Mercurial Hosting > luan
annotate src/luan/interp/EqExpr.java @ 150:f35c50027985
make load() more consistent
git-svn-id: https://luan-java.googlecode.com/svn/trunk@151 21e917c8-12df-6dd8-5cb6-c86387c605b9
author | fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9> |
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date | Mon, 16 Jun 2014 10:11:48 +0000 |
parents | f5af13062b10 |
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1 package luan.interp; |
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2 |
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3 import luan.Luan; |
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4 import luan.LuanFunction; |
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5 import luan.LuanTable; |
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6 import luan.LuanException; |
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7 import luan.LuanSource; |
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8 import luan.LuanBit; |
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9 |
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10 |
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11 final class EqExpr extends BinaryOpExpr { |
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12 |
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13 EqExpr(LuanSource.Element se,Expr op1,Expr op2) { |
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14 super(se,op1,op2); |
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15 } |
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16 |
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17 @Override public Object eval(LuanStateImpl luan) throws LuanException { |
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18 Object o1 = op1.eval(luan); |
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19 Object o2 = op2.eval(luan); |
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20 if( o1 == o2 || o1 != null && o1.equals(o2) ) |
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21 return true; |
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22 if( o1 instanceof Number && o2 instanceof Number ) { |
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23 Number n1 = (Number)o1; |
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24 Number n2 = (Number)o2; |
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25 return n1.doubleValue() == n2.doubleValue(); |
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26 } |
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27 if( o1==null || o2==null || !o1.getClass().equals(o2.getClass()) ) |
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28 return false; |
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29 LuanTable mt1 = luan.getMetatable(o1); |
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30 LuanTable mt2 = luan.getMetatable(o2); |
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31 if( mt1==null || mt2==null ) |
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32 return false; |
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33 Object f = mt1.get("__eq"); |
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34 if( f == null || !f.equals(mt2.get("__eq")) ) |
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35 return null; |
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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36 LuanBit bit = luan.bit(se); |
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37 LuanFunction fn = bit.checkFunction(f); |
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38 return Luan.toBoolean( Luan.first(bit.call(fn,"__eq",new Object[]{o1,o2})) ); |
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39 } |
bca8fc5d928b
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40 } |