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annotate src/luan/interp/FnCall.java @ 49:8ede219cd111

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add WebShell 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>
date Fri, 28 Dec 2012 19:35:04 +0000
parents 64ecb7a3aad7
children c84274b18f0c
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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1 package luan.interp;
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3 import luan.Luan;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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4 import luan.LuanFunction;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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5 import luan.LuanException;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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6 import luan.LuanSource;
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9 final class FnCall extends CodeImpl implements Expressions {
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10 final Expr fnExpr;
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11 final Expressions args;
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12 final String fnName;
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14 FnCall(LuanSource.Element se,Expr fnExpr,Expressions args) {
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15 super(se);
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16 this.fnExpr = fnExpr;
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17 this.args = args;
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18 this.fnName = fnExpr.se().text();
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19 }
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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21 @Override public Object[] eval(LuanStateImpl luan) throws LuanException {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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22 return call( luan, fnExpr.eval(luan) );
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23 }
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25 private Object[] call(LuanStateImpl luan,Object o) throws LuanException {
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26 if( o instanceof LuanFunction ) {
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27 LuanFunction fn = (LuanFunction)o;
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28 return luan.call( fn, se, fnName, args.eval(luan) );
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29 }
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30 Object h = luan.getHandler("__call",o);
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31 if( h != null )
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32 return call(luan,h);
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33 throw new LuanException( luan, se, "attempt to call a " + Luan.type(o) + " value" );
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34 }
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35 }