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annotate src/luan/LuanTable.java @ 77:4bf3d0c0b6b9

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make LuanState cloneable git-svn-id: https://luan-java.googlecode.com/svn/trunk@78 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Fri, 15 Feb 2013 09:55:17 +0000
parents cd9dbd7477ca
children 9df729fa4419
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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
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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
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4 import java.util.ListIterator;
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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
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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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13 import java.util.IdentityHashMap;
1
2df768b926aa start Luan
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14
2df768b926aa start Luan
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15
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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16 public class LuanTable implements DeepCloneable<LuanTable> {
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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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64ecb7a3aad7 rename Lua to Luan
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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
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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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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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4bf3d0c0b6b9 make LuanState cloneable
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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()) );
4bf3d0c0b6b9 make LuanState cloneable
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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
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104 @Override public String toString() {
72
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105 return toString( Collections.newSetFromMap(new IdentityHashMap<LuanTable,Boolean>()) );
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106 }
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107
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108 private String toString(Set<LuanTable> set) {
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109 // return "table: " + Integer.toHexString(hashCode());
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110 if( !set.add(this) ) {
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111 return "...";
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112 }
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113 StringBuilder sb = new StringBuilder();
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114 sb.append('{');
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115 boolean isFirst = true;
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116 if( list != null ) {
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117 boolean gotNull = false;
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118 for( int i=0; i<list.size(); i++ ) {
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119 Object obj = list.get(i);
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120 if( obj==null ) {
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121 gotNull = true;
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122 } else {
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123 if( isFirst ) {
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124 isFirst = false;
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125 } else {
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126 sb.append(", ");
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127 }
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128 if( gotNull )
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129 sb.append(i+1).append('=');
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130 sb.append(toString(set,obj));
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131 }
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132 }
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133 }
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134 if( map != null ) {
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135 for( Map.Entry<Object,Object> entry : map.entrySet() ) {
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136 if( isFirst ) {
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137 isFirst = false;
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138 } else {
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139 sb.append(", ");
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140 }
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141 sb.append(toString(set,entry.getKey())).append('=').append(toString(set,entry.getValue()));
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142 }
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143 }
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diff changeset
144 sb.append('}');
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145 return sb.toString();
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146 }
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147
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diff changeset
148 private static String toString(Set<LuanTable> set,Object obj) {
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diff changeset
149 if( obj instanceof LuanTable ) {
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diff changeset
150 LuanTable t = (LuanTable)obj;
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151 return t.toString(set);
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152 } else {
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153 return Luan.toString(obj);
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154 }
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155 }
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156
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157 public Object get(Object key) {
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158 if( list != null ) {
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159 Integer iT = Luan.asInteger(key);
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160 if( iT != null ) {
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161 int i = iT - 1;
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162 if( i>=0 && i<list.size() )
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163 return list.get(i);
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164 }
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165 }
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166 if( map==null )
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167 return null;
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168 return map.get(key);
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169 }
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170
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171 public Object put(Object key,Object val) {
48
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172 Integer iT = Luan.asInteger(key);
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173 if( iT != null ) {
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174 int i = iT - 1;
47
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175 if( list != null || i == 0 ) {
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176 if( i == list().size() ) {
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177 if( val != null ) {
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178 list.add(val);
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179 mapToList();
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180 }
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181 return null;
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182 } else if( i>=0 && i<list.size() ) {
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183 Object old = list.get(i);
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184 list.set(i,val);
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185 if( val == null && i == list.size()-1 ) {
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186 while( i>=0 && list.get(i)==null ) {
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diff changeset
187 list.remove(i--);
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188 }
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189 }
46
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190 return old;
44
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191 }
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192 }
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193 }
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194 if( map==null ) {
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195 map = new HashMap<Object,Object>();
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196 }
46
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diff changeset
197 if( key instanceof Number && !(key instanceof Double) ) {
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198 Number n = (Number)key;
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diff changeset
199 key = Double.valueOf(n.doubleValue());
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200 }
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201 if( val == null ) {
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diff changeset
202 return map.remove(key);
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203 } else {
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diff changeset
204 return map.put(key,val);
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205 }
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206 }
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207
47
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diff changeset
208 private void mapToList() {
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209 if( map != null ) {
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210 while(true) {
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211 Object v = map.remove(Double.valueOf(list.size()+1));
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212 if( v == null )
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213 break;
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214 list.add(v);
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215 }
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216 }
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217 }
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218
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219 private List<Object> list() {
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220 if( list == null ) {
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221 list = new ArrayList<Object>();
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222 mapToList();
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223 }
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224 return list;
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225 }
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226
44
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227 public void insert(int pos,Object value) {
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228 list().add(pos-1,value);
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229 }
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230
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231 public Object remove(int pos) {
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232 return list().remove(pos-1);
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233 }
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234
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235 public void sort(Comparator<Object> cmp) {
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236 Collections.sort(list(),cmp);
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237 }
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238
1
2df768b926aa start Luan
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239 public int length() {
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240 return list==null ? 0 : list.size();
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241 }
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242
27
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243 public Iterator<Map.Entry<Object,Object>> iterator() {
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244 if( list == null ) {
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245 if( map == null )
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246 return Collections.<Map.Entry<Object,Object>>emptyList().iterator();
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247 return map.entrySet().iterator();
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248 }
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249 if( map == null )
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250 return listIterator();
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251 return new Iterator<Map.Entry<Object,Object>>() {
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252 Iterator<Map.Entry<Object,Object>> iter = listIterator();
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253 boolean isList = true;
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254 public boolean hasNext() {
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255 boolean b = iter.hasNext();
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256 if( !b && isList ) {
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257 iter = map.entrySet().iterator();
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258 isList = false;
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259 b = iter.hasNext();
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260 }
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261 return b;
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262 }
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263 public Map.Entry<Object,Object> next() {
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264 return iter.next();
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265 }
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266 public void remove() {
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267 throw new UnsupportedOperationException();
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268 }
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269 };
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270 }
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271
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272 public Iterator<Map.Entry<Object,Object>> listIterator() {
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273 if( list == null )
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274 return Collections.<Map.Entry<Object,Object>>emptyList().iterator();
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275 final ListIterator iter = list.listIterator();
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276 return new Iterator<Map.Entry<Object,Object>>() {
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277 public boolean hasNext() {
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278 return iter.hasNext();
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279 }
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280 public Map.Entry<Object,Object> next() {
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281 Double key = Double.valueOf(iter.nextIndex()+1);
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282 return new MapEntry(key,iter.next());
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283 }
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284 public void remove() {
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285 throw new UnsupportedOperationException();
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286 }
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287 };
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288 }
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289
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290 public Object[] listToArray() {
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291 return list==null ? new Object[0] : list.toArray();
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292 }
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293
48
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294 public LuanTable subList(int from,int to) {
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295 return new LuanTable(new ArrayList<Object>(list().subList(from-1,to-1)));
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296 }
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297
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298 public LuanTable getMetatable() {
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299 return metatable;
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300 }
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301
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302 public void setMetatable(LuanTable metatable) {
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303 this.metatable = metatable;
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304 }
44
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305
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306 private static final class MapEntry implements Map.Entry<Object,Object> {
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307 private final Object key;
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308 private final Object value;
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309
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310 MapEntry(Object key,Object value) {
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311 this.key = key;
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312 this.value = value;
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313 }
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314
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315 @Override public Object getKey() {
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316 return key;
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317 }
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318
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319 @Override public Object getValue() {
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320 return value;
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321 }
57054fa43189 implement table lib
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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322
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323 @Override public Object setValue(Object value) {
57054fa43189 implement table lib
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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324 throw new UnsupportedOperationException();
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325 }
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326 }
1
2df768b926aa start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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327 }