6cca0f244f
As of iOS 13.3.1, apps installed with free developer accounts that contain embedded frameworks fail to launch. To work around this, we now link all dependencies via Cocoapods as static libraries.
70 lines
2.5 KiB
Objective-C
70 lines
2.5 KiB
Objective-C
//
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// GTMMethodCheck.h
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//
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// Copyright 2006-2016 Google Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not
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// use this file except in compliance with the License. You may obtain a copy
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// 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, WITHOUT
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// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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// License for the specific language governing permissions and limitations under
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// the License.
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//
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#import <Foundation/Foundation.h>
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#import <stdio.h>
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#import <sysexits.h>
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/// A macro for enforcing debug time checks to make sure all required methods are linked in
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//
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// When using categories, it can be very easy to forget to include the
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// implementation of a category.
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// Let's say you had a class foo that depended on method bar of class baz, and
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// method bar was implemented as a member of a category.
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// You could add the following code:
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//
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// GTM_METHOD_CHECK(baz, bar)
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//
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// and the code would check to make sure baz was implemented just before main
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// was called. This works for both dynamic libraries, and executables.
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//
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//
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// This is not compiled into release builds.
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#ifdef DEBUG
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// This is the "magic".
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// A) we need a multi layer define here so that the preprocessor expands
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// __LINE__ the way we want it. We need __LINE__ so that each of our
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// GTM_METHOD_CHECKs generates a unique function name.
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#define GTM_METHOD_CHECK(class, method) GTM_METHOD_CHECK_INNER(class, method, __LINE__)
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#define GTM_METHOD_CHECK_INNER(class, method, line) \
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GTM_METHOD_CHECK_INNER_INNER(class, method, line)
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// B) define a function that is called at startup to check that |class| has an
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// implementation for |method| (either a class method or an instance method).
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#define GTM_METHOD_CHECK_INNER_INNER(class, method, line) \
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__attribute__ ((constructor, visibility("hidden"))) \
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static void xxGTMMethodCheckMethod ## class ## line () { \
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@autoreleasepool { \
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if (![class instancesRespondToSelector:@selector(method)] \
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&& ![class respondsToSelector:@selector(method)]) { \
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fprintf(stderr, "%s:%d: error: We need method '%s' to be linked in for class '%s'\n", \
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__FILE__, line, #method, #class); \
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exit(EX_SOFTWARE); \
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} \
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} \
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}
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#else // DEBUG
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// Do nothing in release.
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#define GTM_METHOD_CHECK(class, method)
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#endif // DEBUG
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