com.sun.org.apache.xalan.internal.xsltc.compiler.Message Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of jaxp-ri Show documentation
Show all versions of jaxp-ri Show documentation
Java API for XML Processing Reference Implementation
The newest version!
/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
*
* The contents of this file are subject to the terms of either the GNU
* General Public License Version 2 only ("GPL") or the Common Development
* and Distribution License("CDDL") (collectively, the "License"). You
* may not use this file except in compliance with the License. You can
* obtain a copy of the License at
* https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
* or packager/legal/LICENSE.txt. See the License for the specific
* language governing permissions and limitations under the License.
*
* When distributing the software, include this License Header Notice in each
* file and include the License file at packager/legal/LICENSE.txt.
*
* GPL Classpath Exception:
* Oracle designates this particular file as subject to the "Classpath"
* exception as provided by Oracle in the GPL Version 2 section of the License
* file that accompanied this code.
*
* Modifications:
* If applicable, add the following below the License Header, with the fields
* enclosed by brackets [] replaced by your own identifying information:
* "Portions Copyright [year] [name of copyright owner]"
*
* Contributor(s):
* If you wish your version of this file to be governed by only the CDDL or
* only the GPL Version 2, indicate your decision by adding "[Contributor]
* elects to include this software in this distribution under the [CDDL or GPL
* Version 2] license." If you don't indicate a single choice of license, a
* recipient has the option to distribute your version of this file under
* either the CDDL, the GPL Version 2 or to extend the choice of license to
* its licensees as provided above. However, if you add GPL Version 2 code
* and therefore, elected the GPL Version 2 license, then the option applies
* only if the new code is made subject to such option by the copyright
* holder.
*
*
* This file incorporates work covered by the following copyright and
* permission notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*
* $Id: Message.java,v 1.10 2010-11-01 04:34:16 joehw Exp $
*/
package com.sun.org.apache.xalan.internal.xsltc.compiler;
import com.sun.org.apache.bcel.internal.generic.ConstantPoolGen;
import com.sun.org.apache.bcel.internal.generic.INVOKESPECIAL;
import com.sun.org.apache.bcel.internal.generic.INVOKEVIRTUAL;
import com.sun.org.apache.bcel.internal.generic.InstructionList;
import com.sun.org.apache.bcel.internal.generic.NEW;
import com.sun.org.apache.bcel.internal.generic.PUSH;
import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ClassGenerator;
import com.sun.org.apache.xalan.internal.xsltc.compiler.util.MethodGenerator;
import com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type;
import com.sun.org.apache.xalan.internal.xsltc.compiler.util.TypeCheckError;
/**
* @author Jacek Ambroziak
* @author Santiago Pericas-Geertsen
* @author Morten Jorgensen
*/
final class Message extends Instruction {
private boolean _terminate = false;
public void parseContents(Parser parser) {
String termstr = getAttribute("terminate");
if (termstr != null) {
_terminate = termstr.equals("yes");
}
parseChildren(parser);
}
public Type typeCheck(SymbolTable stable) throws TypeCheckError {
typeCheckContents(stable);
return Type.Void;
}
public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
final ConstantPoolGen cpg = classGen.getConstantPool();
final InstructionList il = methodGen.getInstructionList();
// Load the translet (for call to displayMessage() function)
il.append(classGen.loadTranslet());
switch (elementCount()) {
case 0:
il.append(new PUSH(cpg, ""));
break;
case 1:
SyntaxTreeNode child = (SyntaxTreeNode) elementAt(0);
if (child instanceof Text) {
il.append(new PUSH(cpg, ((Text) child).getText()));
break;
}
// falls through
default:
// Push current output handler onto the stack
il.append(methodGen.loadHandler());
// Replace the current output handler by a ToXMLStream
il.append(new NEW(cpg.addClass(STREAM_XML_OUTPUT)));
il.append(methodGen.storeHandler());
// Push a reference to a StringWriter
il.append(new NEW(cpg.addClass(STRING_WRITER)));
il.append(DUP);
il.append(DUP);
il.append(new INVOKESPECIAL(
cpg.addMethodref(STRING_WRITER, "", "()V")));
// Load ToXMLStream
il.append(methodGen.loadHandler());
il.append(new INVOKESPECIAL(
cpg.addMethodref(STREAM_XML_OUTPUT, "",
"()V")));
// Invoke output.setWriter(STRING_WRITER)
il.append(methodGen.loadHandler());
il.append(SWAP);
il.append(new INVOKEVIRTUAL(
cpg.addMethodref(OUTPUT_BASE, "setWriter",
"("+WRITER_SIG+")V")));
// Invoke output.setEncoding("UTF-8")
il.append(methodGen.loadHandler());
il.append(new PUSH(cpg, "UTF-8")); // other encodings?
il.append(new INVOKEVIRTUAL(
cpg.addMethodref(OUTPUT_BASE, "setEncoding",
"("+STRING_SIG+")V")));
// Invoke output.setOmitXMLDeclaration(true)
il.append(methodGen.loadHandler());
il.append(ICONST_1);
il.append(new INVOKEVIRTUAL(
cpg.addMethodref(OUTPUT_BASE, "setOmitXMLDeclaration",
"(Z)V")));
il.append(methodGen.loadHandler());
il.append(new INVOKEVIRTUAL(
cpg.addMethodref(OUTPUT_BASE, "startDocument",
"()V")));
// Inline translation of contents
translateContents(classGen, methodGen);
il.append(methodGen.loadHandler());
il.append(new INVOKEVIRTUAL(
cpg.addMethodref(OUTPUT_BASE, "endDocument",
"()V")));
// Call toString() on StringWriter
il.append(new INVOKEVIRTUAL(
cpg.addMethodref(STRING_WRITER, "toString",
"()" + STRING_SIG)));
// Restore old output handler
il.append(SWAP);
il.append(methodGen.storeHandler());
break;
}
// Send the resulting string to the message handling method
il.append(new INVOKEVIRTUAL(cpg.addMethodref(TRANSLET_CLASS,
"displayMessage",
"("+STRING_SIG+")V")));
// If 'terminate' attribute is set to 'yes': Instanciate a
// RunTimeException, but it on the stack and throw an exception
if (_terminate == true) {
// Create a new instance of RunTimeException
final int einit = cpg.addMethodref("java.lang.RuntimeException",
"",
"(Ljava/lang/String;)V");
il.append(new NEW(cpg.addClass("java.lang.RuntimeException")));
il.append(DUP);
il.append(new PUSH(cpg,"Termination forced by an " +
"xsl:message instruction"));
il.append(new INVOKESPECIAL(einit));
il.append(ATHROW);
}
}
}