annotate trunk/src/dil/semantic/Types.d @ 796:f7688996bf08

Added member symbol to class Type. Fixed html_map.d to IE6.
author Aziz K?ksal <aziz.koeksal@gmail.com>
date Fri, 29 Feb 2008 19:25:21 +0100
parents 8e252b7c1459
children c24be8d4f6ab
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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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0749f30ef2d0 Added member 'EnumType type' to class Enum.
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5 module dil.semantic.Types;
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6
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7 import dil.semantic.Symbol;
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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; /// The next type in the type structure.
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15 TYP tid; /// The ID of the type.
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16 Symbol symbol; /// Not null if this type has a symbol.
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17
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18 this(){}
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19
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20 this(Type next, TYP tid)
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21 {
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22 // this.sid = SYM.Type;
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23
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24 this.next = next;
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25 this.tid = tid;
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26 }
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28 TypePointer ptrTo()
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29 {
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30 return new TypePointer(this);
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31 }
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32
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33 /// Get byte size of this type.
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34 final size_t sizeOf()
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35 {
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36 return MITable.getSize(this);
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37 }
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38
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39 /// Size is not in MITable. Find out via virtual method.
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40 size_t sizeOf_()
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41 {
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42 return sizeOf();
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43 }
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44
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45 bool hasSymbol()
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46 {
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47 return symbol !is null;
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48 }
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49 }
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50
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51 class TypeBasic : Type
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52 {
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53 this(TYP typ)
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54 {
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55 super(null, typ);
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56 }
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57 }
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58
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59 /// Dynamic array.
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60 class TypeDArray : Type
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61 {
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62 this(Type next)
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63 {
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64 super(next, TYP.DArray);
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65 }
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66 }
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67
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68 /// Associative array.
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69 class TypeAArray : Type
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70 {
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71 Type keyType;
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72 this(Type next, Type keyType)
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73 {
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74 super(next, TYP.AArray);
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75 this.keyType = keyType;
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76 }
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77 }
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78
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79 /// Static array.
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80 class TypeSArray : Type
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81 {
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82 size_t dimension;
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83 this(Type next, size_t dimension)
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84 {
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85 super(next, TYP.SArray);
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86 this.dimension = dimension;
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87 }
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88 }
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89
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90 class TypePointer : Type
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91 {
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92 this(Type next)
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93 {
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94 super(next, TYP.Pointer);
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95 }
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96 }
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97
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98 class TypeReference : Type
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99 {
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100 this(Type next)
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101 {
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102 super(next, TYP.Reference);
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103 }
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104 }
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105
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106 class TypeEnum : Type
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107 {
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108 this(Symbol symbol, Type baseType)
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109 {
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110 super(baseType, TYP.Enum);
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111 this.symbol = symbol;
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112 }
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113
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114 Type baseType()
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115 {
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116 return next;
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117 }
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118 }
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119
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120 class TypeStruct : Type
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121 {
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122 this(Symbol symbol)
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123 {
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124 super(null, TYP.Struct);
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125 this.symbol = symbol;
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126 }
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127 }
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128
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129 class TypeClass : Type
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130 {
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131 this(Symbol symbol)
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132 {
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133 super(null, TYP.Class);
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134 this.symbol = symbol;
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135 }
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136 }
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137
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138 class TypeTypedef : Type
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139 {
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140 this(Type next)
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141 {
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142 super(next, TYP.Typedef);
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143 }
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144 }
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145
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146 class TypeFunction : Type
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147 {
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148 this(Type next)
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149 {
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150 super(next, TYP.Function);
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151 }
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152 }
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153
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154 class TypeDelegate : Type
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155 {
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156 this(Type next)
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157 {
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158 super(next, TYP.Delegate);
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159 }
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160 }
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161
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162 class TypeIdentifier : Type
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163 {
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164 Identifier* ident;
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165 this(Identifier* ident)
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166 {
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167 super(null, TYP.Identifier);
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168 }
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169 }
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170
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171 class TypeTemplInstance : Type
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172 {
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173 this()
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174 {
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175 super(null, TYP.TInstance);
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176 }
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177 }
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178
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179 class TypeTuple : Type
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180 {
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181 this(Type next)
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182 {
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183 super(next, TYP.Tuple);
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184 }
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185 }
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186
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187 class TypeConst : Type
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188 {
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189 this(Type next)
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190 {
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191 super(next, TYP.Const);
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192 }
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193 }
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194
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195 class TypeInvariant : Type
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196 {
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197 this(Type next)
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198 {
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199 super(next, TYP.Const);
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200 }
512
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201 }
522
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202
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203 /// Represents a value related to a type.
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204 union Value
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205 {
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206 void* pvoid;
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207 bool bool_;
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208 dchar dchar_;
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209 long long_;
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210 ulong ulong_;
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211 int int_;
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212 uint uint_;
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213 float float_;
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214 double double_;
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215 real real_;
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216 creal creal_;
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217 }
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218
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219 struct TypeMetaInfo
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220 {
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221 char mangle; /// Mangle character of the type.
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222 ushort size; /// Byte size of the type.
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223 Value* defaultInit; /// Default initialization value.
522
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224 }
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225
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226 struct MITable
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227 {
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228 static:
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229 const ushort SIZE_NOT_AVAILABLE = 0; /// Size not available.
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230 const Value VZERO = {int_:0}; /// Value 0.
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231 const Value VNULL = {pvoid:null}; /// Value null.
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232 const Value V0xFF = {dchar_:0xFF}; /// Value 0xFF.
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233 const Value V0xFFFF = {dchar_:0xFFFF}; /// Value 0xFFFF.
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234 const Value VFALSE = {bool_:false}; /// Value false.
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235 const Value VNAN = {float_:float.nan}; /// Value NAN.
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236 const Value VCNAN = {creal_:creal.nan}; /// Value complex NAN.
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237 private alias SIZE_NOT_AVAILABLE SNA;
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238 private alias PTR_SIZE PS;
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239 private const TypeMetaInfo metaInfoTable[] = [
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240 {'?', SNA}, // Error
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241
548
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242 {'a', 1, &V0xFF}, // Char
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243 {'u', 2, &V0xFFFF}, // Wchar
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244 {'w', 4, &V0xFFFF}, // Dchar
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245 {'b', 1, &VFALSE}, // Bool
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246 {'g', 1, &VZERO}, // Byte
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247 {'h', 1, &VZERO}, // Ubyte
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248 {'s', 2, &VZERO}, // Short
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249 {'t', 2, &VZERO}, // Ushort
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250 {'i', 4, &VZERO}, // Int
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251 {'k', 4, &VZERO}, // Uint
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252 {'l', 8, &VZERO}, // Long
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253 {'m', 8, &VZERO}, // Ulong
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254 {'?', 16, &VZERO}, // Cent
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255 {'?', 16, &VZERO}, // Ucent
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256 {'f', 4, &VNAN}, // Float
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257 {'d', 8, &VNAN}, // Double
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258 {'e', 12, &VNAN}, // Real
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259 {'o', 4, &VNAN}, // Ifloat
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260 {'p', 8, &VNAN}, // Idouble
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261 {'j', 12, &VNAN}, // Ireal
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262 {'q', 8, &VCNAN}, // Cfloat
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263 {'r', 16, &VCNAN}, // Cdouble
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264 {'c', 24, &VCNAN}, // Creal
527
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265 {'v', 1}, // void
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266
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267 {'n', SNA}, // None
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268
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269 {'A', PS*2, &VNULL}, // Dynamic array
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270 {'G', PS*2, &VNULL}, // Static array
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271 {'H', PS*2, &VNULL}, // Associative array
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272
527
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273 {'E', SNA}, // Enum
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274 {'S', SNA}, // Struct
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275 {'C', PS, &VNULL}, // Class
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276 {'T', SNA}, // Typedef
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277 {'F', PS}, // Function
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278 {'D', PS*2, &VNULL}, // Delegate
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279 {'P', PS, &VNULL}, // Pointer
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280 {'R', PS, &VNULL}, // Reference
527
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281 {'I', SNA}, // Identifier
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282 {'?', SNA}, // Template instance
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283 {'B', SNA}, // Tuple
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284 {'x', SNA}, // Const, D2
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285 {'y', SNA}, // Invariant, D2
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286 ];
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287 static assert(metaInfoTable.length == TYP.max+1);
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288
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289 size_t getSize(Type type)
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290 {
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291 auto size = metaInfoTable[type.tid].size;
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292 if (size == SIZE_NOT_AVAILABLE)
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293 return type.sizeOf_();
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294 return size;
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295 }
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296 }
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297
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298 /// A set of pre-defined types.
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299 struct Types
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300 {
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301 static:
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302 TypeBasic Char, Wchar, Dchar, Bool,
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303 Byte, Ubyte, Short, Ushort,
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304 Int, Uint, Long, Ulong,
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305 Cent, Ucent,
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306 Float, Double, Real,
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307 Ifloat, Idouble, Ireal,
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308 Cfloat, Cdouble, Creal, Void;
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309
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310 TypeBasic Size_t, Ptrdiff_t;
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311 TypePointer Void_ptr;
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312 TypeBasic Error, Undefined;
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313
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314 /// Allocates an instance of TypeBasic and assigns it to typeName.
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315 template newTB(char[] typeName)
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316 {
617
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317 const newTB = mixin(typeName~" = new TypeBasic(TYP."~typeName~")");
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318 }
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319
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320 static this()
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321 {
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322 newTB!("Char");
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323 newTB!("Wchar");
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324 newTB!("Dchar");
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325 newTB!("Bool");
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326 newTB!("Byte");
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327 newTB!("Ubyte");
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328 newTB!("Short");
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329 newTB!("Ushort");
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330 newTB!("Int");
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331 newTB!("Uint");
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332 newTB!("Long");
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333 newTB!("Ulong");
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334 newTB!("Cent");
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335 newTB!("Ucent");
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336 newTB!("Float");
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337 newTB!("Double");
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338 newTB!("Real");
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339 newTB!("Ifloat");
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340 newTB!("Idouble");
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341 newTB!("Ireal");
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342 newTB!("Cfloat");
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343 newTB!("Cdouble");
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344 newTB!("Creal");
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345 newTB!("Void");
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346 version(X86_64)
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347 {
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348 Size_t = Ulong;
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349 Ptrdiff_t = Long;
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350 }
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351 else
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352 {
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353 Size_t = Uint;
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354 Ptrdiff_t = Int;
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355 }
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356 Void_ptr = Void.ptrTo;
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357 Error = new TypeBasic(TYP.Error);
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358 Undefined = new TypeBasic(TYP.Error);
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359 }
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360 }