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1 /**
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2 * Copyright: Copyright (c) 2010 Jacob Carlborg.
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3 * Authors: Jacob Carlborg
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4 * Version: Initial created: Jan 26, 2010
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5 * License: $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost Software License 1.0)
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6 */
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7 module orange.serialization.Serializer;
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8
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9 version (Tango)
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10 {
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11 import tango.util.Convert : to, ConversionException;
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12 }
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13
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14 import orange.serialization._;
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15 import orange.serialization.archives._;
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16 import orange.util._;
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17
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18 private
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19 {
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20 alias orange.util.CTFE.contains ctfeContains;
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21
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22 private enum Mode
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23 {
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24 serializing,
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25 deserializing
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26 }
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27
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28 alias Mode.serializing serializing;
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29 alias Mode.deserializing deserializing;
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30 }
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31
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32 class Serializer (ArchiveType : IArchive)
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33 {
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34 static assert(isArchive!(ArchiveType), format!(`The type "`, ArchiveType, `" does not implement the necessary methods to be an archive.`));
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35
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36 private
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37 {
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38 ArchiveType archive;
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39 alias ArchiveType.DataType DataType;
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40
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41 RegisterBase[string] serializers;
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42 RegisterBase[string] deserializers;
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43
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44 size_t keyCounter;
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45
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46 bool hasBegunSerializing;
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47 bool hasBegunDeserializing;
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48 }
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49
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50 this ()
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51 {
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52 archive = new ArchiveType;
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53 }
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54
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55 void registerSerializer (T) (string type, void delegate (T, Serializer, DataType) dg)
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56 {
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57 serializers[type] = toSerializeRegisterWrapper(dg);
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58 }
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59
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60 void registerSerializer (T) (string type, void function (T, Serializer, DataType) func)
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61 {
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62 serializers[type] = toSerializeRegisterWrapper(func);
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63 }
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64
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65 void registerDeserializer (T) (string type, void delegate (ref T, Serializer, DataType) dg)
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66 {
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67 deserializers[type] = toDeserializeRegisterWrapper(dg);
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68 }
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69
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70 void registerDeserializer (T) (string type, void function (ref T, Serializer, DataType) func)
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71 {
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72 deserializers[type] = toDeserializeRegisterWrapper(func);
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73 }
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74
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75 void reset ()
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76 {
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77 hasBegunSerializing = false;
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78 hasBegunDeserializing = false;
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79 resetCounters();
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80
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81 archive.reset;
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82 }
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83
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84 DataType serialize (T) (T value, DataType key = null)
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85 {
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86 if (!hasBegunSerializing)
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87 hasBegunSerializing = true;
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88
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89 if (!key)
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90 key = nextKey;
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91
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92 archive.beginArchiving();
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93
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94 static if (isTypeDef!(T))
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95 serializeTypeDef(value, key);
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96
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97 static if (isObject!(T))
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98 serializeObject(value, key);
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99
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100 else static if (isStruct!(T))
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101 serializeStruct(value, key);
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102
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103 else static if (isString!(T))
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104 serializeString(value, key);
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105
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106 else static if (isArray!(T))
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107 serializeArray(value, key);
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108
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109 else static if (isAssociativeArray!(T))
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110 serializeAssociativeArray(value, key);
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111
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112 else static if (isPrimitive!(T))
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113 serializePrimitive(value, key);
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114
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115 else static if (isPointer!(T))
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116 {
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117 static if (isFunctionPointer!(T))
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118 static assert(false, format!(`The type "`, T, `" cannot be serialized.`));
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119
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120 else
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121 serializePointer(value, key);
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122 }
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123
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124
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125 else static if (isEnum!(T))
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126 serializeEnum(value, key);
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127
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128 else
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129 static assert(false, format!(`The type "`, T, `" cannot be serialized.`));
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130
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131 return archive.data;
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132 }
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133
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134 private void serializeObject (T) (T value, DataType key)
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135 {
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136 auto nonSerializedFields = collectAnnotations!(nonSerializedField)(value);
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137
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138 triggerEvents(serializing, value, {
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139 archive.archive(value, key, {
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140 auto runtimeType = value.classinfo.name;
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141
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142 if (runtimeType in serializers)
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143 {
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144 auto wrapper = getSerializerWrapper!(T)(runtimeType);
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145 wrapper(value, this, key);
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146 }
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147
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148 else static if (isSerializable!(T, ArchiveType))
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149 value.toData(this, key);
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150
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151 else
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152 {
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153 if (isBaseClass(value))
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154 throw new SerializationException(`The object of the static type "` ~ T.stringof ~ `" have a different runtime type (` ~ runtimeType ~ `) and therefore needs to register a serializer for its type "` ~ runtimeType ~ `".`, __FILE__, __LINE__);
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155
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156 objectStructSerializeHelper(value, nonSerializedFields);
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157 }
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158 });
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159 });
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160 }
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161
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162 private void serializeStruct (T) (T value, DataType key)
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163 {
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164 auto nonSerializedFields = collectAnnotations!(nonSerializedField)(value);
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165
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166 triggerEvents(serializing, value, {
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167 archive.archive(value, key, {
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168 auto type = toDataType(T.stringof);
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169
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170 if (type in serializers)
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171 {
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172 auto wrapper = getSerializerWrapper!(T)(type);
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173 wrapper(value, this, key);
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174 }
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175
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176 else
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177 {
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178 static if (isSerializable!(T, ArchiveType))
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179 value.toData(this, key);
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180
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181 else
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182 objectStructSerializeHelper(value, nonSerializedFields);
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183 }
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184 });
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185 });
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186 }
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187
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188 private void serializeString (T) (T value, DataType key)
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189 {
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190 archive.archive(value, key);
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191 }
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192
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193 private void serializeArray (T) (T value, DataType key)
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194 {
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195 archive.archive(value, key, {
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196 foreach (i, e ; value)
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197 archive.archive(e, toDataType(i));
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198 });
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199 }
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200
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201 private void serializeAssociativeArray (T) (T value, DataType key)
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202 {
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203 archive.archive(value, key, {
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204 foreach(k, v ; value)
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205 archive.archive(v, toDataType(k));
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206 });
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207 }
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208
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209 private void serializePointer (T) (T value, DataType key)
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210 {
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211 archive.archive(value, key, {
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212 if (key in serializers)
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213 {
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214 auto wrapper = getSerializerWrapper!(T)(key);
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215 wrapper(value, this, key);
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216 }
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217
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218 else static if (isSerializable!(T, ArchiveType))
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219 value.toData(this, key);
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220
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221 else
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222 {
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223 static if (isVoid!(BaseTypeOfPointer!(T)))
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224 throw new SerializationException(`The value with the key "` ~ to!(string)(key) ~ `"` ~ format!(` of the type "`, T, `" cannot be serialized on its own, either implement orange.serialization.Serializable.isSerializable or register a serializer.`), __FILE__, __LINE__);
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225
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226 else
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227 serialize(*value, key);
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228 }
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229 });
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230 }
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231
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232 private void serializeEnum (T) (T value, DataType key)
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233 {
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234 archive.archive(value, key);
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235 }
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236
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237 private void serializePrimitive (T) (T value, DataType key)
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238 {
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239 archive.archive(value, key);
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240 }
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241
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242 private void serializeTypeDef (T) (T value, DataType key)
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243 {
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244 archive.archive(value, key, {
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245 serialize!(BaseTypeOfTypeDef!(T))(value, key);
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246 });
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247 }
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248
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249 T deserialize (T) (DataType data, DataType key = null)
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250 {
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251 if (hasBegunSerializing && !hasBegunDeserializing)
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252 resetCounters();
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253
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254 if (!hasBegunDeserializing)
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255 hasBegunDeserializing = true;
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256
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257 if (!key)
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258 key = nextKey;
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259
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260 archive.beginUnarchiving(data);
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261 return deserializeInternal!(T)(key);
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262 }
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263
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264 private T deserializeInternal (T) (DataType key)
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265 {
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266 static if (isTypeDef!(T))
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267 return deserializeTypeDef!(T)(key);
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268
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269 else static if (isObject!(T))
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270 return deserializeObject!(T)(key);
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271
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272 else static if (isStruct!(T))
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273 return deserializeStruct!(T)(key);
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274
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275 else static if (isString!(T))
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276 return deserializeString!(T)(key);
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277
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278 else static if (isArray!(T))
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279 return deserializeArray!(T)(key);
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280
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281 else static if (isAssociativeArray!(T))
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282 return deserializeAssociativeArray!(T)(key);
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283
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284 else static if (isPrimitive!(T))
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285 return deserializePrimitive!(T)(key);
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286
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287 else static if (isPointer!(T))
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288 return deserializePointer!(T)(key);
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289
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290 else static if (isEnum!(T))
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291 return deserializeEnum!(T)(key);
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292
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293 else
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294 static assert(false, format!(`The type "`, T, `" cannot be deserialized.`));
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295 }
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296
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297 private T deserializeObject (T) (DataType key)
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298 {
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299 T value = archive.unarchive!(T)(key, (T value) {
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300 auto nonSerializedFields = collectAnnotations!(nonSerializedField)(value);
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301
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302 triggerEvents(deserializing, value, {
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303 auto runtimeType = value.classinfo.name;
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304
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305 if (runtimeType in deserializers)
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306 {
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307 auto wrapper = getDeserializerWrapper!(T)(runtimeType);
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308 wrapper(value, this, key);
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309 }
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310
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311 else static if (isSerializable!(T, ArchiveType))
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312 value.fromData(this, key);
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313
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314 else
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315 {
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316 if (isBaseClass(value))
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317 throw new SerializationException(`The object of the static type "` ~ T.stringof ~ `" have a different runtime type (` ~ runtimeType ~ `) and therefore needs to register a deserializer for its type "` ~ runtimeType ~ `".`, __FILE__, __LINE__);
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318
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319 objectStructDeserializeHelper(value, nonSerializedFields);
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320 }
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321 });
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322
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323 return value;
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324 });
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325
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326 return value;
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327 }
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328
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329 private T deserializeStruct (T) (DataType key)
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330 {
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331 return archive.unarchive!(T)(key, (T value) {
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332 auto nonSerializedFields = collectAnnotations!(nonSerializedField)(value);
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333
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334 triggerEvents(deserializing, value, {
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335 auto type = toDataType(T.stringof);
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336
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337 if (type in deserializers)
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338 {
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339 auto wrapper = getDeserializerWrapper!(T)(type);
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340 wrapper(value, this, key);
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341 }
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342
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343 else
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344 {
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345 static if (isSerializable!(T, ArchiveType))
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346 value.fromData(this, key);
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347
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348 else
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349 objectStructDeserializeHelper(value, nonSerializedFields);
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350 }
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351 });
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352
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353 return value;
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354 });
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355 }
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356
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357 private T deserializeString (T) (DataType key)
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358 {
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359 return archive.unarchive!(T)(key);
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360 }
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361
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362 private T deserializeArray (T) (DataType key)
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363 {
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364 return archive.unarchive!(T)(key, (T value) {
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365 foreach (i, ref e ; value)
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366 e = archive.unarchive!(typeof(e))(toDataType(i));
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367
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368 return value;
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369 });
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370 }
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371
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372 private T deserializeAssociativeArray (T) (DataType key)
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373 {
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374 return archive.unarchive!(T)(key, (T value) {
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375 foreach (k, v ; archive.unarchiveAssociativeArrayVisitor!(T))
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376 value[k] = v;
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377
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378 return value;
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379 });
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380 }
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381
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382 private T deserializePointer (T) (DataType key)
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383 {
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384 return archive.unarchive!(T)(key, (T value) {
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385 if (key in deserializers)
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386 {
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387 auto wrapper = getDeserializerWrapper!(T)(key);
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388 wrapper(value, this, key);
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389 }
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390
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391 else static if (isSerializable!(T, ArchiveType))
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392 value.fromData(this, key);
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393
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394 else
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395 {
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396 static if (isVoid!(BaseTypeOfPointer!(T)))
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397 throw new SerializationException(`The value with the key "` ~ to!(string)(key) ~ `"` ~ format!(` of the type "`, T, `" cannot be deserialized on its own, either implement orange.serialization.Serializable.isSerializable or register a deserializer.`), __FILE__, __LINE__);
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398
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399 else
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400 *value = deserializeInternal!(BaseTypeOfPointer!(T))(key);
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401 }
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402
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403 return value;
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404 });
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405 }
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406
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407 private T deserializeEnum (T) (DataType key)
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408 {
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409 return archive.unarchive!(T)(key);
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410 }
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411
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412 private T deserializePrimitive (T) (DataType key)
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413 {
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414 return archive.unarchive!(T)(key);
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415 }
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416
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417 private T deserializeTypeDef (T) (DataType key)
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418 {
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419 return archive.unarchive!(T)(key, (T value) {
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420 return deserializeInternal!(BaseTypeOfTypeDef!(T))(key);
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421 });
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422 }
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423
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424 private void objectStructSerializeHelper (T) (T value, string[] nonSerializedFields)
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425 {
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426 foreach (i, dummy ; typeof(T.tupleof))
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427 {
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428 const field = nameOfFieldAt!(T, i);
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429
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430 if (!internalFields.ctfeContains(field) && !nonSerializedFields.ctfeContains(field))
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431 {
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432 alias typeof(T.tupleof[i]) Type;
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433
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434 Type v = value.tupleof[i];
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435
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436 //Type v = getValueOfField!(T, Type, field)(value);
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437 serialize(v, toDataType(field));
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438 }
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439 }
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440
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441 static if (is(T : Object) && !is(T == Object))
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442 serializeBaseTypes(value, nonSerializedFields);
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443 }
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444
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445 private void objectStructDeserializeHelper (T) (T value, string[] nonSerializedFields)
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446 {
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447 foreach (i, dummy ; typeof(T.tupleof))
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448 {
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449 const field = nameOfFieldAt!(T, i);
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450
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451 if (!internalFields.ctfeContains(field) && !nonSerializedFields.ctfeContains(field))
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452 {
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453 alias TypeOfField!(T, field) Type;
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454 auto fieldValue = deserializeInternal!(Type)(toDataType(field));
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455 setValueOfField!(T, Type, field)(value, fieldValue);
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456 }
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457 }
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458
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459 static if (is(T : Object) && !is(T == Object))
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460 deserializeBaseTypes(value, nonSerializedFields);
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461 }
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462
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463 private void serializeBaseTypes (T : Object) (T value, string[] nonSerializedFields)
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464 {
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465 alias BaseTypeTupleOf!(T)[0] Base;
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466
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467 static if (!is(Base == Object))
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468 {
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469 archive.archiveBaseClass!(Base)(nextKey);
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470 objectStructSerializeHelper!(Base)(value, nonSerializedFields);
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471 }
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472 }
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473
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474 private void deserializeBaseTypes (T : Object) (T value, string[] nonSerializedFields)
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475 {
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476 alias BaseTypeTupleOf!(T)[0] Base;
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477
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478 static if (!is(Base == Object))
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479 {
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480 archive.unarchiveBaseClass!(Base)(nextKey);
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481 objectStructDeserializeHelper!(Base)(value, nonSerializedFields);
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482 }
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483 }
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484
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485 private SerializeRegisterWrapper!(T, ArchiveType) getSerializerWrapper (T) (string type)
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486 {
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487 auto wrapper = cast(SerializeRegisterWrapper!(T, ArchiveType)) serializers[type];
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488
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489 if (wrapper)
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490 return wrapper;
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491
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492 assert(false, "throw exception here");
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493 }
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494
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|
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495 private DeserializeRegisterWrapper!(T, ArchiveType) getDeserializerWrapper (T) (string type)
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496 {
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497 auto wrapper = cast(DeserializeRegisterWrapper!(T, ArchiveType)) deserializers[type];
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498
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499 if (wrapper)
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|
500 return wrapper;
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|
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501
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502 assert(false, "throw exception here");
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503 }
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504
|
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505 private SerializeRegisterWrapper!(T, ArchiveType) toSerializeRegisterWrapper (T) (void delegate (T, Serializer, DataType) dg)
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506 {
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|
|
507 return new SerializeRegisterWrapper!(T, ArchiveType)(dg);
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|
|
508 }
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|
|
509
|
|
|
510 private SerializeRegisterWrapper!(T, ArchiveType) toSerializeRegisterWrapper (T) (void function (T, Serializer, DataType) func)
|
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|
511 {
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|
|
512 return new SerializeRegisterWrapper!(T, ArchiveType)(func);
|
|
|
513 }
|
|
|
514
|
|
|
515 private DeserializeRegisterWrapper!(T, ArchiveType) toDeserializeRegisterWrapper (T) (void delegate (ref T, Serializer, DataType) dg)
|
|
|
516 {
|
|
|
517 return new DeserializeRegisterWrapper!(T, ArchiveType)(dg);
|
|
|
518 }
|
|
|
519
|
|
|
520 private DeserializeRegisterWrapper!(T, ArchiveType) toDeserializeRegisterWrapper (T) (void function (ref T, Serializer, DataType) func)
|
|
|
521 {
|
|
|
522 return new DeserializeRegisterWrapper!(T, ArchiveType)(func);
|
|
|
523 }
|
|
|
524
|
|
|
525 private DataType toDataType (T) (T value)
|
|
|
526 {
|
|
|
527 try
|
|
|
528 return to!(DataType)(value);
|
|
|
529
|
|
|
530 catch (ConversionException e)
|
|
|
531 throw new SerializationException(e);
|
|
|
532 }
|
|
|
533
|
|
|
534 private bool isBaseClass (T) (T value)
|
|
|
535 {
|
|
|
536 auto name = value.classinfo.name;
|
|
|
537 auto index = name.lastIndexOf('.');
|
|
|
538
|
|
|
539 return T.stringof != name[index + 1 .. $];
|
|
|
540 }
|
|
|
541
|
|
|
542 private DataType nextKey ()
|
|
|
543 {
|
|
|
544 return toDataType(keyCounter++);
|
|
|
545 }
|
|
|
546
|
|
|
547 private void resetCounters ()
|
|
|
548 {
|
|
|
549 keyCounter = 0;
|
|
|
550 }
|
|
|
551
|
|
|
552 private void triggerEvent (string name, T) (T value)
|
|
|
553 {
|
|
|
554 static assert (is(T == class) || is(T == struct), format!(`The given value of the type "`, T, `" is not a valid type, the only valid types for this method are classes and structs.`));
|
|
|
555
|
|
|
556 foreach (i, dummy ; typeof(T.tupleof))
|
|
|
557 {
|
|
|
558 const field = nameOfFieldAt!(T, i);
|
|
|
559
|
|
|
560 static if (field == name)
|
|
|
561 {
|
|
|
562 alias TypeOfField!(T, field) Type;
|
|
|
563 auto event = getValueOfField!(T, Type, field)(value);
|
|
|
564 event(value);
|
|
|
565 }
|
|
|
566 }
|
|
|
567 }
|
|
|
568
|
|
|
569 private void triggerEvents (T) (Mode mode, T value, void delegate () dg)
|
|
|
570 {
|
|
|
571 if (mode == serializing)
|
|
|
572 triggerEvent!(onSerializingField)(value);
|
|
|
573
|
|
|
574 else
|
|
|
575 triggerEvent!(onDeserializingField)(value);
|
|
|
576
|
|
|
577 dg();
|
|
|
578
|
|
|
579 if (mode == serializing)
|
|
|
580 triggerEvent!(onSerializedField)(value);
|
|
|
581
|
|
|
582 else
|
|
|
583 triggerEvent!(onDeserializedField)(value);
|
|
|
584 }
|
|
|
585
|
|
|
586 private string[] collectAnnotations (string name, T) (T value)
|
|
|
587 {
|
|
|
588 static assert (is(T == class) || is(T == struct), format!(`The given value of the type "`, T, `" is not a valid type, the only valid types for this method are classes and structs.`));
|
|
|
589
|
|
|
590 string[] annotations;
|
|
|
591
|
|
|
592 foreach (i, dummy ; typeof(T.tupleof))
|
|
|
593 {
|
|
|
594 const field = nameOfFieldAt!(T, i);
|
|
|
595
|
|
|
596 static if (field == name)
|
|
|
597 {
|
|
|
598 alias TypeOfField!(T, field) Type;
|
|
|
599 auto f = getValueOfField!(T, Type, field)(value);
|
|
|
600 annotations ~= f.field;
|
|
|
601 }
|
|
|
602 }
|
|
|
603
|
|
|
604 return annotations;
|
|
|
605 }
|
|
|
606 } |
