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annotate core/src/luan/impl/SetTableEntry.java @ 421:b31d614343e8

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add Io.LuanString.text_writer(); improve java related errors; fix to_string;
author Franklin Schmidt <fschmidt@gmail.com>
date Fri, 01 May 2015 15:13:14 -0600
parents 8fbb961aabd5
children 23a93c118042
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1 package luan.impl;
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3 import luan.LuanException;
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4 import luan.LuanTable;
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5 import luan.Luan;
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6 import luan.LuanFunction;
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7 import luan.LuanSource;
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8 import luan.LuanMeta;
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9 import luan.modules.JavaLuan;
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12 final class SetTableEntry extends CodeImpl implements Settable {
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13 private final Expr tableExpr;
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14 private final Expr keyExpr;
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16 SetTableEntry(LuanSource.Element se,Expr tableExpr,Expr keyExpr) {
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17 super(se);
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18 this.tableExpr = tableExpr;
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19 this.keyExpr = keyExpr;
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20 }
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22 @Override public void set(LuanStateImpl luan,Object value) throws LuanException {
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23 newindex( luan, tableExpr.eval(luan), keyExpr.eval(luan), value );
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24 }
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26 private void newindex(LuanStateImpl luan,Object t,Object key,Object value) throws LuanException {
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27 if( t instanceof LuanTable ) {
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28 LuanTable table = (LuanTable)t;
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29 Object h = table.getHandler("__newindex");
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30 if( h==null || table.get(key)!=null ) {
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31 try {
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32 table.put(key,value);
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33 } catch(IllegalArgumentException e) {
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34 throw luan.bit(se).exception(e);
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35 } catch(UnsupportedOperationException e) {
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36 throw luan.bit(se).exception(e);
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37 }
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38 return;
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39 }
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40 if( h instanceof LuanFunction ) {
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41 LuanFunction fn = (LuanFunction)h;
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42 luan.bit(se).call(fn,"__newindex",new Object[]{t,key,value});
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43 return;
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44 }
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45 if( h instanceof LuanMeta ) {
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46 LuanMeta meta = (LuanMeta)h;
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47 meta.__newindex(luan,table,key,value);
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48 return;
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49 }
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50 newindex(luan,h,key,value);
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51 }
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52 if( t != null && luan.currentEnvironment().hasJava() )
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53 JavaLuan.__newindex(luan,t,key,value);
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54 else
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55 throw luan.bit(se).exception( "attempt to index '"+tableExpr.se().text()+"' (a " + Luan.type(t) + " value)" );
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56 }
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58 }