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61 changes: 41 additions & 20 deletions src/IHevm.sol
Original file line number Diff line number Diff line change
@@ -1,32 +1,53 @@
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

// https://github.com/ethereum/hevm/blob/main/doc/src/controlling-the-unit-testing-environment.md#cheat-codes

/// @author https://github.com/crytic/properties/blob/2526765eedd9bda30c168cd271fa403ac72cb1a9/contracts/util/Hevm.sol
interface IHevm {
function warp(uint256 x) external;
// Set block.timestamp to newTimestamp
function warp(uint256 newTimestamp) external;

// Set block.number to newNumber
function roll(uint256 newNumber) external;

// Add the condition b to the assumption base for the current branch
// This function is almost identical to require
function assume(bool b) external;

// Sets the eth balance of usr to amt
function deal(uint256 usr, uint256 amt) external;

// Loads a storage slot from an address
function load(address where, bytes32 slot) external returns (bytes32);

// Stores a value to an address' storage slot
function store(address where, bytes32 slot, bytes32 value) external;

// Signs data (privateKey, digest) => (r, v, s)
function sign(
uint256 privateKey,
bytes32 digest
) external returns (uint8 r, bytes32 v, bytes32 s);

function roll(uint256 x) external;
// Gets address for a given private key
function addr(uint256 privateKey) external returns (address addr);

function store(
address c,
bytes32 loc,
bytes32 val
) external;
// Performs a foreign function call via terminal
function ffi(
string[] calldata inputs
) external returns (bytes memory result);

function load(address c, bytes32 loc) external returns (bytes32 val);
// Performs the next smart contract call with specified `msg.sender`
function prank(address newSender) external;

function sign(uint256 sk, bytes32 digest)
external
returns (
uint8 v,
bytes32 r,
bytes32 s
);
// Creates a new fork with the given endpoint and the latest block and returns the identifier of the fork
function createFork(string calldata urlOrAlias) external returns (uint256);

function addr(uint256 sk) external returns (address addr);
// Takes a fork identifier created by createFork and sets the corresponding forked state as active
function selectFork(uint256 forkId) external;

function ffi(string[] calldata) external returns (bytes memory);
// Returns the identifier of the current fork
function activeFork() external returns (uint256);

function prank(address sender) external;
// Labels the address in traces
function label(address addr, string calldata label) external;
}