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55 lines
1.5 KiB
Go
55 lines
1.5 KiB
Go
package trie
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import (
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"github.com/ledgerwatch/turbo-geth/common"
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)
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var emptyHash [32]byte
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// SubTrie is a result of loading sub-trie from either flat db
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// or witness db. It encapsulates sub-trie root (which is of the un-exported type `node`)
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// If the loading is done for verification and testing purposes, then usually only
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// sub-tree root hash would be queried
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type SubTries struct {
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Hashes []common.Hash // Root hashes of the sub-tries
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roots []node // Sub-tries
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}
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type LoadFunc func(*SubTrieLoader, *RetainList, [][]byte, []int) (SubTries, error)
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// Resolver looks up (resolves) some keys and corresponding values from a database.
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// One resolver per trie (prefix).
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// See also ResolveRequest in trie.go
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type SubTrieLoader struct {
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blockNr uint64
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codeRequests []*LoadRequestForCode
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}
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func NewSubTrieLoader(blockNr uint64) *SubTrieLoader {
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tr := SubTrieLoader{
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codeRequests: []*LoadRequestForCode{},
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blockNr: blockNr,
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}
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return &tr
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}
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func (stl *SubTrieLoader) Reset(blockNr uint64) {
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stl.blockNr = blockNr
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stl.codeRequests = stl.codeRequests[:0]
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}
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// AddCodeRequest add a request for code loading
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func (stl *SubTrieLoader) AddCodeRequest(req *LoadRequestForCode) {
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stl.codeRequests = append(stl.codeRequests, req)
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}
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// Various values of the account field set
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const (
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AccountFieldNonceOnly uint32 = 0x01
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AccountFieldBalanceOnly uint32 = 0x02
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AccountFieldStorageOnly uint32 = 0x04
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AccountFieldCodeOnly uint32 = 0x08
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AccountFieldSSizeOnly uint32 = 0x10
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AccountFieldSetNotAccount uint32 = 0x00
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)
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