'use strict'
-const colors = require('chalk')
const debug = require('debug')('purs-loader')
const loaderUtils = require('loader-utils')
-const globby = require('globby')
const Promise = require('bluebird')
const fs = Promise.promisifyAll(require('fs'))
-const spawn = require('child_process').spawn
const path = require('path')
-const retryPromise = require('promise-retry')
+const jsStringEscape = require('js-string-escape')
+const PsModuleMap = require('./PsModuleMap');
+const Psc = require('./Psc');
+const PscIde = require('./PscIde');
+const dargs = require('./dargs');
-const psModuleRegex = /(?:^|\n)module\s+([\w\.]+)/i
const requireRegex = /require\(['"]\.\.\/([\w\.]+)['"]\)/g
module.exports = function purescriptLoader(source, map) {
src: [
path.join('src', '**', '*.purs'),
path.join('bower_components', 'purescript-*', 'src', '**', '*.purs')
- ],
- ffi: [
- path.join('src', '**', '*.js'),
- path.join('bower_components', 'purescript-*', 'src', '**', '*.js')
- ],
+ ]
}, webpackOptions, query)
this.cacheable && this.cacheable()
let cache = config.purescriptLoaderCache = config.purescriptLoaderCache || {
rebuild: false,
deferred: [],
- bundleModules: [],
+ bundleModules: []
}
if (!config.purescriptLoaderInstalled) {
// invalidate loader cache when bundle is marked as invalid (in watch mode)
this._compiler.plugin('invalid', () => {
+ debug('invalidating loader cache');
+
cache = config.purescriptLoaderCache = {
rebuild: options.pscIde,
deferred: [],
- ideServer: cache.ideServer
+ bundleModules: [],
+ ideServer: cache.ideServer,
+ psModuleMap: cache.psModuleMap
}
})
// add psc warnings to webpack compilation warnings
this._compiler.plugin('after-compile', (compilation, callback) => {
- if (options.warnings && cache.warnings && cache.warnings.length) {
- compilation.warnings.unshift(`PureScript compilation:\n${cache.warnings.join('')}`)
+ if (options.warnings && cache.warnings) {
+ compilation.warnings.unshift(`PureScript compilation:\n${cache.warnings}`)
+ cache.warnings = null;
}
- if (cache.errors && cache.errors.length) {
- compilation.errors.unshift(`PureScript compilation:\n${cache.errors.join('\n')}`)
+ if (cache.errors) {
+ compilation.errors.unshift(`PureScript compilation:\n${cache.errors}`)
+ cache.errors = null;
}
callback()
})
}
- const psModuleName = match(psModuleRegex, source)
+ const psModuleName = PsModuleMap.match(source)
const psModule = {
name: psModuleName,
load: js => callback(null, js),
}
if (cache.rebuild) {
- return connectIdeServer(psModule)
- .then(rebuild)
+ return PscIde.connect(psModule)
+ .then(PscIde.rebuild)
.then(toJavaScript)
.then(psModule.load)
.catch(psModule.reject)
cache.deferred.push(psModule)
if (!cache.compilationStarted) {
- return compile(psModule)
+ 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)
}
}
+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;
+ });
+ }
+}
+
// The actual loader is executed *after* purescript compilation.
function toJavaScript(psModule) {
const options = psModule.options
return Promise.props({
js: fs.readFileAsync(jsPath, 'utf8'),
- psModuleMap: psModuleMap(options.src, cache)
+ psModuleMap: updatePsModuleMap(psModule)
}).then(result => {
let js = ''
if (options.bundle) {
// if bundling, return a reference to the bundle
js = 'module.exports = require("'
- + path.relative(psModule.srcDir, options.bundleOutput)
+ + 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.
- const foreignRequire = 'require("' + path.resolve(
- path.join(psModule.options.output, psModule.name, 'foreign.js')
- ) + '")'
-
js = result.js
.replace(requireRegex, (m, p1) => {
- return 'require("' + result.psModuleMap[p1] + '")'
+ return 'require("' + jsStringEscape(result.psModuleMap[p1].src) + '")'
+ })
+ .replace(/require\(['"]\.\/foreign['"]\)/g, (m, p1) => {
+ return 'require("' + jsStringEscape(result.psModuleMap[psModule.name].ffi) + '")'
})
- .replace(/require\(['"]\.\/foreign['"]\)/g, foreignRequire)
}
return js
})
}
-
-function compile(psModule) {
- const options = psModule.options
- const cache = psModule.cache
- const stderr = []
-
- if (cache.compilationStarted) return Promise.resolve(psModule)
-
- cache.compilationStarted = true
-
- const args = dargs(Object.assign({
- _: options.src,
- ffi: options.ffi,
- output: options.output,
- }, options.pscArgs))
-
- debug('spawning compiler %s %o', options.psc, args)
-
- return (new Promise((resolve, reject) => {
- console.log('\nCompiling PureScript...')
-
- const compilation = spawn(options.psc, args)
-
- compilation.stderr.on('data', data => stderr.push(data.toString()))
-
- compilation.on('close', code => {
- console.log('Finished compiling PureScript.')
- cache.compilationFinished = true
- if (code !== 0) {
- cache.compilation = cache.errors = stderr
- reject(true)
- } else {
- cache.compilation = cache.warnings = stderr
- resolve(psModule)
- }
- })
- }))
- .then(compilerOutput => {
- if (options.bundle) {
- return bundle(options, cache).then(() => psModule)
- }
- return psModule
- })
-}
-
-function rebuild(psModule) {
- const options = psModule.options
- const cache = psModule.cache
-
- debug('attempting rebuild with psc-ide-client %s', psModule.srcPath)
-
- const request = (body) => new Promise((resolve, reject) => {
- const args = dargs(options.pscIdeArgs)
- const ideClient = spawn('psc-ide-client', args)
-
- ideClient.stdout.once('data', data => {
- let res = null
-
- try {
- res = JSON.parse(data.toString())
- debug(res)
- } catch (err) {
- return reject(err)
- }
-
- if (res && !Array.isArray(res.result)) {
- return res.resultType === 'success'
- ? resolve(psModule)
- : reject('psc-ide rebuild failed')
- }
-
- Promise.map(res.result, (item, i) => {
- debug(item)
- return formatIdeResult(item, options, i, res.result.length)
- })
- .then(compileMessages => {
- if (res.resultType === 'error') {
- if (res.result.some(item => item.errorCode === 'UnknownModule')) {
- console.log('Unknown module, attempting full recompile')
- return compile(psModule)
- .then(() => request({ command: 'load' }))
- .then(resolve)
- .catch(() => reject('psc-ide rebuild failed'))
- }
- cache.errors = compileMessages
- reject('psc-ide rebuild failed')
- } else {
- cache.warnings = compileMessages
- resolve(psModule)
- }
- })
- })
-
- ideClient.stderr.once('data', data => reject(data.toString()))
-
- ideClient.stdin.write(JSON.stringify(body))
- ideClient.stdin.write('\n')
- })
-
- return request({
- command: 'rebuild',
- params: {
- file: psModule.srcPath,
- }
- })
-}
-
-function formatIdeResult(result, options, index, length) {
- const srcPath = path.relative(options.context, result.filename)
- const pos = result.position
- const fileAndPos = `${srcPath}:${pos.startLine}:${pos.startColumn}`
- let numAndErr = `[${index+1}/${length} ${result.errorCode}]`
- numAndErr = options.pscIdeColors ? colors.yellow(numAndErr) : numAndErr
-
- return fs.readFileAsync(result.filename, 'utf8').then(source => {
- const lines = source.split('\n').slice(pos.startLine - 1, pos.endLine)
- const endsOnNewline = pos.endColumn === 1 && pos.startLine !== pos.endLine
- const up = options.pscIdeColors ? colors.red('^') : '^'
- const down = options.pscIdeColors ? colors.red('v') : 'v'
- let trimmed = lines.slice(0)
-
- if (endsOnNewline) {
- lines.splice(lines.length - 1, 1)
- pos.endLine = pos.endLine - 1
- pos.endColumn = lines[lines.length - 1].length || 1
- }
-
- // strip newlines at the end
- if (endsOnNewline) {
- trimmed = lines.reverse().reduce((trimmed, line, i) => {
- if (i === 0 && line === '') trimmed.trimming = true
- if (!trimmed.trimming) trimmed.push(line)
- if (trimmed.trimming && line !== '') {
- trimmed.trimming = false
- trimmed.push(line)
- }
- return trimmed
- }, []).reverse()
- pos.endLine = pos.endLine - (lines.length - trimmed.length)
- pos.endColumn = trimmed[trimmed.length - 1].length || 1
- }
-
- const spaces = ' '.repeat(String(pos.endLine).length)
- let snippet = trimmed.map((line, i) => {
- return ` ${pos.startLine + i} ${line}`
- }).join('\n')
-
- if (trimmed.length === 1) {
- snippet += `\n ${spaces} ${' '.repeat(pos.startColumn - 1)}${up.repeat(pos.endColumn - pos.startColumn + 1)}`
- } else {
- snippet = ` ${spaces} ${' '.repeat(pos.startColumn - 1)}${down}\n${snippet}`
- snippet += `\n ${spaces} ${' '.repeat(pos.endColumn - 1)}${up}`
- }
-
- return Promise.resolve(
- `\n${numAndErr} ${fileAndPos}\n\n${snippet}\n\n${result.message}`
- )
- })
-}
-
-function bundle(options, cache) {
- if (cache.bundle) return Promise.resolve(cache.bundle)
-
- const stdout = []
- const stderr = cache.bundle = []
-
- const args = dargs(Object.assign({
- _: [path.join(options.output, '*', '*.js')],
- output: options.bundleOutput,
- namespace: options.bundleNamespace,
- }, options.pscBundleArgs))
-
- cache.bundleModules.forEach(name => args.push('--module', name))
-
- debug('spawning bundler %s %o', options.pscBundle, args.join(' '))
-
- return (new Promise((resolve, reject) => {
- console.log('Bundling PureScript...')
-
- const compilation = spawn(options.pscBundle, args)
-
- compilation.stdout.on('data', data => stdout.push(data.toString()))
- compilation.stderr.on('data', data => stderr.push(data.toString()))
- compilation.on('close', code => {
- if (code !== 0) {
- cache.errors.concat(stderr)
- return reject(true)
- }
- cache.bundle = stderr
- resolve(fs.appendFileAsync('output/bundle.js', `module.exports = ${options.bundleNamespace}`))
- })
- }))
-}
-
-// map of PS module names to their source path
-function psModuleMap(globs, cache) {
- if (cache.psModuleMap) return Promise.resolve(cache.psModuleMap)
-
- return globby(globs).then(paths => {
- return Promise
- .props(paths.reduce((map, file) => {
- map[file] = fs.readFileAsync(file, 'utf8')
- return map
- }, {}))
- .then(srcMap => {
- cache.psModuleMap = Object.keys(srcMap).reduce((map, file) => {
- const source = srcMap[file]
- const psModuleName = match(psModuleRegex, source)
- map[psModuleName] = path.resolve(file)
- return map
- }, {})
- return cache.psModuleMap
- })
- })
-}
-
-function connectIdeServer(psModule) {
- const options = psModule.options
- const cache = psModule.cache
-
- if (cache.ideServer) return Promise.resolve(psModule)
-
- cache.ideServer = true
-
- const connect = () => new Promise((resolve, reject) => {
- const args = dargs(options.pscIdeArgs)
-
- debug('attempting to connect to psc-ide-server', args)
-
- const ideClient = spawn('psc-ide-client', args)
-
- ideClient.stderr.on('data', data => {
- debug(data.toString())
- cache.ideServer = false
- reject(true)
- })
- ideClient.stdout.once('data', data => {
- debug(data.toString())
- if (data.toString()[0] === '{') {
- const res = JSON.parse(data.toString())
- if (res.resultType === 'success') {
- cache.ideServer = ideServer
- resolve(psModule)
- } else {
- cache.ideServer = ideServer
- reject(true)
- }
- } else {
- cache.ideServer = false
- reject(true)
- }
- })
- ideClient.stdin.resume()
- ideClient.stdin.write(JSON.stringify({ command: 'load' }))
- ideClient.stdin.write('\n')
- })
-
- const args = dargs(Object.assign({
- outputDirectory: options.output,
- }, options.pscIdeArgs))
-
- debug('attempting to start psc-ide-server', args)
-
- const ideServer = cache.ideServer = spawn('psc-ide-server', [])
- ideServer.stderr.on('data', data => {
- debug(data.toString())
- })
-
- return retryPromise((retry, number) => {
- return connect().catch(error => {
- if (!cache.ideServer && number === 9) {
- debug(error)
-
- console.log(
- 'failed to connect to or start psc-ide-server, ' +
- 'full compilation will occur on rebuild'
- )
-
- return Promise.resolve(psModule)
- }
-
- return retry(error)
- })
- }, {
- retries: 9,
- factor: 1,
- minTimeout: 333,
- maxTimeout: 333,
- })
-}
-
-function match(regex, str) {
- const matches = str.match(regex)
- return matches && matches[1]
-}
-
-function dargs(obj) {
- return Object.keys(obj).reduce((args, key) => {
- const arg = '--' + key.replace(/[A-Z]/g, '-$&').toLowerCase();
- const val = obj[key]
-
- if (key === '_') val.forEach(v => args.push(v))
- else if (Array.isArray(val)) val.forEach(v => args.push(arg, v))
- else args.push(arg, obj[key])
-
- return args
- }, [])
-}