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1 module dmd.String;
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2
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114
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3 import dmd.common;
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0
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4 import dmd.Array;
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5
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6 import core.stdc.string : strlen;
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7 import std.string : cmp;
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8
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9 import std.stdio : writefln;
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10
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11 class String
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12 {
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13 string str;
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14
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15 this(string str)
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16 {
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17 this.str = str;
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18 }
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19
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20 static hash_t calcHash(const(char)* str, size_t len)
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21 {
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22 hash_t hash = 0;
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23
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24 for (;;)
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25 {
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26 switch (len)
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27 {
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28 case 0:
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29 return hash;
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30
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31 case 1:
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32 hash *= 37;
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33 hash += *cast(ubyte*)str;
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34 return hash;
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35
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36 case 2:
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37 hash *= 37;
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38 hash += *cast(ushort*)str;
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39 return hash;
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40
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41 case 3:
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42 hash *= 37;
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43 hash += (*(cast(ushort*)str) << 8) +
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44 (cast(ubyte*)str)[2];
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45 return hash;
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46
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47 default:
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48 hash *= 37;
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49 hash += *cast(uint*)str;
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50 str += 4;
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51 len -= 4;
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52 break;
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53 }
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54 }
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55 }
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56
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57 static hash_t calcHash(string str)
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58 {
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59 return calcHash(str.ptr, str.length);
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60 }
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61
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62 hash_t hashCode()
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63 {
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64 return calcHash(str.ptr, str.length);
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65 }
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66
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67 uint len()
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68 {
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69 return str.length;
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70 }
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71
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45
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72 bool equals(Object obj)
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0
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73 {
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74 return str == (cast(String)obj).str;
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75 }
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76
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72
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77 override int opCmp(Object obj)
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0
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78 {
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79 return cmp(str, (cast(String)obj).str);
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80 }
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81
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82 string toChars()
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83 {
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84 return str;
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85 }
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86
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87 void print()
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88 {
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89 writefln("String '%s'", str);
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90 }
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72
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91 }
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