Tigerseye is an extensible language embedding in Groovy based on the reflective embedding architecture (REA). REA embeds languages into reflective host languages, as Tigerseye exemplifies for Groovy. A reflective language is a special programming language with support for reflection that enables programs to reason about their structure and behavior. Specifically, there is support for introspection that allows analyzing programs, and support for intercession that allows transforming programs. Using reflection helps overcoming current limitations of language embedding, since it enables evolution of embedded languages by analyzing and transforming the language embedding itself.
