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[Bug 14916] New: WebIDL has no function type

From: <bugzilla@jessica.w3.org>
Date: Wed, 23 Nov 2011 18:53:58 +0000
To: public-script-coord@w3.org
Message-ID: <bug-14916-3890@http.www.w3.org/Bugs/Public/>
http://www.w3.org/Bugs/Public/show_bug.cgi?id=14916

           Summary: WebIDL has no function type
           Product: WebAppsWG
           Version: unspecified
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: normal
          Priority: P2
         Component: WebIDL
        AssignedTo: cam@mcc.id.au
        ReportedBy: ayg@aryeh.name
         QAContact: member-webapi-cvs@w3.org
                CC: mike@w3.org, public-script-coord@w3.org


HTML has tons of IDL attributes like

  [TreatNonCallableAsNull] attribute Function? onabort;

Function is actually an interface it defines:

  http://www.whatwg.org/specs/web-apps/current-work/#function

This is very weird, and probably contradicts ES in some details (like whether
the .call property of the prototype is configurable).  It would make more sense
for WebIDL to have a dedicated function type.  The algorithm for converting to
a function should probably return null if the thing passed in isn't callable,
so the above could become just

  attribute function? onabort;

since every single usage of Function? in HTML seems to use
[TreatNonCallableAsNull], so it may as well just be the behavior all the time.

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Received on Wednesday, 23 November 2011 18:54:07 UTC

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