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annotate druntime/src/compiler/dmd/typeinfo/ti_Ag.d @ 1458:e0b2d67cfe7c

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Added druntime (this should be removed once it works).
author Robert Clipsham <robert@octarineparrot.com>
date Tue, 02 Jun 2009 17:43:06 +0100
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1458
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1 /**
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2 * TypeInfo support code.
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3 *
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4 * Copyright: Copyright Digital Mars 2004 - 2009.
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5 * License: <a href="http://www.boost.org/LICENSE_1_0.txt>Boost License 1.0</a>.
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6 * Authors: Walter Bright
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7 *
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8 * Copyright Digital Mars 2004 - 2009.
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9 * Distributed under the Boost Software License, Version 1.0.
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10 * (See accompanying file LICENSE_1_0.txt or copy at
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11 * http://www.boost.org/LICENSE_1_0.txt)
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12 */
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13 module rt.typeinfo.ti_Ag;
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14
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15 private import rt.util.string;
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16 private import core.stdc.string;
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17
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18 // byte[]
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19
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20 class TypeInfo_Ag : TypeInfo
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21 {
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22 override string toString() { return "byte[]"; }
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23
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24 override hash_t getHash(in void* p)
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25 { byte[] s = *cast(byte[]*)p;
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26 size_t len = s.length;
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27 byte *str = s.ptr;
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28 hash_t hash = 0;
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29
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30 while (1)
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31 {
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32 switch (len)
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33 {
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34 case 0:
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35 return hash;
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36
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37 case 1:
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38 hash *= 9;
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39 hash += *cast(ubyte *)str;
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40 return hash;
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41
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42 case 2:
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43 hash *= 9;
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44 hash += *cast(ushort *)str;
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45 return hash;
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46
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47 case 3:
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48 hash *= 9;
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49 hash += (*cast(ushort *)str << 8) +
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50 (cast(ubyte *)str)[2];
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51 return hash;
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52
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53 default:
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54 hash *= 9;
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55 hash += *cast(uint *)str;
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56 str += 4;
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57 len -= 4;
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58 break;
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59 }
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60 }
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61
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62 return hash;
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63 }
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64
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65 override equals_t equals(in void* p1, in void* p2)
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66 {
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67 byte[] s1 = *cast(byte[]*)p1;
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68 byte[] s2 = *cast(byte[]*)p2;
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69
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70 return s1.length == s2.length &&
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71 memcmp(cast(byte *)s1, cast(byte *)s2, s1.length) == 0;
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72 }
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73
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74 override int compare(in void* p1, in void* p2)
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75 {
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76 byte[] s1 = *cast(byte[]*)p1;
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77 byte[] s2 = *cast(byte[]*)p2;
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78 size_t len = s1.length;
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79
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80 if (s2.length < len)
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81 len = s2.length;
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82 for (size_t u = 0; u < len; u++)
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83 {
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84 int result = s1[u] - s2[u];
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85 if (result)
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86 return result;
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87 }
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88 if (s1.length < s2.length)
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89 return -1;
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90 else if (s1.length > s2.length)
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91 return 1;
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92 return 0;
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93 }
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94
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95 override size_t tsize()
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96 {
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97 return (byte[]).sizeof;
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98 }
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99
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100 override uint flags()
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101 {
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102 return 1;
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103 }
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104
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105 override TypeInfo next()
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106 {
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107 return typeid(byte);
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108 }
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109 }
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110
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111
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112 // ubyte[]
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113
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114 class TypeInfo_Ah : TypeInfo_Ag
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115 {
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116 override string toString() { return "ubyte[]"; }
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117
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118 override int compare(in void* p1, in void* p2)
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119 {
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120 char[] s1 = *cast(char[]*)p1;
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121 char[] s2 = *cast(char[]*)p2;
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122
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123 return dstrcmp(s1, s2);
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124 }
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125
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126 override TypeInfo next()
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127 {
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128 return typeid(ubyte);
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129 }
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130 }
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131
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132 // void[]
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133
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134 class TypeInfo_Av : TypeInfo_Ah
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135 {
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136 override string toString() { return "void[]"; }
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137
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138 override TypeInfo next()
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139 {
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140 return typeid(void);
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141 }
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142 }
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143
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144 // bool[]
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145
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146 class TypeInfo_Ab : TypeInfo_Ah
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147 {
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148 override string toString() { return "bool[]"; }
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149
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150 override TypeInfo next()
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151 {
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152 return typeid(bool);
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153 }
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154 }
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155
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156 // char[]
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157
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158 class TypeInfo_Aa : TypeInfo_Ag
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159 {
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160 override string toString() { return "char[]"; }
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161
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162 override hash_t getHash(in void* p)
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163 { char[] s = *cast(char[]*)p;
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164 hash_t hash = 0;
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165
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166 version (all)
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167 {
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168 foreach (char c; s)
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169 hash = hash * 11 + c;
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170 }
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171 else
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172 {
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173 size_t len = s.length;
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174 char *str = s;
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175
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176 while (1)
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177 {
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178 switch (len)
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179 {
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180 case 0:
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181 return hash;
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182
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183 case 1:
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184 hash *= 9;
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185 hash += *cast(ubyte *)str;
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186 return hash;
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187
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188 case 2:
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189 hash *= 9;
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190 hash += *cast(ushort *)str;
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191 return hash;
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192
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193 case 3:
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194 hash *= 9;
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195 hash += (*cast(ushort *)str << 8) +
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196 (cast(ubyte *)str)[2];
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197 return hash;
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198
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199 default:
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200 hash *= 9;
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201 hash += *cast(uint *)str;
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202 str += 4;
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203 len -= 4;
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204 break;
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205 }
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206 }
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207 }
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208 return hash;
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209 }
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210
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211 override TypeInfo next()
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212 {
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213 return typeid(char);
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214 }
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215 }
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216
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217 // string
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218
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219 class TypeInfo_Aya : TypeInfo_Aa
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220 {
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221 override string toString() { return "immutable(char)[]"; }
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222
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223 override TypeInfo next()
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224 {
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225 return typeid(immutable(char));
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226 }
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227 }
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228