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Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
Token.java | 100% | 100% | 100% | 100% |
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1 | // Copyright 2004, 2005 The Apache Software Foundation | |
2 | // | |
3 | // Licensed under the Apache License, Version 2.0 (the "License"); | |
4 | // you may not use this file except in compliance with the License. | |
5 | // You may obtain a copy of the License at | |
6 | // | |
7 | // http://www.apache.org/licenses/LICENSE-2.0 | |
8 | // | |
9 | // Unless required by applicable law or agreed to in writing, software | |
10 | // distributed under the License is distributed on an "AS IS" BASIS, | |
11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
12 | // See the License for the specific language governing permissions and | |
13 | // limitations under the License. | |
14 | ||
15 | package org.apache.hivemind.conditional; | |
16 | ||
17 | import org.apache.hivemind.util.Defense; | |
18 | ||
19 | /** | |
20 | * A token recognized from a conditional expression. | |
21 | * | |
22 | * @author Howard M. Lewis Ship | |
23 | * @since 1.1 | |
24 | */ | |
25 | class Token | |
26 | { | |
27 | private TokenType _type; | |
28 | ||
29 | private String _value; | |
30 | ||
31 | 8 | Token(TokenType type) |
32 | { | |
33 | 8 | this(type, null); |
34 | } | |
35 | ||
36 | /** | |
37 | * @param type | |
38 | * a specific token type (may not be null) | |
39 | * @param value | |
40 | * the value for this token | |
41 | */ | |
42 | ||
43 | 24 | Token(TokenType type, String value) |
44 | { | |
45 | 24 | Defense.notNull(type, "type"); |
46 | ||
47 | 24 | _type = type; |
48 | 24 | _value = value; |
49 | } | |
50 | ||
51 | 95 | public TokenType getType() |
52 | { | |
53 | 95 | return _type; |
54 | } | |
55 | ||
56 | /** | |
57 | * Returns the specific value for this token, generally only meaningful for the | |
58 | * {@link org.apache.hivemind.conditional.TokenType#SYMBOL} type. | |
59 | */ | |
60 | ||
61 | 14 | public String getValue() |
62 | { | |
63 | 14 | return _value; |
64 | } | |
65 | ||
66 | /** | |
67 | * Returns either <TYPE> or <TYPE(VALUE)>, where TYPE is the TokenType and VALUE is | |
68 | * the value (if non null). | |
69 | */ | |
70 | ||
71 | 5 | public String toString() |
72 | { | |
73 | 5 | StringBuffer buffer = new StringBuffer("<"); |
74 | ||
75 | 5 | buffer.append(_type); |
76 | ||
77 | 5 | if (_value != null) |
78 | { | |
79 | 2 | buffer.append("("); |
80 | 2 | buffer.append(_value); |
81 | 2 | buffer.append(")"); |
82 | } | |
83 | ||
84 | 5 | buffer.append(">"); |
85 | ||
86 | 5 | return buffer.toString(); |
87 | } | |
88 | } |
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