mirror of
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287 lines
7.5 KiB
C++
287 lines
7.5 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 "catch_common.h"
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#include "catch_sfinae.hpp"
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#include <sstream>
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#include <iomanip>
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#include <limits>
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#include <vector>
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#include <cstddef>
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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 CATCH_CONFIG_CPP11_TUPLE
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#include <tuple>
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#endif
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#ifdef CATCH_CONFIG_CPP11_IS_ENUM
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#include <type_traits>
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#endif
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namespace Catch {
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// Why we're here.
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template<typename T>
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std::string toString( T const& value );
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// Built in overloads
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std::string toString( std::string const& value );
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std::string toString( std::wstring const& value );
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std::string toString( const char* const value );
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std::string toString( char* const value );
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std::string toString( const wchar_t* const value );
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std::string toString( wchar_t* const value );
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std::string toString( int value );
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std::string toString( unsigned long value );
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std::string toString( unsigned int value );
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std::string toString( const double value );
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std::string toString( const float value );
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std::string toString( bool value );
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std::string toString( char value );
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std::string toString( signed char value );
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std::string toString( unsigned char value );
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#ifdef CATCH_CONFIG_CPP11_NULLPTR
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std::string toString( std::nullptr_t );
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#endif
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#ifdef __OBJC__
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std::string toString( NSString const * const& nsstring );
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std::string toString( NSString * CATCH_ARC_STRONG const& nsstring );
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std::string toString( NSObject* const& nsObject );
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#endif
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namespace Detail {
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extern std::string unprintableString;
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// SFINAE is currently disabled by default for all compilers.
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// If the non SFINAE version of IsStreamInsertable is ambiguous for you
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// and your compiler supports SFINAE, try #defining CATCH_CONFIG_SFINAE
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#ifdef CATCH_CONFIG_SFINAE
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template<typename T>
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class IsStreamInsertableHelper {
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template<int N> struct TrueIfSizeable : TrueType {};
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template<typename T2>
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static TrueIfSizeable<sizeof((*(std::ostream*)0) << *((T2 const*)0))> dummy(T2*);
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static FalseType dummy(...);
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public:
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typedef SizedIf<sizeof(dummy((T*)0))> type;
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};
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template<typename T>
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struct IsStreamInsertable : IsStreamInsertableHelper<T>::type {};
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#else
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struct BorgType {
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template<typename T> BorgType( T const& );
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};
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TrueType& testStreamable( std::ostream& );
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FalseType testStreamable( FalseType );
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FalseType operator<<( std::ostream const&, BorgType const& );
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template<typename T>
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struct IsStreamInsertable {
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static std::ostream &s;
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static T const&t;
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enum { value = sizeof( testStreamable(s << t) ) == sizeof( TrueType ) };
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};
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#endif
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#if defined(CATCH_CONFIG_CPP11_IS_ENUM)
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template<typename T,
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bool IsEnum = std::is_enum<T>::value
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>
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struct EnumStringMaker
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{
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static std::string convert( T const& ) { return unprintableString; }
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};
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template<typename T>
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struct EnumStringMaker<T,true>
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{
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static std::string convert( T const& v )
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{
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return ::Catch::toString(
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static_cast<typename std::underlying_type<T>::type>(v)
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);
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}
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};
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#endif
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template<bool C>
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struct StringMakerBase {
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#if defined(CATCH_CONFIG_CPP11_IS_ENUM)
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template<typename T>
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static std::string convert( T const& v )
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{
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return EnumStringMaker<T>::convert( v );
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}
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#else
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template<typename T>
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static std::string convert( T const& ) { return unprintableString; }
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#endif
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};
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template<>
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struct StringMakerBase<true> {
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template<typename T>
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static std::string convert( T const& _value ) {
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std::ostringstream oss;
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oss << _value;
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return oss.str();
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}
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};
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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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inline std::string rawMemoryToString( const T& object ) {
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return rawMemoryToString( &object, sizeof(object) );
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}
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} // end namespace Detail
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template<typename T>
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struct StringMaker :
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Detail::StringMakerBase<Detail::IsStreamInsertable<T>::value> {};
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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 INTERNAL_CATCH_STRINGIFY( NULL );
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else
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return Detail::rawMemoryToString( p );
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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 INTERNAL_CATCH_STRINGIFY( NULL );
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else
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return Detail::rawMemoryToString( p );
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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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}
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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 Detail::rangeToString( v.begin(), v.end() );
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// }
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//};
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template<typename T, typename Allocator>
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std::string toString( std::vector<T,Allocator> const& v ) {
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return Detail::rangeToString( v.begin(), v.end() );
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}
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#ifdef CATCH_CONFIG_CPP11_TUPLE
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// toString for tuples
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namespace TupleDetail {
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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 ElementPrinter {
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static void print( const Tuple& tuple, std::ostream& os )
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{
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os << ( N ? ", " : " " )
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<< Catch::toString(std::get<N>(tuple));
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ElementPrinter<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 ElementPrinter<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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{
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std::ostringstream os;
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os << '{';
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TupleDetail::ElementPrinter<std::tuple<Types...>>::print( tuple, os );
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os << " }";
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return os.str();
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}
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};
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#endif // CATCH_CONFIG_CPP11_TUPLE
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namespace Detail {
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template<typename T>
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std::string makeString( T const& value ) {
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return StringMaker<T>::convert( value );
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}
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} // end namespace Detail
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/// \brief converts any type to a string
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///
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/// The default template forwards on to ostringstream - except when an
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/// ostringstream overload does not exist - in which case it attempts to detect
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/// that and writes {?}.
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/// Overload (not specialise) this template for custom typs that you don't want
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/// to provide an ostream overload for.
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template<typename T>
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std::string toString( T const& value ) {
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return StringMaker<T>::convert( value );
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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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std::ostringstream oss;
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oss << "{ ";
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if( first != last ) {
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oss << Catch::toString( *first );
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for( ++first ; first != last ; ++first )
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oss << ", " << Catch::toString( *first );
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}
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oss << " }";
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return oss.str();
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}
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}
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} // end namespace Catch
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#endif // TWOBLUECUBES_CATCH_TOSTRING_H_INCLUDED
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