309 lines
11 KiB
JavaScript
309 lines
11 KiB
JavaScript
|
/**
|
||
|
|
* @fileoverview Validate closing bracket location in JSX
|
||
|
|
* @author Yannick Croissant
|
||
|
|
*/
|
||
|
|
|
||
|
|
'use strict';
|
||
|
|
|
||
|
|
const has = require('object.hasown/polyfill')();
|
||
|
|
const docsUrl = require('../util/docsUrl');
|
||
|
|
const report = require('../util/report');
|
||
|
|
|
||
|
|
// ------------------------------------------------------------------------------
|
||
|
|
// Rule Definition
|
||
|
|
// ------------------------------------------------------------------------------
|
||
|
|
|
||
|
|
const messages = {
|
||
|
|
bracketLocation: 'The closing bracket must be {{location}}{{details}}',
|
||
|
|
};
|
||
|
|
|
||
|
|
module.exports = {
|
||
|
|
meta: {
|
||
|
|
docs: {
|
||
|
|
description: 'Enforce closing bracket location in JSX',
|
||
|
|
category: 'Stylistic Issues',
|
||
|
|
recommended: false,
|
||
|
|
url: docsUrl('jsx-closing-bracket-location'),
|
||
|
|
},
|
||
|
|
fixable: 'code',
|
||
|
|
|
||
|
|
messages,
|
||
|
|
|
||
|
|
schema: [{
|
||
|
|
anyOf: [
|
||
|
|
{
|
||
|
|
enum: ['after-props', 'props-aligned', 'tag-aligned', 'line-aligned'],
|
||
|
|
},
|
||
|
|
{
|
||
|
|
type: 'object',
|
||
|
|
properties: {
|
||
|
|
location: {
|
||
|
|
enum: ['after-props', 'props-aligned', 'tag-aligned', 'line-aligned'],
|
||
|
|
},
|
||
|
|
},
|
||
|
|
additionalProperties: false,
|
||
|
|
}, {
|
||
|
|
type: 'object',
|
||
|
|
properties: {
|
||
|
|
nonEmpty: {
|
||
|
|
enum: ['after-props', 'props-aligned', 'tag-aligned', 'line-aligned', false],
|
||
|
|
},
|
||
|
|
selfClosing: {
|
||
|
|
enum: ['after-props', 'props-aligned', 'tag-aligned', 'line-aligned', false],
|
||
|
|
},
|
||
|
|
},
|
||
|
|
additionalProperties: false,
|
||
|
|
},
|
||
|
|
],
|
||
|
|
}],
|
||
|
|
},
|
||
|
|
|
||
|
|
create(context) {
|
||
|
|
const MESSAGE_LOCATION = {
|
||
|
|
'after-props': 'placed after the last prop',
|
||
|
|
'after-tag': 'placed after the opening tag',
|
||
|
|
'props-aligned': 'aligned with the last prop',
|
||
|
|
'tag-aligned': 'aligned with the opening tag',
|
||
|
|
'line-aligned': 'aligned with the line containing the opening tag',
|
||
|
|
};
|
||
|
|
const DEFAULT_LOCATION = 'tag-aligned';
|
||
|
|
|
||
|
|
const config = context.options[0];
|
||
|
|
const options = {
|
||
|
|
nonEmpty: DEFAULT_LOCATION,
|
||
|
|
selfClosing: DEFAULT_LOCATION,
|
||
|
|
};
|
||
|
|
|
||
|
|
if (typeof config === 'string') {
|
||
|
|
// simple shorthand [1, 'something']
|
||
|
|
options.nonEmpty = config;
|
||
|
|
options.selfClosing = config;
|
||
|
|
} else if (typeof config === 'object') {
|
||
|
|
// [1, {location: 'something'}] (back-compat)
|
||
|
|
if (has(config, 'location')) {
|
||
|
|
options.nonEmpty = config.location;
|
||
|
|
options.selfClosing = config.location;
|
||
|
|
}
|
||
|
|
// [1, {nonEmpty: 'something'}]
|
||
|
|
if (has(config, 'nonEmpty')) {
|
||
|
|
options.nonEmpty = config.nonEmpty;
|
||
|
|
}
|
||
|
|
// [1, {selfClosing: 'something'}]
|
||
|
|
if (has(config, 'selfClosing')) {
|
||
|
|
options.selfClosing = config.selfClosing;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get expected location for the closing bracket
|
||
|
|
* @param {Object} tokens Locations of the opening bracket, closing bracket and last prop
|
||
|
|
* @return {String} Expected location for the closing bracket
|
||
|
|
*/
|
||
|
|
function getExpectedLocation(tokens) {
|
||
|
|
let location;
|
||
|
|
// Is always after the opening tag if there is no props
|
||
|
|
if (typeof tokens.lastProp === 'undefined') {
|
||
|
|
location = 'after-tag';
|
||
|
|
// Is always after the last prop if this one is on the same line as the opening bracket
|
||
|
|
} else if (tokens.opening.line === tokens.lastProp.lastLine) {
|
||
|
|
location = 'after-props';
|
||
|
|
// Else use configuration dependent on selfClosing property
|
||
|
|
} else {
|
||
|
|
location = tokens.selfClosing ? options.selfClosing : options.nonEmpty;
|
||
|
|
}
|
||
|
|
return location;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the correct 0-indexed column for the closing bracket, given the
|
||
|
|
* expected location.
|
||
|
|
* @param {Object} tokens Locations of the opening bracket, closing bracket and last prop
|
||
|
|
* @param {String} expectedLocation Expected location for the closing bracket
|
||
|
|
* @return {?Number} The correct column for the closing bracket, or null
|
||
|
|
*/
|
||
|
|
function getCorrectColumn(tokens, expectedLocation) {
|
||
|
|
switch (expectedLocation) {
|
||
|
|
case 'props-aligned':
|
||
|
|
return tokens.lastProp.column;
|
||
|
|
case 'tag-aligned':
|
||
|
|
return tokens.opening.column;
|
||
|
|
case 'line-aligned':
|
||
|
|
return tokens.openingStartOfLine.column;
|
||
|
|
default:
|
||
|
|
return null;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Check if the closing bracket is correctly located
|
||
|
|
* @param {Object} tokens Locations of the opening bracket, closing bracket and last prop
|
||
|
|
* @param {String} expectedLocation Expected location for the closing bracket
|
||
|
|
* @return {Boolean} True if the closing bracket is correctly located, false if not
|
||
|
|
*/
|
||
|
|
function hasCorrectLocation(tokens, expectedLocation) {
|
||
|
|
switch (expectedLocation) {
|
||
|
|
case 'after-tag':
|
||
|
|
return tokens.tag.line === tokens.closing.line;
|
||
|
|
case 'after-props':
|
||
|
|
return tokens.lastProp.lastLine === tokens.closing.line;
|
||
|
|
case 'props-aligned':
|
||
|
|
case 'tag-aligned':
|
||
|
|
case 'line-aligned': {
|
||
|
|
const correctColumn = getCorrectColumn(tokens, expectedLocation);
|
||
|
|
return correctColumn === tokens.closing.column;
|
||
|
|
}
|
||
|
|
default:
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the characters used for indentation on the line to be matched
|
||
|
|
* @param {Object} tokens Locations of the opening bracket, closing bracket and last prop
|
||
|
|
* @param {String} expectedLocation Expected location for the closing bracket
|
||
|
|
* @param {Number} [correctColumn] Expected column for the closing bracket. Default to 0
|
||
|
|
* @return {String} The characters used for indentation
|
||
|
|
*/
|
||
|
|
function getIndentation(tokens, expectedLocation, correctColumn) {
|
||
|
|
const newColumn = correctColumn || 0;
|
||
|
|
let indentation;
|
||
|
|
let spaces = [];
|
||
|
|
switch (expectedLocation) {
|
||
|
|
case 'props-aligned':
|
||
|
|
indentation = /^\s*/.exec(context.getSourceCode().lines[tokens.lastProp.firstLine - 1])[0];
|
||
|
|
break;
|
||
|
|
case 'tag-aligned':
|
||
|
|
case 'line-aligned':
|
||
|
|
indentation = /^\s*/.exec(context.getSourceCode().lines[tokens.opening.line - 1])[0];
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
indentation = '';
|
||
|
|
}
|
||
|
|
if (indentation.length + 1 < newColumn) {
|
||
|
|
// Non-whitespace characters were included in the column offset
|
||
|
|
spaces = new Array(+correctColumn + 1 - indentation.length);
|
||
|
|
}
|
||
|
|
return indentation + spaces.join(' ');
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get the locations of the opening bracket, closing bracket, last prop, and
|
||
|
|
* start of opening line.
|
||
|
|
* @param {ASTNode} node The node to check
|
||
|
|
* @return {Object} Locations of the opening bracket, closing bracket, last
|
||
|
|
* prop and start of opening line.
|
||
|
|
*/
|
||
|
|
function getTokensLocations(node) {
|
||
|
|
const sourceCode = context.getSourceCode();
|
||
|
|
const opening = sourceCode.getFirstToken(node).loc.start;
|
||
|
|
const closing = sourceCode.getLastTokens(node, node.selfClosing ? 2 : 1)[0].loc.start;
|
||
|
|
const tag = sourceCode.getFirstToken(node.name).loc.start;
|
||
|
|
let lastProp;
|
||
|
|
if (node.attributes.length) {
|
||
|
|
lastProp = node.attributes[node.attributes.length - 1];
|
||
|
|
lastProp = {
|
||
|
|
column: sourceCode.getFirstToken(lastProp).loc.start.column,
|
||
|
|
firstLine: sourceCode.getFirstToken(lastProp).loc.start.line,
|
||
|
|
lastLine: sourceCode.getLastToken(lastProp).loc.end.line,
|
||
|
|
};
|
||
|
|
}
|
||
|
|
const openingLine = sourceCode.lines[opening.line - 1];
|
||
|
|
const closingLine = sourceCode.lines[closing.line - 1];
|
||
|
|
const isTab = {
|
||
|
|
openTab: /^\t/.test(openingLine),
|
||
|
|
closeTab: /^\t/.test(closingLine),
|
||
|
|
};
|
||
|
|
const openingStartOfLine = {
|
||
|
|
column: /^\s*/.exec(openingLine)[0].length,
|
||
|
|
line: opening.line,
|
||
|
|
};
|
||
|
|
return {
|
||
|
|
isTab,
|
||
|
|
tag,
|
||
|
|
opening,
|
||
|
|
closing,
|
||
|
|
lastProp,
|
||
|
|
selfClosing: node.selfClosing,
|
||
|
|
openingStartOfLine,
|
||
|
|
};
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Get an unique ID for a given JSXOpeningElement
|
||
|
|
*
|
||
|
|
* @param {ASTNode} node The AST node being checked.
|
||
|
|
* @returns {String} Unique ID (based on its range)
|
||
|
|
*/
|
||
|
|
function getOpeningElementId(node) {
|
||
|
|
return node.range.join(':');
|
||
|
|
}
|
||
|
|
|
||
|
|
const lastAttributeNode = {};
|
||
|
|
|
||
|
|
return {
|
||
|
|
JSXAttribute(node) {
|
||
|
|
lastAttributeNode[getOpeningElementId(node.parent)] = node;
|
||
|
|
},
|
||
|
|
|
||
|
|
JSXSpreadAttribute(node) {
|
||
|
|
lastAttributeNode[getOpeningElementId(node.parent)] = node;
|
||
|
|
},
|
||
|
|
|
||
|
|
'JSXOpeningElement:exit'(node) {
|
||
|
|
const attributeNode = lastAttributeNode[getOpeningElementId(node)];
|
||
|
|
const cachedLastAttributeEndPos = attributeNode ? attributeNode.range[1] : null;
|
||
|
|
|
||
|
|
let expectedNextLine;
|
||
|
|
const tokens = getTokensLocations(node);
|
||
|
|
const expectedLocation = getExpectedLocation(tokens);
|
||
|
|
let usingSameIndentation = true;
|
||
|
|
|
||
|
|
if (expectedLocation === 'tag-aligned') {
|
||
|
|
usingSameIndentation = tokens.isTab.openTab === tokens.isTab.closeTab;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (hasCorrectLocation(tokens, expectedLocation) && usingSameIndentation) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
const data = { location: MESSAGE_LOCATION[expectedLocation] };
|
||
|
|
const correctColumn = getCorrectColumn(tokens, expectedLocation);
|
||
|
|
|
||
|
|
if (correctColumn !== null) {
|
||
|
|
expectedNextLine = tokens.lastProp
|
||
|
|
&& (tokens.lastProp.lastLine === tokens.closing.line);
|
||
|
|
data.details = ` (expected column ${correctColumn + 1}${expectedNextLine ? ' on the next line)' : ')'}`;
|
||
|
|
}
|
||
|
|
|
||
|
|
report(context, messages.bracketLocation, 'bracketLocation', {
|
||
|
|
node,
|
||
|
|
loc: tokens.closing,
|
||
|
|
data,
|
||
|
|
fix(fixer) {
|
||
|
|
const closingTag = tokens.selfClosing ? '/>' : '>';
|
||
|
|
switch (expectedLocation) {
|
||
|
|
case 'after-tag':
|
||
|
|
if (cachedLastAttributeEndPos) {
|
||
|
|
return fixer.replaceTextRange([cachedLastAttributeEndPos, node.range[1]],
|
||
|
|
(expectedNextLine ? '\n' : '') + closingTag);
|
||
|
|
}
|
||
|
|
return fixer.replaceTextRange([node.name.range[1], node.range[1]],
|
||
|
|
(expectedNextLine ? '\n' : ' ') + closingTag);
|
||
|
|
case 'after-props':
|
||
|
|
return fixer.replaceTextRange([cachedLastAttributeEndPos, node.range[1]],
|
||
|
|
(expectedNextLine ? '\n' : '') + closingTag);
|
||
|
|
case 'props-aligned':
|
||
|
|
case 'tag-aligned':
|
||
|
|
case 'line-aligned':
|
||
|
|
return fixer.replaceTextRange([cachedLastAttributeEndPos, node.range[1]],
|
||
|
|
`\n${getIndentation(tokens, expectedLocation, correctColumn)}${closingTag}`);
|
||
|
|
default:
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
},
|
||
|
|
});
|
||
|
|
},
|
||
|
|
};
|
||
|
|
},
|
||
|
|
};
|