Mercurial > repos > rhope
annotate string.rhope @ 51:7d6a6906b648
Added integer type conversions and started on the implementation of String
author | Mike Pavone <pavone@retrodev.com> |
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date | Thu, 22 Apr 2010 02:18:26 -0400 |
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children | 079200bc3e75 |
rev | line source |
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51
7d6a6906b648
Added integer type conversions and started on the implementation of String
Mike Pavone <pavone@retrodev.com>
parents:
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1 |
7d6a6906b648
Added integer type conversions and started on the implementation of String
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2 Blueprint Null String |
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3 { |
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Added integer type conversions and started on the implementation of String
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4 } |
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5 |
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6 Null String[:out(Null String)] |
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7 { |
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8 out <- Build[Null String()] |
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9 } |
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10 |
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11 Depth@Null String[in:out(Int32)] |
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12 { |
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13 out <- 0i32 |
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14 } |
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15 |
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16 Blueprint Base String |
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17 { |
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18 Buffer |
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19 Length(Int32,Naked) |
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20 } |
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21 |
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22 UTF8 Expect[num,arr,index,count,consumed:out] |
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23 { |
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24 byte <- [arr]Index[index] |
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25 { |
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26 If[[128u8]>[byte]] |
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27 { |
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28 //Error: ASCII byte when we were expecting part of a mutlibyte sequence |
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29 //treat each byte as a separate character |
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30 ncount <- [1i32]+[[count]+[consumed]] |
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31 }{ |
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32 If[[192u8]>[byte]] |
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33 { |
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34 If[[num]=[1]] |
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35 { |
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36 //Sequence is complete count as single character |
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37 ncount <- [1i32]+[count] |
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38 }{ |
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39 out <- UTF8 Expect[[num]-[1], arr, [index]+[1], count, [1i32]+[consumed]] |
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40 } |
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41 }{ |
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42 //Error: too high to be a continuation byte |
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43 ncount <- [1i32]+[[count]+[consumed]] |
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44 } |
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45 } |
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46 }{ |
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47 //Error: string ended in the middle of a multi-byte sequence |
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48 out <- [count]+[consumed] |
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49 } |
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50 Val[ncount] |
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51 { |
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52 [arr]Next[index] |
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53 { |
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54 out <- Count UTF8[arr, ~, ncount] |
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55 }{ |
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56 out <- Val[ncount] |
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57 } |
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58 } |
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59 } |
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60 |
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61 Count UTF8[arr,index,count:out] |
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62 { |
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63 byte <- [arr]Index[index] |
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64 If[[128u8]>[byte]] |
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65 { ncount <- [1i32]+[count] } |
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66 { |
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67 If[[192u8]>[byte]] |
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68 { |
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69 //Error: Encoding for 2nd,3rd or 4th byte of sequence |
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70 //treat as a single character |
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71 ncount <- [1i32]+[count] |
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72 }{ |
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73 If[[224u8]>[byte]] |
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74 { |
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75 out <- UTF8 Expect[1, arr, [index]+[1], count, 1] |
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76 }{ |
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77 If[[240u8]>[byte]] |
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78 { |
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79 out <- UTF8 Expect[2, arr, [index]+[1], count, 1] |
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80 }{ |
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81 If[[245u8]>[byte]] |
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82 { |
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83 out <- UTF8 Expect[3, arr, [index]+[1], count, 1] |
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84 }{ |
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85 //Error: Out of range of Unicode standard |
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86 //treat as a single character |
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87 ncount <- [1i32]+[count] |
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88 } |
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89 } |
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90 } |
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91 } |
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92 } |
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93 [arr]Next[index] |
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94 { |
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95 out <- Count UTF8[arr, ~, ncount] |
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96 }{ |
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97 out <- Val[ncount] |
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98 } |
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99 } |
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100 |
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101 Blueprint String |
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102 { |
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103 Left |
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104 Right |
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105 L Offset(Int32,Naked) |
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106 L Length(Int32,Naked) |
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107 Depth(Int32,Naked) |
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108 Length(Int32,Naked) |
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109 } |
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110 |
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111 String[in(Array):out(Base String)] |
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112 { |
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113 out <- [[Build[Base String()]]Buffer <<[in]]Length <<[Count UTF8[in, 0, 0]] |
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114 } |
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115 |
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116 Main[] |
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117 { |
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118 text <- [[[[[[[[[[[[[Array[1] |
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119 ]Append[36u8] |
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120 ]Append[194u8] |
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121 ]Append[162u8] |
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122 ]Append[236u8] |
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123 ]Append[130u8] |
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124 ]Append[172u8] |
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125 ]Append[240u8] |
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126 ]Append[164u8] |
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127 ]Append[173u8] |
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128 ]Append[162u8] |
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129 ]Append[194u8] |
7d6a6906b648
Added integer type conversions and started on the implementation of String
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
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130 ]Append[36u8] |
7d6a6906b648
Added integer type conversions and started on the implementation of String
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
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131 ]Append[162u8] |
7d6a6906b648
Added integer type conversions and started on the implementation of String
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
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132 Print[Count UTF8[text, 0, 0]] |
7d6a6906b648
Added integer type conversions and started on the implementation of String
Mike Pavone <pavone@retrodev.com>
parents:
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133 } |
7d6a6906b648
Added integer type conversions and started on the implementation of String
Mike Pavone <pavone@retrodev.com>
parents:
diff
changeset
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134 |