79 lines
2.3 KiB
Go
79 lines
2.3 KiB
Go
// Mgmt
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// Copyright (C) 2013-2017+ James Shubin and the project contributors
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// Written by James Shubin <james@shubin.ca> and the project contributors
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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package resources
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import (
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"fmt"
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"log"
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)
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// ResUID is a unique identifier for a resource, namely it's name, and the kind ("type").
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type ResUID interface {
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GetName() string
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GetKind() string
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fmt.Stringer // String() string
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IFF(ResUID) bool
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IsReversed() bool // true means this resource happens before the generator
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}
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// The BaseUID struct is used to provide a unique resource identifier.
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type BaseUID struct {
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Name string // name and kind are the values of where this is coming from
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Kind string
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Reversed *bool // piggyback edge information here
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}
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// GetName returns the name of the resource UID.
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func (obj *BaseUID) GetName() string {
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return obj.Name
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}
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// GetKind returns the kind of the resource UID.
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func (obj *BaseUID) GetKind() string {
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return obj.Kind
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}
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// String returns the canonical string representation for a resource UID.
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func (obj *BaseUID) String() string {
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return fmt.Sprintf("%s[%s]", obj.GetKind(), obj.GetName())
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}
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// IFF looks at two UID's and if and only if they are equivalent, returns true.
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// If they are not equivalent, it returns false.
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// Most resources will want to override this method, since it does the important
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// work of actually discerning if two resources are identical in function.
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func (obj *BaseUID) IFF(uid ResUID) bool {
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res, ok := uid.(*BaseUID)
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if !ok {
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return false
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}
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return obj.Name == res.Name
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}
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// IsReversed is part of the ResUID interface, and true means this resource
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// happens before the generator.
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func (obj *BaseUID) IsReversed() bool {
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if obj.Reversed == nil {
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log.Fatal("Programming error!")
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}
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return *obj.Reversed
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}
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