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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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2
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118 goto error;
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0
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119
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120 else
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121 serializePointer(value, key);
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2
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122 }
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0
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123
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124 else static if (isEnum!(T))
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125 serializeEnum(value, key);
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126
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127 else
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2
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128 {
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129 error:
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130 throw new SerializationException(format!(`The type "`, T, `" cannot be serialized.`), __FILE__, __LINE__);
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131 }
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0
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132
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133 return archive.data;
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134 }
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135
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136 private void serializeObject (T) (T value, DataType key)
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2
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137 {
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0
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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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2
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156 objectStructSerializeHelper(value);
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0
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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 triggerEvents(serializing, value, {
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165 archive.archive(value, key, {
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166 auto type = toDataType(T.stringof);
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167
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168 if (type in serializers)
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169 {
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170 auto wrapper = getSerializerWrapper!(T)(type);
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171 wrapper(value, this, key);
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172 }
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173
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174 else
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175 {
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176 static if (isSerializable!(T, ArchiveType))
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177 value.toData(this, key);
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178
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179 else
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2
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180 objectStructSerializeHelper(value);
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0
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181 }
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182 });
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183 });
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184 }
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185
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186 private void serializeString (T) (T value, DataType key)
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187 {
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188 archive.archive(value, key);
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189 }
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190
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191 private void serializeArray (T) (T value, DataType key)
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192 {
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193 archive.archive(value, key, {
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194 foreach (i, e ; value)
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195 archive.archive(e, toDataType(i));
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196 });
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197 }
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198
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199 private void serializeAssociativeArray (T) (T value, DataType key)
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200 {
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201 archive.archive(value, key, {
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202 foreach(k, v ; value)
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203 archive.archive(v, toDataType(k));
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204 });
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205 }
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206
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207 private void serializePointer (T) (T value, DataType key)
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208 {
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209 archive.archive(value, key, {
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210 if (key in serializers)
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211 {
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212 auto wrapper = getSerializerWrapper!(T)(key);
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213 wrapper(value, this, key);
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214 }
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215
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216 else static if (isSerializable!(T, ArchiveType))
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217 value.toData(this, key);
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218
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219 else
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220 {
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221 static if (isVoid!(BaseTypeOfPointer!(T)))
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222 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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223
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224 else
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225 serialize(*value, key);
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226 }
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227 });
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228 }
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229
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230 private void serializeEnum (T) (T value, DataType key)
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231 {
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232 archive.archive(value, key);
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233 }
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234
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235 private void serializePrimitive (T) (T value, DataType key)
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236 {
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237 archive.archive(value, key);
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238 }
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239
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240 private void serializeTypeDef (T) (T value, DataType key)
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241 {
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242 archive.archive(value, key, {
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243 serialize!(BaseTypeOfTypeDef!(T))(value, key);
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244 });
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245 }
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246
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247 T deserialize (T) (DataType data, DataType key = null)
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248 {
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249 if (hasBegunSerializing && !hasBegunDeserializing)
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250 resetCounters();
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251
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252 if (!hasBegunDeserializing)
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253 hasBegunDeserializing = true;
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254
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255 if (!key)
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256 key = nextKey;
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257
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258 archive.beginUnarchiving(data);
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259 return deserializeInternal!(T)(key);
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260 }
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261
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262 private T deserializeInternal (T) (DataType key)
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263 {
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264 static if (isTypeDef!(T))
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265 return deserializeTypeDef!(T)(key);
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266
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267 else static if (isObject!(T))
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268 return deserializeObject!(T)(key);
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269
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270 else static if (isStruct!(T))
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271 return deserializeStruct!(T)(key);
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272
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273 else static if (isString!(T))
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274 return deserializeString!(T)(key);
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275
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276 else static if (isArray!(T))
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277 return deserializeArray!(T)(key);
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278
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279 else static if (isAssociativeArray!(T))
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280 return deserializeAssociativeArray!(T)(key);
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281
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282 else static if (isPrimitive!(T))
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283 return deserializePrimitive!(T)(key);
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284
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285 else static if (isPointer!(T))
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2
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286 {
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287 static if (isFunctionPointer!(T))
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288 goto error;
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289
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0
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290 return deserializePointer!(T)(key);
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2
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291 }
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0
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292
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293 else static if (isEnum!(T))
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294 return deserializeEnum!(T)(key);
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295
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296 else
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2
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297 {
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298 error:
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299 throw new SerializationException(format!(`The type "`, T, `" cannot be deserialized.`), __FILE__, __LINE__);
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300 }
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0
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301 }
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302
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303 private T deserializeObject (T) (DataType key)
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304 {
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2
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305 T value = archive.unarchive!(T)(key, (T value) {
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0
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306 triggerEvents(deserializing, value, {
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307 auto runtimeType = value.classinfo.name;
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308
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309 if (runtimeType in deserializers)
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310 {
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311 auto wrapper = getDeserializerWrapper!(T)(runtimeType);
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312 wrapper(value, this, key);
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313 }
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314
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315 else static if (isSerializable!(T, ArchiveType))
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316 value.fromData(this, key);
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317
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318 else
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319 {
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320 if (isBaseClass(value))
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321 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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322
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2
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323 objectStructDeserializeHelper(value);
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0
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324 }
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325 });
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326
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327 return value;
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328 });
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329
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330 return value;
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331 }
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332
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333 private T deserializeStruct (T) (DataType key)
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334 {
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335 return archive.unarchive!(T)(key, (T value) {
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336 triggerEvents(deserializing, value, {
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337 auto type = toDataType(T.stringof);
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338
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339 if (type in deserializers)
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340 {
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341 auto wrapper = getDeserializerWrapper!(T)(type);
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342 wrapper(value, this, key);
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343 }
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344
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345 else
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346 {
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347 static if (isSerializable!(T, ArchiveType))
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348 value.fromData(this, key);
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349
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350 else
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2
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351 objectStructDeserializeHelper(value);
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0
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352 }
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353 });
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354
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355 return value;
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356 });
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357 }
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358
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359 private T deserializeString (T) (DataType key)
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360 {
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361 return archive.unarchive!(T)(key);
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362 }
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363
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364 private T deserializeArray (T) (DataType key)
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365 {
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366 return archive.unarchive!(T)(key, (T value) {
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367 foreach (i, ref e ; value)
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368 e = archive.unarchive!(typeof(e))(toDataType(i));
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369
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370 return value;
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371 });
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372 }
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373
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374 private T deserializeAssociativeArray (T) (DataType key)
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375 {
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376 return archive.unarchive!(T)(key, (T value) {
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377 foreach (k, v ; archive.unarchiveAssociativeArrayVisitor!(T))
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378 value[k] = v;
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379
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380 return value;
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381 });
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382 }
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383
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384 private T deserializePointer (T) (DataType key)
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385 {
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386 return archive.unarchive!(T)(key, (T value) {
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387 if (key in deserializers)
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388 {
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389 auto wrapper = getDeserializerWrapper!(T)(key);
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390 wrapper(value, this, key);
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391 }
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392
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393 else static if (isSerializable!(T, ArchiveType))
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394 value.fromData(this, key);
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395
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396 else
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397 {
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398 static if (isVoid!(BaseTypeOfPointer!(T)))
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399 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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400
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401 else
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402 *value = deserializeInternal!(BaseTypeOfPointer!(T))(key);
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403 }
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404
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405 return value;
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406 });
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407 }
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408
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409 private T deserializeEnum (T) (DataType key)
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410 {
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411 return archive.unarchive!(T)(key);
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412 }
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413
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414 private T deserializePrimitive (T) (DataType key)
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415 {
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416 return archive.unarchive!(T)(key);
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417 }
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418
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419 private T deserializeTypeDef (T) (DataType key)
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420 {
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421 return archive.unarchive!(T)(key, (T value) {
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422 return deserializeInternal!(BaseTypeOfTypeDef!(T))(key);
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423 });
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424 }
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425
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2
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426 private void objectStructSerializeHelper (T) (T value)
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0
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427 {
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2
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428 const nonSerializedFields = collectAnnotations!(nonSerializedField)(value);
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429
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0
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430 foreach (i, dummy ; typeof(T.tupleof))
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431 {
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432 const field = nameOfFieldAt!(T, i);
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433
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2
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434 static if (!internalFields.ctfeContains(field) && !nonSerializedFields.ctfeContains(field))
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0
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435 {
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2
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436 alias typeof(T.tupleof[i]) Type;
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0
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437 Type v = value.tupleof[i];
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438 serialize(v, toDataType(field));
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439 }
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440 }
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441
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442 static if (is(T : Object) && !is(T == Object))
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2
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443 serializeBaseTypes(value);
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0
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444 }
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445
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2
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446 private void objectStructDeserializeHelper (T) (T value)
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0
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447 {
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2
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448 const nonSerializedFields = collectAnnotations!(nonSerializedField)(value);
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449
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0
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450 foreach (i, dummy ; typeof(T.tupleof))
|
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451 {
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452 const field = nameOfFieldAt!(T, i);
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|
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453
|
|
2
|
454 static if (!internalFields.ctfeContains(field) && !nonSerializedFields.ctfeContains(field))
|
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455 {
|
|
0
|
456 alias TypeOfField!(T, field) Type;
|
|
2
|
457 auto fieldValue = deserializeInternal!(Type)(toDataType(field));
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|
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458 value.tupleof[i] = fieldValue;
|
|
0
|
459 }
|
|
|
460 }
|
|
|
461
|
|
|
462 static if (is(T : Object) && !is(T == Object))
|
|
2
|
463 deserializeBaseTypes(value);
|
|
0
|
464 }
|
|
|
465
|
|
2
|
466 private void serializeBaseTypes (T : Object) (T value)
|
|
0
|
467 {
|
|
|
468 alias BaseTypeTupleOf!(T)[0] Base;
|
|
|
469
|
|
|
470 static if (!is(Base == Object))
|
|
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471 {
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|
|
472 archive.archiveBaseClass!(Base)(nextKey);
|
|
2
|
473 objectStructSerializeHelper!(Base)(value);
|
|
0
|
474 }
|
|
|
475 }
|
|
|
476
|
|
2
|
477 private void deserializeBaseTypes (T : Object) (T value)
|
|
0
|
478 {
|
|
|
479 alias BaseTypeTupleOf!(T)[0] Base;
|
|
|
480
|
|
|
481 static if (!is(Base == Object))
|
|
|
482 {
|
|
|
483 archive.unarchiveBaseClass!(Base)(nextKey);
|
|
2
|
484 objectStructDeserializeHelper!(Base)(value);
|
|
0
|
485 }
|
|
|
486 }
|
|
|
487
|
|
|
488 private SerializeRegisterWrapper!(T, ArchiveType) getSerializerWrapper (T) (string type)
|
|
|
489 {
|
|
|
490 auto wrapper = cast(SerializeRegisterWrapper!(T, ArchiveType)) serializers[type];
|
|
|
491
|
|
|
492 if (wrapper)
|
|
|
493 return wrapper;
|
|
|
494
|
|
|
495 assert(false, "throw exception here");
|
|
|
496 }
|
|
|
497
|
|
|
498 private DeserializeRegisterWrapper!(T, ArchiveType) getDeserializerWrapper (T) (string type)
|
|
|
499 {
|
|
|
500 auto wrapper = cast(DeserializeRegisterWrapper!(T, ArchiveType)) deserializers[type];
|
|
|
501
|
|
|
502 if (wrapper)
|
|
|
503 return wrapper;
|
|
|
504
|
|
|
505 assert(false, "throw exception here");
|
|
|
506 }
|
|
|
507
|
|
|
508 private SerializeRegisterWrapper!(T, ArchiveType) toSerializeRegisterWrapper (T) (void delegate (T, Serializer, DataType) dg)
|
|
|
509 {
|
|
|
510 return new SerializeRegisterWrapper!(T, ArchiveType)(dg);
|
|
|
511 }
|
|
|
512
|
|
|
513 private SerializeRegisterWrapper!(T, ArchiveType) toSerializeRegisterWrapper (T) (void function (T, Serializer, DataType) func)
|
|
|
514 {
|
|
|
515 return new SerializeRegisterWrapper!(T, ArchiveType)(func);
|
|
|
516 }
|
|
|
517
|
|
|
518 private DeserializeRegisterWrapper!(T, ArchiveType) toDeserializeRegisterWrapper (T) (void delegate (ref T, Serializer, DataType) dg)
|
|
|
519 {
|
|
|
520 return new DeserializeRegisterWrapper!(T, ArchiveType)(dg);
|
|
|
521 }
|
|
|
522
|
|
|
523 private DeserializeRegisterWrapper!(T, ArchiveType) toDeserializeRegisterWrapper (T) (void function (ref T, Serializer, DataType) func)
|
|
|
524 {
|
|
|
525 return new DeserializeRegisterWrapper!(T, ArchiveType)(func);
|
|
|
526 }
|
|
|
527
|
|
|
528 private DataType toDataType (T) (T value)
|
|
|
529 {
|
|
|
530 try
|
|
|
531 return to!(DataType)(value);
|
|
|
532
|
|
|
533 catch (ConversionException e)
|
|
|
534 throw new SerializationException(e);
|
|
|
535 }
|
|
|
536
|
|
|
537 private bool isBaseClass (T) (T value)
|
|
|
538 {
|
|
|
539 auto name = value.classinfo.name;
|
|
|
540 auto index = name.lastIndexOf('.');
|
|
|
541
|
|
|
542 return T.stringof != name[index + 1 .. $];
|
|
|
543 }
|
|
|
544
|
|
|
545 private DataType nextKey ()
|
|
|
546 {
|
|
|
547 return toDataType(keyCounter++);
|
|
|
548 }
|
|
|
549
|
|
|
550 private void resetCounters ()
|
|
|
551 {
|
|
|
552 keyCounter = 0;
|
|
|
553 }
|
|
|
554
|
|
|
555 private void triggerEvent (string name, T) (T value)
|
|
|
556 {
|
|
|
557 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.`));
|
|
|
558
|
|
|
559 foreach (i, dummy ; typeof(T.tupleof))
|
|
|
560 {
|
|
|
561 const field = nameOfFieldAt!(T, i);
|
|
|
562
|
|
|
563 static if (field == name)
|
|
|
564 {
|
|
|
565 alias TypeOfField!(T, field) Type;
|
|
|
566 auto event = getValueOfField!(T, Type, field)(value);
|
|
|
567 event(value);
|
|
|
568 }
|
|
|
569 }
|
|
|
570 }
|
|
|
571
|
|
|
572 private void triggerEvents (T) (Mode mode, T value, void delegate () dg)
|
|
|
573 {
|
|
|
574 if (mode == serializing)
|
|
|
575 triggerEvent!(onSerializingField)(value);
|
|
|
576
|
|
|
577 else
|
|
|
578 triggerEvent!(onDeserializingField)(value);
|
|
|
579
|
|
|
580 dg();
|
|
|
581
|
|
|
582 if (mode == serializing)
|
|
|
583 triggerEvent!(onSerializedField)(value);
|
|
|
584
|
|
|
585 else
|
|
|
586 triggerEvent!(onDeserializedField)(value);
|
|
|
587 }
|
|
|
588
|
|
2
|
589 private static string[] collectAnnotations (string name, T) (T value)
|
|
0
|
590 {
|
|
|
591 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.`));
|
|
|
592
|
|
|
593 string[] annotations;
|
|
|
594
|
|
|
595 foreach (i, dummy ; typeof(T.tupleof))
|
|
|
596 {
|
|
|
597 const field = nameOfFieldAt!(T, i);
|
|
|
598
|
|
|
599 static if (field == name)
|
|
|
600 {
|
|
2
|
601 typeof(value.tupleof[i]) f;
|
|
0
|
602 annotations ~= f.field;
|
|
|
603 }
|
|
|
604 }
|
|
|
605
|
|
|
606 return annotations;
|
|
|
607 }
|
|
|
608 } |
