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author | Alex Mingoia <talk@alexmingoia.com> | 2016-05-21 16:53:29 -0700 |
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committer | Alex Mingoia <talk@alexmingoia.com> | 2016-05-21 16:53:29 -0700 |
commit | d34bc169e84d52b28279786ff400daced5fd8b8a (patch) | |
tree | d83eacd9d778b15f2f6b05dabdf733404671d8af /index.js | |
parent | 63ec415a5cd01655b199f5705010788463a2b22a (diff) | |
download | purs-loader-d34bc169e84d52b28279786ff400daced5fd8b8a.tar.gz purs-loader-d34bc169e84d52b28279786ff400daced5fd8b8a.tar.zst purs-loader-d34bc169e84d52b28279786ff400daced5fd8b8a.zip |
Do not check-in transpiled source.
Diffstat (limited to 'index.js')
-rw-r--r-- | index.js | 478 |
1 files changed, 0 insertions, 478 deletions
diff --git a/index.js b/index.js deleted file mode 100644 index 5f41361..0000000 --- a/index.js +++ /dev/null | |||
@@ -1,478 +0,0 @@ | |||
1 | 'use strict'; | ||
2 | |||
3 | var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) { return typeof obj; } : function (obj) { return obj && typeof Symbol === "function" && obj.constructor === Symbol ? "symbol" : typeof obj; }; | ||
4 | |||
5 | var colors = require('chalk'); | ||
6 | var debug = require('debug')('purs-loader'); | ||
7 | var loaderUtils = require('loader-utils'); | ||
8 | var globby = require('globby'); | ||
9 | var Promise = require('bluebird'); | ||
10 | var fs = Promise.promisifyAll(require('fs')); | ||
11 | var spawn = require('child_process').spawn; | ||
12 | var path = require('path'); | ||
13 | var retryPromise = require('promise-retry'); | ||
14 | |||
15 | var psModuleRegex = /(?:^|\n)module\s+([\w\.]+)/i; | ||
16 | var requireRegex = /require\(['"]\.\.\/([\w\.]+)['"]\)/g; | ||
17 | |||
18 | module.exports = function purescriptLoader(source, map) { | ||
19 | var callback = this.async(); | ||
20 | var config = this.options; | ||
21 | var query = loaderUtils.parseQuery(this.query); | ||
22 | var webpackOptions = this.options.purescriptLoader || {}; | ||
23 | |||
24 | var options = Object.assign({ | ||
25 | context: config.context, | ||
26 | psc: 'psc', | ||
27 | pscArgs: {}, | ||
28 | pscBundle: 'psc-bundle', | ||
29 | pscBundleArgs: {}, | ||
30 | pscIde: false, | ||
31 | pscIdeColors: webpackOptions.psc === 'psa' || query.psc === 'psa', | ||
32 | pscIdeArgs: {}, | ||
33 | bundleOutput: 'output/bundle.js', | ||
34 | bundleNamespace: 'PS', | ||
35 | bundle: false, | ||
36 | warnings: true, | ||
37 | output: 'output', | ||
38 | src: [path.join('src', '**', '*.purs'), path.join('bower_components', 'purescript-*', 'src', '**', '*.purs')], | ||
39 | ffi: [path.join('src', '**', '*.js'), path.join('bower_components', 'purescript-*', 'src', '**', '*.js')] | ||
40 | }, webpackOptions, query); | ||
41 | |||
42 | this.cacheable && this.cacheable(); | ||
43 | |||
44 | var cache = config.purescriptLoaderCache = config.purescriptLoaderCache || { | ||
45 | rebuild: false, | ||
46 | deferred: [], | ||
47 | bundleModules: [] | ||
48 | }; | ||
49 | |||
50 | if (!config.purescriptLoaderInstalled) { | ||
51 | config.purescriptLoaderInstalled = true; | ||
52 | |||
53 | // invalidate loader cache when bundle is marked as invalid (in watch mode) | ||
54 | this._compiler.plugin('invalid', function () { | ||
55 | cache = config.purescriptLoaderCache = { | ||
56 | rebuild: options.pscIde, | ||
57 | deferred: [], | ||
58 | ideServer: cache.ideServer | ||
59 | }; | ||
60 | }); | ||
61 | |||
62 | // add psc warnings to webpack compilation warnings | ||
63 | this._compiler.plugin('after-compile', function (compilation, callback) { | ||
64 | if (options.warnings && cache.warnings) { | ||
65 | compilation.warnings.unshift('PureScript compilation:\n' + cache.warnings); | ||
66 | } | ||
67 | |||
68 | if (cache.errors) { | ||
69 | compilation.errors.unshift('PureScript compilation:\n' + cache.errors); | ||
70 | } | ||
71 | |||
72 | callback(); | ||
73 | }); | ||
74 | } | ||
75 | |||
76 | var psModuleName = match(psModuleRegex, source); | ||
77 | var psModule = { | ||
78 | name: psModuleName, | ||
79 | load: function load(js) { | ||
80 | return callback(null, js); | ||
81 | }, | ||
82 | reject: function reject(error) { | ||
83 | return callback(error); | ||
84 | }, | ||
85 | srcPath: this.resourcePath, | ||
86 | srcDir: path.dirname(this.resourcePath), | ||
87 | jsPath: path.resolve(path.join(options.output, psModuleName, 'index.js')), | ||
88 | options: options, | ||
89 | cache: cache | ||
90 | }; | ||
91 | |||
92 | debug('loader called', psModule.name); | ||
93 | |||
94 | if (options.bundle) { | ||
95 | cache.bundleModules.push(psModule.name); | ||
96 | } | ||
97 | |||
98 | if (cache.rebuild) { | ||
99 | return connectIdeServer(psModule).then(rebuild).then(toJavaScript).then(psModule.load).catch(psModule.reject); | ||
100 | } | ||
101 | |||
102 | if (cache.compilationFinished) { | ||
103 | return toJavaScript(psModule).then(psModule.load).catch(psModule.reject); | ||
104 | } | ||
105 | |||
106 | // We need to wait for compilation to finish before the loaders run so that | ||
107 | // references to compiled output are valid. | ||
108 | cache.deferred.push(psModule); | ||
109 | |||
110 | if (!cache.compilationStarted) { | ||
111 | return compile(psModule).then(function () { | ||
112 | return Promise.map(cache.deferred, function (psModule) { | ||
113 | if (_typeof(cache.ideServer) === 'object') cache.ideServer.kill(); | ||
114 | return toJavaScript(psModule).then(psModule.load); | ||
115 | }); | ||
116 | }).catch(function (error) { | ||
117 | cache.deferred[0].reject(error); | ||
118 | cache.deferred.slice(1).forEach(function (psModule) { | ||
119 | return psModule.reject(true); | ||
120 | }); | ||
121 | }); | ||
122 | } | ||
123 | }; | ||
124 | |||
125 | // The actual loader is executed *after* purescript compilation. | ||
126 | function toJavaScript(psModule) { | ||
127 | var options = psModule.options; | ||
128 | var cache = psModule.cache; | ||
129 | var bundlePath = path.resolve(options.bundleOutput); | ||
130 | var jsPath = cache.bundle ? bundlePath : psModule.jsPath; | ||
131 | |||
132 | debug('loading JavaScript for', psModule.name); | ||
133 | |||
134 | return Promise.props({ | ||
135 | js: fs.readFileAsync(jsPath, 'utf8'), | ||
136 | psModuleMap: psModuleMap(options.src, cache) | ||
137 | }).then(function (result) { | ||
138 | var js = ''; | ||
139 | |||
140 | if (options.bundle) { | ||
141 | // if bundling, return a reference to the bundle | ||
142 | js = 'module.exports = require("' + path.relative(psModule.srcDir, options.bundleOutput) + '")["' + psModule.name + '"]'; | ||
143 | } else { | ||
144 | // replace require paths to output files generated by psc with paths | ||
145 | // to purescript sources, which are then also run through this loader. | ||
146 | var foreignRequire = 'require("' + path.resolve(path.join(psModule.options.output, psModule.name, 'foreign.js')) + '")'; | ||
147 | |||
148 | js = result.js.replace(requireRegex, function (m, p1) { | ||
149 | return 'require("' + result.psModuleMap[p1] + '")'; | ||
150 | }).replace(/require\(['"]\.\/foreign['"]\)/g, foreignRequire); | ||
151 | } | ||
152 | |||
153 | return js; | ||
154 | }); | ||
155 | } | ||
156 | |||
157 | function compile(psModule) { | ||
158 | var options = psModule.options; | ||
159 | var cache = psModule.cache; | ||
160 | var stderr = []; | ||
161 | |||
162 | if (cache.compilationStarted) return Promise.resolve(psModule); | ||
163 | |||
164 | cache.compilationStarted = true; | ||
165 | |||
166 | var args = dargs(Object.assign({ | ||
167 | _: options.src, | ||
168 | ffi: options.ffi, | ||
169 | output: options.output | ||
170 | }, options.pscArgs)); | ||
171 | |||
172 | debug('spawning compiler %s %o', options.psc, args); | ||
173 | |||
174 | return new Promise(function (resolve, reject) { | ||
175 | console.log('\nCompiling PureScript...'); | ||
176 | |||
177 | var compilation = spawn(options.psc, args); | ||
178 | |||
179 | compilation.stdout.on('data', function (data) { | ||
180 | return stderr.push(data.toString()); | ||
181 | }); | ||
182 | compilation.stderr.on('data', function (data) { | ||
183 | return stderr.push(data.toString()); | ||
184 | }); | ||
185 | |||
186 | compilation.on('close', function (code) { | ||
187 | console.log('Finished compiling PureScript.'); | ||
188 | cache.compilationFinished = true; | ||
189 | if (code !== 0) { | ||
190 | cache.errors = stderr.join(''); | ||
191 | reject(true); | ||
192 | } else { | ||
193 | cache.warnings = stderr.join(''); | ||
194 | resolve(psModule); | ||
195 | } | ||
196 | }); | ||
197 | }).then(function (compilerOutput) { | ||
198 | if (options.bundle) { | ||
199 | return bundle(options, cache).then(function () { | ||
200 | return psModule; | ||
201 | }); | ||
202 | } | ||
203 | return psModule; | ||
204 | }); | ||
205 | } | ||
206 | |||
207 | function rebuild(psModule) { | ||
208 | var options = psModule.options; | ||
209 | var cache = psModule.cache; | ||
210 | |||
211 | debug('attempting rebuild with psc-ide-client %s', psModule.srcPath); | ||
212 | |||
213 | var request = function request(body) { | ||
214 | return new Promise(function (resolve, reject) { | ||
215 | var args = dargs(options.pscIdeArgs); | ||
216 | var ideClient = spawn('psc-ide-client', args); | ||
217 | |||
218 | ideClient.stdout.once('data', function (data) { | ||
219 | var res = null; | ||
220 | |||
221 | try { | ||
222 | res = JSON.parse(data.toString()); | ||
223 | debug(res); | ||
224 | } catch (err) { | ||
225 | return reject(err); | ||
226 | } | ||
227 | |||
228 | if (res && !Array.isArray(res.result)) { | ||
229 | return res.resultType === 'success' ? resolve(psModule) : reject('psc-ide rebuild failed'); | ||
230 | } | ||
231 | |||
232 | Promise.map(res.result, function (item, i) { | ||
233 | debug(item); | ||
234 | return formatIdeResult(item, options, i, res.result.length); | ||
235 | }).then(function (compileMessages) { | ||
236 | if (res.resultType === 'error') { | ||
237 | if (res.result.some(function (item) { | ||
238 | return item.errorCode === 'UnknownModule'; | ||
239 | })) { | ||
240 | console.log('Unknown module, attempting full recompile'); | ||
241 | return compile(psModule).then(function () { | ||
242 | return request({ command: 'load' }); | ||
243 | }).then(resolve).catch(function () { | ||
244 | return reject('psc-ide rebuild failed'); | ||
245 | }); | ||
246 | } | ||
247 | cache.errors = compileMessages.join('\n'); | ||
248 | reject('psc-ide rebuild failed'); | ||
249 | } else { | ||
250 | cache.warnings = compileMessages.join('\n'); | ||
251 | resolve(psModule); | ||
252 | } | ||
253 | }); | ||
254 | }); | ||
255 | |||
256 | ideClient.stderr.once('data', function (data) { | ||
257 | return reject(data.toString()); | ||
258 | }); | ||
259 | |||
260 | ideClient.stdin.write(JSON.stringify(body)); | ||
261 | ideClient.stdin.write('\n'); | ||
262 | }); | ||
263 | }; | ||
264 | |||
265 | return request({ | ||
266 | command: 'rebuild', | ||
267 | params: { | ||
268 | file: psModule.srcPath | ||
269 | } | ||
270 | }); | ||
271 | } | ||
272 | |||
273 | function formatIdeResult(result, options, index, length) { | ||
274 | var srcPath = path.relative(options.context, result.filename); | ||
275 | var pos = result.position; | ||
276 | var fileAndPos = srcPath + ':' + pos.startLine + ':' + pos.startColumn; | ||
277 | var numAndErr = '[' + (index + 1) + '/' + length + ' ' + result.errorCode + ']'; | ||
278 | numAndErr = options.pscIdeColors ? colors.yellow(numAndErr) : numAndErr; | ||
279 | |||
280 | return fs.readFileAsync(result.filename, 'utf8').then(function (source) { | ||
281 | var lines = source.split('\n').slice(pos.startLine - 1, pos.endLine); | ||
282 | var endsOnNewline = pos.endColumn === 1 && pos.startLine !== pos.endLine; | ||
283 | var up = options.pscIdeColors ? colors.red('^') : '^'; | ||
284 | var down = options.pscIdeColors ? colors.red('v') : 'v'; | ||
285 | var trimmed = lines.slice(0); | ||
286 | |||
287 | if (endsOnNewline) { | ||
288 | lines.splice(lines.length - 1, 1); | ||
289 | pos.endLine = pos.endLine - 1; | ||
290 | pos.endColumn = lines[lines.length - 1].length || 1; | ||
291 | } | ||
292 | |||
293 | // strip newlines at the end | ||
294 | if (endsOnNewline) { | ||
295 | trimmed = lines.reverse().reduce(function (trimmed, line, i) { | ||
296 | if (i === 0 && line === '') trimmed.trimming = true; | ||
297 | if (!trimmed.trimming) trimmed.push(line); | ||
298 | if (trimmed.trimming && line !== '') { | ||
299 | trimmed.trimming = false; | ||
300 | trimmed.push(line); | ||
301 | } | ||
302 | return trimmed; | ||
303 | }, []).reverse(); | ||
304 | pos.endLine = pos.endLine - (lines.length - trimmed.length); | ||
305 | pos.endColumn = trimmed[trimmed.length - 1].length || 1; | ||
306 | } | ||
307 | |||
308 | var spaces = ' '.repeat(String(pos.endLine).length); | ||
309 | var snippet = trimmed.map(function (line, i) { | ||
310 | return ' ' + (pos.startLine + i) + ' ' + line; | ||
311 | }).join('\n'); | ||
312 | |||
313 | if (trimmed.length === 1) { | ||
314 | snippet += '\n ' + spaces + ' ' + ' '.repeat(pos.startColumn - 1) + up.repeat(pos.endColumn - pos.startColumn + 1); | ||
315 | } else { | ||
316 | snippet = ' ' + spaces + ' ' + ' '.repeat(pos.startColumn - 1) + down + '\n' + snippet; | ||
317 | snippet += '\n ' + spaces + ' ' + ' '.repeat(pos.endColumn - 1) + up; | ||
318 | } | ||
319 | |||
320 | return Promise.resolve('\n' + numAndErr + ' ' + fileAndPos + '\n\n' + snippet + '\n\n' + result.message); | ||
321 | }); | ||
322 | } | ||
323 | |||
324 | function bundle(options, cache) { | ||
325 | if (cache.bundle) return Promise.resolve(cache.bundle); | ||
326 | |||
327 | var stdout = []; | ||
328 | var stderr = cache.bundle = []; | ||
329 | |||
330 | var args = dargs(Object.assign({ | ||
331 | _: [path.join(options.output, '*', '*.js')], | ||
332 | output: options.bundleOutput, | ||
333 | namespace: options.bundleNamespace | ||
334 | }, options.pscBundleArgs)); | ||
335 | |||
336 | cache.bundleModules.forEach(function (name) { | ||
337 | return args.push('--module', name); | ||
338 | }); | ||
339 | |||
340 | debug('spawning bundler %s %o', options.pscBundle, args.join(' ')); | ||
341 | |||
342 | return new Promise(function (resolve, reject) { | ||
343 | console.log('Bundling PureScript...'); | ||
344 | |||
345 | var compilation = spawn(options.pscBundle, args); | ||
346 | |||
347 | compilation.stdout.on('data', function (data) { | ||
348 | return stdout.push(data.toString()); | ||
349 | }); | ||
350 | compilation.stderr.on('data', function (data) { | ||
351 | return stderr.push(data.toString()); | ||
352 | }); | ||
353 | compilation.on('close', function (code) { | ||
354 | if (code !== 0) { | ||
355 | cache.errors = (cache.errors || '') + stderr.join(''); | ||
356 | return reject(true); | ||
357 | } | ||
358 | cache.bundle = stderr; | ||
359 | resolve(fs.appendFileAsync('output/bundle.js', 'module.exports = ' + options.bundleNamespace)); | ||
360 | }); | ||
361 | }); | ||
362 | } | ||
363 | |||
364 | // map of PS module names to their source path | ||
365 | function psModuleMap(globs, cache) { | ||
366 | if (cache.psModuleMap) return Promise.resolve(cache.psModuleMap); | ||
367 | |||
368 | return globby(globs).then(function (paths) { | ||
369 | return Promise.props(paths.reduce(function (map, file) { | ||
370 | map[file] = fs.readFileAsync(file, 'utf8'); | ||
371 | return map; | ||
372 | }, {})).then(function (srcMap) { | ||
373 | cache.psModuleMap = Object.keys(srcMap).reduce(function (map, file) { | ||
374 | var source = srcMap[file]; | ||
375 | var psModuleName = match(psModuleRegex, source); | ||
376 | map[psModuleName] = path.resolve(file); | ||
377 | return map; | ||
378 | }, {}); | ||
379 | return cache.psModuleMap; | ||
380 | }); | ||
381 | }); | ||
382 | } | ||
383 | |||
384 | function connectIdeServer(psModule) { | ||
385 | var options = psModule.options; | ||
386 | var cache = psModule.cache; | ||
387 | |||
388 | if (cache.ideServer) return Promise.resolve(psModule); | ||
389 | |||
390 | cache.ideServer = true; | ||
391 | |||
392 | var connect = function connect() { | ||
393 | return new Promise(function (resolve, reject) { | ||
394 | var args = dargs(options.pscIdeArgs); | ||
395 | |||
396 | debug('attempting to connect to psc-ide-server', args); | ||
397 | |||
398 | var ideClient = spawn('psc-ide-client', args); | ||
399 | |||
400 | ideClient.stderr.on('data', function (data) { | ||
401 | debug(data.toString()); | ||
402 | cache.ideServer = false; | ||
403 | reject(true); | ||
404 | }); | ||
405 | ideClient.stdout.once('data', function (data) { | ||
406 | debug(data.toString()); | ||
407 | if (data.toString()[0] === '{') { | ||
408 | var res = JSON.parse(data.toString()); | ||
409 | if (res.resultType === 'success') { | ||
410 | cache.ideServer = ideServer; | ||
411 | resolve(psModule); | ||
412 | } else { | ||
413 | cache.ideServer = ideServer; | ||
414 | reject(true); | ||
415 | } | ||
416 | } else { | ||
417 | cache.ideServer = false; | ||
418 | reject(true); | ||
419 | } | ||
420 | }); | ||
421 | ideClient.stdin.resume(); | ||
422 | ideClient.stdin.write(JSON.stringify({ command: 'load' })); | ||
423 | ideClient.stdin.write('\n'); | ||
424 | }); | ||
425 | }; | ||
426 | |||
427 | var args = dargs(Object.assign({ | ||
428 | outputDirectory: options.output | ||
429 | }, options.pscIdeArgs)); | ||
430 | |||
431 | debug('attempting to start psc-ide-server', args); | ||
432 | |||
433 | var ideServer = cache.ideServer = spawn('psc-ide-server', []); | ||
434 | ideServer.stderr.on('data', function (data) { | ||
435 | debug(data.toString()); | ||
436 | }); | ||
437 | |||
438 | return retryPromise(function (retry, number) { | ||
439 | return connect().catch(function (error) { | ||
440 | if (!cache.ideServer && number === 9) { | ||
441 | debug(error); | ||
442 | |||
443 | console.log('failed to connect to or start psc-ide-server, ' + 'full compilation will occur on rebuild'); | ||
444 | |||
445 | return Promise.resolve(psModule); | ||
446 | } | ||
447 | |||
448 | return retry(error); | ||
449 | }); | ||
450 | }, { | ||
451 | retries: 9, | ||
452 | factor: 1, | ||
453 | minTimeout: 333, | ||
454 | maxTimeout: 333 | ||
455 | }); | ||
456 | } | ||
457 | |||
458 | function match(regex, str) { | ||
459 | var matches = str.match(regex); | ||
460 | return matches && matches[1]; | ||
461 | } | ||
462 | |||
463 | function dargs(obj) { | ||
464 | return Object.keys(obj).reduce(function (args, key) { | ||
465 | var arg = '--' + key.replace(/[A-Z]/g, '-$&').toLowerCase(); | ||
466 | var val = obj[key]; | ||
467 | |||
468 | if (key === '_') val.forEach(function (v) { | ||
469 | return args.push(v); | ||
470 | });else if (Array.isArray(val)) val.forEach(function (v) { | ||
471 | return args.push(arg, v); | ||
472 | });else args.push(arg, obj[key]); | ||
473 | |||
474 | return args.filter(function (arg) { | ||
475 | return typeof arg !== 'boolean'; | ||
476 | }); | ||
477 | }, []); | ||
478 | } | ||