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annotate core/src/luan/impl/LuanCompiler.java @ 503:92c3d22745b8

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make _ENV optional
author Franklin Schmidt <fschmidt@gmail.com>
date Wed, 20 May 2015 23:24:46 -0600
parents b48cfa14ba60
children 60c549d43988
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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4eaee12f6c65 move luan/interp to impl
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 165
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1 package luan.impl;
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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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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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9 import luan.modules.JavaLuan;
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10 import luan.modules.PackageLuan;
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11 import java.util.Map;
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14 public final class LuanCompiler {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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15 private LuanCompiler() {} // never
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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17 public static LuanFunction compile(LuanState luan,LuanSource src,LuanTable env,boolean allowExpr) throws LuanException {
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18 LuanParser parser = new LuanParser(src,env);
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19 parser.addVar( "java", JavaLuan.javaFn );
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20 parser.addVar( "require", PackageLuan.requireFn );
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21 FnDef fnDef = parse(luan,parser,allowExpr);
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22 final LuanStateImpl luanImpl = (LuanStateImpl)luan;
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23 return new Closure(luanImpl,fnDef);
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24 }
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25
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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26 private static FnDef parse(LuanState luan,LuanParser parser,boolean allowExpr) throws LuanException {
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27 try {
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28 if( allowExpr ) {
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29 FnDef fnDef = parser.Expression();
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30 if( fnDef != null )
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31 return fnDef;
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32 }
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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33 return parser.RequiredModule();
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34 } catch(ParseException e) {
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35 //e.printStackTrace();
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36 throw luan.exception( e.getFancyMessage() );
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37 }
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38 }
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40 public static LuanState newLuanState() {
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41 return new LuanStateImpl();
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42 }
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43 }