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diff --git a/vendor/github.com/d5/tengo/README.md b/vendor/github.com/d5/tengo/README.md new file mode 100644 index 00000000..7aa05966 --- /dev/null +++ b/vendor/github.com/d5/tengo/README.md @@ -0,0 +1,74 @@ +<p align="center"> + <img src="https://raw.githubusercontent.com/d5/tengolang.com/master/logo_400.png" width="200" height="200"> +</p> + +# The Tengo Language + +[](https://godoc.org/github.com/d5/tengo/script) +[](https://goreportcard.com/report/github.com/d5/tengo) +[](https://travis-ci.org/d5/tengo) +[](https://www.patreon.com/tengolang) + +**Tengo is a small, dynamic, fast, secure script language for Go.** + +Tengo is **[fast](#benchmark)** and secure because it's compiled/executed as bytecode on stack-based VM that's written in native Go. + +```golang +/* 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](https://tengolang.com/?s=d01cf9ed81daba939e26618530eb171f7397d9c9) + +## Features + +- Simple and highly readable [Syntax](https://github.com/d5/tengo/blob/master/docs/tutorial.md) + - Dynamic typing with type coercion + - Higher-order functions and closures + - Immutable values + - Garbage collection +- [Securely Embeddable](https://github.com/d5/tengo/blob/master/docs/interoperability.md) and [Extensible](https://github.com/d5/tengo/blob/master/docs/objects.md) +- Compiler/runtime written in native Go _(no external deps or cgo)_ +- Executable as a [standalone](https://github.com/d5/tengo/blob/master/docs/tengo-cli.md) language / REPL + +## Benchmark + +| | fib(35) | fibt(35) | Type | +| :--- | ---: | ---: | :---: | +| Go | `58ms` | `4ms` | Go (native) | +| [**Tengo**](https://github.com/d5/tengo) | `4,180ms` | `5ms` | VM on Go | +| Lua | `1,695ms` | `3ms` | Lua (native) | +| [go-lua](https://github.com/Shopify/go-lua) | `5,163ms` | `5ms` | Lua VM on Go | +| [GopherLua](https://github.com/yuin/gopher-lua) | `5,525ms` | `5ms` | Lua VM on Go | +| Python | `3,097ms` | `27ms` | Python (native) | +| [starlark-go](https://github.com/google/starlark-go) | `15,307ms` | `5ms` | Python-like Interpreter on Go | +| [gpython](https://github.com/go-python/gpython) | `17,656ms` | `5ms` | Python Interpreter on Go | +| [goja](https://github.com/dop251/goja) | `6,876ms` | `5ms` | JS VM on Go | +| [otto](https://github.com/robertkrimen/otto) | `81,886ms` | `12ms` | JS Interpreter on Go | +| [Anko](https://github.com/mattn/anko) | `97,517ms` | `14ms` | Interpreter on Go | + +_* [fib(35)](https://github.com/d5/tengobench/blob/master/code/fib.tengo): Fibonacci(35)_ +_* [fibt(35)](https://github.com/d5/tengobench/blob/master/code/fibtc.tengo): [tail-call](https://en.wikipedia.org/wiki/Tail_call) version of Fibonacci(35)_ +_* **Go** does not read the source code from file, while all other cases do_ +_* See [here](https://github.com/d5/tengobench) for commands/codes used_ + +## References + +- [Language Syntax](https://github.com/d5/tengo/blob/master/docs/tutorial.md) +- [Object Types](https://github.com/d5/tengo/blob/master/docs/objects.md) +- [Runtime Types](https://github.com/d5/tengo/blob/master/docs/runtime-types.md) and [Operators](https://github.com/d5/tengo/blob/master/docs/operators.md) +- [Builtin Functions](https://github.com/d5/tengo/blob/master/docs/builtins.md) +- [Interoperability](https://github.com/d5/tengo/blob/master/docs/interoperability.md) +- [Tengo CLI](https://github.com/d5/tengo/blob/master/docs/tengo-cli.md) +- [Standard Library](https://github.com/d5/tengo/blob/master/docs/stdlib.md) |