Mercurial > repos > tabletprog
annotate cbackend.js @ 49:f2cda2e6f70e
Fix os open to optionally take a file permission bit parameter. Update example to use this parameter. Add support for hex and binary integer literals
author | Mike Pavone <pavone@retrodev.com> |
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date | Fri, 13 Jul 2012 14:16:51 -0700 |
parents | 18ab96287c3a |
children | ab6217b8ae4c |
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1 var mainModule; |
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2 var modules = {}; |
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3 |
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4 var nextmethodId = 0; |
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5 var methodIds = {}; |
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6 function getMethodId(methodName) |
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7 { |
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8 if (!(methodName in methodIds)) { |
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9 methodIds[methodName] = nextmethodId++; |
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10 |
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11 } |
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12 return methodIds[methodName]; |
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13 } |
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14 |
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15 function importSym(obj, src, key) |
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16 { |
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17 if(!(key in src)) { |
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18 throw new Error(key +' not found in source object for import'); |
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19 } |
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20 if(key in obj) { |
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21 throw new Error(key +' already exists in target object for import') |
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22 } |
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23 obj[key] = src[key]; |
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24 } |
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25 |
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26 function doImport(obj, src, symlist) |
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27 { |
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28 if (symlist === undefined) { |
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29 each(src, function(key,val) { |
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30 if (key != 'parent') { |
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31 importSym(obj, src, key); |
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32 } |
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33 }); |
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34 } else { |
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35 for (var i = 0; i < symlist.length; ++i) { |
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36 importSym(obj, src, symlist[i]); |
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37 } |
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38 } |
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39 return obj; |
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40 } |
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41 |
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42 op.prototype.toC = function(isReceiver) { |
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43 var optoMeth = {'+': 'ADD_', '-': 'SUB_', '*': 'MUL_', '/': 'DIV_', '=': 'EQ_', '!=': 'NEQ_', '<': 'LT_', '>': 'GT_', '>=': 'GEQ_', '<=': 'LEQ_', '.': 'CAT_'}; |
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44 var method = optoMeth[this.op]; |
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45 return 'mcall(' + getMethodId(method) + ', 2, ' + this.left.toC() + ', ' + this.right.toC() + ')\n'; |
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46 }; |
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47 |
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48 function escapeCName(name) |
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49 { |
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50 if (name == 'self') { |
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51 return name; |
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52 } |
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53 name = name.replace("_", "UN_").replace(":", "CN_").replace("!", "EX_").replace('?', 'QS_').replace('@', 'AT_'); |
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54 name = 'tp_' + name; |
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55 return name; |
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56 } |
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57 |
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58 function getSymbolPrefix(info) |
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59 { |
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60 var pre = ''; |
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61 switch(info.type) { |
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62 case 'self': |
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63 pre = 'self->'; |
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64 break; |
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65 case 'parent': |
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66 pre = 'self->'; |
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67 for (var i = 0; i < info.depth; ++i) { |
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68 pre += 'parent->'; |
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69 } |
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70 break; |
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71 case 'upvar': |
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72 pre = 'env->'; |
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73 for (var i = 1; i < info.depth; ++i) { |
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74 pre += 'parent->'; |
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75 } |
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76 break; |
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77 case 'recupvar': |
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78 if (info.subtype == 'object') { |
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79 pre = 'self->env->'; |
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80 } else { |
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81 //TODO: fill this case in if necessary |
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82 } |
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83 pre += getSymbolPrefix(info.parent); |
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84 case 'closedover': |
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85 pre = 'myenv->'; |
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86 } |
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87 return pre; |
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88 } |
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89 |
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90 symbol.prototype.toC = function() { |
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91 var name = this.cleanName(); |
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92 var info = this.symbols.find(name); |
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93 if (!info) { |
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94 throw new Error('symbol ' + name + ' not found'); |
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95 } |
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96 if (info.type == 'toplevel') { |
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97 return info.def.modulevar; |
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98 } |
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99 return getSymbolPrefix(info) + escapeCName(name); |
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100 } |
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101 |
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102 var declaredInts = {}; |
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103 |
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104 intlit.prototype.toC = function() { |
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105 var str = this.val.toString(); |
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106 if (!(this.val in declaredInts)) { |
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107 toplevelcode += 'obj_int32 int32_' + str + ' = {{&obj_int32_meta, NULL}, ' + str + '};\n'; |
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108 declaredInts[this.val] = true; |
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109 } |
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110 return '((object *)&int32_' + str + ')'; |
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111 } |
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112 |
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113 floatlit.prototype.toC = function() { |
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114 return 'make_float(' + this.val.toString() + ')'; |
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115 } |
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116 |
41 | 117 var declaredStrings = {}; |
118 var nextStringId = 0; | |
119 | |
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120 strlit.prototype.toC = function() { |
41 | 121 if (!(this.val in declaredStrings)) { |
122 //TODO: get the proper byte length | |
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123 toplevelcode += 'string str_' + nextStringId + ' = {{&string_meta, NULL}, ' + this.val.length + ', ' + this.val.length + ', "' + this.val.replace('\\', '\\\\').replace('"', '\\"').replace('\n', '\\n').replace('\r', '\\r') + '"};\n'; |
41 | 124 declaredStrings[this.val] = nextStringId++; |
125 } | |
126 return '((object *)&str_' + declaredStrings[this.val] + ')'; | |
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127 } |
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128 |
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129 listlit.prototype.toC = function() { |
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130 var ret = 'make_list(' + this.val.length; |
38 | 131 for (var i = 0; i < this.val.length; i++) { |
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132 ret += ', ' + this.val[i].toC(); |
38 | 133 } |
134 return ret + ')'; | |
135 } | |
136 | |
137 arraylit.prototype.toC = function() { | |
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138 var ret = 'make_array(' + this.val.length; |
38 | 139 for (var i = 0; i < this.val.length; i++) { |
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140 ret += ', ' + this.val[i].toC(); |
38 | 141 } |
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142 return ret + ')'; |
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143 } |
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144 |
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145 funcall.prototype.toC = function() { |
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146 var name = this.name[this.name.length-1] == ':' ? this.name.substr(0, this.name.length-1) : this.name; |
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147 if (name == 'foreign') { |
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148 if ((this.args[0] instanceof lambda) || (this.args[0] instanceof object)) { |
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149 return null; |
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150 } else if(this.args[0] instanceof symbol) { |
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151 return this.args[0].name; |
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152 } else { |
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153 throw new Error("Unexpected AST type for foreign:"); |
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154 } |
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155 } |
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156 var args = this.args.slice(0, this.args.length); |
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157 if (this.receiver) { |
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158 args.splice(0, 0, this.receiver); |
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159 } |
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160 var method = false; |
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161 var funinfo = this.symbols.find(name); |
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162 if (!funinfo || funinfo.def instanceof setter) { |
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163 method = true; |
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164 } else { |
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165 switch(funinfo.type) |
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166 { |
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167 case 'self': |
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168 |
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169 if (args.length < funinfo.def.args.length || !funinfo.def.args.length || funinfo.def.args[0].name != 'self') { |
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170 args.splice(0, 0, new symbol('self', this.symbols)); |
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171 } else { |
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172 args.splice(0, 1); |
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173 } |
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174 method = true; |
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175 break; |
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176 case 'parent': |
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177 ret = 'self'; |
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178 for (var i = 0; i < funinfo.depth; ++i) { |
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179 ret += '->parent'; |
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180 } |
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181 break; |
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182 } |
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183 } |
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184 for (var i in args) { |
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185 args[i] = ', ' + args[i].toC(); |
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186 } |
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187 var callpart; |
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188 if (method) { |
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189 callpart = 'mcall(' + getMethodId(name); |
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190 } else { |
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191 callpart = 'ccall(' + escapeCName(name); |
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192 } |
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193 return callpart + ', ' + args.length + args.join('') + ')'; |
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194 } |
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195 |
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196 function cObject(name) { |
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197 this.name = name; |
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198 this.slots = {}; |
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199 this.properties = []; |
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200 this.values = []; |
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201 this.slotvars = {}; |
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202 this.includes = {}; |
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203 } |
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204 |
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205 cObject.prototype.addInclude = function(includefile) { |
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206 this.includes[includefile] = true; |
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207 } |
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208 |
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209 cObject.prototype.addMessage = function(msgname, implementation) { |
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210 var methodid = getMethodId(msgname); |
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211 var trunc = methodid & 0xF; |
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212 if (!(trunc in this.slots)) { |
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213 this.slots[trunc] = []; |
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214 } |
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215 this.slots[trunc].push([methodid, '\t\t' + implementation.lines.join('\n\t\t') + '\n', msgname]); |
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216 if (!(trunc in this.slotvars)) { |
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217 this.slotvars[trunc] = {}; |
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218 } |
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219 for (var varname in implementation.vars) { |
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220 this.slotvars[trunc][varname] = implementation.vars[varname]; |
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221 } |
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222 } |
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223 |
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224 cObject.prototype.addProperty = function(propname, value, type) { |
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225 if (type != undefined) { |
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226 this.properties.push([propname, type]); |
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227 if (value !== null) { |
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228 this.values.push(value); |
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229 } |
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230 } else { |
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231 var escaped = escapeCName(propname); |
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232 this.addMessage(propname, { |
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233 vars: {}, |
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234 lines: [ |
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235 'va_end(args);', |
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236 'return self->' + escaped + ';' |
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237 ]}); |
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238 this.addMessage(propname + '!', { |
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239 vars: {setval: 'object *'}, |
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240 lines: [ |
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241 'setval = va_arg(args, object *);', |
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242 'va_end(args);', |
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243 'self->' + escaped + ' = setval;', |
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244 'return (object *)self;' |
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245 ]}); |
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246 this.properties.push(escaped); |
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247 this.values.push(value); |
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248 } |
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249 } |
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250 |
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251 cObject.prototype.toEarlyCDef = function() { |
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252 var includes = ''; |
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253 for (var file in this.includes) { |
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254 includes += '#include ' + file + '\n'; |
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255 } |
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256 var objdef = 'typedef struct {\n\tobject header;\n'; |
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257 for (var i in this.properties) { |
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258 if (this.properties[i] instanceof Array) { |
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259 objdef += '\t' + this.properties[i][1] + ' ' + this.properties[i][0] + ';\n'; |
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260 } else { |
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261 objdef += '\tobject * ' + this.properties[i] + ';\n' |
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262 } |
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263 } |
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264 objdef += '} ' + this.name + ';\nobj_meta ' + this.name + '_meta;\n'; |
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265 return includes + objdef; |
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266 } |
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267 |
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268 cObject.prototype.toCDef = function() { |
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269 var slotdefs = ''; |
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270 var metadef = 'obj_meta ' + this.name + '_meta = {sizeof(' + this.name +'), {'; |
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271 for (var i = 0; i < 16; i++) { |
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272 if (i) { |
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273 metadef += ', '; |
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274 } |
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275 if (i in this.slots) { |
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276 slotdefs += 'object * ' + this.name + '_slot_' + i + '(uint32_t method_id, uint32_t num_params, object * oself, va_list args) {\n\t' + |
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277 this.name + ' *self = (' + this.name + ' *)oself;\n'; |
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278 for (var varname in this.slotvars[i]) { |
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279 slotdefs += '\t' + this.slotvars[i][varname] + ' ' + varname + ';\n'; |
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280 } |
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281 if (this.slots[i].length == 1) { |
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282 slotdefs += '\tif (method_id == ' + this.slots[i][0][0] + ') { /* ' + this.slots[i][0][2] + '*/\n' + |
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283 '\t\t' + this.slots[i][0][1] + '\n' + |
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284 '\t}\n' + |
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285 '\treturn no_impl(method_id, num_params, (object *)self, args);\n}\n'; |
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286 } else { |
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287 slotdefs += '\tswitch(method_id) {\n'; |
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288 for (j in this.slots[i]) { |
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289 slotdefs += '\t\tcase ' + this.slots[i][j][0] + ': /* ' + this.slots[i][j][2] + '*/\n' + |
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290 '\t\t\t' + this.slots[i][j][1] + '\n'; |
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291 } |
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292 slotdefs += '\t\tdefault:\n' + |
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293 '\treturn no_impl(method_id, num_params, params, args);\n}\n'; |
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294 } |
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295 metadef += this.name + '_slot_' + i; |
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296 } else { |
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297 metadef += 'no_impl'; |
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298 } |
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299 } |
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300 metadef += '}};\n'; |
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301 return slotdefs + metadef; |
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302 } |
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303 |
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304 cObject.prototype.toCInstance = function() { |
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305 return 'make_object(&' + this.name + '_meta, NULL, ' + this.values.length + (this.values.length ? ', ' : '') + this.values.join(', ') + ')'; |
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306 } |
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307 |
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308 cObject.prototype.toC = function() { |
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309 forwarddec += this.toEarlyCDef(); |
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310 toplevelcode += this.toCDef(); |
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311 return this.toCInstance(); |
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312 } |
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313 |
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314 var nextobject = 0; |
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315 |
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316 object.prototype.toC = function() { |
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317 var messages = this.messages; |
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318 var values = []; |
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319 var imports = [] |
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320 var me = new cObject('object_' + nextobject++); |
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321 if (this.symbols.needsenv) { |
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322 me.addProperty('env', this.symbols.envVar(), 'struct ' + this.symbols.getEnvType() + ' * '); |
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323 me.hasenv = true; |
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324 } |
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325 for (var i in messages) { |
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326 if (messages[i] instanceof funcall) { |
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327 if (messages[i].name == 'import:' && messages[i].args.length == 1) { |
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328 imports.push({symbols: false, src: messages[i].args[0]}); |
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329 } else if(messages[i].name == 'import:from:' && messages[i].args.length == 2) { |
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330 var importsyms = []; |
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331 each(messages[i].args[0].val, function(i, el) { |
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332 if (!(el instanceof symbol)) { |
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333 throw new Error('Names in import:from statement must be symbols'); |
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334 } |
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335 importsyms.push(new strlit(el.name)); |
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336 }); |
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337 imports.push({symbols: new listlit(importsyms), src: messages[i].args[1]}); |
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338 } else { |
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339 throw new Error('Only import and import:from calls allowed in object context'); |
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340 } |
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341 } else { |
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342 messages[i].toCObject(me); |
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343 } |
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344 } |
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345 |
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346 return me.toC(); |
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347 } |
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348 |
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349 var toplevelcode; |
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350 var forwarddec; |
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351 |
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352 function addBinaryOp(cobject, opname, cop, objtype) |
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353 { |
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354 cobject.addMessage(opname, { |
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355 vars: {ret: objtype + ' *', argb: objtype +' *'}, |
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356 lines: [ |
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357 'argb = va_arg(args, ' + objtype + ' *);', |
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358 'ret = (' + objtype + ' *)make_object(&' + objtype + '_meta, NULL, 0);', |
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359 'ret->num = self->num ' + cop + ' argb->num;', |
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360 'return ret;' |
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361 ] |
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362 }); |
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363 } |
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364 |
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365 function addCompOp(cobject, opname, cop, objtype) |
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366 { |
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367 cobject.addMessage(opname, { |
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368 vars: {argb: objtype + ' *'}, |
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369 lines: [ |
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370 'argb = va_arg(args, ' + objtype + ' *);', |
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371 'if (self->num ' + cop + ' argb->num) {', |
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372 ' return mcall(METHOD_ID_TRUE, 1, main_module);', |
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373 '}', |
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374 'return mcall(METHOD_ID_FALSE, 1, main_module);' |
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375 ] |
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376 }); |
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377 } |
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378 |
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379 function makeInt32() |
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380 { |
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381 var int32 = new cObject('obj_int32'); |
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382 int32.addProperty('num', null, 'int32_t'); |
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383 addBinaryOp(int32, 'ADD_', '+', 'obj_int32'); |
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384 addBinaryOp(int32, 'SUB_', '-', 'obj_int32'); |
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385 addBinaryOp(int32, 'MUL_', '*', 'obj_int32'); |
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386 addBinaryOp(int32, 'DIV_', '/', 'obj_int32'); |
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387 addCompOp(int32, 'LT_', '<', 'obj_int32'); |
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388 addCompOp(int32, 'GT_', '>', 'obj_int32'); |
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389 addCompOp(int32, 'EQ_', '==', 'obj_int32'); |
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390 addCompOp(int32, 'NEQ_', '!=', 'obj_int32'); |
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391 addCompOp(int32, 'GEQ_', '>=', 'obj_int32'); |
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392 addCompOp(int32, 'LEQ_', '<=', 'obj_int32'); |
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393 int32.addMessage('string', { |
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394 vars: {str: 'string *'}, |
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395 lines: [ |
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396 'str = (string *)make_object(&string_meta, NULL, 0);', |
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397 'str->data = malloc(12);', |
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398 'sprintf(str->data, "%d", self->num);', |
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399 'str->length = str->bytes = strlen(str->data);', |
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400 'return (object *)str;' |
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401 ] |
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402 }); |
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403 return int32; |
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404 } |
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405 |
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406 function makeArray() |
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407 { |
38 | 408 var array = new cObject('array'); |
409 array.addProperty('size', null, 'uint32_t'); | |
410 array.addProperty('storage', null, 'uint32_t'); | |
411 array.addProperty('data', null, 'object **'); | |
412 array.addMessage('get', { | |
413 vars: {index: 'obj_int32 *'}, | |
414 lines: [ | |
415 'index = va_arg(args, obj_int32 *);', | |
416 'if (index->num >= 0 && index->num < self->size) {', | |
417 ' return self->data[index->num];', | |
418 '}', | |
419 'return mcall(METHOD_ID_FALSE, 1, main_module);' | |
420 ] | |
421 }); | |
422 array.addMessage('set', { | |
423 vars: {index: 'obj_int32 *'}, | |
424 lines: [ | |
425 'index = va_arg(args, obj_int32 *);', | |
426 'if (index->num >= 0 && index->num < self->size) {', | |
427 ' self->data[index->num] = va_arg(args, object *);', | |
428 '}', | |
429 'return (object *)self;' | |
430 ] | |
431 }); | |
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432 array.addMessage('foreach', { |
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433 vars: {index: 'obj_int32 *', i: 'int32_t', clos: 'lambda *'}, |
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434 lines: [ |
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435 'clos = va_arg(args, lambda *);', |
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436 'for (i = 0; i < self->size; i++) {', |
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437 ' index = (obj_int32 *)make_object(&obj_int32_meta, NULL, 0);', |
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438 ' index->num = i;', |
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439 ' ccall(clos, 2, index, self->data[i]);', |
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440 '}', |
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441 'return (object *)self;' |
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442 ] |
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443 }); |
40
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444 array.addMessage('append', { |
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445 vars: {tmp: 'object *'}, |
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446 lines: [ |
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447 'if (self->storage == self->size) {', |
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448 ' self->storage *= 2;', |
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449 ' tmp = realloc(self->data, self->storage);', |
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450 ' if (!tmp) {', |
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451 ' fputs("Failed to increase array size\\n", stderr);', |
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452 ' exit(1);', |
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453 ' }', |
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454 ' self->data = tmp;', |
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455 '}', |
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456 'self->data[self->size++] = va_arg(args, object *);', |
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457 'return self;' |
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458 ] |
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459 }); |
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460 return array; |
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461 } |
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462 |
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463 function makeString() |
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464 { |
41 | 465 var string = new cObject('string'); |
466 string.addProperty('length', null, 'uint32_t'); | |
467 string.addProperty('bytes', null, 'uint32_t'); | |
468 string.addProperty('data', null, 'char *'); | |
469 string.addMessage('length', { | |
470 vars: {intret: 'obj_int32 *'}, | |
471 lines: [ | |
472 'intret = (obj_int32 *)make_object(&obj_int32_meta, NULL, 0);', | |
473 'intret->num = self->length;', | |
474 'return &(intret->header);' | |
475 ] | |
476 }); | |
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477 string.addMessage('byte_length', { |
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478 vars: {intret: 'obj_int32 *'}, |
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479 lines: [ |
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480 'intret = (obj_int32 *)make_object(&obj_int32_meta, NULL, 0);', |
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481 'intret->num = self->bytes;', |
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482 'return &(intret->header);' |
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483 ] |
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484 }); |
41 | 485 string.addMessage('EQ_', { |
486 vars: {argb: 'string *'}, | |
487 lines: [ | |
488 'argb = va_arg(args, string *);', | |
489 'if (self->length == argb->length && self->bytes == argb->bytes && !memcmp(self->data, argb->data, self->bytes)) {', | |
490 ' return mcall(METHOD_ID_TRUE, 1, main_module);', | |
491 '}', | |
492 'return mcall(METHOD_ID_FALSE, 1, main_module);' | |
493 ] | |
494 }); | |
495 string.addMessage('print', { | |
496 vars: {}, | |
497 lines: [ | |
498 'fwrite(self->data, 1, self->bytes, stdout);', | |
499 'return self;' | |
500 ] | |
501 }); | |
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502 string.addMessage('string', { |
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503 vars: {}, |
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504 lines: [ 'return self;' ] |
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505 }); |
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506 string.addMessage('CAT_', { |
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507 vars: {argbo: 'object *', argb: 'string *', out: 'string *'}, |
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508 lines: [ |
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509 'argbo = va_arg(args, object *);', |
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510 'argb = mcall(' + getMethodId('string') + ', 1, argbo);', |
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511 'out = (string *)make_object(&string_meta, NULL, 0);', |
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512 'out->bytes = self->bytes + argb->bytes;', |
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513 'out->length = self->length + argb->length;', |
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514 'out->data = malloc(out->bytes+1);', |
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515 'memcpy(out->data, self->data, self->bytes);', |
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516 'memcpy(out->data + self->bytes, argb->data, argb->bytes + 1);', |
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517 'return out;' |
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518 ] |
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519 }); |
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520 string.addMessage('byte', { |
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521 vars: {index: 'obj_int32 *', intret: 'obj_int32 *'}, |
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522 lines: [ |
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523 'index = va_arg(args, obj_int32 *);', |
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524 'intret = make_object(&obj_int32_meta, NULL, 0);', |
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525 'intret->num = index->num < self->bytes ? self->data[index->num] : 0;', |
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526 'return intret;' |
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527 ] |
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528 }); |
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529 return string; |
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530 } |
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531 |
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532 function makelambda() |
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533 { |
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534 var clos = new cObject('lambda'); |
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535 clos.addProperty('env', null, 'void *'); |
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536 clos.addProperty('func', null, 'closure_func'); |
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537 clos.addMessage('while:do', { |
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538 vars: {action: 'lambda *', valtrue: 'object *', ret: 'object *'}, |
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539 lines: [ |
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540 'action = va_arg(args, lambda *);', |
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541 'valtrue = mcall(METHOD_ID_TRUE, 1, main_module);', |
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542 'ret = valtrue;', |
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543 'while(valtrue == ccall(self, 0)) {', |
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544 ' ccall(action, 0);', |
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545 '}', |
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546 'return ret;' |
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547 ] |
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548 }); |
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549 return clos; |
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550 } |
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551 |
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552 function builtinTypes() |
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553 { |
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554 return [makeInt32(), makeArray(), makeString(), makelambda()]; |
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555 } |
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556 |
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557 function addBuiltinModules(toplevel) |
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558 { |
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559 var os = new cObject('mod_obj_os'); |
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560 os.addInclude('<sys/stat.h>'); |
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561 os.addInclude('<fcntl.h>'); |
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562 os.addMessage('write', { |
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563 vars: {str: 'string *', intret: 'obj_int32 *', filedes: 'obj_int32 *'}, |
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564 lines: [ |
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565 'filedes = va_arg(args, obj_int32 *);', |
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566 'str = va_arg(args, string *);', |
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567 'intret = make_object(&obj_int32_meta, NULL, 0);', |
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568 'intret->num = write(filedes->num, str->data, str->bytes);', |
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569 'return intret;' |
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570 ] |
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571 }); |
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572 os.addMessage('read', { |
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573 vars: {str: 'string *', size: 'obj_int32 *', filedes: 'obj_int32 *'}, |
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574 lines: [ |
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575 'filedes = va_arg(args, obj_int32 *);', |
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576 'size = va_arg(args, obj_int32 *);', |
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577 'str = make_object(&string_meta, NULL, 0);', |
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578 'str->data = malloc(size->num + 1);', |
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579 'str->length = str->bytes = read(filedes->num, str->data, size->num);', |
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580 'str->data[str->bytes+1] = 0;', |
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581 'return str;' |
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582 ] |
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583 }); |
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584 os.addMessage('open', { |
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585 vars: {str: 'string *', flags: 'obj_int32 *', filedes: 'obj_int32 *', perm: 'obj_int32 *'}, |
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586 lines: [ |
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587 'str = va_arg(args, string *);', |
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588 'flags = va_arg(args, obj_int32 *);', |
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589 'filedes = make_object(&obj_int32_meta, NULL, 0);', |
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590 'if (num_params == 3) {', |
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591 ' filedes->num = open(str->data, flags->num);', |
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592 '} else if (num_params == 4) {', |
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593 ' perm = va_arg(args, obj_int32 *);', |
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594 ' filedes->num = open(str->data, flags->num, perm->num);', |
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595 '} else {', |
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596 ' filedes->num = -1;', |
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597 '}', |
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598 'return filedes;' |
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599 ] |
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600 }); |
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601 os.addMessage('close', { |
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602 vars: {filedes: 'obj_int32 *', intret: 'obj_int32 *'}, |
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603 lines: [ |
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604 'filedes = va_arg(args, obj_int32 *);', |
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605 'intret = make_object(&obj_int32_meta, NULL, 0);', |
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606 'intret->num = close(filedes->num);', |
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607 'return intret;' |
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608 ] |
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609 }); |
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610 os.addMessage('O_RDONLY', { |
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611 vars: {intret: 'obj_int32 *'}, |
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612 lines: [ |
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613 'intret = make_object(&obj_int32_meta, NULL, 0);', |
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614 'intret->num = O_RDONLY;', |
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615 'return intret;' |
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616 ] |
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617 }); |
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618 os.addMessage('O_WRONLY', { |
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619 vars: {intret: 'obj_int32 *'}, |
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620 lines: [ |
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621 'intret = make_object(&obj_int32_meta, NULL, 0);', |
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622 'intret->num = O_WRONLY;', |
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623 'return intret;' |
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624 ] |
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625 }); |
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626 os.addMessage('O_RDWR', { |
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627 vars: {intret: 'obj_int32 *'}, |
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628 lines: [ |
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629 'intret = make_object(&obj_int32_meta, NULL, 0);', |
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630 'intret->num = O_RDWR;', |
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631 'return intret;' |
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632 ] |
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633 }); |
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634 os.addMessage('O_CREAT', { |
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635 vars: {intret: 'obj_int32 *'}, |
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636 lines: [ |
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637 'intret = make_object(&obj_int32_meta, NULL, 0);', |
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638 'intret->num = O_CREAT;', |
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639 'return intret;' |
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640 ] |
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641 }); |
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642 os.addMessage('O_APPEND', { |
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643 vars: {intret: 'obj_int32 *'}, |
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644 lines: [ |
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645 'intret = make_object(&obj_int32_meta, NULL, 0);', |
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646 'intret->num = O_APPEND;', |
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647 'return intret;' |
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648 ] |
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649 }); |
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650 os.addMessage('O_TRUNC', { |
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651 vars: {intret: 'obj_int32 *'}, |
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652 lines: [ |
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653 'intret = make_object(&obj_int32_meta, NULL, 0);', |
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654 'intret->num = O_TRUNC;', |
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655 'return intret;' |
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656 ] |
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657 }); |
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658 toplevel.names['os'] = os; |
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659 } |
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660 |
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661 function processUsedToplevel(toplevel) |
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662 { |
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663 var ret = ''; |
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664 var modulenum = 0; |
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665 for (var symbol in toplevel.used) { |
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666 ret += '\tmodule_' + (modulenum) + ' = ' + toplevel.names[symbol].toC() + ';\n'; |
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667 toplevelcode += 'object * module_' + modulenum + ';\n'; |
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668 toplevel.names[symbol].modulevar = 'module_' + (modulenum++); |
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669 } |
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670 return ret; |
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671 } |
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672 |
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673 function makeCProg(obj) |
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674 { |
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675 var builtins = builtinTypes(); |
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676 forwarddec = toplevelcode = ''; |
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677 for (var i in builtins) { |
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678 forwarddec += builtins[i].toEarlyCDef(); |
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679 toplevelcode += builtins[i].toCDef(); |
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680 } |
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681 addBuiltinModules(toplevel); |
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682 obj.populateSymbols(toplevel); |
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683 var moduleinit = processUsedToplevel(toplevel); |
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684 var rest = 'object * mainModule() {\n' + moduleinit + '\tmain_module = ' + obj.toC() + ';\n\treturn main_module;\n}\n'; |
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685 return '#include "runtime/proghead.inc"\n' + |
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686 '#define METHOD_ID_MAIN ' + getMethodId('main') + '\n' + |
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687 '#define METHOD_ID_TRUE ' + getMethodId('true') + '\n' + |
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688 '#define METHOD_ID_FALSE ' + getMethodId('false') + '\n' + |
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689 forwarddec + toplevelcode + rest + '#include "runtime/progfoot.inc"\n'; |
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690 } |
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691 |
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692 object.prototype.toCModule = function() { |
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693 return makeCProg(this); |
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694 } |
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695 |
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696 var lambdanum = 0; |
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697 |
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698 lambda.prototype.toC = function() { |
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699 var args = this.args ? this.args.slice(0, this.args.length) : []; |
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700 var exprs = this.expressions; |
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701 var mynum = lambdanum++; |
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702 if (Object.keys(this.symbols.closedover).length) { |
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703 this.symbols.envtype = 'lambda_' + mynum + '_env'; |
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704 } |
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705 if (this.selftype) { |
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706 this.symbols.defineVar('self', this.selftype); |
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707 if (args[0] && args[0].cleanName() == 'self') { |
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708 args.splice(0, 1); |
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709 } |
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710 var offset = 1; |
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711 } else { |
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712 var offset = 0; |
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713 } |
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714 for (var i = 0; i < args.length; ++i) { |
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715 var argname = args[i].toC(); |
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716 |
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717 args[i] = (argname.indexOf('->') < 0 ? '\tobject * ' : '\t') + argname + ' = va_arg(args, object *);\n'; |
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718 } |
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719 var compiled = [] |
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720 for (var i in exprs) { |
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721 var js = exprs[i].toC(); |
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722 if (js) { |
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723 compiled.push(indent(js)); |
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724 } |
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725 } |
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726 exprs = compiled; |
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727 if (exprs.length) { |
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728 exprs[exprs.length-1] = 'return ' + exprs[exprs.length-1] + ';'; |
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729 } |
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730 |
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731 if (Object.keys(this.symbols.closedover).length) { |
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732 forwarddec += 'typedef struct lambda_' + mynum + '_env {\n'; |
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733 for (var varname in this.symbols.closedover) { |
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734 forwarddec += '\tobject * ' + escapeCName(varname) + ';\n'; |
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735 } |
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736 forwarddec += '} lambda_' + mynum + '_env;\n' |
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737 |
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738 var myenvinit = '\tlambda_' + mynum + '_env * myenv = malloc(sizeof(lambda_' + mynum + '_env));\n'; |
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739 this.symbols.envtype = 'lambda_' + mynum + '_env'; |
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740 } else { |
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741 var myenvinit = ''; |
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742 } |
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743 |
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744 toplevelcode += 'object * lambda_' + mynum + ' (' + this.symbols.parentEnvType() + ' * env, uint32_t num_args, ...) {\n\tva_list args;\n' + myenvinit + '\tva_start(args, num_args);\n'; |
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745 if (this.selftype) { |
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746 var selfvar = (new symbol('self', this.symbols)).toC(); |
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747 if (selfvar == 'self') { |
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748 toplevelcode += '\t' + this.selftype + ' * self = va_arg(args, ' + this.selftype + ' *);\n'; |
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749 } else { |
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|
750 toplevelcode += '\t' + selfvar + ' = va_arg(args, ' + this.selftype + ' *);\n'; |
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751 } |
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752 |
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753 } |
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|
754 toplevelcode += args.join('') + '\tva_end(args);\n' + exprs.join(';\n\t') + '\n}\n'; |
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755 |
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756 if (this.selftype) { |
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757 return 'lambda_' + mynum; |
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|
758 } else { |
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759 if (this.symbols.parentEnvType() != 'void') { |
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|
760 if (this.symbols.passthruenv) { |
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|
761 var envvar = 'env'; |
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|
762 } else { |
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|
763 var envvar = 'myenv'; |
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764 } |
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765 return 'make_lambda(' + envvar + ', lambda_' + mynum + ')'; |
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766 } else { |
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767 toplevelcode += 'lambda lambda_obj_' + mynum + ' = {{&lambda_meta, NULL}, NULL, lambda_' + mynum + '};\n'; |
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768 return '((object *)&lambda_obj_' + mynum + ')'; |
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769 } |
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770 } |
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771 }; |
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|
772 lambda.prototype.toCObject = function(typename) { |
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|
773 this.selftype = typename; |
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774 return this.toC(); |
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775 }; |
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776 lambda.prototype.toCModule = function() { |
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777 return makeCProg(this); |
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778 } |
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779 |
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780 assignment.prototype.toC = function() { |
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781 var existing = this.symbols.find(this.symbol.name); |
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782 var prefix = ''; |
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783 var val = this.expression.toC(); |
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784 if (val === null) { |
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785 return null; |
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786 } |
38 | 787 if (existing.type == 'local' && !existing.isdeclared) { |
788 prefix = 'object *'; | |
789 this.symbols.declareVar(this.symbol.name); | |
790 } | |
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791 return prefix + this.symbol.toC() + ' = ' + val; |
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792 }; |
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793 assignment.prototype.toCObject = function(cobj) { |
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794 if (this.expression.toCObject) { |
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795 var val = this.expression.toCObject(cobj.name); |
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796 } else { |
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797 var val = this.expression.toC(); |
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798 } |
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799 if (val === null) { |
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800 return; |
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801 } |
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802 if (this.expression instanceof lambda) { |
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803 var params = ['((object *)self)']; |
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804 var paramget = ''; |
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805 var messagevars = {}; |
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806 for (var i in this.expression.args) { |
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807 var escaped = escapeCName(this.expression.args[i].cleanName()); |
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808 if (escaped != 'self') { |
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809 messagevars[escaped] = 'object *'; |
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810 params.push(escaped); |
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811 paramget += escaped + ' = va_arg(args, object *); '; |
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812 } |
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813 } |
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814 cobj.addMessage(this.symbol.name, { |
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815 vars: messagevars, |
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816 lines: [paramget + 'return ' + val + '(' + (cobj.hasenv ? 'self->env' : 'NULL') + ', ' + params.length + (params.length ? ', ' : '') + params.join(', ') + ');'] |
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817 }); |
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818 } else { |
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819 cobj.addProperty(this.symbol.name, val); |
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820 } |
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821 }; |