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OS: Ubuntu Linux 14.04 LTS in VirtualBox
Host: Windows 8
Rakudo version: git pull from 25/3/2015
Issue 1: Are we missing the line:
------> token TOP { <term>⏏ % \n }
in the error message?
Issue 2: Should the quantifier be required?
Assume you're debugging this grammar fragment: " token top-level {
<list>* % \, } token list { [ <list> | <term> ]* % \, } " - A fairly
simple (albeit left-recursive) fragment of a common grammar pattern.
If you're allowed to temporarily delete the quantifiers, $/<top-level>
is an array reference to a single $/<list> match, and your actions get
what they're expecting, an array.
If you're not allowed to delete the quantifiers, you get " token
top-level { <list> } token list { [ <list> | <term> ] } " and
$/<top-level> is simply a $/<list>, and not $/<top-level>[0] as your
actions expect. So you have to change the actions as well.
Error:
--cut here--
perl6 ~/bug.t
===SORRY!=== Error while compiling /home/jgoff/bug.t
Missing quantifier on the left argument of %
at /home/jgoff/bug.t:3
--cut here--
--cut here--
grammar Bug {
token term { a }
token TOP { <term> % \n }
}
Bug.parse( 'a' );
--cut here--
