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Bug 1142794 - Change 'receiver' argument to SetProperty functions and ProxyHandler::set methods to be a HandleValue. r=Waldo.

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Also: Change signature of these functions and methods to all have the same arguments in the same order: (cx, obj, id, v, receiver). Also change v from MutableHandleValue to HandleValue.

There is no change in behavior.

In fact the new error message `JSMSG_SET_NON_OBJECT_RECEIVER` is
impossible to trigger from scripts for now, I think (after re-reading
the whole patch with this in mind). JS_ForwardSetPropertyTo is the only
way to get a non-object receiver into the engine, but no caller
currently does so.

We're installing new pipes here, and they should work, but for now it's
the same cold water flowing through as before. Actually hooking up the
hot water is left for another bug (one with tests, not to put too fine a
point on it).

Notes:

*   InvokeGetterOrSetter had to be split into two functions:
    InvokeGetter takes a MutableHandleValue out-param,
    InvokeSetter a HandleValue in-param.

*   Watchpoints can still tamper with values being assigned. So can
    JSSetterOps. I'm pleased we can support this craziness in a way that
    doesn't have to spread via the type system to encompass the entire
    codebase.

*   Change in GlobalObject::setIntrinsicValue is not really a change.
    Yes, it asserted before, but an exception thrown during self-hosting
    initialization is not going to go unnoticed either.

*   Since the receiver argument to js::SetProperty() is at the end now, it
    makes sense for it to be optional. Some callers look nicer.
This commit is contained in:
Jason Orendorff
2015-03-01 13:16:19 -06:00
parent 1b52d72b95
commit a62fc1c850
55 changed files with 418 additions and 470 deletions
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2
js/ipc/PJavaScript.ipdl
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@@ -33,7 +33,7 @@ both:
prio(high) sync Has(uint64_t objId, JSIDVariant id) returns (ReturnStatus rs, bool has);
prio(high) sync HasOwn(uint64_t objId, JSIDVariant id) returns (ReturnStatus rs, bool has);
prio(high) sync Get(uint64_t objId, ObjectVariant receiver, JSIDVariant id) returns (ReturnStatus rs, JSVariant result);
prio(high) sync Set(uint64_t objId, ObjectVariant receiver, JSIDVariant id, JSVariant value) returns (ReturnStatus rs, JSVariant result);
prio(high) sync Set(uint64_t objId, JSIDVariant id, JSVariant value, JSVariant receiver) returns (ReturnStatus rs);
prio(high) sync IsExtensible(uint64_t objId) returns (ReturnStatus rs, bool result);
prio(high) sync CallOrConstruct(uint64_t objId, JSParam[] argv, bool construct) returns (ReturnStatus rs, JSVariant result, JSParam[] outparams);