Mercurial Hosting > luan

annotate src/luan/LuanTable.java @ 48:64ecb7a3aad7

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rename Lua to Luan git-svn-id: https://luan-java.googlecode.com/svn/trunk@49 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Fri, 28 Dec 2012 03:29:12 +0000
parents src/luan/LuaTable.java@659c7139e903
children 5c9cadd0acce
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
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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;
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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64ecb7a3aad7 rename Lua to Luan
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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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64ecb7a3aad7 rename Lua to Luan
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20 public LuanTable() {}
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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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64ecb7a3aad7 rename Lua to Luan
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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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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 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 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 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 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 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(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(entry.getKey()).append('=').append(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
47
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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) {
47
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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() {
44
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202 return list==null ? 0 : list.size();
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203 }
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204
27
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diff changeset
205 public Iterator<Map.Entry<Object,Object>> iterator() {
44
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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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diff changeset
211 if( map == null )
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212 return listIterator();
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diff changeset
213 return new Iterator<Map.Entry<Object,Object>>() {
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diff changeset
214 Iterator<Map.Entry<Object,Object>> iter = listIterator();
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diff changeset
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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a443637829c1 remove LuaNumber
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243 Double key = Double.valueOf(iter.nextIndex()+1);
44
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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)));
27
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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 }
44
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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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286 throw new UnsupportedOperationException();
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287 }
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288 }
1
2df768b926aa start Luan
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289 }