https://wiki.haskell.org/index.php?title=KURE&feed=atom&action=history
KURE - Revision history
2024-03-19T04:38:50Z
Revision history for this page on the wiki
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https://wiki.haskell.org/index.php?title=KURE&diff=64541&oldid=prev
Atravers: Webpage "...kure.php" no longer exists...
2021-07-12T00:27:07Z
<p>Webpage "...kure.php" no longer exists...</p>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>KURE (pronounced cure) is a Haskell hosted Domain Specific Language (DSL) for writing transformation systems based on rewrite strategies. When writing transformation systems, a significant amount of engineering effort goes into setting up plumbing to make sure that specific rewrite rules can fire. Systems like Stratego and Strafunski provide most of this plumbing as infrastructure, allowing the DSL user to focus on the rewrites rules. KURE is a strongly typed strategy control language in the tradition of Stratego and Strafunski. It is intended for writing reasonably efficient rewrite systems, makes use of type families to provide a delimited generic mechanism for tree rewriting, and provides support for efficient identity rewrite detection.</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>KURE (pronounced cure) is a Haskell hosted Domain Specific Language (DSL) for writing transformation systems based on rewrite strategies. When writing transformation systems, a significant amount of engineering effort goes into setting up plumbing to make sure that specific rewrite rules can fire. Systems like Stratego and Strafunski provide most of this plumbing as infrastructure, allowing the DSL user to focus on the rewrites rules. KURE is a strongly typed strategy control language in the tradition of Stratego and Strafunski. It is intended for writing reasonably efficient rewrite systems, makes use of type families to provide a delimited generic mechanism for tree rewriting, and provides support for efficient identity rewrite detection.</div></td>
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Atravers
https://wiki.haskell.org/index.php?title=KURE&diff=25318&oldid=prev
AndyGill at 16:06, 29 December 2008
2008-12-29T16:06:27Z
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 16:06, 29 December 2008</td>
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AndyGill
https://wiki.haskell.org/index.php?title=KURE&diff=25264&oldid=prev
AndyGill at 04:45, 28 December 2008
2008-12-28T04:45:33Z
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>KURE (pronounced cure) is a Haskell hosted Domain Specific Language (DSL) for writing transformation systems based on rewrite strategies. When writing transformation systems, a significant amount of engineering effort goes into setting up plumbing to make sure that specific rewrite rules can fire. Systems like Stratego and Strafunski provide most of this plumbing as infrastructure, allowing the DSL user to focus on the rewrites rules. KURE is a strongly typed strategy control language in the tradition of Stratego and Strafunski. It is intended for writing reasonably efficient rewrite systems, makes use of type families to provide a delimited generic mechanism for tree rewriting, and provides support for efficient identity rewrite detection.</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>KURE (pronounced cure) is a DSL for writing rewrite systems over grammars with scope. It was used (along with Template Haskell) to provide the basic rewrite abilities inside [[Hera| HERA]]. It has been recently rewritten and will be published on hackage shortly. KURE provides combinators for ordering the application of an abstract type, Rewrite, combinators for building primitive rewrites, and combinators performing rewrite searches. KURE will be used to power the next version of [[Hera| HERA]].</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>KURE was used (along with Template Haskell) to provide the basic rewrite abilities inside [[Hera| HERA]]. It was rewritten in late 2008, and is published on hackage. KURE will be used to power the next version of [[Hera| HERA]],</div></td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Further details can be found at the webpage</div></td>
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<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Simplified, the basic type is Rewrite</div></td>
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<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>choose :: (exp -> Rewrite exp) -> Rewrite exp</div></td>
<td colspan="2" class="diff-empty"> </td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div></hask></div></td>
<td colspan="2" class="diff-empty"> </td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"></td>
<td colspan="2" class="diff-empty"> </td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Because Rewrite is abstract, we can only <b>look</b> at exp, can choose what to apply, not actually use the exp argument in our result.</div></td>
<td colspan="2" class="diff-empty"> </td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"></td>
<td colspan="2" class="diff-empty"> </td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>== Primitive Rewrites ==</div></td>
<td colspan="2" class="diff-empty"> </td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"></td>
<td colspan="2" class="diff-empty"> </td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>There are also ways of providing primitives, promoting a monadic rewrite into an abstract Rewrite.</div></td>
<td colspan="2" class="diff-empty"> </td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"></td>
<td colspan="2" class="diff-empty"> </td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><hask></div></td>
<td colspan="2" class="diff-empty"> </td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>data RewriteM exp = ...</div></td>
<td colspan="2" class="diff-empty"> </td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>rewrite :: (exp -> RewriteM exp) -> Rewrite exp</div></td>
<td colspan="2" class="diff-empty"> </td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div></hask></div></td>
<td colspan="2" class="diff-empty"> </td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"></td>
<td colspan="2" class="diff-empty"> </td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>and a method for promoting a Rewrite into a RewriteM rewrite, allowing the authorship of abstraction breaking primitives in terms of other abstract rewrites, if required.</div></td>
<td colspan="2" class="diff-empty"> </td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"></td>
<td colspan="2" class="diff-empty"> </td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><hask></div></td>
<td colspan="2" class="diff-empty"> </td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>apply :: Rewrite exp -> exp -> RewriteM exp</div></td>
<td colspan="2" class="diff-empty"> </td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div></hask></div></td>
<td colspan="2" class="diff-empty"> </td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"></td>
<td colspan="2" class="diff-empty"> </td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>== Searching ==</div></td>
<td colspan="2" class="diff-empty"> </td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"></td>
<td colspan="2" class="diff-empty"> </td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>The library also provides ways of searching for places to applying rewrite rules inside syntax trees, allowing KURE to be used as a nanopass engine for compilation or optimization. Rewrites (or combinations of rewrites) can be applied in a prefix or postfix order.</div></td>
<td colspan="2" class="diff-empty"> </td>
</tr>
</table>
AndyGill
https://wiki.haskell.org/index.php?title=KURE&diff=24573&oldid=prev
AndyGill at 17:08, 8 December 2008
2008-12-08T17:08:15Z
<p></p>
<table class="diff diff-contentalign-left diff-editfont-monospace" data-mw="interface">
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 17:08, 8 December 2008</td>
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<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Combinators]] </div></td>
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<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del class="diffchange diffchange-inline">Kansas</del> <del class="diffchange diffchange-inline">University Rewrite Engine</del> (<del class="diffchange diffchange-inline">KURE, </del>pronounced cure) is a DSL for writing rewrite systems over grammars with scope. It was used (along with Template Haskell) to provide the basic rewrite abilities inside [[Hera| HERA]]. It has been recently rewritten and will be published on hackage shortly. KURE provides combinators for ordering the application of an abstract type, Rewrite, combinators for building primitive rewrites, and combinators performing rewrite searches. KURE will be used to power the next version of [[Hera| HERA]].</div></td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins class="diffchange diffchange-inline">KURE</ins> (pronounced cure) is a DSL for writing rewrite systems over grammars with scope. It was used (along with Template Haskell) to provide the basic rewrite abilities inside [[Hera| HERA]]. It has been recently rewritten and will be published on hackage shortly. KURE provides combinators for ordering the application of an abstract type, Rewrite, combinators for building primitive rewrites, and combinators performing rewrite searches. KURE will be used to power the next version of [[Hera| HERA]].</div></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Basic Combinators == </div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Basic Combinators == </div></td>
</tr>
</table>
AndyGill
https://wiki.haskell.org/index.php?title=KURE&diff=24571&oldid=prev
AndyGill: Kansas University Rewrite Engine moved to KURE
2008-12-08T17:07:17Z
<p>Kansas University Rewrite Engine moved to KURE</p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 17:07, 8 December 2008</td>
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AndyGill
https://wiki.haskell.org/index.php?title=KURE&diff=23839&oldid=prev
AndyGill at 05:03, 3 November 2008
2008-11-03T05:03:59Z
<p></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 05:03, 3 November 2008</td>
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<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Combinators]] </div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[Category:Combinators]] </div></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Kansas University Rewrite Engine (KURE, pronounced cure) is a DSL for writing rewrite systems over grammars with scope. It was used (along with Template Haskell) to provide the basic rewrite abilities inside [[Hera| HERA]]. It has been recently rewritten and will be published on hackage shortly. KURE provides combinators for ordering the application of an abstract type, Rewrite, combinators for building primitive rewrites, and combinators performing rewrite searches. KURE will be used to<del class="diffchange diffchange-inline"> automate and further explore the worker/wrapper transformation, as well</del> power the next version of [[Hera| HERA]].</div></td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Kansas University Rewrite Engine (KURE, pronounced cure) is a DSL for writing rewrite systems over grammars with scope. It was used (along with Template Haskell) to provide the basic rewrite abilities inside [[Hera| HERA]]. It has been recently rewritten and will be published on hackage shortly. KURE provides combinators for ordering the application of an abstract type, Rewrite, combinators for building primitive rewrites, and combinators performing rewrite searches. KURE will be used to power the next version of [[Hera| HERA]].</div></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Basic Combinators == </div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>== Basic Combinators == </div></td>
</tr>
</table>
AndyGill
https://wiki.haskell.org/index.php?title=KURE&diff=23754&oldid=prev
AndyGill at 20:47, 31 October 2008
2008-10-31T20:47:27Z
<p></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 20:47, 31 October 2008</td>
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<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"></td>
</tr>
<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><hask></div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div><hask></div></td>
</tr>
<tr>
<td class="diff-marker">−</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>data <del class="diffchange diffchange-inline">Rewrite</del> exp = ...</div></td>
<td class="diff-marker">+</td>
<td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>data <ins class="diffchange diffchange-inline">RewriteM</ins> exp = ...</div></td>
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<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>rewrite :: (exp -> RewriteM exp) -> Rewrite exp</div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>rewrite :: (exp -> RewriteM exp) -> Rewrite exp</div></td>
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<tr>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div></hask></div></td>
<td class="diff-marker"> </td>
<td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div></hask></div></td>
</tr>
</table>
AndyGill
https://wiki.haskell.org/index.php?title=KURE&diff=23753&oldid=prev
AndyGill: Adding KURE
2008-10-31T20:46:30Z
<p>Adding KURE</p>
<p><b>New page</b></p><div>[[Category:Program transformation]] <br />
[[Category:Packages]]<br />
[[Category:Combinators]] <br />
<br />
Kansas University Rewrite Engine (KURE, pronounced cure) is a DSL for writing rewrite systems over grammars with scope. It was used (along with Template Haskell) to provide the basic rewrite abilities inside [[Hera| HERA]]. It has been recently rewritten and will be published on hackage shortly. KURE provides combinators for ordering the application of an abstract type, Rewrite, combinators for building primitive rewrites, and combinators performing rewrite searches. KURE will be used to automate and further explore the worker/wrapper transformation, as well power the next version of [[Hera| HERA]].<br />
<br />
== Basic Combinators == <br />
<br />
Simplified, the basic type is Rewrite<br />
<br />
<hask><br />
data Rewrite exp = ...<br />
</hask><br />
<br />
with methods to help order Rewrites.<br />
<br />
<hask><br />
-- do the first rewrite, and the second.<br />
(>+>) :: Rewrite exp -> Rewrite exp -> Rewrite exp<br />
-- do the first rewrite, then second iff the first changed something.<br />
(>&>) :: Rewrite exp -> Rewrite exp -> Rewrite exp<br />
-- do the first rewrite, then second iff the first did not change anything.<br />
(>|>) :: Rewrite exp -> Rewrite exp -> Rewrite exp<br />
-- id rewrite, does not change anything.<br />
nullRewrite :: Rewrite exp<br />
-- repeat the application of rewrites until no more are possible.<br />
many :: Rewrite exp -> Rewrite exp<br />
</hask><br />
<br />
None of these methods can actually choose based on the internals of the expression, so we have a combinator that can choose.<br />
<br />
<hask><br />
choose :: (exp -> Rewrite exp) -> Rewrite exp<br />
</hask><br />
<br />
Because Rewrite is abstract, we can only <b>look</b> at exp, can choose what to apply, not actually use the exp argument in our result.<br />
<br />
== Primitive Rewrites ==<br />
<br />
There are also ways of providing primitives, promoting a monadic rewrite into an abstract Rewrite.<br />
<br />
<hask><br />
data Rewrite exp = ...<br />
rewrite :: (exp -> RewriteM exp) -> Rewrite exp<br />
</hask><br />
<br />
and a method for promoting a Rewrite into a RewriteM rewrite, allowing the authorship of abstraction breaking primitives in terms of other abstract rewrites, if required.<br />
<br />
<hask><br />
apply :: Rewrite exp -> exp -> RewriteM exp<br />
</hask><br />
<br />
== Searching ==<br />
<br />
The library also provides ways of searching for places to applying rewrite rules inside syntax trees, allowing KURE to be used as a nanopass engine for compilation or optimization. Rewrites (or combinations of rewrites) can be applied in a prefix or postfix order.</div>
AndyGill