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cache.go
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cache.go
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// Copyright (c) 2022 Gobalsky Labs Limited
//
// Use of this software is governed by the Business Source License included
// in the LICENSE.VEGA file and at https://www.mariadb.com/bsl11.
//
// Change Date: 18 months from the later of the date of the first publicly
// available Distribution of this version of the repository, and 25 June 2022.
//
// On the date above, in accordance with the Business Source License, use
// of this software will be governed by version 3 or later of the GNU General
// Public License.
package matching
import (
"code.vegaprotocol.io/vega/core/types"
"code.vegaprotocol.io/vega/libs/num"
)
type BookCache struct {
indicativePrice cachedUint
indicativeVolume cachedUint64
indicativeUncrossingSide cachedSide
}
func NewBookCache() BookCache {
return BookCache{
indicativePrice: cachedUint{
value: num.UintZero(),
},
}
}
type cachedUint struct {
valid bool
value *num.Uint
}
type cachedUint64 struct {
valid bool
value uint64
}
type cachedSide struct {
valid bool
value types.Side
}
func (c *cachedUint) Set(u *num.Uint) {
c.value = u
c.valid = true
}
func (c *cachedUint) Invalidate() {
c.valid = false
}
func (c *cachedUint) Get() (*num.Uint, bool) {
return c.value.Clone(), c.valid
}
func (c *cachedUint64) Set(u uint64) {
c.value = u
c.valid = true
}
func (c *cachedUint64) Invalidate() {
c.valid = false
}
func (c *cachedUint64) Get() (uint64, bool) {
return c.value, c.valid
}
func (c *cachedSide) Set(s types.Side) {
c.value = s
c.valid = true
}
func (c *cachedSide) Invalidate() {
c.valid = false
}
func (c *cachedSide) Get() (types.Side, bool) {
return c.value, c.valid
}
func (c *BookCache) Invalidate() {
c.indicativePrice.Invalidate()
c.indicativeVolume.Invalidate()
c.indicativeUncrossingSide.Invalidate()
}
func (c *BookCache) SetIndicativePrice(v *num.Uint) {
c.indicativePrice.Set(v)
}
func (c *BookCache) GetIndicativePrice() (*num.Uint, bool) {
return c.indicativePrice.Get()
}
func (c *BookCache) SetIndicativeVolume(v uint64) {
c.indicativeVolume.Set(v)
}
func (c *BookCache) GetIndicativeVolume() (uint64, bool) {
return c.indicativeVolume.Get()
}
func (c *BookCache) SetIndicativeUncrossingSide(s types.Side) {
c.indicativeUncrossingSide.Set(s)
}
func (c *BookCache) GetIndicativeUncrossingSide() (types.Side, bool) {
return c.indicativeUncrossingSide.Get()
}