forked from zhurui/management
373 lines
12 KiB
JavaScript
373 lines
12 KiB
JavaScript
|
/**
|
||
|
|
* @fileoverview Source code for spaced-comments rule
|
||
|
|
* @author Gyandeep Singh
|
||
|
|
*/
|
||
|
|
"use strict";
|
||
|
|
|
||
|
|
const lodash = require("lodash");
|
||
|
|
const astUtils = require("../ast-utils");
|
||
|
|
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
// Helpers
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Escapes the control characters of a given string.
|
||
|
|
* @param {string} s - A string to escape.
|
||
|
|
* @returns {string} An escaped string.
|
||
|
|
*/
|
||
|
|
function escape(s) {
|
||
|
|
return `(?:${lodash.escapeRegExp(s)})`;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Escapes the control characters of a given string.
|
||
|
|
* And adds a repeat flag.
|
||
|
|
* @param {string} s - A string to escape.
|
||
|
|
* @returns {string} An escaped string.
|
||
|
|
*/
|
||
|
|
function escapeAndRepeat(s) {
|
||
|
|
return `${escape(s)}+`;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Parses `markers` option.
|
||
|
|
* If markers don't include `"*"`, this adds `"*"` to allow JSDoc comments.
|
||
|
|
* @param {string[]} [markers] - A marker list.
|
||
|
|
* @returns {string[]} A marker list.
|
||
|
|
*/
|
||
|
|
function parseMarkersOption(markers) {
|
||
|
|
|
||
|
|
// `*` is a marker for JSDoc comments.
|
||
|
|
if (markers.indexOf("*") === -1) {
|
||
|
|
return markers.concat("*");
|
||
|
|
}
|
||
|
|
|
||
|
|
return markers;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Creates string pattern for exceptions.
|
||
|
|
* Generated pattern:
|
||
|
|
*
|
||
|
|
* 1. A space or an exception pattern sequence.
|
||
|
|
*
|
||
|
|
* @param {string[]} exceptions - An exception pattern list.
|
||
|
|
* @returns {string} A regular expression string for exceptions.
|
||
|
|
*/
|
||
|
|
function createExceptionsPattern(exceptions) {
|
||
|
|
let pattern = "";
|
||
|
|
|
||
|
|
/*
|
||
|
|
* A space or an exception pattern sequence.
|
||
|
|
* [] ==> "\s"
|
||
|
|
* ["-"] ==> "(?:\s|\-+$)"
|
||
|
|
* ["-", "="] ==> "(?:\s|(?:\-+|=+)$)"
|
||
|
|
* ["-", "=", "--=="] ==> "(?:\s|(?:\-+|=+|(?:\-\-==)+)$)" ==> https://jex.im/regulex/#!embed=false&flags=&re=(%3F%3A%5Cs%7C(%3F%3A%5C-%2B%7C%3D%2B%7C(%3F%3A%5C-%5C-%3D%3D)%2B)%24)
|
||
|
|
*/
|
||
|
|
if (exceptions.length === 0) {
|
||
|
|
|
||
|
|
// a space.
|
||
|
|
pattern += "\\s";
|
||
|
|
} else {
|
||
|
|
|
||
|
|
// a space or...
|
||
|
|
pattern += "(?:\\s|";
|
||
|
|
|
||
|
|
if (exceptions.length === 1) {
|
||
|
|
|
||
|
|
// a sequence of the exception pattern.
|
||
|
|
pattern += escapeAndRepeat(exceptions[0]);
|
||
|
|
} else {
|
||
|
|
|
||
|
|
// a sequence of one of the exception patterns.
|
||
|
|
pattern += "(?:";
|
||
|
|
pattern += exceptions.map(escapeAndRepeat).join("|");
|
||
|
|
pattern += ")";
|
||
|
|
}
|
||
|
|
pattern += `(?:$|[${Array.from(astUtils.LINEBREAKS).join("")}]))`;
|
||
|
|
}
|
||
|
|
|
||
|
|
return pattern;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Creates RegExp object for `always` mode.
|
||
|
|
* Generated pattern for beginning of comment:
|
||
|
|
*
|
||
|
|
* 1. First, a marker or nothing.
|
||
|
|
* 2. Next, a space or an exception pattern sequence.
|
||
|
|
*
|
||
|
|
* @param {string[]} markers - A marker list.
|
||
|
|
* @param {string[]} exceptions - An exception pattern list.
|
||
|
|
* @returns {RegExp} A RegExp object for the beginning of a comment in `always` mode.
|
||
|
|
*/
|
||
|
|
function createAlwaysStylePattern(markers, exceptions) {
|
||
|
|
let pattern = "^";
|
||
|
|
|
||
|
|
/*
|
||
|
|
* A marker or nothing.
|
||
|
|
* ["*"] ==> "\*?"
|
||
|
|
* ["*", "!"] ==> "(?:\*|!)?"
|
||
|
|
* ["*", "/", "!<"] ==> "(?:\*|\/|(?:!<))?" ==> https://jex.im/regulex/#!embed=false&flags=&re=(%3F%3A%5C*%7C%5C%2F%7C(%3F%3A!%3C))%3F
|
||
|
|
*/
|
||
|
|
if (markers.length === 1) {
|
||
|
|
|
||
|
|
// the marker.
|
||
|
|
pattern += escape(markers[0]);
|
||
|
|
} else {
|
||
|
|
|
||
|
|
// one of markers.
|
||
|
|
pattern += "(?:";
|
||
|
|
pattern += markers.map(escape).join("|");
|
||
|
|
pattern += ")";
|
||
|
|
}
|
||
|
|
|
||
|
|
pattern += "?"; // or nothing.
|
||
|
|
pattern += createExceptionsPattern(exceptions);
|
||
|
|
|
||
|
|
return new RegExp(pattern);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Creates RegExp object for `never` mode.
|
||
|
|
* Generated pattern for beginning of comment:
|
||
|
|
*
|
||
|
|
* 1. First, a marker or nothing (captured).
|
||
|
|
* 2. Next, a space or a tab.
|
||
|
|
*
|
||
|
|
* @param {string[]} markers - A marker list.
|
||
|
|
* @returns {RegExp} A RegExp object for `never` mode.
|
||
|
|
*/
|
||
|
|
function createNeverStylePattern(markers) {
|
||
|
|
const pattern = `^(${markers.map(escape).join("|")})?[ \t]+`;
|
||
|
|
|
||
|
|
return new RegExp(pattern);
|
||
|
|
}
|
||
|
|
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
// Rule Definition
|
||
|
|
//------------------------------------------------------------------------------
|
||
|
|
|
||
|
|
module.exports = {
|
||
|
|
meta: {
|
||
|
|
docs: {
|
||
|
|
description: "enforce consistent spacing after the `//` or `/*` in a comment",
|
||
|
|
category: "Stylistic Issues",
|
||
|
|
recommended: false,
|
||
|
|
url: "https://eslint.org/docs/rules/spaced-comment"
|
||
|
|
},
|
||
|
|
|
||
|
|
fixable: "whitespace",
|
||
|
|
|
||
|
|
schema: [
|
||
|
|
{
|
||
|
|
enum: ["always", "never"]
|
||
|
|
},
|
||
|
|
{
|
||
|
|
type: "object",
|
||
|
|
properties: {
|
||
|
|
exceptions: {
|
||
|
|
type: "array",
|
||
|
|
items: {
|
||
|
|
type: "string"
|
||
|
|
}
|
||
|
|
},
|
||
|
|
markers: {
|
||
|
|
type: "array",
|
||
|
|
items: {
|
||
|
|
type: "string"
|
||
|
|
}
|
||
|
|
},
|
||
|
|
line: {
|
||
|
|
type: "object",
|
||
|
|
properties: {
|
||
|
|
exceptions: {
|
||
|
|
type: "array",
|
||
|
|
items: {
|
||
|
|
type: "string"
|
||
|
|
}
|
||
|
|
},
|
||
|
|
markers: {
|
||
|
|
type: "array",
|
||
|
|
items: {
|
||
|
|
type: "string"
|
||
|
|
}
|
||
|
|
}
|
||
|
|
},
|
||
|
|
additionalProperties: false
|
||
|
|
},
|
||
|
|
block: {
|
||
|
|
type: "object",
|
||
|
|
properties: {
|
||
|
|
exceptions: {
|
||
|
|
type: "array",
|
||
|
|
items: {
|
||
|
|
type: "string"
|
||
|
|
}
|
||
|
|
},
|
||
|
|
markers: {
|
||
|
|
type: "array",
|
||
|
|
items: {
|
||
|
|
type: "string"
|
||
|
|
}
|
||
|
|
},
|
||
|
|
balanced: {
|
||
|
|
type: "boolean"
|
||
|
|
}
|
||
|
|
},
|
||
|
|
additionalProperties: false
|
||
|
|
}
|
||
|
|
},
|
||
|
|
additionalProperties: false
|
||
|
|
}
|
||
|
|
]
|
||
|
|
},
|
||
|
|
|
||
|
|
create(context) {
|
||
|
|
|
||
|
|
const sourceCode = context.getSourceCode();
|
||
|
|
|
||
|
|
// Unless the first option is never, require a space
|
||
|
|
const requireSpace = context.options[0] !== "never";
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Parse the second options.
|
||
|
|
* If markers don't include `"*"`, it's added automatically for JSDoc
|
||
|
|
* comments.
|
||
|
|
*/
|
||
|
|
const config = context.options[1] || {};
|
||
|
|
const balanced = config.block && config.block.balanced;
|
||
|
|
|
||
|
|
const styleRules = ["block", "line"].reduce((rule, type) => {
|
||
|
|
const markers = parseMarkersOption(config[type] && config[type].markers || config.markers || []);
|
||
|
|
const exceptions = config[type] && config[type].exceptions || config.exceptions || [];
|
||
|
|
const endNeverPattern = "[ \t]+$";
|
||
|
|
|
||
|
|
// Create RegExp object for valid patterns.
|
||
|
|
rule[type] = {
|
||
|
|
beginRegex: requireSpace ? createAlwaysStylePattern(markers, exceptions) : createNeverStylePattern(markers),
|
||
|
|
endRegex: balanced && requireSpace ? new RegExp(`${createExceptionsPattern(exceptions)}$`) : new RegExp(endNeverPattern),
|
||
|
|
hasExceptions: exceptions.length > 0,
|
||
|
|
markers: new RegExp(`^(${markers.map(escape).join("|")})`)
|
||
|
|
};
|
||
|
|
|
||
|
|
return rule;
|
||
|
|
}, {});
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Reports a beginning spacing error with an appropriate message.
|
||
|
|
* @param {ASTNode} node - A comment node to check.
|
||
|
|
* @param {string} message - An error message to report.
|
||
|
|
* @param {Array} match - An array of match results for markers.
|
||
|
|
* @param {string} refChar - Character used for reference in the error message.
|
||
|
|
* @returns {void}
|
||
|
|
*/
|
||
|
|
function reportBegin(node, message, match, refChar) {
|
||
|
|
const type = node.type.toLowerCase(),
|
||
|
|
commentIdentifier = type === "block" ? "/*" : "//";
|
||
|
|
|
||
|
|
context.report({
|
||
|
|
node,
|
||
|
|
fix(fixer) {
|
||
|
|
const start = node.range[0];
|
||
|
|
let end = start + 2;
|
||
|
|
|
||
|
|
if (requireSpace) {
|
||
|
|
if (match) {
|
||
|
|
end += match[0].length;
|
||
|
|
}
|
||
|
|
return fixer.insertTextAfterRange([start, end], " ");
|
||
|
|
}
|
||
|
|
end += match[0].length;
|
||
|
|
return fixer.replaceTextRange([start, end], commentIdentifier + (match[1] ? match[1] : ""));
|
||
|
|
|
||
|
|
},
|
||
|
|
message,
|
||
|
|
data: { refChar }
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Reports an ending spacing error with an appropriate message.
|
||
|
|
* @param {ASTNode} node - A comment node to check.
|
||
|
|
* @param {string} message - An error message to report.
|
||
|
|
* @param {string} match - An array of the matched whitespace characters.
|
||
|
|
* @returns {void}
|
||
|
|
*/
|
||
|
|
function reportEnd(node, message, match) {
|
||
|
|
context.report({
|
||
|
|
node,
|
||
|
|
fix(fixer) {
|
||
|
|
if (requireSpace) {
|
||
|
|
return fixer.insertTextAfterRange([node.range[0], node.range[1] - 2], " ");
|
||
|
|
}
|
||
|
|
const end = node.range[1] - 2,
|
||
|
|
start = end - match[0].length;
|
||
|
|
|
||
|
|
return fixer.replaceTextRange([start, end], "");
|
||
|
|
|
||
|
|
},
|
||
|
|
message
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Reports a given comment if it's invalid.
|
||
|
|
* @param {ASTNode} node - a comment node to check.
|
||
|
|
* @returns {void}
|
||
|
|
*/
|
||
|
|
function checkCommentForSpace(node) {
|
||
|
|
const type = node.type.toLowerCase(),
|
||
|
|
rule = styleRules[type],
|
||
|
|
commentIdentifier = type === "block" ? "/*" : "//";
|
||
|
|
|
||
|
|
// Ignores empty comments.
|
||
|
|
if (node.value.length === 0) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
const beginMatch = rule.beginRegex.exec(node.value);
|
||
|
|
const endMatch = rule.endRegex.exec(node.value);
|
||
|
|
|
||
|
|
// Checks.
|
||
|
|
if (requireSpace) {
|
||
|
|
if (!beginMatch) {
|
||
|
|
const hasMarker = rule.markers.exec(node.value);
|
||
|
|
const marker = hasMarker ? commentIdentifier + hasMarker[0] : commentIdentifier;
|
||
|
|
|
||
|
|
if (rule.hasExceptions) {
|
||
|
|
reportBegin(node, "Expected exception block, space or tab after '{{refChar}}' in comment.", hasMarker, marker);
|
||
|
|
} else {
|
||
|
|
reportBegin(node, "Expected space or tab after '{{refChar}}' in comment.", hasMarker, marker);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (balanced && type === "block" && !endMatch) {
|
||
|
|
reportEnd(node, "Expected space or tab before '*/' in comment.");
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
if (beginMatch) {
|
||
|
|
if (!beginMatch[1]) {
|
||
|
|
reportBegin(node, "Unexpected space or tab after '{{refChar}}' in comment.", beginMatch, commentIdentifier);
|
||
|
|
} else {
|
||
|
|
reportBegin(node, "Unexpected space or tab after marker ({{refChar}}) in comment.", beginMatch, beginMatch[1]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
if (balanced && type === "block" && endMatch) {
|
||
|
|
reportEnd(node, "Unexpected space or tab before '*/' in comment.", endMatch);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return {
|
||
|
|
Program() {
|
||
|
|
const comments = sourceCode.getAllComments();
|
||
|
|
|
||
|
|
comments.filter(token => token.type !== "Shebang").forEach(checkCommentForSpace);
|
||
|
|
}
|
||
|
|
};
|
||
|
|
}
|
||
|
|
};
|