Bug 149406 – Fix warnings in IDLParser.pm

• Component: New Bugs
• Status: RESOLVED FIXED

[Csaba Osztrogonác]

There are many warnings come from IDLParser.pm because of using uninitialized value in regexps:

Use of uninitialized value $type in pattern match (m//) at /home/ossy/WebKit/Source/WebCore/bindings/scripts/IDLParser.pm line 303.
Use of uninitialized value $type in substitution (s///) at /home/ossy/WebKit/Source/WebCore/bindings/scripts/IDLParser.pm line 309.

[Csaba Osztrogonác]

Created attachment 261655 [details]
Patch

[Alex Christensen]

Comment on attachment 261655 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=261655&action=review

r=me with nit

> Source/WebCore/bindings/scripts/IDLParser.pm:311
> +   }

This needs another space of indentation.

[Csaba Osztrogonác]

(In reply to comment #2)
> Comment on attachment 261655 [details]
> Patch
> 
> View in context:
> https://bugs.webkit.org/attachment.cgi?id=261655&action=review
> 
> r=me with nit
> 
> > Source/WebCore/bindings/scripts/IDLParser.pm:311
> > +   }
> 
> This needs another space of indentation.

Good catch, I'll fix it before landing.

[Csaba Osztrogonác]

Committed r190111: <http://trac.webkit.org/changeset/190111>

[Chris Dumez]

Comment on attachment 261655 [details]
Patch

This looks like this may be papering over a real bug. How can an attribute or parameter not have a type?

[Chris Dumez]

It looks like the parser has trouble parsing:
[Unscopeable, RaisesException, Custom] void prepend((Node or DOMString)... nodes);
[Unscopeable, RaisesException, Custom] void append((Node or DOMString)... nodes);
in ParentNode.idl

and

[Unscopeable, RaisesException, Custom] void before((Node or DOMString)... nodes);
[Unscopeable, RaisesException, Custom] void after((Node or DOMString)... nodes);
[Unscopeable, RaisesException, Custom] void replaceWith((Node or DOMString)... nodes);
in ChildNode.idl

Likely the issue is that our parser does not support unions or variadic arguments.

Thankfully, even though the parser does not parse them properly, it does not cause problems because we use Custom bindings for these.

The proper fix would be to add support for these type of parameters to our IDL parser.

[Chris Dumez]

FYI, the problem is unions (Node or DOMString). Variadic parameters seem to be fine.

[Csaba Osztrogonác]

(In reply to comment #7)
> FYI, the problem is unions (Node or DOMString). Variadic parameters seem to
> be fine.

Could you file a new bug report for this issue?

[Alexey Proskuryakov]

*** Bug 147132 has been marked as a duplicate of this bug. ***