From bc524d70253a4ab2fe40c3ca3e5666e267c0a4d1 Mon Sep 17 00:00:00 2001 From: Lexi Winter Date: Sun, 29 Jun 2025 19:25:29 +0100 Subject: import catch2 3.8.1 --- src/catch2/catch_tostring.cpp | 257 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 257 insertions(+) create mode 100644 src/catch2/catch_tostring.cpp (limited to 'src/catch2/catch_tostring.cpp') diff --git a/src/catch2/catch_tostring.cpp b/src/catch2/catch_tostring.cpp new file mode 100644 index 0000000..83327cf --- /dev/null +++ b/src/catch2/catch_tostring.cpp @@ -0,0 +1,257 @@ + +// Copyright Catch2 Authors +// Distributed under the Boost Software License, Version 1.0. +// (See accompanying file LICENSE.txt or copy at +// https://www.boost.org/LICENSE_1_0.txt) + +// SPDX-License-Identifier: BSL-1.0 + +#include +#include +#include +#include + +#include +#include + +namespace Catch { + +namespace Detail { + + namespace { + const int hexThreshold = 255; + + struct Endianness { + enum Arch : uint8_t { + Big, + Little + }; + + static Arch which() { + int one = 1; + // If the lowest byte we read is non-zero, we can assume + // that little endian format is used. + auto value = *reinterpret_cast(&one); + return value ? Little : Big; + } + }; + + template + std::string fpToString(T value, int precision) { + if (Catch::isnan(value)) { + return "nan"; + } + + ReusableStringStream rss; + rss << std::setprecision(precision) + << std::fixed + << value; + std::string d = rss.str(); + std::size_t i = d.find_last_not_of('0'); + if (i != std::string::npos && i != d.size() - 1) { + if (d[i] == '.') + i++; + d = d.substr(0, i + 1); + } + return d; + } + } // end unnamed namespace + + std::string convertIntoString(StringRef string, bool escapeInvisibles) { + std::string ret; + // This is enough for the "don't escape invisibles" case, and a good + // lower bound on the "escape invisibles" case. + ret.reserve(string.size() + 2); + + if (!escapeInvisibles) { + ret += '"'; + ret += string; + ret += '"'; + return ret; + } + + ret += '"'; + for (char c : string) { + switch (c) { + case '\r': + ret.append("\\r"); + break; + case '\n': + ret.append("\\n"); + break; + case '\t': + ret.append("\\t"); + break; + case '\f': + ret.append("\\f"); + break; + default: + ret.push_back(c); + break; + } + } + ret += '"'; + + return ret; + } + + std::string convertIntoString(StringRef string) { + return convertIntoString(string, getCurrentContext().getConfig()->showInvisibles()); + } + + std::string rawMemoryToString( const void *object, std::size_t size ) { + // Reverse order for little endian architectures + int i = 0, end = static_cast( size ), inc = 1; + if( Endianness::which() == Endianness::Little ) { + i = end-1; + end = inc = -1; + } + + unsigned char const *bytes = static_cast(object); + ReusableStringStream rss; + rss << "0x" << std::setfill('0') << std::hex; + for( ; i != end; i += inc ) + rss << std::setw(2) << static_cast(bytes[i]); + return rss.str(); + } +} // end Detail namespace + + + +//// ======================================================= //// +// +// Out-of-line defs for full specialization of StringMaker +// +//// ======================================================= //// + +std::string StringMaker::convert(const std::string& str) { + return Detail::convertIntoString( str ); +} + +#ifdef CATCH_CONFIG_CPP17_STRING_VIEW +std::string StringMaker::convert(std::string_view str) { + return Detail::convertIntoString( StringRef( str.data(), str.size() ) ); +} +#endif + +std::string StringMaker::convert(char const* str) { + if (str) { + return Detail::convertIntoString( str ); + } else { + return{ "{null string}" }; + } +} +std::string StringMaker::convert(char* str) { // NOLINT(readability-non-const-parameter) + if (str) { + return Detail::convertIntoString( str ); + } else { + return{ "{null string}" }; + } +} + +#ifdef CATCH_CONFIG_WCHAR +std::string StringMaker::convert(const std::wstring& wstr) { + std::string s; + s.reserve(wstr.size()); + for (auto c : wstr) { + s += (c <= 0xff) ? static_cast(c) : '?'; + } + return ::Catch::Detail::stringify(s); +} + +# ifdef CATCH_CONFIG_CPP17_STRING_VIEW +std::string StringMaker::convert(std::wstring_view str) { + return StringMaker::convert(std::wstring(str)); +} +# endif + +std::string StringMaker::convert(wchar_t const * str) { + if (str) { + return ::Catch::Detail::stringify(std::wstring{ str }); + } else { + return{ "{null string}" }; + } +} +std::string StringMaker::convert(wchar_t * str) { + if (str) { + return ::Catch::Detail::stringify(std::wstring{ str }); + } else { + return{ "{null string}" }; + } +} +#endif + +#if defined(CATCH_CONFIG_CPP17_BYTE) +#include +std::string StringMaker::convert(std::byte value) { + return ::Catch::Detail::stringify(std::to_integer(value)); +} +#endif // defined(CATCH_CONFIG_CPP17_BYTE) + +std::string StringMaker::convert(int value) { + return ::Catch::Detail::stringify(static_cast(value)); +} +std::string StringMaker::convert(long value) { + return ::Catch::Detail::stringify(static_cast(value)); +} +std::string StringMaker::convert(long long value) { + ReusableStringStream rss; + rss << value; + if (value > Detail::hexThreshold) { + rss << " (0x" << std::hex << value << ')'; + } + return rss.str(); +} + +std::string StringMaker::convert(unsigned int value) { + return ::Catch::Detail::stringify(static_cast(value)); +} +std::string StringMaker::convert(unsigned long value) { + return ::Catch::Detail::stringify(static_cast(value)); +} +std::string StringMaker::convert(unsigned long long value) { + ReusableStringStream rss; + rss << value; + if (value > Detail::hexThreshold) { + rss << " (0x" << std::hex << value << ')'; + } + return rss.str(); +} + +std::string StringMaker::convert(signed char value) { + if (value == '\r') { + return "'\\r'"; + } else if (value == '\f') { + return "'\\f'"; + } else if (value == '\n') { + return "'\\n'"; + } else if (value == '\t') { + return "'\\t'"; + } else if ('\0' <= value && value < ' ') { + return ::Catch::Detail::stringify(static_cast(value)); + } else { + char chstr[] = "' '"; + chstr[1] = value; + return chstr; + } +} +std::string StringMaker::convert(char c) { + return ::Catch::Detail::stringify(static_cast(c)); +} +std::string StringMaker::convert(unsigned char value) { + return ::Catch::Detail::stringify(static_cast(value)); +} + +int StringMaker::precision = std::numeric_limits::max_digits10; + +std::string StringMaker::convert(float value) { + return Detail::fpToString(value, precision) + 'f'; +} + +int StringMaker::precision = std::numeric_limits::max_digits10; + +std::string StringMaker::convert(double value) { + return Detail::fpToString(value, precision); +} + +} // end namespace Catch -- cgit v1.2.3