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SyncNative.go
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SyncNative.go
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// Copyright 2021 github.com/gagliardetto
//
// 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 token
import (
"errors"
"github.com/cielu/go-solana/common"
"github.com/cielu/go-solana/pkg/encodbin"
"github.com/cielu/go-solana/types/base"
)
// SyncNative Given a wrapped / native token account (a token account containing SOL)
// updates its amount field based on the account's underlying `lamports`.
// This is useful if a non-wrapped SOL account uses `system_instruction::transfer`
// to move lamports to a wrapped token account, and needs to have its token
// `amount` field updated.
type SyncNative struct {
// [0] = [WRITE] tokenAccount
// ··········· The native token account to sync with its underlying lamports.
base.AccountMetaSlice `bin:"-" borsh_skip:"true"`
}
// NewSyncNativeInstructionBuilder creates a new `SyncNative` instruction builder.
func NewSyncNativeInstructionBuilder() *SyncNative {
nd := &SyncNative{
AccountMetaSlice: make([]*base.AccountMeta, 1),
}
return nd
}
func (sync SyncNative) GetAccounts() (accounts []*base.AccountMeta) {
accounts = append(accounts, sync.AccountMetaSlice...)
return
}
// SetTokenAccount sets the "tokenAccount" account.
// The native token account to sync with its underlying lamports.
func (sNative *SyncNative) SetTokenAccount(tokenAccount common.Address) *SyncNative {
sNative.AccountMetaSlice[0] = base.Meta(tokenAccount).WRITE()
return sNative
}
// GetTokenAccount gets the "tokenAccount" account.
// The native token account to sync with its underlying lamports.
func (sNative *SyncNative) GetTokenAccount() *base.AccountMeta {
return sNative.AccountMetaSlice[0]
}
func (sNative SyncNative) Build() *Instruction {
return &Instruction{BaseVariant: encodbin.BaseVariant{
Impl: sNative,
TypeID: encodbin.TypeIDFromUint8(Instruction_SyncNative),
}}
}
// ValidateAndBuild validates the instruction parameters and accounts;
// if there is a validation error, it returns the error.
// Otherwise, it builds and returns the instruction.
func (sNative SyncNative) ValidateAndBuild() (*Instruction, error) {
if err := sNative.Validate(); err != nil {
return nil, err
}
return sNative.Build(), nil
}
func (sNative *SyncNative) Validate() error {
// Check whether all (required) accounts are set:
{
if sNative.AccountMetaSlice[0] == nil {
return errors.New("accounts.TokenAccount is not set")
}
}
return nil
}
func (sNative SyncNative) MarshalWithEncoder(encoder *encodbin.Encoder) (err error) {
return nil
}
// NewSyncNativeInstruction declares a new SyncNative instruction with the provided parameters and accounts.
func NewSyncNativeInstruction(
// Accounts:
tokenAccount common.Address) *SyncNative {
return NewSyncNativeInstructionBuilder().
SetTokenAccount(tokenAccount)
}