public JsValue EvaluateCallExpression(CallExpression callExpression)
{
var callee = EvaluateExpression(callExpression.Callee);
if (_engine.Options._IsDebugMode)
{
_engine.DebugHandler.AddToDebugCallStack(callExpression);
}
JsValue thisObject;
// todo: implement as in http://www.ecma-international.org/ecma-262/5.1/#sec-11.2.4
JsValue[] arguments;
if (callExpression.Cached)
{
arguments = callExpression.CachedArguments;
}
else
{
arguments = callExpression.Arguments.Select(EvaluateExpression).Select(_engine.GetValue).ToArray();
if (callExpression.CanBeCached)
{
// The arguments array can be cached if they are all literals
if (callExpression.Arguments.All(x => x is Literal))
{
callExpression.CachedArguments = arguments;
callExpression.Cached = true;
}
else
{
callExpression.CanBeCached = false;
}
}
}
var func = _engine.GetValue(callee);
var r = callee as Reference;
if (_engine.Options._MaxRecursionDepth >= 0)
{
var stackItem = new CallStackElement(callExpression, func, r != null ? r.GetReferencedName() : "anonymous function");
var recursionDepth = _engine.CallStack.Push(stackItem);
if (recursionDepth > _engine.Options._MaxRecursionDepth)
{
_engine.CallStack.Pop();
throw new RecursionDepthOverflowException(_engine.CallStack, stackItem.ToString());
}
}
if (func == Undefined.Instance)
{
throw new JavaScriptException(_engine.TypeError, r == null ? "" : string.Format("Object has no method '{0}'", (callee as Reference).GetReferencedName()));
}
if (!func.IsObject())
{
throw new JavaScriptException(_engine.TypeError, r == null ? "" : string.Format("Property '{0}' of object is not a function", (callee as Reference).GetReferencedName()));
}
var callable = func.TryCast <ICallable>();
if (callable == null)
{
throw new JavaScriptException(_engine.TypeError);
}
if (r != null)
{
if (r.IsPropertyReference())
{
thisObject = r.GetBase();
}
else
{
var env = r.GetBase().TryCast <EnvironmentRecord>();
thisObject = env.ImplicitThisValue();
}
}
else
{
thisObject = Undefined.Instance;
}
// is it a direct call to eval ? http://www.ecma-international.org/ecma-262/5.1/#sec-15.1.2.1.1
if (r != null && r.GetReferencedName() == "eval" && callable is EvalFunctionInstance)
{
return(((EvalFunctionInstance)callable).Call(thisObject, arguments, true));
}
var result = callable.Call(thisObject, arguments);
if (_engine.Options._IsDebugMode)
{
_engine.DebugHandler.PopDebugCallStack();
}
if (_engine.Options._MaxRecursionDepth >= 0)
{
_engine.CallStack.Pop();
}
return(result);
}
public JsValue EvaluateCallExpression(CallExpression callExpression)
{
var callee = EvaluateExpression(callExpression.Callee);
if (_engine.Options.IsDebugMode())
{
_engine.DebugHandler.AddToDebugCallStack(callExpression);
}
JsValue thisObject;
// todo: implement as in http://www.ecma-international.org/ecma-262/5.1/#sec-11.2.4
var arguments = callExpression.Arguments.Select(EvaluateExpression).Select(_engine.GetValue).ToArray();
var func = _engine.GetValue(callee);
var r = callee as Reference;
var isRecursionHandled = _engine.Options.GetMaxRecursionDepth() >= 0;
if (isRecursionHandled)
{
var stackItem = new CallStackElement(callExpression, func, r != null ? r.GetReferencedName() : "anonymous function");
var recursionDepth = _engine.CallStack.Push(stackItem);
if (recursionDepth > _engine.Options.GetMaxRecursionDepth())
{
_engine.CallStack.Pop();
throw new RecursionDepthOverflowException(_engine.CallStack, stackItem.ToString());
}
}
if (func == Undefined.Instance)
{
throw new JavaScriptException(_engine.TypeError, r == null ? "" : string.Format("Object has no method '{0}'", (callee as Reference).GetReferencedName()));
}
if (!func.IsObject())
{
throw new JavaScriptException(_engine.TypeError, r == null ? "" : string.Format("Property '{0}' of object is not a function", (callee as Reference).GetReferencedName()));
}
var callable = func.TryCast<ICallable>();
if (callable == null)
{
throw new JavaScriptException(_engine.TypeError);
}
if (r != null)
{
if (r.IsPropertyReference())
{
thisObject = r.GetBase();
}
else
{
var env = r.GetBase().TryCast<EnvironmentRecord>();
thisObject = env.ImplicitThisValue();
}
}
else
{
thisObject = Undefined.Instance;
}
// is it a direct call to eval ? http://www.ecma-international.org/ecma-262/5.1/#sec-15.1.2.1.1
if (r != null && r.GetReferencedName() == "eval" && callable is EvalFunctionInstance)
{
return ((EvalFunctionInstance) callable).Call(thisObject, arguments, true);
}
var result = callable.Call(thisObject, arguments);
if (_engine.Options.IsDebugMode())
{
_engine.DebugHandler.PopDebugCallStack();
}
if (isRecursionHandled)
{
_engine.CallStack.Pop();
}
return result;
}