Parsing mixfix operators
Paper in proceedings, 2011
A simple grammar scheme for expressions containing mixfix operators is presented. The scheme is parameterised by a precedence relation which is only restricted to be a directed acyclic graph; this makes it possible to build up precedence relations in a modular way. Efficient and simple implementations of parsers for languages with user-defined mixfix operators, based on the grammar scheme, are also discussed. In the future we plan to replace the support for mixfix operators in the language Agda with a grammar scheme and an implementation based on this work. © 2011 Springer-Verlag.