Goals

• Remove all non-wrapping or GC related custom bindings
• Add support for all WebIDL features
• Improve the quality of the perl IDL code generators
• Use IDL infrastructure to add automatic test case generation
• Reduce the code size of the generated code.
• Reduce the compile time of the generated code.
• Provide the fastest bindings layer possible.

Tasks:

• Add support for WebIDL namespaces
• Add support for setlike<> declarations
• Add support for Promise<> attributes
• Remove special casing of RegExp from overloading
• Stop invoking GetMethod(V, @@iterator) twice for sequence/FrozenArray disambiguation in overloading
• Implement / verify FrozenArray reference semantics without [CachedAttribute]
• Add support for [SameObject] (unclear if there is anything to do here. SameObject is probably something that is implemented in the implementation via returning the same object).
• Add support for the remaining steps in the union conversion code
• Add better exception messages for all conversions
• Replace use of __is_polymorphic with std::is_polymorphic
• Add support for making an attribute conditionally readonly at compile time (see JSAudioTrackCustom) (​https://webkit.org/b/173993)
• Replace use of RuntimeEnabledFeatures with Settings based conditionals
• Add support for conditionally exposing functions / attributes based on [Exposed] extended attribute (see NavigatorID.idl and XMLHttpRequest.idl for examples)
• Replace explicit conversion from Identifier to String or AtomicString (see uses of propertyNameToString/propertyNameToAtomicString in the generator) with a class that can convert most efficiently based on the type of the receiver.
• Replace explicit conversion from JSString to AtomicString via the [AtomicString] and [ExistingAtomicString] type modifiers with a class that can convert most efficiently based on the type of the receiver.

DOMJIT Specific Tasks:

• Utilize DOMJIT to hoist attribute and operation prologues into JSC (​https://webkit.org/b/171637)
• Attempt to reduce duplications by having 'safe' bindings functions call the 'unsafe' ones where possible.

Specific issues

• Make ScheduledAction into a regular callback

Maybe:

• Generate the structs that correspond to IDL dictionaries
• Generate the enums that correspond to IDL enums
• Generate the abstract base classes that correspond to IDL callbacks
• Replace trampoline/body model with trampoline/lambda.

Done:

• Add support for generating name getters / setters / deleters
• Add support for generating index getters / setters with custom names
• Add support for maplike<> declarations
• Add support for callbacks with non-void return types
• Add support for BufferType specialization in IDLTypes (currently implemented as IDLInterfaces)
• Stop invoking GetMethod(V, @@iterator) twice for sequence/FrozenArray disambiguation in union conversion
• Remove special casing of enums by passing context (attribute assignment, function parameter, dictionary assignment) to conversion functions
• Move all exception helpers out of JSDOMBindings.h and into its own header
• Split JSDOMConvert up into separate files per type
• Add extended attribute for marking an argument to an operation as also being the return value (needed for Crypto.getRandomValues, Node.insertBefore, Node.replaceChild, Node.removeChild, and Node.appendChild) (​https://webkit.org/b/173961)