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
|
'use strict';
var os = require('os');
var cp = require('child_process');
var path = require('path')
var fs = require('fs');
var glob = require('glob');
var lodash = require('lodash');
var chalk = require('chalk');
var lu = require('loader-utils');
var cwd = process.cwd();
var MODULE_RE = /(?:^|\n)module\s+([\w\.]+)/i;
var IMPORT_RE = /^\s*import\s+(?:qualified\s+)?([\w\.]+)/i;
var BOWER_PATTERN = path.join('bower_components', 'purescript-*', 'src');
var PSC_MAKE = 'psc-make';
var OUTPUT = 'output';
var OPTIONS = {
'no-prelude': '--no-prelude',
'no-opts': '--no-opts',
'no-magic-do': '--no-magic-do',
'no-tco': '--no-tco',
'verbose-errors': '--verbose-errors',
'output': '--output'
};
function pattern(root) {
var as = [ BOWER_PATTERN, root ];
return path.join('{' + as.join(',') + '}', '**', '*.purs');
}
function mkOptions(query) {
return lodash.foldl(lodash.keys(query), function(acc, k){
var h = function(v){return acc.concat(query[k] && OPTIONS[k] ? [v] : []);}
if (k === OUTPUT) return h(OPTIONS[k] + '=' + query[k]);
else return h(OPTIONS[k]);
}, []);
}
function mkGraph(files) {
var graph = {};
files.forEach(function(file){
var source = fs.readFileSync(file, {encoding: 'utf-8'});
var result = MODULE_RE.exec(source);
var module = result ? result[1] : null;
var imports =
lodash.foldl(source.split(os.EOL), function(b, a){
var result = IMPORT_RE.exec(a);
if (result) b.push(result[1]);
return b;
}, [])
;
if (module) {
graph[module] = {
file: file,
imports: imports || []
};
}
});
return graph;
}
function findDeps(graph, module) {
function go(acc, module){
var node = graph[module];
var imports = node && node.imports;
if (lodash.isEmpty(imports)) return acc;
else {
var deps =
lodash.map(imports, function(i){
return go(acc.concat(imports), i);
})
;
return lodash.flatten(deps);
}
}
return lodash.unique(go([], module));
}
function loader(source) {
this.cacheable && this.cacheable();
this.clearDependencies();
this.addDependency(this.resourcePath);
var callback = this.async();
var request = lu.getRemainingRequest(this)
var root = path.dirname(path.relative(cwd, request));
var query = lu.parseQuery(this.query);
var opts = mkOptions(query);
var that = this;
glob(pattern(root), function(e, files){
if (e !== null) callback(e);
else {
var cmd = cp.spawn(PSC_MAKE, opts.concat(files));
var graph = mkGraph(files);
cmd.on('close', function(e){
if (e) callback(e);
else {
var result = MODULE_RE.exec(source);
var module = result ? result[1] : '';
var dependencies = findDeps(graph, module);
var indexPath = path.join(query[OUTPUT] || OUTPUT, module, 'index.js');
fs.readFile(indexPath, 'utf-8', function(e, output){
if (e) callback(e);
else {
dependencies.forEach(function(dep){
var module = graph[dep];
if (module) that.addDependency(path.resolve(module.file));
});
callback(null, output);
}
});
}
});
cmd.stdout.on('data', function(stdout){
console.log('Stdout from \'' + chalk.cyan(PSC_MAKE) + '\'\n' + chalk.magenta(stdout));
});
cmd.stderr.on('data', function(stderr){
console.log('Stderr from \'' + chalk.cyan(PSC_MAKE) + '\'\n' + chalk.magenta(stderr));
});
}
});
}
module.exports = loader;
|
