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annotate tpc.js @ 237:dae093baf36c

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Optimized implementation of character classes
author Mike Pavone <pavone@retrodev.com>
date Sun, 05 Jan 2014 17:00:33 -0800
parents 2dac67e9d18b
children 2557ce4e671f
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
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1 var module = {exports: {}};
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2 var console = {log: function(text){}};
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3 var PEG;
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4
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5 var file = null;
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6 var argtype = 'normal';
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7 var includes = ['.'];
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8 var basedir = '';
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9 var debugmode = false;
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10 var backend = 'C';
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11 var macroonly = false;
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12 for (var i = 0; i < arguments.length; i++) {
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13 switch (argtype) {
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14 case 'normal':
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15 switch (arguments[i]) {
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16 case '-basedir':
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17 case '-i':
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18 case '-backend':
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19 argtype = arguments[i];
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20 break;
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21 case '-compilerdebug':
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22 debugmode = true;
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23 break;
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24 case '-m':
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25 macroonly = true;
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26 break;
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27 default:
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28 if (arguments[i].charAt(0) == '-') {
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29 print("unrecognized switch", arguments[i]);
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30 quit(1);
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31 }
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32 file = arguments[i];
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33 }
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34 break;
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35 case '-basedir':
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36 if (basedir == '') {
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37 basedir = arguments[i];
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38 argtype = 'normal';
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39 } else {
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40 print("only one -basedir option allowed");
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41 quit(1);
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42 }
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43 break;
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44 case '-i':
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45 includes.push(arguments[i]);
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46 argtype = 'normal';
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47 break;
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48 case '-backend':
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49 backend = arguments[i];
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50 argtype = 'normal';
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51 break;
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52 }
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53 }
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54 if (argtype != 'normal') {
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55 print("switch", argtype, "expects a parameter");
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56 quit(1);
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57 }
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58
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59 if (!file) {
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60 print('usage: d8 tpc.js -- filename');
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61 quit(1);
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62 }
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63 includes.push(basedir + 'modules');
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64 compileFile(file, basedir, includes, debugmode, backend);
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67 function parseFile(filename)
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68 {
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69 debugprint('//parsing', filename);
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70 var text = read(filename);
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71 try {
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72 var parsed = parser.parse(text);
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73 } catch (error) {
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74 print('SyntaxError on at', error.line, ',', error.column, ':', error.message);
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75 var lines = text.split('\n');
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76 print(lines[error.line-1]);
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77 var spacer = '';
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78 for (var i = 1; i < error.column; i++) {
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79 if (lines[error.line-1].charAt(i-1) == '\t') {
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80 spacer += ' ';
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81 } else {
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82 spacer += ' ';
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83 }
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84 }
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85 print(spacer + '^');
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86 quit(1);
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87 }
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88 return parsed;
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89 }
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91
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92 function compileFile(filename, basedir, includes, debugmode, backend)
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93 {
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94 load(basedir + 'mquery.js');
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95 load(basedir + 'peg.js');
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96 PEG = module.exports;
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97 load(basedir + 'parser.js');
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98 load(basedir + 'compiler.js');
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99 load(basedir + 'interp.js');
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100 if (backend == 'C') {
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101 load(basedir + 'cbackend.js');
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102 } else if (backend == 'IL') {
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103 load(basedir + 'ilbackend.js');
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104 } else {
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105 load(basedir + 'jsbackend.js');
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106 }
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107
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108 var parsed = parseFile(filename);
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109 if (debugmode) {
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110 debugprint = print;
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111 }
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112 parsed = parsed.macroexpand(new topenv(includes));
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113 if (macroonly) {
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114 print(''+parsed);
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115 } else {
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116 toplevel = new topsymbols(includes);
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117 switch(backend)
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118 {
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119 case 'C':
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120 var c = parsed.toCModule();
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121 break;
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122 case 'IL':
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123 var c = parsed.toILModule();
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124 case 'JS':
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125 var c = makeJSProg(parsed);
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126 break;
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127 default:
2dac67e9d18b Add -m flag to compiler driver to select macro expansion only
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128 print('Backend', backend, ' not recognized');
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129 quit(1);
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130 }
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131 print(c);
90
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132 }
36
3b0503a67165 Add scripts for building programs via C using d8 rather than a browser
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parents:
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133 }