source: imaps-frontend/node_modules/eslint/lib/rules/space-in-parens.js@ d565449

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Last change on this file since d565449 was d565449, checked in by stefan toskovski <stefantoska84@…>, 4 weeks ago

Update repo after prototype presentation
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[d565449]1/**
2 * @fileoverview Disallows or enforces spaces inside of parentheses.
3 * @author Jonathan Rajavuori
4 * @deprecated in ESLint v8.53.0
5 */
6"use strict";
7
8const astUtils = require("./utils/ast-utils");
9
10//------------------------------------------------------------------------------
11// Rule Definition
12//------------------------------------------------------------------------------
13
14/** @type {import('../shared/types').Rule} */
15module.exports = {
16 meta: {
17 deprecated: true,
18 replacedBy: [],
19 type: "layout",
20
21 docs: {
22 description: "Enforce consistent spacing inside parentheses",
23 recommended: false,
24 url: "https://eslint.org/docs/latest/rules/space-in-parens"
25 },
26
27 fixable: "whitespace",
28
29 schema: [
30 {
31 enum: ["always", "never"]
32 },
33 {
34 type: "object",
35 properties: {
36 exceptions: {
37 type: "array",
38 items: {
39 enum: ["{}", "[]", "()", "empty"]
40 },
41 uniqueItems: true
42 }
43 },
44 additionalProperties: false
45 }
46 ],
47
48 messages: {
49 missingOpeningSpace: "There must be a space after this paren.",
50 missingClosingSpace: "There must be a space before this paren.",
51 rejectedOpeningSpace: "There should be no space after this paren.",
52 rejectedClosingSpace: "There should be no space before this paren."
53 }
54 },
55
56 create(context) {
57 const ALWAYS = context.options[0] === "always",
58 exceptionsArrayOptions = (context.options[1] && context.options[1].exceptions) || [],
59 options = {};
60
61 let exceptions;
62
63 if (exceptionsArrayOptions.length) {
64 options.braceException = exceptionsArrayOptions.includes("{}");
65 options.bracketException = exceptionsArrayOptions.includes("[]");
66 options.parenException = exceptionsArrayOptions.includes("()");
67 options.empty = exceptionsArrayOptions.includes("empty");
68 }
69
70 /**
71 * Produces an object with the opener and closer exception values
72 * @returns {Object} `openers` and `closers` exception values
73 * @private
74 */
75 function getExceptions() {
76 const openers = [],
77 closers = [];
78
79 if (options.braceException) {
80 openers.push("{");
81 closers.push("}");
82 }
83
84 if (options.bracketException) {
85 openers.push("[");
86 closers.push("]");
87 }
88
89 if (options.parenException) {
90 openers.push("(");
91 closers.push(")");
92 }
93
94 if (options.empty) {
95 openers.push(")");
96 closers.push("(");
97 }
98
99 return {
100 openers,
101 closers
102 };
103 }
104
105 //--------------------------------------------------------------------------
106 // Helpers
107 //--------------------------------------------------------------------------
108 const sourceCode = context.sourceCode;
109
110 /**
111 * Determines if a token is one of the exceptions for the opener paren
112 * @param {Object} token The token to check
113 * @returns {boolean} True if the token is one of the exceptions for the opener paren
114 */
115 function isOpenerException(token) {
116 return exceptions.openers.includes(token.value);
117 }
118
119 /**
120 * Determines if a token is one of the exceptions for the closer paren
121 * @param {Object} token The token to check
122 * @returns {boolean} True if the token is one of the exceptions for the closer paren
123 */
124 function isCloserException(token) {
125 return exceptions.closers.includes(token.value);
126 }
127
128 /**
129 * Determines if an opening paren is immediately followed by a required space
130 * @param {Object} openingParenToken The paren token
131 * @param {Object} tokenAfterOpeningParen The token after it
132 * @returns {boolean} True if the opening paren is missing a required space
133 */
134 function openerMissingSpace(openingParenToken, tokenAfterOpeningParen) {
135 if (sourceCode.isSpaceBetweenTokens(openingParenToken, tokenAfterOpeningParen)) {
136 return false;
137 }
138
139 if (!options.empty && astUtils.isClosingParenToken(tokenAfterOpeningParen)) {
140 return false;
141 }
142
143 if (ALWAYS) {
144 return !isOpenerException(tokenAfterOpeningParen);
145 }
146 return isOpenerException(tokenAfterOpeningParen);
147 }
148
149 /**
150 * Determines if an opening paren is immediately followed by a disallowed space
151 * @param {Object} openingParenToken The paren token
152 * @param {Object} tokenAfterOpeningParen The token after it
153 * @returns {boolean} True if the opening paren has a disallowed space
154 */
155 function openerRejectsSpace(openingParenToken, tokenAfterOpeningParen) {
156 if (!astUtils.isTokenOnSameLine(openingParenToken, tokenAfterOpeningParen)) {
157 return false;
158 }
159
160 if (tokenAfterOpeningParen.type === "Line") {
161 return false;
162 }
163
164 if (!sourceCode.isSpaceBetweenTokens(openingParenToken, tokenAfterOpeningParen)) {
165 return false;
166 }
167
168 if (ALWAYS) {
169 return isOpenerException(tokenAfterOpeningParen);
170 }
171 return !isOpenerException(tokenAfterOpeningParen);
172 }
173
174 /**
175 * Determines if a closing paren is immediately preceded by a required space
176 * @param {Object} tokenBeforeClosingParen The token before the paren
177 * @param {Object} closingParenToken The paren token
178 * @returns {boolean} True if the closing paren is missing a required space
179 */
180 function closerMissingSpace(tokenBeforeClosingParen, closingParenToken) {
181 if (sourceCode.isSpaceBetweenTokens(tokenBeforeClosingParen, closingParenToken)) {
182 return false;
183 }
184
185 if (!options.empty && astUtils.isOpeningParenToken(tokenBeforeClosingParen)) {
186 return false;
187 }
188
189 if (ALWAYS) {
190 return !isCloserException(tokenBeforeClosingParen);
191 }
192 return isCloserException(tokenBeforeClosingParen);
193 }
194
195 /**
196 * Determines if a closer paren is immediately preceded by a disallowed space
197 * @param {Object} tokenBeforeClosingParen The token before the paren
198 * @param {Object} closingParenToken The paren token
199 * @returns {boolean} True if the closing paren has a disallowed space
200 */
201 function closerRejectsSpace(tokenBeforeClosingParen, closingParenToken) {
202 if (!astUtils.isTokenOnSameLine(tokenBeforeClosingParen, closingParenToken)) {
203 return false;
204 }
205
206 if (!sourceCode.isSpaceBetweenTokens(tokenBeforeClosingParen, closingParenToken)) {
207 return false;
208 }
209
210 if (ALWAYS) {
211 return isCloserException(tokenBeforeClosingParen);
212 }
213 return !isCloserException(tokenBeforeClosingParen);
214 }
215
216 //--------------------------------------------------------------------------
217 // Public
218 //--------------------------------------------------------------------------
219
220 return {
221 Program: function checkParenSpaces(node) {
222 exceptions = getExceptions();
223 const tokens = sourceCode.tokensAndComments;
224
225 tokens.forEach((token, i) => {
226 const prevToken = tokens[i - 1];
227 const nextToken = tokens[i + 1];
228
229 // if token is not an opening or closing paren token, do nothing
230 if (!astUtils.isOpeningParenToken(token) && !astUtils.isClosingParenToken(token)) {
231 return;
232 }
233
234 // if token is an opening paren and is not followed by a required space
235 if (token.value === "(" && openerMissingSpace(token, nextToken)) {
236 context.report({
237 node,
238 loc: token.loc,
239 messageId: "missingOpeningSpace",
240 fix(fixer) {
241 return fixer.insertTextAfter(token, " ");
242 }
243 });
244 }
245
246 // if token is an opening paren and is followed by a disallowed space
247 if (token.value === "(" && openerRejectsSpace(token, nextToken)) {
248 context.report({
249 node,
250 loc: { start: token.loc.end, end: nextToken.loc.start },
251 messageId: "rejectedOpeningSpace",
252 fix(fixer) {
253 return fixer.removeRange([token.range[1], nextToken.range[0]]);
254 }
255 });
256 }
257
258 // if token is a closing paren and is not preceded by a required space
259 if (token.value === ")" && closerMissingSpace(prevToken, token)) {
260 context.report({
261 node,
262 loc: token.loc,
263 messageId: "missingClosingSpace",
264 fix(fixer) {
265 return fixer.insertTextBefore(token, " ");
266 }
267 });
268 }
269
270 // if token is a closing paren and is preceded by a disallowed space
271 if (token.value === ")" && closerRejectsSpace(prevToken, token)) {
272 context.report({
273 node,
274 loc: { start: prevToken.loc.end, end: token.loc.start },
275 messageId: "rejectedClosingSpace",
276 fix(fixer) {
277 return fixer.removeRange([prevToken.range[1], token.range[0]]);
278 }
279 });
280 }
281 });
282 }
283 };
284 }
285};
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