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pair.go
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pair.go
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package token
import (
"fmt"
"strings"
)
const DefaultPairSeparator = "/"
type Pair struct {
Base string `json:"base"`
Quote string `json:"quote"`
}
func PairFromString(s string) (*Pair, error) {
return PairFromStringWithSeparator(s, DefaultPairSeparator)
}
func PairFromStringWithSeparator(s string, separator string) (*Pair, error) {
separatorIndex := strings.Index(s, separator)
if separatorIndex == -1 {
return nil, fmt.Errorf("separator not found in pair string")
}
pair := &Pair{
Base: s[:separatorIndex],
Quote: s[separatorIndex + 1:],
}
return pair, nil
}
func (p *Pair) String() string {
return p.Base + DefaultPairSeparator + p.Quote
}
func (p *Pair) StringWithSeparator(separator string) string {
return p.Base + separator + p.Quote
}
func (p *Pair) Reversed() *Pair {
return &Pair{
Base: p.Quote,
Quote: p.Base,
}
}