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https://github.com/Mauler125/r5sdk.git
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b3a68ed095
DirtySDK (EA's Dirty Sockets library) will be used for the LiveAPI implementation, and depends on: EABase, EAThread.
100 lines
3.2 KiB
C
100 lines
3.2 KiB
C
/*-----------------------------------------------------------------------------
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* eastdarg.h
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*
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* Copyright (c) Electronic Arts Inc. All rights reserved.
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*---------------------------------------------------------------------------*/
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#ifndef INCLUDED_eastdarg_H
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#define INCLUDED_eastdarg_H
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#include <EABase/eabase.h>
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#include <stdarg.h>
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// VA_ARG_COUNT
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//
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// Returns the number of arguments passed to a macro's ... argument.
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// This applies to macros only and not functions.
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//
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// Example usage:
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// assert(VA_ARG_COUNT() == 0);
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// assert(VA_ARG_COUNT(a) == 1);
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// assert(VA_ARG_COUNT(a, b) == 2);
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// assert(VA_ARG_COUNT(a, b, c) == 3);
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//
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#if !defined(VA_ARG_COUNT)
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#define VA_ARG_COUNT(...) VA_ARG_COUNT_II((VA_ARG_COUNT_PREFIX_ ## __VA_ARGS__ ## _VA_ARG_COUNT_POSTFIX,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0))
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#define VA_ARG_COUNT_II(__args) VA_ARG_COUNT_I __args
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#define VA_ARG_COUNT_PREFIX__VA_ARG_COUNT_POSTFIX ,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,0
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#define VA_ARG_COUNT_I(_0,_1,_2,_3,_4,_5,_6,_7,_8,_9,_10,_11,_12,_13,_14,_15,_16,_17,_18,_19,_20,_21,_22,_23,_24,_25,_26,_27,_28,_29,_30,_31,N,...) N
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#endif
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// va_copy
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//
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// va_copy is required by C++11
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// C++11 and C99 require va_copy to be #defined and implemented.
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// http://en.cppreference.com/w/cpp/utility/variadic/va_copy
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//
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// Example usage:
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// void Func(char* p, ...){
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// va_list args, argsCopy;
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// va_start(args, p);
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// va_copy(argsCopy, args);
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// (use args)
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// (use argsCopy, which acts the same as args)
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// va_end(args);
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// va_end(argsCopy);
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// }
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//
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#ifndef va_copy
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#if defined(__va_copy) // GCC and others define this for non-C99 compatibility.
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#define va_copy(dest, src) __va_copy((dest), (src))
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#else
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// This may not work for some platforms, depending on their ABI.
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// It works for Microsoft x86,x64, and PowerPC-based platforms.
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#define va_copy(dest, src) memcpy(&(dest), &(src), sizeof(va_list))
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#endif
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#endif
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// va_list_reference
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//
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// va_list_reference is not part of the C or C++ standards.
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// It allows you to pass a va_list by reference to another
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// function instead of by value. You cannot simply use va_list&
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// as that won't work with many va_list implementations because
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// they are implemented as arrays (which can't be passed by
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// reference to a function without decaying to a pointer).
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//
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// Example usage:
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// void Test(va_list_reference args){
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// printf("%d", va_arg(args, int));
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// }
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// void Func(char* p, ...){
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// va_list args;
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// va_start(args, p);
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// Test(args); // Upon return args will be modified.
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// va_end(args);
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// }
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#ifndef va_list_reference
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#if defined(EA_PLATFORM_MICROSOFT) || (EA_PLATFORM_PTR_SIZE == 4) || (defined(EA_PLATFORM_APPLE) && defined(EA_PROCESSOR_ARM64)) || defined(EA_PLATFORM_NX) || (defined(EA_PLATFORM_ANDROID) && defined(EA_PROCESSOR_ARM64))
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// This is required for platform ABIs in which va_list is a struct or pointer.
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#define va_list_reference va_list&
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#else
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// This is required for platform ABIs in which va_list is defined to be an array.
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#define va_list_reference va_list
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#endif
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#endif
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#endif /* Header include guard */
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