Antlr4 Grammer for Fortran 90/95

[AkhilAkkapelli]

Can someone add a Antlr4 grammar for Fortran 90/95 or any above version of Fortran to the repository as I am seeking it?

[kaby76]

As noted in the antlr-discussion thread, there are two grammars written, but neither have been submitted by the authors to the repo. The best would be to just scrape the grammar (by automated means) from the Spec, but that costs a lot of money.

• https://github.com/OpenFortranProject/open-fortran-parser. There's no grammar labeled with "90", and no clear cut segregation of the different grammars to know how this is organized.
• https://github.com/cyrillemidingoyi/PyCropML/blob/master/src/pycropml/transpiler/antlr_py/grammars/Fortran90Parser.g4; https://github.com/cyrillemidingoyi/PyCropML/blob/master/src/pycropml/transpiler/antlr_py/grammars/Fortran90Lexer.g4.

[AkhilAkkapelli]

@kaby76 Thank you for taking the time to respond to my email and offer some suggestions for finding the Lexer and Parser grammar for Fortran 90/95 using Antlr4.

I appreciate the links you have provided to the two grammars written. I will take a closer look at these and see if they meet the requirements of my project and see if they are helpful for my project.

Best regards
Akhil

[kaby76]

Please reopen. This is a "to do" item. Fortran version 90 and all the many others need to be added.

[kaby76]

This should now be closed. Implemented in #3501 and #3510