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MLton
20241230
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<h1>SXML</h1>
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<p><a href="#">SXML</a> is an <a href="IntermediateLanguage">IntermediateLanguage</a>, translated from <a href="XML">XML</a> by
<a href="Monomorphise">Monomorphise</a>, optimized by <a href="SXMLSimplify">SXMLSimplify</a>, and translated by
<a href="ClosureConvert">ClosureConvert</a> to <a href="SSA">SSA</a>.</p>
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<h2 id="_description">Description</h2>
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<p>SXML is a simply-typed version of <a href="XML">XML</a>.</p>
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<h2 id="_implementation">Implementation</h2>
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<p><a href="https://github.com/MLton/mlton/blob/master/mlton/xml/sxml.sig"><code>sxml.sig</code></a></p>
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<p><a href="https://github.com/MLton/mlton/blob/master/mlton/xml/sxml.fun"><code>sxml.fun</code></a></p>
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<p><a href="https://github.com/MLton/mlton/blob/master/mlton/xml/sxml-tree.sig"><code>sxml-tree.sig</code></a></p>
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<h2 id="_type_checking">Type Checking</h2>
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<p><a href="#">SXML</a> shares the type checker for <a href="XML">XML</a>.</p>
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<h2 id="_details_and_notes">Details and Notes</h2>
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<p>There are only two differences between <a href="XML">XML</a> and <a href="#">SXML</a>.  First,
<a href="#">SXML</a> <code>val</code>, <code>fun</code>, and <code>datatype</code> declarations always have an
empty list of type variables.  Second, <a href="#">SXML</a> variable references
always have an empty list of type arguments.  Constructors uses can
only have a nonempty list of type arguments if the constructor is a
primitive.</p>
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<p>Although we could rely on the type system to enforce these constraints
by parameterizing the <a href="XML">XML</a> signature, <a href="StephenWeeks">StephenWeeks</a> did so in a
previous version of the compiler, and the software engineering gains
were not worth the effort.</p>
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Last updated Thu Oct 21 15:53:06 2021 -0400 by Matthew Fluet.
<a href="https://github.com/MLton/mlton/commits/master/doc/guide/src/SXML.adoc">Log</a>
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