Fortran Translation Issues

FrontEndStructure

Redesign the Preprocessor

1. Preprocessor

1). Input: Raw char stream read from source files

2). Output: A pp-token stream

2. PP Token Converter

1). Input: A pp-token stream

2). Output: A CIVL-C token stream.

3). Functionality:

Based on a specific programming language (C/CIVL-C or Fortran), the convertor analyzes each pp-token and generates a corresponding !CIVLCToken for each of them.

3. Language Based Parser

1). Input: A CIVLCToken stream

2). Output: A CIVL parse tree

Meeting Notes for Fortran Front-End

01-08-2019

0). The preprocessor will only create and handle pp-tokens (preprocess tokens).

1). All language specific tokens & keywords should be created after the preprocess procedure.

2). Language grammar based converters (C/CIVL-C & Fortran) should be developed for generating CIVLC tokens from pp-tokens.

3). Different parsers will be used for pars the CIVL-C token stream

1). A detailed plan of adding, removing and changing class/grammar files

2). Preprocessor grammar: (Both Prep Lexer and Parser grammars in one file)

CIVLC Lexer grammar: (Mainly for debugging) Defines all CIVLC Tokens

PP2CIVLTokenConverter Converts a pp-token to a CIVLC token, or combine several into a single CIVLC token like ..

CIVLC Parser grammar: (Using CIVLC Token)

Fortran Parser grammar: (Using CIVLC Token)