| /* |
| * @(#)$Id$ |
| * |
| * 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 Morten Jorgensen |
| * |
| */ |
| |
| package org.apache.xalan.xsltc.compiler; |
| |
| import java.util.Vector; |
| import java.util.Iterator; |
| import java.util.Enumeration; |
| import java.util.StringTokenizer; |
| |
| import org.apache.xalan.xsltc.compiler.util.Type; |
| import org.apache.bcel.generic.*; |
| import org.apache.xalan.xsltc.compiler.util.*; |
| |
| final class UseAttributeSets extends Instruction { |
| |
| // Only error that can occur: |
| private final static String ATTR_SET_NOT_FOUND = |
| ""; |
| |
| // Contains the names of all references attribute sets |
| private final Vector _sets = new Vector(2); |
| |
| /** |
| * Constructur - define initial attribute sets to use |
| */ |
| public UseAttributeSets(String setNames, Parser parser) { |
| setParser(parser); |
| addAttributeSets(setNames); |
| } |
| |
| /** |
| * This method is made public to enable an AttributeSet object to merge |
| * itself with another AttributeSet (including any other AttributeSets |
| * the two may inherit from). |
| */ |
| public void addAttributeSets(String setNames) { |
| if ((setNames != null) && (!setNames.equals(Constants.EMPTYSTRING))) { |
| final StringTokenizer tokens = new StringTokenizer(setNames); |
| while (tokens.hasMoreTokens()) { |
| final QName qname = |
| getParser().getQNameIgnoreDefaultNs(tokens.nextToken()); |
| _sets.add(qname); |
| } |
| } |
| } |
| |
| /** |
| * Do nada. |
| */ |
| public Type typeCheck(SymbolTable stable) throws TypeCheckError { |
| return Type.Void; |
| } |
| |
| /** |
| * Generate a call to the method compiled for this attribute set |
| */ |
| public void translate(ClassGenerator classGen, MethodGenerator methodGen) { |
| |
| final ConstantPoolGen cpg = classGen.getConstantPool(); |
| final InstructionList il = methodGen.getInstructionList(); |
| final SymbolTable symbolTable = getParser().getSymbolTable(); |
| |
| // Go through each attribute set and generate a method call |
| for (int i=0; i<_sets.size(); i++) { |
| // Get the attribute set name |
| final QName name = (QName)_sets.elementAt(i); |
| // Get the AttributeSet reference from the symbol table |
| final AttributeSet attrs = symbolTable.lookupAttributeSet(name); |
| // Compile the call to the set's method if the set exists |
| if (attrs != null) { |
| final String methodName = attrs.getMethodName(); |
| il.append(classGen.loadTranslet()); |
| il.append(methodGen.loadHandler()); |
| il.append(methodGen.loadIterator()); |
| final int method = cpg.addMethodref(classGen.getClassName(), |
| methodName, ATTR_SET_SIG); |
| il.append(new INVOKESPECIAL(method)); |
| } |
| // Generate an error if the attribute set does not exist |
| else { |
| final Parser parser = getParser(); |
| final String atrs = name.toString(); |
| reportError(this, parser, ErrorMsg.ATTRIBSET_UNDEF_ERR, atrs); |
| } |
| } |
| } |
| } |