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comparison src/luan/interp/LuaCompiler.java @ 30:8d8f4f5caef4

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minor git-svn-id: https://luan-java.googlecode.com/svn/trunk@31 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Fri, 07 Dec 2012 20:22:19 +0000
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children 5cf15507d77e
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29:9bc66d09ea48 30:8d8f4f5caef4
1 package luan.interp;
2
3 import org.parboiled.Parboiled;
4 import org.parboiled.errors.ErrorUtils;
5 import org.parboiled.parserunners.ReportingParseRunner;
6 import org.parboiled.parserunners.TracingParseRunner;
7 import org.parboiled.support.ParsingResult;
8 import luan.LuaFunction;
9 import luan.LuaState;
10 import luan.LuaException;
11
12
13 public final class LuaCompiler {
14 private LuaCompiler() {} // never
15
16 public static LuaFunction compile(LuaState lua,String src) throws LuaException {
17 LuaParser parser = Parboiled.createParser(LuaParser.class);
18 ParsingResult<?> result = new ReportingParseRunner(parser.Target()).run(src);
19 // ParsingResult<?> result = new TracingParseRunner(parser.Target()).run(src);
20 if( result.hasErrors() )
21 throw new LuaException( ErrorUtils.printParseErrors(result) );
22 Object resultValue = result.resultValue;
23 if( resultValue instanceof Expressions ) {
24 final Expressions expressions = (Expressions)resultValue;
25 return new LuaFunction() {
26 public Object[] call(LuaState lua,Object... args) throws LuaException {
27 return expressions.eval(lua);
28 }
29 };
30 }
31 Chunk chunk = (Chunk)resultValue;
32 return chunk.newClosure(lua);
33 }
34 }