objc

type Class interface {
	Object

	// AddMethod registers a Go function to be called whenever
	// an instance of the class receives a message for the given
	// selector.
	//
	// The AddMethod call only works for classes created with
	// objc.NewClass. Method calls will only be received by the
	// Go function if instances of the class are instanciated
	// by calling objc.NewGoInstance.
	AddMethod(selector string, fn interface{})
}

type Object interface {
	// SendMsg sends an arbitrary message to the method on the
	// object that is idenfieid by selectorName.
	SendMsg(selectorName string, args ...interface{}) Object

	// SendSuperMsg is like SendMsg, but sends to the object's
	// super class instead.
	SendSuperMsg(selectorName string, args ...interface{}) Object

	// Alloc sends the  "alloc" message to the object.
	Alloc() Object

	// Init sends the "init" message to the object.
	Init() Object

	// Retain sends the "retain" message to the object.
	Retain() Object

	// Release sends the "release" message to the object.
	Release() Object

	// AutoRelease sends the "autorelease" message to the object.
	AutoRelease() Object

	// Copy sends the "copy" message to the object.
	Copy() Object

	// String returns a string-representation of the object.
	// This is equivalent to sending the "description"
	// message to the object, except that this method
	// returns a Go string.
	String() string

	// Pointer returns the in-memory address of the object.
	Pointer() uintptr

	// Uint returns the value of the object as an uint64.
	Uint() uint64

	// Int returns the value of the object as an int64.
	Int() int64

	// Float returns the value of the object as a float64.
	Float() float64

	// Bool returns the value of the object as a bool.
	Bool() bool
}

type Selector interface {
	// Selector returns a string representation of
	// a selector.
	Selector() string

	// String returns the same string as Selector does.
	// It is only implemented to implement the Stringer
	// interface.
	String() string
}