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annotate core/src/luan/impl/FnCall.java @ 404:d55e873e1f0d

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metatables now only apply to tables
author Franklin Schmidt <fschmidt@gmail.com>
date Wed, 29 Apr 2015 07:04:40 -0600
parents 3dcb0f9bee82
children 8fbb961aabd5
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 132
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1 package luan.impl;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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3 import luan.Luan;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 40
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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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7 import luan.LuanTable;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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10 final class FnCall extends CodeImpl implements Expressions {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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11 final Expr fnExpr;
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12 final Expressions args;
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13 final String fnName;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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15 FnCall(LuanSource.Element se,Expr fnExpr,Expressions args) {
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16 super(se);
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17 this.fnExpr = fnExpr;
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18 this.args = args;
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19 this.fnName = fnExpr.se().text();
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20 }
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21
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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22 @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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23 return call( luan, fnExpr.eval(luan) );
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parents: 31
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24 }
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parents: 31
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2428ecfed375 change LuanFunction.call() from returning Object[] to returning Object, to reduce garbage collection
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parents: 88
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26 private Object call(LuanStateImpl luan,Object o) throws LuanException {
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 40
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27 if( o instanceof LuanFunction ) {
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28 LuanFunction fn = (LuanFunction)o;
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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29 return luan.bit(se).call( fn, fnName, Luan.array(args.eval(luan)) );
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30 }
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31 if( o instanceof LuanTable ) {
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32 Object h = luan.getHandler("__call",(LuanTable)o);
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33 if( h != null )
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34 return call(luan,h);
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35 }
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6ca02b188dba add LuanBit to clean up code;
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents: 56
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36 throw luan.bit(fnExpr.se()).exception( "attempt to call '"+fnExpr.se().text()+"' (a " + Luan.type(o) + " value)" );
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37 }
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parents: 112
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39 @Override public String toString() {
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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40 return "(FnCall "+fnName+" "+fnExpr+" "+args+")";
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41 }
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42 }