+++ /dev/null
-"use strict";
-
-const isStandardSyntaxRule = require("../../utils/isStandardSyntaxRule");
-const isStandardSyntaxSelector = require("../../utils/isStandardSyntaxSelector");
-const parseSelector = require("../../utils/parseSelector");
-const report = require("../../utils/report");
-const resolvedNestedSelector = require("postcss-resolve-nested-selector");
-const ruleMessages = require("../../utils/ruleMessages");
-const validateOptions = require("../../utils/validateOptions");
-
-const ruleName = "selector-max-compound-selectors";
-
-const messages = ruleMessages(ruleName, {
- expected: (selector, max) =>
- `Expected "${selector}" to have no more than ${max} compound ${
- max === 1 ? "selector" : "selectors"
- }`
-});
-
-const rule = function(max) {
- return (root, result) => {
- const validOptions = validateOptions(result, ruleName, {
- actual: max,
- possible: [
- function(max) {
- return typeof max === "number" && max > 0;
- }
- ]
- });
- if (!validOptions) {
- return;
- }
-
- // Finds actual selectors in selectorNode object and checks them
- function checkSelector(selectorNode, rule) {
- let compoundCount = 1;
-
- selectorNode.each(childNode => {
- // Only traverse inside actual selectors and :not()
- if (childNode.type === "selector" || childNode.value === ":not") {
- checkSelector(childNode, rule);
- }
-
- // Compound selectors are separated by combinators, so increase count when meeting one
- if (childNode.type === "combinator") {
- compoundCount++;
- }
- });
-
- if (
- selectorNode.type !== "root" &&
- selectorNode.type !== "pseudo" &&
- compoundCount > max
- ) {
- report({
- ruleName,
- result,
- node: rule,
- message: messages.expected(selectorNode, max),
- word: selectorNode
- });
- }
- }
-
- root.walkRules(rule => {
- if (!isStandardSyntaxRule(rule)) {
- return;
- }
- if (!isStandardSyntaxSelector(rule.selector)) {
- return;
- }
-
- // Using `rule.selectors` gets us each selector if there is a comma separated set
- rule.selectors.forEach(selector => {
- resolvedNestedSelector(selector, rule).forEach(resolvedSelector => {
- // Process each resolved selector with `checkSelector` via postcss-selector-parser
- parseSelector(resolvedSelector, result, rule, s =>
- checkSelector(s, rule)
- );
- });
- });
- });
- };
-};
-
-rule.ruleName = ruleName;
-rule.messages = messages;
-module.exports = rule;