Mercurial Hosting > luan
annotate src/luan/LuanTable.java @ 1447:851b9a48cc44
Luan.parse
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Tue, 18 Feb 2020 14:54:35 -0700 |
parents | 225808b90cee |
children | 465b4a0dae4a |
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); |
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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 |
1447 | 282 public void rawAdd(Object value) { |
283 check(); | |
284 if( value==null ) | |
285 throw new IllegalArgumentException("can't insert a nil value"); | |
286 list().add(value); | |
287 mapToList(); | |
288 } | |
289 | |
1420 | 290 public Object removeFromList(int pos) { |
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291 check(); |
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292 return list().remove(pos-1); |
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293 } |
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294 |
431 | 295 public void rawSort(Comparator<Object> cmp) { |
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296 check(); |
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297 Collections.sort(list(),cmp); |
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298 } |
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299 |
1267 | 300 public int length() throws LuanException { |
301 Object h = getHandler("__len"); | |
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302 if( h != null ) { |
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303 LuanFunction fn = Luan.checkFunction(h); |
1335 | 304 return (Integer)Luan.first(fn.call(this)); |
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305 } |
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306 return rawLength(); |
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307 } |
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308 |
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309 public int rawLength() { |
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310 check(); |
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311 return list==null ? 0 : list.size(); |
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312 } |
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313 |
1267 | 314 public Iterable<Map.Entry> iterable() throws LuanException { |
315 final Iterator<Map.Entry> iter = iterator(); | |
1113 | 316 return new Iterable<Map.Entry>() { |
317 public Iterator<Map.Entry> iterator() { | |
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318 return iter; |
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319 } |
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320 }; |
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321 } |
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322 |
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323 public Iterable<Map.Entry> rawIterable() { |
1113 | 324 final Iterator<Map.Entry> iter = rawIterator(); |
325 return new Iterable<Map.Entry>() { | |
326 public Iterator<Map.Entry> iterator() { | |
498
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327 return iter; |
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328 } |
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329 }; |
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330 } |
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331 |
1267 | 332 public Iterator<Map.Entry> iterator() throws LuanException { |
333 if( getHandler("__pairs") == null ) | |
432
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334 return rawIterator(); |
1267 | 335 final LuanFunction fn = pairs(); |
1113 | 336 return new Iterator<Map.Entry>() { |
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337 private Map.Entry<Object,Object> next = getNext(); |
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338 |
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339 private Map.Entry<Object,Object> getNext() { |
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340 try { |
1335 | 341 Object obj = fn.call(); |
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342 if( obj==null ) |
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343 return null; |
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344 Object[] a = (Object[])obj; |
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345 if( a.length == 0 || a[0]==null ) |
432
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346 return null; |
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347 return new AbstractMap.SimpleEntry<Object,Object>(a[0],a[1]); |
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348 } catch(LuanException e) { |
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349 throw new LuanRuntimeException(e); |
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350 } |
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351 } |
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352 |
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353 public boolean hasNext() { |
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354 return next != null; |
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355 } |
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356 |
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357 public Map.Entry<Object,Object> next() { |
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358 Map.Entry<Object,Object> rtn = next; |
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359 next = getNext(); |
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360 return rtn; |
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361 } |
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362 |
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363 public void remove() { |
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364 throw new UnsupportedOperationException(); |
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365 } |
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366 }; |
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367 } |
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368 |
1267 | 369 public LuanFunction pairs() throws LuanException { |
370 Object h = getHandler("__pairs"); | |
432
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371 if( h != null ) { |
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372 if( h instanceof LuanFunction ) { |
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373 LuanFunction fn = (LuanFunction)h; |
1335 | 374 Object obj = Luan.first(fn.call(this)); |
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375 if( !(obj instanceof LuanFunction) ) |
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376 throw new LuanException( "metamethod __pairs should return function but returned " + Luan.type(obj) ); |
432
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377 return (LuanFunction)obj; |
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378 } |
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379 throw new LuanException( "invalid type of metamethod __pairs: " + Luan.type(h) ); |
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380 } |
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381 return rawPairs(); |
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382 } |
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383 |
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384 private LuanFunction rawPairs() { |
1335 | 385 return new LuanFunction(false) { // ??? |
1113 | 386 final Iterator<Map.Entry> iter = rawIterator(); |
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387 |
1335 | 388 @Override public Object[] call(Object[] args) { |
432
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389 if( !iter.hasNext() ) |
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390 return LuanFunction.NOTHING; |
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391 Map.Entry<Object,Object> entry = iter.next(); |
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392 return new Object[]{entry.getKey(),entry.getValue()}; |
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393 } |
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394 }; |
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395 } |
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396 |
1113 | 397 public Iterator<Map.Entry> rawIterator() { |
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398 check(); |
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399 if( list == null ) { |
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400 if( map == null ) |
1113 | 401 return Collections.<Map.Entry>emptyList().iterator(); |
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402 return map.entrySet().iterator(); |
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403 } |
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404 if( map == null ) |
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405 return listIterator(); |
1113 | 406 return new Iterator<Map.Entry>() { |
407 Iterator<Map.Entry> iter = listIterator(); | |
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408 boolean isList = true; |
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409 |
44
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410 public boolean hasNext() { |
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411 boolean b = iter.hasNext(); |
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412 if( !b && isList ) { |
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413 iter = map.entrySet().iterator(); |
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414 isList = false; |
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415 b = iter.hasNext(); |
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416 } |
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417 return b; |
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418 } |
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419 |
44
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420 public Map.Entry<Object,Object> next() { |
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421 return iter.next(); |
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422 } |
432
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423 |
44
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424 public void remove() { |
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425 throw new UnsupportedOperationException(); |
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426 } |
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427 }; |
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428 } |
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429 |
1113 | 430 private Iterator<Map.Entry> listIterator() { |
44
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431 if( list == null ) |
1113 | 432 return Collections.<Map.Entry>emptyList().iterator(); |
44
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433 final ListIterator iter = list.listIterator(); |
1113 | 434 return new Iterator<Map.Entry>() { |
432
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435 |
44
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436 public boolean hasNext() { |
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437 return iter.hasNext(); |
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438 } |
432
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439 |
44
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440 public Map.Entry<Object,Object> next() { |
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441 Integer key = iter.nextIndex()+1; |
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442 return new AbstractMap.SimpleEntry<Object,Object>(key,iter.next()); |
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443 } |
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444 |
44
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445 public void remove() { |
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446 throw new UnsupportedOperationException(); |
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447 } |
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448 }; |
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449 } |
221
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450 |
431 | 451 public LuanTable rawSubList(int from,int to) { |
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452 check(); |
1267 | 453 LuanTable tbl = new LuanTable(luan); |
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454 tbl.list = new ArrayList<Object>(list().subList(from-1,to-1)); |
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455 return tbl; |
27
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456 } |
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457 |
408
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458 public LuanTable getMetatable() { |
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459 check(); |
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460 return metatable; |
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461 } |
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462 |
1330 | 463 public void setMetatable(LuanTable metatable) throws LuanException { |
464 if( security != null ) | |
465 Luan.checkSecurity(luan,"table",security,"set_metatable",metatable); | |
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466 check(); |
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467 this.metatable = metatable; |
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468 } |
300
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469 |
1267 | 470 public Object getHandler(String op) throws LuanException { |
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471 check(); |
1267 | 472 return metatable==null ? null : metatable.get(op); |
419
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473 } |
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474 |
431 | 475 private Map<Object,Object> newMap() { |
406
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476 return new LinkedHashMap<Object,Object>(); |
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477 } |
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478 |
1267 | 479 public boolean isSet() throws LuanException { |
480 for( Map.Entry<Object,Object> entry : iterable() ) { | |
406
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481 if( !entry.getValue().equals(Boolean.TRUE) ) |
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482 return false; |
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483 } |
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484 return true; |
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485 } |
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486 |
1267 | 487 public Set<Object> asSet() throws LuanException { |
406
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488 Set<Object> set = new HashSet<Object>(); |
1267 | 489 for( Map.Entry<Object,Object> entry : iterable() ) { |
406
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490 set.add(entry.getKey()); |
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491 } |
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492 return set; |
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493 } |
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494 |
1267 | 495 public Map<Object,Object> asMap() throws LuanException { |
406
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496 Map<Object,Object> map = newMap(); |
1267 | 497 for( Map.Entry<Object,Object> entry : iterable() ) { |
406
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498 map.put(entry.getKey(),entry.getValue()); |
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499 } |
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500 return map; |
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501 } |
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502 |
497
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503 public void rawClear() { |
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504 check(); |
497
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505 map = null; |
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506 list = null; |
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507 } |
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508 |
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509 public int hashValue() { |
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510 int n = 99; |
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511 if( map != null ) |
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512 n ^= map.hashCode(); |
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513 if( list != null ) |
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514 n ^= list.hashCode(); |
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515 return n; |
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516 } |
1100
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517 |
1420 | 518 public boolean isEmpty() { |
1100
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519 return (map==null || map.isEmpty()) && (list==null || list.isEmpty()); |
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520 } |
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521 |
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522 public int rawSize() { |
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523 int n = 0; |
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524 if( map != null ) |
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525 n += map.size(); |
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526 if( list != null ) |
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527 n += list.size(); |
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528 return n; |
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529 } |
1267 | 530 |
1420 | 531 public Object remove(Object key) { |
532 Object old = rawGet(key); | |
533 rawPut2(key,null); | |
534 return old; | |
535 } | |
536 | |
1267 | 537 protected void finalize() throws Throwable { |
538 Object h = getHandler("__gc"); | |
539 if( h != null ) { | |
540 LuanFunction fn = Luan.checkFunction(h); | |
1335 | 541 fn.call(this); |
1267 | 542 } |
543 super.finalize(); | |
544 } | |
545 | |
1335 | 546 public LuanFunction fn(String fnName) throws LuanException { |
547 return (LuanFunction)get(fnName); | |
1283
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548 } |
1330 | 549 |
550 public static void setSecurity(LuanTable tbl,String security) { | |
551 tbl.security = security; | |
552 } | |
1
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start Luan
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553 } |