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annotate core/src/luan/LuanTable.java @ 431:3ffe8ba5b297

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TableLuan cleanup
author Franklin Schmidt <fschmidt@gmail.com>
date Sat, 02 May 2015 21:12:48 -0600
parents f28320fd671d
children d9df6d6cb927
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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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b76fcb72d97d add AbstractLuanTable and improve HttpLuan
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6 import java.util.AbstractMap;
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7 import java.util.LinkedHashMap;
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8 import java.util.List;
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9 import java.util.ArrayList;
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10 import java.util.Collections;
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11 import java.util.Comparator;
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12 import java.util.Set;
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13 import java.util.HashSet;
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14 import java.util.IdentityHashMap;
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15 import java.util.regex.Pattern;
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2df768b926aa start Luan
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2df768b926aa start Luan
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17
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18 public final class LuanTable implements Iterable<Map.Entry<Object,Object>>, DeepCloneable<LuanTable> {
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19 private Map<Object,Object> map = null;
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20 private List<Object> list = null;
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21 private LuanTable metatable = null;
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22 private boolean hasJava = false;
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23
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24 public LuanTable() {}
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25
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26 public LuanTable(List<Object> list) {
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27 this.list = list;
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28 this.map = newMap();
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29 map.put("n",list.size());
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30 for( int i=0; i<list.size(); i++ ) {
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31 if( list.get(i) == null ) {
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32 listToMap(i);
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33 break;
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34 }
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35 }
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36 }
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37
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38 public LuanTable(LuanTable tbl) {
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39 if( tbl.map != null && !tbl.map.isEmpty() )
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40 this.map = new LinkedHashMap<Object,Object>(tbl.map);
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41 if( tbl.length() > 0 )
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42 this.list = new ArrayList<Object>(tbl.list);
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43 this.metatable = tbl.metatable;
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44 }
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45
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46 @Override public LuanTable shallowClone() {
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47 return new LuanTable();
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48 }
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49
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50 @Override public void deepenClone(LuanTable clone,DeepCloner cloner) {
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51 if( map != null ) {
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52 clone.map = newMap();
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53 for( Map.Entry<Object,Object> entry : map.entrySet() ) {
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54 clone.map.put( cloner.get(entry.getKey()), cloner.get(entry.getValue()) );
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55 }
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56 }
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57 if( list != null ) {
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58 clone.list = new ArrayList<Object>();
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59 for( Object obj : list ) {
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60 clone.list.add( cloner.get(obj) );
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61 }
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62 }
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63 if( metatable != null )
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64 clone.metatable = cloner.get(metatable);
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65 clone.hasJava = hasJava;
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66 }
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67
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68 public boolean isList() {
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69 return map==null || map.isEmpty();
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70 }
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71
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72 public List<Object> asList() {
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73 return list!=null ? list : Collections.emptyList();
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74 }
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75
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76 public String toString(LuanState luan) throws LuanException {
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77 Object h = getHandler("__to_string");
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78 if( h == null )
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79 return rawToString();
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80 if( h instanceof LuanMeta ) {
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81 LuanMeta meta = (LuanMeta)h;
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82 return meta.__to_string(luan,this);
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83 }
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84 LuanFunction fn = luan.checkFunction(h);
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85 return luan.checkString( Luan.first( luan.call(fn,"__to_string",new Object[]{this}) ) );
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86 }
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87
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88 public String rawToString() {
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89 return "table: " + Integer.toHexString(hashCode());
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90 }
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91
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92 public Object get(LuanState luan,Object key) throws LuanException {
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93 Object value = rawGet(key);
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94 if( value != null )
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95 return value;
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96 Object h = getHandler("__index");
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97 if( h==null )
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98 return null;
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99 if( h instanceof LuanFunction ) {
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100 LuanFunction fn = (LuanFunction)h;
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101 return Luan.first(luan.call(fn,"__index",new Object[]{this,key}));
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102 }
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103 if( h instanceof LuanMeta ) {
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104 LuanMeta meta = (LuanMeta)h;
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105 return meta.__index(luan,this,key);
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106 }
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107 if( h instanceof LuanTable ) {
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108 LuanTable tbl = (LuanTable)h;
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109 return tbl.get(luan,key);
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110 }
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111 throw luan.exception("invalid type "+Luan.type(h)+" for metamethod __index");
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112 }
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113
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114 public Object rawGet(Object key) {
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115 if( list != null ) {
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116 Integer iT = Luan.asInteger(key);
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117 if( iT != null ) {
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118 int i = iT - 1;
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119 if( i>=0 && i<list.size() )
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120 return list.get(i);
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121 }
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122 }
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123 if( map==null )
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124 return null;
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125 return map.get(key);
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126 }
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127
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128 public void put(LuanState luan,Object key,Object value) throws LuanException {
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129 Object h = getHandler("__new_index");
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130 if( h==null || rawGet(key)!=null ) {
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131 rawPut(key,value);
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132 return;
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133 }
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134 if( h instanceof LuanFunction ) {
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135 LuanFunction fn = (LuanFunction)h;
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136 luan.call(fn,"__new_index",new Object[]{this,key,value});
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137 return;
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138 }
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139 if( h instanceof LuanMeta ) {
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140 LuanMeta meta = (LuanMeta)h;
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141 meta.__new_index(luan,this,key,value);
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142 return;
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143 }
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144 if( h instanceof LuanTable ) {
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145 LuanTable tbl = (LuanTable)h;
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146 tbl.put(luan,key,value);
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147 return;
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148 }
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149 throw luan.exception("invalid type "+Luan.type(h)+" for metamethod __new_index");
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150 }
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151
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152 public void rawPut(Object key,Object val) {
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153 Integer iT = Luan.asInteger(key);
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154 if( iT != null ) {
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155 int i = iT - 1;
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156 if( list != null || i == 0 ) {
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157 if( i == list().size() ) {
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158 if( val != null ) {
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159 list.add(val);
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160 mapToList();
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161 }
224
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162 return;
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163 } else if( i>=0 && i<list.size() ) {
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164 list.set(i,val);
118
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165 if( val == null ) {
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166 listToMap(i);
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167 }
224
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168 return;
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169 }
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170 }
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171 }
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172 if( map==null ) {
284
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173 map = newMap();
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174 }
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175 if( key instanceof Number && !(key instanceof Double) ) {
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176 Number n = (Number)key;
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177 key = Double.valueOf(n.doubleValue());
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178 }
1
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179 if( val == null ) {
224
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180 map.remove(key);
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181 } else {
224
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182 map.put(key,val);
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183 }
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184 }
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185
47
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186 private void mapToList() {
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187 if( map != null ) {
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188 while(true) {
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189 Object v = map.remove(Double.valueOf(list.size()+1));
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190 if( v == null )
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191 break;
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192 list.add(v);
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193 }
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194 }
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195 }
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196
118
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197 private void listToMap(int from) {
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198 if( list != null ) {
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199 while( list.size() > from ) {
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200 int i = list.size() - 1;
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201 Object v = list.remove(i);
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202 if( v != null ) {
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203 if( map==null )
284
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diff changeset
204 map = newMap();
118
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205 map.put(i+1,v);
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206 }
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207 }
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208 }
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209 }
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210
47
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diff changeset
211 private List<Object> list() {
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212 if( list == null ) {
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213 list = new ArrayList<Object>();
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214 mapToList();
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215 }
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216 return list;
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217 }
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218
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219 public void rawInsert(int pos,Object value) {
108
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220 if( value==null )
222
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diff changeset
221 throw new IllegalArgumentException("can't insert a nil value");
47
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222 list().add(pos-1,value);
108
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223 mapToList();
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224 }
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225
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diff changeset
226 public void rawAdd(Object value) {
108
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227 if( value==null )
222
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diff changeset
228 throw new IllegalArgumentException("can't add a nil value");
108
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229 list().add(value);
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diff changeset
230 mapToList();
44
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231 }
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232
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diff changeset
233 public Object rawRemove(int pos) {
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234 return list().remove(pos-1);
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235 }
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236
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237 public void rawSort(Comparator<Object> cmp) {
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238 Collections.sort(list(),cmp);
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239 }
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240
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241 public int length() {
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242 return list==null ? 0 : list.size();
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243 }
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244
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245 @Override public Iterator<Map.Entry<Object,Object>> iterator() {
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246 if( list == null ) {
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247 if( map == null )
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248 return Collections.<Map.Entry<Object,Object>>emptyList().iterator();
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249 return map.entrySet().iterator();
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250 }
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251 if( map == null )
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252 return listIterator();
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253 return new Iterator<Map.Entry<Object,Object>>() {
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254 Iterator<Map.Entry<Object,Object>> iter = listIterator();
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255 boolean isList = true;
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256 public boolean hasNext() {
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257 boolean b = iter.hasNext();
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258 if( !b && isList ) {
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259 iter = map.entrySet().iterator();
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260 isList = false;
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261 b = iter.hasNext();
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262 }
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263 return b;
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264 }
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265 public Map.Entry<Object,Object> next() {
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266 return iter.next();
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267 }
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268 public void remove() {
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269 throw new UnsupportedOperationException();
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270 }
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271 };
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272 }
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273
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274 private Iterator<Map.Entry<Object,Object>> listIterator() {
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275 if( list == null )
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276 return Collections.<Map.Entry<Object,Object>>emptyList().iterator();
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277 final ListIterator iter = list.listIterator();
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278 return new Iterator<Map.Entry<Object,Object>>() {
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279 public boolean hasNext() {
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280 return iter.hasNext();
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281 }
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282 public Map.Entry<Object,Object> next() {
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283 Double key = Double.valueOf(iter.nextIndex()+1);
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284 return new AbstractMap.SimpleEntry<Object,Object>(key,iter.next());
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285 }
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286 public void remove() {
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287 throw new UnsupportedOperationException();
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288 }
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289 };
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290 }
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291
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292 public LuanTable rawSubList(int from,int to) {
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293 LuanTable tbl = shallowClone();
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294 tbl.list = new ArrayList<Object>(list().subList(from-1,to-1));
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295 return tbl;
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296 }
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297
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298 public LuanTable getMetatable() {
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299 return metatable;
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300 }
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301
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302 public void setMetatable(LuanTable metatable) {
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303 this.metatable = metatable;
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304 }
300
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305
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306 public Object getHandler(String op) {
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307 LuanTable t = getMetatable();
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308 return t==null ? null : t.rawGet(op);
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309 }
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310
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311 public boolean hasJava() {
300
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312 return hasJava;
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313 }
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314
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315 public void setJava() {
300
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316 hasJava = true;
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317 }
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318
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319
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320 // from AbstractLuanTable
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321
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322 private Map<Object,Object> newMap() {
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323 return new LinkedHashMap<Object,Object>();
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324 }
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325
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326 public boolean isSet() {
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327 for( Map.Entry<Object,Object> entry : this ) {
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328 if( !entry.getValue().equals(Boolean.TRUE) )
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329 return false;
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330 }
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331 return true;
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332 }
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333
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334 public Set<Object> asSet() {
406
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335 Set<Object> set = new HashSet<Object>();
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336 for( Map.Entry<Object,Object> entry : this ) {
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337 set.add(entry.getKey());
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338 }
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339 return set;
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340 }
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341
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342 public Map<Object,Object> asMap() {
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343 Map<Object,Object> map = newMap();
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344 for( Map.Entry<Object,Object> entry : this ) {
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345 map.put(entry.getKey(),entry.getValue());
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346 }
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347 return map;
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348 }
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349
1
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350 }