Markus Forsberg, Peter Gammie, Michael Pellauer and Aarne Ranta
  March 2005

News

• 23/03 2005 Release of BNF Converter v.2.2. New features are: Java 1.5 support, XML generation, Generalized LR for Happy and a GF-to-BNFC translation support.
  
  
• 05/04 2004 A minor bug-fix release. The requirement of Alex.hs has been removed from the Haskell backend. Patch supplied by Antti-Juhani Kaijanaho.
• BNF Converter has now been accepted to the unstable distribution of Debian.
  More information here.
• 08/03 2004 Release of BNF Converter version 2.1. Alex v2.0 support and bug fixes.
• 22/10 2003 Release of BNF Converter version 2.0, generating four languages.
  

  What is the BNF Converter?

  The BNF Converter is a compiler construction tool generating a compiler front-end from a Labelled BNF grammar. It was originally written to generate Haskell, but starting from Version 2.0, it can also be used for generating Java, C++, and C.

  Given a Labelled BNF grammar the tool produces:

  • an abstract syntax as a Haskell/C++/C module or Java directory
  • a case skeleton for the abstract syntax in the same language
  • an Alex, JLex, or Flex lexer generator file
  • a Happy, CUP, or Bison parser generator file
  • a pretty-printer as a Haskell/Java/C++/C module
  • a Latex file containing a readable specification of the language

  User manuals

  • Report on the LBNF formalism: LBNF-report.ps
  • Quick Start
  • Haskell Mode
  • GLR Mode
    
  • Java Mode
  • C Mode
  • C++ Mode
  • XML Mode

  Downloads

  Source code: BNFC_2.2.tgz

  Report on the LBNF formalism: LBNF-report.ps

  Example grammars

  A grammar of C. An example C file parsable in type Program.

  A grammar of Alfa (For more details, see the Alfa home page.)

  A grammar of LBNF. It is at the same time an example LBNF file, parsable in type Grammar. This grammar is used in the implementation of the BNF Converter.
  
  A grammar of Java 1.1 developed by Mike Rainey

  Earlier versions

  v2.1 source code with examples: bnfc_2.1.tgz

  v2.0 source code with examples: bnfc_2.0.tgz

  v1.3 source code with examples: bnfc_1.3.tar

  v1.0, source code with examples: bnf_conv.tgz