Mercurial Hosting > luan
view core/src/luan/impl/LeExpr.java @ 557:6268c1ce6ea8
sane queryparser update
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Sun, 21 Jun 2015 16:15:52 -0600 |
parents | b48cfa14ba60 |
children | 4723d22062ce |
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package luan.impl; import luan.Luan; import luan.LuanFunction; import luan.LuanException; import luan.LuanElement; import luan.LuanBit; final class LeExpr extends BinaryOpExpr { LeExpr(LuanElement el,Expr op1,Expr op2) { super(el,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; } LuanBit bit = luan.bit(el); LuanFunction fn = bit.getBinHandler("__le",o1,o2); if( fn != null ) return bit.checkBoolean( Luan.first(bit.call(fn,"__le",new Object[]{o1,o2})) ); fn = bit.getBinHandler("__lt",o1,o2); if( fn != null ) return !bit.checkBoolean( Luan.first(bit.call(fn,"__lt",new Object[]{o2,o1})) ); throw bit.exception( "attempt to compare " + Luan.type(o1) + " with " + Luan.type(o2) ); } }