All files / src/compiler/phases/1-parse/read expression.js

95.12% Statements 39/41
87.5% Branches 7/8
100% Functions 1/1
94.73% Lines 36/38

Press n or j to go to the next uncovered block, b, p or k for the previous block.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 392x 2x 2x 2x 2x 2x 2x 2x 2x 11240x 11240x 11240x 11240x 11240x 11240x 25x 25x 11238x 11238x 11240x 12x 12x 12x 12x 12x     12x 12x 12x 11238x 11238x 11238x 11238x 11240x 2x 2x 11240x  
import { parse_expression_at } from '../acorn.js';
import { regex_whitespace } from '../../patterns.js';
import * as e from '../../../errors.js';
 
/**
 * @param {import('../index.js').Parser} parser
 * @returns {import('estree').Expression}
 */
export default function read_expression(parser) {
	try {
		const node = parse_expression_at(parser.template, parser.ts, parser.index);
 
		let num_parens = 0;
 
		for (let i = parser.index; i < /** @type {number} */ (node.start); i += 1) {
			if (parser.template[i] === '(') num_parens += 1;
		}
 
		let index = /** @type {number} */ (node.end);
		while (num_parens > 0) {
			const char = parser.template[index];
 
			if (char === ')') {
				num_parens -= 1;
			} else if (!regex_whitespace.test(char)) {
				e.expected_token(index, ')');
			}
 
			index += 1;
		}
 
		parser.index = index;
 
		return /** @type {import('estree').Expression} */ (node);
	} catch (err) {
		parser.acorn_error(err);
	}
}