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