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amberc.js 15 KB

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  1. #!/usr/bin/env node
  2. // This is a "compiler" for Amber code. Run without arguments for help.
  3. var path = require('path'),
  4. util = require('util'),
  5. fs = require('fs'),
  6. exec = require('child_process').exec;
  7. function map(array, filter, callback) {
  8. var counter = array.length;
  9. var new_array = [];
  10. array.forEach(function (item, index) {
  11. filter(item, function (err, result) {
  12. if (err) { callback(err); return; }
  13. new_array[index] = result;
  14. counter--;
  15. if (counter === 0) {
  16. callback(null, new_array);
  17. }
  18. });
  19. });
  20. }
  21. function Combo(callback) {
  22. this.callback = callback;
  23. this.items = 0;
  24. this.results = [];
  25. }
  26. Combo.prototype = {
  27. add: function () {
  28. var self = this,
  29. id = this.items;
  30. this.items++;
  31. return function () {
  32. self.check(id, arguments);
  33. };
  34. },
  35. check: function (id, arguments) {
  36. this.results[id] = Array.prototype.slice.call(arguments);
  37. this.items--;
  38. if (this.items == 0) {
  39. this.callback.apply(this, this.results);
  40. }
  41. }
  42. };
  43. console.time('Compile Time');
  44. var defaults = function() {
  45. // Get Amber root directory from the location of this script so that
  46. // we can find the st and js directories etc.
  47. var amber_dir = path.join(path.dirname(process.argv[1]), '..');
  48. amber_dir = path.normalize(amber_dir);
  49. var kernel_libraries = ['boot', 'Kernel-Objects', 'Kernel-Classes', 'Kernel-Methods', 'Kernel-Collections', 'Kernel-Exceptions', 'Kernel-Transcript', 'Kernel-Announcements'];
  50. var compiler_libs = ['parser', 'Compiler', 'Compiler-Exceptions'];//, 'Compiler-Core', 'Compiler-AST', 'Compiler-IR', 'Compiler-Inlining', 'Compiler-Semantic'];
  51. return {
  52. 'amber_dir': amber_dir,
  53. 'smalltalk': {}, // the evaluated compiler will be stored in this variable (see create_compiler)
  54. 'compiler_libraries': kernel_libraries.concat(compiler_libs),
  55. 'init': path.join(amber_dir, 'js', 'init.js'),
  56. 'main': undefined,
  57. 'mainfile': undefined,
  58. 'base': kernel_libraries,
  59. 'load': [],
  60. 'closure': false,
  61. 'closure_parts': false,
  62. 'closure_full': false,
  63. 'closure_options': '',
  64. 'closure_jar': path.resolve(path.join(process.env['HOME'], 'compiler.jar')),
  65. 'suffix': '',
  66. 'loadsuffix': '',
  67. 'suffix_used': '',
  68. 'deploy': false,
  69. 'libraries': [],
  70. 'compile': [],
  71. 'compiled_categories': [],
  72. 'compiled': [],
  73. 'program': undefined
  74. };
  75. }();
  76. if (3 > process.argv.length) {
  77. usage();
  78. } else {
  79. handle_options(process.argv.slice(2));
  80. }
  81. function handle_options(optionsArray) {
  82. var nonOptions = [];
  83. var currentItem = optionsArray.shift();
  84. while(undefined !== currentItem) {
  85. switch(currentItem) {
  86. case '-l':
  87. defaults.load.push.apply(defaults.load, optionsArray.shift().split(','));
  88. break;
  89. case '-i':
  90. defaults.init = optionsArray.shift();
  91. break;
  92. case '-m':
  93. defaults.main = optionsArray.shift();
  94. break;
  95. case '-M':
  96. defaults.mainfile = optionsArray.shift();
  97. break;
  98. case '-o':
  99. defaults.closure = true;
  100. defaults.closure_parts = true;
  101. break;
  102. case '-O':
  103. defaults.closure = true;
  104. defaults.closure_full = true;
  105. break;
  106. case '-A':
  107. defaults.closure = true;
  108. defaults.closure_options = defaults.closure_options + ' --compilation_level ADVANCED_OPTIMIZATIONS';
  109. defaults.closure_full = true;
  110. break;
  111. case '-d':
  112. defaults.deploy = true;
  113. break;
  114. case '-s':
  115. defaults.suffix = optionsArray.shift();
  116. defaults.suffix_used = defaults.suffix;
  117. break;
  118. case '-S':
  119. defaults.loadsuffix = optionsArray.shift();
  120. defaults.suffix_used = defaults.suffix;
  121. break;
  122. case '-h':
  123. case '--help':
  124. case '?':
  125. usage();
  126. break;
  127. default:
  128. nonOptions.push(currentItem);
  129. };
  130. currentItem = optionsArray.shift();
  131. }
  132. check_for_closure_compiler(function() {
  133. collect_files(nonOptions);
  134. });
  135. }
  136. // print options and exit
  137. function usage() {
  138. console.log('Usage: $0 [-l lib1,lib2...] [-i init_file] [-m main_class] [-M main_file]');
  139. console.log(' [-o] [-O|-A] [-d] [-s suffix] [-S suffix] [file1 [file2 ...]] [Program]');
  140. console.log('');
  141. console.log(' amberc compiles Amber files - either separately or into a complete runnable');
  142. console.log(' program. If no .st files are listed only a linking stage is performed.');
  143. console.log(' Files listed will be handled using the following rules:');
  144. console.log('');
  145. console.log(' *.js');
  146. console.log(' Files are linked (concatenated) in listed order.');
  147. console.log(' If not found we look in $AMBER/js/');
  148. console.log('');
  149. console.log(' *.st');
  150. console.log(' Files are compiled into .js files before concatenation.');
  151. console.log(' If not found we look in $AMBER/st/.');
  152. console.log('');
  153. console.log(' NOTE: Each file is currently considered to be a fileout of a single class');
  154. console.log(' category of the same name as the file!');
  155. console.log('');
  156. console.log(' If no Program is specified each given .st file will be compiled into');
  157. console.log(' a .js file. Otherwise a <Program>.js file is linked together based on');
  158. console.log(' the options:');
  159. console.log('');
  160. console.log(' -l library1,library2');
  161. console.log(' Additionally add listed JavaScript libraries (no spaces or .js) in listed order.');
  162. console.log('');
  163. console.log(' -i init_file');
  164. console.log(' Add library initializer <init_file> instead of default $AMBER/js/init.js ');
  165. console.log('');
  166. console.log(' -m main_class');
  167. console.log(' Add at end a call to #main in class <main_class>.');
  168. console.log('');
  169. console.log(' -M main_file');
  170. console.log(' Add at end javascript file <main_file> acting as main.');
  171. console.log('');
  172. console.log(' -o');
  173. console.log(' Optimize each .js file using the Google closure compiler.');
  174. console.log(' Using Closure compiler found at ~/compiler.jar');
  175. console.log('');
  176. console.log(' -O');
  177. console.log(' Optimize final <Program>.js using the Google closure compiler.');
  178. console.log(' Using Closure compiler found at ~/compiler.jar');
  179. console.log('');
  180. console.log(' -A Same as -O but use --compilation_level ADVANCED_OPTIMIZATIONS');
  181. console.log('');
  182. console.log(' -d');
  183. console.log(' Additionally export code for deploy - stripped from source etc.');
  184. console.log(' Uses suffix ".deploy.js" in addition to any explicit given suffic using -s.');
  185. console.log('');
  186. console.log(' -s suffix');
  187. console.log(' Add <suffix> to compiled js files so that File.st is compiled into');
  188. console.log(' File.<suffix>.js.');
  189. console.log('');
  190. console.log(' -S suffix');
  191. console.log(' Use <suffix> for all libraries accessed using -L or -l. This makes it possible');
  192. console.log(' to have multiple flavors of Amber and libraries in the same place.');
  193. console.log('');
  194. console.log('');
  195. console.log(' Example invocations:');
  196. console.log('');
  197. console.log(' Just compile Kernel-Objects.st to Kernel-Objects.js:');
  198. console.log('');
  199. console.log(' amberc Kernel-Objects.st');
  200. console.log('');
  201. console.log(' Compile Hello.st to Hello.js and create complete program called');
  202. console.log(' Program.js and adding a call to class method #main in class Hello:');
  203. console.log('');
  204. console.log(' amberc -m Hello Hello.st Program');
  205. console.log('');
  206. console.log(' Compile two .st files into corresponding .js files,');
  207. console.log(' and link with specific myboot.js, myKernel.js, myinit.js');
  208. console.log(' and main.js and create complete program called Program.js:');
  209. console.log('');
  210. console.log(' amberc -M main.js myinit.js myboot.js myKernel.js Cat1.st Cat2.st Program');
  211. process.exit();
  212. }
  213. function check_for_closure_compiler(callback) {
  214. if (defaults.closure) {
  215. exec('which java', function(error, stdout, stderr) {
  216. // stdout contains path to java executable
  217. if (null !== error) {
  218. console.warn('java is not installed and is needed for -O, -A or -o (Closure compiler).');
  219. defaults.closure = false;
  220. defaults.closure_parts = false;
  221. defaults.closure_full = false;
  222. callback();
  223. return;
  224. }
  225. path.exists(defaults.closure_jar, function(exists) {
  226. if (!exists) {
  227. console.warn('Can not find Closure compiler at: ' + defaults.closure_jar);
  228. defaults.closure = false;
  229. defaults.closure_parts = false;
  230. defaults.closure_full = false;
  231. callback();
  232. return;
  233. }
  234. });
  235. });
  236. } else {
  237. callback();
  238. }
  239. }
  240. function resolve_js(filename) {
  241. var jsFile = filename + defaults.loadsuffix + '.js';
  242. var amberJsFile = path.join(defaults.amber_dir, 'js', jsFile);
  243. console.log('Resolving: ' + jsFile);
  244. if (path.existsSync(jsFile)) {
  245. return jsFile;
  246. } else if (path.existsSync(amberJsFile)) {
  247. return amberJsFile;
  248. } else {
  249. throw(new Error('JavaScript file not found: ' + jsFile));
  250. }
  251. }
  252. // --------------------------------------------------
  253. // Collect libraries and Smalltalk files looking
  254. // both locally and in $AMBER/js and $AMBER/st
  255. // --------------------------------------------------
  256. function collect_files(filesArray) {
  257. filesArray.forEach(function(currentFile) {
  258. var fileSuffix = path.extname(currentFile);
  259. var category = path.basename(currentFile, '.st');
  260. var amberFile = path.join(defaults.amber_dir, 'st', currentFile);
  261. switch (fileSuffix) {
  262. case '.st':
  263. if (path.existsSync(currentFile)) {
  264. defaults.compile.push(currentFile);
  265. defaults.compiled_categories.push(category);
  266. defaults.compiled.push(category + defaults.suffix_used + '.js');
  267. } else if (path.existsSync(amberFile)) {
  268. defaults.compile.push(amberFile);
  269. defaults.compiled_categories.push(category);
  270. defaults.compiled.push(category + defaults.suffix_used + '.js');
  271. } else {
  272. throw(new Error('File not found: ' + currentFile));
  273. }
  274. break;
  275. case '.js':
  276. defaults.libraries.push(resolve_js(currentFile));
  277. break;
  278. default:
  279. // Will end up being the last non js/st argument
  280. defaults.program = currentFile
  281. break;
  282. };
  283. });
  284. resolve_libraries();
  285. }
  286. function resolve_libraries() {
  287. // Resolve libraries listed in defaults.base
  288. defaults.base.forEach(function(file) {
  289. defaults.libraries.push(resolve_js(file));
  290. });
  291. // Resolve libraries listed in defaults.compiler
  292. var compilerFiles = [];
  293. defaults.compiler_libraries.forEach(function(file) {
  294. compilerFiles.push(resolve_js(file));
  295. });
  296. // Resolve libraries listed in defaults.load
  297. defaults.load.forEach(function(file) {
  298. var resolvedFile = resolve_js(file);
  299. compilerFiles.push(resolvedFile);
  300. defaults.libraries.push(resolvedFile);
  301. });
  302. // check and add init.js
  303. var initFile = defaults.init;
  304. if ('.js' !== path.extname(initFile)) {
  305. initFile = resolve_js(initFile);
  306. defaults.init = initFile;
  307. }
  308. compilerFiles.push(initFile);
  309. create_compiler(compilerFiles);
  310. }
  311. function create_compiler(compilerFilesArray) {
  312. var compiler_files = new Combo(function() {
  313. var content = '(function() {';
  314. Array.prototype.slice.call(arguments).forEach(function(data) {
  315. // data is an array where index 0 is the error code and index 1 contains the data
  316. content += data[1];
  317. });
  318. content = content + 'return smalltalk;})();';
  319. defaults.smalltalk = eval(content);
  320. console.log('Compiler loaded');
  321. compile();
  322. });
  323. compilerFilesArray.forEach(function(file) {
  324. console.log('Loading file: ' + file);
  325. fs.readFile(file, compiler_files.add());
  326. });
  327. };
  328. function compile() {
  329. console.log('Compiling collected .st files')
  330. // import .st files
  331. var imports = new Combo(function() {
  332. Array.prototype.slice.call(arguments).forEach(function(code) {
  333. // get element 0 of code since all return values are stored inside an array by Combo
  334. defaults.smalltalk.Importer._new()._import_(code[0]._stream());
  335. });
  336. category_export();
  337. });
  338. defaults.compile.forEach(function(stFile) {
  339. if (/\.st/.test(stFile)) {
  340. console.log('Importing: ' + stFile);
  341. fs.readFile(stFile, 'utf8', function(err, data) {
  342. if (!err)
  343. imports.add()(data);
  344. else
  345. throw new Error('Could not import: ' + stFile);
  346. });
  347. }
  348. });
  349. }
  350. function category_export() {
  351. // export categories as .js
  352. map(defaults.compiled_categories, function(category, callback) {
  353. var jsFile = category + defaults.suffix_used + '.js';
  354. var jsFileDeploy = category + defaults.suffix_used + '.deploy.js';
  355. console.log('Exporting ' + (defaults.deploy ? '(debug + deploy)' : '(debug)')
  356. + ' category ' + category + ' as ' + jsFile
  357. + (defaults.deploy ? ' and ' + jsFileDeploy : ''));
  358. fs.writeFile(jsFile, defaults.smalltalk.Exporter._new()._exportPackage_(category), function(err) {
  359. if (defaults.deploy) {
  360. fs.writeFile(jsFileDeploy, defaults.smalltalk.StrippedExporter._new()._exportPackage_(category), callback);
  361. } else {
  362. callback(null, null);
  363. }
  364. });
  365. }, function(err, result){
  366. verify();
  367. });
  368. }
  369. function verify() {
  370. console.log('Verifying if all .st files were compiled');
  371. map(defaults.compiled, function(file, callback) {
  372. path.exists(file, function(exists) {
  373. if (exists)
  374. callback(null, null);
  375. else
  376. throw(new Error('Compilation failed of: ' + file));
  377. });
  378. }, function(err, result) {
  379. if (undefined !== defaults.program) {
  380. compose_js_files();
  381. }
  382. optimize();
  383. });
  384. }
  385. function compose_js_files() {
  386. var program_files = [];
  387. if (undefined !== defaults.libraries) {
  388. console.log('Collecting libraries: ' + defaults.libraries);
  389. program_files.push.apply(program_files, defaults.libraries);
  390. }
  391. if (undefined !== defaults.compiled) {
  392. console.log('Collecting compiled files: ' + defaults.compiled);
  393. program_files.push.apply(program_files, defaults.compiled);
  394. }
  395. if (undefined !== defaults.init) {
  396. console.log('Adding initializer ' + defaults.init);
  397. program_files.push(defaults.init);
  398. }
  399. console.log('Writing program file: %s.js', defaults.program);
  400. var fileStream = fs.createWriteStream(defaults.program + '.js');
  401. fileStream.on('error', function(error) {
  402. console.log(error);
  403. });
  404. program_files.forEach(function(file) {
  405. console.log('Checking : ' + file);
  406. if(path.existsSync(file)) {
  407. fileStream.write(fs.readFileSync(file));
  408. } else {
  409. throw(new Error('Can not find file ' + file));
  410. }
  411. });
  412. if (undefined !== defaults.main) {
  413. console.log('Adding call to: %s>>main', defaults.main);
  414. fileStream.write('smalltalk.' + defaults.main + '._main()');
  415. }
  416. if (undefined !== defaults.mainfile && path.existsSync(defaults.mainfile)) {
  417. console.log('Adding main file: ' + defaults.mainfile);
  418. fileStream.write(fs.readFileSync(defaults.mainfile));
  419. }
  420. fileStream.end();
  421. console.log('Done.');
  422. }
  423. function optimize() {
  424. if (defaults.closure_parts) {
  425. console.log('Compiling all js files using Google closure compiler.');
  426. var allJsFiles = defaults.compiled.concat(defaults.libraries);
  427. allJsFiles.forEach(function(file) {
  428. var minifiedName = path.basename(file, '.js') + '.min.js';
  429. closure_compile(file, minifiedName);
  430. });
  431. }
  432. if (defaults.closure_full) {
  433. console.log('Compiling ' + defaults.program + '.js file using Google closure compiler.');
  434. closure_compile(defaults.program + '.js', defaults.program + '.min.js');
  435. }
  436. console.timeEnd('Compile Time');
  437. }
  438. function closure_compile(sourceFile, minifiedFile) {
  439. // exec is asynchronous
  440. exec(
  441. 'java -jar ' +
  442. defaults.closure_jar + ' ' +
  443. defaults.closure_options +
  444. ' --js '+ sourceFile +
  445. ' --js_output_file '+ minifiedFile,
  446. function (error, stdout, stderr) {
  447. if (error) {
  448. console.log(stderr);
  449. } else {
  450. console.log(stdout);
  451. console.log(' '+ minifiedFile + ' built.');
  452. }
  453. }
  454. );
  455. }