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GTLDefines.h
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144 lines (123 loc) · 4.33 KB
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/* Copyright (c) 2011 Google Inc.
*
* 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.
*/
//
// GTLDefines.h
//
// Ensure Apple's conditionals we depend on are defined.
#import <TargetConditionals.h>
#import <AvailabilityMacros.h>
//
// The developer may choose to define these in the project:
//
// #define GTL_TARGET_NAMESPACE Xxx // preface all GTL class names with Xxx (recommended for building plug-ins)
// #define GTL_FOUNDATION_ONLY 1 // builds without AppKit or Carbon (default for iPhone builds)
// #define STRIP_GTM_FETCH_LOGGING 1 // omit http logging code (default for iPhone release builds)
//
// Mac developers may find GTL_SIMPLE_DESCRIPTIONS and STRIP_GTM_FETCH_LOGGING useful for
// reducing code size.
//
// Define later OS versions when building on earlier versions
#ifdef MAC_OS_X_VERSION_10_0
#ifndef MAC_OS_X_VERSION_10_6
#define MAC_OS_X_VERSION_10_6 1060
#endif
#endif
#ifdef GTL_TARGET_NAMESPACE
// prefix all GTL class names with GTL_TARGET_NAMESPACE for this target
#import "GTLTargetNamespace.h"
#endif
// Provide a common definition for externing constants/functions
#if defined(__cplusplus)
#define GTL_EXTERN extern "C"
#else
#define GTL_EXTERN extern
#endif
#if TARGET_OS_IPHONE // iPhone SDK
#define GTL_IPHONE 1
#endif
#if GTL_IPHONE
#define GTL_FOUNDATION_ONLY 1
#endif
//
// GTL_ASSERT is like NSAssert, but takes a variable number of arguments:
//
// GTL_ASSERT(condition, @"Problem in argument %@", argStr);
//
// GTL_DEBUG_ASSERT is similar, but compiles in only for debug builds
//
#ifndef GTL_ASSERT
// we directly invoke the NSAssert handler so we can pass on the varargs
#if !defined(NS_BLOCK_ASSERTIONS)
#define GTL_ASSERT(condition, ...) \
do { \
if (!(condition)) { \
[[NSAssertionHandler currentHandler] \
handleFailureInFunction:[NSString stringWithUTF8String:__PRETTY_FUNCTION__] \
file:[NSString stringWithUTF8String:__FILE__] \
lineNumber:__LINE__ \
description:__VA_ARGS__]; \
} \
} while(0)
#else
#define GTL_ASSERT(condition, ...) do { } while (0)
#endif // !defined(NS_BLOCK_ASSERTIONS)
#endif // GTL_ASSERT
#ifndef GTL_DEBUG_ASSERT
#if DEBUG
#define GTL_DEBUG_ASSERT(condition, ...) GTL_ASSERT(condition, __VA_ARGS__)
#else
#define GTL_DEBUG_ASSERT(condition, ...) do { } while (0)
#endif
#endif
#ifndef GTL_DEBUG_LOG
#if DEBUG
#define GTL_DEBUG_LOG(...) NSLog(__VA_ARGS__)
#else
#define GTL_DEBUG_LOG(...) do { } while (0)
#endif
#endif
#ifndef STRIP_GTM_FETCH_LOGGING
#if GTL_IPHONE && !DEBUG
#define STRIP_GTM_FETCH_LOGGING 1
#else
#define STRIP_GTM_FETCH_LOGGING 0
#endif
#endif
// Some support for advanced clang static analysis functionality
// See http://clang-analyzer.llvm.org/annotations.html
#ifndef __has_feature // Optional.
#define __has_feature(x) 0 // Compatibility with non-clang compilers.
#endif
#ifndef NS_RETURNS_NOT_RETAINED
#if __has_feature(attribute_ns_returns_not_retained)
#define NS_RETURNS_NOT_RETAINED __attribute__((ns_returns_not_retained))
#else
#define NS_RETURNS_NOT_RETAINED
#endif
#endif
#ifndef __has_attribute
#define __has_attribute(x) 0
#endif
#if 1
// We will start using nonnull declarations once the static analyzer seems
// to support it without false positives.
#define GTL_NONNULL(x)
#else
#if __has_attribute(nonnull)
#define GTL_NONNULL(x) __attribute__((nonnull x))
#else
#define GTL_NONNULL(x)
#endif
#endif