jonathanschilling / f2j

Fortran-to-Java translator, especially for BLAS, LAPACK and ARPACK

Fortran-to-Java Source Code

Version 0.8.1 June 30, 2008

The old Fortran to Java CVS repository was migrated to this Git repository:

rsync -ai a.cvs.sourceforge.net::cvsroot/f2j/ cvs2git-f2j
cd cvs2git-f2j
cvs2git --blobfile=blob.dat --dumpfile=dump.dat \
    --username=keithseymour --default-eol=native \
    --encoding=utf8 --encoding=latin1 --fallback-encoding=ascii \
    .
cd ..
mkdir f2j
cd f2j
git init
cat ../cvs2git-f2j/blob.dat ../cvs2git-f2j/dump.dat | git fast-import
git remote add origin [email protected]:jonathanschilling/f2j.git
git checkout
git push origin --mirror
mv f2j/* .
rm -r CVSROOT
git add .
git commit -m "one folder less"
git branch --set-upstream-to=origin/master master
git pull
git push

---

Before using the f2j source code, realize that f2j was originally geared to a very specific problem - that is, translating the LAPACK and BLAS numerical libraries. f2j does not and probably never will handle all Fortran code.

Building the code

./configure
make

and optionally:

make install

For more details, see the f2j manual.

f2j's Issues

convert gotos into "normal" code

GOTO statements should be easy to translate into "normal" code with if/else and do/while.
Cite Dijkstra why one should do this: A case against the GO TO statement.
Here is an article on this: http://www.cs.unibo.it/~martini/PP/bohm-jac.pdf

Migrate code translation to ANTLR

This repository contains a branch named rewrite-using-antlr4 where I started to write a Java code using ANTLR4 to do the translation from Fortran to Java. The main entry file is FortranHandlerPrototype.java.

The following steps are needed:

• implement methods in FortranListener.java that create an object-oriented AST
• implement methods to unparse that AST into Java (possibly including the Dummy class for handling GOTOs for now)
• run this on all BLAS methods
• use Maven plugin (what's its name again?) to do the bytecode replacements from Dummy.goto() and Dummy.label() into JVM GOTOs
• use above mechanics to also translate BLAS test suite

add topics

I suggest adding topics such as fortran77, fortran, java, lapack, transpiler in the About section at https://github.com/jonathanschilling/f2j.