132 lines
4.8 KiB
C++
132 lines
4.8 KiB
C++
//
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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 RUNTIMESOURCEDEPENDENCY_INCLUDED
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#define RUNTIMESOURCEDEPENDENCY_INCLUDED
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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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// Source Dependencies are constructed from a macro template from sources which may include
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// the __FILE__ macro, so to reduce inter-dependencies we return three values which are combined
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// by the higher level code. The full source dependency filename is then pseudo-code:
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// RemoveAnyFileName( relativeToPath ) + ReplaceExtension( filename, extension )
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struct SourceDependencyInfo
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{
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static SourceDependencyInfo GetNULL() { SourceDependencyInfo ret = {0,0,0}; return ret; }
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const char* filename; // If NULL then no SourceDependencyInfo
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const char* extension; // If NULL then use extension in filename
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const char* relativeToPath; // If NULL filename is either full or relative to known path
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};
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#ifndef RCCPPOFF
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struct IRuntimeSourceDependencyList
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{
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IRuntimeSourceDependencyList( 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 SourceDependencyInfo GetSourceDependency( size_t Num_ ) const
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{
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return SourceDependencyInfo::GetNULL();
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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 RuntimeSourceDependency : RuntimeSourceDependency<COUNT-1>
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{
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RuntimeSourceDependency( size_t max ) : RuntimeSourceDependency<COUNT-1>( max )
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{
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}
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RuntimeSourceDependency() : RuntimeSourceDependency<COUNT-1>( COUNT )
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{
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}
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virtual SourceDependencyInfo GetSourceDependency( 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->RuntimeSourceDependency< COUNT-1 >::GetSourceDependency( Num_ );
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}
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else return SourceDependencyInfo::GetNULL();
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}
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};
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template<> struct RuntimeSourceDependency<0> : IRuntimeSourceDependencyList
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{
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RuntimeSourceDependency( size_t max ) : IRuntimeSourceDependencyList( max )
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{
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}
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RuntimeSourceDependency() : IRuntimeSourceDependencyList( 0 )
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{
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}
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virtual SourceDependencyInfo GetSourceDependency( size_t Num_ ) const
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{
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return SourceDependencyInfo::GetNULL();
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}
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};
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#define RUNTIME_COMPILER_SOURCEDEPENDENCY_BASE( SOURCEFILE, SOURCEEXT, RELATIVEPATHTO, N ) \
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template<> struct RuntimeSourceDependency< N + 1 > : RuntimeSourceDependency< N >\
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{ \
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RuntimeSourceDependency( size_t max ) : RuntimeSourceDependency<N>( max ) {} \
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RuntimeSourceDependency< N + 1 >() : RuntimeSourceDependency<N>( N + 1 ) {} \
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virtual SourceDependencyInfo GetSourceDependency( 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 { SOURCEFILE, SOURCEEXT, RELATIVEPATHTO }; \
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} \
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else return this->RuntimeSourceDependency< N >::GetSourceDependency( Num_ ); \
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} \
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else return SourceDependencyInfo::GetNULL(); \
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} \
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}; \
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// The RUNTIME_COMPILER_SOURCEDEPENDENCY macro will return the name of the current file, which should be a header file.
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// The runtime system will strip off the extension and add .cpp
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#define RUNTIME_COMPILER_SOURCEDEPENDENCY namespace { RUNTIME_COMPILER_SOURCEDEPENDENCY_BASE( __FILE__, ".cpp", 0, __COUNTER__ ) }
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// if you want to specify another extension use this version:
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#define RUNTIME_COMPILER_SOURCEDEPENDENCY_EXT( EXT_ ) namespace { RUNTIME_COMPILER_SOURCEDEPENDENCY_BASE( __FILE__, EXT_, 0, __COUNTER__ ) }
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// for complete freedom of which file to specify, use this version (FILE_ is relative to current file path):
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#define RUNTIME_COMPILER_SOURCEDEPENDENCY_FILE( FILE_, EXT_ ) namespace { RUNTIME_COMPILER_SOURCEDEPENDENCY_BASE( FILE_, EXT_, __FILE__, __COUNTER__ ) }
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}
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#else
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#define RUNTIME_COMPILER_SOURCEDEPENDENCY
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#endif //RCCPPOFF
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#endif //RUNTIMESOURCEDEPENDENCY_INCLUDED
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