Method DiscoverPermutations

shadercompiler/ParserState.cpp:632–682

}

bool ParserState::DiscoverPermutations( Permutations& permutations )
{
	m_inDiscoverMode = true;
	ScannerToken token;

	bool done = false;
	while( !done )
	{
		PreprocessorToken ppToken;
		PreprocessorScanResult scanCode = GetPreprocessorToken( ppToken );
		switch( scanCode )
		{
		case PPSR_ERROR:
			break;
		case PPSR_EOF: {
			if( m_fileStack.size() > 1 )
			{
				m_fileStack.pop_back();
			}
			else
			{
				done = true;
				break;
			}
		}
		break;
		case PPSR_OK:
			ConvertToScannerToken( *this, ppToken, token );
			break;
		}
	}

	for( auto it = m_pragmas.begin(); it != m_pragmas.end(); ++it )
	{
		auto pragma = ToString( it->pragma );
		if( !IsPermutationPragma( pragma ) )
		{
			break;
		}
		Permutation p;
		if( !GetPermutationInfo( pragma, p ) )
		{
			ShowMessage( it->location, EC_SYNTAX_ERROR, "pragma permutation" );
			return false;
		}
		p.location = it->location;
		permutations.push_back( p );
	}
	m_inDiscoverMode = false;
	return true;
}

bool ParserState::Parse()
{