84 lines
3.1 KiB
C
84 lines
3.1 KiB
C
/*
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* Copyright (C) 2017 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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/*
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* JNI helper macros.
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*
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* Only intended to be used in the platform.
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*/
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#ifndef NATIVEHELPER_JNI_MACROS_H
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#define NATIVEHELPER_JNI_MACROS_H
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// Intended to construct a JNINativeMethod.
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// (Assumes the C name is the ClassName_JavaMethodName).
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#ifndef NATIVE_METHOD
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#define NATIVE_METHOD(className, functionName, signature) \
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{ #functionName, \
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signature, \
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_NATIVEHELPER_JNI_MACRO_CAST(void*) (className ## _ ## functionName) \
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}
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#endif
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// Intended to construct a JNINativeMethod (when the C name doesn't match the Java name).
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// (Assumes the C name is the ClassName_Identifier).
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#ifndef OVERLOADED_NATIVE_METHOD
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#define OVERLOADED_NATIVE_METHOD(className, functionName, signature, identifier) \
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{ #functionName, \
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signature, \
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_NATIVEHELPER_JNI_MACRO_CAST(void*) (className ## _ ## identifier) \
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}
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#endif
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// Used for methods that are annotated with @FastNative on the managed side.
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// See NATIVE_METHOD for usage.
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#ifndef FAST_NATIVE_METHOD
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#define FAST_NATIVE_METHOD(className, functionName, signature) \
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{ #functionName, \
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signature, \
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_NATIVEHELPER_JNI_MACRO_CAST(void*) (className ## _ ## functionName) \
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}
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#endif
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// Used for methods that are annotated with @FastNative on the managed side,
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// and when the C-name doesn't match the Java-name.
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//
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// See OVERLOADED_NATIVE_METHOD for usage.
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#ifndef OVERLOADED_FAST_NATIVE_METHOD
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#define OVERLOADED_FAST_NATIVE_METHOD(className, functionName, signature, identifier) \
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{ #functionName, \
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signature, \
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_NATIVEHELPER_JNI_MACRO_CAST(void*) (className ## _ ## identifier) \
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}
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#endif
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////////////////////////////////////////////////////////
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// IMPLEMENTATION ONLY.
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// DO NOT USE DIRECTLY.
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////////////////////////////////////////////////////////
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// C-style cast for C, C++-style cast for C++ to avoid warnings/errors.
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#if defined(__cplusplus)
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#define _NATIVEHELPER_JNI_MACRO_CAST(to) \
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reinterpret_cast<to>
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#else
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#define _NATIVEHELPER_JNI_MACRO_CAST(to) \
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(to)
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#endif
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#endif
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