A parser generator for Cincom® Visualworks®.
T-Gen is a general-purpose object-oriented tool for the automatic generation of string-to-object translators. T-gen supports the generation of both top-down (LL) and bottom-up (LR) parsers, which will automatically generate derivation trees, abstract syntax trees, or arbitrary Smalltalk objects. The simple specification syntax and graphical user interface are intended to enhance the learning, comprehension, and usefulness of T-gen.
See also: http://st-www.cs.uiuc.edu/users/droberts/tgen2.2.1/tgen.html.