Mercurial Hosting > luan
annotate src/luan/LuanState.java @ 150:f35c50027985
make load() more consistent
git-svn-id: https://luan-java.googlecode.com/svn/trunk@151 21e917c8-12df-6dd8-5cb6-c86387c605b9
author | fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9> |
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date | Mon, 16 Jun 2014 10:11:48 +0000 |
parents | f99fd64291b3 |
children | 1de3e4a6e82d |
rev | line source |
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48
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1 package luan; |
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2 |
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3 import java.io.InputStream; |
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4 import java.io.PrintStream; |
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5 import java.util.List; |
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6 import java.util.ArrayList; |
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7 import java.util.Map; |
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8 import java.util.LinkedHashMap; |
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9 import luan.interp.LuanCompiler; |
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10 import luan.lib.BasicLib; |
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11 import luan.lib.PackageLib; |
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12 import luan.lib.JavaLib; |
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13 import luan.lib.MathLib; |
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14 import luan.lib.StringLib; |
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15 import luan.lib.TableLib; |
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16 import luan.lib.HtmlLib; |
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17 import luan.lib.BinaryLib; |
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18 import luan.lib.IoLib; |
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19 import luan.lib.ThreadLib; |
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20 import luan.lib.HttpLib; |
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21 |
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22 |
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23 public abstract class LuanState implements DeepCloneable<LuanState> { |
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24 private final LuanBit JAVA = bit(LuanElement.JAVA); |
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25 |
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26 public LuanException exception(Object msg) { |
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27 return JAVA.exception(msg); |
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28 } |
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29 |
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30 public Object call(LuanFunction fn) throws LuanException { |
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31 return call(fn,null,LuanFunction.NOTHING); |
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32 } |
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33 |
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34 public Object call(LuanFunction fn,String fnName) throws LuanException { |
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35 return call(fn,fnName,LuanFunction.NOTHING); |
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36 } |
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37 |
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38 public Object call(LuanFunction fn,Object[] args) throws LuanException { |
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39 return call(fn,null,args); |
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40 } |
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41 |
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42 public Object call(LuanFunction fn,String fnName,Object[] args) throws LuanException { |
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43 return JAVA.call(fn,fnName,args); |
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44 } |
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45 |
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46 public LuanFunction checkFunction(Object obj) throws LuanException { |
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47 return JAVA.checkFunction(obj); |
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48 } |
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49 |
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50 public String toString(Object obj) throws LuanException { |
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51 return JAVA.toString(obj); |
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52 } |
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53 |
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54 public String repr(Object obj) throws LuanException { |
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55 return JAVA.repr(obj); |
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56 } |
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57 |
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58 public boolean isLessThan(Object o1,Object o2) throws LuanException { |
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59 return JAVA.isLessThan(o1,o2); |
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60 } |
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61 |
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62 |
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63 |
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64 private LuanTable global; |
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65 private LuanTable loaded; |
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66 private LuanTable preload; |
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67 private LuanTable searchers; |
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68 |
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69 private final List<MetatableGetter> mtGetters; |
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70 final List<StackTraceElement> stackTrace = new ArrayList<StackTraceElement>(); |
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71 |
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72 protected LuanState() { |
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73 global = new LuanTable(); |
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74 global.put("_G",global); |
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75 loaded = new LuanTable(); |
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76 preload = new LuanTable(); |
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77 searchers = new LuanTable(); |
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78 mtGetters = new ArrayList<MetatableGetter>(); |
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79 } |
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80 |
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81 protected LuanState(LuanState luan) { |
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82 mtGetters = new ArrayList<MetatableGetter>(luan.mtGetters); |
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83 } |
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84 |
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85 @Override public void deepenClone(LuanState clone,DeepCloner cloner) { |
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86 clone.global = cloner.deepClone(global); |
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87 clone.loaded = cloner.deepClone(loaded); |
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88 clone.preload = cloner.deepClone(preload); |
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89 clone.searchers = cloner.deepClone(searchers); |
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90 } |
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91 |
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92 public abstract LuanTable currentEnvironment(); |
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93 |
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94 public final LuanTable global() { |
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95 return global; |
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96 } |
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97 |
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98 public final LuanTable loaded() { |
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99 return loaded; |
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100 } |
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101 |
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102 public final LuanTable preload() { |
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103 return preload; |
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104 } |
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105 |
108
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106 public final LuanTable searchers() { |
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107 return searchers; |
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108 } |
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109 |
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110 public final Object get(String name) { |
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111 String[] a = name.split("\\."); |
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112 LuanTable t = loaded; |
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113 for( int i=0; i<a.length-1; i++ ) { |
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114 Object obj = t.get(a[i]); |
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115 if( !(obj instanceof LuanTable) ) |
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116 return null; |
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117 t = (LuanTable)obj; |
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118 } |
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119 return t.get(a[a.length-1]); |
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120 } |
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121 |
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122 public final Object set(String name,Object value) { |
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123 String[] a = name.split("\\."); |
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124 LuanTable t = loaded; |
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125 for( int i=0; i<a.length-1; i++ ) { |
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126 Object obj = t.get(a[i]); |
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127 if( !(obj instanceof LuanTable) ) |
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128 return null; |
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129 t = (LuanTable)obj; |
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130 } |
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131 return t.put(a[a.length-1],value); |
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132 } |
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133 |
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134 private final void load(String modName,LuanFunction loader) throws LuanException { |
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135 preload.put(modName,loader); |
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136 Object mod = PackageLib.require(this,modName); |
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137 if( mod==null ) |
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138 throw new RuntimeException(); |
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139 global.put(modName,mod); |
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140 } |
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141 |
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142 public static LuanState newStandard() { |
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143 try { |
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144 LuanState luan = LuanCompiler.newLuanState(); |
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145 luan.load("Package",PackageLib.LOADER); |
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146 BasicLib.do_file(luan,"java:luan/lib/init.luan"); |
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147 return luan; |
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148 } catch(LuanException e) { |
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149 throw new RuntimeException(e); |
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150 } |
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151 } |
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152 |
140
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153 public final Object eval(String cmd) { |
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154 try { |
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155 LuanFunction fn = BasicLib.load(this,cmd,"eval",new LuanTable(),true); |
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156 return call(fn); |
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157 } catch(LuanException e) { |
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158 throw new RuntimeException(e); |
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159 } |
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160 } |
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161 |
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162 public final LuanTable getMetatable(Object obj) { |
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163 if( obj instanceof LuanTable ) { |
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164 LuanTable table = (LuanTable)obj; |
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165 return table.getMetatable(); |
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166 } |
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167 for( MetatableGetter mg : mtGetters ) { |
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168 LuanTable table = mg.getMetatable(obj); |
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169 if( table != null ) |
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170 return table; |
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171 } |
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172 return null; |
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173 } |
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174 |
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175 public final void addMetatableGetter(MetatableGetter mg) { |
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176 mtGetters.add(mg); |
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177 } |
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178 |
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179 public final LuanBit bit(LuanElement el) { |
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fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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180 return new LuanBit(this,el); |
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rename Lua to Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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181 } |
64ecb7a3aad7
rename Lua to Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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182 |
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rename Lua to Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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183 public final Object getHandler(String op,Object obj) { |
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rename Lua to Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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184 LuanTable t = getMetatable(obj); |
64ecb7a3aad7
rename Lua to Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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185 return t==null ? null : t.get(op); |
64ecb7a3aad7
rename Lua to Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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186 } |
64ecb7a3aad7
rename Lua to Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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187 |
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rename Lua to Luan
fschmidt@gmail.com <fschmidt@gmail.com@21e917c8-12df-6dd8-5cb6-c86387c605b9>
parents:
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188 } |