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annotate src/luan/LuanTable.java @ 86:6db8f286fa6c

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_ENV is per module, not global git-svn-id: https://luan-java.googlecode.com/svn/trunk@87 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Wed, 27 Feb 2013 08:03:51 +0000
parents cca4f8522893
children 6ca02b188dba
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rev   line source
1
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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diff changeset
1 package luan;
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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2
27
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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diff changeset
3 import java.util.Iterator;
44
57054fa43189 implement table lib
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4 import java.util.ListIterator;
1
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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5 import java.util.Map;
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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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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cd9dbd7477ca prevent stack overflow when printing table with circular references
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diff changeset
13 import java.util.IdentityHashMap;
1
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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14
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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15
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6db8f286fa6c _ENV is per module, not global
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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16 public final class LuanTable implements DeepCloneable<LuanTable>, Iterable<Map.Entry<Object,Object>> {
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17 private Map<Object,Object> map = null;
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18 private List<Object> list = null;
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19 private LuanTable metatable = null;
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21 public LuanTable() {}
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23 public LuanTable(List<Object> list) {
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24 this.list = list;
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25 }
1
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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27 public LuanTable(Map<Object,Object> map) {
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28 this.map = map;
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29 }
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30
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31 public LuanTable(Set<Object> set) {
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32 map = new HashMap<Object,Object>();
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33 for( Object obj : set ) {
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34 map.put(obj,Boolean.TRUE);
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35 }
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36 }
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37
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38 @Override public LuanTable shallowClone() {
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39 return new LuanTable();
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40 }
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41
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42 @Override public void deepenClone(LuanTable clone,DeepCloner cloner) {
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43 if( map != null ) {
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44 clone.map = new HashMap<Object,Object>();
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45 for( Map.Entry<Object,Object> entry : map.entrySet() ) {
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46 clone.map.put( cloner.get(entry.getKey()), cloner.get(entry.getValue()) );
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47 }
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48 }
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49 if( list != null ) {
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50 clone.list = new ArrayList<Object>();
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51 for( Object obj : list ) {
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52 clone.list.add( cloner.get(obj) );
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53 }
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54 }
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55 if( metatable != null )
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56 clone.metatable = cloner.deepClone(metatable);
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57 }
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59 public boolean isList() {
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60 return map==null || map.isEmpty();
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61 }
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63 public List<Object> asList() {
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64 return list!=null ? list : Collections.emptyList();
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65 }
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67 public Map<Object,Object> asMap() {
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68 if( list == null || list.isEmpty() )
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69 return map!=null ? map : Collections.emptyMap();
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70 Map<Object,Object> rtn = map!=null ? new HashMap<Object,Object>(map) : new HashMap<Object,Object>();
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71 for( ListIterator iter = list.listIterator(); iter.hasNext(); ) {
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72 int i = iter.nextIndex();
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73 rtn.put(i+1,iter.next());
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74 }
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75 return rtn;
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76 }
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78 public boolean isSet() {
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79 if( list != null ) {
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80 for( Object obj : list ) {
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81 if( obj!=null && !obj.equals(Boolean.TRUE) )
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82 return false;
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83 }
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84 }
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85 if( map != null ) {
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86 for( Object obj : map.values() ) {
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87 if( !obj.equals(Boolean.TRUE) )
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88 return false;
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89 }
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90 }
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91 return true;
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92 }
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93
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94 public Set<Object> asSet() {
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95 if( list == null || list.isEmpty() )
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96 return map!=null ? map.keySet() : Collections.emptySet();
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97 Set<Object> rtn = map!=null ? new HashSet<Object>(map.keySet()) : new HashSet<Object>();
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98 for( int i=1; i<=list.size(); i++ ) {
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99 rtn.add(i);
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100 }
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101 return rtn;
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102 }
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103
1
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104 @Override public String toString() {
81
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105 return "table: " + Integer.toHexString(hashCode());
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106 }
84
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107
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108 public String show() {
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109 return show( Collections.newSetFromMap(new IdentityHashMap<LuanTable,Boolean>()) );
72
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110 }
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111
84
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112 private String show(Set<LuanTable> set) {
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113 if( !set.add(this) ) {
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114 return "...";
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115 }
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116 StringBuilder sb = new StringBuilder();
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117 sb.append('{');
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118 boolean isFirst = true;
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119 if( list != null ) {
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120 boolean gotNull = false;
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121 for( int i=0; i<list.size(); i++ ) {
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122 Object obj = list.get(i);
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123 if( obj==null ) {
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124 gotNull = true;
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125 } else {
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126 if( isFirst ) {
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127 isFirst = false;
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128 } else {
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129 sb.append(", ");
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130 }
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131 if( gotNull )
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132 sb.append(i+1).append('=');
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133 sb.append(show(set,obj));
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134 }
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135 }
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136 }
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diff changeset
137 if( map != null ) {
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138 for( Map.Entry<Object,Object> entry : map.entrySet() ) {
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139 if( isFirst ) {
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140 isFirst = false;
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141 } else {
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142 sb.append(", ");
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143 }
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144 sb.append(show(set,entry.getKey())).append('=').append(show(set,entry.getValue()));
47
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145 }
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146 }
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147 sb.append('}');
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148 return sb.toString();
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149 }
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150
84
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diff changeset
151 private static String show(Set<LuanTable> set,Object obj) {
72
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152 if( obj instanceof LuanTable ) {
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153 LuanTable t = (LuanTable)obj;
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154 return t.show(set);
72
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155 } else {
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156 return Luan.toString(obj);
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157 }
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158 }
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159
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160 public Object get(Object key) {
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161 if( list != null ) {
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diff changeset
162 Integer iT = Luan.asInteger(key);
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163 if( iT != null ) {
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164 int i = iT - 1;
44
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165 if( i>=0 && i<list.size() )
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166 return list.get(i);
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167 }
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168 }
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169 if( map==null )
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170 return null;
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171 return map.get(key);
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172 }
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173
35
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diff changeset
174 public Object put(Object key,Object val) {
48
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diff changeset
175 Integer iT = Luan.asInteger(key);
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176 if( iT != null ) {
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177 int i = iT - 1;
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diff changeset
178 if( list != null || i == 0 ) {
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179 if( i == list().size() ) {
46
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diff changeset
180 if( val != null ) {
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diff changeset
181 list.add(val);
47
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diff changeset
182 mapToList();
46
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183 }
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184 return null;
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185 } else if( i>=0 && i<list.size() ) {
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186 Object old = list.get(i);
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187 list.set(i,val);
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188 if( val == null && i == list.size()-1 ) {
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189 while( i>=0 && list.get(i)==null ) {
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diff changeset
190 list.remove(i--);
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191 }
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192 }
46
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diff changeset
193 return old;
44
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194 }
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195 }
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196 }
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diff changeset
197 if( map==null ) {
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198 map = new HashMap<Object,Object>();
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199 }
46
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diff changeset
200 if( key instanceof Number && !(key instanceof Double) ) {
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diff changeset
201 Number n = (Number)key;
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diff changeset
202 key = Double.valueOf(n.doubleValue());
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203 }
1
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204 if( val == null ) {
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diff changeset
205 return map.remove(key);
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206 } else {
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diff changeset
207 return map.put(key,val);
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208 }
2df768b926aa start Luan
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209 }
2df768b926aa start Luan
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210
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211 private void mapToList() {
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212 if( map != null ) {
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213 while(true) {
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214 Object v = map.remove(Double.valueOf(list.size()+1));
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215 if( v == null )
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216 break;
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217 list.add(v);
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218 }
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219 }
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220 }
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221
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222 private List<Object> list() {
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223 if( list == null ) {
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224 list = new ArrayList<Object>();
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225 mapToList();
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226 }
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227 return list;
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228 }
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229
44
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230 public void insert(int pos,Object value) {
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231 list().add(pos-1,value);
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232 }
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233
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234 public Object remove(int pos) {
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235 return list().remove(pos-1);
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236 }
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237
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238 public void sort(Comparator<Object> cmp) {
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239 Collections.sort(list(),cmp);
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240 }
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241
1
2df768b926aa start Luan
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242 public int length() {
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243 return list==null ? 0 : list.size();
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244 }
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245
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246 public Iterator<Map.Entry<Object,Object>> iterator() {
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247 if( list == null ) {
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248 if( map == null )
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249 return Collections.<Map.Entry<Object,Object>>emptyList().iterator();
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250 return map.entrySet().iterator();
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251 }
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252 if( map == null )
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253 return listIterator();
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254 return new Iterator<Map.Entry<Object,Object>>() {
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255 Iterator<Map.Entry<Object,Object>> iter = listIterator();
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256 boolean isList = true;
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257 public boolean hasNext() {
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258 boolean b = iter.hasNext();
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259 if( !b && isList ) {
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260 iter = map.entrySet().iterator();
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261 isList = false;
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262 b = iter.hasNext();
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263 }
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264 return b;
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265 }
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266 public Map.Entry<Object,Object> next() {
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267 return iter.next();
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268 }
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269 public void remove() {
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270 throw new UnsupportedOperationException();
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271 }
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272 };
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273 }
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274
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275 public Iterator<Map.Entry<Object,Object>> listIterator() {
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276 if( list == null )
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277 return Collections.<Map.Entry<Object,Object>>emptyList().iterator();
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278 final ListIterator iter = list.listIterator();
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279 return new Iterator<Map.Entry<Object,Object>>() {
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280 public boolean hasNext() {
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281 return iter.hasNext();
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282 }
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283 public Map.Entry<Object,Object> next() {
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284 Double key = Double.valueOf(iter.nextIndex()+1);
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285 return new MapEntry(key,iter.next());
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286 }
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287 public void remove() {
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288 throw new UnsupportedOperationException();
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289 }
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290 };
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291 }
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292
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293 public Object[] listToArray() {
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294 return list==null ? new Object[0] : list.toArray();
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295 }
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296
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297 public LuanTable subList(int from,int to) {
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298 return new LuanTable(new ArrayList<Object>(list().subList(from-1,to-1)));
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299 }
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300
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301 public LuanTable getMetatable() {
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302 return metatable;
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303 }
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304
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305 public void setMetatable(LuanTable metatable) {
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306 this.metatable = metatable;
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307 }
44
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308
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309 private static final class MapEntry implements Map.Entry<Object,Object> {
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310 private final Object key;
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311 private final Object value;
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312
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313 MapEntry(Object key,Object value) {
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314 this.key = key;
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315 this.value = value;
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316 }
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317
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318 @Override public Object getKey() {
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319 return key;
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320 }
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321
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322 @Override public Object getValue() {
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323 return value;
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324 }
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325
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326 @Override public Object setValue(Object value) {
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327 throw new UnsupportedOperationException();
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328 }
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329 }
1
2df768b926aa start Luan
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330 }