NAME

SYNOPSIS

DESCRIPTION

OPTIONS

-+, --flex

generate Flex-compatible C++ scanner

-a, --dotall

dot in patterns match newline

-B, --batch

generate scanner for batch input by buffering the entire input

-f, --full

generate full scanner with FSM opcode tables

-F, --fast

generate fast scanner with FSM code

-i, --case-insensitive

ignore case in patterns

-I, --interactive, --always-interactive

generate interactive scanner

-m NAME, --matcher=NAME

match with boost, boost_perl, pcre2_perl, reflex, std_ecma, ...

--pattern=NAME

use custom pattern class NAME for custom matcher option -m

--include=FILE

include header FILE.h for custom matcher option -m

-S, --find

generate search engine to find matches, ignores unmatched input

-T N, --tabs=N

set default tab size to N (1,2,4,8) for indent/dedent matching

-u, --unicode

match Unicode . (dot), \p, \s, \w, etc and group UTF-8 bytes

-x, --freespace

ignore space in patterns

Generated files:

-o FILE, --outfile=FILE

specify output FILE instead of lex.yy.cpp

-t, --stdout

write scanner on stdout instead of lex.yy.cpp

--graphs-file[=FILE]

write the scanner's DFA in Graphviz format to FILE.gv

--header-file[=FILE]

write a C++ header FILE.h in addition to the scanner

--regexp-file[=FILE]

write the scanner's regular expression patterns to FILE.txt

--tables-file[=FILE]

write the scanner's FSM opcode tables or FSM code to FILE.cpp

Generated code:

--namespace=NAME

use C++ namespace NAME for the generated scanner class, with multiple namespaces specified as NAME1.NAME2.NAME3 ...

--lexer=NAME

use lexer class NAME instead of Lexer or yyFlexLexer

--lex=NAME

use lex function NAME instead of lex or yylex

--class=NAME

declare a user-defined scanner class NAME

--yyclass=NAME

generate Flex-compatible scanner with user-defined class NAME

--main

generate main() to invoke lex() or yylex() once

-L, --noline

suppress #line directives in scanner

-P NAME, --prefix=NAME

use NAME as prefix of the FlexLexer class name and its members

--nostdinit

initialize input to std::cin instead of stdin

--bison

generate global yylex() scanner, yytext, yyleng, yylineno

--bison-bridge

generate reentrant yylex() scanner for bison pure parser

--bison-cc

generate bison C++ interface code for bison lalr1.cc skeleton

--bison-cc-namespace=NAME

use namespace NAME with bison lalr1.cc skeleton

--bison-cc-parser=NAME

use parser class NAME with bison lalr1.cc skeleton

--bison-complete

use bison complete-symbols feature, implies bison-cc

--bison-locations

include bison yylloc support

-R, --reentrant

generate Flex-compatible yylex() reentrant scanner functions NOTE: adds functions only, reflex scanners are always reentrant

-y, --yy

same as --flex and --bison, also generate global yyin, yyout

--noyywrap

do not call global yywrap() on EOF, requires option --flex

--exception=VALUE

use exception VALUE to throw in the default rule of the scanner

--token-type=NAME

use NAME as the return type of lex() and yylex() instead of int

Debugging:

-d, --debug

enable debug mode in scanner

-p, --perf-report

scanner reports detailed performance statistics to stderr

-s, --nodefault

disable the default rule in scanner that echoes unmatched text

-v, --verbose

report summary of scanner statistics to stdout

-w, --nowarn

do not generate warnings

Miscellaneous:

-c, -n

do-nothing POSIX options

-?, -h, --help

produce this help message and exit

-V, --version

report reflex version and exit

Lex/Flex-like options that are enabled by default or have no effect:

--c++ default

--lex-compat n/a

--never-interactive default

--nounistd n/a

--posix-compat n/a

--stack n/a

--warn default

--yylineno default

--yymore default

--7bit n/a

--8bit default

DEPENDENCIES

DOCUMENTATION

https://www.genivia.com/doc/reflex/html/index.html

to browse the latest version of the reflex user guide.

BUGS

Report bugs at:

https://github.com/Genivia/RE-flex/issues

LICENSE

SEE ALSO