text: "use strict"
  
  const isStandardSyntaxRule = require("../../utils/isStandardSyntaxRule")
  const report = require("../../utils/report")
  const ruleMessages = require("../../utils/ruleMessages")
  const validateOptions = require("../../utils/validateOptions")
  const whitespaceChecker = require("../../utils/whitespaceChecker")
  const styleSearch = require("style-search")
  
  const ruleName = "selector-list-comma-newline-after"
  
  const messages = ruleMessages(ruleName, {
    expectedAfter: () => "Expected newline after \",\"",
    expectedAfterMultiLine: () => "Expected newline after \",\" in a multi-line list",
    rejectedAfterMultiLine: () => "Unexpected whitespace after \",\" in a multi-line list",
  })
  
  const rule = function (expectation) {
    const checker = whitespaceChecker("newline", expectation, messages)
    return (root, result) => {
      const validOptions = validateOptions(result, ruleName, {
        actual: expectation,
        possible: [
          "always",
          "always-multi-line",
          "never-multi-line",
        ],
      })
      if (!validOptions) {
        return
      }
  
      root.walkRules(rule => {
        if (!isStandardSyntaxRule(rule)) {
          return
        }
        // Get raw selector so we can allow end-of-line comments, e.g.
        // a, /* comment */
        // b {}
        const selector = rule.raws.selector ? rule.raws.selector.raw : rule.selector
        styleSearch({
          source: selector,
          target: ",",
          functionArguments: "skip",
        }, match => {
          const nextThreeChars = selector.substr(match.endIndex, 3)
  
          // If there's a // comment, that means there has to be a newline
          // ending the comment so we're fine
          if (nextThreeChars === " //") {
            return
          }
  
          // If there is a space and then a comment begins, look for the newline
          // after that comment
          const indextoCheckAfter = nextThreeChars === " /*" ? selector.indexOf("*/", match.endIndex) + 1 : match.startIndex
          checker.afterOneOnly({
            source: selector,
            index: indextoCheckAfter,
            err: m => report({
              message: m,
              node: rule,
              index: match.startIndex,
              result,
              ruleName,
            }),
          })
        })
      })
    }
  }
  
  rule.ruleName = ruleName
  rule.messages = messages
  module.exports = rule
  