RecordInfo::Bases* RecordInfo::CollectBases() {
// Compute the collection locally to avoid inconsistent states.
Bases* bases = new Bases;
if (!record_->hasDefinition())
return bases;
for (CXXRecordDecl::base_class_iterator it = record_->bases_begin();
it != record_->bases_end();
++it) {
const CXXBaseSpecifier& spec = *it;
RecordInfo* info = cache_->Lookup(spec.getType());
if (!info)
continue;
CXXRecordDecl* base = info->record();
TracingStatus status = info->InheritsTrace()
? TracingStatus::Needed()
: TracingStatus::Unneeded();
bases->insert(std::make_pair(base, BasePoint(spec, info, status)));
}
return bases;
}
void BlinkGCPluginConsumer::CheckTracingMethod(CXXMethodDecl* method) {
RecordInfo* parent = cache_.Lookup(method->getParent());
if (IsIgnored(parent))
return;
// Check templated tracing methods by checking the template instantiations.
// Specialized templates are handled as ordinary classes.
if (ClassTemplateDecl* tmpl =
parent->record()->getDescribedClassTemplate()) {
for (ClassTemplateDecl::spec_iterator it = tmpl->spec_begin();
it != tmpl->spec_end();
++it) {
// Check trace using each template instantiation as the holder.
if (Config::IsTemplateInstantiation(*it))
CheckTraceOrDispatchMethod(cache_.Lookup(*it), method);
}
return;
}
CheckTraceOrDispatchMethod(parent, method);
}
Edge* RecordInfo::CreateEdge(const Type* type) {
if (!type) {
return 0;
}
if (type->isPointerType() || type->isReferenceType()) {
if (Edge* ptr = CreateEdge(type->getPointeeType().getTypePtrOrNull()))
return new RawPtr(ptr, false, type->isReferenceType());
return 0;
}
RecordInfo* info = cache_->Lookup(type);
// If the type is neither a pointer or a C++ record we ignore it.
if (!info) {
return 0;
}
TemplateArgs args;
if (Config::IsRawPtr(info->name()) && info->GetTemplateArgs(1, &args)) {
if (Edge* ptr = CreateEdge(args[0]))
return new RawPtr(ptr, true, false);
return 0;
}
if (Config::IsRefPtr(info->name()) && info->GetTemplateArgs(1, &args)) {
if (Edge* ptr = CreateEdge(args[0]))
return new RefPtr(ptr);
return 0;
}
if (Config::IsOwnPtr(info->name()) && info->GetTemplateArgs(1, &args)) {
if (Edge* ptr = CreateEdge(args[0]))
return new OwnPtr(ptr);
return 0;
}
if (Config::IsMember(info->name()) && info->GetTemplateArgs(1, &args)) {
if (Edge* ptr = CreateEdge(args[0]))
return new Member(ptr);
return 0;
}
if (Config::IsWeakMember(info->name()) && info->GetTemplateArgs(1, &args)) {
if (Edge* ptr = CreateEdge(args[0]))
return new WeakMember(ptr);
return 0;
}
if (Config::IsPersistent(info->name())) {
// Persistent might refer to v8::Persistent, so check the name space.
// TODO: Consider using a more canonical identification than names.
NamespaceDecl* ns =
dyn_cast<NamespaceDecl>(info->record()->getDeclContext());
if (!ns || ns->getName() != "blink")
return 0;
if (!info->GetTemplateArgs(1, &args))
return 0;
if (Edge* ptr = CreateEdge(args[0]))
return new Persistent(ptr);
return 0;
}
if (Config::IsGCCollection(info->name()) ||
Config::IsWTFCollection(info->name())) {
bool is_root = Config::IsPersistentGCCollection(info->name());
bool on_heap = is_root || info->IsHeapAllocatedCollection();
size_t count = Config::CollectionDimension(info->name());
if (!info->GetTemplateArgs(count, &args))
return 0;
Collection* edge = new Collection(info, on_heap, is_root);
for (TemplateArgs::iterator it = args.begin(); it != args.end(); ++it) {
if (Edge* member = CreateEdge(*it)) {
edge->members().push_back(member);
}
// TODO: Handle the case where we fail to create an edge (eg, if the
// argument is a primitive type or just not fully known yet).
}
return edge;
}
return new Value(info);
}
Edge* RecordInfo::CreateEdge(const Type* type) {
if (!type) {
return 0;
}
if (type->isPointerType()) {
if (Edge* ptr = CreateEdge(type->getPointeeType().getTypePtrOrNull()))
return new RawPtr(ptr);
return 0;
}
RecordInfo* info = cache_->Lookup(type);
// If the type is neither a pointer or a C++ record we ignore it.
if (!info) {
return 0;
}
TemplateArgs args;
if (Config::IsRawPtr(info->name()) && info->GetTemplateArgs(1, &args)) {
if (Edge* ptr = CreateEdge(args[0]))
return new RawPtr(ptr);
return 0;
}
if (Config::IsRefPtr(info->name()) && info->GetTemplateArgs(1, &args)) {
if (Edge* ptr = CreateEdge(args[0]))
return new RefPtr(ptr);
return 0;
}
if (Config::IsOwnPtr(info->name()) && info->GetTemplateArgs(1, &args)) {
if (Edge* ptr = CreateEdge(args[0]))
return new OwnPtr(ptr);
return 0;
}
if (Config::IsMember(info->name()) && info->GetTemplateArgs(1, &args)) {
if (Edge* ptr = CreateEdge(args[0]))
return new Member(ptr);
return 0;
}
if (Config::IsWeakMember(info->name()) && info->GetTemplateArgs(1, &args)) {
if (Edge* ptr = CreateEdge(args[0]))
return new WeakMember(ptr);
return 0;
}
if (Config::IsPersistent(info->name())) {
// Persistent might refer to v8::Persistent, so check the name space.
// TODO: Consider using a more canonical identification than names.
NamespaceDecl* ns =
dyn_cast<NamespaceDecl>(info->record()->getDeclContext());
if (!ns || ns->getName() != "WebCore")
return 0;
if (!info->GetTemplateArgs(1, &args))
return 0;
if (Edge* ptr = CreateEdge(args[0]))
return new Persistent(ptr);
return 0;
}
if (Config::IsGCCollection(info->name()) ||
Config::IsWTFCollection(info->name())) {
bool is_root = Config::IsPersistentGCCollection(info->name());
bool on_heap = is_root || info->IsHeapAllocatedCollection();
size_t count = Config::CollectionDimension(info->name());
if (!info->GetTemplateArgs(count, &args))
return 0;
Collection* edge = new Collection(info, on_heap, is_root);
for (TemplateArgs::iterator it = args.begin(); it != args.end(); ++it) {
if (Edge* member = CreateEdge(*it)) {
edge->members().push_back(member);
} else {
// We failed to create an edge so abort the entire edge construction.
delete edge; // Will delete the already allocated members.
return 0;
}
}
return edge;
}
return new Value(info);
}
