The Second Futamura Projection for Type-Directed Partial Evaluation

Bernd Grobauer, Zhe Yang
2000 BRICS Report Series  
A generating extension of a program specializes the program with respect to part of the input. Applying a partial evaluator to the program trivially yields a generating extension, but specializing the partial evaluator with respect to the program often yields a more efficient one. This specialization can be carried out by the partial evaluator itself; in this case, the process is known as the second Futamura projection. We derive an ML implementation of the second Futamura projection for
more » ... rected Partial Evaluation (TDPE). Due to the differences between 'traditional', syntax-directed partial evaluation and TDPE, this derivation involves several conceptual and technical steps. These include a suitable formulation of the second Futamura projection and techniques for making TDPE amenable to self-application. In the context of the second Futamura projection, we also compare and relate TDPE with conventional offline partial evaluation.<br />We demonstrate our technique with several examples, including<br />compiler generation for Tiny, a prototypical imperative language.
doi:10.7146/brics.v7i44.20211 fatcat:mktkfflbubb57ddqozs2ggcdiq