}

// expect verifies that the next item has the expected type. It does not consume it.
func (p *Parser) expect(expectedToken lex.ScanToken, expectedMessage string) {
	if p.peek() != expectedToken {
		p.errorf("expected %s, found %s", expectedMessage, p.next())
	}
}

// have reports whether the remaining tokens (including the current one) contain the specified token.