ScriptValue
ScriptNodeFunctionCall::execute(
ScriptExecutionContext* theContext)
{
try
{
theContext->countNodeExecution(this);
ScriptValue fctRef = functionM->execute(theContext);
ScriptObject* object = fctRef.getBase();
// Create argument array
ScriptValueArray arguments;
arguments.reserve(argumentListM.size());
// Evaluate function call arguments
for (ScriptNodeArray::iterator iter = argumentListM.begin();
iter != argumentListM.end();
iter++)
{
ScriptValue result((*iter)->execute(theContext));
if (result.getDataType() == ScriptValue::ReferenceE)
{
result = result.getReferenceValue();
}
arguments.push_back(result);
}
const std::string fctName = fctRef.getPropertyName();
theContext->traceFunctionCall(object, fctName, arguments);
if (object != 0)
{
return object->call(fctName,
theContext,
arguments,
isConstructorM);
}
else
{
ScriptValue fct = fctRef.getValue();
if (fct.getDataType() != ScriptValue::ObjectE)
{
std::string errorMessage("Identifier '");
errorMessage += fctName;
errorMessage += "' does not refer to a function.";
throw ScriptTypeError(errorMessage, getFile(), getLine());
}
object = fct.toObject();
if (object->getObjectType() != ScriptObject::FunctionE)
{
std::string errorMessage("Identifier '");
errorMessage += fctName;
errorMessage += "' does not refer to a function.";
throw ScriptTypeError(errorMessage, getFile(), getLine());
}
ScriptObjectActivation* activationObject = new ScriptObjectActivation;
if (isConstructorM == false)
{
// Function is not used as a constructor.
theContext->addObjectToScopeChain(activationObject);
ScriptValue result(object->call(theContext, arguments));
theContext->removeObjectFromScopeChain();
return result;
}
else
{
// Function is used as a constructor.
// Create a new object
ScriptObject* newObject = new ScriptObject(ScriptObject::ObjectE);
ScriptValue result(newObject);
newObject->putProperty(
PrototypeC,
ScriptValue(object),
ScriptProperty::DontEnumE |
ScriptProperty::DontDeleteE |
ScriptProperty::ReadOnlyE);
activationObject->putProperty(ThisC, newObject);
theContext->addObjectToScopeChain(activationObject);
object->call(theContext, arguments);
theContext->removeObjectFromScopeChain();
return result;
}
}
}
catch (ScriptReferenceError& e)
{
if (e.getLine() == 0)
{
e.setLineAndFile(getLine(), getFile());
}
throw e;
}
catch (ScriptTypeError& e)
{
if (e.getLine() == 0)
{
e.setLineAndFile(getLine(), getFile());
}
throw e;
}
catch (ScriptUserDefinedException& e)
{
if (e.getLine() == 0)
{
e.setLineAndFile(getLine(), getFile());
}
throw e;
}
}
