| "use strict"; |
| |
| const beforeBlockString = require("../../utils/beforeBlockString"); |
| const blockString = require("../../utils/blockString"); |
| const hasBlock = require("../../utils/hasBlock"); |
| const hasEmptyBlock = require("../../utils/hasEmptyBlock"); |
| 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-before"; |
| |
| const messages = ruleMessages(ruleName, { |
| expectedBefore: () => 'Expected newline before "{"', |
| expectedBeforeSingleLine: () => |
| 'Expected newline before "{" of a single-line block', |
| rejectedBeforeSingleLine: () => |
| 'Unexpected whitespace before "{" of a single-line block', |
| expectedBeforeMultiLine: () => |
| 'Expected newline before "{" of a multi-line block', |
| rejectedBeforeMultiLine: () => |
| 'Unexpected whitespace before "{" 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-single-line", |
| "never-single-line", |
| "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 source = beforeBlockString(statement); |
| const beforeBraceNoRaw = beforeBlockString(statement, { |
| noRawBefore: true |
| }); |
| |
| let index = beforeBraceNoRaw.length - 1; |
| |
| if (beforeBraceNoRaw[index - 1] === "\r") { |
| index -= 1; |
| } |
| |
| checker.beforeAllowingIndentation({ |
| lineCheckStr: blockString(statement), |
| source, |
| index: source.length, |
| err: m => { |
| if (context.fix) { |
| if (expectation.indexOf("always") === 0) { |
| const spaceIndex = statement.raws.between.search(/\s+$/); |
| |
| if (spaceIndex >= 0) { |
| statement.raws.between = |
| statement.raws.between.slice(0, spaceIndex) + |
| context.newline + |
| statement.raws.between.slice(spaceIndex); |
| } else { |
| statement.raws.between = |
| statement.raws.between + context.newline; |
| } |
| |
| return; |
| } else if (expectation.indexOf("never") === 0) { |
| statement.raws.between = statement.raws.between.replace( |
| /\s*$/, |
| "" |
| ); |
| |
| return; |
| } |
| } |
| |
| report({ |
| message: m, |
| node: statement, |
| index, |
| result, |
| ruleName |
| }); |
| } |
| }); |
| } |
| }; |
| }; |
| |
| rule.ruleName = ruleName; |
| rule.messages = messages; |
| module.exports = rule; |