You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
113 lines
4.2 KiB
113 lines
4.2 KiB
/*
|
|
* Copyright (C) 2016 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_Parameter.h"
|
|
|
|
#include "android-base/stringprintf.h"
|
|
#include "nativehelper/jni_macros.h"
|
|
|
|
#include "art_method-inl.h"
|
|
#include "base/utils.h"
|
|
#include "common_throws.h"
|
|
#include "dex/dex_file-inl.h"
|
|
#include "dex/dex_file_annotations.h"
|
|
#include "jni/jni_internal.h"
|
|
#include "native_util.h"
|
|
#include "scoped_fast_native_object_access-inl.h"
|
|
|
|
namespace art {
|
|
|
|
using android::base::StringPrintf;
|
|
|
|
static jobject Parameter_getAnnotationNative(JNIEnv* env,
|
|
jclass,
|
|
jobject javaMethod,
|
|
jint parameterIndex,
|
|
jclass annotationType) {
|
|
ScopedFastNativeObjectAccess soa(env);
|
|
if (UNLIKELY(javaMethod == nullptr)) {
|
|
ThrowNullPointerException("javaMethod == null");
|
|
return nullptr;
|
|
}
|
|
|
|
ArtMethod* method = ArtMethod::FromReflectedMethod(soa, javaMethod);
|
|
if (method->IsProxyMethod()) {
|
|
return nullptr;
|
|
}
|
|
|
|
uint32_t parameter_count = method->GetParameterTypeList()->Size();
|
|
if (UNLIKELY(parameterIndex < 0 || static_cast<uint32_t>(parameterIndex) >= parameter_count)) {
|
|
ThrowIllegalArgumentException(
|
|
StringPrintf("Illegal parameterIndex %d for %s, parameter_count is %d",
|
|
parameterIndex,
|
|
method->PrettyMethod().c_str(),
|
|
parameter_count).c_str());
|
|
return nullptr;
|
|
}
|
|
|
|
uint32_t annotated_parameter_count = annotations::GetNumberOfAnnotatedMethodParameters(method);
|
|
if (annotated_parameter_count == 0u) {
|
|
return nullptr;
|
|
}
|
|
|
|
// For constructors with implicit arguments, we may need to adjust
|
|
// annotation positions based on whether the implicit parameters are
|
|
// expected to known and not just a compiler implementation detail.
|
|
if (method->IsConstructor()) {
|
|
StackHandleScope<1> hs(soa.Self());
|
|
// If declaring class is a local or an enum, do not pad parameter
|
|
// annotations, as the implicit constructor parameters are an
|
|
// implementation detail rather than required by JLS.
|
|
Handle<mirror::Class> declaring_class = hs.NewHandle(method->GetDeclaringClass());
|
|
if (annotations::GetEnclosingMethod(declaring_class) == nullptr && !declaring_class->IsEnum()) {
|
|
// Adjust the parameter index if the number of annotations does
|
|
// not match the number of parameters.
|
|
if (annotated_parameter_count <= parameter_count) {
|
|
// Workaround for dexer not inserting annotation state for implicit parameters (b/68033708).
|
|
uint32_t skip_count = parameter_count - annotated_parameter_count;
|
|
DCHECK_GE(2u, skip_count);
|
|
if (parameterIndex < static_cast<jint>(skip_count)) {
|
|
return nullptr;
|
|
}
|
|
parameterIndex -= skip_count;
|
|
} else {
|
|
// Workaround for Jack erroneously inserting implicit parameter for local classes
|
|
// (b/68033708).
|
|
DCHECK_EQ(1u, annotated_parameter_count - parameter_count);
|
|
parameterIndex += static_cast<jint>(annotated_parameter_count - parameter_count);
|
|
}
|
|
}
|
|
}
|
|
|
|
StackHandleScope<1> hs(soa.Self());
|
|
Handle<mirror::Class> klass(hs.NewHandle(soa.Decode<mirror::Class>(annotationType)));
|
|
return soa.AddLocalReference<jobject>(
|
|
annotations::GetAnnotationForMethodParameter(method, parameterIndex, klass));
|
|
}
|
|
|
|
static JNINativeMethod gMethods[] = {
|
|
FAST_NATIVE_METHOD(
|
|
Parameter,
|
|
getAnnotationNative,
|
|
"(Ljava/lang/reflect/Executable;ILjava/lang/Class;)Ljava/lang/annotation/Annotation;"),
|
|
};
|
|
|
|
void register_java_lang_reflect_Parameter(JNIEnv* env) {
|
|
REGISTER_NATIVE_METHODS("java/lang/reflect/Parameter");
|
|
}
|
|
|
|
} // namespace art
|