std::regex_constants(3)

NAME

std::regex_constants

Detailed Description

ISO C++ 0x entities sub namespace for regex.

SYNOPSIS

Typedefs
    typedef std::bitset< _S_match_flag_last > match_flag_type
    typedef unsigned int syntax_option_type
Enumerations
    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 }
    enum __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 error_type { _S_error_collate, _S_error_ctype, _S_error_escape,
        _S_error_backref, _S_error_brack, _S_error_paren, _S_error_brace,
        _S_error_badbrace, _S_error_range, _S_error_space,
        _S_error_badrepeat, _S_error_complexity, _S_error_stack,
        _S_error_last }
Functions
    static const error_type error_backref (_S_error_backref)
    static const error_type error_badbrace (_S_error_badbrace)
    static const error_type error_badrepeat (_S_error_badrepeat)
    static const error_type error_brace (_S_error_brace)
    static const error_type error_brack (_S_error_brack)
    static const error_type error_collate (_S_error_collate)
    static const error_type error_complexity (_S_error_complexity)
    static const error_type error_ctype (_S_error_ctype)
    static const error_type error_escape (_S_error_escape)
    static const error_type error_paren (_S_error_paren)
    static const error_type error_range (_S_error_range)
    static const error_type error_space (_S_error_space)
    static const error_type error_stack (_S_error_stack)
Variables
    static const syntax_option_type awk
    static const syntax_option_type basic
    static const syntax_option_type collate
    static const syntax_option_type ECMAScript
    static const syntax_option_type egrep
    static const syntax_option_type extended
    static const match_flag_type format_default
    static const match_flag_type format_first_only
    static const match_flag_type format_no_copy
    static const match_flag_type format_sed
    static const syntax_option_type grep
    static const syntax_option_type icase
    static const match_flag_type match_any
    static const match_flag_type match_continuous
    static const match_flag_type match_default
    static const match_flag_type match_not_bol
    static const match_flag_type match_not_bow
    static const match_flag_type match_not_eol
    static const match_flag_type match_not_eow
    static const match_flag_type match_not_null
    static const match_flag_type match_prev_avail
    static const syntax_option_type nosubs
    static const syntax_option_type optimize

Typedef Documentation

typedef std::bitset<_S_match_flag_last>: std::regex_constants::match_flag_type This is a bitmask type indicating regex 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.; The match_flag_type is implementation defined but it is valid to
perform bitwise operations on these values and expect the right thing
to happen.; Definition at line 167 of file tr1_impl/regex.
typedef unsigned int std::regex_constants::syntax_option_type: This is a bitmask type indicating how to interpret the regex.; The syntax_option_type is implementation defined but it is valid to
perform bitwise operations on these values and expect the right thing
to happen.; A valid value of type syntax_option_type shall have exactly one of the elements ECMAScript, basic, extended, awk, grep, egrep set.; Definition at line 75 of file tr1_impl/regex.

Enumeration Type Documentation

enum std::regex_constants::error_type: [7.5.3] implementation-defined error type; Definition at line 245 of file tr1_impl/regex.

Function Documentation

static const error_type std::regex_constants::error_backref: (_S_error_backref) [static] The expression contained an invalid back reference.
static const error_type std::regex_constants::error_badbrace: (_S_error_badbrace) [static] The expression contained an invalid range in a {} expression.
static const error_type std::regex_constants::error_badrepeat: (_S_error_badrepeat) [static] One of *?+{ was not preceded by a valid regular expression.
static const error_type std::regex_constants::error_brace (_S_error_brace): [static]
The expression contained mismatched { and }.
static const error_type std::regex_constants::error_brack (_S_error_brack): [static]
The expression contained mismatched [ and ].
static const error_type std::regex_constants::error_collate: (_S_error_collate) [static] The expression contained an invalid collating element name.
static const error_type std::regex_constants::error_complexity: (_S_error_complexity) [static] The complexity of an attempted match against a regular expression
exceeded a pre-set level.
static const error_type std::regex_constants::error_ctype (_S_error_ctype): [static]
The expression contained an invalid character class name.
static const error_type std::regex_constants::error_escape: (_S_error_escape) [static] The expression contained an invalid escaped character, or a trailing
escape.
static const error_type std::regex_constants::error_paren (_S_error_paren): [static]
The expression contained mismatched ( and ).
static const error_type std::regex_constants::error_range (_S_error_range): [static]
The expression contained an invalid character range, such as [b-a] in
most encodings.
static const error_type std::regex_constants::error_space (_S_error_space): [static]
There was insufficient memory to convert the expression into a finite
state machine.
static const error_type std::regex_constants::error_stack (_S_error_stack): [static]
There was insufficient memory to determine whether the regular
expression could match the specified character sequence.

Variable Documentation

const syntax_option_type std::regex_constants::awk [static]: Specifies that the grammar recognized by the regular expression engine is that used by POSIX utility awk in IEEE Std 1003.1-2001. This option is identical to syntax_option_type extended, except that C-style escape sequences are supported. These sequences are, explicitly, '\', '', '', '', '; Definition at line 123 of file tr1_impl/regex.
const syntax_option_type std::regex_constants::basic [static]: Specifies that the grammar recognized by the regular expression engine is that used by POSIX basic regular expressions in IEEE Std
1003.1-2001, Portable Operating System Interface (POSIX), Base
Definitions and Headers, Section 9, Regular Expressions [IEEE,
Information Technology -- Portable Operating System Interface (POSIX), IEEE Standard 1003.1-2001].; Definition at line 109 of file tr1_impl/regex.
const syntax_option_type std::regex_constants::collate [static]: Specifies that character ranges of the form [a-b] should be locale sensitive.; Definition at line 94 of file tr1_impl/regex.
const syntax_option_type std::regex_constants::ECMAScript [static]: Specifies that the grammar recognized by the regular expression engine is that used by ECMAScript in ECMA-262 [Ecma International, ECMAScript Language Specification, Standard Ecma-262, third edition, 1999], as
modified in tr1 section [7.13]. This grammar is similar to that defined in the PERL scripting language but extended with elements found in the POSIX regular expression grammar.; Definition at line 102 of file tr1_impl/regex.
const syntax_option_type std::regex_constants::egrep [static]: Specifies that the grammar recognized by the regular expression engine is that used by POSIX utility grep when given the -E option in IEEE Std 1003.1-2001. This option is identical to syntax_option_type extended,
except that newlines are treated as whitespace.; Definition at line 135 of file tr1_impl/regex.
const syntax_option_type std::regex_constants::extended [static]: Specifies that the grammar recognized by the regular expression engine is that used by POSIX extended regular expressions in IEEE Std
1003.1-2001, Portable Operating System Interface (POSIX), Base
Definitions and Headers, Section 9, Regular Expressions.; Definition at line 115 of file tr1_impl/regex.
const match_flag_type std::regex_constants::format_default [static]: When a regular expression match is to be replaced by a new string, the new string is constructed using the rules used by the ECMAScript
replace function in ECMA- 262 [Ecma International, ECMAScript Language Specification, Standard Ecma-262, third edition, 1999], part 15.5.4.11 String.prototype.replace. In addition, during search and replace
operations all non-overlapping occurrences of the regular expression
are located and replaced, and sections of the input that did not match the expression are copied unchanged to the output string.; Format strings (from ECMA-262 [15.5.4.11]): $$ $ $& The matched
substring. $` The portion of string that precedes the matched substring. $' The portion of string that follows the matched substring. $n The nth capture, where n is in [1,9] and $n is not followed by a
decimal digit. If n <= m and the nth capture is undefined, use the
empty string instead. If n > m, the result is implementation-defined.
$nn The nnth capture, where nn is a two-digit decimal number on [01,
99]. If nn <= m and the nth capture is undefined, use the empty string instead. If nn > m, the result is implementation-defined.; Definition at line 226 of file tr1_impl/regex.
const match_flag_type std::regex_constants::format_first_only [static]: When specified during a search and replace operation, only the first
occurrence of the regular expression shall be replaced.; Definition at line 241 of file tr1_impl/regex.
const match_flag_type std::regex_constants::format_no_copy [static]: 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.; Definition at line 237 of file tr1_impl/regex.
const match_flag_type std::regex_constants::format_sed [static]: When a regular expression match is to be replaced by a new string, the new string is constructed using the rules used by the POSIX sed utility in IEEE Std 1003.1- 2001 [IEEE, Information Technology -- Portable
Operating System Interface (POSIX), IEEE Standard 1003.1-2001].; Definition at line 232 of file tr1_impl/regex.
const syntax_option_type std::regex_constants::grep [static]: Specifies that the grammar recognized by the regular expression engine is that used by POSIX utility grep in IEEE Std 1003.1-2001. This option is identical to syntax_option_type basic, except that newlines are
treated as whitespace.; Definition at line 129 of file tr1_impl/regex.
const syntax_option_type std::regex_constants::icase [static]: Specifies that the matching of regular expressions against a character sequence shall be performed without regard to case.; Definition at line 79 of file tr1_impl/regex.
const match_flag_type std::regex_constants::match_any [static]: If more than one match is possible then any match is an acceptable
result.; Definition at line 191 of file tr1_impl/regex.
const match_flag_type std::regex_constants::match_continuous [static]: The expression only matches a sub-sequence that begins at first .; Definition at line 197 of file tr1_impl/regex.
const match_flag_type std::regex_constants::match_not_bol [static]: 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).; Definition at line 174 of file tr1_impl/regex.
const match_flag_type std::regex_constants::match_not_bow [static]: The expression '\b' is not matched against the sub-sequence
[first,first).; Definition at line 183 of file tr1_impl/regex.
const match_flag_type std::regex_constants::match_not_eol [static]: 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).; Definition at line 179 of file tr1_impl/regex.
const match_flag_type std::regex_constants::match_not_eow [static]: The expression '\b' should not be matched against the sub-sequence
[last,last).; Definition at line 187 of file tr1_impl/regex.
const match_flag_type std::regex_constants::match_not_null [static]: The expression does not match an empty sequence.; Definition at line 194 of file tr1_impl/regex.
const match_flag_type std::regex_constants::match_prev_avail [static]: --first is a valid iterator position. When this flag is set then the flags match_not_bol and match_not_bow are ignored by the regular
expression algorithms 7.11 and iterators 7.12.; Definition at line 202 of file tr1_impl/regex.
const syntax_option_type std::regex_constants::nosubs [static]: 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.; Definition at line 84 of file tr1_impl/regex.
const syntax_option_type std::regex_constants::optimize [static]: Specifies that the regular expression engine should pay more attention to the speed with which regular expressions are matched, and less to the speed with which regular expression objects are constructed.
Otherwise it has no detectable effect on the program output.; Definition at line 90 of file tr1_impl/regex.

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std::regex_constants(3)

NAME

Detailed Description

SYNOPSIS

Typedef Documentation

Enumeration Type Documentation

Function Documentation

Variable Documentation

Author