113 lines
3.1 KiB
C
113 lines
3.1 KiB
C
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//
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// Copyright (c) 2010-2011 Matthew Jack and Doug Binks
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//
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// This software is provided 'as-is', without any express or implied
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// warranty. In no event will the authors be held liable for any damages
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// arising from the use of this software.
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// Permission is granted to anyone to use this software for any purpose,
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// including commercial applications, and to alter it and redistribute it
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// freely, subject to the following restrictions:
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// 1. The origin of this software must not be misrepresented; you must not
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// claim that you wrote the original software. If you use this software
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// in a product, an acknowledgment in the product documentation would be
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// appreciated but is not required.
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// 2. Altered source versions must be plainly marked as such, and must not be
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// misrepresented as being the original software.
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// 3. This notice may not be removed or altered from any source distribution.
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#pragma once
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#ifndef RUNTIMEINCLUDE_INCLUDED
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#define RUNTIMEINCLUDE_INCLUDED
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#include <stddef.h>
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#ifndef RCCPPOFF
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//NOTE: the file macro will only emit the full path if /FC option is used in visual studio or /ZI (Which forces /FC)
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//Following creates a list of files which are runtime modifiable, to be used in headers
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//requires use of __COUNTER__ predefined macro, which is in gcc 4.3+, clang/llvm and MSVC
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struct IRuntimeIncludeFileList
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{
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IRuntimeIncludeFileList( size_t max ) : MaxNum( max )
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{
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}
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// GetIncludeFile may return 0, so you should iterate through to GetMaxNum() ignoring 0 returns
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virtual const char* GetIncludeFile( size_t Num_ ) const
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{
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return 0;
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}
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size_t MaxNum; // initialized in constructor below
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};
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namespace
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{
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template< size_t COUNT > struct RuntimeIncludeFiles : public RuntimeIncludeFiles<COUNT-1>
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{
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RuntimeIncludeFiles( size_t max ) : RuntimeIncludeFiles<COUNT-1>( max )
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{
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}
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RuntimeIncludeFiles() : RuntimeIncludeFiles<COUNT-1>( COUNT )
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{
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}
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virtual const char* GetIncludeDir( size_t Num_ ) const
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{
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if( Num_ < COUNT )
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{
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return this->RuntimeIncludeFiles< COUNT-1 >::GetIncludeDir( Num_ );
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}
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else return 0;
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}
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};
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template<> struct RuntimeIncludeFiles<0> : public IRuntimeIncludeFileList
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{
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RuntimeIncludeFiles( size_t max ) : IRuntimeIncludeFileList( max )
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{
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}
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RuntimeIncludeFiles() : IRuntimeIncludeFileList( 0 )
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{
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}
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virtual const char* GetIncludeDir( size_t Num_ ) const
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{
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return 0;
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}
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};
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#define RUNTIME_MODIFIABLE_INCLUDE_BASE( N ) \
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template<> struct RuntimeIncludeFiles< N + 1 > : public RuntimeIncludeFiles< N >\
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{ \
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RuntimeIncludeFiles( size_t max ) : RuntimeIncludeFiles<N>( max ) {} \
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RuntimeIncludeFiles< N + 1 >() : RuntimeIncludeFiles<N>( N + 1 ) {} \
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virtual const char* GetIncludeFile( size_t Num_ ) const \
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{ \
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if( Num_ <= N ) \
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{ \
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if( Num_ == N ) \
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{ \
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return __FILE__; \
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} \
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else return this->RuntimeIncludeFiles< N >::GetIncludeFile( Num_ ); \
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} \
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else return 0; \
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} \
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}; \
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#define RUNTIME_MODIFIABLE_INCLUDE namespace { RUNTIME_MODIFIABLE_INCLUDE_BASE( __COUNTER__ ) }
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}
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#else
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#define RUNTIME_MODIFIABLE_INCLUDE
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#endif //RCCPPOFF
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#endif //RUNTIMEINCLUDE_INCLUDED
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