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account_id.go
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account_id.go
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// Go Substrate RPC Client (GSRPC) provides APIs and types around Polkadot and any Substrate-based chain RPC calls
//
// Copyright 2019 Centrifuge GmbH
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package types
import (
"bytes"
"encoding/json"
"errors"
"strings"
"github.com/centrifuge/go-substrate-rpc-client/v4/scale"
"github.com/ethereum/go-ethereum/common/hexutil"
)
type OptionAccountID struct {
option
value AccountID
}
func NewOptionAccountID(value AccountID) OptionAccountID {
return OptionAccountID{option{hasValue: true}, value}
}
func NewOptionAccountIDEmpty() OptionAccountID {
return OptionAccountID{option: option{hasValue: false}}
}
func (o *OptionAccountID) Decode(decoder scale.Decoder) error {
return decoder.DecodeOption(&o.hasValue, &o.value)
}
func (o OptionAccountID) Encode(encoder scale.Encoder) error {
return encoder.EncodeOption(o.hasValue, o.value)
}
// SetSome sets a value
func (o *OptionAccountID) SetSome(value AccountID) {
o.hasValue = true
o.value = value
}
// SetNone removes a value and marks it as missing
func (o *OptionAccountID) SetNone() {
o.hasValue = false
o.value = AccountID{}
}
// Unwrap returns a flag that indicates whether a value is present and the stored value
func (o *OptionAccountID) Unwrap() (ok bool, value AccountID) {
return o.hasValue, o.value
}
const (
AccountIDLen = 32
)
// AccountID represents a public key (an 32 byte array)
type AccountID [AccountIDLen]byte
func (a *AccountID) ToBytes() []byte {
if a == nil {
return nil
}
b := a[:]
return b
}
func (a *AccountID) ToHexString() string {
if a == nil {
return ""
}
return hexutil.Encode(a.ToBytes())
}
func (a *AccountID) Equal(accountID *AccountID) bool {
return bytes.Equal(a.ToBytes(), accountID.ToBytes())
}
func (a AccountID) MarshalJSON() ([]byte, error) {
return json.Marshal(a.ToHexString())
}
func (a *AccountID) UnmarshalJSON(data []byte) error {
accID, err := NewAccountIDFromHexString(strings.Trim(string(data), "\""))
if err != nil {
return err
}
*a = *accID
return nil
}
var (
ErrInvalidAccountIDBytes = errors.New("invalid account ID bytes")
)
// NewAccountID creates a new AccountID type
func NewAccountID(b []byte) (*AccountID, error) {
if len(b) != AccountIDLen {
return nil, ErrInvalidAccountIDBytes
}
a := AccountID{}
copy(a[:], b)
return &a, nil
}
func NewAccountIDFromHexString(accountIDHex string) (*AccountID, error) {
b, err := hexutil.Decode(accountIDHex)
if err != nil {
return nil, err
}
return NewAccountID(b)
}