[Webkit-unassigned] [Bug 189466] New: Add bindings support for representing attributes with JSValueInWrappedObject

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=189466

            Bug ID: 189466
           Summary: Add bindings support for representing attributes with
                    JSValueInWrappedObject
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Bindings
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: aestes at apple.com
                CC: cdumez at apple.com

In CustomEvent, History, MessageEvent, PaymentMethodChangeEvent, and PaymentResponse, we have custom bindings support for representing attributes of type object or any.

These custom bindings tend to do two things:

1. Add a custom getter for an attribute of type object or any that converts the native value to a JSValue, cache that JSValue in a JSValueInWrappedObject in the wrapper class, then return the cached JSValue.
2. Add a custom mark function that visits the cached JSValueInWrappedObject as well as any other JSValueInWrappedObjects in the wrapper class.

We should teach the bindings generator to do this for us for attributes of object or any type (perhaps with a custom annotation).

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