242 lines
9.2 KiB
C
242 lines
9.2 KiB
C
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//
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// GTMDefines.h
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//
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// Copyright 2008 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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// ============================================================================
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#include <AvailabilityMacros.h>
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#include <TargetConditionals.h>
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// Not all MAC_OS_X_VERSION_10_X macros defined in past SDKs
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#ifndef MAC_OS_X_VERSION_10_5
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#define MAC_OS_X_VERSION_10_5 1050
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#endif
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#ifndef MAC_OS_X_VERSION_10_6
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#define MAC_OS_X_VERSION_10_6 1060
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#endif
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// ----------------------------------------------------------------------------
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// CPP symbols that can be overridden in a prefix to control how the toolbox
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// is compiled.
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// ----------------------------------------------------------------------------
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// By setting the GTM_CONTAINERS_VALIDATION_FAILED_LOG and
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// GTM_CONTAINERS_VALIDATION_FAILED_ASSERT macros you can control what happens
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// when a validation fails. If you implement your own validators, you may want
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// to control their internals using the same macros for consistency.
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#ifndef GTM_CONTAINERS_VALIDATION_FAILED_ASSERT
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#define GTM_CONTAINERS_VALIDATION_FAILED_ASSERT 0
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#endif
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// Give ourselves a consistent way to do inlines. Apple's macros even use
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// a few different actual definitions, so we're based off of the foundation
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// one.
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#if !defined(GTM_INLINE)
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#if defined (__GNUC__) && (__GNUC__ == 4)
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#define GTM_INLINE static __inline__ __attribute__((always_inline))
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#else
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#define GTM_INLINE static __inline__
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#endif
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#endif
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// Give ourselves a consistent way of doing externs that links up nicely
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// when mixing objc and objc++
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#if !defined (GTM_EXTERN)
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#if defined __cplusplus
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#define GTM_EXTERN extern "C"
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#else
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#define GTM_EXTERN extern
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#endif
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#endif
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// Give ourselves a consistent way of exporting things if we have visibility
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// set to hidden.
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#if !defined (GTM_EXPORT)
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#define GTM_EXPORT __attribute__((visibility("default")))
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#endif
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// _GTMDevLog & _GTMDevAssert
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//
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// _GTMDevLog & _GTMDevAssert are meant to be a very lightweight shell for
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// developer level errors. This implementation simply macros to NSLog/NSAssert.
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// It is not intended to be a general logging/reporting system.
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//
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// Please see http://code.google.com/p/google-toolbox-for-mac/wiki/DevLogNAssert
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// for a little more background on the usage of these macros.
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//
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// _GTMDevLog log some error/problem in debug builds
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// _GTMDevAssert assert if conditon isn't met w/in a method/function
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// in all builds.
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//
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// To replace this system, just provide different macro definitions in your
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// prefix header. Remember, any implementation you provide *must* be thread
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// safe since this could be called by anything in what ever situtation it has
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// been placed in.
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//
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// We only define the simple macros if nothing else has defined this.
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#ifndef _GTMDevLog
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#ifdef DEBUG
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#define _GTMDevLog(...) NSLog(__VA_ARGS__)
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#else
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#define _GTMDevLog(...) do { } while (0)
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#endif
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#endif // _GTMDevLog
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// Declared here so that it can easily be used for logging tracking if
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// necessary. See GTMUnitTestDevLog.h for details.
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@class NSString;
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GTM_EXTERN void _GTMUnitTestDevLog(NSString *format, ...);
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#ifndef _GTMDevAssert
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// we directly invoke the NSAssert handler so we can pass on the varargs
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// (NSAssert doesn't have a macro we can use that takes varargs)
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#if !defined(NS_BLOCK_ASSERTIONS)
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#define _GTMDevAssert(condition, ...) \
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do { \
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if (!(condition)) { \
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[[NSAssertionHandler currentHandler] \
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handleFailureInFunction:[NSString stringWithUTF8String:__PRETTY_FUNCTION__] \
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file:[NSString stringWithUTF8String:__FILE__] \
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lineNumber:__LINE__ \
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description:__VA_ARGS__]; \
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} \
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} while(0)
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#else // !defined(NS_BLOCK_ASSERTIONS)
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#define _GTMDevAssert(condition, ...) do { } while (0)
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#endif // !defined(NS_BLOCK_ASSERTIONS)
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#endif // _GTMDevAssert
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// _GTMCompileAssert
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// _GTMCompileAssert is an assert that is meant to fire at compile time if you
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// want to check things at compile instead of runtime. For example if you
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// want to check that a wchar is 4 bytes instead of 2 you would use
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// _GTMCompileAssert(sizeof(wchar_t) == 4, wchar_t_is_4_bytes_on_OS_X)
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// Note that the second "arg" is not in quotes, and must be a valid processor
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// symbol in it's own right (no spaces, punctuation etc).
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// Wrapping this in an #ifndef allows external groups to define their own
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// compile time assert scheme.
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#ifndef _GTMCompileAssert
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// We got this technique from here:
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// http://unixjunkie.blogspot.com/2007/10/better-compile-time-asserts_29.html
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#define _GTMCompileAssertSymbolInner(line, msg) _GTMCOMPILEASSERT ## line ## __ ## msg
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#define _GTMCompileAssertSymbol(line, msg) _GTMCompileAssertSymbolInner(line, msg)
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#define _GTMCompileAssert(test, msg) \
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typedef char _GTMCompileAssertSymbol(__LINE__, msg) [ ((test) ? 1 : -1) ]
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#endif // _GTMCompileAssert
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// Macro to allow fast enumeration when building for 10.5 or later, and
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// reliance on NSEnumerator for 10.4. Remember, NSDictionary w/ FastEnumeration
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// does keys, so pick the right thing, nothing is done on the FastEnumeration
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// side to be sure you're getting what you wanted.
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#ifndef GTM_FOREACH_OBJECT
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#if TARGET_OS_IPHONE || (MAC_OS_X_VERSION_MIN_REQUIRED >= MAC_OS_X_VERSION_10_5)
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#define GTM_FOREACH_OBJECT(element, collection) \
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for (element in collection)
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#define GTM_FOREACH_KEY(element, collection) \
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for (element in collection)
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#else
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#define GTM_FOREACH_OBJECT(element, collection) \
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for (NSEnumerator * _ ## element ## _enum = [collection objectEnumerator]; \
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(element = [_ ## element ## _enum nextObject]) != nil; )
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#define GTM_FOREACH_KEY(element, collection) \
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for (NSEnumerator * _ ## element ## _enum = [collection keyEnumerator]; \
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(element = [_ ## element ## _enum nextObject]) != nil; )
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#endif
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#endif
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// ============================================================================
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// ----------------------------------------------------------------------------
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// CPP symbols defined based on the project settings so the GTM code has
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// simple things to test against w/o scattering the knowledge of project
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// setting through all the code.
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// ----------------------------------------------------------------------------
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// Provide a single constant CPP symbol that all of GTM uses for ifdefing
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// iPhone code.
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#if TARGET_OS_IPHONE // iPhone SDK
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// For iPhone specific stuff
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#define GTM_IPHONE_SDK 1
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#if TARGET_IPHONE_SIMULATOR
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#define GTM_IPHONE_SIMULATOR 1
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#else
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#define GTM_IPHONE_DEVICE 1
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#endif // TARGET_IPHONE_SIMULATOR
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#else
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// For MacOS specific stuff
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#define GTM_MACOS_SDK 1
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#endif
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// Provide a symbol to include/exclude extra code for GC support. (This mainly
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// just controls the inclusion of finalize methods).
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#ifndef GTM_SUPPORT_GC
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#if GTM_IPHONE_SDK
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// iPhone never needs GC
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#define GTM_SUPPORT_GC 0
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#else
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// We can't find a symbol to tell if GC is supported/required, so best we
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// do on Mac targets is include it if we're on 10.5 or later.
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#if MAC_OS_X_VERSION_MAX_ALLOWED <= MAC_OS_X_VERSION_10_4
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#define GTM_SUPPORT_GC 0
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#else
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#define GTM_SUPPORT_GC 1
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#endif
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#endif
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#endif
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// To simplify support for 64bit (and Leopard in general), we provide the type
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// defines for non Leopard SDKs
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#if MAC_OS_X_VERSION_MAX_ALLOWED <= MAC_OS_X_VERSION_10_4
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// NSInteger/NSUInteger and Max/Mins
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#ifndef NSINTEGER_DEFINED
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#if __LP64__ || NS_BUILD_32_LIKE_64
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typedef long NSInteger;
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typedef unsigned long NSUInteger;
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#else
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typedef int NSInteger;
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typedef unsigned int NSUInteger;
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#endif
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#define NSIntegerMax LONG_MAX
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#define NSIntegerMin LONG_MIN
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#define NSUIntegerMax ULONG_MAX
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#define NSINTEGER_DEFINED 1
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#endif // NSINTEGER_DEFINED
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// CGFloat
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#ifndef CGFLOAT_DEFINED
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#if defined(__LP64__) && __LP64__
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// This really is an untested path (64bit on Tiger?)
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typedef double CGFloat;
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#define CGFLOAT_MIN DBL_MIN
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#define CGFLOAT_MAX DBL_MAX
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#define CGFLOAT_IS_DOUBLE 1
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#else /* !defined(__LP64__) || !__LP64__ */
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typedef float CGFloat;
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#define CGFLOAT_MIN FLT_MIN
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#define CGFLOAT_MAX FLT_MAX
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#define CGFLOAT_IS_DOUBLE 0
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#endif /* !defined(__LP64__) || !__LP64__ */
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#define CGFLOAT_DEFINED 1
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#endif // CGFLOAT_DEFINED
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#endif // MAC_OS_X_VERSION_MAX_ALLOWED <= MAC_OS_X_VERSION_10_4
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