PreForM

"A very simple and stupid preprocessor for modern Fortran projects.

PreForM.py supports the most used cpp pre-processing directives and provides advanced features typical of templating systems. Even if PreForM.py is currently Fortran-agnostic (it being usable within any programming languages) it is focused on Fortran programming language.

The features are:

Easy-extensible: PreForM.py is just a less-than 500 lines of Python statements... no bad for a poor-cpp-preprocessor improvement;

well integrated with a powerful yet simple automatic Building System for Fortran poor-men, namely FoBiS.py;

simple command line interface;

support the most used cpp pre-processing directives:

• conditionals:
  • operators (also nested):
    • defined MACRO or defined(MACRO);
    • EXPRESSION || EXPRESSION (logic or);
    • EXPRESSION && EXPRESSION (logic and);
  • #if EXPRESSION;
  • #elif EXPRESSION;
  • #ifdef MACRO;
  • #ifndef MACRO;
  • #else;
  • #endif;
• macros:
  • standard predefined macros:
    • __FILE__;
    • __LINE__;
    • __DATE__;
    • __TIME__;
  • expansion;
  • stringification;
  • concatenation;
  • variadic macros;
  • object-like macros:
    • #define MACRO [VALUE], VALUE is optional;
  • function-like macros:
    • #define FUNCTION FUNCTION_DEFINITION;
  • #undef;
• #include;

pythonic Template System:

• #PFM for EXPRESSION-#PFM endfor pairs loop control (only for one iteration counter at time

Note that in general the cpp pre-processing directives should start at the first column, the symbol # being the first one. PreForM.py relaxes this rule allowing any number of leading white spaces before #.

https://github.com/szaghi/PreForM