- /*
- * The Apache Software License, Version 1.1
- *
- *
- * Copyright (c) 1999 The Apache Software Foundation. All rights
- * reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- *
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- *
- * 3. The end-user documentation included with the redistribution,
- * if any, must include the following acknowledgment:
- * "This product includes software developed by the
- * Apache Software Foundation (http://www.apache.org/)."
- * Alternately, this acknowledgment may appear in the software itself,
- * if and wherever such third-party acknowledgments normally appear.
- *
- * 4. The names "Xalan" and "Apache Software Foundation" must
- * not be used to endorse or promote products derived from this
- * software without prior written permission. For written
- * permission, please contact apache@apache.org.
- *
- * 5. Products derived from this software may not be called "Apache",
- * nor may "Apache" appear in their name, without prior written
- * permission of the Apache Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
- * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
- * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- * ====================================================================
- *
- * This software consists of voluntary contributions made by many
- * individuals on behalf of the Apache Software Foundation and was
- * originally based on software copyright (c) 1999, Lotus
- * Development Corporation., http://www.lotus.com. For more
- * information on the Apache Software Foundation, please see
- * <http://www.apache.org/>.
- */
- package org.apache.xalan.templates;
-
- import javax.xml.transform.SourceLocator;
- import javax.xml.transform.TransformerException;
- import org.apache.xalan.res.XSLTErrorResources;
- import org.apache.xalan.transformer.TransformerImpl;
- import org.apache.xml.utils.QName;
- import org.apache.xpath.VariableStack;
- import org.apache.xpath.XPathContext;
- import org.apache.xpath.objects.XObject;
-
- /**
- * <meta name="usage" content="advanced"/>
- * Implement xsl:call-template.
- * <pre>
- * &!ELEMENT xsl:call-template (xsl:with-param)*>
- * &!ATTLIST xsl:call-template
- * name %qname; #REQUIRED
- * &
- * </pre>
- * @see <a href="http://www.w3.org/TR/xslt#named-templates">named-templates in XSLT Specification</a>
- */
- public class ElemCallTemplate extends ElemForEach
- {
-
- /**
- * An xsl:call-template element invokes a template by name;
- * it has a required name attribute that identifies the template to be invoked.
- * @serial
- */
- public QName m_templateName = null;
-
- /**
- * Set the "name" attribute.
- * An xsl:call-template element invokes a template by name;
- * it has a required name attribute that identifies the template to be invoked.
- *
- * @param name Name attribute to set
- */
- public void setName(QName name)
- {
- m_templateName = name;
- }
-
- /**
- * Get the "name" attribute.
- * An xsl:call-template element invokes a template by name;
- * it has a required name attribute that identifies the template to be invoked.
- *
- * @return Name attribute of this element
- */
- public QName getName()
- {
- return m_templateName;
- }
-
- /**
- * The template which is named by QName.
- * @serial
- */
- private ElemTemplate m_template = null;
-
- /**
- * Get an int constant identifying the type of element.
- * @see org.apache.xalan.templates.Constants
- *
- * @return The token ID for this element
- */
- public int getXSLToken()
- {
- return Constants.ELEMNAME_CALLTEMPLATE;
- }
-
- /**
- * Return the node name.
- *
- * @return The name of this element
- */
- public String getNodeName()
- {
- return Constants.ELEMNAME_CALLTEMPLATE_STRING;
- }
-
- /**
- * This function is called after everything else has been
- * recomposed, and allows the template to set remaining
- * values that may be based on some other property that
- * depends on recomposition.
- */
- public void compose(StylesheetRoot sroot) throws TransformerException
- {
- super.compose(sroot);
-
- // Call compose on each param no matter if this is apply-templates
- // or call templates.
- int length = getParamElemCount();
- for (int i = 0; i < length; i++)
- {
- ElemWithParam ewp = getParamElem(i);
- ewp.compose(sroot);
- }
-
- if ((null != m_templateName) && (null == m_template))
- {
- m_template =
- this.getStylesheetRoot().getTemplateComposed(m_templateName);
-
- if(null == m_template)
- return; // %REVIEW% error?
-
- length = getParamElemCount();
- for (int i = 0; i < length; i++)
- {
- ElemWithParam ewp = getParamElem(i);
- ewp.m_index = -1;
- // Find the position of the param in the template being called,
- // and set the index of the param slot.
- int etePos = 0;
- for (ElemTemplateElement ete = m_template.getFirstChildElem();
- null != ete; ete = ete.getNextSiblingElem())
- {
- if(ete.getXSLToken() == Constants.ELEMNAME_PARAMVARIABLE)
- {
- ElemParam ep = (ElemParam)ete;
- if(ep.getName().equals(ewp.getName()))
- {
- ewp.m_index = etePos;
- }
- }
- else
- break;
- etePos++;
- }
-
- }
- }
- }
-
- /**
- * This after the template's children have been composed.
- */
- public void endCompose(StylesheetRoot sroot) throws TransformerException
- {
- int length = getParamElemCount();
- for (int i = 0; i < length; i++)
- {
- ElemWithParam ewp = getParamElem(i);
- ewp.endCompose(sroot);
- }
-
- super.endCompose(sroot);
- }
-
- /**
- * Invoke a named template.
- * @see <a href="http://www.w3.org/TR/xslt#named-templates">named-templates in XSLT Specification</a>
- *
- * @param transformer non-null reference to the the current transform-time state.
- * @param sourceNode non-null reference to the <a href="http://www.w3.org/TR/xslt#dt-current-node">current source node</a>.
- * @param mode reference, which may be null, to the <a href="http://www.w3.org/TR/xslt#modes">current mode</a>.
- *
- * @throws TransformerException
- */
- public void execute(
- TransformerImpl transformer)
- throws TransformerException
- {
-
- if (TransformerImpl.S_DEBUG)
- transformer.getTraceManager().fireTraceEvent(this);
-
- if (null != m_template)
- {
- XPathContext xctxt = transformer.getXPathContext();
- VariableStack vars = xctxt.getVarStack();
-
- int thisframe = vars.getStackFrame();
- int nextFrame = vars.link(m_template.m_frameSize);
-
- // We have to clear the section of the stack frame that has params
- // so that the default param evaluation will work correctly.
- if(m_template.m_inArgsSize > 0)
- {
- vars.clearLocalSlots(0, m_template.m_inArgsSize);
-
- if(null != m_paramElems)
- {
- int currentNode = xctxt.getCurrentNode();
- vars.setStackFrame(thisframe);
- int size = m_paramElems.length;
-
- for (int i = 0; i < size; i++)
- {
- ElemWithParam ewp = m_paramElems[i];
- if(ewp.m_index >= 0)
- {
- XObject obj = ewp.getValue(transformer, currentNode);
-
- // Note here that the index for ElemWithParam must have been
- // statically made relative to the xsl:template being called,
- // NOT this xsl:template.
- vars.setLocalVariable(ewp.m_index, obj, nextFrame);
- }
- }
- vars.setStackFrame(nextFrame);
- }
- }
-
- SourceLocator savedLocator = xctxt.getSAXLocator();
-
- try
- {
- xctxt.setSAXLocator(m_template);
-
- // template.executeChildTemplates(transformer, sourceNode, mode, true);
- transformer.pushElemTemplateElement(m_template);
- m_template.execute(transformer);
- }
- finally
- {
- transformer.popElemTemplateElement();
- xctxt.setSAXLocator(savedLocator);
- // When we entered this function, the current
- // frame buffer (cfb) index in the variable stack may
- // have been manually set. If we just call
- // unlink(), however, it will restore the cfb to the
- // previous link index from the link stack, rather than
- // the manually set cfb. So,
- // the only safe solution is to restore it back
- // to the same position it was on entry, since we're
- // really not working in a stack context here. (Bug4218)
- vars.unlink(thisframe);
- }
- }
- else
- {
- transformer.getMsgMgr().error(this, XSLTErrorResources.ER_TEMPLATE_NOT_FOUND,
- new Object[]{ m_templateName }); //"Could not find template named: '"+templateName+"'");
- }
-
- if (TransformerImpl.S_DEBUG)
- transformer.getTraceManager().fireTraceEndEvent(this);
-
- }
-
- /** Vector of xsl:param elements associated with this element.
- * @serial */
- protected ElemWithParam[] m_paramElems = null;
-
- /**
- * Get the count xsl:param elements associated with this element.
- * @return The number of xsl:param elements.
- */
- public int getParamElemCount()
- {
- return (m_paramElems == null) ? 0 : m_paramElems.length;
- }
-
- /**
- * Get a xsl:param element associated with this element.
- *
- * @param i Index of element to find
- *
- * @return xsl:param element at given index
- */
- public ElemWithParam getParamElem(int i)
- {
- return m_paramElems[i];
- }
-
- /**
- * Set a xsl:param element associated with this element.
- *
- * @param ParamElem xsl:param element to set.
- */
- public void setParamElem(ElemWithParam ParamElem)
- {
- if (null == m_paramElems)
- {
- m_paramElems = new ElemWithParam[1];
- m_paramElems[0] = ParamElem;
- }
- else
- {
- // Expensive 1 at a time growth, but this is done at build time, so
- // I think it's OK.
- int length = m_paramElems.length;
- ElemWithParam[] ewp = new ElemWithParam[length + 1];
- System.arraycopy(m_paramElems, 0, ewp, 0, length);
- m_paramElems = ewp;
- ewp[length] = ParamElem;
- }
- }
-
- /**
- * Add a child to the child list.
- * <!ELEMENT xsl:apply-templates (xsl:sort|xsl:with-param)*>
- * <!ATTLIST xsl:apply-templates
- * select %expr; "node()"
- * mode %qname; #IMPLIED
- * >
- *
- * @param newChild Child to add to this node's children list
- *
- * @return The child that was just added the children list
- *
- * @throws DOMException
- */
- public ElemTemplateElement appendChild(ElemTemplateElement newChild)
- {
-
- int type = ((ElemTemplateElement) newChild).getXSLToken();
-
- if (Constants.ELEMNAME_WITHPARAM == type)
- {
- setParamElem((ElemWithParam) newChild);
- }
-
- // You still have to append, because this element can
- // contain a for-each, and other elements.
- return super.appendChild(newChild);
- }
-
- /**
- * Call the children visitors.
- * @param visitor The visitor whose appropriate method will be called.
- */
- public void callChildVisitors(XSLTVisitor visitor, boolean callAttrs)
- {
- // if (null != m_paramElems)
- // {
- // int size = m_paramElems.length;
- //
- // for (int i = 0; i < size; i++)
- // {
- // ElemWithParam ewp = m_paramElems[i];
- // ewp.callVisitors(visitor);
- // }
- // }
-
- super.callChildVisitors(visitor, callAttrs);
- }
- }