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Java > Open Source Codes > org > apache > bcel > generic > NEW


1 /*
2  * Copyright 2000-2004 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 package org.apache.bcel.generic;
18
19 import org.apache.bcel.ExceptionConstants;
20
21 /**
22  * NEW - Create new object
23  * <PRE>Stack: ... -&gt; ..., objectref</PRE>
24  *
25  * @version $Id: NEW.java 386056 2006-03-15 11:31:56Z tcurdt $
26  * @author <A HREF="mailto:m.dahm@gmx.de">M. Dahm</A>
27  */
28 public class NEW extends CPInstruction implements LoadClass, AllocationInstruction,
29         ExceptionThrower, StackProducer {
30
31     /**
32      * Empty constructor needed for the Class.newInstance() statement in
33      * Instruction.readInstruction(). Not to be used otherwise.
34      */
35     NEW() {
36     }
37
38
39     public NEW(int index) {
40         super(org.apache.bcel.Constants.NEW, index);
41     }
42
43
44     public Class JavaDoc[] getExceptions() {
45         Class JavaDoc[] cs = new Class JavaDoc[2 + ExceptionConstants.EXCS_CLASS_AND_INTERFACE_RESOLUTION.length];
46         System.arraycopy(ExceptionConstants.EXCS_CLASS_AND_INTERFACE_RESOLUTION, 0, cs, 0,
47                 ExceptionConstants.EXCS_CLASS_AND_INTERFACE_RESOLUTION.length);
48         cs[ExceptionConstants.EXCS_CLASS_AND_INTERFACE_RESOLUTION.length + 1] = ExceptionConstants.INSTANTIATION_ERROR;
49         cs[ExceptionConstants.EXCS_CLASS_AND_INTERFACE_RESOLUTION.length] = ExceptionConstants.ILLEGAL_ACCESS_ERROR;
50         return cs;
51     }
52
53
54     public ObjectType getLoadClassType( ConstantPoolGen cpg ) {
55         return (ObjectType) getType(cpg);
56     }
57
58
59     /**
60      * Call corresponding visitor method(s). The order is:
61      * Call visitor methods of implemented interfaces first, then
62      * call methods according to the class hierarchy in descending order,
63      * i.e., the most specific visitXXX() call comes last.
64      *
65      * @param v Visitor object
66      */
67     public void accept( Visitor v ) {
68         v.visitLoadClass(this);
69         v.visitAllocationInstruction(this);
70         v.visitExceptionThrower(this);
71         v.visitStackProducer(this);
72         v.visitTypedInstruction(this);
73         v.visitCPInstruction(this);
74         v.visitNEW(this);
75     }
76 }
77
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