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core/state: fix comment

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Gary Rong 2026-04-02 15:13:45 +08:00
parent e376aba33f
commit 4308514161
1 changed files with 13 additions and 9 deletions
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22
core/state/database_iterator.go
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@ -30,8 +30,9 @@ import (
// Iterator is an iterator to step over all the accounts or the specific // Iterator is an iterator to step over all the accounts or the specific
// storage in the specific state. // storage in the specific state.
type Iterator interface { type Iterator interface {
// Next steps the iterator forward one element, returning false if exhausted, // Next steps the iterator forward one element. It returns false if the iterator
// or an error if iteration failed for some reason. // is exhausted or if an error occurs. Any error encountered is retained and
// can be retrieved via Error().
Next() bool Next() bool
// Error returns any failure that occurred during iteration, which might have // Error returns any failure that occurred during iteration, which might have
@ -117,8 +118,9 @@ func newFlatAccountIterator(it snapshot.AccountIterator, preimage PreimageReader
return &flatAccountIterator{it: it, preimage: preimage} return &flatAccountIterator{it: it, preimage: preimage}
} }
// Next steps the iterator forward one element, returning false if exhausted, // Next steps the iterator forward one element. It returns false if the iterator
// or an error if iteration failed for some reason. // is exhausted or if an error occurs. Any error encountered is retained and
// can be retrieved via Error().
func (ai *flatAccountIterator) Next() bool { func (ai *flatAccountIterator) Next() bool {
if ai.err != nil { if ai.err != nil {
return false return false
@ -184,8 +186,9 @@ func newFlatStorageIterator(it snapshot.StorageIterator, preimage PreimageReader
return &flatStorageIterator{it: it, preimage: preimage} return &flatStorageIterator{it: it, preimage: preimage}
} }
// Next steps the iterator forward one element, returning false if exhausted, // Next steps the iterator forward one element. It returns false if the iterator
// or an error if iteration failed for some reason. // is exhausted or if an error occurs. Any error encountered is retained and
// can be retrieved via Error().
func (si *flatStorageIterator) Next() bool { func (si *flatStorageIterator) Next() bool {
return si.it.Next() return si.it.Next()
} }
@ -247,8 +250,9 @@ func newMerkleTrieIterator(tr Trie, start common.Hash, account bool) (*merkleIte
}, nil }, nil
} }
// Next steps the iterator forward one element, returning false if exhausted, // Next steps the iterator forward one element. It returns false if the iterator
// or an error if iteration failed for some reason. // is exhausted or if an error occurs. Any error encountered is retained and
// can be retrieved via Error().
func (ti *merkleIterator) Next() bool { func (ti *merkleIterator) Next() bool {
return ti.it.Next() return ti.it.Next()
} }
@ -383,7 +387,7 @@ func (si *stateIteratee) NewStorageIterator(addressHash common.Hash, start commo
return newFlatStorageIterator(it, si.triedb), nil return newFlatStorageIterator(it, si.triedb), nil
} }
if !si.merkle { if !si.merkle {
return nil, fmt.Errorf("state %x is not available for account traversal", si.root) return nil, fmt.Errorf("state %x is not available for storage traversal", si.root)
} }
// The snapshot is not usable so far, construct the storage iterator from // The snapshot is not usable so far, construct the storage iterator from
// the trie as the fallback. It's not as efficient as the flat state iterator. // the trie as the fallback. It's not as efficient as the flat state iterator.