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Name	Size	Permission	Action
code-path-analysis	[ DIR ]	drwxr-xr-x
apply-disable-directives.js	18.66 KB	-rw-r--r--
esquery.js	9.1 KB	-rw-r--r--
file-context.js	3.53 KB	-rw-r--r--
file-report.js	18.25 KB	-rw-r--r--
index.js	179 B	-rw-r--r--
interpolate.js	1.31 KB	-rw-r--r--
linter.js	75.61 KB	-rw-r--r--
rule-fixer.js	5.04 KB	-rw-r--r--
rules.js	1.63 KB	-rw-r--r--
source-code-fixer.js	4.11 KB	-rw-r--r--
source-code-traverser.js	9.47 KB	-rw-r--r--
source-code-visitor.js	2.1 KB	-rw-r--r--
timing.js	3.73 KB	-rw-r--r--
vfile.js	2.75 KB	-rw-r--r--

Code Editor : source-code-fixer.js

/**
 * @fileoverview An object that caches and applies source code fixes.
 * @author Nicholas C. Zakas
 */
"use strict";

//------------------------------------------------------------------------------
// Requirements
//------------------------------------------------------------------------------

const debug = require("debug")("eslint:source-code-fixer");

//------------------------------------------------------------------------------
// Helpers
//------------------------------------------------------------------------------

const BOM = "\uFEFF";

/**
 * Compares items in a messages array by range.
 * @param {Message} a The first message.
 * @param {Message} b The second message.
 * @returns {number} -1 if a comes before b, 1 if a comes after b, 0 if equal.
 * @private
 */
function compareMessagesByFixRange(a, b) {
	return a.fix.range[0] - b.fix.range[0] || a.fix.range[1] - b.fix.range[1];
}

/**
 * Compares items in a messages array by line and column.
 * @param {Message} a The first message.
 * @param {Message} b The second message.
 * @returns {number} -1 if a comes before b, 1 if a comes after b, 0 if equal.
 * @private
 */
function compareMessagesByLocation(a, b) {
	return a.line - b.line || a.column - b.column;
}

//------------------------------------------------------------------------------
// Public Interface
//------------------------------------------------------------------------------

/**
 * Utility for apply fixes to source code.
 * @constructor
 */
function SourceCodeFixer() {
	Object.freeze(this);
}

/**
 * Applies the fixes specified by the messages to the given text. Tries to be
 * smart about the fixes and won't apply fixes over the same area in the text.
 * @param {string} sourceText The text to apply the changes to.
 * @param {Message[]} messages The array of messages reported by ESLint.
 * @param {boolean|Function} [shouldFix=true] Determines whether each message should be fixed
 * @returns {Object} An object containing the fixed text and any unfixed messages.
 */
SourceCodeFixer.applyFixes = function (sourceText, messages, shouldFix) {
	debug("Applying fixes");

if (shouldFix === false) {
		debug("shouldFix parameter was false, not attempting fixes");
		return {
			fixed: false,
			messages,
			output: sourceText,
		};
	}

// clone the array
	const remainingMessages = [],
		fixes = [],
		bom = sourceText.startsWith(BOM) ? BOM : "",
		text = bom ? sourceText.slice(1) : sourceText;
	let lastPos = Number.NEGATIVE_INFINITY,
		output = bom;

/**
	 * Try to use the 'fix' from a problem.
	 * @param {Message} problem The message object to apply fixes from
	 * @returns {boolean} Whether fix was successfully applied
	 */
	function attemptFix(problem) {
		const fix = problem.fix;
		const start = fix.range[0];
		const end = fix.range[1];

// Remain it as a problem if it's overlapped or it's a negative range
		if (lastPos >= start || start > end) {
			remainingMessages.push(problem);
			return false;
		}

// Remove BOM.
		if (
			(start < 0 && end >= 0) ||
			(start === 0 && fix.text.startsWith(BOM))
		) {
			output = "";
		}

// Make output to this fix.
		output += text.slice(Math.max(0, lastPos), Math.max(0, start));
		output += fix.text;
		lastPos = end;
		return true;
	}

messages.forEach(problem => {
		if (Object.hasOwn(problem, "fix") && problem.fix) {
			fixes.push(problem);
		} else {
			remainingMessages.push(problem);
		}
	});

if (fixes.length) {
		debug("Found fixes to apply");
		let fixesWereApplied = false;

for (const problem of fixes.sort(compareMessagesByFixRange)) {
			if (typeof shouldFix !== "function" || shouldFix(problem)) {
				attemptFix(problem);

/*
				 * The only time attemptFix will fail is if a previous fix was
				 * applied which conflicts with it.  So we can mark this as true.
				 */
				fixesWereApplied = true;
			} else {
				remainingMessages.push(problem);
			}
		}
		output += text.slice(Math.max(0, lastPos));

return {
			fixed: fixesWereApplied,
			messages: remainingMessages.sort(compareMessagesByLocation),
			output,
		};
	}

debug("No fixes to apply");
	return {
		fixed: false,
		messages,
		output: bom + text,
	};
};

module.exports = SourceCodeFixer;

Urban Research Lab

Urban Research Lab

The Urban Research Lab (URL) at IIIT-Delhi was established in 2020, during a time when the pandemic brought the complexities of urban life more visible than ever. What started as an initiative by faculty and students has grown into a collaborative space for critically exploring and reimagining the urban questions through research, dialogue, and interdisciplinary engagement.