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    JSVAL TO GCTHING

    Cast a jsval to a raw pointer of type void *.

    Syntax

    JSVAL_TO_GCTHING(v)
    

    Description

    JSVAL_TO_GCTHING casts a jsval, v, to a raw pointer. The type of the result is void *.

    v must be either JSVAL_NULL or a reference to a GC thing. Otherwise the resulting pointer is undefined. JSVAL_IS_GCTHING may be used to check this.

    This macro is exposed in jsapi.h because other JSAPI macros make use of it. Applications should not call it directly in most cases. When possible, it is better to use a more specific macro, such as JSVAL_TO_OBJECT or JSVAL_TO_STRING. Another possible alternative is to avoid casting altogether by using an API that operates on jsvals rather than raw pointers (for example, JS_CALL_VALUE_TRACER rather than JS_CALL_TRACER).

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    Contributors to this page: Jorend
    Last updated by: Jorend,