Function GatherFields

shadercompiler/EffectCompilerMetal.cpp:2228–2252

Collects fields from nested structures and copies them int a flat structure In the process gathers access expressions for source struct fields (in the form blah.foo.bar...)

// Collects fields from nested structures and copies them int a flat structure
// In the process gathers access expressions for source struct fields (in the form blah.foo.bar...)
void GatherFields( ASTNode* destStruct, std::vector<ASTNode*>& accessors, ASTNode* accessParent, ASTNode* sourceStruct, ParserState& state )
{
	for( auto member : sourceStruct->GetChildren() )
	{
		if( member->GetType().IsStruct() )
		{
			for( auto name : member->GetChildren() )
			{
				GatherFields( destStruct, accessors, NewDot( state, accessParent->Copy(), name->GetSymbol() ), name->GetType().symbol->definition, state );
			}
		}
		else
		{
			for( auto name : member->GetChildren() )
			{
				auto it = s_systemSemantics.find( name->GetSymbol()->semantic );
				if( it == s_systemSemantics.end() )
				{
					destStruct->AddChild( NewStructMember( state, name->GetSymbol() ) );
					accessors.push_back( NewDot( state, accessParent->Copy(), name->GetSymbol() ) );
				}
			}
		}
	}
}

void GatherSystemFields( ASTNode* destStruct, std::vector<ASTNode*>& accessors, std::vector<ASTNode*>& argumentAccessors, ASTNode* accessParent, ASTNode* sourceStruct, ASTNode* shaderBody, ParserState& state )
{