// MIT License
//
// Copyright (c) 2017 Wesley Wickwire
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all
// copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
// SOFTWARE.

// Swift class or objc class
struct AnyClassMetadataLayout {
    var _kind: Int // isaPointer for classes
    var superClass: Any.Type
    var objCRuntimeReserve: (Int, Int)
    var rodataPointer: Int
    
    var isSwiftClass: Bool {
        return (rodataPointer & classIsSwiftMask()) != 0
    }
}

struct ClassMetadataLayout: NominalMetadataLayoutType {
    var _kind: Int // isaPointer for classes
    var superClass: Any.Type
    #if !os(WASI)
    var objCRuntimeReserve: (Int, Int)
    var rodataPointer: Int
    #endif
    var classFlags: Int32
    var instanceAddressPoint: UInt32
    var instanceSize: UInt32
    var instanceAlignmentMask: UInt16
    var reserved: UInt16
    var classSize: UInt32
    var classAddressPoint: UInt32
    var typeDescriptor: UnsafeMutablePointer<ClassTypeDescriptor>
    var iVarDestroyer: UnsafeRawPointer
}
