Stratego/XT

Stratego/XT

Infobox Software
name = Stratego/XT



caption =
developer =
latest release version =
latest release date =
latest preview version =
latest preview date =
operating system = Cross-platform
platform =
genre = program transformation system
license = LGPL
website = http://www.strategoxt.org

Stratego/XT is a language and toolset for constructing stand-alone program transformation systems. It combines the "Stratego" transformation language with the "XT" toolset of transformation components, providing a framework for constructing stand-alone
program transformation systems. The Stratego language is based around a programming paradigm called "strategic term rewriting". It provides "rewrite rules" for expressing basic transformation steps. The application of these rules can be controlled using "strategies", a form of subroutines. The XT toolset provides reusable transformation components and declarative languages for deriving new components, such as parsing grammars using the Modular Syntax Definition Formalism (SDF) and implementing pretty-printing.

Concrete syntax

Program transformations often operate by modifying the abstract syntax tree (AST). In Stratego it is also possible to specify transformations using concrete syntax. [ [http://www.program-transformation.org/Stratego/MetaProgrammingWithConcreteObjectSyntax Meta-programming with concrete object syntax] ] This allows programmers to express a transformation using the familiar (and often more concise) syntax of the object programming language, while it internally still operates on the AST.

Examples

A rule to desugar a do-while statement in Java: [Using the [http://www.program-transformation.org/Stratego/JavaFront Java-front] syntax definition] desugar : While(e, stm) -> If(e, DoWhile(stm, e))

The same rule, using concrete syntax: desugar : | [ while (e) stm; ] | -> | [ if (e) do stm while(e); ]

See also

* ASF+SDF Meta Environment
* Program transformation
* Source code generation

Notes

External links

* [http://www.strategoxt.org strategoxt.org]
* [http://www.program-transformation.org Program-transformation.org]
* [http://buildfarm.st.ewi.tudelft.nl/releases/strategoxt/strategoxt-manual-unstable-latest/manual/ The Stratego Manual]
* [http://www.strategoxt.org/Stratego/StrategoPublications Stratego Publications]


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