You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
41 lines
946 B
41 lines
946 B
'use strict'; |
|
|
|
const crypto = require('crypto'); |
|
const moduleRequire = require('eslint-module-utils/module-require').default; |
|
const hashObject = require('eslint-module-utils/hash').hashObject; |
|
|
|
const cache = new Map(); |
|
|
|
// must match ESLint default options or we'll miss the cache every time |
|
const parserOptions = { |
|
loc: true, |
|
range: true, |
|
raw: true, |
|
tokens: true, |
|
comment: true, |
|
attachComment: true, |
|
}; |
|
|
|
exports.parse = function parse(content, options) { |
|
options = Object.assign({}, options, parserOptions); |
|
|
|
if (!options.filePath) { |
|
throw new Error('no file path provided!'); |
|
} |
|
|
|
const keyHash = crypto.createHash('sha256'); |
|
keyHash.update(content); |
|
hashObject(options, keyHash); |
|
|
|
const key = keyHash.digest('hex'); |
|
|
|
let ast = cache.get(key); |
|
if (ast != null) return ast; |
|
|
|
const realParser = moduleRequire(options.parser); |
|
|
|
ast = realParser.parse(content, options); |
|
cache.set(key, ast); |
|
|
|
return ast; |
|
};
|
|
|