cerc-io/watcher-ts

mirror of https://github.com/cerc-io/watcher-ts synced 2025-01-24 03:59:06 +00:00

Ashwin Phatak a0aae09f83

Get slot for ERC20 variable from storage layout (#13 )

* Get slot for ERC20 variable from storage layout.

* Fix solidity-mapper build for importing library functions.

* Implement lint command in solidity-mapper package.

Co-authored-by: nikugogoi <95nikass@gmail.com>

2021-05-31 14:50:05 +05:30

861 B

Raw Blame History

solidity-mapper

Get value of state variable from storage for a solidity contract.

Pre-requisites

NodeJS and NPM

https://nodejs.org/en/ or use https://github.com/nvm-sh/nvm

Instructions

Run the tests using the following command

$ yarn test

Different Types

Booleans
Integers
Fixed Point Numbers
Address
Contract Types
Fixed-size byte arrays
Enums
Function Types
Arrays
Structs
Mapping Types

Observations

The storage layouts are formed according to the rules in https://docs.soliditylang.org/en/latest/internals/layout_in_storage.html#layout-of-state-variables-in-storage
Structs can occupy multiple slots depending on the size required by its members.
Fixed arrays can occupy multiple slots according to the size of the array and the type of array.