source: trip-planner-front/node_modules/postcss/lib/container.js@ b738035

Last change on this file since b738035 was 6a3a178, checked in by Ema <ema_spirova@…>, 3 years ago

initial commit
  • Property mode set to 100644
File size: 10.0 KB
Line 
1'use strict'
2
3let { isClean, my } = require('./symbols')
4let Declaration = require('./declaration')
5let Comment = require('./comment')
6let Node = require('./node')
7
8let parse, Rule, AtRule
9
10function cleanSource(nodes) {
11 return nodes.map(i => {
12 if (i.nodes) i.nodes = cleanSource(i.nodes)
13 delete i.source
14 return i
15 })
16}
17
18function markDirtyUp(node) {
19 node[isClean] = false
20 if (node.proxyOf.nodes) {
21 for (let i of node.proxyOf.nodes) {
22 markDirtyUp(i)
23 }
24 }
25}
26
27class Container extends Node {
28 push(child) {
29 child.parent = this
30 this.proxyOf.nodes.push(child)
31 return this
32 }
33
34 each(callback) {
35 if (!this.proxyOf.nodes) return undefined
36 let iterator = this.getIterator()
37
38 let index, result
39 while (this.indexes[iterator] < this.proxyOf.nodes.length) {
40 index = this.indexes[iterator]
41 result = callback(this.proxyOf.nodes[index], index)
42 if (result === false) break
43
44 this.indexes[iterator] += 1
45 }
46
47 delete this.indexes[iterator]
48 return result
49 }
50
51 walk(callback) {
52 return this.each((child, i) => {
53 let result
54 try {
55 result = callback(child, i)
56 } catch (e) {
57 throw child.addToError(e)
58 }
59 if (result !== false && child.walk) {
60 result = child.walk(callback)
61 }
62
63 return result
64 })
65 }
66
67 walkDecls(prop, callback) {
68 if (!callback) {
69 callback = prop
70 return this.walk((child, i) => {
71 if (child.type === 'decl') {
72 return callback(child, i)
73 }
74 })
75 }
76 if (prop instanceof RegExp) {
77 return this.walk((child, i) => {
78 if (child.type === 'decl' && prop.test(child.prop)) {
79 return callback(child, i)
80 }
81 })
82 }
83 return this.walk((child, i) => {
84 if (child.type === 'decl' && child.prop === prop) {
85 return callback(child, i)
86 }
87 })
88 }
89
90 walkRules(selector, callback) {
91 if (!callback) {
92 callback = selector
93
94 return this.walk((child, i) => {
95 if (child.type === 'rule') {
96 return callback(child, i)
97 }
98 })
99 }
100 if (selector instanceof RegExp) {
101 return this.walk((child, i) => {
102 if (child.type === 'rule' && selector.test(child.selector)) {
103 return callback(child, i)
104 }
105 })
106 }
107 return this.walk((child, i) => {
108 if (child.type === 'rule' && child.selector === selector) {
109 return callback(child, i)
110 }
111 })
112 }
113
114 walkAtRules(name, callback) {
115 if (!callback) {
116 callback = name
117 return this.walk((child, i) => {
118 if (child.type === 'atrule') {
119 return callback(child, i)
120 }
121 })
122 }
123 if (name instanceof RegExp) {
124 return this.walk((child, i) => {
125 if (child.type === 'atrule' && name.test(child.name)) {
126 return callback(child, i)
127 }
128 })
129 }
130 return this.walk((child, i) => {
131 if (child.type === 'atrule' && child.name === name) {
132 return callback(child, i)
133 }
134 })
135 }
136
137 walkComments(callback) {
138 return this.walk((child, i) => {
139 if (child.type === 'comment') {
140 return callback(child, i)
141 }
142 })
143 }
144
145 append(...children) {
146 for (let child of children) {
147 let nodes = this.normalize(child, this.last)
148 for (let node of nodes) this.proxyOf.nodes.push(node)
149 }
150
151 this.markDirty()
152
153 return this
154 }
155
156 prepend(...children) {
157 children = children.reverse()
158 for (let child of children) {
159 let nodes = this.normalize(child, this.first, 'prepend').reverse()
160 for (let node of nodes) this.proxyOf.nodes.unshift(node)
161 for (let id in this.indexes) {
162 this.indexes[id] = this.indexes[id] + nodes.length
163 }
164 }
165
166 this.markDirty()
167
168 return this
169 }
170
171 cleanRaws(keepBetween) {
172 super.cleanRaws(keepBetween)
173 if (this.nodes) {
174 for (let node of this.nodes) node.cleanRaws(keepBetween)
175 }
176 }
177
178 insertBefore(exist, add) {
179 exist = this.index(exist)
180
181 let type = exist === 0 ? 'prepend' : false
182 let nodes = this.normalize(add, this.proxyOf.nodes[exist], type).reverse()
183 for (let node of nodes) this.proxyOf.nodes.splice(exist, 0, node)
184
185 let index
186 for (let id in this.indexes) {
187 index = this.indexes[id]
188 if (exist <= index) {
189 this.indexes[id] = index + nodes.length
190 }
191 }
192
193 this.markDirty()
194
195 return this
196 }
197
198 insertAfter(exist, add) {
199 exist = this.index(exist)
200
201 let nodes = this.normalize(add, this.proxyOf.nodes[exist]).reverse()
202 for (let node of nodes) this.proxyOf.nodes.splice(exist + 1, 0, node)
203
204 let index
205 for (let id in this.indexes) {
206 index = this.indexes[id]
207 if (exist < index) {
208 this.indexes[id] = index + nodes.length
209 }
210 }
211
212 this.markDirty()
213
214 return this
215 }
216
217 removeChild(child) {
218 child = this.index(child)
219 this.proxyOf.nodes[child].parent = undefined
220 this.proxyOf.nodes.splice(child, 1)
221
222 let index
223 for (let id in this.indexes) {
224 index = this.indexes[id]
225 if (index >= child) {
226 this.indexes[id] = index - 1
227 }
228 }
229
230 this.markDirty()
231
232 return this
233 }
234
235 removeAll() {
236 for (let node of this.proxyOf.nodes) node.parent = undefined
237 this.proxyOf.nodes = []
238
239 this.markDirty()
240
241 return this
242 }
243
244 replaceValues(pattern, opts, callback) {
245 if (!callback) {
246 callback = opts
247 opts = {}
248 }
249
250 this.walkDecls(decl => {
251 if (opts.props && !opts.props.includes(decl.prop)) return
252 if (opts.fast && !decl.value.includes(opts.fast)) return
253
254 decl.value = decl.value.replace(pattern, callback)
255 })
256
257 this.markDirty()
258
259 return this
260 }
261
262 every(condition) {
263 return this.nodes.every(condition)
264 }
265
266 some(condition) {
267 return this.nodes.some(condition)
268 }
269
270 index(child) {
271 if (typeof child === 'number') return child
272 if (child.proxyOf) child = child.proxyOf
273 return this.proxyOf.nodes.indexOf(child)
274 }
275
276 get first() {
277 if (!this.proxyOf.nodes) return undefined
278 return this.proxyOf.nodes[0]
279 }
280
281 get last() {
282 if (!this.proxyOf.nodes) return undefined
283 return this.proxyOf.nodes[this.proxyOf.nodes.length - 1]
284 }
285
286 normalize(nodes, sample) {
287 if (typeof nodes === 'string') {
288 nodes = cleanSource(parse(nodes).nodes)
289 } else if (Array.isArray(nodes)) {
290 nodes = nodes.slice(0)
291 for (let i of nodes) {
292 if (i.parent) i.parent.removeChild(i, 'ignore')
293 }
294 } else if (nodes.type === 'root' && this.type !== 'document') {
295 nodes = nodes.nodes.slice(0)
296 for (let i of nodes) {
297 if (i.parent) i.parent.removeChild(i, 'ignore')
298 }
299 } else if (nodes.type) {
300 nodes = [nodes]
301 } else if (nodes.prop) {
302 if (typeof nodes.value === 'undefined') {
303 throw new Error('Value field is missed in node creation')
304 } else if (typeof nodes.value !== 'string') {
305 nodes.value = String(nodes.value)
306 }
307 nodes = [new Declaration(nodes)]
308 } else if (nodes.selector) {
309 nodes = [new Rule(nodes)]
310 } else if (nodes.name) {
311 nodes = [new AtRule(nodes)]
312 } else if (nodes.text) {
313 nodes = [new Comment(nodes)]
314 } else {
315 throw new Error('Unknown node type in node creation')
316 }
317
318 let processed = nodes.map(i => {
319 // istanbul ignore next
320 if (!i[my]) Container.rebuild(i)
321 i = i.proxyOf
322 if (i.parent) i.parent.removeChild(i)
323 if (i[isClean]) markDirtyUp(i)
324 if (typeof i.raws.before === 'undefined') {
325 if (sample && typeof sample.raws.before !== 'undefined') {
326 i.raws.before = sample.raws.before.replace(/\S/g, '')
327 }
328 }
329 i.parent = this
330 return i
331 })
332
333 return processed
334 }
335
336 getProxyProcessor() {
337 return {
338 set(node, prop, value) {
339 if (node[prop] === value) return true
340 node[prop] = value
341 if (prop === 'name' || prop === 'params' || prop === 'selector') {
342 node.markDirty()
343 }
344 return true
345 },
346
347 get(node, prop) {
348 if (prop === 'proxyOf') {
349 return node
350 } else if (!node[prop]) {
351 return node[prop]
352 } else if (
353 prop === 'each' ||
354 (typeof prop === 'string' && prop.startsWith('walk'))
355 ) {
356 return (...args) => {
357 return node[prop](
358 ...args.map(i => {
359 if (typeof i === 'function') {
360 return (child, index) => i(child.toProxy(), index)
361 } else {
362 return i
363 }
364 })
365 )
366 }
367 } else if (prop === 'every' || prop === 'some') {
368 return cb => {
369 return node[prop]((child, ...other) =>
370 cb(child.toProxy(), ...other)
371 )
372 }
373 } else if (prop === 'root') {
374 return () => node.root().toProxy()
375 } else if (prop === 'nodes') {
376 return node.nodes.map(i => i.toProxy())
377 } else if (prop === 'first' || prop === 'last') {
378 return node[prop].toProxy()
379 } else {
380 return node[prop]
381 }
382 }
383 }
384 }
385
386 getIterator() {
387 if (!this.lastEach) this.lastEach = 0
388 if (!this.indexes) this.indexes = {}
389
390 this.lastEach += 1
391 let iterator = this.lastEach
392 this.indexes[iterator] = 0
393
394 return iterator
395 }
396}
397
398Container.registerParse = dependant => {
399 parse = dependant
400}
401
402Container.registerRule = dependant => {
403 Rule = dependant
404}
405
406Container.registerAtRule = dependant => {
407 AtRule = dependant
408}
409
410module.exports = Container
411Container.default = Container
412
413// istanbul ignore next
414Container.rebuild = node => {
415 if (node.type === 'atrule') {
416 Object.setPrototypeOf(node, AtRule.prototype)
417 } else if (node.type === 'rule') {
418 Object.setPrototypeOf(node, Rule.prototype)
419 } else if (node.type === 'decl') {
420 Object.setPrototypeOf(node, Declaration.prototype)
421 } else if (node.type === 'comment') {
422 Object.setPrototypeOf(node, Comment.prototype)
423 }
424
425 node[my] = true
426
427 if (node.nodes) {
428 node.nodes.forEach(child => {
429 Container.rebuild(child)
430 })
431 }
432}
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