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;
}