//
// Do not remove or change the type signature.
// See go.dev/issue/67401
// and go.dev/issue/67279.

// ifaceIndir reports whether t is stored indirectly in an interface value.
// It is no longer used by this package and is here entirely for the
// linkname uses.
//
//go:linkname unusedIfaceIndir reflect.ifaceIndir
func unusedIfaceIndir(t *abi.Type) bool {
	return t.Kind_&abi.KindDirectIface == 0
}

//go:linkname valueInterface

	// This repeats typ.Kind() except for method values.
	// The remaining 23+ bits give a method number for method values.
	// If flag.kind() != Func, code can assume that flagMethod is unset.
	// If ifaceIndir(typ), code can assume that flagIndir is set.
	flag

	// A method value represents a curried method invocation
	// like r.Read for some receiver r. The typ+val+flag bits describe

// The returned value is neither addressable nor settable.
func Zero(typ Type) Value {
	if typ == nil {
		panic("reflect: Zero(nil)")
	}
	t := typ.common()
	fl := flag(t.Kind())
	if t.IfaceIndir() {
		return Value{t, unsafe_New(t), fl | flagIndir}
	}
	return Value{t, nil, fl}
}

// ToInterface returns v's current value as an interface{}.
// It is equivalent to:
//

	//	- flagIndir: val holds a pointer to the data
	//	- flagAddr: v.CanAddr is true (implies flagIndir and ptr is non-nil)
	//	- flagMethod: v is a method value.
	// If ifaceIndir(typ), code can assume that flagIndir is set.
	//
	// The remaining 22+ bits give a method number for method values.
	// If flag.kind() != Func, code can assume that flagMethod is unset.
	flag

	return t.TFlag&TFlagNamed != 0
}

// Pointers reports whether t contains pointers.
func (t *Type) Pointers() bool { return t.PtrBytes != 0 }

// IfaceIndir reports whether t is stored indirectly in an interface value.
func (t *Type) IfaceIndir() bool {
	return t.Kind_&KindDirectIface == 0
}

// isDirectIface reports whether t is stored directly in an interface value.
func (t *Type) IsDirectIface() bool {

// Returns true if the receiver is a pointer.
func (a *abiSeq) addRcvr(rcvr *abi.Type) (*abiStep, bool) {
	// The receiver is always one word.
	a.valueStart = append(a.valueStart, len(a.steps))
	var ok, ptr bool
	if rcvr.IfaceIndir() || rcvr.Pointers() {
		ok = a.assignIntN(0, goarch.PtrSize, 1, 0b1)
		ptr = true
	} else {
		// TODO(mknyszek): Is this case even possible?
		// The interface data work never contains a non-pointer

				qi := add(q, ft.Offset, "&x.field safe")
				if !ft.Typ.Equal(pi, qi) {
					return false
				}
			}
			return true
		}
	}

	switch {
	case len(fs) == 1 && !fs[0].Typ.IfaceIndir():
		// structs of 1 direct iface type can be direct
		typ.Kind_ |= abi.KindDirectIface
	default:
		typ.Kind_ &^= abi.KindDirectIface
	}

	return addToCache(toType(&typ.Type))
}