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pair_id.go
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pair_id.go
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package types
import (
"fmt"
"strings"
sdkerrors "cosmossdk.io/errors"
)
func NewPairID(token0, token1 string) (*PairID, error) {
if token0 == token1 {
return nil, sdkerrors.Wrapf(ErrInvalidTradingPair, "%s<>%s", token0, token1)
}
return &PairID{
Token0: token0,
Token1: token1,
}, nil
}
func MustNewPairID(token0, token1 string) *PairID {
pairID, err := NewPairID(token0, token1)
if err != nil {
panic(err)
}
return pairID
}
func NewPairIDFromUnsorted(tokenA, tokenB string) (*PairID, error) {
token0, token1 := SortTokens(tokenA, tokenB)
return NewPairID(token0, token1)
}
func (p *PairID) CanonicalString() string {
return fmt.Sprintf("%s<>%s", p.Token0, p.Token1)
}
func (p *PairID) OppositeToken(token string) (oppToken string, ok bool) {
switch token {
case p.Token0:
return p.Token1, true
case p.Token1:
return p.Token0, true
default:
return "", false
}
}
func (p *PairID) MustOppositeToken(token string) string {
if oppToken, ok := p.OppositeToken(token); ok {
return oppToken
}
panic("Supplied token matches neither side of pair")
}
func NewPairIDFromCanonicalString(pairIDStr string) (*PairID, error) {
tokens := strings.Split(pairIDStr, "<>")
if len(tokens) == 2 {
return NewPairID(tokens[0], tokens[1])
}
return &PairID{}, sdkerrors.Wrapf(ErrInvalidPairIDStr, pairIDStr)
}
func SortTokens(tokenA, tokenB string) (string, string) {
if tokenA < tokenB {
return tokenA, tokenB
}
// else
return tokenB, tokenA
}
func (p *PairID) MustTradePairIDFromMaker(maker string) *TradePairID {
switch {
case p.Token0 == maker:
return MustNewTradePairID(p.Token1, p.Token0)
case p.Token1 == maker:
return MustNewTradePairID(p.Token0, p.Token1)
default:
panic(fmt.Errorf("pair.TradePairIDFromMaker(maker string) called where maker does not equal either pair.Token0 or pair.Token1"))
}
}
func (p *PairID) MustTradePairIDFromTaker(taker string) *TradePairID {
switch {
case p.Token0 == taker:
return MustNewTradePairID(p.Token0, p.Token1)
case p.Token1 == taker:
return MustNewTradePairID(p.Token1, p.Token0)
default:
panic(fmt.Errorf("pair.TradePairIDFromMaker(maker string) called where maker does not equal either pair.Token0 or pair.Token1"))
}
}
func (p *PairID) Equal(otherPairID *PairID) bool {
return *p == *otherPairID
}