1 files changed, 135 insertions, 0 deletions
diff --git a/runtime/native/java_lang_Class.cc b/runtime/native/java_lang_Class.cc
new file mode 100644
index 0000000000..a7296996da
--- /dev/null
+++ b/runtime/native/java_lang_Class.cc
@@ -0,0 +1,135 @@
+/*
+ * Copyright (C) 2008 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include "class_linker.h"
+#include "dex_file-inl.h"
+#include "jni_internal.h"
+#include "nth_caller_visitor.h"
+#include "mirror/class-inl.h"
+#include "mirror/class_loader.h"
+#include "mirror/object-inl.h"
+#include "mirror/proxy.h"
+#include "object_utils.h"
+#include "scoped_thread_state_change.h"
+#include "ScopedLocalRef.h"
+#include "ScopedUtfChars.h"
+#include "well_known_classes.h"
+
+namespace art {
+
+static mirror::Class* DecodeClass(const ScopedObjectAccess& soa, jobject java_class)
+    SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
+  mirror::Class* c = soa.Decode<mirror::Class*>(java_class);
+  DCHECK(c != NULL);
+  DCHECK(c->IsClass());
+  // TODO: we could EnsureInitialized here, rather than on every reflective get/set or invoke .
+  // For now, we conservatively preserve the old dalvik behavior. A quick "IsInitialized" check
+  // every time probably doesn't make much difference to reflection performance anyway.
+  return c;
+}
+
+// "name" is in "binary name" format, e.g. "dalvik.system.Debug$1".
+static jclass Class_classForName(JNIEnv* env, jclass, jstring javaName, jboolean initialize, jobject javaLoader) {
+  ScopedObjectAccess soa(env);
+  ScopedUtfChars name(env, javaName);
+  if (name.c_str() == NULL) {
+    return NULL;
+  }
+
+  // We need to validate and convert the name (from x.y.z to x/y/z).  This
+  // is especially handy for array types, since we want to avoid
+  // auto-generating bogus array classes.
+  if (!IsValidBinaryClassName(name.c_str())) {
+    ThrowLocation throw_location = soa.Self()->GetCurrentLocationForThrow();
+    soa.Self()->ThrowNewExceptionF(throw_location, "Ljava/lang/ClassNotFoundException;",
+                                   "Invalid name: %s", name.c_str());
+    return NULL;
+  }
+
+  std::string descriptor(DotToDescriptor(name.c_str()));
+  mirror::ClassLoader* class_loader = soa.Decode<mirror::ClassLoader*>(javaLoader);
+  ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
+  mirror::Class* c = class_linker->FindClass(descriptor.c_str(), class_loader);
+  if (c == NULL) {
+    ScopedLocalRef<jthrowable> cause(env, env->ExceptionOccurred());
+    env->ExceptionClear();
+    jthrowable cnfe = reinterpret_cast<jthrowable>(env->NewObject(WellKnownClasses::java_lang_ClassNotFoundException,
+                                                                  WellKnownClasses::java_lang_ClassNotFoundException_init,
+                                                                  javaName, cause.get()));
+    env->Throw(cnfe);
+    return NULL;
+  }
+  if (initialize) {
+    class_linker->EnsureInitialized(c, true, true);
+  }
+  return soa.AddLocalReference<jclass>(c);
+}
+
+static jint Class_getAnnotationDirectoryOffset(JNIEnv* env, jclass javaClass) {
+  ScopedObjectAccess soa(env);
+  mirror::Class* c = DecodeClass(soa, javaClass);
+  if (c->IsPrimitive() || c->IsArrayClass() || c->IsProxyClass()) {
+    return 0;  // primitive, array and proxy classes don't have class definitions
+  }
+  const DexFile::ClassDef* class_def = ClassHelper(c).GetClassDef();
+  if (class_def == NULL) {
+    return 0;  // not found
+  } else {
+    return class_def->annotations_off_;
+  }
+}
+
+static jobject Class_getDex(JNIEnv* env, jobject javaClass) {
+  ScopedObjectAccess soa(env);
+  mirror::Class* c = DecodeClass(soa, javaClass);
+
+  mirror::DexCache* dex_cache = c->GetDexCache();
+  if (dex_cache == NULL) {
+    return NULL;
+  }
+  const DexFile* dex_file = dex_cache->GetDexFile();
+  if (dex_file == NULL) {
+    return NULL;
+  }
+  return dex_file->GetDexObject(env);
+}
+
+static jstring Class_getNameNative(JNIEnv* env, jobject javaThis) {
+  ScopedObjectAccess soa(env);
+  mirror::Class* c = DecodeClass(soa, javaThis);
+  return soa.AddLocalReference<jstring>(c->ComputeName());
+}
+
+static jobjectArray Class_getProxyInterfaces(JNIEnv* env, jobject javaThis) {
+  ScopedObjectAccess soa(env);
+  mirror::SynthesizedProxyClass* c =
+      down_cast<mirror::SynthesizedProxyClass*>(DecodeClass(soa, javaThis));
+  return soa.AddLocalReference<jobjectArray>(c->GetInterfaces()->Clone(soa.Self()));
+}
+
+static JNINativeMethod gMethods[] = {
+  NATIVE_METHOD(Class, classForName, "(Ljava/lang/String;ZLjava/lang/ClassLoader;)Ljava/lang/Class;"),
+  NATIVE_METHOD(Class, getAnnotationDirectoryOffset, "()I"),
+  NATIVE_METHOD(Class, getDex, "()Lcom/android/dex/Dex;"),
+  NATIVE_METHOD(Class, getNameNative, "()Ljava/lang/String;"),
+  NATIVE_METHOD(Class, getProxyInterfaces, "()[Ljava/lang/Class;"),
+};
+
+void register_java_lang_Class(JNIEnv* env) {
+  REGISTER_NATIVE_METHODS("java/lang/Class");
+}
+
+}  // namespace art