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annotate tpc.js @ 116:9cf3e0b18ecc

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Add support for selecting operator expressions in the editor
author Mike Pavone <pavone@retrodev.com>
date Mon, 15 Apr 2013 21:14:55 -0700
parents 926b65fe92b4
children 5e34563f90ae
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 PEG;
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3
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4 var file = null;
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5 var argtype = 'normal';
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6 var includes = ['.'];
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7 var basedir = '';
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8 var debugmode = false;
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9 var backend = 'C';
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10 for (var i = 0; i < arguments.length; i++) {
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11 switch (argtype) {
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12 case 'normal':
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13 switch (arguments[i]) {
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14 case '-basedir':
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15 case '-i':
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16 case '-backend':
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17 argtype = arguments[i];
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18 break;
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19 case '-compilerdebug':
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20 debugmode = true;
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21 break;
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22 default:
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23 if (arguments[i].charAt(0) == '-') {
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24 print("unrecognized switch", arguments[i]);
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25 quit(1);
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26 }
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27 file = arguments[i];
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28 }
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29 break;
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30 case '-basedir':
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31 if (basedir == '') {
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32 basedir = arguments[i];
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33 argtype = 'normal';
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34 } else {
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35 print("only one -basedir option allowed");
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36 quit(1);
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37 }
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38 break;
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39 case '-i':
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40 includes.push(arguments[i]);
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41 argtype = 'normal';
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42 break;
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43 case '-backend':
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44 backend = arguments[i];
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45 argtype = 'normal';
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46 break;
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47 }
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48 }
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49 if (argtype != 'normal') {
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50 print("switch", argtype, "expects a parameter");
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51 quit(1);
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52 }
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53
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54 if (!file) {
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55 print('usage: d8 tpc.js -- filename');
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56 quit(1);
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57 }
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58 includes.push(basedir + 'modules');
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59 compileFile(file, basedir, includes, debugmode, backend);
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61
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62 function parseFile(filename)
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63 {
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64 debugprint('//parsing', filename);
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65 var text = read(filename);
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66 try {
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67 var parsed = parser.parse(text);
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68 } catch (error) {
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69 print('SyntaxError on at', error.line, ',', error.column, ':', error.message);
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70 var lines = text.split('\n');
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71 print(lines[error.line-1]);
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72 var spacer = '';
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73 for (var i = 1; i < error.column; i++) {
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74 if (lines[error.line-1].charAt(i-1) == '\t') {
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75 spacer += ' ';
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76 } else {
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77 spacer += ' ';
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78 }
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79 }
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80 print(spacer + '^');
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81 quit(1);
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82 }
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83 return parsed;
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84 }
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86
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87 function compileFile(filename, basedir, includes, debugmode, backend)
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88 {
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89
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90 load(basedir + 'peg.js');
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91 PEG = module.exports;
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92 load(basedir + 'parser.js');
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93 load(basedir + 'compiler.js');
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94 if (backend == 'C') {
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95 load(basedir + 'cbackend.js');
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96 } else {
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97 load(basedir + 'jsbackend.js');
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98 }
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99
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100 var parsed = parseFile(filename);
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101 if (debugmode) {
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102 debugprint = print;
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103 }
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104 toplevel = new topsymbols(includes);
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105 switch(backend)
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106 {
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107 case 'C':
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108 var c = parsed.toCModule();
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109 break;
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110 case 'JS':
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111 var c = makeJSProg(parsed);
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112 break;
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113 default:
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114 print('Backend', backend, ' not recognized');
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115 quit(1);
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116 }
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117 print(c);
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118 }