Method SetupParametersAndReturnVariable

sdk/angelscript/source/as_compiler.cpp:474–574

internal

// internal
int asCCompiler::SetupParametersAndReturnVariable(asCArray<asCString> &parameterNames, asCScriptNode *func)
{
	int stackPos = 0;

	if( outFunc->objectType )
		stackPos = -AS_PTR_SIZE; // The first parameter is the pointer to the object

	// Add the first variable scope, which the parameters and
	// variables declared in the outermost statement block is
	// part of.
	AddVariableScope();

	bool isDestructor = false;
	asCDataType returnType;

	// Examine return type
	returnType = outFunc->returnType;

	// Check if this is a constructor or destructor
	if( returnType.GetTokenType() == ttVoid && outFunc->objectType )
	{
		if( outFunc->name[0] == '~' )
			isDestructor = true;
		else if( outFunc->objectType->name == outFunc->name )
			m_isConstructor = true;
	}

	// Is the return type allowed?
	if( returnType != asCDataType::CreatePrimitive(ttVoid, false) &&
		!returnType.CanBeInstantiated() &&
		!returnType.IsReference() &&
		!returnType.IsObjectHandle() )
	{
		// TODO: Hasn't this been validated by the builder already?
		asCString str;
		str.Format(TXT_RETURN_CANT_BE_s, returnType.Format(outFunc->nameSpace).AddressOf());
		Error(str, func);
	}

	// If the return type is a value type returned by value the address of the
	// location where the value will be stored is pushed on the stack before
	// the arguments
	if( !(isDestructor || m_isConstructor) && outFunc->DoesReturnOnStack() )
		stackPos -= AS_PTR_SIZE;

	asCVariableScope vs(0);

	// Declare parameters
	asUINT n;
	for( n = 0; n < parameterNames.GetLength(); n++ )
	{
		// Get the parameter type
		asCDataType &type = outFunc->parameterTypes[n];
		asETypeModifiers inoutFlag = n < outFunc->inOutFlags.GetLength() ? outFunc->inOutFlags[n] : asTM_NONE;

		// Is the data type allowed?
		// TODO: Hasn't this been validated by the builder already?
		if( (type.IsReference() && inoutFlag != asTM_INOUTREF && !type.CanBeInstantiated()) ||