uGO is a fast, dynamic scripting language to embed in Go applications. uGO is compiled and executed as bytecode on stack-based VM that's written in native Go.
uGO is inspired by awesome script language Tengo by Daniel Kang. A special thanks to Tengo's creater and contributors.
To see how fast uGO is, please have a look at fibonacci benchmarks.
Play with uGO via Playground built for WebAssembly.
Fibonacci Example
param arg0
var fib
fib = func(x) {
if x == 0 {
return 0
} else if x == 1 {
return 1
}
return fib(x-1) + fib(x-2)
}
return fib(arg0)- Written in native Go (no cgo).
if elsestatements.forandfor instatements.try catch finallystatements.param,global,varandconstdeclarations.- Rich builtins.
- Module support.
- Go like syntax with additions.
uGO name comes from the initials of my daughter's, wife's and my name. It is
not related with Go.
I needed a faster embedded scripting language with runtime error handling.
go get github.com/ozanh/ugo@latest
uGO has a REPL application to learn and test uGO scripts.
go install github.com/ozanh/ugo/cmd/ugo@latest
./ugo
This example is to show some features of uGO.
https://play.golang.org/p/1Tj6joRmLiX
package main
import (
"fmt"
"github.com/ozanh/ugo"
)
func main() {
script := `
param ...args
mapEach := func(seq, fn) {
if !isArray(seq) {
return error("want array, got " + typeName(seq))
}
var out = []
if sz := len(seq); sz > 0 {
out = repeat([0], sz)
} else {
return out
}
try {
for i, v in seq {
out[i] = fn(v)
}
} catch err {
println(err)
} finally {
return out, err
}
}
global multiplier
v, err := mapEach(args, func(x) { return x*multiplier })
if err != undefined {
return err
}
return v
`
bytecode, err := ugo.Compile([]byte(script), ugo.DefaultCompilerOptions)
if err != nil {
panic(err)
}
globals := ugo.Map{"multiplier": ugo.Int(2)}
ret, err := ugo.NewVM(bytecode).Run(
globals,
ugo.Int(1), ugo.Int(2), ugo.Int(3), ugo.Int(4),
)
if err != nil {
panic(err)
}
fmt.Println(ret) // [2, 4, 6, 8]
}More standard library modules will be added.
More tests will be added.
Basic object oriented programming support.
uGO is licensed under the MIT License.
See LICENSE for the full license text.
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