JSEnumerateOp
is the type of the JSClass.enumerate
callback.
Syntax
typedef bool (* JSEnumerateOp)(JSContext *cx, JS::HandleObject obj);
Name | Type | Description |
---|---|---|
cx |
JSContext * |
Pointer to the JS context in which the enumeration is taking place. |
obj |
JS::HandleObject |
Pointer to the object to be enumerated. |
Description
JSEnumerateOp
is called just before an object is enumerated (via a for...in
statement, an array comprehension, or a call to JS_Enumerate
). It should define any remaining lazy properties that should be enumerable but are not yet defined in obj
. This hook does not implement iteration: once the properties are defined, the JavaScript engine can enumerate them.
JSClass
hooks
JSClass offers following hook:
- The
JSClass.enumerate
hook is for classes that implement lazy properties usingJSClass.resolve
.