Mercurial Hosting > luan
annotate core/src/luan/LuanTableImpl.java @ 221:ec016471c6eb
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> |
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date | Thu, 17 Jul 2014 07:49:26 +0000 |
parents | core/src/luan/LuanTable.java@75750ceb45ee |
children | b76fcb72d97d |
rev | line source |
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1
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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.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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15 |
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16 |
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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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21 |
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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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51 |
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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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59 |
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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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63 |
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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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88 |
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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 |
59
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100 public boolean isSet() { |
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101 if( list != null ) { |
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102 for( Object obj : list ) { |
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103 if( obj!=null && !obj.equals(Boolean.TRUE) ) |
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104 return false; |
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105 } |
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106 } |
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107 if( map != null ) { |
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108 for( Object obj : map.values() ) { |
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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 |
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116 public Set<Object> asSet() { |
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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
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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() { |
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131 return repr( Collections.newSetFromMap(new IdentityHashMap<LuanTableImpl,Boolean>()) ); |
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132 } |
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133 |
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134 private String repr(Set<LuanTableImpl> set) { |
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135 if( !set.add(this) ) { |
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136 return "\"<circular reference>\""; |
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137 } |
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138 StringBuilder sb = new StringBuilder(); |
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139 sb.append('{'); |
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140 boolean isFirst = true; |
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141 if( list != null ) { |
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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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146 gotNull = true; |
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147 } else { |
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148 if( isFirst ) { |
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149 isFirst = false; |
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150 } else { |
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151 sb.append(", "); |
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152 } |
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153 if( gotNull ) |
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154 sb.append(i+1).append('='); |
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155 sb.append(repr(set,obj)); |
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156 } |
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157 } |
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158 } |
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159 if( map != null ) { |
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160 for( Map.Entry<Object,Object> entry : map.entrySet() ) { |
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161 if( isFirst ) { |
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162 isFirst = false; |
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163 } else { |
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164 sb.append(", "); |
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165 } |
88
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166 sb.append(reprKey(set,entry.getKey())).append('=').append(repr(set,entry.getValue())); |
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167 } |
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168 } |
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169 sb.append('}'); |
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170 return sb.toString(); |
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171 } |
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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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174 |
221
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175 private static String reprKey(Set<LuanTableImpl> set,Object obj) { |
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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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184 private static String repr(Set<LuanTableImpl> set,Object obj) { |
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185 if( obj instanceof LuanTableImpl ) { |
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186 LuanTableImpl t = (LuanTableImpl)obj; |
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187 return t.repr(set); |
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188 } else { |
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189 String s = Luan.repr(obj); |
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190 if( s == null ) |
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191 s = "<couldn't repr: " + Luan.stringEncode(Luan.toString(obj)) + ">"; |
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192 return s; |
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193 } |
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194 } |
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195 |
221
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196 @Override public Object get(Object key) { |
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197 if( list != null ) { |
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198 Integer iT = Luan.asInteger(key); |
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199 if( iT != null ) { |
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200 int i = iT - 1; |
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201 if( i>=0 && i<list.size() ) |
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202 return list.get(i); |
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203 } |
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204 } |
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205 if( map==null ) |
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206 return null; |
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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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258 while( list.size() > from ) { |
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259 int i = list.size() - 1; |
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260 Object v = list.remove(i); |
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261 if( v != null ) { |
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262 if( map==null ) |
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263 map = new HashMap<Object,Object>(); |
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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 |
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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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277 |
221
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278 @Override public void insert(int pos,Object value) { |
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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); |
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282 mapToList(); |
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283 } |
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284 |
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285 @Override public void add(Object value) { |
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286 if( value==null ) |
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287 throw new UnsupportedOperationException(); |
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288 list().add(value); |
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289 mapToList(); |
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290 } |
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291 |
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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 |
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296 @Override public void sort(Comparator<Object> cmp) { |
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297 Collections.sort(list(),cmp); |
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298 } |
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299 |
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300 @Override public int length() { |
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301 return list==null ? 0 : list.size(); |
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302 } |
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303 |
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304 @Override public Iterator<Map.Entry<Object,Object>> iterator() { |
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305 if( list == null ) { |
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306 if( map == null ) |
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307 return Collections.<Map.Entry<Object,Object>>emptyList().iterator(); |
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308 return map.entrySet().iterator(); |
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309 } |
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310 if( map == null ) |
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311 return listIterator(); |
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312 return new Iterator<Map.Entry<Object,Object>>() { |
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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 |
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333 private Iterator<Map.Entry<Object,Object>> listIterator() { |
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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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342 Double key = Double.valueOf(iter.nextIndex()+1); |
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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 } |
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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; |
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355 } |
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356 |
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357 @Override public LuanTable getMetatable() { |
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358 return metatable; |
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359 } |
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360 |
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361 @Override public void setMetatable(LuanTable metatable) { |
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362 this.metatable = metatable; |
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363 } |
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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
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390 } |