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[Bug 28065] New: WebIDL: Grammar for readonly requires 2 token lookahead in some cases

From: <bugzilla@jessica.w3.org>
Date: Fri, 20 Feb 2015 20:31:34 +0000
To: public-script-coord@w3.org
Message-ID: <bug-28065-3890@http.www.w3.org/Bugs/Public/>
https://www.w3.org/Bugs/Public/show_bug.cgi?id=28065

            Bug ID: 28065
           Summary: WebIDL: Grammar for readonly requires 2 token
                    lookahead in some cases
           Product: WebAppsWG
           Version: unspecified
          Hardware: PC
                OS: Windows NT
            Status: NEW
          Severity: normal
          Priority: P2
         Component: WebIDL
          Assignee: cam@mcc.id.au
          Reporter: kyle@nonpolynomial.com
        QA Contact: public-webapps-bugzilla@w3.org
                CC: mike@w3.org, public-script-coord@w3.org

Quoting bz from https://bugzilla.mozilla.org/show_bug.cgi?id=1123516:

So the issue here, as far as I can tell is that when we see the READONLY as our
first token it's not clear whether the stack should become "Inherit Readonly"
or just "Readonly", right?  In particular, that requires one more token of
lookahead: if we're looking at READONLY MAPLIKE then it needs to just become
"Readonly" but if we're looking at READONLY ATTRIBUTE it needs to become
"Inherit Readonly".

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