mirror of
https://github.com/catchorg/Catch2.git
synced 2024-11-09 15:49:53 +01:00
470 lines
14 KiB
C++
470 lines
14 KiB
C++
/*
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* Created by Phil on 8/5/2012.
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* Copyright 2012 Two Blue Cubes Ltd. All rights reserved.
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*
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* Distributed under the Boost Software License, Version 1.0. (See accompanying
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* file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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*/
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#ifndef TWOBLUECUBES_CATCH_TOSTRING_H_INCLUDED
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#define TWOBLUECUBES_CATCH_TOSTRING_H_INCLUDED
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#include <vector>
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#include <cstddef>
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#include <type_traits>
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#include <string>
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#include "catch_stream.h"
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#ifdef __OBJC__
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#include "catch_objc_arc.hpp"
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#endif
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#ifdef _MSC_VER
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#pragma warning(push)
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#pragma warning(disable:4180) // We attempt to stream a function (address) by const&, which MSVC complains about but is harmless
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#endif
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// We need a dummy global operator<< so we can bring it into Catch namespace later
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struct Catch_global_namespace_dummy;
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std::ostream& operator<<(std::ostream&, Catch_global_namespace_dummy);
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namespace Catch {
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// Bring in operator<< from global namespace into Catch namespace
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using ::operator<<;
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namespace Detail {
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extern const std::string unprintableString;
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std::string rawMemoryToString( const void *object, std::size_t size );
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template<typename T>
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std::string rawMemoryToString( const T& object ) {
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return rawMemoryToString( &object, sizeof(object) );
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}
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template<typename T>
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class IsStreamInsertable {
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template<typename SS, typename TT>
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static auto test(int)
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-> decltype(std::declval<SS&>() << std::declval<TT>(), std::true_type());
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template<typename, typename>
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static auto test(...)->std::false_type;
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public:
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static const bool value = decltype(test<std::ostream, const T&>(0))::value;
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};
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} // namespace Detail
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// If we decide for C++14, change these to enable_if_ts
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template <typename T>
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struct StringMaker {
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template <typename Fake = T>
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static
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typename std::enable_if<::Catch::Detail::IsStreamInsertable<Fake>::value, std::string>::type
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convert(const Fake& t) {
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ReusableStringStream rss;
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rss << t;
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return rss.str();
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}
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template <typename Fake = T>
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static
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typename std::enable_if<!::Catch::Detail::IsStreamInsertable<Fake>::value, std::string>::type
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convert(const Fake&) {
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return Detail::unprintableString;
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}
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};
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namespace Detail {
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// This function dispatches all stringification requests inside of Catch.
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// Should be preferably called fully qualified, like ::Catch::Detail::stringify
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template <typename T>
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std::string stringify(const T& e) {
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return ::Catch::StringMaker<typename std::remove_cv<typename std::remove_reference<T>::type>::type>::convert(e);
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}
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} // namespace Detail
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// Some predefined specializations
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template<>
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struct StringMaker<std::string> {
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static std::string convert(const std::string& str);
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};
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template<>
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struct StringMaker<std::wstring> {
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static std::string convert(const std::wstring& wstr);
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};
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template<>
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struct StringMaker<char const *> {
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static std::string convert(char const * str);
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};
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template<>
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struct StringMaker<char *> {
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static std::string convert(char * str);
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};
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template<>
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struct StringMaker<wchar_t const *> {
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static std::string convert(wchar_t const * str);
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};
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template<>
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struct StringMaker<wchar_t *> {
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static std::string convert(wchar_t * str);
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};
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template<int SZ>
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struct StringMaker<char[SZ]> {
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static std::string convert(const char* str) {
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return ::Catch::Detail::stringify(std::string{ str });
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}
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};
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template<int SZ>
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struct StringMaker<signed char[SZ]> {
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static std::string convert(const char* str) {
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return ::Catch::Detail::stringify(std::string{ str });
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}
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};
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template<int SZ>
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struct StringMaker<unsigned char[SZ]> {
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static std::string convert(const char* str) {
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return ::Catch::Detail::stringify(std::string{ str });
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}
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};
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template<>
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struct StringMaker<int> {
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static std::string convert(int value);
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};
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template<>
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struct StringMaker<long> {
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static std::string convert(long value);
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};
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template<>
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struct StringMaker<long long> {
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static std::string convert(long long value);
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};
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template<>
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struct StringMaker<unsigned int> {
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static std::string convert(unsigned int value);
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};
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template<>
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struct StringMaker<unsigned long> {
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static std::string convert(unsigned long value);
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};
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template<>
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struct StringMaker<unsigned long long> {
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static std::string convert(unsigned long long value);
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};
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template<>
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struct StringMaker<bool> {
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static std::string convert(bool b);
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};
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template<>
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struct StringMaker<char> {
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static std::string convert(char c);
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};
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template<>
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struct StringMaker<signed char> {
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static std::string convert(signed char c);
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};
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template<>
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struct StringMaker<unsigned char> {
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static std::string convert(unsigned char c);
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};
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template<>
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struct StringMaker<std::nullptr_t> {
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static std::string convert(std::nullptr_t);
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};
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template<>
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struct StringMaker<float> {
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static std::string convert(float value);
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};
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template<>
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struct StringMaker<double> {
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static std::string convert(double value);
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};
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template <typename T>
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struct StringMaker<T*> {
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template <typename U>
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static std::string convert(U* p) {
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if (p) {
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return ::Catch::Detail::rawMemoryToString(p);
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} else {
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return "nullptr";
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}
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}
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};
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template <typename R, typename C>
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struct StringMaker<R C::*> {
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static std::string convert(R C::* p) {
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if (p) {
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return ::Catch::Detail::rawMemoryToString(p);
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} else {
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return "nullptr";
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}
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}
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};
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namespace Detail {
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template<typename InputIterator>
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std::string rangeToString(InputIterator first, InputIterator last) {
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ReusableStringStream rss;
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rss << "{ ";
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if (first != last) {
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rss << ::Catch::Detail::stringify(*first);
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for (++first; first != last; ++first)
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rss << ", " << ::Catch::Detail::stringify(*first);
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}
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rss << " }";
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return rss.str();
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}
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}
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template<typename T, typename Allocator>
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struct StringMaker<std::vector<T, Allocator> > {
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static std::string convert( std::vector<T,Allocator> const& v ) {
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return ::Catch::Detail::rangeToString( v.begin(), v.end() );
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}
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};
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template<typename T>
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struct EnumStringMaker {
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static std::string convert(const T& t) {
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return ::Catch::Detail::stringify(static_cast<typename std::underlying_type<T>::type>(t));
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}
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};
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#ifdef __OBJC__
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template<>
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struct StringMaker<NSString*> {
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static std::string convert(NSString * nsstring) {
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if (!nsstring)
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return "nil";
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return std::string("@") + [nsstring UTF8String];
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}
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};
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template<>
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struct StringMaker<NSObject*> {
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static std::string convert(NSObject* nsObject) {
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return ::Catch::Detail::stringify([nsObject description]);
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}
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};
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namespace Detail {
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inline std::string stringify( NSString* nsstring ) {
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return StringMaker<NSString*>::convert( nsstring );
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}
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} // namespace Detail
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#endif // __OBJC__
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} // namespace Catch
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//////////////////////////////////////////////////////
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// Separate std-lib types stringification, so it can be selectively enabled
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// This means that we do not bring in
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#if defined(CATCH_CONFIG_ENABLE_ALL_STRINGMAKERS)
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# define CATCH_CONFIG_ENABLE_PAIR_STRINGMAKER
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# define CATCH_CONFIG_ENABLE_TUPLE_STRINGMAKER
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# define CATCH_CONFIG_ENABLE_CHRONO_STRINGMAKER
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#endif
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// Separate std::pair specialization
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#if defined(CATCH_CONFIG_ENABLE_PAIR_STRINGMAKER)
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#include <utility>
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namespace Catch {
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template<typename T1, typename T2>
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struct StringMaker<std::pair<T1, T2> > {
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static std::string convert(const std::pair<T1, T2>& pair) {
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ReusableStringStream rss;
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rss << "{ "
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<< ::Catch::Detail::stringify(pair.first)
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<< ", "
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<< ::Catch::Detail::stringify(pair.second)
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<< " }";
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return rss.str();
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}
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};
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}
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#endif // CATCH_CONFIG_ENABLE_PAIR_STRINGMAKER
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// Separate std::tuple specialization
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#if defined(CATCH_CONFIG_ENABLE_TUPLE_STRINGMAKER)
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#include <tuple>
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namespace Catch {
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namespace Detail {
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template<
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typename Tuple,
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std::size_t N = 0,
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bool = (N < std::tuple_size<Tuple>::value)
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>
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struct TupleElementPrinter {
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static void print(const Tuple& tuple, std::ostream& os) {
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os << (N ? ", " : " ")
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<< ::Catch::Detail::stringify(std::get<N>(tuple));
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TupleElementPrinter<Tuple, N + 1>::print(tuple, os);
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}
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};
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template<
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typename Tuple,
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std::size_t N
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>
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struct TupleElementPrinter<Tuple, N, false> {
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static void print(const Tuple&, std::ostream&) {}
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};
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}
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template<typename ...Types>
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struct StringMaker<std::tuple<Types...>> {
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static std::string convert(const std::tuple<Types...>& tuple) {
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ReusableStringStream rss;
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rss << '{';
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Detail::TupleElementPrinter<std::tuple<Types...>>::print(tuple, rss.get());
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rss << " }";
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return rss.str();
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}
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};
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}
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#endif // CATCH_CONFIG_ENABLE_TUPLE_STRINGMAKER
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// Separate std::chrono::duration specialization
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#if defined(CATCH_CONFIG_ENABLE_CHRONO_STRINGMAKER)
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#include <ctime>
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#include <ratio>
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#include <chrono>
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template <class Ratio>
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struct ratio_string {
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static std::string symbol();
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};
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template <class Ratio>
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std::string ratio_string<Ratio>::symbol() {
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Catch::ReusableStringStream rss;
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rss << '[' << Ratio::num << '/'
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<< Ratio::den << ']';
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return rss.str();
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}
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template <>
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struct ratio_string<std::atto> {
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static std::string symbol() { return "a"; }
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};
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template <>
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struct ratio_string<std::femto> {
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static std::string symbol() { return "f"; }
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};
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template <>
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struct ratio_string<std::pico> {
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static std::string symbol() { return "p"; }
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};
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template <>
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struct ratio_string<std::nano> {
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static std::string symbol() { return "n"; }
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};
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template <>
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struct ratio_string<std::micro> {
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static std::string symbol() { return "u"; }
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};
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template <>
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struct ratio_string<std::milli> {
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static std::string symbol() { return "m"; }
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};
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namespace Catch {
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////////////
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// std::chrono::duration specializations
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template<typename Value, typename Ratio>
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struct StringMaker<std::chrono::duration<Value, Ratio>> {
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static std::string convert(std::chrono::duration<Value, Ratio> const& duration) {
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ReusableStringStream rss;
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rss << duration.count() << ' ' << ratio_string<Ratio>::symbol() << 's';
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return rss.str();
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}
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};
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template<typename Value>
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struct StringMaker<std::chrono::duration<Value, std::ratio<1>>> {
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static std::string convert(std::chrono::duration<Value, std::ratio<1>> const& duration) {
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ReusableStringStream rss;
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rss << duration.count() << " s";
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return rss.str();
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}
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};
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template<typename Value>
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struct StringMaker<std::chrono::duration<Value, std::ratio<60>>> {
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static std::string convert(std::chrono::duration<Value, std::ratio<60>> const& duration) {
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ReusableStringStream rss;
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rss << duration.count() << " m";
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return rss.str();
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}
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};
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template<typename Value>
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struct StringMaker<std::chrono::duration<Value, std::ratio<3600>>> {
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static std::string convert(std::chrono::duration<Value, std::ratio<3600>> const& duration) {
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ReusableStringStream rss;
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rss << duration.count() << " h";
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return rss.str();
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}
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};
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////////////
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// std::chrono::time_point specialization
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// Generic time_point cannot be specialized, only std::chrono::time_point<system_clock>
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template<typename Clock, typename Duration>
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struct StringMaker<std::chrono::time_point<Clock, Duration>> {
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static std::string convert(std::chrono::time_point<Clock, Duration> const& time_point) {
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return ::Catch::Detail::stringify(time_point.time_since_epoch()) + " since epoch";
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}
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};
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// std::chrono::time_point<system_clock> specialization
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template<typename Duration>
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struct StringMaker<std::chrono::time_point<std::chrono::system_clock, Duration>> {
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static std::string convert(std::chrono::time_point<std::chrono::system_clock, Duration> const& time_point) {
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auto converted = std::chrono::system_clock::to_time_t(time_point);
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#ifdef _MSC_VER
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std::tm timeInfo = {};
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gmtime_s(&timeInfo, &converted);
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#else
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std::tm* timeInfo = std::gmtime(&converted);
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#endif
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auto const timeStampSize = sizeof("2017-01-16T17:06:45Z");
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char timeStamp[timeStampSize];
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const char * const fmt = "%Y-%m-%dT%H:%M:%SZ";
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#ifdef _MSC_VER
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std::strftime(timeStamp, timeStampSize, fmt, &timeInfo);
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#else
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std::strftime(timeStamp, timeStampSize, fmt, timeInfo);
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#endif
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return std::string(timeStamp);
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}
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};
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}
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#endif // CATCH_CONFIG_ENABLE_CHRONO_STRINGMAKER
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#ifdef _MSC_VER
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#pragma warning(pop)
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#endif
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#endif // TWOBLUECUBES_CATCH_TOSTRING_H_INCLUDED
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