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annotate modules/string.tp @ 154:6e579a75a0a9

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Add JSON parser and sample
author Mike Pavone <pavone@retrodev.com>
date Sat, 10 Aug 2013 11:51:47 -0700
parents a6739206a9e3
children 55e0dca7d3d7
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1 #{
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2 llProperty: len withType: uint32_t
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3 llProperty: bytes withType: uint32_t
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4 llProperty: data withType: (char ptr)
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5
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6 llMessage: length withVars: {
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7 intret <- (obj_int32 ptr)
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8 } andCode: {
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9 intret <- make_object: (addr_of: obj_int32_meta) NULL 0
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10 intret num!: len
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11 intret
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12 }
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14 llMessage: byte_length withVars: {
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15 intret <- (obj_int32 ptr)
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16 } andCode: {
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17 intret <- make_object: (addr_of: obj_int32_meta) NULL 0
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18 intret num!: bytes
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19 intret
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20 }
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22 llMessage: EQ_ withVars: {
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23 argb <- (string ptr)
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24 } andCode: :argb {
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25 if: len = (argb len) && bytes = (argb bytes) && (not: (memcmp: data (argb data) bytes)) {
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26 true
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27 }
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28 }
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30 llMessage: NEQ_ withVars: {
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31 argb <- (string ptr)
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32 } andCode: :argb {
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33 if: len != (argb len) || bytes != (argb bytes) || (memcmp: data (argb data) bytes) {
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34 true
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35 }
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36 }
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38 llMessage: print withVars: {} andCode: {
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39 fwrite: data 1 bytes stdout
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40 self
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41 }
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43 llMessage: string withVars: {} andCode: {
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44 self
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45 }
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47 llMessage: CAT_ withVars: {
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48 argbo <- (object ptr)
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49 argb <- (string ptr)
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50 out <- (string ptr)
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51 } andCode: :argbo {
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52 argb <- mcall: string 1 argbo
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53 out <- make_object: (addr_of: string_meta) NULL 0
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54 out bytes!: bytes + (argb bytes)
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55 out len!: len + (argb len)
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56 out data!: (GC_MALLOC_ATOMIC: (out bytes) + 1)
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57 memcpy: (out data) data bytes
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58 memcpy: (out data) + bytes (argb data) (argb bytes) + 1
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59 out
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60 }
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62 llMessage: byte withVars: {
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63 index <- (obj_int32 ptr)
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64 intret <- (obj_int32 ptr)
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65 } andCode: :index {
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66 intret <- make_object: (addr_of: obj_int32_meta) NULL 0
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67 intret num!: (if: (index num) < bytes { data get: (index num) } else: {0})
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68 intret
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69 }
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71 llMessage: int32 withVars: {
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72 intret <- (obj_int32 ptr)
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73 } andCode: {
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74 intret <- make_object: (addr_of: obj_int32_meta) NULL 0
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75 intret num!: (atoi: data)
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76 intret
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77 }
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79 llMessage: hash withVars: {
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80 intret <- (obj_int32 ptr)
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81 i <- uint32_t
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82 } andCode: {
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83 intret <- make_object: (addr_of: obj_int32_meta) NULL 0
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84 intret num!: 0
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85 if: bytes {
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86 intret num!: (data get: 0) * 128
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87 i <- 0
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88 while: { i < bytes } do: {
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89 intret num!: (1000003 * (intret num)) xor (data get: i)
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90 i <- i + 1
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91 }
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92 intret num!: (intret num) xor bytes
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93 }
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94 intret
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95 }
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96
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97 llMessage: find:startingAt:else withVars: {
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98 intret <- obj_int32 ptr
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99 oneedle <- object ptr
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100 startpos <- obj_int32 ptr
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101 ifNotFound <- object ptr
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102 sneedle <- string ptr
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103 i <- uint32_t
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104 notFound <- uint32_t
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105 } andCode: :oneedle :startpos :ifNotFound {
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106 sneedle <- mcall: string 1 oneedle
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107 i <- startpos num
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108 notFound <- 1
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109 while: { notFound && i + (sneedle bytes) <= bytes} do: {
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110 if: (memcmp: data + i (sneedle data) (sneedle bytes)) = 0 {
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111 notFound <- 0
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112 } else: {
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113 i <- i + 1
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114 }
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115 }
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116 if: notFound {
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117 ccall: ifNotFound 0
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118 } else: {
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119 intret <- make_object: (addr_of: obj_int32_meta) NULL 0
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120 intret num!: i
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121 intret
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122 }
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123 }
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124
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125 find:else <- :toFind :orElse {
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126 find: toFind startingAt: 0 else: orElse
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127 }
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128
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129 llMessage: from:withLength withVars: {
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130 from <- obj_int32 ptr
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131 tocopy <- obj_int32 ptr
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132 ret <- string ptr
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133 start <- int32_t
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134 clampedLen <- int32_t
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135 } andCode: :from :tocopy {
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136 start <- from num
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137 if: start < 0 {
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138 start <- bytes + start
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139 }
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140 if: start > bytes {
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141 start <- bytes
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142 }
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143 clampedLen <- tocopy num
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144 if: start + clampedLen > bytes {
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145 clampedLen <- bytes - start
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146 }
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147 ret <- make_object: (addr_of: string_meta) NULL 0
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148 ret data!: (GC_MALLOC_ATOMIC: clampedLen + 1)
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149 memcpy: (ret data) data + start clampedLen
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150 ret len!: clampedLen
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151 ret bytes!: clampedLen
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152 ret
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153 }
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154
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155 from <- :start {
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156 from: start withLength: length
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157 }
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158
152
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159 partitionOn <- :delim {
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160 pos <- find: delim else: { -1 }
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161 if: pos >= 0 {
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162 _before <- from: 0 withLength: pos
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163 _after <- from: (pos + (delim length))
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164 #{
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165 before <- _before
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166 after <- _after
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167 }
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168 } else: {
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169 _before <- self
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170 #{
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171 before <- _before
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172 after <- ""
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173 }
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174 }
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175 }
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176
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177 splitOn <- :delim {
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178 pos <- 0
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179 pieces <- #[]
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180 while: {
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181 pos <- find: delim else: { -1 }
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182 pos >= 0
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183 } do: {
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184 pieces append: (from: 0 withLength: pos)
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185 self <- from: pos + (delim length)
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186 }
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187 pieces append: self
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188 }
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189
147
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190 isInteger? <- { false }
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191 isString? <- { true }
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192 }