Codechange: update to fmt 10.0.0 and add formatting support for chrono and std types
This commit is contained in:
Rubidium
Vendored
+4
@@ -1,5 +1,9 @@
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add_files(
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chrono.h
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core.h
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format.h
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format-inl.h
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ostream.h
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ranges.h
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std.h
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)
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Vendored
+1
-1
@@ -1,4 +1,4 @@
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Copyright (c) 2012 - present, Victor Zverovich
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Copyright (c) 2012 - present, Victor Zverovich and {fmt} contributors
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of this software and associated documentation files (the
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Vendored
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Vendored
+2111
-1281
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+209
@@ -0,0 +1,209 @@
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// Formatting library for C++ - std::ostream support
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//
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// Copyright (c) 2012 - present, Victor Zverovich
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// All rights reserved.
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//
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// For the license information refer to format.h.
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#ifndef FMT_OSTREAM_H_
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#define FMT_OSTREAM_H_
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#include <fstream> // std::filebuf
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#if defined(_WIN32) && defined(__GLIBCXX__)
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# include <ext/stdio_filebuf.h>
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# include <ext/stdio_sync_filebuf.h>
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#elif defined(_WIN32) && defined(_LIBCPP_VERSION)
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# include <__std_stream>
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#endif
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#include "format.h"
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FMT_BEGIN_NAMESPACE
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namespace detail {
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// Generate a unique explicit instantion in every translation unit using a tag
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// type in an anonymous namespace.
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namespace {
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struct file_access_tag {};
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} // namespace
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template <typename Tag, typename BufType, FILE* BufType::*FileMemberPtr>
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class file_access {
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friend auto get_file(BufType& obj) -> FILE* { return obj.*FileMemberPtr; }
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};
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#if FMT_MSC_VERSION
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template class file_access<file_access_tag, std::filebuf,
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&std::filebuf::_Myfile>;
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auto get_file(std::filebuf&) -> FILE*;
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#elif defined(_WIN32) && defined(_LIBCPP_VERSION)
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template class file_access<file_access_tag, std::__stdoutbuf<char>,
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&std::__stdoutbuf<char>::__file_>;
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auto get_file(std::__stdoutbuf<char>&) -> FILE*;
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#endif
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inline bool write_ostream_unicode(std::ostream& os, fmt::string_view data) {
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#if FMT_MSC_VERSION
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if (auto* buf = dynamic_cast<std::filebuf*>(os.rdbuf()))
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if (FILE* f = get_file(*buf)) return write_console(f, data);
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#elif defined(_WIN32) && defined(__GLIBCXX__)
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auto* rdbuf = os.rdbuf();
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FILE* c_file;
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if (auto* sfbuf = dynamic_cast<__gnu_cxx::stdio_sync_filebuf<char>*>(rdbuf))
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c_file = sfbuf->file();
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else if (auto* fbuf = dynamic_cast<__gnu_cxx::stdio_filebuf<char>*>(rdbuf))
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c_file = fbuf->file();
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else
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return false;
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if (c_file) return write_console(c_file, data);
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#elif defined(_WIN32) && defined(_LIBCPP_VERSION)
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if (auto* buf = dynamic_cast<std::__stdoutbuf<char>*>(os.rdbuf()))
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if (FILE* f = get_file(*buf)) return write_console(f, data);
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#else
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ignore_unused(os, data);
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#endif
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return false;
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}
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inline bool write_ostream_unicode(std::wostream&,
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fmt::basic_string_view<wchar_t>) {
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return false;
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}
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// Write the content of buf to os.
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// It is a separate function rather than a part of vprint to simplify testing.
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template <typename Char>
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void write_buffer(std::basic_ostream<Char>& os, buffer<Char>& buf) {
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const Char* buf_data = buf.data();
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using unsigned_streamsize = std::make_unsigned<std::streamsize>::type;
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unsigned_streamsize size = buf.size();
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unsigned_streamsize max_size = to_unsigned(max_value<std::streamsize>());
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do {
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unsigned_streamsize n = size <= max_size ? size : max_size;
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os.write(buf_data, static_cast<std::streamsize>(n));
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buf_data += n;
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size -= n;
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} while (size != 0);
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}
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template <typename Char, typename T>
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void format_value(buffer<Char>& buf, const T& value,
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locale_ref loc = locale_ref()) {
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auto&& format_buf = formatbuf<std::basic_streambuf<Char>>(buf);
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auto&& output = std::basic_ostream<Char>(&format_buf);
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#if !defined(FMT_STATIC_THOUSANDS_SEPARATOR)
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if (loc) output.imbue(loc.get<std::locale>());
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#endif
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output << value;
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output.exceptions(std::ios_base::failbit | std::ios_base::badbit);
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}
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template <typename T> struct streamed_view { const T& value; };
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} // namespace detail
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// Formats an object of type T that has an overloaded ostream operator<<.
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template <typename Char>
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struct basic_ostream_formatter : formatter<basic_string_view<Char>, Char> {
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void set_debug_format() = delete;
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template <typename T, typename OutputIt>
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auto format(const T& value, basic_format_context<OutputIt, Char>& ctx) const
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-> OutputIt {
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auto buffer = basic_memory_buffer<Char>();
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detail::format_value(buffer, value, ctx.locale());
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return formatter<basic_string_view<Char>, Char>::format(
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{buffer.data(), buffer.size()}, ctx);
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}
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};
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using ostream_formatter = basic_ostream_formatter<char>;
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template <typename T, typename Char>
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struct formatter<detail::streamed_view<T>, Char>
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: basic_ostream_formatter<Char> {
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template <typename OutputIt>
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auto format(detail::streamed_view<T> view,
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basic_format_context<OutputIt, Char>& ctx) const -> OutputIt {
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return basic_ostream_formatter<Char>::format(view.value, ctx);
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}
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};
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/**
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\rst
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Returns a view that formats `value` via an ostream ``operator<<``.
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**Example**::
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fmt::print("Current thread id: {}\n",
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fmt::streamed(std::this_thread::get_id()));
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\endrst
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*/
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template <typename T>
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auto streamed(const T& value) -> detail::streamed_view<T> {
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return {value};
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}
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namespace detail {
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inline void vprint_directly(std::ostream& os, string_view format_str,
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format_args args) {
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auto buffer = memory_buffer();
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detail::vformat_to(buffer, format_str, args);
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detail::write_buffer(os, buffer);
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}
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} // namespace detail
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FMT_MODULE_EXPORT template <typename Char>
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void vprint(std::basic_ostream<Char>& os,
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basic_string_view<type_identity_t<Char>> format_str,
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basic_format_args<buffer_context<type_identity_t<Char>>> args) {
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auto buffer = basic_memory_buffer<Char>();
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detail::vformat_to(buffer, format_str, args);
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if (detail::write_ostream_unicode(os, {buffer.data(), buffer.size()})) return;
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detail::write_buffer(os, buffer);
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}
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/**
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\rst
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Prints formatted data to the stream *os*.
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**Example**::
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fmt::print(cerr, "Don't {}!", "panic");
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\endrst
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*/
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FMT_MODULE_EXPORT template <typename... T>
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void print(std::ostream& os, format_string<T...> fmt, T&&... args) {
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const auto& vargs = fmt::make_format_args(args...);
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if (detail::is_utf8())
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vprint(os, fmt, vargs);
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else
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detail::vprint_directly(os, fmt, vargs);
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}
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FMT_MODULE_EXPORT
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template <typename... Args>
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void print(std::wostream& os,
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basic_format_string<wchar_t, type_identity_t<Args>...> fmt,
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Args&&... args) {
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vprint(os, fmt, fmt::make_format_args<buffer_context<wchar_t>>(args...));
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}
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FMT_MODULE_EXPORT template <typename... T>
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void println(std::ostream& os, format_string<T...> fmt, T&&... args) {
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fmt::print(os, "{}\n", fmt::format(fmt, std::forward<T>(args)...));
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}
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FMT_MODULE_EXPORT
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template <typename... Args>
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void println(std::wostream& os,
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basic_format_string<wchar_t, type_identity_t<Args>...> fmt,
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Args&&... args) {
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print(os, L"{}\n", fmt::format(fmt, std::forward<Args>(args)...));
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}
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FMT_END_NAMESPACE
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#endif // FMT_OSTREAM_H_
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Vendored
+732
@@ -0,0 +1,732 @@
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// Formatting library for C++ - experimental range support
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//
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// Copyright (c) 2012 - present, Victor Zverovich
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// All rights reserved.
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//
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// For the license information refer to format.h.
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//
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// Copyright (c) 2018 - present, Remotion (Igor Schulz)
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// All Rights Reserved
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// {fmt} support for ranges, containers and types tuple interface.
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#ifndef FMT_RANGES_H_
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#define FMT_RANGES_H_
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#include <initializer_list>
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#include <tuple>
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#include <type_traits>
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#include "format.h"
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FMT_BEGIN_NAMESPACE
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namespace detail {
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template <typename Range, typename OutputIt>
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auto copy(const Range& range, OutputIt out) -> OutputIt {
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for (auto it = range.begin(), end = range.end(); it != end; ++it)
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*out++ = *it;
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return out;
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}
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template <typename OutputIt>
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auto copy(const char* str, OutputIt out) -> OutputIt {
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while (*str) *out++ = *str++;
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return out;
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}
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template <typename OutputIt> auto copy(char ch, OutputIt out) -> OutputIt {
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*out++ = ch;
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return out;
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}
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template <typename OutputIt> auto copy(wchar_t ch, OutputIt out) -> OutputIt {
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*out++ = ch;
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return out;
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}
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// Returns true if T has a std::string-like interface, like std::string_view.
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template <typename T> class is_std_string_like {
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template <typename U>
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static auto check(U* p)
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-> decltype((void)p->find('a'), p->length(), (void)p->data(), int());
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template <typename> static void check(...);
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public:
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static constexpr const bool value =
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is_string<T>::value ||
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std::is_convertible<T, std_string_view<char>>::value ||
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!std::is_void<decltype(check<T>(nullptr))>::value;
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};
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template <typename Char>
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struct is_std_string_like<fmt::basic_string_view<Char>> : std::true_type {};
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template <typename T> class is_map {
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template <typename U> static auto check(U*) -> typename U::mapped_type;
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template <typename> static void check(...);
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public:
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#ifdef FMT_FORMAT_MAP_AS_LIST // DEPRECATED!
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static constexpr const bool value = false;
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#else
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static constexpr const bool value =
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!std::is_void<decltype(check<T>(nullptr))>::value;
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#endif
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};
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template <typename T> class is_set {
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template <typename U> static auto check(U*) -> typename U::key_type;
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template <typename> static void check(...);
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public:
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#ifdef FMT_FORMAT_SET_AS_LIST // DEPRECATED!
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static constexpr const bool value = false;
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#else
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static constexpr const bool value =
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!std::is_void<decltype(check<T>(nullptr))>::value && !is_map<T>::value;
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#endif
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};
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template <typename... Ts> struct conditional_helper {};
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template <typename T, typename _ = void> struct is_range_ : std::false_type {};
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#if !FMT_MSC_VERSION || FMT_MSC_VERSION > 1800
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# define FMT_DECLTYPE_RETURN(val) \
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->decltype(val) { return val; } \
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static_assert( \
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true, "") // This makes it so that a semicolon is required after the
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// macro, which helps clang-format handle the formatting.
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// C array overload
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template <typename T, std::size_t N>
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auto range_begin(const T (&arr)[N]) -> const T* {
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return arr;
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}
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template <typename T, std::size_t N>
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auto range_end(const T (&arr)[N]) -> const T* {
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return arr + N;
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}
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template <typename T, typename Enable = void>
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struct has_member_fn_begin_end_t : std::false_type {};
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template <typename T>
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struct has_member_fn_begin_end_t<T, void_t<decltype(std::declval<T>().begin()),
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decltype(std::declval<T>().end())>>
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: std::true_type {};
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// Member function overload
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template <typename T>
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auto range_begin(T&& rng) FMT_DECLTYPE_RETURN(static_cast<T&&>(rng).begin());
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template <typename T>
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auto range_end(T&& rng) FMT_DECLTYPE_RETURN(static_cast<T&&>(rng).end());
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// ADL overload. Only participates in overload resolution if member functions
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// are not found.
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template <typename T>
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auto range_begin(T&& rng)
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-> enable_if_t<!has_member_fn_begin_end_t<T&&>::value,
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decltype(begin(static_cast<T&&>(rng)))> {
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return begin(static_cast<T&&>(rng));
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}
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template <typename T>
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auto range_end(T&& rng) -> enable_if_t<!has_member_fn_begin_end_t<T&&>::value,
|
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decltype(end(static_cast<T&&>(rng)))> {
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return end(static_cast<T&&>(rng));
|
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}
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template <typename T, typename Enable = void>
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struct has_const_begin_end : std::false_type {};
|
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template <typename T, typename Enable = void>
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struct has_mutable_begin_end : std::false_type {};
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template <typename T>
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struct has_const_begin_end<
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T,
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void_t<
|
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decltype(detail::range_begin(std::declval<const remove_cvref_t<T>&>())),
|
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decltype(detail::range_end(std::declval<const remove_cvref_t<T>&>()))>>
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: std::true_type {};
|
||||
|
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template <typename T>
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struct has_mutable_begin_end<
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T, void_t<decltype(detail::range_begin(std::declval<T>())),
|
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decltype(detail::range_end(std::declval<T>())),
|
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// the extra int here is because older versions of MSVC don't
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// SFINAE properly unless there are distinct types
|
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int>> : std::true_type {};
|
||||
|
||||
template <typename T>
|
||||
struct is_range_<T, void>
|
||||
: std::integral_constant<bool, (has_const_begin_end<T>::value ||
|
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has_mutable_begin_end<T>::value)> {};
|
||||
# undef FMT_DECLTYPE_RETURN
|
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#endif
|
||||
|
||||
// tuple_size and tuple_element check.
|
||||
template <typename T> class is_tuple_like_ {
|
||||
template <typename U>
|
||||
static auto check(U* p) -> decltype(std::tuple_size<U>::value, int());
|
||||
template <typename> static void check(...);
|
||||
|
||||
public:
|
||||
static constexpr const bool value =
|
||||
!std::is_void<decltype(check<T>(nullptr))>::value;
|
||||
};
|
||||
|
||||
// Check for integer_sequence
|
||||
#if defined(__cpp_lib_integer_sequence) || FMT_MSC_VERSION >= 1900
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template <typename T, T... N>
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using integer_sequence = std::integer_sequence<T, N...>;
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||||
template <size_t... N> using index_sequence = std::index_sequence<N...>;
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||||
template <size_t N> using make_index_sequence = std::make_index_sequence<N>;
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||||
#else
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template <typename T, T... N> struct integer_sequence {
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using value_type = T;
|
||||
|
||||
static FMT_CONSTEXPR size_t size() { return sizeof...(N); }
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||||
};
|
||||
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template <size_t... N> using index_sequence = integer_sequence<size_t, N...>;
|
||||
|
||||
template <typename T, size_t N, T... Ns>
|
||||
struct make_integer_sequence : make_integer_sequence<T, N - 1, N - 1, Ns...> {};
|
||||
template <typename T, T... Ns>
|
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struct make_integer_sequence<T, 0, Ns...> : integer_sequence<T, Ns...> {};
|
||||
|
||||
template <size_t N>
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||||
using make_index_sequence = make_integer_sequence<size_t, N>;
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||||
#endif
|
||||
|
||||
template <typename T>
|
||||
using tuple_index_sequence = make_index_sequence<std::tuple_size<T>::value>;
|
||||
|
||||
template <typename T, typename C, bool = is_tuple_like_<T>::value>
|
||||
class is_tuple_formattable_ {
|
||||
public:
|
||||
static constexpr const bool value = false;
|
||||
};
|
||||
template <typename T, typename C> class is_tuple_formattable_<T, C, true> {
|
||||
template <std::size_t... Is>
|
||||
static std::true_type check2(index_sequence<Is...>,
|
||||
integer_sequence<bool, (Is == Is)...>);
|
||||
static std::false_type check2(...);
|
||||
template <std::size_t... Is>
|
||||
static decltype(check2(
|
||||
index_sequence<Is...>{},
|
||||
integer_sequence<
|
||||
bool, (is_formattable<typename std::tuple_element<Is, T>::type,
|
||||
C>::value)...>{})) check(index_sequence<Is...>);
|
||||
|
||||
public:
|
||||
static constexpr const bool value =
|
||||
decltype(check(tuple_index_sequence<T>{}))::value;
|
||||
};
|
||||
|
||||
template <typename Tuple, typename F, size_t... Is>
|
||||
FMT_CONSTEXPR void for_each(index_sequence<Is...>, Tuple&& t, F&& f) {
|
||||
using std::get;
|
||||
// Using a free function get<Is>(Tuple) now.
|
||||
const int unused[] = {0, ((void)f(get<Is>(t)), 0)...};
|
||||
ignore_unused(unused);
|
||||
}
|
||||
|
||||
template <typename Tuple, typename F>
|
||||
FMT_CONSTEXPR void for_each(Tuple&& t, F&& f) {
|
||||
for_each(tuple_index_sequence<remove_cvref_t<Tuple>>(),
|
||||
std::forward<Tuple>(t), std::forward<F>(f));
|
||||
}
|
||||
|
||||
template <typename Tuple1, typename Tuple2, typename F, size_t... Is>
|
||||
void for_each2(index_sequence<Is...>, Tuple1&& t1, Tuple2&& t2, F&& f) {
|
||||
using std::get;
|
||||
const int unused[] = {0, ((void)f(get<Is>(t1), get<Is>(t2)), 0)...};
|
||||
ignore_unused(unused);
|
||||
}
|
||||
|
||||
template <typename Tuple1, typename Tuple2, typename F>
|
||||
void for_each2(Tuple1&& t1, Tuple2&& t2, F&& f) {
|
||||
for_each2(tuple_index_sequence<remove_cvref_t<Tuple1>>(),
|
||||
std::forward<Tuple1>(t1), std::forward<Tuple2>(t2),
|
||||
std::forward<F>(f));
|
||||
}
|
||||
|
||||
namespace tuple {
|
||||
// Workaround a bug in MSVC 2019 (v140).
|
||||
template <typename Char, typename... T>
|
||||
using result_t = std::tuple<formatter<remove_cvref_t<T>, Char>...>;
|
||||
|
||||
using std::get;
|
||||
template <typename Tuple, typename Char, std::size_t... Is>
|
||||
auto get_formatters(index_sequence<Is...>)
|
||||
-> result_t<Char, decltype(get<Is>(std::declval<Tuple>()))...>;
|
||||
} // namespace tuple
|
||||
|
||||
#if FMT_MSC_VERSION && FMT_MSC_VERSION < 1920
|
||||
// Older MSVC doesn't get the reference type correctly for arrays.
|
||||
template <typename R> struct range_reference_type_impl {
|
||||
using type = decltype(*detail::range_begin(std::declval<R&>()));
|
||||
};
|
||||
|
||||
template <typename T, std::size_t N> struct range_reference_type_impl<T[N]> {
|
||||
using type = T&;
|
||||
};
|
||||
|
||||
template <typename T>
|
||||
using range_reference_type = typename range_reference_type_impl<T>::type;
|
||||
#else
|
||||
template <typename Range>
|
||||
using range_reference_type =
|
||||
decltype(*detail::range_begin(std::declval<Range&>()));
|
||||
#endif
|
||||
|
||||
// We don't use the Range's value_type for anything, but we do need the Range's
|
||||
// reference type, with cv-ref stripped.
|
||||
template <typename Range>
|
||||
using uncvref_type = remove_cvref_t<range_reference_type<Range>>;
|
||||
|
||||
template <typename Formatter>
|
||||
FMT_CONSTEXPR auto maybe_set_debug_format(Formatter& f, bool set)
|
||||
-> decltype(f.set_debug_format(set)) {
|
||||
f.set_debug_format(set);
|
||||
}
|
||||
template <typename Formatter>
|
||||
FMT_CONSTEXPR void maybe_set_debug_format(Formatter&, ...) {}
|
||||
|
||||
// These are not generic lambdas for compatibility with C++11.
|
||||
template <typename ParseContext> struct parse_empty_specs {
|
||||
template <typename Formatter> FMT_CONSTEXPR void operator()(Formatter& f) {
|
||||
f.parse(ctx);
|
||||
detail::maybe_set_debug_format(f, true);
|
||||
}
|
||||
ParseContext& ctx;
|
||||
};
|
||||
template <typename FormatContext> struct format_tuple_element {
|
||||
using char_type = typename FormatContext::char_type;
|
||||
|
||||
template <typename T>
|
||||
void operator()(const formatter<T, char_type>& f, const T& v) {
|
||||
if (i > 0)
|
||||
ctx.advance_to(detail::copy_str<char_type>(separator, ctx.out()));
|
||||
ctx.advance_to(f.format(v, ctx));
|
||||
++i;
|
||||
}
|
||||
|
||||
int i;
|
||||
FormatContext& ctx;
|
||||
basic_string_view<char_type> separator;
|
||||
};
|
||||
|
||||
} // namespace detail
|
||||
|
||||
template <typename T> struct is_tuple_like {
|
||||
static constexpr const bool value =
|
||||
detail::is_tuple_like_<T>::value && !detail::is_range_<T>::value;
|
||||
};
|
||||
|
||||
template <typename T, typename C> struct is_tuple_formattable {
|
||||
static constexpr const bool value =
|
||||
detail::is_tuple_formattable_<T, C>::value;
|
||||
};
|
||||
|
||||
template <typename Tuple, typename Char>
|
||||
struct formatter<Tuple, Char,
|
||||
enable_if_t<fmt::is_tuple_like<Tuple>::value &&
|
||||
fmt::is_tuple_formattable<Tuple, Char>::value>> {
|
||||
private:
|
||||
decltype(detail::tuple::get_formatters<Tuple, Char>(
|
||||
detail::tuple_index_sequence<Tuple>())) formatters_;
|
||||
|
||||
basic_string_view<Char> separator_ = detail::string_literal<Char, ',', ' '>{};
|
||||
basic_string_view<Char> opening_bracket_ =
|
||||
detail::string_literal<Char, '('>{};
|
||||
basic_string_view<Char> closing_bracket_ =
|
||||
detail::string_literal<Char, ')'>{};
|
||||
|
||||
public:
|
||||
FMT_CONSTEXPR formatter() {}
|
||||
|
||||
FMT_CONSTEXPR void set_separator(basic_string_view<Char> sep) {
|
||||
separator_ = sep;
|
||||
}
|
||||
|
||||
FMT_CONSTEXPR void set_brackets(basic_string_view<Char> open,
|
||||
basic_string_view<Char> close) {
|
||||
opening_bracket_ = open;
|
||||
closing_bracket_ = close;
|
||||
}
|
||||
|
||||
template <typename ParseContext>
|
||||
FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
|
||||
auto it = ctx.begin();
|
||||
if (it != ctx.end() && *it != '}')
|
||||
FMT_THROW(format_error("invalid format specifier"));
|
||||
detail::for_each(formatters_, detail::parse_empty_specs<ParseContext>{ctx});
|
||||
return it;
|
||||
}
|
||||
|
||||
template <typename FormatContext>
|
||||
auto format(const Tuple& value, FormatContext& ctx) const
|
||||
-> decltype(ctx.out()) {
|
||||
ctx.advance_to(detail::copy_str<Char>(opening_bracket_, ctx.out()));
|
||||
detail::for_each2(
|
||||
formatters_, value,
|
||||
detail::format_tuple_element<FormatContext>{0, ctx, separator_});
|
||||
return detail::copy_str<Char>(closing_bracket_, ctx.out());
|
||||
}
|
||||
};
|
||||
|
||||
template <typename T, typename Char> struct is_range {
|
||||
static constexpr const bool value =
|
||||
detail::is_range_<T>::value && !detail::is_std_string_like<T>::value &&
|
||||
!std::is_convertible<T, std::basic_string<Char>>::value &&
|
||||
!std::is_convertible<T, detail::std_string_view<Char>>::value;
|
||||
};
|
||||
|
||||
namespace detail {
|
||||
template <typename Context> struct range_mapper {
|
||||
using mapper = arg_mapper<Context>;
|
||||
|
||||
template <typename T,
|
||||
FMT_ENABLE_IF(has_formatter<remove_cvref_t<T>, Context>::value)>
|
||||
static auto map(T&& value) -> T&& {
|
||||
return static_cast<T&&>(value);
|
||||
}
|
||||
template <typename T,
|
||||
FMT_ENABLE_IF(!has_formatter<remove_cvref_t<T>, Context>::value)>
|
||||
static auto map(T&& value)
|
||||
-> decltype(mapper().map(static_cast<T&&>(value))) {
|
||||
return mapper().map(static_cast<T&&>(value));
|
||||
}
|
||||
};
|
||||
|
||||
template <typename Char, typename Element>
|
||||
using range_formatter_type =
|
||||
formatter<remove_cvref_t<decltype(range_mapper<buffer_context<Char>>{}.map(
|
||||
std::declval<Element>()))>,
|
||||
Char>;
|
||||
|
||||
template <typename R>
|
||||
using maybe_const_range =
|
||||
conditional_t<has_const_begin_end<R>::value, const R, R>;
|
||||
|
||||
// Workaround a bug in MSVC 2015 and earlier.
|
||||
#if !FMT_MSC_VERSION || FMT_MSC_VERSION >= 1910
|
||||
template <typename R, typename Char>
|
||||
struct is_formattable_delayed
|
||||
: is_formattable<uncvref_type<maybe_const_range<R>>, Char> {};
|
||||
#endif
|
||||
} // namespace detail
|
||||
|
||||
template <typename T, typename Char, typename Enable = void>
|
||||
struct range_formatter;
|
||||
|
||||
template <typename T, typename Char>
|
||||
struct range_formatter<
|
||||
T, Char,
|
||||
enable_if_t<conjunction<std::is_same<T, remove_cvref_t<T>>,
|
||||
is_formattable<T, Char>>::value>> {
|
||||
private:
|
||||
detail::range_formatter_type<Char, T> underlying_;
|
||||
basic_string_view<Char> separator_ = detail::string_literal<Char, ',', ' '>{};
|
||||
basic_string_view<Char> opening_bracket_ =
|
||||
detail::string_literal<Char, '['>{};
|
||||
basic_string_view<Char> closing_bracket_ =
|
||||
detail::string_literal<Char, ']'>{};
|
||||
|
||||
public:
|
||||
FMT_CONSTEXPR range_formatter() {}
|
||||
|
||||
FMT_CONSTEXPR auto underlying() -> detail::range_formatter_type<Char, T>& {
|
||||
return underlying_;
|
||||
}
|
||||
|
||||
FMT_CONSTEXPR void set_separator(basic_string_view<Char> sep) {
|
||||
separator_ = sep;
|
||||
}
|
||||
|
||||
FMT_CONSTEXPR void set_brackets(basic_string_view<Char> open,
|
||||
basic_string_view<Char> close) {
|
||||
opening_bracket_ = open;
|
||||
closing_bracket_ = close;
|
||||
}
|
||||
|
||||
template <typename ParseContext>
|
||||
FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
|
||||
auto it = ctx.begin();
|
||||
auto end = ctx.end();
|
||||
|
||||
if (it != end && *it == 'n') {
|
||||
set_brackets({}, {});
|
||||
++it;
|
||||
}
|
||||
|
||||
if (it != end && *it != '}') {
|
||||
if (*it != ':') FMT_THROW(format_error("invalid format specifier"));
|
||||
++it;
|
||||
} else {
|
||||
detail::maybe_set_debug_format(underlying_, true);
|
||||
}
|
||||
|
||||
ctx.advance_to(it);
|
||||
return underlying_.parse(ctx);
|
||||
}
|
||||
|
||||
template <typename R, typename FormatContext>
|
||||
auto format(R&& range, FormatContext& ctx) const -> decltype(ctx.out()) {
|
||||
detail::range_mapper<buffer_context<Char>> mapper;
|
||||
auto out = ctx.out();
|
||||
out = detail::copy_str<Char>(opening_bracket_, out);
|
||||
int i = 0;
|
||||
auto it = detail::range_begin(range);
|
||||
auto end = detail::range_end(range);
|
||||
for (; it != end; ++it) {
|
||||
if (i > 0) out = detail::copy_str<Char>(separator_, out);
|
||||
ctx.advance_to(out);
|
||||
out = underlying_.format(mapper.map(*it), ctx);
|
||||
++i;
|
||||
}
|
||||
out = detail::copy_str<Char>(closing_bracket_, out);
|
||||
return out;
|
||||
}
|
||||
};
|
||||
|
||||
enum class range_format { disabled, map, set, sequence, string, debug_string };
|
||||
|
||||
namespace detail {
|
||||
template <typename T>
|
||||
struct range_format_kind_
|
||||
: std::integral_constant<range_format,
|
||||
std::is_same<uncvref_type<T>, T>::value
|
||||
? range_format::disabled
|
||||
: is_map<T>::value ? range_format::map
|
||||
: is_set<T>::value ? range_format::set
|
||||
: range_format::sequence> {};
|
||||
|
||||
template <range_format K, typename R, typename Char, typename Enable = void>
|
||||
struct range_default_formatter;
|
||||
|
||||
template <range_format K>
|
||||
using range_format_constant = std::integral_constant<range_format, K>;
|
||||
|
||||
template <range_format K, typename R, typename Char>
|
||||
struct range_default_formatter<
|
||||
K, R, Char,
|
||||
enable_if_t<(K == range_format::sequence || K == range_format::map ||
|
||||
K == range_format::set)>> {
|
||||
using range_type = detail::maybe_const_range<R>;
|
||||
range_formatter<detail::uncvref_type<range_type>, Char> underlying_;
|
||||
|
||||
FMT_CONSTEXPR range_default_formatter() { init(range_format_constant<K>()); }
|
||||
|
||||
FMT_CONSTEXPR void init(range_format_constant<range_format::set>) {
|
||||
underlying_.set_brackets(detail::string_literal<Char, '{'>{},
|
||||
detail::string_literal<Char, '}'>{});
|
||||
}
|
||||
|
||||
FMT_CONSTEXPR void init(range_format_constant<range_format::map>) {
|
||||
underlying_.set_brackets(detail::string_literal<Char, '{'>{},
|
||||
detail::string_literal<Char, '}'>{});
|
||||
underlying_.underlying().set_brackets({}, {});
|
||||
underlying_.underlying().set_separator(
|
||||
detail::string_literal<Char, ':', ' '>{});
|
||||
}
|
||||
|
||||
FMT_CONSTEXPR void init(range_format_constant<range_format::sequence>) {}
|
||||
|
||||
template <typename ParseContext>
|
||||
FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
|
||||
return underlying_.parse(ctx);
|
||||
}
|
||||
|
||||
template <typename FormatContext>
|
||||
auto format(range_type& range, FormatContext& ctx) const
|
||||
-> decltype(ctx.out()) {
|
||||
return underlying_.format(range, ctx);
|
||||
}
|
||||
};
|
||||
} // namespace detail
|
||||
|
||||
template <typename T, typename Char, typename Enable = void>
|
||||
struct range_format_kind
|
||||
: conditional_t<
|
||||
is_range<T, Char>::value, detail::range_format_kind_<T>,
|
||||
std::integral_constant<range_format, range_format::disabled>> {};
|
||||
|
||||
template <typename R, typename Char>
|
||||
struct formatter<
|
||||
R, Char,
|
||||
enable_if_t<conjunction<bool_constant<range_format_kind<R, Char>::value !=
|
||||
range_format::disabled>
|
||||
// Workaround a bug in MSVC 2015 and earlier.
|
||||
#if !FMT_MSC_VERSION || FMT_MSC_VERSION >= 1910
|
||||
,
|
||||
detail::is_formattable_delayed<R, Char>
|
||||
#endif
|
||||
>::value>>
|
||||
: detail::range_default_formatter<range_format_kind<R, Char>::value, R,
|
||||
Char> {
|
||||
};
|
||||
|
||||
template <typename Char, typename... T> struct tuple_join_view : detail::view {
|
||||
const std::tuple<T...>& tuple;
|
||||
basic_string_view<Char> sep;
|
||||
|
||||
tuple_join_view(const std::tuple<T...>& t, basic_string_view<Char> s)
|
||||
: tuple(t), sep{s} {}
|
||||
};
|
||||
|
||||
// Define FMT_TUPLE_JOIN_SPECIFIERS to enable experimental format specifiers
|
||||
// support in tuple_join. It is disabled by default because of issues with
|
||||
// the dynamic width and precision.
|
||||
#ifndef FMT_TUPLE_JOIN_SPECIFIERS
|
||||
# define FMT_TUPLE_JOIN_SPECIFIERS 0
|
||||
#endif
|
||||
|
||||
template <typename Char, typename... T>
|
||||
struct formatter<tuple_join_view<Char, T...>, Char> {
|
||||
template <typename ParseContext>
|
||||
FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
|
||||
return do_parse(ctx, std::integral_constant<size_t, sizeof...(T)>());
|
||||
}
|
||||
|
||||
template <typename FormatContext>
|
||||
auto format(const tuple_join_view<Char, T...>& value,
|
||||
FormatContext& ctx) const -> typename FormatContext::iterator {
|
||||
return do_format(value, ctx,
|
||||
std::integral_constant<size_t, sizeof...(T)>());
|
||||
}
|
||||
|
||||
private:
|
||||
std::tuple<formatter<typename std::decay<T>::type, Char>...> formatters_;
|
||||
|
||||
template <typename ParseContext>
|
||||
FMT_CONSTEXPR auto do_parse(ParseContext& ctx,
|
||||
std::integral_constant<size_t, 0>)
|
||||
-> decltype(ctx.begin()) {
|
||||
return ctx.begin();
|
||||
}
|
||||
|
||||
template <typename ParseContext, size_t N>
|
||||
FMT_CONSTEXPR auto do_parse(ParseContext& ctx,
|
||||
std::integral_constant<size_t, N>)
|
||||
-> decltype(ctx.begin()) {
|
||||
auto end = ctx.begin();
|
||||
#if FMT_TUPLE_JOIN_SPECIFIERS
|
||||
end = std::get<sizeof...(T) - N>(formatters_).parse(ctx);
|
||||
if (N > 1) {
|
||||
auto end1 = do_parse(ctx, std::integral_constant<size_t, N - 1>());
|
||||
if (end != end1)
|
||||
FMT_THROW(format_error("incompatible format specs for tuple elements"));
|
||||
}
|
||||
#endif
|
||||
return end;
|
||||
}
|
||||
|
||||
template <typename FormatContext>
|
||||
auto do_format(const tuple_join_view<Char, T...>&, FormatContext& ctx,
|
||||
std::integral_constant<size_t, 0>) const ->
|
||||
typename FormatContext::iterator {
|
||||
return ctx.out();
|
||||
}
|
||||
|
||||
template <typename FormatContext, size_t N>
|
||||
auto do_format(const tuple_join_view<Char, T...>& value, FormatContext& ctx,
|
||||
std::integral_constant<size_t, N>) const ->
|
||||
typename FormatContext::iterator {
|
||||
auto out = std::get<sizeof...(T) - N>(formatters_)
|
||||
.format(std::get<sizeof...(T) - N>(value.tuple), ctx);
|
||||
if (N > 1) {
|
||||
out = std::copy(value.sep.begin(), value.sep.end(), out);
|
||||
ctx.advance_to(out);
|
||||
return do_format(value, ctx, std::integral_constant<size_t, N - 1>());
|
||||
}
|
||||
return out;
|
||||
}
|
||||
};
|
||||
|
||||
namespace detail {
|
||||
// Check if T has an interface like a container adaptor (e.g. std::stack,
|
||||
// std::queue, std::priority_queue).
|
||||
template <typename T> class is_container_adaptor_like {
|
||||
template <typename U> static auto check(U* p) -> typename U::container_type;
|
||||
template <typename> static void check(...);
|
||||
|
||||
public:
|
||||
static constexpr const bool value =
|
||||
!std::is_void<decltype(check<T>(nullptr))>::value;
|
||||
};
|
||||
|
||||
template <typename Container> struct all {
|
||||
const Container& c;
|
||||
auto begin() const -> typename Container::const_iterator { return c.begin(); }
|
||||
auto end() const -> typename Container::const_iterator { return c.end(); }
|
||||
};
|
||||
} // namespace detail
|
||||
|
||||
template <typename T, typename Char>
|
||||
struct formatter<T, Char,
|
||||
enable_if_t<detail::is_container_adaptor_like<T>::value>>
|
||||
: formatter<detail::all<typename T::container_type>, Char> {
|
||||
using all = detail::all<typename T::container_type>;
|
||||
template <typename FormatContext>
|
||||
auto format(const T& t, FormatContext& ctx) const -> decltype(ctx.out()) {
|
||||
struct getter : T {
|
||||
static auto get(const T& t) -> all {
|
||||
return {t.*(&getter::c)}; // Access c through the derived class.
|
||||
}
|
||||
};
|
||||
return formatter<all>::format(getter::get(t), ctx);
|
||||
}
|
||||
};
|
||||
|
||||
FMT_BEGIN_EXPORT
|
||||
|
||||
/**
|
||||
\rst
|
||||
Returns an object that formats `tuple` with elements separated by `sep`.
|
||||
|
||||
**Example**::
|
||||
|
||||
std::tuple<int, char> t = {1, 'a'};
|
||||
fmt::print("{}", fmt::join(t, ", "));
|
||||
// Output: "1, a"
|
||||
\endrst
|
||||
*/
|
||||
template <typename... T>
|
||||
FMT_CONSTEXPR auto join(const std::tuple<T...>& tuple, string_view sep)
|
||||
-> tuple_join_view<char, T...> {
|
||||
return {tuple, sep};
|
||||
}
|
||||
|
||||
template <typename... T>
|
||||
FMT_CONSTEXPR auto join(const std::tuple<T...>& tuple,
|
||||
basic_string_view<wchar_t> sep)
|
||||
-> tuple_join_view<wchar_t, T...> {
|
||||
return {tuple, sep};
|
||||
}
|
||||
|
||||
/**
|
||||
\rst
|
||||
Returns an object that formats `initializer_list` with elements separated by
|
||||
`sep`.
|
||||
|
||||
**Example**::
|
||||
|
||||
fmt::print("{}", fmt::join({1, 2, 3}, ", "));
|
||||
// Output: "1, 2, 3"
|
||||
\endrst
|
||||
*/
|
||||
template <typename T>
|
||||
auto join(std::initializer_list<T> list, string_view sep)
|
||||
-> join_view<const T*, const T*> {
|
||||
return join(std::begin(list), std::end(list), sep);
|
||||
}
|
||||
|
||||
FMT_END_EXPORT
|
||||
FMT_END_NAMESPACE
|
||||
|
||||
#endif // FMT_RANGES_H_
|
||||
Vendored
+349
@@ -0,0 +1,349 @@
|
||||
// Formatting library for C++ - formatters for standard library types
|
||||
//
|
||||
// Copyright (c) 2012 - present, Victor Zverovich
|
||||
// All rights reserved.
|
||||
//
|
||||
// For the license information refer to format.h.
|
||||
|
||||
#ifndef FMT_STD_H_
|
||||
#define FMT_STD_H_
|
||||
|
||||
#include <cstdlib>
|
||||
#include <exception>
|
||||
#include <memory>
|
||||
#include <thread>
|
||||
#include <type_traits>
|
||||
#include <typeinfo>
|
||||
#include <utility>
|
||||
|
||||
#include "ostream.h"
|
||||
|
||||
#if FMT_HAS_INCLUDE(<version>)
|
||||
# include <version>
|
||||
#endif
|
||||
// Checking FMT_CPLUSPLUS for warning suppression in MSVC.
|
||||
#if FMT_CPLUSPLUS >= 201703L
|
||||
# if FMT_HAS_INCLUDE(<filesystem>)
|
||||
# include <filesystem>
|
||||
# endif
|
||||
# if FMT_HAS_INCLUDE(<variant>)
|
||||
# include <variant>
|
||||
# endif
|
||||
# if FMT_HAS_INCLUDE(<optional>)
|
||||
# include <optional>
|
||||
# endif
|
||||
#endif
|
||||
|
||||
// GCC 4 does not support FMT_HAS_INCLUDE.
|
||||
#if FMT_HAS_INCLUDE(<cxxabi.h>) || defined(__GLIBCXX__)
|
||||
# include <cxxabi.h>
|
||||
// Android NDK with gabi++ library on some architectures does not implement
|
||||
// abi::__cxa_demangle().
|
||||
# ifndef __GABIXX_CXXABI_H__
|
||||
# define FMT_HAS_ABI_CXA_DEMANGLE
|
||||
# endif
|
||||
#endif
|
||||
|
||||
#ifdef __cpp_lib_filesystem
|
||||
FMT_BEGIN_NAMESPACE
|
||||
|
||||
namespace detail {
|
||||
|
||||
template <typename Char>
|
||||
void write_escaped_path(basic_memory_buffer<Char>& quoted,
|
||||
const std::filesystem::path& p) {
|
||||
write_escaped_string<Char>(std::back_inserter(quoted), p.string<Char>());
|
||||
}
|
||||
# ifdef _WIN32
|
||||
template <>
|
||||
inline void write_escaped_path<char>(memory_buffer& quoted,
|
||||
const std::filesystem::path& p) {
|
||||
auto buf = basic_memory_buffer<wchar_t>();
|
||||
write_escaped_string<wchar_t>(std::back_inserter(buf), p.native());
|
||||
// Convert UTF-16 to UTF-8.
|
||||
if (!unicode_to_utf8<wchar_t>::convert(quoted, {buf.data(), buf.size()}))
|
||||
FMT_THROW(std::runtime_error("invalid utf16"));
|
||||
}
|
||||
# endif
|
||||
template <>
|
||||
inline void write_escaped_path<std::filesystem::path::value_type>(
|
||||
basic_memory_buffer<std::filesystem::path::value_type>& quoted,
|
||||
const std::filesystem::path& p) {
|
||||
write_escaped_string<std::filesystem::path::value_type>(
|
||||
std::back_inserter(quoted), p.native());
|
||||
}
|
||||
|
||||
} // namespace detail
|
||||
|
||||
FMT_MODULE_EXPORT
|
||||
template <typename Char>
|
||||
struct formatter<std::filesystem::path, Char>
|
||||
: formatter<basic_string_view<Char>> {
|
||||
template <typename ParseContext> FMT_CONSTEXPR auto parse(ParseContext& ctx) {
|
||||
auto out = formatter<basic_string_view<Char>>::parse(ctx);
|
||||
this->set_debug_format(false);
|
||||
return out;
|
||||
}
|
||||
template <typename FormatContext>
|
||||
auto format(const std::filesystem::path& p, FormatContext& ctx) const ->
|
||||
typename FormatContext::iterator {
|
||||
auto quoted = basic_memory_buffer<Char>();
|
||||
detail::write_escaped_path(quoted, p);
|
||||
return formatter<basic_string_view<Char>>::format(
|
||||
basic_string_view<Char>(quoted.data(), quoted.size()), ctx);
|
||||
}
|
||||
};
|
||||
FMT_END_NAMESPACE
|
||||
#endif
|
||||
|
||||
FMT_BEGIN_NAMESPACE
|
||||
FMT_MODULE_EXPORT
|
||||
template <typename Char>
|
||||
struct formatter<std::thread::id, Char> : basic_ostream_formatter<Char> {};
|
||||
FMT_END_NAMESPACE
|
||||
|
||||
#ifdef __cpp_lib_optional
|
||||
FMT_BEGIN_NAMESPACE
|
||||
FMT_MODULE_EXPORT
|
||||
template <typename T, typename Char>
|
||||
struct formatter<std::optional<T>, Char,
|
||||
std::enable_if_t<is_formattable<T, Char>::value>> {
|
||||
private:
|
||||
formatter<T, Char> underlying_;
|
||||
static constexpr basic_string_view<Char> optional =
|
||||
detail::string_literal<Char, 'o', 'p', 't', 'i', 'o', 'n', 'a', 'l',
|
||||
'('>{};
|
||||
static constexpr basic_string_view<Char> none =
|
||||
detail::string_literal<Char, 'n', 'o', 'n', 'e'>{};
|
||||
|
||||
template <class U>
|
||||
FMT_CONSTEXPR static auto maybe_set_debug_format(U& u, bool set)
|
||||
-> decltype(u.set_debug_format(set)) {
|
||||
u.set_debug_format(set);
|
||||
}
|
||||
|
||||
template <class U>
|
||||
FMT_CONSTEXPR static void maybe_set_debug_format(U&, ...) {}
|
||||
|
||||
public:
|
||||
template <typename ParseContext> FMT_CONSTEXPR auto parse(ParseContext& ctx) {
|
||||
maybe_set_debug_format(underlying_, true);
|
||||
return underlying_.parse(ctx);
|
||||
}
|
||||
|
||||
template <typename FormatContext>
|
||||
auto format(std::optional<T> const& opt, FormatContext& ctx) const
|
||||
-> decltype(ctx.out()) {
|
||||
if (!opt) return detail::write<Char>(ctx.out(), none);
|
||||
|
||||
auto out = ctx.out();
|
||||
out = detail::write<Char>(out, optional);
|
||||
ctx.advance_to(out);
|
||||
out = underlying_.format(*opt, ctx);
|
||||
return detail::write(out, ')');
|
||||
}
|
||||
};
|
||||
FMT_END_NAMESPACE
|
||||
#endif // __cpp_lib_optional
|
||||
|
||||
#ifdef __cpp_lib_variant
|
||||
FMT_BEGIN_NAMESPACE
|
||||
FMT_MODULE_EXPORT
|
||||
template <typename Char> struct formatter<std::monostate, Char> {
|
||||
template <typename ParseContext>
|
||||
FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
|
||||
return ctx.begin();
|
||||
}
|
||||
|
||||
template <typename FormatContext>
|
||||
auto format(const std::monostate&, FormatContext& ctx) const
|
||||
-> decltype(ctx.out()) {
|
||||
auto out = ctx.out();
|
||||
out = detail::write<Char>(out, "monostate");
|
||||
return out;
|
||||
}
|
||||
};
|
||||
|
||||
namespace detail {
|
||||
|
||||
template <typename T>
|
||||
using variant_index_sequence =
|
||||
std::make_index_sequence<std::variant_size<T>::value>;
|
||||
|
||||
template <typename> struct is_variant_like_ : std::false_type {};
|
||||
template <typename... Types>
|
||||
struct is_variant_like_<std::variant<Types...>> : std::true_type {};
|
||||
|
||||
// formattable element check.
|
||||
template <typename T, typename C> class is_variant_formattable_ {
|
||||
template <std::size_t... Is>
|
||||
static std::conjunction<
|
||||
is_formattable<std::variant_alternative_t<Is, T>, C>...>
|
||||
check(std::index_sequence<Is...>);
|
||||
|
||||
public:
|
||||
static constexpr const bool value =
|
||||
decltype(check(variant_index_sequence<T>{}))::value;
|
||||
};
|
||||
|
||||
template <typename Char, typename OutputIt, typename T>
|
||||
auto write_variant_alternative(OutputIt out, const T& v) -> OutputIt {
|
||||
if constexpr (is_string<T>::value)
|
||||
return write_escaped_string<Char>(out, detail::to_string_view(v));
|
||||
else if constexpr (std::is_same_v<T, Char>)
|
||||
return write_escaped_char(out, v);
|
||||
else
|
||||
return write<Char>(out, v);
|
||||
}
|
||||
|
||||
} // namespace detail
|
||||
template <typename T> struct is_variant_like {
|
||||
static constexpr const bool value = detail::is_variant_like_<T>::value;
|
||||
};
|
||||
|
||||
template <typename T, typename C> struct is_variant_formattable {
|
||||
static constexpr const bool value =
|
||||
detail::is_variant_formattable_<T, C>::value;
|
||||
};
|
||||
|
||||
FMT_MODULE_EXPORT
|
||||
template <typename Variant, typename Char>
|
||||
struct formatter<
|
||||
Variant, Char,
|
||||
std::enable_if_t<std::conjunction_v<
|
||||
is_variant_like<Variant>, is_variant_formattable<Variant, Char>>>> {
|
||||
template <typename ParseContext>
|
||||
FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
|
||||
return ctx.begin();
|
||||
}
|
||||
|
||||
template <typename FormatContext>
|
||||
auto format(const Variant& value, FormatContext& ctx) const
|
||||
-> decltype(ctx.out()) {
|
||||
auto out = ctx.out();
|
||||
|
||||
out = detail::write<Char>(out, "variant(");
|
||||
try {
|
||||
std::visit(
|
||||
[&](const auto& v) {
|
||||
out = detail::write_variant_alternative<Char>(out, v);
|
||||
},
|
||||
value);
|
||||
} catch (const std::bad_variant_access&) {
|
||||
detail::write<Char>(out, "valueless by exception");
|
||||
}
|
||||
*out++ = ')';
|
||||
return out;
|
||||
}
|
||||
};
|
||||
FMT_END_NAMESPACE
|
||||
#endif // __cpp_lib_variant
|
||||
|
||||
FMT_BEGIN_NAMESPACE
|
||||
FMT_MODULE_EXPORT
|
||||
template <typename Char> struct formatter<std::error_code, Char> {
|
||||
template <typename ParseContext>
|
||||
FMT_CONSTEXPR auto parse(ParseContext& ctx) -> decltype(ctx.begin()) {
|
||||
return ctx.begin();
|
||||
}
|
||||
|
||||
template <typename FormatContext>
|
||||
FMT_CONSTEXPR auto format(const std::error_code& ec, FormatContext& ctx) const
|
||||
-> decltype(ctx.out()) {
|
||||
auto out = ctx.out();
|
||||
out = detail::write_bytes(out, ec.category().name(), format_specs<Char>());
|
||||
out = detail::write<Char>(out, Char(':'));
|
||||
out = detail::write<Char>(out, ec.value());
|
||||
return out;
|
||||
}
|
||||
};
|
||||
|
||||
FMT_MODULE_EXPORT
|
||||
template <typename T, typename Char>
|
||||
struct formatter<
|
||||
T, Char,
|
||||
typename std::enable_if<std::is_base_of<std::exception, T>::value>::type> {
|
||||
private:
|
||||
bool with_typename_ = false;
|
||||
|
||||
public:
|
||||
FMT_CONSTEXPR auto parse(basic_format_parse_context<Char>& ctx)
|
||||
-> decltype(ctx.begin()) {
|
||||
auto it = ctx.begin();
|
||||
auto end = ctx.end();
|
||||
if (it == end || *it == '}') return it;
|
||||
if (*it == 't') {
|
||||
++it;
|
||||
with_typename_ = true;
|
||||
}
|
||||
return it;
|
||||
}
|
||||
|
||||
template <typename OutputIt>
|
||||
auto format(const std::exception& ex,
|
||||
basic_format_context<OutputIt, Char>& ctx) const -> OutputIt {
|
||||
format_specs<Char> spec;
|
||||
auto out = ctx.out();
|
||||
if (!with_typename_)
|
||||
return detail::write_bytes(out, string_view(ex.what()), spec);
|
||||
|
||||
const std::type_info& ti = typeid(ex);
|
||||
#ifdef FMT_HAS_ABI_CXA_DEMANGLE
|
||||
int status = 0;
|
||||
std::size_t size = 0;
|
||||
std::unique_ptr<char, decltype(&std::free)> demangled_name_ptr(
|
||||
abi::__cxa_demangle(ti.name(), nullptr, &size, &status), &std::free);
|
||||
|
||||
string_view demangled_name_view;
|
||||
if (demangled_name_ptr) {
|
||||
demangled_name_view = demangled_name_ptr.get();
|
||||
|
||||
// Normalization of stdlib inline namespace names.
|
||||
// libc++ inline namespaces.
|
||||
// std::__1::* -> std::*
|
||||
// std::__1::__fs::* -> std::*
|
||||
// libstdc++ inline namespaces.
|
||||
// std::__cxx11::* -> std::*
|
||||
// std::filesystem::__cxx11::* -> std::filesystem::*
|
||||
if (demangled_name_view.starts_with("std::")) {
|
||||
char* begin = demangled_name_ptr.get();
|
||||
char* to = begin + 5; // std::
|
||||
for (char *from = to, *end = begin + demangled_name_view.size();
|
||||
from < end;) {
|
||||
// This is safe, because demangled_name is NUL-terminated.
|
||||
if (from[0] == '_' && from[1] == '_') {
|
||||
char* next = from + 1;
|
||||
while (next < end && *next != ':') next++;
|
||||
if (next[0] == ':' && next[1] == ':') {
|
||||
from = next + 2;
|
||||
continue;
|
||||
}
|
||||
}
|
||||
*to++ = *from++;
|
||||
}
|
||||
demangled_name_view = {begin, detail::to_unsigned(to - begin)};
|
||||
}
|
||||
} else {
|
||||
demangled_name_view = string_view(ti.name());
|
||||
}
|
||||
out = detail::write_bytes(out, demangled_name_view, spec);
|
||||
#elif FMT_MSC_VERSION
|
||||
string_view demangled_name_view(ti.name());
|
||||
if (demangled_name_view.starts_with("class "))
|
||||
demangled_name_view.remove_prefix(6);
|
||||
else if (demangled_name_view.starts_with("struct "))
|
||||
demangled_name_view.remove_prefix(7);
|
||||
out = detail::write_bytes(out, demangled_name_view, spec);
|
||||
#else
|
||||
out = detail::write_bytes(out, string_view(ti.name()), spec);
|
||||
#endif
|
||||
out = detail::write<Char>(out, Char(':'));
|
||||
out = detail::write<Char>(out, Char(' '));
|
||||
out = detail::write_bytes(out, string_view(ex.what()), spec);
|
||||
|
||||
return out;
|
||||
}
|
||||
};
|
||||
FMT_END_NAMESPACE
|
||||
|
||||
#endif // FMT_STD_H_
|
||||
Reference in New Issue
Block a user