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Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
LetToken.java | 75% | 92.3% | 100% | 89.5% |
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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.tapestry.script; | |
16 | ||
17 | import java.util.Map; | |
18 | ||
19 | import org.apache.hivemind.Location; | |
20 | ||
21 | /** | |
22 | * Allows for the creation of new symbols that can be used in the script | |
23 | * or returned to the caller. | |
24 | * | |
25 | * <p>The <let> tag wraps around static text and <insert> | |
26 | * elements. The results are trimmed. | |
27 | * | |
28 | * @author Howard Lewis Ship | |
29 | * @since 0.2.9 | |
30 | * | |
31 | **/ | |
32 | ||
33 | class LetToken extends AbstractToken | |
34 | { | |
35 | private String _key; | |
36 | private boolean _unique; | |
37 | private int _bufferLengthHighwater = 20; | |
38 | ||
39 | 22 | public LetToken(String key, boolean unique, Location location) |
40 | { | |
41 | 22 | super(location); |
42 | ||
43 | 22 | _key = key; |
44 | 22 | _unique = unique; |
45 | } | |
46 | ||
47 | 22 | public void write(StringBuffer buffer, ScriptSession session) |
48 | { | |
49 | 22 | if (buffer != null) |
50 | 0 | throw new IllegalArgumentException(); |
51 | ||
52 | 22 | buffer = new StringBuffer(_bufferLengthHighwater); |
53 | ||
54 | 22 | writeChildren(buffer, session); |
55 | ||
56 | // Store the symbol back into the root set of symbols. | |
57 | ||
58 | 22 | Map symbols = session.getSymbols(); |
59 | ||
60 | 22 | String value = buffer.toString().trim(); |
61 | ||
62 | 22 | if (_unique) |
63 | 6 | value = session.getUniqueString(value); |
64 | ||
65 | 22 | symbols.put(_key, value); |
66 | ||
67 | // Store the buffer length from this run for the next run, since its | |
68 | // going to be approximately the right size. | |
69 | ||
70 | 22 | _bufferLengthHighwater = Math.max(_bufferLengthHighwater, buffer.length()); |
71 | } | |
72 | } |
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