001: /*
002: * Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
003: *
004: * This file is part of Resin(R) Open Source
005: *
006: * Each copy or derived work must preserve the copyright notice and this
007: * notice unmodified.
008: *
009: * Resin Open Source is free software; you can redistribute it and/or modify
010: * it under the terms of the GNU General Public License as published by
011: * the Free Software Foundation; either version 2 of the License, or
012: * (at your option) any later version.
013: *
014: * Resin Open Source is distributed in the hope that it will be useful,
015: * but WITHOUT ANY WARRANTY; without even the implied warranty of
016: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
017: * of NON-INFRINGEMENT. See the GNU General Public License for more
018: * details.
019: *
020: * You should have received a copy of the GNU General Public License
021: * along with Resin Open Source; if not, write to the
022: *
023: * Free Software Foundation, Inc.
024: * 59 Temple Place, Suite 330
025: * Boston, MA 02111-1307 USA
026: *
027: * @author Scott Ferguson
028: */
029:
030: package com.caucho.quercus.env;
031:
032: abstract public class ValueType {
033: public boolean isBoolean() {
034: return false;
035: }
036:
037: public boolean isLong() {
038: return false;
039: }
040:
041: public boolean isLongCmp() {
042: return false;
043: }
044:
045: public boolean isLongAdd() {
046: return false;
047: }
048:
049: public boolean isDouble() {
050: return false;
051: }
052:
053: public boolean isNumber() {
054: return false;
055: }
056:
057: public boolean isNumberCmp() {
058: return false;
059: }
060:
061: public boolean isNumberAdd() {
062: return false;
063: }
064:
065: public final boolean isDoubleCmp() {
066: return isNumberCmp() && !isLongCmp();
067: }
068:
069: public static final ValueType NULL = new ValueType() {
070: public String toString() {
071: return "ValueType[NULL]";
072: }
073: };
074:
075: public static final ValueType BOOLEAN = new ValueType() {
076: public boolean isBoolean() {
077: return true;
078: }
079:
080: public String toString() {
081: return "ValueType[NULL]";
082: }
083: };
084:
085: public static final ValueType LONG = new ValueType() {
086: public boolean isLong() {
087: return true;
088: }
089:
090: public boolean isLongCmp() {
091: return true;
092: }
093:
094: public boolean isLongAdd() {
095: return true;
096: }
097:
098: public boolean isNumber() {
099: return true;
100: }
101:
102: public boolean isNumberCmp() {
103: return true;
104: }
105:
106: public boolean isNumberAdd() {
107: return true;
108: }
109:
110: public String toString() {
111: return "ValueType[NULL]";
112: }
113: };
114:
115: public static final ValueType LONG_EQ = new ValueType() {
116: public boolean isLongCmp() {
117: return true;
118: }
119:
120: public boolean isLongAdd() {
121: return true;
122: }
123:
124: public boolean isNumberCmp() {
125: return true;
126: }
127:
128: public boolean isNumberAdd() {
129: return true;
130: }
131:
132: public String toString() {
133: return "ValueType[LONG_EQ]";
134: }
135: };
136:
137: public static final ValueType LONG_ADD = new ValueType() {
138: public boolean isLongAdd() {
139: return true;
140: }
141:
142: public boolean isNumberAdd() {
143: return true;
144: }
145:
146: public String toString() {
147: return "ValueType[LONG_ADD]";
148: }
149: };
150:
151: public static final ValueType DOUBLE = new ValueType() {
152: public boolean isDouble() {
153: return true;
154: }
155:
156: public boolean isNumber() {
157: return true;
158: }
159:
160: public boolean isNumberCmp() {
161: return true;
162: }
163:
164: public boolean isNumberAdd() {
165: return true;
166: }
167:
168: public String toString() {
169: return "ValueType[DOUBLE]";
170: }
171: };
172:
173: public static final ValueType DOUBLE_CMP = new ValueType() {
174: public boolean isNumberCmp() {
175: return true;
176: }
177:
178: public boolean isNumberAdd() {
179: return true;
180: }
181:
182: public String toString() {
183: return "ValueType[DOUBLE_CMP]";
184: }
185: };
186:
187: public static final ValueType STRING = new ValueType() {
188:
189: public String toString() {
190: return "ValueType[STRING]";
191: }
192: };
193:
194: public static final ValueType ARRAY = new ValueType() {
195:
196: public String toString() {
197: return "ValueType[ARRAY]";
198: }
199: };
200:
201: public static final ValueType OBJECT = new ValueType() {
202:
203: public String toString() {
204: return "ValueType[OBJECT]";
205: }
206: };
207:
208: public static final ValueType VALUE = new ValueType() {
209:
210: public String toString() {
211: return "ValueType[VALUE]";
212: }
213: };
214: }
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