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pegged_orders.go
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/
pegged_orders.go
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// Copyright (C) 2023 Gobalsky Labs Limited
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as
// published by the Free Software Foundation, either version 3 of the
// License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package matching
import "github.com/pkg/errors"
var ErrUnknownPeggedOrderID = errors.New("unknow pegged order")
type peggedOrders struct {
ids []string
}
func newPeggedOrders() *peggedOrders {
return &peggedOrders{
ids: []string{},
}
}
func (p *peggedOrders) Clear() {
p.ids = []string{}
}
func (p *peggedOrders) Add(id string) {
p.ids = append(p.ids, id)
}
func (p *peggedOrders) Delete(id string) error {
idx := -1
for i, v := range p.ids {
if v == id {
idx = i
break
}
}
if idx == -1 {
return ErrUnknownPeggedOrderID
}
if idx < len(p.ids)-1 {
copy(p.ids[idx:], p.ids[idx+1:])
}
p.ids[len(p.ids)-1] = ""
p.ids = p.ids[:len(p.ids)-1]
return nil
}
func (p *peggedOrders) Exists(id string) bool {
for _, v := range p.ids {
if v == id {
return true
}
}
return false
}
func (p *peggedOrders) Iter() []string {
return p.ids
}
func (p *peggedOrders) Len() int {
return len(p.ids)
}