86 lines
3.1 KiB
C++
86 lines
3.1 KiB
C++
/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "class_linker.h"
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#include "jni_internal.h"
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#include "mirror/art_method.h"
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#include "mirror/art_method-inl.h"
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#include "mirror/class-inl.h"
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#include "mirror/object-inl.h"
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#include "reflection.h"
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#include "scoped_fast_native_object_access.h"
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#include "well_known_classes.h"
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namespace art {
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/*
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* We get here through Constructor.newInstance(). The Constructor object
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* would not be available if the constructor weren't public (per the
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* definition of Class.getConstructor), so we can skip the method access
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* check. We can also safely assume the constructor isn't associated
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* with an interface, array, or primitive class.
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*/
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static jobject Constructor_newInstance(JNIEnv* env, jobject javaMethod, jobjectArray javaArgs,
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jboolean accessible) {
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ScopedFastNativeObjectAccess soa(env);
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mirror::ArtMethod* m = mirror::ArtMethod::FromReflectedMethod(soa, javaMethod);
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StackHandleScope<1> hs(soa.Self());
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Handle<mirror::Class> c(hs.NewHandle(m->GetDeclaringClass()));
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if (UNLIKELY(c->IsAbstract())) {
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ThrowLocation throw_location = soa.Self()->GetCurrentLocationForThrow();
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soa.Self()->ThrowNewExceptionF(throw_location, "Ljava/lang/InstantiationException;",
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"Can't instantiate %s %s",
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c->IsInterface() ? "interface" : "abstract class",
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PrettyDescriptor(c.Get()).c_str());
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return nullptr;
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}
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if (!Runtime::Current()->GetClassLinker()->EnsureInitialized(c, true, true)) {
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DCHECK(soa.Self()->IsExceptionPending());
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return nullptr;
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}
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bool movable = true;
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if (!kMovingMethods && c->IsArtMethodClass()) {
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movable = false;
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} else if (!kMovingFields && c->IsArtFieldClass()) {
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movable = false;
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} else if (!kMovingClasses && c->IsClassClass()) {
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movable = false;
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}
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mirror::Object* receiver =
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movable ? c->AllocObject(soa.Self()) : c->AllocNonMovableObject(soa.Self());
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if (receiver == nullptr) {
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return nullptr;
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}
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jobject javaReceiver = soa.AddLocalReference<jobject>(receiver);
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InvokeMethod(soa, javaMethod, javaReceiver, javaArgs, (accessible == JNI_TRUE));
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// Constructors are ()V methods, so we shouldn't touch the result of InvokeMethod.
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return javaReceiver;
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}
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static JNINativeMethod gMethods[] = {
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NATIVE_METHOD(Constructor, newInstance, "!([Ljava/lang/Object;Z)Ljava/lang/Object;"),
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};
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void register_java_lang_reflect_Constructor(JNIEnv* env) {
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REGISTER_NATIVE_METHODS("java/lang/reflect/Constructor");
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}
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} // namespace art
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