1 |
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2 |
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3 | 'use strict';
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4 |
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5 | const beforeBlockString = require('../../utils/beforeBlockString');
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6 | const blockString = require('../../utils/blockString');
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7 | const hasBlock = require('../../utils/hasBlock');
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8 | const hasEmptyBlock = require('../../utils/hasEmptyBlock');
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9 | const rawNodeString = require('../../utils/rawNodeString');
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10 | const report = require('../../utils/report');
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11 | const ruleMessages = require('../../utils/ruleMessages');
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12 | const validateOptions = require('../../utils/validateOptions');
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13 | const whitespaceChecker = require('../../utils/whitespaceChecker');
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14 |
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15 | const ruleName = 'block-opening-brace-newline-after';
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16 |
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17 | const messages = ruleMessages(ruleName, {
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18 | expectedAfter: () => 'Expected newline after "{"',
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19 | expectedAfterMultiLine: () => 'Expected newline after "{" of a multi-line block',
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20 | rejectedAfterMultiLine: () => 'Unexpected whitespace after "{" of a multi-line block',
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21 | });
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22 |
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23 | function rule(expectation, options, context) {
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24 | const checker = whitespaceChecker('newline', expectation, messages);
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25 |
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26 | return (root, result) => {
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27 | const validOptions = validateOptions(result, ruleName, {
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28 | actual: expectation,
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29 | possible: ['always', 'always-multi-line', 'never-multi-line'],
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30 | });
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31 |
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32 | if (!validOptions) {
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33 | return;
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34 | }
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35 |
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36 |
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37 | root.walkRules(check);
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38 | root.walkAtRules(check);
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39 |
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40 | function check(statement) {
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41 |
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42 | if (!hasBlock(statement) || hasEmptyBlock(statement)) {
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43 | return;
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44 | }
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45 |
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46 | const backupCommentNextBefores = new Map();
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47 |
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48 |
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49 | function nextNode(startNode) {
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50 | if (!startNode || !startNode.next) return null;
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51 |
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52 | if (startNode.type === 'comment') {
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53 | const reNewLine = /\r?\n/;
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54 | const newLineMatch = reNewLine.test(startNode.raws.before);
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55 |
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56 | const next = startNode.next();
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57 |
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58 | if (next && newLineMatch && !reNewLine.test(next.raws.before)) {
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59 | backupCommentNextBefores.set(next, next.raws.before);
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60 | next.raws.before = startNode.raws.before;
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61 | }
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62 |
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63 | return nextNode(next);
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64 | }
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65 |
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66 | return startNode;
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67 | }
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68 |
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69 |
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70 | const nodeToCheck = nextNode(statement.first);
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71 |
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72 | if (!nodeToCheck) {
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73 | return;
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74 | }
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75 |
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76 | checker.afterOneOnly({
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77 | source: rawNodeString(nodeToCheck),
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78 | index: -1,
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79 | lineCheckStr: blockString(statement),
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80 | err: (m) => {
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81 | if (context.fix) {
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82 | if (expectation.startsWith('always')) {
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83 | const index = nodeToCheck.raws.before.search(/\r?\n/);
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84 |
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85 | if (index >= 0) {
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86 | nodeToCheck.raws.before = nodeToCheck.raws.before.slice(index);
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87 | } else {
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88 | nodeToCheck.raws.before = context.newline + nodeToCheck.raws.before;
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89 | }
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90 |
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91 | backupCommentNextBefores.delete(nodeToCheck);
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92 |
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93 | return;
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94 | }
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95 |
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96 | if (expectation === 'never-multi-line') {
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97 |
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98 | backupCommentNextBefores.forEach((before, node) => {
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99 | node.raws.before = before;
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100 | });
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101 | backupCommentNextBefores.clear();
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102 |
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103 |
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104 | const reNewLine = /\r?\n/;
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105 | let fixTarget = statement.first;
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106 |
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107 | while (fixTarget) {
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108 | if (reNewLine.test(fixTarget.raws.before)) {
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109 | fixTarget.raws.before = fixTarget.raws.before.replace(/\r?\n/g, '');
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110 | }
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111 |
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112 | if (fixTarget.type !== 'comment') {
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113 | break;
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114 | }
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115 |
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116 | fixTarget = fixTarget.next();
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117 | }
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118 | nodeToCheck.raws.before = '';
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119 |
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120 | return;
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121 | }
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122 | }
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123 |
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124 | report({
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125 | message: m,
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126 | node: statement,
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127 | index: beforeBlockString(statement, { noRawBefore: true }).length + 1,
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128 | result,
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129 | ruleName,
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130 | });
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131 | },
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132 | });
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133 |
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134 |
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135 | backupCommentNextBefores.forEach((before, node) => {
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136 | node.raws.before = before;
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137 | });
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138 | }
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139 | };
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140 | }
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141 |
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142 | rule.ruleName = ruleName;
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143 | rule.messages = messages;
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144 | module.exports = rule;
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