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ruby--ruby/include/ruby/internal/arithmetic/st_data_t.h

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sed -i s/RUBY3/RBIMPL/g Devs do not love "3". The only exception is RUBY3_KEYWORDS in parse.y, which seems unrelated to our interests.
2020-05-04 02:52:56 -04:00
#ifndef RBIMPL_ARITHMERIC_ST_DATA_T_H /*-*-C++-*-vi:se ft=cpp:*/
#define RBIMPL_ARITHMERIC_ST_DATA_T_H
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
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/**
Merge pull request #2991 from shyouhei/ruby.h Split ruby.h
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* @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.
sed -i s/ruby3/rbimpl/g
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* @warning Symbols prefixed with either `RBIMPL` or `rbimpl` are
Merge pull request #2991 from shyouhei/ruby.h Split ruby.h
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* 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 Arithmetic conversion between C's `st_data_t` and Ruby's.
*/
sed -i 's|ruby/impl|ruby/internal|' To fix build failures.
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#include "ruby/internal/arithmetic/fixnum.h"
#include "ruby/internal/arithmetic/long.h"
#include "ruby/internal/attr/artificial.h"
#include "ruby/internal/attr/const.h"
#include "ruby/internal/attr/constexpr.h"
#include "ruby/internal/cast.h"
#include "ruby/internal/value.h"
Merge pull request #2991 from shyouhei/ruby.h Split ruby.h
2020-04-08 00:28:13 -04:00
#include "ruby/assert.h"
#include "ruby/st.h"
#define ST2FIX RB_ST2FIX
/** @cond INTERNAL_MACRO */
#define RB_ST2FIX RB_ST2FIX
/** @endcond */
Use RUBY_DEBUG instead of NDEBUG Assertions in header files slows down an interpreter, so they should be turned off by default (simple `make`). To enable them, define a macro `RUBY_DEBUG=1` (e.g. `make cppflags=-DRUBY_DEBUG` or use `#define` at the very beggining of the file. Note that even if `NDEBUG=1` is defined, `RUBY_DEBUG=1` enables all assertions. [Feature #16837] related: https://github.com/ruby/ruby/pull/3120 `assert()` lines in MRI *.c is not disabled even if `RUBY_DEBUG=0` and it can be disabled with `NDEBUG=1`. So please consider to use `RUBY_ASSERT()` if you want to disable them when `RUBY_DEBUG=0`.
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RBIMPL_ATTR_CONST_UNLESS_DEBUG()
RBIMPL_ATTR_CONSTEXPR_UNLESS_DEBUG(CXX14)
sed -i s/RUBY3/RBIMPL/g Devs do not love "3". The only exception is RUBY3_KEYWORDS in parse.y, which seems unrelated to our interests.
2020-05-04 02:52:56 -04:00
RBIMPL_ATTR_ARTIFICIAL()
Merge pull request #2991 from shyouhei/ruby.h Split ruby.h
2020-04-08 00:28:13 -04:00
/* See also [ruby-core:84395] [Bug #14218] [ruby-core:82687] [Bug #13877] */
static inline VALUE
RB_ST2FIX(st_data_t i)
{
SIGNED_VALUE x = i;
if (x >= 0) {
x &= RUBY_FIXNUM_MAX;
}
else {
x |= RUBY_FIXNUM_MIN;
}
sed -i s/RUBY3/RBIMPL/g Devs do not love "3". The only exception is RUBY3_KEYWORDS in parse.y, which seems unrelated to our interests.
2020-05-04 02:52:56 -04:00
RBIMPL_ASSERT_OR_ASSUME(RB_FIXABLE(x));
unsigned long y = RBIMPL_CAST((unsigned long)x);
Merge pull request #2991 from shyouhei/ruby.h Split ruby.h
2020-04-08 00:28:13 -04:00
return RB_LONG2FIX(y);
}
sed -i s/RUBY3/RBIMPL/g Devs do not love "3". The only exception is RUBY3_KEYWORDS in parse.y, which seems unrelated to our interests.
2020-05-04 02:52:56 -04:00
#endif /* RBIMPL_ARITHMERIC_ST_DATA_T_H */
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