Struct risc0_steel::StateDb

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pub struct StateDb { /* private fields */ }
Expand description

A simple MPT-based read-only EVM database implementation.

It is backed by a single MerkleTrie for the accounts and one MerkleTrie each for the accounts’ stores. It panics when querying data not contained in the tries. This design allows storage keys to be queried by storage trie root hash, but not by account, which is required to implement DatabaseRef. Thus, in order to use StateDb in revm, a wrapper must be used, which caches the appropriate storage trie root for each basic account query, thus requiring mutability.

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impl StateDb

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pub fn new( state_trie: MerkleTrie, storage_tries: impl IntoIterator<Item = MerkleTrie>, contracts: impl IntoIterator<Item = Bytes>, block_hashes: HashMap<u64, B256>, logs: Option<Vec<Log>>, ) -> Self

Creates a new state database from the given tries.

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