mirror of
https://github.com/ruby/ruby.git
synced 2022-11-09 12:17:21 -05:00
4ff3f20540
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
35 lines
1.7 KiB
C++
35 lines
1.7 KiB
C++
#ifndef RUBY3_GLOB_H /*-*-C++-*-vi:se ft=cpp:*/
|
|
#define RUBY3_GLOB_H
|
|
/**
|
|
* @file
|
|
* @author Ruby developers <ruby-core@ruby-lang.org>
|
|
* @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.
|
|
* @warning Symbols prefixed with either `RUBY3` or `ruby3` are
|
|
* implementation details. Don't take them as canon. They could
|
|
* rapidly appear then vanish. The name (path) of this header file
|
|
* is also an implementation detail. Do not expect it to persist
|
|
* at the place it is now. Developers are free to move it anywhere
|
|
* anytime at will.
|
|
* @note To ruby-core: remember that this header can be possibly
|
|
* recursively included from extension libraries written in C++.
|
|
* Do not expect for instance `__VA_ARGS__` is always available.
|
|
* We assume C99 for ruby itself but we don't assume languages of
|
|
* extension libraries. They could be written in C++98.
|
|
* @brief Declares ::rb_glob().
|
|
*/
|
|
#include "ruby/3/dllexport.h"
|
|
#include "ruby/3/value.h"
|
|
|
|
RUBY3_SYMBOL_EXPORT_BEGIN()
|
|
|
|
typedef int ruby_glob_func(const char*,VALUE, void*);
|
|
void rb_glob(const char*,void(*)(const char*,VALUE,void*),VALUE);
|
|
int ruby_glob(const char*,int,ruby_glob_func*,VALUE);
|
|
int ruby_brace_glob(const char*,int,ruby_glob_func*,VALUE);
|
|
|
|
RUBY3_SYMBOL_EXPORT_END()
|
|
|
|
#endif /* RUBY3_GLOB_H */
|