FACTOR (Fairchild Sentry VIII Tester Language) SYNTAX Checker/Analyzer
Original Publication Date: 1985-Dec-01
Included in the Prior Art Database: 2005-Feb-19
By providing quick feedback of syntax errors of a FACTOR program on a system which is independent of the single user target computing system (Sentry VIII), a significant reduction in the amount of development time of test programs is realized. Since it allows multiple programs to be developed and syntax checked on an IBM system, the Sentry VIII system is free to do its primary job of testing integrated circuits. This article describes a grammar parser written to accept the FACTOR programming language developed by Schlumberger Fairchild. The parser has been implemented in PL/1 and 370 Assembler languages. It is a bottom-up parser which is based upon a grammar in "Backus-Naur Form" (BNF) and has 4 basic parts which allow the parsing algorithm to be accomplished. These are as follows: A.