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annotate druntime/src/compiler/ldc/typeinfo/ti_Ag.d @ 759:d3eb054172f9

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Added copy of druntime from DMD 2.020 modified for LDC.
author Tomas Lindquist Olsen <tomas.l.olsen@gmail.com>
date Tue, 11 Nov 2008 01:52:37 +0100
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759
d3eb054172f9 Added copy of druntime from DMD 2.020 modified for LDC.
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1
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2 module rt.typeinfo.ti_Ag;
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3
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4 private import util.string;
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5 private import stdc.string;
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6
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7 // byte[]
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8
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9 class TypeInfo_Ag : TypeInfo
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10 {
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11 override string toString() { return "byte[]"; }
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12
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13 override hash_t getHash(in void* p)
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14 { byte[] s = *cast(byte[]*)p;
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15 size_t len = s.length;
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16 byte *str = s.ptr;
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17 hash_t hash = 0;
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18
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19 while (1)
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20 {
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21 switch (len)
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22 {
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23 case 0:
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24 return hash;
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25
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26 case 1:
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27 hash *= 9;
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28 hash += *cast(ubyte *)str;
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29 return hash;
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30
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31 case 2:
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32 hash *= 9;
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33 hash += *cast(ushort *)str;
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34 return hash;
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35
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36 case 3:
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37 hash *= 9;
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38 hash += (*cast(ushort *)str << 8) +
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39 (cast(ubyte *)str)[2];
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40 return hash;
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41
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42 default:
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43 hash *= 9;
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44 hash += *cast(uint *)str;
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45 str += 4;
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46 len -= 4;
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47 break;
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48 }
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49 }
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50
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51 return hash;
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52 }
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53
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54 override equals_t equals(in void* p1, in void* p2)
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55 {
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56 byte[] s1 = *cast(byte[]*)p1;
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57 byte[] s2 = *cast(byte[]*)p2;
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58
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59 return s1.length == s2.length &&
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60 memcmp(cast(byte *)s1, cast(byte *)s2, s1.length) == 0;
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61 }
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62
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63 override int compare(in void* p1, in void* p2)
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64 {
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65 byte[] s1 = *cast(byte[]*)p1;
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66 byte[] s2 = *cast(byte[]*)p2;
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67 size_t len = s1.length;
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68
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69 if (s2.length < len)
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70 len = s2.length;
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71 for (size_t u = 0; u < len; u++)
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72 {
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73 int result = s1[u] - s2[u];
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74 if (result)
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75 return result;
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76 }
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77 if (s1.length < s2.length)
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78 return -1;
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79 else if (s1.length > s2.length)
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80 return 1;
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81 return 0;
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82 }
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83
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84 override size_t tsize()
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85 {
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86 return (byte[]).sizeof;
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87 }
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88
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89 override uint flags()
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90 {
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91 return 1;
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92 }
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93
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94 override TypeInfo next()
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95 {
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96 return typeid(byte);
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97 }
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98 }
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99
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100
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101 // ubyte[]
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102
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103 class TypeInfo_Ah : TypeInfo_Ag
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104 {
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105 override string toString() { return "ubyte[]"; }
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106
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107 override int compare(in void* p1, in void* p2)
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108 {
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109 char[] s1 = *cast(char[]*)p1;
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110 char[] s2 = *cast(char[]*)p2;
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111
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112 return dstrcmp(s1, s2);
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113 }
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114
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115 override TypeInfo next()
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116 {
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117 return typeid(ubyte);
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118 }
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119 }
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120
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121 // void[]
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122
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123 class TypeInfo_Av : TypeInfo_Ah
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124 {
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125 override string toString() { return "void[]"; }
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126
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127 override TypeInfo next()
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128 {
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129 return typeid(void);
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130 }
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131 }
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132
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133 // bool[]
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134
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135 class TypeInfo_Ab : TypeInfo_Ah
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136 {
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137 override string toString() { return "bool[]"; }
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138
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139 override TypeInfo next()
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140 {
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141 return typeid(bool);
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142 }
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143 }
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144
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145 // char[]
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146
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147 class TypeInfo_Aa : TypeInfo_Ag
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148 {
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149 override string toString() { return "char[]"; }
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150
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151 override hash_t getHash(in void* p)
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152 { char[] s = *cast(char[]*)p;
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153 hash_t hash = 0;
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154
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155 version (all)
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156 {
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157 foreach (char c; s)
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158 hash = hash * 11 + c;
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159 }
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160 else
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161 {
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162 size_t len = s.length;
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163 char *str = s;
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164
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165 while (1)
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166 {
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167 switch (len)
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168 {
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169 case 0:
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170 return hash;
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171
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172 case 1:
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173 hash *= 9;
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174 hash += *cast(ubyte *)str;
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175 return hash;
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176
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177 case 2:
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178 hash *= 9;
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179 hash += *cast(ushort *)str;
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180 return hash;
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181
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182 case 3:
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183 hash *= 9;
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184 hash += (*cast(ushort *)str << 8) +
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185 (cast(ubyte *)str)[2];
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186 return hash;
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187
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188 default:
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189 hash *= 9;
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190 hash += *cast(uint *)str;
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191 str += 4;
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192 len -= 4;
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193 break;
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194 }
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195 }
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196 }
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197 return hash;
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198 }
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199
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200 override TypeInfo next()
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201 {
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202 return typeid(char);
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203 }
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204 }