regex_constants.h File Reference

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## Namespaces

| std
| std::regex_constants

## 5.1 Regular Expression Syntax Options

enum | std::regex_constants::__syntax_option { _S_icase, _S_nosubs, _S_optimize, _S_collate, _S_ECMAScript, _S_basic, _S_extended, _S_awk, _S_grep, _S_egrep, _S_syntax_last }
enum | std::regex_constants::syntax_option_type : unsigned int { std::regex_constants::icase, std::regex_constants::nosubs, std::regex_constants::optimize, std::regex_constants::collate, std::regex_constants::ECMAScript, std::regex_constants::basic, std::regex_constants::extended, std::regex_constants::awk, std::regex_constants::grep, std::regex_constants::egrep }
constexpr syntax_option_type | std::regex_constants::operator& (syntax_option_type __a, syntax_option_type __b)
constexpr syntax_option_type | std::regex_constants::operator| (syntax_option_type __a, syntax_option_type __b)
constexpr syntax_option_type | std::regex_constants::operator^ (syntax_option_type __a, syntax_option_type __b)
constexpr syntax_option_type | std::regex_constants::operator~ (syntax_option_type __a)
syntax_option_type & | std::regex_constants::operator&= (syntax_option_type &__a, syntax_option_type __b)
syntax_option_type & | std::regex_constants::operator|= (syntax_option_type &__a, syntax_option_type __b)
syntax_option_type & | std::regex_constants::operator^= (syntax_option_type &__a, syntax_option_type __b)

## 5.2 Matching Rules

Matching a regular expression against a sequence of characters [first, last) proceeds according to the rules of the grammar specified for the regular expression object, modified according to the effects listed below for any bitmask elements set.
enum | std::regex_constants::__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 }

enum

std::regex_constants::match_flag_type : unsigned int {
std::regex_constants::match_default, std::regex_constants::match_not_bol, std::regex_constants::match_not_eol, std::regex_constants::match_not_bow,
std::regex_constants::match_not_eow, std::regex_constants::match_any, std::regex_constants::match_not_null, std::regex_constants::match_continuous,
std::regex_constants::match_prev_avail, std::regex_constants::format_default, std::regex_constants::format_sed, std::regex_constants::format_no_copy,
std::regex_constants::format_first_only
}

constexpr match_flag_type | std::regex_constants::operator& (match_flag_type __a, match_flag_type __b)
constexpr match_flag_type | std::regex_constants::operator| (match_flag_type __a, match_flag_type __b)
constexpr match_flag_type | std::regex_constants::operator^ (match_flag_type __a, match_flag_type __b)
constexpr match_flag_type | std::regex_constants::operator~ (match_flag_type __a)
match_flag_type & | std::regex_constants::operator&= (match_flag_type &__a, match_flag_type __b)
match_flag_type & | std::regex_constants::operator|= (match_flag_type &__a, match_flag_type __b)
match_flag_type & | std::regex_constants::operator^= (match_flag_type &__a, match_flag_type __b)

## Detailed Description

Constant definitions for the std regex library.

This is an internal header file, included by other library headers. Do not attempt to use it directly. Instead, include <regex>.

Definition in file regex_constants.h.