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Java > Open Source Codes > org > apache > xalan > xsltc > compiler > Instruction


1 /*
2  * Copyright 2001-2004 The Apache Software Foundation.
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  * http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 /*
17  * $Id: Instruction.java,v 1.5 2004/02/16 22:24:29 minchau Exp $
18  */
19
20 package org.apache.xalan.xsltc.compiler;
21
22 import org.apache.xalan.xsltc.compiler.util.ClassGenerator;
23 import org.apache.xalan.xsltc.compiler.util.ErrorMsg;
24 import org.apache.xalan.xsltc.compiler.util.MethodGenerator;
25 import org.apache.xalan.xsltc.compiler.util.Type;
26 import org.apache.xalan.xsltc.compiler.util.TypeCheckError;
27
28 /**
29  * @author Jacek Ambroziak
30  * @author Santiago Pericas-Geertsen
31  */
32 abstract class Instruction extends SyntaxTreeNode {
33     /**
34      * Type check all the children of this node.
35      */
36     public Type typeCheck(SymbolTable stable) throws TypeCheckError {
37     return typeCheckContents(stable);
38     }
39
40     /**
41      * Translate this node into JVM bytecodes.
42      */
43     public void translate(ClassGenerator classGen, MethodGenerator methodGen) {
44     ErrorMsg msg = new ErrorMsg(ErrorMsg.NOT_IMPLEMENTED_ERR,
45                     getClass(), this);
46     getParser().reportError(FATAL, msg);
47     }
48 }
49
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