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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 "jni_internal.h"
#include "class_linker.h"
#include "object.h"
#include "JniConstants.h" // Last to avoid problems with LOG redefinition.
namespace art {
namespace {
jboolean Class_desiredAssertionStatus(JNIEnv* env, jobject javaThis) {
return JNI_FALSE;
}
jobject Class_getClassLoader(JNIEnv* env, jclass, jobject javaClass) {
Class* c = Decode<Class*>(env, javaClass);
Object* result = reinterpret_cast<Object*>(const_cast<ClassLoader*>(c->GetClassLoader()));
return AddLocalReference<jobject>(env, result);
}
jclass Class_getComponentType(JNIEnv* env, jobject javaThis) {
return AddLocalReference<jclass>(env, Decode<Class*>(env, javaThis)->GetComponentType());
}
jobjectArray Class_getDeclaredClasses(JNIEnv* env, jclass java_lang_Class_class, jclass c, jboolean publicOnly) {
UNIMPLEMENTED(WARNING) << "needs annotations";
return env->NewObjectArray(0, java_lang_Class_class, NULL);
}
jobject Class_getDeclaredConstructorOrMethod(JNIEnv* env, jclass,
jclass jklass, jstring jname, jobjectArray jsignature) {
Class* klass = Decode<Class*>(env, jklass);
DCHECK(klass->IsClass());
String* name = Decode<String*>(env, jname);
DCHECK(name->IsString());
Object* signature_obj = Decode<Object*>(env, jsignature);
DCHECK(signature_obj->IsArrayInstance());
// check that this is a Class[] by checking that component type is Class
// foo->GetClass()->GetClass() is an idiom for getting java.lang.Class from an arbitrary object
DCHECK(signature_obj->GetClass()->GetComponentType() == signature_obj->GetClass()->GetClass());
ObjectArray<Class>* signature = down_cast<ObjectArray<Class>*>(signature_obj);
std::string name_string = name->ToModifiedUtf8();
std::string signature_string;
signature_string += "(";
for (int i = 0; i < signature->GetLength(); i++) {
Class* argument_class = signature->Get(0);
if (argument_class == NULL) {
UNIMPLEMENTED(FATAL) << "throw null pointer exception?";
}
signature_string += argument_class->GetDescriptor()->ToModifiedUtf8();
}
signature_string += ")";
for (size_t i = 0; i < klass->NumVirtualMethods(); ++i) {
Method* method = klass->GetVirtualMethod(i);
if (!method->GetName()->Equals(name)) {
continue;
}
std::string method_signature = method->GetSignature()->ToModifiedUtf8();
if (!StringPiece(method_signature).starts_with(signature_string)) {
continue;
}
return AddLocalReference<jobject>(env, method);
}
for (size_t i = 0; i < klass->NumDirectMethods(); ++i) {
Method* method = klass->GetDirectMethod(i);
if (!method->GetName()->Equals(name)) {
continue;
}
std::string method_signature = method->GetSignature()->ToModifiedUtf8();
if (!StringPiece(method_signature).starts_with(signature_string)) {
continue;
}
return AddLocalReference<jobject>(env, method);
}
return NULL;
}
jobject Class_getDeclaredField(JNIEnv* env, jclass, jclass jklass, jobject jname) {
Class* klass = Decode<Class*>(env, jklass);
DCHECK(klass->IsClass());
String* name = Decode<String*>(env, jname);
DCHECK(name->IsString());
for (size_t i = 0; i < klass->NumVirtualMethods(); ++i) {
Field* f = klass->GetInstanceField(i);
if (f->GetName()->Equals(name)) {
return AddLocalReference<jclass>(env, f);
}
}
for (size_t i = 0; i < klass->NumStaticFields(); ++i) {
Field* f = klass->GetStaticField(i);
if (f->GetName()->Equals(name)) {
return AddLocalReference<jclass>(env, f);
}
}
return NULL;
}
jclass Class_getDeclaringClass(JNIEnv* env, jobject javaThis) {
UNIMPLEMENTED(WARNING) << "needs annotations";
return NULL;
}
jobject Class_getEnclosingConstructor(JNIEnv* env, jobject javaThis) {
UNIMPLEMENTED(WARNING) << "needs annotations";
return NULL;
}
jobject Class_getEnclosingMethod(JNIEnv* env, jobject javaThis) {
UNIMPLEMENTED(WARNING) << "needs annotations";
return NULL;
}
/*
* private native String getNameNative()
*
* Return the class' name. The exact format is bizarre, but it's the specified
* behavior: keywords for primitive types, regular "[I" form for primitive
* arrays (so "int" but "[I"), and arrays of reference types written
* between "L" and ";" but with dots rather than slashes (so "java.lang.String"
* but "[Ljava.lang.String;"). Madness.
*/
jstring Class_getNameNative(JNIEnv* env, jobject javaThis) {
Class* c = Decode<Class*>(env, javaThis);
std::string descriptor(c->GetDescriptor()->ToModifiedUtf8());
if ((descriptor[0] != 'L') && (descriptor[0] != '[')) {
// The descriptor indicates that this is the class for
// a primitive type; special-case the return value.
const char* name = NULL;
switch (descriptor[0]) {
case 'Z': name = "boolean"; break;
case 'B': name = "byte"; break;
case 'C': name = "char"; break;
case 'S': name = "short"; break;
case 'I': name = "int"; break;
case 'J': name = "long"; break;
case 'F': name = "float"; break;
case 'D': name = "double"; break;
case 'V': name = "void"; break;
default:
LOG(FATAL) << "Unknown primitive type: " << PrintableChar(descriptor[0]);
}
return env->NewStringUTF(name);
}
// Convert the UTF-8 name to a java.lang.String. The
// name must use '.' to separate package components.
if (descriptor.size() > 2 && descriptor[0] == 'L' && descriptor[descriptor.size() - 1] == ';') {
descriptor.erase(0, 1);
descriptor.erase(descriptor.size() - 1);
}
std::replace(descriptor.begin(), descriptor.end(), '/', '.');
return env->NewStringUTF(descriptor.c_str());
}
jclass Class_getSuperclass(JNIEnv* env, jobject javaThis) {
Class* c = Decode<Class*>(env, javaThis);
Class* result = c->GetSuperClass();
return AddLocalReference<jclass>(env, result);
}
jboolean Class_isAnonymousClass(JNIEnv* env, jobject javaThis) {
UNIMPLEMENTED(WARNING) << "needs annotations";
return JNI_FALSE;
}
jboolean Class_isInterface(JNIEnv* env, jobject javaThis) {
Class* c = Decode<Class*>(env, javaThis);
return c->IsInterface();
}
jboolean Class_isPrimitive(JNIEnv* env, jobject javaThis) {
Class* c = Decode<Class*>(env, javaThis);
return c->IsPrimitive();
}
static JNINativeMethod gMethods[] = {
//NATIVE_METHOD(Class, classForName, "(Ljava/lang/String;ZLjava/lang/ClassLoader;)Ljava/lang/Class;"),
NATIVE_METHOD(Class, desiredAssertionStatus, "()Z"),
NATIVE_METHOD(Class, getClassLoader, "(Ljava/lang/Class;)Ljava/lang/ClassLoader;"),
NATIVE_METHOD(Class, getComponentType, "()Ljava/lang/Class;"),
//NATIVE_METHOD(Class, getDeclaredAnnotation, "(Ljava/lang/Class;)Ljava/lang/annotation/Annotation;"),
//NATIVE_METHOD(Class, getDeclaredAnnotations, "()[Ljava/lang/annotation/Annotation;"),
NATIVE_METHOD(Class, getDeclaredClasses, "(Ljava/lang/Class;Z)[Ljava/lang/Class;"),
NATIVE_METHOD(Class, getDeclaredConstructorOrMethod, "(Ljava/lang/Class;Ljava/lang/String;[Ljava/lang/Class;)Ljava/lang/reflect/Member;"),
//NATIVE_METHOD(Class, getDeclaredConstructors, "(Ljava/lang/Class;Z)[Ljava/lang/reflect/Constructor;"),
NATIVE_METHOD(Class, getDeclaredField, "(Ljava/lang/Class;Ljava/lang/String;)Ljava/lang/reflect/Field;"),
//NATIVE_METHOD(Class, getDeclaredFields, "(Ljava/lang/Class;Z)[Ljava/lang/reflect/Field;"),
//NATIVE_METHOD(Class, getDeclaredMethods, "(Ljava/lang/Class;Z)[Ljava/lang/reflect/Method;"),
NATIVE_METHOD(Class, getDeclaringClass, "()Ljava/lang/Class;"),
//NATIVE_METHOD(Class, getEnclosingClass, "()Ljava/lang/Class;"),
NATIVE_METHOD(Class, getEnclosingConstructor, "()Ljava/lang/reflect/Constructor;"),
NATIVE_METHOD(Class, getEnclosingMethod, "()Ljava/lang/reflect/Method;"),
//NATIVE_METHOD(Class, getInnerClassName, "()Ljava/lang/String;"),
//NATIVE_METHOD(Class, getInterfaces, "()[Ljava/lang/Class;"),
//NATIVE_METHOD(Class, getModifiers, "(Ljava/lang/Class;Z)I"),
NATIVE_METHOD(Class, getNameNative, "()Ljava/lang/String;"),
//NATIVE_METHOD(Class, getSignatureAnnotation, "()[Ljava/lang/Object;"),
NATIVE_METHOD(Class, getSuperclass, "()Ljava/lang/Class;"),
NATIVE_METHOD(Class, isAnonymousClass, "()Z"),
//NATIVE_METHOD(Class, isAssignableFrom, "(Ljava/lang/Class;)Z"),
//NATIVE_METHOD(Class, isDeclaredAnnotationPresent, "(Ljava/lang/Class;)Z"),
//NATIVE_METHOD(Class, isInstance, "(Ljava/lang/Object;)Z"),
NATIVE_METHOD(Class, isInterface, "()Z"),
NATIVE_METHOD(Class, isPrimitive, "()Z"),
//NATIVE_METHOD(Class, newInstanceImpl, "()Ljava/lang/Object;"),
};
} // namespace
void register_java_lang_Class(JNIEnv* env) {
jniRegisterNativeMethods(env, "java/lang/Class", gMethods, NELEM(gMethods));
}
} // namespace art
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