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annotate core/src/luan/impl/ReturnStmt.java @ 228:7580379cdc79

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implement basic mail smtp git-svn-id: https://luan-java.googlecode.com/svn/trunk@229 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Wed, 24 Sep 2014 03:39:34 +0000
parents 3dcb0f9bee82
children b48cfa14ba60
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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1 package luan.impl;
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3 import luan.Luan;
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4 import luan.LuanException;
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5 import luan.LuanFunction;
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6 import luan.LuanSource;
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9 final class ReturnStmt extends CodeImpl implements Stmt {
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10 private final Expressions expressions;
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11 private final Expr tailFnExpr;
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12 boolean throwReturnException = true;
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14 ReturnStmt(LuanSource.Element se,Expressions expressions) {
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15 super(se);
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16 if( expressions instanceof FnCall ) { // tail call
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17 FnCall fnCall = (FnCall)expressions;
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18 this.expressions = fnCall.args;
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19 this.tailFnExpr = fnCall.fnExpr;
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20 } else {
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21 this.expressions = expressions;
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22 this.tailFnExpr = null;
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23 }
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24 }
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26 @Override public void eval(LuanStateImpl luan) throws LuanException {
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27 luan.returnValues = expressions.eval(luan);
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28 if( tailFnExpr != null ) {
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29 LuanSource.Element seTail = tailFnExpr.se();
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30 LuanFunction tailFn = luan.bit(seTail).checkFunction( tailFnExpr.eval(luan) );
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31 if( tailFn instanceof Closure ) {
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32 luan.tailFn = (Closure)tailFn;
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33 } else {
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34 luan.returnValues = luan.bit(seTail).call(tailFn,seTail.text(),Luan.array(luan.returnValues));
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35 }
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36 }
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37 if( throwReturnException )
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38 throw new ReturnException();
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39 }
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40 }