Der Fortran-Parser Paff als wiederverwendbares Modul für Programmier-Tools

This paper presents a portable parser for the programming language FORTRAN, thetodays dominant computer language in the scientific world. This parser is a basis forforthcoming programming tools dedicated to support the programmer in the area ofsupercomputing to develop new applications and to utilize the installed supercomputinghardware in the Zentralinstitut für Angewandte Mathematik of the KFA Jülich,currently a Cray Y-MP/832 and a Cray X-MP/416. The parser is itself written inportable C and is as fast as commercial mainframe compilers.After giving an introduction to programming languages and the role of parsers therequirements of a parser adequate for our purposes in the area of tools forsupercomputing are given. Then the overall description of PAFF, the portable and flexibleFORTRAN parser, is shown from a user level. In the appendix is documented adetailled technical description of PAFF