86 lines
2.7 KiB
Plaintext
86 lines
2.7 KiB
Plaintext
'use strict';
|
|
|
|
var utils = require('../utils.js');
|
|
require('eslint-visitor-keys');
|
|
require('espree');
|
|
require('estraverse');
|
|
|
|
var switchColonSpacing = utils.createRule({
|
|
name: "switch-colon-spacing",
|
|
package: "js",
|
|
meta: {
|
|
type: "layout",
|
|
docs: {
|
|
description: "Enforce spacing around colons of switch statements"
|
|
},
|
|
schema: [
|
|
{
|
|
type: "object",
|
|
properties: {
|
|
before: { type: "boolean", default: false },
|
|
after: { type: "boolean", default: true }
|
|
},
|
|
additionalProperties: false
|
|
}
|
|
],
|
|
fixable: "whitespace",
|
|
messages: {
|
|
expectedBefore: "Expected space(s) before this colon.",
|
|
expectedAfter: "Expected space(s) after this colon.",
|
|
unexpectedBefore: "Unexpected space(s) before this colon.",
|
|
unexpectedAfter: "Unexpected space(s) after this colon."
|
|
}
|
|
},
|
|
create(context) {
|
|
const sourceCode = context.sourceCode;
|
|
const options = context.options[0] || {};
|
|
const beforeSpacing = options.before === true;
|
|
const afterSpacing = options.after !== false;
|
|
function isValidSpacing(left, right, expected) {
|
|
return utils.isClosingBraceToken(right) || !utils.isTokenOnSameLine(left, right) || sourceCode.isSpaceBetweenTokens(left, right) === expected;
|
|
}
|
|
function commentsExistBetween(left, right) {
|
|
return sourceCode.getFirstTokenBetween(
|
|
left,
|
|
right,
|
|
{
|
|
includeComments: true,
|
|
filter: utils.isCommentToken
|
|
}
|
|
) !== null;
|
|
}
|
|
function fix(fixer, left, right, spacing) {
|
|
if (commentsExistBetween(left, right))
|
|
return null;
|
|
if (spacing)
|
|
return fixer.insertTextAfter(left, " ");
|
|
return fixer.removeRange([left.range[1], right.range[0]]);
|
|
}
|
|
return {
|
|
SwitchCase(node) {
|
|
const colonToken = utils.getSwitchCaseColonToken(node, sourceCode);
|
|
const beforeToken = sourceCode.getTokenBefore(colonToken);
|
|
const afterToken = sourceCode.getTokenAfter(colonToken);
|
|
if (!isValidSpacing(beforeToken, colonToken, beforeSpacing)) {
|
|
context.report({
|
|
node,
|
|
loc: colonToken.loc,
|
|
messageId: beforeSpacing ? "expectedBefore" : "unexpectedBefore",
|
|
fix: (fixer) => fix(fixer, beforeToken, colonToken, beforeSpacing)
|
|
});
|
|
}
|
|
if (!isValidSpacing(colonToken, afterToken, afterSpacing)) {
|
|
context.report({
|
|
node,
|
|
loc: colonToken.loc,
|
|
messageId: afterSpacing ? "expectedAfter" : "unexpectedAfter",
|
|
fix: (fixer) => fix(fixer, colonToken, afterToken, afterSpacing)
|
|
});
|
|
}
|
|
}
|
|
};
|
|
}
|
|
});
|
|
|
|
module.exports = switchColonSpacing;
|