gen-renamed-sdf-module — generates an SDF module that renames all SDF sorts in a given SDF definition.


gen-renamed-sdf-module [-m mod | --main mod] [--name mod] [--prefix id] [--scheme [...]] [-i file | --input file] [-o file | --output file] [-b] [-S | --silent] [--verbose level] [-k level | --keep level] [-h | -? | --help] [--about] [--version]


The gen-renamed-sdf-module utility is used to generate modules where sorts are either prefixed (with the --prefix option) or renamed (using the --scheme option).

This tool is useful for concrete object syntax embeddings, where the sorts in the embedded language syntax definitions must be renamed before being imported into the host language, so as to avoid name space conflicts between the two syntax declarations. For example, both the embedded and the host language may declare an Exp sort.


Grammar Options

-m mod, --main mod

Use mod as the main module in the SDF definition. By default, this is Main.

--name mod

Name of the resulting module. This option is mandatory.

--prefix id

Prefix all sort names with id.

--scheme [...]

Rename the sorts according to the scheme in [...].

Common Input/Output Options

-i file

The input term given by the file name file.

In the absence of the -i option, input will be read from stdin.

-o file

The output will be written to the file given by the file name file.

In the absence of the -o option, output will be written to stdout.


The output will be written in the binary (BAF) ATerm format.

ATerms in the BAF format require a lot less space than ones in the TAF format, but the Java ATerm library does not currently support baf ATerms. ATerms in the baf format is the preferred format of exchange between Stratego tools.

Common Debugging Options


See --version.

-h, -?, --help

Display usage information.

--keep int

Keep intermediate results produced by the internal stages in the pretty-printing process. This is only useful for debugging. A high value of int indicates increased eagerness for keeping intermediate results.

Default setting is 0, indicating that no intermediates will be kept.

-S, --silent

Silent execution. Same as --verbose 0.

--verbose int

Set verbosity level to numerical value int. The higher the number, the more information about pp-aterm's inner workings are printed.

Alternatively, int can be set to either of the following verbosity levels, given in increasing order of verbosity: emergency, alert, critical, error, warning, notice, info, debug, vomit.


Displays the tool name and version.


Consider the following syntax definition.

  module Expressions
  imports Identifiers [Id => MyId]
    sorts Exp
  context-free syntax
    Id        -> Exp {cons("Var")}
    IntConst  -> Exp {cons("Int")}
    Exp "+"  Exp -> Exp  {left, cons("Plus")}

  module Identifiers
    sorts Id
  lexical syntax
    [a-zA-Z]+ -> Id  

By applying gen-renamed-sdf-module as follows, all sorts will be prefixed by Exp.

$ gen-renamed-sdf-module -i Exp.def -m Expressions --name Exp-Prefixed --prefix Exp

The generated definition is:

  module Exp-Prefixed
  imports Expressions
    [ IntConst => ExpIntConst
      MyId     => ExpMyId
      Exp      => ExpExp ]

Reporting Bugs

Please report bugs to


Copyright (C) 2002-2005 Eelco Visser

This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.