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/**
* @fileoverview ESLint Parser
* @author Nicholas C. Zakas
*/
/* eslint class-methods-use-this: off -- Anticipate future constructor arguments. */
"use strict";
//-----------------------------------------------------------------------------
// Types
//-----------------------------------------------------------------------------
/** @typedef {import("../linter/vfile.js").VFile} VFile */
/** @typedef {import("@eslint/core").Language} Language */
/** @typedef {import("@eslint/core").LanguageOptions} LanguageOptions */
//-----------------------------------------------------------------------------
// Exports
//-----------------------------------------------------------------------------
/**
* The parser for ESLint.
*/
class ParserService {
/**
* Parses the given file synchronously.
* @param {VFile} file The file to parse.
* @param {{language:Language,languageOptions:LanguageOptions}} config The configuration to use.
* @returns {Object} An object with the parsed source code or errors.
* @throws {Error} If the parser returns a promise.
*/
parseSync(file, config) {
const { language, languageOptions } = config;
const result = language.parse(file, { languageOptions });
if (typeof result.then === "function") {
throw new Error("Unsupported: Language parser returned a promise.");
}
if (result.ok) {
return {
ok: true,
sourceCode: language.createSourceCode(file, result, { languageOptions })
};
}
// if we made it to here there was an error
return {
ok: false,
errors: result.errors.map(error => ({
ruleId: null,
nodeType: null,
fatal: true,
severity: 2,
message: `Parsing error: ${error.message}`,
line: error.line,
column: error.column
}))
};
}
}
module.exports = { ParserService };