| /* |
| * @(#)$Id$ |
| * |
| * The Apache Software License, Version 1.1 |
| * |
| * |
| * Copyright (c) 2001 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) 2001, Sun |
| * Microsystems., http://www.sun.com. For more |
| * information on the Apache Software Foundation, please see |
| * <http://www.apache.org/>. |
| * |
| * @author Morten Jorgensen |
| * |
| */ |
| |
| package org.apache.xalan.xsltc.compiler; |
| |
| import java.util.Vector; |
| import java.util.Enumeration; |
| |
| import org.apache.xalan.xsltc.compiler.util.Type; |
| import org.apache.xalan.xsltc.compiler.util.ReferenceType; |
| import org.apache.bcel.generic.*; |
| |
| import org.apache.xalan.xsltc.compiler.util.*; |
| |
| final class ApplyImports extends Instruction { |
| |
| private QName _modeName; |
| private String _functionName; |
| private int _precedence; |
| |
| public void display(int indent) { |
| indent(indent); |
| Util.println("ApplyTemplates"); |
| indent(indent + IndentIncrement); |
| if (_modeName != null) { |
| indent(indent + IndentIncrement); |
| Util.println("mode " + _modeName); |
| } |
| } |
| |
| /** |
| * Returns true if this <xsl:apply-imports/> element has parameters |
| */ |
| public boolean hasWithParams() { |
| return hasContents(); |
| } |
| |
| /** |
| * Determine the lowest import precedence for any stylesheet imported |
| * or included by the stylesheet in which this <xsl:apply-imports/> |
| * element occured. The templates that are imported by the stylesheet in |
| * which this element occured will all have higher import precedence than |
| * the integer returned by this method. |
| */ |
| private int getMinPrecedence(int max) { |
| Stylesheet stylesheet = getStylesheet(); |
| Stylesheet root = getParser().getTopLevelStylesheet(); |
| |
| int min = max; |
| |
| Enumeration templates = root.getContents().elements(); |
| while (templates.hasMoreElements()) { |
| SyntaxTreeNode child = (SyntaxTreeNode)templates.nextElement(); |
| if (child instanceof Template) { |
| Stylesheet curr = child.getStylesheet(); |
| while ((curr != null) && (curr != stylesheet)) { |
| if (curr._importedFrom != null) |
| curr = curr._importedFrom; |
| else if (curr._includedFrom != null) |
| curr = curr._includedFrom; |
| else |
| curr = null; |
| } |
| if (curr == stylesheet) { |
| int prec = child.getStylesheet().getImportPrecedence(); |
| if (prec < min) min = prec; |
| } |
| } |
| } |
| return (min); |
| } |
| |
| /** |
| * Parse the attributes and contents of an <xsl:apply-imports/> element. |
| */ |
| public void parseContents(Parser parser) { |
| // Indicate to the top-level stylesheet that all templates must be |
| // compiled into separate methods. |
| Stylesheet stylesheet = getStylesheet(); |
| stylesheet.compileTemplatesAsMethods(); |
| |
| // Get the mode we are currently in (might not be any) |
| Template template = getTemplate(); |
| _modeName = template.getModeName(); |
| _precedence = template.getImportPrecedence(); |
| |
| // Get the method name for <xsl:apply-imports/> in this mode |
| stylesheet = parser.getTopLevelStylesheet(); |
| |
| // Get the [min,max> precedence of all templates imported under the |
| // current stylesheet |
| final int maxPrecedence = _precedence; |
| final int minPrecedence = getMinPrecedence(maxPrecedence); |
| final Mode mode = stylesheet.getMode(_modeName); |
| _functionName = mode.functionName(minPrecedence, maxPrecedence); |
| |
| parseChildren(parser); // with-params |
| } |
| |
| /** |
| * Type-check the attributes/contents of an <xsl:apply-imports/> element. |
| */ |
| public Type typeCheck(SymbolTable stable) throws TypeCheckError { |
| typeCheckContents(stable); // with-params |
| return Type.Void; |
| } |
| |
| /** |
| * Translate call-template. A parameter frame is pushed only if |
| * some template in the stylesheet uses parameters. |
| */ |
| public void translate(ClassGenerator classGen, MethodGenerator methodGen) { |
| final Stylesheet stylesheet = classGen.getStylesheet(); |
| final ConstantPoolGen cpg = classGen.getConstantPool(); |
| final InstructionList il = methodGen.getInstructionList(); |
| final int current = methodGen.getLocalIndex("current"); |
| |
| // Push the arguments that are passed to applyTemplates() |
| il.append(classGen.loadTranslet()); |
| il.append(methodGen.loadDOM()); |
| // Wrap the current node inside an iterator |
| int init = cpg.addMethodref(SINGLETON_ITERATOR, |
| "<init>", "("+NODE_SIG+")V"); |
| il.append(new NEW(cpg.addClass(SINGLETON_ITERATOR))); |
| il.append(DUP); |
| il.append(methodGen.loadCurrentNode()); |
| il.append(new INVOKESPECIAL(init)); |
| |
| il.append(methodGen.loadHandler()); |
| |
| // Construct the translet class-name and the signature of the method |
| final String className = classGen.getStylesheet().getClassName(); |
| final String signature = classGen.getApplyTemplatesSig(); |
| final int applyTemplates = cpg.addMethodref(className, |
| _functionName, |
| signature); |
| il.append(new INVOKEVIRTUAL(applyTemplates)); |
| } |
| |
| } |