| /* |
| * @(#)$Id$ |
| * |
| * 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 Jacek Ambroziak |
| * @author Santiago Pericas-Geertsen |
| * @author Erwin Bolwidt <ejb@klomp.org> |
| * |
| */ |
| |
| package org.apache.xalan.xsltc.compiler; |
| |
| import javax.xml.parsers.*; |
| |
| import org.xml.sax.*; |
| |
| import org.apache.xalan.xsltc.compiler.util.Type; |
| import org.apache.bcel.generic.*; |
| import org.apache.xalan.xsltc.compiler.util.*; |
| |
| final class CallTemplate extends Instruction { |
| private QName _name; |
| |
| public void display(int indent) { |
| indent(indent); |
| System.out.print("CallTemplate"); |
| Util.println(" name " + _name); |
| displayContents(indent + IndentIncrement); |
| } |
| |
| public boolean hasWithParams() { |
| return elementCount() > 0; |
| } |
| |
| public void parseContents(Parser parser) { |
| _name = parser.getQName(getAttribute("name")); |
| parseChildren(parser); |
| } |
| |
| /** |
| * Verify that a template with this name exists. |
| */ |
| public Type typeCheck(SymbolTable stable) throws TypeCheckError { |
| final Template template = stable.lookupTemplate(_name); |
| if (template != null) { |
| typeCheckContents(stable); |
| } |
| else { |
| ErrorMsg err = new ErrorMsg(ErrorMsg.TEMPLATE_UNDEF_ERR,_name,this); |
| throw new TypeCheckError(err); |
| } |
| return Type.Void; |
| } |
| |
| /** |
| * Translate call-template. |
| * A parameter frame is pushed only if some template in the stylesheet |
| * uses parameters. |
| * TODO: optimize by checking if the callee has parameters. |
| */ |
| public void translate(ClassGenerator classGen, MethodGenerator methodGen) { |
| final Stylesheet stylesheet = classGen.getStylesheet(); |
| final ConstantPoolGen cpg = classGen.getConstantPool(); |
| final InstructionList il = methodGen.getInstructionList(); |
| |
| |
| if (stylesheet.hasLocalParams() || hasContents()) { |
| // Push parameter frame |
| final int push = cpg.addMethodref(TRANSLET_CLASS, |
| PUSH_PARAM_FRAME, |
| PUSH_PARAM_FRAME_SIG); |
| il.append(classGen.loadTranslet()); |
| il.append(new INVOKEVIRTUAL(push)); |
| // Translate with-params |
| translateContents(classGen, methodGen); |
| } |
| |
| final String className = stylesheet.getClassName(); |
| // Generate a valid Java method name |
| String methodName = Util.escape(_name.toString()); |
| |
| il.append(classGen.loadTranslet()); |
| il.append(methodGen.loadDOM()); |
| il.append(methodGen.loadIterator()); |
| il.append(methodGen.loadHandler()); |
| il.append(methodGen.loadCurrentNode()); |
| il.append(new INVOKEVIRTUAL(cpg.addMethodref(className, |
| methodName, |
| "(" |
| + DOM_INTF_SIG |
| + NODE_ITERATOR_SIG |
| + TRANSLET_OUTPUT_SIG |
| + NODE_SIG |
| +")V"))); |
| |
| |
| if (stylesheet.hasLocalParams() || hasContents()) { |
| // Pop parameter frame |
| final int pop = cpg.addMethodref(TRANSLET_CLASS, |
| POP_PARAM_FRAME, |
| POP_PARAM_FRAME_SIG); |
| il.append(classGen.loadTranslet()); |
| il.append(new INVOKEVIRTUAL(pop)); |
| } |
| } |
| } |