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annotate src/luan/LuanState.java @ 782:655280eab1e2
start limited cloning
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Tue, 30 Aug 2016 01:29:33 -0600 |
parents | fbbdd369a13a |
children | 6a7c6879158d |
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1 package luan; |
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2 |
527 | 3 import java.io.Closeable; |
4 import java.io.IOException; | |
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5 import java.lang.ref.Reference; |
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6 import java.lang.ref.WeakReference; |
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7 import java.util.List; |
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8 import java.util.ArrayList; |
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9 import java.util.Map; |
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10 import java.util.HashMap; |
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11 import luan.impl.LuanCompiler; |
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12 import luan.modules.BasicLuan; |
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13 import luan.modules.JavaLuan; |
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14 |
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15 |
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16 public final class LuanState implements LuanCloneable { |
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17 public LuanJava java; |
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18 private Map registry; |
527 | 19 private final List<Reference<Closeable>> onClose = new ArrayList<Reference<Closeable>>(); |
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20 |
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21 public LuanState() { |
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22 java = new LuanJava(); |
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23 registry = new HashMap(); |
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24 } |
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25 |
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26 private LuanState(LuanState luan) {} |
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27 |
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28 @Override public LuanState shallowClone(LuanCloner cloner) { |
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29 return new LuanState(this); |
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30 } |
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31 |
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32 @Override public void deepenClone(LuanCloneable dc,LuanCloner cloner) { |
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33 LuanState clone = (LuanState)dc; |
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34 clone.registry = cloner.clone(registry); |
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35 clone.java = (LuanJava)cloner.clone(java); |
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36 } |
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37 |
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38 public final Map registry() { |
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39 return registry; |
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40 } |
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41 |
527 | 42 public void onClose(Closeable c) { |
43 onClose.add(new WeakReference<Closeable>(c)); | |
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44 } |
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45 |
527 | 46 public void close() throws IOException { |
47 for( Reference<Closeable> ref : onClose ) { | |
48 Closeable c = ref.get(); | |
49 if( c != null ) | |
50 c.close(); | |
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51 } |
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52 onClose.clear(); |
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53 } |
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54 /* |
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55 public final Object eval(String cmd) throws LuanException { |
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56 return eval(cmd,new LuanTable()); |
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57 } |
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58 |
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59 public final Object eval(String cmd,LuanTable env) throws LuanException { |
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60 LuanFunction fn = BasicLuan.load(this,cmd,"eval",env,true); |
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61 return fn.call(this); |
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62 } |
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63 */ |
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64 |
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65 public String toString(Object obj) throws LuanException { |
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66 if( obj instanceof LuanTable ) { |
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67 LuanTable tbl = (LuanTable)obj; |
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68 return tbl.toString(this); |
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69 } |
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70 if( obj == null ) |
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71 return "nil"; |
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72 if( obj instanceof Number ) |
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73 return Luan.toString((Number)obj); |
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74 if( obj instanceof byte[] ) |
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75 return "binary: " + Integer.toHexString(obj.hashCode()); |
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76 return obj.toString(); |
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77 } |
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78 |
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79 public Object index(Object obj,Object key) throws LuanException { |
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80 if( obj instanceof LuanTable ) { |
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81 LuanTable tbl = (LuanTable)obj; |
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82 return tbl.get(this,key); |
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83 } |
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84 if( obj != null && java.ok ) |
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85 return JavaLuan.__index(this,obj,key,false); |
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86 throw new LuanException("attempt to index a " + Luan.type(obj) + " value" ); |
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87 } |
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88 |
576 | 89 /* |
90 public Number checkNumber(Object obj) throws LuanException { | |
91 if( obj instanceof Number ) | |
92 return (Number)obj; | |
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93 throw new LuanException( "attempt to perform arithmetic on '"+context()+"' (a " + Luan.type(obj) + " value)" ); |
576 | 94 } |
95 */ | |
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96 } |