f:arity extracted into its own stylesheet
It depends on partial application logic, but does not belong in partial.xslmaster
parent
a02865d8b1
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04373b5edd
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@ -30,6 +30,8 @@
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xmlns:xs="http://www.w3.org/2001/XMLSchema"
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xmlns:f="http://www.lovullo.com/hoxsl/apply">
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<import href="apply/arity.xsl" />
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<function name="f:apply">
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<param name="fnref" as="element(f:ref)" />
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@ -193,20 +195,4 @@
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</message>
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</template>
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<!--
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Attempt to retrieve arity of delayed function
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The input must be a function reference. If the arity cannot be
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determined, -1 is returned.
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-->
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<function name="f:arity" as="xs:decimal">
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<param name="fnref" as="element(f:ref)" />
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<sequence select="if ( $fnref/@arity ) then
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$fnref/@arity
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else
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-1" />
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</function>
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</stylesheet>
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@ -0,0 +1,48 @@
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<?xml version="1.0" encoding="utf-8"?>
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<!--
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Arity calculations on dynamic and partially applied functions
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Copyright (C) 2014 LoVullo Associates, Inc.
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This file is part of hoxsl.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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-->
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<stylesheet version="2.0"
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xmlns="http://www.w3.org/1999/XSL/Transform"
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xmlns:xs="http://www.w3.org/2001/XMLSchema"
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xmlns:f="http://www.lovullo.com/hoxsl/apply">
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<!--
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Attempt to retrieve arity of dynamic function
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The input must be a function reference. Partially applied function
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references will have an arity equivalent to the remaining parameters
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in the original function.
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If the arity cannot be determined, -1 is returned.
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-->
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<function name="f:arity" as="xs:decimal">
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<param name="fnref" as="element(f:ref)" />
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<sequence select="if ( $fnref/@arity ) then
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$fnref/@arity
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else
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-1" />
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</function>
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</stylesheet>
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@ -192,43 +192,4 @@
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</scenario>
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</scenario>
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</scenario>
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<scenario label="f:arity">
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<scenario label="given a proper function reference">
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<variable name="test-arity"
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select="5" />
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<!-- test our format directly; do not rely on the
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apply-gen code -->
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<variable name="fnref">
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<f:ref arity="{$test-arity}">
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<foo:bar />
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</f:ref>
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</variable>
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<call function="f:arity">
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<param name="fnref"
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select="$fnref" />
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</call>
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<expect label="provides function arity"
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test="$x:result = $test-arity" />
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</scenario>
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<scenario label="given a function reference with no defined arity">
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<variable name="fnref">
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<f:ref><foo:bar /></f:ref>
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</variable>
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<call function="f:arity">
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<param name="fnref"
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select="$fnref" />
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</call>
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<expect label="returns -1"
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test="$x:result = -1" />
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</scenario>
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</scenario>
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</description>
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@ -0,0 +1,68 @@
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<?xml version="1.0" encoding="utf-8"?>
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<!--
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Tests arity calculations
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Copyright (C) 2014 LoVullo Associates, Inc.
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This file is part of hoxsl.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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-->
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<description xmlns="http://www.jenitennison.com/xslt/xspec"
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xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
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xmlns:x="http://www.jenitennison.com/xslt/xspec"
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xmlns:f="http://www.lovullo.com/hoxsl/apply"
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xmlns:foo="http://www.lovullo.com/_junk"
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stylesheet="../../src/apply/arity.xsl">
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<scenario label="f:arity">
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<scenario label="given a proper function reference">
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<variable name="test-arity"
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select="5" />
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<!-- test our format directly; do not rely on the
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apply-gen code -->
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<variable name="fnref">
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<f:ref arity="{$test-arity}">
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<foo:bar />
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</f:ref>
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</variable>
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<call function="f:arity">
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<param name="fnref"
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select="$fnref" />
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</call>
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<expect label="provides function arity"
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test="$x:result = $test-arity" />
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</scenario>
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<scenario label="given a function reference with no defined arity">
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<variable name="fnref">
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<f:ref><foo:bar /></f:ref>
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</variable>
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<call function="f:arity">
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<param name="fnref"
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select="$fnref" />
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</call>
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<expect label="returns -1"
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test="$x:result = -1" />
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</scenario>
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</scenario>
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</description>
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