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annotate core/src/luan/LuanTableImpl.java @ 221:ec016471c6eb

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make LuanTable an interface git-svn-id: https://luan-java.googlecode.com/svn/trunk@222 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Thu, 17 Jul 2014 07:49:26 +0000
parents core/src/luan/LuanTable.java@75750ceb45ee
children b76fcb72d97d
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 package luan;
2df768b926aa start 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.HashMap;
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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.Collections;
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10 import java.util.Comparator;
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11 import java.util.Set;
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12 import java.util.HashSet;
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13 import java.util.IdentityHashMap;
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14 import java.util.regex.Pattern;
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2df768b926aa start Luan
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2df768b926aa start Luan
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17 public final class LuanTableImpl implements LuanTable, DeepCloneable<LuanTableImpl>, LuanRepr {
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18 private Map<Object,Object> map = null;
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19 private List<Object> list = null;
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20 private LuanTable metatable = null;
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22 public LuanTableImpl() {}
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23 /*
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24 public LuanTableImpl(LuanTableImpl tbl) {
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25 if( tbl.map != null )
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26 this.map = new HashMap<Object,Object>(tbl.map);
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27 if( tbl.list != null )
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28 this.list = new ArrayList<Object>(tbl.list);
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29 }
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30 */
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31 LuanTableImpl(List<Object> list) {
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32 this.list = list;
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33 this.map = new HashMap<Object,Object>();
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34 map.put("n",list.size());
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35 for( int i=0; i<list.size(); i++ ) {
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36 if( list.get(i) == null ) {
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37 listToMap(i);
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38 break;
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39 }
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40 }
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41 }
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42
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43 LuanTableImpl(Map<Object,Object> map) {
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44 map.remove(null);
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45 for( Iterator<Object> i=map.values().iterator(); i.hasNext(); ) {
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46 if( i.next() == null )
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47 i.remove();
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48 }
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49 this.map = map;
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50 }
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52 LuanTableImpl(Set<Object> set) {
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53 map = new HashMap<Object,Object>();
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54 for( Object obj : set ) {
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55 if( obj != null )
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56 map.put(obj,Boolean.TRUE);
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57 }
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58 }
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60 @Override public LuanTableImpl shallowClone() {
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61 return new LuanTableImpl();
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62 }
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64 @Override public void deepenClone(LuanTableImpl clone,DeepCloner cloner) {
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65 if( map != null ) {
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66 clone.map = new HashMap<Object,Object>();
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67 for( Map.Entry<Object,Object> entry : map.entrySet() ) {
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68 clone.map.put( cloner.get(entry.getKey()), cloner.get(entry.getValue()) );
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69 }
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70 }
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71 if( list != null ) {
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72 clone.list = new ArrayList<Object>();
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73 for( Object obj : list ) {
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74 clone.list.add( cloner.get(obj) );
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75 }
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76 }
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77 if( metatable != null )
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78 clone.metatable = cloner.get(metatable);
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79 }
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80
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81 public boolean isList() {
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82 return map==null || map.isEmpty();
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83 }
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84
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85 @Override public List<Object> asList() {
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86 return list!=null ? list : Collections.emptyList();
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87 }
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89 @Override public Map<Object,Object> asMap() {
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90 if( list == null || list.isEmpty() )
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91 return map!=null ? map : Collections.emptyMap();
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92 Map<Object,Object> rtn = map!=null ? new HashMap<Object,Object>(map) : new HashMap<Object,Object>();
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93 for( ListIterator iter = list.listIterator(); iter.hasNext(); ) {
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94 int i = iter.nextIndex();
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95 rtn.put(i+1,iter.next());
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96 }
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97 return rtn;
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98 }
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99
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100 public boolean isSet() {
47
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diff changeset
101 if( list != null ) {
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102 for( Object obj : list ) {
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diff changeset
103 if( obj!=null && !obj.equals(Boolean.TRUE) )
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diff changeset
104 return false;
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105 }
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106 }
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diff changeset
107 if( map != null ) {
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108 for( Object obj : map.values() ) {
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diff changeset
109 if( !obj.equals(Boolean.TRUE) )
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110 return false;
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111 }
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112 }
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113 return true;
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114 }
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115
59
5c9cadd0acce move standard calls from CmdLine to LuanState
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116 public Set<Object> asSet() {
47
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117 if( list == null || list.isEmpty() )
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118 return map!=null ? map.keySet() : Collections.emptySet();
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119 Set<Object> rtn = map!=null ? new HashSet<Object>(map.keySet()) : new HashSet<Object>();
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120 for( int i=1; i<=list.size(); i++ ) {
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121 rtn.add(i);
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122 }
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123 return rtn;
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124 }
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125
1
2df768b926aa start Luan
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126 @Override public String toString() {
81
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127 return "table: " + Integer.toHexString(hashCode());
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128 }
84
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129
147
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130 @Override public String repr() {
221
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131 return repr( Collections.newSetFromMap(new IdentityHashMap<LuanTableImpl,Boolean>()) );
72
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132 }
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diff changeset
133
221
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134 private String repr(Set<LuanTableImpl> set) {
72
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135 if( !set.add(this) ) {
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136 return "\"<circular reference>\"";
72
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137 }
47
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diff changeset
138 StringBuilder sb = new StringBuilder();
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diff changeset
139 sb.append('{');
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140 boolean isFirst = true;
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141 if( list != null ) {
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diff changeset
142 boolean gotNull = false;
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143 for( int i=0; i<list.size(); i++ ) {
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144 Object obj = list.get(i);
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145 if( obj==null ) {
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diff changeset
146 gotNull = true;
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diff changeset
147 } else {
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148 if( isFirst ) {
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diff changeset
149 isFirst = false;
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150 } else {
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diff changeset
151 sb.append(", ");
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152 }
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153 if( gotNull )
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diff changeset
154 sb.append(i+1).append('=');
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diff changeset
155 sb.append(repr(set,obj));
47
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156 }
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157 }
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158 }
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diff changeset
159 if( map != null ) {
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diff changeset
160 for( Map.Entry<Object,Object> entry : map.entrySet() ) {
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diff changeset
161 if( isFirst ) {
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diff changeset
162 isFirst = false;
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163 } else {
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diff changeset
164 sb.append(", ");
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165 }
88
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diff changeset
166 sb.append(reprKey(set,entry.getKey())).append('=').append(repr(set,entry.getValue()));
47
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167 }
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168 }
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diff changeset
169 sb.append('}');
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diff changeset
170 return sb.toString();
1
2df768b926aa start Luan
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171 }
2df768b926aa start Luan
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172
88
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173 private static final Pattern namePtn = Pattern.compile("[a-zA-Z_][a-zA-Z_0-9]*");
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diff changeset
174
221
ec016471c6eb make LuanTable an interface
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175 private static String reprKey(Set<LuanTableImpl> set,Object obj) {
88
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176 if( obj instanceof String ) {
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177 String s = (String)obj;
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178 if( namePtn.matcher(s).matches() )
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179 return s;
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180 }
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181 return "[" + repr(set,obj) + "]";
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182 }
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183
221
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diff changeset
184 private static String repr(Set<LuanTableImpl> set,Object obj) {
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diff changeset
185 if( obj instanceof LuanTableImpl ) {
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diff changeset
186 LuanTableImpl t = (LuanTableImpl)obj;
88
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187 return t.repr(set);
72
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diff changeset
188 } else {
88
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diff changeset
189 String s = Luan.repr(obj);
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190 if( s == null )
147
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diff changeset
191 s = "<couldn't repr: " + Luan.stringEncode(Luan.toString(obj)) + ">";
88
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192 return s;
72
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diff changeset
193 }
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194 }
84
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diff changeset
195
221
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diff changeset
196 @Override public Object get(Object key) {
46
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diff changeset
197 if( list != null ) {
48
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diff changeset
198 Integer iT = Luan.asInteger(key);
46
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diff changeset
199 if( iT != null ) {
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diff changeset
200 int i = iT - 1;
44
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diff changeset
201 if( i>=0 && i<list.size() )
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diff changeset
202 return list.get(i);
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diff changeset
203 }
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diff changeset
204 }
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diff changeset
205 if( map==null )
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206 return null;
1
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207 return map.get(key);
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208 }
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209
221
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210 @Override public Object put(Object key,Object val) {
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211 Integer iT = Luan.asInteger(key);
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212 if( iT != null ) {
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213 int i = iT - 1;
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214 if( list != null || i == 0 ) {
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215 if( i == list().size() ) {
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216 if( val != null ) {
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217 list.add(val);
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218 mapToList();
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219 }
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220 return null;
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221 } else if( i>=0 && i<list.size() ) {
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222 Object old = list.get(i);
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223 list.set(i,val);
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224 if( val == null ) {
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225 listToMap(i);
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226 }
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227 return old;
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228 }
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229 }
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230 }
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231 if( map==null ) {
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232 map = new HashMap<Object,Object>();
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233 }
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234 if( key instanceof Number && !(key instanceof Double) ) {
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235 Number n = (Number)key;
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236 key = Double.valueOf(n.doubleValue());
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237 }
1
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238 if( val == null ) {
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239 return map.remove(key);
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240 } else {
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241 return map.put(key,val);
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242 }
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243 }
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244
47
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245 private void mapToList() {
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246 if( map != null ) {
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247 while(true) {
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248 Object v = map.remove(Double.valueOf(list.size()+1));
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249 if( v == null )
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250 break;
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251 list.add(v);
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252 }
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253 }
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254 }
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255
118
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256 private void listToMap(int from) {
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257 if( list != null ) {
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diff changeset
258 while( list.size() > from ) {
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diff changeset
259 int i = list.size() - 1;
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diff changeset
260 Object v = list.remove(i);
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diff changeset
261 if( v != null ) {
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262 if( map==null )
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diff changeset
263 map = new HashMap<Object,Object>();
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diff changeset
264 map.put(i+1,v);
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265 }
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266 }
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267 }
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268 }
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269
47
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diff changeset
270 private List<Object> list() {
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271 if( list == null ) {
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272 list = new ArrayList<Object>();
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273 mapToList();
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274 }
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275 return list;
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276 }
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diff changeset
277
221
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diff changeset
278 @Override public void insert(int pos,Object value) {
108
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279 if( value==null )
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280 throw new UnsupportedOperationException();
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281 list().add(pos-1,value);
108
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diff changeset
282 mapToList();
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283 }
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diff changeset
284
221
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diff changeset
285 @Override public void add(Object value) {
108
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diff changeset
286 if( value==null )
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287 throw new UnsupportedOperationException();
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diff changeset
288 list().add(value);
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diff changeset
289 mapToList();
44
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diff changeset
290 }
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291
221
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diff changeset
292 @Override public Object remove(int pos) {
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293 return list().remove(pos-1);
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294 }
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295
221
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296 @Override public void sort(Comparator<Object> cmp) {
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diff changeset
297 Collections.sort(list(),cmp);
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298 }
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diff changeset
299
221
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diff changeset
300 @Override public int length() {
44
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diff changeset
301 return list==null ? 0 : list.size();
1
2df768b926aa start Luan
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302 }
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303
221
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diff changeset
304 @Override public Iterator<Map.Entry<Object,Object>> iterator() {
44
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305 if( list == null ) {
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diff changeset
306 if( map == null )
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diff changeset
307 return Collections.<Map.Entry<Object,Object>>emptyList().iterator();
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diff changeset
308 return map.entrySet().iterator();
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309 }
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diff changeset
310 if( map == null )
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diff changeset
311 return listIterator();
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diff changeset
312 return new Iterator<Map.Entry<Object,Object>>() {
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diff changeset
313 Iterator<Map.Entry<Object,Object>> iter = listIterator();
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314 boolean isList = true;
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315 public boolean hasNext() {
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316 boolean b = iter.hasNext();
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317 if( !b && isList ) {
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318 iter = map.entrySet().iterator();
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319 isList = false;
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320 b = iter.hasNext();
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321 }
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322 return b;
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323 }
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324 public Map.Entry<Object,Object> next() {
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325 return iter.next();
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326 }
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327 public void remove() {
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328 throw new UnsupportedOperationException();
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329 }
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330 };
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331 }
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332
221
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333 private Iterator<Map.Entry<Object,Object>> listIterator() {
44
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334 if( list == null )
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335 return Collections.<Map.Entry<Object,Object>>emptyList().iterator();
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336 final ListIterator iter = list.listIterator();
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337 return new Iterator<Map.Entry<Object,Object>>() {
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338 public boolean hasNext() {
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339 return iter.hasNext();
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340 }
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341 public Map.Entry<Object,Object> next() {
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a443637829c1 remove LuaNumber
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342 Double key = Double.valueOf(iter.nextIndex()+1);
44
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343 return new MapEntry(key,iter.next());
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344 }
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345 public void remove() {
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346 throw new UnsupportedOperationException();
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347 }
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348 };
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349 }
221
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350
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351 @Override public LuanTable subList(int from,int to) {
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352 LuanTableImpl tbl = new LuanTableImpl();
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353 tbl.list = new ArrayList<Object>(list().subList(from-1,to-1));
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354 return tbl;
27
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355 }
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356
221
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357 @Override public LuanTable getMetatable() {
35
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358 return metatable;
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359 }
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360
221
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361 @Override public void setMetatable(LuanTable metatable) {
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362 this.metatable = metatable;
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363 }
44
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364
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365 private static final class MapEntry implements Map.Entry<Object,Object> {
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366 private final Object key;
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367 private final Object value;
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368
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369 MapEntry(Object key,Object value) {
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370 this.key = key;
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371 this.value = value;
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372 }
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373
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374 @Override public Object getKey() {
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375 return key;
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376 }
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377
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378 @Override public Object getValue() {
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379 return value;
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380 }
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381
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382 @Override public Object setValue(Object value) {
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383 throw new UnsupportedOperationException();
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384 }
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385 }
202
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386
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387 public boolean isEmpty() {
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388 return (list==null || list.isEmpty()) && (map==null || map.isEmpty());
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389 }
1
2df768b926aa start Luan
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390 }