Parsica Laravel Package

title: Order matters sidebar_label: Order matters

The order of clauses in an or() matters. If we do the following parser definition, the parser will consume "http", even if the strings starts with "https", leaving "s://..." as the remainder.

<?php
$parser = string('http')->or(string('https'));
$input = "https://parsica.verraes.net";
$result = $parser->tryString($input);
assertEquals("http", $result->output());
assertEquals("s://parsica.verraes.net", $result->remainder());

The solution is to consider the order of or clauses:

<?php
$parser = string('https')->or(string('http'));
$input = "https://parsica.verraes.net";
$result = $parser->tryString($input);
assertEquals("https", $result->output());
assertEquals("://parsica.verraes.net", $result->remainder());