Mercurial Hosting > luan
view core/src/luan/impl/LenExpr.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 | f1601a4ce1aa |
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package luan.impl; import luan.Luan; import luan.LuanTable; import luan.LuanFunction; import luan.LuanException; import luan.LuanElement; import luan.LuanBit; final class LenExpr extends UnaryOpExpr { LenExpr(LuanElement el,Expr op) { super(el,op); } @Override public Object eval(LuanStateImpl luan) throws LuanException { Object o = op.eval(luan); if( o instanceof String ) { String s = (String)o; return s.length(); } if( o instanceof byte[] ) { byte[] a = (byte[])o; return a.length; } LuanBit bit = luan.bit(el); if( !(o instanceof LuanTable) ) throw bit.exception( "attempt to get length of a " + Luan.type(o) + " value" ); LuanTable t = (LuanTable)o; return t.length(luan); } }