tycho_simulation/evm/
mod.rs

1use alloy::primitives::U256;
2use tycho_common::keccak256;
3
4pub mod account_storage;
5pub mod decoder;
6pub mod engine_db;
7pub mod protocol;
8pub mod query_pool_swap;
9pub mod simulation;
10pub mod stream;
11pub mod traces;
12pub mod tycho_models;
13
14pub type SlotId = U256;
15/// Enum representing the type of contract compiler.
16#[derive(Debug, PartialEq, Copy, Clone)]
17pub enum ContractCompiler {
18    Solidity,
19    Vyper,
20}
21
22impl ContractCompiler {
23    /// Computes the storage slot for a given mapping based on the base storage slot of the map and
24    /// the key.
25    ///
26    /// # Arguments
27    ///
28    /// * `map_base_slot` - A byte slice representing the base storage slot of the mapping.
29    /// * `key` - A byte slice representing the key for which the storage slot is being computed.
30    ///
31    /// # Returns
32    ///
33    /// A `SlotId` representing the computed storage slot.
34    ///
35    /// # Notes
36    ///
37    /// - For `Solidity`, the slot is computed as `keccak256(key + map_base_slot)`.
38    /// - For `Vyper`, the slot is computed as `keccak256(map_base_slot + key)`.
39    pub fn compute_map_slot(&self, map_base_slot: &[u8], key: &[u8]) -> SlotId {
40        let concatenated = match &self {
41            ContractCompiler::Solidity => [key, map_base_slot].concat(),
42            ContractCompiler::Vyper => [map_base_slot, key].concat(),
43        };
44
45        let slot_bytes = keccak256(&concatenated);
46
47        SlotId::from_be_slice(&slot_bytes)
48    }
49}
tycho_simulation/evm/mod.rs

tycho_simulation/evm/
mod.rs
