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Some untested progress on String
author Mike Pavone <pavone@retrodev.com>
date Thu, 08 Jul 2010 09:57:16 -0400
parents f7bcf3db1342
children 4d5ea487f810
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52
079200bc3e75 String literals almost working. Print moved out of C runtime.
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2 UTF8 Expect[num,arr,index,count,consumed:out]
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3 {
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4 byte <- [arr]Index[index]
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5 {
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6 If[[128u8]>[byte]]
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7 {
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8 //Error: ASCII byte when we were expecting part of a mutlibyte sequence
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9 //treat each byte as a separate character
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10 ncount <- [1i32]+[[count]+[consumed]]
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11 }{
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12 If[[192u8]>[byte]]
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13 {
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14 If[[num]=[1]]
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15 {
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16 //Sequence is complete count as single character
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17 ncount <- [1i32]+[count]
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18 }{
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19 out <- UTF8 Expect[[num]-[1], arr, [index]+[1], count, [1i32]+[consumed]]
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20 }
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21 }{
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22 //Error: too high to be a continuation byte
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23 ncount <- [1i32]+[[count]+[consumed]]
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24 }
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25 }
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26 }{
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27 //Error: string ended in the middle of a multi-byte sequence
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28 out <- [count]+[consumed]
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29 }
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30 Val[ncount]
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31 {
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32 [arr]Next[index]
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33 {
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34 out <- Count UTF8[arr, ~, ncount]
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35 }{
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36 out <- Val[ncount]
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37 }
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38 }
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39 }
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40
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41 Count UTF8[arr,index,count:out]
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42 {
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43 byte <- [arr]Index[index]
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44 If[[128u8]>[byte]]
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45 { ncount <- [1i32]+[count] }
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46 {
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47 If[[192u8]>[byte]]
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48 {
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49 //Error: Encoding for 2nd,3rd or 4th byte of sequence
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50 //treat as a single character
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51 ncount <- [1i32]+[count]
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52 }{
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53 If[[224u8]>[byte]]
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54 {
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55 out <- UTF8 Expect[1, arr, [index]+[1], count, 1]
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56 }{
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57 If[[240u8]>[byte]]
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58 {
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59 out <- UTF8 Expect[2, arr, [index]+[1], count, 1]
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60 }{
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61 If[[245u8]>[byte]]
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62 {
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63 out <- UTF8 Expect[3, arr, [index]+[1], count, 1]
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64 }{
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65 //Error: Out of range of Unicode standard
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66 //treat as a single character
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67 ncount <- [1i32]+[count]
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68 }
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69 }
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70 }
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71 }
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72 }
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73 [arr]Next[index]
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74 {
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75 out <- Count UTF8[arr, ~, ncount]
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76 }{
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77 out <- Val[ncount]
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78 }
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79 }
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80
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81 Blueprint String
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82 {
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83 Buffer
51
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84 Length(Int32,Naked)
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85 }
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86
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a748300a4143 Some untested progress on String
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87 String@Array[in:out(String)]
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88 {
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89 out <- [[Build[String()]]Buffer <<[in]]Length <<[Count UTF8[in, 0, 0]]
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90 }
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91
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92 Print@String[string:out]
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93 {
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94 //TODO: Sanitize string (remove terminal escapes and replace invalid UTF)
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95 write[1i32, [string]Buffer >>, Int64[[[string]Buffer >>]Length >>]]
69
d0ce696786cc Clean up debug print statements a bit. Fix bug that prevented workers that took no inputs from working. Remove workaround in Array for said bug.
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96 { out <- write[1i32, [Array[]]Append[10u8], 1i64] }
55
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97 }
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98
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99 Get Char[:out]
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100 {
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101 read[0, [Array[]]Set[0, 0u8], 1i64]
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102 {}
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103 { out <- String[~] }
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104 }
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105
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106 _String to Int32[current,index,array:out]
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107 {
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108 char <- [array]Index[index]
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109 {
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110 If[[char]<[48u8]]
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111 {
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112 out <- Val[current]
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113 }{
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114 If[[char]>[57u8]]
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115 {
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116 out <- Val[current]
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117 }{
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118 out <- _String to Int32[[[current]*[10i32]]+[Int32[[char]-[48u8]]], [index]+[1], array]
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119 }
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120 }
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121
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122 }{
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123 out <- Val[current]
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124 }
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125 }
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126
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127 Int32@String[string:out]
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128 {
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129 buf <- [string]Buffer >>
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130 [buf]Index[0]
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131 {
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132 If[[~]=[45u8]]
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133 {
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134 out <- [0i32]-[_String to Int32[0i32, 1, buf]]
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135 }{
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136 out <- _String to Int32[0i32, 0, buf]
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137 }
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138 }{
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139 out <- 0i32
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140 }
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141
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142 }
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143
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144 Flatten@String[string:out]
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145 {
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146 out <- string
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147 }
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148
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149 _CPOff to BOff[buff,cur,expected:outcur,outboff]
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150 {
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151 If[expected]
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152 {
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153 outcur <- cur
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154 outboff <- 0i32
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155 }{
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156 err <- If[[byte]>[192u8]] {}
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157 {
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158 err <- If[[byte]<[128u8]] {}
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159 {
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160 outcur <- _CPOff to BOff[buff, [cur]+[1i32], [expected]-[1i32]] {}
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161 { outboff <- [~]+[1i32] }
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162 }
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163 }
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164
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165 Val[err]
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166 {
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167 outcur <- [cur]+[1i32]
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168 outboff <- 1i32
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169 }
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170 }
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171 }
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172
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173 CPOff to BOff[buff,cur,boff,cpoff:out]
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174 {
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175 If[[cur]=[cpoff]]
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176 {
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177 out <- boff
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178 }{
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179 byte <- [buff]Index[cur]
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180 If[[byte] < [128u8]]
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181 {
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182 nboff <- [bof]+[1i32]
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183 ncur <- [cur]+[1i32]
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184 }{
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185 If[[byte]<[192u8]]
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186 {
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187 //Error: Encoding for 2nd,3rd or 4th byte of sequence
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188 //treat as a single character
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189 nboff <- [bof]+[1i32]
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190 ncur <- [cur]+[1i32]
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191 }{
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192 If[[byte]<[224u8]]
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193 {
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194 expect <- 1i32
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195 }{
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196 If[[byte]<[240u8]]
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197 {
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198 expect <- 2i32
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199 }{
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200 If[[byte]<[245u8]]
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201 {
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202 expect <- 3i32
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203 }{
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204 //Error
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205 nboff <- [bof]+[1i32]
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206 ncur <- [cur]+[1i32]
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207 }
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208 }
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209 }
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210 Val[expect]
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211 {
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212 ncur <- _CPOff to BOff[buff, [cur]+[1i32], expect] {}
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213 { nboff <- [1i32]+[~] }
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214 }
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215 }
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216 }
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217 out <- CPOff to BOff[buff, ncur, cpoff, nboff]
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218 }
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219 }
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220
55
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221 Slice@String[string,slicepoint:left,right]
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222 {
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223 //TODO: Handle invalid slicepoints
77
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224 sliceoffset <- CPOff to BOff[[string]Buffer >>, 0i32, 0i32, slicepoint]
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225 left <- String Slice[string, 0i32, slicepoint, sliceoffset]
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226 right <- String Slice[string, sliceoffset, [[string]Length >>]-[slicepoint], [[[string]Buffer >>]Length]-[sliceoffset]]
55
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227 }
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228
72
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229 Byte@String[string,index:out,invalid]
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230 {
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231 out,invalid <- [[string]Buffer >>]Index[index]
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232 }
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233
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234 Length@String[string:out]
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235 {
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236 out <- [string]Length >>
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237 }
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238
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diff changeset
239 _=String[left,right,index:out]
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240 {
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diff changeset
241 [left]Byte[index]
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diff changeset
242 {
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diff changeset
243 ,out <- If[[~]=[[right]Byte[index]]]
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diff changeset
244 {
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diff changeset
245 out <- _=String[left,right,[index]+[1]]
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diff changeset
246 }
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diff changeset
247 }{
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diff changeset
248 out <- Yes
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249 }
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diff changeset
250 }
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diff changeset
251
77
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diff changeset
252 Eq String[left,right:out]
72
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diff changeset
253 {
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diff changeset
254 ,out <- If[[[left]Length] = [[right]Length]]
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diff changeset
255 {
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diff changeset
256 out <- _=String[left,right,0]
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diff changeset
257 }
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diff changeset
258 }
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diff changeset
259
77
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diff changeset
260 =@String[left,right:out]
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diff changeset
261 {
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diff changeset
262 out <- Eq String[left,right]
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263 }
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diff changeset
264
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diff changeset
265 Byte Length@String[string:out]
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diff changeset
266 {
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diff changeset
267 out <- [[string]Buffer >>]Length
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268 }
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diff changeset
269
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diff changeset
270 Append@String[left,right:out]
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diff changeset
271 {
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diff changeset
272 out <- String Cat[left,right]
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diff changeset
273 }
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diff changeset
274
55
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diff changeset
275 Blueprint String Slice
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diff changeset
276 {
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diff changeset
277 Source
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diff changeset
278 Offset(Int32,Naked)
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diff changeset
279 Length(Int32,Naked)
77
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diff changeset
280 ByteLen(Int32,Naked)
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diff changeset
281 }
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diff changeset
282
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diff changeset
283 String Slice[source,offset,length,bytelen:out(String Slice)]
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diff changeset
284 {
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diff changeset
285 out <- [[[[Build[String Slice()]]Source <<[source]]Offset <<[offset]]Length <<[length]]ByteLen <<[bytelen]
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diff changeset
286 }
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diff changeset
287
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diff changeset
288 Byte@String Slice[string,index:out,invalid]
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diff changeset
289 {
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diff changeset
290 ,invalid <- If[[index]<[[string]ByteLen >>]]
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diff changeset
291 {
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diff changeset
292 out,invalid <- [[string]Source >>]Byte[[index]+[[string]Offset >>]]
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diff changeset
293 }
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diff changeset
294 }
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diff changeset
295
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diff changeset
296 Byte Length@String Slice[string:out]
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diff changeset
297 {
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diff changeset
298 out <- [string]ByteLen >>
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diff changeset
299 }
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diff changeset
300
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diff changeset
301 =@String Slice[left,right:out]
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diff changeset
302 {
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diff changeset
303 out <- Eq String[left,right]
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diff changeset
304 }
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diff changeset
305
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diff changeset
306 _Flatten@String[string,dest,offset,count:out]
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diff changeset
307 {
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308 If[count]
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309 {
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310 out <- [string]_Flatten[[dest]Append[ [[string]Buffer >>]Index[offset] ], [offset]+[1i32], [count]-[1i32]]
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311 }{
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312 out <- dest
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313 }
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314 }
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315
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316 Flatten@String[string:out]
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317 {
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318 out <- string
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319 }
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320
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321 _Flatten@String Slice[string,dest,offset,count:out]
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322 {
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323 out <- [[string]Source >>]_Flatten[dest, [[string]Offset >>]+[offset], count]
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324 }
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325
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326 Flatten@String Slice[string:out]
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327 {
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328 out <- String[ [[string]Source >>]_Flatten[Array[], [string]Offset >>, [string]ByteLen >>] ]
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329 }
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330
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331 Append@String Slice[left,right:out]
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332 {
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333 out <- String Cat[left,right]
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334 }
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335
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336 Blueprint String Cat
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337 {
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338 Left
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339 Right
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340 Length
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341 ByteLen
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342 }
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343
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344 String Cat[left,right:out]
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345 {
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346 out <- [[[[Build[String Cat()]
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347 ]Left <<[left]
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348 ]Right <<[right]
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349 ]Length <<[ [[left]Length]+[[right]Length] ]
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350 ]ByteLen <<[ [[left]Byte Length]+[[right]Byte Length] ]
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351 }
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352
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353 Append@String Cat[left,right:out]
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354 {
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355 out <- String Cat[left,right]
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356 }
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357
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358 Byte@String Cat[string,index:out,invalid]
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359 {
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360 leftlen <- [[string]Left >>]Byte Length
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361 If[[index]<[leftlen]]
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362 {
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363 out,invalid <- [[string]Left >>]Byte[index]
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364 }{
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365 rindex <- [index]-[leftlen]
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366 ,invalid <- If[[rindex]<[[[string]Right >>]Byte Length]]
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367 {
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368 out,invalid <- [[string]Right >>]Byte[rindex]
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369 }
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370 }
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371 }
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372
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373 Byte Length@String Cat[string:out]
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374 {
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375 out <- [string]ByteLen >>
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376 }
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377
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378 _Flatten@String Cat[string,dest,offset,count:out]
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379 {
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380 [string]Left >>
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381 }
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382