| "use strict"; |
| |
| const beforeBlockString = require("../../utils/beforeBlockString"); |
| const blockString = require("../../utils/blockString"); |
| const hasBlock = require("../../utils/hasBlock"); |
| const hasEmptyBlock = require("../../utils/hasEmptyBlock"); |
| const rawNodeString = require("../../utils/rawNodeString"); |
| const report = require("../../utils/report"); |
| const ruleMessages = require("../../utils/ruleMessages"); |
| const validateOptions = require("../../utils/validateOptions"); |
| const whitespaceChecker = require("../../utils/whitespaceChecker"); |
| |
| const ruleName = "block-opening-brace-newline-after"; |
| |
| const messages = ruleMessages(ruleName, { |
| expectedAfter: () => 'Expected newline after "{"', |
| expectedAfterMultiLine: () => |
| 'Expected newline after "{" of a multi-line block', |
| rejectedAfterMultiLine: () => |
| 'Unexpected whitespace after "{" of a multi-line block' |
| }); |
| |
| const rule = function(expectation, options, context) { |
| 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; |
| } |
| |
| // Check both kinds of statement: rules and at-rules |
| root.walkRules(check); |
| root.walkAtRules(check); |
| |
| function check(statement) { |
| // Return early if blockless or has an empty block |
| if (!hasBlock(statement) || hasEmptyBlock(statement)) { |
| return; |
| } |
| |
| const backupCommentNextBefores = new Map(); |
| |
| // next node with checking newlines after comment |
| function nextNode(startNode) { |
| if (!startNode || !startNode.next) return null; |
| |
| if (startNode.type === "comment") { |
| const reNewLine = /\r?\n/; |
| const newLineMatch = reNewLine.test(startNode.raws.before); |
| |
| const next = startNode.next(); |
| |
| if (next && newLineMatch && !reNewLine.test(next.raws.before)) { |
| backupCommentNextBefores.set(next, next.raws.before); |
| next.raws.before = startNode.raws.before; |
| } |
| |
| return nextNode(next); |
| } |
| |
| return startNode; |
| } |
| |
| // Allow an end-of-line comment |
| const nodeToCheck = nextNode(statement.first); |
| |
| if (!nodeToCheck) { |
| return; |
| } |
| |
| checker.afterOneOnly({ |
| source: rawNodeString(nodeToCheck), |
| index: -1, |
| lineCheckStr: blockString(statement), |
| err: m => { |
| if (context.fix) { |
| if (expectation.indexOf("always") === 0) { |
| const index = nodeToCheck.raws.before.search(/\r?\n/); |
| |
| if (index >= 0) { |
| nodeToCheck.raws.before = nodeToCheck.raws.before.slice(index); |
| } else { |
| nodeToCheck.raws.before = |
| context.newline + nodeToCheck.raws.before; |
| } |
| |
| backupCommentNextBefores.delete(nodeToCheck); |
| |
| return; |
| } else if (expectation === "never-multi-line") { |
| // Restore the `before` of the node next to the comment node. |
| backupCommentNextBefores.forEach((before, node) => { |
| node.raws.before = before; |
| }); |
| backupCommentNextBefores.clear(); |
| |
| // Fix |
| const reNewLine = /\r?\n/; |
| let fixTarget = statement.first; |
| |
| while (fixTarget) { |
| if (reNewLine.test(fixTarget.raws.before)) { |
| fixTarget.raws.before = fixTarget.raws.before.replace( |
| /\r?\n/g, |
| "" |
| ); |
| } |
| |
| if (fixTarget.type !== "comment") { |
| break; |
| } |
| |
| fixTarget = fixTarget.next(); |
| } |
| nodeToCheck.raws.before = ""; |
| |
| return; |
| } |
| } |
| |
| report({ |
| message: m, |
| node: statement, |
| index: |
| beforeBlockString(statement, { noRawBefore: true }).length + 1, |
| result, |
| ruleName |
| }); |
| } |
| }); |
| |
| // Restore the `before` of the node next to the comment node. |
| backupCommentNextBefores.forEach((before, node) => { |
| node.raws.before = before; |
| }); |
| } |
| }; |
| }; |
| |
| rule.ruleName = ruleName; |
| rule.messages = messages; |
| module.exports = rule; |