import { Fr } from '@aztec/foundation/fields';
import { HostStorage } from './host_storage.js';
/**
 * Data held within the journal
 */
export type JournalData = {
    newNoteHashes: Fr[];
    newNullifiers: Fr[];
    newL1Messages: Fr[][];
    newLogs: Fr[][];
    /** contract address -\> key -\> value */
    storageWrites: Map<bigint, Map<bigint, Fr>>;
};
/**
 * A cache of the current state of the AVM
 * The interpreter should make any state queries through this object
 *
 * When a sub context's call succeeds, it's journal is merge into the parent
 * When a a call fails, it's journal is discarded and the parent is used from this point forward
 * When a call succeeds's we can merge a child into its parent
 */
export declare class AvmJournal {
    /** Reference to node storage */
    readonly hostStorage: HostStorage;
    private storageReads;
    private newNoteHashes;
    private newNullifiers;
    private newL1Messages;
    private newLogs;
    private storageWrites;
    private parentJournal;
    constructor(hostStorage: HostStorage, parentJournal?: AvmJournal);
    /**
     * Create a new root journal, without a parent
     * @param hostStorage -
     */
    static rootJournal(hostStorage: HostStorage): AvmJournal;
    /**
     * Create a new journal from a parent
     * @param parentJournal -
     */
    static branchParent(parentJournal: AvmJournal): AvmJournal;
    /**
     * Write storage into journal
     *
     * @param contractAddress -
     * @param key -
     * @param value -
     */
    writeStorage(contractAddress: Fr, key: Fr, value: Fr): void;
    /**
     * Read storage from journal
     * Read from host storage on cache miss
     *
     * @param contractAddress -
     * @param key -
     * @returns current value
     */
    readStorage(contractAddress: Fr, key: Fr): Promise<Fr>;
    writeNoteHash(noteHash: Fr): void;
    writeL1Message(message: Fr[]): void;
    writeNullifier(nullifier: Fr): void;
    writeLog(log: Fr[]): void;
    /**
     * Merge Journal into parent
     * - Utxo objects are concatenated
     * - Public state is merged, with the value in the incoming journal taking precedent
     */
    mergeWithParent(): void;
    /**
     * Access the current state of the journal
     *
     * @returns a JournalData object
     */
    flush(): JournalData;
}
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