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1   /*
2    * reserved comment block
3    * DO NOT REMOVE OR ALTER!
4    */
5   /*
6    * Copyright 2001-2004 The Apache Software Foundation.
7    *
8    * Licensed under the Apache License, Version 2.0 (the "License");
9    * you may not use this file except in compliance with the License.
10   * You may obtain a copy of the License at
11   *
12   *     http://www.apache.org/licenses/LICENSE-2.0
13   *
14   * Unless required by applicable law or agreed to in writing, software
15   * distributed under the License is distributed on an "AS IS" BASIS,
16   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
17   * See the License for the specific language governing permissions and
18   * limitations under the License.
19   */
20  /*
21   * $Id: BooleanCall.java,v 1.2.4.1 2005/09/01 11:43:50 pvedula Exp $
22   */
23  
24  package com.sun.org.apache.xalan.internal.xsltc.compiler;
25  
26  import java.util.Vector;
27  
28  import com.sun.org.apache.xalan.internal.xsltc.compiler.util.ClassGenerator;
29  import com.sun.org.apache.xalan.internal.xsltc.compiler.util.MethodGenerator;
30  import com.sun.org.apache.xalan.internal.xsltc.compiler.util.Type;
31  import com.sun.org.apache.xalan.internal.xsltc.compiler.util.TypeCheckError;
32  
33  /**
34   * @author Jacek Ambroziak
35   * @author Santiago Pericas-Geertsen
36   */
37  final class BooleanCall extends FunctionCall {
38  
39      private Expression _arg = null;
40  
41      public BooleanCall(QName fname, Vector arguments) {
42          super(fname, arguments);
43          _arg = argument(0);
44      }
45  
46      public Type typeCheck(SymbolTable stable) throws TypeCheckError {
47          _arg.typeCheck(stable);
48          return _type = Type.Boolean;
49      }
50  
51      public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
52          _arg.translate(classGen, methodGen);
53          final Type targ = _arg.getType();
54          if (!targ.identicalTo(Type.Boolean)) {
55              _arg.startIterator(classGen, methodGen);
56              targ.translateTo(classGen, methodGen, Type.Boolean);
57          }
58      }
59  }