1/* 2 * Copyright (C) 2016 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 "java_lang_reflect_Parameter.h" 18 19#include "android-base/stringprintf.h" 20 21#include "art_method-inl.h" 22#include "common_throws.h" 23#include "dex_file-inl.h" 24#include "dex_file_annotations.h" 25#include "jni_internal.h" 26#include "scoped_fast_native_object_access-inl.h" 27#include "utils.h" 28 29namespace art { 30 31using android::base::StringPrintf; 32 33static jobject Parameter_getAnnotationNative(JNIEnv* env, 34 jclass, 35 jobject javaMethod, 36 jint parameterIndex, 37 jclass annotationType) { 38 ScopedFastNativeObjectAccess soa(env); 39 if (UNLIKELY(javaMethod == nullptr)) { 40 ThrowNullPointerException("javaMethod == null"); 41 return nullptr; 42 } 43 44 ArtMethod* method = ArtMethod::FromReflectedMethod(soa, javaMethod); 45 if (method->IsProxyMethod()) { 46 return nullptr; 47 } 48 49 uint32_t parameter_count = method->GetParameterTypeList()->Size(); 50 if (UNLIKELY(parameterIndex < 0 || static_cast<uint32_t>(parameterIndex) >= parameter_count)) { 51 ThrowIllegalArgumentException( 52 StringPrintf("Illegal parameterIndex %d for %s, parameter_count is %d", 53 parameterIndex, 54 method->PrettyMethod().c_str(), 55 parameter_count).c_str()); 56 return nullptr; 57 } 58 59 StackHandleScope<1> hs(soa.Self()); 60 Handle<mirror::Class> klass(hs.NewHandle(soa.Decode<mirror::Class>(annotationType))); 61 return soa.AddLocalReference<jobject>( 62 annotations::GetAnnotationForMethodParameter(method, parameterIndex, klass)); 63} 64 65static JNINativeMethod gMethods[] = { 66 FAST_NATIVE_METHOD(Parameter, 67 getAnnotationNative, 68 "(Ljava/lang/reflect/Executable;ILjava/lang/Class;)Ljava/lang/annotation/Annotation;"), 69}; 70 71void register_java_lang_reflect_Parameter(JNIEnv* env) { 72 REGISTER_NATIVE_METHODS("java/lang/reflect/Parameter"); 73} 74 75} // namespace art 76