Edge* RecordInfo::CreateEdgeFromOriginalType(const Type* type) {
if (!type)
return nullptr;
// look for "typedef ... iterator;"
if (!isa<ElaboratedType>(type))
return nullptr;
const ElaboratedType* elaboratedType = cast<ElaboratedType>(type);
if (!isa<TypedefType>(elaboratedType->getNamedType()))
return nullptr;
const TypedefType* typedefType =
cast<TypedefType>(elaboratedType->getNamedType());
std::string typeName = typedefType->getDecl()->getNameAsString();
if (!Config::IsIterator(typeName))
return nullptr;
RecordInfo* info =
cache_->Lookup(elaboratedType->getQualifier()->getAsType());
bool on_heap = false;
bool is_unsafe = false;
// Silently handle unknown types; the on-heap collection types will
// have to be in scope for the declaration to compile, though.
if (info) {
is_unsafe = Config::IsGCCollectionWithUnsafeIterator(info->name());
// Don't mark iterator as being on the heap if it is not supported.
on_heap = !is_unsafe && Config::IsGCCollection(info->name());
}
return new Iterator(info, on_heap, is_unsafe);
}
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);
}