diff options
Diffstat (limited to 'runtime/mirror/class.cc')
| -rw-r--r-- | runtime/mirror/class.cc | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/runtime/mirror/class.cc b/runtime/mirror/class.cc index 9246bae4a6..5d730ce0b0 100644 --- a/runtime/mirror/class.cc +++ b/runtime/mirror/class.cc @@ -72,6 +72,42 @@ void Class::VisitRoots(RootVisitor* visitor) { java_lang_Class_.VisitRootIfNonNull(visitor, RootInfo(kRootStickyClass)); } +ObjPtr<mirror::Class> Class::GetPrimitiveClass(ObjPtr<mirror::String> name) { + const char* expected_name = nullptr; + ClassLinker::ClassRoot class_root = ClassLinker::kJavaLangObject; // Invalid. + if (name != nullptr && name->GetLength() >= 2) { + // Perfect hash for the expected values: from the second letters of the primitive types, + // only 'y' has the bit 0x10 set, so use it to change 'b' to 'B'. + char hash = name->CharAt(0) ^ ((name->CharAt(1) & 0x10) << 1); + switch (hash) { + case 'b': expected_name = "boolean"; class_root = ClassLinker::kPrimitiveBoolean; break; + case 'B': expected_name = "byte"; class_root = ClassLinker::kPrimitiveByte; break; + case 'c': expected_name = "char"; class_root = ClassLinker::kPrimitiveChar; break; + case 'd': expected_name = "double"; class_root = ClassLinker::kPrimitiveDouble; break; + case 'f': expected_name = "float"; class_root = ClassLinker::kPrimitiveFloat; break; + case 'i': expected_name = "int"; class_root = ClassLinker::kPrimitiveInt; break; + case 'l': expected_name = "long"; class_root = ClassLinker::kPrimitiveLong; break; + case 's': expected_name = "short"; class_root = ClassLinker::kPrimitiveShort; break; + case 'v': expected_name = "void"; class_root = ClassLinker::kPrimitiveVoid; break; + default: break; + } + } + if (expected_name != nullptr && name->Equals(expected_name)) { + ObjPtr<mirror::Class> klass = Runtime::Current()->GetClassLinker()->GetClassRoot(class_root); + DCHECK(klass != nullptr); + return klass; + } else { + Thread* self = Thread::Current(); + if (name == nullptr) { + // Note: ThrowNullPointerException() requires a message which we deliberately want to omit. + self->ThrowNewException("Ljava/lang/NullPointerException;", /* msg */ nullptr); + } else { + self->ThrowNewException("Ljava/lang/ClassNotFoundException;", name->ToModifiedUtf8().c_str()); + } + return nullptr; + } +} + ClassExt* Class::EnsureExtDataPresent(Thread* self) { ObjPtr<ClassExt> existing(GetExtData()); if (!existing.IsNull()) { |