Interface StateReader

core/state/reader.go:57–72

StateReader defines the interface for accessing accounts and storage slots associated with a specific state. StateReader is supposed to be thread-safe.

//
// StateReader is supposed to be thread-safe.
type StateReader interface {
	// Account retrieves the account associated with a particular address.
	//
	// - Returns a nil account if it does not exist
	// - Returns an error only if an unexpected issue occurs
	// - The returned account is safe to modify after the call
	Account(addr common.Address) (*types.StateAccount, error)

	// Storage retrieves the storage slot associated with a particular account
	// address and slot key.
	//
	// - Returns an empty slot if it does not exist
	// - Returns an error only if an unexpected issue occurs
	// - The returned storage slot is safe to modify after the call
	Storage(addr common.Address, slot common.Hash) (common.Hash, error)
}

// Reader defines the interface for accessing accounts, storage slots and contract
// code associated with a specific state.