. Aspect-oriented programming provides the programmer with means to cross-cut conventional program structures, in particular the class hierarchies of object-oriented programming. This paper studies the use of aspect orientation in structuring syntax directed compilers implemented as attribute grammars. Specifically, it describes a method for specifying definitions of related attributes as `aspects' and treating them as first-class objects, that can be stored, manipulated and combined. It is hoped that this embedding of an aspect-oriented programming style in Haskell provides a stepping stone towards a more general study of the semantics of aspect-oriented programming. 1 Introduction Compilers are often structured by recursion over the abstract syntax of the source language. For each production in the abstract syntax, one defines a function that specifies how a construct is to be translated. The method of structuring compilers in this syntax--directed manner underlies the for...

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