193 lines
6.9 KiB
JavaScript
193 lines
6.9 KiB
JavaScript
|
/**
|
||
|
|
* @fileoverview Comma spacing - validates spacing before and after comma
|
||
|
|
* @author Vignesh Anand aka vegetableman.
|
||
|
|
* @deprecated in ESLint v8.53.0
|
||
|
|
*/
|
||
|
|
"use strict";
|
||
|
|
|
||
|
|
const astUtils = require("./utils/ast-utils");
|
||
|
|
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
// Rule Definition
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
|
||
|
|
/** @type {import('../shared/types').Rule} */
|
||
|
|
module.exports = {
|
||
|
|
meta: {
|
||
|
|
deprecated: true,
|
||
|
|
replacedBy: [],
|
||
|
|
type: "layout",
|
||
|
|
|
||
|
|
docs: {
|
||
|
|
description: "Enforce consistent spacing before and after commas",
|
||
|
|
recommended: false,
|
||
|
|
url: "https://eslint.org/docs/latest/rules/comma-spacing"
|
||
|
|
},
|
||
|
|
|
||
|
|
fixable: "whitespace",
|
||
|
|
|
||
|
|
schema: [
|
||
|
|
{
|
||
|
|
type: "object",
|
||
|
|
properties: {
|
||
|
|
before: {
|
||
|
|
type: "boolean",
|
||
|
|
default: false
|
||
|
|
},
|
||
|
|
after: {
|
||
|
|
type: "boolean",
|
||
|
|
default: true
|
||
|
|
}
|
||
|
|
},
|
||
|
|
additionalProperties: false
|
||
|
|
}
|
||
|
|
],
|
||
|
|
|
||
|
|
messages: {
|
||
|
|
missing: "A space is required {{loc}} ','.",
|
||
|
|
unexpected: "There should be no space {{loc}} ','."
|
||
|
|
}
|
||
|
|
},
|
||
|
|
|
||
|
|
create(context) {
|
||
|
|
|
||
|
|
const sourceCode = context.sourceCode;
|
||
|
|
const tokensAndComments = sourceCode.tokensAndComments;
|
||
|
|
|
||
|
|
const options = {
|
||
|
|
before: context.options[0] ? context.options[0].before : false,
|
||
|
|
after: context.options[0] ? context.options[0].after : true
|
||
|
|
};
|
||
|
|
|
||
|
|
//--------------------------------------------------------------------------
|
||
|
|
// Helpers
|
||
|
|
//--------------------------------------------------------------------------
|
||
|
|
|
||
|
|
// list of comma tokens to ignore for the check of leading whitespace
|
||
|
|
const commaTokensToIgnore = [];
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Reports a spacing error with an appropriate message.
|
||
|
|
* @param {ASTNode} node The binary expression node to report.
|
||
|
|
* @param {string} loc Is the error "before" or "after" the comma?
|
||
|
|
* @param {ASTNode} otherNode The node at the left or right of `node`
|
||
|
|
* @returns {void}
|
||
|
|
* @private
|
||
|
|
*/
|
||
|
|
function report(node, loc, otherNode) {
|
||
|
|
context.report({
|
||
|
|
node,
|
||
|
|
fix(fixer) {
|
||
|
|
if (options[loc]) {
|
||
|
|
if (loc === "before") {
|
||
|
|
return fixer.insertTextBefore(node, " ");
|
||
|
|
}
|
||
|
|
return fixer.insertTextAfter(node, " ");
|
||
|
|
|
||
|
|
}
|
||
|
|
let start, end;
|
||
|
|
const newText = "";
|
||
|
|
|
||
|
|
if (loc === "before") {
|
||
|
|
start = otherNode.range[1];
|
||
|
|
end = node.range[0];
|
||
|
|
} else {
|
||
|
|
start = node.range[1];
|
||
|
|
end = otherNode.range[0];
|
||
|
|
}
|
||
|
|
|
||
|
|
return fixer.replaceTextRange([start, end], newText);
|
||
|
|
|
||
|
|
},
|
||
|
|
messageId: options[loc] ? "missing" : "unexpected",
|
||
|
|
data: {
|
||
|
|
loc
|
||
|
|
}
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Adds null elements of the given ArrayExpression or ArrayPattern node to the ignore list.
|
||
|
|
* @param {ASTNode} node An ArrayExpression or ArrayPattern node.
|
||
|
|
* @returns {void}
|
||
|
|
*/
|
||
|
|
function addNullElementsToIgnoreList(node) {
|
||
|
|
let previousToken = sourceCode.getFirstToken(node);
|
||
|
|
|
||
|
|
node.elements.forEach(element => {
|
||
|
|
let token;
|
||
|
|
|
||
|
|
if (element === null) {
|
||
|
|
token = sourceCode.getTokenAfter(previousToken);
|
||
|
|
|
||
|
|
if (astUtils.isCommaToken(token)) {
|
||
|
|
commaTokensToIgnore.push(token);
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
token = sourceCode.getTokenAfter(element);
|
||
|
|
}
|
||
|
|
|
||
|
|
previousToken = token;
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
//--------------------------------------------------------------------------
|
||
|
|
// Public
|
||
|
|
//--------------------------------------------------------------------------
|
||
|
|
|
||
|
|
return {
|
||
|
|
"Program:exit"() {
|
||
|
|
tokensAndComments.forEach((token, i) => {
|
||
|
|
|
||
|
|
if (!astUtils.isCommaToken(token)) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
const previousToken = tokensAndComments[i - 1];
|
||
|
|
const nextToken = tokensAndComments[i + 1];
|
||
|
|
|
||
|
|
if (
|
||
|
|
previousToken &&
|
||
|
|
!astUtils.isCommaToken(previousToken) && // ignore spacing between two commas
|
||
|
|
|
||
|
|
/*
|
||
|
|
* `commaTokensToIgnore` are ending commas of `null` elements (array holes/elisions).
|
||
|
|
* In addition to spacing between two commas, this can also ignore:
|
||
|
|
*
|
||
|
|
* - Spacing after `[` (controlled by array-bracket-spacing)
|
||
|
|
* Example: [ , ]
|
||
|
|
* ^
|
||
|
|
* - Spacing after a comment (for backwards compatibility, this was possibly unintentional)
|
||
|
|
* Example: [a, /* * / ,]
|
||
|
|
* ^
|
||
|
|
*/
|
||
|
|
!commaTokensToIgnore.includes(token) &&
|
||
|
|
|
||
|
|
astUtils.isTokenOnSameLine(previousToken, token) &&
|
||
|
|
options.before !== sourceCode.isSpaceBetweenTokens(previousToken, token)
|
||
|
|
) {
|
||
|
|
report(token, "before", previousToken);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (
|
||
|
|
nextToken &&
|
||
|
|
!astUtils.isCommaToken(nextToken) && // ignore spacing between two commas
|
||
|
|
!astUtils.isClosingParenToken(nextToken) && // controlled by space-in-parens
|
||
|
|
!astUtils.isClosingBracketToken(nextToken) && // controlled by array-bracket-spacing
|
||
|
|
!astUtils.isClosingBraceToken(nextToken) && // controlled by object-curly-spacing
|
||
|
|
!(!options.after && nextToken.type === "Line") && // special case, allow space before line comment
|
||
|
|
astUtils.isTokenOnSameLine(token, nextToken) &&
|
||
|
|
options.after !== sourceCode.isSpaceBetweenTokens(token, nextToken)
|
||
|
|
) {
|
||
|
|
report(token, "after", nextToken);
|
||
|
|
}
|
||
|
|
});
|
||
|
|
},
|
||
|
|
ArrayExpression: addNullElementsToIgnoreList,
|
||
|
|
ArrayPattern: addNullElementsToIgnoreList
|
||
|
|
|
||
|
|
};
|
||
|
|
|
||
|
|
}
|
||
|
|
};
|