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org.apache.commons.jexl.parser.SimpleNode |
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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 | ||
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 | * useful interface to node. most autogened by javacc |
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23 | * |
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24 | * @author <a href="mailto:geirm@apache.org">Geir Magnusson Jr.</a> |
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25 | * @version $Id: SimpleNode.java,v 1.3 2004/02/28 13:45:21 yoavs Exp $ |
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26 | */ |
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27 | public class SimpleNode implements Node |
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28 | { |
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29 | protected Node parent; |
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30 | protected Node[] children; |
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31 | protected int id; |
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32 | protected Parser parser; |
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33 | ||
34 | public SimpleNode(int i) |
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35 | 12375 | { |
36 | 12375 | id = i; |
37 | 12375 | } |
38 | ||
39 | public SimpleNode(Parser p, int i) |
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40 | { |
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41 | 12375 | this(i); |
42 | 12375 | parser = p; |
43 | 12375 | } |
44 | ||
45 | public void jjtOpen() |
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46 | { |
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47 | 12375 | } |
48 | ||
49 | public void jjtClose() |
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50 | { |
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51 | 10602 | } |
52 | ||
53 | public void jjtSetParent(Node n) |
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54 | { |
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55 | 10683 | parent = n; |
56 | 10683 | } |
57 | ||
58 | public Node jjtGetParent() |
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59 | { |
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60 | 0 | return parent; |
61 | } |
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62 | ||
63 | public void jjtAddChild(Node n, int i) |
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64 | { |
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65 | 10683 | if (children == null) |
66 | { |
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67 | 8532 | children = new Node[i + 1]; |
68 | } |
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69 | 2151 | else if (i >= children.length) |
70 | { |
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71 | 0 | Node c[] = new Node[i + 1]; |
72 | 0 | System.arraycopy(children, 0, c, 0, children.length); |
73 | 0 | children = c; |
74 | } |
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75 | ||
76 | 10683 | children[i] = n; |
77 | 10683 | } |
78 | ||
79 | public Node jjtGetChild(int i) |
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80 | { |
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81 | 10539 | return children[i]; |
82 | } |
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83 | ||
84 | public int jjtGetNumChildren() |
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85 | { |
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86 | 3069 | return (children == null) ? 0 : children.length; |
87 | } |
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88 | ||
89 | /** Accept the visitor. **/ |
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90 | public Object jjtAccept(ParserVisitor visitor, Object data) |
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91 | { |
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92 | 0 | return visitor.visit(this, data); |
93 | } |
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94 | ||
95 | /** Accept the visitor. **/ |
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96 | public Object childrenAccept(ParserVisitor visitor, Object data) |
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97 | { |
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98 | 0 | if (children != null) |
99 | { |
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100 | 0 | for (int i = 0; i < children.length; ++i) |
101 | { |
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102 | 0 | children[i].jjtAccept(visitor, data); |
103 | } |
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104 | } |
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105 | 0 | return data; |
106 | } |
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107 | ||
108 | ||
109 | public String toString() |
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110 | { |
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111 | 0 | return ParserTreeConstants.jjtNodeName[id]; |
112 | } |
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113 | ||
114 | public String toString(String prefix) |
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115 | { |
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116 | 0 | return prefix + toString(); |
117 | } |
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118 | ||
119 | public void dump(String prefix) |
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120 | { |
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121 | 0 | System.out.println(toString(prefix)); |
122 | ||
123 | 0 | if (children != null) |
124 | { |
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125 | 0 | for (int i = 0; i < children.length; ++i) |
126 | { |
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127 | 0 | SimpleNode n = (SimpleNode)children[i]; |
128 | ||
129 | 0 | if (n != null) |
130 | { |
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131 | 0 | n.dump(prefix + " "); |
132 | } |
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133 | } |
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134 | } |
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135 | 0 | } |
136 | ||
137 | /** |
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138 | * basic interpret - just invoke interpret on all children |
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139 | */ |
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140 | public boolean interpret(JexlContext pc) |
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141 | throws Exception |
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142 | { |
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143 | 351 | for (int i=0; i<jjtGetNumChildren();i++) |
144 | { |
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145 | 162 | SimpleNode node = (SimpleNode) jjtGetChild(i); |
146 | 162 | if (!node.interpret(pc)) |
147 | 0 | return false; |
148 | } |
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149 | ||
150 | 189 | return true; |
151 | } |
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152 | ||
153 | ||
154 | /** |
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155 | * Returns the value of the node. |
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156 | */ |
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157 | public Object value(JexlContext context) |
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158 | throws Exception |
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159 | { |
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160 | 0 | return null; |
161 | } |
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162 | ||
163 | /** |
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164 | * Sets the value for the node - again, only makes sense for some nodes |
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165 | * but lazyness tempts me to put it here. Keeps things simple. |
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166 | */ |
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167 | public Object setValue(JexlContext context, Object value) |
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168 | throws Exception |
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169 | { |
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170 | 0 | return null; |
171 | } |
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172 | ||
173 | /** |
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174 | * Used to let a node calcuate it's value.. |
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175 | */ |
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176 | public Object execute(Object o, JexlContext ctx) |
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177 | throws Exception |
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178 | { |
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179 | 0 | return null; |
180 | } |
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181 | } |
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182 |
This report is generated by jcoverage, Maven and Maven JCoverage Plugin. |