01: /*
02: * Copyright (c) 1998-2007 Caucho Technology -- all rights reserved
03: *
04: * This file is part of Resin(R) Open Source
05: *
06: * Each copy or derived work must preserve the copyright notice and this
07: * notice unmodified.
08: *
09: * Resin Open Source is free software; you can redistribute it and/or modify
10: * it under the terms of the GNU General Public License as published by
11: * the Free Software Foundation; either version 2 of the License, or
12: * (at your option) any later version.
13: *
14: * Resin Open Source is distributed in the hope that it will be useful,
15: * but WITHOUT ANY WARRANTY; without even the implied warranty of
16: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
17: * of NON-INFRINGEMENT. See the GNU General Public License for more
18: * details.
19: *
20: * You should have received a copy of the GNU General Public License
21: * along with Resin Open Source; if not, write to the
22: *
23: * Free Software Foundation, Inc.
24: * 59 Temple Place, Suite 330
25: * Boston, MA 02111-1307 USA
26: *
27: * @author Sam
28: */
29:
30: package com.caucho.quercus.lib.spl;
31:
32: import com.caucho.quercus.env.*;
33:
34: /**
35: * A delegate that intercepts array acces methods on the
36: * target objects that implement
37: * the {@link com.caucho.quercus.lib.spl.ArrayAccess} interface.
38: */
39: public class ArrayAccessDelegate implements ArrayDelegate {
40: private static final StringValue OFFSET_GET = new StringBuilderValue(
41: "offsetGet");
42: private static final StringValue OFFSET_SET = new StringBuilderValue(
43: "offsetSet");
44: private static final StringValue OFFSET_UNSET = new StringBuilderValue(
45: "offsetUnset");
46: private static final StringValue OFFSET_EXISTS = new StringBuilderValue(
47: "offsetExists");
48:
49: public Value get(ObjectValue qThis, Value index) {
50: Env env = Env.getInstance();
51:
52: return qThis.callMethod(env, OFFSET_GET, index);
53: }
54:
55: public Value put(ObjectValue qThis, Value index, Value value) {
56: Env env = Env.getInstance();
57:
58: return qThis.callMethod(env, OFFSET_SET, index, value);
59: }
60:
61: public Value put(ObjectValue qThis, Value index) {
62: Env env = Env.getInstance();
63:
64: return qThis.callMethod(env, OFFSET_SET, UnsetValue.UNSET,
65: index);
66: }
67:
68: public boolean isset(ObjectValue qThis, Value index) {
69: Env env = Env.getInstance();
70:
71: return qThis.callMethod(env, OFFSET_EXISTS, index).toBoolean();
72: }
73:
74: public Value unset(ObjectValue qThis, Value index) {
75: Env env = Env.getInstance();
76:
77: return qThis.callMethod(env, OFFSET_UNSET, index);
78: }
79: }
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