Mercurial Hosting > luan
annotate src/luan/LuanTable.java @ 66:f7e17cfb35f9
minor toString() improvement
git-svn-id: https://luan-java.googlecode.com/svn/trunk@67 21e917c8-12df-6dd8-5cb6-c86387c605b9
author | fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9> |
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date | Tue, 22 Jan 2013 00:00:27 +0000 |
parents | 5c9cadd0acce |
children | cd9dbd7477ca |
rev | line source |
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1
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1 package luan; |
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2 |
27
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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; |
1
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13 |
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14 |
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15 public class LuanTable { |
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16 private Map<Object,Object> map = null; |
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17 private List<Object> list = null; |
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18 private LuanTable metatable = null; |
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19 |
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20 public LuanTable() {} |
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21 |
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22 public LuanTable(List<Object> list) { |
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23 this.list = list; |
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24 } |
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25 |
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26 public LuanTable(Map<Object,Object> map) { |
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27 this.map = map; |
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28 } |
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29 |
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30 public LuanTable(Set<Object> set) { |
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31 map = new HashMap<Object,Object>(); |
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32 for( Object obj : set ) { |
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33 map.put(obj,Boolean.TRUE); |
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34 } |
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35 } |
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36 |
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37 public boolean isList() { |
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38 return map==null || map.isEmpty(); |
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39 } |
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40 |
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41 public List<Object> asList() { |
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42 return list!=null ? list : Collections.emptyList(); |
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43 } |
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44 |
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45 public Map<Object,Object> asMap() { |
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46 if( list == null || list.isEmpty() ) |
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47 return map!=null ? map : Collections.emptyMap(); |
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48 Map<Object,Object> rtn = map!=null ? new HashMap<Object,Object>(map) : new HashMap<Object,Object>(); |
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49 for( ListIterator iter = list.listIterator(); iter.hasNext(); ) { |
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50 int i = iter.nextIndex(); |
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51 rtn.put(i+1,iter.next()); |
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52 } |
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53 return rtn; |
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54 } |
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55 |
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56 public boolean isSet() { |
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57 if( list != null ) { |
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58 for( Object obj : list ) { |
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59 if( obj!=null && !obj.equals(Boolean.TRUE) ) |
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60 return false; |
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61 } |
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62 } |
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63 if( map != null ) { |
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64 for( Object obj : map.values() ) { |
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65 if( !obj.equals(Boolean.TRUE) ) |
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66 return false; |
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67 } |
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68 } |
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69 return true; |
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70 } |
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71 |
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72 public Set<Object> asSet() { |
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73 if( list == null || list.isEmpty() ) |
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74 return map!=null ? map.keySet() : Collections.emptySet(); |
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75 Set<Object> rtn = map!=null ? new HashSet<Object>(map.keySet()) : new HashSet<Object>(); |
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76 for( int i=1; i<=list.size(); i++ ) { |
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77 rtn.add(i); |
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78 } |
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79 return rtn; |
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80 } |
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81 |
1
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82 @Override public String toString() { |
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83 // return "table: " + Integer.toHexString(hashCode()); |
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84 StringBuilder sb = new StringBuilder(); |
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85 sb.append('{'); |
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86 boolean isFirst = true; |
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87 if( list != null ) { |
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88 boolean gotNull = false; |
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89 for( int i=0; i<list.size(); i++ ) { |
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90 Object obj = list.get(i); |
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91 if( obj==null ) { |
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92 gotNull = true; |
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93 } else { |
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94 if( isFirst ) { |
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95 isFirst = false; |
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96 } else { |
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97 sb.append(", "); |
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98 } |
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99 if( gotNull ) |
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100 sb.append(i+1).append('='); |
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101 sb.append(Luan.toString(obj)); |
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102 } |
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103 } |
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104 } |
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105 if( map != null ) { |
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106 for( Map.Entry<Object,Object> entry : map.entrySet() ) { |
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107 if( isFirst ) { |
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108 isFirst = false; |
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109 } else { |
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110 sb.append(", "); |
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111 } |
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112 sb.append(Luan.toString(entry.getKey())).append('=').append(Luan.toString(entry.getValue())); |
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113 } |
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114 } |
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115 sb.append('}'); |
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116 return sb.toString(); |
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117 } |
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118 |
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119 public Object get(Object key) { |
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120 if( list != null ) { |
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121 Integer iT = Luan.asInteger(key); |
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122 if( iT != null ) { |
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123 int i = iT - 1; |
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124 if( i>=0 && i<list.size() ) |
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125 return list.get(i); |
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126 } |
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127 } |
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128 if( map==null ) |
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129 return null; |
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130 return map.get(key); |
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131 } |
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132 |
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133 public Object put(Object key,Object val) { |
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134 Integer iT = Luan.asInteger(key); |
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135 if( iT != null ) { |
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136 int i = iT - 1; |
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137 if( list != null || i == 0 ) { |
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138 if( i == list().size() ) { |
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139 if( val != null ) { |
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140 list.add(val); |
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141 mapToList(); |
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142 } |
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143 return null; |
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144 } else if( i>=0 && i<list.size() ) { |
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145 Object old = list.get(i); |
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146 list.set(i,val); |
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147 if( val == null && i == list.size()-1 ) { |
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148 while( i>=0 && list.get(i)==null ) { |
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149 list.remove(i--); |
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150 } |
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151 } |
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152 return old; |
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153 } |
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154 } |
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155 } |
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156 if( map==null ) { |
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157 map = new HashMap<Object,Object>(); |
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158 } |
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159 if( key instanceof Number && !(key instanceof Double) ) { |
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160 Number n = (Number)key; |
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161 key = Double.valueOf(n.doubleValue()); |
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162 } |
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163 if( val == null ) { |
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164 return map.remove(key); |
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165 } else { |
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166 return map.put(key,val); |
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167 } |
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168 } |
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169 |
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170 private void mapToList() { |
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171 if( map != null ) { |
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172 while(true) { |
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173 Object v = map.remove(Double.valueOf(list.size()+1)); |
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174 if( v == null ) |
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175 break; |
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176 list.add(v); |
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177 } |
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178 } |
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179 } |
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180 |
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181 private List<Object> list() { |
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182 if( list == null ) { |
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183 list = new ArrayList<Object>(); |
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184 mapToList(); |
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185 } |
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186 return list; |
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187 } |
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188 |
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189 public void insert(int pos,Object value) { |
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190 list().add(pos-1,value); |
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191 } |
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192 |
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193 public Object remove(int pos) { |
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194 return list().remove(pos-1); |
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195 } |
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196 |
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197 public void sort(Comparator<Object> cmp) { |
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198 Collections.sort(list(),cmp); |
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199 } |
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200 |
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201 public int length() { |
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202 return list==null ? 0 : list.size(); |
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203 } |
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204 |
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205 public Iterator<Map.Entry<Object,Object>> iterator() { |
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206 if( list == null ) { |
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207 if( map == null ) |
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208 return Collections.<Map.Entry<Object,Object>>emptyList().iterator(); |
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209 return map.entrySet().iterator(); |
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210 } |
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211 if( map == null ) |
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212 return listIterator(); |
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213 return new Iterator<Map.Entry<Object,Object>>() { |
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214 Iterator<Map.Entry<Object,Object>> iter = listIterator(); |
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215 boolean isList = true; |
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216 public boolean hasNext() { |
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217 boolean b = iter.hasNext(); |
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218 if( !b && isList ) { |
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219 iter = map.entrySet().iterator(); |
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220 isList = false; |
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221 b = iter.hasNext(); |
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222 } |
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223 return b; |
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224 } |
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225 public Map.Entry<Object,Object> next() { |
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226 return iter.next(); |
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227 } |
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228 public void remove() { |
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229 throw new UnsupportedOperationException(); |
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230 } |
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231 }; |
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232 } |
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233 |
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234 public Iterator<Map.Entry<Object,Object>> listIterator() { |
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235 if( list == null ) |
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236 return Collections.<Map.Entry<Object,Object>>emptyList().iterator(); |
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237 final ListIterator iter = list.listIterator(); |
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238 return new Iterator<Map.Entry<Object,Object>>() { |
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239 public boolean hasNext() { |
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240 return iter.hasNext(); |
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241 } |
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242 public Map.Entry<Object,Object> next() { |
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243 Double key = Double.valueOf(iter.nextIndex()+1); |
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244 return new MapEntry(key,iter.next()); |
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245 } |
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246 public void remove() { |
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247 throw new UnsupportedOperationException(); |
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248 } |
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249 }; |
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250 } |
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251 |
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252 public Object[] listToArray() { |
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253 return list==null ? new Object[0] : list.toArray(); |
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254 } |
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255 |
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256 public LuanTable subList(int from,int to) { |
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257 return new LuanTable(new ArrayList<Object>(list().subList(from-1,to-1))); |
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258 } |
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259 |
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260 public LuanTable getMetatable() { |
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261 return metatable; |
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262 } |
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263 |
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264 public void setMetatable(LuanTable metatable) { |
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265 this.metatable = metatable; |
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266 } |
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267 |
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268 private static final class MapEntry implements Map.Entry<Object,Object> { |
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269 private final Object key; |
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270 private final Object value; |
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271 |
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272 MapEntry(Object key,Object value) { |
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273 this.key = key; |
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274 this.value = value; |
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275 } |
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276 |
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277 @Override public Object getKey() { |
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278 return key; |
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279 } |
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280 |
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281 @Override public Object getValue() { |
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282 return value; |
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283 } |
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284 |
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285 @Override public Object setValue(Object value) { |
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
35
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286 throw new UnsupportedOperationException(); |
57054fa43189
implement table lib
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
35
diff
changeset
|
287 } |
57054fa43189
implement table lib
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
35
diff
changeset
|
288 } |
1
2df768b926aa
start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
diff
changeset
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289 } |