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comparison tpc.js @ 50:3e8d2a91102c

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Improve tpc.js compiler driver with some nice swithc handling and fix a small bug in syntax error reporting.
author Mike Pavone <pavone@retrodev.com>
date Fri, 13 Jul 2012 17:03:59 -0700
parents 2a9c6eed0c70
children 976a0924e1d4
comparison
equal deleted inserted replaced
49:f2cda2e6f70e 50:3e8d2a91102c
1 var module = {exports: {}}; 1 var module = {exports: {}};
2 var PEG; 2 var PEG;
3 3
4 if (arguments.length < 1) { 4 var file = null;
5 print('usage: d8 tpc.js -- filename'); 5 var argtype = 'normal';
6 os.exit(); 6 var includes = [];
7 } else { 7 var basedir = '';
8 compileFile(arguments[0]); 8 for (var i = 0; i < arguments.length; i++) {
9 switch (argtype) {
10 case 'normal':
11 switch (arguments[i]) {
12 case '-basedir':
13 case '-i':
14 argtype = arguments[i];
15 break;
16 default:
17 if (arguments[i].charAt(0) == '-') {
18 print("unrecognized switch", arguments[i]);
19 quit(1);
20 }
21 file = arguments[i];
22 }
23 break;
24 case '-basedir':
25 if (basedir == '') {
26 basedir = arguments[i];
27 argtype = 'normal';
28 } else {
29 print("only one -basedir option allowed");
30 quit(1);
31 }
32 break;
33 case '-i':
34 includes.push(arguments[i]);
35 argtype = 'normal';
36 break;
37 }
38 }
39 if (argtype != 'normal') {
40 print("switch", argtype, "expects a parameter");
41 quit(1);
9 } 42 }
10 43
11 function compileFile(filename) 44 if (!file) {
45 print('usage: d8 tpc.js -- filename');
46 quit(1);
47 }
48
49 compileFile(file, basedir, includes);
50
51
52 function compileFile(filename, basedir, includes)
12 { 53 {
13 var text = read(filename); 54 var text = read(filename);
14 load('peg.js'); 55 load(basedir + 'peg.js');
15 PEG = module.exports; 56 PEG = module.exports;
16 load('parser.js'); 57 load(basedir + 'parser.js');
17 load('compiler.js'); 58 load(basedir + 'compiler.js');
18 load('cbackend.js'); 59 load(basedir + 'cbackend.js');
19 try { 60 try {
20 var parsed = parser.parse(text); 61 var parsed = parser.parse(text);
21 } catch (e) { 62 } catch (error) {
22 print('SyntaxError on at', error.line, ',', error.column, ':', error.message); 63 print('SyntaxError on at', error.line, ',', error.column, ':', error.message);
23 var lines = text.split('\n'); 64 var lines = text.split('\n');
24 print(lines[error.line-1]); 65 print(lines[error.line-1]);
25 var spacer = ''; 66 var spacer = '';
26 for (var i = 1; i < error.column; i++) { 67 for (var i = 1; i < error.column; i++) {
29 } else { 70 } else {
30 spacer += ' '; 71 spacer += ' ';
31 } 72 }
32 } 73 }
33 print(spacer + '^'); 74 print(spacer + '^');
34 exit(1); 75 quit(1);
35 } 76 }
36 var c = parsed.toCModule(); 77 var c = parsed.toCModule();
37 print(c); 78 print(c);
38 } 79 }