Building LL (1) parsers with VAST. Second usability and educational evaluation

Abstract

VAST is an educational tool to use in subjects as compilers and language processors which allows to display the syntax tree. Its main feature is that can be used independent from the generation tool used to build the parser. This makes possible to visualize and animate the syntax tree generated by the parser. In this work we describe the second usability and educational evaluation using VAST comparing the results with ANTLR and ANTLRworks