.TH "std::__detail::_Scanner< _CharT >" 3cxx "Mon Mar 23 2020" "libstdc++" \" -*- nroff -*-
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.SH NAME
std::__detail::_Scanner< _CharT > \- Scans an input range for regex tokens\&.  

.SH SYNOPSIS
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.PP
.PP
Inherits std::__detail::_ScannerBase\&.
.SS "Public Types"

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.RI "typedef \fBregex_constants::syntax_option_type\fP \fB_FlagT\fP"
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.RI "typedef \fBstd::basic_string\fP< _CharT > \fB_StringT\fP"
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.RI "enum \fB_TokenT\fP : unsigned { \fB_S_token_anychar\fP, \fB_S_token_ord_char\fP, \fB_S_token_oct_num\fP, \fB_S_token_hex_num\fP, \fB_S_token_backref\fP, \fB_S_token_subexpr_begin\fP, \fB_S_token_subexpr_no_group_begin\fP, \fB_S_token_subexpr_lookahead_begin\fP, \fB_S_token_subexpr_end\fP, \fB_S_token_bracket_begin\fP, \fB_S_token_bracket_neg_begin\fP, \fB_S_token_bracket_end\fP, \fB_S_token_interval_begin\fP, \fB_S_token_interval_end\fP, \fB_S_token_quoted_class\fP, \fB_S_token_char_class_name\fP, \fB_S_token_collsymbol\fP, \fB_S_token_equiv_class_name\fP, \fB_S_token_opt\fP, \fB_S_token_or\fP, \fB_S_token_closure0\fP, \fB_S_token_closure1\fP, \fB_S_token_line_begin\fP, \fB_S_token_line_end\fP, \fB_S_token_word_bound\fP, \fB_S_token_comma\fP, \fB_S_token_dup_count\fP, \fB_S_token_eof\fP, \fB_S_token_bracket_dash\fP, \fB_S_token_unknown\fP }"
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.RI "Token types returned from the scanner\&. "
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.SS "Public Member Functions"

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.RI "\fB_Scanner\fP (_IterT __begin, _IterT __end, \fB_FlagT\fP __flags, \fBstd::locale\fP __loc)"
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.RI "void \fB_M_advance\fP ()"
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.RI "\fB_TokenT\fP \fB_M_get_token\fP () const"
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.RI "const \fB_StringT\fP & \fB_M_get_value\fP () const"
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.SS "Public Attributes"

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.RI "const typedef \fBstd::ctype\fP< _CharT > \fB_CtypeT\fP"
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.RI "const typedef _CharT * \fB_IterT\fP"
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.SS "Protected Types"

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.RI "enum \fB_StateT\fP { \fB_S_state_normal\fP, \fB_S_state_in_brace\fP, \fB_S_state_in_bracket\fP }"
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.SS "Protected Member Functions"

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.RI "const char * \fB_M_find_escape\fP (char __c)"
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.RI "bool \fB_M_is_awk\fP () const"
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.RI "bool \fB_M_is_basic\fP () const"
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.RI "bool \fB_M_is_ecma\fP () const"
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.RI "bool \fB_M_is_extended\fP () const"
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.RI "bool \fB_M_is_grep\fP () const"
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.SS "Protected Attributes"

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.RI "bool \fB_M_at_bracket_start\fP"
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.RI "const \fBstd::pair\fP< char, char > \fB_M_awk_escape_tbl\fP [11]"
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.RI "const char * \fB_M_basic_spec_char\fP"
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.RI "const \fBstd::pair\fP< char, char > \fB_M_ecma_escape_tbl\fP [8]"
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.RI "const char * \fB_M_ecma_spec_char\fP"
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.RI "const \fBstd::pair\fP< char, char > * \fB_M_escape_tbl\fP"
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.RI "const char * \fB_M_extended_spec_char\fP"
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.RI "\fB_FlagT\fP \fB_M_flags\fP"
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.RI "const char * \fB_M_spec_char\fP"
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.RI "_StateT \fB_M_state\fP"
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.RI "\fB_TokenT\fP \fB_M_token\fP"
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.RI "const \fBstd::pair\fP< char, \fB_TokenT\fP > \fB_M_token_tbl\fP [9]"
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.in -1c
.SH "Detailed Description"
.PP 

.SS "template<typename _CharT>
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class std::__detail::_Scanner< _CharT >"
Scans an input range for regex tokens\&. 

The _Scanner class interprets the regular expression pattern in the input range passed to its constructor as a sequence of parse tokens passed to the regular expression compiler\&. The sequence of tokens provided depends on the flag settings passed to the constructor: different regular expression grammars will interpret the same input pattern in syntactically different ways\&. 
.PP
Definition at line 210 of file regex_scanner\&.h\&.

.SH "Author"
.PP 
Generated automatically by Doxygen for libstdc++ from the source code\&.