Abstract

Despite vast interest in design patterns, the specification and application of patterns is generally assumed to rely on manual implementation. We describe a precise method of specifying how a design pattern is applied: by phrasing it as an algorithm in a meta-programming language. We present a prototype of a tool that supports the specification of design patterns and their realization in a given program. Our prototype allows automatic application of design patterns without obstructing the source code text from the programmer, whom may edit it at will. We demonstrate pattern specification in meta-programming techniques and a sample outcome of its application. Keywords: Application of design patterns, tool support for design patterns, metaprogramming i Also available at: http://www.math.tau.ac.il/~eden/precise_specification_and_automatic_application_of_d esign_patterns.{ps.Z,rtf.zip} ii Supported in part by the German-Israeli Foundation for Scientific Research and Development (GIF) an...

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