01: /*
02: * Copyright (c) 1998-2008 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 Scott Ferguson
28: */
29:
30: package com.caucho.quercus.function;
31:
32: import com.caucho.quercus.env.Env;
33: import com.caucho.quercus.env.LongValue;
34: import com.caucho.quercus.env.Value;
35: import com.caucho.quercus.expr.Expr;
36:
37: public class ByteMarshal extends Marshal {
38: public static final Marshal MARSHAL = new ByteMarshal();
39:
40: public boolean isLong() {
41: return true;
42: }
43:
44: public boolean isReadOnly() {
45: return true;
46: }
47:
48: public Object marshal(Env env, Expr expr, Class expectedClass) {
49: return new Byte((byte) expr.evalLong(env));
50: }
51:
52: public Object marshal(Env env, Value value, Class expectedClass) {
53: return new Byte((byte) value.toLong());
54: }
55:
56: public Value unmarshal(Env env, Object value) {
57: if (value == null)
58: return LongValue.ZERO;
59: else
60: return new LongValue(((Number) value).longValue());
61: }
62:
63: @Override
64: protected int getMarshalingCostImpl(Value argValue) {
65: if (argValue.isLongConvertible())
66: return LONG_CONVERTIBLE_BYTE_COST;
67: else if (argValue.isDoubleConvertible())
68: return DOUBLE_CONVERTIBLE_BYTE_COST;
69: else
70: return Marshal.DUBIOUS;
71: }
72:
73: @Override
74: public Class getExpectedClass() {
75: return byte.class;
76: }
77: }
|