Mercurial > projects > ldc
annotate dmd2/dchar.c @ 1091:20d96c148b39
Fix for fmul/div/add/sub with no operands. Revert explicit ST0 definition since a typo
had caused the need for that.
author | Kelly Wilson <wilsonk cpsc.ucalgary.ca> |
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date | Tue, 10 Mar 2009 18:34:19 -0600 |
parents | f04dde6e882c |
children |
rev | line source |
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758
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1 |
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2 // Copyright (c) 1999-2006 by Digital Mars |
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3 // All Rights Reserved |
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4 // written by Walter Bright |
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5 // www.digitalmars.com |
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6 // License for redistribution is by either the Artistic License |
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7 // in artistic.txt, or the GNU General Public License in gnu.txt. |
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8 // See the included readme.txt for details. |
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9 |
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10 |
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11 #include <stdio.h> |
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12 #include <stdlib.h> |
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13 #include <stdint.h> |
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14 #include <assert.h> |
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15 |
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16 #include "dchar.h" |
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17 #include "mem.h" |
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18 |
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19 #if M_UNICODE |
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20 |
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21 // Converts a char string to Unicode |
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22 |
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23 dchar *Dchar::dup(char *p) |
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24 { |
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25 dchar *s; |
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26 size_t len; |
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27 |
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28 if (!p) |
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29 return NULL; |
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30 len = strlen(p); |
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31 s = (dchar *)mem.malloc((len + 1) * sizeof(dchar)); |
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32 for (unsigned i = 0; i < len; i++) |
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33 { |
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34 s[i] = (dchar)(p[i] & 0xFF); |
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35 } |
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36 s[len] = 0; |
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37 return s; |
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38 } |
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39 |
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40 dchar *Dchar::memchr(dchar *p, int c, int count) |
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41 { |
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42 int u; |
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43 |
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44 for (u = 0; u < count; u++) |
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45 { |
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46 if (p[u] == c) |
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47 return p + u; |
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48 } |
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49 return NULL; |
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50 } |
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51 |
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52 #if _WIN32 && __DMC__ |
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53 __declspec(naked) |
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54 unsigned Dchar::calcHash(const dchar *str, unsigned len) |
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55 { |
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56 __asm |
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57 { |
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58 mov ECX,4[ESP] |
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59 mov EDX,8[ESP] |
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60 xor EAX,EAX |
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61 test EDX,EDX |
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62 je L92 |
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63 |
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64 LC8: cmp EDX,1 |
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65 je L98 |
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66 cmp EDX,2 |
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67 je LAE |
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68 |
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69 add EAX,[ECX] |
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70 // imul EAX,EAX,025h |
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71 lea EAX,[EAX][EAX*8] |
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72 add ECX,4 |
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73 sub EDX,2 |
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74 jmp LC8 |
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75 |
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76 L98: mov DX,[ECX] |
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77 and EDX,0FFFFh |
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78 add EAX,EDX |
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79 ret |
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80 |
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81 LAE: add EAX,[ECX] |
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82 L92: ret |
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83 } |
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84 } |
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85 #else |
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86 hash_t Dchar::calcHash(const dchar *str, size_t len) |
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87 { |
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88 unsigned hash = 0; |
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89 |
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90 for (;;) |
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91 { |
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92 switch (len) |
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93 { |
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94 case 0: |
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95 return hash; |
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96 |
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97 case 1: |
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98 hash += *(const uint16_t *)str; |
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99 return hash; |
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100 |
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101 case 2: |
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102 hash += *(const uint32_t *)str; |
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103 return hash; |
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104 |
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105 default: |
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106 hash += *(const uint32_t *)str; |
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107 hash *= 37; |
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108 str += 2; |
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109 len -= 2; |
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110 break; |
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111 } |
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112 } |
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113 } |
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114 #endif |
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115 |
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116 hash_t Dchar::icalcHash(const dchar *str, size_t len) |
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117 { |
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118 hash_t hash = 0; |
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119 |
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120 for (;;) |
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121 { |
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122 switch (len) |
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123 { |
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124 case 0: |
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125 return hash; |
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126 |
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127 case 1: |
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128 hash += *(const uint16_t *)str | 0x20; |
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129 return hash; |
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130 |
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131 case 2: |
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132 hash += *(const uint32_t *)str | 0x200020; |
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133 return hash; |
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134 |
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135 default: |
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136 hash += *(const uint32_t *)str | 0x200020; |
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137 hash *= 37; |
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138 str += 2; |
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139 len -= 2; |
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140 break; |
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141 } |
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142 } |
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143 } |
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144 |
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145 #elif MCBS |
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146 |
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147 hash_t Dchar::calcHash(const dchar *str, size_t len) |
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148 { |
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149 hash_t hash = 0; |
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150 |
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151 while (1) |
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152 { |
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153 switch (len) |
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154 { |
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155 case 0: |
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156 return hash; |
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157 |
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158 case 1: |
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159 hash *= 37; |
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160 hash += *(const uint8_t *)str; |
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161 return hash; |
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162 |
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163 case 2: |
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164 hash *= 37; |
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165 hash += *(const uint16_t *)str; |
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166 return hash; |
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167 |
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168 case 3: |
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169 hash *= 37; |
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170 hash += (*(const uint16_t *)str << 8) + |
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171 ((const uint8_t *)str)[2]; |
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172 return hash; |
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173 |
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174 default: |
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175 hash *= 37; |
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176 hash += *(const uint32_t *)str; |
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177 str += 4; |
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178 len -= 4; |
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179 break; |
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180 } |
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181 } |
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182 } |
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183 |
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184 #elif UTF8 |
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185 |
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186 // Specification is: http://anubis.dkuug.dk/JTC1/SC2/WG2/docs/n1335 |
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187 |
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188 char Dchar::mblen[256] = |
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189 { |
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190 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, |
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191 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, |
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192 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, |
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193 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, |
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194 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, |
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195 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, |
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196 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, |
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197 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, |
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198 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, |
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199 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, |
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200 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, |
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201 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, |
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202 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, |
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203 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, |
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204 3,3,3,3,3,3,3,3,3,3,3,3,3,3,3,3, |
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205 4,4,4,4,4,4,4,4,5,5,5,5,6,6,1,1, |
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206 }; |
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207 |
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208 dchar *Dchar::dec(dchar *pstart, dchar *p) |
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209 { |
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210 while ((p[-1] & 0xC0) == 0x80) |
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211 p--; |
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212 return p; |
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213 } |
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214 |
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215 int Dchar::get(dchar *p) |
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216 { |
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217 unsigned c; |
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218 unsigned char *q = (unsigned char *)p; |
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219 |
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220 c = q[0]; |
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221 switch (mblen[c]) |
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222 { |
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223 case 2: |
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224 c = ((c - 0xC0) << 6) | |
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225 (q[1] - 0x80); |
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226 break; |
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227 |
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228 case 3: |
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229 c = ((c - 0xE0) << 12) | |
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230 ((q[1] - 0x80) << 6) | |
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231 (q[2] - 0x80); |
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232 break; |
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233 |
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234 case 4: |
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235 c = ((c - 0xF0) << 18) | |
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236 ((q[1] - 0x80) << 12) | |
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237 ((q[2] - 0x80) << 6) | |
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238 (q[3] - 0x80); |
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239 break; |
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240 |
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241 case 5: |
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242 c = ((c - 0xF8) << 24) | |
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243 ((q[1] - 0x80) << 18) | |
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244 ((q[2] - 0x80) << 12) | |
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245 ((q[3] - 0x80) << 6) | |
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246 (q[4] - 0x80); |
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247 break; |
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248 |
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249 case 6: |
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250 c = ((c - 0xFC) << 30) | |
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251 ((q[1] - 0x80) << 24) | |
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252 ((q[2] - 0x80) << 18) | |
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253 ((q[3] - 0x80) << 12) | |
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254 ((q[4] - 0x80) << 6) | |
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255 (q[5] - 0x80); |
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256 break; |
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257 } |
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258 return c; |
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259 } |
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260 |
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261 dchar *Dchar::put(dchar *p, unsigned c) |
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262 { |
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263 if (c <= 0x7F) |
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264 { |
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265 *p++ = c; |
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266 } |
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267 else if (c <= 0x7FF) |
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268 { |
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269 p[0] = 0xC0 + (c >> 6); |
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270 p[1] = 0x80 + (c & 0x3F); |
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271 p += 2; |
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272 } |
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273 else if (c <= 0xFFFF) |
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274 { |
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275 p[0] = 0xE0 + (c >> 12); |
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276 p[1] = 0x80 + ((c >> 6) & 0x3F); |
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277 p[2] = 0x80 + (c & 0x3F); |
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278 p += 3; |
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279 } |
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280 else if (c <= 0x1FFFFF) |
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281 { |
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282 p[0] = 0xF0 + (c >> 18); |
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283 p[1] = 0x80 + ((c >> 12) & 0x3F); |
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284 p[2] = 0x80 + ((c >> 6) & 0x3F); |
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285 p[3] = 0x80 + (c & 0x3F); |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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286 p += 4; |
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287 } |
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288 else if (c <= 0x3FFFFFF) |
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289 { |
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290 p[0] = 0xF8 + (c >> 24); |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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291 p[1] = 0x80 + ((c >> 18) & 0x3F); |
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292 p[2] = 0x80 + ((c >> 12) & 0x3F); |
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293 p[3] = 0x80 + ((c >> 6) & 0x3F); |
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294 p[4] = 0x80 + (c & 0x3F); |
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295 p += 5; |
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296 } |
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297 else if (c <= 0x7FFFFFFF) |
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298 { |
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299 p[0] = 0xFC + (c >> 30); |
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300 p[1] = 0x80 + ((c >> 24) & 0x3F); |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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301 p[2] = 0x80 + ((c >> 18) & 0x3F); |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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302 p[3] = 0x80 + ((c >> 12) & 0x3F); |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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303 p[4] = 0x80 + ((c >> 6) & 0x3F); |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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304 p[5] = 0x80 + (c & 0x3F); |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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305 p += 6; |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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306 } |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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307 else |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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308 assert(0); // not a UCS-4 character |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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309 return p; |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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310 } |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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311 |
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312 hash_t Dchar::calcHash(const dchar *str, size_t len) |
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313 { |
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314 hash_t hash = 0; |
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315 |
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316 while (1) |
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317 { |
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318 switch (len) |
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319 { |
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320 case 0: |
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321 return hash; |
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322 |
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323 case 1: |
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324 hash *= 37; |
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325 hash += *(const uint8_t *)str; |
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326 return hash; |
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327 |
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328 case 2: |
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329 hash *= 37; |
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330 #if __I86__ |
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331 hash += *(const uint16_t *)str; |
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332 #else |
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333 hash += str[0] * 256 + str[1]; |
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334 #endif |
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335 return hash; |
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336 |
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337 case 3: |
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338 hash *= 37; |
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339 #if __I86__ |
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340 hash += (*(const uint16_t *)str << 8) + |
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341 ((const uint8_t *)str)[2]; |
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342 #else |
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343 hash += (str[0] * 256 + str[1]) * 256 + str[2]; |
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344 #endif |
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345 return hash; |
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346 |
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347 default: |
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348 hash *= 37; |
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349 #if __I86__ |
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350 hash += *(const uint32_t *)str; |
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351 #else |
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352 hash += ((str[0] * 256 + str[1]) * 256 + str[2]) * 256 + str[3]; |
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353 #endif |
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354 |
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355 str += 4; |
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356 len -= 4; |
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357 break; |
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358 } |
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359 } |
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360 } |
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361 |
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362 #else // ascii |
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363 |
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364 hash_t Dchar::calcHash(const dchar *str, size_t len) |
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365 { |
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366 hash_t hash = 0; |
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367 |
f04dde6e882c
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368 while (1) |
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369 { |
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370 switch (len) |
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371 { |
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372 case 0: |
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373 return hash; |
f04dde6e882c
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374 |
f04dde6e882c
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375 case 1: |
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376 hash *= 37; |
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377 hash += *(const uint8_t *)str; |
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378 return hash; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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379 |
f04dde6e882c
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380 case 2: |
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381 hash *= 37; |
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382 #if __I86__ |
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383 hash += *(const uint16_t *)str; |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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384 #else |
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385 hash += str[0] * 256 + str[1]; |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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386 #endif |
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387 return hash; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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388 |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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389 case 3: |
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390 hash *= 37; |
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391 #if __I86__ |
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392 hash += (*(const uint16_t *)str << 8) + |
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393 ((const uint8_t *)str)[2]; |
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394 #else |
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395 hash += (str[0] * 256 + str[1]) * 256 + str[2]; |
f04dde6e882c
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396 #endif |
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397 return hash; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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398 |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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399 default: |
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400 hash *= 37; |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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401 #if __I86__ |
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402 hash += *(const uint32_t *)str; |
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Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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403 #else |
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404 hash += ((str[0] * 256 + str[1]) * 256 + str[2]) * 256 + str[3]; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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405 #endif |
f04dde6e882c
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406 str += 4; |
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407 len -= 4; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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408 break; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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409 } |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
410 } |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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411 } |
f04dde6e882c
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412 |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
413 hash_t Dchar::icalcHash(const dchar *str, size_t len) |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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414 { |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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415 hash_t hash = 0; |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
416 |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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|
417 while (1) |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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418 { |
f04dde6e882c
Added initial D2 support, D2 frontend and changes to codegen to make things compile.
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419 switch (len) |
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420 { |
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421 case 0: |
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422 return hash; |
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423 |
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424 case 1: |
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425 hash *= 37; |
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426 hash += *(const uint8_t *)str | 0x20; |
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427 return hash; |
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428 |
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429 case 2: |
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430 hash *= 37; |
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431 hash += *(const uint16_t *)str | 0x2020; |
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432 return hash; |
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433 |
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434 case 3: |
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435 hash *= 37; |
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436 hash += ((*(const uint16_t *)str << 8) + |
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437 ((const uint8_t *)str)[2]) | 0x202020; |
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438 return hash; |
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439 |
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440 default: |
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441 hash *= 37; |
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442 hash += *(const uint32_t *)str | 0x20202020; |
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443 str += 4; |
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444 len -= 4; |
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445 break; |
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446 } |
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447 } |
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448 } |
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449 |
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450 #endif |
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451 |
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452 #if 0 |
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453 #include <stdio.h> |
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454 |
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455 void main() |
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456 { |
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457 // Print out values to hardcode into Dchar::mblen[] |
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458 int c; |
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459 int s; |
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460 |
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461 for (c = 0; c < 256; c++) |
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462 { |
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463 s = 1; |
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464 if (c >= 0xC0 && c <= 0xDF) |
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465 s = 2; |
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466 if (c >= 0xE0 && c <= 0xEF) |
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467 s = 3; |
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468 if (c >= 0xF0 && c <= 0xF7) |
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469 s = 4; |
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470 if (c >= 0xF8 && c <= 0xFB) |
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471 s = 5; |
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472 if (c >= 0xFC && c <= 0xFD) |
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473 s = 6; |
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474 |
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475 printf("%d", s); |
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476 if ((c & 15) == 15) |
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477 printf(",\n"); |
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478 else |
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479 printf(","); |
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480 } |
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481 } |
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482 #endif |