[Webkit-unassigned] [Bug 103703] New: Align the grid track code with the specification's production rules

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=103703

           Summary: Align the grid track code with the specification's
                    production rules
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: jchaffraix at webkit.org
                CC: tony at chromium.org, xan.lopez at gmail.com,
                    ojan at chromium.org
            Blocks: 103311


Currently our parsing, style resolution and computed style implementation of grid-definition-{row|column} are pretty flat. The specification defines 4 production rules:

<track-list>    => [ [ <string> ]* <track-group> [ <string> ]* ]+ | none
<track-group>   => <track-minmax> | [ repeat( <positive-integer> , [ [ <string> ]* <track-minmax> [ <string> ]* ]+ ) ]
<track-minmax>  => minmax( <track-breadth> , <track-breadth> ) | auto | <track-breadth>
<track-breadth> => <length> | <percentage> | <fraction> | min-content | max-content

Aligning our implementation with that would make the code more readable and would be easier to add support for more of the syntax (minmax being my goal).

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