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ruby--ruby/include/ruby/re.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

34 lines
1.1 KiB
C++

#ifndef RUBY_RE_H /*-*-C++-*-vi:se ft=cpp:*/
#define RUBY_RE_H 1
/**
* @file
* @author $Author$
* @date Thu Sep 30 14:18:32 JST 1993
* @copyright Copyright (C) 1993-2007 Yukihiro Matsumoto
* @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 <sys/types.h>
#include <stdio.h>
#include "ruby/regex.h"
#include "ruby/3/core/rmatch.h"
#include "ruby/3/dllexport.h"
RUBY3_SYMBOL_EXPORT_BEGIN()
VALUE rb_reg_regcomp(VALUE);
long rb_reg_search(VALUE, VALUE, long, int);
VALUE rb_reg_regsub(VALUE, VALUE, struct re_registers *, VALUE);
long rb_reg_adjust_startpos(VALUE, VALUE, long, int);
void rb_match_busy(VALUE);
VALUE rb_reg_quote(VALUE);
regex_t *rb_reg_prepare_re(VALUE re, VALUE str);
int rb_reg_region_copy(struct re_registers *, const struct re_registers *);
RUBY3_SYMBOL_EXPORT_END()
#endif /* RUBY_RE_H */