01: /* Copyright (C) 2004 - 2007 db4objects Inc. http://www.db4o.com
02:
03: This file is part of the db4o open source object database.
04:
05: db4o is free software; you can redistribute it and/or modify it under
06: the terms of version 2 of the GNU General Public License as published
07: by the Free Software Foundation and as clarified by db4objects' GPL
08: interpretation policy, available at
09: http://www.db4o.com/about/company/legalpolicies/gplinterpretation/
10: Alternatively you can write to db4objects, Inc., 1900 S Norfolk Street,
11: Suite 350, San Mateo, CA 94403, USA.
12:
13: db4o is distributed in the hope that it will be useful, but WITHOUT ANY
14: WARRANTY; without even the implied warranty of MERCHANTABILITY or
15: FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16: for more details.
17:
18: You should have received a copy of the GNU General Public License along
19: with this program; if not, write to the Free Software Foundation, Inc.,
20: 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
21: package EDU.purdue.cs.bloat.tree;
22:
23: import EDU.purdue.cs.bloat.editor.*;
24:
25: /**
26: * StaticFieldExpr represents the <tt>getstatic</tt> opcode which gets a
27: * static (class) field from a class.
28: */
29: public class StaticFieldExpr extends MemRefExpr {
30: // getstatic
31:
32: MemberRef field;
33:
34: /**
35: * Constructor.
36: *
37: * @param field
38: * The field to access.
39: * @param type
40: * The type of this expression.
41: */
42: public StaticFieldExpr(final MemberRef field, final Type type) {
43: super (type);
44: this .field = field;
45: }
46:
47: public MemberRef field() {
48: return field;
49: }
50:
51: public void visitForceChildren(final TreeVisitor visitor) {
52: }
53:
54: public void visit(final TreeVisitor visitor) {
55: visitor.visitStaticFieldExpr(this );
56: }
57:
58: public int exprHashCode() {
59: return 21 + field.hashCode() ^ type.simple().hashCode();
60: }
61:
62: public boolean equalsExpr(final Expr other) {
63: return (other != null) && (other instanceof StaticFieldExpr)
64: && ((StaticFieldExpr) other).field.equals(field);
65: }
66:
67: public Object clone() {
68: return copyInto(new StaticFieldExpr(field, type));
69: }
70: }
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