1 |
|
2 |
|
3 | 'use strict';
|
4 |
|
5 | const _ = require('lodash');
|
6 | const isContextFunctionalPseudoClass = require('../../utils/isContextFunctionalPseudoClass');
|
7 | const isStandardSyntaxRule = require('../../utils/isStandardSyntaxRule');
|
8 | const optionsMatches = require('../../utils/optionsMatches');
|
9 | const parseSelector = require('../../utils/parseSelector');
|
10 | const report = require('../../utils/report');
|
11 | const resolvedNestedSelector = require('postcss-resolve-nested-selector');
|
12 | const ruleMessages = require('../../utils/ruleMessages');
|
13 | const validateOptions = require('../../utils/validateOptions');
|
14 |
|
15 | const ruleName = 'selector-max-attribute';
|
16 |
|
17 | const messages = ruleMessages(ruleName, {
|
18 | expected: (selector, max) =>
|
19 | `Expected "${selector}" to have no more than ${max} attribute ${
|
20 | max === 1 ? 'selector' : 'selectors'
|
21 | }`,
|
22 | });
|
23 |
|
24 | function rule(max, options) {
|
25 | return (root, result) => {
|
26 | const validOptions = validateOptions(
|
27 | result,
|
28 | ruleName,
|
29 | {
|
30 | actual: max,
|
31 | possible: [
|
32 | function (max) {
|
33 | return typeof max === 'number' && max >= 0;
|
34 | },
|
35 | ],
|
36 | },
|
37 | {
|
38 | actual: options,
|
39 | possible: {
|
40 | ignoreAttributes: [_.isString, _.isRegExp],
|
41 | },
|
42 | optional: true,
|
43 | },
|
44 | );
|
45 |
|
46 | if (!validOptions) {
|
47 | return;
|
48 | }
|
49 |
|
50 | function checkSelector(selectorNode, ruleNode) {
|
51 | const count = selectorNode.reduce((total, childNode) => {
|
52 |
|
53 | if (childNode.type === 'selector' || isContextFunctionalPseudoClass(childNode)) {
|
54 | checkSelector(childNode, ruleNode);
|
55 | }
|
56 |
|
57 | if (childNode.type !== 'attribute') {
|
58 |
|
59 | return total;
|
60 | }
|
61 |
|
62 | if (optionsMatches(options, 'ignoreAttributes', childNode.attribute)) {
|
63 |
|
64 | return total;
|
65 | }
|
66 |
|
67 | return (total += 1);
|
68 | }, 0);
|
69 |
|
70 | if (selectorNode.type !== 'root' && selectorNode.type !== 'pseudo' && count > max) {
|
71 | report({
|
72 | ruleName,
|
73 | result,
|
74 | node: ruleNode,
|
75 | message: messages.expected(selectorNode, max),
|
76 | word: selectorNode,
|
77 | });
|
78 | }
|
79 | }
|
80 |
|
81 | root.walkRules((ruleNode) => {
|
82 | if (!isStandardSyntaxRule(ruleNode)) {
|
83 | return;
|
84 | }
|
85 |
|
86 | ruleNode.selectors.forEach((selector) => {
|
87 | resolvedNestedSelector(selector, ruleNode).forEach((resolvedSelector) => {
|
88 | parseSelector(resolvedSelector, result, ruleNode, (container) =>
|
89 | checkSelector(container, ruleNode),
|
90 | );
|
91 | });
|
92 | });
|
93 | });
|
94 | };
|
95 | }
|
96 |
|
97 | rule.ruleName = ruleName;
|
98 | rule.messages = messages;
|
99 | module.exports = rule;
|