97 lines
2.8 KiB
Go
97 lines
2.8 KiB
Go
// Copyright 2021 github.com/gagliardetto
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// This file has been modified by github.com/gagliardetto
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//
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// Copyright 2020 dfuse Platform Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package serum
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import (
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"math/big"
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"github.com/gagliardetto/solana-go"
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"github.com/gagliardetto/solana-go/programs/token"
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)
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type MarketMeta struct {
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Address solana.PublicKey `json:"address"`
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Name string `json:"name"`
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Deprecated bool `json:"deprecated"`
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QuoteMint token.Mint
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BaseMint token.Mint
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MarketV2 MarketV2
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}
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func (m *MarketMeta) baseSplTokenMultiplier() *big.Int {
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return solana.DecimalsInBigInt(uint32(m.BaseMint.Decimals))
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}
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func (m *MarketMeta) quoteSplTokenMultiplier() *big.Int {
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return solana.DecimalsInBigInt(uint32(m.QuoteMint.Decimals))
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}
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func (m *MarketMeta) PriceLotsToNumber(price *big.Int) *big.Float {
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ratio := I().Mul(I().SetInt64(int64(m.MarketV2.QuoteLotSize)), m.baseSplTokenMultiplier())
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numerator := F().Mul(F().SetInt(price), F().SetInt(ratio))
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denomiator := F().Mul(F().SetFloat64(float64(m.MarketV2.BaseLotSize)), F().SetInt(m.quoteSplTokenMultiplier()))
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v := divideBnToNumber(numerator, denomiator)
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return v
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}
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func (m *MarketMeta) BaseSizeLotsToNumber(size *big.Int) *big.Float {
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numerator := I().Mul(size, I().SetInt64(int64(m.MarketV2.BaseLotSize)))
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denomiator := m.baseSplTokenMultiplier()
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return F().Quo(F().SetInt(numerator), F().SetInt(denomiator))
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}
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func (m *MarketMeta) PriceNumberToLots(price *big.Int) *big.Float {
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numerator := I().Mul(price, m.quoteSplTokenMultiplier())
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numerator = I().Mul(numerator, big.NewInt(int64(m.MarketV2.BaseLotSize)))
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denomiator := I().Mul(m.baseSplTokenMultiplier(), I().SetInt64(int64(m.MarketV2.QuoteLotSize)))
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return F().Quo(F().SetInt(numerator), F().SetInt(denomiator))
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}
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type OpenOrdersMeta struct {
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OpenOrders OpenOrders
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}
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type SideLayoutType string
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const (
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SideLayoutTypeUnknown SideLayoutType = "UNKNOWN"
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SideLayoutTypeBid SideLayoutType = "BID"
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SideLayoutTypeAsk SideLayoutType = "ASK"
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)
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type SideLayout uint32
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func (s SideLayout) getSide() SideLayoutType {
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switch s {
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case 0:
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return SideLayoutTypeBid
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case 1:
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return SideLayoutTypeAsk
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}
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return SideLayoutTypeUnknown
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}
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type OrderType uint32
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const (
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OrderTypeLimit = OrderType(iota)
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OrderTypeImmediateOrCancel
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OrderTypePostOnly
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)
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