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annotate core/src/luan/LuanTableImpl.java @ 284:8870840251ea

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use LinkedHashMap in LuanTable to preserve order git-svn-id: https://luan-java.googlecode.com/svn/trunk@285 21e917c8-12df-6dd8-5cb6-c86387c605b9
author fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
date Tue, 02 Dec 2014 03:55:33 +0000
parents ef39bc4d3f70
children 9fb523472035
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1 package luan;
2df768b926aa start Luan
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2
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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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2df768b926aa start Luan
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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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6ca02b188dba add LuanBit to clean up code;
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14 import java.util.regex.Pattern;
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2df768b926aa start Luan
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15
2df768b926aa start Luan
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16
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17 class LuanTableImpl extends AbstractLuanTable implements LuanTable, DeepCloneable<LuanTableImpl>, LuanRepr {
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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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22 public LuanTableImpl() {}
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23 /*
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24 public LuanTableImpl(LuanTableImpl tbl) {
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25 if( tbl.map != null )
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26 this.map = newMap(tbl.map);
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27 if( tbl.list != null )
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28 this.list = new ArrayList<Object>(tbl.list);
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29 }
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30 */
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31 LuanTableImpl(List<Object> list) {
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32 this.list = list;
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33 this.map = newMap();
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34 map.put("n",list.size());
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35 for( int i=0; i<list.size(); i++ ) {
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36 if( list.get(i) == null ) {
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37 listToMap(i);
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38 break;
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39 }
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40 }
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41 }
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42
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43 LuanTableImpl(Map<Object,Object> map) {
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44 map.remove(null);
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45 for( Iterator<Object> i=map.values().iterator(); i.hasNext(); ) {
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46 if( i.next() == null )
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47 i.remove();
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48 }
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49 this.map = map;
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50 }
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51
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52 LuanTableImpl(Set<Object> set) {
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53 map = newMap();
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54 for( Object obj : set ) {
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55 if( obj != null )
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56 map.put(obj,Boolean.TRUE);
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57 }
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58 }
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60 @Override public LuanTableImpl shallowClone() {
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61 return new LuanTableImpl();
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62 }
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64 @Override public void deepenClone(LuanTableImpl clone,DeepCloner cloner) {
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65 if( map != null ) {
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66 clone.map = newMap();
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67 for( Map.Entry<Object,Object> entry : map.entrySet() ) {
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68 clone.map.put( cloner.get(entry.getKey()), cloner.get(entry.getValue()) );
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69 }
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70 }
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71 if( list != null ) {
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72 clone.list = new ArrayList<Object>();
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73 for( Object obj : list ) {
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74 clone.list.add( cloner.get(obj) );
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75 }
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76 }
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77 if( metatable != null )
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78 clone.metatable = cloner.get(metatable);
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79 }
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80
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81 @Override public boolean isList() {
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82 return map==null || map.isEmpty();
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83 }
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85 @Override public List<Object> asList() {
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86 return list!=null ? list : Collections.emptyList();
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87 }
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89 @Override public Map<Object,Object> asMap() {
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90 if( list == null || list.isEmpty() )
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91 return map!=null ? map : Collections.emptyMap();
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92 Map<Object,Object> rtn = map!=null ? newMap(map) : newMap();
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93 for( ListIterator iter = list.listIterator(); iter.hasNext(); ) {
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94 int i = iter.nextIndex();
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95 rtn.put(i+1,iter.next());
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96 }
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97 return rtn;
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98 }
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99
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100 public boolean isSet() {
47
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diff changeset
101 if( list != null ) {
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diff changeset
102 for( Object obj : list ) {
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diff changeset
103 if( obj!=null && !obj.equals(Boolean.TRUE) )
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diff changeset
104 return false;
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105 }
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diff changeset
106 }
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diff changeset
107 if( map != null ) {
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108 for( Object obj : map.values() ) {
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diff changeset
109 if( !obj.equals(Boolean.TRUE) )
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110 return false;
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111 }
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112 }
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113 return true;
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114 }
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diff changeset
115
59
5c9cadd0acce move standard calls from CmdLine to LuanState
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diff changeset
116 public Set<Object> asSet() {
47
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117 if( list == null || list.isEmpty() )
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118 return map!=null ? map.keySet() : Collections.emptySet();
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119 Set<Object> rtn = map!=null ? new HashSet<Object>(map.keySet()) : new HashSet<Object>();
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120 for( int i=1; i<=list.size(); i++ ) {
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diff changeset
121 rtn.add(i);
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122 }
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123 return rtn;
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124 }
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125
222
b76fcb72d97d add AbstractLuanTable and improve HttpLuan
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diff changeset
126 @Override protected String type() {
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127 return "table";
81
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128 }
84
cca4f8522893 minor changes
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diff changeset
129
147
cc3a0578edac fix Io.reverse_pickle
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diff changeset
130 @Override public String repr() {
221
ec016471c6eb make LuanTable an interface
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diff changeset
131 return repr( Collections.newSetFromMap(new IdentityHashMap<LuanTableImpl,Boolean>()) );
72
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132 }
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diff changeset
133
221
ec016471c6eb make LuanTable an interface
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diff changeset
134 private String repr(Set<LuanTableImpl> set) {
72
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diff changeset
135 if( !set.add(this) ) {
88
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diff changeset
136 return "\"<circular reference>\"";
72
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diff changeset
137 }
47
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diff changeset
138 StringBuilder sb = new StringBuilder();
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diff changeset
139 sb.append('{');
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diff changeset
140 boolean isFirst = true;
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diff changeset
141 if( list != null ) {
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diff changeset
142 for( int i=0; i<list.size(); i++ ) {
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diff changeset
143 Object obj = list.get(i);
226
392105b660d7 add LuanProperty
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diff changeset
144 if( isFirst ) {
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diff changeset
145 isFirst = false;
47
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diff changeset
146 } else {
226
392105b660d7 add LuanProperty
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diff changeset
147 sb.append(", ");
47
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diff changeset
148 }
226
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diff changeset
149 sb.append(repr(set,obj));
47
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150 }
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diff changeset
151 }
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diff changeset
152 if( map != null ) {
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diff changeset
153 for( Map.Entry<Object,Object> entry : map.entrySet() ) {
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diff changeset
154 if( isFirst ) {
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diff changeset
155 isFirst = false;
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diff changeset
156 } else {
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diff changeset
157 sb.append(", ");
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diff changeset
158 }
88
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diff changeset
159 sb.append(reprKey(set,entry.getKey())).append('=').append(repr(set,entry.getValue()));
47
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diff changeset
160 }
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diff changeset
161 }
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diff changeset
162 sb.append('}');
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diff changeset
163 return sb.toString();
1
2df768b926aa start Luan
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164 }
2df768b926aa start Luan
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165
88
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diff changeset
166 private static final Pattern namePtn = Pattern.compile("[a-zA-Z_][a-zA-Z_0-9]*");
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diff changeset
167
226
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diff changeset
168 private String reprKey(Set<LuanTableImpl> set,Object obj) {
88
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diff changeset
169 if( obj instanceof String ) {
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diff changeset
170 String s = (String)obj;
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diff changeset
171 if( namePtn.matcher(s).matches() )
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diff changeset
172 return s;
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diff changeset
173 }
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diff changeset
174 return "[" + repr(set,obj) + "]";
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diff changeset
175 }
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diff changeset
176
226
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diff changeset
177 String repr(Set<LuanTableImpl> set,Object obj) {
221
ec016471c6eb make LuanTable an interface
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diff changeset
178 if( obj instanceof LuanTableImpl ) {
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diff changeset
179 LuanTableImpl t = (LuanTableImpl)obj;
88
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diff changeset
180 return t.repr(set);
72
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diff changeset
181 } else {
88
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diff changeset
182 String s = Luan.repr(obj);
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diff changeset
183 if( s == null )
147
cc3a0578edac fix Io.reverse_pickle
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diff changeset
184 s = "<couldn't repr: " + Luan.stringEncode(Luan.toString(obj)) + ">";
88
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diff changeset
185 return s;
72
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diff changeset
186 }
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diff changeset
187 }
84
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diff changeset
188
221
ec016471c6eb make LuanTable an interface
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parents: 202
diff changeset
189 @Override public Object get(Object key) {
46
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diff changeset
190 if( list != null ) {
48
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diff changeset
191 Integer iT = Luan.asInteger(key);
46
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diff changeset
192 if( iT != null ) {
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diff changeset
193 int i = iT - 1;
44
57054fa43189 implement table lib
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diff changeset
194 if( i>=0 && i<list.size() )
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diff changeset
195 return list.get(i);
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diff changeset
196 }
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diff changeset
197 }
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diff changeset
198 if( map==null )
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diff changeset
199 return null;
1
2df768b926aa start Luan
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diff changeset
200 return map.get(key);
2df768b926aa start Luan
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diff changeset
201 }
2df768b926aa start Luan
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202
224
05eb2837ddbf change LuanTable.put() to not return old value
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parents: 222
diff changeset
203 @Override public void put(Object key,Object val) {
48
64ecb7a3aad7 rename Lua to Luan
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parents: 47
diff changeset
204 Integer iT = Luan.asInteger(key);
46
a443637829c1 remove LuaNumber
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diff changeset
205 if( iT != null ) {
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206 int i = iT - 1;
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207 if( list != null || i == 0 ) {
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208 if( i == list().size() ) {
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209 if( val != null ) {
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210 list.add(val);
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211 mapToList();
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212 }
224
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213 return;
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214 } else if( i>=0 && i<list.size() ) {
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215 list.set(i,val);
118
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216 if( val == null ) {
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217 listToMap(i);
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218 }
224
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219 return;
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220 }
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221 }
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222 }
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223 if( map==null ) {
284
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224 map = newMap();
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225 }
46
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226 if( key instanceof Number && !(key instanceof Double) ) {
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227 Number n = (Number)key;
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228 key = Double.valueOf(n.doubleValue());
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229 }
1
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230 if( val == null ) {
224
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231 map.remove(key);
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232 } else {
224
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233 map.put(key,val);
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234 }
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235 }
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236
47
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237 private void mapToList() {
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238 if( map != null ) {
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239 while(true) {
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240 Object v = map.remove(Double.valueOf(list.size()+1));
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241 if( v == null )
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242 break;
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243 list.add(v);
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244 }
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245 }
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246 }
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247
118
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248 private void listToMap(int from) {
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249 if( list != null ) {
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diff changeset
250 while( list.size() > from ) {
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251 int i = list.size() - 1;
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252 Object v = list.remove(i);
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253 if( v != null ) {
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254 if( map==null )
284
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diff changeset
255 map = newMap();
118
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256 map.put(i+1,v);
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257 }
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258 }
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259 }
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260 }
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261
47
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262 private List<Object> list() {
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263 if( list == null ) {
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264 list = new ArrayList<Object>();
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265 mapToList();
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266 }
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267 return list;
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268 }
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diff changeset
269
221
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270 @Override public void insert(int pos,Object value) {
108
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diff changeset
271 if( value==null )
222
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diff changeset
272 throw new IllegalArgumentException("can't insert a nil value");
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273 list().add(pos-1,value);
108
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274 mapToList();
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275 }
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276
221
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277 @Override public void add(Object value) {
108
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diff changeset
278 if( value==null )
222
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diff changeset
279 throw new IllegalArgumentException("can't add a nil value");
108
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diff changeset
280 list().add(value);
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diff changeset
281 mapToList();
44
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282 }
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diff changeset
283
221
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284 @Override public Object remove(int pos) {
47
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285 return list().remove(pos-1);
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286 }
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diff changeset
287
221
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288 @Override public void sort(Comparator<Object> cmp) {
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diff changeset
289 Collections.sort(list(),cmp);
44
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290 }
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diff changeset
291
221
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292 @Override public int length() {
44
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diff changeset
293 return list==null ? 0 : list.size();
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294 }
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295
221
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296 @Override public Iterator<Map.Entry<Object,Object>> iterator() {
44
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297 if( list == null ) {
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298 if( map == null )
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299 return Collections.<Map.Entry<Object,Object>>emptyList().iterator();
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300 return map.entrySet().iterator();
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301 }
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302 if( map == null )
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303 return listIterator();
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304 return new Iterator<Map.Entry<Object,Object>>() {
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diff changeset
305 Iterator<Map.Entry<Object,Object>> iter = listIterator();
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diff changeset
306 boolean isList = true;
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307 public boolean hasNext() {
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diff changeset
308 boolean b = iter.hasNext();
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diff changeset
309 if( !b && isList ) {
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diff changeset
310 iter = map.entrySet().iterator();
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diff changeset
311 isList = false;
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diff changeset
312 b = iter.hasNext();
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313 }
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314 return b;
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315 }
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316 public Map.Entry<Object,Object> next() {
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317 return iter.next();
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318 }
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319 public void remove() {
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320 throw new UnsupportedOperationException();
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321 }
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322 };
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323 }
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324
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325 private Iterator<Map.Entry<Object,Object>> listIterator() {
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326 if( list == null )
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327 return Collections.<Map.Entry<Object,Object>>emptyList().iterator();
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328 final ListIterator iter = list.listIterator();
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329 return new Iterator<Map.Entry<Object,Object>>() {
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330 public boolean hasNext() {
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331 return iter.hasNext();
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332 }
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333 public Map.Entry<Object,Object> next() {
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334 Double key = Double.valueOf(iter.nextIndex()+1);
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335 return new AbstractMap.SimpleEntry<Object,Object>(key,iter.next());
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336 }
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337 public void remove() {
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338 throw new UnsupportedOperationException();
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339 }
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340 };
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341 }
221
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342
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343 @Override public LuanTable subList(int from,int to) {
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344 LuanTableImpl tbl = shallowClone();
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345 tbl.list = new ArrayList<Object>(list().subList(from-1,to-1));
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346 return tbl;
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347 }
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348
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349 @Override public LuanTable getMetatable() {
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350 return metatable;
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351 }
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352
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353 @Override public void setMetatable(LuanTable metatable) {
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354 this.metatable = metatable;
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355 }
1
2df768b926aa start Luan
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356 }