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annotate core/src/luan/LuanTableImpl.java @ 364:1a464e090538 0.3

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simplify table code
author Franklin Schmidt <fschmidt@gmail.com>
date Thu, 16 Apr 2015 11:51:21 -0600
parents 1bce334a816b
children 5e0acdeaea93
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1 package luan;
2df768b926aa start Luan
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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.AbstractMap;
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7 import java.util.List;
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8 import java.util.ArrayList;
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9 import java.util.Collections;
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10 import java.util.Comparator;
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11 import java.util.Set;
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12 import java.util.HashSet;
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13 import java.util.IdentityHashMap;
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14 import java.util.regex.Pattern;
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16
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17 class LuanTableImpl extends AbstractLuanTable implements LuanTable, DeepCloneable<LuanTableImpl> {
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18 private Map<Object,Object> map = null;
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19 private List<Object> list = null;
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20 private LuanTable metatable = null;
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21 private boolean hasJava = false;
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23 public LuanTableImpl() {}
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25 LuanTableImpl(List<Object> list) {
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26 this.list = list;
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27 this.map = newMap();
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28 map.put("n",list.size());
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29 for( int i=0; i<list.size(); i++ ) {
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30 if( list.get(i) == null ) {
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31 listToMap(i);
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32 break;
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33 }
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34 }
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35 }
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36
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37 LuanTableImpl(Map<Object,Object> map) {
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38 map.remove(null);
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39 for( Iterator<Object> i=map.values().iterator(); i.hasNext(); ) {
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40 if( i.next() == null )
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41 i.remove();
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42 }
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43 this.map = map;
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44 }
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45
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46 LuanTableImpl(Set<Object> set) {
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47 map = newMap();
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48 for( Object obj : set ) {
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49 if( obj != null )
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50 map.put(obj,Boolean.TRUE);
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51 }
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52 }
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54 @Override public LuanTableImpl shallowClone() {
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55 return new LuanTableImpl();
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56 }
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58 @Override public void deepenClone(LuanTableImpl clone,DeepCloner cloner) {
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59 if( map != null ) {
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60 clone.map = newMap();
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61 for( Map.Entry<Object,Object> entry : map.entrySet() ) {
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62 clone.map.put( cloner.get(entry.getKey()), cloner.get(entry.getValue()) );
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63 }
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64 }
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65 if( list != null ) {
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66 clone.list = new ArrayList<Object>();
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67 for( Object obj : list ) {
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68 clone.list.add( cloner.get(obj) );
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69 }
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70 }
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71 if( metatable != null )
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72 clone.metatable = cloner.get(metatable);
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73 clone.hasJava = hasJava;
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74 }
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75
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76 @Override public boolean isList() {
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77 return map==null || map.isEmpty();
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78 }
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80 @Override public List<Object> asList() {
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81 return list!=null ? list : Collections.emptyList();
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82 }
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83
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84 @Override protected Map<Object,Object> map() {
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85 return map!=null ? map : Collections.emptyMap();
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86 }
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87
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88 public boolean isSet() {
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89 if( list != null ) {
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90 for( Object obj : list ) {
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91 if( obj!=null && !obj.equals(Boolean.TRUE) )
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92 return false;
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93 }
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94 }
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95 if( map != null ) {
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96 for( Object obj : map.values() ) {
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97 if( !obj.equals(Boolean.TRUE) )
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98 return false;
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99 }
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100 }
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101 return true;
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102 }
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103
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104 public Set<Object> asSet() {
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105 if( list == null || list.isEmpty() )
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106 return map!=null ? map.keySet() : Collections.emptySet();
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107 Set<Object> rtn = map!=null ? new HashSet<Object>(map.keySet()) : new HashSet<Object>();
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108 for( int i=1; i<=list.size(); i++ ) {
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109 rtn.add(i);
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110 }
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111 return rtn;
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112 }
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113
222
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114 @Override protected String type() {
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115 return "table";
81
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116 }
84
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117
221
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118 @Override public Object get(Object key) {
46
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119 if( list != null ) {
48
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120 Integer iT = Luan.asInteger(key);
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121 if( iT != null ) {
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122 int i = iT - 1;
44
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123 if( i>=0 && i<list.size() )
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124 return list.get(i);
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125 }
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126 }
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127 if( map==null )
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128 return null;
1
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129 return map.get(key);
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130 }
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131
224
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132 @Override public void put(Object key,Object val) {
48
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133 Integer iT = Luan.asInteger(key);
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134 if( iT != null ) {
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135 int i = iT - 1;
47
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136 if( list != null || i == 0 ) {
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137 if( i == list().size() ) {
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diff changeset
138 if( val != null ) {
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139 list.add(val);
47
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diff changeset
140 mapToList();
46
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141 }
224
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diff changeset
142 return;
46
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143 } else if( i>=0 && i<list.size() ) {
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diff changeset
144 list.set(i,val);
118
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diff changeset
145 if( val == null ) {
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diff changeset
146 listToMap(i);
44
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147 }
224
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diff changeset
148 return;
44
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149 }
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150 }
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151 }
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152 if( map==null ) {
284
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diff changeset
153 map = newMap();
44
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154 }
46
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diff changeset
155 if( key instanceof Number && !(key instanceof Double) ) {
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diff changeset
156 Number n = (Number)key;
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diff changeset
157 key = Double.valueOf(n.doubleValue());
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diff changeset
158 }
1
2df768b926aa start Luan
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diff changeset
159 if( val == null ) {
224
05eb2837ddbf change LuanTable.put() to not return old value
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diff changeset
160 map.remove(key);
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diff changeset
161 } else {
224
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diff changeset
162 map.put(key,val);
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163 }
2df768b926aa start Luan
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164 }
2df768b926aa start Luan
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165
47
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diff changeset
166 private void mapToList() {
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diff changeset
167 if( map != null ) {
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diff changeset
168 while(true) {
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diff changeset
169 Object v = map.remove(Double.valueOf(list.size()+1));
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diff changeset
170 if( v == null )
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diff changeset
171 break;
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diff changeset
172 list.add(v);
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173 }
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diff changeset
174 }
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diff changeset
175 }
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diff changeset
176
118
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diff changeset
177 private void listToMap(int from) {
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diff changeset
178 if( list != null ) {
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diff changeset
179 while( list.size() > from ) {
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diff changeset
180 int i = list.size() - 1;
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diff changeset
181 Object v = list.remove(i);
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diff changeset
182 if( v != null ) {
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diff changeset
183 if( map==null )
284
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diff changeset
184 map = newMap();
118
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diff changeset
185 map.put(i+1,v);
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diff changeset
186 }
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diff changeset
187 }
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diff changeset
188 }
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diff changeset
189 }
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diff changeset
190
47
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diff changeset
191 private List<Object> list() {
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diff changeset
192 if( list == null ) {
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diff changeset
193 list = new ArrayList<Object>();
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diff changeset
194 mapToList();
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diff changeset
195 }
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diff changeset
196 return list;
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diff changeset
197 }
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diff changeset
198
221
ec016471c6eb make LuanTable an interface
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diff changeset
199 @Override public void insert(int pos,Object value) {
108
3c404a296995 make Package module more standard;
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diff changeset
200 if( value==null )
222
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diff changeset
201 throw new IllegalArgumentException("can't insert a nil value");
47
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diff changeset
202 list().add(pos-1,value);
108
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diff changeset
203 mapToList();
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diff changeset
204 }
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diff changeset
205
221
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diff changeset
206 @Override public void add(Object value) {
108
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diff changeset
207 if( value==null )
222
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parents: 221
diff changeset
208 throw new IllegalArgumentException("can't add a nil value");
108
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diff changeset
209 list().add(value);
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diff changeset
210 mapToList();
44
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diff changeset
211 }
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diff changeset
212
221
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213 @Override public Object remove(int pos) {
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214 return list().remove(pos-1);
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215 }
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216
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217 @Override public void sort(Comparator<Object> cmp) {
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218 Collections.sort(list(),cmp);
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219 }
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220
221
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221 @Override public int length() {
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222 return list==null ? 0 : list.size();
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223 }
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224
221
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225 @Override public Iterator<Map.Entry<Object,Object>> iterator() {
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226 if( list == null ) {
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227 if( map == null )
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228 return Collections.<Map.Entry<Object,Object>>emptyList().iterator();
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229 return map.entrySet().iterator();
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230 }
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231 if( map == null )
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232 return listIterator();
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233 return new Iterator<Map.Entry<Object,Object>>() {
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234 Iterator<Map.Entry<Object,Object>> iter = listIterator();
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235 boolean isList = true;
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236 public boolean hasNext() {
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237 boolean b = iter.hasNext();
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238 if( !b && isList ) {
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239 iter = map.entrySet().iterator();
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240 isList = false;
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241 b = iter.hasNext();
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242 }
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243 return b;
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244 }
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245 public Map.Entry<Object,Object> next() {
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246 return iter.next();
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247 }
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248 public void remove() {
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249 throw new UnsupportedOperationException();
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250 }
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251 };
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252 }
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253
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254 private Iterator<Map.Entry<Object,Object>> listIterator() {
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255 if( list == null )
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256 return Collections.<Map.Entry<Object,Object>>emptyList().iterator();
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257 final ListIterator iter = list.listIterator();
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258 return new Iterator<Map.Entry<Object,Object>>() {
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259 public boolean hasNext() {
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260 return iter.hasNext();
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261 }
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262 public Map.Entry<Object,Object> next() {
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263 Double key = Double.valueOf(iter.nextIndex()+1);
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264 return new AbstractMap.SimpleEntry<Object,Object>(key,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 @Override public LuanTable subList(int from,int to) {
226
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273 LuanTableImpl tbl = shallowClone();
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274 tbl.list = new ArrayList<Object>(list().subList(from-1,to-1));
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275 return tbl;
27
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276 }
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277
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278 @Override public LuanTable getMetatable() {
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279 return metatable;
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280 }
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281
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282 @Override public void setMetatable(LuanTable metatable) {
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283 this.metatable = metatable;
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284 }
300
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285
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286 @Override public boolean hasJava() {
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287 return hasJava;
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288 }
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289
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290 @Override public void setJava() {
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291 hasJava = true;
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292 }
1
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293 }