text: /*
   * 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 "java_lang_reflect_Array.h"
  
  #include "nativehelper/jni_macros.h"
  
  #include "class_linker-inl.h"
  #include "common_throws.h"
  #include "dex/dex_file-inl.h"
  #include "handle_scope-inl.h"
  #include "jni_internal.h"
  #include "mirror/class-inl.h"
  #include "mirror/object-inl.h"
  #include "native_util.h"
  #include "scoped_fast_native_object_access-inl.h"
  
  namespace art {
  
  static jobject Array_createMultiArray(
      JNIEnv* env, jclass, jclass javaElementClass, jintArray javaDimArray) {
    ScopedFastNativeObjectAccess soa(env);
    DCHECK(javaElementClass != nullptr);
    StackHandleScope<2> hs(soa.Self());
    Handle<mirror::Class> element_class(hs.NewHandle(soa.Decode<mirror::Class>(javaElementClass)));
    DCHECK(element_class->IsClass());
    DCHECK(javaDimArray != nullptr);
    ObjPtr<mirror::Object> dimensions_obj = soa.Decode<mirror::Object>(javaDimArray);
    DCHECK(dimensions_obj->IsArrayInstance());
    DCHECK_EQ(dimensions_obj->GetClass()->GetComponentType()->GetPrimitiveType(),
              Primitive::kPrimInt);
    Handle<mirror::IntArray> dimensions_array(
        hs.NewHandle(ObjPtr<mirror::IntArray>::DownCast(dimensions_obj)));
    mirror::Array* new_array = mirror::Array::CreateMultiArray(soa.Self(),
                                                               element_class,
                                                               dimensions_array);
    return soa.AddLocalReference<jobject>(new_array);
  }
  
  static jobject Array_createObjectArray(JNIEnv* env, jclass, jclass javaElementClass, jint length) {
    ScopedFastNativeObjectAccess soa(env);
    DCHECK(javaElementClass != nullptr);
    if (UNLIKELY(length < 0)) {
      ThrowNegativeArraySizeException(length);
      return nullptr;
    }
    ObjPtr<mirror::Class> element_class = soa.Decode<mirror::Class>(javaElementClass);
    Runtime* runtime = Runtime::Current();
    ClassLinker* class_linker = runtime->GetClassLinker();
    ObjPtr<mirror::Class> array_class = class_linker->FindArrayClass(soa.Self(), &element_class);
    if (UNLIKELY(array_class == nullptr)) {
      CHECK(soa.Self()->IsExceptionPending());
      return nullptr;
    }
    DCHECK(array_class->IsObjectArrayClass());
    ObjPtr<mirror::Array> new_array = mirror::ObjectArray<mirror::Object*>::Alloc(
        soa.Self(),
        array_class,
        length,
        runtime->GetHeap()->GetCurrentAllocator());
    return soa.AddLocalReference<jobject>(new_array);
  }
  
  static JNINativeMethod gMethods[] = {
    FAST_NATIVE_METHOD(Array, createMultiArray, "(Ljava/lang/Class;[I)Ljava/lang/Object;"),
    FAST_NATIVE_METHOD(Array, createObjectArray, "(Ljava/lang/Class;I)Ljava/lang/Object;"),
  };
  
  void register_java_lang_reflect_Array(JNIEnv* env) {
    REGISTER_NATIVE_METHODS("java/lang/reflect/Array");
  }
  
  }  // namespace art
  