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<?xml version="1.0" ?>
<?xml-stylesheet href="api.css" type="text/css" ?>
<!DOCTYPE api SYSTEM "api.dtd" [
]>
<api>
<title>Treeql Shims - Internal</title>
<header>
</header>
<group>
<name>Shims</name>
<function>
<name>do_attr</name>
<args><arg>node</arg> <arg>op</arg> <arg>attr</arg></args>
<result>returns the result of functionally applying <arg>op</arg> to the node's attribute</result>
<detail>shim to perform operation {*}<arg>op</arg> on attribute <arg>attr</arg> of <arg>node</arg></detail>
</function>
<function>
<name>do_getvals</name>
<args><arg>node</arg> <arg>pattern</arg></args>
<result>returns a list of string values of matching attributes</result>
<detail>shim to return string values of attributes matching <arg>pattern</arg> of a given <arg>node</arg></detail>
</function>
<function>
<name>do_ancestors</name>
<args><arg>node</arg></args>
<result></result>
<detail>shim to find node ancestors by repetitive [parent]</detail>
</function>
<function>
<name>do_previous*</name>
<args><arg>node</arg></args>
<result></result>
</function>
<function>
<name>do_next*</name>
<args><arg>node</arg></args>
<result></result>
</function>
</group>
<group>
<name>SubQueries</name>
<function>
<name>subquery</name>
<args></args>
<result>return result of new query $query, preserving current node set</result>
</function>
<function>
<name>and</name>
<args><arg>and</arg></args>
<result>construct the set of nodes present in both $nodes and node set $and</result>
</function>
<function>
<name>or</name>
<args><arg>or</arg></args>
<result>construct the set of nodes present in $nodes or node set $or</result>
</function>
<function>
<name>not</name>
<args><arg>not</arg></args>
<result>construct the set of nodes present in $nodes but not node set $not</result>
</function>
</group>
</api>
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