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30 day Evaluation License registered to hlship@comcast.net Your 30 day evaluation period has expired. Please visit http://www.cenqua.com to obtain a licensed version of Clover | |||||||||||||||||||
Source file | Conditionals | Statements | Methods | TOTAL | |||||||||||||||
AbstractToken.java | 100% | 94.4% | 100% | 96.7% |
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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.ArrayList; | |
18 | import java.util.Iterator; | |
19 | import java.util.List; | |
20 | ||
21 | import org.apache.hivemind.ApplicationRuntimeException; | |
22 | import org.apache.hivemind.Location; | |
23 | import org.apache.tapestry.services.ExpressionEvaluator; | |
24 | ||
25 | /** | |
26 | * Base class for creating tokens which may contain other tokens. | |
27 | * | |
28 | * @author Howard Lewis Ship | |
29 | * @since 0.2.9 | |
30 | */ | |
31 | ||
32 | abstract class AbstractToken implements IScriptToken | |
33 | { | |
34 | private List _tokens; | |
35 | ||
36 | private Location _location; | |
37 | ||
38 | 83 | protected AbstractToken(Location location) |
39 | { | |
40 | 83 | _location = location; |
41 | } | |
42 | ||
43 | 6 | public Location getLocation() |
44 | { | |
45 | 6 | return _location; |
46 | } | |
47 | ||
48 | 65 | public void addToken(IScriptToken token) |
49 | { | |
50 | 65 | if (_tokens == null) |
51 | 36 | _tokens = new ArrayList(); |
52 | ||
53 | 65 | _tokens.add(token); |
54 | } | |
55 | ||
56 | /** | |
57 | * Invokes {@link IScriptToken#write(StringBuffer,ScriptSession)}on each child token (if there | |
58 | * are any). | |
59 | */ | |
60 | ||
61 | 39 | protected void writeChildren(StringBuffer buffer, ScriptSession session) |
62 | { | |
63 | 39 | if (_tokens == null) |
64 | 1 | return; |
65 | ||
66 | 38 | Iterator i = _tokens.iterator(); |
67 | ||
68 | 38 | while (i.hasNext()) |
69 | { | |
70 | 73 | IScriptToken token = (IScriptToken) i.next(); |
71 | ||
72 | 73 | token.write(buffer, session); |
73 | } | |
74 | } | |
75 | ||
76 | /** | |
77 | * Evaluates the expression against the session's symbols, using | |
78 | * {@link ExpressionEvaluator#read(Object, String)}and returns the result. | |
79 | */ | |
80 | 6 | protected Object evaluate(String expression, ScriptSession session) |
81 | { | |
82 | ||
83 | 6 | try |
84 | { | |
85 | 6 | return session.evaluate(expression); |
86 | } | |
87 | catch (Exception ex) | |
88 | { | |
89 | 0 | throw new ApplicationRuntimeException(ex.getMessage(), _location, ex); |
90 | } | |
91 | } | |
92 | ||
93 | /** | |
94 | * Evaluates an expression and coerces the result to a boolean. | |
95 | * | |
96 | * @since 4.0 | |
97 | */ | |
98 | ||
99 | 4 | protected boolean evaluateBoolean(String expression, ScriptSession session) |
100 | { | |
101 | 4 | try |
102 | { | |
103 | 4 | Boolean b = (Boolean) session.evaluate(expression, Boolean.class); |
104 | ||
105 | 3 | return b.booleanValue(); |
106 | } | |
107 | catch (Exception ex) | |
108 | { | |
109 | 1 | throw new ApplicationRuntimeException(ex.getMessage(), _location, ex); |
110 | } | |
111 | } | |
112 | } |
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