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/*
* Copyright 2017 Google
*
* 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.
*/
#import <Foundation/Foundation.h>
NS_ASSUME_NONNULL_BEGIN
// A convenience macro for unimplemented methods. Use as follows:
//
// @throw FSTAbstractMethodException(); // NOLINT
#define FSTAbstractMethodException() \
[NSException exceptionWithName:NSInternalInconsistencyException \
reason:[NSString stringWithFormat:@"You must override %s in a subclass", \
__func__] \
userInfo:nil];
// Declare a weak pointer to the given variable
#define FSTWeakify(var) __weak typeof(var) fstWeakPointerTo##var = var;
// Declare a strong pointer to a variable that's been FSTWeakified. This creates a shadow of the
// original.
#define FSTStrongify(var) \
_Pragma("clang diagnostic push") _Pragma("clang diagnostic ignored \"-Wshadow\"") \
__strong typeof(var) var = fstWeakPointerTo##var; \
_Pragma("clang diagnostic pop")
NS_ASSUME_NONNULL_END
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