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| org.apache.commons.jexl.parser.ASTIfStatement |
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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 | import org.apache.commons.jexl.util.Coercion; |
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| 21 | ||
| 22 | /** |
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| 23 | * if ( expression ) statement [else statement]. |
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| 24 | * |
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| 25 | * @author Dion Gillard |
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| 26 | * @since 1.1 |
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| 27 | */ |
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| 28 | public class ASTIfStatement extends SimpleNode { |
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| 29 | /** child index of the else statement to execute. */ |
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| 30 | private static final int ELSE_STATEMENT_INDEX = 2; |
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| 31 | /** |
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| 32 | * Create the node given an id. |
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| 33 | * |
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| 34 | * @param id node id. |
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| 35 | */ |
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| 36 | public ASTIfStatement(int id) { |
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| 37 | 0 | super(id); |
| 38 | 0 | } |
| 39 | ||
| 40 | /** |
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| 41 | * Create a node with the given parser and id. |
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| 42 | * |
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| 43 | * @param p a parser. |
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| 44 | * @param id node id. |
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| 45 | */ |
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| 46 | public ASTIfStatement(Parser p, int id) { |
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| 47 | 24 | super(p, id); |
| 48 | 24 | } |
| 49 | ||
| 50 | /** {@inheritDoc} */ |
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| 51 | public Object jjtAccept(ParserVisitor visitor, Object data) { |
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| 52 | 0 | return visitor.visit(this, data); |
| 53 | } |
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| 54 | ||
| 55 | /** {@inheritDoc} */ |
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| 56 | public Object value(JexlContext jc) throws Exception { |
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| 57 | 20 | Object result = null; |
| 58 | /* first child is the expression */ |
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| 59 | 20 | Object expression = ((SimpleNode) jjtGetChild(0)).value(jc); |
| 60 | 20 | if (Coercion.coerceBoolean(expression).booleanValue()) { |
| 61 | // true statement |
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| 62 | 16 | result = ((SimpleNode) jjtGetChild(1)).value(jc); |
| 63 | } else { |
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| 64 | // if there is a false, execute it |
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| 65 | 4 | if (jjtGetNumChildren() == ELSE_STATEMENT_INDEX + 1) { |
| 66 | 3 | result = ((SimpleNode) jjtGetChild(2)).value(jc); |
| 67 | } |
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| 68 | } |
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| 69 | ||
| 70 | 20 | return result; |
| 71 | } |
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| 72 | ||
| 73 | } |
| This report is generated by jcoverage, Maven and Maven JCoverage Plugin. |