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annotate core/src/luan/LuanTable.java @ 498:ee55be414a34

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Http.response is now mostly luan
author Franklin Schmidt <fschmidt@gmail.com>
date Mon, 18 May 2015 00:25:35 -0600
parents 55f9f74f1e55
children d3183a330ff5
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1 package luan;
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2
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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.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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17
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18 public final class LuanTable implements DeepCloneable {
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19 private Map map = null;
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20 private List 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 list) {
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27 int n = list.size();
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28 for( int i=0; i<n; i++ ) {
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29 Object val = list.get(i);
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30 if( val != null )
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31 rawPut(i+1,val);
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32 }
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33 }
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34
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35 public LuanTable(Map map) {
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36 for( Object stupid : map.entrySet() ) {
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37 Map.Entry entry = (Map.Entry)stupid;
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38 Object key = entry.getKey();
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39 Object value = entry.getValue();
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40 if( key != null && value != null )
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41 rawPut(key,value);
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42 }
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43 }
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44
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45 public LuanTable(Set set) {
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46 for( Object el : set ) {
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47 if( el != null )
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48 rawPut(el,Boolean.TRUE);
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49 }
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50 }
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51
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52 public LuanTable(LuanTable tbl) {
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53 if( tbl.map != null && !tbl.map.isEmpty() )
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54 this.map = new LinkedHashMap<Object,Object>(tbl.map);
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55 if( tbl.rawLength() > 0 )
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56 this.list = new ArrayList<Object>(tbl.list);
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57 this.metatable = tbl.metatable;
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58 }
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59
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60 @Override public LuanTable shallowClone() {
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61 return new LuanTable();
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62 }
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63
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64 @Override public void deepenClone(DeepCloneable dc,DeepCloner cloner) {
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65 LuanTable clone = (LuanTable)dc;
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66 if( map != null ) {
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67 clone.map = newMap();
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68 for( Object stupid : map.entrySet() ) {
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69 Map.Entry entry = (Map.Entry)stupid;
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70 clone.map.put( cloner.get(entry.getKey()), cloner.get(entry.getValue()) );
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71 }
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72 }
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73 if( list != null ) {
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74 clone.list = new ArrayList<Object>();
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75 for( Object obj : list ) {
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76 clone.list.add( cloner.get(obj) );
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77 }
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78 }
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79 if( metatable != null )
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80 clone.metatable = (LuanTable)cloner.get(metatable);
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81 clone.hasJava = hasJava;
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82 }
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83
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84 public boolean isList() {
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85 return map==null || map.isEmpty();
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86 }
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87
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88 public List<Object> asList() {
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89 return list!=null ? list : Collections.emptyList();
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90 }
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91
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92 public String toString(LuanState luan) throws LuanException {
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93 Object h = getHandler("__to_string");
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94 if( h == null )
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95 return rawToString();
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96 if( h instanceof LuanMeta ) {
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97 LuanMeta meta = (LuanMeta)h;
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98 return meta.__to_string(luan,this);
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99 }
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100 LuanFunction fn = luan.checkFunction(h);
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101 return luan.checkString( Luan.first( luan.call(fn,"__to_string",new Object[]{this}) ) );
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102 }
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103
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104 public String rawToString() {
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105 return "table: " + Integer.toHexString(hashCode());
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106 }
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107
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108 public Object get(LuanState luan,Object key) throws LuanException {
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109 Object value = rawGet(key);
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110 if( value != null )
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111 return value;
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112 Object h = getHandler("__index");
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113 if( h==null )
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114 return null;
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115 if( h instanceof LuanFunction ) {
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116 LuanFunction fn = (LuanFunction)h;
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117 return Luan.first(luan.call(fn,"__index",new Object[]{this,key}));
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118 }
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119 if( h instanceof LuanMeta ) {
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120 LuanMeta meta = (LuanMeta)h;
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121 return meta.__index(luan,this,key);
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122 }
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123 if( h instanceof LuanTable ) {
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124 LuanTable tbl = (LuanTable)h;
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125 return tbl.get(luan,key);
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126 }
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127 throw luan.exception("invalid type "+Luan.type(h)+" for metamethod __index");
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128 }
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129
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130 public Object rawGet(Object key) {
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131 if( list != null ) {
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132 Integer iT = Luan.asInteger(key);
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133 if( iT != null ) {
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134 int i = iT - 1;
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135 if( i>=0 && i<list.size() )
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136 return list.get(i);
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137 }
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138 }
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139 if( map==null )
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140 return null;
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141 return map.get(key);
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142 }
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143
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144 public void put(LuanState luan,Object key,Object value) throws LuanException {
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145 Object h = getHandler("__new_index");
427
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146 if( h==null || rawGet(key)!=null ) {
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147 rawPut(key,value);
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148 return;
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149 }
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150 if( h instanceof LuanFunction ) {
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151 LuanFunction fn = (LuanFunction)h;
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152 luan.call(fn,"__new_index",new Object[]{this,key,value});
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153 return;
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154 }
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155 if( h instanceof LuanMeta ) {
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156 LuanMeta meta = (LuanMeta)h;
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157 meta.__new_index(luan,this,key,value);
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158 return;
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159 }
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160 if( h instanceof LuanTable ) {
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161 LuanTable tbl = (LuanTable)h;
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162 tbl.put(luan,key,value);
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163 return;
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164 }
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165 throw luan.exception("invalid type "+Luan.type(h)+" for metamethod __new_index");
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166 }
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167
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168 public void rawPut(Object key,Object val) {
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169 Integer iT = Luan.asInteger(key);
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170 if( iT != null ) {
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171 int i = iT - 1;
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172 if( list != null || i == 0 ) {
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173 if( i == list().size() ) {
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174 if( val != null ) {
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175 list.add(val);
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176 mapToList();
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177 }
224
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178 return;
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179 } else if( i>=0 && i<list.size() ) {
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180 list.set(i,val);
118
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181 if( val == null ) {
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182 listToMap(i);
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183 }
224
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184 return;
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185 }
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186 }
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187 }
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188 if( map==null ) {
284
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189 map = newMap();
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190 }
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191 if( key instanceof Number && !(key instanceof Double) ) {
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192 Number n = (Number)key;
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193 key = Double.valueOf(n.doubleValue());
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194 }
1
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195 if( val == null ) {
224
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196 map.remove(key);
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197 } else {
224
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198 map.put(key,val);
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199 }
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200 }
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201
47
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202 private void mapToList() {
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203 if( map != null ) {
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204 while(true) {
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205 Object v = map.remove(Double.valueOf(list.size()+1));
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206 if( v == null )
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207 break;
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208 list.add(v);
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209 }
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210 }
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211 }
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212
118
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213 private void listToMap(int from) {
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214 if( list != null ) {
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215 while( list.size() > from ) {
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216 int i = list.size() - 1;
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217 Object v = list.remove(i);
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218 if( v != null ) {
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219 if( map==null )
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220 map = newMap();
118
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221 map.put(i+1,v);
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222 }
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223 }
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224 }
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225 }
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226
47
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227 private List<Object> list() {
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228 if( list == null ) {
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229 list = new ArrayList<Object>();
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230 mapToList();
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231 }
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232 return list;
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233 }
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234
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235 public void rawInsert(int pos,Object value) {
108
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236 if( value==null )
222
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diff changeset
237 throw new IllegalArgumentException("can't insert a nil value");
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238 list().add(pos-1,value);
108
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diff changeset
239 mapToList();
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240 }
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241
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242 public Object rawRemove(int pos) {
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243 return list().remove(pos-1);
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244 }
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245
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246 public void rawSort(Comparator<Object> cmp) {
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247 Collections.sort(list(),cmp);
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248 }
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249
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250 public int length(LuanState luan) throws LuanException {
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251 Object h = getHandler("__len");
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252 if( h != null ) {
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253 LuanFunction fn = luan.checkFunction(h);
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254 return (Integer)Luan.first(luan.call(fn,"__len",new Object[]{this}));
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255 }
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256 return rawLength();
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257 }
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258
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259 public int rawLength() {
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260 return list==null ? 0 : list.size();
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261 }
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262
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263 public Iterable<Map.Entry<Object,Object>> iterable(LuanState luan) throws LuanException {
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264 final Iterator<Map.Entry<Object,Object>> iter = iterator(luan);
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265 return new Iterable<Map.Entry<Object,Object>>() {
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266 public Iterator<Map.Entry<Object,Object>> iterator() {
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267 return iter;
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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 public Iterable<Map.Entry<Object,Object>> rawIterable() throws LuanException {
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273 final Iterator<Map.Entry<Object,Object>> iter = rawIterator();
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274 return new Iterable<Map.Entry<Object,Object>>() {
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275 public Iterator<Map.Entry<Object,Object>> iterator() {
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276 return iter;
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277 }
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278 };
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279 }
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280
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281 public Iterator<Map.Entry<Object,Object>> iterator(final LuanState luan) throws LuanException {
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282 if( getHandler("__pairs") == null )
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283 return rawIterator();
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284 final LuanFunction fn = pairs(luan);
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285 return new Iterator<Map.Entry<Object,Object>>() {
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286 private Map.Entry<Object,Object> next = getNext();
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287
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288 private Map.Entry<Object,Object> getNext() {
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289 try {
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290 Object obj = luan.call(fn);
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291 if( obj==null )
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292 return null;
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293 Object[] a = (Object[])obj;
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294 if( a.length == 0 || a[0]==null )
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295 return null;
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296 return new AbstractMap.SimpleEntry<Object,Object>(a[0],a[1]);
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297 } catch(LuanException e) {
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298 throw new LuanRuntimeException(e);
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299 }
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300 }
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301
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302 public boolean hasNext() {
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303 return next != null;
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304 }
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305
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306 public Map.Entry<Object,Object> next() {
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307 Map.Entry<Object,Object> rtn = next;
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308 next = getNext();
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309 return rtn;
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310 }
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311
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312 public void remove() {
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313 throw new UnsupportedOperationException();
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314 }
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315 };
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316 }
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317
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318 public LuanFunction pairs(final LuanState luan) throws LuanException {
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319 Object h = getHandler("__pairs");
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320 if( h != null ) {
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321 if( h instanceof LuanFunction ) {
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322 Object obj = Luan.first(luan.call((LuanFunction)h,"__pairs",new Object[]{this}));
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323 if( !(obj instanceof LuanFunction) )
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324 throw luan.exception( "metamethod __pairs should return function but returned " + Luan.type(obj) );
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325 return (LuanFunction)obj;
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326 }
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327 if( h instanceof LuanMeta ) {
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328 LuanMeta meta = (LuanMeta)h;
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329 return meta.__pairs(luan,this);
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330 }
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331 throw luan.exception( "invalid type of metamethod __pairs: " + Luan.type(h) );
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332 }
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333 return rawPairs();
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334 }
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335
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336 private LuanFunction rawPairs() {
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337 return new LuanFunction() {
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338 final Iterator<Map.Entry<Object,Object>> iter = rawIterator();
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339
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340 @Override public Object[] call(LuanState luan,Object[] args) {
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341 if( !iter.hasNext() )
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342 return LuanFunction.NOTHING;
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343 Map.Entry<Object,Object> entry = iter.next();
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344 return new Object[]{entry.getKey(),entry.getValue()};
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345 }
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346 };
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347 }
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348
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349 public Iterator<Map.Entry<Object,Object>> rawIterator() {
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350 if( list == null ) {
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351 if( map == null )
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352 return Collections.<Map.Entry<Object,Object>>emptyList().iterator();
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353 return map.entrySet().iterator();
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354 }
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355 if( map == null )
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356 return listIterator();
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357 return new Iterator<Map.Entry<Object,Object>>() {
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358 Iterator<Map.Entry<Object,Object>> iter = listIterator();
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359 boolean isList = true;
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360
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361 public boolean hasNext() {
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362 boolean b = iter.hasNext();
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363 if( !b && isList ) {
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364 iter = map.entrySet().iterator();
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365 isList = false;
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366 b = iter.hasNext();
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367 }
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368 return b;
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369 }
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370
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371 public Map.Entry<Object,Object> next() {
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372 return iter.next();
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373 }
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374
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375 public void remove() {
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376 throw new UnsupportedOperationException();
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377 }
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378 };
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379 }
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380
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381 private Iterator<Map.Entry<Object,Object>> listIterator() {
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382 if( list == null )
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383 return Collections.<Map.Entry<Object,Object>>emptyList().iterator();
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384 final ListIterator iter = list.listIterator();
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385 return new Iterator<Map.Entry<Object,Object>>() {
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386
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387 public boolean hasNext() {
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388 return iter.hasNext();
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389 }
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390
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391 public Map.Entry<Object,Object> next() {
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392 Integer key = iter.nextIndex()+1;
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393 return new AbstractMap.SimpleEntry<Object,Object>(key,iter.next());
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394 }
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395
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396 public void remove() {
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397 throw new UnsupportedOperationException();
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398 }
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399 };
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400 }
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401
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402 public LuanTable rawSubList(int from,int to) {
408
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403 LuanTable tbl = shallowClone();
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404 tbl.list = new ArrayList<Object>(list().subList(from-1,to-1));
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405 return tbl;
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406 }
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407
408
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408 public LuanTable getMetatable() {
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409 return metatable;
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410 }
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411
408
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412 public void setMetatable(LuanTable metatable) {
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413 this.metatable = metatable;
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414 }
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415
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416 public Object getHandler(String op) {
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417 return metatable==null ? null : metatable.rawGet(op);
419
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418 }
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419
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420 public boolean hasJava() {
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421 return hasJava;
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422 }
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423
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424 public void setJava() {
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425 hasJava = true;
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426 }
406
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427
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428 private Map<Object,Object> newMap() {
406
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429 return new LinkedHashMap<Object,Object>();
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430 }
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431
432
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432 public boolean isSet(LuanState luan) throws LuanException {
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433 for( Map.Entry<Object,Object> entry : iterable(luan) ) {
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434 if( !entry.getValue().equals(Boolean.TRUE) )
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435 return false;
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436 }
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437 return true;
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438 }
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439
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440 public Set<Object> asSet(LuanState luan) throws LuanException {
406
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441 Set<Object> set = new HashSet<Object>();
432
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442 for( Map.Entry<Object,Object> entry : iterable(luan) ) {
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443 set.add(entry.getKey());
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444 }
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445 return set;
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446 }
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447
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448 public Map<Object,Object> asMap(LuanState luan) throws LuanException {
406
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449 Map<Object,Object> map = newMap();
432
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450 for( Map.Entry<Object,Object> entry : iterable(luan) ) {
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451 map.put(entry.getKey(),entry.getValue());
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452 }
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453 return map;
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454 }
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455
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456 public void rawClear() {
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457 map = null;
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458 list = null;
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459 }
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460
1
2df768b926aa start Luan
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461 }