'use strict'
-const debug = require('debug')('purs-loader')
+const debug_ = require('debug');
+
+const debug = debug_('purs-loader');
+
+const debugVerbose = debug_('purs-loader:verbose');
+
const loaderUtils = require('loader-utils')
+
const Promise = require('bluebird')
-const fs = Promise.promisifyAll(require('fs'))
+
const path = require('path')
-const jsStringEscape = require('js-string-escape')
-const PsModuleMap = require('./PsModuleMap');
-const Psc = require('./Psc');
-const PscIde = require('./PscIde');
+
+const PsModuleMap = require('./purs-module-map');
+
+const compile = require('./compile');
+
+const bundle = require('./bundle');
+
+const ide = require('./ide');
+
+const toJavaScript = require('./to-javascript');
+
const dargs = require('./dargs');
-const requireRegex = /require\(['"]\.\.\/([\w\.]+)['"]\)/g
+const spawn = require('cross-spawn').sync
+
+const eol = require('os').EOL
module.exports = function purescriptLoader(source, map) {
- const callback = this.async()
- const config = this.options
- const query = loaderUtils.parseQuery(this.query)
- const webpackOptions = this.options.purescriptLoader || {}
+ this.cacheable && this.cacheable();
+
+ const webpackConfig = this.options;
+
+ var cache = webpackConfig.purescriptLoaderCache = webpackConfig.purescriptLoaderCache || {
+ rebuild: false,
+ deferred: [],
+ bundleModules: [],
+ ideServer: null,
+ psModuleMap: null,
+ warnings: [],
+ errors: [],
+ compilationStarted: false,
+ compilationFinished: false,
+ installed: false,
+ srcOption: []
+ };
+
+ const callback = this.async();
+
+ const loaderOptions = loaderUtils.getOptions(this) || {};
+
+ const srcOption = (pscPackage => {
+ const srcPath = path.join('src', '**', '*.purs');
+
+ const bowerPath = path.join('bower_components', 'purescript-*', 'src', '**', '*.purs');
+
+ if (cache.srcOption.length > 0) {
+ return cache.srcOption;
+ }
+ else if (pscPackage) {
+ const pscPackageCommand = 'psc-package';
+
+ const pscPackageArgs = ['sources'];
+
+ const loaderSrc = loaderOptions.src || [
+ srcPath
+ ];
+
+ debug('psc-package %s %o', pscPackageCommand, pscPackageArgs);
+
+ const cmd = spawn(pscPackageCommand, pscPackageArgs);
+
+ if (cmd.status !== 0) {
+ const error = cmd.stdout.toString();
+
+ throw new Error(error);
+ }
+ else {
+ const result = cmd.stdout.toString().split(eol).filter(v => v != '').concat(loaderSrc);
+
+ debug('psc-package result: %o', result);
+
+ cache.srcOption = result;
+
+ return result;
+ }
+ }
+ else {
+ const result = loaderOptions.src || [
+ bowerPath,
+ srcPath
+ ];
+
+ cache.srcOption = result;
+
+ return result;
+ }
+ })(loaderOptions.pscPackage);
const options = Object.assign({
- context: config.context,
- psc: 'psc',
+ context: webpackConfig.context,
+ psc: null,
pscArgs: {},
- pscBundle: 'psc-bundle',
+ pscBundle: null,
pscBundleArgs: {},
pscIde: false,
- pscIdeColors: webpackOptions.psc === 'psa' || query.psc === 'psa',
+ pscIdeColors: loaderOptions.psc === 'psa',
pscIdeArgs: {},
+ pscPackage: false,
bundleOutput: 'output/bundle.js',
bundleNamespace: 'PS',
bundle: false,
warnings: true,
+ watch: false,
output: 'output',
- src: [
- path.join('src', '**', '*.purs'),
- path.join('bower_components', 'purescript-*', 'src', '**', '*.purs')
- ]
- }, webpackOptions, query)
+ src: []
+ }, loaderOptions, {
+ src: srcOption
+ });
- this.cacheable && this.cacheable()
+ if (!cache.installed) {
+ debugVerbose('installing purs-loader with options: %O', options);
- let cache = config.purescriptLoaderCache = config.purescriptLoaderCache || {
- rebuild: false,
- deferred: [],
- bundleModules: []
- }
-
- if (!config.purescriptLoaderInstalled) {
- config.purescriptLoaderInstalled = true
+ cache.installed = true;
// invalidate loader cache when bundle is marked as invalid (in watch mode)
this._compiler.plugin('invalid', () => {
- debug('invalidating loader cache');
+ debugVerbose('invalidating loader cache');
- cache = config.purescriptLoaderCache = {
+ cache = webpackConfig.purescriptLoaderCache = {
rebuild: options.pscIde,
deferred: [],
bundleModules: [],
ideServer: cache.ideServer,
- psModuleMap: cache.psModuleMap
- }
- })
+ psModuleMap: cache.psModuleMap,
+ warnings: [],
+ errors: [],
+ compilationStarted: cache.compilationStarted,
+ compilationFinished: cache.compilationFinished,
+ installed: cache.installed,
+ srcOption: cache.srcOption
+ };
+ });
// add psc warnings to webpack compilation warnings
this._compiler.plugin('after-compile', (compilation, callback) => {
- if (options.warnings && cache.warnings) {
- compilation.warnings.unshift(`PureScript compilation:\n${cache.warnings}`)
- cache.warnings = null;
- }
+ cache.warnings.forEach(warning => {
+ compilation.warnings.push(warning);
+ });
- if (cache.errors) {
- compilation.errors.unshift(`PureScript compilation:\n${cache.errors}`)
- cache.errors = null;
- }
+ cache.errors.forEach(error => {
+ compilation.errors.push(error);
+ });
callback()
- })
+ });
}
- const psModuleName = PsModuleMap.match(source)
+ const psModuleName = PsModuleMap.matchModule(source);
+
const psModule = {
name: psModuleName,
load: js => callback(null, js),
jsPath: path.resolve(path.join(options.output, psModuleName, 'index.js')),
options: options,
cache: cache,
+ emitWarning: warning => {
+ if (options.warnings && warning.length) {
+ cache.warnings.push(warning);
+ }
+ },
+ emitError: error => {
+ if (error.length) {
+ cache.errors.push(error);
+ }
+ }
}
- debug('loader called', psModule.name)
+ debug('loading %s', psModule.name);
if (options.bundle) {
- cache.bundleModules.push(psModule.name)
+ cache.bundleModules.push(psModule.name);
}
if (cache.rebuild) {
- return PscIde.connect(psModule)
- .then(PscIde.rebuild)
+ const connect = () => {
+ if (!cache.ideServer) {
+ cache.ideServer = true;
+
+ return ide.connect(psModule)
+ .then(ideServer => {
+ cache.ideServer = ideServer;
+ return psModule;
+ })
+ .then(ide.loadWithRetry)
+ .catch(error => {
+ if (cache.ideServer.kill) {
+ debug('ide failed to initially load modules, stopping the ide server process');
+
+ cache.ideServer.kill();
+ }
+
+ cache.ideServer = null;
+
+ return Promise.reject(error);
+ })
+ ;
+ }
+ else {
+ return Promise.resolve(psModule);
+ }
+ };
+
+ const rebuild = () =>
+ ide.rebuild(psModule).catch(error => {
+ if (error instanceof ide.UnknownModuleError) {
+ if (!cache.compilationStarted) {
+ cache.compilationStarted = true;
+
+ return compile(psModule)
+ .then(() => {
+ cache.compilationFinished = true;
+ })
+ .then(() =>
+ PsModuleMap.makeMap(options.src).then(map => {
+ debug('rebuilt module map after unknown module forced a recompilation');
+
+ cache.psModuleMap = map;
+ })
+ )
+ .then(() => ide.load(psModule))
+ .then(() => psModule)
+ ;
+ }
+ else {
+ return Promise.resolve(psModule);
+ }
+ }
+ else {
+ debug('ide rebuild failed due to an unhandled error: %o', error);
+
+ return Promise.reject(error);
+ }
+ })
+ ;
+
+ connect()
+ .then(rebuild)
.then(toJavaScript)
.then(psModule.load)
.catch(psModule.reject)
+ ;
}
+ else if (cache.compilationFinished) {
+ debugVerbose('compilation is already finished, loading module %s', psModule.name);
- if (cache.compilationFinished) {
- return toJavaScript(psModule).then(psModule.load).catch(psModule.reject)
+ toJavaScript(psModule)
+ .then(psModule.load)
+ .catch(psModule.reject);
}
+ else {
+ // The compilation has not finished yet. We need to wait for
+ // compilation to finish before the loaders run so that references
+ // to compiled output are valid. Push the modules into the cache to
+ // be loaded once the complation is complete.
- // We need to wait for compilation to finish before the loaders run so that
- // references to compiled output are valid.
- cache.deferred.push(psModule)
-
- if (!cache.compilationStarted) {
- return Psc.compile(psModule)
- .then(() => PsModuleMap.makeMap(options.src).then(map => {
- debug('rebuilt module map');
- cache.psModuleMap = map;
- }))
- .then(() => Promise.map(cache.deferred, psModule => {
- if (typeof cache.ideServer === 'object') cache.ideServer.kill()
- return toJavaScript(psModule).then(psModule.load)
- }))
- .catch(error => {
- cache.deferred[0].reject(error)
- cache.deferred.slice(1).forEach(psModule => psModule.reject(new Error('purs-loader failed')))
- })
- }
-}
+ cache.deferred.push(psModule);
-function updatePsModuleMap(psModule) {
- const options = psModule.options
- const cache = psModule.cache
- const filePurs = psModule.srcPath
- if (!cache.psModuleMap) {
- debug('module mapping does not exist');
- return PsModuleMap.makeMap(options.src).then(map => {
- cache.psModuleMap = map;
- return cache.psModuleMap;
- });
- }
- else {
- return PsModuleMap.makeMapEntry(filePurs).then(result => {
- const map = Object.assign(cache.psModuleMap, result)
- cache.psModuleMap = map;
- return cache.psModuleMap;
- });
- }
-}
+ if (!cache.compilationStarted) {
+ cache.compilationStarted = true;
-// The actual loader is executed *after* purescript compilation.
-function toJavaScript(psModule) {
- const options = psModule.options
- const cache = psModule.cache
- const bundlePath = path.resolve(options.bundleOutput)
- const jsPath = cache.bundle ? bundlePath : psModule.jsPath
-
- debug('loading JavaScript for', psModule.name)
-
- return Promise.props({
- js: fs.readFileAsync(jsPath, 'utf8'),
- psModuleMap: updatePsModuleMap(psModule)
- }).then(result => {
- let js = ''
-
- if (options.bundle) {
- // if bundling, return a reference to the bundle
- js = 'module.exports = require("'
- + jsStringEscape(path.relative(psModule.srcDir, options.bundleOutput))
- + '")["' + psModule.name + '"]'
- } else {
- // replace require paths to output files generated by psc with paths
- // to purescript sources, which are then also run through this loader.
- js = result.js
- .replace(requireRegex, (m, p1) => {
- return 'require("' + jsStringEscape(result.psModuleMap[p1].src) + '")'
+ compile(psModule)
+ .then(() => {
+ cache.compilationFinished = true;
})
- .replace(/require\(['"]\.\/foreign['"]\)/g, (m, p1) => {
- return 'require("' + jsStringEscape(result.psModuleMap[psModule.name].ffi) + '")'
+ .then(() => {
+ if (options.bundle) {
+ return bundle(options, cache.bundleModules);
+ }
})
- }
+ .then(() =>
+ PsModuleMap.makeMap(options.src).then(map => {
+ debug('rebuilt module map after compilation');
+
+ cache.psModuleMap = map;
+ })
+ )
+ .then(() =>
+ Promise.map(cache.deferred, psModule =>
+ toJavaScript(psModule).then(psModule.load)
+ )
+ )
+ .catch(error => {
+ cache.deferred[0].reject(error);
- return js
- })
+ cache.deferred.slice(1).forEach(psModule => {
+ psModule.reject(new Error('purs-loader failed'));
+ })
+ })
+ ;
+ }
+ else {
+ // The complation has started. Nothing to do but wait until it is
+ // done before loading all of the modules.
+ }
+ }
}
projects / github / fretlink / purs-loader.git / blobdiff