| "use strict"; |
| |
| const _ = require("lodash"); |
| const blockString = require("../../utils/blockString"); |
| const hasBlock = require("../../utils/hasBlock"); |
| const hasEmptyBlock = require("../../utils/hasEmptyBlock"); |
| const isSingleLineString = require("../../utils/isSingleLineString"); |
| const report = require("../../utils/report"); |
| const ruleMessages = require("../../utils/ruleMessages"); |
| const validateOptions = require("../../utils/validateOptions"); |
| |
| const ruleName = "block-closing-brace-newline-before"; |
| |
| const messages = ruleMessages(ruleName, { |
| expectedBefore: 'Expected newline before "}"', |
| expectedBeforeMultiLine: 'Expected newline before "}" of a multi-line block', |
| rejectedBeforeMultiLine: |
| 'Unexpected whitespace before "}" of a multi-line block' |
| }); |
| |
| const rule = function(expectation, options, context) { |
| 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 statements: rules and at-rules |
| root.walkRules(check); |
| root.walkAtRules(check); |
| |
| function check(statement) { |
| // Return early if blockless or has empty block |
| if (!hasBlock(statement) || hasEmptyBlock(statement)) { |
| return; |
| } |
| |
| // Ignore extra semicolon |
| const after = (statement.raws.after || "").replace(/;+/, ""); |
| |
| if (after === undefined) { |
| return; |
| } |
| |
| const blockIsMultiLine = !isSingleLineString(blockString(statement)); |
| const statementString = statement.toString(); |
| |
| let index = statementString.length - 2; |
| |
| if (statementString[index - 1] === "\r") { |
| index -= 1; |
| } |
| |
| // We're really just checking whether a |
| // newline *starts* the block's final space -- between |
| // the last declaration and the closing brace. We can |
| // ignore any other whitespace between them, because that |
| // will be checked by the indentation rule. |
| if (!_.startsWith(after, "\n") && !_.startsWith(after, "\r\n")) { |
| if (expectation === "always") { |
| complain(messages.expectedBefore); |
| } else if (blockIsMultiLine && expectation === "always-multi-line") { |
| complain(messages.expectedBeforeMultiLine); |
| } |
| } |
| |
| if ( |
| after !== "" && |
| blockIsMultiLine && |
| expectation === "never-multi-line" |
| ) { |
| complain(messages.rejectedBeforeMultiLine); |
| } |
| |
| function complain(message) { |
| if (context.fix) { |
| if (expectation.indexOf("always") === 0) { |
| const firstWhitespaceIndex = statement.raws.after.search(/\s/); |
| const newlineBefore = |
| firstWhitespaceIndex >= 0 |
| ? statement.raws.after.slice(0, firstWhitespaceIndex) |
| : statement.raws.after; |
| const newlineAfter = |
| firstWhitespaceIndex >= 0 |
| ? statement.raws.after.slice(firstWhitespaceIndex) |
| : ""; |
| const newlineIndex = newlineAfter.search(/\r?\n/); |
| |
| if (newlineIndex >= 0) { |
| statement.raws.after = |
| newlineBefore + newlineAfter.slice(newlineIndex); |
| } else { |
| statement.raws.after = |
| newlineBefore + context.newline + newlineAfter; |
| } |
| |
| return; |
| } else if (expectation === "never-multi-line") { |
| statement.raws.after = statement.raws.after.replace(/\s/g, ""); |
| |
| return; |
| } |
| } |
| |
| report({ |
| message, |
| result, |
| ruleName, |
| node: statement, |
| index |
| }); |
| } |
| } |
| }; |
| }; |
| |
| rule.ruleName = ruleName; |
| rule.messages = messages; |
| module.exports = rule; |