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annotate src/luan/LuanTable.java @ 1806:3b7a8f1cc887 default tip
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author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Thu, 09 May 2024 20:39:53 -0600 |
parents | 74f33278344f |
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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; |
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14 import java.util.ConcurrentModificationException; |
1
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15 |
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16 |
1578 | 17 public final class LuanTable implements LuanMutable { |
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; |
1561 | 22 private boolean immutable = false; |
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23 |
1562 | 24 public LuanTable() {} |
364 | 25 |
1562 | 26 public LuanTable(List list) { |
27 try { | |
28 list(); | |
29 int n = list.size(); | |
30 for( int i=0; i<n; i++ ) { | |
31 Object val = list.get(i); | |
32 if( val != null ) | |
33 rawPut(i+1,val); | |
34 } | |
35 } catch(LuanException e) { | |
36 throw new RuntimeException(e); | |
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37 } |
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38 } |
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39 |
1562 | 40 public LuanTable(Map map) { |
41 try { | |
42 for( Object stupid : map.entrySet() ) { | |
43 Map.Entry entry = (Map.Entry)stupid; | |
44 Object key = entry.getKey(); | |
45 Object value = entry.getValue(); | |
46 if( key != null && value != null ) | |
47 rawPut(key,value); | |
48 } | |
49 } catch(LuanException e) { | |
50 throw new RuntimeException(e); | |
432
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51 } |
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52 } |
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53 |
1562 | 54 public LuanTable(Set set) { |
55 try { | |
56 for( Object el : set ) { | |
57 if( el != null ) | |
58 rawPut(el,Boolean.TRUE); | |
59 } | |
60 } catch(LuanException e) { | |
61 throw new RuntimeException(e); | |
118
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62 } |
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63 } |
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64 |
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65 public LuanTable(LuanTable tbl) { |
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66 if( tbl.map != null && !tbl.map.isEmpty() ) |
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67 this.map = new LinkedHashMap<Object,Object>(tbl.map); |
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68 if( tbl.rawLength() > 0 ) |
425
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69 this.list = new ArrayList<Object>(tbl.list); |
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70 this.metatable = tbl.metatable; |
1746 | 71 this.closure = tbl.closure; |
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72 } |
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73 |
1578 | 74 @Override public boolean isImmutable() { |
75 return immutable; | |
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76 } |
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77 |
1578 | 78 @Override public void makeImmutable() { |
79 if(immutable) | |
80 return; | |
81 immutable = true; | |
82 LuanMutable.makeImmutable(map); | |
83 LuanMutable.makeImmutable(list); | |
84 LuanMutable.makeImmutable(metatable); | |
85 LuanMutable.makeImmutable(closure); | |
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86 } |
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87 |
1578 | 88 private void checkMutable() throws LuanException { |
89 if( immutable ) | |
90 throw new LuanException("table is immutable"); | |
1561 | 91 } |
92 | |
408
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93 public boolean isList() { |
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94 return map==null || map.isEmpty(); |
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95 } |
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96 |
1495 | 97 public boolean isMap() { |
1464 | 98 return map!=null || list==null; |
99 } | |
100 | |
408
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101 public List<Object> asList() { |
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102 return list!=null ? list : Collections.emptyList(); |
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103 } |
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104 |
1189 | 105 public Map rawMap() { |
106 return map!=null ? map : Collections.emptyMap(); | |
107 } | |
108 | |
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109 public String toStringLuan(Luan luan) throws LuanException { |
1607 | 110 LuanFunction fn = luan.getHandlerFunction("__to_string",this); |
111 if( fn == null ) | |
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112 return rawToString(); |
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113 return Luan.checkString( Luan.first( fn.call(luan,this) ) ); |
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114 } |
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115 |
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116 public String rawToString() { |
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117 return "table: " + Integer.toHexString(hashCode()); |
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118 } |
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119 |
1562 | 120 public Object get(Luan luan,Object key) throws LuanException { |
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121 //checkLuan(luan); |
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122 Object value = rawGet(key); |
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123 if( value != null ) |
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124 return value; |
1578 | 125 Object h = getHandler(luan,"__index"); |
426
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126 if( h==null ) |
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127 return null; |
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128 if( h instanceof LuanFunction ) { |
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129 LuanFunction fn = (LuanFunction)h; |
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130 return Luan.first(fn.call(luan,this,key)); |
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131 } |
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132 return luan.index(h,key); |
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133 } |
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134 |
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135 public Object rawGet(Object key) { |
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136 if( list != null ) { |
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137 Integer iT = Luan.asInteger(key); |
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138 if( iT != null ) { |
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139 int i = iT - 1; |
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140 if( i>=0 && i<list.size() ) |
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141 return list.get(i); |
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142 } |
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143 } |
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144 if( map==null ) |
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145 return null; |
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146 if( key instanceof Number && !(key instanceof Double) ) { |
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147 Number n = (Number)key; |
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148 key = Double.valueOf(n.doubleValue()); |
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149 } |
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150 return map.get(key); |
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151 } |
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152 |
1562 | 153 public void put(Luan luan,Object key,Object value) throws LuanException { |
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154 //checkLuan(luan); |
1578 | 155 Object h = getHandler(luan,"__new_index"); |
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156 if( h==null || rawGet(key)!=null ) { |
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157 rawPut(key,value); |
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158 return; |
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159 } |
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160 if( h instanceof LuanFunction ) { |
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161 LuanFunction fn = (LuanFunction)h; |
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162 fn.call(luan,this,key,value); |
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163 return; |
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164 } |
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165 if( h instanceof LuanTable ) { |
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166 LuanTable tbl = (LuanTable)h; |
1562 | 167 tbl.put(luan,key,value); |
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168 return; |
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169 } |
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170 throw new LuanException("invalid type "+Luan.type(h)+" for metamethod __new_index"); |
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171 } |
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172 |
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173 public Object rawPut(Object key,Object val) throws LuanException { |
1578 | 174 checkMutable(); |
1566 | 175 if( key==null ) |
176 throw new LuanException("table index is nil"); | |
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177 Integer iT = Luan.asInteger(key); |
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178 if( iT != null ) { |
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179 int i = iT - 1; |
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180 if( list != null || i == 0 ) { |
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181 if( i == list().size() ) { |
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182 if( val != null ) { |
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183 list.add(val); |
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184 mapToList(); |
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185 } |
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186 return null; |
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187 } else if( i>=0 && i<list.size() ) { |
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188 Object rtn = list.set(i,val); |
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189 if( val == null ) { |
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190 listToMap(i); |
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191 } |
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192 return rtn; |
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193 } |
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194 } |
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195 } |
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196 if( key instanceof Number && !(key instanceof Double) ) { |
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197 Number n = (Number)key; |
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198 key = Double.valueOf(n.doubleValue()); |
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199 } |
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200 if( val == null ) { |
1420 | 201 if( map!=null ) |
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202 return map.remove(key); |
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203 else |
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204 return null; |
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205 } else { |
1420 | 206 if( map==null ) |
207 map = newMap(); | |
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208 return map.put(key,val); |
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209 } |
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210 } |
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211 |
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212 private void mapToList() { |
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213 if( map != null ) { |
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214 while(true) { |
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215 Object v = map.remove(Double.valueOf(list.size()+1)); |
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216 if( v == null ) |
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217 break; |
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218 list.add(v); |
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219 } |
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220 } |
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221 } |
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222 |
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223 private void listToMap(int from) { |
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224 if( list != null ) { |
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225 while( list.size() > from ) { |
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226 int i = list.size() - 1; |
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227 Object v = list.remove(i); |
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228 if( v != null ) { |
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229 if( map==null ) |
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diff
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230 map = newMap(); |
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231 map.put(i+1,v); |
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232 } |
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233 } |
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234 } |
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235 } |
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236 |
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237 private List<Object> list() { |
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238 if( list == null ) { |
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239 list = new ArrayList<Object>(); |
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240 mapToList(); |
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241 } |
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242 return list; |
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243 } |
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244 |
1578 | 245 public void rawInsert(int pos,Object value) throws LuanException { |
246 checkMutable(); | |
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247 if( value==null ) |
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248 throw new IllegalArgumentException("can't insert a nil value"); |
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249 list().add(pos-1,value); |
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250 mapToList(); |
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251 } |
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252 |
1578 | 253 public void rawAdd(Object value) throws LuanException { |
254 checkMutable(); | |
1447 | 255 if( value==null ) |
256 throw new IllegalArgumentException("can't insert a nil value"); | |
257 list().add(value); | |
258 mapToList(); | |
259 } | |
260 | |
1578 | 261 public Object removeFromList(int pos) throws LuanException { |
262 checkMutable(); | |
1708 | 263 return list().remove(pos-1); |
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264 } |
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265 |
1578 | 266 public void rawSort(Comparator<Object> cmp) throws LuanException { |
267 checkMutable(); | |
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268 Collections.sort(list(),cmp); |
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269 } |
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270 |
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271 public int length(Luan luan) throws LuanException { |
1607 | 272 LuanFunction fn = luan.getHandlerFunction("__len",this); |
273 if( fn != null ) { | |
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274 return (Integer)Luan.first(fn.call(luan,this)); |
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275 } |
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276 return rawLength(); |
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277 } |
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278 |
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279 public int rawLength() { |
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280 return list==null ? 0 : list.size(); |
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281 } |
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282 |
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283 public Iterable<Map.Entry> iterable(Luan luan) throws LuanException { |
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284 final Iterator<Map.Entry> iter = iterator(luan); |
1113 | 285 return new Iterable<Map.Entry>() { |
286 public Iterator<Map.Entry> iterator() { | |
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287 return iter; |
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288 } |
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289 }; |
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290 } |
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291 |
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292 public Iterable<Map.Entry> rawIterable() { |
1113 | 293 final Iterator<Map.Entry> iter = rawIterator(); |
294 return new Iterable<Map.Entry>() { | |
295 public Iterator<Map.Entry> iterator() { | |
498
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296 return iter; |
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297 } |
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298 }; |
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299 } |
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300 |
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301 public Iterator<Map.Entry> iterator(final Luan luan) throws LuanException { |
1607 | 302 LuanFunction h = luan.getHandlerFunction("__pairs",this); |
303 if( h == null ) | |
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304 return rawIterator(); |
1607 | 305 final LuanFunction fn = pairs(luan,h); |
1113 | 306 return new Iterator<Map.Entry>() { |
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307 private Map.Entry<Object,Object> next = getNext(); |
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308 |
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309 private Map.Entry<Object,Object> getNext() { |
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310 try { |
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311 Object obj = fn.call(luan); |
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312 if( obj==null ) |
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313 return null; |
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314 Object[] a = (Object[])obj; |
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315 if( a.length == 0 || a[0]==null ) |
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316 return null; |
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317 return new AbstractMap.SimpleEntry<Object,Object>(a[0],a[1]); |
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318 } catch(LuanException e) { |
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319 throw new LuanRuntimeException(e); |
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320 } |
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321 } |
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322 |
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323 public boolean hasNext() { |
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324 return next != null; |
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325 } |
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326 |
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327 public Map.Entry<Object,Object> next() { |
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328 Map.Entry<Object,Object> rtn = next; |
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329 next = getNext(); |
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330 return rtn; |
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331 } |
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332 |
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333 public void remove() { |
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334 throw new UnsupportedOperationException(); |
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335 } |
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336 }; |
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337 } |
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338 |
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339 public LuanFunction pairs(Luan luan) throws LuanException { |
1607 | 340 return pairs( luan, luan.getHandlerFunction("__pairs",this) ); |
341 } | |
342 | |
343 private LuanFunction pairs(Luan luan,LuanFunction fn) throws LuanException { | |
344 if( fn==null ) | |
345 return rawPairs(); | |
346 Object obj = Luan.first(fn.call(luan,this)); | |
347 if( !(obj instanceof LuanFunction) ) | |
348 throw new LuanException( "metamethod __pairs should return function but returned " + Luan.type(obj) ); | |
349 return (LuanFunction)obj; | |
432
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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() { |
1113 | 354 final Iterator<Map.Entry> iter = rawIterator(); |
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355 |
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356 @Override public Object[] call(Luan luan,Object[] args) throws LuanException { |
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357 if( !iter.hasNext() ) |
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358 return LuanFunction.NOTHING; |
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359 try { |
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360 Map.Entry<Object,Object> entry = iter.next(); |
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361 return new Object[]{entry.getKey(),entry.getValue()}; |
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362 } catch(ConcurrentModificationException e) { |
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363 throw new LuanException("table modified while iterating"); |
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364 } |
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365 } |
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366 }; |
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367 } |
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368 |
1113 | 369 public Iterator<Map.Entry> rawIterator() { |
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370 if( list == null ) { |
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371 if( map == null ) |
1113 | 372 return Collections.<Map.Entry>emptyList().iterator(); |
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373 return map.entrySet().iterator(); |
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374 } |
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375 if( map == null ) |
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376 return listIterator(); |
1113 | 377 return new Iterator<Map.Entry>() { |
378 Iterator<Map.Entry> iter = listIterator(); | |
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379 boolean isList = true; |
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380 |
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381 public boolean hasNext() { |
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382 boolean b = iter.hasNext(); |
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383 if( !b && isList ) { |
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384 iter = map.entrySet().iterator(); |
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385 isList = false; |
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386 b = iter.hasNext(); |
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387 } |
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388 return b; |
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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 return iter.next(); |
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393 } |
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394 |
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395 public void remove() { |
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396 throw new UnsupportedOperationException(); |
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397 } |
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398 }; |
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399 } |
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400 |
1113 | 401 private Iterator<Map.Entry> listIterator() { |
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402 if( list == null ) |
1113 | 403 return Collections.<Map.Entry>emptyList().iterator(); |
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404 final ListIterator iter = list.listIterator(); |
1113 | 405 return new Iterator<Map.Entry>() { |
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406 |
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407 public boolean hasNext() { |
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408 return iter.hasNext(); |
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409 } |
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410 |
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411 public Map.Entry<Object,Object> next() { |
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412 Integer key = iter.nextIndex()+1; |
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413 return new AbstractMap.SimpleEntry<Object,Object>(key,iter.next()); |
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414 } |
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415 |
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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 |
431 | 422 public LuanTable rawSubList(int from,int to) { |
1562 | 423 LuanTable tbl = new LuanTable(); |
1730 | 424 tbl.list = new ArrayList<Object>(list().subList(from-1,to)); |
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425 return tbl; |
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426 } |
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427 |
408
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428 public LuanTable getMetatable() { |
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429 return metatable; |
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430 } |
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431 |
1330 | 432 public void setMetatable(LuanTable metatable) throws LuanException { |
1578 | 433 checkMutable(); |
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434 this.metatable = metatable; |
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435 } |
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436 |
1578 | 437 public Object getHandler(Luan luan,String op) throws LuanException { |
438 return metatable==null ? null : luan==null ? metatable.rawGet(op) : metatable.get(luan,op); | |
419
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439 } |
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440 |
1561 | 441 private static Map<Object,Object> newMap() { |
406
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442 return new LinkedHashMap<Object,Object>(); |
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443 } |
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444 |
1267 | 445 public boolean isSet() throws LuanException { |
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446 for( Map.Entry<Object,Object> entry : rawIterable() ) { |
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447 if( !entry.getValue().equals(Boolean.TRUE) ) |
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448 return false; |
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449 } |
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450 return true; |
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451 } |
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452 |
1267 | 453 public Set<Object> asSet() throws LuanException { |
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454 Set<Object> set = new HashSet<Object>(); |
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455 for( Map.Entry<Object,Object> entry : rawIterable() ) { |
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456 set.add(entry.getKey()); |
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457 } |
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458 return set; |
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459 } |
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460 |
1267 | 461 public Map<Object,Object> asMap() throws LuanException { |
406
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462 Map<Object,Object> map = newMap(); |
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463 for( Map.Entry<Object,Object> entry : rawIterable() ) { |
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464 map.put(entry.getKey(),entry.getValue()); |
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465 } |
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466 return map; |
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467 } |
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468 |
1578 | 469 public void rawClear() throws LuanException { |
470 checkMutable(); | |
497
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471 map = null; |
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472 list = null; |
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473 } |
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474 |
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475 public int hashValue() { |
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476 int n = 99; |
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477 if( map != null ) |
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478 n ^= map.hashCode(); |
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479 if( list != null ) |
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480 n ^= list.hashCode(); |
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481 return n; |
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482 } |
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483 |
1420 | 484 public boolean isEmpty() { |
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485 return (map==null || map.isEmpty()) && (list==null || list.isEmpty()); |
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486 } |
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487 |
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488 public int rawSize() { |
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489 int n = 0; |
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490 if( map != null ) |
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491 n += map.size(); |
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492 if( list != null ) |
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493 n += list.size(); |
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494 return n; |
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495 } |
1267 | 496 |
1561 | 497 public Object remove(Object key) throws LuanException { |
1578 | 498 checkMutable(); |
1420 | 499 Object old = rawGet(key); |
1562 | 500 rawPut(key,null); |
1420 | 501 return old; |
502 } | |
503 | |
1267 | 504 protected void finalize() throws Throwable { |
1578 | 505 Object h = getHandler(null,"__gc"); |
1267 | 506 if( h != null ) { |
507 LuanFunction fn = Luan.checkFunction(h); | |
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508 fn.call(new Luan(),this); // ??? should be immutable |
1267 | 509 } |
510 super.finalize(); | |
511 } | |
512 | |
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513 public LuanFunction fn(Luan luan,String fnName) throws LuanException { |
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514 return (LuanFunction)get(luan,fnName); |
1330 | 515 } |
1464 | 516 |
517 public static void debug(LuanTable table) { | |
518 System.out.println("isMap "+table.isMap()); | |
519 } | |
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520 } |