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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
74 lines
3.3 KiB
C++
74 lines
3.3 KiB
C++
#ifndef RUBY3_ERROR_H /*-*-C++-*-vi:se ft=cpp:*/
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#define RUBY3_ERROR_H
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/**
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* @file
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* @author Ruby developers <ruby-core@ruby-lang.org>
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* @copyright This file is a part of the programming language Ruby.
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* Permission is hereby granted, to either redistribute and/or
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* modify this file, provided that the conditions mentioned in the
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* file COPYING are met. Consult the file for details.
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* @warning Symbols prefixed with either `RUBY3` or `ruby3` are
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* implementation details. Don't take them as canon. They could
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* rapidly appear then vanish. The name (path) of this header file
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* is also an implementation detail. Do not expect it to persist
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* at the place it is now. Developers are free to move it anywhere
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* anytime at will.
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* @note To ruby-core: remember that this header can be possibly
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* recursively included from extension libraries written in C++.
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* Do not expect for instance `__VA_ARGS__` is always available.
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* We assume C99 for ruby itself but we don't assume languages of
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* extension libraries. They could be written in C++98.
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* @brief Declares ::rb_raise().
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*/
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#include "ruby/3/dllexport.h"
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#include "ruby/3/value.h"
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#include "ruby/backward/2/attributes.h"
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RUBY3_SYMBOL_EXPORT_BEGIN()
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VALUE rb_errinfo(void);
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void rb_set_errinfo(VALUE);
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/* for rb_readwrite_sys_fail first argument */
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enum rb_io_wait_readwrite {RB_IO_WAIT_READABLE, RB_IO_WAIT_WRITABLE};
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#define RB_IO_WAIT_READABLE RB_IO_WAIT_READABLE
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#define RB_IO_WAIT_WRITABLE RB_IO_WAIT_WRITABLE
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PRINTF_ARGS(NORETURN(void rb_raise(VALUE, const char*, ...)), 2, 3);
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PRINTF_ARGS(NORETURN(void rb_fatal(const char*, ...)), 1, 2);
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COLDFUNC PRINTF_ARGS(NORETURN(void rb_bug(const char*, ...)), 1, 2);
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NORETURN(void rb_bug_errno(const char*, int));
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NORETURN(void rb_sys_fail(const char*));
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NORETURN(void rb_sys_fail_str(VALUE));
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NORETURN(void rb_mod_sys_fail(VALUE, const char*));
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NORETURN(void rb_mod_sys_fail_str(VALUE, VALUE));
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NORETURN(void rb_readwrite_sys_fail(enum rb_io_wait_readwrite, const char*));
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NORETURN(void rb_iter_break(void));
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NORETURN(void rb_iter_break_value(VALUE));
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NORETURN(void rb_exit(int));
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NORETURN(void rb_notimplement(void));
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VALUE rb_syserr_new(int, const char *);
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VALUE rb_syserr_new_str(int n, VALUE arg);
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NORETURN(void rb_syserr_fail(int, const char*));
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NORETURN(void rb_syserr_fail_str(int, VALUE));
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NORETURN(void rb_mod_syserr_fail(VALUE, int, const char*));
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NORETURN(void rb_mod_syserr_fail_str(VALUE, int, VALUE));
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NORETURN(void rb_readwrite_syserr_fail(enum rb_io_wait_readwrite, int, const char*));
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NORETURN(void rb_unexpected_type(VALUE,int));
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VALUE *rb_ruby_verbose_ptr(void);
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VALUE *rb_ruby_debug_ptr(void);
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#define ruby_verbose (*rb_ruby_verbose_ptr())
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#define ruby_debug (*rb_ruby_debug_ptr())
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/* reports if `-W' specified */
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PRINTF_ARGS(void rb_warning(const char*, ...), 1, 2);
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PRINTF_ARGS(void rb_compile_warning(const char *, int, const char*, ...), 3, 4);
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PRINTF_ARGS(void rb_sys_warning(const char*, ...), 1, 2);
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/* reports always */
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COLDFUNC PRINTF_ARGS(void rb_warn(const char*, ...), 1, 2);
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PRINTF_ARGS(void rb_compile_warn(const char *, int, const char*, ...), 3, 4);
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RUBY3_SYMBOL_EXPORT_END()
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#endif /* RUBY3_ERROR_H */
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