Mercurial Hosting > luan
annotate src/luan/interp/SetTableEntry.java @ 37:8a57ebfdfd78
add JavaLib
git-svn-id: https://luan-java.googlecode.com/svn/trunk@38 21e917c8-12df-6dd8-5cb6-c86387c605b9
author | fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9> |
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date | Thu, 20 Dec 2012 02:36:07 +0000 |
parents | 2a35154aec14 |
children | e3624b7cd603 |
rev | line source |
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1 package luan.interp; |
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2 |
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3 import luan.LuaException; |
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4 import luan.LuaTable; |
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5 import luan.Lua; |
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6 import luan.LuaFunction; |
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7 |
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8 |
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9 final class SetTableEntry implements Settable { |
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10 private final Expr tableExpr; |
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11 private final Expr keyExpr; |
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12 |
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13 SetTableEntry(Expr tableExpr,Expr keyExpr) { |
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14 this.tableExpr = tableExpr; |
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15 this.keyExpr = keyExpr; |
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16 } |
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17 |
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18 @Override public void set(LuaStateImpl lua,Object value) throws LuaException { |
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19 newindex( lua, tableExpr.eval(lua), keyExpr.eval(lua), value ); |
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20 } |
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21 |
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22 private static void newindex(LuaStateImpl lua,Object t,Object key,Object value) throws LuaException { |
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23 Object h; |
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24 if( t instanceof LuaTable ) { |
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25 LuaTable table = (LuaTable)t; |
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26 Object old = table.put(key,value); |
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27 if( old != null ) |
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28 return; |
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29 h = lua.getHandler("__newindex",t); |
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30 if( h==null ) |
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31 return; |
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32 table.put(key,old); |
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33 } else { |
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34 h = lua.getHandler("__newindex",t); |
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35 if( h==null ) |
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36 throw new LuaException( "attempt to index a " + Lua.type(t) + " value" ); |
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37 } |
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38 if( h instanceof LuaFunction ) { |
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39 LuaFunction fn = (LuaFunction)h; |
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40 fn.call(lua,t,key,value); |
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41 } |
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42 newindex(lua,h,key,value); |
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43 } |
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44 |
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45 } |