SewUp
What is SewUp
Is contract good enough
forĀ Web 3?
Where is the gap
- Security
- Too low level
- Too many domain knowledge
How to Sew Up
- Security
- Too low level
- Too many domain knowledge
Rust
Contract Dev as Backend
Rust in Contract
- ewasm-rust-api
- Version 0.11.0 (2019 Nov 27)
eWasm
Executor
.rs
Pain point eWasm with Rust
eWasm
Executor
.rs
- Not really Rusty API
-
Result
-
Option
-
- Operating in low-level
-
operate on Bytes32
- Manually handle functional signature
-
- Not easy to test with cargo test
This is C
pub enum CallResult { Successful, Failure, Revert, Unknown, }
This is Rust
pub enum CallError { Failure, Revert, Unknown, }
fn call() -> CallResult;
fn call() -> Result<(), CallError>;
Please read things behind the wordings!
The goal of Sewup
eWasm
WasmEdge
.rs
ewasm-rust-api
sewup
- Rusty API
-
Result
-
Option
-
Error
-
- high level operation
-
like handle KV db
- functional signature macro
- no more byte operation
-
- Easy to test with cargo test
Error
- Customize error
- Good error message
- Easy to use
match your funtion
Rust style result
Rust Style
structure
bytes
Easy for
Developing
string
store without touching Bytes32
Keep working
- Function Inputs (v0.0.2)
- Function outputs (v0.0.2)
- Update mutated Bytes32(Raw) only
Inputs
- from contract caller
- runtime inputs
- from contract developer
- compile time inputs
- tools for generate input data
Outputs
- Rusty
- return a Result
- Non-Rusty
- return T for Result<T>
- Return
- from main
- from handler
Last but not least
Blockchain bring TRUST to the world
Rust is the stem of TRUST
Thanks for listening
Star the project if you like it
There are also help want issues and good first issues
Interested in VM?
WasmEdge is welcom to contribute
SewUp
By Antonio Yang
SewUp
Secondstate EWasm Utility Program, a library to help you sew up your Ethereum project with Rust and just like develop in a common backend.
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