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annotate core/src/luan/LuanTableImpl.java @ 406:9321a33b9b1c

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remove AbstractLuanTable
author Franklin Schmidt <fschmidt@gmail.com>
date Wed, 29 Apr 2015 11:24:00 -0600
parents 5e0acdeaea93
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 package luan;
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2
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3 import java.util.Iterator;
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4 import java.util.ListIterator;
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5 import java.util.Map;
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6 import java.util.AbstractMap;
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7 import java.util.LinkedHashMap;
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8 import java.util.List;
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9 import java.util.ArrayList;
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10 import java.util.Collections;
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11 import java.util.Comparator;
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12 import java.util.Set;
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13 import java.util.HashSet;
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14 import java.util.IdentityHashMap;
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15 import java.util.regex.Pattern;
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17
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18 class LuanTableImpl implements LuanTable, LuanRepr, DeepCloneable<LuanTableImpl> {
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19 private Map<Object,Object> map = null;
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20 private List<Object> list = null;
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21 private LuanTable metatable = null;
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22 private boolean hasJava = false;
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23
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24 public LuanTableImpl() {}
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26 LuanTableImpl(List<Object> list) {
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27 this.list = list;
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28 this.map = newMap();
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29 map.put("n",list.size());
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30 for( int i=0; i<list.size(); i++ ) {
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31 if( list.get(i) == null ) {
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32 listToMap(i);
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33 break;
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34 }
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35 }
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36 }
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38 LuanTableImpl(Map<Object,Object> map) {
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39 map.remove(null);
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40 for( Iterator<Object> i=map.values().iterator(); i.hasNext(); ) {
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41 if( i.next() == null )
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42 i.remove();
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43 }
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44 this.map = map;
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45 }
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47 LuanTableImpl(Set<Object> set) {
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48 map = newMap();
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49 for( Object obj : set ) {
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50 if( obj != null )
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51 map.put(obj,Boolean.TRUE);
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52 }
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53 }
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55 @Override public LuanTableImpl shallowClone() {
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56 return new LuanTableImpl();
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57 }
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59 @Override public void deepenClone(LuanTableImpl clone,DeepCloner cloner) {
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60 if( map != null ) {
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61 clone.map = newMap();
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62 for( Map.Entry<Object,Object> entry : map.entrySet() ) {
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63 clone.map.put( cloner.get(entry.getKey()), cloner.get(entry.getValue()) );
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64 }
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65 }
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66 if( list != null ) {
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67 clone.list = new ArrayList<Object>();
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68 for( Object obj : list ) {
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69 clone.list.add( cloner.get(obj) );
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70 }
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71 }
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72 if( metatable != null )
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73 clone.metatable = cloner.get(metatable);
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74 clone.hasJava = hasJava;
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75 }
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76
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77 @Override public boolean isList() {
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78 return map==null || map.isEmpty();
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79 }
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81 @Override public List<Object> asList() {
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82 return list!=null ? list : Collections.emptyList();
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83 }
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84
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85 protected Map<Object,Object> map() {
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86 return map!=null ? map : Collections.emptyMap();
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87 }
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88 /*
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89 @Override public boolean isSet() {
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90 if( list != null ) {
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91 for( Object obj : list ) {
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92 if( obj!=null && !obj.equals(Boolean.TRUE) )
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93 return false;
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94 }
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95 }
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96 if( map != null ) {
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97 for( Object obj : map.values() ) {
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98 if( !obj.equals(Boolean.TRUE) )
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99 return false;
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100 }
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101 }
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102 return true;
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103 }
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104
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105 @Override public Set<Object> asSet() {
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106 if( list == null || list.isEmpty() )
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107 return map!=null ? map.keySet() : Collections.emptySet();
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108 Set<Object> rtn = map!=null ? new HashSet<Object>(map.keySet()) : new HashSet<Object>();
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diff changeset
109 for( int i=1; i<=list.size(); i++ ) {
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diff changeset
110 rtn.add(i);
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111 }
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112 return rtn;
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diff changeset
113 }
397
5e0acdeaea93 add LuanTable isSet() and asSet() (untested)
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diff changeset
114 */
406
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diff changeset
115 protected String type() {
222
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116 return "table";
81
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117 }
84
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118
221
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119 @Override public Object get(Object key) {
46
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120 if( list != null ) {
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121 Integer iT = Luan.asInteger(key);
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122 if( iT != null ) {
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123 int i = iT - 1;
44
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124 if( i>=0 && i<list.size() )
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125 return list.get(i);
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126 }
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127 }
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128 if( map==null )
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129 return null;
1
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130 return map.get(key);
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131 }
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132
224
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diff changeset
133 @Override public void put(Object key,Object val) {
48
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diff changeset
134 Integer iT = Luan.asInteger(key);
46
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diff changeset
135 if( iT != null ) {
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diff changeset
136 int i = iT - 1;
47
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diff changeset
137 if( list != null || i == 0 ) {
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diff changeset
138 if( i == list().size() ) {
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diff changeset
139 if( val != null ) {
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diff changeset
140 list.add(val);
47
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diff changeset
141 mapToList();
46
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diff changeset
142 }
224
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diff changeset
143 return;
46
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diff changeset
144 } else if( i>=0 && i<list.size() ) {
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diff changeset
145 list.set(i,val);
118
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diff changeset
146 if( val == null ) {
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diff changeset
147 listToMap(i);
44
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148 }
224
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diff changeset
149 return;
44
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150 }
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151 }
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152 }
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153 if( map==null ) {
284
8870840251ea use LinkedHashMap in LuanTable to preserve order
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diff changeset
154 map = newMap();
44
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155 }
46
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diff changeset
156 if( key instanceof Number && !(key instanceof Double) ) {
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diff changeset
157 Number n = (Number)key;
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diff changeset
158 key = Double.valueOf(n.doubleValue());
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diff changeset
159 }
1
2df768b926aa start Luan
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diff changeset
160 if( val == null ) {
224
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parents: 222
diff changeset
161 map.remove(key);
1
2df768b926aa start Luan
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diff changeset
162 } else {
224
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diff changeset
163 map.put(key,val);
1
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164 }
2df768b926aa start Luan
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165 }
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166
47
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diff changeset
167 private void mapToList() {
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diff changeset
168 if( map != null ) {
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diff changeset
169 while(true) {
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diff changeset
170 Object v = map.remove(Double.valueOf(list.size()+1));
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diff changeset
171 if( v == null )
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diff changeset
172 break;
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diff changeset
173 list.add(v);
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diff changeset
174 }
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diff changeset
175 }
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diff changeset
176 }
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diff changeset
177
118
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diff changeset
178 private void listToMap(int from) {
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diff changeset
179 if( list != null ) {
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diff changeset
180 while( list.size() > from ) {
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diff changeset
181 int i = list.size() - 1;
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diff changeset
182 Object v = list.remove(i);
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parents: 108
diff changeset
183 if( v != null ) {
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parents: 108
diff changeset
184 if( map==null )
284
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diff changeset
185 map = newMap();
118
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diff changeset
186 map.put(i+1,v);
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diff changeset
187 }
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diff changeset
188 }
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diff changeset
189 }
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diff changeset
190 }
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diff changeset
191
47
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diff changeset
192 private List<Object> list() {
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diff changeset
193 if( list == null ) {
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diff changeset
194 list = new ArrayList<Object>();
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diff changeset
195 mapToList();
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diff changeset
196 }
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diff changeset
197 return list;
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diff changeset
198 }
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diff changeset
199
221
ec016471c6eb make LuanTable an interface
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parents: 202
diff changeset
200 @Override public void insert(int pos,Object value) {
108
3c404a296995 make Package module more standard;
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diff changeset
201 if( value==null )
222
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diff changeset
202 throw new IllegalArgumentException("can't insert a nil value");
47
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diff changeset
203 list().add(pos-1,value);
108
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diff changeset
204 mapToList();
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diff changeset
205 }
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diff changeset
206
221
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diff changeset
207 @Override public void add(Object value) {
108
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diff changeset
208 if( value==null )
222
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parents: 221
diff changeset
209 throw new IllegalArgumentException("can't add a nil value");
108
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diff changeset
210 list().add(value);
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parents: 88
diff changeset
211 mapToList();
44
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diff changeset
212 }
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diff changeset
213
221
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214 @Override public Object remove(int pos) {
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215 return list().remove(pos-1);
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216 }
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217
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218 @Override public void sort(Comparator<Object> cmp) {
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219 Collections.sort(list(),cmp);
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220 }
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221
221
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222 @Override public int length() {
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223 return list==null ? 0 : list.size();
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224 }
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225
221
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226 @Override public Iterator<Map.Entry<Object,Object>> iterator() {
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227 if( list == null ) {
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228 if( map == null )
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229 return Collections.<Map.Entry<Object,Object>>emptyList().iterator();
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230 return map.entrySet().iterator();
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231 }
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232 if( map == null )
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233 return listIterator();
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234 return new Iterator<Map.Entry<Object,Object>>() {
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235 Iterator<Map.Entry<Object,Object>> iter = listIterator();
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236 boolean isList = true;
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237 public boolean hasNext() {
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238 boolean b = iter.hasNext();
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239 if( !b && isList ) {
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240 iter = map.entrySet().iterator();
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241 isList = false;
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242 b = iter.hasNext();
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243 }
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244 return b;
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245 }
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246 public Map.Entry<Object,Object> next() {
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247 return iter.next();
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248 }
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249 public void remove() {
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250 throw new UnsupportedOperationException();
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251 }
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252 };
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253 }
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254
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255 private Iterator<Map.Entry<Object,Object>> listIterator() {
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256 if( list == null )
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257 return Collections.<Map.Entry<Object,Object>>emptyList().iterator();
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258 final ListIterator iter = list.listIterator();
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259 return new Iterator<Map.Entry<Object,Object>>() {
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260 public boolean hasNext() {
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261 return iter.hasNext();
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262 }
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263 public Map.Entry<Object,Object> next() {
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264 Double key = Double.valueOf(iter.nextIndex()+1);
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265 return new AbstractMap.SimpleEntry<Object,Object>(key,iter.next());
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266 }
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267 public void remove() {
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268 throw new UnsupportedOperationException();
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269 }
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270 };
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271 }
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272
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273 @Override public LuanTable subList(int from,int to) {
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274 LuanTableImpl tbl = shallowClone();
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275 tbl.list = new ArrayList<Object>(list().subList(from-1,to-1));
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276 return tbl;
27
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277 }
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278
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279 @Override public LuanTable getMetatable() {
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280 return metatable;
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281 }
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282
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283 @Override public void setMetatable(LuanTable metatable) {
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284 this.metatable = metatable;
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285 }
300
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286
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287 @Override public boolean hasJava() {
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288 return hasJava;
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289 }
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290
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291 @Override public void setJava() {
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292 hasJava = true;
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293 }
406
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294
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295
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296 // from AbstractLuanTable
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297
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298 protected final Map<Object,Object> newMap() {
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299 return new LinkedHashMap<Object,Object>();
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300 }
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301
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302 @Override public boolean isEmpty() {
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303 return isList() && length()==0;
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304 }
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305
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306 @Override public boolean isSet() {
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307 for( Map.Entry<Object,Object> entry : this ) {
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308 if( !entry.getValue().equals(Boolean.TRUE) )
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309 return false;
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310 }
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311 return true;
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312 }
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313
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314 @Override public Set<Object> asSet() {
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315 Set<Object> set = new HashSet<Object>();
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316 for( Map.Entry<Object,Object> entry : this ) {
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317 set.add(entry.getKey());
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318 }
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319 return set;
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320 }
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321
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322 @Override public Map<Object,Object> asMap() {
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323 Map<Object,Object> map = newMap();
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324 for( Map.Entry<Object,Object> entry : this ) {
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325 map.put(entry.getKey(),entry.getValue());
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326 }
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327 return map;
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328 }
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329
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330 @Override public LuanTable cloneTable() {
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331 return isList() ? new LuanTableImpl(new ArrayList<Object>(asList())) : new LuanTableImpl(asMap());
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332 }
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333
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334 @Override public String repr() {
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335 return repr( Collections.newSetFromMap(new IdentityHashMap<LuanTableImpl,Boolean>()) );
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336 }
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337
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338 private String repr(Set<LuanTableImpl> set) {
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339 if( !set.add(this) ) {
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340 return "\"<circular reference>\"";
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341 }
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342 StringBuilder sb = new StringBuilder();
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343 sb.append('{');
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344 boolean isFirst = true;
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345 for( Object obj : asList() ) {
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346 if( isFirst ) {
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347 isFirst = false;
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348 } else {
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349 sb.append(", ");
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350 }
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351 sb.append(repr(set,obj));
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352 }
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353 for( Map.Entry<Object,Object> entry : map().entrySet() ) {
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354 if( isFirst ) {
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355 isFirst = false;
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356 } else {
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357 sb.append(", ");
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358 }
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359 sb.append(reprKey(set,entry.getKey())).append('=').append(repr(set,entry.getValue()));
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360 }
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361 sb.append('}');
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362 return sb.toString();
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363 }
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364
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365 private static final Pattern namePtn = Pattern.compile("[a-zA-Z_][a-zA-Z_0-9]*");
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366
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367 private String reprKey(Set<LuanTableImpl> set,Object obj) {
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368 if( obj instanceof String ) {
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369 String s = (String)obj;
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370 if( namePtn.matcher(s).matches() )
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371 return s;
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372 }
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373 return "[" + repr(set,obj) + "]";
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374 }
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375
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376 String repr(Set<LuanTableImpl> set,Object obj) {
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377 if( obj instanceof LuanTableImpl ) {
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378 LuanTableImpl t = (LuanTableImpl)obj;
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379 return t.repr(set);
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380 } else {
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381 String s = Luan.repr(obj);
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382 if( s == null )
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383 s = "<couldn't repr: " + Luan.stringEncode(Luan.toString(obj)) + ">";
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384 return s;
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385 }
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386 }
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387
1
2df768b926aa start Luan
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388 }