Example #1
0
ReturnedValue Lookup::globalGetterGeneric(Lookup *l, ExecutionEngine *engine)
{
    Object *o = engine->globalObject();
    PropertyAttributes attrs;
    ReturnedValue v = l->lookup(o, &attrs);
    if (v != Primitive::emptyValue().asReturnedValue()) {
        if (attrs.isData()) {
            if (l->level == 0)
                l->globalGetter = globalGetter0;
            else if (l->level == 1)
                l->globalGetter = globalGetter1;
            else if (l->level == 2)
                l->globalGetter = globalGetter2;
            return v;
        } else {
            if (l->level == 0)
                l->globalGetter = globalGetterAccessor0;
            else if (l->level == 1)
                l->globalGetter = globalGetterAccessor1;
            else if (l->level == 2)
                l->globalGetter = globalGetterAccessor2;
            return v;
        }
    }
    Scope scope(engine);
    ScopedString n(scope, engine->currentContext()->compilationUnit->runtimeStrings[l->nameIndex]);
    return engine->throwReferenceError(n);
}
ReturnedValue Object::getLookup(Managed *m, Lookup *l)
{
    Object *o = static_cast<Object *>(m);
    PropertyAttributes attrs;
    ReturnedValue v = l->lookup(o, &attrs);
    if (v != Primitive::emptyValue().asReturnedValue()) {
        if (attrs.isData()) {
            if (l->level == 0)
                l->getter = Lookup::getter0;
            else if (l->level == 1)
                l->getter = Lookup::getter1;
            else if (l->level == 2)
                l->getter = Lookup::getter2;
            else
                l->getter = Lookup::getterFallback;
            return v;
        } else {
            if (l->level == 0)
                l->getter = Lookup::getterAccessor0;
            else if (l->level == 1)
                l->getter = Lookup::getterAccessor1;
            else if (l->level == 2)
                l->getter = Lookup::getterAccessor2;
            else
                l->getter = Lookup::getterFallback;
            return v;
        }
    }
    return Encode::undefined();
}
Example #3
0
ReturnedValue Lookup::getterGeneric(Lookup *l, ExecutionEngine *engine, const Value &object)
{
    if (Object *o = object.asObject())
        return o->getLookup(l);

    Object *proto;
    switch (object.type()) {
    case Value::Undefined_Type:
    case Value::Null_Type:
        return engine->throwTypeError();
    case Value::Boolean_Type:
        proto = engine->booleanPrototype.asObject();
        break;
    case Value::Managed_Type: {
        Q_ASSERT(object.isString());
        proto = engine->stringPrototype.asObject();
        Scope scope(engine);
        ScopedString name(scope, engine->currentContext()->compilationUnit->runtimeStrings[l->nameIndex]);
        if (name->equals(engine->id_length)) {
            // special case, as the property is on the object itself
            l->getter = stringLengthGetter;
            return stringLengthGetter(l, engine, object);
        }
        break;
    }
    case Value::Integer_Type:
    default: // Number
        proto = engine->numberPrototype.asObject();
    }

    PropertyAttributes attrs;
    ReturnedValue v = l->lookup(object, proto, &attrs);
    if (v != Primitive::emptyValue().asReturnedValue()) {
        l->type = object.type();
        l->proto = proto;
        if (attrs.isData()) {
            if (l->level == 0)
                l->getter = Lookup::primitiveGetter0;
            else if (l->level == 1)
                l->getter = Lookup::primitiveGetter1;
            return v;
        } else {
            if (l->level == 0)
                l->getter = Lookup::primitiveGetterAccessor0;
            else if (l->level == 1)
                l->getter = Lookup::primitiveGetterAccessor1;
            return v;
        }
    }

    return Encode::undefined();
}
Example #4
0
ReturnedValue Object::getLookup(const Managed *m, Lookup *l)
{
    const Object *o = static_cast<const Object *>(m);
    PropertyAttributes attrs;
    ReturnedValue v = l->lookup(o, &attrs);
    if (v != Primitive::emptyValue().asReturnedValue()) {
        l->proto = l->classList[0]->prototype;
        if (attrs.isData()) {
            Q_ASSERT(l->classList[0] == o->internalClass());
            if (l->level == 0) {
                uint nInline = o->d()->vtable()->nInlineProperties;
                if (l->index < nInline)
                    l->getter = Lookup::getter0Inline;
                else {
                    l->index -= nInline;
                    l->getter = Lookup::getter0MemberData;
                }
                }
            else if (l->level == 1)
                l->getter = Lookup::getter1;
            else if (l->level == 2)
                l->getter = Lookup::getter2;
            else
                l->getter = Lookup::getterFallback;
            return v;
        } else {
            if (l->level == 0)
                l->getter = Lookup::getterAccessor0;
            else if (l->level == 1)
                l->getter = Lookup::getterAccessor1;
            else if (l->level == 2)
                l->getter = Lookup::getterAccessor2;
            else
                l->getter = Lookup::getterFallback;
            return v;
        }
    }
    return Encode::undefined();
}
Example #5
0
bool Object::__defineOwnProperty__(ExecutionEngine *engine, uint index, String *member, const Property *p, PropertyAttributes attrs)
{
    // clause 5
    if (attrs.isEmpty())
        return true;

    Scope scope(engine);
    ScopedProperty current(scope);
    PropertyAttributes cattrs;
    if (member) {
        getProperty(index, current, &cattrs);
        cattrs = internalClass()->propertyData[index];
    } else if (arrayData()) {
        arrayData()->getProperty(index, current, &cattrs);
        cattrs = arrayData()->attributes(index);
    }

    // clause 6
    if (p->isSubset(attrs, current, cattrs))
        return true;

    // clause 7
    if (!cattrs.isConfigurable()) {
        if (attrs.isConfigurable())
            goto reject;
        if (attrs.hasEnumerable() && attrs.isEnumerable() != cattrs.isEnumerable())
            goto reject;
    }

    // clause 8
    if (attrs.isGeneric() || current->value.isEmpty())
        goto accept;

    // clause 9
    if (cattrs.isData() != attrs.isData()) {
        // 9a
        if (!cattrs.isConfigurable())
            goto reject;
        if (cattrs.isData()) {
            // 9b
            cattrs.setType(PropertyAttributes::Accessor);
            cattrs.clearWritable();
            if (!member) {
                // need to convert the array and the slot
                initSparseArray();
                Q_ASSERT(arrayData());
                setArrayAttributes(index, cattrs);
            }
            current->setGetter(0);
            current->setSetter(0);
        } else {
            // 9c
            cattrs.setType(PropertyAttributes::Data);
            cattrs.setWritable(false);
            if (!member) {
                // need to convert the array and the slot
                setArrayAttributes(index, cattrs);
            }
            current->value = Primitive::undefinedValue();
        }
    } else if (cattrs.isData() && attrs.isData()) { // clause 10
        if (!cattrs.isConfigurable() && !cattrs.isWritable()) {
            if (attrs.isWritable() || !current->value.sameValue(p->value))
                goto reject;
        }
    } else { // clause 10
        Q_ASSERT(cattrs.isAccessor() && attrs.isAccessor());
        if (!cattrs.isConfigurable()) {
            if (!p->value.isEmpty() && current->value.rawValue() != p->value.rawValue())
                goto reject;
            if (!p->set.isEmpty() && current->set.rawValue() != p->set.rawValue())
                goto reject;
        }
    }

  accept:

    current->merge(cattrs, p, attrs);
    if (member) {
        InternalClass::changeMember(this, member, cattrs);
        setProperty(index, current);
    } else {
        setArrayAttributes(index, cattrs);
        arrayData()->setProperty(scope.engine, index, current);
    }
    return true;
  reject:
    if (engine->current->strictMode)
        engine->throwTypeError();
    return false;
}
bool Object::__defineOwnProperty__(ExecutionContext *ctx, uint index, const StringRef member, const Property &p, PropertyAttributes attrs)
{
    // clause 5
    if (attrs.isEmpty())
        return true;

    Property *current;
    PropertyAttributes cattrs;
    if (!member.isNull()) {
        current = propertyAt(index);
        cattrs = internalClass->propertyData[index];
    } else {
        current = arrayData->getProperty(index);
        cattrs = arrayData->attributes(index);
    }

    // clause 6
    if (p.isSubset(attrs, *current, cattrs))
        return true;

    // clause 7
    if (!cattrs.isConfigurable()) {
        if (attrs.isConfigurable())
            goto reject;
        if (attrs.hasEnumerable() && attrs.isEnumerable() != cattrs.isEnumerable())
            goto reject;
    }

    // clause 8
    if (attrs.isGeneric() || current->value.isEmpty())
        goto accept;

    // clause 9
    if (cattrs.isData() != attrs.isData()) {
        // 9a
        if (!cattrs.isConfigurable())
            goto reject;
        if (cattrs.isData()) {
            // 9b
            cattrs.setType(PropertyAttributes::Accessor);
            cattrs.clearWritable();
            if (member.isNull()) {
                // need to convert the array and the slot
                initSparseArray();
                setArrayAttributes(index, cattrs);
                current = arrayData->getProperty(index);
            }
            current->setGetter(0);
            current->setSetter(0);
        } else {
            // 9c
            cattrs.setType(PropertyAttributes::Data);
            cattrs.setWritable(false);
            if (member.isNull()) {
                // need to convert the array and the slot
                setArrayAttributes(index, cattrs);
                current = arrayData->getProperty(index);
            }
            current->value = Primitive::undefinedValue();
        }
    } else if (cattrs.isData() && attrs.isData()) { // clause 10
        if (!cattrs.isConfigurable() && !cattrs.isWritable()) {
            if (attrs.isWritable() || !current->value.sameValue(p.value))
                goto reject;
        }
    } else { // clause 10
        Q_ASSERT(cattrs.isAccessor() && attrs.isAccessor());
        if (!cattrs.isConfigurable()) {
            if (!p.value.isEmpty() && current->value.val != p.value.val)
                goto reject;
            if (!p.set.isEmpty() && current->set.val != p.set.val)
                goto reject;
        }
    }

  accept:

    current->merge(cattrs, p, attrs);
    if (!member.isNull()) {
        InternalClass::changeMember(this, member.getPointer(), cattrs);
    } else {
        setArrayAttributes(index, cattrs);
    }
    if (cattrs.isAccessor())
        hasAccessorProperty = 1;
    return true;
  reject:
    if (ctx->strictMode)
        ctx->throwTypeError();
    return false;
}