Allow ruby versions 3.2 and 3.4 for installation
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168
libs/libruby/ruby/internal/core/rregexp.h
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168
libs/libruby/ruby/internal/core/rregexp.h
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#ifndef RBIMPL_RREGEXP_H /*-*-C++-*-vi:se ft=cpp:*/
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#define RBIMPL_RREGEXP_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 `RBIMPL` or `rbimpl` 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 Defines struct ::RRegexp.
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*/
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#include "ruby/internal/attr/artificial.h"
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#include "ruby/internal/attr/pure.h"
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#include "ruby/internal/cast.h"
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#include "ruby/internal/core/rbasic.h"
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#include "ruby/internal/core/rstring.h"
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#include "ruby/internal/value.h"
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#include "ruby/internal/value_type.h"
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/**
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* Convenient casting macro.
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*
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* @param obj An object, which is in fact an ::RRegexp.
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* @return The passed object casted to ::RRegexp.
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*/
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#define RREGEXP(obj) RBIMPL_CAST((struct RRegexp *)(obj))
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/**
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* Convenient accessor macro.
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*
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* @param obj An object, which is in fact an ::RRegexp.
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* @return The passed object's pattern buffer.
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*/
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#define RREGEXP_PTR(obj) (RREGEXP(obj)->ptr)
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/** @cond INTERNAL_MACRO */
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#define RREGEXP_SRC RREGEXP_SRC
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#define RREGEXP_SRC_PTR RREGEXP_SRC_PTR
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#define RREGEXP_SRC_LEN RREGEXP_SRC_LEN
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#define RREGEXP_SRC_END RREGEXP_SRC_END
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/** @endcond */
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struct re_patter_buffer; /* a.k.a. OnigRegexType, defined in onigmo.h */
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/**
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* Ruby's regular expression. A regexp is compiled into its own intermediate
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* representation. This one holds that info. Regexp "match" operation then
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* executes that IR.
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*/
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struct RRegexp {
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/** Basic part, including flags and class. */
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struct RBasic basic;
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/**
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* The pattern buffer. This is a quasi-opaque struct that holds compiled
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* intermediate representation of the regular expression.
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*
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* @note Compilation of a regexp could be delayed until actual match.
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*/
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struct re_pattern_buffer *ptr;
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/** Source code of this expression. */
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const VALUE src;
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/**
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* Reference count. A regexp match can take extraordinarily long time to
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* run. Ruby's regular expression is heavily extended and not a regular
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* language any longer; runs in NP-time in practice. Now, Ruby also has
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* threads and GVL. In order to prevent long GVL lockup, our regexp engine
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* can release it on occasions. This means that multiple threads can touch
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* a regular expressions at once. That itself is okay. But their cleanup
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* phase shall wait for all the concurrent runs, to prevent use-after-free
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* situation. This field is used to count such threads that are executing
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* this particular pattern buffer.
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*
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* @warning Of course, touching this field from extension libraries causes
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* catastrophic effects. Just leave it.
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*/
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unsigned long usecnt;
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};
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RBIMPL_ATTR_PURE_UNLESS_DEBUG()
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RBIMPL_ATTR_ARTIFICIAL()
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/**
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* Convenient getter function.
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*
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* @param[in] rexp The regular expression in question.
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* @return The source code of the regular expression.
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* @pre `rexp` must be of ::RRegexp.
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*/
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static inline VALUE
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RREGEXP_SRC(VALUE rexp)
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{
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RBIMPL_ASSERT_TYPE(rexp, RUBY_T_REGEXP);
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VALUE ret = RREGEXP(rexp)->src;
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RBIMPL_ASSERT_TYPE(ret, RUBY_T_STRING);
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return ret;
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}
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RBIMPL_ATTR_PURE_UNLESS_DEBUG()
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RBIMPL_ATTR_ARTIFICIAL()
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/**
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* Convenient getter function.
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*
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* @param[in] rexp The regular expression in question.
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* @return The source code of the regular expression, in C's string.
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* @pre `rexp` must be of ::RRegexp.
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*
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* @internal
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*
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* It seems nobody uses this function in the wild. Subject to hide?
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*/
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static inline char *
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RREGEXP_SRC_PTR(VALUE rexp)
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{
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return RSTRING_PTR(RREGEXP_SRC(rexp));
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}
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RBIMPL_ATTR_PURE_UNLESS_DEBUG()
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RBIMPL_ATTR_ARTIFICIAL()
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/**
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* Convenient getter function.
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*
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* @param[in] rexp The regular expression in question.
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* @return The length of the source code of the regular expression.
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* @pre `rexp` must be of ::RRegexp.
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*
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* @internal
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*
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* It seems nobody uses this function in the wild. Subject to hide?
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*/
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static inline long
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RREGEXP_SRC_LEN(VALUE rexp)
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{
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return RSTRING_LEN(RREGEXP_SRC(rexp));
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}
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RBIMPL_ATTR_PURE_UNLESS_DEBUG()
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RBIMPL_ATTR_ARTIFICIAL()
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/**
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* Convenient getter function.
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*
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* @param[in] rexp The regular expression in question.
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* @return The end of the source code of the regular expression.
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* @pre `rexp` must be of ::RRegexp.
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*
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* @internal
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*
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* It seems nobody uses this function in the wild. Subject to hide?
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*/
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static inline char *
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RREGEXP_SRC_END(VALUE rexp)
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{
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return RSTRING_END(RREGEXP_SRC(rexp));
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}
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#endif /* RBIMPL_RREGEXP_H */
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