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view src/luan/interp/ConcatExpr.java @ 86:6db8f286fa6c
_ENV is per module, not global
git-svn-id: https://luan-java.googlecode.com/svn/trunk@87 21e917c8-12df-6dd8-5cb6-c86387c605b9
author | fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9> |
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date | Wed, 27 Feb 2013 08:03:51 +0000 |
parents | d6c454b7f58c |
children | 6ca02b188dba |
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package luan.interp; import luan.Luan; import luan.LuanFunction; import luan.LuanException; import luan.LuanSource; final class ConcatExpr extends BinaryOpExpr { ConcatExpr(LuanSource.Element se,Expr op1,Expr op2) { super(se,op1,op2); } @Override public Object eval(LuanStateImpl luan) throws LuanException { Object o1 = op1.eval(luan); Object o2 = op2.eval(luan); String s1 = luan.toString(op1.se(),o1); String s2 = luan.toString(op2.se(),o2); /* if( s1 != null && s2 != null ) return s1 + s2; LuanFunction fn = luan.getBinHandler(se,"__concat",o1,o2); if( fn != null ) return Luan.first(luan.call(fn,se,"__concat",o1,o2)); String type = s1==null ? Luan.type(o1) : Luan.type(o2); throw new LuanException( luan, se, "attempt to concatenate a " + type + " value" ); */ return s1 + s2; } }