Namespace

JavaScriptCore – 4.1

The JavaScriptCore library

Version	2.39.90
Authors	The WebKit GTK and WPE teams
License	BSD, LGPL-2.1
Website	https://webkit.org
Source

Build

C headers	`jsc/jsc.h`
pkg-config files	`javascriptcoregtk-4.1`

Dependencies

GObject—2.0	The base type system library
	Browse documentation

Additional documentation

Classes Hierarchy

Classes

Class	A JSSClass represents a custom JavaScript class registered by the user in a `JSCContext`. It allows to create new JavaScripts objects whose instances are created by the user using this API. It’s possible to add constructors, properties and methods for a JSSClass by providing `GCallback`s to implement them.
Context	JSCContext represents a JavaScript execution context, where all operations take place and where the values will be associated.
Exception	JSCException represents a JavaScript exception.
Value	JSCValue represents a reference to a value in a `JSCContext`. The JSCValue protects the referenced value from being garbage collected.
VirtualMachine	JSCVirtualMachine represents a group of JSCContexts. It allows concurrent JavaScript execution by creating a different instance of JSCVirtualMachine in each thread.
WeakValue	JSCWeakValue represents a weak reference to a value in a `JSCContext`. It can be used to keep a reference to a JavaScript value without protecting it from being garbage collected and without referencing the `JSCContext` either.

Structs

ClassVTable

Virtual table for a JSCClass. This can be optionally used when registering a JSCClass in a JSCContext to provide a custom implementation for the class. All virtual functions are optional and can be set to NULL to fallback to the default implementation.

Enumerations

CheckSyntaxMode	Enum values to specify a mode to check for syntax errors in jsc_context_check_syntax().
CheckSyntaxResult	Enum values to specify the result of jsc_context_check_syntax().
OptionType	Enum values for options types.
TypedArrayType	Possible types of the elements contained in a typed array.

Bitfields

ValuePropertyFlags

Flags used when defining properties with jsc_value_object_define_property_data() and jsc_value_object_define_property_accessor().

Callbacks

ClassDeletePropertyFunction	The type of delete_property in `JSCClassVTable`. This is only required when you need to handle external properties not added to the prototype.
ClassEnumeratePropertiesFunction	The type of enumerate_properties in `JSCClassVTable`. This is only required when you need to handle external properties not added to the prototype.
ClassGetPropertyFunction	The type of get_property in `JSCClassVTable`. This is only required when you need to handle external properties not added to the prototype.
ClassHasPropertyFunction	The type of has_property in `JSCClassVTable`. This is only required when you need to handle external properties not added to the prototype.
ClassSetPropertyFunction	The type of set_property in `JSCClassVTable`. This is only required when you need to handle external properties not added to the prototype.
ExceptionHandler	Function used to handle JavaScript exceptions in a `JSCContext`.
OptionsFunc	Function used to iterate options.

Functions

get_major_version	Returns the major version number of the JavaScriptCore library. (e.g. in JavaScriptCore version 1.8.3 this is 1.)
get_micro_version	Returns the micro version number of the JavaScriptCore library. (e.g. in JavaScriptCore version 1.8.3 this is 3.)
get_minor_version	Returns the minor version number of the JavaScriptCore library. (e.g. in JavaScriptCore version 1.8.3 this is 8.)
options_foreach	Iterates all available options calling `function` for each one. Iteration can stop early if `function` returns `FALSE`.
options_get_boolean	Get `option` as a #gboolean value.
options_get_double	Get `option` as a #gdouble value.
options_get_int	Get `option` as a #gint value.
options_get_option_group	Create a `GOptionGroup` to handle JSCOptions as command line arguments. The options will be exposed as command line arguments with the form —jsc-<option>=<value>. Each entry in the returned `GOptionGroup` is configured to apply the corresponding option during command line parsing. Applications only need to pass the returned group to g_option_context_add_group(), and the rest will be taken care for automatically.
options_get_range_string	Get `option` as a range string. The string must be in the format [!]<low>[:<high>] where low and high are #guint values. Values between low and high (both included) will be considered in the range, unless ! is used to invert the range.
options_get_size	Get `option` as a #gsize value.
options_get_string	Get `option` as a string.
options_get_uint	Get `option` as a #guint value.
options_set_boolean	Set `option` as a #gboolean value.
options_set_double	Set `option` as a #gdouble value.
options_set_int	Set `option` as a #gint value.
options_set_range_string	Set `option` as a range string. The string must be in the format [!]<low>[:<high>] where low and high are #guint values. Values between low and high (both included) will be considered in the range, unless ! is used to invert the range.
options_set_size	Set `option` as a #gsize value.
options_set_string	Set `option` as a string.
options_set_uint	Set `option` as a #guint value.

Function Macros

CHECK_VERSION	Check the version of JSC header files at compile time.
DECLARE_FINAL_TYPE

Constants

MAJOR_VERSION	Like jsc_get_major_version(), but from the headers used at application compile time, rather than from the library linked against at application run time.
MICRO_VERSION	Like jsc_get_micro_version(), but from the headers used at application compile time, rather than from the library linked against at application run time.
MINOR_VERSION	Like jsc_get_minor_version(), but from the headers used at application compile time, rather than from the library linked against at application run time.
OPTIONS_USE_DFG	Allows the DFG JIT to be used if `TRUE`. Option type: `JSC_OPTION_BOOLEAN` Default value: `TRUE`.
OPTIONS_USE_FTL	Allows the FTL JIT to be used if `TRUE`. Option type: `JSC_OPTION_BOOLEAN` Default value: `TRUE`.
OPTIONS_USE_JIT	Allows the executable pages to be allocated for JIT and thunks if `TRUE`. Option type: `JSC_OPTION_BOOLEAN` Default value: `TRUE`.
OPTIONS_USE_LLINT	Allows the LLINT to be used if `TRUE`. Option type: `JSC_OPTION_BOOLEAN` Default value: `TRUE`.