mirror of
https://github.com/catchorg/Catch2.git
synced 2024-11-25 23:06:10 +01:00
786 lines
20 KiB
C++
786 lines
20 KiB
C++
/*
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* catch_capture.hpp
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* Catch
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*
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* Created by Phil on 18/10/2010.
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* Copyright 2010 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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*/
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#ifndef TWOBLUECUBES_CATCH_CAPTURE_HPP_INCLUDED
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#define TWOBLUECUBES_CATCH_CAPTURE_HPP_INCLUDED
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#include "catch_resultinfo.hpp"
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#include "catch_result_type.h"
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#include "catch_interfaces_capture.h"
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#include "catch_debugger.hpp"
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#include "catch_evaluate.hpp"
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#include <sstream>
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#include <cmath>
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namespace Catch
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{
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namespace Detail
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{
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// The following code, contributed by Sam Partington, allows us to choose an implementation
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// of toString() depending on whether a << overload is available
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struct NonStreamable
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{
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// allow construction from anything...
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template<typename Anything>
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NonStreamable(Anything)
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{}
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};
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// a local operator<< which may be called if there isn't a better one elsewhere...
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inline NonStreamable operator << ( std::ostream&, const NonStreamable& ns )
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{
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return ns;
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}
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template<typename T>
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struct IsStreamable
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{
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static NoType Deduce( const NonStreamable& );
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static YesType Deduce( std::ostream& );
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enum
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{
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value = sizeof( Deduce( Synth<std::ostream&>() << Synth<const T&>() ) )
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== sizeof( YesType )
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};
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};
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// << is available, so use it with ostringstream to make the string
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template<typename T, bool streamable>
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struct StringMaker
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{
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///////////////////////////////////////////////////////////////////////
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static std::string apply
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(
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const T& value
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)
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{
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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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// << not available - use a default string
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template<typename T>
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struct StringMaker<T, false>
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{
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///////////////////////////////////////////////////////////////////////
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static std::string apply
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(
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const T&
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)
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{
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return "{?}";
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}
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};
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}// end namespace Detail
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///////////////////////////////////////////////////////////////////////////////
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template<typename T>
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std::string toString
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(
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const T& value
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)
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{
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return Detail::StringMaker<T, Detail::IsStreamable<T>::value>::apply( value );
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}
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// Shortcut overloads
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///////////////////////////////////////////////////////////////////////////////
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inline std::string toString
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(
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const std::string& value
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)
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{
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return "\"" + value + "\"";
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}
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///////////////////////////////////////////////////////////////////////////////
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inline std::string toString
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(
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const std::wstring& value
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)
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{
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std::ostringstream oss;
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oss << "\"";
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for(size_t i = 0; i < value.size(); ++i )
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oss << static_cast<char>( value[i] <= 0xff ? value[i] : '?');
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oss << "\"";
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return oss.str();
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}
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///////////////////////////////////////////////////////////////////////////////
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inline std::string toString
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(
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const char* const value
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)
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{
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return value ? Catch::toString( std::string( value ) ) : std::string( "{null string}" );
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}
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///////////////////////////////////////////////////////////////////////////////
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inline std::string toString
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(
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char* const value
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)
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{
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return Catch::toString( static_cast<const char* const>( value ) );
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}
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///////////////////////////////////////////////////////////////////////////////
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inline std::string toString
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(
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int value
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)
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{
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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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inline std::string toString
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(
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unsigned int value
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)
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{
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std::ostringstream oss;
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if( value > 8192 )
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oss << "0x" << std::hex << value;
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else
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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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inline std::string toString
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(
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unsigned long value
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)
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{
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std::ostringstream oss;
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if( value > 8192 )
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oss << "0x" << std::hex << value;
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else
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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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inline std::string toString
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(
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const double value
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)
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{
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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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inline std::string toString
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(
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bool value
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)
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{
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return value ? "true" : "false";
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}
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///////////////////////////////////////////////////////////////////////////////
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inline std::string toString
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(
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void* p
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)
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{
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if( !p )
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return INTERNAL_CATCH_STRINGIFY( NULL );
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std::ostringstream oss;
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oss << p;
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return oss.str();
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}
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///////////////////////////////////////////////////////////////////////////////
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template<typename T>
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inline std::string toString
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(
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T* p
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)
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{
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return Catch::toString( static_cast<void*>( p ) );
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}
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///////////////////////////////////////////////////////////////////////////////
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template<typename T>
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inline std::string toString
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(
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const T* p
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)
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{
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return Catch::toString( static_cast<void*>( const_cast<T*>( p ) ) );
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}
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struct TestFailureException
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{
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};
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struct DummyExceptionType_DontUse
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{
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};
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struct STATIC_ASSERT_Expression_Too_Complex_Please_Rewrite_As_Binary_Comparison;
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class MutableResultInfo : public ResultInfo
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{
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public:
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///////////////////////////////////////////////////////////////////////////
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MutableResultInfo
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()
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{}
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///////////////////////////////////////////////////////////////////////////
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MutableResultInfo
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(
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const char* expr,
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bool isNot,
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const char* filename,
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std::size_t line,
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const char* macroName,
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const char* message = ""
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)
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: ResultInfo( expr, ResultWas::Unknown, isNot, filename, line, macroName, message )
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{
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}
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///////////////////////////////////////////////////////////////////////////
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void setResultType
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(
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ResultWas::OfType result
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)
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{
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// Flip bool results if isNot is set
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if( m_isNot && result == ResultWas::Ok )
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m_result = ResultWas::ExpressionFailed;
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else if( m_isNot && result == ResultWas::ExpressionFailed )
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m_result = ResultWas::Ok;
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else
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m_result = result;
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}
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///////////////////////////////////////////////////////////////////////////
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void setMessage
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(
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const std::string& message
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)
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{
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m_message = message;
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}
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///////////////////////////////////////////////////////////////////////////
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void setFileAndLine
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(
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const std::string& filename,
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std::size_t line
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)
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{
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m_filename = filename;
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m_line = line;
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}
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///////////////////////////////////////////////////////////////////////////
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template<typename RhsT>
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STATIC_ASSERT_Expression_Too_Complex_Please_Rewrite_As_Binary_Comparison& operator ||
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(
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const RhsT&
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);
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///////////////////////////////////////////////////////////////////////////
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template<typename RhsT>
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STATIC_ASSERT_Expression_Too_Complex_Please_Rewrite_As_Binary_Comparison& operator &&
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(
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const RhsT&
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);
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private:
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friend class ResultBuilder;
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template<typename T> friend class Expression;
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template<typename T> friend class PtrExpression;
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///////////////////////////////////////////////////////////////////////////
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MutableResultInfo& captureBoolExpression
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(
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bool result
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)
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{
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m_lhs = Catch::toString( result );
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m_op = m_isNot ? "!" : "";
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setResultType( result ? ResultWas::Ok : ResultWas::ExpressionFailed );
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return *this;
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}
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///////////////////////////////////////////////////////////////////////////
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template<Internal::Operator Op, typename T1, typename T2>
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MutableResultInfo& captureExpression
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(
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const T1& lhs,
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const T2& rhs
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)
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{
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setResultType( Internal::compare<Op>( lhs, rhs ) ? ResultWas::Ok : ResultWas::ExpressionFailed );
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m_lhs = Catch::toString( lhs );
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m_rhs = Catch::toString( rhs );
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m_op = Internal::OperatorTraits<Op>::getName();
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return *this;
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}
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};
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template<typename T>
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class Expression
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{
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void operator = ( const Expression& );
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public:
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///////////////////////////////////////////////////////////////////////////
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Expression
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(
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MutableResultInfo& result,
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const T& lhs
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)
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: m_result( result ),
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m_lhs( lhs )
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{
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}
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///////////////////////////////////////////////////////////////////////////
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template<typename RhsT>
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MutableResultInfo& operator ==
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(
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const RhsT& rhs
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)
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{
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return m_result.captureExpression<Internal::IsEqualTo>( m_lhs, rhs );
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}
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///////////////////////////////////////////////////////////////////////////
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template<typename RhsT>
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MutableResultInfo& operator !=
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(
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const RhsT& rhs
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)
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{
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return m_result.captureExpression<Internal::IsNotEqualTo>( m_lhs, rhs );
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}
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///////////////////////////////////////////////////////////////////////////
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template<typename RhsT>
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MutableResultInfo& operator <
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(
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const RhsT& rhs
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)
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{
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return m_result.captureExpression<Internal::IsLessThan>( m_lhs, rhs );
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}
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///////////////////////////////////////////////////////////////////////////
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template<typename RhsT>
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MutableResultInfo& operator >
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(
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const RhsT& rhs
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)
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{
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return m_result.captureExpression<Internal::IsGreaterThan>( m_lhs, rhs );
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}
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///////////////////////////////////////////////////////////////////////////
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template<typename RhsT>
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MutableResultInfo& operator <=
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(
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const RhsT& rhs
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)
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{
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return m_result.captureExpression<Internal::IsLessThanOrEqualTo>( m_lhs, rhs );
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}
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///////////////////////////////////////////////////////////////////////////
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template<typename RhsT>
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MutableResultInfo& operator >=
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(
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const RhsT& rhs
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)
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{
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return m_result.captureExpression<Internal::IsGreaterThanOrEqualTo>( m_lhs, rhs );
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}
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///////////////////////////////////////////////////////////////////////////
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operator MutableResultInfo&
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()
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{
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return m_result.captureBoolExpression( m_lhs );
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}
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///////////////////////////////////////////////////////////////////////////
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template<typename RhsT>
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STATIC_ASSERT_Expression_Too_Complex_Please_Rewrite_As_Binary_Comparison& operator +
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(
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const RhsT&
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);
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///////////////////////////////////////////////////////////////////////////
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template<typename RhsT>
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STATIC_ASSERT_Expression_Too_Complex_Please_Rewrite_As_Binary_Comparison& operator -
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(
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const RhsT&
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);
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private:
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MutableResultInfo& m_result;
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const T& m_lhs;
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};
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template<typename LhsT>
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class PtrExpression
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{
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public:
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///////////////////////////////////////////////////////////////////////////
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PtrExpression
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(
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MutableResultInfo& result,
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const LhsT* lhs
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)
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: m_result( &result ),
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m_lhs( lhs )
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{}
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///////////////////////////////////////////////////////////////////////////
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template<typename RhsT>
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MutableResultInfo& operator ==
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(
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const RhsT* rhs
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)
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{
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return m_result->captureExpression<Internal::IsEqualTo>( m_lhs, rhs );
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}
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///////////////////////////////////////////////////////////////////////////
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// This catches NULL
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MutableResultInfo& operator ==
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(
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LhsT* rhs
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)
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{
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return m_result->captureExpression<Internal::IsEqualTo>( m_lhs, rhs );
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}
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///////////////////////////////////////////////////////////////////////////
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template<typename RhsT>
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MutableResultInfo& operator !=
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(
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const RhsT* rhs
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)
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{
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return m_result->captureExpression<Internal::IsNotEqualTo>( m_lhs, rhs );
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}
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///////////////////////////////////////////////////////////////////////////
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// This catches NULL
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MutableResultInfo& operator !=
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(
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LhsT* rhs
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)
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{
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return m_result->captureExpression<Internal::IsNotEqualTo>( m_lhs, rhs );
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}
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///////////////////////////////////////////////////////////////////////////
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operator MutableResultInfo&
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()
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{
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return m_result->captureBoolExpression( m_lhs );
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}
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|
|
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private:
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MutableResultInfo* m_result;
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const LhsT* m_lhs;
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};
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class ResultBuilder
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{
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public:
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///////////////////////////////////////////////////////////////////////////
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ResultBuilder
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(
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const char* filename,
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std::size_t line,
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const char* macroName,
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const char* expr = "",
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bool isNot = false
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)
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: m_result( expr, isNot, filename, line, macroName )
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{}
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///////////////////////////////////////////////////////////////////////////
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template<typename T>
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Expression<T> operator->*
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(
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const T & operand
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)
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{
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Expression<T> expr( m_result, operand );
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return expr;
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}
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///////////////////////////////////////////////////////////////////////////
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template<typename T>
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PtrExpression<T> operator->*
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(
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const T* operand
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)
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{
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PtrExpression<T> expr( m_result, operand );
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return expr;
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}
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///////////////////////////////////////////////////////////////////////////
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template<typename T>
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PtrExpression<T> operator->*
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(
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T* operand
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)
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{
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PtrExpression<T> expr( m_result, operand );
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|
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return expr;
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}
|
|
|
|
///////////////////////////////////////////////////////////////////////////
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|
template<typename T>
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ResultBuilder& operator <<
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(
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const T & value
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)
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{
|
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m_messageStream << value;
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return *this;
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}
|
|
|
|
///////////////////////////////////////////////////////////////////////////
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|
ResultBuilder& setResultType
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(
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ResultWas::OfType resultType
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|
)
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{
|
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m_result.setResultType( resultType );
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return *this;
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}
|
|
|
|
///////////////////////////////////////////////////////////////////////////
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operator MutableResultInfo&
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()
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|
{
|
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m_result.setMessage( m_messageStream.str() );
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return m_result;
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|
}
|
|
|
|
private:
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MutableResultInfo m_result;
|
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std::ostringstream m_messageStream;
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|
|
|
};
|
|
|
|
class ScopedInfo
|
|
{
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|
public:
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|
///////////////////////////////////////////////////////////////////////////
|
|
ScopedInfo
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|
()
|
|
{
|
|
Hub::getResultCapture().pushScopedInfo( this );
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|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
~ScopedInfo
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|
()
|
|
{
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Hub::getResultCapture().popScopedInfo( this );
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|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////
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|
ScopedInfo& operator <<
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(
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const char* str
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)
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|
{
|
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m_oss << str;
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return *this;
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}
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
std::string getInfo
|
|
()
|
|
const
|
|
{
|
|
return m_oss.str();
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|
}
|
|
|
|
private:
|
|
std::ostringstream m_oss;
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};
|
|
|
|
|
|
// !TBD Need to clean this all up
|
|
#define CATCH_absTol 1e-10
|
|
#define CATCH_relTol 1e-10
|
|
|
|
inline double catch_max( double x, double y )
|
|
{
|
|
return x > y ? x : y;
|
|
}
|
|
namespace Detail
|
|
{
|
|
class Approx
|
|
{
|
|
public:
|
|
///////////////////////////////////////////////////////////////////////////
|
|
// !TBD more generic
|
|
explicit Approx
|
|
(
|
|
double d
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|
)
|
|
: m_d( d )
|
|
{
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
template<typename T>
|
|
friend bool operator ==
|
|
(
|
|
const T& lhs,
|
|
const Approx& rhs
|
|
)
|
|
{
|
|
// !TBD Use proper tolerance
|
|
// From: http://realtimecollisiondetection.net/blog/?p=89
|
|
// see also: http://www.cygnus-software.com/papers/comparingfloats/comparingfloats.htm
|
|
return fabs( lhs - rhs.m_d ) <= catch_max( CATCH_absTol, CATCH_relTol * catch_max( fabs(lhs), fabs(rhs.m_d) ) );
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////
|
|
template<typename T>
|
|
friend bool operator !=
|
|
(
|
|
const T& lhs,
|
|
const Approx& rhs
|
|
)
|
|
{
|
|
return ! operator==( lhs, rhs );
|
|
}
|
|
|
|
double m_d;
|
|
};
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
template<>
|
|
inline std::string toString<Detail::Approx>
|
|
(
|
|
const Detail::Approx& value
|
|
)
|
|
{
|
|
std::ostringstream oss;
|
|
oss << "Approx( " << value.m_d << ")";
|
|
return oss.str();
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
// This is just here to avoid compiler warnings with macro constants
|
|
inline bool isTrue
|
|
(
|
|
bool value
|
|
)
|
|
{
|
|
return value;
|
|
}
|
|
|
|
} // end namespace Catch
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
#define INTERNAL_CATCH_ACCEPT_EXPR( expr, stopOnFailure ) \
|
|
if( Catch::ResultAction::Value action = Catch::Hub::getResultCapture().acceptExpression( expr ) ) \
|
|
{ \
|
|
if( action == Catch::ResultAction::DebugFailed ) BreakIntoDebugger(); \
|
|
if( Catch::isTrue( stopOnFailure ) ) throw Catch::TestFailureException(); \
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
#define INTERNAL_CATCH_TEST( expr, isNot, stopOnFailure, macroName ) \
|
|
INTERNAL_CATCH_ACCEPT_EXPR( ( Catch::ResultBuilder( __FILE__, __LINE__, macroName, #expr, isNot )->*expr ), stopOnFailure ); \
|
|
if( Catch::isTrue( false ) ){ bool dummyResult = ( expr ); Catch::isTrue( dummyResult ); }
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
#define INTERNAL_CATCH_NO_THROW( expr, stopOnFailure, macroName ) \
|
|
try \
|
|
{ \
|
|
expr; \
|
|
INTERNAL_CATCH_ACCEPT_EXPR( Catch::ResultBuilder( __FILE__, __LINE__, macroName, #expr ).setResultType( Catch::ResultWas::Ok ), stopOnFailure ); \
|
|
} \
|
|
catch( std::exception& ex ) \
|
|
{ \
|
|
INTERNAL_CATCH_ACCEPT_EXPR( ( Catch::ResultBuilder( __FILE__, __LINE__, macroName, #expr ) << ex.what() ).setResultType( Catch::ResultWas::ThrewException ), stopOnFailure ); \
|
|
} \
|
|
catch( ... ) \
|
|
{ \
|
|
INTERNAL_CATCH_ACCEPT_EXPR( ( Catch::ResultBuilder( __FILE__, __LINE__, macroName, #expr ) << Catch::Hub::getExceptionTranslatorRegistry().translateActiveException() ).setResultType( Catch::ResultWas::ThrewException ), stopOnFailure ); \
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
#define INTERNAL_CATCH_THROWS( expr, exceptionType, stopOnFailure, macroName ) \
|
|
try \
|
|
{ \
|
|
expr; \
|
|
INTERNAL_CATCH_ACCEPT_EXPR( Catch::ResultBuilder( __FILE__, __LINE__, macroName, #expr ).setResultType( Catch::ResultWas::DidntThrowException ), stopOnFailure ); \
|
|
} \
|
|
catch( Catch::TestFailureException& ) \
|
|
{ \
|
|
throw; \
|
|
} \
|
|
catch( exceptionType ) \
|
|
{ \
|
|
INTERNAL_CATCH_ACCEPT_EXPR( Catch::ResultBuilder( __FILE__, __LINE__, macroName, #expr ).setResultType( Catch::ResultWas::Ok ), stopOnFailure ); \
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
#define INTERNAL_CATCH_THROWS_AS( expr, exceptionType, stopOnFailure, macroName ) \
|
|
INTERNAL_CATCH_THROWS( expr, exceptionType, stopOnFailure, macroName ) \
|
|
catch( ... ) \
|
|
{ \
|
|
INTERNAL_CATCH_ACCEPT_EXPR( ( Catch::ResultBuilder( __FILE__, __LINE__, macroName, #expr ) << Catch::Hub::getExceptionTranslatorRegistry().translateActiveException() ).setResultType( Catch::ResultWas::ThrewException ), stopOnFailure ); \
|
|
}
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
#define INTERNAL_CATCH_MSG( reason, resultType, stopOnFailure, macroName ) \
|
|
Catch::Hub::getResultCapture().acceptExpression( ( Catch::ResultBuilder( __FILE__, __LINE__, macroName ) << reason ).setResultType( resultType ) );
|
|
|
|
///////////////////////////////////////////////////////////////////////////////
|
|
#define INTERNAL_CATCH_SCOPED_INFO( log ) \
|
|
Catch::ScopedInfo INTERNAL_CATCH_UNIQUE_NAME( info ); \
|
|
INTERNAL_CATCH_UNIQUE_NAME( info ) << log
|
|
|
|
#endif // TWOBLUECUBES_CATCH_CAPTURE_HPP_INCLUDED
|