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annotate core/src/luan/impl/LeExpr.java @ 647:8e8c30b72e9b

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move methods from LuanState to Luan
author Franklin Schmidt <fschmidt@gmail.com>
date Tue, 29 Mar 2016 20:39:14 -0600
parents cdc70de628b5
children
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4eaee12f6c65 move luan/interp to impl
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 112
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1 package luan.impl;
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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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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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4 import luan.LuanFunction;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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5 import luan.LuanException;
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8 final class LeExpr extends BinaryOpExpr {
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9
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10 LeExpr(Expr op1,Expr op2) {
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11 super(op1,op2);
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12 }
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14 @Override public Object eval(LuanStateImpl luan) throws LuanException {
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15 return le(luan);
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16 }
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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18 private boolean le(LuanStateImpl luan) throws LuanException {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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19 Object o1 = op1.eval(luan);
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20 Object o2 = op2.eval(luan);
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21 if( o1 instanceof Number && o2 instanceof Number ) {
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22 Number n1 = (Number)o1;
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23 Number n2 = (Number)o2;
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24 return n1.doubleValue() <= n2.doubleValue();
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25 }
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26 if( o1 instanceof String && o2 instanceof String ) {
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27 String s1 = (String)o1;
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28 String s2 = (String)o2;
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29 return s1.compareTo(s2) <= 0;
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30 }
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8e8c30b72e9b move methods from LuanState to Luan
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31 LuanFunction fn = Luan.getBinHandler("__le",o1,o2);
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32 if( fn != null )
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33 return Luan.checkBoolean( Luan.first(fn.call(luan,new Object[]{o1,o2})) );
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34 fn = Luan.getBinHandler("__lt",o1,o2);
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35 if( fn != null )
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36 return !Luan.checkBoolean( Luan.first(fn.call(luan,new Object[]{o2,o1})) );
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37 throw new LuanException( "attempt to compare " + Luan.type(o1) + " with " + Luan.type(o2) );
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38 }
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39 }