t\t};\n\t}\n\n\t////////////////////////////////////////\n\n\tclass error_id;\n\tnamespace leaf_detail { class captured_exception; }\n\n\tclass error_info\n\t{\n\t\terror_info( error_info const & ) = delete;\n\t\terror_info & operator=( error_info const & ) = delete;\n\n\t\tint const err_id_;\n\t\tstd::exception const * const ex_;\n\t\tleaf_detail::captured_exception const * const cap_;\n\t\tvoid (* const print_ex_)( std::ostream &, std::exception const *, leaf_detail::captured_exception const * );\n\n\tpublic:\n\n\t\texplicit error_info( int err_id ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(0),\n\t\t\tcap_(0),\n\t\t\tprint_ex_(0)\n\t\t{\n\t\t}\n\n\t\terror_info( int err_id, std::exception const * ex, void (*print_ex)(std::ostream &, std::exception const *, leaf_detail::captured_exception const *) ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(ex),\n\t\t\tcap_(0),\n\t\t\tprint_ex_(print_ex)\n\t\t{\n\t\t\tassert(print_ex_!=0);\n\t\t}\n\n\t\terror_info( int err_id, std::exception const * ex, leaf_detail::captured_exception const * cap, void (*print_ex)(std::ostream &, std::exception const *, leaf_detail::captured_exception const *) ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(ex),\n\t\t\tcap_(cap),\n\t\t\tprint_ex_(print_ex)\n\t\t{\n\t\t\tassert(print_ex_!=0);\n\t\t}\n\n\t\tint err_id() const noexcept\n\t\t{\n\t\t\treturn err_id_;\n\t\t}\n\n\t\tbool has_error() const noexcept\n\t\t{\n\t\t\treturn err_id_!=0;\n\t\t}\n\n\t\terror_id error() const noexcept;\n\n\t\tbool has_exception() const noexcept\n\t\t{\n\t\t\treturn print_ex_!=0;\n\t\t}\n\n\t\tstd::exception const * exception() const noexcept\n\t\t{\n\t\t\tassert(has_exception());\n\t\t\treturn ex_;\n\t\t}\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, error_info const & x )\n\t\t{\n\t\t\tos << \"LEAF Error ID: \" << x.err_id_ << std::endl;\n\t\t\tif( x.print_ex_ )\n\t\t\t\tx.print_ex_(os,x.ex_,x.cap_);\n\t\t\tleaf_detail::slot_base::print(os,x.err_id_);\n\t\t\treturn os;\n\t\t}\n\t};\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct has_data_member_value\n\t\t{\n\t\t\tstatic constexpr bool value=false;\n\t\t};\n\n\t\ttemplate \n\t\tstruct has_data_member_value().value, void())>\n\t\t{\n\t\t\tstatic constexpr bool value=std::is_member_object_pointer::value;\n\t\t};\n\n\t\ttemplate \n\t\tstruct is_error_type_default\n\t\t{\n\t\t\tstatic constexpr bool value = has_data_member_value::value || std::is_base_of::value;\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\t}\n\n\ttemplate \n\tstruct is_error_type: leaf_detail::is_error_type_default\n\t{\n\t};\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\tclass monitor_base\n\t\t{\n\t\t\tmonitor_base( monitor_base const & ) = delete;\n\t\t\tmonitor_base & operator=( monitor_base const & ) = delete;\n\n\t\t\tmutable error_info const * ei_;\n\n\t\tprotected:\n\n\t\t\tmonitor_base() noexcept:\n\t\t\t\tei_(0)\n\t\t\t{\n\t\t\t}\n\n\t\t\tmonitor_base( monitor_base && x ) noexcept:\n\t\t\t\tei_(0)\n\t\t\t{\n\t\t\t\tx.ei_ = 0;\n\t\t\t}\n\n\t\t\tvoid set_error_info( error_info const & ei ) const noexcept\n\t\t\t{\n\t\t\t\tei_ = &ei;\n\t\t\t}\n\n\t\t\terror_info const & get_error_info() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn *ei_;\n\t\t\t}\n\n\t\tpublic:\n\n\t\t\tbool has_error() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->has_error();\n\t\t\t}\n\n\t\t\terror_id error() const noexcept;\n\n\t\t\tbool has_exception() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->has_exception();\n\t\t\t}\n\n\t\t\tstd::exception const * exception() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->exception();\n\t\t\t}\n\t\t};\n\t}\n\n\tclass diagnostic_info: leaf_detail::monitor_base\n\t{\n\tpublic:\n\n\t\tchar const * (*first_type)();\n\t\tint count;\n\n\t\texplicit diagnostic_info( char const * (*first_type)() ) noexcept:\n\t\t\tfirst_type(first_type),\n\t\t\tcount(1)\n\t\t{\n\t\t}\n\n\t\tusing monitor_base::set_error_info;\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, diagnostic_info const & x )\n\t\t{\n\t\t\tassert(x.first_type!=0);\n\t\t\tassert(x.count>0);\n\t\t\tos << x.get_error_info() << \"diagnostic_info: Detected \";\n\t\t\tif( x.count==1 )\n\t\t\t\tos << \"1 attempt to communicate an E-object\";\n\t\t\telse\n\t\t\t\tos << x.count << \" attempts to communicate unexpected E-objects, the first one\";\n\t\t\treturn os << \" of type \" << x.first_type() << std::endl;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, diagnostic_info const & ) noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t}\n\n\tclass verbose_diagnostic_info: leaf_detail::monitor_base\n\t{\n\t\tstd::string s_;\n\t\tstd::set already_;\n\n\tpublic:\n\n\t\tverbose_diagnostic_info() noexcept\n\t\t{\n\t\t}\n\n\t\tusing monitor_base::set_error_info;\n\n\t\tvoid reset() noexcept\n\t\t{\n\t\t\ts_.clear();\n\t\t\talready_.clear();\n\t\t}\n\n\t\ttemplate \n\t\tvoid add( E const & e )\n\t\t{\n\t\t\tstd::stringstream s;\n\t\t\tif( leaf_detail::diagnostic::print(s,e) && already_.insert(&type).second )\n\t\t\t{\n\t\t\t\ts << std::endl;\n\t\t\t\ts_ += s.str();\n\t\t\t}\n\t\t}\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, verbose_diagnostic_info const & x )\n\t\t{\n\t\t\tos <<\n\t\t\t\tx.get_error_info() <<\n\t\t\t\t\"verbose_diagnostic_info:\" << std::endl <<\n\t\t\t\tx.s_;\n\t\t\treturn os;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, verbose_diagnostic_info const & ) noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct id_e_pair\n\t\t{\n\t\t\tint err_id;\n\t\t\tE e;\n\n\t\t\texplicit id_e_pair( int err_id ) noexcept:\n\t\t\t\terr_id(err_id)\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\n\t\t\tid_e_pair( int err_id, E const & e ):\n\t\t\t\terr_id(err_id),\n\t\t\t\te(e)\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\n\t\t\tid_e_pair( int err_id, E && e ) noexcept:\n\t\t\t\terr_id(err_id),\n\t\t\t\te(std::forward(e))\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\t\t};\n\n\t\tinline int & tl_unexpected_enabled_counter() noexcept\n\t\t{\n\t\t\tstatic thread_local int c;\n\t\t\treturn c;\n\t\t}\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tclass slot:\n\t\t\tslot_base,\n\t\t\toptional>\n\t\t{\n\t\t\tslot( slot const & ) = delete;\n\t\t\tslot & operator=( slot const & ) = delete;\n\t\t\ttypedef optional> base;\n\t\t\tslot * prev_;\n\t\t\tstatic_assert(is_error_type::value,\"Not an error type\");\n\n\t\t\tbool slot_print( std::ostream &, int err_id ) const;\n\n\t\tprotected:\n\n\t\t\tslot() noexcept;\n\t\t\t~slot() noexcept;\n\n\t\tpublic:\n\n\t\t\tusing base::put;\n\t\t\tusing base::has_value;\n\t\t\tusing base::value;\n\t\t\tusing base::reset;\n\t\t\tusing base::emplace;\n\t\t};\n\n\t\ttemplate \n\t\tslot * & tl_slot_ptr() noexcept\n\t\t{\n\t\t\tstatic thread_local slot * s;\n\t\t\treturn s;\n\t\t}\n\n\t\ttemplate \n\t\tvoid put_unexpected( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tif( slot * p = tl_slot_ptr() )\n\t\t\t{\n\t\t\t\tif( p->has_value() )\n\t\t\t\t{\n\t\t\t\t\tauto & p_id_e = p->value();\n\t\t\t\t\tif( p_id_e.err_id==id_e.err_id )\n\t\t\t\t\t{\n\t\t\t\t\t\t++p_id_e.e.count;\n\t\t\t\t\t\treturn;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\t(void) p->put( id_e_pair(id_e.err_id,diagnostic_info(&type)) );\n\t\t\t}\n\t\t}\n\n\t\ttemplate \n\t\tvoid put_verbose_diagnostic_info( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tif( slot * sl = tl_slot_ptr() )\n\t\t\t{\n\t\t\t\tif( auto * pv = sl->has_value() )\n\t\t\t\t{\n\t\t\t\t\tif( pv->err_id!=id_e.err_id )\n\t\t\t\t\t{\n\t\t\t\t\t\tpv->err_id = id_e.err_id;\n\t\t\t\t\t\tpv->e.reset();\n\t\t\t\t\t}\n\t\t\t\t\tpv->e.add(id_e.e);\n\t\t\t\t}\n\t\t\t\telse\n\t\t\t\t\tsl->emplace(id_e.err_id).e.add(id_e.e);\n\t\t\t}\n\t\t}\n\n\t\ttemplate \n\t\tvoid no_expect_slot( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tput_unexpected(id_e);\n\t\t\tput_verbose_diagnostic_info(id_e);\n\t\t}\n\n\t\ttemplate \n\t\tint put_slot( int err_id, E && e ) noexcept\n\t\t{\n\t\t\tusing T = typename std::remove_cv::type>::type;\n\t\t\tassert(err_id);\n\t\t\tif( slot * p = tl_slot_ptr() )\n\t\t\t\t(void) p->put( id_e_pair(err_id,std::forward(e)) );\n\t\t\telse\n\t\t\t{\n\t\t\t\tint c = tl_unexpected_enabled_counter();\n\t\t\t\tassert(c>=0);\n\t\t\t\tif( c )\n\t\t\t\t\tno_expect_slot( id_e_pair(err_id,std::forward(e)) );\n\t\t\t}\n\t\t\treturn 0;\n\t\t}\n\n\t\ttemplate \n\t\tslot::slot() noexcept\n\t\t{\n\t\t\tslot * & p = tl_slot_ptr();\n\t\t\tprev_ = p;\n\t\t\tp = this;\n\t\t}\n\n\t\ttemplate \n\t\tslot::~slot() noexcept\n\t\t{\n\t\t\tif( prev_ )\n\t\t\t{\n\t\t\t\toptional> & p = *prev_;\n\t\t\t\tp = std::move(*this);\n\t\t\t}\n\t\t\telse\n\t\t\t{\n\t\t\t\tint c = tl_unexpected_enabled_counter();\n\t\t\t\tassert(c>=0);\n\t\t\t\tif( c && has_value() )\n\t\t\t\t\tno_expect_slot(value());\n\t\t\t}\n\t\t\ttl_slot_ptr() = prev_;\n\t\t}\n\n\t\ttemplate \n\t\tbool slot::slot_print( std::ostream & os, int err_id ) const\n\t\t{\n\t\t\tassert(err_id);\n\t\t\tif( tl_slot_ptr()==this )\n\t\t\t\tif( id_e_pair const * id_e = has_value() )\n\t\t\t\t\tif( id_e->err_id==err_id )\n\t\t\t\t\t\treturn diagnostice)>::print(os,id_e->e);\n\t\t\treturn false;\n\t\t}\n\n\t\tenum class result_variant\n\t\t{\n\t\t\tvalue,\n\t\t\terr_id,\n\t\t\tcap\n\t\t};\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/teleport.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/detail/function_traits.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/function_traits.hpp\"\n#ifndef BOOST_LEAF_14440B9CF07011E88377FD4B0ABE8030\n#define BOOST_LEAF_14440B9CF07011E88377FD4B0ABE8030\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/detail/mp11.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/mp11.hpp\"\n#ifndef BOOST_LEAF_91843B04108711E9AA4E56D98C7F4AFC\n#define BOOST_LEAF_91843B04108711E9AA4E56D98C7F4AFC\n\n// Copyright 2015-2017 Peter Dimov.\n// Copyright 2019 Emil Dotchevski.\n//\n// Distributed under the Boost Software License, Version 1.0.\n//\n// See accompanying file LICENSE_1_0.txt or copy at\n// http://www.boost.org/LICENSE_1_0.txt\n\n#include \n#include \n\nnamespace boost { namespace leaf { namespace leaf_detail_mp11 {\n\n// mp_list\ntemplate struct mp_list\n{\n};\n\n// mp_identity\ntemplate struct mp_identity\n{\n using type = T;\n};\n\n// mp_inherit\ntemplate struct mp_inherit: T... {};\n\n// mp_if, mp_if_c\nnamespace detail\n{\n\ntemplate struct mp_if_c_impl\n{\n};\n\ntemplate struct mp_if_c_impl\n{\n using type = T;\n};\n\ntemplate struct mp_if_c_impl\n{\n using type = E;\n};\n\n} // namespace detail\n\ntemplate using mp_if_c = typename detail::mp_if_c_impl::type;\ntemplate using mp_if = typename detail::mp_if_c_impl(C::value), T, E...>::type;\n\n// mp_bool\ntemplate using mp_bool = std::integral_constant;\n\nusing mp_true = mp_bool;\nusing mp_false = mp_bool;\n\n// mp_to_bool\ntemplate using mp_to_bool = mp_bool( T::value )>;\n\n// mp_not\ntemplate using mp_not = mp_bool< !T::value >;\n\n// mp_int\ntemplate using mp_int = std::integral_constant;\n\n// mp_size_t\ntemplate using mp_size_t = std::integral_constant;\n\n// mp_set_contains\nnamespace detail\n{\n\ntemplate struct mp_set_contains_impl;\n\ntemplate class L, class... T, class V> struct mp_set_contains_impl, V>\n{\n using type = mp_to_bool, mp_inherit...> > >;\n};\n\n} // namespace detail\n\ntemplate using mp_set_contains = typename detail::mp_set_contains_impl::type;\n\n// mp_set_push_back\nnamespace detail\n{\n\ntemplate struct mp_set_push_back_impl;\n\ntemplate class L, class... U> struct mp_set_push_back_impl>\n{\n using type = L;\n};\n\ntemplate class L, class... U, class T1, class... T> struct mp_set_push_back_impl, T1, T...>\n{\n using S = mp_if, T1>, L, L>;\n using type = typename mp_set_push_back_impl::type;\n};\n\n} // namespace detail\n\ntemplate using mp_set_push_back = typename detail::mp_set_push_back_impl::type;\n\n// mp_unique\nnamespace detail\n{\n\ntemplate struct mp_unique_impl;\n\ntemplate class L, class... T> struct mp_unique_impl>\n{\n using type = mp_set_push_back, T...>;\n};\n\n} // namespace detail\n\ntemplate using mp_unique = typename detail::mp_unique_impl::type;\n\n// mp_append\n\nnamespace detail\n{\n\ntemplate struct mp_append_impl;\n\ntemplate<> struct mp_append_impl<>\n{\n using type = mp_list<>;\n};\n\ntemplate class L, class... T> struct mp_append_impl>\n{\n using type = L;\n};\n\ntemplate class L1, class... T1, template class L2, class... T2, class... Lr> struct mp_append_impl, L2, Lr...>\n{\n using type = typename mp_append_impl, Lr...>::type;\n};\n\n}\n\ntemplate using mp_append = typename detail::mp_append_impl::type;\n\n// mp_front\nnamespace detail\n{\n\ntemplate struct mp_front_impl\n{\n// An error \"no type named 'type'\" here means that the argument to mp_front\n// is either not a list, or is an empty list\n};\n\ntemplate class L, class T1, class... T> struct mp_front_impl>\n{\n using type = T1;\n};\n\n} // namespace detail\n\ntemplate using mp_front = typename detail::mp_front_impl::type;\n\n// mp_pop_front\nnamespace detail\n{\n\ntemplate struct mp_pop_front_impl\n{\n// An error \"no type named 'type'\" here means that the argument to mp_pop_front\n// is either not a list, or is an empty list\n};\n\ntemplate class L, class T1, class... T> struct mp_pop_front_impl>\n{\n using type = L;\n};\n\n} // namespace detail\n\ntemplate using mp_pop_front = typename detail::mp_pop_front_impl::type;\n\n// mp_first\ntemplate using mp_first = mp_front;\n\n// mp_rest\ntemplate using mp_rest = mp_pop_front;\n\n// mp_remove_if\nnamespace detail\n{\n\ntemplate class P> struct mp_remove_if_impl;\n\ntemplate class L, class... T, template class P> struct mp_remove_if_impl, P>\n{\n template using _f = mp_if, mp_list<>, mp_list>;\n using type = mp_append, _f...>;\n};\n\n} // namespace detail\n\ntemplate class P> using mp_remove_if = typename detail::mp_remove_if_impl::type;\n\n} } }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/mp11.hpp\n//<<<<<<<<\n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tusing void_t = void;\n\n\t\ttemplate\n\t\tstruct function_traits\n\t\t{\n\t\t};\n\n\t\ttemplate\n\t\tstruct function_traits>\n\t\t{\n\t\tprivate:\n\n\t\t\ttypedef function_traits tr;\n\n\t\tpublic:\n\n\t\t\ttypedef typename tr::return_type return_type;\n\t\t\tstatic constexpr int arity = tr::arity - 1;\n\n\t\t\tusing mp_args = typename leaf_detail_mp11::mp_rest;\n\n\t\t\ttemplate \n\t\t\tstruct arg:\n\t\t\t\ttr::template arg\n\t\t\t{\n\t\t\t};\n\t\t};\n\n\t\ttemplate\n\t\tstruct function_traits\n\t\t{\n\t\t\ttypedef R return_type;\n\t\t\tstatic constexpr int arity = sizeof...(A);\n\n\t\t\tusing mp_args = leaf_detail_mp11::mp_list;\n\n\t\t\ttemplate \n\t\t\tstruct arg\n\t\t\t{\n\t\t\t\tstatic_assert(I < arity, \"I out of range\");\n\t\t\t\ttypedef typename std::tuple_element>::type type;\n\t\t\t};\n\t\t};\n\n\t\ttemplate struct function_traits : function_traits { };\n\t\ttemplate struct function_traits : function_traits { };\n\t\ttemplate struct function_traits : function_traits { };\n\t\ttemplate struct function_traits : function_traits { };\n\t\ttemplate struct function_traits : function_traits { };\n\t\ttemplate struct function_traits : function_traits { };\n\t} // namespace leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/function_traits.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/detail/mp11.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/mp11.hpp\"\n#ifndef BOOST_LEAF_91843B04108711E9AA4E56D98C7F4AFC\n#define BOOST_LEAF_91843B04108711E9AA4E56D98C7F4AFC\n\n// Copyright 2015-2017 Peter Dimov.\n// Copyright 2019 Emil Dotchevski.\n//\n// Distributed under the Boost Software License, Version 1.0.\n//\n// See accompanying file LICENSE_1_0.txt or copy at\n// http://www.boost.org/LICENSE_1_0.txt\n\n#include \n#include \n\nnamespace boost { namespace leaf { namespace leaf_detail_mp11 {\n\n// mp_list\ntemplate struct mp_list\n{\n};\n\n// mp_identity\ntemplate struct mp_identity\n{\n using type = T;\n};\n\n// mp_inherit\ntemplate struct mp_inherit: T... {};\n\n// mp_if, mp_if_c\nnamespace detail\n{\n\ntemplate struct mp_if_c_impl\n{\n};\n\ntemplate struct mp_if_c_impl\n{\n using type = T;\n};\n\ntemplate struct mp_if_c_impl\n{\n using type = E;\n};\n\n} // namespace detail\n\ntemplate using mp_if_c = typename detail::mp_if_c_impl::type;\ntemplate using mp_if = typename detail::mp_if_c_impl(C::value), T, E...>::type;\n\n// mp_bool\ntemplate using mp_bool = std::integral_constant;\n\nusing mp_true = mp_bool;\nusing mp_false = mp_bool;\n\n// mp_to_bool\ntemplate using mp_to_bool = mp_bool( T::value )>;\n\n// mp_not\ntemplate using mp_not = mp_bool< !T::value >;\n\n// mp_int\ntemplate using mp_int = std::integral_constant;\n\n// mp_size_t\ntemplate using mp_size_t = std::integral_constant;\n\n// mp_set_contains\nnamespace detail\n{\n\ntemplate struct mp_set_contains_impl;\n\ntemplate class L, class... T, class V> struct mp_set_contains_impl, V>\n{\n using type = mp_to_bool, mp_inherit...> > >;\n};\n\n} // namespace detail\n\ntemplate using mp_set_contains = typename detail::mp_set_contains_impl::type;\n\n// mp_set_push_back\nnamespace detail\n{\n\ntemplate struct mp_set_push_back_impl;\n\ntemplate class L, class... U> struct mp_set_push_back_impl>\n{\n using type = L;\n};\n\ntemplate class L, class... U, class T1, class... T> struct mp_set_push_back_impl, T1, T...>\n{\n using S = mp_if, T1>, L, L>;\n using type = typename mp_set_push_back_impl::type;\n};\n\n} // namespace detail\n\ntemplate using mp_set_push_back = typename detail::mp_set_push_back_impl::type;\n\n// mp_unique\nnamespace detail\n{\n\ntemplate struct mp_unique_impl;\n\ntemplate class L, class... T> struct mp_unique_impl>\n{\n using type = mp_set_push_back, T...>;\n};\n\n} // namespace detail\n\ntemplate using mp_unique = typename detail::mp_unique_impl::type;\n\n// mp_append\n\nnamespace detail\n{\n\ntemplate struct mp_append_impl;\n\ntemplate<> struct mp_append_impl<>\n{\n using type = mp_list<>;\n};\n\ntemplate class L, class... T> struct mp_append_impl>\n{\n using type = L;\n};\n\ntemplate class L1, class... T1, template class L2, class... T2, class... Lr> struct mp_append_impl, L2, Lr...>\n{\n using type = typename mp_append_impl, Lr...>::type;\n};\n\n}\n\ntemplate using mp_append = typename detail::mp_append_impl::type;\n\n// mp_front\nnamespace detail\n{\n\ntemplate struct mp_front_impl\n{\n// An error \"no type named 'type'\" here means that the argument to mp_front\n// is either not a list, or is an empty list\n};\n\ntemplate class L, class T1, class... T> struct mp_front_impl>\n{\n using type = T1;\n};\n\n} // namespace detail\n\ntemplate using mp_front = typename detail::mp_front_impl::type;\n\n// mp_pop_front\nnamespace detail\n{\n\ntemplate struct mp_pop_front_impl\n{\n// An error \"no type named 'type'\" here means that the argument to mp_pop_front\n// is either not a list, or is an empty list\n};\n\ntemplate class L, class T1, class... T> struct mp_pop_front_impl>\n{\n using type = L;\n};\n\n} // namespace detail\n\ntemplate using mp_pop_front = typename detail::mp_pop_front_impl::type;\n\n// mp_first\ntemplate using mp_first = mp_front;\n\n// mp_rest\ntemplate using mp_rest = mp_pop_front;\n\n// mp_remove_if\nnamespace detail\n{\n\ntemplate class P> struct mp_remove_if_impl;\n\ntemplate class L, class... T, template class P> struct mp_remove_if_impl, P>\n{\n template using _f = mp_if, mp_list<>, mp_list>;\n using type = mp_append, _f...>;\n};\n\n} // namespace detail\n\ntemplate class P> using mp_remove_if = typename detail::mp_remove_if_impl::type;\n\n} } }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/mp11.hpp\n//<<<<<<<<\n#include \n\nnamespace boost { namespace leaf {\n\n\ttemplate \n\tstruct failed\n\t{\n\t\tR value;\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct is_error_type_default>: std::false_type\n\t\t{\n\t\t};\n\t}\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate ::value, bool IsErrorCodeOrErrorCondition = std::is_error_code_enum::value | std::is_error_condition_enum::value>\n\t\tstruct match_traits;\n\n\t\ttemplate \n\t\tstruct match_traits\n\t\t{\n\t\t\tusing enumerator = T;\n\t\t\tusing e_type = enumerator;\n\t\t\tusing match_type = enumerator;\n\n\t\t\tstatic match_type const & get( e_type const & e ) noexcept\n\t\t\t{\n\t\t\t\treturn e;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct match_traits\n\t\t{\n\t\t\tusing enumerator = decltype(T::value);\n\t\t\tusing e_type = T;\n\t\t\tusing match_type = enumerator;\n\n\t\t\tstatic match_type const & get( e_type const & e ) noexcept\n\t\t\t{\n\t\t\t\treturn e.value;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct match_traits\n\t\t{\n\t\t\tusing enumerator = T;\n\t\t\tusing e_type = std::error_code;\n\t\t\tusing match_type = e_type;\n\n\t\t\tstatic match_type const & get( e_type const & e ) noexcept\n\t\t\t{\n\t\t\t\treturn e;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tbool check_value_pack( MatchType const & x, Enumerator v ) noexcept\n\t\t{\n\t\t\treturn x==v;\n\t\t}\n\n\t\ttemplate \n\t\tbool check_value_pack( MatchType const & x, Enumerator v1, EnumeratorRest ... v_rest ) noexcept\n\t\t{\n\t\t\treturn x==v1 || check_value_pack(x,v_rest...);\n\t\t}\n\n\t\ttemplate \n\t\tbool check_exception_pack( std::exception const * ex, Ex const * ) noexcept\n\t\t{\n\t\t\treturn dynamic_cast(ex)!=0;\n\t\t}\n\n\t\ttemplate \n\t\tbool check_exception_pack( std::exception const * ex, Ex const *, ExRest const * ... ex_rest ) noexcept\n\t\t{\n\t\t\treturn dynamic_cast(ex)!=0 || check_exception_pack(ex, ex_rest...);\n\t\t}\n\t}\n\n\ttemplate ::enumerator... V>\n\tstruct match\n\t{\n\t\tusing e_type = typename leaf_detail::match_traits::e_type;\n\t\tusing match_type = typename leaf_detail::match_traits::match_type;\n\t\tmatch_type const & value;\n\n\t\texplicit match( e_type const & e ):\n\t\t\tvalue(leaf_detail::match_traits::get(e))\n\t\t{\n\t\t}\n\n\t\tbool operator()() const noexcept\n\t\t{\n\t\t\treturn leaf_detail::check_value_pack(value,V...);\n\t\t}\n\t};\n\n\ttemplate \n\tstruct catch_\n\t{\n\t\tstd::exception const & value;\n\n\t\texplicit catch_( std::exception const & ex ):\n\t\t\tvalue(ex)\n\t\t{\n\t\t}\n\n\t\tbool operator()() const noexcept\n\t\t{\n\t\t\treturn leaf_detail::check_exception_pack(&value,static_cast(0)...);\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\tnamespace static_store_internal\n\t\t{\n\t\t\ttemplate \n\t\t\tstruct tuple_for_each\n\t\t\t{\n\t\t\t\tstatic void reset( Tuple & tup ) noexcept\n\t\t\t\t{\n\t\t\t\t\ttuple_for_each::reset(tup);\n\t\t\t\t\tstd::get(tup).reset();\n\t\t\t\t}\n\t\t\t};\n\n\t\t\ttemplate \n\t\t\tstruct tuple_for_each<0, Tuple>\n\t\t\t{\n\t\t\t\tstatic void reset( Tuple & ) noexcept { }\n\t\t\t};\n\n\t\t\t////////////////////////////////////////\n\n\t\t\tclass enable_any\n\t\t\t{\n\t\t\tprotected:\n\n\t\t\t\tenable_any() noexcept\n\t\t\t\t{\n\t\t\t\t\t++tl_unexpected_enabled_counter();\n\t\t\t\t}\n\n\t\t\t\t~enable_any() noexcept\n\t\t\t\t{\n\t\t\t\t\t--tl_unexpected_enabled_counter();\n\t\t\t\t}\n\t\t\t};\n\n\t\t\ttemplate \n\t\t\tclass static_store_slot:\n\t\t\t\tpublic slot(a)...);\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & put( T const & v )\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(v);\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & put( T && v ) noexcept\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(std::move(v));\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT const * has_value() const noexcept\n\t\t\t{\n\t\t\t\treturn has_value_ ? &value_ : 0;\n\t\t\t}\n\n\t\t\tT * has_value() noexcept\n\t\t\t{\n\t\t\t\treturn has_value_ ? &value_ : 0;\n\t\t\t}\n\n\t\t\tT const & value() const & noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & value() & noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT const && value() const && noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT value() && noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\tT tmp(std::move(value_));\n\t\t\t\treset();\n\t\t\t\treturn tmp;\n\t\t\t}\n\t\t};\n\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/optional.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/detail/print.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/print.hpp\"\n#ifndef BOOST_LEAF_3BAB50A2B87E11E89EEB30600C39171A\n#define BOOST_LEAF_3BAB50A2B87E11E89EEB30600C39171A\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tinline char const * check_prefix( char const * t, char const (&prefix)[N] )\n\t\t{\n\t\t\treturn std::strncmp(t,prefix,sizeof(prefix)-1)==0 ? t+sizeof(prefix)-1 : t;\n\t\t}\n\t}\n\n\ttemplate \n\tchar const * type() noexcept\n\t{\n\tchar const * t =\n#ifdef __FUNCSIG__\n\t\t__FUNCSIG__;\n#else\n\t\t__PRETTY_FUNCTION__;\n#endif\n#if defined(__clang__)\n\t\tassert(leaf_detail::check_prefix(t,\"const char *boost::leaf::type() \")==t+32);\n\t\treturn t+32;\n#elif defined(__GNUC__)\n\t\tassert(leaf_detail::check_prefix(t,\"const char* boost::leaf::type() \")==t+32);\n\t\treturn t+32;\n#else\n\t\tchar const * clang_style = leaf_detail::check_prefix(t,\"const char *boost::leaf::type() \");\n\t\tif( clang_style!=t )\n\t\t\treturn clang_style;\n\t\tchar const * gcc_style = leaf_detail::check_prefix(t,\"const char* boost::leaf::type() \");\n\t\tif( gcc_style!=t )\n\t\t\treturn gcc_style;\n#endif\n\t\treturn t;\n\t}\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct is_printable: std::false_type\n\t\t{\n\t\t};\n\n\t\ttemplate \n\t\tstruct is_printable()<(), void())>: std::true_type\n\t\t{\n\t\t};\n\n\t\t////////////////////////////////////////\n\n\t\ttemplate \n\t\tstruct has_printable_member_value: std::false_type\n\t\t{\n\t\t};\n\n\t\ttemplate \n\t\tstruct has_printable_member_value()<().value, void())>: std::true_type\n\t\t{\n\t\t};\n\n\t\t////////////////////////////////////////\n\n\t\ttemplate ::value, bool ValuePrintable=has_printable_member_value::value>\n\t\tstruct diagnostic;\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & x )\n\t\t\t{\n\t\t\t\tos << x;\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & x )\n\t\t\t{\n\t\t\t\tos << type() << \": \" << x.value;\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & )\n\t\t\t{\n\t\t\t\tos << type() << \": N/A\";\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, std::exception_ptr const & )\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/print.hpp\n//<<<<<<<<\n#include \n#include \n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\tclass id_factory\n\t\t{\n\t\t\tid_factory( id_factory const & ) = delete;\n\t\t\tid_factory & operator=( id_factory const & ) = delete;\n\n\t\t\tstatic int new_err_id() noexcept\n\t\t\t{\n\t\t\t\tstatic std::atomic c;\n\t\t\t\tif( unsigned id = ++c )\n\t\t\t\t\treturn int(id);\n\t\t\t\telse\n\t\t\t\t\treturn int(++c);\n\t\t\t}\n\n\t\t\tint next_id_;\n\t\t\tint last_id_;\n\n\t\t\tid_factory() noexcept:\n\t\t\t\tnext_id_(new_err_id()),\n\t\t\t\tlast_id_(next_id_-1)\n\t\t\t{\n\t\t\t}\n\n\t\tpublic:\n\n\t\t\tstatic id_factory & tl_instance() noexcept\n\t\t\t{\n\t\t\t\tstatic thread_local id_factory s;\n\t\t\t\treturn s;\n\t\t\t}\n\n\t\t\tint last_id() noexcept\n\t\t\t{\n\t\t\t\treturn last_id_;\n\t\t\t}\n\n\t\t\tint new_id() noexcept\n\t\t\t{\n\t\t\t\tint id = last_id_ = next_id_;\n\t\t\t\tnext_id_ = new_err_id();\n\t\t\t\treturn id;\n\t\t\t}\n\n\t\t\tint next_id() noexcept\n\t\t\t{\n\t\t\t\treturn next_id_;\n\t\t\t}\n\t\t};\n\n\t\tinline int last_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().last_id();\n\t\t}\n\n\t\tinline int new_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().new_id();\n\t\t}\n\n\t\tinline int next_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().next_id();\n\t\t}\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\tclass slot_base\n\t\t{\n\t\t\tslot_base( slot_base const & ) = delete;\n\t\t\tslot_base & operator=( slot_base const & ) = delete;\n\n\t\t\tvirtual bool slot_print( std::ostream &, int err_id ) const = 0;\n\n\t\tpublic:\n\n\t\t\tstatic void print( std::ostream & os, int err_id )\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t\tfor( slot_base const * p = first(); p; p=p->next_ )\n\t\t\t\t\tif( p->slot_print(os,err_id) )\n\t\t\t\t\t\tos << std::endl;\n\t\t\t}\n\n\t\tprotected:\n\n\t\t\tstatic slot_base const * & first() noexcept\n\t\t\t{\n\t\t\t\tstatic thread_local slot_base const * p = 0;\n\t\t\t\treturn p;\n\t\t\t}\n\n\t\t\tslot_base const * const next_;\n\n\t\t\tslot_base() noexcept:\n\t\t\t\tnext_(first())\n\t\t\t{\n\t\t\t\tfirst() = this;\n\t\t\t}\n\n\t\t\t~slot_base() noexcept\n\t\t\t{\n\t\t\t\tslot_base const * & p = first();\n\t\t\t\tassert(p==this);\n\t\t\t\tp = next_;\n\t\t\t}\n\t\t};\n\t}\n\n\t////////////////////////////////////////\n\n\tclass error_id;\n\tnamespace leaf_detail { class captured_exception; }\n\n\tclass error_info\n\t{\n\t\terror_info( error_info const & ) = delete;\n\t\terror_info & operator=( error_info const & ) = delete;\n\n\t\tint const err_id_;\n\t\tstd::exception const * const ex_;\n\t\tleaf_detail::captured_exception const * const cap_;\n\t\tvoid (* const print_ex_)( std::ostream &, std::exception const *, leaf_detail::captured_exception const * );\n\n\tpublic:\n\n\t\texplicit error_info( int err_id ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(0),\n\t\t\tcap_(0),\n\t\t\tprint_ex_(0)\n\t\t{\n\t\t}\n\n\t\terror_info( int err_id, std::exception const * ex, void (*print_ex)(std::ostream &, std::exception const *, leaf_detail::captured_exception const *) ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(ex),\n\t\t\tcap_(0),\n\t\t\tprint_ex_(print_ex)\n\t\t{\n\t\t\tassert(print_ex_!=0);\n\t\t}\n\n\t\terror_info( int err_id, std::exception const * ex, leaf_detail::captured_exception const * cap, void (*print_ex)(std::ostream &, std::exception const *, leaf_detail::captured_exception const *) ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(ex),\n\t\t\tcap_(cap),\n\t\t\tprint_ex_(print_ex)\n\t\t{\n\t\t\tassert(print_ex_!=0);\n\t\t}\n\n\t\tint err_id() const noexcept\n\t\t{\n\t\t\treturn err_id_;\n\t\t}\n\n\t\tbool has_error() const noexcept\n\t\t{\n\t\t\treturn err_id_!=0;\n\t\t}\n\n\t\terror_id error() const noexcept;\n\n\t\tbool has_exception() const noexcept\n\t\t{\n\t\t\treturn print_ex_!=0;\n\t\t}\n\n\t\tstd::exception const * exception() const noexcept\n\t\t{\n\t\t\tassert(has_exception());\n\t\t\treturn ex_;\n\t\t}\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, error_info const & x )\n\t\t{\n\t\t\tos << \"LEAF Error ID: \" << x.err_id_ << std::endl;\n\t\t\tif( x.print_ex_ )\n\t\t\t\tx.print_ex_(os,x.ex_,x.cap_);\n\t\t\tleaf_detail::slot_base::print(os,x.err_id_);\n\t\t\treturn os;\n\t\t}\n\t};\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct has_data_member_value\n\t\t{\n\t\t\tstatic constexpr bool value=false;\n\t\t};\n\n\t\ttemplate \n\t\tstruct has_data_member_value().value, void())>\n\t\t{\n\t\t\tstatic constexpr bool value=std::is_member_object_pointer::value;\n\t\t};\n\n\t\ttemplate \n\t\tstruct is_error_type_default\n\t\t{\n\t\t\tstatic constexpr bool value = has_data_member_value::value || std::is_base_of::value;\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\t}\n\n\ttemplate \n\tstruct is_error_type: leaf_detail::is_error_type_default\n\t{\n\t};\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\tclass monitor_base\n\t\t{\n\t\t\tmonitor_base( monitor_base const & ) = delete;\n\t\t\tmonitor_base & operator=( monitor_base const & ) = delete;\n\n\t\t\tmutable error_info const * ei_;\n\n\t\tprotected:\n\n\t\t\tmonitor_base() noexcept:\n\t\t\t\tei_(0)\n\t\t\t{\n\t\t\t}\n\n\t\t\tmonitor_base( monitor_base && x ) noexcept:\n\t\t\t\tei_(0)\n\t\t\t{\n\t\t\t\tx.ei_ = 0;\n\t\t\t}\n\n\t\t\tvoid set_error_info( error_info const & ei ) const noexcept\n\t\t\t{\n\t\t\t\tei_ = &ei;\n\t\t\t}\n\n\t\t\terror_info const & get_error_info() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn *ei_;\n\t\t\t}\n\n\t\tpublic:\n\n\t\t\tbool has_error() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->has_error();\n\t\t\t}\n\n\t\t\terror_id error() const noexcept;\n\n\t\t\tbool has_exception() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->has_exception();\n\t\t\t}\n\n\t\t\tstd::exception const * exception() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->exception();\n\t\t\t}\n\t\t};\n\t}\n\n\tclass diagnostic_info: leaf_detail::monitor_base\n\t{\n\tpublic:\n\n\t\tchar const * (*first_type)();\n\t\tint count;\n\n\t\texplicit diagnostic_info( char const * (*first_type)() ) noexcept:\n\t\t\tfirst_type(first_type),\n\t\t\tcount(1)\n\t\t{\n\t\t}\n\n\t\tusing monitor_base::set_error_info;\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, diagnostic_info const & x )\n\t\t{\n\t\t\tassert(x.first_type!=0);\n\t\t\tassert(x.count>0);\n\t\t\tos << x.get_error_info() << \"diagnostic_info: Detected \";\n\t\t\tif( x.count==1 )\n\t\t\t\tos << \"1 attempt to communicate an E-object\";\n\t\t\telse\n\t\t\t\tos << x.count << \" attempts to communicate unexpected E-objects, the first one\";\n\t\t\treturn os << \" of type \" << x.first_type() << std::endl;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, diagnostic_info const & ) noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t}\n\n\tclass verbose_diagnostic_info: leaf_detail::monitor_base\n\t{\n\t\tstd::string s_;\n\t\tstd::set already_;\n\n\tpublic:\n\n\t\tverbose_diagnostic_info() noexcept\n\t\t{\n\t\t}\n\n\t\tusing monitor_base::set_error_info;\n\n\t\tvoid reset() noexcept\n\t\t{\n\t\t\ts_.clear();\n\t\t\talready_.clear();\n\t\t}\n\n\t\ttemplate \n\t\tvoid add( E const & e )\n\t\t{\n\t\t\tstd::stringstream s;\n\t\t\tif( leaf_detail::diagnostic::print(s,e) && already_.insert(&type).second )\n\t\t\t{\n\t\t\t\ts << std::endl;\n\t\t\t\ts_ += s.str();\n\t\t\t}\n\t\t}\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, verbose_diagnostic_info const & x )\n\t\t{\n\t\t\tos <<\n\t\t\t\tx.get_error_info() <<\n\t\t\t\t\"verbose_diagnostic_info:\" << std::endl <<\n\t\t\t\tx.s_;\n\t\t\treturn os;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, verbose_diagnostic_info const & ) noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct id_e_pair\n\t\t{\n\t\t\tint err_id;\n\t\t\tE e;\n\n\t\t\texplicit id_e_pair( int err_id ) noexcept:\n\t\t\t\terr_id(err_id)\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\n\t\t\tid_e_pair( int err_id, E const & e ):\n\t\t\t\terr_id(err_id),\n\t\t\t\te(e)\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\n\t\t\tid_e_pair( int err_id, E && e ) noexcept:\n\t\t\t\terr_id(err_id),\n\t\t\t\te(std::forward(e))\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\t\t};\n\n\t\tinline int & tl_unexpected_enabled_counter() noexcept\n\t\t{\n\t\t\tstatic thread_local int c;\n\t\t\treturn c;\n\t\t}\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tclass slot:\n\t\t\tslot_base,\n\t\t\toptional>\n\t\t{\n\t\t\tslot( slot const & ) = delete;\n\t\t\tslot & operator=( slot const & ) = delete;\n\t\t\ttypedef optional> base;\n\t\t\tslot * prev_;\n\t\t\tstatic_assert(is_error_type::value,\"Not an error type\");\n\n\t\t\tbool slot_print( std::ostream &, int err_id ) const;\n\n\t\tprotected:\n\n\t\t\tslot() noexcept;\n\t\t\t~slot() noexcept;\n\n\t\tpublic:\n\n\t\t\tusing base::put;\n\t\t\tusing base::has_value;\n\t\t\tusing base::value;\n\t\t\tusing base::reset;\n\t\t\tusing base::emplace;\n\t\t};\n\n\t\ttemplate \n\t\tslot * & tl_slot_ptr() noexcept\n\t\t{\n\t\t\tstatic thread_local slot * s;\n\t\t\treturn s;\n\t\t}\n\n\t\ttemplate \n\t\tvoid put_unexpected( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tif( slot * p = tl_slot_ptr() )\n\t\t\t{\n\t\t\t\tif( p->has_value() )\n\t\t\t\t{\n\t\t\t\t\tauto & p_id_e = p->value();\n\t\t\t\t\tif( p_id_e.err_id==id_e.err_id )\n\t\t\t\t\t{\n\t\t\t\t\t\t++p_id_e.e.count;\n\t\t\t\t\t\treturn;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\t(void) p->put( id_e_pair(id_e.err_id,diagnostic_info(&type)) );\n\t\t\t}\n\t\t}\n\n\t\ttemplate \n\t\tvoid put_verbose_diagnostic_info( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tif( slot * sl = tl_slot_ptr() )\n\t\t\t{\n\t\t\t\tif( auto * pv = sl->has_value() )\n\t\t\t\t{\n\t\t\t\t\tif( pv->err_id!=id_e.err_id )\n\t\t\t\t\t{\n\t\t\t\t\t\tpv->err_id = id_e.err_id;\n\t\t\t\t\t\tpv->e.reset();\n\t\t\t\t\t}\n\t\t\t\t\tpv->e.add(id_e.e);\n\t\t\t\t}\n\t\t\t\telse\n\t\t\t\t\tsl->emplace(id_e.err_id).e.add(id_e.e);\n\t\t\t}\n\t\t}\n\n\t\ttemplate \n\t\tvoid no_expect_slot( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tput_unexpected(id_e);\n\t\t\tput_verbose_diagnostic_info(id_e);\n\t\t}\n\n\t\ttemplate \n\t\tint put_slot( int err_id, E && e ) noexcept\n\t\t{\n\t\t\tusing T = typename std::remove_cv::type>::type;\n\t\t\tassert(err_id);\n\t\t\tif( slot * p = tl_slot_ptr() )\n\t\t\t\t(void) p->put( id_e_pair(err_id,std::forward(e)) );\n\t\t\telse\n\t\t\t{\n\t\t\t\tint c = tl_unexpected_enabled_counter();\n\t\t\t\tassert(c>=0);\n\t\t\t\tif( c )\n\t\t\t\t\tno_expect_slot( id_e_pair(err_id,std::forward(e)) );\n\t\t\t}\n\t\t\treturn 0;\n\t\t}\n\n\t\ttemplate \n\t\tslot::slot() noexcept\n\t\t{\n\t\t\tslot * & p = tl_slot_ptr();\n\t\t\tprev_ = p;\n\t\t\tp = this;\n\t\t}\n\n\t\ttemplate \n\t\tslot::~slot() noexcept\n\t\t{\n\t\t\tif( prev_ )\n\t\t\t{\n\t\t\t\toptional> & p = *prev_;\n\t\t\t\tp = std::move(*this);\n\t\t\t}\n\t\t\telse\n\t\t\t{\n\t\t\t\tint c = tl_unexpected_enabled_counter();\n\t\t\t\tassert(c>=0);\n\t\t\t\tif( c && has_value() )\n\t\t\t\t\tno_expect_slot(value());\n\t\t\t}\n\t\t\ttl_slot_ptr() = prev_;\n\t\t}\n\n\t\ttemplate \n\t\tbool slot::slot_print( std::ostream & os, int err_id ) const\n\t\t{\n\t\t\tassert(err_id);\n\t\t\tif( tl_slot_ptr()==this )\n\t\t\t\tif( id_e_pair const * id_e = has_value() )\n\t\t\t\t\tif( id_e->err_id==err_id )\n\t\t\t\t\t\treturn diagnostice)>::print(os,id_e->e);\n\t\t\treturn false;\n\t\t}\n\n\t\tenum class result_variant\n\t\t{\n\t\t\tvalue,\n\t\t\terr_id,\n\t\t\tcap\n\t\t};\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/teleport.hpp\n//<<<<<<<<\n#include \n\n#define LEAF_ERROR(...) ::boost::leaf::leaf_detail::new_error_at(__FILE__,__LINE__,__FUNCTION__,__VA_ARGS__)\n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\tclass error_category: public std::error_category\n\t\t{\n\t\t\tbool equivalent( int, std::error_condition const & ) const noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\tbool equivalent( std::error_code const &, int ) const noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\tchar const * name() const noexcept\n\t\t\t{\n\t\t\t\treturn \"LEAF error, use with leaf::handle_some or leaf::handle_all.\";\n\t\t\t}\n\n\t\t\tstd::string message( int condition ) const\n\t\t\t{\n\t\t\t\treturn name();\n\t\t\t}\n\t\t};\n\n\t\tinline error_category const & get_error_category() noexcept\n\t\t{\n\t\t\tstatic error_category cat;\n\t\t\treturn cat;\n\t\t}\n\t}\n\n\tinline bool is_error_id( std::error_code const & ec )\n\t{\n\t\treturn &ec.category() == &leaf_detail::get_error_category();\n\t}\n\n\t////////////////////////////////////////\n\n\tstruct e_original_ec { std::error_code value; };\n\n\tclass error_id: public std::error_code\n\t{\n\t\ttemplate \n\t\tstatic std::error_code import( ErrorCode && ec ) noexcept\n\t\t{\n\t\t\tstd::error_category const & cat = leaf_detail::get_error_category();\n\t\t\tif( ec && &ec.category()!=&cat )\n\t\t\t{\n\t\t\t\tint err_id = leaf_detail::new_id();\n\t\t\t\tleaf_detail::put_slot(err_id, e_original_ec{ec});\n\t\t\t\treturn std::error_code(err_id, cat);\n\t\t\t}\n\t\t\telse\n\t\t\t\treturn ec;\n\t\t}\n\n\tpublic:\n\n\t\terror_id() noexcept = default;\n\n\t\ttemplate \n\t\terror_id( std::error_code const & ec, E && ... e ) noexcept:\n\t\t\terror_code(import(ec))\n\t\t{\n\t\t\t(void) propagate(std::forward(e)...);\n\t\t}\n\n\t\ttemplate \n\t\terror_id( std::error_code && ec, E && ... e ) noexcept:\n\t\t\terror_code(import(std::move(ec)))\n\t\t{\n\t\t\t(void) propagate(std::forward(e)...);\n\t\t}\n\n\t\terror_id propagate() const noexcept\n\t\t{\n\t\t\tassert(is_error_id(*this));\n\t\t\treturn *this;\n\t\t}\n\n\t\ttemplate \n\t\terror_id propagate( E && ... e ) const noexcept\n\t\t{\n\t\t\tassert(is_error_id(*this));\n\t\t\tauto _ = { leaf_detail::put_slot(value(), std::forward(e))... };\n\t\t\t(void) _;\n\t\t\treturn *this;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\tinline error_id make_error( int err_id )\n\t\t{\n\t\t\tassert(err_id);\n\t\t\treturn error_id(std::error_code(err_id, get_error_category()));\n\t\t}\n\t}\n\n\ttemplate \n\terror_id new_error( E && ... e ) noexcept\n\t{\n\t\treturn leaf_detail::make_error(leaf_detail::new_id()).propagate(std::forward(e)...);\n\t}\n\n\tinline error_id next_error() noexcept\n\t{\n\t\treturn leaf_detail::make_error(leaf_detail::next_id());\n\t}\n\n\tinline error_id error_info::error() const noexcept\n\t{\n\t\tassert(has_error());\n\t\treturn leaf_detail::make_error(err_id_);\n\t}\n\n\tinline error_id leaf_detail::monitor_base::error() const noexcept\n\t{\n\t\tassert(ei_!=0);\n\t\treturn ei_->error();\n\t}\n\n\t////////////////////////////////////////\n\n\tstruct e_source_location\n\t{\n\t\tchar const * const file;\n\t\tint const line;\n\t\tchar const * const function;\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, e_source_location const & x )\n\t\t{\n\t\t\treturn os << leaf::type() << \": \" << x.file << '(' << x.line << \") in function \" << x.function;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <> struct is_error_type_default: std::true_type { };\n\n\t\ttemplate \n\t\terror_id new_error_at( char const * file, int line, char const * function, E && ... e ) noexcept\n\t\t{\n\t\t\tassert(file&&*file);\n\t\t\tassert(line>0);\n\t\t\tassert(function&&*function);\n\t\t\te_source_location sl { file, line, function }; // Temp object MSVC workaround\n\t\t\treturn new_error( std::move(sl), std::forward(e)... );\n\t\t}\n\t}\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/error.hpp\n//<<<<<<<<\n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail {\n\t\tinline int handle_get_err_id( error_id const & err ) noexcept\n\t\t{\n\t\t\treturn err.value();\n\t\t}\n\t\tinline int handle_get_err_id( std::error_code const & ec ) noexcept\n\t\t{\n\t\t\treturn is_error_id(ec) ? ec.value() : 0;\n\t\t}\n\t}\n\n\ttemplate \n\ttypename std::remove_reference()().value())>::type handle_all( TryBlock && try_block, Handler && ... handler )\n\t{\n\t\tusing namespace leaf_detail;\n\t\ttypename deduce_static_store::type>::type ss;\n\t\tss.set_reset(true);\n\t\tif( auto r = std::forward(try_block)() )\n\t\t\treturn r.value();\n\t\telse\n\t\t\treturn ss.handle_error(error_info(handle_get_err_id(r.error())), &r, std::forward(handler)...);\n\t}\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate ::return_type, class=typename function_traits::mp_args>\n\t\tstruct handler_wrapper;\n\n\t\ttemplate class L, class... A>\n\t\tstruct handler_wrapper>\n\t\t{\n\t\t\tF f_;\n\t\t\texplicit handler_wrapper( F && f ) noexcept:\n\t\t\t\tf_(std::forward(f))\n\t\t\t{\n\t\t\t}\n\t\t\tTryReturn operator()( A... a ) const\n\t\t\t{\n\t\t\t\treturn f_(std::forward (a)...);\n\t\t\t}\n\t\t};\n\n\t\ttemplate class L, class... A>\n\t\tstruct handler_wrapper>\n\t\t{\n\t\t\tF f_;\n\t\t\texplicit handler_wrapper( F && f ) noexcept:\n\t\t\t\tf_(std::forward(f))\n\t\t\t{\n\t\t\t}\n\t\t\tTryReturn operator()( A... a ) const\n\t\t\t{\n\t\t\t\tf_(std::forward (a)...);\n\t\t\t\treturn { };\n\t\t\t}\n\t\t};\n\t}\n\n\ttemplate \n\tdecltype(std::declval()()) handle_some( TryBlock && try_block, Handler && ... handler )\n\t{\n\t\tusing namespace leaf_detail;\n\t\tusing R = decltype(std::declval()());\n\t\ttypename deduce_static_store::type>::type ss;\n\t\tif( auto r = std::forward(try_block)() )\n\t\t{\n\t\t\tss.set_reset(true);\n\t\t\treturn r;\n\t\t}\n\t\telse\n\t\t{\n\t\t\tauto rr = ss.handle_error(error_info(handle_get_err_id(r.error())), &r, handler_wrapper(std::forward(handler))..., [&r] { return r; } );\n\t\t\tif( rr )\n\t\t\t\tss.set_reset(true);\n\t\t\treturn rr;\n\t\t}\n\t}\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/handle.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/preload.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/preload.hpp\"\n#ifndef BOOST_LEAF_25AF99F6DC6F11E8803DE9BC9723C688\n#define BOOST_LEAF_25AF99F6DC6F11E8803DE9BC9723C688\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/detail/teleport.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/teleport.hpp\"\n#ifndef BOOST_LEAF_B449A5821DA411E99B9A012588D1CC0E\n#define BOOST_LEAF_B449A5821DA411E99B9A012588D1CC0E\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/detail/optional.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/optional.hpp\"\n#ifndef BOOST_LEAF_47258FCCB6B411E8A1F35AA00C39171A\n#define BOOST_LEAF_47258FCCB6B411E8A1F35AA00C39171A\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tclass optional\n\t\t{\n\t\t\tunion { T value_; };\n\t\t\tbool has_value_;\n\n\t\tpublic:\n\n\t\t\ttypedef T value_type;\n\t\t\toptional() noexcept:\n\t\t\t\thas_value_(false)\n\t\t\t{\n\t\t\t}\n\n\t\t\toptional( optional const & x ):\n\t\t\t\thas_value_(x.has_value_)\n\t\t\t{\n\t\t\t\tif( x.has_value_ )\n\t\t\t\t\t(void) new (&value_) T( x.value_ );\n\t\t\t}\n\n\t\t\toptional( optional && x ) noexcept:\n\t\t\t\thas_value_(x.has_value_)\n\t\t\t{\n\t\t\t\tif( x.has_value_ )\n\t\t\t\t{\n\t\t\t\t\t(void) new (&value_) T( std::move(x.value_) );\n\t\t\t\t\tx.value_.~T();\n\t\t\t\t\tx.has_value_ = false;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\toptional( T const & v ):\n\t\t\t\tvalue_(v),\n\t\t\t\thas_value_(true)\n\t\t\t{\n\t\t\t}\n\n\t\t\toptional( T && v ) noexcept:\n\t\t\t\tvalue_(std::move(v)),\n\t\t\t\thas_value_(true)\n\t\t\t{\n\t\t\t}\n\n\t\t\toptional & operator=( optional const & x )\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\tif( x.has_value() )\n\t\t\t\t\tput(x.value());\n\t\t\t\treturn *this;\n\t\t\t}\n\n\t\t\toptional & operator=( optional && x ) noexcept\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\tif( x.has_value() )\n\t\t\t\t\tput(std::move(x).value());\n\t\t\t\treturn *this;\n\t\t\t}\n\n\t\t\t~optional() noexcept\n\t\t\t{\n\t\t\t\treset();\n\t\t\t}\n\n\t\t\tvoid reset() noexcept\n\t\t\t{\n\t\t\t\tif( has_value() )\n\t\t\t\t{\n\t\t\t\t\tvalue_.~T();\n\t\t\t\t\thas_value_=false;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\ttemplate \n\t\t\tT & emplace( A && ... a )\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(std::forward (a)...);\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & put( T const & v )\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(v);\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & put( T && v ) noexcept\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(std::move(v));\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT const * has_value() const noexcept\n\t\t\t{\n\t\t\t\treturn has_value_ ? &value_ : 0;\n\t\t\t}\n\n\t\t\tT * has_value() noexcept\n\t\t\t{\n\t\t\t\treturn has_value_ ? &value_ : 0;\n\t\t\t}\n\n\t\t\tT const & value() const & noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & value() & noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT const && value() const && noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT value() && noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\tT tmp(std::move(value_));\n\t\t\t\treset();\n\t\t\t\treturn tmp;\n\t\t\t}\n\t\t};\n\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/optional.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/detail/print.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/print.hpp\"\n#ifndef BOOST_LEAF_3BAB50A2B87E11E89EEB30600C39171A\n#define BOOST_LEAF_3BAB50A2B87E11E89EEB30600C39171A\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tinline char const * check_prefix( char const * t, char const (&prefix)[N] )\n\t\t{\n\t\t\treturn std::strncmp(t,prefix,sizeof(prefix)-1)==0 ? t+sizeof(prefix)-1 : t;\n\t\t}\n\t}\n\n\ttemplate \n\tchar const * type() noexcept\n\t{\n\tchar const * t =\n#ifdef __FUNCSIG__\n\t\t__FUNCSIG__;\n#else\n\t\t__PRETTY_FUNCTION__;\n#endif\n#if defined(__clang__)\n\t\tassert(leaf_detail::check_prefix(t,\"const char *boost::leaf::type() \")==t+32);\n\t\treturn t+32;\n#elif defined(__GNUC__)\n\t\tassert(leaf_detail::check_prefix(t,\"const char* boost::leaf::type() \")==t+32);\n\t\treturn t+32;\n#else\n\t\tchar const * clang_style = leaf_detail::check_prefix(t,\"const char *boost::leaf::type() \");\n\t\tif( clang_style!=t )\n\t\t\treturn clang_style;\n\t\tchar const * gcc_style = leaf_detail::check_prefix(t,\"const char* boost::leaf::type() \");\n\t\tif( gcc_style!=t )\n\t\t\treturn gcc_style;\n#endif\n\t\treturn t;\n\t}\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct is_printable: std::false_type\n\t\t{\n\t\t};\n\n\t\ttemplate \n\t\tstruct is_printable()<(), void())>: std::true_type\n\t\t{\n\t\t};\n\n\t\t////////////////////////////////////////\n\n\t\ttemplate \n\t\tstruct has_printable_member_value: std::false_type\n\t\t{\n\t\t};\n\n\t\ttemplate \n\t\tstruct has_printable_member_value()<().value, void())>: std::true_type\n\t\t{\n\t\t};\n\n\t\t////////////////////////////////////////\n\n\t\ttemplate ::value, bool ValuePrintable=has_printable_member_value::value>\n\t\tstruct diagnostic;\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & x )\n\t\t\t{\n\t\t\t\tos << x;\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & x )\n\t\t\t{\n\t\t\t\tos << type() << \": \" << x.value;\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & )\n\t\t\t{\n\t\t\t\tos << type() << \": N/A\";\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, std::exception_ptr const & )\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/print.hpp\n//<<<<<<<<\n#include \n#include \n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\tclass id_factory\n\t\t{\n\t\t\tid_factory( id_factory const & ) = delete;\n\t\t\tid_factory & operator=( id_factory const & ) = delete;\n\n\t\t\tstatic int new_err_id() noexcept\n\t\t\t{\n\t\t\t\tstatic std::atomic c;\n\t\t\t\tif( unsigned id = ++c )\n\t\t\t\t\treturn int(id);\n\t\t\t\telse\n\t\t\t\t\treturn int(++c);\n\t\t\t}\n\n\t\t\tint next_id_;\n\t\t\tint last_id_;\n\n\t\t\tid_factory() noexcept:\n\t\t\t\tnext_id_(new_err_id()),\n\t\t\t\tlast_id_(next_id_-1)\n\t\t\t{\n\t\t\t}\n\n\t\tpublic:\n\n\t\t\tstatic id_factory & tl_instance() noexcept\n\t\t\t{\n\t\t\t\tstatic thread_local id_factory s;\n\t\t\t\treturn s;\n\t\t\t}\n\n\t\t\tint last_id() noexcept\n\t\t\t{\n\t\t\t\treturn last_id_;\n\t\t\t}\n\n\t\t\tint new_id() noexcept\n\t\t\t{\n\t\t\t\tint id = last_id_ = next_id_;\n\t\t\t\tnext_id_ = new_err_id();\n\t\t\t\treturn id;\n\t\t\t}\n\n\t\t\tint next_id() noexcept\n\t\t\t{\n\t\t\t\treturn next_id_;\n\t\t\t}\n\t\t};\n\n\t\tinline int last_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().last_id();\n\t\t}\n\n\t\tinline int new_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().new_id();\n\t\t}\n\n\t\tinline int next_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().next_id();\n\t\t}\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\tclass slot_base\n\t\t{\n\t\t\tslot_base( slot_base const & ) = delete;\n\t\t\tslot_base & operator=( slot_base const & ) = delete;\n\n\t\t\tvirtual bool slot_print( std::ostream &, int err_id ) const = 0;\n\n\t\tpublic:\n\n\t\t\tstatic void print( std::ostream & os, int err_id )\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t\tfor( slot_base const * p = first(); p; p=p->next_ )\n\t\t\t\t\tif( p->slot_print(os,err_id) )\n\t\t\t\t\t\tos << std::endl;\n\t\t\t}\n\n\t\tprotected:\n\n\t\t\tstatic slot_base const * & first() noexcept\n\t\t\t{\n\t\t\t\tstatic thread_local slot_base const * p = 0;\n\t\t\t\treturn p;\n\t\t\t}\n\n\t\t\tslot_base const * const next_;\n\n\t\t\tslot_base() noexcept:\n\t\t\t\tnext_(first())\n\t\t\t{\n\t\t\t\tfirst() = this;\n\t\t\t}\n\n\t\t\t~slot_base() noexcept\n\t\t\t{\n\t\t\t\tslot_base const * & p = first();\n\t\t\t\tassert(p==this);\n\t\t\t\tp = next_;\n\t\t\t}\n\t\t};\n\t}\n\n\t////////////////////////////////////////\n\n\tclass error_id;\n\tnamespace leaf_detail { class captured_exception; }\n\n\tclass error_info\n\t{\n\t\terror_info( error_info const & ) = delete;\n\t\terror_info & operator=( error_info const & ) = delete;\n\n\t\tint const err_id_;\n\t\tstd::exception const * const ex_;\n\t\tleaf_detail::captured_exception const * const cap_;\n\t\tvoid (* const print_ex_)( std::ostream &, std::exception const *, leaf_detail::captured_exception const * );\n\n\tpublic:\n\n\t\texplicit error_info( int err_id ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(0),\n\t\t\tcap_(0),\n\t\t\tprint_ex_(0)\n\t\t{\n\t\t}\n\n\t\terror_info( int err_id, std::exception const * ex, void (*print_ex)(std::ostream &, std::exception const *, leaf_detail::captured_exception const *) ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(ex),\n\t\t\tcap_(0),\n\t\t\tprint_ex_(print_ex)\n\t\t{\n\t\t\tassert(print_ex_!=0);\n\t\t}\n\n\t\terror_info( int err_id, std::exception const * ex, leaf_detail::captured_exception const * cap, void (*print_ex)(std::ostream &, std::exception const *, leaf_detail::captured_exception const *) ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(ex),\n\t\t\tcap_(cap),\n\t\t\tprint_ex_(print_ex)\n\t\t{\n\t\t\tassert(print_ex_!=0);\n\t\t}\n\n\t\tint err_id() const noexcept\n\t\t{\n\t\t\treturn err_id_;\n\t\t}\n\n\t\tbool has_error() const noexcept\n\t\t{\n\t\t\treturn err_id_!=0;\n\t\t}\n\n\t\terror_id error() const noexcept;\n\n\t\tbool has_exception() const noexcept\n\t\t{\n\t\t\treturn print_ex_!=0;\n\t\t}\n\n\t\tstd::exception const * exception() const noexcept\n\t\t{\n\t\t\tassert(has_exception());\n\t\t\treturn ex_;\n\t\t}\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, error_info const & x )\n\t\t{\n\t\t\tos << \"LEAF Error ID: \" << x.err_id_ << std::endl;\n\t\t\tif( x.print_ex_ )\n\t\t\t\tx.print_ex_(os,x.ex_,x.cap_);\n\t\t\tleaf_detail::slot_base::print(os,x.err_id_);\n\t\t\treturn os;\n\t\t}\n\t};\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct has_data_member_value\n\t\t{\n\t\t\tstatic constexpr bool value=false;\n\t\t};\n\n\t\ttemplate \n\t\tstruct has_data_member_value().value, void())>\n\t\t{\n\t\t\tstatic constexpr bool value=std::is_member_object_pointer::value;\n\t\t};\n\n\t\ttemplate \n\t\tstruct is_error_type_default\n\t\t{\n\t\t\tstatic constexpr bool value = has_data_member_value::value || std::is_base_of::value;\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\t}\n\n\ttemplate \n\tstruct is_error_type: leaf_detail::is_error_type_default\n\t{\n\t};\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\tclass monitor_base\n\t\t{\n\t\t\tmonitor_base( monitor_base const & ) = delete;\n\t\t\tmonitor_base & operator=( monitor_base const & ) = delete;\n\n\t\t\tmutable error_info const * ei_;\n\n\t\tprotected:\n\n\t\t\tmonitor_base() noexcept:\n\t\t\t\tei_(0)\n\t\t\t{\n\t\t\t}\n\n\t\t\tmonitor_base( monitor_base && x ) noexcept:\n\t\t\t\tei_(0)\n\t\t\t{\n\t\t\t\tx.ei_ = 0;\n\t\t\t}\n\n\t\t\tvoid set_error_info( error_info const & ei ) const noexcept\n\t\t\t{\n\t\t\t\tei_ = &ei;\n\t\t\t}\n\n\t\t\terror_info const & get_error_info() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn *ei_;\n\t\t\t}\n\n\t\tpublic:\n\n\t\t\tbool has_error() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->has_error();\n\t\t\t}\n\n\t\t\terror_id error() const noexcept;\n\n\t\t\tbool has_exception() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->has_exception();\n\t\t\t}\n\n\t\t\tstd::exception const * exception() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->exception();\n\t\t\t}\n\t\t};\n\t}\n\n\tclass diagnostic_info: leaf_detail::monitor_base\n\t{\n\tpublic:\n\n\t\tchar const * (*first_type)();\n\t\tint count;\n\n\t\texplicit diagnostic_info( char const * (*first_type)() ) noexcept:\n\t\t\tfirst_type(first_type),\n\t\t\tcount(1)\n\t\t{\n\t\t}\n\n\t\tusing monitor_base::set_error_info;\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, diagnostic_info const & x )\n\t\t{\n\t\t\tassert(x.first_type!=0);\n\t\t\tassert(x.count>0);\n\t\t\tos << x.get_error_info() << \"diagnostic_info: Detected \";\n\t\t\tif( x.count==1 )\n\t\t\t\tos << \"1 attempt to communicate an E-object\";\n\t\t\telse\n\t\t\t\tos << x.count << \" attempts to communicate unexpected E-objects, the first one\";\n\t\t\treturn os << \" of type \" << x.first_type() << std::endl;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, diagnostic_info const & ) noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t}\n\n\tclass verbose_diagnostic_info: leaf_detail::monitor_base\n\t{\n\t\tstd::string s_;\n\t\tstd::set already_;\n\n\tpublic:\n\n\t\tverbose_diagnostic_info() noexcept\n\t\t{\n\t\t}\n\n\t\tusing monitor_base::set_error_info;\n\n\t\tvoid reset() noexcept\n\t\t{\n\t\t\ts_.clear();\n\t\t\talready_.clear();\n\t\t}\n\n\t\ttemplate \n\t\tvoid add( E const & e )\n\t\t{\n\t\t\tstd::stringstream s;\n\t\t\tif( leaf_detail::diagnostic::print(s,e) && already_.insert(&type).second )\n\t\t\t{\n\t\t\t\ts << std::endl;\n\t\t\t\ts_ += s.str();\n\t\t\t}\n\t\t}\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, verbose_diagnostic_info const & x )\n\t\t{\n\t\t\tos <<\n\t\t\t\tx.get_error_info() <<\n\t\t\t\t\"verbose_diagnostic_info:\" << std::endl <<\n\t\t\t\tx.s_;\n\t\t\treturn os;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, verbose_diagnostic_info const & ) noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct id_e_pair\n\t\t{\n\t\t\tint err_id;\n\t\t\tE e;\n\n\t\t\texplicit id_e_pair( int err_id ) noexcept:\n\t\t\t\terr_id(err_id)\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\n\t\t\tid_e_pair( int err_id, E const & e ):\n\t\t\t\terr_id(err_id),\n\t\t\t\te(e)\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\n\t\t\tid_e_pair( int err_id, E && e ) noexcept:\n\t\t\t\terr_id(err_id),\n\t\t\t\te(std::forward(e))\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\t\t};\n\n\t\tinline int & tl_unexpected_enabled_counter() noexcept\n\t\t{\n\t\t\tstatic thread_local int c;\n\t\t\treturn c;\n\t\t}\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tclass slot:\n\t\t\tslot_base,\n\t\t\toptional>\n\t\t{\n\t\t\tslot( slot const & ) = delete;\n\t\t\tslot & operator=( slot const & ) = delete;\n\t\t\ttypedef optional> base;\n\t\t\tslot * prev_;\n\t\t\tstatic_assert(is_error_type::value,\"Not an error type\");\n\n\t\t\tbool slot_print( std::ostream &, int err_id ) const;\n\n\t\tprotected:\n\n\t\t\tslot() noexcept;\n\t\t\t~slot() noexcept;\n\n\t\tpublic:\n\n\t\t\tusing base::put;\n\t\t\tusing base::has_value;\n\t\t\tusing base::value;\n\t\t\tusing base::reset;\n\t\t\tusing base::emplace;\n\t\t};\n\n\t\ttemplate \n\t\tslot * & tl_slot_ptr() noexcept\n\t\t{\n\t\t\tstatic thread_local slot * s;\n\t\t\treturn s;\n\t\t}\n\n\t\ttemplate \n\t\tvoid put_unexpected( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tif( slot * p = tl_slot_ptr() )\n\t\t\t{\n\t\t\t\tif( p->has_value() )\n\t\t\t\t{\n\t\t\t\t\tauto & p_id_e = p->value();\n\t\t\t\t\tif( p_id_e.err_id==id_e.err_id )\n\t\t\t\t\t{\n\t\t\t\t\t\t++p_id_e.e.count;\n\t\t\t\t\t\treturn;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\t(void) p->put( id_e_pair(id_e.err_id,diagnostic_info(&type)) );\n\t\t\t}\n\t\t}\n\n\t\ttemplate \n\t\tvoid put_verbose_diagnostic_info( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tif( slot * sl = tl_slot_ptr() )\n\t\t\t{\n\t\t\t\tif( auto * pv = sl->has_value() )\n\t\t\t\t{\n\t\t\t\t\tif( pv->err_id!=id_e.err_id )\n\t\t\t\t\t{\n\t\t\t\t\t\tpv->err_id = id_e.err_id;\n\t\t\t\t\t\tpv->e.reset();\n\t\t\t\t\t}\n\t\t\t\t\tpv->e.add(id_e.e);\n\t\t\t\t}\n\t\t\t\telse\n\t\t\t\t\tsl->emplace(id_e.err_id).e.add(id_e.e);\n\t\t\t}\n\t\t}\n\n\t\ttemplate \n\t\tvoid no_expect_slot( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tput_unexpected(id_e);\n\t\t\tput_verbose_diagnostic_info(id_e);\n\t\t}\n\n\t\ttemplate \n\t\tint put_slot( int err_id, E && e ) noexcept\n\t\t{\n\t\t\tusing T = typename std::remove_cv::type>::type;\n\t\t\tassert(err_id);\n\t\t\tif( slot * p = tl_slot_ptr() )\n\t\t\t\t(void) p->put( id_e_pair(err_id,std::forward(e)) );\n\t\t\telse\n\t\t\t{\n\t\t\t\tint c = tl_unexpected_enabled_counter();\n\t\t\t\tassert(c>=0);\n\t\t\t\tif( c )\n\t\t\t\t\tno_expect_slot( id_e_pair(err_id,std::forward(e)) );\n\t\t\t}\n\t\t\treturn 0;\n\t\t}\n\n\t\ttemplate \n\t\tslot::slot() noexcept\n\t\t{\n\t\t\tslot * & p = tl_slot_ptr();\n\t\t\tprev_ = p;\n\t\t\tp = this;\n\t\t}\n\n\t\ttemplate \n\t\tslot::~slot() noexcept\n\t\t{\n\t\t\tif( prev_ )\n\t\t\t{\n\t\t\t\toptional> & p = *prev_;\n\t\t\t\tp = std::move(*this);\n\t\t\t}\n\t\t\telse\n\t\t\t{\n\t\t\t\tint c = tl_unexpected_enabled_counter();\n\t\t\t\tassert(c>=0);\n\t\t\t\tif( c && has_value() )\n\t\t\t\t\tno_expect_slot(value());\n\t\t\t}\n\t\t\ttl_slot_ptr() = prev_;\n\t\t}\n\n\t\ttemplate \n\t\tbool slot::slot_print( std::ostream & os, int err_id ) const\n\t\t{\n\t\t\tassert(err_id);\n\t\t\tif( tl_slot_ptr()==this )\n\t\t\t\tif( id_e_pair const * id_e = has_value() )\n\t\t\t\t\tif( id_e->err_id==err_id )\n\t\t\t\t\t\treturn diagnostice)>::print(os,id_e->e);\n\t\t\treturn false;\n\t\t}\n\n\t\tenum class result_variant\n\t\t{\n\t\t\tvalue,\n\t\t\terr_id,\n\t\t\tcap\n\t\t};\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/teleport.hpp\n//<<<<<<<<\n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct tuple_for_each_preload\n\t\t{\n\t\t\tstatic void trigger( Tuple & tup, int err_id ) noexcept\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t\ttuple_for_each_preload::trigger(tup,err_id);\n\t\t\t\tstd::get(tup).trigger(err_id);\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct tuple_for_each_preload<0, Tuple>\n\t\t{\n\t\t\tstatic void trigger( Tuple const &, int ) noexcept { }\n\t\t};\n\t} // leaf_detail\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tclass preloaded_item\n\t\t{\n\t\t\tslot * s_;\n\t\t\tE e_;\n\n\t\tpublic:\n\n\t\t\texplicit preloaded_item( E && e ) noexcept:\n\t\t\t\ts_(tl_slot_ptr()),\n\t\t\t\te_(std::forward(e))\n\t\t\t{\n\t\t\t}\n\n\t\t\tvoid trigger( int err_id ) noexcept\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t\tif( s_ )\n\t\t\t\t{\n\t\t\t\t\tif( !s_->has_value() || s_->value().err_id!=err_id )\n\t\t\t\t\t\ts_->put( leaf_detail::id_e_pair(err_id,std::move(e_)) );\n\t\t\t\t}\n\t\t\t\telse\n\t\t\t\t{\n\t\t\t\t\tusing T = typename std::remove_cv::type>::type;\n\t\t\t\t\tint c = tl_unexpected_enabled_counter();\n\t\t\t\t\tassert(c>=0);\n\t\t\t\t\tif( c )\n\t\t\t\t\t\tno_expect_slot( id_e_pair(err_id,std::forward(e_)) );\n\t\t\t\t}\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tclass preloaded\n\t\t{\n\t\t\tpreloaded & operator=( preloaded const & ) = delete;\n\n\t\t\tstd::tuple...> p_;\n\t\t\tleaf_detail::id_factory & ids_;\n\t\t\tint err_id_;\n\t\t\tbool moved_;\n\n\t\tpublic:\n\n\t\t\texplicit preloaded( E && ... e ) noexcept:\n\t\t\t\tp_(preloaded_item(std::forward(e))...),\n\t\t\t\tids_(id_factory::tl_instance()),\n\t\t\t\terr_id_(ids_.last_id()),\n\t\t\t\tmoved_(false)\n\t\t\t{\n\t\t\t}\n\n\t\t\tpreloaded( preloaded && x ) noexcept:\n\t\t\t\tp_(std::move(x.p_)),\n\t\t\t\tids_(x.ids_),\n\t\t\t\terr_id_(std::move(x.err_id_)),\n\t\t\t\tmoved_(false)\n\t\t\t{\n\t\t\t\tx.moved_ = true;\n\t\t\t}\n\n\t\t\t~preloaded() noexcept\n\t\t\t{\n\t\t\t\tif( moved_ )\n\t\t\t\t\treturn;\n\t\t\t\tint const err_id = ids_.last_id();\n\t\t\t\tif( err_id==err_id_ )\n\t\t\t\t{\n\t\t\t\t\tif( std::uncaught_exception() )\n\t\t\t\t\t\tleaf_detail::tuple_for_each_preload::trigger(p_,ids_.next_id());\n\t\t\t\t}\n\t\t\t\telse\n\t\t\t\t\tleaf_detail::tuple_for_each_preload::trigger(p_,err_id);\n\t\t\t}\n\t\t};\n\t} // leaf_detail\n\n\ttemplate \n\tleaf_detail::preloaded preload( E && ... e ) noexcept\n\t{\n\t\treturn leaf_detail::preloaded(std::forward(e)...);\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tclass deferred_item\n\t\t{\n\t\t\ttypedef decltype(std::declval()()) E;\n\t\t\tslot * s_;\n\t\t\tF f_;\n\n\t\tpublic:\n\n\t\t\texplicit deferred_item( F && f ) noexcept:\n\t\t\t\ts_(tl_slot_ptr()),\n\t\t\t\tf_(std::forward(f))\n\t\t\t{\n\t\t\t}\n\n\t\t\tvoid trigger( int err_id ) noexcept\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t\tif( s_ )\n\t\t\t\t{\n\t\t\t\t\tif( !s_->has_value() || s_->value().err_id!=err_id )\n\t\t\t\t\t\ts_->put( leaf_detail::id_e_pair(err_id,f_()) );\n\t\t\t\t}\n\t\t\t\telse\n\t\t\t\t{\n\t\t\t\t\tusing T = typename std::remove_cv::type>::type;\n\t\t\t\t\tint c = tl_unexpected_enabled_counter();\n\t\t\t\t\tassert(c>=0);\n\t\t\t\t\tif( c )\n\t\t\t\t\t\tno_expect_slot( id_e_pair(err_id,std::forward(f_())) );\n\t\t\t\t}\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tclass deferred\n\t\t{\n\t\t\tdeferred & operator=( deferred const & ) = delete;\n\t\t\tstd::tuple...> d_;\n\t\t\tleaf_detail::id_factory & ids_;\n\t\t\tint err_id_;\n\t\t\tbool moved_;\n\n\t\tpublic:\n\n\t\t\texplicit deferred( F && ... f ) noexcept:\n\t\t\t\td_(deferred_item(std::forward(f))...),\n\t\t\t\tids_(id_factory::tl_instance()),\n\t\t\t\terr_id_(ids_.last_id()),\n\t\t\t\tmoved_(false)\n\t\t\t{\n\t\t\t}\n\n\t\t\tdeferred( deferred && x ) noexcept:\n\t\t\t\td_(std::move(x.d_)),\n\t\t\t\tids_(x.ids_),\n\t\t\t\terr_id_(std::move(x.err_id_)),\n\t\t\t\tmoved_(false)\n\t\t\t{\n\t\t\t\tx.moved_ = true;\n\t\t\t}\n\n\t\t\t~deferred() noexcept\n\t\t\t{\n\t\t\t\tif( moved_ )\n\t\t\t\t\treturn;\n\t\t\t\tint const err_id = ids_.last_id();\n\t\t\t\tif( err_id==err_id_ )\n\t\t\t\t{\n\t\t\t\t\tif( std::uncaught_exception() )\n\t\t\t\t\t\tleaf_detail::tuple_for_each_preload::trigger(d_,ids_.next_id());\n\t\t\t\t}\n\t\t\t\telse\n\t\t\t\t\tleaf_detail::tuple_for_each_preload::trigger(d_,err_id);\n\t\t\t}\n\t\t};\n\t} // leaf_detail\n\n\ttemplate \n\tleaf_detail::deferred defer( F && ... f ) noexcept\n\t{\n\t\treturn leaf_detail::deferred(std::forward(f)...);\n\t}\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/preload.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/result.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/result.hpp\"\n#ifndef BOOST_LEAF_2CD8E6B8CA8D11E8BD3B80D66CE5B91B\n#define BOOST_LEAF_2CD8E6B8CA8D11E8BD3B80D66CE5B91B\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/detail/dynamic_store.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/dynamic_store.hpp\"\n#ifndef BOOST_LEAF_6CCC5F56124B11E9B6C4CB8C8C7F4AFC\n#define BOOST_LEAF_6CCC5F56124B11E9B6C4CB8C8C7F4AFC\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\tclass dynamic_store\n\t\t{\n\t\tprotected:\n\n\t\t\tdynamic_store() noexcept\n\t\t\t{\n\t\t\t}\n\n\t\t\t~dynamic_store() noexcept\n\t\t\t{\n\t\t\t}\n\n\t\tpublic:\n\n\t\t\tvirtual int err_id() const noexcept = 0;\n\t\t\tvirtual int unload() noexcept = 0;\n\t\t\tvirtual int unload( int error_code ) noexcept = 0;\n\t\t};\n\t}\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/dynamic_store.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/throw.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/throw.hpp\"\n#ifndef BOOST_LEAF_75F38740D98D11E881DDB244C82C3C47\n#define BOOST_LEAF_75F38740D98D11E881DDB244C82C3C47\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/error.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/error.hpp\"\n#ifndef BOOST_LEAF_BA049396D0D411E8B45DF7D4A759E189\n#define BOOST_LEAF_BA049396D0D411E8B45DF7D4A759E189\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/detail/teleport.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/teleport.hpp\"\n#ifndef BOOST_LEAF_B449A5821DA411E99B9A012588D1CC0E\n#define BOOST_LEAF_B449A5821DA411E99B9A012588D1CC0E\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/detail/optional.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/optional.hpp\"\n#ifndef BOOST_LEAF_47258FCCB6B411E8A1F35AA00C39171A\n#define BOOST_LEAF_47258FCCB6B411E8A1F35AA00C39171A\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tclass optional\n\t\t{\n\t\t\tunion { T value_; };\n\t\t\tbool has_value_;\n\n\t\tpublic:\n\n\t\t\ttypedef T value_type;\n\t\t\toptional() noexcept:\n\t\t\t\thas_value_(false)\n\t\t\t{\n\t\t\t}\n\n\t\t\toptional( optional const & x ):\n\t\t\t\thas_value_(x.has_value_)\n\t\t\t{\n\t\t\t\tif( x.has_value_ )\n\t\t\t\t\t(void) new (&value_) T( x.value_ );\n\t\t\t}\n\n\t\t\toptional( optional && x ) noexcept:\n\t\t\t\thas_value_(x.has_value_)\n\t\t\t{\n\t\t\t\tif( x.has_value_ )\n\t\t\t\t{\n\t\t\t\t\t(void) new (&value_) T( std::move(x.value_) );\n\t\t\t\t\tx.value_.~T();\n\t\t\t\t\tx.has_value_ = false;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\toptional( T const & v ):\n\t\t\t\tvalue_(v),\n\t\t\t\thas_value_(true)\n\t\t\t{\n\t\t\t}\n\n\t\t\toptional( T && v ) noexcept:\n\t\t\t\tvalue_(std::move(v)),\n\t\t\t\thas_value_(true)\n\t\t\t{\n\t\t\t}\n\n\t\t\toptional & operator=( optional const & x )\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\tif( x.has_value() )\n\t\t\t\t\tput(x.value());\n\t\t\t\treturn *this;\n\t\t\t}\n\n\t\t\toptional & operator=( optional && x ) noexcept\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\tif( x.has_value() )\n\t\t\t\t\tput(std::move(x).value());\n\t\t\t\treturn *this;\n\t\t\t}\n\n\t\t\t~optional() noexcept\n\t\t\t{\n\t\t\t\treset();\n\t\t\t}\n\n\t\t\tvoid reset() noexcept\n\t\t\t{\n\t\t\t\tif( has_value() )\n\t\t\t\t{\n\t\t\t\t\tvalue_.~T();\n\t\t\t\t\thas_value_=false;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\ttemplate \n\t\t\tT & emplace( A && ... a )\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(std::forward (a)...);\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & put( T const & v )\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(v);\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & put( T && v ) noexcept\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(std::move(v));\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT const * has_value() const noexcept\n\t\t\t{\n\t\t\t\treturn has_value_ ? &value_ : 0;\n\t\t\t}\n\n\t\t\tT * has_value() noexcept\n\t\t\t{\n\t\t\t\treturn has_value_ ? &value_ : 0;\n\t\t\t}\n\n\t\t\tT const & value() const & noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & value() & noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT const && value() const && noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT value() && noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\tT tmp(std::move(value_));\n\t\t\t\treset();\n\t\t\t\treturn tmp;\n\t\t\t}\n\t\t};\n\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/optional.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/detail/print.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/print.hpp\"\n#ifndef BOOST_LEAF_3BAB50A2B87E11E89EEB30600C39171A\n#define BOOST_LEAF_3BAB50A2B87E11E89EEB30600C39171A\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tinline char const * check_prefix( char const * t, char const (&prefix)[N] )\n\t\t{\n\t\t\treturn std::strncmp(t,prefix,sizeof(prefix)-1)==0 ? t+sizeof(prefix)-1 : t;\n\t\t}\n\t}\n\n\ttemplate \n\tchar const * type() noexcept\n\t{\n\tchar const * t =\n#ifdef __FUNCSIG__\n\t\t__FUNCSIG__;\n#else\n\t\t__PRETTY_FUNCTION__;\n#endif\n#if defined(__clang__)\n\t\tassert(leaf_detail::check_prefix(t,\"const char *boost::leaf::type() \")==t+32);\n\t\treturn t+32;\n#elif defined(__GNUC__)\n\t\tassert(leaf_detail::check_prefix(t,\"const char* boost::leaf::type() \")==t+32);\n\t\treturn t+32;\n#else\n\t\tchar const * clang_style = leaf_detail::check_prefix(t,\"const char *boost::leaf::type() \");\n\t\tif( clang_style!=t )\n\t\t\treturn clang_style;\n\t\tchar const * gcc_style = leaf_detail::check_prefix(t,\"const char* boost::leaf::type() \");\n\t\tif( gcc_style!=t )\n\t\t\treturn gcc_style;\n#endif\n\t\treturn t;\n\t}\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct is_printable: std::false_type\n\t\t{\n\t\t};\n\n\t\ttemplate \n\t\tstruct is_printable()<(), void())>: std::true_type\n\t\t{\n\t\t};\n\n\t\t////////////////////////////////////////\n\n\t\ttemplate \n\t\tstruct has_printable_member_value: std::false_type\n\t\t{\n\t\t};\n\n\t\ttemplate \n\t\tstruct has_printable_member_value()<().value, void())>: std::true_type\n\t\t{\n\t\t};\n\n\t\t////////////////////////////////////////\n\n\t\ttemplate ::value, bool ValuePrintable=has_printable_member_value::value>\n\t\tstruct diagnostic;\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & x )\n\t\t\t{\n\t\t\t\tos << x;\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & x )\n\t\t\t{\n\t\t\t\tos << type() << \": \" << x.value;\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & )\n\t\t\t{\n\t\t\t\tos << type() << \": N/A\";\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, std::exception_ptr const & )\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/print.hpp\n//<<<<<<<<\n#include \n#include \n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\tclass id_factory\n\t\t{\n\t\t\tid_factory( id_factory const & ) = delete;\n\t\t\tid_factory & operator=( id_factory const & ) = delete;\n\n\t\t\tstatic int new_err_id() noexcept\n\t\t\t{\n\t\t\t\tstatic std::atomic c;\n\t\t\t\tif( unsigned id = ++c )\n\t\t\t\t\treturn int(id);\n\t\t\t\telse\n\t\t\t\t\treturn int(++c);\n\t\t\t}\n\n\t\t\tint next_id_;\n\t\t\tint last_id_;\n\n\t\t\tid_factory() noexcept:\n\t\t\t\tnext_id_(new_err_id()),\n\t\t\t\tlast_id_(next_id_-1)\n\t\t\t{\n\t\t\t}\n\n\t\tpublic:\n\n\t\t\tstatic id_factory & tl_instance() noexcept\n\t\t\t{\n\t\t\t\tstatic thread_local id_factory s;\n\t\t\t\treturn s;\n\t\t\t}\n\n\t\t\tint last_id() noexcept\n\t\t\t{\n\t\t\t\treturn last_id_;\n\t\t\t}\n\n\t\t\tint new_id() noexcept\n\t\t\t{\n\t\t\t\tint id = last_id_ = next_id_;\n\t\t\t\tnext_id_ = new_err_id();\n\t\t\t\treturn id;\n\t\t\t}\n\n\t\t\tint next_id() noexcept\n\t\t\t{\n\t\t\t\treturn next_id_;\n\t\t\t}\n\t\t};\n\n\t\tinline int last_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().last_id();\n\t\t}\n\n\t\tinline int new_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().new_id();\n\t\t}\n\n\t\tinline int next_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().next_id();\n\t\t}\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\tclass slot_base\n\t\t{\n\t\t\tslot_base( slot_base const & ) = delete;\n\t\t\tslot_base & operator=( slot_base const & ) = delete;\n\n\t\t\tvirtual bool slot_print( std::ostream &, int err_id ) const = 0;\n\n\t\tpublic:\n\n\t\t\tstatic void print( std::ostream & os, int err_id )\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t\tfor( slot_base const * p = first(); p; p=p->next_ )\n\t\t\t\t\tif( p->slot_print(os,err_id) )\n\t\t\t\t\t\tos << std::endl;\n\t\t\t}\n\n\t\tprotected:\n\n\t\t\tstatic slot_base const * & first() noexcept\n\t\t\t{\n\t\t\t\tstatic thread_local slot_base const * p = 0;\n\t\t\t\treturn p;\n\t\t\t}\n\n\t\t\tslot_base const * const next_;\n\n\t\t\tslot_base() noexcept:\n\t\t\t\tnext_(first())\n\t\t\t{\n\t\t\t\tfirst() = this;\n\t\t\t}\n\n\t\t\t~slot_base() noexcept\n\t\t\t{\n\t\t\t\tslot_base const * & p = first();\n\t\t\t\tassert(p==this);\n\t\t\t\tp = next_;\n\t\t\t}\n\t\t};\n\t}\n\n\t////////////////////////////////////////\n\n\tclass error_id;\n\tnamespace leaf_detail { class captured_exception; }\n\n\tclass error_info\n\t{\n\t\terror_info( error_info const & ) = delete;\n\t\terror_info & operator=( error_info const & ) = delete;\n\n\t\tint const err_id_;\n\t\tstd::exception const * const ex_;\n\t\tleaf_detail::captured_exception const * const cap_;\n\t\tvoid (* const print_ex_)( std::ostream &, std::exception const *, leaf_detail::captured_exception const * );\n\n\tpublic:\n\n\t\texplicit error_info( int err_id ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(0),\n\t\t\tcap_(0),\n\t\t\tprint_ex_(0)\n\t\t{\n\t\t}\n\n\t\terror_info( int err_id, std::exception const * ex, void (*print_ex)(std::ostream &, std::exception const *, leaf_detail::captured_exception const *) ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(ex),\n\t\t\tcap_(0),\n\t\t\tprint_ex_(print_ex)\n\t\t{\n\t\t\tassert(print_ex_!=0);\n\t\t}\n\n\t\terror_info( int err_id, std::exception const * ex, leaf_detail::captured_exception const * cap, void (*print_ex)(std::ostream &, std::exception const *, leaf_detail::captured_exception const *) ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(ex),\n\t\t\tcap_(cap),\n\t\t\tprint_ex_(print_ex)\n\t\t{\n\t\t\tassert(print_ex_!=0);\n\t\t}\n\n\t\tint err_id() const noexcept\n\t\t{\n\t\t\treturn err_id_;\n\t\t}\n\n\t\tbool has_error() const noexcept\n\t\t{\n\t\t\treturn err_id_!=0;\n\t\t}\n\n\t\terror_id error() const noexcept;\n\n\t\tbool has_exception() const noexcept\n\t\t{\n\t\t\treturn print_ex_!=0;\n\t\t}\n\n\t\tstd::exception const * exception() const noexcept\n\t\t{\n\t\t\tassert(has_exception());\n\t\t\treturn ex_;\n\t\t}\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, error_info const & x )\n\t\t{\n\t\t\tos << \"LEAF Error ID: \" << x.err_id_ << std::endl;\n\t\t\tif( x.print_ex_ )\n\t\t\t\tx.print_ex_(os,x.ex_,x.cap_);\n\t\t\tleaf_detail::slot_base::print(os,x.err_id_);\n\t\t\treturn os;\n\t\t}\n\t};\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct has_data_member_value\n\t\t{\n\t\t\tstatic constexpr bool value=false;\n\t\t};\n\n\t\ttemplate \n\t\tstruct has_data_member_value().value, void())>\n\t\t{\n\t\t\tstatic constexpr bool value=std::is_member_object_pointer::value;\n\t\t};\n\n\t\ttemplate \n\t\tstruct is_error_type_default\n\t\t{\n\t\t\tstatic constexpr bool value = has_data_member_value::value || std::is_base_of::value;\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\t}\n\n\ttemplate \n\tstruct is_error_type: leaf_detail::is_error_type_default\n\t{\n\t};\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\tclass monitor_base\n\t\t{\n\t\t\tmonitor_base( monitor_base const & ) = delete;\n\t\t\tmonitor_base & operator=( monitor_base const & ) = delete;\n\n\t\t\tmutable error_info const * ei_;\n\n\t\tprotected:\n\n\t\t\tmonitor_base() noexcept:\n\t\t\t\tei_(0)\n\t\t\t{\n\t\t\t}\n\n\t\t\tmonitor_base( monitor_base && x ) noexcept:\n\t\t\t\tei_(0)\n\t\t\t{\n\t\t\t\tx.ei_ = 0;\n\t\t\t}\n\n\t\t\tvoid set_error_info( error_info const & ei ) const noexcept\n\t\t\t{\n\t\t\t\tei_ = &ei;\n\t\t\t}\n\n\t\t\terror_info const & get_error_info() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn *ei_;\n\t\t\t}\n\n\t\tpublic:\n\n\t\t\tbool has_error() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->has_error();\n\t\t\t}\n\n\t\t\terror_id error() const noexcept;\n\n\t\t\tbool has_exception() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->has_exception();\n\t\t\t}\n\n\t\t\tstd::exception const * exception() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->exception();\n\t\t\t}\n\t\t};\n\t}\n\n\tclass diagnostic_info: leaf_detail::monitor_base\n\t{\n\tpublic:\n\n\t\tchar const * (*first_type)();\n\t\tint count;\n\n\t\texplicit diagnostic_info( char const * (*first_type)() ) noexcept:\n\t\t\tfirst_type(first_type),\n\t\t\tcount(1)\n\t\t{\n\t\t}\n\n\t\tusing monitor_base::set_error_info;\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, diagnostic_info const & x )\n\t\t{\n\t\t\tassert(x.first_type!=0);\n\t\t\tassert(x.count>0);\n\t\t\tos << x.get_error_info() << \"diagnostic_info: Detected \";\n\t\t\tif( x.count==1 )\n\t\t\t\tos << \"1 attempt to communicate an E-object\";\n\t\t\telse\n\t\t\t\tos << x.count << \" attempts to communicate unexpected E-objects, the first one\";\n\t\t\treturn os << \" of type \" << x.first_type() << std::endl;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, diagnostic_info const & ) noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t}\n\n\tclass verbose_diagnostic_info: leaf_detail::monitor_base\n\t{\n\t\tstd::string s_;\n\t\tstd::set already_;\n\n\tpublic:\n\n\t\tverbose_diagnostic_info() noexcept\n\t\t{\n\t\t}\n\n\t\tusing monitor_base::set_error_info;\n\n\t\tvoid reset() noexcept\n\t\t{\n\t\t\ts_.clear();\n\t\t\talready_.clear();\n\t\t}\n\n\t\ttemplate \n\t\tvoid add( E const & e )\n\t\t{\n\t\t\tstd::stringstream s;\n\t\t\tif( leaf_detail::diagnostic::print(s,e) && already_.insert(&type).second )\n\t\t\t{\n\t\t\t\ts << std::endl;\n\t\t\t\ts_ += s.str();\n\t\t\t}\n\t\t}\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, verbose_diagnostic_info const & x )\n\t\t{\n\t\t\tos <<\n\t\t\t\tx.get_error_info() <<\n\t\t\t\t\"verbose_diagnostic_info:\" << std::endl <<\n\t\t\t\tx.s_;\n\t\t\treturn os;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, verbose_diagnostic_info const & ) noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct id_e_pair\n\t\t{\n\t\t\tint err_id;\n\t\t\tE e;\n\n\t\t\texplicit id_e_pair( int err_id ) noexcept:\n\t\t\t\terr_id(err_id)\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\n\t\t\tid_e_pair( int err_id, E const & e ):\n\t\t\t\terr_id(err_id),\n\t\t\t\te(e)\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\n\t\t\tid_e_pair( int err_id, E && e ) noexcept:\n\t\t\t\terr_id(err_id),\n\t\t\t\te(std::forward(e))\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\t\t};\n\n\t\tinline int & tl_unexpected_enabled_counter() noexcept\n\t\t{\n\t\t\tstatic thread_local int c;\n\t\t\treturn c;\n\t\t}\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tclass slot:\n\t\t\tslot_base,\n\t\t\toptional>\n\t\t{\n\t\t\tslot( slot const & ) = delete;\n\t\t\tslot & operator=( slot const & ) = delete;\n\t\t\ttypedef optional> base;\n\t\t\tslot * prev_;\n\t\t\tstatic_assert(is_error_type::value,\"Not an error type\");\n\n\t\t\tbool slot_print( std::ostream &, int err_id ) const;\n\n\t\tprotected:\n\n\t\t\tslot() noexcept;\n\t\t\t~slot() noexcept;\n\n\t\tpublic:\n\n\t\t\tusing base::put;\n\t\t\tusing base::has_value;\n\t\t\tusing base::value;\n\t\t\tusing base::reset;\n\t\t\tusing base::emplace;\n\t\t};\n\n\t\ttemplate \n\t\tslot * & tl_slot_ptr() noexcept\n\t\t{\n\t\t\tstatic thread_local slot * s;\n\t\t\treturn s;\n\t\t}\n\n\t\ttemplate \n\t\tvoid put_unexpected( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tif( slot * p = tl_slot_ptr() )\n\t\t\t{\n\t\t\t\tif( p->has_value() )\n\t\t\t\t{\n\t\t\t\t\tauto & p_id_e = p->value();\n\t\t\t\t\tif( p_id_e.err_id==id_e.err_id )\n\t\t\t\t\t{\n\t\t\t\t\t\t++p_id_e.e.count;\n\t\t\t\t\t\treturn;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\t(void) p->put( id_e_pair(id_e.err_id,diagnostic_info(&type)) );\n\t\t\t}\n\t\t}\n\n\t\ttemplate \n\t\tvoid put_verbose_diagnostic_info( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tif( slot * sl = tl_slot_ptr() )\n\t\t\t{\n\t\t\t\tif( auto * pv = sl->has_value() )\n\t\t\t\t{\n\t\t\t\t\tif( pv->err_id!=id_e.err_id )\n\t\t\t\t\t{\n\t\t\t\t\t\tpv->err_id = id_e.err_id;\n\t\t\t\t\t\tpv->e.reset();\n\t\t\t\t\t}\n\t\t\t\t\tpv->e.add(id_e.e);\n\t\t\t\t}\n\t\t\t\telse\n\t\t\t\t\tsl->emplace(id_e.err_id).e.add(id_e.e);\n\t\t\t}\n\t\t}\n\n\t\ttemplate \n\t\tvoid no_expect_slot( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tput_unexpected(id_e);\n\t\t\tput_verbose_diagnostic_info(id_e);\n\t\t}\n\n\t\ttemplate \n\t\tint put_slot( int err_id, E && e ) noexcept\n\t\t{\n\t\t\tusing T = typename std::remove_cv::type>::type;\n\t\t\tassert(err_id);\n\t\t\tif( slot * p = tl_slot_ptr() )\n\t\t\t\t(void) p->put( id_e_pair(err_id,std::forward(e)) );\n\t\t\telse\n\t\t\t{\n\t\t\t\tint c = tl_unexpected_enabled_counter();\n\t\t\t\tassert(c>=0);\n\t\t\t\tif( c )\n\t\t\t\t\tno_expect_slot( id_e_pair(err_id,std::forward(e)) );\n\t\t\t}\n\t\t\treturn 0;\n\t\t}\n\n\t\ttemplate \n\t\tslot::slot() noexcept\n\t\t{\n\t\t\tslot * & p = tl_slot_ptr();\n\t\t\tprev_ = p;\n\t\t\tp = this;\n\t\t}\n\n\t\ttemplate \n\t\tslot::~slot() noexcept\n\t\t{\n\t\t\tif( prev_ )\n\t\t\t{\n\t\t\t\toptional> & p = *prev_;\n\t\t\t\tp = std::move(*this);\n\t\t\t}\n\t\t\telse\n\t\t\t{\n\t\t\t\tint c = tl_unexpected_enabled_counter();\n\t\t\t\tassert(c>=0);\n\t\t\t\tif( c && has_value() )\n\t\t\t\t\tno_expect_slot(value());\n\t\t\t}\n\t\t\ttl_slot_ptr() = prev_;\n\t\t}\n\n\t\ttemplate \n\t\tbool slot::slot_print( std::ostream & os, int err_id ) const\n\t\t{\n\t\t\tassert(err_id);\n\t\t\tif( tl_slot_ptr()==this )\n\t\t\t\tif( id_e_pair const * id_e = has_value() )\n\t\t\t\t\tif( id_e->err_id==err_id )\n\t\t\t\t\t\treturn diagnostice)>::print(os,id_e->e);\n\t\t\treturn false;\n\t\t}\n\n\t\tenum class result_variant\n\t\t{\n\t\t\tvalue,\n\t\t\terr_id,\n\t\t\tcap\n\t\t};\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/teleport.hpp\n//<<<<<<<<\n#include \n\n#define LEAF_ERROR(...) ::boost::leaf::leaf_detail::new_error_at(__FILE__,__LINE__,__FUNCTION__,__VA_ARGS__)\n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\tclass error_category: public std::error_category\n\t\t{\n\t\t\tbool equivalent( int, std::error_condition const & ) const noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\tbool equivalent( std::error_code const &, int ) const noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\tchar const * name() const noexcept\n\t\t\t{\n\t\t\t\treturn \"LEAF error, use with leaf::handle_some or leaf::handle_all.\";\n\t\t\t}\n\n\t\t\tstd::string message( int condition ) const\n\t\t\t{\n\t\t\t\treturn name();\n\t\t\t}\n\t\t};\n\n\t\tinline error_category const & get_error_category() noexcept\n\t\t{\n\t\t\tstatic error_category cat;\n\t\t\treturn cat;\n\t\t}\n\t}\n\n\tinline bool is_error_id( std::error_code const & ec )\n\t{\n\t\treturn &ec.category() == &leaf_detail::get_error_category();\n\t}\n\n\t////////////////////////////////////////\n\n\tstruct e_original_ec { std::error_code value; };\n\n\tclass error_id: public std::error_code\n\t{\n\t\ttemplate \n\t\tstatic std::error_code import( ErrorCode && ec ) noexcept\n\t\t{\n\t\t\tstd::error_category const & cat = leaf_detail::get_error_category();\n\t\t\tif( ec && &ec.category()!=&cat )\n\t\t\t{\n\t\t\t\tint err_id = leaf_detail::new_id();\n\t\t\t\tleaf_detail::put_slot(err_id, e_original_ec{ec});\n\t\t\t\treturn std::error_code(err_id, cat);\n\t\t\t}\n\t\t\telse\n\t\t\t\treturn ec;\n\t\t}\n\n\tpublic:\n\n\t\terror_id() noexcept = default;\n\n\t\ttemplate \n\t\terror_id( std::error_code const & ec, E && ... e ) noexcept:\n\t\t\terror_code(import(ec))\n\t\t{\n\t\t\t(void) propagate(std::forward(e)...);\n\t\t}\n\n\t\ttemplate \n\t\terror_id( std::error_code && ec, E && ... e ) noexcept:\n\t\t\terror_code(import(std::move(ec)))\n\t\t{\n\t\t\t(void) propagate(std::forward(e)...);\n\t\t}\n\n\t\terror_id propagate() const noexcept\n\t\t{\n\t\t\tassert(is_error_id(*this));\n\t\t\treturn *this;\n\t\t}\n\n\t\ttemplate \n\t\terror_id propagate( E && ... e ) const noexcept\n\t\t{\n\t\t\tassert(is_error_id(*this));\n\t\t\tauto _ = { leaf_detail::put_slot(value(), std::forward(e))... };\n\t\t\t(void) _;\n\t\t\treturn *this;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\tinline error_id make_error( int err_id )\n\t\t{\n\t\t\tassert(err_id);\n\t\t\treturn error_id(std::error_code(err_id, get_error_category()));\n\t\t}\n\t}\n\n\ttemplate \n\terror_id new_error( E && ... e ) noexcept\n\t{\n\t\treturn leaf_detail::make_error(leaf_detail::new_id()).propagate(std::forward(e)...);\n\t}\n\n\tinline error_id next_error() noexcept\n\t{\n\t\treturn leaf_detail::make_error(leaf_detail::next_id());\n\t}\n\n\tinline error_id error_info::error() const noexcept\n\t{\n\t\tassert(has_error());\n\t\treturn leaf_detail::make_error(err_id_);\n\t}\n\n\tinline error_id leaf_detail::monitor_base::error() const noexcept\n\t{\n\t\tassert(ei_!=0);\n\t\treturn ei_->error();\n\t}\n\n\t////////////////////////////////////////\n\n\tstruct e_source_location\n\t{\n\t\tchar const * const file;\n\t\tint const line;\n\t\tchar const * const function;\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, e_source_location const & x )\n\t\t{\n\t\t\treturn os << leaf::type() << \": \" << x.file << '(' << x.line << \") in function \" << x.function;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <> struct is_error_type_default: std::true_type { };\n\n\t\ttemplate \n\t\terror_id new_error_at( char const * file, int line, char const * function, E && ... e ) noexcept\n\t\t{\n\t\t\tassert(file&&*file);\n\t\t\tassert(line>0);\n\t\t\tassert(function&&*function);\n\t\t\te_source_location sl { file, line, function }; // Temp object MSVC workaround\n\t\t\treturn new_error( std::move(sl), std::forward(e)... );\n\t\t}\n\t}\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/error.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/throw_exception.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/throw_exception.hpp\"\n#ifndef BOOST_LEAF_68F2D7C61AA111E9952B34BE67511AEB\n#define BOOST_LEAF_68F2D7C61AA111E9952B34BE67511AEB\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n#include \n\n#if defined(LEAF_NO_EXCEPTIONS) || defined(BOOST_EXCEPTIONS)\n\nnamespace boost\n{\n\t[[noreturn]] void throw_exception( std::exception const & ); // user defined\n}\n\nnamespace boost { namespace leaf {\n\n\ttemplate \n\t[[noreturn]] void throw_exception( T const & e )\n\t{\n\t\t::boost::throw_exception(e);\n\t}\n\n} }\n\n#else\n\nnamespace boost { namespace leaf {\n\n\ttemplate \n\t[[noreturn]] void throw_exception( T const & e )\n\t{\n\t\tthrow e;\n\t}\n\n} }\n\n#endif\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/throw_exception.hpp\n//<<<<<<<<\n#include \n\n#define LEAF_EXCEPTION(...) ::boost::leaf::leaf_detail::exception_at(__FILE__,__LINE__,__FUNCTION__,__VA_ARGS__)\n#define LEAF_THROW(...) ::boost::leaf::throw_exception(LEAF_EXCEPTION(__VA_ARGS__))\n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\tinline void enforce_std_exception( std::exception const & ) noexcept { }\n\n\t\ttemplate \n\t\tclass exception:\n\t\t\tpublic Ex,\n\t\t\tpublic error_id\n\t\t{\n\t\tpublic:\n\n\t\t\texception( exception const & ) = default;\n\t\t\texception( exception && ) = default;\n\n\t\t\ttemplate \n\t\t\texception( Ex && ex, E && ... e ) noexcept:\n\t\t\t\tEx(std::move(ex)),\n\t\t\t\terror_id(new_error(std::forward(e)...))\n\t\t\t{\n\t\t\t\tleaf_detail::enforce_std_exception(*this);\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\texception exception_at( char const * file, int line, char const * function, Ex && ex, E && ... e ) noexcept\n\t\t{\n\t\t\tassert(file&&*file);\n\t\t\tassert(line>0);\n\t\t\tassert(function&&*function);\n\t\t\treturn exception( std::forward(ex), e_source_location{file,line,function}, std::forward(e)... );\n\t\t}\n\t}\n\n\ttemplate \n\tleaf_detail::exception exception( Ex && ex, E && ... e ) noexcept\n\t{\n\t\treturn leaf_detail::exception( std::forward(ex), std::forward(e)... );\n\t}\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/throw.hpp\n//<<<<<<<<\n#include \n\n#define LEAF_AUTO(v,r) auto _r_##v = r; if( !_r_##v ) return _r_##v.error(); auto & v = *_r_##v\n#define LEAF_CHECK(r) {auto _r = r; if( !_r ) return _r.error();}\n\nnamespace boost { namespace leaf {\n\n\tclass bad_result: public std::exception { };\n\n\t////////////////////////////////////////\n\n\ttemplate \n\tclass result\n\t{\n\t\tusing dynamic_store_ptr = std::shared_ptr;\n\n\t\ttemplate \n\t\tfriend class result;\n\n\t\tunion\n\t\t{\n\t\t\tT value_;\n\t\t\tmutable int err_id_;\n\t\t\tdynamic_store_ptr cap_;\n\t\t};\n\n\t\tmutable leaf_detail::result_variant which_;\n\n\t\tvoid destroy() const noexcept\n\t\t{\n\t\t\tswitch( which_ )\n\t\t\t{\n\t\t\tcase leaf_detail::result_variant::value:\n\t\t\t\tvalue_.~T();\n\t\t\t\tbreak;\n\t\t\tcase leaf_detail::result_variant::err_id:\n\t\t\t\tbreak;\n\t\t\tdefault:\n\t\t\t\tassert(which_==leaf_detail::result_variant::cap);\n\t\t\t\tcap_.~dynamic_store_ptr();\n\t\t\t}\n\t\t\twhich_= (leaf_detail::result_variant)-1;\n\t\t}\n\n\t\ttemplate \n\t\tvoid copy_from( result const & x )\n\t\t{\n\t\t\tswitch( x.which_ )\n\t\t\t{\n\t\t\tcase leaf_detail::result_variant::value:\n\t\t\t\t(void) new(&value_) T(x.value_);\n\t\t\t\tbreak;\n\t\t\tcase leaf_detail::result_variant::err_id:\n\t\t\t\terr_id_ = x.err_id_;\n\t\t\t\tbreak;\n\t\t\tdefault:\n\t\t\t\tassert(x.which_==leaf_detail::result_variant::cap);\n\t\t\t\t(void) new(&cap_) dynamic_store_ptr(x.cap_);\n\t\t\t};\n\t\t\twhich_ = x.which_;\n\t\t}\n\n\t\ttemplate \n\t\tvoid move_from( result && x ) noexcept\n\t\t{\n\t\t\tswitch( x.which_ )\n\t\t\t{\n\t\t\tcase leaf_detail::result_variant:: value:\n\t\t\t\t(void) new(&value_) T(std::move(x.value_));\n\t\t\t\twhich_ = x.which_;\n\t\t\t\tbreak;\n\t\t\tcase leaf_detail::result_variant::err_id:\n\t\t\t\terr_id_ = x.err_id_;\n\t\t\t\twhich_ = x.which_;\n\t\t\t\tbreak;\n\t\t\tdefault:\n\t\t\t\tassert(x.which_==leaf_detail::result_variant::cap);\n\t\t\t\tif( dynamic_store_ptr cap = std::move(x.cap_) )\n\t\t\t\t{\n\t\t\t\t\tx.destroy();\n\t\t\t\t\tx.err_id_ = cap->err_id();\n\t\t\t\t\tx.which_ = leaf_detail::result_variant::err_id;\n\t\t\t\t\t(void) new(&cap_) dynamic_store_ptr(std::move(cap));\n\t\t\t\t}\n\t\t\t\telse\n\t\t\t\t\t(void) new(&cap_) dynamic_store_ptr(std::move(x.cap_));\n\t\t\t\twhich_ = leaf_detail::result_variant::cap;\n\t\t\t};\n\t\t}\n\n\tpublic:\n\n\t\ttypedef T value_type;\n\n\t\t~result() noexcept\n\t\t{\n\t\t\tdestroy();\n\t\t}\n\n\t\tresult( result && x ) noexcept\n\t\t{\n\t\t\tmove_from(std::move(x));\n\t\t}\n\n\t\tresult( result const & x )\n\t\t{\n\t\t\tcopy_from(x);\n\t\t}\n\n\t\ttemplate \n\t\tresult( result && x ) noexcept\n\t\t{\n\t\t\tmove_from(std::move(x));\n\t\t}\n\n\t\ttemplate \n\t\tresult( result const & x )\n\t\t{\n\t\t\tcopy_from(x);\n\t\t}\n\n\t\tresult():\n\t\t\tvalue_(T()),\n\t\t\twhich_(leaf_detail::result_variant::value)\n\t\t{\n\t\t}\n\n\t\tresult( T && v ) noexcept:\n\t\t\tvalue_(std::move(v)),\n\t\t\twhich_(leaf_detail::result_variant::value)\n\t\t{\n\t\t}\n\n\t\tresult( T const & v ):\n\t\t\tvalue_(v),\n\t\t\twhich_(leaf_detail::result_variant::value)\n\t\t{\n\t\t}\n\n\t\tresult( error_id const & err ) noexcept:\n\t\t\terr_id_(err.value()),\n\t\t\twhich_(leaf_detail::result_variant::err_id)\n\t\t{\n\t\t}\n\n\t\tresult( std::shared_ptr && ) noexcept;\n\n\t\tresult & operator=( result && x ) noexcept\n\t\t{\n\t\t\tdestroy();\n\t\t\tmove_from(std::move(x));\n\t\t\treturn *this;\n\t\t}\n\n\t\tresult & operator=( result const & x )\n\t\t{\n\t\t\tdestroy();\n\t\t\tcopy_from(x);\n\t\t\treturn *this;\n\t\t}\n\n\t\ttemplate \n\t\tresult & operator=( result && x ) noexcept\n\t\t{\n\t\t\tdestroy();\n\t\t\tmove_from(std::move(x));\n\t\t\treturn *this;\n\t\t}\n\n\t\ttemplate \n\t\tresult & operator=( result const & x )\n\t\t{\n\t\t\tdestroy();\n\t\t\tcopy_from(x);\n\t\t\treturn *this;\n\t\t}\n\n\t\texplicit operator bool() const noexcept\n\t\t{\n\t\t\treturn which_==leaf_detail::result_variant::value;\n\t\t}\n\n\t\tT const & value() const\n\t\t{\n\t\t\tif( which_==leaf_detail::result_variant::value )\n\t\t\t\treturn value_;\n\t\t\telse\n\t\t\t\tLEAF_THROW(bad_result());\n\t\t}\n\n\t\tT & value()\n\t\t{\n\t\t\tif( which_==leaf_detail::result_variant::value )\n\t\t\t\treturn value_;\n\t\t\telse\n\t\t\t\tLEAF_THROW(bad_result());\n\t\t}\n\n\t\tT const & operator*() const\n\t\t{\n\t\t\treturn value();\n\t\t}\n\n\t\tT & operator*()\n\t\t{\n\t\t\treturn value();\n\t\t}\n\n\t\ttemplate \n\t\terror_id error( E && ... e ) const noexcept\n\t\t{\n\t\t\tswitch( which_ )\n\t\t\t{\n\t\t\tcase leaf_detail::result_variant::value:\n\t\t\t\treturn { };\n\t\t\tcase leaf_detail::result_variant::cap:\n\t\t\t\t{\n\t\t\t\t\tdynamic_store_ptr cap = cap_;\n\t\t\t\t\tdestroy();\n\t\t\t\t\terr_id_ = cap->unload();\n\t\t\t\t\twhich_ = leaf_detail::result_variant::err_id;\n\t\t\t\t}\n\t\t\tdefault:\n\t\t\t\tassert(which_==leaf_detail::result_variant::err_id);\n\t\t\t\treturn leaf_detail::make_error(err_id_);\n\t\t\t}\n\t\t}\n\t};\n\n\t////////////////////////////////////////\n\n\ttemplate <>\n\tclass result:\n\t\tresult\n\t{\n\t\ttypedef result base;\n\n\t\ttemplate \n\t\tfriend class result;\n\n\t\tresult( result && rb ):\n\t\t\tbase(std::move(rb))\n\t\t{\n\t\t}\n\n\tpublic:\n\n\t\ttypedef void value_type;\n\n\t\t~result() noexcept\n\t\t{\n\t\t}\n\n\t\tresult() = default;\n\n\t\tresult( error_id const & err ) noexcept:\n\t\t\tbase(err)\n\t\t{\n\t\t}\n\n\t\tresult( std::shared_ptr && ) noexcept;\n\n\t\tvoid value() const\n\t\t{\n\t\t\t(void) base::value();\n\t\t}\n\n\t\tvoid operator*() const\n\t\t{\n\t\t\treturn value();\n\t\t}\n\n\t\tusing base::operator bool;\n\t\tusing base::error;\n\t};\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/result.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/throw_exception.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/throw_exception.hpp\"\n#ifndef BOOST_LEAF_68F2D7C61AA111E9952B34BE67511AEB\n#define BOOST_LEAF_68F2D7C61AA111E9952B34BE67511AEB\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n#include \n\n#if defined(LEAF_NO_EXCEPTIONS) || defined(BOOST_EXCEPTIONS)\n\nnamespace boost\n{\n\t[[noreturn]] void throw_exception( std::exception const & ); // user defined\n}\n\nnamespace boost { namespace leaf {\n\n\ttemplate \n\t[[noreturn]] void throw_exception( T const & e )\n\t{\n\t\t::boost::throw_exception(e);\n\t}\n\n} }\n\n#else\n\nnamespace boost { namespace leaf {\n\n\ttemplate \n\t[[noreturn]] void throw_exception( T const & e )\n\t{\n\t\tthrow e;\n\t}\n\n} }\n\n#endif\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/throw_exception.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/throw.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/throw.hpp\"\n#ifndef BOOST_LEAF_75F38740D98D11E881DDB244C82C3C47\n#define BOOST_LEAF_75F38740D98D11E881DDB244C82C3C47\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/error.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/error.hpp\"\n#ifndef BOOST_LEAF_BA049396D0D411E8B45DF7D4A759E189\n#define BOOST_LEAF_BA049396D0D411E8B45DF7D4A759E189\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/detail/teleport.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/teleport.hpp\"\n#ifndef BOOST_LEAF_B449A5821DA411E99B9A012588D1CC0E\n#define BOOST_LEAF_B449A5821DA411E99B9A012588D1CC0E\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/detail/optional.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/optional.hpp\"\n#ifndef BOOST_LEAF_47258FCCB6B411E8A1F35AA00C39171A\n#define BOOST_LEAF_47258FCCB6B411E8A1F35AA00C39171A\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tclass optional\n\t\t{\n\t\t\tunion { T value_; };\n\t\t\tbool has_value_;\n\n\t\tpublic:\n\n\t\t\ttypedef T value_type;\n\t\t\toptional() noexcept:\n\t\t\t\thas_value_(false)\n\t\t\t{\n\t\t\t}\n\n\t\t\toptional( optional const & x ):\n\t\t\t\thas_value_(x.has_value_)\n\t\t\t{\n\t\t\t\tif( x.has_value_ )\n\t\t\t\t\t(void) new (&value_) T( x.value_ );\n\t\t\t}\n\n\t\t\toptional( optional && x ) noexcept:\n\t\t\t\thas_value_(x.has_value_)\n\t\t\t{\n\t\t\t\tif( x.has_value_ )\n\t\t\t\t{\n\t\t\t\t\t(void) new (&value_) T( std::move(x.value_) );\n\t\t\t\t\tx.value_.~T();\n\t\t\t\t\tx.has_value_ = false;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\toptional( T const & v ):\n\t\t\t\tvalue_(v),\n\t\t\t\thas_value_(true)\n\t\t\t{\n\t\t\t}\n\n\t\t\toptional( T && v ) noexcept:\n\t\t\t\tvalue_(std::move(v)),\n\t\t\t\thas_value_(true)\n\t\t\t{\n\t\t\t}\n\n\t\t\toptional & operator=( optional const & x )\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\tif( x.has_value() )\n\t\t\t\t\tput(x.value());\n\t\t\t\treturn *this;\n\t\t\t}\n\n\t\t\toptional & operator=( optional && x ) noexcept\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\tif( x.has_value() )\n\t\t\t\t\tput(std::move(x).value());\n\t\t\t\treturn *this;\n\t\t\t}\n\n\t\t\t~optional() noexcept\n\t\t\t{\n\t\t\t\treset();\n\t\t\t}\n\n\t\t\tvoid reset() noexcept\n\t\t\t{\n\t\t\t\tif( has_value() )\n\t\t\t\t{\n\t\t\t\t\tvalue_.~T();\n\t\t\t\t\thas_value_=false;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\ttemplate \n\t\t\tT & emplace( A && ... a )\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(std::forward(a)...);\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & put( T const & v )\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(v);\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & put( T && v ) noexcept\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(std::move(v));\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT const * has_value() const noexcept\n\t\t\t{\n\t\t\t\treturn has_value_ ? &value_ : 0;\n\t\t\t}\n\n\t\t\tT * has_value() noexcept\n\t\t\t{\n\t\t\t\treturn has_value_ ? &value_ : 0;\n\t\t\t}\n\n\t\t\tT const & value() const & noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & value() & noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT const && value() const && noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT value() && noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\tT tmp(std::move(value_));\n\t\t\t\treset();\n\t\t\t\treturn tmp;\n\t\t\t}\n\t\t};\n\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/optional.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/detail/print.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/print.hpp\"\n#ifndef BOOST_LEAF_3BAB50A2B87E11E89EEB30600C39171A\n#define BOOST_LEAF_3BAB50A2B87E11E89EEB30600C39171A\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tinline char const * check_prefix( char const * t, char const (&prefix)[N] )\n\t\t{\n\t\t\treturn std::strncmp(t,prefix,sizeof(prefix)-1)==0 ? t+sizeof(prefix)-1 : t;\n\t\t}\n\t}\n\n\ttemplate \n\tchar const * type() noexcept\n\t{\n\tchar const * t =\n#ifdef __FUNCSIG__\n\t\t__FUNCSIG__;\n#else\n\t\t__PRETTY_FUNCTION__;\n#endif\n#if defined(__clang__)\n\t\tassert(leaf_detail::check_prefix(t,\"const char *boost::leaf::type() \")==t+32);\n\t\treturn t+32;\n#elif defined(__GNUC__)\n\t\tassert(leaf_detail::check_prefix(t,\"const char* boost::leaf::type() \")==t+32);\n\t\treturn t+32;\n#else\n\t\tchar const * clang_style = leaf_detail::check_prefix(t,\"const char *boost::leaf::type() \");\n\t\tif( clang_style!=t )\n\t\t\treturn clang_style;\n\t\tchar const * gcc_style = leaf_detail::check_prefix(t,\"const char* boost::leaf::type() \");\n\t\tif( gcc_style!=t )\n\t\t\treturn gcc_style;\n#endif\n\t\treturn t;\n\t}\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct is_printable: std::false_type\n\t\t{\n\t\t};\n\n\t\ttemplate \n\t\tstruct is_printable()<(), void())>: std::true_type\n\t\t{\n\t\t};\n\n\t\t////////////////////////////////////////\n\n\t\ttemplate \n\t\tstruct has_printable_member_value: std::false_type\n\t\t{\n\t\t};\n\n\t\ttemplate \n\t\tstruct has_printable_member_value()<().value, void())>: std::true_type\n\t\t{\n\t\t};\n\n\t\t////////////////////////////////////////\n\n\t\ttemplate ::value, bool ValuePrintable=has_printable_member_value::value>\n\t\tstruct diagnostic;\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & x )\n\t\t\t{\n\t\t\t\tos << x;\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & x )\n\t\t\t{\n\t\t\t\tos << type() << \": \" << x.value;\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & )\n\t\t\t{\n\t\t\t\tos << type() << \": N/A\";\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, std::exception_ptr const & )\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/print.hpp\n//<<<<<<<<\n#include \n#include \n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\tclass id_factory\n\t\t{\n\t\t\tid_factory( id_factory const & ) = delete;\n\t\t\tid_factory & operator=( id_factory const & ) = delete;\n\n\t\t\tstatic int new_err_id() noexcept\n\t\t\t{\n\t\t\t\tstatic std::atomic c;\n\t\t\t\tif( unsigned id = ++c )\n\t\t\t\t\treturn int(id);\n\t\t\t\telse\n\t\t\t\t\treturn int(++c);\n\t\t\t}\n\n\t\t\tint next_id_;\n\t\t\tint last_id_;\n\n\t\t\tid_factory() noexcept:\n\t\t\t\tnext_id_(new_err_id()),\n\t\t\t\tlast_id_(next_id_-1)\n\t\t\t{\n\t\t\t}\n\n\t\tpublic:\n\n\t\t\tstatic id_factory & tl_instance() noexcept\n\t\t\t{\n\t\t\t\tstatic thread_local id_factory s;\n\t\t\t\treturn s;\n\t\t\t}\n\n\t\t\tint last_id() noexcept\n\t\t\t{\n\t\t\t\treturn last_id_;\n\t\t\t}\n\n\t\t\tint new_id() noexcept\n\t\t\t{\n\t\t\t\tint id = last_id_ = next_id_;\n\t\t\t\tnext_id_ = new_err_id();\n\t\t\t\treturn id;\n\t\t\t}\n\n\t\t\tint next_id() noexcept\n\t\t\t{\n\t\t\t\treturn next_id_;\n\t\t\t}\n\t\t};\n\n\t\tinline int last_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().last_id();\n\t\t}\n\n\t\tinline int new_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().new_id();\n\t\t}\n\n\t\tinline int next_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().next_id();\n\t\t}\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\tclass slot_base\n\t\t{\n\t\t\tslot_base( slot_base const & ) = delete;\n\t\t\tslot_base & operator=( slot_base const & ) = delete;\n\n\t\t\tvirtual bool slot_print( std::ostream &, int err_id ) const = 0;\n\n\t\tpublic:\n\n\t\t\tstatic void print( std::ostream & os, int err_id )\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t\tfor( slot_base const * p = first(); p; p=p->next_ )\n\t\t\t\t\tif( p->slot_print(os,err_id) )\n\t\t\t\t\t\tos << std::endl;\n\t\t\t}\n\n\t\tprotected:\n\n\t\t\tstatic slot_base const * & first() noexcept\n\t\t\t{\n\t\t\t\tstatic thread_local slot_base const * p = 0;\n\t\t\t\treturn p;\n\t\t\t}\n\n\t\t\tslot_base const * const next_;\n\n\t\t\tslot_base() noexcept:\n\t\t\t\tnext_(first())\n\t\t\t{\n\t\t\t\tfirst() = this;\n\t\t\t}\n\n\t\t\t~slot_base() noexcept\n\t\t\t{\n\t\t\t\tslot_base const * & p = first();\n\t\t\t\tassert(p==this);\n\t\t\t\tp = next_;\n\t\t\t}\n\t\t};\n\t}\n\n\t////////////////////////////////////////\n\n\tclass error_id;\n\tnamespace leaf_detail { class captured_exception; }\n\n\tclass error_info\n\t{\n\t\terror_info( error_info const & ) = delete;\n\t\terror_info & operator=( error_info const & ) = delete;\n\n\t\tint const err_id_;\n\t\tstd::exception const * const ex_;\n\t\tleaf_detail::captured_exception const * const cap_;\n\t\tvoid (* const print_ex_)( std::ostream &, std::exception const *, leaf_detail::captured_exception const * );\n\n\tpublic:\n\n\t\texplicit error_info( int err_id ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(0),\n\t\t\tcap_(0),\n\t\t\tprint_ex_(0)\n\t\t{\n\t\t}\n\n\t\terror_info( int err_id, std::exception const * ex, void (*print_ex)(std::ostream &, std::exception const *, leaf_detail::captured_exception const *) ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(ex),\n\t\t\tcap_(0),\n\t\t\tprint_ex_(print_ex)\n\t\t{\n\t\t\tassert(print_ex_!=0);\n\t\t}\n\n\t\terror_info( int err_id, std::exception const * ex, leaf_detail::captured_exception const * cap, void (*print_ex)(std::ostream &, std::exception const *, leaf_detail::captured_exception const *) ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(ex),\n\t\t\tcap_(cap),\n\t\t\tprint_ex_(print_ex)\n\t\t{\n\t\t\tassert(print_ex_!=0);\n\t\t}\n\n\t\tint err_id() const noexcept\n\t\t{\n\t\t\treturn err_id_;\n\t\t}\n\n\t\tbool has_error() const noexcept\n\t\t{\n\t\t\treturn err_id_!=0;\n\t\t}\n\n\t\terror_id error() const noexcept;\n\n\t\tbool has_exception() const noexcept\n\t\t{\n\t\t\treturn print_ex_!=0;\n\t\t}\n\n\t\tstd::exception const * exception() const noexcept\n\t\t{\n\t\t\tassert(has_exception());\n\t\t\treturn ex_;\n\t\t}\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, error_info const & x )\n\t\t{\n\t\t\tos << \"LEAF Error ID: \" << x.err_id_ << std::endl;\n\t\t\tif( x.print_ex_ )\n\t\t\t\tx.print_ex_(os,x.ex_,x.cap_);\n\t\t\tleaf_detail::slot_base::print(os,x.err_id_);\n\t\t\treturn os;\n\t\t}\n\t};\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct has_data_member_value\n\t\t{\n\t\t\tstatic constexpr bool value=false;\n\t\t};\n\n\t\ttemplate \n\t\tstruct has_data_member_value().value, void())>\n\t\t{\n\t\t\tstatic constexpr bool value=std::is_member_object_pointer::value;\n\t\t};\n\n\t\ttemplate \n\t\tstruct is_error_type_default\n\t\t{\n\t\t\tstatic constexpr bool value = has_data_member_value::value || std::is_base_of::value;\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\t}\n\n\ttemplate \n\tstruct is_error_type: leaf_detail::is_error_type_default\n\t{\n\t};\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\tclass monitor_base\n\t\t{\n\t\t\tmonitor_base( monitor_base const & ) = delete;\n\t\t\tmonitor_base & operator=( monitor_base const & ) = delete;\n\n\t\t\tmutable error_info const * ei_;\n\n\t\tprotected:\n\n\t\t\tmonitor_base() noexcept:\n\t\t\t\tei_(0)\n\t\t\t{\n\t\t\t}\n\n\t\t\tmonitor_base( monitor_base && x ) noexcept:\n\t\t\t\tei_(0)\n\t\t\t{\n\t\t\t\tx.ei_ = 0;\n\t\t\t}\n\n\t\t\tvoid set_error_info( error_info const & ei ) const noexcept\n\t\t\t{\n\t\t\t\tei_ = &ei;\n\t\t\t}\n\n\t\t\terror_info const & get_error_info() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn *ei_;\n\t\t\t}\n\n\t\tpublic:\n\n\t\t\tbool has_error() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->has_error();\n\t\t\t}\n\n\t\t\terror_id error() const noexcept;\n\n\t\t\tbool has_exception() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->has_exception();\n\t\t\t}\n\n\t\t\tstd::exception const * exception() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->exception();\n\t\t\t}\n\t\t};\n\t}\n\n\tclass diagnostic_info: leaf_detail::monitor_base\n\t{\n\tpublic:\n\n\t\tchar const * (*first_type)();\n\t\tint count;\n\n\t\texplicit diagnostic_info( char const * (*first_type)() ) noexcept:\n\t\t\tfirst_type(first_type),\n\t\t\tcount(1)\n\t\t{\n\t\t}\n\n\t\tusing monitor_base::set_error_info;\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, diagnostic_info const & x )\n\t\t{\n\t\t\tassert(x.first_type!=0);\n\t\t\tassert(x.count>0);\n\t\t\tos << x.get_error_info() << \"diagnostic_info: Detected \";\n\t\t\tif( x.count==1 )\n\t\t\t\tos << \"1 attempt to communicate an E-object\";\n\t\t\telse\n\t\t\t\tos << x.count << \" attempts to communicate unexpected E-objects, the first one\";\n\t\t\treturn os << \" of type \" << x.first_type() << std::endl;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, diagnostic_info const & ) noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t}\n\n\tclass verbose_diagnostic_info: leaf_detail::monitor_base\n\t{\n\t\tstd::string s_;\n\t\tstd::set already_;\n\n\tpublic:\n\n\t\tverbose_diagnostic_info() noexcept\n\t\t{\n\t\t}\n\n\t\tusing monitor_base::set_error_info;\n\n\t\tvoid reset() noexcept\n\t\t{\n\t\t\ts_.clear();\n\t\t\talready_.clear();\n\t\t}\n\n\t\ttemplate \n\t\tvoid add( E const & e )\n\t\t{\n\t\t\tstd::stringstream s;\n\t\t\tif( leaf_detail::diagnostic::print(s,e) && already_.insert(&type).second )\n\t\t\t{\n\t\t\t\ts << std::endl;\n\t\t\t\ts_ += s.str();\n\t\t\t}\n\t\t}\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, verbose_diagnostic_info const & x )\n\t\t{\n\t\t\tos <<\n\t\t\t\tx.get_error_info() <<\n\t\t\t\t\"verbose_diagnostic_info:\" << std::endl <<\n\t\t\t\tx.s_;\n\t\t\treturn os;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, verbose_diagnostic_info const & ) noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct id_e_pair\n\t\t{\n\t\t\tint err_id;\n\t\t\tE e;\n\n\t\t\texplicit id_e_pair( int err_id ) noexcept:\n\t\t\t\terr_id(err_id)\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\n\t\t\tid_e_pair( int err_id, E const & e ):\n\t\t\t\terr_id(err_id),\n\t\t\t\te(e)\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\n\t\t\tid_e_pair( int err_id, E && e ) noexcept:\n\t\t\t\terr_id(err_id),\n\t\t\t\te(std::forward(e))\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\t\t};\n\n\t\tinline int & tl_unexpected_enabled_counter() noexcept\n\t\t{\n\t\t\tstatic thread_local int c;\n\t\t\treturn c;\n\t\t}\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tclass slot:\n\t\t\tslot_base,\n\t\t\toptional>\n\t\t{\n\t\t\tslot( slot const & ) = delete;\n\t\t\tslot & operator=( slot const & ) = delete;\n\t\t\ttypedef optional> base;\n\t\t\tslot * prev_;\n\t\t\tstatic_assert(is_error_type::value,\"Not an error type\");\n\n\t\t\tbool slot_print( std::ostream &, int err_id ) const;\n\n\t\tprotected:\n\n\t\t\tslot() noexcept;\n\t\t\t~slot() noexcept;\n\n\t\tpublic:\n\n\t\t\tusing base::put;\n\t\t\tusing base::has_value;\n\t\t\tusing base::value;\n\t\t\tusing base::reset;\n\t\t\tusing base::emplace;\n\t\t};\n\n\t\ttemplate \n\t\tslot * & tl_slot_ptr() noexcept\n\t\t{\n\t\t\tstatic thread_local slot * s;\n\t\t\treturn s;\n\t\t}\n\n\t\ttemplate \n\t\tvoid put_unexpected( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tif( slot * p = tl_slot_ptr() )\n\t\t\t{\n\t\t\t\tif( p->has_value() )\n\t\t\t\t{\n\t\t\t\t\tauto & p_id_e = p->value();\n\t\t\t\t\tif( p_id_e.err_id==id_e.err_id )\n\t\t\t\t\t{\n\t\t\t\t\t\t++p_id_e.e.count;\n\t\t\t\t\t\treturn;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\t(void) p->put( id_e_pair(id_e.err_id,diagnostic_info(&type)) );\n\t\t\t}\n\t\t}\n\n\t\ttemplate \n\t\tvoid put_verbose_diagnostic_info( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tif( slot * sl = tl_slot_ptr() )\n\t\t\t{\n\t\t\t\tif( auto * pv = sl->has_value() )\n\t\t\t\t{\n\t\t\t\t\tif( pv->err_id!=id_e.err_id )\n\t\t\t\t\t{\n\t\t\t\t\t\tpv->err_id = id_e.err_id;\n\t\t\t\t\t\tpv->e.reset();\n\t\t\t\t\t}\n\t\t\t\t\tpv->e.add(id_e.e);\n\t\t\t\t}\n\t\t\t\telse\n\t\t\t\t\tsl->emplace(id_e.err_id).e.add(id_e.e);\n\t\t\t}\n\t\t}\n\n\t\ttemplate \n\t\tvoid no_expect_slot( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tput_unexpected(id_e);\n\t\t\tput_verbose_diagnostic_info(id_e);\n\t\t}\n\n\t\ttemplate \n\t\tint put_slot( int err_id, E && e ) noexcept\n\t\t{\n\t\t\tusing T = typename std::remove_cv::type>::type;\n\t\t\tassert(err_id);\n\t\t\tif( slot * p = tl_slot_ptr() )\n\t\t\t\t(void) p->put( id_e_pair(err_id,std::forward(e)) );\n\t\t\telse\n\t\t\t{\n\t\t\t\tint c = tl_unexpected_enabled_counter();\n\t\t\t\tassert(c>=0);\n\t\t\t\tif( c )\n\t\t\t\t\tno_expect_slot( id_e_pair(err_id,std::forward(e)) );\n\t\t\t}\n\t\t\treturn 0;\n\t\t}\n\n\t\ttemplate \n\t\tslot::slot() noexcept\n\t\t{\n\t\t\tslot * & p = tl_slot_ptr();\n\t\t\tprev_ = p;\n\t\t\tp = this;\n\t\t}\n\n\t\ttemplate \n\t\tslot::~slot() noexcept\n\t\t{\n\t\t\tif( prev_ )\n\t\t\t{\n\t\t\t\toptional> & p = *prev_;\n\t\t\t\tp = std::move(*this);\n\t\t\t}\n\t\t\telse\n\t\t\t{\n\t\t\t\tint c = tl_unexpected_enabled_counter();\n\t\t\t\tassert(c>=0);\n\t\t\t\tif( c && has_value() )\n\t\t\t\t\tno_expect_slot(value());\n\t\t\t}\n\t\t\ttl_slot_ptr() = prev_;\n\t\t}\n\n\t\ttemplate \n\t\tbool slot::slot_print( std::ostream & os, int err_id ) const\n\t\t{\n\t\t\tassert(err_id);\n\t\t\tif( tl_slot_ptr()==this )\n\t\t\t\tif( id_e_pair const * id_e = has_value() )\n\t\t\t\t\tif( id_e->err_id==err_id )\n\t\t\t\t\t\treturn diagnostice)>::print(os,id_e->e);\n\t\t\treturn false;\n\t\t}\n\n\t\tenum class result_variant\n\t\t{\n\t\t\tvalue,\n\t\t\terr_id,\n\t\t\tcap\n\t\t};\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/teleport.hpp\n//<<<<<<<<\n#include \n\n#define LEAF_ERROR(...) ::boost::leaf::leaf_detail::new_error_at(__FILE__,__LINE__,__FUNCTION__,__VA_ARGS__)\n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\tclass error_category: public std::error_category\n\t\t{\n\t\t\tbool equivalent( int, std::error_condition const & ) const noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\tbool equivalent( std::error_code const &, int ) const noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\tchar const * name() const noexcept\n\t\t\t{\n\t\t\t\treturn \"LEAF error, use with leaf::handle_some or leaf::handle_all.\";\n\t\t\t}\n\n\t\t\tstd::string message( int condition ) const\n\t\t\t{\n\t\t\t\treturn name();\n\t\t\t}\n\t\t};\n\n\t\tinline error_category const & get_error_category() noexcept\n\t\t{\n\t\t\tstatic error_category cat;\n\t\t\treturn cat;\n\t\t}\n\t}\n\n\tinline bool is_error_id( std::error_code const & ec )\n\t{\n\t\treturn &ec.category() == &leaf_detail::get_error_category();\n\t}\n\n\t////////////////////////////////////////\n\n\tstruct e_original_ec { std::error_code value; };\n\n\tclass error_id: public std::error_code\n\t{\n\t\ttemplate \n\t\tstatic std::error_code import( ErrorCode && ec ) noexcept\n\t\t{\n\t\t\tstd::error_category const & cat = leaf_detail::get_error_category();\n\t\t\tif( ec && &ec.category()!=&cat )\n\t\t\t{\n\t\t\t\tint err_id = leaf_detail::new_id();\n\t\t\t\tleaf_detail::put_slot(err_id, e_original_ec{ec});\n\t\t\t\treturn std::error_code(err_id, cat);\n\t\t\t}\n\t\t\telse\n\t\t\t\treturn ec;\n\t\t}\n\n\tpublic:\n\n\t\terror_id() noexcept = default;\n\n\t\ttemplate \n\t\terror_id( std::error_code const & ec, E && ... e ) noexcept:\n\t\t\terror_code(import(ec))\n\t\t{\n\t\t\t(void) propagate(std::forward(e)...);\n\t\t}\n\n\t\ttemplate \n\t\terror_id( std::error_code && ec, E && ... e ) noexcept:\n\t\t\terror_code(import(std::move(ec)))\n\t\t{\n\t\t\t(void) propagate(std::forward(e)...);\n\t\t}\n\n\t\terror_id propagate() const noexcept\n\t\t{\n\t\t\tassert(is_error_id(*this));\n\t\t\treturn *this;\n\t\t}\n\n\t\ttemplate \n\t\terror_id propagate( E && ... e ) const noexcept\n\t\t{\n\t\t\tassert(is_error_id(*this));\n\t\t\tauto _ = { leaf_detail::put_slot(value(), std::forward(e))... };\n\t\t\t(void) _;\n\t\t\treturn *this;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\tinline error_id make_error( int err_id )\n\t\t{\n\t\t\tassert(err_id);\n\t\t\treturn error_id(std::error_code(err_id, get_error_category()));\n\t\t}\n\t}\n\n\ttemplate \n\terror_id new_error( E && ... e ) noexcept\n\t{\n\t\treturn leaf_detail::make_error(leaf_detail::new_id()).propagate(std::forward(e)...);\n\t}\n\n\tinline error_id next_error() noexcept\n\t{\n\t\treturn leaf_detail::make_error(leaf_detail::next_id());\n\t}\n\n\tinline error_id error_info::error() const noexcept\n\t{\n\t\tassert(has_error());\n\t\treturn leaf_detail::make_error(err_id_);\n\t}\n\n\tinline error_id leaf_detail::monitor_base::error() const noexcept\n\t{\n\t\tassert(ei_!=0);\n\t\treturn ei_->error();\n\t}\n\n\t////////////////////////////////////////\n\n\tstruct e_source_location\n\t{\n\t\tchar const * const file;\n\t\tint const line;\n\t\tchar const * const function;\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, e_source_location const & x )\n\t\t{\n\t\t\treturn os << leaf::type() << \": \" << x.file << '(' << x.line << \") in function \" << x.function;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <> struct is_error_type_default: std::true_type { };\n\n\t\ttemplate \n\t\terror_id new_error_at( char const * file, int line, char const * function, E && ... e ) noexcept\n\t\t{\n\t\t\tassert(file&&*file);\n\t\t\tassert(line>0);\n\t\t\tassert(function&&*function);\n\t\t\te_source_location sl { file, line, function }; // Temp object MSVC workaround\n\t\t\treturn new_error( std::move(sl), std::forward(e)... );\n\t\t}\n\t}\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/error.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/throw_exception.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/throw_exception.hpp\"\n#ifndef BOOST_LEAF_68F2D7C61AA111E9952B34BE67511AEB\n#define BOOST_LEAF_68F2D7C61AA111E9952B34BE67511AEB\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n#include \n\n#if defined(LEAF_NO_EXCEPTIONS) || defined(BOOST_EXCEPTIONS)\n\nnamespace boost\n{\n\t[[noreturn]] void throw_exception( std::exception const & ); // user defined\n}\n\nnamespace boost { namespace leaf {\n\n\ttemplate \n\t[[noreturn]] void throw_exception( T const & e )\n\t{\n\t\t::boost::throw_exception(e);\n\t}\n\n} }\n\n#else\n\nnamespace boost { namespace leaf {\n\n\ttemplate \n\t[[noreturn]] void throw_exception( T const & e )\n\t{\n\t\tthrow e;\n\t}\n\n} }\n\n#endif\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/throw_exception.hpp\n//<<<<<<<<\n#include \n\n#define LEAF_EXCEPTION(...) ::boost::leaf::leaf_detail::exception_at(__FILE__,__LINE__,__FUNCTION__,__VA_ARGS__)\n#define LEAF_THROW(...) ::boost::leaf::throw_exception(LEAF_EXCEPTION(__VA_ARGS__))\n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\tinline void enforce_std_exception( std::exception const & ) noexcept { }\n\n\t\ttemplate \n\t\tclass exception:\n\t\t\tpublic Ex,\n\t\t\tpublic error_id\n\t\t{\n\t\tpublic:\n\n\t\t\texception( exception const & ) = default;\n\t\t\texception( exception && ) = default;\n\n\t\t\ttemplate \n\t\t\texception( Ex && ex, E && ... e ) noexcept:\n\t\t\t\tEx(std::move(ex)),\n\t\t\t\terror_id(new_error(std::forward(e)...))\n\t\t\t{\n\t\t\t\tleaf_detail::enforce_std_exception(*this);\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\texception exception_at( char const * file, int line, char const * function, Ex && ex, E && ... e ) noexcept\n\t\t{\n\t\t\tassert(file&&*file);\n\t\t\tassert(line>0);\n\t\t\tassert(function&&*function);\n\t\t\treturn exception( std::forward(ex), e_source_location{file,line,function}, std::forward(e)... );\n\t\t}\n\t}\n\n\ttemplate \n\tleaf_detail::exception exception( Ex && ex, E && ... e ) noexcept\n\t{\n\t\treturn leaf_detail::exception( std::forward(ex), std::forward(e)... );\n\t}\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/throw.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/try.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/try.hpp\"\n#ifndef BOOST_LEAF_87F274C4D4BA11E89928D55AC82C3C47\n#define BOOST_LEAF_87F274C4D4BA11E89928D55AC82C3C47\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/handle.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/handle.hpp\"\n#ifndef BOOST_LEAF_73685B76115611E9950D61678B7F4AFC\n#define BOOST_LEAF_73685B76115611E9950D61678B7F4AFC\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/detail/static_store.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/static_store.hpp\"\n#ifndef BOOST_LEAF_AFBBD676B2FF11E8984C7976AE35F1A2\n#define BOOST_LEAF_AFBBD676B2FF11E8984C7976AE35F1A2\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/detail/teleport.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/teleport.hpp\"\n#ifndef BOOST_LEAF_B449A5821DA411E99B9A012588D1CC0E\n#define BOOST_LEAF_B449A5821DA411E99B9A012588D1CC0E\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/detail/optional.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/optional.hpp\"\n#ifndef BOOST_LEAF_47258FCCB6B411E8A1F35AA00C39171A\n#define BOOST_LEAF_47258FCCB6B411E8A1F35AA00C39171A\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tclass optional\n\t\t{\n\t\t\tunion { T value_; };\n\t\t\tbool has_value_;\n\n\t\tpublic:\n\n\t\t\ttypedef T value_type;\n\t\t\toptional() noexcept:\n\t\t\t\thas_value_(false)\n\t\t\t{\n\t\t\t}\n\n\t\t\toptional( optional const & x ):\n\t\t\t\thas_value_(x.has_value_)\n\t\t\t{\n\t\t\t\tif( x.has_value_ )\n\t\t\t\t\t(void) new (&value_) T( x.value_ );\n\t\t\t}\n\n\t\t\toptional( optional && x ) noexcept:\n\t\t\t\thas_value_(x.has_value_)\n\t\t\t{\n\t\t\t\tif( x.has_value_ )\n\t\t\t\t{\n\t\t\t\t\t(void) new (&value_) T( std::move(x.value_) );\n\t\t\t\t\tx.value_.~T();\n\t\t\t\t\tx.has_value_ = false;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\toptional( T const & v ):\n\t\t\t\tvalue_(v),\n\t\t\t\thas_value_(true)\n\t\t\t{\n\t\t\t}\n\n\t\t\toptional( T && v ) noexcept:\n\t\t\t\tvalue_(std::move(v)),\n\t\t\t\thas_value_(true)\n\t\t\t{\n\t\t\t}\n\n\t\t\toptional & operator=( optional const & x )\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\tif( x.has_value() )\n\t\t\t\t\tput(x.value());\n\t\t\t\treturn *this;\n\t\t\t}\n\n\t\t\toptional & operator=( optional && x ) noexcept\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\tif( x.has_value() )\n\t\t\t\t\tput(std::move(x).value());\n\t\t\t\treturn *this;\n\t\t\t}\n\n\t\t\t~optional() noexcept\n\t\t\t{\n\t\t\t\treset();\n\t\t\t}\n\n\t\t\tvoid reset() noexcept\n\t\t\t{\n\t\t\t\tif( has_value() )\n\t\t\t\t{\n\t\t\t\t\tvalue_.~T();\n\t\t\t\t\thas_value_=false;\n\t\t\t\t}\n\t\t\t}\n\n\t\t\ttemplate \n\t\t\tT & emplace( A && ... a )\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(std::forward (a)...);\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & put( T const & v )\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(v);\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & put( T && v ) noexcept\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(std::move(v));\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT const * has_value() const noexcept\n\t\t\t{\n\t\t\t\treturn has_value_ ? &value_ : 0;\n\t\t\t}\n\n\t\t\tT * has_value() noexcept\n\t\t\t{\n\t\t\t\treturn has_value_ ? &value_ : 0;\n\t\t\t}\n\n\t\t\tT const & value() const & noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & value() & noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT const && value() const && noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT value() && noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\tT tmp(std::move(value_));\n\t\t\t\treset();\n\t\t\t\treturn tmp;\n\t\t\t}\n\t\t};\n\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/optional.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/detail/print.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/print.hpp\"\n#ifndef BOOST_LEAF_3BAB50A2B87E11E89EEB30600C39171A\n#define BOOST_LEAF_3BAB50A2B87E11E89EEB30600C39171A\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tinline char const * check_prefix( char const * t, char const (&prefix)[N] )\n\t\t{\n\t\t\treturn std::strncmp(t,prefix,sizeof(prefix)-1)==0 ? t+sizeof(prefix)-1 : t;\n\t\t}\n\t}\n\n\ttemplate \n\tchar const * type() noexcept\n\t{\n\tchar const * t =\n#ifdef __FUNCSIG__\n\t\t__FUNCSIG__;\n#else\n\t\t__PRETTY_FUNCTION__;\n#endif\n#if defined(__clang__)\n\t\tassert(leaf_detail::check_prefix(t,\"const char *boost::leaf::type() \")==t+32);\n\t\treturn t+32;\n#elif defined(__GNUC__)\n\t\tassert(leaf_detail::check_prefix(t,\"const char* boost::leaf::type() \")==t+32);\n\t\treturn t+32;\n#else\n\t\tchar const * clang_style = leaf_detail::check_prefix(t,\"const char *boost::leaf::type() \");\n\t\tif( clang_style!=t )\n\t\t\treturn clang_style;\n\t\tchar const * gcc_style = leaf_detail::check_prefix(t,\"const char* boost::leaf::type() \");\n\t\tif( gcc_style!=t )\n\t\t\treturn gcc_style;\n#endif\n\t\treturn t;\n\t}\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct is_printable: std::false_type\n\t\t{\n\t\t};\n\n\t\ttemplate \n\t\tstruct is_printable()<(), void())>: std::true_type\n\t\t{\n\t\t};\n\n\t\t////////////////////////////////////////\n\n\t\ttemplate \n\t\tstruct has_printable_member_value: std::false_type\n\t\t{\n\t\t};\n\n\t\ttemplate \n\t\tstruct has_printable_member_value()<().value, void())>: std::true_type\n\t\t{\n\t\t};\n\n\t\t////////////////////////////////////////\n\n\t\ttemplate ::value, bool ValuePrintable=has_printable_member_value::value>\n\t\tstruct diagnostic;\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & x )\n\t\t\t{\n\t\t\t\tos << x;\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & x )\n\t\t\t{\n\t\t\t\tos << type() << \": \" << x.value;\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & )\n\t\t\t{\n\t\t\t\tos << type() << \": N/A\";\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, std::exception_ptr const & )\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/print.hpp\n//<<<<<<<<\n#include \n#include \n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\tclass id_factory\n\t\t{\n\t\t\tid_factory( id_factory const & ) = delete;\n\t\t\tid_factory & operator=( id_factory const & ) = delete;\n\n\t\t\tstatic int new_err_id() noexcept\n\t\t\t{\n\t\t\t\tstatic std::atomic c;\n\t\t\t\tif( unsigned id = ++c )\n\t\t\t\t\treturn int(id);\n\t\t\t\telse\n\t\t\t\t\treturn int(++c);\n\t\t\t}\n\n\t\t\tint next_id_;\n\t\t\tint last_id_;\n\n\t\t\tid_factory() noexcept:\n\t\t\t\tnext_id_(new_err_id()),\n\t\t\t\tlast_id_(next_id_-1)\n\t\t\t{\n\t\t\t}\n\n\t\tpublic:\n\n\t\t\tstatic id_factory & tl_instance() noexcept\n\t\t\t{\n\t\t\t\tstatic thread_local id_factory s;\n\t\t\t\treturn s;\n\t\t\t}\n\n\t\t\tint last_id() noexcept\n\t\t\t{\n\t\t\t\treturn last_id_;\n\t\t\t}\n\n\t\t\tint new_id() noexcept\n\t\t\t{\n\t\t\t\tint id = last_id_ = next_id_;\n\t\t\t\tnext_id_ = new_err_id();\n\t\t\t\treturn id;\n\t\t\t}\n\n\t\t\tint next_id() noexcept\n\t\t\t{\n\t\t\t\treturn next_id_;\n\t\t\t}\n\t\t};\n\n\t\tinline int last_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().last_id();\n\t\t}\n\n\t\tinline int new_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().new_id();\n\t\t}\n\n\t\tinline int next_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().next_id();\n\t\t}\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\tclass slot_base\n\t\t{\n\t\t\tslot_base( slot_base const & ) = delete;\n\t\t\tslot_base & operator=( slot_base const & ) = delete;\n\n\t\t\tvirtual bool slot_print( std::ostream &, int err_id ) const = 0;\n\n\t\tpublic:\n\n\t\t\tstatic void print( std::ostream & os, int err_id )\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t\tfor( slot_base const * p = first(); p; p=p->next_ )\n\t\t\t\t\tif( p->slot_print(os,err_id) )\n\t\t\t\t\t\tos << std::endl;\n\t\t\t}\n\n\t\tprotected:\n\n\t\t\tstatic slot_base const * & first() noexcept\n\t\t\t{\n\t\t\t\tstatic thread_local slot_base const * p = 0;\n\t\t\t\treturn p;\n\t\t\t}\n\n\t\t\tslot_base const * const next_;\n\n\t\t\tslot_base() noexcept:\n\t\t\t\tnext_(first())\n\t\t\t{\n\t\t\t\tfirst() = this;\n\t\t\t}\n\n\t\t\t~slot_base() noexcept\n\t\t\t{\n\t\t\t\tslot_base const * & p = first();\n\t\t\t\tassert(p==this);\n\t\t\t\tp = next_;\n\t\t\t}\n\t\t};\n\t}\n\n\t////////////////////////////////////////\n\n\tclass error_id;\n\tnamespace leaf_detail { class captured_exception; }\n\n\tclass error_info\n\t{\n\t\terror_info( error_info const & ) = delete;\n\t\terror_info & operator=( error_info const & ) = delete;\n\n\t\tint const err_id_;\n\t\tstd::exception const * const ex_;\n\t\tleaf_detail::captured_exception const * const cap_;\n\t\tvoid (* const print_ex_)( std::ostream &, std::exception const *, leaf_detail::captured_exception const * );\n\n\tpublic:\n\n\t\texplicit error_info( int err_id ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(0),\n\t\t\tcap_(0),\n\t\t\tprint_ex_(0)\n\t\t{\n\t\t}\n\n\t\terror_info( int err_id, std::exception const * ex, void (*print_ex)(std::ostream &, std::exception const *, leaf_detail::captured_exception const *) ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(ex),\n\t\t\tcap_(0),\n\t\t\tprint_ex_(print_ex)\n\t\t{\n\t\t\tassert(print_ex_!=0);\n\t\t}\n\n\t\terror_info( int err_id, std::exception const * ex, leaf_detail::captured_exception const * cap, void (*print_ex)(std::ostream &, std::exception const *, leaf_detail::captured_exception const *) ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(ex),\n\t\t\tcap_(cap),\n\t\t\tprint_ex_(print_ex)\n\t\t{\n\t\t\tassert(print_ex_!=0);\n\t\t}\n\n\t\tint err_id() const noexcept\n\t\t{\n\t\t\treturn err_id_;\n\t\t}\n\n\t\tbool has_error() const noexcept\n\t\t{\n\t\t\treturn err_id_!=0;\n\t\t}\n\n\t\terror_id error() const noexcept;\n\n\t\tbool has_exception() const noexcept\n\t\t{\n\t\t\treturn print_ex_!=0;\n\t\t}\n\n\t\tstd::exception const * exception() const noexcept\n\t\t{\n\t\t\tassert(has_exception());\n\t\t\treturn ex_;\n\t\t}\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, error_info const & x )\n\t\t{\n\t\t\tos << \"LEAF Error ID: \" << x.err_id_ << std::endl;\n\t\t\tif( x.print_ex_ )\n\t\t\t\tx.print_ex_(os,x.ex_,x.cap_);\n\t\t\tleaf_detail::slot_base::print(os,x.err_id_);\n\t\t\treturn os;\n\t\t}\n\t};\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct has_data_member_value\n\t\t{\n\t\t\tstatic constexpr bool value=false;\n\t\t};\n\n\t\ttemplate \n\t\tstruct has_data_member_value().value, void())>\n\t\t{\n\t\t\tstatic constexpr bool value=std::is_member_object_pointer::value;\n\t\t};\n\n\t\ttemplate \n\t\tstruct is_error_type_default\n\t\t{\n\t\t\tstatic constexpr bool value = has_data_member_value::value || std::is_base_of::value;\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\t}\n\n\ttemplate \n\tstruct is_error_type: leaf_detail::is_error_type_default\n\t{\n\t};\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\tclass monitor_base\n\t\t{\n\t\t\tmonitor_base( monitor_base const & ) = delete;\n\t\t\tmonitor_base & operator=( monitor_base const & ) = delete;\n\n\t\t\tmutable error_info const * ei_;\n\n\t\tprotected:\n\n\t\t\tmonitor_base() noexcept:\n\t\t\t\tei_(0)\n\t\t\t{\n\t\t\t}\n\n\t\t\tmonitor_base( monitor_base && x ) noexcept:\n\t\t\t\tei_(0)\n\t\t\t{\n\t\t\t\tx.ei_ = 0;\n\t\t\t}\n\n\t\t\tvoid set_error_info( error_info const & ei ) const noexcept\n\t\t\t{\n\t\t\t\tei_ = &ei;\n\t\t\t}\n\n\t\t\terror_info const & get_error_info() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn *ei_;\n\t\t\t}\n\n\t\tpublic:\n\n\t\t\tbool has_error() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->has_error();\n\t\t\t}\n\n\t\t\terror_id error() const noexcept;\n\n\t\t\tbool has_exception() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->has_exception();\n\t\t\t}\n\n\t\t\tstd::exception const * exception() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->exception();\n\t\t\t}\n\t\t};\n\t}\n\n\tclass diagnostic_info: leaf_detail::monitor_base\n\t{\n\tpublic:\n\n\t\tchar const * (*first_type)();\n\t\tint count;\n\n\t\texplicit diagnostic_info( char const * (*first_type)() ) noexcept:\n\t\t\tfirst_type(first_type),\n\t\t\tcount(1)\n\t\t{\n\t\t}\n\n\t\tusing monitor_base::set_error_info;\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, diagnostic_info const & x )\n\t\t{\n\t\t\tassert(x.first_type!=0);\n\t\t\tassert(x.count>0);\n\t\t\tos << x.get_error_info() << \"diagnostic_info: Detected \";\n\t\t\tif( x.count==1 )\n\t\t\t\tos << \"1 attempt to communicate an E-object\";\n\t\t\telse\n\t\t\t\tos << x.count << \" attempts to communicate unexpected E-objects, the first one\";\n\t\t\treturn os << \" of type \" << x.first_type() << std::endl;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, diagnostic_info const & ) noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t}\n\n\tclass verbose_diagnostic_info: leaf_detail::monitor_base\n\t{\n\t\tstd::string s_;\n\t\tstd::set already_;\n\n\tpublic:\n\n\t\tverbose_diagnostic_info() noexcept\n\t\t{\n\t\t}\n\n\t\tusing monitor_base::set_error_info;\n\n\t\tvoid reset() noexcept\n\t\t{\n\t\t\ts_.clear();\n\t\t\talready_.clear();\n\t\t}\n\n\t\ttemplate \n\t\tvoid add( E const & e )\n\t\t{\n\t\t\tstd::stringstream s;\n\t\t\tif( leaf_detail::diagnostic::print(s,e) && already_.insert(&type).second )\n\t\t\t{\n\t\t\t\ts << std::endl;\n\t\t\t\ts_ += s.str();\n\t\t\t}\n\t\t}\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, verbose_diagnostic_info const & x )\n\t\t{\n\t\t\tos <<\n\t\t\t\tx.get_error_info() <<\n\t\t\t\t\"verbose_diagnostic_info:\" << std::endl <<\n\t\t\t\tx.s_;\n\t\t\treturn os;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, verbose_diagnostic_info const & ) noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct id_e_pair\n\t\t{\n\t\t\tint err_id;\n\t\t\tE e;\n\n\t\t\texplicit id_e_pair( int err_id ) noexcept:\n\t\t\t\terr_id(err_id)\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\n\t\t\tid_e_pair( int err_id, E const & e ):\n\t\t\t\terr_id(err_id),\n\t\t\t\te(e)\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\n\t\t\tid_e_pair( int err_id, E && e ) noexcept:\n\t\t\t\terr_id(err_id),\n\t\t\t\te(std::forward(e))\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\t\t};\n\n\t\tinline int & tl_unexpected_enabled_counter() noexcept\n\t\t{\n\t\t\tstatic thread_local int c;\n\t\t\treturn c;\n\t\t}\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tclass slot:\n\t\t\tslot_base,\n\t\t\toptional>\n\t\t{\n\t\t\tslot( slot const & ) = delete;\n\t\t\tslot & operator=( slot const & ) = delete;\n\t\t\ttypedef optional> base;\n\t\t\tslot * prev_;\n\t\t\tstatic_assert(is_error_type::value,\"Not an error type\");\n\n\t\t\tbool slot_print( std::ostream &, int err_id ) const;\n\n\t\tprotected:\n\n\t\t\tslot() noexcept;\n\t\t\t~slot() noexcept;\n\n\t\tpublic:\n\n\t\t\tusing base::put;\n\t\t\tusing base::has_value;\n\t\t\tusing base::value;\n\t\t\tusing base::reset;\n\t\t\tusing base::emplace;\n\t\t};\n\n\t\ttemplate \n\t\tslot * & tl_slot_ptr() noexcept\n\t\t{\n\t\t\tstatic thread_local slot * s;\n\t\t\treturn s;\n\t\t}\n\n\t\ttemplate \n\t\tvoid put_unexpected( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tif( slot * p = tl_slot_ptr() )\n\t\t\t{\n\t\t\t\tif( p->has_value() )\n\t\t\t\t{\n\t\t\t\t\tauto & p_id_e = p->value();\n\t\t\t\t\tif( p_id_e.err_id==id_e.err_id )\n\t\t\t\t\t{\n\t\t\t\t\t\t++p_id_e.e.count;\n\t\t\t\t\t\treturn;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\t(void) p->put( id_e_pair(id_e.err_id,diagnostic_info(&type)) );\n\t\t\t}\n\t\t}\n\n\t\ttemplate \n\t\tvoid put_verbose_diagnostic_info( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tif( slot * sl = tl_slot_ptr() )\n\t\t\t{\n\t\t\t\tif( auto * pv = sl->has_value() )\n\t\t\t\t{\n\t\t\t\t\tif( pv->err_id!=id_e.err_id )\n\t\t\t\t\t{\n\t\t\t\t\t\tpv->err_id = id_e.err_id;\n\t\t\t\t\t\tpv->e.reset();\n\t\t\t\t\t}\n\t\t\t\t\tpv->e.add(id_e.e);\n\t\t\t\t}\n\t\t\t\telse\n\t\t\t\t\tsl->emplace(id_e.err_id).e.add(id_e.e);\n\t\t\t}\n\t\t}\n\n\t\ttemplate \n\t\tvoid no_expect_slot( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tput_unexpected(id_e);\n\t\t\tput_verbose_diagnostic_info(id_e);\n\t\t}\n\n\t\ttemplate \n\t\tint put_slot( int err_id, E && e ) noexcept\n\t\t{\n\t\t\tusing T = typename std::remove_cv::type>::type;\n\t\t\tassert(err_id);\n\t\t\tif( slot * p = tl_slot_ptr() )\n\t\t\t\t(void) p->put( id_e_pair(err_id,std::forward(e)) );\n\t\t\telse\n\t\t\t{\n\t\t\t\tint c = tl_unexpected_enabled_counter();\n\t\t\t\tassert(c>=0);\n\t\t\t\tif( c )\n\t\t\t\t\tno_expect_slot( id_e_pair(err_id,std::forward(e)) );\n\t\t\t}\n\t\t\treturn 0;\n\t\t}\n\n\t\ttemplate \n\t\tslot::slot() noexcept\n\t\t{\n\t\t\tslot * & p = tl_slot_ptr();\n\t\t\tprev_ = p;\n\t\t\tp = this;\n\t\t}\n\n\t\ttemplate \n\t\tslot::~slot() noexcept\n\t\t{\n\t\t\tif( prev_ )\n\t\t\t{\n\t\t\t\toptional> & p = *prev_;\n\t\t\t\tp = std::move(*this);\n\t\t\t}\n\t\t\telse\n\t\t\t{\n\t\t\t\tint c = tl_unexpected_enabled_counter();\n\t\t\t\tassert(c>=0);\n\t\t\t\tif( c && has_value() )\n\t\t\t\t\tno_expect_slot(value());\n\t\t\t}\n\t\t\ttl_slot_ptr() = prev_;\n\t\t}\n\n\t\ttemplate \n\t\tbool slot::slot_print( std::ostream & os, int err_id ) const\n\t\t{\n\t\t\tassert(err_id);\n\t\t\tif( tl_slot_ptr()==this )\n\t\t\t\tif( id_e_pair const * id_e = has_value() )\n\t\t\t\t\tif( id_e->err_id==err_id )\n\t\t\t\t\t\treturn diagnostice)>::print(os,id_e->e);\n\t\t\treturn false;\n\t\t}\n\n\t\tenum class result_variant\n\t\t{\n\t\t\tvalue,\n\t\t\terr_id,\n\t\t\tcap\n\t\t};\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/teleport.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/detail/function_traits.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/function_traits.hpp\"\n#ifndef BOOST_LEAF_14440B9CF07011E88377FD4B0ABE8030\n#define BOOST_LEAF_14440B9CF07011E88377FD4B0ABE8030\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/detail/mp11.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/mp11.hpp\"\n#ifndef BOOST_LEAF_91843B04108711E9AA4E56D98C7F4AFC\n#define BOOST_LEAF_91843B04108711E9AA4E56D98C7F4AFC\n\n// Copyright 2015-2017 Peter Dimov.\n// Copyright 2019 Emil Dotchevski.\n//\n// Distributed under the Boost Software License, Version 1.0.\n//\n// See accompanying file LICENSE_1_0.txt or copy at\n// http://www.boost.org/LICENSE_1_0.txt\n\n#include \n#include \n\nnamespace boost { namespace leaf { namespace leaf_detail_mp11 {\n\n// mp_list\ntemplate struct mp_list\n{\n};\n\n// mp_identity\ntemplate struct mp_identity\n{\n using type = T;\n};\n\n// mp_inherit\ntemplate struct mp_inherit: T... {};\n\n// mp_if, mp_if_c\nnamespace detail\n{\n\ntemplate struct mp_if_c_impl\n{\n};\n\ntemplate struct mp_if_c_impl\n{\n using type = T;\n};\n\ntemplate struct mp_if_c_impl\n{\n using type = E;\n};\n\n} // namespace detail\n\ntemplate using mp_if_c = typename detail::mp_if_c_impl::type;\ntemplate using mp_if = typename detail::mp_if_c_impl(C::value), T, E...>::type;\n\n// mp_bool\ntemplate using mp_bool = std::integral_constant;\n\nusing mp_true = mp_bool;\nusing mp_false = mp_bool;\n\n// mp_to_bool\ntemplate using mp_to_bool = mp_bool( T::value )>;\n\n// mp_not\ntemplate using mp_not = mp_bool< !T::value >;\n\n// mp_int\ntemplate using mp_int = std::integral_constant;\n\n// mp_size_t\ntemplate using mp_size_t = std::integral_constant;\n\n// mp_set_contains\nnamespace detail\n{\n\ntemplate struct mp_set_contains_impl;\n\ntemplate class L, class... T, class V> struct mp_set_contains_impl, V>\n{\n using type = mp_to_bool, mp_inherit...> > >;\n};\n\n} // namespace detail\n\ntemplate using mp_set_contains = typename detail::mp_set_contains_impl::type;\n\n// mp_set_push_back\nnamespace detail\n{\n\ntemplate struct mp_set_push_back_impl;\n\ntemplate class L, class... U> struct mp_set_push_back_impl>\n{\n using type = L;\n};\n\ntemplate class L, class... U, class T1, class... T> struct mp_set_push_back_impl, T1, T...>\n{\n using S = mp_if, T1>, L, L>;\n using type = typename mp_set_push_back_impl::type;\n};\n\n} // namespace detail\n\ntemplate using mp_set_push_back = typename detail::mp_set_push_back_impl::type;\n\n// mp_unique\nnamespace detail\n{\n\ntemplate struct mp_unique_impl;\n\ntemplate class L, class... T> struct mp_unique_impl>\n{\n using type = mp_set_push_back, T...>;\n};\n\n} // namespace detail\n\ntemplate using mp_unique = typename detail::mp_unique_impl::type;\n\n// mp_append\n\nnamespace detail\n{\n\ntemplate struct mp_append_impl;\n\ntemplate<> struct mp_append_impl<>\n{\n using type = mp_list<>;\n};\n\ntemplate class L, class... T> struct mp_append_impl>\n{\n using type = L;\n};\n\ntemplate class L1, class... T1, template class L2, class... T2, class... Lr> struct mp_append_impl, L2, Lr...>\n{\n using type = typename mp_append_impl, Lr...>::type;\n};\n\n}\n\ntemplate using mp_append = typename detail::mp_append_impl::type;\n\n// mp_front\nnamespace detail\n{\n\ntemplate struct mp_front_impl\n{\n// An error \"no type named 'type'\" here means that the argument to mp_front\n// is either not a list, or is an empty list\n};\n\ntemplate class L, class T1, class... T> struct mp_front_impl>\n{\n using type = T1;\n};\n\n} // namespace detail\n\ntemplate using mp_front = typename detail::mp_front_impl::type;\n\n// mp_pop_front\nnamespace detail\n{\n\ntemplate struct mp_pop_front_impl\n{\n// An error \"no type named 'type'\" here means that the argument to mp_pop_front\n// is either not a list, or is an empty list\n};\n\ntemplate class L, class T1, class... T> struct mp_pop_front_impl>\n{\n using type = L;\n};\n\n} // namespace detail\n\ntemplate using mp_pop_front = typename detail::mp_pop_front_impl::type;\n\n// mp_first\ntemplate using mp_first = mp_front;\n\n// mp_rest\ntemplate using mp_rest = mp_pop_front;\n\n// mp_remove_if\nnamespace detail\n{\n\ntemplate class P> struct mp_remove_if_impl;\n\ntemplate class L, class... T, template class P> struct mp_remove_if_impl, P>\n{\n template using _f = mp_if, mp_list<>, mp_list>;\n using type = mp_append, _f...>;\n};\n\n} // namespace detail\n\ntemplate class P> using mp_remove_if = typename detail::mp_remove_if_impl::type;\n\n} } }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/mp11.hpp\n//<<<<<<<<\n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tusing void_t = void;\n\n\t\ttemplate\n\t\tstruct function_traits\n\t\t{\n\t\t};\n\n\t\ttemplate\n\t\tstruct function_traits>\n\t\t{\n\t\tprivate:\n\n\t\t\ttypedef function_traits tr;\n\n\t\tpublic:\n\n\t\t\ttypedef typename tr::return_type return_type;\n\t\t\tstatic constexpr int arity = tr::arity - 1;\n\n\t\t\tusing mp_args = typename leaf_detail_mp11::mp_rest;\n\n\t\t\ttemplate \n\t\t\tstruct arg:\n\t\t\t\ttr::template arg\n\t\t\t{\n\t\t\t};\n\t\t};\n\n\t\ttemplate\n\t\tstruct function_traits\n\t\t{\n\t\t\ttypedef R return_type;\n\t\t\tstatic constexpr int arity = sizeof...(A);\n\n\t\t\tusing mp_args = leaf_detail_mp11::mp_list;\n\n\t\t\ttemplate \n\t\t\tstruct arg\n\t\t\t{\n\t\t\t\tstatic_assert(I < arity, \"I out of range\");\n\t\t\t\ttypedef typename std::tuple_element>::type type;\n\t\t\t};\n\t\t};\n\n\t\ttemplate struct function_traits : function_traits { };\n\t\ttemplate struct function_traits : function_traits { };\n\t\ttemplate struct function_traits : function_traits { };\n\t\ttemplate struct function_traits : function_traits { };\n\t\ttemplate struct function_traits : function_traits { };\n\t\ttemplate struct function_traits : function_traits { };\n\t} // namespace leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/function_traits.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/detail/mp11.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/mp11.hpp\"\n#ifndef BOOST_LEAF_91843B04108711E9AA4E56D98C7F4AFC\n#define BOOST_LEAF_91843B04108711E9AA4E56D98C7F4AFC\n\n// Copyright 2015-2017 Peter Dimov.\n// Copyright 2019 Emil Dotchevski.\n//\n// Distributed under the Boost Software License, Version 1.0.\n//\n// See accompanying file LICENSE_1_0.txt or copy at\n// http://www.boost.org/LICENSE_1_0.txt\n\n#include \n#include \n\nnamespace boost { namespace leaf { namespace leaf_detail_mp11 {\n\n// mp_list\ntemplate struct mp_list\n{\n};\n\n// mp_identity\ntemplate struct mp_identity\n{\n using type = T;\n};\n\n// mp_inherit\ntemplate struct mp_inherit: T... {};\n\n// mp_if, mp_if_c\nnamespace detail\n{\n\ntemplate struct mp_if_c_impl\n{\n};\n\ntemplate struct mp_if_c_impl\n{\n using type = T;\n};\n\ntemplate struct mp_if_c_impl\n{\n using type = E;\n};\n\n} // namespace detail\n\ntemplate using mp_if_c = typename detail::mp_if_c_impl::type;\ntemplate using mp_if = typename detail::mp_if_c_impl(C::value), T, E...>::type;\n\n// mp_bool\ntemplate using mp_bool = std::integral_constant;\n\nusing mp_true = mp_bool;\nusing mp_false = mp_bool;\n\n// mp_to_bool\ntemplate using mp_to_bool = mp_bool( T::value )>;\n\n// mp_not\ntemplate using mp_not = mp_bool< !T::value >;\n\n// mp_int\ntemplate using mp_int = std::integral_constant;\n\n// mp_size_t\ntemplate using mp_size_t = std::integral_constant;\n\n// mp_set_contains\nnamespace detail\n{\n\ntemplate struct mp_set_contains_impl;\n\ntemplate class L, class... T, class V> struct mp_set_contains_impl, V>\n{\n using type = mp_to_bool, mp_inherit...> > >;\n};\n\n} // namespace detail\n\ntemplate using mp_set_contains = typename detail::mp_set_contains_impl::type;\n\n// mp_set_push_back\nnamespace detail\n{\n\ntemplate struct mp_set_push_back_impl;\n\ntemplate class L, class... U> struct mp_set_push_back_impl>\n{\n using type = L;\n};\n\ntemplate class L, class... U, class T1, class... T> struct mp_set_push_back_impl, T1, T...>\n{\n using S = mp_if, T1>, L, L>;\n using type = typename mp_set_push_back_impl::type;\n};\n\n} // namespace detail\n\ntemplate using mp_set_push_back = typename detail::mp_set_push_back_impl::type;\n\n// mp_unique\nnamespace detail\n{\n\ntemplate struct mp_unique_impl;\n\ntemplate class L, class... T> struct mp_unique_impl>\n{\n using type = mp_set_push_back, T...>;\n};\n\n} // namespace detail\n\ntemplate using mp_unique = typename detail::mp_unique_impl::type;\n\n// mp_append\n\nnamespace detail\n{\n\ntemplate struct mp_append_impl;\n\ntemplate<> struct mp_append_impl<>\n{\n using type = mp_list<>;\n};\n\ntemplate class L, class... T> struct mp_append_impl>\n{\n using type = L;\n};\n\ntemplate class L1, class... T1, template class L2, class... T2, class... Lr> struct mp_append_impl, L2, Lr...>\n{\n using type = typename mp_append_impl, Lr...>::type;\n};\n\n}\n\ntemplate using mp_append = typename detail::mp_append_impl::type;\n\n// mp_front\nnamespace detail\n{\n\ntemplate struct mp_front_impl\n{\n// An error \"no type named 'type'\" here means that the argument to mp_front\n// is either not a list, or is an empty list\n};\n\ntemplate class L, class T1, class... T> struct mp_front_impl>\n{\n using type = T1;\n};\n\n} // namespace detail\n\ntemplate using mp_front = typename detail::mp_front_impl::type;\n\n// mp_pop_front\nnamespace detail\n{\n\ntemplate struct mp_pop_front_impl\n{\n// An error \"no type named 'type'\" here means that the argument to mp_pop_front\n// is either not a list, or is an empty list\n};\n\ntemplate class L, class T1, class... T> struct mp_pop_front_impl>\n{\n using type = L;\n};\n\n} // namespace detail\n\ntemplate using mp_pop_front = typename detail::mp_pop_front_impl::type;\n\n// mp_first\ntemplate using mp_first = mp_front;\n\n// mp_rest\ntemplate using mp_rest = mp_pop_front;\n\n// mp_remove_if\nnamespace detail\n{\n\ntemplate class P> struct mp_remove_if_impl;\n\ntemplate class L, class... T, template class P> struct mp_remove_if_impl, P>\n{\n template using _f = mp_if, mp_list<>, mp_list>;\n using type = mp_append, _f...>;\n};\n\n} // namespace detail\n\ntemplate class P> using mp_remove_if = typename detail::mp_remove_if_impl::type;\n\n} } }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/mp11.hpp\n//<<<<<<<<\n#include \n\nnamespace boost { namespace leaf {\n\n\ttemplate \n\tstruct failed\n\t{\n\t\tR value;\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct is_error_type_default>: std::false_type\n\t\t{\n\t\t};\n\t}\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate ::value, bool IsErrorCodeOrErrorCondition = std::is_error_code_enum::value | std::is_error_condition_enum::value>\n\t\tstruct match_traits;\n\n\t\ttemplate \n\t\tstruct match_traits\n\t\t{\n\t\t\tusing enumerator = T;\n\t\t\tusing e_type = enumerator;\n\t\t\tusing match_type = enumerator;\n\n\t\t\tstatic match_type const & get( e_type const & e ) noexcept\n\t\t\t{\n\t\t\t\treturn e;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct match_traits\n\t\t{\n\t\t\tusing enumerator = decltype(T::value);\n\t\t\tusing e_type = T;\n\t\t\tusing match_type = enumerator;\n\n\t\t\tstatic match_type const & get( e_type const & e ) noexcept\n\t\t\t{\n\t\t\t\treturn e.value;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct match_traits\n\t\t{\n\t\t\tusing enumerator = T;\n\t\t\tusing e_type = std::error_code;\n\t\t\tusing match_type = e_type;\n\n\t\t\tstatic match_type const & get( e_type const & e ) noexcept\n\t\t\t{\n\t\t\t\treturn e;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tbool check_value_pack( MatchType const & x, Enumerator v ) noexcept\n\t\t{\n\t\t\treturn x==v;\n\t\t}\n\n\t\ttemplate \n\t\tbool check_value_pack( MatchType const & x, Enumerator v1, EnumeratorRest ... v_rest ) noexcept\n\t\t{\n\t\t\treturn x==v1 || check_value_pack(x,v_rest...);\n\t\t}\n\n\t\ttemplate \n\t\tbool check_exception_pack( std::exception const * ex, Ex const * ) noexcept\n\t\t{\n\t\t\treturn dynamic_cast(ex)!=0;\n\t\t}\n\n\t\ttemplate \n\t\tbool check_exception_pack( std::exception const * ex, Ex const *, ExRest const * ... ex_rest ) noexcept\n\t\t{\n\t\t\treturn dynamic_cast(ex)!=0 || check_exception_pack(ex, ex_rest...);\n\t\t}\n\t}\n\n\ttemplate ::enumerator... V>\n\tstruct match\n\t{\n\t\tusing e_type = typename leaf_detail::match_traits::e_type;\n\t\tusing match_type = typename leaf_detail::match_traits::match_type;\n\t\tmatch_type const & value;\n\n\t\texplicit match( e_type const & e ):\n\t\t\tvalue(leaf_detail::match_traits::get(e))\n\t\t{\n\t\t}\n\n\t\tbool operator()() const noexcept\n\t\t{\n\t\t\treturn leaf_detail::check_value_pack(value,V...);\n\t\t}\n\t};\n\n\ttemplate \n\tstruct catch_\n\t{\n\t\tstd::exception const & value;\n\n\t\texplicit catch_( std::exception const & ex ):\n\t\t\tvalue(ex)\n\t\t{\n\t\t}\n\n\t\tbool operator()() const noexcept\n\t\t{\n\t\t\treturn leaf_detail::check_exception_pack(&value,static_cast(0)...);\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\tnamespace static_store_internal\n\t\t{\n\t\t\ttemplate (a)...);\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & put( T const & v )\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(v);\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & put( T && v ) noexcept\n\t\t\t{\n\t\t\t\treset();\n\t\t\t\t(void) new(&value_) T(std::move(v));\n\t\t\t\thas_value_=true;\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT const * has_value() const noexcept\n\t\t\t{\n\t\t\t\treturn has_value_ ? &value_ : 0;\n\t\t\t}\n\n\t\t\tT * has_value() noexcept\n\t\t\t{\n\t\t\t\treturn has_value_ ? &value_ : 0;\n\t\t\t}\n\n\t\t\tT const & value() const & noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT & value() & noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT const && value() const && noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\treturn value_;\n\t\t\t}\n\n\t\t\tT value() && noexcept\n\t\t\t{\n\t\t\t\tassert(has_value()!=0);\n\t\t\t\tT tmp(std::move(value_));\n\t\t\t\treset();\n\t\t\t\treturn tmp;\n\t\t\t}\n\t\t};\n\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/optional.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/detail/print.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/print.hpp\"\n#ifndef BOOST_LEAF_3BAB50A2B87E11E89EEB30600C39171A\n#define BOOST_LEAF_3BAB50A2B87E11E89EEB30600C39171A\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tinline char const * check_prefix( char const * t, char const (&prefix)[N] )\n\t\t{\n\t\t\treturn std::strncmp(t,prefix,sizeof(prefix)-1)==0 ? t+sizeof(prefix)-1 : t;\n\t\t}\n\t}\n\n\ttemplate \n\tchar const * type() noexcept\n\t{\n\tchar const * t =\n#ifdef __FUNCSIG__\n\t\t__FUNCSIG__;\n#else\n\t\t__PRETTY_FUNCTION__;\n#endif\n#if defined(__clang__)\n\t\tassert(leaf_detail::check_prefix(t,\"const char *boost::leaf::type() \")==t+32);\n\t\treturn t+32;\n#elif defined(__GNUC__)\n\t\tassert(leaf_detail::check_prefix(t,\"const char* boost::leaf::type() \")==t+32);\n\t\treturn t+32;\n#else\n\t\tchar const * clang_style = leaf_detail::check_prefix(t,\"const char *boost::leaf::type() \");\n\t\tif( clang_style!=t )\n\t\t\treturn clang_style;\n\t\tchar const * gcc_style = leaf_detail::check_prefix(t,\"const char* boost::leaf::type() \");\n\t\tif( gcc_style!=t )\n\t\t\treturn gcc_style;\n#endif\n\t\treturn t;\n\t}\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct is_printable: std::false_type\n\t\t{\n\t\t};\n\n\t\ttemplate \n\t\tstruct is_printable()<(), void())>: std::true_type\n\t\t{\n\t\t};\n\n\t\t////////////////////////////////////////\n\n\t\ttemplate \n\t\tstruct has_printable_member_value: std::false_type\n\t\t{\n\t\t};\n\n\t\ttemplate \n\t\tstruct has_printable_member_value()<().value, void())>: std::true_type\n\t\t{\n\t\t};\n\n\t\t////////////////////////////////////////\n\n\t\ttemplate ::value, bool ValuePrintable=has_printable_member_value::value>\n\t\tstruct diagnostic;\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & x )\n\t\t\t{\n\t\t\t\tos << x;\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & x )\n\t\t\t{\n\t\t\t\tos << type() << \": \" << x.value;\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, Wrapper const & )\n\t\t\t{\n\t\t\t\tos << type() << \": N/A\";\n\t\t\t\treturn true;\n\t\t\t}\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, std::exception_ptr const & )\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/print.hpp\n//<<<<<<<<\n#include \n#include \n#include \n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\tclass id_factory\n\t\t{\n\t\t\tid_factory( id_factory const & ) = delete;\n\t\t\tid_factory & operator=( id_factory const & ) = delete;\n\n\t\t\tstatic int new_err_id() noexcept\n\t\t\t{\n\t\t\t\tstatic std::atomic c;\n\t\t\t\tif( unsigned id = ++c )\n\t\t\t\t\treturn int(id);\n\t\t\t\telse\n\t\t\t\t\treturn int(++c);\n\t\t\t}\n\n\t\t\tint next_id_;\n\t\t\tint last_id_;\n\n\t\t\tid_factory() noexcept:\n\t\t\t\tnext_id_(new_err_id()),\n\t\t\t\tlast_id_(next_id_-1)\n\t\t\t{\n\t\t\t}\n\n\t\tpublic:\n\n\t\t\tstatic id_factory & tl_instance() noexcept\n\t\t\t{\n\t\t\t\tstatic thread_local id_factory s;\n\t\t\t\treturn s;\n\t\t\t}\n\n\t\t\tint last_id() noexcept\n\t\t\t{\n\t\t\t\treturn last_id_;\n\t\t\t}\n\n\t\t\tint new_id() noexcept\n\t\t\t{\n\t\t\t\tint id = last_id_ = next_id_;\n\t\t\t\tnext_id_ = new_err_id();\n\t\t\t\treturn id;\n\t\t\t}\n\n\t\t\tint next_id() noexcept\n\t\t\t{\n\t\t\t\treturn next_id_;\n\t\t\t}\n\t\t};\n\n\t\tinline int last_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().last_id();\n\t\t}\n\n\t\tinline int new_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().new_id();\n\t\t}\n\n\t\tinline int next_id() noexcept\n\t\t{\n\t\t\treturn id_factory::tl_instance().next_id();\n\t\t}\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\tclass slot_base\n\t\t{\n\t\t\tslot_base( slot_base const & ) = delete;\n\t\t\tslot_base & operator=( slot_base const & ) = delete;\n\n\t\t\tvirtual bool slot_print( std::ostream &, int err_id ) const = 0;\n\n\t\tpublic:\n\n\t\t\tstatic void print( std::ostream & os, int err_id )\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t\tfor( slot_base const * p = first(); p; p=p->next_ )\n\t\t\t\t\tif( p->slot_print(os,err_id) )\n\t\t\t\t\t\tos << std::endl;\n\t\t\t}\n\n\t\tprotected:\n\n\t\t\tstatic slot_base const * & first() noexcept\n\t\t\t{\n\t\t\t\tstatic thread_local slot_base const * p = 0;\n\t\t\t\treturn p;\n\t\t\t}\n\n\t\t\tslot_base const * const next_;\n\n\t\t\tslot_base() noexcept:\n\t\t\t\tnext_(first())\n\t\t\t{\n\t\t\t\tfirst() = this;\n\t\t\t}\n\n\t\t\t~slot_base() noexcept\n\t\t\t{\n\t\t\t\tslot_base const * & p = first();\n\t\t\t\tassert(p==this);\n\t\t\t\tp = next_;\n\t\t\t}\n\t\t};\n\t}\n\n\t////////////////////////////////////////\n\n\tclass error_id;\n\tnamespace leaf_detail { class captured_exception; }\n\n\tclass error_info\n\t{\n\t\terror_info( error_info const & ) = delete;\n\t\terror_info & operator=( error_info const & ) = delete;\n\n\t\tint const err_id_;\n\t\tstd::exception const * const ex_;\n\t\tleaf_detail::captured_exception const * const cap_;\n\t\tvoid (* const print_ex_)( std::ostream &, std::exception const *, leaf_detail::captured_exception const * );\n\n\tpublic:\n\n\t\texplicit error_info( int err_id ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(0),\n\t\t\tcap_(0),\n\t\t\tprint_ex_(0)\n\t\t{\n\t\t}\n\n\t\terror_info( int err_id, std::exception const * ex, void (*print_ex)(std::ostream &, std::exception const *, leaf_detail::captured_exception const *) ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(ex),\n\t\t\tcap_(0),\n\t\t\tprint_ex_(print_ex)\n\t\t{\n\t\t\tassert(print_ex_!=0);\n\t\t}\n\n\t\terror_info( int err_id, std::exception const * ex, leaf_detail::captured_exception const * cap, void (*print_ex)(std::ostream &, std::exception const *, leaf_detail::captured_exception const *) ) noexcept:\n\t\t\terr_id_(err_id),\n\t\t\tex_(ex),\n\t\t\tcap_(cap),\n\t\t\tprint_ex_(print_ex)\n\t\t{\n\t\t\tassert(print_ex_!=0);\n\t\t}\n\n\t\tint err_id() const noexcept\n\t\t{\n\t\t\treturn err_id_;\n\t\t}\n\n\t\tbool has_error() const noexcept\n\t\t{\n\t\t\treturn err_id_!=0;\n\t\t}\n\n\t\terror_id error() const noexcept;\n\n\t\tbool has_exception() const noexcept\n\t\t{\n\t\t\treturn print_ex_!=0;\n\t\t}\n\n\t\tstd::exception const * exception() const noexcept\n\t\t{\n\t\t\tassert(has_exception());\n\t\t\treturn ex_;\n\t\t}\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, error_info const & x )\n\t\t{\n\t\t\tos << \"LEAF Error ID: \" << x.err_id_ << std::endl;\n\t\t\tif( x.print_ex_ )\n\t\t\t\tx.print_ex_(os,x.ex_,x.cap_);\n\t\t\tleaf_detail::slot_base::print(os,x.err_id_);\n\t\t\treturn os;\n\t\t}\n\t};\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct has_data_member_value\n\t\t{\n\t\t\tstatic constexpr bool value=false;\n\t\t};\n\n\t\ttemplate \n\t\tstruct has_data_member_value().value, void())>\n\t\t{\n\t\t\tstatic constexpr bool value=std::is_member_object_pointer::value;\n\t\t};\n\n\t\ttemplate \n\t\tstruct is_error_type_default\n\t\t{\n\t\t\tstatic constexpr bool value = has_data_member_value::value || std::is_base_of::value;\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\t}\n\n\ttemplate \n\tstruct is_error_type: leaf_detail::is_error_type_default\n\t{\n\t};\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\tclass monitor_base\n\t\t{\n\t\t\tmonitor_base( monitor_base const & ) = delete;\n\t\t\tmonitor_base & operator=( monitor_base const & ) = delete;\n\n\t\t\tmutable error_info const * ei_;\n\n\t\tprotected:\n\n\t\t\tmonitor_base() noexcept:\n\t\t\t\tei_(0)\n\t\t\t{\n\t\t\t}\n\n\t\t\tmonitor_base( monitor_base && x ) noexcept:\n\t\t\t\tei_(0)\n\t\t\t{\n\t\t\t\tx.ei_ = 0;\n\t\t\t}\n\n\t\t\tvoid set_error_info( error_info const & ei ) const noexcept\n\t\t\t{\n\t\t\t\tei_ = &ei;\n\t\t\t}\n\n\t\t\terror_info const & get_error_info() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn *ei_;\n\t\t\t}\n\n\t\tpublic:\n\n\t\t\tbool has_error() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->has_error();\n\t\t\t}\n\n\t\t\terror_id error() const noexcept;\n\n\t\t\tbool has_exception() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->has_exception();\n\t\t\t}\n\n\t\t\tstd::exception const * exception() const noexcept\n\t\t\t{\n\t\t\t\tassert(ei_!=0);\n\t\t\t\treturn ei_->exception();\n\t\t\t}\n\t\t};\n\t}\n\n\tclass diagnostic_info: leaf_detail::monitor_base\n\t{\n\tpublic:\n\n\t\tchar const * (*first_type)();\n\t\tint count;\n\n\t\texplicit diagnostic_info( char const * (*first_type)() ) noexcept:\n\t\t\tfirst_type(first_type),\n\t\t\tcount(1)\n\t\t{\n\t\t}\n\n\t\tusing monitor_base::set_error_info;\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, diagnostic_info const & x )\n\t\t{\n\t\t\tassert(x.first_type!=0);\n\t\t\tassert(x.count>0);\n\t\t\tos << x.get_error_info() << \"diagnostic_info: Detected \";\n\t\t\tif( x.count==1 )\n\t\t\t\tos << \"1 attempt to communicate an E-object\";\n\t\t\telse\n\t\t\t\tos << x.count << \" attempts to communicate unexpected E-objects, the first one\";\n\t\t\treturn os << \" of type \" << x.first_type() << std::endl;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, diagnostic_info const & ) noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t}\n\n\tclass verbose_diagnostic_info: leaf_detail::monitor_base\n\t{\n\t\tstd::string s_;\n\t\tstd::set already_;\n\n\tpublic:\n\n\t\tverbose_diagnostic_info() noexcept\n\t\t{\n\t\t}\n\n\t\tusing monitor_base::set_error_info;\n\n\t\tvoid reset() noexcept\n\t\t{\n\t\t\ts_.clear();\n\t\t\talready_.clear();\n\t\t}\n\n\t\ttemplate \n\t\tvoid add( E const & e )\n\t\t{\n\t\t\tstd::stringstream s;\n\t\t\tif( leaf_detail::diagnostic::print(s,e) && already_.insert(&type).second )\n\t\t\t{\n\t\t\t\ts << std::endl;\n\t\t\t\ts_ += s.str();\n\t\t\t}\n\t\t}\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, verbose_diagnostic_info const & x )\n\t\t{\n\t\t\tos <<\n\t\t\t\tx.get_error_info() <<\n\t\t\t\t\"verbose_diagnostic_info:\" << std::endl <<\n\t\t\t\tx.s_;\n\t\t\treturn os;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\ttemplate <>\n\t\tstruct diagnostic\n\t\t{\n\t\t\tstatic bool print( std::ostream & os, verbose_diagnostic_info const & ) noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\t\t};\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tstruct id_e_pair\n\t\t{\n\t\t\tint err_id;\n\t\t\tE e;\n\n\t\t\texplicit id_e_pair( int err_id ) noexcept:\n\t\t\t\terr_id(err_id)\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\n\t\t\tid_e_pair( int err_id, E const & e ):\n\t\t\t\terr_id(err_id),\n\t\t\t\te(e)\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\n\t\t\tid_e_pair( int err_id, E && e ) noexcept:\n\t\t\t\terr_id(err_id),\n\t\t\t\te(std::forward(e))\n\t\t\t{\n\t\t\t\tassert(err_id);\n\t\t\t}\n\t\t};\n\n\t\tinline int & tl_unexpected_enabled_counter() noexcept\n\t\t{\n\t\t\tstatic thread_local int c;\n\t\t\treturn c;\n\t\t}\n\t}\n\n\t////////////////////////////////////////\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate \n\t\tclass slot:\n\t\t\tslot_base,\n\t\t\toptional>\n\t\t{\n\t\t\tslot( slot const & ) = delete;\n\t\t\tslot & operator=( slot const & ) = delete;\n\t\t\ttypedef optional> base;\n\t\t\tslot * prev_;\n\t\t\tstatic_assert(is_error_type::value,\"Not an error type\");\n\n\t\t\tbool slot_print( std::ostream &, int err_id ) const;\n\n\t\tprotected:\n\n\t\t\tslot() noexcept;\n\t\t\t~slot() noexcept;\n\n\t\tpublic:\n\n\t\t\tusing base::put;\n\t\t\tusing base::has_value;\n\t\t\tusing base::value;\n\t\t\tusing base::reset;\n\t\t\tusing base::emplace;\n\t\t};\n\n\t\ttemplate \n\t\tslot * & tl_slot_ptr() noexcept\n\t\t{\n\t\t\tstatic thread_local slot * s;\n\t\t\treturn s;\n\t\t}\n\n\t\ttemplate \n\t\tvoid put_unexpected( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tif( slot * p = tl_slot_ptr() )\n\t\t\t{\n\t\t\t\tif( p->has_value() )\n\t\t\t\t{\n\t\t\t\t\tauto & p_id_e = p->value();\n\t\t\t\t\tif( p_id_e.err_id==id_e.err_id )\n\t\t\t\t\t{\n\t\t\t\t\t\t++p_id_e.e.count;\n\t\t\t\t\t\treturn;\n\t\t\t\t\t}\n\t\t\t\t}\n\t\t\t\t(void) p->put( id_e_pair(id_e.err_id,diagnostic_info(&type)) );\n\t\t\t}\n\t\t}\n\n\t\ttemplate \n\t\tvoid put_verbose_diagnostic_info( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tif( slot * sl = tl_slot_ptr() )\n\t\t\t{\n\t\t\t\tif( auto * pv = sl->has_value() )\n\t\t\t\t{\n\t\t\t\t\tif( pv->err_id!=id_e.err_id )\n\t\t\t\t\t{\n\t\t\t\t\t\tpv->err_id = id_e.err_id;\n\t\t\t\t\t\tpv->e.reset();\n\t\t\t\t\t}\n\t\t\t\t\tpv->e.add(id_e.e);\n\t\t\t\t}\n\t\t\t\telse\n\t\t\t\t\tsl->emplace(id_e.err_id).e.add(id_e.e);\n\t\t\t}\n\t\t}\n\n\t\ttemplate \n\t\tvoid no_expect_slot( id_e_pair const & id_e ) noexcept\n\t\t{\n\t\t\tput_unexpected(id_e);\n\t\t\tput_verbose_diagnostic_info(id_e);\n\t\t}\n\n\t\ttemplate \n\t\tint put_slot( int err_id, E && e ) noexcept\n\t\t{\n\t\t\tusing T = typename std::remove_cv::type>::type;\n\t\t\tassert(err_id);\n\t\t\tif( slot * p = tl_slot_ptr() )\n\t\t\t\t(void) p->put( id_e_pair(err_id,std::forward(e)) );\n\t\t\telse\n\t\t\t{\n\t\t\t\tint c = tl_unexpected_enabled_counter();\n\t\t\t\tassert(c>=0);\n\t\t\t\tif( c )\n\t\t\t\t\tno_expect_slot( id_e_pair(err_id,std::forward(e)) );\n\t\t\t}\n\t\t\treturn 0;\n\t\t}\n\n\t\ttemplate \n\t\tslot::slot() noexcept\n\t\t{\n\t\t\tslot * & p = tl_slot_ptr();\n\t\t\tprev_ = p;\n\t\t\tp = this;\n\t\t}\n\n\t\ttemplate \n\t\tslot::~slot() noexcept\n\t\t{\n\t\t\tif( prev_ )\n\t\t\t{\n\t\t\t\toptional> & p = *prev_;\n\t\t\t\tp = std::move(*this);\n\t\t\t}\n\t\t\telse\n\t\t\t{\n\t\t\t\tint c = tl_unexpected_enabled_counter();\n\t\t\t\tassert(c>=0);\n\t\t\t\tif( c && has_value() )\n\t\t\t\t\tno_expect_slot(value());\n\t\t\t}\n\t\t\ttl_slot_ptr() = prev_;\n\t\t}\n\n\t\ttemplate \n\t\tbool slot::slot_print( std::ostream & os, int err_id ) const\n\t\t{\n\t\t\tassert(err_id);\n\t\t\tif( tl_slot_ptr()==this )\n\t\t\t\tif( id_e_pair const * id_e = has_value() )\n\t\t\t\t\tif( id_e->err_id==err_id )\n\t\t\t\t\t\treturn diagnostice)>::print(os,id_e->e);\n\t\t\treturn false;\n\t\t}\n\n\t\tenum class result_variant\n\t\t{\n\t\t\tvalue,\n\t\t\terr_id,\n\t\t\tcap\n\t\t};\n\t} // leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/teleport.hpp\n//<<<<<<<<\n#include \n\n#define LEAF_ERROR(...) ::boost::leaf::leaf_detail::new_error_at(__FILE__,__LINE__,__FUNCTION__,__VA_ARGS__)\n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <>\n\t\tstruct is_error_type_default: std::true_type\n\t\t{\n\t\t};\n\n\t\tclass error_category: public std::error_category\n\t\t{\n\t\t\tbool equivalent( int, std::error_condition const & ) const noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\tbool equivalent( std::error_code const &, int ) const noexcept\n\t\t\t{\n\t\t\t\treturn false;\n\t\t\t}\n\n\t\t\tchar const * name() const noexcept\n\t\t\t{\n\t\t\t\treturn \"LEAF error, use with leaf::handle_some or leaf::handle_all.\";\n\t\t\t}\n\n\t\t\tstd::string message( int condition ) const\n\t\t\t{\n\t\t\t\treturn name();\n\t\t\t}\n\t\t};\n\n\t\tinline error_category const & get_error_category() noexcept\n\t\t{\n\t\t\tstatic error_category cat;\n\t\t\treturn cat;\n\t\t}\n\t}\n\n\tinline bool is_error_id( std::error_code const & ec )\n\t{\n\t\treturn &ec.category() == &leaf_detail::get_error_category();\n\t}\n\n\t////////////////////////////////////////\n\n\tstruct e_original_ec { std::error_code value; };\n\n\tclass error_id: public std::error_code\n\t{\n\t\ttemplate \n\t\tstatic std::error_code import( ErrorCode && ec ) noexcept\n\t\t{\n\t\t\tstd::error_category const & cat = leaf_detail::get_error_category();\n\t\t\tif( ec && &ec.category()!=&cat )\n\t\t\t{\n\t\t\t\tint err_id = leaf_detail::new_id();\n\t\t\t\tleaf_detail::put_slot(err_id, e_original_ec{ec});\n\t\t\t\treturn std::error_code(err_id, cat);\n\t\t\t}\n\t\t\telse\n\t\t\t\treturn ec;\n\t\t}\n\n\tpublic:\n\n\t\terror_id() noexcept = default;\n\n\t\ttemplate \n\t\terror_id( std::error_code const & ec, E && ... e ) noexcept:\n\t\t\terror_code(import(ec))\n\t\t{\n\t\t\t(void) propagate(std::forward(e)...);\n\t\t}\n\n\t\ttemplate \n\t\terror_id( std::error_code && ec, E && ... e ) noexcept:\n\t\t\terror_code(import(std::move(ec)))\n\t\t{\n\t\t\t(void) propagate(std::forward(e)...);\n\t\t}\n\n\t\terror_id propagate() const noexcept\n\t\t{\n\t\t\tassert(is_error_id(*this));\n\t\t\treturn *this;\n\t\t}\n\n\t\ttemplate \n\t\terror_id propagate( E && ... e ) const noexcept\n\t\t{\n\t\t\tassert(is_error_id(*this));\n\t\t\tauto _ = { leaf_detail::put_slot(value(), std::forward(e))... };\n\t\t\t(void) _;\n\t\t\treturn *this;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\tinline error_id make_error( int err_id )\n\t\t{\n\t\t\tassert(err_id);\n\t\t\treturn error_id(std::error_code(err_id, get_error_category()));\n\t\t}\n\t}\n\n\ttemplate \n\terror_id new_error( E && ... e ) noexcept\n\t{\n\t\treturn leaf_detail::make_error(leaf_detail::new_id()).propagate(std::forward(e)...);\n\t}\n\n\tinline error_id next_error() noexcept\n\t{\n\t\treturn leaf_detail::make_error(leaf_detail::next_id());\n\t}\n\n\tinline error_id error_info::error() const noexcept\n\t{\n\t\tassert(has_error());\n\t\treturn leaf_detail::make_error(err_id_);\n\t}\n\n\tinline error_id leaf_detail::monitor_base::error() const noexcept\n\t{\n\t\tassert(ei_!=0);\n\t\treturn ei_->error();\n\t}\n\n\t////////////////////////////////////////\n\n\tstruct e_source_location\n\t{\n\t\tchar const * const file;\n\t\tint const line;\n\t\tchar const * const function;\n\n\t\tfriend std::ostream & operator<<( std::ostream & os, e_source_location const & x )\n\t\t{\n\t\t\treturn os << leaf::type() << \": \" << x.file << '(' << x.line << \") in function \" << x.function;\n\t\t}\n\t};\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate <> struct is_error_type_default: std::true_type { };\n\n\t\ttemplate \n\t\terror_id new_error_at( char const * file, int line, char const * function, E && ... e ) noexcept\n\t\t{\n\t\t\tassert(file&&*file);\n\t\t\tassert(line>0);\n\t\t\tassert(function&&*function);\n\t\t\te_source_location sl { file, line, function }; // Temp object MSVC workaround\n\t\t\treturn new_error( std::move(sl), std::forward(e)... );\n\t\t}\n\t}\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/error.hpp\n//<<<<<<<<\n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail {\n\t\tinline int handle_get_err_id( error_id const & err ) noexcept\n\t\t{\n\t\t\treturn err.value();\n\t\t}\n\t\tinline int handle_get_err_id( std::error_code const & ec ) noexcept\n\t\t{\n\t\t\treturn is_error_id(ec) ? ec.value() : 0;\n\t\t}\n\t}\n\n\ttemplate \n\ttypename std::remove_reference()().value())>::type handle_all( TryBlock && try_block, Handler && ... handler )\n\t{\n\t\tusing namespace leaf_detail;\n\t\ttypename deduce_static_store::type>::type ss;\n\t\tss.set_reset(true);\n\t\tif( auto r = std::forward(try_block)() )\n\t\t\treturn r.value();\n\t\telse\n\t\t\treturn ss.handle_error(error_info(handle_get_err_id(r.error())), &r, std::forward(handler)...);\n\t}\n\n\tnamespace leaf_detail\n\t{\n\t\ttemplate ::return_type, class=typename function_traits::mp_args>\n\t\tstruct handler_wrapper;\n\n\t\ttemplate class L, class... A>\n\t\tstruct handler_wrapper>\n\t\t{\n\t\t\tF f_;\n\t\t\texplicit handler_wrapper( F && f ) noexcept:\n\t\t\t\tf_(std::forward(f))\n\t\t\t{\n\t\t\t}\n\t\t\tTryReturn operator()( A... a ) const\n\t\t\t{\n\t\t\t\treturn f_(std::forward (a)...);\n\t\t\t}\n\t\t};\n\n\t\ttemplate class L, class... A>\n\t\tstruct handler_wrapper>\n\t\t{\n\t\t\tF f_;\n\t\t\texplicit handler_wrapper( F && f ) noexcept:\n\t\t\t\tf_(std::forward(f))\n\t\t\t{\n\t\t\t}\n\t\t\tTryReturn operator()( A... a ) const\n\t\t\t{\n\t\t\t\tf_(std::forward (a)...);\n\t\t\t\treturn { };\n\t\t\t}\n\t\t};\n\t}\n\n\ttemplate \n\tdecltype(std::declval()()) handle_some( TryBlock && try_block, Handler && ... handler )\n\t{\n\t\tusing namespace leaf_detail;\n\t\tusing R = decltype(std::declval()());\n\t\ttypename deduce_static_store::type>::type ss;\n\t\tif( auto r = std::forward(try_block)() )\n\t\t{\n\t\t\tss.set_reset(true);\n\t\t\treturn r;\n\t\t}\n\t\telse\n\t\t{\n\t\t\tauto rr = ss.handle_error(error_info(handle_get_err_id(r.error())), &r, handler_wrapper(std::forward(handler))..., [&r] { return r; } );\n\t\t\tif( rr )\n\t\t\t\tss.set_reset(true);\n\t\t\treturn rr;\n\t\t}\n\t}\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/handle.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/detail/result_traits.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/result_traits.hpp\"\n#ifndef BOOST_LEAF_CE432B981E8F11E9A65FAF8887D1CC0E\n#define BOOST_LEAF_CE432B981E8F11E9A65FAF8887D1CC0E\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\tstruct void_type;\n\n\t\ttemplate \n\t\tusing rt_void_t = void_type;\n\n\t\ttemplate \n\t\tstruct result_traits\n\t\t{\n\t\t\tusing value_type = V;\n\t\t\tusing error_type = E;\n\t\t};\n\n\t\ttemplate \n\t\tstruct result_traits().value())>, rt_void_t().error())>>\n\t\t{\n\t\t\tusing value_type = decltype(std::declval().value());\n\t\t\tusing error_type = decltype(std::declval().error());\n\t\t};\n\n\t\ttemplate \n\t\tstruct is_result_type\n\t\t{\n\t\t\tusing T = typename result_traits::value_type;\n\t\t\tusing E = typename result_traits::error_type;\n\t\t\tconstexpr static bool value =\n\t\t\t\t!std::is_same::value &&\n\t\t\t\t!std::is_same::value &&\n\t\t\t\t!std::is_same::value;\n\t\t};\n\t} // namespace leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/result_traits.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/detail/print_exception_info.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/print_exception_info.hpp\"\n#ifndef BOOST_LEAF_E823AAD6151311E9A430DDBB67511AEB\n#define BOOST_LEAF_E823AAD6151311E9A430DDBB67511AEB\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n\n//>>>>>>>>\n//boost/leaf/detail/captured_exception.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/captured_exception.hpp\"\n#ifndef BOOST_LEAF_E32F3CCC139011E995085E318C7F4AFC\n#define BOOST_LEAF_E32F3CCC139011E995085E318C7F4AFC\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n#include \n#include \n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\tclass captured_exception:\n\t\t\tpublic std::exception\n\t\t{\n\t\tprotected:\n\n\t\t\tcaptured_exception() noexcept\n\t\t\t{\n\t\t\t}\n\n\t\t\t~captured_exception() noexcept\n\t\t\t{\n\t\t\t}\n\n\t\tpublic:\n\n\t\t\t[[noreturn]] virtual void unload_and_rethrow_original_exception() = 0;\n\t\t\tvirtual void print( std::ostream & ) const = 0;\n\t\t};\n\t}\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/captured_exception.hpp\n//<<<<<<<<\n\n//>>>>>>>>\n//boost/leaf/detail/demangle.hpp\n//>>>>>>>>\n#line 1 \"boost/leaf/detail/demangle.hpp\"\n#ifndef BOOST_LEAF_E7999136FCD911E8B7F308A7642D5A5F\n#define BOOST_LEAF_E7999136FCD911E8B7F308A7642D5A5F\n\n// Copyright (c) 2018 Emil Dotchevski\n// Copyright (c) 2018 Second Spectrum, Inc.\n\n// Distributed under the Boost Software License, Version 1.0. (See accompanying\n// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)\n\n// core::demangle\n//\n// Copyright 2014 Peter Dimov\n// Copyright 2014 Andrey Semashev\n//\n// Distributed under the Boost Software License, Version 1.0.\n// See accompanying file LICENSE_1_0.txt or copy at\n// http://www.boost.org/LICENSE_1_0.txt\n\n#include \n\n#if !defined(_MSC_VER)\n#\tif defined(__has_include) && __has_include()\n#\t\tdefine BOOST_LEAF_HAS_CXXABI_H\n#\tendif\n#endif\n\n#if defined( BOOST_LEAF_HAS_CXXABI_H )\n#\tinclude \n// For some archtectures (mips, mips64, x86, x86_64) cxxabi.h in Android NDK is implemented by gabi++ library\n// (https://android.googlesource.com/platform/ndk/+/master/sources/cxx-stl/gabi++/), which does not implement\n// abi::__cxa_demangle(). We detect this implementation by checking the include guard here.\n#\tif defined( __GABIXX_CXXABI_H__ )\n#\t\tundef BOOST_LEAF_HAS_CXXABI_H\n#\telse\n#\t\tinclude \n#\t\tinclude \n#\tendif\n#endif\n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\tinline char const * demangle_alloc( char const * name ) noexcept;\n\t\tinline void demangle_free( char const * name ) noexcept;\n\n\t\tclass scoped_demangled_name\n\t\t{\n\t\tprivate:\n\t\t\tchar const * m_p;\n\n\t\tpublic:\n\t\t\texplicit scoped_demangled_name( char const * name ) noexcept :\n\t\t\t\tm_p( demangle_alloc( name ) )\n\t\t\t{\n\t\t\t}\n\n\t\t\t~scoped_demangled_name() noexcept\n\t\t\t{\n\t\t\t\tdemangle_free( m_p );\n\t\t\t}\n\n\t\t\tchar const * get() const noexcept\n\t\t\t{\n\t\t\t\treturn m_p;\n\t\t\t}\n\n\t\t\tscoped_demangled_name( scoped_demangled_name const& ) = delete;\n\t\t\tscoped_demangled_name& operator= ( scoped_demangled_name const& ) = delete;\n\t\t};\n\n#if defined( BOOST_LEAF_HAS_CXXABI_H )\n\n\t\tinline char const * demangle_alloc( char const * name ) noexcept\n\t\t{\n\t\t\tint status = 0;\n\t\t\tstd::size_t size = 0;\n\t\t\treturn abi::__cxa_demangle( name, NULL, &size, &status );\n\t\t}\n\n\t\tinline void demangle_free( char const * name ) noexcept\n\t\t{\n\t\t\tstd::free( const_cast< char* >( name ) );\n\t\t}\n\n\t\tinline std::string demangle( char const * name )\n\t\t{\n\t\t\tscoped_demangled_name demangled_name( name );\n\t\t\tchar const * p = demangled_name.get();\n\t\t\tif( !p )\n\t\t\t\tp = name;\n\t\t\treturn p;\n\t\t}\n\n#else\n\n\t\tinline char const * demangle_alloc( char const * name ) noexcept\n\t\t{\n\t\t\treturn name;\n\t\t}\n\n\t\tinline void demangle_free( char const * ) noexcept\n\t\t{\n\t\t}\n\n\t\tinline std::string demangle( char const * name )\n\t\t{\n\t\t\treturn name;\n\t\t}\n\n#endif\n\t}\n\n} }\n\n#ifdef BOOST_LEAF_HAS_CXXABI_H\n#\tundef BOOST_LEAF_HAS_CXXABI_H\n#endif\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/demangle.hpp\n//<<<<<<<<\n\nnamespace boost { namespace leaf {\n\n\tnamespace leaf_detail\n\t{\n\t\tinline void print_exception_info( std::ostream & os, std::exception const * ex, captured_exception const * cap )\n\t\t{\n\t\t\tif( cap )\n\t\t\t{\n\t\t\t\tos << \"Detected exception_capture of the following error types:\" << std::endl;\n\t\t\t\tcap->print(os);\n\t\t\t\tos << \"Diagnostic Information about the original exception follows\" << std::endl;\n\t\t\t}\n\t\t\tif( ex )\n\t\t\t{\n\t\t\t\tassert(!dynamic_cast(ex));\n\t\t\t\tos <<\n\t\t\t\t\t\"Exception dynamic type: \" << leaf_detail::demangle(typeid(*ex).name()) << std::endl <<\n\t\t\t\t\t\"std::exception::what(): \" << ex->what() << std::endl;\n\t\t\t}\n\t\t\telse\n\t\t\t\tos << \"Unknown exception type (not a std::exception)\" << std::endl;\n\t\t}\n\t} // namespace leaf_detail\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/detail/print_exception_info.hpp\n//<<<<<<<<\n\nnamespace boost { namespace leaf {\n\n\tinline error_id get_error( std::exception const & ex ) noexcept\n\t{\n\t\tif( auto err = dynamic_cast(&ex) )\n\t\t\treturn *err;\n\t\telse\n\t\t\treturn next_error();\n\t}\n\n\tnamespace leaf_detail\n\t{\n\t\tinline int get_err_id( std::exception const & ex ) noexcept\n\t\t{\n\t\t\tif( auto err = dynamic_cast(&ex) )\n\t\t\t\treturn err->value();\n\t\t\telse if( auto err = dynamic_cast(&ex) )\n\t\t\t{\n\t\t\t\tstd::error_code const & ec = err->code();\n\t\t\t\tif( is_error_id(ec) )\n\t\t\t\t\treturn ec.value();\n\t\t\t}\n\t\t\treturn next_id();\n\t\t}\n\n\t\ttemplate ()()), bool ReturnsResultType = is_result_type::value>\n\t\tstruct call_try_block;\n\n\t\ttemplate \n\t\tstruct call_try_block\n\t\t{\n\t\t\ttemplate \n\t\t\tstatic R call( StaticStore & ss, TryBlock && try_block, Handler && ... )\n\t\t\t{\n\t\t\t\tss.set_reset(true);\n\t\t\t\treturn std::forward(try_block)();\n\t\t\t}\n\t\t};\n\n\t\ttemplate \n\t\tstruct call_try_block\n\t\t{\n\t\t\ttemplate \n\t\t\tstatic R call( StaticStore & ss, TryBlock && try_block, Handler && ... handler )\n\t\t\t{\n\t\t\t\tif( auto r = std::forward(try_block)() )\n\t\t\t\t{\n\t\t\t\t\tss.set_reset(true);\n\t\t\t\t\treturn r;\n\t\t\t\t}\n\t\t\t\telse\n\t\t\t\t{\n\t\t\t\t\tauto rr = ss.handle_error(error_info(handle_get_err_id(r.error())), &r, handler_wrapper(std::forward(handler))..., [&r] { return r; } );\n\t\t\t\t\tif( rr )\n\t\t\t\t\t\tss.set_reset(true);\n\t\t\t\t\treturn rr;\n\t\t\t\t}\n\t\t\t}\n\t\t};\n\t}\n\n\ttemplate \n\tdecltype(std::declval()()) try_( TryBlock && try_block, Handler && ... handler )\n\t{\n\t\tusing namespace leaf_detail;\n\t\ttypename deduce_static_store::type>::type ss;\n\t\ttry\n\t\t{\n\t\t\treturn leaf_detail::call_try_block::call(ss, std::forward(try_block), std::forward(handler)...);\n\t\t}\n\t\tcatch( captured_exception & cap )\n\t\t{\n\t\t\ttry\n\t\t\t{\n\t\t\t\tcap.unload_and_rethrow_original_exception();\n\t\t\t\tassert(0);\n\t\t\t\tthrow;\n\t\t\t}\n\t\t\tcatch( std::exception const & ex )\n\t\t\t{\n\t\t\t\treturn ss.handle_error(error_info(leaf_detail::get_err_id(ex), &ex, &cap, &print_exception_info), (void *)0, std::forward(handler)..., [ ]() -> typename function_traits::return_type { throw; });\n\t\t\t}\n\t\t\tcatch( ... )\n\t\t\t{\n\t\t\t\treturn ss.handle_error(error_info(leaf_detail::next_id(), 0, &cap, &print_exception_info), (void *)0, std::forward(handler)..., [ ]() -> typename function_traits::return_type { throw; });\n\t\t\t}\n\t\t}\n\t\tcatch( std::exception const & ex )\n\t\t{\n\t\t\treturn ss.handle_error(error_info(leaf_detail::get_err_id(ex), &ex, 0, &print_exception_info), (void *)0, std::forward(handler)..., [ ]() -> typename function_traits::return_type { throw; });\n\t\t}\n\t\tcatch( ... )\n\t\t{\n\t\t\treturn ss.handle_error(error_info(leaf_detail::next_id(), 0, 0, &print_exception_info), (void *)0, std::forward(handler)..., [ ]() -> typename function_traits::return_type { throw; });\n\t\t}\n\t}\n\n} }\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/try.hpp\n//<<<<<<<<\n\n#endif\n\n//<<<<<<<<\n//boost/leaf/all.hpp\n//<<<<<<<<\n","stdin","compiler","clang-7.0.0","boost-1.69.0-clang-7.0.0,gnu++2a,cpp-no-pedantic","createdAt",1548302693,"title","description","isPrivate","compilerInfo",{"_11":3394,"_13":3403,"_15":333,"_17":767,"_19":3404,"_22":23,"_24":25,"_26":890,"_28":3405},"7.0.0",[767],[3406,3408,3410,3412,3458,3463,3468,3482],{"_31":32,"_33":3407},{"_11":35,"_36":23,"_37":38,"_17":39},{"_31":32,"_33":3409},{"_11":42,"_36":25,"_37":43,"_17":44},{"_31":32,"_33":3411},{"_11":47,"_36":25,"_37":48,"_17":49},{"_31":51,"_33":3413},{"_11":3414,"_36":3415,"_55":3416},"boost-clang-7.0.0","boost-1.69.0-clang-7.0.0",[3417,3419,3423,3427,3431,3435,3439,3443,3447,3451,3455],{"_11":3418,"_37":59,"_17":330},"boost-nothing-clang-7.0.0",{"_11":3420,"_37":3421,"_17":3422},"boost-1.61.0-clang-7.0.0","-I/opt/wandbox/boost-1.61.0/clang-7.0.0/include","Boost 1.61.0",{"_11":3424,"_37":3425,"_17":3426},"boost-1.62.0-clang-7.0.0","-I/opt/wandbox/boost-1.62.0/clang-7.0.0/include","Boost 1.62.0",{"_11":3428,"_37":3429,"_17":3430},"boost-1.63.0-clang-7.0.0","-I/opt/wandbox/boost-1.63.0/clang-7.0.0/include","Boost 1.63.0",{"_11":3432,"_37":3433,"_17":3434},"boost-1.64.0-clang-7.0.0","-I/opt/wandbox/boost-1.64.0/clang-7.0.0/include","Boost 1.64.0",{"_11":3436,"_37":3437,"_17":3438},"boost-1.65.0-clang-7.0.0","-I/opt/wandbox/boost-1.65.0/clang-7.0.0/include","Boost 1.65.0",{"_11":3440,"_37":3441,"_17":3442},"boost-1.65.1-clang-7.0.0","-I/opt/wandbox/boost-1.65.1/clang-7.0.0/include","Boost 1.65.1",{"_11":3444,"_37":3445,"_17":3446},"boost-1.66.0-clang-7.0.0","-I/opt/wandbox/boost-1.66.0/clang-7.0.0/include","Boost 1.66.0",{"_11":3448,"_37":3449,"_17":3450},"boost-1.67.0-clang-7.0.0","-I/opt/wandbox/boost-1.67.0/clang-7.0.0/include","Boost 1.67.0",{"_11":3452,"_37":3453,"_17":3454},"boost-1.68.0-clang-7.0.0","-I/opt/wandbox/boost-1.68.0/clang-7.0.0/include","Boost 1.68.0",{"_11":3415,"_37":3456,"_17":3457},"-I/opt/wandbox/boost-1.69.0/clang-7.0.0/include","Boost 1.69.0",{"_31":32,"_33":3459},{"_11":3460,"_36":25,"_37":3461,"_17":3462},"sprout","-I/opt/wandbox/sprout","Sprout",{"_31":32,"_33":3464},{"_11":3465,"_36":25,"_37":3466,"_17":3467},"msgpack","-I/opt/wandbox/msgpack/include","MessagePack",{"_31":51,"_33":3469},{"_11":351,"_36":393,"_55":3470},[3471,3472,3473,3474,3475,3476,3477,3478,3479,3480,3481],{"_11":355,"_37":59,"_17":60},{"_11":357,"_37":358,"_17":359},{"_11":361,"_37":362,"_17":363},{"_11":365,"_37":366,"_17":367},{"_11":369,"_37":370,"_17":371},{"_11":373,"_37":374,"_17":375},{"_11":377,"_37":378,"_17":379},{"_11":381,"_37":382,"_17":383},{"_11":385,"_37":386,"_17":387},{"_11":389,"_37":390,"_17":391},{"_11":393,"_37":394,"_17":395},{"_31":51,"_33":3483},{"_11":86,"_36":87,"_55":3484},[3485,3486,3487],{"_11":87,"_37":59,"_17":90},{"_11":86,"_37":92,"_17":92},{"_11":94,"_37":95,"_17":95},"results",[3490,3494,3497,3500,3503],{"_31":3491,"_3492":3493},"Control","data","Start",{"_31":3495,"_3492":3496},"StdOut","\nf2(0)\nError: unmatched error, what: \n\nf2(1)\n",{"_31":3498,"_3492":3499},"StdErr","terminating with uncaught exception of type std::runtime_error: f2-1\n",{"_31":3501,"_3492":3502},"Signal","Aborted",{"_31":3491,"_3492":3504},"Finish","hpplib",[3507,3522,3533,3542,3551,3560,3569,3578,3588,3597,3608,3619,3630,3641,3650,3661],{"_11":3508,"_3509":3510,"_3399":3511,"_3512":3513,"_3514":3515,"_3520":3521},"CLI11","repository","CLIUtils/CLI11","CLI11 is a command line parser for C++11 and beyond that provides a rich feature set with a simple and intuitive interface.","headerDescription","","wandbox",{"_3516":3517,"_3518":3519},"tagName","v2.5.0","publishedAt","2025-02-27T12:29:12Z","clangd",{"_3516":3517,"_3518":3519},{"_11":3523,"_3509":3524,"_3399":3525,"_3512":3526,"_3514":3527,"_3520":3530},"cxxopts","jarro2783/cxxopts","Lightweight C++ command line option 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C++17.","",{"_3516":3557,"_3518":3558},"v3.4.0","2023-10-13T13:45:17Z",{"_3516":3557,"_3518":3558},{"_11":3561,"_3509":3562,"_3399":3563,"_3512":3564,"_3514":3565,"_3520":3568},"rapidjson","Tencent/rapidjson","A fast JSON parser/generator for C++ with both SAX/DOM style API","",{"_3516":3566,"_3518":3567},"v1.1.0","2016-08-25T08:01:22Z",{"_3516":3566,"_3518":3567},{"_11":3570,"_3509":3571,"_3399":3572,"_3512":3573,"_3514":3574,"_3520":3577},"picojson","kazuho/picojson","a header-file-only, JSON parser serializer in C++","",{"_3516":3575,"_3518":3576},"v1.3.0","2015-02-25T04:12:53Z",{"_3516":3575,"_3518":3576},{"_11":3579,"_3509":3579,"_3399":3580,"_3512":3581,"_3514":3582,"_3520":3585},"nlohmann/json","JSON for Modern C++","",{"_3516":3583,"_3518":3584},"v3.12.0","2025-04-11T08:43:39Z",{"_3516":3586,"_3518":3587},"v3.11.3","2023-11-28T21:38:09Z",{"_11":3589,"_3509":3590,"_3399":3591,"_3512":3592,"_3514":3593,"_3520":3596},"csv-parser","vincentlaucsb/csv-parser","A high-performance, fully-featured CSV parser and serializer for modern C++.","",{"_3516":3594,"_3518":3595},"2.3.0","2024-06-15T20:23:18Z",{"_3516":3594,"_3518":3595},{"_11":3598,"_3509":3599,"_3399":3600,"_3512":3601,"_3514":3602,"_3520":3605},"rapidcsv","d99kris/rapidcsv","C++ CSV parser library","",{"_3516":3603,"_3518":3604},"v8.87","2025-05-17T05:37:53Z",{"_3516":3606,"_3518":3607},"v8.84","2024-09-28T05:31:16Z",{"_11":3609,"_3509":3610,"_3399":3611,"_3512":3612,"_3514":3613,"_3520":3616},"fmt","fmtlib/fmt","A modern formatting library","",{"_3516":3614,"_3518":3615},"11.2.0","2025-05-03T16:40:00Z",{"_3516":3617,"_3518":3618},"11.1.4","2025-02-26T18:33:33Z",{"_11":3620,"_3509":3621,"_3399":3622,"_3512":3623,"_3514":3624,"_3520":3627},"NumCpp","dpilger26/NumCpp","C++ implementation of the Python Numpy library","",{"_3516":3625,"_3518":3626},"Version_2.14.1","2025-05-05T03:42:56Z",{"_3516":3628,"_3518":3629},"Version_2.14.0","2025-02-09T04:16:30Z",{"_11":3631,"_3509":3632,"_3399":3633,"_3512":3634,"_3514":3635,"_3520":3638},"spdlog","gabime/spdlog","Fast C++ logging library.","",{"_3516":3636,"_3518":3637},"v1.15.3","2025-05-09T08:59:29Z",{"_3516":3639,"_3518":3640},"v1.15.1","2025-02-01T12:08:58Z",{"_11":3642,"_3509":3643,"_3399":3644,"_3512":3645,"_3514":3646,"_3520":3649},"expected-lite","martinmoene/expected-lite","expected lite - Expected objects in C++11 and later in a single-file header-only library","",{"_3516":3647,"_3518":3648},"v0.8.0","2024-06-05T21:24:45Z",{"_3516":3647,"_3518":3648},{"_11":3651,"_3509":3652,"_3399":3653,"_3512":3654,"_3514":3655,"_3520":3658},"gsl-lite","gsl-lite/gsl-lite","ISO C++ Core Guidelines Library implementation for C++98, C++11 up","",{"_3516":3656,"_3518":3657},"v1.0.1","2025-05-19T21:18:08Z",{"_3516":3659,"_3518":3660},"v0.42.0","2024-11-01T20:24:11Z",{"_11":3662,"_3509":3663,"_3399":3664,"_3512":3665,"_3514":3666,"_3520":3669},"ut","boost-ext/ut","C++20 μ(micro)/Unit Testing framework","",{"_3516":3667,"_3518":3668},"v2.3.1","2025-04-02T13:02:52Z",{"_3516":3670,"_3518":3671},"v2.3.0","2025-02-04T11:58:39Z","env",{"_3674":3675,"_3676":3677,"_3678":3679,"_3680":3681,"_3682":3683,"_3684":3685,"_3686":3687,"_3688":3689,"_3690":3691},"KV_CACHE",{},"KV_SESSION",{},"R2_BUCKET",{},"WANDBOX_GITHUB_CLIENT_ID","f9d429d939d997e6b08e","WANDBOX_GITHUB_CLIENT_SECRET","d99b3d12225671cde514d9e2b3d5cc8356f4ed5f","WANDBOX_KV_COOKIE_SECRET","FaCnykHoYzqiXReGkgvmcYGvQdQ4yZUE","WANDBOX_R2_PREFIX","master/","WANDBOX_URL_PREFIX","https://api.wandbox.org","ASSETS",{},"root","actionData","errors"]