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
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
|
'use strict'
const semver = require('semver')
const pkg = require('../package.json')
const constants = require('./constants')
const object = require('./complexValues/object')
const lineBuilder = require('./lineBuilder')
const formatUtils = require('./formatUtils')
const itemDescriptor = require('./metaDescriptors/item')
const propertyDescriptor = require('./metaDescriptors/property')
const stringDescriptor = require('./primitiveValues/string')
const recursorUtils = require('./recursorUtils')
const themeUtils = require('./themeUtils')
const API_VERSION = 1
const CONCORDANCE_VERSION = pkg.version
const descriptorRegistry = new Map()
const registry = new Map()
class PluginError extends Error {
constructor (message, plugin) {
super(message)
this.name = 'PluginError'
this.plugin = plugin
}
}
class PluginTypeError extends TypeError {
constructor (message, plugin) {
super(message)
this.name = 'PluginTypeError'
this.plugin = plugin
}
}
class UnsupportedApiError extends PluginError {
constructor (plugin) {
super('Plugin requires an unsupported API version', plugin)
this.name = 'UnsupportedApiError'
}
}
class UnsupportedError extends PluginError {
constructor (plugin) {
super('Plugin does not support this version of Concordance', plugin)
this.name = 'UnsupportedError'
}
}
class DuplicateDescriptorTagError extends PluginError {
constructor (tag, plugin) {
super(`Could not add descriptor: tag ${String(tag)} has already been registered`, plugin)
this.name = 'DuplicateDescriptorTagError'
this.tag = tag
}
}
class DuplicateDescriptorIdError extends PluginError {
constructor (id, plugin) {
const printed = typeof id === 'number'
? `0x${id.toString(16).toUpperCase()}`
: String(id)
super(`Could not add descriptor: id ${printed} has already been registered`, plugin)
this.name = 'DuplicateDescriptorIdError'
this.id = id
}
}
function verify (plugin) {
if (typeof plugin.name !== 'string' || !plugin.name) {
throw new PluginTypeError('Plugin must have a `name`', plugin)
}
if (plugin.apiVersion !== API_VERSION) {
throw new UnsupportedApiError(plugin)
}
if ('minimalConcordanceVersion' in plugin) {
if (!semver.valid(plugin.minimalConcordanceVersion)) {
throw new PluginTypeError('If specified, `minimalConcordanceVersion` must be a valid SemVer version', plugin)
}
const range = `>=${plugin.minimalConcordanceVersion}`
if (!semver.satisfies(CONCORDANCE_VERSION, range)) {
throw new UnsupportedError(plugin)
}
}
}
// Selectively expose descriptor tags.
const publicDescriptorTags = Object.freeze({
complexItem: itemDescriptor.complexTag,
primitiveItem: itemDescriptor.primitiveTag,
primitiveProperty: propertyDescriptor.primitiveTag,
string: stringDescriptor.tag
})
// Don't expose `setDefaultGutter()`.
const publicLineBuilder = Object.freeze({
buffer: lineBuilder.buffer,
first: lineBuilder.first,
last: lineBuilder.last,
line: lineBuilder.line,
single: lineBuilder.single,
actual: Object.freeze({
buffer: lineBuilder.actual.buffer,
first: lineBuilder.actual.first,
last: lineBuilder.actual.last,
line: lineBuilder.actual.line,
single: lineBuilder.actual.single
}),
expected: Object.freeze({
buffer: lineBuilder.expected.buffer,
first: lineBuilder.expected.first,
last: lineBuilder.expected.last,
line: lineBuilder.expected.line,
single: lineBuilder.expected.single
})
})
function modifyTheme (descriptor, modifier) {
themeUtils.addModifier(descriptor, modifier)
return descriptor
}
function add (plugin) {
verify(plugin)
const name = plugin.name
if (registry.has(name)) return registry.get(name)
const id2deserialize = new Map()
const tag2id = new Map()
const addDescriptor = (id, tag, deserialize) => {
if (id2deserialize.has(id)) throw new DuplicateDescriptorIdError(id, plugin)
if (descriptorRegistry.has(tag) || tag2id.has(tag)) throw new DuplicateDescriptorTagError(tag, plugin)
id2deserialize.set(id, deserialize)
tag2id.set(tag, id)
}
const tryDescribeValue = plugin.register({
// Concordance makes assumptions about when AMBIGUOUS occurs. Do not expose
// it to plugins.
UNEQUAL: constants.UNEQUAL,
SHALLOW_EQUAL: constants.SHALLOW_EQUAL,
DEEP_EQUAL: constants.DEEP_EQUAL,
ObjectValue: object.ObjectValue,
DescribedMixin: object.DescribedMixin,
DeserializedMixin: object.DeserializedMixin,
addDescriptor,
applyThemeModifiers: themeUtils.applyModifiers,
descriptorTags: publicDescriptorTags,
lineBuilder: publicLineBuilder,
mapRecursor: recursorUtils.map,
modifyTheme,
wrapFromTheme: formatUtils.wrap
})
const registered = {
id2deserialize,
serializerVersion: plugin.serializerVersion,
name,
tag2id,
theme: plugin.theme || {},
tryDescribeValue
}
registry.set(name, registered)
for (const tag of tag2id.keys()) {
descriptorRegistry.set(tag, registered)
}
return registered
}
exports.add = add
function getDeserializers (plugins) {
return plugins.map(plugin => {
const registered = add(plugin)
return {
id2deserialize: registered.id2deserialize,
name: registered.name,
serializerVersion: registered.serializerVersion
}
})
}
exports.getDeserializers = getDeserializers
function getThemes (plugins) {
return plugins.map(plugin => {
const registered = add(plugin)
return {
name: registered.name,
theme: registered.theme
}
})
}
exports.getThemes = getThemes
function getTryDescribeValues (plugins) {
return plugins.map(plugin => add(plugin).tryDescribeValue)
}
exports.getTryDescribeValues = getTryDescribeValues
function resolveDescriptorRef (tag) {
if (!descriptorRegistry.has(tag)) return null
const registered = descriptorRegistry.get(tag)
return {
id: registered.tag2id.get(tag),
name: registered.name,
serialization: {
serializerVersion: registered.serializerVersion
}
}
}
exports.resolveDescriptorRef = resolveDescriptorRef
|