Home of ASDL I'm in the process of migrating the ASDL webpages from the old site. For a current version of ASDL checkout the CVS repository. Introduction The Zephyr Abstract Syntax Description Lanuguage (ASDL) is a language designed to describe the tree-like data structures in compilers. Its main goal is to provide a method for compiler components written in different languages to interoperate. AS