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Java > Open Source Codes > org > aspectj > compiler > base > ast > PlusOpExpr


1 /* -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
2  *
3  * This file is part of the compiler and core tools for the AspectJ(tm)
4  * programming language; see http://aspectj.org
5  *
6  * The contents of this file are subject to the Mozilla Public License
7  * Version 1.1 (the "License"); you may not use this file except in
8  * compliance with the License. You may obtain a copy of the License at
9  * either http://www.mozilla.org/MPL/ or http://aspectj.org/MPL/.
10  *
11  * Software distributed under the License is distributed on an "AS IS" basis,
12  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
13  * for the specific language governing rights and limitations under the
14  * License.
15  *
16  * The Original Code is AspectJ.
17  *
18  * The Initial Developer of the Original Code is Xerox Corporation. Portions
19  * created by Xerox Corporation are Copyright (C) 1999-2002 Xerox Corporation.
20  * All Rights Reserved.
21  *
22  * Contributor(s):
23  */
24
25 package org.aspectj.compiler.base.ast;
26
27 import org.aspectj.compiler.base.*;
28 import java.io.IOException JavaDoc;
29
30 import java.util.*;
31
32 import org.aspectj.compiler.base.bcg.CodeBuilder;
33 import org.aspectj.compiler.base.bcg.Label;
34
35 /**
36  * @grammar + rand1
37  *
38  */
39 public class PlusOpExpr extends UnopExpr {
40
41     protected LiteralExpr halfFold(Type type, LiteralExpr lit) {
42         return type.foldPlusOp(lit);
43     }
44
45     protected Type discoverType() {
46         Expr rand1 = getRand1();
47         Type ty1 = rand1.getType();
48
49         if (ty1 instanceof NumericType) {
50             return getTypeManager().unaryNumericPromotion(ty1);
51         } else {
52             showOperatorTypeError(ty1);
53             return getTypeManager().anyType;
54         }
55     }
56
57     protected Type getLiftType() {
58         return getType();
59     }
60
61     // ------------------------------
62 // bcg
63 protected void cgValue(CodeBuilder cb) {
64         Type liftType = getLiftType();
65         getRand1().cgValue(cb, liftType);
66     }
67
68     //BEGIN: Generated from @child and @property
69
70     public PlusOpExpr(SourceLocation location, String JavaDoc _op, Expr _rand1) {
71         super(location, _op, _rand1);
72
73     }
74     protected PlusOpExpr(SourceLocation source) {
75         super(source);
76     }
77
78     public ASTObject copyWalk(CopyWalker walker) {
79         PlusOpExpr ret = new PlusOpExpr(getSourceLocation());
80         ret.preCopy(walker, this);
81         ret.op = op;
82         if (rand1 != null) ret.setRand1( (Expr)walker.process(rand1) );
83         return ret;
84     }
85
86
87     public String JavaDoc getDefaultDisplayName() {
88         return "PlusOpExpr(op: "+op+")";
89     }
90
91     //END: Generated from @child and @property
92 }
93
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