Go on Stylus is a code generator for compiling Tinygo code to Stylus-compatible WASM. It does so using a code generator.
The following contract (in an expanded form at cmd/counter/entry.go) simply adds, or subtracts:
//go:generate stylus-go gen
import (
"math/big"
"fmt"
"github.com/af-afk/stylus"
)
//stylus entrypoint
type Storage struct {
Counter stylus.StorageUint256
}
//stylus uint256
func (s Storage) Add(x *big.Int) (y *big.Int, error) {
y = s.Counter.Get()
y.Add(y, x)
s.Counter.Set(y)
return
}
func (s Storage) Sub(x *big.Int) (y *big.Int, err error) {
y = s.Counter.Get()
y.Sub(y, x)
s.Counter.Set(y)
return
}Running go generate parses the files in the directory, and spits out a generated file
that can be compiled with Tinygo. Compilation with Tinygo can be done using go-on-stylus
as a frontend with stylus-go build.