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annotate orange/util/Traits.d @ 27:fc315d786f24 experimental

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Added unit testing.
author Jacob Carlborg <doob@me.com>
date Fri, 19 Nov 2010 11:14:55 +0100
parents 78e5fef4bbf2
children 301476d40518
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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.util.Traits;
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8
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9 import orange.serialization.Serializable;
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10 import orange.serialization.archives.Archive;
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11 import orange.util._;
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12
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13 version (Tango)
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14 {
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15 import Tango = tango.core.Traits;
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16 alias Tango.BaseTypeTupleOf BaseTypeTupleOf;
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17 alias Tango.ParameterTupleOf ParameterTupleOf;
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18 alias Tango.ReturnTypeOf ReturnTypeOf;
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19 }
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20
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21 else
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22 {
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23 import Phobos = std.traits;
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24 alias Phobos.BaseTypeTuple BaseTypeTupleOf;
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25 alias Phobos.ParameterTypeTuple ParameterTupleOf;
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26 alias Phobos.ReturnType ReturnTypeOf;
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27
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28 version = Phobos;
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29 }
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30
27
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31 import orange.core.string;
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32
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33 template isPrimitive (T)
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34 {
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35 const bool isPrimitive = is(T == bool) ||
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36 is(T == byte) ||
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37 is(T == cdouble) ||
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38 //is(T == cent) ||
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39 is(T == cfloat) ||
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40 is(T == char) ||
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41 is(T == creal) ||
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42 is(T == dchar) ||
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43 is(T == double) ||
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44 is(T == float) ||
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45 is(T == idouble) ||
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46 is(T == ifloat) ||
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47 is(T == int) ||
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48 is(T == ireal) ||
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49 is(T == long) ||
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50 is(T == real) ||
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51 is(T == short) ||
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52 is(T == ubyte) ||
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53 //is(T == ucent) ||
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54 is(T == uint) ||
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55 is(T == ulong) ||
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56 is(T == ushort) ||
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57 is(T == wchar);
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58 }
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59
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60 template isChar (T)
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61 {
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62 const bool isChar = is(T == char) || is(T == wchar) || is(T == dchar);
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63 }
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64
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65 template isClass (T)
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66 {
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67 const bool isClass = is(T == class);
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68 }
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69
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70 template isInterface (T)
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71 {
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72 const bool isInterface = is(T == interface);
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73 }
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74
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75 template isObject (T)
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76 {
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77 const bool isObject = isClass!(T) || isInterface!(T);
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78 }
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79
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80 template isStruct (T)
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81 {
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82 const bool isStruct = is(T == struct);
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83 }
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84
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85 template isArray (T)
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86 {
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87 static if (is(T U : U[]))
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88 const bool isArray = true;
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89
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90 else
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91 const bool isArray = false;
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92 }
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93
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94 template isString (T)
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95 {
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96 const bool isString = is(T : string) || is(T : wstring) || is(T : dstring);
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97 }
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98
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99 template isAssociativeArray (T)
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100 {
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101 const bool isAssociativeArray = is(typeof(T.init.values[0])[typeof(T.init.keys[0])] == T);
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102 }
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103
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104 template isPointer (T)
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105 {
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106 static if (is(T U : U*))
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107 const bool isPointer = true;
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108
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109 else
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110 const bool isPointer = false;
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111 }
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112
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113 template isFunctionPointer (T)
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114 {
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115 const bool isFunctionPointer = is(typeof(*T) == function);
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116 }
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117
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118 template isEnum (T)
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119 {
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120 const bool isEnum = is(T == enum);
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121 }
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122
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123 template isReference (T)
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124 {
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125 const bool isReference = isObject!(T) || isPointer!(T);
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126 }
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127
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128 template isTypedef (T)
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129 {
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130 const bool isTypedef = is(T == typedef);
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131 }
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132
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133 template isVoid (T)
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134 {
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135 const bool isVoid = is(T == void);
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136 }
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137
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138 template ElementTypeOfArray(T : T[])
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139 {
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140 alias T ElementTypeOfArray;
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141 }
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142
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143 template BaseTypeOfPointer (T)
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144 {
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145 static if (is(T U : U*))
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146 alias BaseTypeOfPointer!(U) BaseTypeOfPointer;
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147
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148 else
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149 alias T BaseTypeOfPointer;
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150 }
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151
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152 template BaseTypeOfTypedef (T)
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153 {
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154 static if (is(T U == typedef))
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155 alias BaseTypeOfTypedef!(U) BaseTypeOfTypedef;
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156
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157 else
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158 alias T BaseTypeOfTypedef;
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159 }
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160
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161 template BaseTypeOfEnum (T)
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162 {
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163 static if (is(T U == enum))
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164 alias BaseTypeOfEnum!(U) BaseTypeOfEnum;
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165
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166 else
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167 alias T BaseTypeOfEnum;
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168 }
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169
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170 template KeyTypeOfAssociativeArray (T)
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171 {
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172 static assert(isAssociativeArray!(T), "The type needs to be an associative array");
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173 alias typeof(T.init.keys[0]) KeyTypeOfAssociativeArray;
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174 }
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175
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176 template ValueTypeOfAssociativeArray (T)
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177 {
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178 static assert(isAssociativeArray!(T), "The type needs to be an associative array");
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179 alias typeof(T.init.values[0]) ValueTypeOfAssociativeArray;
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180 }
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181
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182 template isArchive (T)
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183 {
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184 const isArchive = is(typeof({
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185 alias T.DataType Foo;
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186 })) &&
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187
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188 is(typeof(T.archive(0, TypeOfDataType!(T).init, {}))) &&
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189 is(typeof(T.unarchive!(int))) &&
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190 is(typeof(T.beginArchiving)) &&
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191 is(typeof(T.beginUnarchiving(TypeOfDataType!(T).init))) &&
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192 is(typeof(T.archiveBaseClass!(Object))) &&
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193 is(typeof(T.unarchiveBaseClass!(Object))) &&
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194 is(typeof(T.reset)) &&
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195 is(typeof({TypeOfDataType!(T) a = T.data;})) &&
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196 is(typeof(T.unarchiveAssociativeArrayVisitor!(int[string])));
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197
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198 }
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199
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200 template isSerializable (T, SerializerType)
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201 {
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202 const isSerializable = is(typeof(T.toData(SerializerType.init, SerializerType.DataType.init))) && is(typeof(T.fromData(SerializerType.init, SerializerType.DataType.init)));
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203 }
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204
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205 template isISerializable (T)
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206 {
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207 const isISerializable = is(T : ISerializable);
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208 }
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209
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210 template TypeOfDataType (T)
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211 {
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212 alias T.DataType TypeOfDataType;
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213 }