001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one
003     * or more contributor license agreements. See the NOTICE file
004     * distributed with this work for additional information
005     * regarding copyright ownership. The ASF licenses this file
006     * to you under the Apache License, Version 2.0 (the  "License");
007     * you may not use this file except in compliance with the License.
008     * You may obtain a copy of the License at
009     *
010     *     http://www.apache.org/licenses/LICENSE-2.0
011     *
012     * Unless required by applicable law or agreed to in writing, software
013     * distributed under the License is distributed on an "AS IS" BASIS,
014     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
015     * See the License for the specific language governing permissions and
016     * limitations under the License.
017     */
018    /*
019     * $Id: GenerateIdCall.java 468650 2006-10-28 07:03:30Z minchau $
020     */
021    
022    package org.apache.xalan.xsltc.compiler;
023    
024    import java.util.Vector;
025    
026    import org.apache.bcel.generic.ConstantPoolGen;
027    import org.apache.bcel.generic.INVOKESTATIC;
028    import org.apache.bcel.generic.InstructionList;
029    import org.apache.xalan.xsltc.compiler.util.ClassGenerator;
030    import org.apache.xalan.xsltc.compiler.util.MethodGenerator;
031    
032    /**
033     * @author Jacek Ambroziak
034     * @author Santiago Pericas-Geertsen
035     */
036    final class GenerateIdCall extends FunctionCall {
037        public GenerateIdCall(QName fname, Vector arguments) {
038            super(fname, arguments);
039        }
040    
041        public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
042            final InstructionList il = methodGen.getInstructionList();
043            if (argumentCount() == 0) {
044               il.append(methodGen.loadContextNode());
045            }
046            else {                  // one argument
047                argument().translate(classGen, methodGen);
048            }
049            final ConstantPoolGen cpg = classGen.getConstantPool();
050            il.append(new INVOKESTATIC(cpg.addMethodref(BASIS_LIBRARY_CLASS,
051                                                        "generate_idF",
052                                                        // reuse signature
053                                                        GET_NODE_NAME_SIG)));
054        }
055    }