/**
15.2.4.5 Object.prototype.hasOwnProperty (V)
When the hasOwnProperty method is called with argument V, the following steps are taken:
1. Let O be this object.
2. Call ToString(V).
3. If O doesnt have a property with the name given by Result(2), return false.
4. Return true.
NOTE Unlike [[HasProperty]] (section 8.6.2.4), this method does not consider objects in the prototype chain.
*/
bool ObjectClass::_hasOwnProperty(Atom thisAtom, Stringp name)
{
AvmCore* core = this->core();
name = name ? core->internString(name) : (Stringp)core->knull;
Traitsp t = NULL;
switch (atomKind(thisAtom))
{
case kObjectType:
{
// ISSUE should this look in traits and dynamic vars, or just dynamic vars.
ScriptObject* obj = AvmCore::atomToScriptObject(thisAtom);
if (obj->hasStringProperty(name))
return true;
t = obj->traits();
break;
}
case kNamespaceType:
case kStringType:
case kBooleanType:
case kDoubleType:
case kIntegerType:
t = toplevel()->toTraits(thisAtom);
break;
default:
return false;
}
return t->getTraitsBindings()->findBinding(name, core->publicNamespace) != BIND_NONE;
}
/**
15.2.4.5 Object.prototype.hasOwnProperty (V)
When the hasOwnProperty method is called with argument V, the following steps are taken:
1. Let O be this object.
2. Call ToString(V).
3. If O doesn't have a property with the name given by Result(2), return false.
4. Return true.
NOTE Unlike [[HasProperty]] (section 8.6.2.4), this method does not consider objects in the prototype chain.
*/
bool ObjectClass::_hasOwnProperty(Atom thisAtom, Stringp name)
{
AvmCore* core = this->core();
name = name ? core->internString(name) : (Stringp)core->knull;
Traitsp t = NULL;
switch (atomKind(thisAtom))
{
case kObjectType:
{
// ISSUE should this look in traits and dynamic vars, or just dynamic vars.
ScriptObject* obj = AvmCore::atomToScriptObject(thisAtom);
// TODO
// The change below is important as otherwise we will throw error in a call to hasAtomProperty for ByteArrayObject.
// This gets us back to the behaviour which we had in Marlin.
// A bugzilla bug [ 562224 ] has been created to address this issue more cleanly in near future
return obj->traits()->getTraitsBindings()->findBinding(name, core->findPublicNamespace()) != BIND_NONE ||
obj->hasStringProperty(name);
}
case kNamespaceType:
case kStringType:
case kBooleanType:
case kDoubleType:
case kIntptrType:
t = toplevel()->toTraits(thisAtom);
break;
default:
return false;
}
// NOTE use caller's public namespace
return t->getTraitsBindings()->findBinding(name, core->findPublicNamespace()) != BIND_NONE;
}
ScriptObject* TypeDescriber::describeTraits(Traitsp traits, uint32_t flags)
{
if (!(flags & INCLUDE_TRAITS))
return NULL;
AvmCore* core = m_toplevel->core();
GC* gc = core->GetGC();
TraitsBindingsp tb = traits->getTraitsBindings();
TraitsMetadatap tm = traits->getTraitsMetadata();
ScriptObject* o = new_object();
ArrayObject* bases = NULL;
ArrayObject* metadata = NULL;
ArrayObject* interfaces = NULL;
ArrayObject* methods = NULL;
ArrayObject* accessors = NULL;
ArrayObject* variables = NULL;
ScriptObject* constructor = NULL;
if (flags & INCLUDE_BASES)
{
metadata = new_array();
PoolObject* class_mdpool;
const uint8_t* class_md = tm->getMetadataPos(class_mdpool);
if (class_md)
addDescribeMetadata(metadata, class_mdpool, class_md);
}
if (flags & INCLUDE_BASES)
{
bases = new_array();
for (Traitsp b = traits->base; b; b = b->base)
pushstr(bases, describeClassName(b));
}
if (flags & INCLUDE_INTERFACES)
{
interfaces = new_array();
// our TraitsBindings only includes our own interfaces, not any we might have inherited,
// so walk the tree. there might be redundant interfaces listed in the inheritance,
// so use a list to remove dupes
List<Traitsp> unique(gc);
for (Traitsp b = traits; b; b = b->base)
{
TraitsBindingsp tbi = b->getTraitsBindings();
for (uint32_t i = 0; i < tbi->interfaceCapacity; ++i)
{
Traitsp ti = tbi->getInterface(i);
if (ti && ti->isInterface && unique.indexOf(ti) < 0)
{
unique.add(ti);
pushstr(interfaces, describeClassName(ti));
}
}
}
}
// constructor
if (flags & INCLUDE_CONSTRUCTOR)
{
AbstractFunction* initMethod = traits->init;
if (initMethod && initMethod->param_count)
{
constructor = describeParams(initMethod);
}
}
if (flags & (INCLUDE_ACCESSORS | INCLUDE_METHODS | INCLUDE_VARIABLES))
{
// recover slot/method metadata and method-declarer information.
// make a flattened set of bindings so we don't have to check for overrides as we go.
// This is not terribly efficient, but doesn't need to be.
MultinameHashtable* mybind = new (gc) MultinameHashtable();
addBindings(mybind, tb, flags);
// Don't want interface methods, so post-process and wipe out any
// bindings that were added
for (uint32_t i = 0; i < tb->interfaceCapacity; ++i)
{
Traitsp ti = tb->getInterface(i);
if (ti && ti->isInterface)
{
TraitsBindingsp tbi = ti->getTraitsBindings();
for (int32_t index = 0; (index = tbi->next(index)) != 0; )
{
Stringp name = tbi->keyAt(index);
Namespacep ns = tbi->nsAt(index);
mybind->add(name, ns, BIND_NONE);
}
}
}
// yuck, replicate buggy behavior in FP9/10
List<Namespacep> nsremoval(gc);
if (flags & HIDE_NSURI_METHODS)
{
for (uint32_t i = 0; i < tb->interfaceCapacity; ++i)
{
Traitsp ti = tb->getInterface(i);
// already did interfaces, don't need to do them again
if (ti && !ti->isInterface)
{
TraitsBindingsp tbi = ti->getTraitsBindings();
for (int32_t index = 0; (index = tbi->next(index)) != 0; )
{
Namespacep ns = tbi->nsAt(index);
if (ns->getURI()->length() > 0 && nsremoval.indexOf(ns) < 0)
nsremoval.add(ns);
}
}
}
}
for (int32_t index = 0; (index = mybind->next(index)) != 0; )
{
Binding binding = mybind->valueAt(index);
Stringp name = mybind->keyAt(index);
Namespacep ns = mybind->nsAt(index);
Stringp nsuri = ns->getURI();
TraitsMetadata::MetadataPtr md1 = NULL;
TraitsMetadata::MetadataPtr md2 = NULL;
PoolObject* md1pool = NULL;
PoolObject* md2pool = NULL;
// We only display public members -- exposing private namespaces could compromise security.
if (ns->getType() != Namespace::NS_Public)
continue;
if ((flags & HIDE_NSURI_METHODS) && nsremoval.indexOf(ns) >= 0)
continue;
ScriptObject* v = new_object();
const BindingKind bk = AvmCore::bindingKind(binding);
switch (bk)
{
case BKIND_CONST:
case BKIND_VAR:
{
if (!(flags & INCLUDE_VARIABLES))
continue;
const uint32_t slotID = AvmCore::bindingToSlotId(binding);
const KVPair props[] = {
{ kstrid_access, strAtom(str(bk == BKIND_CONST ? kstrid_readonly : kstrid_readwrite)) },
{ kstrid_type, strAtom(describeClassName(tb->getSlotTraits(slotID))) },
};
setpropmulti(v, props, elem_count(props));
if (!variables) variables = new_array();
pushobj(variables, v);
md1 = tm->getSlotMetadataPos(slotID, md1pool);
break;
}
case BKIND_METHOD:
{
if (!(flags & INCLUDE_METHODS))
continue;
const uint32_t methodID = AvmCore::bindingToMethodId(binding);
const AbstractFunction* af = tb->getMethod(methodID);
Traitsp declaringTraits = af->declaringTraits;
const KVPair props[] = {
{ kstrid_declaredBy, strAtom(describeClassName(declaringTraits)) },
{ kstrid_returnType, strAtom(describeClassName(af->returnTraits())) },
{ kstrid_parameters, objAtom(describeParams(af)) },
};
setpropmulti(v, props, elem_count(props));
if (!methods) methods = new_array();
pushobj(methods, v);
md1 = tm->getMethodMetadataPos(methodID, md1pool);
break;
}
case BKIND_GET:
case BKIND_SET:
case BKIND_GETSET:
{
if (!(flags & INCLUDE_ACCESSORS))
continue;
const uint32_t methodID = AvmCore::hasGetterBinding(binding) ?
AvmCore::bindingToGetterId(binding) :
AvmCore::bindingToSetterId(binding);
const AbstractFunction* af = tb->getMethod(methodID);
Traitsp declaringTraits = af->declaringTraits;
Traitsp accessorType = AvmCore::hasGetterBinding(binding) ?
af->returnTraits() :
af->paramTraits(1);
static const uint8_t bk2str[8] =
{
uint8_t(kstrid_emptyString), // BKIND_NONE
uint8_t(kstrid_emptyString), // BKIND_METHOD
uint8_t(kstrid_emptyString), // BKIND_VAR
uint8_t(kstrid_emptyString), // BKIND_CONST
uint8_t(kstrid_emptyString), // BKIND_ITRAMP
uint8_t(kstrid_readonly), // BKIND_GET
uint8_t(kstrid_writeonly), // BKIND_SET
uint8_t(kstrid_readwrite) // BKIND_GETSET
};
const KVPair props[] = {
{ kstrid_declaredBy, strAtom(describeClassName(declaringTraits)) },
{ kstrid_access, strAtom(str(StringId(bk2str[bk]))) },
{ kstrid_type, strAtom(describeClassName(accessorType)) },
};
setpropmulti(v, props, elem_count(props));
if (AvmCore::hasGetterBinding(binding))
md1 = tm->getMethodMetadataPos(AvmCore::bindingToGetterId(binding), md1pool);
if (AvmCore::hasSetterBinding(binding))
md2 = tm->getMethodMetadataPos(AvmCore::bindingToSetterId(binding), md2pool);
if (!accessors) accessors = new_array();
pushobj(accessors, v);
break;
}
case BKIND_NONE:
break;
}
ArrayObject* vm = NULL;
if ((flags & INCLUDE_METADATA) && (md1 || md2))
{
vm = new_array();
addDescribeMetadata(vm, md1pool, md1);
addDescribeMetadata(vm, md2pool, md2);
}
const KVPair props[] = {
{ kstrid_name, strAtom(name) },
{ kstrid_uri, strAtom(nsuri->length() == 0 ? NULL : nsuri) },
{ kstrid_metadata, objAtom(vm) },
};
setpropmulti(v, props, elem_count(props));
}
}
const KVPair props[] = {
{ kstrid_bases, objAtom(bases) },
{ kstrid_interfaces, objAtom(interfaces) },
{ kstrid_metadata, objAtom(metadata) },
{ kstrid_accessors, objAtom(accessors) },
{ kstrid_methods, objAtom(methods) },
{ kstrid_variables, objAtom(variables) },
{ kstrid_constructor, objAtom(constructor) },
};
setpropmulti(o, props, elem_count(props));
return o;
}
ScriptObject* TypeDescriber::describeTraits(Traitsp traits, uint32_t flags, Toplevel* toplevel)
{
if (!(flags & INCLUDE_TRAITS))
return NULL;
AvmCore* core = m_toplevel->core();
GC* gc = core->GetGC();
TraitsBindingsp tb = traits->getTraitsBindings();
TraitsMetadatap tm = traits->getTraitsMetadata();
ScriptObject* o = new_object();
ArrayObject* bases = NULL;
ArrayObject* metadata = NULL;
ArrayObject* interfaces = NULL;
ArrayObject* methods = NULL;
ArrayObject* accessors = NULL;
ArrayObject* variables = NULL;
ScriptObject* constructor = NULL;
if (flags & INCLUDE_METADATA)
{
metadata = new_array();
PoolObject* class_mdpool;
const uint8_t* class_md = tm->getMetadataPos(class_mdpool);
if (class_md)
addDescribeMetadata(metadata, class_mdpool, class_md);
}
if (flags & INCLUDE_BASES)
{
bases = new_array();
for (Traitsp b = traits->base; b; b = b->base)
pushstr(bases, describeClassName(b));
}
if (flags & INCLUDE_INTERFACES)
{
interfaces = new_array();
for (InterfaceIterator iter(traits); iter.hasNext();)
{
Traits* ti = iter.next();
pushstr(interfaces, describeClassName(ti));
}
}
// constructor
if (flags & INCLUDE_CONSTRUCTOR)
{
MethodInfo* initMethod = traits->init;
if (initMethod)
{
initMethod->resolveSignature(toplevel);
MethodSignaturep ms = initMethod->getMethodSignature();
if (ms->param_count() > 0)
{
constructor = describeParams(initMethod, ms);
}
}
}
if (flags & (INCLUDE_ACCESSORS | INCLUDE_METHODS | INCLUDE_VARIABLES))
{
// recover slot/method metadata and method-declarer information.
// make a flattened set of bindings so we don't have to check for overrides as we go.
// This is not terribly efficient, but doesn't need to be.
MultinameBindingHashtable* mybind = MultinameBindingHashtable::create(gc);
addBindings(m_toplevel->core(), mybind, tb, flags);
// Don't want interface methods, so post-process and wipe out any
// bindings that were added.
for (InterfaceIterator ifc_iter(traits); ifc_iter.hasNext();)
{
Traitsp ti = ifc_iter.next();
TraitsBindingsp tbi = ti->getTraitsBindings();
StTraitsBindingsIterator iter(tbi);
while (iter.next())
{
if (!iter.key()) continue;
mybind->add(iter.key(), iter.ns(), BIND_NONE);
}
}
// yuck, replicate buggy behavior in FP9/10
RCList<Namespace> nsremoval(gc, kListInitialCapacity);
if (flags & HIDE_NSURI_METHODS)
{
for (TraitsBindingsp tbi = tb->base; tbi; tbi = tbi->base)
{
StTraitsBindingsIterator iter(tbi);
while (iter.next())
{
if (!iter.key()) continue;
Namespacep ns = iter.ns();
if (ns->getURI()->length() > 0 && nsremoval.indexOf(ns) < 0)
{
nsremoval.add(ns);
}
}
}
}
StMNHTBindingIterator iter(mybind);
while (iter.next())
{
if (!iter.key()) continue;
Stringp name = iter.key();
Namespacep ns = iter.ns();
Binding binding = iter.value();
Stringp nsuri = ns->getURI();
TraitsMetadata::MetadataPtr md1 = NULL;
TraitsMetadata::MetadataPtr md2 = NULL;
PoolObject* md1pool = NULL;
PoolObject* md2pool = NULL;
// We only display public members -- exposing private namespaces could compromise security.
if (ns->getType() != Namespace::NS_Public) {
continue;
}
if ((flags & HIDE_NSURI_METHODS) && nsremoval.indexOf(ns) >= 0) {
continue;
}
ScriptObject* v = new_object();
const BindingKind bk = AvmCore::bindingKind(binding);
switch (bk)
{
case BKIND_CONST:
case BKIND_VAR:
{
if (!(flags & INCLUDE_VARIABLES))
continue;
const uint32_t slotID = AvmCore::bindingToSlotId(binding);
const KVPair props[] = {
{ kstrid_access, strAtom(str(bk == BKIND_CONST ? kstrid_readonly : kstrid_readwrite)) },
{ kstrid_type, strAtom(describeClassName(tb->getSlotTraits(slotID))) },
};
setpropmulti(v, props, elem_count(props));
if (!variables) variables = new_array();
pushobj(variables, v);
md1 = tm->getSlotMetadataPos(slotID, md1pool);
break;
}
case BKIND_METHOD:
{
if (!(flags & INCLUDE_METHODS))
continue;
const uint32_t methodID = AvmCore::bindingToMethodId(binding);
MethodInfo* mi = tb->getMethod(methodID);
mi->resolveSignature(toplevel);
MethodSignaturep ms = mi->getMethodSignature();
Traitsp declaringTraits = mi->declaringTraits();
const KVPair props[] = {
{ kstrid_declaredBy, strAtom(describeClassName(declaringTraits)) },
{ kstrid_returnType, strAtom(describeClassName(ms->returnTraits())) },
{ kstrid_parameters, objAtom(describeParams(mi, ms)) },
};
setpropmulti(v, props, elem_count(props));
if (!methods) methods = new_array();
pushobj(methods, v);
md1 = tm->getMethodMetadataPos(methodID, md1pool);
break;
}
case BKIND_GET:
case BKIND_SET:
case BKIND_GETSET:
{
if (!(flags & INCLUDE_ACCESSORS))
continue;
const uint32_t methodID = AvmCore::hasGetterBinding(binding) ?
AvmCore::bindingToGetterId(binding) :
AvmCore::bindingToSetterId(binding);
MethodInfo* mi = tb->getMethod(methodID);
mi->resolveSignature(toplevel);
MethodSignaturep ms = mi->getMethodSignature();
Traitsp declaringTraits = mi->declaringTraits();
// The verifier does not check the signature of a setter
// except when it is invoked. We must be prepared for the
// case in which it has no arguments.
Traitsp accessorType;
if (AvmCore::hasGetterBinding(binding)) {
accessorType = ms->returnTraits();
} else {
// If setter is malformed, just use '*' as a placeholder.
accessorType = (ms->param_count() < 1) ? NULL : ms->paramTraits(1);
}
static const uint8_t bk2str[8] =
{
uint8_t(kstrid_emptyString), // BKIND_NONE
uint8_t(kstrid_emptyString), // BKIND_METHOD
uint8_t(kstrid_emptyString), // BKIND_VAR
uint8_t(kstrid_emptyString), // BKIND_CONST
uint8_t(kstrid_emptyString), // unused
uint8_t(kstrid_readonly), // BKIND_GET
uint8_t(kstrid_writeonly), // BKIND_SET
uint8_t(kstrid_readwrite) // BKIND_GETSET
};
const KVPair props[] = {
{ kstrid_declaredBy, strAtom(describeClassName(declaringTraits)) },
{ kstrid_access, strAtom(str(StringId(bk2str[bk]))) },
{ kstrid_type, strAtom(describeClassName(accessorType)) },
};
setpropmulti(v, props, elem_count(props));
if (AvmCore::hasGetterBinding(binding))
md1 = tm->getMethodMetadataPos(AvmCore::bindingToGetterId(binding), md1pool);
if (AvmCore::hasSetterBinding(binding))
md2 = tm->getMethodMetadataPos(AvmCore::bindingToSetterId(binding), md2pool);
if (!accessors) accessors = new_array();
pushobj(accessors, v);
break;
}
case BKIND_NONE:
break;
default:
break;
}
ArrayObject* vm = NULL;
if ((flags & INCLUDE_METADATA) && (md1 || md2))
{
vm = new_array();
addDescribeMetadata(vm, md1pool, md1);
addDescribeMetadata(vm, md2pool, md2);
}
const KVPair props[] = {
{ kstrid_name, strAtom(name) },
{ kstrid_uri, strAtom(nsuri->length() == 0 ? NULL : nsuri) },
{ kstrid_metadata, objAtom(vm) },
};
setpropmulti(v, props, elem_count(props));
}
}
const KVPair props[] = {
{ kstrid_bases, objAtom(bases) },
{ kstrid_interfaces, objAtom(interfaces) },
{ kstrid_metadata, objAtom(metadata) },
{ kstrid_accessors, objAtom(accessors) },
{ kstrid_methods, objAtom(methods) },
{ kstrid_variables, objAtom(variables) },
{ kstrid_constructor, objAtom(constructor) },
};
setpropmulti(o, props, elem_count(props));
return o;
}