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JS_GetLocaleCallbacks 编辑

Get and set locale specific string conversion and error message callbacks.

Syntax

JSLocaleCallbacks *
JS_GetLocaleCallbacks(JSRuntime *rt);

void
JS_SetLocaleCallbacks(JSRuntime *rt, JSLocaleCallbacks *callbacks);

Name	Type	Description
`cx`	`JSContext *`	Pointer to a JS context from which to derive runtime information. Requires request. In a `JS_THREADSAFE` build, the caller must be in a request on this `JSContext`.
`callbacks`	`JSLocaleCallbacks *`	Pointer to a `JSLocaleCallbacks` struct.

Callback functions

struct JSLocaleCallbacks {
    JSLocaleToUpperCase     localeToUpperCase;
    JSLocaleToLowerCase     localeToLowerCase;
    JSLocaleCompare         localeCompare; // not used #if EXPOSE_INTL_API
    JSLocaleToUnicode       localeToUnicode;
};

typedef bool
(* JSLocaleToUpperCase)(JSContext *cx, JS::HandleString src, JS::MutableHandleValue rval);

typedef bool
(* JSLocaleToLowerCase)(JSContext *cx, JS::HandleString src, JS::MutableHandleValue rval);

typedef bool
(* JSLocaleCompare)(JSContext *cx, JS::HandleString src1, JS::HandleString src2,
                    JS::MutableHandleValue rval);

typedef bool
(* JSLocaleToUnicode)(JSContext *cx, const char *src, JS::MutableHandleValue rval);

Type	Description
`JSLocaleToUpperCase`	Implementation of `String.prototype.toLocaleUpperCase()` function.
`JSLocaleToLowerCase`	Implementation of `String.prototype.toLocaleLowerCase()` function.
`JSLocaleCompare`	Implementation of `String.prototype.localeCompare()` function. If `EXPOSE_INTL_API` is defined, Intl API is used instead.
`JSLocaleToUnicode`	Convert locale specific string to Unicode string.

Description

JS_SetLocaleCallbacks establishes locale callbacks. The pointer must persist as long as the JSRuntime. Passing nullptr restores the default behaviour.

JS_GetLocaleCallbacks returns the address of the current locale callbacks struct, which may be nullptr.

JS_GetLocaleCallbacks 编辑

Syntax

Callback functions

Description

See Also

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友情链接

JS_GetLocaleCallbacks 编辑

Syntax

Callback functions

Description

See Also

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友情链接

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。