REx Parser Generator

For running REx, an input file is required and command line options can be specified. Select input file, enter command line options, and click "Generate" to run REx. Click "configure" for command line configuration.

Input file:
Command line: configure

Sample grammars

Syntax diagrams

Paste or load grammar here.

Grammar conversion

Paste foreign grammar here.

Command line client

Use instead of this form for invoking REx from a command shell.


Fragments of REx source code, that are contained in generated parsers, are supplied under the Apache 2.0 license. See LICENSE.txt.

REx v5.56.2208, January 22, 2023
© 1979-2023 Gunther Rademacher