[metaas-dev] parser: super.method() fails

[Ralf Bokelberg]

Hi Dave

i wanted to write a formatter. The formatter should read in any
ActionScript and output it as nicely indented and formatted.
Since i don't know about antlr very much, i started to write parser
manually now.

Cheers
Ralf.

On Thu, Mar 27, 2008 at 9:09 AM, David Holroyd
<dave at badgers-in-foil.co.uk> wrote:
> Hi!
>
>
>  On Wed, Mar 26, 2008 at 10:31:48AM +0100, Ralf Bokelberg wrote:
>  > When i tried to import a file, which contains a ActionScript statement
>  > like super.method(1,2,3), parsing failed with an error. It seems like
>  > it expects super to be a method name and not an object. Generally i
>  > wonder, why super handling is part of the grammar. Shouldn't this be
>  > part of a later stage?
>
>  Well, the spec says that 'super' is a keyword with special significance
>  in the grammar,
>
>   http://livedocs.adobe.com/specs/actionscript/3/as3_specification129.html
>
>  This prevents use of 'super' in contexts where identifiers would
>  otherwise be allowed, like,
>
>   foo.super.bar.method(1,2,3);   or   var super = 1;
>
>  Currently, metaas only supports 'super' in a super-statement,
>
>   http://livedocs.adobe.com/specs/actionscript/3/as3_specification152.html
>
>  When implementing that, I couldn't get the super-expression to work due
>  to ambiguity problems in the resulting ANTLR grammar.  Sorry!
>
>  I know I need to make further efforts to get that working.  (Do you
>  fancy fiddling with the grammar definition? ;)
>
>  Will this cause big problems for your intended application?
>
>
>  ta,
>  dave
>
>  --
>  http://david.holroyd.me.uk/
>
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>



-- 
Ralf Bokelberg <ralf.bokelberg at gmail.com>
Flex & Flash Consultant based in Cologne/Germany