Method LookupFunctionDeclaration

shadercompiler/SymbolTable.cpp:155–204

}

Symbol* ScopeSymbolTable::LookupFunctionDeclaration( const InlineString& name, ASTNode* header ) const
{
	std::vector<std::pair<Symbol*, int>> overrides;
	const ScopeSymbolTable* scope = this;
	while( scope )
	{
		for( auto it = scope->m_symbols.begin(); it != scope->m_symbols.end(); ++it )
		{
			if( ( *it )->name == name && ( *it )->definition && ( *it )->definition->GetNodeType() == NT_FUNCTION_HEADER )
			{
				overrides.push_back( std::make_pair( *it, 100000 ) );
			}
		}
		scope = scope->m_parent;
	}
	if( overrides.empty() )
	{
		return nullptr;
	}

	for( auto it = overrides.begin(); it != overrides.end(); ++it )
	{
		ASTNode* node = it->first->definition;
		auto parameterCount = node->GetChildrenCount();
		auto argumentCount = header->GetChildrenCount();

		if( argumentCount != parameterCount )
		{
			continue;
		}
		if( node->GetType() != header->GetType() )
		{
			continue;
		}
		bool match = true;
		for( size_t i = 0; i < argumentCount; ++i )
		{
			if( node->GetChild( i )->GetType() != header->GetChild( i )->GetType() )
			{
				match = false;
				break;
			}
		}
		if( match )
		{
			return it->first;
		}
	}
	return nullptr;
}

Symbol* ScopeSymbolTable::LookupFunction( const InlineString& name, ASTNode* callNode, std::string& diagnosticMessage ) const
{