svn-gvsig-desktop / trunk / org.gvsig.desktop / org.gvsig.desktop.library / org.gvsig.expressionevaluator / org.gvsig.expressionevaluator.lib / org.gvsig.expressionevaluator.lib.impl / src / main / java / org / gvsig / expressionevaluator / impl / DefaultExpressionEvaluatorManager.java @ 44390
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1 | 43521 | jjdelcerro | package org.gvsig.expressionevaluator.impl; |
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2 | |||
3 | 44339 | jjdelcerro | import java.io.InputStream; |
4 | 44389 | jjdelcerro | import java.io.StringWriter; |
5 | 44339 | jjdelcerro | import java.net.URI; |
6 | import java.net.URL; |
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7 | 44139 | jjdelcerro | import org.gvsig.expressionevaluator.Grammar; |
8 | import org.gvsig.expressionevaluator.GrammarFactory; |
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9 | 43983 | jjdelcerro | import java.util.Collection; |
10 | 43939 | jjdelcerro | import java.util.HashMap; |
11 | import java.util.Map; |
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12 | 44389 | jjdelcerro | import java.util.Objects; |
13 | 44339 | jjdelcerro | import org.apache.commons.io.FilenameUtils; |
14 | import org.apache.commons.io.IOUtils; |
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15 | 44389 | jjdelcerro | import org.apache.commons.lang3.ArrayUtils; |
16 | import org.apache.commons.lang3.StringUtils; |
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17 | 43521 | jjdelcerro | import org.gvsig.expressionevaluator.Code; |
18 | import org.gvsig.expressionevaluator.CodeBuilder; |
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19 | 43983 | jjdelcerro | import org.gvsig.expressionevaluator.Expression; |
20 | 44006 | jjdelcerro | import org.gvsig.expressionevaluator.ExpressionBuilder; |
21 | 43521 | jjdelcerro | import org.gvsig.expressionevaluator.ExpressionEvaluatorManager; |
22 | import org.gvsig.expressionevaluator.Interpreter; |
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23 | import org.gvsig.expressionevaluator.LexicalAnalyzer; |
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24 | import org.gvsig.expressionevaluator.MutableSymbolTable; |
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25 | 44009 | jjdelcerro | import org.gvsig.expressionevaluator.Optimizer; |
26 | 43521 | jjdelcerro | import org.gvsig.expressionevaluator.SymbolTable; |
27 | 44126 | jjdelcerro | import org.gvsig.expressionevaluator.SymbolTableFactory; |
28 | 44139 | jjdelcerro | import org.gvsig.expressionevaluator.Compiler; |
29 | import org.gvsig.expressionevaluator.GrammarSet; |
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30 | 44389 | jjdelcerro | import org.gvsig.expressionevaluator.impl.javascripting.CosaScriptEngineFactory; |
31 | 44390 | jjdelcerro | import org.gvsig.tools.bookmarksandhistory.Bookmarks; |
32 | import org.gvsig.tools.bookmarksandhistory.History; |
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33 | import org.gvsig.tools.bookmarksandhistory.impl.BaseBookmarks; |
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34 | import org.gvsig.tools.bookmarksandhistory.impl.BaseHistory; |
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35 | 44339 | jjdelcerro | import org.gvsig.tools.script.Script; |
36 | 44006 | jjdelcerro | import org.slf4j.Logger; |
37 | import org.slf4j.LoggerFactory; |
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38 | 43521 | jjdelcerro | |
39 | |||
40 | 44339 | jjdelcerro | @SuppressWarnings("UseSpecificCatch") |
41 | 43521 | jjdelcerro | public class DefaultExpressionEvaluatorManager implements ExpressionEvaluatorManager { |
42 | |||
43 | 44006 | jjdelcerro | private static final Logger LOGGER = LoggerFactory.getLogger(DefaultExpressionEvaluatorManager.class); |
44 | |||
45 | 43521 | jjdelcerro | private Double accuracy; |
46 | 44126 | jjdelcerro | private final Map<String,SymbolTableFactory>symbolTableFactories; |
47 | 44139 | jjdelcerro | private final Map<String,GrammarFactory> grammarFactories; |
48 | 44390 | jjdelcerro | private Bookmarks<Expression> bookmarks; |
49 | private History<Expression> history; |
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50 | 43521 | jjdelcerro | |
51 | public DefaultExpressionEvaluatorManager() {
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52 | 44126 | jjdelcerro | this.symbolTableFactories = new HashMap<>(); |
53 | 44139 | jjdelcerro | this.grammarFactories = new HashMap<>(); |
54 | 43939 | jjdelcerro | } |
55 | |||
56 | 43521 | jjdelcerro | @Override
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57 | 43983 | jjdelcerro | public SymbolTable getSymbolTable(String name) { |
58 | 44126 | jjdelcerro | if( name == null ) { |
59 | return null; |
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60 | } |
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61 | SymbolTableFactory factory = this.symbolTableFactories.get(name.toUpperCase());
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62 | if( factory == null ) { |
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63 | return null; |
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64 | } |
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65 | 44389 | jjdelcerro | return factory.create();
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66 | 43939 | jjdelcerro | } |
67 | |||
68 | @Override
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69 | 44126 | jjdelcerro | public Collection<SymbolTableFactory> getSymbolTableFactories() { |
70 | return this.symbolTableFactories.values(); |
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71 | 43939 | jjdelcerro | } |
72 | |||
73 | @Override
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74 | 44126 | jjdelcerro | public final void registerSymbolTable(SymbolTableFactory factory) { |
75 | if( factory == null ) { |
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76 | throw new IllegalArgumentException("factory can't be null"); |
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77 | 44006 | jjdelcerro | } |
78 | 44126 | jjdelcerro | this.symbolTableFactories.put(factory.getName().toUpperCase(),factory);
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79 | 43939 | jjdelcerro | } |
80 | 43987 | jjdelcerro | |
81 | 43939 | jjdelcerro | @Override
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82 | 43521 | jjdelcerro | public Object evaluate(String source) { |
83 | DefaultInterpreter interpreter = new DefaultInterpreter();
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84 | DefaultCompiler compiler = new DefaultCompiler();
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85 | Code code = compiler.compileExpression(source); |
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86 | return interpreter.run(code);
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87 | } |
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88 | 44389 | jjdelcerro | |
89 | 43521 | jjdelcerro | @Override
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90 | public Object evaluate(SymbolTable symbolTable, String source) { |
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91 | DefaultInterpreter interpreter = new DefaultInterpreter();
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92 | DefaultCompiler compiler = new DefaultCompiler();
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93 | Code code = compiler.compileExpression(source); |
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94 | interpreter.setSymbolTable(symbolTable); |
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95 | return interpreter.run(code);
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96 | } |
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97 | |||
98 | @Override
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99 | public Object evaluate(SymbolTable symbolTable, Code code) { |
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100 | DefaultInterpreter interpreter = new DefaultInterpreter();
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101 | interpreter.setSymbolTable(symbolTable); |
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102 | return interpreter.run(code);
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103 | } |
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104 | |||
105 | @Override
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106 | 44389 | jjdelcerro | public String evaluatePage(String source) { |
107 | return evaluatePage(null, source); |
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108 | } |
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109 | |||
110 | @Override
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111 | public String evaluatePage(SymbolTable symbolTable, String source) { |
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112 | String[] sources = StringUtils.substringsBetween(source, "<%", "%>"); |
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113 | if( ArrayUtils.isEmpty(sources) ) {
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114 | return source;
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115 | } |
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116 | String[] values = new String[sources.length]; |
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117 | |||
118 | DefaultInterpreter interpreter = new DefaultInterpreter();
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119 | if( symbolTable!=null ) { |
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120 | interpreter.setSymbolTable(symbolTable); |
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121 | } |
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122 | StringWriter writer = new StringWriter(); |
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123 | interpreter.setWriter(writer); |
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124 | DefaultCompiler compiler = new DefaultCompiler();
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125 | for (int i = 0; i < sources.length; i++) { |
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126 | String theSource = sources[i];
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127 | if( StringUtils.startsWith(theSource, "=") ) { |
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128 | Code code = compiler.compileExpression(theSource.substring(1));
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129 | Object value = interpreter.run(code);
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130 | values[i] = Objects.toString(value, "");
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131 | } else {
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132 | Code code = compiler.compileExpression(theSource.substring(1));
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133 | writer.getBuffer().setLength(0);
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134 | interpreter.run(code); |
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135 | values[i] = writer.toString(); |
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136 | } |
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137 | 44390 | jjdelcerro | sources[i] = "<%"+sources[i]+"%>"; |
138 | 44389 | jjdelcerro | } |
139 | String output = StringUtils.replaceEach(source, sources, values);
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140 | return output;
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141 | } |
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142 | |||
143 | @Override
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144 | 43521 | jjdelcerro | public Code compile(String source) { |
145 | 44139 | jjdelcerro | Compiler compiler = this.createCompiler(); |
146 | 43521 | jjdelcerro | return compiler.compileExpression(source);
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147 | } |
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148 | |||
149 | @Override
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150 | public Code compile(LexicalAnalyzer lex, String source) { |
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151 | 44139 | jjdelcerro | Compiler compiler = this.createCompiler(); |
152 | 43521 | jjdelcerro | compiler.setLexicalAnalyzer(lex); |
153 | return compiler.compileExpression(source);
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154 | } |
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155 | |||
156 | @Override
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157 | 44019 | jjdelcerro | public Code optimize(SymbolTable symbolTable, Code code) {
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158 | Optimizer optimizer = this.createOptimizer();
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159 | return optimizer.optimize(symbolTable, code);
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160 | } |
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161 | |||
162 | @Override
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163 | 43521 | jjdelcerro | public MutableSymbolTable createSymbolTable() {
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164 | 43987 | jjdelcerro | DefaultSymbolTable theSymbolTable = new DefaultSymbolTable();
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165 | return theSymbolTable;
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166 | 43521 | jjdelcerro | } |
167 | 43939 | jjdelcerro | |
168 | 43987 | jjdelcerro | public void populateSymbolTable(SymbolTable aSymbolTable) { |
169 | 44126 | jjdelcerro | for (SymbolTableFactory factory : this.getSymbolTableFactories() ) { |
170 | if( factory.isAutoload() ) {
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171 | 44389 | jjdelcerro | SymbolTable symbolTable = factory.create(); |
172 | 43987 | jjdelcerro | aSymbolTable.addSymbolTable(symbolTable); |
173 | } |
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174 | } |
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175 | } |
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176 | |||
177 | 43521 | jjdelcerro | @Override
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178 | public LexicalAnalyzer createLexicalAnalyzer() {
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179 | return new SQLLexicalAnalyzer(); |
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180 | } |
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181 | |||
182 | @Override
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183 | public CodeBuilder createCodeBuilder() {
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184 | return new DefaultCodeBuilder(); |
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185 | } |
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186 | |||
187 | @Override
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188 | public Compiler createCompiler() { |
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189 | 44139 | jjdelcerro | DefaultCompiler compiler = new DefaultCompiler();
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190 | this.populateGrammars(compiler);
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191 | return compiler;
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192 | 43521 | jjdelcerro | } |
193 | |||
194 | @Override
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195 | public Interpreter createInterpreter() {
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196 | return new DefaultInterpreter(); |
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197 | } |
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198 | |||
199 | @Override
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200 | public Double getAccuracy() { |
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201 | return this.accuracy; |
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202 | } |
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203 | |||
204 | @Override
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205 | public void setAccuracy(Double accuracy) { |
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206 | this.accuracy = accuracy;
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207 | } |
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208 | 43983 | jjdelcerro | |
209 | @Override
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210 | public Expression createExpression() { |
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211 | DefaultExpression e = new DefaultExpression();
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212 | return e;
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213 | } |
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214 | 44006 | jjdelcerro | |
215 | @Override
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216 | public ExpressionBuilder createExpressionBuilder() {
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217 | ExpressionBuilder x = new DefaultExpressionBuilder();
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218 | return x;
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219 | } |
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220 | 44009 | jjdelcerro | |
221 | @Override
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222 | public Optimizer createOptimizer() {
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223 | Optimizer x = new DefaultOptimizer();
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224 | return x;
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225 | } |
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226 | 44139 | jjdelcerro | |
227 | @Override
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228 | public void registerGrammar(GrammarFactory factory) { |
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229 | if( factory==null ) { |
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230 | throw new IllegalArgumentException("factory can't be null"); |
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231 | } |
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232 | this.grammarFactories.put(factory.getName(), factory);
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233 | } |
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234 | |||
235 | @Override
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236 | public Collection<GrammarFactory> getGrammarFactories() { |
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237 | return this.grammarFactories.values(); |
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238 | } |
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239 | |||
240 | public void populateGrammars(Compiler compiler) { |
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241 | GrammarSet grammarSet = compiler.getGrammars(); |
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242 | for (GrammarFactory factory : this.getGrammarFactories() ) { |
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243 | if( factory.isAutoload() ) {
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244 | 44389 | jjdelcerro | Grammar grammar = factory.create(); |
245 | 44139 | jjdelcerro | grammarSet.add(grammar); |
246 | } |
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247 | } |
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248 | } |
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249 | |||
250 | 44263 | jjdelcerro | @Override
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251 | 44139 | jjdelcerro | public Grammar createGrammar(String name) { |
252 | DefaultGrammar grammar = new DefaultGrammar(name);
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253 | return grammar;
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254 | } |
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255 | 44263 | jjdelcerro | |
256 | @Override
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257 | 44390 | jjdelcerro | public Bookmarks<Expression> getBookmarks() { |
258 | 44263 | jjdelcerro | if( this.bookmarks==null ) { |
259 | 44390 | jjdelcerro | this.bookmarks = new BaseBookmarks<Expression>(); |
260 | 44263 | jjdelcerro | } |
261 | return this.bookmarks; |
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262 | } |
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263 | |||
264 | @Override
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265 | 44390 | jjdelcerro | public History<Expression> getHistory() { |
266 | 44263 | jjdelcerro | if( this.history==null ) { |
267 | 44390 | jjdelcerro | this.history = new BaseHistory<Expression>(20); |
268 | 44263 | jjdelcerro | } |
269 | return this.history; |
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270 | } |
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271 | 44339 | jjdelcerro | |
272 | @Override
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273 | public Script createScript(String name, String code, String languaje) { |
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274 | 44389 | jjdelcerro | SimpleScript sc = new SimpleScript(this.createInterpreter(), name, code); |
275 | 44339 | jjdelcerro | return sc;
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276 | } |
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277 | |||
278 | @Override
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279 | public Script locateScript(String name) { |
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280 | return null; |
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281 | } |
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282 | |||
283 | @Override
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284 | public Script loadScript(URI location) { |
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285 | InputStream is = null; |
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286 | String code = null; |
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287 | String name = null; |
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288 | try {
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289 | URL url = location.toURL();
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290 | is = url.openStream(); |
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291 | code = IOUtils.toString(is); |
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292 | name = FilenameUtils.getBaseName(location.getPath()); |
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293 | } catch(Exception ex) { |
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294 | return null; |
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295 | } finally {
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296 | IOUtils.closeQuietly(is); |
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297 | } |
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298 | 44389 | jjdelcerro | return this.createScript(name, code, CosaScriptEngineFactory.LANGUAGE_NAME); |
299 | 44339 | jjdelcerro | } |
300 | |||
301 | 43521 | jjdelcerro | } |