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      1 /*
      2  * Copyright (C) 2008 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 #include "class_linker.h"
     18 #include "jni_internal.h"
     19 #include "mirror/art_method.h"
     20 #include "mirror/art_method-inl.h"
     21 #include "mirror/class-inl.h"
     22 #include "mirror/object-inl.h"
     23 #include "mirror/object_array-inl.h"
     24 #include "reflection.h"
     25 #include "scoped_fast_native_object_access.h"
     26 #include "well_known_classes.h"
     27 
     28 namespace art {
     29 
     30 static jobject Method_invoke(JNIEnv* env, jobject javaMethod, jobject javaReceiver,
     31                              jobject javaArgs, jboolean accessible) {
     32   ScopedFastNativeObjectAccess soa(env);
     33   return InvokeMethod(soa, javaMethod, javaReceiver, javaArgs, (accessible == JNI_TRUE));
     34 }
     35 
     36 static jobject Method_getExceptionTypesNative(JNIEnv* env, jobject javaMethod) {
     37   ScopedFastNativeObjectAccess soa(env);
     38   mirror::ArtMethod* proxy_method = mirror::ArtMethod::FromReflectedMethod(soa, javaMethod);
     39   CHECK(proxy_method->GetDeclaringClass()->IsProxyClass());
     40   mirror::Class* proxy_class = proxy_method->GetDeclaringClass();
     41   int throws_index = -1;
     42   size_t num_virt_methods = proxy_class->NumVirtualMethods();
     43   for (size_t i = 0; i < num_virt_methods; i++) {
     44     if (proxy_class->GetVirtualMethod(i) == proxy_method) {
     45       throws_index = i;
     46       break;
     47     }
     48   }
     49   CHECK_NE(throws_index, -1);
     50   mirror::ObjectArray<mirror::Class>* declared_exceptions =
     51           proxy_class->GetThrows()->Get(throws_index);
     52   return soa.AddLocalReference<jobject>(declared_exceptions->Clone(soa.Self()));
     53 }
     54 
     55 static JNINativeMethod gMethods[] = {
     56   NATIVE_METHOD(Method, invoke, "!(Ljava/lang/Object;[Ljava/lang/Object;Z)Ljava/lang/Object;"),
     57   NATIVE_METHOD(Method, getExceptionTypesNative, "!()[Ljava/lang/Class;"),
     58 };
     59 
     60 void register_java_lang_reflect_Method(JNIEnv* env) {
     61   REGISTER_NATIVE_METHODS("java/lang/reflect/Method");
     62 }
     63 
     64 }  // namespace art
     65