More comprehensive fnref abstraction
This will allow the implementation to evolve transparently. And it will be evolving.master
commit
faadaa3edd
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@ -162,78 +162,4 @@
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</message>
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</template>
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<!--
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Create a reference to dynamic function @var{name} with arity
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@var{arity}
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This function @emph{does not} verify that the function @var{name}
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exists, nor does it verify that the provided @var{arity} is valid
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for it. Further, the returned function reference will work
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@emph{only with dynamic functions}—that is, an application template
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is needed. See @file{transform/apply-gen.xsl} for more information
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and examples.
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-->
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<function name="f:make-ref" as="element( f:ref )">
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<param name="name" as="xs:QName" />
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<param name="arity" as="xs:integer" />
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<variable name="ns"
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select="namespace-uri-from-QName( $name )" />
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<f:ref arity="{$arity}">
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<element name="{$name}"
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namespace="{$ns}" />
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</f:ref>
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</function>
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<!--
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Determines whether @var{fnref} represents a valid dynamic function
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reference
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This can be used to determine if @var{fnref} is valid as input to
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other functions, some of which may produce an error if called with
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an invalid dynamic function reference.
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@i{Implementation details:} To be valid, @var{fnref} must:
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@enumerate
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@item Be an element of type @code{f:ref};
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@item Have a numeric @code{@arity}; and
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@item Have a child target function node.
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@enumerate
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-->
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<function name="f:is-ref" as="xs:boolean">
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<param name="fnref" as="item()*" />
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<variable name="ref" select="$fnref[ 1 ]" />
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<!-- for @arity check: note that NaN != NaN -->
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<sequence select="$ref instance of element( f:ref )
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and number( $ref/@arity ) = number( $ref/@arity )
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and exists( $ref/*[ 1 ] )" />
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</function>
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<!--
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Retrieve the QName of the target dynamic function
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Usually, this would match precisely the QName of the target
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function.
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@i{Implementation details:} This actually represents the QName of
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the @emph{application template}, which could differ from the target
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function name. One reason this may be the case is to provide a
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function alias.
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-->
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<function name="f:QName" as="xs:QName?">
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<param name="fnref" as="element( f:ref )" />
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<variable name="target" as="element()?"
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select="$fnref/element()[ 1 ]" />
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<sequence select="node-name( $target )" />
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</function>
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</stylesheet>
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@ -29,7 +29,7 @@
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xmlns:f="http://www.lovullo.com/hoxsl/apply"
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xmlns:_f="http://www.lovullo.com/hoxsl/apply/_priv">
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<import href="arity.xsl" />
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<import href="ref.xsl" />
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<!--
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@ -55,53 +55,32 @@
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<param name="fnref" as="item()+" />
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<param name="args" as="item()*" />
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<!-- perform type check here, not above, since we can be passed a
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sequence (e.g.a partially applied function) -->
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<variable name="ref"
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as="element(f:ref)"
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select="$fnref[ 1 ]" />
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<!-- note that, if FNREF is partially applied, then this arity
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represents the arity of the partially applied function, _not_
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the target function -->
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<variable name="arity" as="xs:integer"
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select="f:arity( $fnref )" />
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<variable name="argout" as="item()*">
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<!-- include any previously applied arguments (if we're partially
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applying a partial application) -->
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<sequence select="remove( $fnref, 1 )" />
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<!-- nested sequences are implicitly flattened, so we're not
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returning a sub-sequence here -->
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<sequence select="$args" />
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</variable>
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<variable name="argn" as="xs:decimal"
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select="count( $argout )" />
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<variable name="arity" as="xs:decimal"
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select="f:arity( $ref )" />
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<variable name="argn" as="xs:integer"
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select="count( $args )" />
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<choose>
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<when test="$argn eq $arity">
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<sequence select="_f:apply-partial( $ref, $argout )" />
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</when>
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<when test="$argn gt $arity">
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<apply-templates mode="f:partial-arity-error-hook"
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select="$ref">
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<with-param name="args" select="$argout" />
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<with-param name="arity" select="$arity" />
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<with-param name="argn" select="$argn" />
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select="$fnref">
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<with-param name="fnref" select="$fnref" />
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<with-param name="args" select="$args" />
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</apply-templates>
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</when>
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<otherwise>
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<f:ref>
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<sequence select="$ref/@*" />
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<variable name="new-ref"
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select="f:push-args( $fnref, $args )" />
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<attribute name="partial"
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select="count( $args )" />
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<sequence select="$ref/*" />
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</f:ref>
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<sequence select="$argout" />
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<sequence select="if ( $argn eq $arity ) then
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_f:apply-partial( $new-ref )
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else
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$new-ref" />
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</otherwise>
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</choose>
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</function>
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@ -125,8 +104,7 @@
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<!-- we never want to fail, so we perform our type check here rather
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than using param/@as -->
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<sequence select="$fn instance of element(f:ref)
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and exists( $fn/@partial )
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and number( $fn/@partial ) gt 0" />
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and exists( $fnref[ 2 ] )" />
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</function>
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@ -146,24 +124,18 @@
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match="f:ref"
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priority="1">
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<param name="args" as="item()*" />
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<param name="arity" as="xs:decimal" />
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<variable name="ref" as="element(f:ref)"
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select="." />
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<variable name="arity" as="xs:integer"
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select="f:arity(.)" />
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<variable name="argn" as="xs:decimal"
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select="count( $args )" />
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<variable name="fn"
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select="$ref/*[1]" />
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<variable name="fname"
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select="concat( '{', namespace-uri( $fn ), '}',
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$fn/local-name() )" />
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<sequence
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select="error(
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QName( namespace-uri-for-prefix( 'f', $ref ),
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QName( namespace-uri-for-prefix( 'f', . ),
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'err:PARTIAL_PARAM_OVERFLOW' ),
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concat( 'Attempted partial application of ',
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$fname, '#', $arity, ' with ',
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'function of arity ', $arity, ' with ',
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$argn, ' arguments' ) )" />
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</template>
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@ -180,14 +152,16 @@
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are supported}. This should be enough.
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-->
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<function name="_f:apply-partial">
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<param name="fnref" as="element(f:ref)" />
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<param name="args" as="item()*" />
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<param name="fnref" as="item()+" />
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<variable name="fn" as="element()"
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<variable name="args"
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select="f:args( $fnref )" />
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<variable name="desc" as="element( f:ref )"
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select="$fnref[ 1 ]" />
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<!-- just as `f:apply', we support up to 8 arguments -->
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<apply-templates select="$fn" mode="f:apply">
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<apply-templates select="$desc" mode="f:apply">
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<with-param name="arg1" select="$args[ 1 ]" />
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<with-param name="arg2" select="$args[ 2 ]" />
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<with-param name="arg3" select="$args[ 3 ]" />
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@ -0,0 +1,237 @@
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<?xml version="1.0" encoding="utf-8"?>
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<!--
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Dynamic function reference
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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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A dynamic function reference is a sequence describing a dynamic
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function to be applied. It consists of two major parts—the dynamic
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function reference descriptor and the arguments to bind to its
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parameters:
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@example
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(desc[, arg1[, ...argn]])
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@end example
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The descriptor @var{desc} has the following format:
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@example
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<f:ref arity="N" [...]>
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<target />
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</f:ref>
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@end example
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where the @var{target} node shares the same QName as the function to
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be applied, and @var{@arity} is its arity. The @var{f:ref} node may
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be decorated with additional attributes depending on its context or
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constructor.
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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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Create a reference to dynamic function @var{name} with arity
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@var{arity}
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This function @emph{does not} verify that the function @var{name}
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exists, nor does it verify that the provided @var{arity} is valid
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for it. Further, the returned function reference will work
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@emph{only with dynamic functions}—that is, an application template
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is needed. See @file{transform/apply-gen.xsl} for more information
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and examples.
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-->
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<function name="f:make-ref" as="element( f:ref )">
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<param name="name" as="xs:QName" />
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<param name="arity" as="xs:integer" />
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<variable name="ns"
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select="namespace-uri-from-QName( $name )" />
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<f:ref arity="{$arity}">
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<element name="{$name}"
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namespace="{$ns}" />
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</f:ref>
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</function>
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<!--
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Determines whether @var{fnref} represents a valid dynamic function
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reference
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This can be used to determine if @var{fnref} is valid as input to
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other functions, some of which may produce an error if called with
|
||||
an invalid dynamic function reference.
|
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|
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@i{Implementation details:} To be valid, @var{fnref} must:
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@enumerate
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@item Be an element of type @code{f:ref};
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@item Have a numeric @code{@arity}; and
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@item Have a child target function node.
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@enumerate
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-->
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<function name="f:is-ref" as="xs:boolean">
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<param name="fnref" as="item()*" />
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<variable name="ref" select="$fnref[ 1 ]" />
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<!-- for @arity check: note that NaN != NaN -->
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<sequence select="$ref instance of element( f:ref )
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and number( $ref/@arity ) = number( $ref/@arity )
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and exists( $ref/*[ 1 ] )" />
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</function>
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<!--
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Retrieve the QName of the target dynamic function
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Usually, this will match precisely the QName of the target
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function.
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@var{fnreF} must be a valid dynamic function reference.
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@i{Implementation details:} This actually represents the QName of
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the @emph{application template}, which could differ from the target
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function name. One reason this may be the case is to provide a
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function alias.
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-->
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<function name="f:QName" as="xs:QName?">
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<param name="fnref" as="item()+" />
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<variable name="desc" as="element( f:ref )"
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select="$fnref[ 1 ]" />
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<variable name="target" as="element()?"
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select="$desc/element()[ 1 ]" />
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<sequence select="node-name( $target )" />
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</function>
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<!--
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Attempt to retrieve arity of dynamic function @var{fnref}
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@var{fnref} must be a dynamic function reference satisfying
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@code{f:is-ref}. Partially applied function references will have an
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arity equivalent to the free parameters in the target function.
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-->
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<function name="f:arity" as="xs:integer">
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<param name="fnref" as="item()+" />
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<variable name="ref" as="element( f:ref )"
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select="$fnref[ 1 ]" />
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<!-- this implicitly asserts on the type; it should never fail if
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the system is being used properly -->
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<variable name="arity" as="xs:integer"
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select="$ref/@arity" />
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<sequence select="$arity" />
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</function>
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<!--
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Retrieve a sequence of the partially applied arguments of
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@var{fnref}
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The resulting sequence may be empty. @var{fnref} is assumed to be a
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valid dynamic function reference; you should verify that assumption
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beforehand.
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-->
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<function name="f:args" as="item()*">
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<param name="fnref" as="item()+" />
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<sequence select="remove( $fnref, 1 )" />
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</function>
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<!--
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Set partially applied arguments of @var{fnref} to @var{args},
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replacing any existing arguments
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The arity of @var{fnref} will be adjusted relative to the number of
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items in @var{args} such that the resulting dynamic function
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reference has the illusion of being its own, new function:
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increasing the argument count of @var{fnref} will @emph{decrease}
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the arity of the resulting reference and vice versa.
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@emph{No validations are performed on arity}—if there exist more
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arguments than the number of target function parameters, no error
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will be raised.
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@var{fnref} must be a valid dynamic function reference.
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-->
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<function name="f:set-args" as="item()+">
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<param name="fnref" as="item()+" />
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<param name="args" as="item()*" />
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<variable name="desc" as="element( f:ref )"
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select="$fnref[ 1 ]" />
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<!-- this reference may be partially applied; see below arity
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adjustment -->
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<variable name="target-arity" as="xs:double"
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select="$desc/@arity + count( f:args( $fnref ) )" />
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<f:ref>
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<sequence select="$desc/@*" />
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<!-- treat partial applications as their own functions (with their
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own arities) -->
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<attribute name="arity"
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select="$target-arity - count( $args )" />
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<sequence select="$desc/*" />
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</f:ref>
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<sequence select="$args" />
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</function>
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<!--
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Pushes @var{args} onto the argument list of @var{fnref}
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This operates just as @code{f:set-args}, but retains existing arguments.
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-->
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<function name="f:push-args" as="item()+">
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<param name="fnref" as="item()+" />
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<param name="args" as="item()*" />
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<sequence select="f:set-args($fnref,
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(f:args( $fnref ), $args) )" />
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</function>
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<!--
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Unshifts @var{args} onto the argument list of @var{fnref}
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This operates just as @code{f:set-args}, but retains existing arguments.
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-->
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<function name="f:unshift-args" as="item()+">
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<param name="fnref" as="item()+" />
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<param name="args" as="item()*" />
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<sequence select="f:set-args($fnref,
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($args, f:args( $fnref )) )" />
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||||
</function>
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</stylesheet>
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|
|
@ -36,6 +36,8 @@
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|||
xmlns:out="http://www.lovullo.com/hoxsl/apply/gen/_out"
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exclude-result-prefixes="#default fgen">
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<import href="../apply/ref.xsl" />
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<output indent="yes"
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encoding="utf-8" />
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|
|
@ -119,11 +121,10 @@
|
|||
dependencies and simply specify the full namespace URI -->
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<variable name="name-resolv"
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select="resolve-QName( @name, . )" />
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<variable name="ns-prefix"
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select="substring-before( @name, ':' )" />
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<variable name="ns"
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select="namespace-uri-for-prefix(
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$ns-prefix, . )" />
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select="namespace-uri-from-QName( $name-resolv )" />
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<variable name="ns-prefix"
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select="prefix-from-QName( $name-resolv )" />
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|
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<sequence select="fgen:create-func(
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., $name-resolv, $ns-prefix, $ns )" />
|
||||
|
|
@ -164,15 +165,10 @@
|
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<namespace name="{$ns-prefix}"
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||||
select="$ns" />
|
||||
|
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<f:ref>
|
||||
<attribute name="arity"
|
||||
select="count( $fnref/xsl:param )" />
|
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<variable name="arity"
|
||||
select="count( $fnref/xsl:param )" />
|
||||
|
||||
<!-- represents the function being referenced -->
|
||||
<element name="{$local-name}"
|
||||
namespace="{$ns}">
|
||||
</element>
|
||||
</f:ref>
|
||||
<sequence select="f:make-ref( $name-resolv, $arity )" />
|
||||
</out:function>
|
||||
</function>
|
||||
|
||||
|
|
|
|||
158
test/apply.xspec
158
test/apply.xspec
|
|
@ -418,162 +418,4 @@
|
|||
</scenario>
|
||||
</scenario>
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="f:make-ref constructor">
|
||||
<scenario label="when called with a function QName and arity">
|
||||
<variable name="qname"
|
||||
select="QName( $foo-uri, 'reftest' )" />
|
||||
<variable name="arity"
|
||||
select="2" />
|
||||
|
||||
<call function="f:make-ref">
|
||||
<param name="name" select="$qname" />
|
||||
<param name="arity" select="$arity" />
|
||||
</call>
|
||||
|
||||
<expect label="produces a dynamic function reference"
|
||||
test="f:is-ref( $x:result )" />
|
||||
|
||||
<expect label="produces provided reference arity"
|
||||
test="f:arity( $x:result ) = $arity" />
|
||||
|
||||
<expect label="produces reference to expected QName"
|
||||
test="f:QName( $x:result ) = $qname" />
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="produces a valid dynamic function reference">
|
||||
<call function="f:apply">
|
||||
<param name="fnref"
|
||||
select="f:make-ref( QName( $foo-uri, 'fn1' ),
|
||||
1 )" />
|
||||
<param name="arg1"
|
||||
select="$args/foo:arg1" />
|
||||
</call>
|
||||
|
||||
<expect label="that can be applied using f:apply"
|
||||
test="$x:result[ 1 ] = foo:applied[ @n = 1 ]
|
||||
and $x:result[ 2 ] is $args/foo:arg1" />
|
||||
</scenario>
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="f:is-ref predicate">
|
||||
<scenario label="given a valid dynamic function reference">
|
||||
<call function="f:is-ref">
|
||||
<param name="fnref"
|
||||
select="f:make-ref( QName( $foo-uri, 'foo' ), 0 )" />
|
||||
</call>
|
||||
|
||||
<expect label="returns true()"
|
||||
select="true()" />
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="given an invalid dynamic function reference">
|
||||
<call function="f:is-ref">
|
||||
<param name="fnref">
|
||||
<foo:bar />
|
||||
</param>
|
||||
</call>
|
||||
|
||||
<expect label="returns false()"
|
||||
select="false()" />
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="given a dynamic function reference without arity">
|
||||
<call function="f:is-ref">
|
||||
<param name="fnref">
|
||||
<f:ref>
|
||||
<foo:bar />
|
||||
</f:ref>
|
||||
</param>
|
||||
</call>
|
||||
|
||||
<expect label="returns false()"
|
||||
select="false()" />
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="given a dynamic function reference without
|
||||
integral arity">
|
||||
<call function="f:is-ref">
|
||||
<param name="fnref">
|
||||
<f:ref arity="moo">
|
||||
<foo:bar />
|
||||
</f:ref>
|
||||
</param>
|
||||
</call>
|
||||
|
||||
<expect label="returns false()"
|
||||
select="false()" />
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="given a dynamic function reference without target
|
||||
node">
|
||||
<call function="f:is-ref">
|
||||
<param name="fnref">
|
||||
<f:ref arity="0" />
|
||||
</param>
|
||||
</call>
|
||||
|
||||
<expect label="returns false()"
|
||||
select="false()" />
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="given an empty sequence">
|
||||
<call function="f:is-ref">
|
||||
<param name="fnref" select="()" />
|
||||
</call>
|
||||
|
||||
<expect label="returns false()"
|
||||
select="false()" />
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="given a non-element">
|
||||
<call function="f:is-ref">
|
||||
<param name="fnref" select="5" />
|
||||
</call>
|
||||
|
||||
<expect label="returns false()"
|
||||
select="false()" />
|
||||
</scenario>
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="f:QName accessor">
|
||||
<scenario label="given a valid dynamic function reference">
|
||||
<variable name="foo-qname"
|
||||
select="QName( $foo-uri, 'foo' )" />
|
||||
|
||||
<call function="f:QName">
|
||||
<param name="fnref"
|
||||
select="f:make-ref( $foo-qname, 0 )" />
|
||||
</call>
|
||||
|
||||
<expect label="returns QName"
|
||||
test="$x:result instance of xs:QName" />
|
||||
|
||||
<expect label="returns QName of target dynamic function"
|
||||
select="$foo-qname" />
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="given a dynamic function reference with no target
|
||||
node">
|
||||
<call function="f:QName">
|
||||
<param name="fnref">
|
||||
<f:ref arity="5" />
|
||||
</param>
|
||||
</call>
|
||||
|
||||
<expect label="returns empty sequence"
|
||||
select="()" />
|
||||
</scenario>
|
||||
</scenario>
|
||||
</description>
|
||||
|
|
|
|||
|
|
@ -1,68 +0,0 @@
|
|||
<?xml version="1.0" encoding="utf-8"?>
|
||||
<!--
|
||||
Tests arity calculations
|
||||
|
||||
Copyright (C) 2014 LoVullo Associates, Inc.
|
||||
|
||||
This file is part of hoxsl.
|
||||
|
||||
This program is free software: you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation, either version 3 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
-->
|
||||
|
||||
<description xmlns="http://www.jenitennison.com/xslt/xspec"
|
||||
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
|
||||
xmlns:x="http://www.jenitennison.com/xslt/xspec"
|
||||
xmlns:f="http://www.lovullo.com/hoxsl/apply"
|
||||
xmlns:foo="http://www.lovullo.com/_junk"
|
||||
stylesheet="../../src/apply/arity.xsl">
|
||||
|
||||
|
||||
<scenario label="f:arity">
|
||||
<scenario label="given a proper function reference">
|
||||
<variable name="test-arity"
|
||||
select="5" />
|
||||
|
||||
<!-- test our format directly; do not rely on the
|
||||
apply-gen code -->
|
||||
<variable name="fnref">
|
||||
<f:ref arity="{$test-arity}">
|
||||
<foo:bar />
|
||||
</f:ref>
|
||||
</variable>
|
||||
|
||||
<call function="f:arity">
|
||||
<param name="fnref"
|
||||
select="$fnref" />
|
||||
</call>
|
||||
|
||||
<expect label="provides function arity"
|
||||
test="$x:result = $test-arity" />
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="given a function reference with no defined arity">
|
||||
<variable name="fnref">
|
||||
<f:ref><foo:bar /></f:ref>
|
||||
</variable>
|
||||
|
||||
<call function="f:arity">
|
||||
<param name="fnref"
|
||||
select="$fnref" />
|
||||
</call>
|
||||
|
||||
<expect label="returns -1"
|
||||
test="$x:result = -1" />
|
||||
</scenario>
|
||||
</scenario>
|
||||
</description>
|
||||
|
|
@ -41,8 +41,10 @@
|
|||
<template mode="f:partial-arity-error-hook"
|
||||
match="f:ref"
|
||||
priority="5">
|
||||
<param name="args" as="item()*" />
|
||||
<param name="arity" as="xs:decimal" />
|
||||
<param name="args" as="item()*" />
|
||||
|
||||
<variable name="arity"
|
||||
select="f:arity(.)" />
|
||||
|
||||
<foo:partial-error arity="{$arity}" />
|
||||
|
||||
|
|
|
|||
|
|
@ -51,11 +51,8 @@
|
|||
<param name="args" select="()" />
|
||||
</call>
|
||||
|
||||
<expect label="returns FNREF"
|
||||
test="$x:result[ 1 ] = $fnref" />
|
||||
|
||||
<expect label="indicates that 0 arguments were partially applied"
|
||||
test="$x:result/@partial = 0" />
|
||||
<expect label="returns reference to original target"
|
||||
test="f:QName( $x:result) = f:QName( $fnref )" />
|
||||
|
||||
<expect label="returns nothing else"
|
||||
test="count( $x:result ) = 1" />
|
||||
|
|
@ -68,15 +65,14 @@
|
|||
<param name="args" select="$args/foo:a, $args/foo:b" />
|
||||
</call>
|
||||
|
||||
<expect label="returns FNREF as first item in sequence"
|
||||
test="$x:result[ 1 ] = $fnref" />
|
||||
|
||||
<expect label="indicates that N arguments were partially applied"
|
||||
test="$x:result/@partial = 2" />
|
||||
<expect label="returns target reference as first item in
|
||||
sequence"
|
||||
test="f:QName( $fnref ) = f:QName( $x:result )" />
|
||||
|
||||
<variable name="rargs" select="f:args( $x:result )" />
|
||||
<expect label="returns each argument, ordered"
|
||||
test="$x:result[ 2 ] is $args/foo:a
|
||||
and $x:result[ 3 ] is $args/foo:b" />
|
||||
test="$rargs[ 1 ] is $args/foo:a
|
||||
and $rargs[ 2 ] is $args/foo:b" />
|
||||
</scenario>
|
||||
|
||||
|
||||
|
|
@ -93,10 +89,11 @@
|
|||
test="$x:result[ 1 ]
|
||||
and $x:result[ 1 ] = foo:ternary-applied" />
|
||||
|
||||
<variable name="rargs" select="f:args( $x:result )" />
|
||||
<expect label="applies target function with arguments, by reference"
|
||||
test="$x:result[ 2 ] is $args/foo:a
|
||||
and $x:result[ 3 ] is $args/foo:b
|
||||
and $x:result[ 4 ] is $args/foo:c" />
|
||||
test="$rargs[ 1 ] is $args/foo:a
|
||||
and $rargs[ 2 ] is $args/foo:b
|
||||
and $rargs[ 3 ] is $args/foo:c" />
|
||||
</scenario>
|
||||
|
||||
|
||||
|
|
@ -108,16 +105,17 @@
|
|||
<param name="args" select="$args/foo:b" />
|
||||
</call>
|
||||
|
||||
<expect label="returns FNREF as first item in sequence"
|
||||
test="$x:result[ 1 ] = $fnref" />
|
||||
<expect label="retains target reference"
|
||||
test="f:QName( $fnref ) = f:QName( $x:result )" />
|
||||
|
||||
<expect label="returns arguments from both partial applications"
|
||||
test="count( $x:result ) = 3" />
|
||||
test="count( f:args( $x:result ) ) = 2" />
|
||||
|
||||
<variable name="rargs" select="f:args( $x:result )" />
|
||||
<expect label="arguments are ordered with previous applications
|
||||
first in sequence"
|
||||
test="$x:result[ 2 ] is $args/foo:a
|
||||
and $x:result[ 3 ] is $args/foo:b" />
|
||||
test="$rargs[ 1 ] is $args/foo:a
|
||||
and $rargs[ 2 ] is $args/foo:b" />
|
||||
</scenario>
|
||||
|
||||
|
||||
|
|
@ -192,9 +190,9 @@
|
|||
test="$x:result[ 1 ] = foo:applied[ @n = 3 ]" />
|
||||
|
||||
<expect label="applies target function with arguments, by reference"
|
||||
test="$x:result[ 2 ] is $args/foo:a
|
||||
and $x:result[ 3 ] is $args/foo:b
|
||||
and $x:result[ 4 ] is $args/foo:c" />
|
||||
test="$x:result[ 2 ] = $args/foo:a
|
||||
and $x:result[ 3 ] = $args/foo:b
|
||||
and $x:result[ 4 ] = $args/foo:c" />
|
||||
</scenario>
|
||||
|
||||
|
||||
|
|
@ -406,7 +404,9 @@
|
|||
|
||||
|
||||
<!-- caller may extract the function ref from the sequence and
|
||||
assert on that -->
|
||||
assert on that; we are going to explicitly choose to *not*
|
||||
support that behavior, since an fnref acquires meaning as an
|
||||
opaque unit -->
|
||||
<scenario label="given a valid fref, partially applied with N>0
|
||||
arguments, without argument sequence">
|
||||
<call function="f:is-partial">
|
||||
|
|
@ -414,8 +414,8 @@
|
|||
select="f:partial( foo:ternary(), (1, 2) )[ 1 ]" />
|
||||
</call>
|
||||
|
||||
<expect label="returns true()"
|
||||
test="$x:result = true()" />
|
||||
<expect label="returns false()"
|
||||
select="false()" />
|
||||
</scenario>
|
||||
</scenario>
|
||||
|
||||
|
|
@ -439,8 +439,7 @@
|
|||
<expect label="provides source dynamic function reference"
|
||||
test="$x:result[ 2 ] is $fnref" />
|
||||
|
||||
<expect label="provides arity of target (root of all partial
|
||||
applications) function"
|
||||
<expect label="provides arity of ref"
|
||||
test="$x:result[ 1 ]/@arity = 3" />
|
||||
|
||||
<expect label="provides each argument of partial application
|
||||
|
|
@ -462,10 +461,11 @@
|
|||
$args/foo:d" />
|
||||
</call>
|
||||
|
||||
<expect label="produces error with all arguments"
|
||||
<expect label="produces error with arguments of final
|
||||
application"
|
||||
test="exists( foo:partial-error )
|
||||
and $x:result[ 3 ] is $args/foo:a
|
||||
and $x:result[ 6 ] is $args/foo:d" />
|
||||
and $x:result[ 3 ] is $args/foo:c
|
||||
and $x:result[ 4 ] is $args/foo:d" />
|
||||
</scenario>
|
||||
</scenario>
|
||||
</description>
|
||||
|
|
|
|||
|
|
@ -1,6 +1,6 @@
|
|||
<?xml version="1.0" encoding="utf-8"?>
|
||||
<!--
|
||||
Arity calculations on dynamic and partially applied functions
|
||||
Tests dynamic function reference
|
||||
|
||||
Copyright (C) 2014 LoVullo Associates, Inc.
|
||||
|
||||
|
|
@ -21,28 +21,15 @@
|
|||
-->
|
||||
|
||||
<stylesheet version="2.0"
|
||||
xmlns="http://www.w3.org/1999/XSL/Transform"
|
||||
xmlns:xs="http://www.w3.org/2001/XMLSchema"
|
||||
xmlns:f="http://www.lovullo.com/hoxsl/apply">
|
||||
xmlns="http://www.w3.org/1999/XSL/Transform"
|
||||
xmlns:xs="http://www.w3.org/2001/XMLSchema"
|
||||
xmlns:f="http://www.lovullo.com/hoxsl/apply"
|
||||
xmlns:foo="http://www.lovullo.com/_junk">
|
||||
|
||||
<!-- this imports the SUT, as well as additional functions we need
|
||||
for testing -->
|
||||
<import href="../../src/apply.xsl" />
|
||||
|
||||
|
||||
<!--
|
||||
Attempt to retrieve arity of dynamic function
|
||||
|
||||
The input must be a function reference. Partially applied function
|
||||
references will have an arity equivalent to the remaining parameters
|
||||
in the original function.
|
||||
|
||||
If the arity cannot be determined, -1 is returned.
|
||||
-->
|
||||
<function name="f:arity" as="xs:decimal">
|
||||
<param name="fnref" as="element(f:ref)" />
|
||||
|
||||
<sequence select="if ( $fnref/@arity ) then
|
||||
$fnref/@arity
|
||||
else
|
||||
-1" />
|
||||
</function>
|
||||
|
||||
<!-- numerous templates for arity tests -->
|
||||
<import href="../apply-test.xsl" />
|
||||
</stylesheet>
|
||||
|
|
@ -0,0 +1,550 @@
|
|||
<?xml version="1.0" encoding="utf-8"?>
|
||||
<!--
|
||||
Tests dynamic function reference
|
||||
|
||||
Copyright (C) 2014 LoVullo Associates, Inc.
|
||||
|
||||
This file is part of hoxsl.
|
||||
|
||||
This program is free software: you can redistribute it and/or modify
|
||||
it under the terms of the GNU General Public License as published by
|
||||
the Free Software Foundation, either version 3 of the License, or
|
||||
(at your option) any later version.
|
||||
|
||||
This program is distributed in the hope that it will be useful,
|
||||
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
GNU General Public License for more details.
|
||||
|
||||
You should have received a copy of the GNU General Public License
|
||||
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
||||
-->
|
||||
|
||||
<description xmlns="http://www.jenitennison.com/xslt/xspec"
|
||||
xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
|
||||
xmlns:x="http://www.jenitennison.com/xslt/xspec"
|
||||
xmlns:f="http://www.lovullo.com/hoxsl/apply"
|
||||
xmlns:foo="http://www.lovullo.com/_junk"
|
||||
stylesheet="ref-test.xsl">
|
||||
|
||||
<variable name="foo-uri"
|
||||
select="namespace-uri-for-prefix(
|
||||
'foo', root(.)/element() )" />
|
||||
|
||||
<variable name="test-arity"
|
||||
select="5" />
|
||||
|
||||
<variable name="test-fn"
|
||||
select="f:make-ref( QName( $foo-uri, 'foo:bar' ),
|
||||
$test-arity )" />
|
||||
|
||||
<variable name="args">
|
||||
<foo:args>
|
||||
<foo:a />
|
||||
<foo:b />
|
||||
<foo:c />
|
||||
<foo:d />
|
||||
</foo:args>
|
||||
</variable>
|
||||
|
||||
|
||||
<scenario label="f:make-ref constructor">
|
||||
<scenario label="when called with a function QName and arity">
|
||||
<variable name="qname"
|
||||
select="QName( $foo-uri, 'reftest' )" />
|
||||
<variable name="arity"
|
||||
select="2" />
|
||||
|
||||
<call function="f:make-ref">
|
||||
<param name="name" select="$qname" />
|
||||
<param name="arity" select="$arity" />
|
||||
</call>
|
||||
|
||||
<expect label="produces a dynamic function reference"
|
||||
test="f:is-ref( $x:result )" />
|
||||
|
||||
<expect label="produces provided reference arity"
|
||||
test="f:arity( $x:result ) = $arity" />
|
||||
|
||||
<expect label="produces reference to expected QName"
|
||||
test="f:QName( $x:result ) = $qname" />
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="produces a valid dynamic function reference">
|
||||
<variable name="arg">
|
||||
<foo:bar />
|
||||
</variable>
|
||||
|
||||
<call function="f:apply">
|
||||
<param name="fnref"
|
||||
select="f:make-ref( QName( $foo-uri, 'fn1' ),
|
||||
1 )" />
|
||||
<param name="arg1" select="$arg" />
|
||||
</call>
|
||||
|
||||
<expect label="that can be applied using f:apply"
|
||||
test="$x:result[ 1 ] = foo:applied[ @n = 1 ]
|
||||
and $x:result[ 2 ] is $arg" />
|
||||
</scenario>
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="f:is-ref predicate">
|
||||
<scenario label="given a valid dynamic function reference">
|
||||
<call function="f:is-ref">
|
||||
<param name="fnref"
|
||||
select="f:make-ref( QName( $foo-uri, 'foo' ), 0 )" />
|
||||
</call>
|
||||
|
||||
<expect label="returns true()"
|
||||
select="true()" />
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="given an invalid dynamic function reference">
|
||||
<call function="f:is-ref">
|
||||
<param name="fnref">
|
||||
<foo:bar />
|
||||
</param>
|
||||
</call>
|
||||
|
||||
<expect label="returns false()"
|
||||
select="false()" />
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="given a dynamic function reference without arity">
|
||||
<call function="f:is-ref">
|
||||
<param name="fnref">
|
||||
<f:ref>
|
||||
<foo:bar />
|
||||
</f:ref>
|
||||
</param>
|
||||
</call>
|
||||
|
||||
<expect label="returns false()"
|
||||
select="false()" />
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="given a dynamic function reference without
|
||||
integral arity">
|
||||
<call function="f:is-ref">
|
||||
<param name="fnref">
|
||||
<f:ref arity="moo">
|
||||
<foo:bar />
|
||||
</f:ref>
|
||||
</param>
|
||||
</call>
|
||||
|
||||
<expect label="returns false()"
|
||||
select="false()" />
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="given a dynamic function reference without target
|
||||
node">
|
||||
<call function="f:is-ref">
|
||||
<param name="fnref">
|
||||
<f:ref arity="0" />
|
||||
</param>
|
||||
</call>
|
||||
|
||||
<expect label="returns false()"
|
||||
select="false()" />
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="given an empty sequence">
|
||||
<call function="f:is-ref">
|
||||
<param name="fnref" select="()" />
|
||||
</call>
|
||||
|
||||
<expect label="returns false()"
|
||||
select="false()" />
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="given a non-element">
|
||||
<call function="f:is-ref">
|
||||
<param name="fnref" select="5" />
|
||||
</call>
|
||||
|
||||
<expect label="returns false()"
|
||||
select="false()" />
|
||||
</scenario>
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="f:QName accessor">
|
||||
<variable name="foo-qname"
|
||||
select="QName( $foo-uri, 'foo' )" />
|
||||
|
||||
<scenario label="given a valid dynamic function reference with no
|
||||
argments">
|
||||
<call function="f:QName">
|
||||
<param name="fnref"
|
||||
select="f:make-ref( $foo-qname, 0 )" />
|
||||
</call>
|
||||
|
||||
<expect label="returns QName"
|
||||
test="$x:result instance of xs:QName" />
|
||||
|
||||
<expect label="returns QName of target dynamic function"
|
||||
select="$foo-qname" />
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="given a valid dynamic function reference with
|
||||
argments">
|
||||
<call function="f:QName">
|
||||
<param name="fnref"
|
||||
select="f:set-args( f:make-ref( $foo-qname, 0 ),
|
||||
(1, 2) )" />
|
||||
</call>
|
||||
|
||||
<expect label="returns QName"
|
||||
test="$x:result instance of xs:QName" />
|
||||
|
||||
<expect label="returns QName of target dynamic function"
|
||||
select="$foo-qname" />
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="given a dynamic function reference with no target
|
||||
node">
|
||||
<call function="f:QName">
|
||||
<param name="fnref">
|
||||
<f:ref arity="5" />
|
||||
</param>
|
||||
</call>
|
||||
|
||||
<expect label="returns empty sequence"
|
||||
select="()" />
|
||||
</scenario>
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="f:arity">
|
||||
<scenario label="given a proper function reference">
|
||||
<variable name="test-arity"
|
||||
select="5" />
|
||||
|
||||
<!-- test our format directly; do not rely on the
|
||||
apply-gen code -->
|
||||
<call function="f:arity">
|
||||
<param name="fnref" select="$test-fn" />
|
||||
</call>
|
||||
|
||||
<expect label="provides function arity"
|
||||
select="$test-arity" />
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="given a partially applied function reference">
|
||||
<call function="f:arity">
|
||||
<param name="fnref"
|
||||
select="f:apply( $test-fn, 1, 2 )" />
|
||||
</call>
|
||||
|
||||
<expect label="provides arity of the target function minus the
|
||||
number of bound parameters"
|
||||
select="$test-arity - 2" />
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="given a multiply-partially-applied function reference">
|
||||
<call function="f:arity">
|
||||
<param name="fnref"
|
||||
select="f:apply(
|
||||
f:apply( $test-fn, 1, 2 ),
|
||||
3 )" />
|
||||
</call>
|
||||
|
||||
<expect label="provides arity of the target function minus the
|
||||
number of bound parameters"
|
||||
select="$test-arity - 3" />
|
||||
</scenario>
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="f:set-args setter">
|
||||
<scenario label="setting empty args on reference with no args">
|
||||
<call function="f:set-args">
|
||||
<param name="fnref" select="$test-fn" />
|
||||
<param name="args" select="()" />
|
||||
</call>
|
||||
|
||||
<expect label="retains target QName"
|
||||
test="f:QName( $x:result ) = f:QName( $test-fn )" />
|
||||
|
||||
<expect label="retains target arity"
|
||||
test="f:arity( $x:result ) = f:arity( $test-fn )" />
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="setting args on reference with no args">
|
||||
<call function="f:set-args">
|
||||
<param name="fnref" select="$test-fn" />
|
||||
<param name="args" select="(1, 2)" />
|
||||
</call>
|
||||
|
||||
<expect label="retains target QName"
|
||||
test="f:QName( $x:result ) = f:QName( $test-fn )" />
|
||||
|
||||
<!-- the function is now partially applied -->
|
||||
<expect label="reduces arity by number of arguments"
|
||||
test="f:arity( $x:result ) = f:arity( $test-fn ) - 2" />
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="clearing args on reference with args">
|
||||
<call function="f:set-args">
|
||||
<param name="fnref"
|
||||
select="f:set-args( $test-fn, (1, 2) )" />
|
||||
<param name="args"
|
||||
select="()" />
|
||||
</call>
|
||||
|
||||
<expect label="retains target QName"
|
||||
test="f:QName( $x:result ) = f:QName( $test-fn )" />
|
||||
|
||||
<!-- the function is no longer partially applied -->
|
||||
<expect label="restores target function arity"
|
||||
test="f:arity( $x:result ) = f:arity( $test-fn )" />
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="increasing reference argument count">
|
||||
<call function="f:set-args">
|
||||
<param name="fnref"
|
||||
select="f:set-args( $test-fn, (1, 2) )" />
|
||||
<param name="args"
|
||||
select="(1, 2, 3)" />
|
||||
</call>
|
||||
|
||||
<expect label="retains target QName"
|
||||
test="f:QName( $x:result ) = f:QName( $test-fn )" />
|
||||
|
||||
<!-- the function is no longer partially applied -->
|
||||
<expect label="reduces arity by number of argments"
|
||||
test="f:arity( $x:result ) = f:arity( $test-fn ) - 3" />
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="decrasing reference argument count">
|
||||
<call function="f:set-args">
|
||||
<param name="fnref"
|
||||
select="f:set-args( $test-fn, (1, 2) )" />
|
||||
<param name="args"
|
||||
select="1" />
|
||||
</call>
|
||||
|
||||
<expect label="retains target QName"
|
||||
test="f:QName( $x:result ) = f:QName( $test-fn )" />
|
||||
|
||||
<!-- the function is no longer partially applied -->
|
||||
<expect label="increases arity by difference in argument count"
|
||||
test="f:arity( $x:result ) = f:arity( $test-fn ) - 1" />
|
||||
</scenario>
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="f:args accessor">
|
||||
<scenario label="given a new dynamic function reference">
|
||||
<call function="f:args">
|
||||
<param name="fnref" select="$test-fn" />
|
||||
</call>
|
||||
|
||||
<expect label="produces empty argument list"
|
||||
select="()" />
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="after an initial f:set-args">
|
||||
<call function="f:args">
|
||||
<param name="fnref"
|
||||
select="f:set-args( $test-fn, ($args/foo:a,
|
||||
$args/foo:b) )" />
|
||||
</call>
|
||||
|
||||
<expect label="returns sequence of arguments by reference"
|
||||
test="$x:result[ 1 ] is $args/foo:a
|
||||
and $x:result[ 2 ] is $args/foo:b" />
|
||||
|
||||
<expect label="returns no other items"
|
||||
test="count( $x:result ) = 2" />
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="after a f:set-args on an existing argument list">
|
||||
<call function="f:args">
|
||||
<param name="fnref"
|
||||
select="f:set-args(
|
||||
f:set-args( $test-fn, ($args/foo:a,
|
||||
$args/foo:b) ),
|
||||
($args/foo:b,
|
||||
$args/foo:c) )" />
|
||||
</call>
|
||||
|
||||
<expect label="returns sequence of arguments by reference,
|
||||
discarding previously set arguments"
|
||||
test="$x:result[ 1 ] is $args/foo:b
|
||||
and $x:result[ 2 ] is $args/foo:c" />
|
||||
|
||||
<expect label="returns no other items"
|
||||
test="count( $x:result ) = 2" />
|
||||
</scenario>
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="f:push-args mutator">
|
||||
<scenario label="pushing arguments onto empty reference list">
|
||||
<call function="f:push-args">
|
||||
<param name="fnref"
|
||||
select="$test-fn" />
|
||||
<param name="args"
|
||||
select="$args/foo:a,
|
||||
$args/foo:b" />
|
||||
</call>
|
||||
|
||||
<expect label="retains target QName"
|
||||
test="f:QName( $x:result ) = f:QName( $test-fn )" />
|
||||
|
||||
<expect label="reduces arity by number of arguments, relative to
|
||||
target function"
|
||||
test="f:arity( $x:result ) = f:arity( $test-fn ) - 2" />
|
||||
|
||||
<expect label="sets arguments by reference"
|
||||
test="f:args( $x:result )[ 1 ] is $args/foo:a
|
||||
and f:args( $x:result )[ 2 ] is $args/foo:b" />
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="pushing arguments onto populated reference
|
||||
list">
|
||||
<call function="f:push-args">
|
||||
<param name="fnref"
|
||||
select="f:set-args( $test-fn,
|
||||
($args/foo:a,
|
||||
$args/foo:b) )" />
|
||||
<param name="args"
|
||||
select="$args/foo:c,
|
||||
$args/foo:d" />
|
||||
</call>
|
||||
|
||||
<expect label="retains target QName"
|
||||
test="f:QName( $x:result ) = f:QName( $test-fn )" />
|
||||
|
||||
<expect label="reduces arity by number of arguments, relative to
|
||||
previous arity"
|
||||
test="f:arity( $x:result ) = f:arity( $test-fn ) - 4" />
|
||||
|
||||
<expect label="retains previous arguments by reference"
|
||||
test="f:args( $x:result )[ 1 ] is $args/foo:a
|
||||
and f:args( $x:result )[ 2 ] is $args/foo:b" />
|
||||
|
||||
<expect label="pushes new arguments by reference"
|
||||
test="f:args( $x:result )[ 3 ] is $args/foo:c
|
||||
and f:args( $x:result )[ 4 ] is $args/foo:d" />
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="pushing empty argument list onto populated
|
||||
reference list">
|
||||
<call function="f:push-args">
|
||||
<param name="fnref"
|
||||
select="f:set-args( $test-fn,
|
||||
($args/foo:a,
|
||||
$args/foo:b) )" />
|
||||
<param name="args" select="()" />
|
||||
</call>
|
||||
|
||||
<expect label="retains target QName"
|
||||
test="f:QName( $x:result ) = f:QName( $test-fn )" />
|
||||
|
||||
<expect label="retains previous reference arity"
|
||||
test="f:arity( $x:result ) = f:arity( $test-fn ) - 2" />
|
||||
|
||||
<expect label="retains previous arguments by reference"
|
||||
test="f:args( $x:result )[ 1 ] is $args/foo:a
|
||||
and f:args( $x:result )[ 2 ] is $args/foo:b" />
|
||||
</scenario>
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="f:unshift-args mutator">
|
||||
<scenario label="unshifting arguments onto empty reference list">
|
||||
<call function="f:unshift-args">
|
||||
<param name="fnref"
|
||||
select="$test-fn" />
|
||||
<param name="args"
|
||||
select="$args/foo:a,
|
||||
$args/foo:b" />
|
||||
</call>
|
||||
|
||||
<expect label="retains target QName"
|
||||
test="f:QName( $x:result ) = f:QName( $test-fn )" />
|
||||
|
||||
<expect label="reduces arity by number of arguments, relative to
|
||||
target function"
|
||||
test="f:arity( $x:result ) = f:arity( $test-fn ) - 2" />
|
||||
|
||||
<expect label="sets arguments by reference"
|
||||
test="f:args( $x:result )[ 1 ] is $args/foo:a
|
||||
and f:args( $x:result )[ 2 ] is $args/foo:b" />
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="unshifting arguments onto populated reference
|
||||
list">
|
||||
<call function="f:unshift-args">
|
||||
<param name="fnref"
|
||||
select="f:set-args( $test-fn,
|
||||
($args/foo:a,
|
||||
$args/foo:b) )" />
|
||||
<param name="args"
|
||||
select="$args/foo:c,
|
||||
$args/foo:d" />
|
||||
</call>
|
||||
|
||||
<expect label="retains target QName"
|
||||
test="f:QName( $x:result ) = f:QName( $test-fn )" />
|
||||
|
||||
<expect label="reduces arity by number of arguments, relative to
|
||||
previous arity"
|
||||
test="f:arity( $x:result ) = f:arity( $test-fn ) - 4" />
|
||||
|
||||
<expect label="retains previous arguments by reference"
|
||||
test="f:args( $x:result )[ 3 ] is $args/foo:a
|
||||
and f:args( $x:result )[ 4 ] is $args/foo:b" />
|
||||
|
||||
<expect label="unshifts new arguments by reference"
|
||||
test="f:args( $x:result )[ 1 ] is $args/foo:c
|
||||
and f:args( $x:result )[ 2 ] is $args/foo:d" />
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="unshifting empty argument list onto populated
|
||||
reference list">
|
||||
<call function="f:unshift-args">
|
||||
<param name="fnref"
|
||||
select="f:set-args( $test-fn,
|
||||
($args/foo:a,
|
||||
$args/foo:b) )" />
|
||||
<param name="args" select="()" />
|
||||
</call>
|
||||
|
||||
<expect label="retains target QName"
|
||||
test="f:QName( $x:result ) = f:QName( $test-fn )" />
|
||||
|
||||
<expect label="retains previous reference arity"
|
||||
test="f:arity( $x:result ) = f:arity( $test-fn ) - 2" />
|
||||
|
||||
<expect label="retains previous arguments by reference"
|
||||
test="f:args( $x:result )[ 1 ] is $args/foo:a
|
||||
and f:args( $x:result )[ 2 ] is $args/foo:b" />
|
||||
</scenario>
|
||||
</scenario>
|
||||
</description>
|
||||
|
|
@ -184,13 +184,39 @@
|
|||
|
||||
<!-- note that this _does not_ test f:arity itself: it is intended
|
||||
to test that the arity datum is properly generated -->
|
||||
<scenario label="f:arity">
|
||||
<call function="f:arity">
|
||||
<param name="fnref" select="foo:sub-two()" />
|
||||
</call>
|
||||
<scenario label="constructed dynamic function reference">
|
||||
<variable name="two-result"
|
||||
select="foo:sub-two()" />
|
||||
|
||||
<expect label="is able to determine arity"
|
||||
test="$x:result = 2" />
|
||||
<scenario label="is recognized as">
|
||||
<call function="f:is-ref">
|
||||
<param name="fnref" select="$two-result" />
|
||||
</call>
|
||||
|
||||
<expect label="a dynamic function reference"
|
||||
select="true()" />
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="target QName">
|
||||
<call function="f:QName">
|
||||
<param name="fnref" select="$two-result" />
|
||||
</call>
|
||||
|
||||
<expect label="is the QName of the target function"
|
||||
select="QName( 'http://www.lovullo.com/_junk',
|
||||
'sub-two' )" />
|
||||
</scenario>
|
||||
|
||||
|
||||
<scenario label="arity">
|
||||
<call function="f:arity">
|
||||
<param name="fnref" select="$two-result" />
|
||||
</call>
|
||||
|
||||
<expect label="is the arity of target function"
|
||||
select="2" />
|
||||
</scenario>
|
||||
</scenario>
|
||||
</scenario>
|
||||
</description>
|
||||
|
|
|
|||
Loading…
Reference in New Issue