Mercurial > repos > IBDev-IBBoard.WarFoundry.API

annotate API/Factories/AbstractNativeWarFoundryFactory.cs @ 416:c70973b65090

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Fixes #94: Loading files is too slow * Check file extensions to cut down on false-positive file loads. NOTE: This solution isn't ideal, but SharpZipLib has a FIXME in that their scan will be slow on non-zips.
author IBBoard <dev@ibboard.co.uk>
date Sun, 04 Sep 2011 20:43:44 +0100
parents 3c4a6403a88c
children 2a36ebb7b6a9
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1 // This file (AbstractNativeWarFoundryFactory.cs) is a part of the IBBoard.WarFoundry.API project and is copyright 2007, 2008, 2009 IBBoard.
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2 //
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3 // The file and the library/program it is in are licensed and distributed, without warranty, under the GNU Affero GPL license, either version 3 of the License or (at your option) any later version. Please see COPYING for more information and the full license.
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4
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5 using System;
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6 using System.IO;
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7 using System.Xml;
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8 using System.Xml.Schema;
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9 using System.Collections.Generic;
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10 using System.Text;
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11 using IBBoard;
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12 using IBBoard.IO;
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13 using IBBoard.Lang;
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14 using IBBoard.Logging;
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15 using IBBoard.Xml;
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16 using IBBoard.WarFoundry.API.Objects;
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17 using ICSharpCode.SharpZipLib.Zip;
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18
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19 namespace IBBoard.WarFoundry.API.Factories
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20 {
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21 /// <summary>
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22 /// Base abstract class for all factories that load native WarFoundry data.
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23 /// </summary>
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24 public abstract class AbstractNativeWarFoundryFactory : AbstractWarFoundryFactory<ZipFile>, INativeWarFoundryFactory
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25 {
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26 protected AbstractNativeWarFoundryFactory()
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27 {
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28 //Do nothing - just make the constructor non-public
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29 }
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30
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31 protected override ZipFile GetFileAsSupportedType (FileInfo file)
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32 {
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33 ZipFile zip = null;
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34 string ext = file.Extension;
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35
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36 if (ext == "race" || ext == "army" || ext == "system")
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37 {
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38 try
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39 {
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40 zip = new ZipFile(file.FullName);
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41 }
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42 catch (ZipException)
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43 {
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44 //Silently dispose as per spec for the method
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45 }
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46 catch (IOException)
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47 {
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48 //Silently dispose as per spec for the method
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49 }
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50 }
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51 return zip;
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52 }
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53
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54 protected override bool CheckCanHandleFileFormat (ZipFile file)
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55 {
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56 return CheckCanHandleFileAsGameSystem(file) || CheckCanHandleFileAsRace(file) || CheckCanHandleFileAsArmy(file);
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57 }
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58
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59 protected override bool CheckCanHandleFileAsGameSystem(ZipFile file)
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60 {
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61 return CheckCanFindSystemFileContent(file);
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62 }
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63
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64 protected abstract bool CheckCanFindSystemFileContent(ZipFile file);
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65
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66 protected override bool CheckCanHandleFileAsRace(ZipFile file)
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67 {
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68 return CheckCanFindRaceFileContent(file);
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69 }
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70
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71 protected abstract bool CheckCanFindRaceFileContent(ZipFile file);
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72
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73 protected override bool CheckCanHandleFileAsArmy(ZipFile file)
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74 {
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75 return CheckCanFindArmyFileContent(file);
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76 }
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77
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78 protected abstract bool CheckCanFindArmyFileContent(ZipFile file);
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79
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80 protected override ICollection<IWarFoundryObject> DoCreateObjectsFromFile (ZipFile file)
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81 {
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82 ICollection<IWarFoundryObject> objects = new List<IWarFoundryObject>();
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83
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84 try
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85 {
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86 if (CheckCanFindSystemFileContent(file))
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87 {
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88 foreach (GameSystem system in CreateGameSystemsFromFile(file))
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89 {
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90 OnGameSystemLoaded(system);
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91 objects.Add(system);
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92 }
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93 }
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94
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95 if (CheckCanFindRaceFileContent(file))
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96 {
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97 foreach(Race race in CreateRacesFromFile(file))
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98 {
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99 OnRaceLoaded(race);
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100 objects.Add(race);
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101 }
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102 }
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103
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104 if (CheckCanFindArmyFileContent(file))
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105 {
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106 foreach (Army army in CreateArmiesFromFile(file))
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107 {
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108 OnArmyLoaded(army);
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109 objects.Add(army);
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110 }
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111 }
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112 }
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113 finally
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114 {
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115 file.Close();
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116 }
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117
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118 return objects;
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119 }
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120
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121 protected ICollection<Army> CreateArmiesFromFile(ZipFile file)
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122 {
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123 ICollection<ZipEntry> dataStreams = GetArmyZipEntries(file);
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124 ICollection<Army> armies = new List<Army>();
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125
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126 foreach (ZipEntry entry in dataStreams)
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127 {
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128 using (Stream dataStream = file.GetInputStream(entry))
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129 {
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130 armies.Add(CreateArmyFromStream(file, dataStream));
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131 }
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132 }
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133
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134 return armies;
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135 }
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136
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137 protected abstract ICollection<ZipEntry> GetArmyZipEntries(ZipFile file);
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138 protected abstract Army CreateArmyFromStream(ZipFile file, Stream dataStream);
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139
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140 protected ICollection<Race> CreateRacesFromFile(ZipFile file)
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141 {
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142 ICollection<ZipEntry> dataStreams = GetRaceZipEntries(file);
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143 ICollection<Race> races = new List<Race>();
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144
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145 foreach (ZipEntry entry in dataStreams)
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146 {
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147 using (Stream dataStream = file.GetInputStream(entry))
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148 {
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149 races.Add(CreateRaceFromStream(file, dataStream));
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150 }
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151 }
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152
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153 return races;
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154 }
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155
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156 protected abstract ICollection<ZipEntry> GetRaceZipEntries(ZipFile file);
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157 protected abstract Race CreateRaceFromStream(ZipFile file, Stream dataStream);
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158
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159 protected ICollection<GameSystem> CreateGameSystemsFromFile(ZipFile file)
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160 {
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161 ICollection<ZipEntry> dataStreams = GetGameSystemZipEntries(file);
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162 ICollection<GameSystem> systems = new List<GameSystem>();
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163
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164 foreach (ZipEntry entry in dataStreams)
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165 {
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166 using (Stream dataStream = file.GetInputStream(entry))
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167 {
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168 systems.Add(CreateGameSystemFromStream(file, dataStream));
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169 }
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170 }
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171
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172 return systems;
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173 }
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174
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175 protected abstract ICollection<ZipEntry> GetGameSystemZipEntries(ZipFile file);
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176 protected abstract GameSystem CreateGameSystemFromStream(ZipFile file, Stream dataStream);
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177
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178 public override bool Equals (object o)
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179 {
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180 if (o == this)
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181 {
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182 return true;
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183 }
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184 else if (o == null || !(this.GetType().Equals(o.GetType())))
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185 {
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186 return false;
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187 }
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188
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189 return true;
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190 }
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191
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192 public override int GetHashCode ()
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193 {
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194 return GetType().FullName.GetHashCode();
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195 }
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196 }
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197 }