01: // This file is part of KeY - Integrated Deductive Software Design
02: // Copyright (C) 2001-2007 Universitaet Karlsruhe, Germany
03: // Universitaet Koblenz-Landau, Germany
04: // Chalmers University of Technology, Sweden
05: //
06: // The KeY system is protected by the GNU General Public License.
07: // See LICENSE.TXT for details.
08: //
09: //
10:
11: package de.uka.ilkd.key.java.expression.operator;
12:
13: import de.uka.ilkd.key.java.PrettyPrinter;
14: import de.uka.ilkd.key.java.expression.Assignment;
15: import de.uka.ilkd.key.java.visitor.Visitor;
16: import de.uka.ilkd.key.util.ExtList;
17:
18: /**
19: * Addition or string concatenation assignment "+=".
20: */
21:
22: public class PlusAssignment extends Assignment {
23:
24: /**
25: * Plus assignment.
26: * @param children an ExtList with all children of this node
27: * the first children in list will be the one on the left
28: * side, the second the one on the right side.
29: */
30:
31: public PlusAssignment(ExtList children) {
32: super (children);
33: }
34:
35: /**
36: * Get arity.
37: * @return the int value.
38: */
39:
40: public int getArity() {
41: return 2;
42: }
43:
44: /**
45: * Get precedence.
46: * @return the int value.
47: */
48:
49: public int getPrecedence() {
50: return 13;
51: }
52:
53: /**
54: * Get notation.
55: * @return the int value.
56: */
57:
58: public int getNotation() {
59: return INFIX;
60: }
61:
62: /** calls the corresponding method of a visitor in order to
63: * perform some action/transformation on this element
64: * @param v the Visitor
65: */
66: public void visit(Visitor v) {
67: v.performActionOnPlusAssignment(this );
68: }
69:
70: public void prettyPrint(PrettyPrinter p) throws java.io.IOException {
71: p.printPlusAssignment(this);
72: }
73: }
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