Native Functions: Seed Reference Manual

Native Functions

Native Functions

Functions

SeedValue	(*SeedFunctionCallback) ()
SeedObject	seed_make_function ()
void	seed_create_function ()

Includes

#include <seed/seed.h>

Description

Functions

SeedFunctionCallback ()

SeedValue
(*SeedFunctionCallback) (SeedContext ctx,
                         SeedObject function,
                         SeedObject this_object,
                         gsize argument_count,
                         const SeedValue arguments[],
                         SeedException *exception);

All native C function callbacks should use the prototype of SeedFunctionCallback.

Parameters

ctx	A SeedContext
function	The SeedObject representing the function
this_object	The SeedObject representing the "this" object in the caller
argument_count	The number of arguments passed into the callback
arguments	An array of SeedValues; the value of the arguments passed in
exception	A reference to a SeedException; use `seed_make_exception()` in order to throw a JavaScript exception from the callback.

Returns

The SeedValue to return to the caller

seed_make_function ()

SeedObject
seed_make_function (SeedContext ctx,
                    SeedFunctionCallback func,
                    const gchar *name);

Creates a JavaScript object representing a first-class function; when the function is called from JavaScript, func will be called.

Parameters

ctx	A valid SeedContext
func	A SeedFunctionCallback to implement the function.
name	The name of the function (used in exceptions).

Returns

A SeedObject representing the function

seed_create_function ()

void
seed_create_function (SeedContext ctx,
                      gchar *name,
                      SeedFunctionCallback func,
                      SeedObject obj);

Creates a JavaScript object representing a first-class function; when the function is called from JavaScript, func will be called. Places the created function as the property name on obj .

Parameters

ctx	A valid SeedContext
name	The name of the function (used in exceptions).
func	A SeedFunctionCallback to implement the function.
obj	The SeedObject on which to put the function.