forked from cerc-io/plugeth
56 lines
2.2 KiB
Go
56 lines
2.2 KiB
Go
// Copyright 2015 The go-ethereum Authors
|
|
// This file is part of the go-ethereum library.
|
|
//
|
|
// The go-ethereum library is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// The go-ethereum library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
package state
|
|
|
|
import (
|
|
"github.com/ethereum/go-ethereum/common"
|
|
"github.com/ethereum/go-ethereum/core/types"
|
|
"github.com/ethereum/go-ethereum/ethdb"
|
|
"github.com/ethereum/go-ethereum/rlp"
|
|
"github.com/ethereum/go-ethereum/trie"
|
|
)
|
|
|
|
// NewStateSync creates a new state trie download scheduler.
|
|
func NewStateSync(root common.Hash, database ethdb.KeyValueReader, onLeaf func(keys [][]byte, leaf []byte) error, scheme string) *trie.Sync {
|
|
// Register the storage slot callback if the external callback is specified.
|
|
var onSlot func(keys [][]byte, path []byte, leaf []byte, parent common.Hash, parentPath []byte) error
|
|
if onLeaf != nil {
|
|
onSlot = func(keys [][]byte, path []byte, leaf []byte, parent common.Hash, parentPath []byte) error {
|
|
return onLeaf(keys, leaf)
|
|
}
|
|
}
|
|
// Register the account callback to connect the state trie and the storage
|
|
// trie belongs to the contract.
|
|
var syncer *trie.Sync
|
|
onAccount := func(keys [][]byte, path []byte, leaf []byte, parent common.Hash, parentPath []byte) error {
|
|
if onLeaf != nil {
|
|
if err := onLeaf(keys, leaf); err != nil {
|
|
return err
|
|
}
|
|
}
|
|
var obj types.StateAccount
|
|
if err := rlp.DecodeBytes(leaf, &obj); err != nil {
|
|
return err
|
|
}
|
|
syncer.AddSubTrie(obj.Root, path, parent, parentPath, onSlot)
|
|
syncer.AddCodeEntry(common.BytesToHash(obj.CodeHash), path, parent, parentPath)
|
|
return nil
|
|
}
|
|
syncer = trie.NewSync(root, database, onAccount, scheme)
|
|
return syncer
|
|
}
|