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 "common_throws.h"
19 #include "dex_file-inl.h"
20 #include "jni_internal.h"
21 #include "mirror/class-inl.h"
22 #include "mirror/object-inl.h"
23 #include "object_utils.h"
24 #include "scoped_thread_state_change.h"
25 #include "sirt_ref.h"
26
27 namespace art {
28
Array_createMultiArray(JNIEnv * env,jclass,jclass javaElementClass,jobject javaDimArray)29 static jobject Array_createMultiArray(JNIEnv* env, jclass, jclass javaElementClass, jobject javaDimArray) {
30 ScopedObjectAccess soa(env);
31 DCHECK(javaElementClass != NULL);
32 mirror::Class* element_class = soa.Decode<mirror::Class*>(javaElementClass);
33 DCHECK(element_class->IsClass());
34 DCHECK(javaDimArray != NULL);
35 mirror::Object* dimensions_obj = soa.Decode<mirror::Object*>(javaDimArray);
36 DCHECK(dimensions_obj->IsArrayInstance());
37 DCHECK_STREQ(ClassHelper(dimensions_obj->GetClass()).GetDescriptor(), "[I");
38 mirror::IntArray* dimensions_array = down_cast<mirror::IntArray*>(dimensions_obj);
39 mirror::Array* new_array = mirror::Array::CreateMultiArray(soa.Self(), element_class, dimensions_array);
40 return soa.AddLocalReference<jobject>(new_array);
41 }
42
Array_createObjectArray(JNIEnv * env,jclass,jclass javaElementClass,jint length)43 static jobject Array_createObjectArray(JNIEnv* env, jclass, jclass javaElementClass, jint length) {
44 ScopedObjectAccess soa(env);
45 DCHECK(javaElementClass != NULL);
46 mirror::Class* element_class = soa.Decode<mirror::Class*>(javaElementClass);
47 if (UNLIKELY(length < 0)) {
48 ThrowNegativeArraySizeException(length);
49 return NULL;
50 }
51 std::string descriptor("[");
52 descriptor += ClassHelper(element_class).GetDescriptor();
53
54 ClassLinker* class_linker = Runtime::Current()->GetClassLinker();
55 mirror::Class* array_class = class_linker->FindClass(descriptor.c_str(), element_class->GetClassLoader());
56 if (UNLIKELY(array_class == NULL)) {
57 CHECK(soa.Self()->IsExceptionPending());
58 return NULL;
59 }
60 DCHECK(array_class->IsArrayClass());
61 mirror::Array* new_array = mirror::Array::Alloc(soa.Self(), array_class, length);
62 return soa.AddLocalReference<jobject>(new_array);
63 }
64
65 static JNINativeMethod gMethods[] = {
66 NATIVE_METHOD(Array, createMultiArray, "(Ljava/lang/Class;[I)Ljava/lang/Object;"),
67 NATIVE_METHOD(Array, createObjectArray, "(Ljava/lang/Class;I)Ljava/lang/Object;"),
68 };
69
register_java_lang_reflect_Array(JNIEnv * env)70 void register_java_lang_reflect_Array(JNIEnv* env) {
71 REGISTER_NATIVE_METHODS("java/lang/reflect/Array");
72 }
73
74 } // namespace art
75