Mercurial Hosting > luan
view core/src/luan/impl/LeExpr.java @ 647:8e8c30b72e9b
move methods from LuanState to Luan
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Tue, 29 Mar 2016 20:39:14 -0600 |
parents | cdc70de628b5 |
children |
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package luan.impl; import luan.Luan; import luan.LuanFunction; import luan.LuanException; final class LeExpr extends BinaryOpExpr { LeExpr(Expr op1,Expr op2) { super(op1,op2); } @Override public Object eval(LuanStateImpl luan) throws LuanException { return le(luan); } private boolean le(LuanStateImpl luan) throws LuanException { Object o1 = op1.eval(luan); Object o2 = op2.eval(luan); if( o1 instanceof Number && o2 instanceof Number ) { Number n1 = (Number)o1; Number n2 = (Number)o2; return n1.doubleValue() <= n2.doubleValue(); } if( o1 instanceof String && o2 instanceof String ) { String s1 = (String)o1; String s2 = (String)o2; return s1.compareTo(s2) <= 0; } LuanFunction fn = Luan.getBinHandler("__le",o1,o2); if( fn != null ) return Luan.checkBoolean( Luan.first(fn.call(luan,new Object[]{o1,o2})) ); fn = Luan.getBinHandler("__lt",o1,o2); if( fn != null ) return !Luan.checkBoolean( Luan.first(fn.call(luan,new Object[]{o2,o1})) ); throw new LuanException( "attempt to compare " + Luan.type(o1) + " with " + Luan.type(o2) ); } }