1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
|
'use strict'
const debug = require('debug')('purs-loader')
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 dargs = require('./dargs');
const requireRegex = /require\(['"]\.\.\/([\w\.]+)['"]\)/g
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 || {}
const options = Object.assign({
context: config.context,
psc: 'psc',
pscArgs: {},
pscBundle: 'psc-bundle',
pscBundleArgs: {},
pscIde: false,
pscIdeColors: webpackOptions.psc === 'psa' || query.psc === 'psa',
pscIdeArgs: {},
bundleOutput: 'output/bundle.js',
bundleNamespace: 'PS',
bundle: false,
warnings: true,
output: 'output',
src: [
path.join('src', '**', '*.purs'),
path.join('bower_components', 'purescript-*', 'src', '**', '*.purs')
]
}, webpackOptions, query)
this.cacheable && this.cacheable()
let cache = config.purescriptLoaderCache = config.purescriptLoaderCache || {
rebuild: false,
deferred: [],
bundleModules: []
}
if (!config.purescriptLoaderInstalled) {
config.purescriptLoaderInstalled = true
// 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: [],
bundleModules: [],
ideServer: cache.ideServer,
psModuleMap: cache.psModuleMap
}
})
}
const psModuleName = PsModuleMap.match(source)
const psModule = {
name: psModuleName,
load: js => callback(null, js),
reject: error => callback(error),
srcPath: this.resourcePath,
srcDir: path.dirname(this.resourcePath),
jsPath: path.resolve(path.join(options.output, psModuleName, 'index.js')),
options: options,
cache: cache,
emitWarning: warning => this.emitWarning(warning),
emitError: error => this.emitError(error)
}
debug('loader called', psModule.name)
if (options.bundle) {
cache.bundleModules.push(psModule.name)
}
if (cache.rebuild) {
return PscIde.connect(psModule)
.then(PscIde.rebuild)
.then(toJavaScript)
.then(psModule.load)
.catch(psModule.reject)
}
if (cache.compilationFinished) {
return toJavaScript(psModule).then(psModule.load).catch(psModule.reject)
}
// 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')))
})
}
}
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
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) + '")'
})
.replace(/require\(['"]\.\/foreign['"]\)/g, (m, p1) => {
return 'require("' + jsStringEscape(result.psModuleMap[psModule.name].ffi) + '")'
})
}
return js
})
}
|
