template<typename T>

class FunctionCallbackInfo {

public:

/** The number of available arguments. */

V8_INLINE int Length() const;

/** Accessor for the available arguments. */

V8_INLINE Local<Value> operator[](int i) const;

V8_INLINE V8_DEPRECATED("Use Data() to explicitly pass Callee instead",

Local<Function> Callee() const);

/** Returns the receiver. This corresponds to the "this" value. */

V8_INLINE Local<Object> This() const;

/**

* If the callback was created without a Signature, this is the same

* value as This(). If there is a signature, and the signature didn't match

* This() but one of its hidden prototypes, this will be the respective

* hidden prototype.

*

* Note that this is not the prototype of This() on which the accessor

* referencing this callback was found (which in V8 internally is often

* referred to as holder [sic]).

*/

V8_INLINE Local<Object> Holder() const;

/** For construct calls, this returns the "new.target" value. */

V8_INLINE Local<Value> NewTarget() const;

/** Indicates whether this is a regular call or a construct call. */

V8_INLINE bool IsConstructCall() const;

/** The data argument specified when creating the callback. */

V8_INLINE Local<Value> Data() const;

/** The current Isolate. */

V8_INLINE Isolate* GetIsolate() const;

/** The ReturnValue for the call. */

V8_INLINE ReturnValue<T> GetReturnValue() const;

// This shouldn't be public, but the arm compiler needs it.

static const int kArgsLength = 8;

friend class FunctionTemplate;

};

/**

* A Signature specifies which receiver is valid for a function.

*

* A receiver matches a given signature if the receiver (or any of its

* hidden prototypes) was created from the signature's FunctionTemplate, or

* from a FunctionTemplate that inherits directly or indirectly from the

* signature's FunctionTemplate.

*/

class V8_EXPORT Signature : public Data {

public: