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org.apache.commons.jexl.parser.ASTBlock |
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1 | /* |
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2 | * Copyright 2002-2006 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 | ||
17 | package org.apache.commons.jexl.parser; |
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18 | ||
19 | import org.apache.commons.jexl.JexlContext; |
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20 | ||
21 | /** |
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22 | * { code }, a block of statements enclosed in curly braces. |
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23 | * |
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24 | * @author Dion Gillard |
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25 | * |
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26 | */ |
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27 | public class ASTBlock extends SimpleNode { |
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28 | /** |
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29 | * Create the node given an id. |
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30 | * |
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31 | * @param id node id. |
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32 | */ |
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33 | public ASTBlock(int id) { |
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34 | 0 | super(id); |
35 | 0 | } |
36 | ||
37 | /** |
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38 | * Create a node with the given parser and id. |
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39 | * |
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40 | * @param p a parser. |
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41 | * @param id node id. |
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42 | */ |
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43 | public ASTBlock(Parser p, int id) { |
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44 | 16 | super(p, id); |
45 | 16 | } |
46 | ||
47 | /** {@inheritDoc} */ |
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48 | public Object jjtAccept(ParserVisitor visitor, Object data) { |
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49 | 0 | return visitor.visit(this, data); |
50 | } |
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51 | ||
52 | /** |
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53 | * @return the value of the block. Execute all statements inside and return |
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54 | * the value of the last. |
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55 | * @param context the {@link JexlContext} to execute against. |
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56 | * @throws Exception on any error. |
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57 | */ |
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58 | public Object value(JexlContext context) throws Exception { |
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59 | 21 | int numChildren = jjtGetNumChildren(); |
60 | 21 | Object result = null; |
61 | 54 | for (int i = 0; i < numChildren; i++) { |
62 | 33 | result = ((SimpleNode) jjtGetChild(i)).value(context); |
63 | } |
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64 | 21 | return result; |
65 | } |
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66 | ||
67 | } |
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