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/*
* 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_Constructor.h"
#include "class_linker.h"
#include "jni_internal.h"
#include "mirror/art_method.h"
#include "mirror/art_method-inl.h"
#include "mirror/class-inl.h"
#include "mirror/object-inl.h"
#include "reflection.h"
#include "scoped_fast_native_object_access.h"
#include "well_known_classes.h"
namespace art {
/*
* We get here through Constructor.newInstance(). The Constructor object
* would not be available if the constructor weren't public (per the
* definition of Class.getConstructor), so we can skip the method access
* check. We can also safely assume the constructor isn't associated
* with an interface, array, or primitive class.
*/
static jobject Constructor_newInstance(JNIEnv* env, jobject javaMethod, jobjectArray javaArgs,
jboolean accessible) {
ScopedFastNativeObjectAccess soa(env);
mirror::ArtMethod* m = mirror::ArtMethod::FromReflectedMethod(soa, javaMethod);
StackHandleScope<1> hs(soa.Self());
Handle<mirror::Class> c(hs.NewHandle(m->GetDeclaringClass()));
if (UNLIKELY(c->IsAbstract())) {
ThrowLocation throw_location = soa.Self()->GetCurrentLocationForThrow();
soa.Self()->ThrowNewExceptionF(throw_location, "Ljava/lang/InstantiationException;",
"Can't instantiate %s %s",
c->IsInterface() ? "interface" : "abstract class",
PrettyDescriptor(c.Get()).c_str());
return nullptr;
}
if (!Runtime::Current()->GetClassLinker()->EnsureInitialized(soa.Self(), c, true, true)) {
DCHECK(soa.Self()->IsExceptionPending());
return nullptr;
}
bool movable = true;
if (!kMovingMethods && c->IsArtMethodClass()) {
movable = false;
} else if (!kMovingFields && c->IsArtFieldClass()) {
movable = false;
} else if (!kMovingClasses && c->IsClassClass()) {
movable = false;
}
mirror::Object* receiver =
movable ? c->AllocObject(soa.Self()) : c->AllocNonMovableObject(soa.Self());
if (receiver == nullptr) {
return nullptr;
}
jobject javaReceiver = soa.AddLocalReference<jobject>(receiver);
InvokeMethod(soa, javaMethod, javaReceiver, javaArgs, (accessible == JNI_TRUE));
// Constructors are ()V methods, so we shouldn't touch the result of InvokeMethod.
return javaReceiver;
}
static JNINativeMethod gMethods[] = {
NATIVE_METHOD(Constructor, newInstance, "!([Ljava/lang/Object;Z)Ljava/lang/Object;"),
};
void register_java_lang_reflect_Constructor(JNIEnv* env) {
REGISTER_NATIVE_METHODS("java/lang/reflect/Constructor");
}
} // namespace art
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