[Webkit-unassigned] [Bug 177686] New: [IDL] Parameters of dictionary type cannot be optional unless they have required members

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=177686

            Bug ID: 177686
           Summary: [IDL] Parameters of dictionary type cannot be optional
                    unless they have required members
           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: cdumez at apple.com
                CC: cdumez at apple.com, darin at apple.com, sam at webkit.org

Parameters of dictionary type cannot be optional unless they have required members as per the Web IDL specification:
"""
If the type of an argument is a dictionary type or a union type that has a dictionary as one of its flattened member types, and that dictionary type and its ancestors have no required members, and the argument is either the final argument or is followed only by optional arguments, then the argument must be specified as optional. Such arguments are always considered to have a default value of an empty dictionary, unless otherwise specified.
"""

Our bindings generator should assert that this is always the case.

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