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view src/luan/interp/FnCall.java @ 49:8ede219cd111
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git-svn-id: https://luan-java.googlecode.com/svn/trunk@50 21e917c8-12df-6dd8-5cb6-c86387c605b9
author | fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9> |
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date | Fri, 28 Dec 2012 19:35:04 +0000 |
parents | 64ecb7a3aad7 |
children | c84274b18f0c |
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package luan.interp; import luan.Luan; import luan.LuanFunction; import luan.LuanException; import luan.LuanSource; final class FnCall extends CodeImpl implements Expressions { final Expr fnExpr; final Expressions args; final String fnName; FnCall(LuanSource.Element se,Expr fnExpr,Expressions args) { super(se); this.fnExpr = fnExpr; this.args = args; this.fnName = fnExpr.se().text(); } @Override public Object[] eval(LuanStateImpl luan) throws LuanException { return call( luan, fnExpr.eval(luan) ); } private Object[] call(LuanStateImpl luan,Object o) throws LuanException { if( o instanceof LuanFunction ) { LuanFunction fn = (LuanFunction)o; return luan.call( fn, se, fnName, args.eval(luan) ); } Object h = luan.getHandler("__call",o); if( h != null ) return call(luan,h); throw new LuanException( luan, se, "attempt to call a " + Luan.type(o) + " value" ); } }