Constructor

JavaScriptCoreValuenew_functionv

Declaration [src] 

JSCValue*
jsc_value_new_functionv (
  JSCContext* context,
  const char* name,
  GCallback callback,
  gpointer user_data,
  GDestroyNotify destroy_notify,
  GType return_type,
  guint n_parameters,
  GType* parameter_types
)

Description [src]

Create a function in context. If name is NULL an anonymous function will be created. When the function is called by JavaScript or jsc_value_function_call(), callback is called receiving the function parameters and then user_data as last parameter. When the function is cleared in context, destroy_notify is called with user_data as parameter.

Note that the value returned by callback must be fully transferred. In case of boxed types, you could use G_TYPE_POINTER instead of the actual boxed GType to ensure that the instance owned by JSCClass is used. If you really want to return a new copy of the boxed type, use #JSC_TYPE_VALUE and return a JSCValue created with jsc_value_new_object() that receives the copy as instance parameter.

Parameters

context

Type: JSCContext

A JSCContext.

The data is owned by the caller of the function.
name

Type: const char*

The function name or NULL.

The argument can be NULL.
The data is owned by the caller of the function.
The value is a NUL terminated UTF-8 string.
callback

Type: GCallback

A GCallback.

user_data

Type: gpointer

User data to pass to callback.

The argument can be NULL.
The data is owned by the caller of the function.
destroy_notify

Type: GDestroyNotify

Destroy notifier for user_data.

The argument can be NULL.
return_type

Type: GType

The GType of the function return value, or G_TYPE_NONE if the function is void.

n_parameters

Type: guint

The number of parameters.

parameter_types

Type: An array of GType

A list of GTypes, one for each parameter, or NULL.

The argument can be NULL.
The length of the array is specified in the n_parameters argument.
The data is owned by the caller of the function.

Return value

Type: JSCValue

A JSCValue.

The caller of the function takes ownership of the data, and is responsible for freeing it.