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.. | ||
compiler | ||
objects | ||
runtime | ||
script | ||
.gitignore | ||
.goreleaser.yml | ||
.travis.yml | ||
LICENSE | ||
Makefile | ||
README.md | ||
tengo.go |
The Tengo Language
Tengo is a small, dynamic, fast, secure script language for Go.
Tengo is fast and secure because it's compiled/executed as bytecode on stack-based VM that's written in native Go.
/* The Tengo Language */
each := func(seq, fn) {
for x in seq { fn(x) }
}
sum := func(init, seq) {
each(seq, func(x) { init += x })
return init
}
n := sum(0, [1, 2, 3]) // == 6
s := sum("", [1, 2, 3]) // == "123"
Run this code in the Playground
Features
- Simple and highly readable Syntax
- Dynamic typing with type coercion
- Higher-order functions and closures
- Immutable values
- Garbage collection
- Securely Embeddable and Extensible
- Compiler/runtime written in native Go (no external deps or cgo)
- Executable as a standalone language / REPL
Benchmark
fib(35) | fibt(35) | Type | |
---|---|---|---|
Go | 58ms |
4ms |
Go (native) |
Tengo | 4,180ms |
5ms |
VM on Go |
Lua | 1,695ms |
3ms |
Lua (native) |
go-lua | 5,163ms |
5ms |
Lua VM on Go |
GopherLua | 5,525ms |
5ms |
Lua VM on Go |
Python | 3,097ms |
27ms |
Python (native) |
starlark-go | 15,307ms |
5ms |
Python-like Interpreter on Go |
gpython | 17,656ms |
5ms |
Python Interpreter on Go |
goja | 6,876ms |
5ms |
JS VM on Go |
otto | 81,886ms |
12ms |
JS Interpreter on Go |
Anko | 97,517ms |
14ms |
Interpreter on Go |
* fib(35): Fibonacci(35)
* fibt(35): tail-call version of Fibonacci(35)
* Go does not read the source code from file, while all other cases do
* See here for commands/codes used