Mercurial > projects > dil
annotate trunk/src/dil/TypeSystem.d @ 527:c8c3aec130f7
Added struct MITable.
Added methods sizeOf() and sizeOf_() to class Type.
Moved metaInfoTable into MITable.
author | Aziz K?ksal <aziz.koeksal@gmail.com> |
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date | Sun, 16 Dec 2007 22:45:23 +0100 |
parents | ee22dc0ba82c |
children | 0781ac288537 |
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512
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Added module dil.TypeSystem.
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1 /++ |
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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.TypeSystem; |
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6 |
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7 import dil.Symbol; |
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8 import dil.TypesEnum; |
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9 import dil.CompilerInfo; |
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10 import dil.Identifier; |
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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 typ; |
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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 typ) |
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20 { |
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21 this.next = next; |
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22 this.typ = typ; |
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23 } |
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24 |
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25 TypePointer ptrTo() |
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26 { |
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27 return new TypePointer(this); |
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28 } |
527 | 29 |
30 /// Get byte size of this type. | |
31 final size_t sizeOf() | |
32 { | |
33 return MITable.getSize(this); | |
34 } | |
35 | |
36 /// Size is not in MITable. Find out via virtual method. | |
37 size_t sizeOf_() | |
38 { | |
39 return sizeOf(); | |
40 } | |
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41 } |
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42 |
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43 class TypeBasic : Type |
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44 { |
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45 this(TYP typ) |
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46 { |
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47 super(null, typ); |
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48 } |
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49 } |
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50 |
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51 class TypeDArray : Type |
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52 { |
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53 this(Type next) |
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54 { |
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55 super(next, TYP.DArray); |
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56 } |
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57 } |
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58 |
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59 class TypeAArray : Type |
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60 { |
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61 Type keyType; |
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62 this(Type next, Type keyType) |
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63 { |
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64 super(next, TYP.AArray); |
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65 this.keyType = keyType; |
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66 } |
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67 } |
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68 |
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69 class TypeSArray : Type |
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70 { |
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71 size_t dimension; |
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72 this(Type next, size_t dimension) |
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73 { |
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74 super(next, TYP.SArray); |
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75 this.dimension = dimension; |
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76 } |
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77 } |
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78 |
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79 class TypePointer : Type |
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80 { |
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81 this(Type next) |
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82 { |
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83 super(next, TYP.Pointer); |
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84 } |
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85 } |
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86 |
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87 class TypeReference : Type |
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88 { |
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89 this(Type next) |
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90 { |
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91 super(next, TYP.Reference); |
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92 } |
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93 } |
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94 |
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95 class EnumType : Type |
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96 { |
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97 this(Type baseType) |
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98 { |
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99 super(baseType, TYP.Enum); |
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100 } |
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101 |
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102 Type baseType() |
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103 { |
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104 return next; |
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105 } |
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106 } |
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107 |
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108 class StructType : Type |
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109 { |
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110 this() |
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111 { |
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112 super(null, TYP.Struct); |
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113 } |
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114 } |
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115 |
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116 class ClassType : Type |
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117 { |
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118 this() |
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119 { |
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120 super(null, TYP.Class); |
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121 } |
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122 } |
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123 |
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124 class TypedefType : Type |
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125 { |
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126 this(Type next) |
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127 { |
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128 super(next, TYP.Typedef); |
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129 } |
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130 } |
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131 |
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132 class FunctionType : Type |
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133 { |
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134 this(Type next) |
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135 { |
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136 super(next, TYP.Function); |
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137 } |
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138 } |
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139 |
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140 class DelegateType : Type |
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141 { |
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142 this(Type next) |
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143 { |
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144 super(next, TYP.Delegate); |
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145 } |
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146 } |
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147 |
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148 class IdentifierType : Type |
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149 { |
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150 Identifier* ident; |
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151 this(Identifier* ident) |
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152 { |
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153 super(null, TYP.Identifier); |
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154 } |
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155 } |
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156 |
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157 class TInstanceType : Type |
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158 { |
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159 this() |
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160 { |
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161 super(null, TYP.TInstance); |
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162 } |
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163 } |
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164 |
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165 class TupleType : Type |
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166 { |
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167 this(Type next) |
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168 { |
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169 super(next, TYP.Tuple); |
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170 } |
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171 } |
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172 |
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173 class ConstType : Type |
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174 { |
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175 this(Type next) |
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176 { |
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177 super(next, TYP.Const); |
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178 } |
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179 } |
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180 |
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181 class InvariantType : Type |
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182 { |
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183 this(Type next) |
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184 { |
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185 super(next, TYP.Const); |
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186 } |
512
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187 } |
522
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188 |
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189 struct TypeMetaInfo |
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190 { |
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191 char mangle; /// Mangle character of the type. |
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192 size_t size; /// Byte size of the type. |
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193 } |
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194 |
527 | 195 struct MITable |
196 { | |
197 static: | |
198 const size_t SIZE_NOT_AVAILABLE = -1; /// Size not available. | |
199 private alias SIZE_NOT_AVAILABLE SNA; | |
200 private alias PTR_SIZE PS; | |
201 private const TypeMetaInfo metaInfoTable[] = [ | |
202 {'?', SNA}, // Error | |
522
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203 |
527 | 204 {'a', 1}, // Char |
205 {'u', 2}, // Wchar | |
206 {'w', 4}, // Dchar | |
207 {'b', 1}, // Bool | |
208 {'g', 1}, // Byte | |
209 {'h', 1}, // Ubyte | |
210 {'s', 2}, // Short | |
211 {'t', 2}, // Ushort | |
212 {'i', 4}, // Int | |
213 {'k', 4}, // Uint | |
214 {'l', 8}, // Long | |
215 {'m', 8}, // Ulong | |
216 {'?', 16}, // Cent | |
217 {'?', 16}, // Ucent | |
218 {'f', 4}, // Float | |
219 {'d', 8}, // Double | |
220 {'e', 12}, // Real | |
221 {'o', 4}, // Ifloat | |
222 {'p', 8}, // Idouble | |
223 {'j', 12}, // Ireal | |
224 {'q', 8}, // Cfloat | |
225 {'r', 16}, // Cdouble | |
226 {'c', 24}, // Creal | |
227 {'v', 1}, // void | |
228 | |
229 {'n', SNA}, // None | |
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230 |
527 | 231 {'A', PS*2}, // Dynamic array |
232 {'G', PS*2}, // Static array | |
233 {'H', PS*2}, // Associative array | |
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234 |
527 | 235 {'E', SNA}, // Enum |
236 {'S', SNA}, // Struct | |
237 {'C', PS}, // Class | |
238 {'T', SNA}, // Typedef | |
239 {'F', PS}, // Function | |
240 {'D', PS*2}, // Delegate | |
241 {'P', PS}, // Pointer | |
242 {'R', PS}, // Reference | |
243 {'I', SNA}, // Identifier | |
244 {'?', SNA}, // Template instance | |
245 {'B', SNA}, // Tuple | |
246 {'x', SNA}, // Const, D2 | |
247 {'y', SNA}, // Invariant, D2 | |
248 ]; | |
249 | |
250 size_t getSize(Type type) | |
251 { | |
252 auto size = metaInfoTable[type.typ].size; | |
253 if (size == SIZE_NOT_AVAILABLE) | |
254 return type.sizeOf_(); | |
255 return size; | |
256 } | |
257 } | |
525
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258 |
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259 /// A set of pre-defined types. |
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260 struct Types |
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261 { |
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262 static: |
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263 TypeBasic Char, Wchar, Dchar, Bool, |
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264 Byte, Ubyte, Short, Ushort, |
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265 Int, Uint, Long, Ulong, |
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266 Cent, Ucent, |
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267 Float, Double, Real, |
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268 Ifloat, Idouble, Ireal, |
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269 Cfloat, Cdouble, Creal, Void; |
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270 |
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271 TypeBasic Size_t, Ptrdiff_t; |
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272 TypePointer Void_ptr; |
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273 |
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274 /// Allocates an instance of TypeBasic and assigns it to typeName. |
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275 template newTB(char[] typeName) |
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276 { |
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277 const TypeBasic newTB = mixin(typeName~" = new TypeBasic(TYP."~typeName~")"); |
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278 } |
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279 |
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280 static this() |
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281 { |
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282 newTB!("Char"); |
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283 newTB!("Wchar"); |
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284 newTB!("Dchar"); |
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285 newTB!("Bool"); |
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286 newTB!("Byte"); |
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287 newTB!("Ubyte"); |
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288 newTB!("Short"); |
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289 newTB!("Ushort"); |
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290 newTB!("Int"); |
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291 newTB!("Uint"); |
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292 newTB!("Long"); |
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293 newTB!("Ulong"); |
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294 newTB!("Cent"); |
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295 newTB!("Ucent"); |
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296 newTB!("Float"); |
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297 newTB!("Double"); |
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298 newTB!("Real"); |
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299 newTB!("Ifloat"); |
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300 newTB!("Idouble"); |
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301 newTB!("Ireal"); |
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302 newTB!("Cfloat"); |
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303 newTB!("Cdouble"); |
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304 newTB!("Creal"); |
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305 newTB!("Void"); |
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306 version(X86_64) |
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307 { |
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308 Size_t = Ulong; |
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309 Ptrdiff_t = Long; |
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310 } |
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311 else |
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312 { |
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313 Size_t = Uint; |
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314 Ptrdiff_t = Int; |
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315 } |
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316 Void_ptr = Void.ptrTo; |
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317 } |
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318 } |