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Edit File : re.h \| Size : 8.52 KB
#ifndef RBIMPL_INTERN_RE_H /--C++--vi:se ft=cpp:/ #define RBIMPL_INTERN_RE_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 `RBIMPL` or `rbimpl` 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 Public APIs related to ::rb_cRegexp. / #include "ruby/internal/attr/nonnull.h" #include "ruby/internal/dllexport.h" #include "ruby/internal/value.h" RBIMPL_SYMBOL_EXPORT_BEGIN() / re.c / /* * @deprecated This macro once was a thing in the old days, but makes no sense * any longer today. Exists here for backwards compatibility * only. You can safely forget about it. * * @internal * * This was a function that switched between memcmp and rb_memcicmp depending * on then-called `ruby_ignorecase`, or the `$=` global variable. That feature * was abandoned in sometime around version 1.9.0. / #define rb_memcmp memcmp /* * Identical to st_locale_insensitive_strcasecmp(), except it is timing safe * and returns something different. * * @param[in] s1 Comparison LHS. * @param[in] s2 Comparison RHS. * @param[in] n Comparison shall stop after first `n` bytes are scanned. * @retval <0 `s1` is "less" than `s2`. * @retval 0 Both sides converted into lowercase would be identical. * @retval >0 `s1` is "greater" than `s2`. * @note The "case" here means that of the POSIX Locale. * * @internal * * Can accept NULLs as long as n is also 0, and returns 0. / int rb_memcicmp(const void s1,const void s2, long n); /* * Asserts that the given MatchData is "occupied". MatchData shares its * backend storages with its Regexp object. But programs can destructively * tamper its contents. Calling this function beforehand shall prevent such * modifications to spill over into other objects. * * @param[out] md Target instance of ::rb_cMatch. * @post The object is "busy". * * @internal * * There is rb_match_unbusy internally, but extension libraries are left unable * to do so. / void rb_match_busy(VALUE md); /* * Identical to rb_reg_nth_match(), except it just returns Boolean. This could * skip allocating a returning string, resulting in reduced memory footprints * if applicable. * * @param[in] n Match index. * @param[in] md An instance of ::rb_cMatch. * @exception rb_eTypeError `md` is not initialised. * @retval RUBY_Qnil There is no `n`-th capture. * @retval RUBY_Qfalse There is a `n`-th capture and is empty. * @retval RUBY_Qtrue There is a `n`-th capture that has something. * / VALUE rb_reg_nth_defined(int n, VALUE md); /* * Queries the nth captured substring. * * @param[in] n Match index. * @param[in] md An instance of ::rb_cMatch. * @exception rb_eTypeError `md` is not initialised. * @retval RUBY_Qnil There is no `n`-th capture. * @retval otherwise An allocated instance of ::rb_cString containing * the contents captured. / VALUE rb_reg_nth_match(int n, VALUE md); /* * Queries the index of the given named capture. Captures could be named. But * that doesn't mean named ones are not indexed. A regular expression can mix * named and non-named captures, and they are all indexed. This function * converts from a name to its index. * * @param[in] match An instance of ::rb_cMatch. * @param[in] backref Capture name, in String, Symbol, or Numeric. * @exception rb_eIndexError No such named capture. * @return The index of the given name. / int rb_reg_backref_number(VALUE match, VALUE backref); /* * This just returns the argument, stringified. What a poor name. * * @param[in] md An instance of ::rb_cMatch. * @return Its 0th capture (i.e. entire matched string). / VALUE rb_reg_last_match(VALUE md); /* * The portion of the original string before the given match. * * @param[in] md An instance of ::rb_cMatch. * @return Its "prematch". This is perl's ``$```. / VALUE rb_reg_match_pre(VALUE md); /* * The portion of the original string after the given match. * * @param[in] md An instance of ::rb_cMatch. * @return Its "postmatch". This is perl's `$'`. / VALUE rb_reg_match_post(VALUE md); /* * The portion of the original string that captured at the very last. * * @param[in] md An instance of ::rb_cMatch. * @return Its "lastmatch". This is perl's `$+`. / VALUE rb_reg_match_last(VALUE md); /* * @private * * @deprecated This macro once was a thing in the old days, but makes no sense * any longer today. Exists here for backwards compatibility * only. You can safely forget about it. / #define HAVE_RB_REG_NEW_STR 1 /* * Identical to rb_reg_new(), except it takes the expression in Ruby's string * instead of C's. * * @param[in] src Source code in String. * @param[in] opts Options e.g. ONIG_OPTION_MULTILINE. * @exception rb_eRegexpError `src` and `opts` do not interface. * @return Allocated new instance of ::rb_cRegexp. / VALUE rb_reg_new_str(VALUE src, int opts); RBIMPL_ATTR_NONNULL(()) /* * Creates a new Regular expression. * * @param[in] src Source code. * @param[in] len `strlen(src)`. * @param[in] opts Options e.g. ONIG_OPTION_MULTILINE. * @return Allocated new instance of ::rb_cRegexp. / VALUE rb_reg_new(const char src, long len, int opts); /** * Allocates an instance of ::rb_cRegexp. * * @private * * Nobody should call this function. Regular expressions that are not * initialised must not exist in the wild. / VALUE rb_reg_alloc(void); /* * Initialises an instance of ::rb_cRegexp. * * @private * * This just raises for ordinal regexp objects. Extension libraries must not * use. / VALUE rb_reg_init_str(VALUE re, VALUE s, int options); /* * This is the match operator. * * @param[in] re An instance of ::rb_cRegexp. * @param[in] str An instance of ::rb_cString. * @exception rb_eTypeError `str` is not a string. * @exception rb_eRegexpError Error inside of Onigmo (unlikely). * @retval RUBY_Qnil Match failed. * @retval otherwise Matched position (character index inside of * `str`). * @post `Regexp.last_match` is updated. * @post `$&`, `$~`, etc., are updated. * @note If you do this in ruby, named captures are assigned to local * variable of the local scope. But that doesn't happen here. The * assignment is done by the interpreter. / VALUE rb_reg_match(VALUE re, VALUE str); /* * Identical to rb_reg_match(), except it matches against rb_lastline_get() * (or, the `$_`). * * @param[in] re An instance of ::rb_cRegexp. * @exception rb_eRegexpError Error inside of Onigmo (unlikely). * @retval RUBY_Qnil Match failed or `$_` is absent. * @retval otherwise Matched position (character index inside of * `$_`). * @post `Regexp.last_match` is updated. * @post `$&`, `$~`, etc., are updated. / VALUE rb_reg_match2(VALUE re); /* * Queries the options of the passed regular expression. * * @param[in] re An instance of ::rb_cRegexp. * @return Its options. * @note Possible return values are defined in Onigmo.h. / int rb_reg_options(VALUE re); RBIMPL_SYMBOL_EXPORT_END() #endif / RBIMPL_INTERN_RE_H */ Back

Edit File : re.h | Size : 8.52 KB

#ifndef RBIMPL_INTERN_RE_H                           /*-*-C++-*-vi:se ft=cpp:*/
#define RBIMPL_INTERN_RE_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  `RBIMPL`   or  `rbimpl`   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      Public APIs related to ::rb_cRegexp.
 */
#include "ruby/internal/attr/nonnull.h"
#include "ruby/internal/dllexport.h"
#include "ruby/internal/value.h"

RBIMPL_SYMBOL_EXPORT_BEGIN()

/* re.c */

/**
 * @deprecated  This macro once was a thing in the old days, but makes no sense
 *              any  longer today.   Exists  here  for backwards  compatibility
 *              only.  You can safely forget about it.
 *
 * @internal
 *
 * This was a  function that switched between memcmp  and rb_memcicmp depending
 * on then-called `ruby_ignorecase`, or the `$=` global variable.  That feature
 * was abandoned in sometime around version 1.9.0.
 */
#define rb_memcmp memcmp

/**
 * Identical to  st_locale_insensitive_strcasecmp(), except  it is  timing safe
 * and returns something different.
 *
 * @param[in]  s1  Comparison LHS.
 * @param[in]  s2  Comparison RHS.
 * @param[in]  n   Comparison shall stop after first `n` bytes are scanned.
 * @retval     <0  `s1` is "less" than `s2`.
 * @retval      0  Both sides converted into lowercase would be identical.
 * @retval     >0  `s1` is "greater" than `s2`.
 * @note       The "case" here means that of the POSIX Locale.
 *
 * @internal
 *
 * Can accept NULLs as long as n is also 0, and returns 0.
 */
int rb_memcicmp(const void *s1,const void *s2, long n);

/**
 * Asserts  that  the given  MatchData  is  "occupied".  MatchData  shares  its
 * backend storages  with its  Regexp object.   But programs  can destructively
 * tamper its  contents.  Calling this  function beforehand shall  prevent such
 * modifications to spill over into other objects.
 *
 * @param[out]  md  Target instance of ::rb_cMatch.
 * @post        The object is "busy".
 *
 * @internal
 *
 * There is rb_match_unbusy internally, but extension libraries are left unable
 * to do so.
 */
void rb_match_busy(VALUE md);

/**
 * Identical to rb_reg_nth_match(), except it just returns Boolean.  This could
 * skip allocating a  returning string, resulting in  reduced memory footprints
 * if applicable.
 *
 * @param[in]  n              Match index.
 * @param[in]  md             An instance of ::rb_cMatch.
 * @exception  rb_eTypeError  `md` is not initialised.
 * @retval     RUBY_Qnil      There is no `n`-th capture.
 * @retval     RUBY_Qfalse    There is a `n`-th capture and is empty.
 * @retval     RUBY_Qtrue     There is a `n`-th capture that has something.
 *
 */
VALUE rb_reg_nth_defined(int n, VALUE md);

/**
 * Queries the nth captured substring.
 *
 * @param[in]  n              Match index.
 * @param[in]  md             An instance of ::rb_cMatch.
 * @exception  rb_eTypeError  `md` is not initialised.
 * @retval     RUBY_Qnil      There is no `n`-th capture.
 * @retval     otherwise      An allocated instance of  ::rb_cString containing
 *                            the contents captured.
 */
VALUE rb_reg_nth_match(int n, VALUE md);

/**
 * Queries the index of the given named capture.  Captures could be named.  But
 * that doesn't mean named ones are  not indexed.  A regular expression can mix
 * named  and non-named  captures, and  they  are all  indexed.  This  function
 * converts from a name to its index.
 *
 * @param[in]  match           An instance of ::rb_cMatch.
 * @param[in]  backref         Capture name, in String, Symbol, or Numeric.
 * @exception  rb_eIndexError  No such named capture.
 * @return     The index of the given name.
 */
int rb_reg_backref_number(VALUE match, VALUE backref);

/**
 * This just returns the argument, stringified.  What a poor name.
 *
 * @param[in]  md  An instance of ::rb_cMatch.
 * @return     Its 0th capture (i.e. entire matched string).
 */
VALUE rb_reg_last_match(VALUE md);

/**
 * The portion of the original string before the given match.
 *
 * @param[in]  md  An instance of ::rb_cMatch.
 * @return     Its "prematch".  This is perl's ``$```.
 */
VALUE rb_reg_match_pre(VALUE md);

/**
 * The portion of the original string after the given match.
 *
 * @param[in]  md  An instance of ::rb_cMatch.
 * @return     Its "postmatch".  This is perl's `$'`.
 */
VALUE rb_reg_match_post(VALUE md);

/**
 * The portion of the original string that captured at the very last.
 *
 * @param[in]  md  An instance of ::rb_cMatch.
 * @return     Its "lastmatch".  This is perl's `$+`.
 */
VALUE rb_reg_match_last(VALUE md);

/**
 * @private
 *
 * @deprecated  This macro once was a thing in the old days, but makes no sense
 *              any  longer today.   Exists  here  for backwards  compatibility
 *              only.  You can safely forget about it.
 */
#define HAVE_RB_REG_NEW_STR 1

/**
 * Identical to rb_reg_new(),  except it takes the expression  in Ruby's string
 * instead of C's.
 *
 * @param[in]  src              Source code in String.
 * @param[in]  opts             Options e.g. ONIG_OPTION_MULTILINE.
 * @exception  rb_eRegexpError  `src` and `opts` do not interface.
 * @return     Allocated new instance of ::rb_cRegexp.
 */
VALUE rb_reg_new_str(VALUE src, int opts);

RBIMPL_ATTR_NONNULL(())
/**
 * Creates a new Regular expression.
 *
 * @param[in]  src              Source code.
 * @param[in]  len              `strlen(src)`.
 * @param[in]  opts             Options e.g. ONIG_OPTION_MULTILINE.
 * @return     Allocated new instance of ::rb_cRegexp.
 */
VALUE rb_reg_new(const char *src, long len, int opts);

/**
 * Allocates an instance of ::rb_cRegexp.
 *
 * @private
 *
 * Nobody  should  call  this  function.   Regular  expressions  that  are  not
 * initialised must not exist in the wild.
 */
VALUE rb_reg_alloc(void);

/**
 * Initialises an instance of ::rb_cRegexp.
 *
 * @private
 *
 * This just raises  for ordinal regexp objects.  Extension  libraries must not
 * use.
 */
VALUE rb_reg_init_str(VALUE re, VALUE s, int options);

/**
 * This is the match operator.
 *
 * @param[in]  re               An instance of ::rb_cRegexp.
 * @param[in]  str              An instance of ::rb_cString.
 * @exception  rb_eTypeError    `str` is not a string.
 * @exception  rb_eRegexpError  Error inside of Onigmo (unlikely).
 * @retval     RUBY_Qnil        Match failed.
 * @retval     otherwise        Matched  position  (character index  inside  of
 *                              `str`).
 * @post       `Regexp.last_match` is updated.
 * @post       `$&`, `$~`, etc., are updated.
 * @note       If you  do this in  ruby, named  captures are assigned  to local
 *             variable of the local scope.  But that doesn't happen here.  The
 *             assignment is done by the interpreter.
 */
VALUE rb_reg_match(VALUE re, VALUE str);

/**
 * Identical  to rb_reg_match(),  except it  matches against  rb_lastline_get()
 * (or, the `$_`).
 *
 * @param[in]  re               An instance of ::rb_cRegexp.
 * @exception  rb_eRegexpError  Error inside of Onigmo (unlikely).
 * @retval     RUBY_Qnil        Match failed or `$_` is absent.
 * @retval     otherwise        Matched  position  (character index  inside  of
 *                              `$_`).
 * @post       `Regexp.last_match` is updated.
 * @post       `$&`, `$~`, etc., are updated.
 */
VALUE rb_reg_match2(VALUE re);

/**
 * Queries the options of the passed regular expression.
 *
 * @param[in]  re  An instance of ::rb_cRegexp.
 * @return     Its options.
 * @note       Possible return values are defined in Onigmo.h.
 */
int rb_reg_options(VALUE re);

RBIMPL_SYMBOL_EXPORT_END()

#endif /* RBIMPL_INTERN_RE_H */

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