Transformation program structure

Foresys is a product distributed by Simulog for the manipulation of Fortran codes. This document does not claim to describe Foresys but TSF (Tool Set for Fortran), one of its extensions (see figure 1). Foresys makes it possible to carry out many operations on Fortrans codes (translation to the new F90 standard, dependences analysis, ...). These tasks, although very interesting, do not always meet the user's needs. The TSF window is connected to one of the Foresys windows displaying the code of a Fortran unit (a function, a subroutine, a module, ...). This graphical interface provides two basical actions for final users.

• The application of simple scripts to various target ; the current selection, the full unit or the full Forlib¹. This last functionnality is still experimental and is not fully implemented. The scripting language is quite simple and is dedicated to the manipulation of fortran codes. It provides some simple ways to transform and to get informations in fortran codes. To be executed, the simple scripting language must translated into the lisp dialect used internaly by Foresys. The user does not have to be concerned with this complex phase.
• The matching of a piece of Fortran code in the currently connected unit window according to a pattern (i.e. a model). The pattern can be generated automatically from a piece of fortran program or can be written in the pattern language (see section 11 for more details on the pattern language). The pattern is also used to check the validity of the selection before applying the associated script.

The scripts and the patterns are stored into external files with some additionnal informations (user's documentation, author, ...). The TSF interface provides some facilities to edit those informations but the file format is sufficiently simple so that the manual edition is possible. Several categories, each one being defined by a file, can be used simultaneously.

  

Figure 1: The internal structure of FORESYS/TSF