JSObject.swift

import _CJavaScriptKit

@dynamicMemberLookup
public class JSObjectRef: Equatable {
    internal var id: UInt32
    init(id: UInt32) {
        self.id = id
    }

    @_disfavoredOverload
    public subscript(dynamicMember name: String) -> ((JSValueConvertible...) -> JSValue)? {
        guard let function = self[dynamicMember: name].function else { return nil }
        return { (arguments: JSValueConvertible...) in
            function.apply(this: self, argumentList: arguments)
        }
    }

    public subscript(dynamicMember name: String) -> JSValue {
        get { get(name) }
        set { set(name, newValue) }
    }

    public func get(_ name: String) -> JSValue {
        getJSValue(this: self, name: name)
    }

    public func set(_ name: String, _ value: JSValue) {
        setJSValue(this: self, name: name, value: value)
    }

    public func get(_ index: Int) -> JSValue {
        getJSValue(this: self, index: Int32(index))
    }

    public func instanceof(_ constructor: JSValue) -> Bool {
        guard let `func` = constructor.function else { return false }
        return instanceof(`func`)
    }

    public func instanceof(_ constructor: JSFunctionRef) -> Bool {
        _instanceof(self.id, constructor.id)
    }

    public subscript(_ index: Int) -> JSValue {
        get { get(index) }
        set { set(index, newValue) }
    }

    public func set(_ index: Int, _ value: JSValue) {
        setJSValue(this: self, index: Int32(index), value: value)
    }

    static let _JS_Predef_Value_Global: UInt32 = 0
    public static let global = JSObjectRef(id: _JS_Predef_Value_Global)

    deinit { _destroy_ref(id) }

    public static func == (lhs: JSObjectRef, rhs: JSObjectRef) -> Bool {
        return lhs.id == rhs.id
    }

    public func jsValue() -> JSValue {
        .object(self)
    }
}