tame/core/map.xml

114 lines
3.3 KiB
XML

<?xml-stylesheet type="text/xsl" href="summary.xsl"?>
<!--
Brings c:case statements to life
The problem with cases is that they are so verbose for simple cases. This
makes simple cases simple.
-->
<lv:package
xmlns:lv="http://www.lovullo.com/rater"
xmlns:c="http://www.lovullo.com/calc"
xmlns:t="http://www.lovullo.com/rater/apply-template"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.lovullo.com/rater ../rater.xsd"
core="true"
name="map"
desc="Mapping templates/functions">
<lv:template name="_map-set_" desc="Map a set of values">
<lv:param name="@name@" desc="Param name" />
<lv:param name="@index@" desc="Index" />
<lv:param name="@values@" desc="Criteria (map nodes)" />
<lv:param name="@label@" desc="Case statement label">
<!-- default empty -->
<lv:text></lv:text>
</lv:param>
<lv:param name="@default@" desc="Default value" />
<c:cases label="@label@">
<lv:param-copy name="@values@">
<lv:param-meta name="map_param" value="@name@" />
<lv:param-meta name="map_index" value="@index@" />
</lv:param-copy>
<!-- TODO: allow setting default via @default or t:default or something
(or both) -->
<lv:if name="@default@">
<c:otherwise>
<c:const value="@default@" type="integer" desc="No mapping" />
</c:otherwise>
</lv:if>
</c:cases>
</lv:template>
<lv:template name="_map_" desc="Map criteria">
<lv:param name="@from@" desc="Value to map from" />
<lv:param name="@value@" desc="Constant to map to" />
<lv:param name="@to@" desc="Named value (use instead of @value@)" />
<lv:param name="@type@" desc="Constant value type">
<lv:text>float</lv:text>
</lv:param>
<lv:param name="@desc@" desc="Map description">
<lv:text>Destination mapping</lv:text>
</lv:param>
<!-- set by parent map-set -->
<lv:param name="@name@" desc="Param name">
<lv:param-inherit meta="map_param" />
</lv:param>
<lv:param name="@index@" desc="Index">
<lv:param-inherit meta="map_index" />
</lv:param>
<c:case>
<!-- index provided -->
<lv:if name="@index@">
<c:when name="@name@" index="@index@">
<c:eq>
<c:value-of name="@from@" />
</c:eq>
</c:when>
</lv:if>
<!-- no index provided -->
<lv:unless name="@index@">
<c:when name="@name@">
<c:eq>
<c:value-of name="@from@" />
</c:eq>
</c:when>
</lv:unless>
<lv:if name="@value@">
<c:const value="@value@" type="@type@" desc="@desc@" />
</lv:if>
<lv:unless name="@value@">
<!-- TODO: index support -->
<c:value-of name="@to@" />
</lv:unless>
</c:case>
</lv:template>
<lv:template name="_map-else_" desc="Non-matching map criteria">
<lv:param name="@value@" desc="Constant to map to" />
<lv:param name="@to@" desc="Named value (use instead of @value@)" />
<c:otherwise>
<lv:if name="@value@">
<c:const value="@value@" type="float" desc="@desc@" />
</lv:if>
<lv:unless name="@value@">
<!-- TODO: index support -->
<c:value-of name="@to@" />
</lv:unless>
</c:otherwise>
</lv:template>
</lv:package>