NAME

       ocamlyacc - The OCaml parser generator

SYNOPSIS

       ocamlyacc [ -bprefix ] [ -q ] [ -v ] [ -version ] [ -vnum ] filename.mly

DESCRIPTION

       The   ocamlyacc(1)   command  produces  a  parser  from  a  LALR(1)  context-free  grammar
       specification with attached semantic actions, in the style of yacc(1).  Assuming the input
       file  is  grammar.mly,  running  ocamlyacc  produces  OCaml  code for a parser in the file
       grammar.ml, and its interface in file grammar.mli.

       The generated module defines one parsing function per entry point in  the  grammar.  These
       functions  have the same names as the entry points.  Parsing functions take as arguments a
       lexical analyzer (a function from lexer buffers to tokens) and a lexer buffer, and  return
       the  semantic  attribute  of the corresponding entry point. Lexical analyzer functions are
       usually generated from a lexer specification by the ocamllex(1) program. Lexer buffers are
       an abstract data type implemented in the standard library module Lexing. Tokens are values
       from the concrete type token, defined  in  the  interface  file  grammar.mli  produced  by
       ocamlyacc(1).

OPTIONS

       The ocamlyacc(1) command recognizes the following options:

       -bprefix
              Name  the output files prefix.ml, prefix.mli, prefix.output, instead of the default
              naming convention.

       -q     This option has no effect.

       -v     Generate a description of the parsing tables and a report  on  conflicts  resulting
              from ambiguities in the grammar. The description is put in file grammar.output.

       -version
              Print version string and exit.

       -vnum  Print short version number and exit.

       -      Read  the grammar specification from standard input.  The default output file names
              are stdin.ml and stdin.mli.

       -- file
              Process file as the grammar specification, even if its name starts with a dash  (-)
              character.  This option must be the last on the command line.

SEE ALSO

       ocamllex(1).
       The OCaml user's manual, chapter "Lexer and parser generators".

                                                                                     OCAMLYACC(1)