Mercurial Hosting > luan
annotate src/luan/interp/LeExpr.java @ 48:64ecb7a3aad7
rename Lua to Luan
git-svn-id: https://luan-java.googlecode.com/svn/trunk@49 21e917c8-12df-6dd8-5cb6-c86387c605b9
author | fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9> |
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date | Fri, 28 Dec 2012 03:29:12 +0000 |
parents | a443637829c1 |
children | 8ede219cd111 |
rev | line source |
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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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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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2 |
48
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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3 import luan.Luan; |
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4 import luan.LuanFunction; |
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5 import luan.LuanException; |
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6 import luan.LuanSource; |
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7 |
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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8 |
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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9 final class LeExpr extends BinaryOpExpr { |
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10 |
48
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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11 LeExpr(LuanSource.Element se,Expr op1,Expr op2) { |
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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12 super(se,op1,op2); |
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13 } |
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14 |
48
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15 @Override public Object eval(LuanStateImpl lua) throws LuanException { |
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16 Object o1 = op1.eval(lua); |
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17 Object o2 = op2.eval(lua); |
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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18 if( o1 instanceof Number && o2 instanceof Number ) { |
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19 Number n1 = (Number)o1; |
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20 Number n2 = (Number)o2; |
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21 return n1.doubleValue() <= n2.doubleValue(); |
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22 } |
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23 if( o1 instanceof String && o2 instanceof String ) { |
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24 String s1 = (String)o1; |
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25 String s2 = (String)o2; |
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26 return s1.compareTo(s2) <= 0; |
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27 } |
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28 LuanFunction fn = lua.getBinHandler(se,"__le",o1,o2); |
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29 if( fn != null ) |
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30 return Luan.toBoolean( Luan.first(lua.call(fn,se,"__le",o1,o2)) ); |
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31 fn = lua.getBinHandler(se,"__lt",o1,o2); |
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32 if( fn != null ) |
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33 return !Luan.toBoolean( Luan.first(lua.call(fn,se,"__lt",o2,o1)) ); |
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34 throw new LuanException( lua, se, "attempt to compare " + Luan.type(o1) + " with " + Luan.type(o2) ); |
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35 } |
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36 } |