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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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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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178
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11 import dmd.TObject;
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12
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13 class String : TObject
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0
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14 {
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15 string str;
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16
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17 this(string str)
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18 {
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178
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19 register();
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20 this.str = str;
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21 }
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22
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23 static hash_t calcHash(const(char)* str, size_t len)
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24 {
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25 hash_t hash = 0;
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26
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27 for (;;)
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28 {
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29 switch (len)
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30 {
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31 case 0:
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32 return hash;
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33
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34 case 1:
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35 hash *= 37;
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36 hash += *cast(ubyte*)str;
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37 return hash;
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38
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39 case 2:
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40 hash *= 37;
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41 hash += *cast(ushort*)str;
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42 return hash;
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43
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44 case 3:
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45 hash *= 37;
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46 hash += (*(cast(ushort*)str) << 8) +
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47 (cast(ubyte*)str)[2];
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48 return hash;
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49
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50 default:
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51 hash *= 37;
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52 hash += *cast(uint*)str;
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53 str += 4;
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54 len -= 4;
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55 break;
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56 }
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57 }
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58 }
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59
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60 static hash_t calcHash(string str)
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61 {
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62 return calcHash(str.ptr, str.length);
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63 }
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64
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65 hash_t hashCode()
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66 {
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67 return calcHash(str.ptr, str.length);
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68 }
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69
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70 uint len()
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71 {
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72 return str.length;
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73 }
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74
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45
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75 bool equals(Object obj)
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0
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76 {
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77 return str == (cast(String)obj).str;
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78 }
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79
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72
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80 override int opCmp(Object obj)
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81 {
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82 return cmp(str, (cast(String)obj).str);
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83 }
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84
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85 string toChars()
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86 {
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87 return str;
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88 }
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89
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90 void print()
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91 {
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92 writefln("String '%s'", str);
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93 }
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72
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94 }
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