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: BooleanCall.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.xalan.xsltc.compiler.util.ClassGenerator;
027    import org.apache.xalan.xsltc.compiler.util.MethodGenerator;
028    import org.apache.xalan.xsltc.compiler.util.Type;
029    import org.apache.xalan.xsltc.compiler.util.TypeCheckError;
030    
031    /**
032     * @author Jacek Ambroziak
033     * @author Santiago Pericas-Geertsen
034     */
035    final class BooleanCall extends FunctionCall {
036    
037        private Expression _arg = null;
038    
039        public BooleanCall(QName fname, Vector arguments) {
040            super(fname, arguments);
041            _arg = argument(0);
042        }
043    
044        public Type typeCheck(SymbolTable stable) throws TypeCheckError {
045            _arg.typeCheck(stable);
046            return _type = Type.Boolean;
047        }
048    
049        public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
050            _arg.translate(classGen, methodGen);
051            final Type targ = _arg.getType();
052            if (!targ.identicalTo(Type.Boolean)) {
053                _arg.startIterator(classGen, methodGen);
054                targ.translateTo(classGen, methodGen, Type.Boolean);
055            }
056        }
057    }