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annotate src/luan/interp/LuaCompiler.java @ 40:e3624b7cd603

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implement stack trace git-svn-id: https://luan-java.googlecode.com/svn/trunk@41 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Fri, 21 Dec 2012 10:45:54 +0000
parents 5cf15507d77e
children
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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1 package luan.interp;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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3 import org.parboiled.Parboiled;
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4 import org.parboiled.errors.ErrorUtils;
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5 import org.parboiled.parserunners.ReportingParseRunner;
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6 import org.parboiled.parserunners.TracingParseRunner;
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7 import org.parboiled.support.ParsingResult;
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8 import luan.LuaFunction;
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9 import luan.LuaState;
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10 import luan.LuaException;
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11 import luan.LuaSource;
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12 import luan.LuaElement;
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15 public final class LuaCompiler {
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16 private LuaCompiler() {} // never
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18 public static LuaFunction compile(LuaState lua,LuaSource src) throws LuaException {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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19 LuaParser parser = Parboiled.createParser(LuaParser.class);
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20 parser.source = src;
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21 ParsingResult<?> result = new ReportingParseRunner(parser.Target()).run(src.text);
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22 // ParsingResult<?> result = new TracingParseRunner(parser.Target()).run(src);
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23 if( result.hasErrors() )
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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24 throw new LuaException( lua, null, ErrorUtils.printParseErrors(result) );
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25 Object resultValue = result.resultValue;
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26 if( resultValue instanceof Expressions ) {
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27 final Expressions expressions = (Expressions)resultValue;
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28 return new LuaFunction() {
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29 public Object[] call(LuaState lua,Object[] args) throws LuaException {
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30 return expressions.eval((LuaStateImpl)lua);
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31 }
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32 };
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33 }
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34 Chunk chunk = (Chunk)resultValue;
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35 return chunk.newClosure((LuaStateImpl)lua);
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36 }
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38 public static LuaState newLuaState() {
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39 return new LuaStateImpl();
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40 }
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41 }