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: /**
24: * SRStmt represents the swizzle of a range of elements in an array.
25: */
26: public class SRStmt extends Stmt {
27: Expr array;
28:
29: Expr start; // starting value of range
30:
31: Expr end; // terminating value of range
32:
33: /**
34: * Constructor.
35: *
36: * @param a
37: * The array to swizzle.
38: * @param s
39: * The starting value of the swizzle range.
40: * @param t
41: * The terminating value of the swizzle range.
42: */
43: public SRStmt(final Expr a, final Expr s, final Expr t) {
44: this .array = a;
45: this .start = s;
46: this .end = t;
47: array.setParent(this );
48: start.setParent(this );
49: end.setParent(this );
50: }
51:
52: public Expr array() {
53: return array;
54: }
55:
56: public Expr start() {
57: return start;
58: }
59:
60: public Expr end() {
61: return end;
62: }
63:
64: public void visit(final TreeVisitor visitor) {
65: visitor.visitSRStmt(this );
66: }
67:
68: public Object clone() {
69: return copyInto(new SRStmt((Expr) array.clone(), (Expr) start
70: .clone(), (Expr) end.clone()));
71: }
72:
73: public void visitForceChildren(final TreeVisitor visitor) {
74: if (visitor.reverse()) {
75: end.visit(visitor);
76: start.visit(visitor);
77: array.visit(visitor);
78: } else {
79: array.visit(visitor);
80: start.visit(visitor);
81: end.visit(visitor);
82: }
83: }
84: }
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