https://github.com/brockelmore/HEVMHelpers

https://github.com/brockelmore/HEVMHelpers

Last synced: 3 months ago
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• Host: GitHub
• URL: https://github.com/brockelmore/HEVMHelpers
• Owner: brockelmore
• Created: 2020-10-01T22:08:40.000Z (about 4 years ago)
• Default Branch: master
• Last Pushed: 2021-05-08T03:09:12.000Z (over 3 years ago)
• Last Synced: 2024-04-06T07:34:39.889Z (7 months ago)
• Language: Solidity
• Size: 12.7 KB
• Stars: 48
• Watchers: 3
• Forks: 5
• Open Issues: 1
• Metadata Files:
  • Readme: README.md

Awesome Lists containing this project

• awesome-smart-contract-development - HEVM Helpers
• awesome-dapptools - HEVMHelpers

README

        
# HEVM Helpers

This library is intended for use with HEVM from dapphub. It enables writing to arbitrary contract's storage, targeted by a specific function.

Effectively: this allows you to set an arbitrary value like `balanceOf` of any contract, without knowing storage layout. i.e.:

```

 function write_balanceOf(address who, address acct, uint256 value) public {

    write_map(who, "balanceOf(address)", acct, value);

 }

 function write_balanceOfUnderlying(address who, address acct, uint256 value) public {

    write_map(who, "balanceOfUnderlying(address)", acct, value);

 }

 function write_totalSupply(address who, uint256 value) public {

    write_flat(who, "totalSupply()", value);

 }

```

It supports multi-key `mapping` via: ```write_deep_map(address who, string memory sig, bytes32[] memory keys, address value)```. It has some limitations around structs.