When attempting to build on arm, I get this:
src/github.com/mattn/anko/builtins/math/big/big.go:19: constant 4294967295 overflows int

and the build fails.

Hi,

Im trying exporting my function to Anko, but im getting "reflect: cannot use []interface {} as type string in Call". My code:

env.Define("gociExec", func(command string, params ...string) {
cmd := exec.Command(command, params...)
out, err := cmd.Output()

if err != nil {
    job.AppendOutputContentLine(JOB_OUTPUT_GROUP_CONSOLE_NAME, err.Error())
} else {
    outList := strings.Split(string(out), "\n")

    for _, outListItem := range outList {
        job.AppendOutputContentLine(JOB_OUTPUT_GROUP_CONSOLE_NAME, outListItem)
    }
}

})

I want export a function that have two params: string and array of strings (...string).

Can you help me?

Hi

How to force an error inside script?

Thx.

Hi ,
How work with (public,private,protected) variable,function in class at anko?

module Plugin{
    private owner="anko"
    public var ver=1.5  
    private func own(){
        println("is ok")
    }
    public func version() {
        println(this.ver)
        println(this.owner)
   }
}
Plugin.version()
Print (Plugin.ver)
####################
Plugin.ver=99 #this change value of variable
Print (Plugin.ver)
####################
Plugin.owner="none" #this say error(example: is not public...)
####################
Plugin.own() #this say error(function is not public...)

Hi,

I dont find any contact here, so i decide write here.

How long this project is supported?
It has an active development?
Everything is working fine with Go 1.6?

I want put it on my open-source project like Jenkins, but made with Go. I need a script language user make their script to deploy.

hi
Very ashamed

example : list={"name":"attn",1,5,6,7,8}

i not want then you do this.
i want (me) do this. but need a help.
can not say me to use what to make this?
mean how can store value in go?

tank you. good bye.

I see there is a slice support branch, but it was never merged into master, are you still working on it ? Is it on hold ?

Thanks.

..

I'm looking for a way to stop or limit the time Anko can execute. I looked through the source but I could not find a way to do this.

Would it be possible to implement the ability to cancel Anko execution?

I'm using Anko for a thread-safe project and i found that the VM isn't safe for multiple goroutines.

I've forked and quickly fix the issue i have, but i found there is a lack of support for this on the package and no data race tests are present to detect these issues.

But by running go test -race ./... from the root directory, you can find 1 data race found "by accident" on a test.

I have created a function in go that returns a uint32. I then call toInt on that value in anko, which converts it to 0. I think there's a bug in how this is currently defined:

env.Define("toInt", func(v interface{}) int64 {
        nt := reflect.TypeOf(1)
        rv := reflect.ValueOf(v)
        if rv.Type().ConvertibleTo(nt) {
            return 0
        }
        return rv.Convert(nt).Int()
    })

For this to work, I think the return statements will need to switch positions (see in playground, with added ability to handle converting strings).

BTW, toFloat and toBool also have this bug. I'll submit a PR to fix all 3 (and add the capability to convert from string).

http://play-anko.appspot.com/p/066937bbe85d4d0d5984357688baa995f30607ce

var qq = import("github.com/PuerkitoBio/goquery")

got an error:
package 'github.com/puerkitobio/goquery' not found

It seems that the README of this project includes Ocdp's picture licensed under CC BY-SA 3.0.

You should add a credit about it to the README.

Hi
test input :
age=2
func test(){
age=age*2
print(age)
}
test()
now in function , can access to all of out. but this is bad.

need a global() function to can get access variable out of func.
please add global() function to interpreter.

tank you.

Hi
Please Check this.

example/test.ank (input file) : print(5**5)

vm/vm.go file:

case "**":
if lhsV.Kind() == reflect.Float64 {
return reflect.ValueOf(math.Pow(toFloat64(lhsV), toFloat64(rhsV))), nil
}
print(toFloat64(lhsV))//added by me to test
print(" ** ")//added by me to test
print(toFloat64(rhsV))//added by me to test
print("\n")//added by me to test
print(math.Pow(toFloat64(lhsV),toFloat64(rhsV)))//added by me to test
print("\n")//added by me to test
return reflect.ValueOf(int64(math.Pow(toFloat64(lhsV), toFloat64(rhsV)))), nil

=========

output :

$ ./anko example/test.ank
+5.000000e+000 ** +5.000000e+000
+3.125000e+003
3125

why output of pow is 3125 ?!!!

So I want to try making Post request with http:-

var http, ioutil = import("net/http"), import("io/ioutil")
var url = import("net/url")

r = http.DefaultClient.PostForm("http://httpbin.org/post", {"name": "kamal"})

This didn't work either:-

data = url.Values({"name": "kamal"})
r = http.DefaultClient.PostForm("http://httpbin.org/post", data)

..

hi
why tab is column and not space?

input :‌

1. println("hello1\t2\t3")
2. println("1\t2\t3")

i think is better then you change \t to example \tc(as column) and make \t as a tab space.

tank you.

Hi
Feature Request, Not Show Offset Chars at Error Line(yycolumn)!

Example error text :

example/test.ank:11: syntax error:

example/test.ank:11:** syntax error:

so 11:** , here ** why empty?
error of (lexer and parser) both just show line and not show offset current error line!

carefull link for example , have startColumn and column :

• https://github.com/iNamik/go_lexer/blob/master/lexer.go
• https://github.com/awalterschulze/gographviz/blob/master/lexer/lexer.go
• ... and also can see parser files of projects.

i also work on this , file anko.go :

fmt.Fprintf(os.Stderr, "%s:%d: %s\n", source, e.Pos.Line, err)
changed to :

fmt.Fprintf(os.Stderr, "%s:%d:%d %s\n", source, e.Pos.Line,e.Pos.Column, err)

so now also show offset/column of error. 👍 👍

One-Test

now again compile go build anko.go and next test with a input :

print(5***2)
print("\n")

file : http://ilestra.com/input-1.txt

now error is : example/test.ank:1:12 syntax error: unexpected ')'
say in offset 12 have error but in offset 12 code end.
and error of me available in offset 10. 👎 👎

Two-Test

also now with another test input :

print(456456);print(456***);print(5**2)
print("\n")

file : http://ilestra.com/input-2.txt

also now error say : example/test.ank:1:27 syntax error: unexpected ')'
but offset/column of my error available in 25 or 26.

Tree-Test

also again test with input :

print(456456);print( @#$%^&*(((((( ));print(5**2)
print "\n"

file : http://ilestra.com/input-3.txt

error now: example/test.ank:1:29 syntax error: unexpected $end

Output of column/offset is expected to be 28 or 29

Github delete space of my test's code. so i also upload file.

I think Lexer need some changes.
may problem is $$.SetPosition($1.Position()) in some yacc rule?

can you check/fix this?

When defining a float, the exponent sign cannot be used. For example:

#!anko

# ok
f = 1.325e12
println(typeOf(f))
println(f)

# fail
f = 1.325e+12
println(typeOf(f))
println(f)

# fail
f = 1.325e-12
println(typeOf(f))
println(f)

Sample script with a syntax error:

#!anko

func fib(n) {
  a, b = 1, 1
  f = []
  for i in range n {
    f += a
    b += a
    a = b - a
  }
  return f
}

println(fib(20))

You get this output:

$ ./anko fib-for.ank
fib-for.ank:11: syntax error: unexpected IDENT

The reported line is incorrect, the error is on line 6. The correct line can be found by doing (l.pos.Line-1)/2+1... but that just masks the underlying problem - somewhere a new line is double counted.

Hi
How can support utf-8 name for variables and functions?!
///////////////////////////////////////////////////////////////////////////////////////////
Example :
var саллам="Hello" (utf-8 name)
var سلم="Hello" (utf-8 name)
var atext-with="Hello" (name with - char)
func سلم(){return 5;} (utf-8 name)
///////////////////////////////////////////////////////////////////////////////////////////
isLetter() and scanIdentifier() lexer.go file need some changes.

can use from https://golang.org/pkg/unicode/ (unicode.IsLetter function)
how can fix?

# github.com/mattn/anko/vm
./env_test.go:12: invalid operation: ! error
./env_test.go:27: env.New undefined (type *Env has no field or method New)
./env_test.go:29: invalid operation: ! error
./env_test.go:45: env.New undefined (type *Env has no field or method New)
./env_test.go:48: invalid operation: ! error
./env_test.go:59: invalid operation: ! error
FAIL    github.com/mattn/anko/vm [build failed]

go version go1.3.3 linux/amd64
Debian 3.16.7-ckt4-3 (2015-02-03) x86_64 GNU/Linux

Great & Cool project. In anko, I can't see slice support , b.e. data[start : end]
Then , I implemented in the file github.com/mattn/anko/builtins/strings/strings.go

 m.Define("Substring", reflect.ValueOf(func(args ...interface{}) string {
                if len(args) < 2 {
                        panic("Missing arguments")
                }
                if len(args) > 3 {
                        panic("Too many arguments")
                }
                src   := args[0].(string)
                start := args[1].(int64)
                end   := len(src)
                if len(args) > 2 {
                        end = int(args[2].(int64))
                }
                return string(src[start:end])
        }))

You have considered include support for slices (this would change the syntax)

What Problem ?

why every time then script run , Order/Priority of array item is Different?

Input :

list={"name":"anko","age":49,"child":{"name":"anko","age":40}}
print(list)

Output :

$ ./anko input.txt

map[name:anko age:49 child:map[name:arshia age:anko]]

$ ./anko input.txt

map[age:49 child:map[name:anko age:40] name:anko]

I want to use Sourcegraph code search and code review with anko. A project maintainer needs to enable it to set up a webhook so the code is up-to-date there.

Could you please enable anko on @sourcegraph by going to https://sourcegraph.com/github.com/mattn/anko and clicking on Settings? (It should only take 15 seconds.)

Thank you!

Hi, I'm playing anko script to studying go. I realized it couldn't modify map value.

http://play-anko.appspot.com/p/a55dd5e7ebc8ac0f109de84a0d61fbeae6d63a0a

I'm poor about reflection things,I googled it and found this thread https://groups.google.com/forum/?fromgroups=#!topic/golang-nuts/4_pabWnsMp0 :
map value is not addressable so it can't modify value directly.

I've tried to fix this issue but I'm not sure this patch is good.

diff --git a/vm/vm.go b/vm/vm.go
index f238ed5..6df93bf 100644
--- a/vm/vm.go
+++ b/vm/vm.go
@@ -511,6 +511,7 @@ func invokeLetExpr(expr ast.Expr, rv reflect.Value, env *Env) (reflect.Value, er
        return rv, nil
    case *ast.MemberExpr:
        v, err := invokeExpr(lhs.Expr, env)
+       orig := v
        if err != nil {
            return v, NewError(expr, err)
        }
@@ -533,12 +534,17 @@ func invokeLetExpr(expr ast.Expr, rv reflect.Value, env *Env) (reflect.Value, er
            v = v.FieldByName(lhs.Name)
        } else if v.Kind() == reflect.Map {
            v = v.MapIndex(reflect.ValueOf(lhs.Name))
+           y := v.Interface()
+           v = reflect.ValueOf(&y).Elem()
        }

        if !v.CanSet() {
            return NilValue, NewStringError(expr, "Cannot assignable")
        }
        v.Set(rv)
+       if orig.Kind() == reflect.Map {
+           orig.SetMapIndex(reflect.ValueOf(lhs.Name), v)
+       }
        return v, nil
    case *ast.ItemExpr:
        v, err := invokeExpr(lhs.Value, env)

can you check this issue when you have a chance?

after go get .... and 295fa83

input :
var a = 1
p = &a
println(1***p)

also again another error : input.txt:2:3 syntax error: unexpected '='

fix this.

hi
Why Hashmap index name can not int or another type?!

need change parser.go.y file :
expr_pair : STRING ':' expr { $$ = &ast.PairExpr{Key: $1.Lit, Value: $3} }

use expr for index name.

also vm.go and expr.go file need some changes!

please also check this.
tank you.

The following gives Invalid Operation, as it should:

var j = 3
println(j["v"])

The following, however prints 3. It should give the same Invalid Operation as above.

func test(h) {
  return h["v"]
}

var j = 3

println(test(j))

hi
need to can include another file in current file.... with

include() ==>show error in file
require() ==>not show error in file

example : include("config.ank")

tankx.

hi.

yes?

hi
How can add index name for every array value?!
(mean map type)

example : [ 0:"start","name":"mattn","age":39,"child":[1,2,3,4,5,9:1] ]

also need to in interpreter code return a array.

tank you.
please add this to source.

Hi,
Need ability to load a new librarys just by adding a file in near of the project(like php/python extensions) without rebuild anko.
example in near of output anko file have a extensions folder, then auto load all library of them
Please add this.
I think this a good ability.
https://tip.golang.org/pkg/plugin/ in go 1.8
Thanks a lot. 👍

Run in anko playground.

json = import("encoding/json")

jsonTrans = `{"name": "ph_settings", "type": "anko_cmd"}`
println(jsonTrans)

out = {}
err = json.Unmarshal(toByteSlice(jsonTrans), &out)
if err != nil {
    println("unmarshal: ", err)
}
println("result: ", out)

hi
Can not parse big int

example input :

print(5*99999999999999999999999999999999999999999999999999999999999999999999999999999999999999999456456456456666666666666666666666666666666666666666666666666666666666666699999999999999999999999999999999999999)

error :

typein:1: strconv.ParseInt: parsing "99999999999999999999999999999999999999999999999999999999999999999999999999999999999999999456456456456666666666666666666666666666666666666666666666666666666666666699999999999999999999999999999999999999": value out of range

The code at http://play-anko.appspot.com/p/dd93df95984fb46f739f322e3a476b5cf2c4fd8a is causing an invalid operation exception in a strange place.

I'd think that the resp.items would be evaluated rather than just the resp which is what appears to be happening in the above code. -- This is just a simple mockup, in my real usecase I'm exposing an http API endpoint which returns something like resp, which is how I surfaced the bug.

For example the exec.Command() method is variadic (takes list of string), is there a way to call such a method, it seems '...' expression would be needed, or maybe you have an alternative ?

http://play-anko.appspot.com/p/4140ef199db61653c1265dd82160929251cef9f2

I could add that feature but wanted to check if I'm missing something first.

Related question:

a = ["a", "b", "c"]

yelds a []interface{}

should core have methods such as toStringSlice() to make it easy to convert that into []string ?

Thanks

I have a question about parser about '>' GE '<' LE.
Not it looks like this

%nonassoc EQEQ NEQ ','
%left '>' GE '<' LE SHIFTLEFT SHIFTRIGHT

if( 3 > 2 > 1){
println("true")
}else{
println("false")
}

This code prints "false".
IMO this should be

%nonassoc EQEQ NEQ ',' '>' GE '<' LE
%left SHIFTLEFT SHIFTRIGHT

Setting function to a map:

obj = {
    "foo": func() {
        println("foo")
    }
}

and then calling it directly:

obj.foo()

throws Unknown function error.

However saving it to a variable and calling the variable works:

foo = obj.foo
foo()

Script:

f, err = io.ioutil.ReadFile("file")
println(err == nil)
println(err != nil)

Output if file exist:

true
false

Output if file does not exist:

true
false

Working with err as a string

err != ""

#16 was closed prematurely; the commit there does nothing to address the issue raised.

I'd like to define a function at the repl, is multiline input available? For example, when I try to type in a function, I get an error (1) and a hang (2).

$ anko
> f=func(x) {
typein:1: syntax error: unexpected $end, expecting ','             <error (1)>                                   
>   return x+1 }
 <hang (2) >

hi
how can hidden interface[*]{} text from output?

> age=39
39
> var age=39
[]interface {}{39}

var age=39 why have output?

b, err = ioutil.ReadFile("file")

This doesn't throw error

b, _ = ioutil.ReadFile("file")

Also not

b = ioutil.ReadFile("file")

In this case, anko should throw an error.

ioutil.ReadFile("file")

Also throw.

Hi
What is ^ operator? and what do?

print(^5) ==> -6
print(^-5) ==> +4

in source : reflect.ValueOf(^toInt64(v))
after search in google undrestand then this operator is Bitwise XOR
so what do ^ opeator in go?

you send me a sample code in : #55

input :
var a = 1
p = &a
println(1***p)

but this say error :

anko$ ./anko input.txt
panic: reflect.Value.Addr of unaddressable value
goroutine 1 [running]:
panic(0x78ab80, 0xc820075070)
/usr/lib/go-1.6/src/runtime/panic.go:481 +0x3e6
reflect.Value.Addr(0x76b840, 0xc820075010, 0x16, 0x0, 0x0, 0x0)
/usr/lib/go-1.6/src/reflect/value.go:240 +0x8c
github.com/mattn/anko/vm.invokeExpr(0x7f6ad5c3ad20, 0xc8200de780, 0xc820096410, 0x0, 0x0, 0x0, 0x0, 0x0)
/home/compiler/go/src/github.com/mattn/anko/vm/vm.go:844 +0xc8af
github.com/mattn/anko/vm.invokeExpr(0x7f6ad5c3ad58, 0xc820070340, 0xc820096410, 0x0, 0x0, 0x0, 0x0, 0x0)
/home/compiler/go/src/github.com/mattn/anko/vm/vm.go:1199 +0xd30
github.com/mattn/anko/vm.invokeExpr(0x7f6ad5c3ad90, 0xc820096500, 0xc820096410, 0x0, 0x0, 0x0, 0x0, 0x0)
/home/compiler/go/src/github.com/mattn/anko/vm/vm.go:1315 +0x770d
github.com/mattn/anko/vm.RunSingleStmt(0x7f6ad5c3adc8, 0xc8200de7a0, 0xc820096410, 0x0, 0x0, 0x0, 0x0, 0x0)
/home/compiler/go/src/github.com/mattn/anko/vm/vm.go:130 +0x58f3
github.com/mattn/anko/vm.Run(0xc820070380, 0x3, 0x4, 0xc820096410, 0x0, 0x0, 0x0, 0x0, 0x0)
/home/compiler/go/src/github.com/mattn/anko/vm/vm.go:95 +0x214
main.main()
/home/compiler/go/src/github.com/mattn/anko/anko.go:144 +0xaa8

i have tree Feature Requset:

One

var list=[1,2,3,4]
list[]=5 # now The variable output expected is [1,2,3,4,5]
print(list)

Two

var list={5:45456}

can not set index name as int or get value from function or .....
in go also can get index name from other types, but anko no...

Tree

i think need a new data type. i also help to make this.
Derived from the array and Maps
example with operator <>
some example :

var list= < 1,2,3,4,5 >
var list= < 1,2,3,4,5 , < 56789 > , 9 >
var list= < 1,2,3,4,5 , < 56789,"dfgdfg" >,9,"dfgdfdfg>
var list= < "name" : "anko" , "age" : 50 , "child" : < 1 , 2 , 3 , "4" , 5 > >

HI
why not add feature request? and just lock issues?
link : #56

example One :
var list=[1,2,3,4]
list[]=5# now The variable output expected is [1,2,3,4,5]
list[]=8# now The variable output expected is [1,2,3,4,5,8]
list[]=9# now The variable output expected is [1,2,3,4,5,8,9]
list[]="hello"# now The variable output expected is [1,2,3,4,5,8,9,"hello"]
print(list)

i want can after make variable , add some value to array.
but you say anko have range(1,5) :|

i not have big request. just small changes.
please read my request on page.
please............................................

I'd like to define a function at the repl, is multiline input available? For example, when I try to type in a function, I get an error (1) and a hang (2).

$ anko
> f=func(x) {
typein:1: syntax error: unexpected $end, expecting ','             <error (1)>                                   
>   return x+1 }
 <hang (2) >