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ruby--ruby/internal/eval.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

33 lines
1.2 KiB
C

#ifndef INTERNAL_EVAL_H /*-*-C-*-vi:se ft=c:*/
#define INTERNAL_EVAL_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.
* @brief Internal header for the evaluator.
* @note There also is eval_intern.h, which is evaluator's internal
* header (related to this file, but not the same role).
*/
#include "ruby/ruby.h" /* for ID */
#define id_signo ruby_static_id_signo
#define id_status ruby_static_id_status
/* eval.c */
extern ID ruby_static_id_signo;
extern ID ruby_static_id_status;
VALUE rb_refinement_module_get_refined_class(VALUE module);
void rb_class_modify_check(VALUE);
NORETURN(VALUE rb_f_raise(int argc, VALUE *argv));
/* eval_error.c */
VALUE rb_get_backtrace(VALUE info);
/* eval_jump.c */
void rb_call_end_proc(VALUE data);
void rb_mark_end_proc(void);
#endif /* INTERNAL_EVAL_H */