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OCAMLLEX(1) General Commands Manual OCAMLLEX(1) NAME ocamllex - The OCaml lexer generator SYNOPSIS ocamllex [ -o output-file ] [ -ml ] filename.mll DESCRIPTION The ocamllex(1) command generates OCaml lexers from a set of regular ex- pressions with associated semantic actions, in the style of lex(1). Running ocamllex(1) on the input file lexer.mll produces OCaml code for a lexical analyzer in file lexer.ml. This file defines one lexing function per entry point in the lexer defini- tion. These functions have the same names as the entry points. Lexing func- tions 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, Lexing.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 ocamlyacc(1), the se- mantic actions compute a value belonging to the type token defined by the generated parsing module. OPTIONS The ocamllex(1) command recognizes the following options: -ml Output code that does not use OCaml's built-in automata interpreter. Instead, the automaton is encoded by OCaml functions. This option is mainly useful for debugging ocamllex(1), using it for production lexers is not recommended. -o output-file Specify the name of the output file produced by ocamllex(1). The default is the input file name, with its extension replaced by .ml. -q Quiet mode. ocamllex(1) normally outputs informational messages to standard output. They are suppressed if option -q is used. -v or -version Print version string and exit. -vnum Print short version number and exit. -help or --help Display a short usage summary and exit. SEE ALSO ocamlyacc(1). The OCaml user's manual, chapter "Lexer and parser generators". OCAMLLEX(1)
NAME | SYNOPSIS | DESCRIPTION | OPTIONS | SEE ALSO
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