mllex(1) General Commands Manual mllex(1)NAME
mllex - lexer generator for use with Standard ML and MLton
SYNOPSIS
mllex foo.lex
DESCRIPTION
mllex takes as input a lexer specification foo.lex and produces as output in foo.lex.sml a lexer written in SML.
For details on the lexer specification, see A Lexical Analyzer Generator for Standard ML, which is in /usr/share/doc/mllex.pdf.
SEE ALSO mlton(1),mlyacc(1)
February 23, 2008 mllex(1)
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JOCAMLLEX(1) General Commands Manual JOCAMLLEX(1)NAME
jocamllex - The JoCaml lexer generator
SYNOPSIS
jocamllex [ -o output-file ] [ -ml ] filename.mll
DESCRIPTION
The jocamllex(1) command generates Objective Caml lexers from a set of regular expressions with associated semantic actions, in the style
of lex(1).
Running jocamllex(1) on the input file lexer.mll produces Caml code for a lexical analyzer in file lexer.ml.
This file defines one lexing function per entry point in the lexer definition. These functions have the same names as the entry points.
Lexing functions take as argument a lexer buffer, and return the semantic attribute of the corresponding entry point.
Lexer buffers are an abstract data type implemented in the standard library module Lexing. The functions Lexing.from_channel, Lex-
ing.from_string and Lexing.from_function create lexer buffers that read from an input channel, a character string, or any reading function,
respectively.
When used in conjunction with a parser generated by jocamlyacc(1), the semantic actions compute a value belonging to the type token defined
by the generated parsing module.
OPTIONS
The jocamllex(1) command recognizes the following options:
-o output-file
Specify the output file name output-file instead of the default naming convention.
-ml Output code that does not use the Caml built-in automata interpreter. Instead, the automaton is encoded by Caml functions. This
option is useful for debugging jocamllex(1), using it for production lexers is not recommended.
SEE ALSO jocamlyacc(1).
The Objective Caml user's manual, chapter "Lexer and parser generators".
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