* @name 5.1 Regular Expression Syntax Options
*/
///@{
- enum __syntax_option
- {
- _S_icase,
- _S_nosubs,
- _S_optimize,
- _S_collate,
- _S_ECMAScript,
- _S_basic,
- _S_extended,
- _S_awk,
- _S_grep,
- _S_egrep,
- _S_polynomial,
- _S_multiline
- };
/**
* @brief This is a bitmask type indicating how to interpret the regex.
* elements @c ECMAScript, @c basic, @c extended, @c awk, @c grep, @c egrep
* %set.
*/
- enum syntax_option_type : unsigned int { };
+ enum syntax_option_type : unsigned int
+ {
+ _S_icase = 1 << 0,
+ _S_nosubs = 1 << 1,
+ _S_optimize = 1 << 2,
+ _S_collate = 1 << 3,
+ _S_ECMAScript = 1 << 4,
+ _S_basic = 1 << 5,
+ _S_extended = 1 << 6,
+ _S_awk = 1 << 7,
+ _S_grep = 1 << 8,
+ _S_egrep = 1 << 9,
+ _S_polynomial = 1 << 10,
+ _S_multiline = 1 << 11
+ };
/**
* Specifies that the matching of regular expressions against a character
* sequence shall be performed without regard to case.
*/
- _GLIBCXX17_INLINE constexpr syntax_option_type icase =
- static_cast<syntax_option_type>(1 << _S_icase);
+ _GLIBCXX17_INLINE constexpr syntax_option_type icase = _S_icase;
/**
* Specifies that when a regular expression is matched against a character
* container sequence, no sub-expression matches are to be stored in the
* supplied match_results structure.
*/
- _GLIBCXX17_INLINE constexpr syntax_option_type nosubs =
- static_cast<syntax_option_type>(1 << _S_nosubs);
+ _GLIBCXX17_INLINE constexpr syntax_option_type nosubs = _S_nosubs;
/**
* Specifies that the regular expression engine should pay more attention to
* speed with which regular expression objects are constructed. Otherwise
* it has no detectable effect on the program output.
*/
- _GLIBCXX17_INLINE constexpr syntax_option_type optimize =
- static_cast<syntax_option_type>(1 << _S_optimize);
+ _GLIBCXX17_INLINE constexpr syntax_option_type optimize = _S_optimize;
/**
* Specifies that character ranges of the form [a-b] should be locale
* sensitive.
*/
- _GLIBCXX17_INLINE constexpr syntax_option_type collate =
- static_cast<syntax_option_type>(1 << _S_collate);
+ _GLIBCXX17_INLINE constexpr syntax_option_type collate = _S_collate;
/**
* Specifies that the grammar recognized by the regular expression engine is
* in the PERL scripting language but extended with elements found in the
* POSIX regular expression grammar.
*/
- _GLIBCXX17_INLINE constexpr syntax_option_type ECMAScript =
- static_cast<syntax_option_type>(1 << _S_ECMAScript);
+ _GLIBCXX17_INLINE constexpr syntax_option_type ECMAScript = _S_ECMAScript;
/**
* Specifies that the grammar recognized by the regular expression engine is
* Headers, Section 9, Regular Expressions [IEEE, Information Technology --
* Portable Operating System Interface (POSIX), IEEE Standard 1003.1-2001].
*/
- _GLIBCXX17_INLINE constexpr syntax_option_type basic =
- static_cast<syntax_option_type>(1 << _S_basic);
+ _GLIBCXX17_INLINE constexpr syntax_option_type basic = _S_basic;
/**
* Specifies that the grammar recognized by the regular expression engine is
* Portable Operating System Interface (POSIX), Base Definitions and
* Headers, Section 9, Regular Expressions.
*/
- _GLIBCXX17_INLINE constexpr syntax_option_type extended =
- static_cast<syntax_option_type>(1 << _S_extended);
+ _GLIBCXX17_INLINE constexpr syntax_option_type extended = _S_extended;
/**
* Specifies that the grammar recognized by the regular expression engine is
* \\\\, \\a, \\b, \\f, \\n, \\r, \\t , \\v, \\&apos,, &apos,,
* and \\ddd (where ddd is one, two, or three octal digits).
*/
- _GLIBCXX17_INLINE constexpr syntax_option_type awk =
- static_cast<syntax_option_type>(1 << _S_awk);
+ _GLIBCXX17_INLINE constexpr syntax_option_type awk = _S_awk;
/**
* Specifies that the grammar recognized by the regular expression engine is
* identical to syntax_option_type basic, except that newlines are treated
* as whitespace.
*/
- _GLIBCXX17_INLINE constexpr syntax_option_type grep =
- static_cast<syntax_option_type>(1 << _S_grep);
+ _GLIBCXX17_INLINE constexpr syntax_option_type grep = _S_grep;
/**
* Specifies that the grammar recognized by the regular expression engine is
* IEEE Std 1003.1-2001. This option is identical to syntax_option_type
* extended, except that newlines are treated as whitespace.
*/
- _GLIBCXX17_INLINE constexpr syntax_option_type egrep =
- static_cast<syntax_option_type>(1 << _S_egrep);
+ _GLIBCXX17_INLINE constexpr syntax_option_type egrep = _S_egrep;
#if __cplusplus >= 201703L || !defined __STRICT_ANSI__
// _GLIBCXX_RESOLVE_LIB_DEFECTS
* Valid for the ECMAScript syntax, ignored otherwise.
* @since C++17
*/
- _GLIBCXX17_INLINE constexpr syntax_option_type multiline =
- static_cast<syntax_option_type>(1 << _S_multiline);
+ _GLIBCXX17_INLINE constexpr syntax_option_type multiline = _S_multiline;
#endif
/// Extension: Equivalent to regex_constants::multiline for C++11 and C++14.
- _GLIBCXX17_INLINE constexpr syntax_option_type __multiline =
- static_cast<syntax_option_type>(1 << _S_multiline);
+ _GLIBCXX17_INLINE constexpr syntax_option_type __multiline = _S_multiline;
/**
* Extension: Ensure both space complexity of compiled regex and
* If specified in a regex with back-references, the exception
* regex_constants::error_complexity will be thrown.
*/
- _GLIBCXX17_INLINE constexpr syntax_option_type __polynomial =
- static_cast<syntax_option_type>(1 << _S_polynomial);
+ _GLIBCXX17_INLINE constexpr syntax_option_type __polynomial = _S_polynomial;
constexpr inline syntax_option_type
operator&(syntax_option_type __a, syntax_option_type __b)
operator~(syntax_option_type __a)
{ return (syntax_option_type)(~static_cast<unsigned int>(__a)); }
+ _GLIBCXX14_CONSTEXPR
inline syntax_option_type&
operator&=(syntax_option_type& __a, syntax_option_type __b)
{ return __a = __a & __b; }
+ _GLIBCXX14_CONSTEXPR
inline syntax_option_type&
operator|=(syntax_option_type& __a, syntax_option_type __b)
{ return __a = __a | __b; }
+ _GLIBCXX14_CONSTEXPR
inline syntax_option_type&
operator^=(syntax_option_type& __a, syntax_option_type __b)
{ return __a = __a ^ __b; }
*/
///@{
- enum __match_flag
- {
- _S_not_bol,
- _S_not_eol,
- _S_not_bow,
- _S_not_eow,
- _S_any,
- _S_not_null,
- _S_continuous,
- _S_prev_avail,
- _S_sed,
- _S_no_copy,
- _S_first_only,
- _S_match_flag_last
- };
-
/**
* @brief This is a bitmask type indicating regex matching rules.
*
* perform bitwise operations on these values and expect the right thing to
* happen.
*/
- enum match_flag_type : unsigned int { };
+ enum match_flag_type : unsigned int
+ {
+ _S_default,
+ _S_not_bol = 1 << 0,
+ _S_not_eol = 1 << 1,
+ _S_not_bow = 1 << 2,
+ _S_not_eow = 1 << 3,
+ _S_any = 1 << 4,
+ _S_not_null = 1 << 5,
+ _S_continuous = 1 << 6,
+ _S_prev_avail = 1 << 7,
+ _S_sed = 1 << 8,
+ _S_no_copy = 1 << 9,
+ _S_first_only = 1 << 10,
+ _S_match_flag_last = 1 << 11
+ };
/**
* The default matching rules.
*/
- _GLIBCXX17_INLINE constexpr match_flag_type match_default =
- static_cast<match_flag_type>(0);
+ _GLIBCXX17_INLINE constexpr match_flag_type match_default = _S_default;
/**
* The first character in the sequence [first, last) is treated as though it
* is not at the beginning of a line, so the character (^) in the regular
* expression shall not match [first, first).
*/
- _GLIBCXX17_INLINE constexpr match_flag_type match_not_bol =
- static_cast<match_flag_type>(1 << _S_not_bol);
+ _GLIBCXX17_INLINE constexpr match_flag_type match_not_bol = _S_not_bol;
/**
* The last character in the sequence [first, last) is treated as though it
* is not at the end of a line, so the character ($) in the regular
* expression shall not match [last, last).
*/
- _GLIBCXX17_INLINE constexpr match_flag_type match_not_eol =
- static_cast<match_flag_type>(1 << _S_not_eol);
+ _GLIBCXX17_INLINE constexpr match_flag_type match_not_eol = _S_not_eol;
/**
* The expression \\b is not matched against the sub-sequence
* [first,first).
*/
- _GLIBCXX17_INLINE constexpr match_flag_type match_not_bow =
- static_cast<match_flag_type>(1 << _S_not_bow);
+ _GLIBCXX17_INLINE constexpr match_flag_type match_not_bow = _S_not_bow;
/**
* The expression \\b should not be matched against the sub-sequence
* [last,last).
*/
- _GLIBCXX17_INLINE constexpr match_flag_type match_not_eow =
- static_cast<match_flag_type>(1 << _S_not_eow);
+ _GLIBCXX17_INLINE constexpr match_flag_type match_not_eow = _S_not_eow;
/**
* If more than one match is possible then any match is an acceptable
* result.
*/
- _GLIBCXX17_INLINE constexpr match_flag_type match_any =
- static_cast<match_flag_type>(1 << _S_any);
+ _GLIBCXX17_INLINE constexpr match_flag_type match_any = _S_any;
/**
* The expression does not match an empty sequence.
*/
- _GLIBCXX17_INLINE constexpr match_flag_type match_not_null =
- static_cast<match_flag_type>(1 << _S_not_null);
+ _GLIBCXX17_INLINE constexpr match_flag_type match_not_null = _S_not_null;
/**
* The expression only matches a sub-sequence that begins at first .
*/
- _GLIBCXX17_INLINE constexpr match_flag_type match_continuous =
- static_cast<match_flag_type>(1 << _S_continuous);
+ _GLIBCXX17_INLINE constexpr match_flag_type match_continuous = _S_continuous;
/**
* `--first` is a valid iterator position. When this flag is set then the
* `regex_match`, `regex_search`, and `regex_replace`, and by the iterators
* `regex_iterator` and `regex_token_iterator`.
*/
- _GLIBCXX17_INLINE constexpr match_flag_type match_prev_avail =
- static_cast<match_flag_type>(1 << _S_prev_avail);
+ _GLIBCXX17_INLINE constexpr match_flag_type match_prev_avail = _S_prev_avail;
/**
* When a regular expression match is to be replaced by a new string, the
* undefined, use the empty string instead. If
* nn > match_results::size(), the result is implementation-defined.
*/
- _GLIBCXX17_INLINE constexpr match_flag_type format_default =
- static_cast<match_flag_type>(0);
+ _GLIBCXX17_INLINE constexpr match_flag_type format_default = _S_default;
/**
* When a regular expression match is to be replaced by a new string, the
* in IEEE Std 1003.1- 2001 [IEEE, Information Technology -- Portable
* Operating System Interface (POSIX), IEEE Standard 1003.1-2001].
*/
- _GLIBCXX17_INLINE constexpr match_flag_type format_sed =
- static_cast<match_flag_type>(1 << _S_sed);
+ _GLIBCXX17_INLINE constexpr match_flag_type format_sed = _S_sed;
/**
* During a search and replace operation, sections of the character
* container sequence being searched that do not match the regular
* expression shall not be copied to the output string.
*/
- _GLIBCXX17_INLINE constexpr match_flag_type format_no_copy =
- static_cast<match_flag_type>(1 << _S_no_copy);
+ _GLIBCXX17_INLINE constexpr match_flag_type format_no_copy = _S_no_copy;
/**
* When specified during a search and replace operation, only the first
* occurrence of the regular expression shall be replaced.
*/
- _GLIBCXX17_INLINE constexpr match_flag_type format_first_only =
- static_cast<match_flag_type>(1 << _S_first_only);
+ _GLIBCXX17_INLINE constexpr match_flag_type format_first_only = _S_first_only;
constexpr inline match_flag_type
operator&(match_flag_type __a, match_flag_type __b)
operator~(match_flag_type __a)
{ return (match_flag_type)(~static_cast<unsigned int>(__a)); }
+ _GLIBCXX14_CONSTEXPR
inline match_flag_type&
operator&=(match_flag_type& __a, match_flag_type __b)
{ return __a = __a & __b; }
+ _GLIBCXX14_CONSTEXPR
inline match_flag_type&
operator|=(match_flag_type& __a, match_flag_type __b)
{ return __a = __a | __b; }
+ _GLIBCXX14_CONSTEXPR
inline match_flag_type&
operator^=(match_flag_type& __a, match_flag_type __b)
{ return __a = __a ^ __b; }
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