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ruby--ruby/include/ruby/intern.h
卜部昌平 4ff3f20540 add #include guard hack
According to MSVC manual (*1), cl.exe can skip including a header file
when that:

- contains #pragma once, or
- starts with #ifndef, or
- starts with #if ! defined.

GCC has a similar trick (*2), but it acts more stricter (e. g. there
must be _no tokens_ outside of #ifndef...#endif).

Sun C lacked #pragma once for a looong time.  Oracle Developer Studio
12.5 finally implemented it, but we cannot assume such recent version.

This changeset modifies header files so that each of them include
strictly one #ifndef...#endif.  I believe this is the most portable way
to trigger compiler optimizations. [Bug #16770]

*1: https://docs.microsoft.com/en-us/cpp/preprocessor/once
*2: https://gcc.gnu.org/onlinedocs/cppinternals/Guard-Macros.html
2020-04-13 16:06:00 +09:00

68 lines
2.1 KiB
C++

#ifndef RUBY_INTERN_H /*-*-C++-*-vi:se ft=cpp:*/
#define RUBY_INTERN_H 1
/**
* @file
* @author $Author$
* @date Thu Jun 10 14:22:17 JST 1993
* @copyright Copyright (C) 1993-2007 Yukihiro Matsumoto
* @copyright Copyright (C) 2000 Network Applied Communication Laboratory, Inc.
* @copyright Copyright (C) 2000 Information-technology Promotion Agency, Japan
* @copyright This file is a part of the programming language Ruby.
* Permission is hereby granted, to either redistribute and/or
* modify this file, provided that the conditions mentioned in the
* file COPYING are met. Consult the file for details.
*/
#include "ruby/3/config.h"
#include "ruby/defines.h"
#ifdef HAVE_STDARG_PROTOTYPES
# include <stdarg.h>
#else
# include <varargs.h>
#endif
#include "ruby/st.h"
/*
* Functions and variables that are used by more than one source file of
* the kernel.
*/
#include "ruby/3/intern/array.h"
#include "ruby/3/intern/bignum.h"
#include "ruby/3/intern/class.h"
#include "ruby/3/intern/compar.h"
#include "ruby/3/intern/complex.h"
#include "ruby/3/intern/cont.h"
#include "ruby/3/intern/dir.h"
#include "ruby/3/intern/enum.h"
#include "ruby/3/intern/enumerator.h"
#include "ruby/3/intern/error.h"
#include "ruby/3/intern/eval.h"
#include "ruby/3/intern/file.h"
#include "ruby/3/intern/gc.h"
#include "ruby/3/intern/hash.h"
#include "ruby/3/intern/io.h"
#include "ruby/3/intern/load.h"
#include "ruby/3/intern/marshal.h"
#include "ruby/3/intern/numeric.h"
#include "ruby/3/intern/object.h"
#include "ruby/3/intern/parse.h"
#include "ruby/3/intern/proc.h"
#include "ruby/3/intern/process.h"
#include "ruby/3/intern/random.h"
#include "ruby/3/intern/range.h"
#include "ruby/3/intern/rational.h"
#include "ruby/3/intern/re.h"
#include "ruby/3/intern/ruby.h"
#include "ruby/3/intern/select.h"
#include "ruby/3/intern/signal.h"
#include "ruby/3/intern/sprintf.h"
#include "ruby/3/intern/string.h"
#include "ruby/3/intern/struct.h"
#include "ruby/3/intern/thread.h"
#include "ruby/3/intern/time.h"
#include "ruby/3/intern/variable.h"
#include "ruby/3/intern/vm.h"
#endif /* RUBY_INTERN_H */