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path: root/test/test-to-c.xsl
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<?xml version="1.0" encoding="ISO-8859-1"?>
<!--   
This transform generates C source code from a language independent
test representation.
-->

<xsl:stylesheet version="1.0" 
    xmlns:xsl="http://www.w3.org/1999/XSL/Transform"
    xmlns:str="http://exslt.org/strings"><!-- TODO: exslt not currently used -->
	<xsl:param name="interfaces-docname">dom1-interfaces.xml</xsl:param>
	<xsl:param name="target-uri-base">http://www.w3.org/2001/DOM-Test-Suite/tests/Level-1/</xsl:param>
	<xsl:output method="text" encoding="UTF-8"/>
	<xsl:variable name="domspec" select="document($interfaces-docname)"/>


<!-- swallow any text which we don't understand -->
<xsl:template match="text()" mode="body"/>

<!--
for anything that doesn't match another template,
we expect this the element to be found in the library located
at $interfaces-docname.

This should either be a <method> or <attribute>.  If it is neither,
we generate an <xsl:message> reporting that the element is not known.
-->
<xsl:template match="*"  mode="body">
	<!-- the element name matches by this template -->
	<xsl:variable name="feature" select="local-name(.)"/>
	<xsl:variable name="interface" select="@interface"/>
	
	<!--
	Try to find a method having the @name of $feature.
	If $interface is defined, make sure search for
	a match on that interface in the $domspec document.
	-->
	<xsl:variable name="method" select="$domspec/library/interface[not($interface) or @name = $interface]/method[@name = $feature]"/>
	<xsl:choose>
		<xsl:when test="$method">
			<xsl:call-template name="produce-method">
				<xsl:with-param name="method" select="$method"/>
				<!-- TODO: vardefs not yet done <xsl:with-param name="vardefs" select="$vardefs"/>-->
            		</xsl:call-template>
		</xsl:when>
		<xsl:otherwise>
			<!--
			Try to find an attribute having the name of $feature.
			Again, if $interface is defined, restrict the search to
			that interface
			-->
			<xsl:variable name="attribute" select="$domspec/library/interface[not($interface) or @name = $interface]/attribute[@name = $feature]"/>
			<xsl:choose>
				<xsl:when test="$attribute">
					<xsl:call-template name="produce-attribute">
						<!-- TODO: vardefs not yet done <xsl:with-param name="vardefs" select="$vardefs"/> -->
					</xsl:call-template>
				</xsl:when>
				
				<xsl:otherwise>
					<xsl:message>Unrecognized element <xsl:value-of select="local-name(.)"/></xsl:message>
				</xsl:otherwise>
			</xsl:choose>
		</xsl:otherwise>
    </xsl:choose>
</xsl:template>

<xsl:template match="/">
    <xsl:apply-templates/>
</xsl:template>

<xsl:template match="*[local-name() = 'test']">
	<xsl:apply-templates select="*[local-name() = 'metadata']"/>
<xsl:text>
int main(int argc, char **argv)
{
	dom_exception err;
</xsl:text>
<xsl:apply-templates mode="body"/>
<xsl:text>
	return 0;
}
</xsl:text>
</xsl:template>

<xsl:template match="*[local-name() = 'metadata']">
	<xsl:text>/**
</xsl:text>
	<xsl:call-template name="emit-description">
		<xsl:with-param name="description" select="translate(*[local-name() = 'description'], '&#9;', ' ')"/>
	</xsl:call-template>
	<xsl:text> */</xsl:text>
</xsl:template>

<!-- swallowing templates in body mode -->
<xsl:template match="*[local-name()='metadata']" mode="body"/>

<!--
================================
Language construct templates
================================
-->

<xsl:template match="*[local-name() = 'var']" mode="body">
<xsl:text>	struct </xsl:text><xsl:call-template name="convert_var_type"> <xsl:with-param name="var_type" select="@type"/>
</xsl:call-template> *<xsl:value-of select="@name"/>;
</xsl:template>

<xsl:template match="*[local-name() = 'if']" mode="body">
<xsl:text>
	if (</xsl:text><xsl:apply-templates select="*[1]" mode="body"/><xsl:text>) {
</xsl:text>
<xsl:apply-templates select="*[position() &gt; 1 and local-name() != 'else']" mode="body"/>
<xsl:text>	}</xsl:text>
<xsl:for-each select="*[local-name() = 'else']">
	<xsl:text> else {
	</xsl:text>
	<xsl:apply-templates mode="body"/>
	<xsl:text>}</xsl:text>
</xsl:for-each>
<xsl:text>
</xsl:text>
</xsl:template>

<!--
================================
DOM templates
================================
-->

<xsl:template match="*[local-name() = 'contentType']" mode="body">
	<xsl:text>strcmp(TODO, "</xsl:text><xsl:value-of select="@type"/><xsl:text>") == 0</xsl:text>
</xsl:template>

<xsl:template name="produce-method">
<!-- TODO: implement me -->
</xsl:template>

<xsl:template name="produce-attribute">
	<!-- <xsl:param name="vardefs"/> -->
	<xsl:variable name="attribName" select="local-name(.)"/>
	<xsl:choose>
		<!--  if interface is specified -->
		<xsl:when test="@interface">
			<xsl:variable name="interface" select="@interface"/>
			<xsl:call-template name="produce-specific-attribute">
				<xsl:with-param name="attribute" select="$domspec/library/interface[@name = $interface]/attribute[@name = $attribName]"/>
				<!-- <xsl:with-param name="vardefs" select="$vardefs"/> -->
			</xsl:call-template>
		</xsl:when>
		<xsl:otherwise>
			<xsl:call-template name="produce-specific-attribute">
				<xsl:with-param name="attribute" select="$domspec/library/interface/attribute[@name = $attribName]"/>
				<!-- <xsl:with-param name="vardefs" select="$vardefs"/> -->
			</xsl:call-template>
		</xsl:otherwise>
    </xsl:choose>
</xsl:template>

<xsl:template name="produce-specific-attribute">
	<!-- <xsl:param name="vardefs"/> -->
	<xsl:param name="attribute"/>
	<xsl:variable name="obj" select="@obj"/>
	<xsl:variable name="value" select="@value"/>
	<!--  check if attribute name starts with is  -->
	<xsl:if test="@value">
		<!-- TODO: set attribute to a value -->
	</xsl:if>
	<!--
	call an attribute accessor.  this takes the form
	err = dom_<objecttype>_get_<attributename>(<objectstruct>, &<targetattributestruct>);
	-->
	<xsl:if test="@var">
		<xsl:text>
	err = </xsl:text>
	<xsl:call-template name="convert_var_type">
		<xsl:with-param name="var_type"><xsl:value-of select="//*[local-name() = 'var' and @name = $obj]/@type"/></xsl:with-param>
	</xsl:call-template>
	<xsl:text>_get_</xsl:text>
	<xsl:call-template name="convert_attribute_name">
		<xsl:with-param name="attribute_name"><xsl:value-of select="$attribute/@name"/></xsl:with-param>
	</xsl:call-template>
	<xsl:text>(</xsl:text><xsl:value-of select="@obj"/><xsl:text>, &amp;</xsl:text><xsl:value-of select="@var"/><xsl:text>);
	assert(err == DOM_NO_ERR);
</xsl:text>

	</xsl:if>
</xsl:template>

<!--
================================
Assert templates
================================
-->

<xsl:template match="*[local-name() = 'assertNotNull']" mode="body">
	<!-- TODO: what does the @id string do, and do we need it here? -->
	<xsl:text>
	assert(</xsl:text><xsl:value-of select="@actual"/><xsl:text> != NULL);
</xsl:text>
</xsl:template>

<xsl:template match="*[local-name() = 'assertNull']" mode="body">
	<!-- TODO: what does the @id string do, and do we need it here? -->
	<xsl:text>
	assert(</xsl:text><xsl:value-of select="@actual"/><xsl:text> == NULL);
	</xsl:text>
</xsl:template>

<xsl:template match="*[local-name() = 'assertEquals']" mode="body">
	<!--
	TODO: this is hard, because we need to know what the types of the objects are
	that we're comparing
	-->
	<xsl:variable name="actual" select="@actual"/>
	<xsl:variable name="var_type" select="//*[local-name() = 'var' and @name = $actual]/@type"/>
	
	<xsl:choose>
		<xsl:when test="$var_type = 'DOMString'">
			<xsl:text>	struct dom_string *match;
	err = dom_string_create_from_const_ptr(doc <!-- TODO: how do we obtain a handle to doc?  We could lookup //var[@type = 'Document', but what if there's more than one? -->, </xsl:text><xsl:value-of select="@expected"/><xsl:text>,
		SLEN(</xsl:text><xsl:value-of select="@expected"/><xsl:text>), &amp;match);
	assert(err == DOM_NO_ERR); <!-- TODO: pull this line out, since it's reused everywhere -->
	assert(dom_string_cmp(</xsl:text><xsl:value-of select="@actual"/><xsl:text>, match) == 0); <!-- TODO: handle case insensitivity if @insensitive is set-->
</xsl:text>
		</xsl:when>
		<xsl:otherwise>
			<xsl:message terminate="no">Warning in assertEquals template: don't know how to compare variable type '<xsl:value-of select="$var_type"/>'</xsl:message>
		</xsl:otherwise>
	</xsl:choose>
</xsl:template>

<!-- helper templates -->

<xsl:template name="convert_var_type">
<!-- TODO: convert certain types, e.g. from DocumentType to dom_document_type -->
	<xsl:param name="var_type"/>
	<xsl:text>dom_</xsl:text>
	<xsl:choose>
		<xsl:when test="$var_type = 'Document'">
			<xsl:text>document</xsl:text>
		</xsl:when>
		<xsl:when test="$var_type = 'DocumentType'">
			<xsl:text>document_type</xsl:text>
		</xsl:when>
		<xsl:when test="$var_type = 'DOMString'">
			<xsl:text>string</xsl:text>
		</xsl:when>
		<xsl:otherwise>
			<xsl:message terminate="no">Warning in convert_var_type template: unrecognised variable type '<xsl:value-of select="$var_type"/>'</xsl:message>
			<xsl:value-of select="$var_type"/>
		</xsl:otherwise>
	</xsl:choose>
</xsl:template>

<xsl:template name="convert_attribute_name">
	<xsl:param name="attribute_name"/>
	<xsl:message><xsl:value-of select="$attribute_name"/></xsl:message>
	<xsl:choose>
		<xsl:when test="$attribute_name = 'nodeValue'">
			<xsl:text>node_value</xsl:text>
		</xsl:when>
		<xsl:otherwise>
			<!-- assume no conversion is needed -->
			<xsl:text><xsl:value-of select="$attribute_name"/></xsl:text>
		</xsl:otherwise>
	</xsl:choose>
</xsl:template>

<!--
stolen from test-to-java.xsl
Prepends every line with asterisks, suitable for use in a block comment
-->
<xsl:template name="emit-description">
	<xsl:param name="description"/>
	<xsl:choose>
		<xsl:when test="contains($description, '&#xA;')">
			<xsl:variable name="preceding" select="substring-before($description, '&#xA;')"/>
			<xsl:if test="string-length($preceding) &gt; 0">		
				<xsl:text> * </xsl:text>
				<xsl:value-of select="substring-before($description, '&#xA;')"/>
<xsl:text>
</xsl:text>
			</xsl:if>
			<xsl:variable name="following" select="substring-after($description, '&#xA;')"/>
			<xsl:if test="string-length($following) &gt; 0">
				<xsl:call-template name="emit-description">
					<xsl:with-param name="description" select="substring-after($description, '&#xA;')"/>
				</xsl:call-template>
			</xsl:if>
		</xsl:when>
		<xsl:otherwise>
			<xsl:text> * </xsl:text>
			<xsl:value-of select="$description"/>
			<xsl:text>
			</xsl:text>
		</xsl:otherwise>
	</xsl:choose>
</xsl:template>

</xsl:stylesheet>