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annotate core/src/luan/LuanTable.java @ 539:473e456444ff

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Remove object-oriented primitive methods for string and binary
author Franklin Schmidt <fschmidt@gmail.com>
date Mon, 01 Jun 2015 17:53:55 -0600
parents 8e51d6071b67
children f1601a4ce1aa
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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1 package luan;
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3 import java.util.Iterator;
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4 import java.util.ListIterator;
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5 import java.util.Map;
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6 import java.util.AbstractMap;
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7 import java.util.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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16 import luan.modules.StringLuan;
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17 import luan.modules.BinaryLuan;
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18 import luan.modules.JavaLuan;
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20
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21 public final class LuanTable implements DeepCloneable {
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22 private Map map = null;
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23 private List list = null;
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24 private LuanTable metatable = null;
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25 public boolean hasJava = false;
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26
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27 public LuanTable() {}
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28
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29 public LuanTable(List list) {
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30 int n = list.size();
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31 for( int i=0; i<n; i++ ) {
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32 Object val = list.get(i);
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33 if( val != null )
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34 rawPut(i+1,val);
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35 }
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36 }
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37
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38 public LuanTable(Map map) {
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39 for( Object stupid : map.entrySet() ) {
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40 Map.Entry entry = (Map.Entry)stupid;
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41 Object key = entry.getKey();
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42 Object value = entry.getValue();
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43 if( key != null && value != null )
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44 rawPut(key,value);
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45 }
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46 }
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47
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48 public LuanTable(Set set) {
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49 for( Object el : set ) {
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50 if( el != null )
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51 rawPut(el,Boolean.TRUE);
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52 }
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53 }
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54
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55 public LuanTable(LuanTable tbl) {
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56 if( tbl.map != null && !tbl.map.isEmpty() )
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57 this.map = new LinkedHashMap<Object,Object>(tbl.map);
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58 if( tbl.rawLength() > 0 )
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59 this.list = new ArrayList<Object>(tbl.list);
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60 this.metatable = tbl.metatable;
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61 }
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62
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63 @Override public LuanTable shallowClone() {
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64 return new LuanTable();
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65 }
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66
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67 @Override public void deepenClone(DeepCloneable dc,DeepCloner cloner) {
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68 LuanTable clone = (LuanTable)dc;
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69 if( map != null ) {
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70 clone.map = newMap();
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71 for( Object stupid : map.entrySet() ) {
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72 Map.Entry entry = (Map.Entry)stupid;
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73 clone.map.put( cloner.get(entry.getKey()), cloner.get(entry.getValue()) );
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74 }
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75 }
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76 if( list != null ) {
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77 clone.list = new ArrayList<Object>();
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78 for( Object obj : list ) {
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79 clone.list.add( cloner.get(obj) );
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80 }
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81 }
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82 if( metatable != null )
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83 clone.metatable = (LuanTable)cloner.get(metatable);
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84 clone.hasJava = hasJava;
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85 }
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86
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87 public boolean isList() {
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88 return map==null || map.isEmpty();
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89 }
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90
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91 public List<Object> asList() {
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92 return list!=null ? list : Collections.emptyList();
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93 }
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94
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95 public String toString(LuanState luan) throws LuanException {
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96 Object h = getHandler("__to_string");
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97 if( h == null )
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98 return rawToString();
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99 if( h instanceof LuanMeta ) {
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100 LuanMeta meta = (LuanMeta)h;
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101 return meta.__to_string(luan,this);
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102 }
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103 LuanFunction fn = luan.checkFunction(h);
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104 return luan.checkString( Luan.first( luan.call(fn,"__to_string",new Object[]{this}) ) );
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105 }
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106
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107 public String rawToString() {
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108 return "table: " + Integer.toHexString(hashCode());
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109 }
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110
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111 public Object get(LuanState luan,Object key) throws LuanException {
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112 Object value = rawGet(key);
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113 if( value != null )
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114 return value;
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115 Object h = getHandler("__index");
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116 if( h==null )
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117 return null;
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118 if( h instanceof LuanFunction ) {
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119 LuanFunction fn = (LuanFunction)h;
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120 return Luan.first(luan.call(fn,"__index",new Object[]{this,key}));
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121 }
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122 if( h instanceof LuanMeta ) {
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123 LuanMeta meta = (LuanMeta)h;
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124 return meta.__index(luan,this,key);
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125 }
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126 return index(luan.JAVA,h,key);
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127 }
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128
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129 public static Object index(LuanBit bit,Object obj,Object key) throws LuanException {
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130 LuanState luan = bit.luan;
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131 if( obj instanceof LuanTable ) {
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132 LuanTable tbl = (LuanTable)obj;
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133 return tbl.get(luan,key);
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134 }
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135 if( obj != null && luan.hasJava() )
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136 return JavaLuan.__index(bit,obj,key,false);
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137 else if( bit.el==null )
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138 throw bit.exception( "attempt to index a " + Luan.type(obj) + " value" );
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139 else
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140 throw bit.exception( "attempt to index a " + Luan.type(obj) + " value in '"+bit.el.text()+"'" );
426
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141 }
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142
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143 public Object rawGet(Object key) {
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144 if( list != null ) {
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145 Integer iT = Luan.asInteger(key);
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146 if( iT != null ) {
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147 int i = iT - 1;
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148 if( i>=0 && i<list.size() )
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149 return list.get(i);
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150 }
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151 }
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152 if( map==null )
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153 return null;
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154 if( key instanceof Number && !(key instanceof Double) ) {
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155 Number n = (Number)key;
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156 key = Double.valueOf(n.doubleValue());
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157 }
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158 return map.get(key);
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159 }
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160
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161 public void put(LuanState luan,Object key,Object value) throws LuanException {
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162 Object h = getHandler("__new_index");
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163 if( h==null || rawGet(key)!=null ) {
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164 rawPut(key,value);
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165 return;
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166 }
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167 if( h instanceof LuanFunction ) {
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168 LuanFunction fn = (LuanFunction)h;
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169 luan.call(fn,"__new_index",new Object[]{this,key,value});
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170 return;
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171 }
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172 if( h instanceof LuanMeta ) {
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173 LuanMeta meta = (LuanMeta)h;
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174 meta.__new_index(luan,this,key,value);
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175 return;
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176 }
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177 if( h instanceof LuanTable ) {
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178 LuanTable tbl = (LuanTable)h;
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179 tbl.put(luan,key,value);
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180 return;
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181 }
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182 throw luan.exception("invalid type "+Luan.type(h)+" for metamethod __new_index");
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183 }
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184
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185 public void rawPut(Object key,Object val) {
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186 Integer iT = Luan.asInteger(key);
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187 if( iT != null ) {
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188 int i = iT - 1;
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189 if( list != null || i == 0 ) {
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190 if( i == list().size() ) {
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191 if( val != null ) {
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192 list.add(val);
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193 mapToList();
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194 }
224
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195 return;
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196 } else if( i>=0 && i<list.size() ) {
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197 list.set(i,val);
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198 if( val == null ) {
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199 listToMap(i);
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200 }
224
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201 return;
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202 }
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203 }
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204 }
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205 if( map==null )
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206 map = newMap();
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207 if( key instanceof Number && !(key instanceof Double) ) {
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208 Number n = (Number)key;
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209 key = Double.valueOf(n.doubleValue());
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210 }
1
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211 if( val == null ) {
224
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212 map.remove(key);
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213 } else {
224
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214 map.put(key,val);
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215 }
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216 }
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217
47
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218 private void mapToList() {
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219 if( map != null ) {
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220 while(true) {
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221 Object v = map.remove(Double.valueOf(list.size()+1));
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222 if( v == null )
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223 break;
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224 list.add(v);
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225 }
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226 }
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227 }
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228
118
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229 private void listToMap(int from) {
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230 if( list != null ) {
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231 while( list.size() > from ) {
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232 int i = list.size() - 1;
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233 Object v = list.remove(i);
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234 if( v != null ) {
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235 if( map==null )
284
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diff changeset
236 map = newMap();
118
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237 map.put(i+1,v);
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238 }
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239 }
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240 }
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241 }
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242
47
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diff changeset
243 private List<Object> list() {
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244 if( list == null ) {
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245 list = new ArrayList<Object>();
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diff changeset
246 mapToList();
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247 }
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248 return list;
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249 }
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250
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251 public void rawInsert(int pos,Object value) {
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252 if( value==null )
222
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253 throw new IllegalArgumentException("can't insert a nil value");
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254 list().add(pos-1,value);
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255 mapToList();
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256 }
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257
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258 public Object rawRemove(int pos) {
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259 return list().remove(pos-1);
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260 }
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261
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262 public void rawSort(Comparator<Object> cmp) {
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263 Collections.sort(list(),cmp);
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264 }
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265
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266 public int length(LuanState luan) throws LuanException {
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267 Object h = getHandler("__len");
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268 if( h != null ) {
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269 LuanFunction fn = luan.checkFunction(h);
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270 return (Integer)Luan.first(luan.call(fn,"__len",new Object[]{this}));
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271 }
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272 return rawLength();
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273 }
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274
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275 public int rawLength() {
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276 return list==null ? 0 : list.size();
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277 }
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278
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279 public Iterable<Map.Entry<Object,Object>> iterable(LuanState luan) throws LuanException {
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280 final Iterator<Map.Entry<Object,Object>> iter = iterator(luan);
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281 return new Iterable<Map.Entry<Object,Object>>() {
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282 public Iterator<Map.Entry<Object,Object>> iterator() {
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283 return iter;
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284 }
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285 };
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286 }
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287
498
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288 public Iterable<Map.Entry<Object,Object>> rawIterable() throws LuanException {
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289 final Iterator<Map.Entry<Object,Object>> iter = rawIterator();
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290 return new Iterable<Map.Entry<Object,Object>>() {
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291 public Iterator<Map.Entry<Object,Object>> iterator() {
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292 return iter;
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293 }
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294 };
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295 }
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296
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297 public Iterator<Map.Entry<Object,Object>> iterator(final LuanState luan) throws LuanException {
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298 if( getHandler("__pairs") == null )
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299 return rawIterator();
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300 final LuanFunction fn = pairs(luan);
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301 return new Iterator<Map.Entry<Object,Object>>() {
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302 private Map.Entry<Object,Object> next = getNext();
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303
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304 private Map.Entry<Object,Object> getNext() {
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305 try {
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306 Object obj = luan.call(fn);
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307 if( obj==null )
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308 return null;
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309 Object[] a = (Object[])obj;
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310 if( a.length == 0 || a[0]==null )
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311 return null;
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312 return new AbstractMap.SimpleEntry<Object,Object>(a[0],a[1]);
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313 } catch(LuanException e) {
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314 throw new LuanRuntimeException(e);
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315 }
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316 }
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317
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318 public boolean hasNext() {
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319 return next != null;
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320 }
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321
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322 public Map.Entry<Object,Object> next() {
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323 Map.Entry<Object,Object> rtn = next;
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324 next = getNext();
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325 return rtn;
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326 }
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327
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328 public void remove() {
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329 throw new UnsupportedOperationException();
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330 }
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331 };
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332 }
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333
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334 public LuanFunction pairs(final LuanState luan) throws LuanException {
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335 Object h = getHandler("__pairs");
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336 if( h != null ) {
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337 if( h instanceof LuanFunction ) {
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338 Object obj = Luan.first(luan.call((LuanFunction)h,"__pairs",new Object[]{this}));
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339 if( !(obj instanceof LuanFunction) )
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340 throw luan.exception( "metamethod __pairs should return function but returned " + Luan.type(obj) );
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341 return (LuanFunction)obj;
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342 }
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343 if( h instanceof LuanMeta ) {
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344 LuanMeta meta = (LuanMeta)h;
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345 return meta.__pairs(luan,this);
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346 }
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347 throw luan.exception( "invalid type of metamethod __pairs: " + Luan.type(h) );
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348 }
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349 return rawPairs();
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350 }
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351
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352 private LuanFunction rawPairs() {
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353 return new LuanFunction() {
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354 final Iterator<Map.Entry<Object,Object>> iter = rawIterator();
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355
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356 @Override public Object[] call(LuanState luan,Object[] args) {
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357 if( !iter.hasNext() )
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358 return LuanFunction.NOTHING;
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359 Map.Entry<Object,Object> entry = iter.next();
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360 return new Object[]{entry.getKey(),entry.getValue()};
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361 }
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362 };
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363 }
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364
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365 public Iterator<Map.Entry<Object,Object>> rawIterator() {
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366 if( list == null ) {
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367 if( map == null )
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368 return Collections.<Map.Entry<Object,Object>>emptyList().iterator();
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369 return map.entrySet().iterator();
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370 }
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371 if( map == null )
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372 return listIterator();
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373 return new Iterator<Map.Entry<Object,Object>>() {
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374 Iterator<Map.Entry<Object,Object>> iter = listIterator();
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375 boolean isList = true;
432
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376
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377 public boolean hasNext() {
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378 boolean b = iter.hasNext();
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379 if( !b && isList ) {
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380 iter = map.entrySet().iterator();
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381 isList = false;
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382 b = iter.hasNext();
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383 }
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384 return b;
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385 }
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386
44
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387 public Map.Entry<Object,Object> next() {
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388 return iter.next();
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389 }
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390
44
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391 public void remove() {
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392 throw new UnsupportedOperationException();
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393 }
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394 };
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395 }
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396
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397 private Iterator<Map.Entry<Object,Object>> listIterator() {
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398 if( list == null )
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399 return Collections.<Map.Entry<Object,Object>>emptyList().iterator();
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400 final ListIterator iter = list.listIterator();
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401 return new Iterator<Map.Entry<Object,Object>>() {
432
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402
44
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403 public boolean hasNext() {
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404 return iter.hasNext();
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405 }
432
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406
44
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407 public Map.Entry<Object,Object> next() {
432
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408 Integer key = iter.nextIndex()+1;
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409 return new AbstractMap.SimpleEntry<Object,Object>(key,iter.next());
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410 }
432
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411
44
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412 public void remove() {
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413 throw new UnsupportedOperationException();
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414 }
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415 };
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416 }
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417
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418 public LuanTable rawSubList(int from,int to) {
408
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419 LuanTable tbl = shallowClone();
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420 tbl.list = new ArrayList<Object>(list().subList(from-1,to-1));
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421 return tbl;
27
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422 }
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423
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424 public LuanTable getMetatable() {
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425 return metatable;
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426 }
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427
408
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428 public void setMetatable(LuanTable metatable) {
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429 this.metatable = metatable;
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430 }
300
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431
419
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432 public Object getHandler(String op) {
432
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433 return metatable==null ? null : metatable.rawGet(op);
419
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434 }
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435
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436 private Map<Object,Object> newMap() {
406
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437 return new LinkedHashMap<Object,Object>();
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438 }
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439
432
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440 public boolean isSet(LuanState luan) throws LuanException {
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441 for( Map.Entry<Object,Object> entry : iterable(luan) ) {
406
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442 if( !entry.getValue().equals(Boolean.TRUE) )
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443 return false;
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444 }
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445 return true;
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446 }
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447
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448 public Set<Object> asSet(LuanState luan) throws LuanException {
406
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449 Set<Object> set = new HashSet<Object>();
432
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450 for( Map.Entry<Object,Object> entry : iterable(luan) ) {
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451 set.add(entry.getKey());
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452 }
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453 return set;
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454 }
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455
432
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456 public Map<Object,Object> asMap(LuanState luan) throws LuanException {
406
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457 Map<Object,Object> map = newMap();
432
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458 for( Map.Entry<Object,Object> entry : iterable(luan) ) {
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459 map.put(entry.getKey(),entry.getValue());
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460 }
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461 return map;
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462 }
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463
497
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464 public void rawClear() {
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465 map = null;
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466 list = null;
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467 }
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468
1
2df768b926aa start Luan
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469 }