signet-cold 0.7.2

Append-only cold storage for historical blockchain data
Documentation 
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//! Specifier enums for cold storage lookups.
//!
//! These types define how to locate data in cold storage, supporting
//! the standard Ethereum JSON-RPC lookup patterns.

use alloy::primitives::{B256, BlockNumber};

/// Specifier for header lookups.
#[derive(Debug, Clone, Copy)]
pub enum HeaderSpecifier {
    /// Lookup by block number.
    Number(BlockNumber),
    /// Lookup by block hash.
    Hash(B256),
}

impl From<BlockNumber> for HeaderSpecifier {
    fn from(number: BlockNumber) -> Self {
        Self::Number(number)
    }
}

impl From<B256> for HeaderSpecifier {
    fn from(hash: B256) -> Self {
        Self::Hash(hash)
    }
}

/// Specifier for transaction lookups.
#[derive(Debug, Clone, Copy)]
pub enum TransactionSpecifier {
    /// Lookup by transaction hash.
    Hash(B256),
    /// Lookup by block number and transaction index within the block.
    BlockAndIndex {
        /// The block number.
        block: BlockNumber,
        /// The transaction index within the block.
        index: u64,
    },
    /// Lookup by block hash and transaction index within the block.
    BlockHashAndIndex {
        /// The block hash.
        block_hash: B256,
        /// The transaction index within the block.
        index: u64,
    },
}

impl From<B256> for TransactionSpecifier {
    fn from(hash: B256) -> Self {
        Self::Hash(hash)
    }
}

/// Specifier for receipt lookups.
#[derive(Debug, Clone, Copy)]
pub enum ReceiptSpecifier {
    /// Lookup by transaction hash.
    TxHash(B256),
    /// Lookup by block number and transaction index within the block.
    BlockAndIndex {
        /// The block number.
        block: BlockNumber,
        /// The transaction index within the block.
        index: u64,
    },
}

impl From<B256> for ReceiptSpecifier {
    fn from(tx_hash: B256) -> Self {
        Self::TxHash(tx_hash)
    }
}

/// Specifier for SignetEvents lookups.
#[derive(Debug, Clone, Copy)]
pub enum SignetEventsSpecifier {
    /// Lookup all events in a single block.
    Block(BlockNumber),
    /// Lookup all events in a range of blocks (inclusive).
    BlockRange {
        /// The start block number (inclusive).
        start: BlockNumber,
        /// The end block number (inclusive).
        end: BlockNumber,
    },
}

impl From<BlockNumber> for SignetEventsSpecifier {
    fn from(block: BlockNumber) -> Self {
        Self::Block(block)
    }
}

/// Specifier for ZenithHeader lookups.
#[derive(Debug, Clone, Copy)]
pub enum ZenithHeaderSpecifier {
    /// Lookup by block number.
    Number(BlockNumber),
    /// Lookup a range of blocks (inclusive).
    Range {
        /// The start block number (inclusive).
        start: BlockNumber,
        /// The end block number (inclusive).
        end: BlockNumber,
    },
}

impl From<BlockNumber> for ZenithHeaderSpecifier {
    fn from(number: BlockNumber) -> Self {
        Self::Number(number)
    }
}