[Webkit-unassigned] [Bug 136773] New: [Meta] Type cast by using toFoo()

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=136773

           Summary: [Meta] Type cast by using toFoo()
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit Misc.
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: gyuyoung.kim at webkit.org


As I announced in https://lists.webkit.org/pipermail/webkit-dev/2013-September/025532.html, this bug is to track bugs which changes to use toFoo() instead of static_cast<>.

To use toFoo() for type casting, there are below benefits,

 - Bad type cast can be detected by using ASSERTION in toFoo(). The
toFoo() function has an ASSERTION to check if source value is a proper
super class.
 - Unnecessary local variables can be removed. There are some local
variables, which are only used once in WebKit. In those cases, we don’t
need to use a local variable. Besides, we can remove unnecessary ASSERTION
because toFoo() already has it.
 - I believe toFoo() can improve code readability.

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