Update tengo vendor and load the stdlib. Fixes #789 (#792)

1 files changed, 17 insertions, 15 deletions

diff --git a/vendor/github.com/d5/tengo/README.md b/vendor/github.com/d5/tengo/README.md
index 7aa05966..e68b0f86 100644
--- a/vendor/github.com/d5/tengo/README.md
+++ b/vendor/github.com/d5/tengo/README.md
@@ -7,7 +7,6 @@
 [![GoDoc](https://godoc.org/github.com/d5/tengo?status.svg)](https://godoc.org/github.com/d5/tengo/script)
 [![Go Report Card](https://goreportcard.com/badge/github.com/d5/tengo)](https://goreportcard.com/report/github.com/d5/tengo)
 [![Build Status](https://travis-ci.org/d5/tengo.svg?branch=master)](https://travis-ci.org/d5/tengo)
-[![](https://img.shields.io/badge/Support%20Tengo-%241-brightgreen.svg)](https://www.patreon.com/tengolang)
 
 **Tengo is a small, dynamic, fast, secure script language for Go.** 
 
@@ -16,6 +15,8 @@ Tengo is **[fast](#benchmark)** and secure because it's compiled/executed as byt
 ```golang
 /* The Tengo Language */
 
+fmt := import("fmt")
+
 each := func(seq, fn) {
     for x in seq { fn(x) }
 }
@@ -25,11 +26,11 @@ sum := func(init, seq) {
     return init
 }
 
-n := sum(0, [1, 2, 3])   // == 6
-s := sum("", [1, 2, 3])  // == "123"
+fmt.println(sum(0, [1, 2, 3]))   // "6"
+fmt.println(sum("", [1, 2, 3]))  // "123"
 ```
 
-> Run this code in the [Playground](https://tengolang.com/?s=d01cf9ed81daba939e26618530eb171f7397d9c9)
+> Run this code in the [Playground](https://tengolang.com/?s=0c8d5d0d88f2795a7093d7f35ae12c3afa17bea3)
 
 ## Features
 
@@ -41,22 +42,23 @@ s := sum("", [1, 2, 3])  // == "123"
 - [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
+- Use cases: rules engine, [state machine](https://github.com/d5/go-fsm), [gaming](https://github.com/d5/pbr), data pipeline, [transpiler](https://github.com/d5/tengo2lua)
 
 ## 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 |
+| Go | `48ms` | `3ms` | Go (native) |
+| [**Tengo**](https://github.com/d5/tengo) | `2,349ms` | `5ms` | VM on Go |
+| Lua | `1,416ms` | `3ms` | Lua (native) |
+| [go-lua](https://github.com/Shopify/go-lua) | `4,402ms` | `5ms` | Lua VM on Go |
+| [GopherLua](https://github.com/yuin/gopher-lua) | `4,023ms` | `5ms` | Lua VM on Go |
+| Python | `2,588ms` | `26ms` | Python (native) |
+| [starlark-go](https://github.com/google/starlark-go) | `11,126ms` | `6ms` | Python-like Interpreter on Go |
+| [gpython](https://github.com/go-python/gpython) | `15,035ms` | `4ms` | Python Interpreter on Go |
+| [goja](https://github.com/dop251/goja) | `5,089ms` | `5ms` | JS VM on Go |
+| [otto](https://github.com/robertkrimen/otto) | `68,377ms` | `11ms` | JS Interpreter on Go |
+| [Anko](https://github.com/mattn/anko) | `92,579ms` | `18ms` | 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)_