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annotate src/luan/interp/LuanCompiler.java @ 108:3c404a296995

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make Package module more standard; return _ENV by default; add "import" statement; git-svn-id: https://luan-java.googlecode.com/svn/trunk@109 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Fri, 23 May 2014 03:21:54 +0000
parents 754e6030c029
children 2428ecfed375
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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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2
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3 import luan.LuanFunction;
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4 import luan.LuanState;
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5 import luan.LuanException;
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6 import luan.LuanSource;
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7 import luan.LuanElement;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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8 import luan.LuanTable;
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9 import luan.parser.ParseException;
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10 import java.util.Map;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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13 public final class LuanCompiler {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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14 private LuanCompiler() {} // never
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16 public static LuanFunction compileModule(LuanState luan,LuanSource src) throws LuanException {
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17 UpValue.Getter envGetter = new UpValue.EnvGetter();
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18 LuanParser parser = new LuanParser(src,envGetter);
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19 for( Map.Entry<Object,Object> entry : luan.global() ) {
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20 Object key = entry.getKey();
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21 if( key instanceof String )
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22 parser.addVar( (String)key, entry.getValue() );
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23 }
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24 try {
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25 FnDef fnDef = parser.RequiredModule();
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26 final Closure c = new Closure((LuanStateImpl)luan,fnDef);
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27 return new LuanFunction() {
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28 public Object[] call(LuanState luan,Object[] args) throws LuanException {
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29 Object[] rtn = c.call(luan,args);
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30 return rtn.length==0 ? new Object[]{c.upValues()[0].get()} : rtn;
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31 }
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32 };
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33 } catch(ParseException e) {
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34 //e.printStackTrace();
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35 LuanElement le = new LuanSource.CompilerElement(src);
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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36 throw luan.bit(le).exception( e.getFancyMessage() );
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37 }
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38 }
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40 public static LuanFunction compileInteractive(LuanState luan,LuanSource src) throws LuanException {
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41 UpValue.Getter envGetter = UpValue.globalGetter;
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42 LuanParser parser = new LuanParser(src,envGetter);
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43 try {
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44 FnDef fnDef = parser.Expressions();
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45 if( fnDef == null )
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46 fnDef = parser.RequiredModule();
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47 return new Closure((LuanStateImpl)luan,fnDef);
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48 } catch(ParseException e) {
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49 //e.printStackTrace();
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50 LuanElement le = new LuanSource.CompilerElement(src);
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51 throw luan.bit(le).exception( e.getFancyMessage() );
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52 }
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53 }
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54
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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55 public static LuanState newLuanState() {
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56 return new LuanStateImpl();
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57 }
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58 }