|
| 1 | +/** |
| 2 | + * @author Yosuke Ota |
| 3 | + */ |
| 4 | +'use strict' |
| 5 | + |
| 6 | +const { isParenthesized } = require('eslint-utils') |
| 7 | +const { wrapCoreRule } = require('../utils') |
| 8 | + |
| 9 | +// eslint-disable-next-line no-invalid-meta, no-invalid-meta-docs-categories |
| 10 | +module.exports = wrapCoreRule( |
| 11 | + require('eslint/lib/rules/no-extra-parens'), |
| 12 | + { |
| 13 | + skipDynamicArguments: true, |
| 14 | + create: createForVueSyntax |
| 15 | + } |
| 16 | +) |
| 17 | + |
| 18 | +/** |
| 19 | + * @typedef {import('vue-eslint-parser').AST.Token} Token |
| 20 | + * @typedef {import('vue-eslint-parser').AST.ESLintExpression} Expression |
| 21 | + * @typedef {import('vue-eslint-parser').AST.VExpressionContainer} VExpressionContainer |
| 22 | + * @typedef {import('vue-eslint-parser').AST.VFilterSequenceExpression} VFilterSequenceExpression |
| 23 | + */ |
| 24 | + |
| 25 | +/** |
| 26 | + * Check whether the given token is a left parenthesis. |
| 27 | + * @param {Token} token The token to check. |
| 28 | + * @returns {boolean} `true` if the token is a left parenthesis. |
| 29 | + */ |
| 30 | +function isLeftParen (token) { |
| 31 | + return token.type === 'Punctuator' && token.value === '(' |
| 32 | +} |
| 33 | + |
| 34 | +/** |
| 35 | + * Check whether the given token is a right parenthesis. |
| 36 | + * @param {Token} token The token to check. |
| 37 | + * @returns {boolean} `true` if the token is a right parenthesis. |
| 38 | + */ |
| 39 | +function isRightParen (token) { |
| 40 | + return token.type === 'Punctuator' && token.value === ')' |
| 41 | +} |
| 42 | + |
| 43 | +/** |
| 44 | + * Check whether the given token is a left brace. |
| 45 | + * @param {Token} token The token to check. |
| 46 | + * @returns {boolean} `true` if the token is a left brace. |
| 47 | + */ |
| 48 | +function isLeftBrace (token) { |
| 49 | + return token.type === 'Punctuator' && token.value === '{' |
| 50 | +} |
| 51 | + |
| 52 | +/** |
| 53 | + * Check whether the given token is a right brace. |
| 54 | + * @param {Token} token The token to check. |
| 55 | + * @returns {boolean} `true` if the token is a right brace. |
| 56 | + */ |
| 57 | +function isRightBrace (token) { |
| 58 | + return token.type === 'Punctuator' && token.value === '}' |
| 59 | +} |
| 60 | + |
| 61 | +/** |
| 62 | + * Check whether the given token is a left bracket. |
| 63 | + * @param {Token} token The token to check. |
| 64 | + * @returns {boolean} `true` if the token is a left bracket. |
| 65 | + */ |
| 66 | +function isLeftBracket (token) { |
| 67 | + return token.type === 'Punctuator' && token.value === '[' |
| 68 | +} |
| 69 | + |
| 70 | +/** |
| 71 | + * Check whether the given token is a right bracket. |
| 72 | + * @param {Token} token The token to check. |
| 73 | + * @returns {boolean} `true` if the token is a right bracket. |
| 74 | + */ |
| 75 | +function isRightBracket (token) { |
| 76 | + return token.type === 'Punctuator' && token.value === ']' |
| 77 | +} |
| 78 | + |
| 79 | +/** |
| 80 | + * Determines if a given expression node is an IIFE |
| 81 | + * @param {ASTNode} node The node to check |
| 82 | + * @returns {boolean} `true` if the given node is an IIFE |
| 83 | + */ |
| 84 | +function isIIFE (node) { |
| 85 | + return node.type === 'CallExpression' && node.callee.type === 'FunctionExpression' |
| 86 | +} |
| 87 | + |
| 88 | +function createForVueSyntax (context) { |
| 89 | + const tokenStore = context.parserServices.getTemplateBodyTokenStore && context.parserServices.getTemplateBodyTokenStore() |
| 90 | + |
| 91 | + /** |
| 92 | + * Checks if the given node turns into a filter when unwraped. |
| 93 | + * @param {Expression} node node to evaluate |
| 94 | + * @returns {boolean} `true` if the given node turns into a filter when unwraped. |
| 95 | + */ |
| 96 | + function isUnwrapChangeToFilter (expression) { |
| 97 | + let parenStack = null |
| 98 | + for (const token of tokenStore.getTokens(expression)) { |
| 99 | + if (!parenStack) { |
| 100 | + if (token.value === '|') { |
| 101 | + return true |
| 102 | + } |
| 103 | + } else { |
| 104 | + if (parenStack.isUpToken(token)) { |
| 105 | + parenStack = parenStack.upper |
| 106 | + continue |
| 107 | + } |
| 108 | + } |
| 109 | + if (isLeftParen(token)) { |
| 110 | + parenStack = { isUpToken: isRightParen, upper: parenStack } |
| 111 | + } else if (isLeftBracket(token)) { |
| 112 | + parenStack = { isUpToken: isRightBracket, upper: parenStack } |
| 113 | + } else if (isLeftBrace(token)) { |
| 114 | + parenStack = { isUpToken: isRightBrace, upper: parenStack } |
| 115 | + } |
| 116 | + } |
| 117 | + return false |
| 118 | + } |
| 119 | + /** |
| 120 | + * @param {VExpressionContainer} node |
| 121 | + */ |
| 122 | + function verify (node) { |
| 123 | + let expression = node.expression |
| 124 | + if (!expression) { |
| 125 | + return |
| 126 | + } |
| 127 | + |
| 128 | + if (expression.type === 'VFilterSequenceExpression') { |
| 129 | + expression = expression.expression |
| 130 | + } |
| 131 | + |
| 132 | + if (!isParenthesized(expression, tokenStore)) { |
| 133 | + return |
| 134 | + } |
| 135 | + |
| 136 | + if (!isParenthesized(2, expression, tokenStore)) { |
| 137 | + if (isIIFE(expression) && !isParenthesized(expression.callee, tokenStore)) { |
| 138 | + return |
| 139 | + } |
| 140 | + if (isUnwrapChangeToFilter(expression)) { |
| 141 | + return |
| 142 | + } |
| 143 | + } |
| 144 | + report(expression) |
| 145 | + } |
| 146 | + |
| 147 | + /** |
| 148 | + * Report the node |
| 149 | + * @param {Expression} node node to evaluate |
| 150 | + * @returns {void} |
| 151 | + * @private |
| 152 | + */ |
| 153 | + function report (node) { |
| 154 | + const sourceCode = context.getSourceCode() |
| 155 | + const leftParenToken = tokenStore.getTokenBefore(node) |
| 156 | + const rightParenToken = tokenStore.getTokenAfter(node) |
| 157 | + |
| 158 | + context.report({ |
| 159 | + node, |
| 160 | + loc: leftParenToken.loc, |
| 161 | + messageId: 'unexpected', |
| 162 | + fix (fixer) { |
| 163 | + const parenthesizedSource = sourceCode.text.slice(leftParenToken.range[1], rightParenToken.range[0]) |
| 164 | + |
| 165 | + return fixer.replaceTextRange([ |
| 166 | + leftParenToken.range[0], |
| 167 | + rightParenToken.range[1] |
| 168 | + ], parenthesizedSource) |
| 169 | + } |
| 170 | + }) |
| 171 | + } |
| 172 | + |
| 173 | + return { |
| 174 | + "VAttribute[directive=true][key.name.name='bind'] > VExpressionContainer": verify, |
| 175 | + 'VElement > VExpressionContainer': verify |
| 176 | + } |
| 177 | +} |
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