Journal of Functional Programming


Higher-order functions for parsing*

Graham Huttona1

a1 Department of Computing Science, University of Glasgow (graham@cs.chalmers. se)


In combinator parsing, the text of parsers resembles BNF notation. We present the basic method, and a number of extensions. We address the special problems presented by white-space, and parsers with separate lexical and syntactic phases. In particular, a combining form for handling the ‘offside rule’ is given. Other extensions to the basic method include an ‘into’ combining form with many useful applications, and a simple means by which combinator parsers can produce more informative error messages.