73 lines
2.5 KiB
Go
73 lines
2.5 KiB
Go
// Mgmt
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// Copyright (C) 2013-2024+ 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 <https://www.gnu.org/licenses/>.
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//
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// Additional permission under GNU GPL version 3 section 7
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//
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// If you modify this program, or any covered work, by linking or combining it
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// with embedded mcl code and modules (and that the embedded mcl code and
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// modules which link with this program, contain a copy of their source code in
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// the authoritative form) containing parts covered by the terms of any other
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// license, the licensors of this program grant you additional permission to
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// convey the resulting work. Furthermore, the licensors of this program grant
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// the original author, James Shubin, additional permission to update this
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// additional permission if he deems it necessary to achieve the goals of this
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// additional permission.
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package engine
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import (
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"fmt"
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)
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// Edge is a struct that represents a graph's edge.
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type Edge struct {
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Name string
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Notify bool // should we send a refresh notification along this edge?
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refresh bool // is there a notify pending for the dest vertex ?
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}
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// String is a required method of the Edge interface that we must fulfill.
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func (obj *Edge) String() string {
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return obj.Name
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}
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// Cmp compares this edge to another. It returns nil if they are equivalent.
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func (obj *Edge) Cmp(edge *Edge) error {
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if obj.Name != edge.Name {
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return fmt.Errorf("edge names differ")
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}
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if obj.Notify != edge.Notify {
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return fmt.Errorf("notify values differ")
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}
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// FIXME: should we compare this as well?
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//if obj.refresh != edge.refresh {
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// return fmt.Errorf("refresh values differ")
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//}
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return nil
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}
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// Refresh returns the pending refresh status of this edge.
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func (obj *Edge) Refresh() bool {
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return obj.refresh
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}
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// SetRefresh sets the pending refresh status of this edge.
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func (obj *Edge) SetRefresh(b bool) {
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obj.refresh = b
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}
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