parseAstro.ts — astro Source File

Source Code

import { parse } from '@astrojs/compiler/sync';
import type { ParseOptions, ParseResult, Point } from '@astrojs/compiler/types';
import type { LSPTSXRanges } from './astro2tsx.js';

export type AstroMetadata = ParseResult & {
	frontmatter: FrontmatterStatus;
	tsxRanges: LSPTSXRanges;
};

export function getAstroMetadata(
	fileName: string,
	input: string,
	options: ParseOptions = { position: true },
): Omit<AstroMetadata, 'tsxRanges'> {
	const parseResult = safeParseAst(fileName, input, options);

	return {
		...parseResult,
		frontmatter: getFrontmatterStatus(parseResult.ast, input),
	};
}

function safeParseAst(fileName: string, input: string, parseOptions: ParseOptions): ParseResult {
	try {
		const parseResult = parse(input, parseOptions);
		return parseResult;
	} catch (e) {
		console.error(
			`There was an error parsing ${fileName}'s AST. An empty AST will be returned instead to avoid breaking the server. Please create an issue: https://github.com/withastro/astro/issues\nError: ${e}.`,
		);

		return {
			ast: {
				type: 'root',
				children: [],
			},
			diagnostics: [
				{
					code: 1000,
					location: {
						file: fileName,
						line: 1,
						column: 1,
						length: input.length,
					},
					severity: 1,
					text: `The Astro compiler encountered an unknown error while parsing this file's AST. Please create an issue with your code and the error shown in the server's logs: https://github.com/withastro/astro/issues`,
				},
			],
		};
	}
}

interface FrontmatterOpen {
	status: 'open';
	position: {
		start: Point;
		end: undefined;
	};
}
// ... (65 more lines)