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C++ CacheIRWriter::loadUnboxedExpando方法代码示例

本文整理汇总了C++中CacheIRWriter::loadUnboxedExpando方法的典型用法代码示例。如果您正苦于以下问题:C++ CacheIRWriter::loadUnboxedExpando方法的具体用法?C++ CacheIRWriter::loadUnboxedExpando怎么用?C++ CacheIRWriter::loadUnboxedExpando使用的例子?那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在CacheIRWriter的用法示例。


在下文中一共展示了CacheIRWriter::loadUnboxedExpando方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: TestMatchingReceiver

static void
EmitReadSlotResult(CacheIRWriter& writer, JSObject* obj, JSObject* holder,
                   Shape* shape, ObjOperandId objId)
{
    TestMatchingReceiver(writer, obj, shape, objId);

    ObjOperandId holderId;
    if (obj != holder) {
        GeneratePrototypeGuards(writer, obj, holder, objId);

        if (holder) {
            // Guard on the holder's shape.
            holderId = writer.loadObject(holder);
            writer.guardShape(holderId, holder->as<NativeObject>().lastProperty());
        } else {
            // The property does not exist. Guard on everything in the prototype
            // chain. This is guaranteed to see only Native objects because of
            // CanAttachNativeGetProp().
            JSObject* proto = obj->getTaggedProto().toObjectOrNull();
            ObjOperandId lastObjId = objId;
            while (proto) {
                ObjOperandId protoId = writer.loadProto(lastObjId);
                writer.guardShape(protoId, proto->as<NativeObject>().lastProperty());
                proto = proto->getProto();
                lastObjId = protoId;
            }
        }
    } else if (obj->is<UnboxedPlainObject>()) {
        holder = obj->as<UnboxedPlainObject>().maybeExpando();
        holderId = writer.loadUnboxedExpando(objId);
    } else {
        holderId = objId;
    }

    // Slot access.
    if (holder) {
        MOZ_ASSERT(holderId.valid());
        EmitLoadSlotResult(writer, holderId, &holder->as<NativeObject>(), shape);
    } else {
        MOZ_ASSERT(!holderId.valid());
        writer.loadUndefinedResult();
    }
}
开发者ID:linclark,项目名称:gecko-dev,代码行数:43,代码来源:CacheIR.cpp


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