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/*
* Copyright (C) 2010 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.
*/
#ifndef SCOPED_PRIMITIVE_ARRAY_H_included
#define SCOPED_PRIMITIVE_ARRAY_H_included
#include "JNIHelp.h"
// ScopedBooleanArray, ScopedByteArray, ScopedCharArray, ScopedDoubleArray, ScopedFloatArray,
// ScopedIntArray, ScopedLongArray, and ScopedShortArray provide convenient read-only access to
// Java arrays from JNI code.
#define INSTANTIATE_SCOPED_PRIMITIVE_ARRAY(PRIMITIVE_TYPE, NAME) \
class Scoped ## NAME ## Array { \
public: \
Scoped ## NAME ## Array(JNIEnv* env, PRIMITIVE_TYPE ## Array javaArray) \
: mEnv(env), mJavaArray(javaArray), mRawArray(NULL) { \
mRawArray = mEnv->Get ## NAME ## ArrayElements(mJavaArray, NULL); \
} \
~Scoped ## NAME ## Array() { \
if (mRawArray) { \
mEnv->Release ## NAME ## ArrayElements(mJavaArray, mRawArray, JNI_ABORT); \
} \
} \
const PRIMITIVE_TYPE* get() const { \
return mRawArray; \
} \
const PRIMITIVE_TYPE& operator[](size_t n) const { \
return mRawArray[n]; \
} \
size_t size() const { \
return mEnv->GetArrayLength(mJavaArray); \
} \
private: \
JNIEnv* mEnv; \
PRIMITIVE_TYPE ## Array mJavaArray; \
PRIMITIVE_TYPE* mRawArray; \
Scoped ## NAME ## Array(const Scoped ## NAME ## Array&); \
void operator=(const Scoped ## NAME ## Array&); \
}
INSTANTIATE_SCOPED_PRIMITIVE_ARRAY(jboolean, Boolean);
INSTANTIATE_SCOPED_PRIMITIVE_ARRAY(jbyte, Byte);
INSTANTIATE_SCOPED_PRIMITIVE_ARRAY(jchar, Char);
INSTANTIATE_SCOPED_PRIMITIVE_ARRAY(jdouble, Double);
INSTANTIATE_SCOPED_PRIMITIVE_ARRAY(jfloat, Float);
INSTANTIATE_SCOPED_PRIMITIVE_ARRAY(jint, Int);
INSTANTIATE_SCOPED_PRIMITIVE_ARRAY(jlong, Long);
INSTANTIATE_SCOPED_PRIMITIVE_ARRAY(jshort, Short);
#undef INSTANTIATE_SCOPED_PRIMITIVE_ARRAY
#endif // SCOPED_PRIMITIVE_ARRAY_H_included
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