add solana types package

pkg/base58/base58.go

@@ -10,8 +10,11 @@ package base58
 
 import (
 	"encoding/binary"
+	"errors"
 )
 
+var ErrEncode = errors.New("base58 encoding error")
+
 // alphabet maps [0, 58) to the base58 character.
 const alphabet = "123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz"
 
@@ -270,3 +273,14 @@ func Decode32(out *[32]byte, encoded []byte) (ok bool) {
 
 	return true
 }
+
+func Encode(buf []byte) string {
+	switch len(buf) {
+	case 32:
+		var out [44]byte
+		outLen := Encode32(&out, *(*[32]byte)(buf))
+		return string(out[:outLen])
+	default:
+		panic("unsupported base58 length")
+	}
+}

pkg/solana/types.go

@@ -0,0 +1,26 @@
+package solana
+
+import "go.firedancer.io/radiance/pkg/base58"
+
+type Hash [32]byte
+type Address [32]byte
+type Signature [64]byte
+
+func (p *Hash) String() string {
+	return base58.Encode(p[:])
+}
+
+func (p *Hash) UnmarshalText(b []byte) error {
+	if !base58.Decode32((*[32]byte)(p), b) {
+		return base58.ErrEncode
+	}
+	return nil
+}
+
+func (p *Address) String() string {
+	return (*Hash)(p).String()
+}
+
+func (p *Address) UnmarshalText(b []byte) error {
+	return (*Hash)(p).UnmarshalText(b)
+}