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Add length method to executable bytearrays
author Michael Pavone <pavone@retrodev.com>
date Fri, 10 Apr 2015 00:48:12 -0700
parents f987bb2a1911
children f74ce841fd1e
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1 {
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2 _compileError <- :_msg _line {
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3 #{
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4 isError? <- { true }
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5 msg <- { _msg }
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6 line <- { _line }
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7 }
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8 }
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9
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10 _notError <- :vals ifnoterr {
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11 if: (object does: vals understand?: "find") {
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12 maybeErr <- vals find: :val {
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13 (object does: val understand?: "isError?") && val isError?
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14 }
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15 maybeErr value: :err {
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16 err
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17 } none: ifnoterr
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18 } else: ifnoterr
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19 }
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20
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21 _ilFun <- :_name {
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22 _buff <- #[]
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23 _blockStack <- []
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24 _nextReg <- 0
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25 #{
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26 name <- { _name }
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27 add <- :inst { _buff append: inst }
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28 getReg <- {
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29 r <- il reg: _nextReg
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30 _nextReg <- _nextReg + 1
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31 r
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32 }
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33 startBlock <- {
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34 _blockStack <- _buff | _blockStack
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35 _buff <- #[]
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36 }
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37 popBlock <- {
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38 res <- _buff
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39 _buff <- _blockStack value
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40 _blockStack <- _blockStack tail
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41 res
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42 }
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43 buffer <- { _buff }
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44 }
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45 }
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46
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47 _exprHandlers <- false
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48 _compileExpr:syms:ilfun:dest <- :expr :syms :ilf :dst {
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49 _exprHandlers ifget: (expr nodeType) :handler {
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50 handler: expr syms ilf dst
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51 } else: {
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52 _compileError: "Expression with node type " . (expr nodeType) . " not implemented yet"
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53 }
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54 }
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55 _opMap <- false
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56
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57 _compOps <- false
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58
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59 _compileBinary <- :expr syms ilf assignTo {
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60 _assignSize? <- false
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61 _asize <- 0
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62 dest <- option value: assignTo :asn {
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63 _assignSize? <- true
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64 _asize <- asn size
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65 asn
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66 } none: {
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67 ilf getReg
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68 }
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69 l <- _compileExpr: (expr left) syms: syms ilfun: ilf assign: (option value: dest)
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70 r <- _compileExpr: (expr right) syms: syms ilfun: ilf assign: (option none)
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71 _notError: [(l) (r)] {
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72 lv <- l val
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73 ls <- l size
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74 rv <- r val
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75 rs <- r size
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76 _size <- if: ls > rs { ls } else: { rs }
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77 _signed <- (ls signed?) || (rs signed?)
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78 _opMap ifget: (expr op) :ingen {
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79 ilf add: (ingen: lv rv (dest val) _size)
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80 #{
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81 val <- dest
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82 size <- _size
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83 signed? <- _signed
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84 }
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85 } else: {
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86 _compOps ifget: (expr op) :cond {
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87 ilf add: (il bool: cond dest)
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88 #{
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89 val <- dest
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90 size <- il b
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91 signed? <- false
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92 }
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93 } else: {
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94 _compileError: "Operator " . (expr op) . " is not supported yet\n" 0
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95 }
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96 }
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97 }
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98 }
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99 _compileString <- :expr syms ilf assignTo {
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100
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101 }
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102 _compileInt <- :expr syms ilf assignTo {
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103 expr
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104 }
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105 _compileSym <- :expr syms ilf assignTo {
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106 syms ifDefined: (expr name) :def {
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107 def
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108 } else: {
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109 _compileError: "Symbol " . (expr name) . " is not defined in " . (ilf name)
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110 }
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111 }
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112 _compileIf <- :expr syms ilf assignTo {
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113 if: ((expr args) length) != 2 {
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114 _compileError: "if takes exactly 2 arguments" 0
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115 } else: {
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116 condArg <- (expr args) value
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117 blockArg <- ((expr args) tail) value
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118 cond <- _compileExpr: condArg syms: syms ilfun: ilf dest: (option none)
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119 _notError: [cond] {
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120 if: (blockArg nodeType) != (ast lambda) {
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121 _compileError: "second argument to if must be a lambda"
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122 } else: {
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123 ilf add: (il cmp: condArg 0 (condArg size))
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124 //TODO: Deal with if in return position
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125 ilf startBlock
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126 foreach: (blockArg expressions) :idx expr{
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127 _compileExpr: expr syms: syms ilfun: ilf dest: (option none)
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128 }
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129 block <- ilf popBlock
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130 ilf add: (il skipIf: (il neq) block)
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131 }
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132 }
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133 }
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134 }
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135 _compileIfElse <- :expr syms ilf assignTo {
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136 if: ((expr args) length) != 2 {
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137 _compileError: "if takes exactly 2 arguments" 0
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138 } else: {
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139 condArg <- (expr args) value
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140 blockArg <- ((expr args) tail) value
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141 elseArg <- (((expr args) tail) tail) value
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142 cond <- _compileExpr: condArg syms: syms ilfun: ilf dest: (option none)
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143 _notError: [cond] {
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144 if: (blockArg nodeType) != (ast lambda) {
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145 _compileError: "second argument to if:else must be a lambda"
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146 } else: {
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147 if: (elseArg nodeType) != (ast lambda) {
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148 _compileError: "third argument to if:else must be a lambda"
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149 } else: {
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150 ilf add: (il cmp: condArg 0 (condArg size))
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151 //TODO: Deal with if:else in return position
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152 ilf startBlock
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153 foreach: (blockArg expressions) :idx expr {
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154 _compileExpr: expr syms: syms ilfun: ilf dest: (option none)
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155 }
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156 block <- ilf popBlock
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157 ilf startBlock
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158 foreach: (elseArg expressions) :idx expr {
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159 _compileExpr: expr syms: syms ilfun: ilf dest: (option none)
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160 }
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161 elseblock <- ilf popBlock
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162 ilf add: (il skipIf: (il neq) block else: elseblock)
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163 }
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164 }
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165 }
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166 }
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167 }
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168 _funMap <- false
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169 _compileCall <- :expr syms ilf assignTo {
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170 if: ((expr tocall) nodeType) = (ast sym) && (_funMap contains?: ((expr tocall) name)) {
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171 handler <- _funMap get: ((expr tocall) name) else: { false }
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172 handler: expr syms ilf assignTo
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173 } else: {
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174 ctocall <- _compileExpr: (expr tocall) syms: syms ilfuN: ilf dest: (option none)
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175 cargs <- (expr args) map: :arg {
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176 _compileExpr: arg syms: syms ilfun: ilf dest: (option none)
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177 }
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178 _notError: ctocall | cargs {
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179 ilf add: (il call: ctocall withArgs: cargs)
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180 il retr
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181 }
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182 }
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183 }
310
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184
315
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185 _compileAssign <- :expr syms ilf assignTo {
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186 dest <- _compileExpr: (expr to) syms: syms ilfun: ilf dest: (option none)
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187 _notError: [dest] {
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188 value <- _compileExpr: (expr assign) syms: syms ilfun: ilf dest: dest
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189 _notError: [value] {
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190 //TODO: adjust size of value if necessary
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191 ilf add: (il mov: (value val) (dest val) (dest size))
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192 value
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193 }
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194 }
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195 }
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196
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197 _initDone? <- false
310
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198 #{
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199 import: [
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200 binary
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201 stringlit
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202 intlit
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203 sym
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204 call
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205 obj
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206 sequence
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207 assignment
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208 lambda
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209 ] from: ast
315
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210 _initHandlers <- {
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211 if: (not: _initDone?) {
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212 _exprHandlers <- dict hash
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213 _exprHandlers set: binary _compileBinary
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214 _exprHandlers set: stringlit _compileString
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215 _exprHandlers set: intlit _compileInt
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216 _exprHandlers set: sym _compileSym
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217 _exprHandlers set: assignment _compileAssign
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218 _exprHandlers set: call _compileCall
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219
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220 _opMap <- dict hash
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221 mapOp <- macro: :op ilfun {
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222 quote: (_opMap set: op :ina inb out size {
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223 il ilfun: ina inb out size
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224 })
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225 }
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226 mapOp: "+" add
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227 mapOp: "-" sub
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228 mapOp: "*" mul
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229 mapOp: "/" div
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230 mapOp: "and" band
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231 mapOp: "or" bor
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232 mapOp: "xor" bxor
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233
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234 _compOps <- dict hash
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235 _compOps set: "=" :signed? { il eq }
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236 _compOps set: "!=" :signed? { il ne }
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237 _compOps set: ">" :signed? { if: signed? { il gr } else: { il ugr } }
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238 _compOps set: "<" :signed? { if: signed? { il ls } else: { il uls } }
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239 _compOps set: ">=" :signed? { if: signed? { il ge } else: { il uge } }
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240 _compOps set: "<=" :signed? { if: signed? { il le } else: { il ule } }
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241
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242 _funMap <- dict hash
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243 _funMap set: "if" _compileIf
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244 _funMap set: "if:else" _compileIfElse
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245 //_funMap set: "while:do" _compileWhileDo
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246 }
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247 }
310
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248
315
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249 llFun:syms:vars:code <- :name :syms :vars :code{
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250 _initHandlers:
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251 syms <- symbols tableWithParent: syms
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252 argnames <- dict hash
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253 foreach: (code args) :idx arg {
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254 if: (arg startsWith?: ":") {
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255 arg <- arg from: 1
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256 }
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257 argnames set: arg true
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258 }
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259 ilf <- _ilFun: name
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260 _nextReg <- 0
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261 foreach: vars :idx var {
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262 type <- _parseType: (var assign)
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263 varname <- ((var to) name)
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264 v <- argnames ifget: varname :argnum {
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265 il arg: argnum
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266 } else: {
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267 ilf getReg
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268 }
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269 syms define: varname #{
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270 val <- v
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271 size <- (type size)
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272 }
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273 }
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274 last <- option none
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275 numexprs <- code length
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276 foreach: code :idx expr {
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277 asn <- option none
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278 if: idx = numexprs - 1 {
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279 option value: (il retr)
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280 }
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281 last <- option value: (_compileExpr: expr syms: syms ilfun: ilf dest: asn)
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282 }
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283 last value: :v {
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284 ilf add: (il return: (v val) (v size))
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285 } none: {
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286 ilf add: (il return: 0 (il l))
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287 }
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288 ilf
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289 }
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290
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291 compileText <- :text {
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292 res <- parser top: text
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293 if: res {
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294 tree <- res yield
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295 if: (tree nodeType) = obj {
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296 errors <- []
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297 syms <- symbols table
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298 functions <- tree messages fold: [] :curfuncs msg {
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299 if: (msg nodeType) = call {
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300 if: ((msg tocall) name) = "llFun:withVars:andCode" {
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301 if: ((msg args) length) = 3 {
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302 fname <- ((msg args) get: 0) name
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303 syms define: fname #{
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304 type <- "topfun"
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305 }
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306 #{
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307 name <- fname
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308 vars <- (msg args) get: 1
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309 body <- (msg args) get: 2
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310 } | curfuncs
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311 } else: {
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312 errors <- (
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313 _compileError: "llFun:withVars:andCode takes exactly 3 arguments" 0
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314 ) | errors
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315 curfuncs
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316 }
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317 } else: {
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318 errors <- (
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319 _compileError: "Only llFun:withVars:andCode expressions are allowed in top level object" 0
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320 ) | errors
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321 curfuncs
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322 }
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323 } else: {
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324 errors <- (
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325 _compileError: "Only call expresions are allowed in top level object" 0
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326 ) | errors
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327 curfuncs
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328 }
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329 }
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330 if: (errors empty?) {
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331 fmap <- functions fold: (dict hash) with: :acc func {
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332 _notError: acc {
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333 ilf <- llFun: (func name) syms: syms vars: (func vars) code: (func body)
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334 _notError: ilf {
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335 acc set: (func name) (ilf buffer)
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336 }
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337 }
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338 }
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339 fmap toBackend: x86
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340 } else: {
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341 errors
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342 }
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343 } else: {
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344 [(_compileError: "Top level must be an object in llcompile dialect" 1)]
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345 }
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346 } else: {
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347 [(_compileError: "Failed to parse file" 0)]
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348 }
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349 }
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350
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351 main <- :args {
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352 if: (length: args) > 1 {
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353 text <- (file open: (args get: 1)) readAll
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354 mcode <- compileText: text
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355 _notError: mcode {
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356 ba <- bytearray executableFromBytes: mcode
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357 arg <- if: (length: args) > 2 { int32: (args get: 2) } else: {0}
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358 ba runWithArg: (arg i64)
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359 }
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360 } else: {
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361 (file stderr) write: "Usage: llcompile FILE\n"
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362 1
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363 }
310
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364 }
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365 }
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366 }