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org.apache.commons.jexl.parser.ASTReference |
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1 | /* |
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2 | * Copyright 2002,2004 The Apache Software Foundation. |
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3 | * |
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4 | * Licensed under the Apache License, Version 2.0 (the "License"); |
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5 | * you may not use this file except in compliance with the License. |
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6 | * You may obtain a copy of the License at |
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7 | * |
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8 | * http://www.apache.org/licenses/LICENSE-2.0 |
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9 | * |
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10 | * Unless required by applicable law or agreed to in writing, software |
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11 | * distributed under the License is distributed on an "AS IS" BASIS, |
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12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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13 | * See the License for the specific language governing permissions and |
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14 | * limitations under the License. |
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15 | */ |
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16 | package org.apache.commons.jexl.parser; |
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17 | ||
18 | import org.apache.commons.jexl.JexlContext; |
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19 | ||
20 | /** |
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21 | * reference - any variable expression |
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22 | * |
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23 | * @author <a href="mailto:geirm@apache.org">Geir Magnusson Jr.</a> |
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24 | * @version $Id: ASTReference.java,v 1.3 2004/02/28 13:45:20 yoavs Exp $ |
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25 | */ |
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26 | public class ASTReference extends SimpleNode |
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27 | { |
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28 | SimpleNode root; |
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29 | ||
30 | public ASTReference(int id) |
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31 | { |
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32 | 0 | super(id); |
33 | 0 | } |
34 | ||
35 | public ASTReference(Parser p, int id) |
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36 | { |
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37 | 1737 | super(p, id); |
38 | 1737 | } |
39 | ||
40 | ||
41 | /** Accept the visitor. **/ |
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42 | public Object jjtAccept(ParserVisitor visitor, Object data) |
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43 | { |
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44 | 0 | return visitor.visit(this, data); |
45 | } |
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46 | ||
47 | public Object value(JexlContext jc) |
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48 | throws Exception |
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49 | { |
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50 | 1656 | return execute(null,jc); |
51 | } |
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52 | ||
53 | public void jjtClose() |
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54 | { |
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55 | 1728 | root = (SimpleNode) jjtGetChild(0); |
56 | 1728 | } |
57 | ||
58 | public Object execute(Object obj, JexlContext jc) |
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59 | throws Exception |
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60 | { |
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61 | 1656 | Object o = root.value(jc); |
62 | ||
63 | /* |
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64 | * ignore the first child - it's our identifier |
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65 | */ |
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66 | 2187 | for(int i=1; i<jjtGetNumChildren(); i++) |
67 | { |
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68 | 567 | o = ( (SimpleNode) jjtGetChild(i)).execute(o,jc); |
69 | ||
70 | 558 | if(o==null) |
71 | 27 | return null; |
72 | } |
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73 | ||
74 | 1620 | return o; |
75 | } |
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76 | ||
77 | public String getRootString() |
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78 | throws Exception |
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79 | { |
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80 | 0 | if ( root instanceof ASTIdentclass="keyword">ifier) |
81 | 0 | return ((ASTIdentifier) root).getIdentifierString(); |
82 | ||
83 | 0 | if (root instanceof ASTArrayAccess) |
84 | 0 | return ((ASTArrayAccess) root).getIdentifierString(); |
85 | ||
86 | 0 | throw new Exception("programmer error : ASTReference : root not known" |
87 | + root ); |
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88 | } |
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89 | } |
This report is generated by jcoverage, Maven and Maven JCoverage Plugin. |