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/*
* Created by Phil on 8/5/2012.
* Copyright 2012 Two Blue Cubes Ltd. All rights reserved.
*
* Distributed under the Boost Software License, Version 1.0. (See accompanying
* file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
*/
#ifndef TWOBLUECUBES_CATCH_TOSTRING_H_INCLUDED
#define TWOBLUECUBES_CATCH_TOSTRING_H_INCLUDED
#include "catch_common.h"
#include <sstream>
#include <iomanip>
#include <limits>
#include <vector>
#include <cstddef>
#ifdef __OBJC__
#include "catch_objc_arc.hpp"
#endif
#ifdef CATCH_CONFIG_CPP11_TUPLE
#include <tuple>
#endif
#ifdef CATCH_CONFIG_CPP11_IS_ENUM
#include <type_traits>
#endif
namespace Catch {
// Why we're here.
template<typename T>
std::string toString( T const& value );
// Built in overloads
std::string toString( std::string const& value );
std::string toString( std::wstring const& value );
std::string toString( const char* const value );
std::string toString( char* const value );
std::string toString( const wchar_t* const value );
std::string toString( wchar_t* const value );
std::string toString( int value );
std::string toString( unsigned long value );
std::string toString( unsigned int value );
std::string toString( const double value );
std::string toString( const float value );
std::string toString( bool value );
std::string toString( char value );
std::string toString( signed char value );
std::string toString( unsigned char value );
#ifdef CATCH_CONFIG_CPP11_LONG_LONG
std::string toString( long long value );
std::string toString( unsigned long long value );
#endif
#ifdef CATCH_CONFIG_CPP11_NULLPTR
std::string toString( std::nullptr_t );
#endif
#ifdef __OBJC__
std::string toString( NSString const * const& nsstring );
std::string toString( NSString * CATCH_ARC_STRONG const& nsstring );
std::string toString( NSObject* const& nsObject );
#endif
namespace Detail {
extern const std::string unprintableString;
struct BorgType {
template<typename T> BorgType( T const& );
};
struct TrueType { char sizer[1]; };
struct FalseType { char sizer[2]; };
TrueType& testStreamable( std::ostream& );
FalseType testStreamable( FalseType );
FalseType operator<<( std::ostream const&, BorgType const& );
template<typename T>
struct IsStreamInsertable {
static std::ostream &s;
static T const&t;
enum { value = sizeof( testStreamable(s << t) ) == sizeof( TrueType ) };
};
#if defined(CATCH_CONFIG_CPP11_IS_ENUM)
template<typename T,
bool IsEnum = std::is_enum<T>::value
>
struct EnumStringMaker
{
static std::string convert( T const& ) { return unprintableString; }
};
template<typename T>
struct EnumStringMaker<T,true>
{
static std::string convert( T const& v )
{
return ::Catch::toString(
static_cast<typename std::underlying_type<T>::type>(v)
);
}
};
#endif
template<bool C>
struct StringMakerBase {
#if defined(CATCH_CONFIG_CPP11_IS_ENUM)
template<typename T>
static std::string convert( T const& v )
{
return EnumStringMaker<T>::convert( v );
}
#else
template<typename T>
static std::string convert( T const& ) { return unprintableString; }
#endif
};
template<>
struct StringMakerBase<true> {
template<typename T>
static std::string convert( T const& _value ) {
std::ostringstream oss;
oss << _value;
return oss.str();
}
};
std::string rawMemoryToString( const void *object, std::size_t size );
template<typename T>
inline std::string rawMemoryToString( const T& object ) {
return rawMemoryToString( &object, sizeof(object) );
}
} // end namespace Detail
template<typename T>
struct StringMaker :
Detail::StringMakerBase<Detail::IsStreamInsertable<T>::value> {};
template<typename T>
struct StringMaker<T*> {
template<typename U>
static std::string convert( U* p ) {
if( !p )
return "NULL";
else
return Detail::rawMemoryToString( p );
}
};
template<typename R, typename C>
struct StringMaker<R C::*> {
static std::string convert( R C::* p ) {
if( !p )
return "NULL";
else
return Detail::rawMemoryToString( p );
}
};
namespace Detail {
template<typename InputIterator>
std::string rangeToString( InputIterator first, InputIterator last );
}
//template<typename T, typename Allocator>
//struct StringMaker<std::vector<T, Allocator> > {
// static std::string convert( std::vector<T,Allocator> const& v ) {
// return Detail::rangeToString( v.begin(), v.end() );
// }
//};
template<typename T, typename Allocator>
std::string toString( std::vector<T,Allocator> const& v ) {
return Detail::rangeToString( v.begin(), v.end() );
}
#ifdef CATCH_CONFIG_CPP11_TUPLE
// toString for tuples
namespace TupleDetail {
template<
typename Tuple,
std::size_t N = 0,
bool = (N < std::tuple_size<Tuple>::value)
>
struct ElementPrinter {
static void print( const Tuple& tuple, std::ostream& os )
{
os << ( N ? ", " : " " )
<< Catch::toString(std::get<N>(tuple));
ElementPrinter<Tuple,N+1>::print(tuple,os);
}
};
template<
typename Tuple,
std::size_t N
>
struct ElementPrinter<Tuple,N,false> {
static void print( const Tuple&, std::ostream& ) {}
};
}
template<typename ...Types>
struct StringMaker<std::tuple<Types...>> {
static std::string convert( const std::tuple<Types...>& tuple )
{
std::ostringstream os;
os << '{';
TupleDetail::ElementPrinter<std::tuple<Types...>>::print( tuple, os );
os << " }";
return os.str();
}
};
#endif // CATCH_CONFIG_CPP11_TUPLE
namespace Detail {
template<typename T>
std::string makeString( T const& value ) {
return StringMaker<T>::convert( value );
}
} // end namespace Detail
/// \brief converts any type to a string
///
/// The default template forwards on to ostringstream - except when an
/// ostringstream overload does not exist - in which case it attempts to detect
/// that and writes {?}.
/// Overload (not specialise) this template for custom typs that you don't want
/// to provide an ostream overload for.
template<typename T>
std::string toString( T const& value ) {
return StringMaker<T>::convert( value );
}
namespace Detail {
template<typename InputIterator>
std::string rangeToString( InputIterator first, InputIterator last ) {
std::ostringstream oss;
oss << "{ ";
if( first != last ) {
oss << Catch::toString( *first );
for( ++first ; first != last ; ++first )
oss << ", " << Catch::toString( *first );
}
oss << " }";
return oss.str();
}
}
} // end namespace Catch
#endif // TWOBLUECUBES_CATCH_TOSTRING_H_INCLUDED
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