jocamlyacc - The JoCaml parser generator
jocamlyacc [ -v ] [ -bprefix ] filename.mly
The jocamlyacc(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 jocamlyacc
produces Caml 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 jocamllex(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
The jocamlyacc(1) command recognizes the following options:
-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.
Name the output files prefix.ml, prefix.mli, prefix.output,
instead of the default naming convention.
The Objective Caml users manual, chapter "Lexer and parser