annotate trunk/src/dil/semantic/Types.d @ 617:0749f30ef2d0

Added member 'EnumType type' to class Enum. Added method setType() to Enum. Fixed module name of src/dil/Types.d. Added member enumSymbol to EnumType. Removed 'TypeBasic' from newTB declaration.
author Aziz K?ksal <aziz.koeksal@gmail.com>
date Thu, 10 Jan 2008 19:47:34 +0100
parents a05457530ac2
children 839c0c61af2b
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112c17300069 Added module dil.TypeSystem.
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1 /++
112c17300069 Added module dil.TypeSystem.
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2 Author: Aziz Köksal
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3 License: GPL3
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4 +/
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5 module dil.semantic.Types;
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6
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7 import dil.semantic.Symbols;
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8 import dil.semantic.TypesEnum;
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9 import dil.lexer.Identifier;
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10 import dil.CompilerInfo;
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11
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12 abstract class Type/* : Symbol*/
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13 {
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14 Type next;
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15 TYP tid; /// The ID of the type.
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16
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17 this(){}
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18
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19 this(Type next, TYP tid)
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20 {
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21 // this.sid = SYM.Type;
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22
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23 this.next = next;
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24 this.tid = tid;
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25 }
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26
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27 TypePointer ptrTo()
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28 {
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29 return new TypePointer(this);
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30 }
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31
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32 /// Get byte size of this type.
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33 final size_t sizeOf()
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34 {
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35 return MITable.getSize(this);
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36 }
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37
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38 /// Size is not in MITable. Find out via virtual method.
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39 size_t sizeOf_()
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40 {
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41 return sizeOf();
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42 }
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43 }
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44
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45 class TypeBasic : Type
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46 {
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47 this(TYP typ)
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48 {
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49 super(null, typ);
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50 }
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51 }
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52
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53 class TypeDArray : Type
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54 {
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55 this(Type next)
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56 {
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57 super(next, TYP.DArray);
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58 }
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59 }
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60
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61 class TypeAArray : Type
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62 {
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63 Type keyType;
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64 this(Type next, Type keyType)
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65 {
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66 super(next, TYP.AArray);
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67 this.keyType = keyType;
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68 }
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69 }
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70
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71 class TypeSArray : Type
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72 {
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73 size_t dimension;
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74 this(Type next, size_t dimension)
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75 {
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76 super(next, TYP.SArray);
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77 this.dimension = dimension;
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78 }
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79 }
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80
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81 class TypePointer : Type
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82 {
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83 this(Type next)
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84 {
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85 super(next, TYP.Pointer);
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86 }
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87 }
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88
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89 class TypeReference : Type
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90 {
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91 this(Type next)
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92 {
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93 super(next, TYP.Reference);
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94 }
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95 }
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96
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97 class EnumType : Type
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98 {
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99 Enum enumSymbol;
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100 this(Enum enumSymbol, Type baseType)
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101 {
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102 super(baseType, TYP.Enum);
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103 this.enumSymbol = enumSymbol;
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104 }
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105
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106 Type baseType()
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107 {
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108 return next;
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109 }
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110 }
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111
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112 class StructType : Type
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113 {
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114 this()
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115 {
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116 super(null, TYP.Struct);
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117 }
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118 }
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119
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120 class ClassType : Type
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121 {
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122 this()
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123 {
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124 super(null, TYP.Class);
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125 }
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126 }
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127
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128 class TypedefType : Type
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129 {
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130 this(Type next)
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131 {
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132 super(next, TYP.Typedef);
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133 }
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134 }
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135
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136 class FunctionType : Type
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137 {
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138 this(Type next)
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139 {
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140 super(next, TYP.Function);
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141 }
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142 }
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143
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144 class DelegateType : Type
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145 {
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146 this(Type next)
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147 {
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148 super(next, TYP.Delegate);
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149 }
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150 }
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151
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152 class IdentifierType : Type
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153 {
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154 Identifier* ident;
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155 this(Identifier* ident)
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156 {
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157 super(null, TYP.Identifier);
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158 }
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159 }
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160
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161 class TInstanceType : Type
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162 {
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163 this()
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164 {
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165 super(null, TYP.TInstance);
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166 }
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167 }
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168
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169 class TupleType : Type
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170 {
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171 this(Type next)
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172 {
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173 super(next, TYP.Tuple);
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174 }
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175 }
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176
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177 class ConstType : Type
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178 {
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179 this(Type next)
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180 {
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181 super(next, TYP.Const);
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182 }
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183 }
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184
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185 class InvariantType : Type
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186 {
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187 this(Type next)
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188 {
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189 super(next, TYP.Const);
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190 }
512
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191 }
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192
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193 /// Represents a value related to a type.
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194 union Value
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195 {
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196 void* pvoid;
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197 bool bool_;
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198 dchar dchar_;
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199 long long_;
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200 ulong ulong_;
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201 int int_;
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202 uint uint_;
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203 float float_;
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204 double double_;
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205 real real_;
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206 creal creal_;
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207 }
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208
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209 struct TypeMetaInfo
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210 {
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211 char mangle; /// Mangle character of the type.
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212 ushort size; /// Byte size of the type.
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213 Value* defaultInit; /// Default initialization value.
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214 }
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215
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216 struct MITable
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217 {
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218 static:
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219 const ushort SIZE_NOT_AVAILABLE = 0; /// Size not available.
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220 const Value VZERO = {int_:0}; /// Value 0.
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221 const Value VNULL = {pvoid:null}; /// Value null.
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222 const Value V0xFF = {dchar_:0xFF}; /// Value 0xFF.
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223 const Value V0xFFFF = {dchar_:0xFFFF}; /// Value 0xFFFF.
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224 const Value VFALSE = {bool_:false}; /// Value false.
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225 const Value VNAN = {float_:float.nan}; /// Value NAN.
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226 const Value VCNAN = {creal_:creal.nan}; /// Value complex NAN.
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227 private alias SIZE_NOT_AVAILABLE SNA;
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228 private alias PTR_SIZE PS;
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229 private const TypeMetaInfo metaInfoTable[] = [
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230 {'?', SNA}, // Error
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231
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232 {'a', 1, &V0xFF}, // Char
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233 {'u', 2, &V0xFFFF}, // Wchar
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234 {'w', 4, &V0xFFFF}, // Dchar
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235 {'b', 1, &VFALSE}, // Bool
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236 {'g', 1, &VZERO}, // Byte
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237 {'h', 1, &VZERO}, // Ubyte
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238 {'s', 2, &VZERO}, // Short
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239 {'t', 2, &VZERO}, // Ushort
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240 {'i', 4, &VZERO}, // Int
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241 {'k', 4, &VZERO}, // Uint
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242 {'l', 8, &VZERO}, // Long
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243 {'m', 8, &VZERO}, // Ulong
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244 {'?', 16, &VZERO}, // Cent
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245 {'?', 16, &VZERO}, // Ucent
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246 {'f', 4, &VNAN}, // Float
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247 {'d', 8, &VNAN}, // Double
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248 {'e', 12, &VNAN}, // Real
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249 {'o', 4, &VNAN}, // Ifloat
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250 {'p', 8, &VNAN}, // Idouble
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251 {'j', 12, &VNAN}, // Ireal
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252 {'q', 8, &VCNAN}, // Cfloat
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253 {'r', 16, &VCNAN}, // Cdouble
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254 {'c', 24, &VCNAN}, // Creal
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255 {'v', 1}, // void
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256
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257 {'n', SNA}, // None
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258
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259 {'A', PS*2, &VNULL}, // Dynamic array
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260 {'G', PS*2, &VNULL}, // Static array
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261 {'H', PS*2, &VNULL}, // Associative array
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262
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263 {'E', SNA}, // Enum
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264 {'S', SNA}, // Struct
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265 {'C', PS, &VNULL}, // Class
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266 {'T', SNA}, // Typedef
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267 {'F', PS}, // Function
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268 {'D', PS*2, &VNULL}, // Delegate
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269 {'P', PS, &VNULL}, // Pointer
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270 {'R', PS, &VNULL}, // Reference
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271 {'I', SNA}, // Identifier
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272 {'?', SNA}, // Template instance
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273 {'B', SNA}, // Tuple
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274 {'x', SNA}, // Const, D2
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275 {'y', SNA}, // Invariant, D2
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276 ];
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277 static assert(metaInfoTable.length == TYP.max+1);
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278
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279 size_t getSize(Type type)
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280 {
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281 auto size = metaInfoTable[type.tid].size;
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282 if (size == SIZE_NOT_AVAILABLE)
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283 return type.sizeOf_();
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284 return size;
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285 }
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286 }
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287
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288 /// A set of pre-defined types.
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289 struct Types
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290 {
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291 static:
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292 TypeBasic Char, Wchar, Dchar, Bool,
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293 Byte, Ubyte, Short, Ushort,
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294 Int, Uint, Long, Ulong,
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295 Cent, Ucent,
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296 Float, Double, Real,
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297 Ifloat, Idouble, Ireal,
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298 Cfloat, Cdouble, Creal, Void;
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299
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300 TypeBasic Size_t, Ptrdiff_t;
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301 TypePointer Void_ptr;
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302 TypeBasic Error, Undefined;
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303
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304 /// Allocates an instance of TypeBasic and assigns it to typeName.
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305 template newTB(char[] typeName)
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306 {
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307 const newTB = mixin(typeName~" = new TypeBasic(TYP."~typeName~")");
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308 }
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309
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310 static this()
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311 {
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312 newTB!("Char");
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313 newTB!("Wchar");
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314 newTB!("Dchar");
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315 newTB!("Bool");
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316 newTB!("Byte");
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317 newTB!("Ubyte");
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318 newTB!("Short");
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319 newTB!("Ushort");
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320 newTB!("Int");
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321 newTB!("Uint");
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322 newTB!("Long");
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323 newTB!("Ulong");
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324 newTB!("Cent");
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325 newTB!("Ucent");
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326 newTB!("Float");
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327 newTB!("Double");
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328 newTB!("Real");
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329 newTB!("Ifloat");
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330 newTB!("Idouble");
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331 newTB!("Ireal");
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332 newTB!("Cfloat");
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333 newTB!("Cdouble");
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334 newTB!("Creal");
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335 newTB!("Void");
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336 version(X86_64)
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337 {
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338 Size_t = Ulong;
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339 Ptrdiff_t = Long;
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340 }
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341 else
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342 {
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343 Size_t = Uint;
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344 Ptrdiff_t = Int;
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345 }
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346 Void_ptr = Void.ptrTo;
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347 Error = new TypeBasic(TYP.Error);
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348 Undefined = new TypeBasic(TYP.Error);
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349 }
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350 }