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//
// Copyright 2020-2022 Sean C Foley
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
package ipaddr
// ExtendedIdentifierString is a common interface for strings that identify hosts, namely [IPAddressString], [MACAddressString], and [HostName].
type ExtendedIdentifierString interface {
HostIdentifierString
// GetAddress returns the identified address or nil if none.
GetAddress() AddressType
// ToAddress returns the identified address or an error.
ToAddress() (AddressType, error)
// Unwrap returns the wrapped IPAddressString, MACAddressString or HostName as an interface, HostIdentifierString.
Unwrap() HostIdentifierString
}
// WrappedIPAddressString wraps an IPAddressString to get an ExtendedIdentifierString, an extended polymorphic type.
type WrappedIPAddressString struct {
*IPAddressString
}
// Unwrap returns the wrapped IPAddressString as an interface, HostIdentifierString.
func (str WrappedIPAddressString) Unwrap() HostIdentifierString {
res := str.IPAddressString
if res == nil {
return nil
}
return res
}
// ToAddress returns the identified address or an error.
func (str WrappedIPAddressString) ToAddress() (AddressType, error) {
addr, err := str.IPAddressString.ToAddress()
if err != nil {
return nil, err
}
return addr, nil
}
// GetAddress returns the identified address or nil if none.
func (str WrappedIPAddressString) GetAddress() AddressType {
if addr := str.IPAddressString.GetAddress(); addr != nil {
return addr
}
return nil
}
// WrappedMACAddressString wraps a MACAddressString to get an ExtendedIdentifierString.
type WrappedMACAddressString struct {
*MACAddressString
}
// Unwrap returns the wrapped MACAddressString as an interface, HostIdentifierString.
func (str WrappedMACAddressString) Unwrap() HostIdentifierString {
res := str.MACAddressString
if res == nil {
return nil
}
return res
}
// ToAddress returns the identified address or an error.
func (str WrappedMACAddressString) ToAddress() (AddressType, error) {
addr, err := str.MACAddressString.ToAddress()
if err != nil {
return nil, err
}
return addr, nil
}
// GetAddress returns the identified address or nil if none.
func (str WrappedMACAddressString) GetAddress() AddressType {
if addr := str.MACAddressString.GetAddress(); addr != nil {
return addr
}
return nil
}
// WrappedHostName wraps a HostName to get an ExtendedIdentifierString.
type WrappedHostName struct {
*HostName
}
// Unwrap returns the wrapped HostName as an interface, HostIdentifierString.
func (host WrappedHostName) Unwrap() HostIdentifierString {
res := host.HostName
if res == nil {
return nil
}
return res
}
// ToAddress returns the identified address or an error.
func (host WrappedHostName) ToAddress() (AddressType, error) {
addr, err := host.HostName.ToAddress()
if err != nil {
return nil, err
}
return addr, nil
}
// GetAddress returns the identified address or nil if none.
func (host WrappedHostName) GetAddress() AddressType {
if addr := host.HostName.GetAddress(); addr != nil {
return addr
}
return nil
}
var (
_, _, _ ExtendedIdentifierString = WrappedIPAddressString{}, WrappedMACAddressString{}, WrappedHostName{}
)
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