| /* |
| * @(#)$Id$ |
| * |
| * The Apache Software License, Version 1.1 |
| * |
| * |
| * Copyright (c) 2001-2003 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 Morten Jorgensen |
| * |
| */ |
| |
| package org.apache.xalan.xsltc.compiler; |
| |
| import org.apache.bcel.generic.ConstantPoolGen; |
| import org.apache.bcel.generic.GETFIELD; |
| import org.apache.bcel.generic.INVOKEINTERFACE; |
| import org.apache.bcel.generic.INVOKEVIRTUAL; |
| import org.apache.bcel.generic.PUSH; |
| import org.apache.bcel.generic.InstructionList; |
| import org.apache.xalan.xsltc.compiler.util.ClassGenerator; |
| import org.apache.xalan.xsltc.compiler.util.MethodGenerator; |
| import org.apache.xalan.xsltc.compiler.util.Type; |
| import org.apache.xalan.xsltc.compiler.util.TypeCheckError; |
| |
| final class Comment extends Instruction { |
| |
| public void parseContents(Parser parser) { |
| parseChildren(parser); |
| } |
| |
| public Type typeCheck(SymbolTable stable) throws TypeCheckError { |
| typeCheckContents(stable); |
| return Type.String; |
| } |
| |
| public void translate(ClassGenerator classGen, MethodGenerator methodGen) { |
| final ConstantPoolGen cpg = classGen.getConstantPool(); |
| final InstructionList il = methodGen.getInstructionList(); |
| |
| // Shortcut for literal strings |
| Text rawText = null; |
| if (elementCount() == 1) { |
| Object content = elementAt(0); |
| if (content instanceof Text) { |
| rawText = (Text) content; |
| } |
| } |
| |
| // If the content is literal text, call comment(char[],int,int) or |
| // comment(String), as appropriate. Otherwise, use a |
| // StringValueHandler to gather the textual content of the xsl:comment |
| // and call comment(String) with the result. |
| if (rawText != null) { |
| il.append(methodGen.loadHandler()); |
| |
| if (rawText.canLoadAsArrayOffsetLength()) { |
| rawText.loadAsArrayOffsetLength(classGen, methodGen); |
| final int comment = |
| cpg.addInterfaceMethodref(TRANSLET_OUTPUT_INTERFACE, |
| "comment", |
| "([CII)V"); |
| il.append(new INVOKEINTERFACE(comment, 4)); |
| } else { |
| il.append(new PUSH(cpg, rawText.getText())); |
| final int comment = |
| cpg.addInterfaceMethodref(TRANSLET_OUTPUT_INTERFACE, |
| "comment", |
| "(" + STRING_SIG + ")V"); |
| il.append(new INVOKEINTERFACE(comment, 2)); |
| } |
| } else { |
| // Save the current handler base on the stack |
| il.append(methodGen.loadHandler()); |
| il.append(DUP); // first arg to "comment" call |
| |
| // Get the translet's StringValueHandler |
| il.append(classGen.loadTranslet()); |
| il.append(new GETFIELD(cpg.addFieldref(TRANSLET_CLASS, |
| "stringValueHandler", |
| STRING_VALUE_HANDLER_SIG))); |
| il.append(DUP); |
| il.append(methodGen.storeHandler()); |
| |
| // translate contents with substituted handler |
| translateContents(classGen, methodGen); |
| |
| // get String out of the handler |
| il.append(new INVOKEVIRTUAL(cpg.addMethodref(STRING_VALUE_HANDLER, |
| "getValue", |
| "()" + STRING_SIG))); |
| // call "comment" |
| final int comment = |
| cpg.addInterfaceMethodref(TRANSLET_OUTPUT_INTERFACE, |
| "comment", |
| "(" + STRING_SIG + ")V"); |
| il.append(new INVOKEINTERFACE(comment, 2)); |
| // Restore old handler base from stack |
| il.append(methodGen.storeHandler()); |
| } |
| } |
| } |