Mercurial Hosting > luan
annotate core/src/luan/LuanTable.java @ 503:92c3d22745b8
make _ENV optional
author | Franklin Schmidt <fschmidt@gmail.com> |
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date | Wed, 20 May 2015 23:24:46 -0600 |
parents | d3183a330ff5 |
children | e3b0846dc2ef |
rev | line source |
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1
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1 package luan; |
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2 |
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3 import java.util.Iterator; |
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4 import java.util.ListIterator; |
1
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5 import java.util.Map; |
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6 import java.util.AbstractMap; |
406
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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; |
72
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14 import java.util.IdentityHashMap; |
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15 import java.util.regex.Pattern; |
502
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16 import luan.modules.StringLuan; |
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17 import luan.modules.BinaryLuan; |
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18 import luan.modules.JavaLuan; |
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19 |
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20 |
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21 public final class LuanTable implements DeepCloneable { |
434 | 22 private Map map = null; |
23 private List list = null; | |
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24 private LuanTable metatable = null; |
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25 |
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26 public LuanTable() {} |
364 | 27 |
434 | 28 public LuanTable(List list) { |
432
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29 int n = list.size(); |
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30 for( int i=0; i<n; i++ ) { |
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31 Object val = list.get(i); |
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32 if( val != null ) |
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33 rawPut(i+1,val); |
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34 } |
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35 } |
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36 |
434 | 37 public LuanTable(Map map) { |
38 for( Object stupid : map.entrySet() ) { | |
39 Map.Entry entry = (Map.Entry)stupid; | |
432
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40 Object key = entry.getKey(); |
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41 Object value = entry.getValue(); |
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42 if( key != null && value != null ) |
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43 rawPut(key,value); |
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44 } |
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45 } |
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46 |
434 | 47 public LuanTable(Set set) { |
432
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48 for( Object el : set ) { |
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49 if( el != null ) |
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50 rawPut(el,Boolean.TRUE); |
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51 } |
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52 } |
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53 |
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54 public LuanTable(LuanTable tbl) { |
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55 if( tbl.map != null && !tbl.map.isEmpty() ) |
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56 this.map = new LinkedHashMap<Object,Object>(tbl.map); |
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57 if( tbl.rawLength() > 0 ) |
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58 this.list = new ArrayList<Object>(tbl.list); |
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59 this.metatable = tbl.metatable; |
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60 } |
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61 |
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62 @Override public LuanTable shallowClone() { |
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63 return new LuanTable(); |
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64 } |
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65 |
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66 @Override public void deepenClone(DeepCloneable dc,DeepCloner cloner) { |
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67 LuanTable clone = (LuanTable)dc; |
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68 if( map != null ) { |
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69 clone.map = newMap(); |
434 | 70 for( Object stupid : map.entrySet() ) { |
71 Map.Entry entry = (Map.Entry)stupid; | |
77
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72 clone.map.put( cloner.get(entry.getKey()), cloner.get(entry.getValue()) ); |
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73 } |
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74 } |
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75 if( list != null ) { |
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76 clone.list = new ArrayList<Object>(); |
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77 for( Object obj : list ) { |
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78 clone.list.add( cloner.get(obj) ); |
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79 } |
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80 } |
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81 if( metatable != null ) |
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82 clone.metatable = (LuanTable)cloner.get(metatable); |
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83 } |
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84 |
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85 public boolean isList() { |
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86 return map==null || map.isEmpty(); |
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87 } |
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88 |
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89 public List<Object> asList() { |
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90 return list!=null ? list : Collections.emptyList(); |
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91 } |
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92 |
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93 public String toString(LuanState luan) throws LuanException { |
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94 Object h = getHandler("__to_string"); |
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95 if( h == null ) |
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96 return rawToString(); |
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97 if( h instanceof LuanMeta ) { |
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98 LuanMeta meta = (LuanMeta)h; |
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99 return meta.__to_string(luan,this); |
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100 } |
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101 LuanFunction fn = luan.checkFunction(h); |
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102 return luan.checkString( Luan.first( luan.call(fn,"__to_string",new Object[]{this}) ) ); |
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103 } |
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104 |
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105 public String rawToString() { |
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106 return "table: " + Integer.toHexString(hashCode()); |
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107 } |
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108 |
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109 public Object get(LuanState luan,Object key) throws LuanException { |
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110 Object value = rawGet(key); |
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111 if( value != null ) |
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112 return value; |
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113 Object h = getHandler("__index"); |
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114 if( h==null ) |
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115 return null; |
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116 if( h instanceof LuanFunction ) { |
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117 LuanFunction fn = (LuanFunction)h; |
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118 return Luan.first(luan.call(fn,"__index",new Object[]{this,key})); |
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119 } |
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120 if( h instanceof LuanMeta ) { |
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121 LuanMeta meta = (LuanMeta)h; |
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122 return meta.__index(luan,this,key); |
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123 } |
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124 return index(luan.JAVA,h,key); |
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125 } |
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126 |
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127 public static Object index(LuanBit bit,Object obj,Object key) throws LuanException { |
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128 LuanState luan = bit.luan; |
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129 if( obj instanceof LuanTable ) { |
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130 LuanTable tbl = (LuanTable)obj; |
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131 return tbl.get(luan,key); |
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132 } |
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133 if( obj instanceof String ) |
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134 return StringLuan.__index(luan,(String)obj,key); |
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135 if( obj instanceof byte[] ) |
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136 return BinaryLuan.__index(luan,(byte[])obj,key); |
503 | 137 if( obj != null && luan.hasJava() ) |
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138 return JavaLuan.__index(luan,obj,key); |
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139 else if( bit.el==null ) |
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140 throw bit.exception( "attempt to index a " + Luan.type(obj) + " value" ); |
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141 else |
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142 throw bit.exception( "attempt to index '"+bit.el.text()+"' (a " + Luan.type(obj) + " value)" ); |
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143 } |
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144 |
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145 public Object rawGet(Object key) { |
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146 if( list != null ) { |
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147 Integer iT = Luan.asInteger(key); |
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148 if( iT != null ) { |
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149 int i = iT - 1; |
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150 if( i>=0 && i<list.size() ) |
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151 return list.get(i); |
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152 } |
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153 } |
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154 if( map==null ) |
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155 return null; |
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156 return map.get(key); |
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157 } |
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158 |
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159 public void put(LuanState luan,Object key,Object value) throws LuanException { |
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160 Object h = getHandler("__new_index"); |
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161 if( h==null || rawGet(key)!=null ) { |
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162 rawPut(key,value); |
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163 return; |
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164 } |
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165 if( h instanceof LuanFunction ) { |
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166 LuanFunction fn = (LuanFunction)h; |
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167 luan.call(fn,"__new_index",new Object[]{this,key,value}); |
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168 return; |
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169 } |
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170 if( h instanceof LuanMeta ) { |
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171 LuanMeta meta = (LuanMeta)h; |
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172 meta.__new_index(luan,this,key,value); |
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173 return; |
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174 } |
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175 if( h instanceof LuanTable ) { |
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176 LuanTable tbl = (LuanTable)h; |
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177 tbl.put(luan,key,value); |
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178 return; |
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179 } |
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180 throw luan.exception("invalid type "+Luan.type(h)+" for metamethod __new_index"); |
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181 } |
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182 |
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183 public void rawPut(Object key,Object val) { |
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184 Integer iT = Luan.asInteger(key); |
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185 if( iT != null ) { |
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186 int i = iT - 1; |
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187 if( list != null || i == 0 ) { |
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188 if( i == list().size() ) { |
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189 if( val != null ) { |
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190 list.add(val); |
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191 mapToList(); |
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192 } |
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193 return; |
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194 } else if( i>=0 && i<list.size() ) { |
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195 list.set(i,val); |
118
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196 if( val == null ) { |
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197 listToMap(i); |
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198 } |
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199 return; |
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200 } |
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201 } |
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202 } |
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203 if( map==null ) { |
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204 map = newMap(); |
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205 } |
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206 if( key instanceof Number && !(key instanceof Double) ) { |
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207 Number n = (Number)key; |
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208 key = Double.valueOf(n.doubleValue()); |
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209 } |
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210 if( val == null ) { |
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211 map.remove(key); |
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212 } else { |
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213 map.put(key,val); |
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214 } |
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215 } |
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216 |
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217 private void mapToList() { |
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218 if( map != null ) { |
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219 while(true) { |
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220 Object v = map.remove(Double.valueOf(list.size()+1)); |
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221 if( v == null ) |
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222 break; |
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223 list.add(v); |
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224 } |
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225 } |
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226 } |
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227 |
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228 private void listToMap(int from) { |
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229 if( list != null ) { |
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230 while( list.size() > from ) { |
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231 int i = list.size() - 1; |
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232 Object v = list.remove(i); |
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233 if( v != null ) { |
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234 if( map==null ) |
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235 map = newMap(); |
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236 map.put(i+1,v); |
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237 } |
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238 } |
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239 } |
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240 } |
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241 |
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242 private List<Object> list() { |
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243 if( list == null ) { |
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244 list = new ArrayList<Object>(); |
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245 mapToList(); |
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246 } |
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247 return list; |
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248 } |
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249 |
431 | 250 public void rawInsert(int pos,Object value) { |
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251 if( value==null ) |
222
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252 throw new IllegalArgumentException("can't insert a nil value"); |
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253 list().add(pos-1,value); |
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254 mapToList(); |
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255 } |
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256 |
431 | 257 public Object rawRemove(int pos) { |
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258 return list().remove(pos-1); |
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259 } |
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260 |
431 | 261 public void rawSort(Comparator<Object> cmp) { |
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262 Collections.sort(list(),cmp); |
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263 } |
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264 |
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265 public int length(LuanState luan) throws LuanException { |
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266 Object h = getHandler("__len"); |
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267 if( h != null ) { |
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268 LuanFunction fn = luan.checkFunction(h); |
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269 return (Integer)Luan.first(luan.call(fn,"__len",new Object[]{this})); |
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270 } |
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271 return rawLength(); |
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272 } |
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273 |
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274 public int rawLength() { |
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275 return list==null ? 0 : list.size(); |
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276 } |
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277 |
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278 public Iterable<Map.Entry<Object,Object>> iterable(LuanState luan) throws LuanException { |
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279 final Iterator<Map.Entry<Object,Object>> iter = iterator(luan); |
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280 return new Iterable<Map.Entry<Object,Object>>() { |
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281 public Iterator<Map.Entry<Object,Object>> iterator() { |
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282 return iter; |
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283 } |
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284 }; |
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285 } |
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286 |
498
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287 public Iterable<Map.Entry<Object,Object>> rawIterable() throws LuanException { |
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288 final Iterator<Map.Entry<Object,Object>> iter = rawIterator(); |
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289 return new Iterable<Map.Entry<Object,Object>>() { |
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290 public Iterator<Map.Entry<Object,Object>> iterator() { |
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291 return iter; |
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292 } |
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293 }; |
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294 } |
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295 |
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296 public Iterator<Map.Entry<Object,Object>> iterator(final LuanState luan) throws LuanException { |
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297 if( getHandler("__pairs") == null ) |
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298 return rawIterator(); |
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299 final LuanFunction fn = pairs(luan); |
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300 return new Iterator<Map.Entry<Object,Object>>() { |
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301 private Map.Entry<Object,Object> next = getNext(); |
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302 |
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303 private Map.Entry<Object,Object> getNext() { |
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304 try { |
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305 Object obj = luan.call(fn); |
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306 if( obj==null ) |
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307 return null; |
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308 Object[] a = (Object[])obj; |
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309 if( a.length == 0 || a[0]==null ) |
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310 return null; |
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311 return new AbstractMap.SimpleEntry<Object,Object>(a[0],a[1]); |
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312 } catch(LuanException e) { |
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313 throw new LuanRuntimeException(e); |
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314 } |
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315 } |
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316 |
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317 public boolean hasNext() { |
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318 return next != null; |
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319 } |
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320 |
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321 public Map.Entry<Object,Object> next() { |
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322 Map.Entry<Object,Object> rtn = next; |
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323 next = getNext(); |
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324 return rtn; |
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325 } |
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326 |
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327 public void remove() { |
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328 throw new UnsupportedOperationException(); |
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329 } |
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330 }; |
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331 } |
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332 |
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333 public LuanFunction pairs(final LuanState luan) throws LuanException { |
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334 Object h = getHandler("__pairs"); |
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335 if( h != null ) { |
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336 if( h instanceof LuanFunction ) { |
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337 Object obj = Luan.first(luan.call((LuanFunction)h,"__pairs",new Object[]{this})); |
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338 if( !(obj instanceof LuanFunction) ) |
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339 throw luan.exception( "metamethod __pairs should return function but returned " + Luan.type(obj) ); |
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340 return (LuanFunction)obj; |
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341 } |
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342 if( h instanceof LuanMeta ) { |
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343 LuanMeta meta = (LuanMeta)h; |
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344 return meta.__pairs(luan,this); |
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345 } |
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346 throw luan.exception( "invalid type of metamethod __pairs: " + Luan.type(h) ); |
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347 } |
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348 return rawPairs(); |
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349 } |
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350 |
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351 private LuanFunction rawPairs() { |
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352 return new LuanFunction() { |
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353 final Iterator<Map.Entry<Object,Object>> iter = rawIterator(); |
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354 |
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355 @Override public Object[] call(LuanState luan,Object[] args) { |
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356 if( !iter.hasNext() ) |
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357 return LuanFunction.NOTHING; |
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358 Map.Entry<Object,Object> entry = iter.next(); |
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359 return new Object[]{entry.getKey(),entry.getValue()}; |
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360 } |
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361 }; |
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362 } |
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363 |
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364 public Iterator<Map.Entry<Object,Object>> rawIterator() { |
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365 if( list == null ) { |
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366 if( map == null ) |
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367 return Collections.<Map.Entry<Object,Object>>emptyList().iterator(); |
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368 return map.entrySet().iterator(); |
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369 } |
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370 if( map == null ) |
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371 return listIterator(); |
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372 return new Iterator<Map.Entry<Object,Object>>() { |
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373 Iterator<Map.Entry<Object,Object>> iter = listIterator(); |
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374 boolean isList = true; |
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375 |
44
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376 public boolean hasNext() { |
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377 boolean b = iter.hasNext(); |
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378 if( !b && isList ) { |
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379 iter = map.entrySet().iterator(); |
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380 isList = false; |
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381 b = iter.hasNext(); |
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382 } |
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383 return b; |
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384 } |
432
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385 |
44
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386 public Map.Entry<Object,Object> next() { |
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387 return iter.next(); |
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388 } |
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389 |
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390 public void remove() { |
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391 throw new UnsupportedOperationException(); |
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392 } |
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393 }; |
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394 } |
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395 |
221
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396 private Iterator<Map.Entry<Object,Object>> listIterator() { |
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397 if( list == null ) |
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398 return Collections.<Map.Entry<Object,Object>>emptyList().iterator(); |
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399 final ListIterator iter = list.listIterator(); |
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400 return new Iterator<Map.Entry<Object,Object>>() { |
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401 |
44
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402 public boolean hasNext() { |
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403 return iter.hasNext(); |
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404 } |
432
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405 |
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406 public Map.Entry<Object,Object> next() { |
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407 Integer key = iter.nextIndex()+1; |
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408 return new AbstractMap.SimpleEntry<Object,Object>(key,iter.next()); |
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409 } |
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410 |
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411 public void remove() { |
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412 throw new UnsupportedOperationException(); |
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413 } |
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414 }; |
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415 } |
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416 |
431 | 417 public LuanTable rawSubList(int from,int to) { |
408
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418 LuanTable tbl = shallowClone(); |
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419 tbl.list = new ArrayList<Object>(list().subList(from-1,to-1)); |
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420 return tbl; |
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421 } |
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422 |
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423 public LuanTable getMetatable() { |
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424 return metatable; |
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425 } |
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426 |
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427 public void setMetatable(LuanTable metatable) { |
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428 this.metatable = metatable; |
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429 } |
300
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430 |
419
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431 public Object getHandler(String op) { |
432
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432 return metatable==null ? null : metatable.rawGet(op); |
419
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433 } |
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434 |
431 | 435 private Map<Object,Object> newMap() { |
406
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436 return new LinkedHashMap<Object,Object>(); |
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437 } |
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438 |
432
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439 public boolean isSet(LuanState luan) throws LuanException { |
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440 for( Map.Entry<Object,Object> entry : iterable(luan) ) { |
406
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441 if( !entry.getValue().equals(Boolean.TRUE) ) |
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442 return false; |
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443 } |
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444 return true; |
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445 } |
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446 |
432
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447 public Set<Object> asSet(LuanState luan) throws LuanException { |
406
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parents:
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448 Set<Object> set = new HashSet<Object>(); |
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449 for( Map.Entry<Object,Object> entry : iterable(luan) ) { |
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450 set.add(entry.getKey()); |
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Franklin Schmidt <fschmidt@gmail.com>
parents:
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451 } |
9321a33b9b1c
remove AbstractLuanTable
Franklin Schmidt <fschmidt@gmail.com>
parents:
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452 return set; |
9321a33b9b1c
remove AbstractLuanTable
Franklin Schmidt <fschmidt@gmail.com>
parents:
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453 } |
9321a33b9b1c
remove AbstractLuanTable
Franklin Schmidt <fschmidt@gmail.com>
parents:
397
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454 |
432
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Franklin Schmidt <fschmidt@gmail.com>
parents:
431
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455 public Map<Object,Object> asMap(LuanState luan) throws LuanException { |
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parents:
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456 Map<Object,Object> map = newMap(); |
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Franklin Schmidt <fschmidt@gmail.com>
parents:
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457 for( Map.Entry<Object,Object> entry : iterable(luan) ) { |
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parents:
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458 map.put(entry.getKey(),entry.getValue()); |
9321a33b9b1c
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Franklin Schmidt <fschmidt@gmail.com>
parents:
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459 } |
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Franklin Schmidt <fschmidt@gmail.com>
parents:
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460 return map; |
9321a33b9b1c
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Franklin Schmidt <fschmidt@gmail.com>
parents:
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461 } |
9321a33b9b1c
remove AbstractLuanTable
Franklin Schmidt <fschmidt@gmail.com>
parents:
397
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462 |
497
55f9f74f1e55
Http.request is now pure luan
Franklin Schmidt <fschmidt@gmail.com>
parents:
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463 public void rawClear() { |
55f9f74f1e55
Http.request is now pure luan
Franklin Schmidt <fschmidt@gmail.com>
parents:
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464 map = null; |
55f9f74f1e55
Http.request is now pure luan
Franklin Schmidt <fschmidt@gmail.com>
parents:
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465 list = null; |
55f9f74f1e55
Http.request is now pure luan
Franklin Schmidt <fschmidt@gmail.com>
parents:
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466 } |
55f9f74f1e55
Http.request is now pure luan
Franklin Schmidt <fschmidt@gmail.com>
parents:
434
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467 |
1
2df768b926aa
start Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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468 } |