Mercurial Hosting > luan
annotate src/luan/LuanTable.java @ 1420:225808b90cee
options handling
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Sat, 26 Oct 2019 22:21:09 -0600 |
parents | 2024d23ddd64 |
children | 851b9a48cc44 |
rev | line source |
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1
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1 package luan; |
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2 |
27
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3 import java.util.Iterator; |
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4 import java.util.ListIterator; |
1
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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; |
1
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14 |
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15 |
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16 public final class LuanTable implements LuanCloneable { |
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17 private Luan luan; |
434 | 18 private Map map = null; |
19 private List list = null; | |
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20 private LuanTable metatable = null; |
1330 | 21 public LuanClosure closure; |
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22 private LuanCloner cloner; |
1330 | 23 private String security = null; |
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24 |
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25 public LuanTable(Luan luan) { |
1267 | 26 this.luan = luan; |
27 } | |
364 | 28 |
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29 public LuanTable(Luan luan,List list){ |
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30 this.luan = luan; |
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31 int n = list.size(); |
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32 for( int i=0; i<n; i++ ) { |
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33 Object val = list.get(i); |
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34 if( val != null ) |
1330 | 35 rawPut2(i+1,val); |
432
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36 } |
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37 } |
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38 |
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39 public LuanTable(Luan luan,Map map) { |
1267 | 40 this.luan = luan; |
434 | 41 for( Object stupid : map.entrySet() ) { |
42 Map.Entry entry = (Map.Entry)stupid; | |
432
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43 Object key = entry.getKey(); |
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44 Object value = entry.getValue(); |
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45 if( key != null && value != null ) |
1330 | 46 rawPut2(key,value); |
432
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47 } |
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48 } |
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49 |
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50 public LuanTable(Luan luan,Set set){ |
1267 | 51 this.luan = luan; |
432
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52 for( Object el : set ) { |
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53 if( el != null ) |
1330 | 54 rawPut2(el,Boolean.TRUE); |
118
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55 } |
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56 } |
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57 |
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58 public LuanTable(LuanTable tbl) { |
1267 | 59 this.luan = tbl.luan; |
425
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60 if( tbl.map != null && !tbl.map.isEmpty() ) |
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61 this.map = new LinkedHashMap<Object,Object>(tbl.map); |
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62 if( tbl.rawLength() > 0 ) |
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63 this.list = new ArrayList<Object>(tbl.list); |
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64 this.metatable = tbl.metatable; |
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65 } |
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66 |
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67 @Override public LuanTable shallowClone() { |
1267 | 68 return new LuanTable(luan); |
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69 } |
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70 |
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71 @Override public void deepenClone(LuanCloneable dc,LuanCloner cloner) { |
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72 check(); |
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73 LuanTable clone = (LuanTable)dc; |
1330 | 74 clone.security = security; |
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75 switch( cloner.type ) { |
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76 case COMPLETE: |
1335 | 77 completeClone(clone,cloner); |
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78 return; |
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79 case INCREMENTAL: |
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80 clone.cloner = cloner; |
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81 clone.map = map; |
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82 clone.list = list; |
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83 clone.metatable = metatable; |
1330 | 84 clone.closure = closure; |
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85 return; |
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86 } |
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87 } |
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88 |
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89 private void check() { |
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90 if( cloner != null ) { |
1335 | 91 completeClone(this,cloner); |
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92 cloner = null; |
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93 } |
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94 } |
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95 |
1335 | 96 public Luan luan() { |
97 check(); | |
98 return luan; | |
99 } | |
100 | |
101 private void completeClone(LuanTable clone,LuanCloner cloner) { | |
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102 clone.luan = (Luan)cloner.clone(luan); |
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103 if( map != null ) { |
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104 Map newMap = newMap(); |
434 | 105 for( Object stupid : map.entrySet() ) { |
106 Map.Entry entry = (Map.Entry)stupid; | |
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107 newMap.put( cloner.get(entry.getKey()), cloner.get(entry.getValue()) ); |
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108 } |
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109 clone.map = newMap; |
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110 } |
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111 if( list != null ) { |
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112 List newList = new ArrayList<Object>(); |
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113 for( Object obj : list ) { |
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114 newList.add(cloner.get(obj)); |
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115 } |
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116 clone.list = newList; |
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117 } |
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118 clone.metatable = (LuanTable)cloner.clone(metatable); |
1330 | 119 clone.closure = (LuanClosure)cloner.clone(closure); |
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120 } |
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121 |
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122 public boolean isList() { |
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123 return map==null || map.isEmpty(); |
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124 } |
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125 |
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126 public List<Object> asList() { |
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127 check(); |
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128 return list!=null ? list : Collections.emptyList(); |
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129 } |
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130 |
1189 | 131 public Map rawMap() { |
132 check(); | |
133 return map!=null ? map : Collections.emptyMap(); | |
134 } | |
135 | |
1267 | 136 public String toStringLuan() throws LuanException { |
137 Object h = getHandler("__to_string"); | |
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138 if( h == null ) |
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139 return rawToString(); |
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140 LuanFunction fn = Luan.checkFunction(h); |
1335 | 141 return Luan.checkString( Luan.first( fn.call(this) ) ); |
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142 } |
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143 |
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144 public String rawToString() { |
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145 return "table: " + Integer.toHexString(hashCode()); |
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146 } |
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147 |
1267 | 148 public Object get(Object key) throws LuanException { |
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149 Object value = rawGet(key); |
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150 if( value != null ) |
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151 return value; |
1267 | 152 Object h = getHandler("__index"); |
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153 if( h==null ) |
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154 return null; |
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155 if( h instanceof LuanFunction ) { |
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156 LuanFunction fn = (LuanFunction)h; |
1335 | 157 return Luan.first(fn.call(this,key)); |
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158 } |
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159 return luan.index(h,key); |
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160 } |
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161 |
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162 public Object rawGet(Object key) { |
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163 check(); |
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164 if( list != null ) { |
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165 Integer iT = Luan.asInteger(key); |
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166 if( iT != null ) { |
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167 int i = iT - 1; |
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168 if( i>=0 && i<list.size() ) |
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169 return list.get(i); |
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170 } |
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171 } |
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172 if( map==null ) |
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173 return null; |
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174 if( key instanceof Number && !(key instanceof Double) ) { |
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175 Number n = (Number)key; |
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176 key = Double.valueOf(n.doubleValue()); |
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177 } |
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178 return map.get(key); |
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179 } |
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180 |
1267 | 181 public void put(Object key,Object value) throws LuanException { |
182 Object h = getHandler("__new_index"); | |
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183 if( h==null || rawGet(key)!=null ) { |
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184 rawPut(key,value); |
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185 return; |
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186 } |
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187 if( h instanceof LuanFunction ) { |
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188 LuanFunction fn = (LuanFunction)h; |
1335 | 189 fn.call(this,key,value); |
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190 return; |
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191 } |
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192 if( h instanceof LuanTable ) { |
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193 LuanTable tbl = (LuanTable)h; |
1267 | 194 tbl.put(key,value); |
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195 return; |
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196 } |
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197 throw new LuanException("invalid type "+Luan.type(h)+" for metamethod __new_index"); |
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198 } |
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199 |
1330 | 200 public void rawPut(Object key,Object val) throws LuanException { |
201 if( security != null ) | |
202 Luan.checkSecurity(luan,"table",security,"put",key,val); | |
203 rawPut2(key,val); | |
204 } | |
205 | |
206 private void rawPut2(Object key,Object val) { | |
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207 check(); |
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208 Integer iT = Luan.asInteger(key); |
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209 if( iT != null ) { |
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210 int i = iT - 1; |
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211 if( list != null || i == 0 ) { |
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212 if( i == list().size() ) { |
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213 if( val != null ) { |
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214 list.add(val); |
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215 mapToList(); |
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216 } |
224
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217 return; |
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218 } else if( i>=0 && i<list.size() ) { |
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219 list.set(i,val); |
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220 if( val == null ) { |
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221 listToMap(i); |
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222 } |
224
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223 return; |
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224 } |
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225 } |
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226 } |
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227 if( key instanceof Number && !(key instanceof Double) ) { |
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228 Number n = (Number)key; |
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229 key = Double.valueOf(n.doubleValue()); |
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230 } |
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231 if( val == null ) { |
1420 | 232 if( map!=null ) |
233 map.remove(key); | |
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234 } else { |
1420 | 235 if( map==null ) |
236 map = newMap(); | |
224
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237 map.put(key,val); |
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238 } |
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239 } |
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240 |
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241 private void mapToList() { |
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242 if( map != null ) { |
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243 while(true) { |
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244 Object v = map.remove(Double.valueOf(list.size()+1)); |
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245 if( v == null ) |
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246 break; |
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247 list.add(v); |
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248 } |
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249 } |
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250 } |
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251 |
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252 private void listToMap(int from) { |
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253 if( list != null ) { |
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254 while( list.size() > from ) { |
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255 int i = list.size() - 1; |
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256 Object v = list.remove(i); |
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257 if( v != null ) { |
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258 if( map==null ) |
284
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259 map = newMap(); |
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260 map.put(i+1,v); |
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261 } |
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262 } |
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263 } |
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264 } |
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265 |
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266 private List<Object> list() { |
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267 if( list == null ) { |
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268 list = new ArrayList<Object>(); |
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269 mapToList(); |
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270 } |
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271 return list; |
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272 } |
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273 |
431 | 274 public void rawInsert(int pos,Object value) { |
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275 check(); |
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276 if( value==null ) |
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277 throw new IllegalArgumentException("can't insert a nil value"); |
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278 list().add(pos-1,value); |
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279 mapToList(); |
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280 } |
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281 |
1420 | 282 public Object removeFromList(int pos) { |
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283 check(); |
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284 return list().remove(pos-1); |
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285 } |
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286 |
431 | 287 public void rawSort(Comparator<Object> cmp) { |
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288 check(); |
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289 Collections.sort(list(),cmp); |
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290 } |
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291 |
1267 | 292 public int length() throws LuanException { |
293 Object h = getHandler("__len"); | |
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294 if( h != null ) { |
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295 LuanFunction fn = Luan.checkFunction(h); |
1335 | 296 return (Integer)Luan.first(fn.call(this)); |
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297 } |
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298 return rawLength(); |
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299 } |
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300 |
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301 public int rawLength() { |
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302 check(); |
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303 return list==null ? 0 : list.size(); |
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304 } |
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305 |
1267 | 306 public Iterable<Map.Entry> iterable() throws LuanException { |
307 final Iterator<Map.Entry> iter = iterator(); | |
1113 | 308 return new Iterable<Map.Entry>() { |
309 public Iterator<Map.Entry> iterator() { | |
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310 return iter; |
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311 } |
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312 }; |
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313 } |
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314 |
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315 public Iterable<Map.Entry> rawIterable() { |
1113 | 316 final Iterator<Map.Entry> iter = rawIterator(); |
317 return new Iterable<Map.Entry>() { | |
318 public Iterator<Map.Entry> iterator() { | |
498
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319 return iter; |
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320 } |
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321 }; |
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322 } |
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323 |
1267 | 324 public Iterator<Map.Entry> iterator() throws LuanException { |
325 if( getHandler("__pairs") == null ) | |
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326 return rawIterator(); |
1267 | 327 final LuanFunction fn = pairs(); |
1113 | 328 return new Iterator<Map.Entry>() { |
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329 private Map.Entry<Object,Object> next = getNext(); |
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330 |
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331 private Map.Entry<Object,Object> getNext() { |
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332 try { |
1335 | 333 Object obj = fn.call(); |
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334 if( obj==null ) |
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335 return null; |
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336 Object[] a = (Object[])obj; |
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337 if( a.length == 0 || a[0]==null ) |
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338 return null; |
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339 return new AbstractMap.SimpleEntry<Object,Object>(a[0],a[1]); |
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340 } catch(LuanException e) { |
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341 throw new LuanRuntimeException(e); |
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342 } |
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343 } |
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344 |
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345 public boolean hasNext() { |
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346 return next != null; |
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347 } |
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348 |
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349 public Map.Entry<Object,Object> next() { |
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350 Map.Entry<Object,Object> rtn = next; |
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351 next = getNext(); |
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352 return rtn; |
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353 } |
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354 |
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355 public void remove() { |
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356 throw new UnsupportedOperationException(); |
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357 } |
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358 }; |
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359 } |
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360 |
1267 | 361 public LuanFunction pairs() throws LuanException { |
362 Object h = getHandler("__pairs"); | |
432
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363 if( h != null ) { |
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364 if( h instanceof LuanFunction ) { |
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365 LuanFunction fn = (LuanFunction)h; |
1335 | 366 Object obj = Luan.first(fn.call(this)); |
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367 if( !(obj instanceof LuanFunction) ) |
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368 throw new LuanException( "metamethod __pairs should return function but returned " + Luan.type(obj) ); |
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369 return (LuanFunction)obj; |
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370 } |
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371 throw new LuanException( "invalid type of metamethod __pairs: " + Luan.type(h) ); |
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372 } |
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373 return rawPairs(); |
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374 } |
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375 |
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376 private LuanFunction rawPairs() { |
1335 | 377 return new LuanFunction(false) { // ??? |
1113 | 378 final Iterator<Map.Entry> iter = rawIterator(); |
432
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379 |
1335 | 380 @Override public Object[] call(Object[] args) { |
432
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381 if( !iter.hasNext() ) |
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382 return LuanFunction.NOTHING; |
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383 Map.Entry<Object,Object> entry = iter.next(); |
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384 return new Object[]{entry.getKey(),entry.getValue()}; |
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385 } |
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386 }; |
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387 } |
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388 |
1113 | 389 public Iterator<Map.Entry> rawIterator() { |
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390 check(); |
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391 if( list == null ) { |
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392 if( map == null ) |
1113 | 393 return Collections.<Map.Entry>emptyList().iterator(); |
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394 return map.entrySet().iterator(); |
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395 } |
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396 if( map == null ) |
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397 return listIterator(); |
1113 | 398 return new Iterator<Map.Entry>() { |
399 Iterator<Map.Entry> iter = listIterator(); | |
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400 boolean isList = true; |
432
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401 |
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402 public boolean hasNext() { |
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403 boolean b = iter.hasNext(); |
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404 if( !b && isList ) { |
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405 iter = map.entrySet().iterator(); |
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406 isList = false; |
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407 b = iter.hasNext(); |
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408 } |
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409 return b; |
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410 } |
432
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411 |
44
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412 public Map.Entry<Object,Object> next() { |
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413 return iter.next(); |
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414 } |
432
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415 |
44
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416 public void remove() { |
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417 throw new UnsupportedOperationException(); |
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418 } |
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419 }; |
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420 } |
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421 |
1113 | 422 private Iterator<Map.Entry> listIterator() { |
44
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423 if( list == null ) |
1113 | 424 return Collections.<Map.Entry>emptyList().iterator(); |
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425 final ListIterator iter = list.listIterator(); |
1113 | 426 return new Iterator<Map.Entry>() { |
432
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427 |
44
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428 public boolean hasNext() { |
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429 return iter.hasNext(); |
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430 } |
432
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431 |
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432 public Map.Entry<Object,Object> next() { |
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433 Integer key = iter.nextIndex()+1; |
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434 return new AbstractMap.SimpleEntry<Object,Object>(key,iter.next()); |
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435 } |
432
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436 |
44
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437 public void remove() { |
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438 throw new UnsupportedOperationException(); |
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439 } |
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440 }; |
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441 } |
221
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442 |
431 | 443 public LuanTable rawSubList(int from,int to) { |
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444 check(); |
1267 | 445 LuanTable tbl = new LuanTable(luan); |
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446 tbl.list = new ArrayList<Object>(list().subList(from-1,to-1)); |
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447 return tbl; |
27
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448 } |
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449 |
408
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450 public LuanTable getMetatable() { |
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451 check(); |
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452 return metatable; |
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453 } |
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454 |
1330 | 455 public void setMetatable(LuanTable metatable) throws LuanException { |
456 if( security != null ) | |
457 Luan.checkSecurity(luan,"table",security,"set_metatable",metatable); | |
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458 check(); |
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459 this.metatable = metatable; |
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460 } |
300
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461 |
1267 | 462 public Object getHandler(String op) throws LuanException { |
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463 check(); |
1267 | 464 return metatable==null ? null : metatable.get(op); |
419
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465 } |
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466 |
431 | 467 private Map<Object,Object> newMap() { |
406
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468 return new LinkedHashMap<Object,Object>(); |
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469 } |
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470 |
1267 | 471 public boolean isSet() throws LuanException { |
472 for( Map.Entry<Object,Object> entry : iterable() ) { | |
406
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473 if( !entry.getValue().equals(Boolean.TRUE) ) |
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474 return false; |
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475 } |
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476 return true; |
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477 } |
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478 |
1267 | 479 public Set<Object> asSet() throws LuanException { |
406
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480 Set<Object> set = new HashSet<Object>(); |
1267 | 481 for( Map.Entry<Object,Object> entry : iterable() ) { |
406
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482 set.add(entry.getKey()); |
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483 } |
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484 return set; |
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485 } |
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486 |
1267 | 487 public Map<Object,Object> asMap() throws LuanException { |
406
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488 Map<Object,Object> map = newMap(); |
1267 | 489 for( Map.Entry<Object,Object> entry : iterable() ) { |
406
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490 map.put(entry.getKey(),entry.getValue()); |
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491 } |
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492 return map; |
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493 } |
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494 |
497
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495 public void rawClear() { |
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496 check(); |
497
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497 map = null; |
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498 list = null; |
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499 } |
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500 |
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501 public int hashValue() { |
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502 int n = 99; |
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503 if( map != null ) |
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504 n ^= map.hashCode(); |
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505 if( list != null ) |
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506 n ^= list.hashCode(); |
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507 return n; |
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508 } |
1100
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509 |
1420 | 510 public boolean isEmpty() { |
1100
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511 return (map==null || map.isEmpty()) && (list==null || list.isEmpty()); |
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512 } |
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513 |
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514 public int rawSize() { |
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515 int n = 0; |
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516 if( map != null ) |
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517 n += map.size(); |
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518 if( list != null ) |
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519 n += list.size(); |
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520 return n; |
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521 } |
1267 | 522 |
1420 | 523 public Object remove(Object key) { |
524 Object old = rawGet(key); | |
525 rawPut2(key,null); | |
526 return old; | |
527 } | |
528 | |
1267 | 529 protected void finalize() throws Throwable { |
530 Object h = getHandler("__gc"); | |
531 if( h != null ) { | |
532 LuanFunction fn = Luan.checkFunction(h); | |
1335 | 533 fn.call(this); |
1267 | 534 } |
535 super.finalize(); | |
536 } | |
537 | |
1335 | 538 public LuanFunction fn(String fnName) throws LuanException { |
539 return (LuanFunction)get(fnName); | |
1283
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540 } |
1330 | 541 |
542 public static void setSecurity(LuanTable tbl,String security) { | |
543 tbl.security = security; | |
544 } | |
1
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start Luan
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545 } |