fix: correct branch action in parenthesis expression

Option "-e" allows to set the command to be executed:

```
echo '6001d5ff0000000003000000000107000000dcff' | \
	yaegi -e 'import "fmt"; import "os"; import "encoding/hex"; import "io/ioutil"; func main() { in, _ := ioutil.ReadAll(os.Stdin); decoded, _ := hex.DecodeString(string(in));fmt.Println(string(decoded)) }' 2>/dev/null | \
	hexdump -C
00000000  60 01 d5 ff 00 00 00 00  03 00 00 00 00 01 07 00  |`...............|
00000010  00 00 dc ff 0a                                    |.....|
00000015
```

.golangci.toml

@@ -37,6 +37,7 @@
     "funlen",
     "gocognit",
     "stylecheck",
+    "gomnd",
   ]
 
 [issues]

.travis.yml

@@ -19,8 +19,8 @@ cache:
 matrix:
   fast_finish: true
   include:
-    - go: 1.12.x
     - go: 1.13.x
+    - go: 1.14.x
       env: STABLE=true
 
 env:

CONTRIBUTING.md

@@ -13,7 +13,12 @@ discussions.
 Once the proposal is approved, a Pull Request can be opened. If you want
 to provide early visibility to reviewers, create a [Draft Pull Request].
 
+We will also require you to sign the [Containous Contributor License Agreement]
+after you submit your first pull request to this project. The link to sign the
+agreement will be presented to you in the web interface of the pull request.
+
 [Issues]: https://github.com/containous/yaegi/issues
 [Pull Requests]: https://github.com/containous/yaegi/issues
 [Feature Request]: https://github.com/containous/yaegi/issues/new?template=feature_request.md
 [Draft Pull Request]: https://github.blog/2019-02-14-introducing-draft-pull-requests/
+[Containous Contributor License Agreement]: https://cla-assistant.io/containous/yaegi

README.md

@@ -18,7 +18,7 @@ It powers executable Go scripts and plugins, in embedded interpreters or interac
 * Works everywhere Go works
 * All Go & runtime resources accessible from script (with control)
 * Security: `unsafe` and `syscall` packages neither used nor exported by default
-* Support Go 1.12 and Go 1.13 (the latest 2 major releases)
+* Support Go 1.13 and Go 1.14 (the latest 2 major releases)
 
 ## Install
 
@@ -129,6 +129,24 @@ $ yaegi cmd/yaegi/yaegi.go
 >
 ```
 
+Or for Go scripting in the shebang line:
+
+```console
+$ cat /tmp/test
+#!/usr/bin/env yaegi
+package main
+
+import "fmt"
+
+func main() {
+	fmt.Println("test")
+}
+$ ls -la /tmp/test
+-rwxr-xr-x 1 dow184 dow184 93 Jan  6 13:38 /tmp/test
+$ /tmp/test
+test
+```
+
 ## Documentation
 
 Documentation about Yaegi commands and libraries can be found at usual [godoc.org][docs].

_test/a40.go

@@ -0,0 +1,23 @@
+package main
+
+import "fmt"
+
+type rule uint8
+
+const (
+	r0 rule = iota
+	r1
+	r2
+)
+
+var a = [...]int{
+	r0: 1,
+	r1: 12,
+}
+
+func main() {
+	fmt.Println(a)
+}
+
+// Output:
+// [1 12]

_test/a41.go

@@ -0,0 +1,10 @@
+package main
+
+var a = [...]bool{true, true}
+
+func main() {
+	println(a[0] && true)
+}
+
+// Output:
+// true

_test/and3.go

@@ -0,0 +1,10 @@
+package main
+
+var a = true && true
+
+func main() {
+	println(a)
+}
+
+// Output:
+// true

_test/assign1.go

@@ -9,5 +9,5 @@ func main() {
 	fmt.Println(buf)
 }
 
-// Output
+// Output:
 // []

_test/b1/foo/foo.go

@@ -0,0 +1,7 @@
+package foo
+
+import bar "github.com/containous/yaegi/_test/b2/foo"
+
+var Desc = "in b1/foo"
+
+var Desc2 = Desc + bar.Desc

_test/b2/foo/foo.go

@@ -0,0 +1,3 @@
+package foo
+
+var Desc = "in b2/foo"

_test/bad0.go

@@ -1,4 +1,4 @@
 println("Hello")
 
 // Error:
-// _test/bad0.go:1:1: expected 'package', found println
+// 1:1: expected 'package', found println

_test/bin2.go

@@ -0,0 +1,13 @@
+package main
+
+import (
+	"fmt"
+	"math"
+)
+
+func main() {
+	fmt.Println(math.Abs(-5))
+}
+
+// Output:
+// 5

_test/bin3.go

@@ -0,0 +1,12 @@
+package main
+
+import "fmt"
+
+func main() {
+	str := "part1"
+	str += fmt.Sprintf("%s", "part2")
+	fmt.Println(str)
+}
+
+// Output:
+// part1part2

_test/chan8.go

@@ -0,0 +1,12 @@
+package main
+
+func main() {
+	messages := make(chan bool)
+
+	go func() { messages <- true }()
+
+	println(<-messages && true)
+}
+
+// Output:
+// true

_test/cli2.go

@@ -0,0 +1,59 @@
+package main
+
+import (
+	"fmt"
+	"io/ioutil"
+	"log"
+	"net"
+	"net/http"
+)
+
+type T struct {
+	ln net.Listener
+}
+
+func (t *T) Close() {
+	t.ln.Close()
+}
+
+func client(uri string) {
+	resp, err := http.Get(uri)
+	if err != nil {
+		log.Fatal(err)
+	}
+	body, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		log.Fatal(err)
+	}
+	fmt.Println(string(body))
+}
+
+func server(ln net.Listener, ready chan bool) {
+	http.HandleFunc("/hello", func(w http.ResponseWriter, r *http.Request) {
+		var r1 *http.Request = r
+		fmt.Fprintln(w, "Welcome to my website!", r1.RequestURI)
+	})
+
+	go http.Serve(ln, nil)
+	ready <- true
+}
+
+func main() {
+	ln, err := net.Listen("tcp", "localhost:0")
+	t := &T{ln}
+	if err != nil {
+		log.Fatal(err)
+	}
+	defer t.Close()
+	//	defer ln.Close()
+
+	ready := make(chan bool)
+	go server(ln, ready)
+	<-ready
+
+	client(fmt.Sprintf("http://%s/hello", ln.Addr().String()))
+	http.DefaultServeMux = &http.ServeMux{}
+}
+
+// Output:
+// Welcome to my website! /hello

_test/complex3.go

@@ -7,5 +7,5 @@ func main() {
 	fmt.Printf("%T %v\n", s, s)
 }
 
-// Output
+// Output:
 // int 2

_test/composite5.go

@@ -0,0 +1,16 @@
+package main
+
+import "fmt"
+
+type T struct {
+	m uint16
+}
+
+var t = T{1<<2 | 1<<3}
+
+func main() {
+	fmt.Println(t)
+}
+
+// Output:
+// {12}

_test/composite6.go

@@ -0,0 +1,20 @@
+package main
+
+import (
+	"fmt"
+
+	"github.com/containous/yaegi/_test/ct1"
+)
+
+type T struct {
+	m uint16
+}
+
+var t = T{1 << ct1.R}
+
+func main() {
+	fmt.Println(t)
+}
+
+// Output:
+// {2}

_test/composite7.go

@@ -0,0 +1,20 @@
+package main
+
+type T struct {
+	name string
+}
+
+var tab = []*T{{
+	name: "foo",
+}, {
+	name: "bar",
+}}
+
+func main() {
+	println(len(tab))
+	println(tab[0].name)
+}
+
+// Output:
+// 2
+// foo

_test/const10.go

@@ -0,0 +1,17 @@
+package main
+
+const (
+	a = 2
+	b = c + d
+	c = a + d
+	d = e + f
+	e = 3
+	f = 4
+)
+
+func main() {
+	println(b)
+}
+
+// Output:
+// 16

_test/const6.go

@@ -0,0 +1,22 @@
+package main
+
+const (
+	maxNonStarters = 30
+	maxBufferSize  = maxNonStarters + 2
+)
+
+type reorderBuffer struct {
+	rune [maxBufferSize]Properties
+}
+
+type Properties struct {
+	pos  uint8
+	size uint8
+}
+
+func main() {
+	println(len(reorderBuffer{}.rune))
+}
+
+// Output:
+// 32

_test/const7.go

@@ -0,0 +1,19 @@
+package main
+
+import "fmt"
+
+const (
+	a = iota
+	b
+	c
+	d
+)
+
+type T [c]int
+
+func main() {
+	fmt.Println(T{})
+}
+
+// Output:
+// [0 0]

_test/const8.go

@@ -0,0 +1,15 @@
+package main
+
+const (
+	a = 2
+	b = c + d
+	c = 4
+	d = 5
+)
+
+func main() {
+	println(a, b, c, d)
+}
+
+// Output:
+// 2 9 4 5

_test/const9.go

@@ -0,0 +1,17 @@
+package main
+
+const (
+	a = 2
+	b = c + d
+	c = a + d
+	d = e + f
+	e = b + 2
+	f = 4
+)
+
+func main() {
+	println(b)
+}
+
+// Error:
+// 5:2: constant definition loop

_test/ct1/ct1.go

@@ -0,0 +1,9 @@
+package ct1
+
+type Class uint
+
+const (
+	L Class = iota
+	R
+	AL
+)

_test/defer4.go

@@ -0,0 +1,23 @@
+package main
+
+import "sync"
+
+type T struct {
+	mu   sync.RWMutex
+	name string
+}
+
+func (t *T) get() string {
+	t.mu.RLock()
+	defer t.mu.RUnlock()
+	return t.name
+}
+
+var d = T{name: "test"}
+
+func main() {
+	println(d.get())
+}
+
+// Output:
+// test

_test/foo-bar/foo-bar.go

@@ -0,0 +1,3 @@
+package bar
+
+var Name = "foo-bar"

_test/for10.go

@@ -0,0 +1,13 @@
+package main
+
+func main() {
+	for a := 0; false; {
+		println("nok", a)
+		a++
+		break
+	}
+	println("bye")
+}
+
+// Output:
+// bye

_test/for11.go

@@ -0,0 +1,14 @@
+package main
+
+func main() {
+	a := 0
+	for ; true; a++ {
+		println("nok", a)
+		break
+	}
+	println("bye", a)
+}
+
+// Output:
+// nok 0
+// bye 0

_test/for12.go

@@ -0,0 +1,12 @@
+package main
+
+func main() {
+	for a := 0; false; a++ {
+		println("nok", a)
+		break
+	}
+	println("bye")
+}
+
+// Output:
+// bye

_test/for13.go

@@ -0,0 +1,13 @@
+package main
+
+func main() {
+	a := 0
+	for ; false; a++ {
+		println("nok", a)
+		break
+	}
+	println("bye", a)
+}
+
+// Output:
+// bye 0

_test/for14.go

@@ -0,0 +1,16 @@
+package main
+
+func main() {
+	for a := 0; true; a++ {
+		println(a)
+		if a > 0 {
+			break
+		}
+	}
+	println("bye")
+}
+
+// Output:
+// 0
+// 1
+// bye

_test/for8.go

@@ -0,0 +1,18 @@
+package main
+
+func main() {
+	for i := 0; i < 4; i++ {
+		for {
+			break
+		}
+		if i == 1 {
+			continue
+		}
+		println(i)
+	}
+}
+
+// Output:
+// 0
+// 2
+// 3

_test/for9.go

@@ -0,0 +1,12 @@
+package main
+
+func main() {
+	for false {
+		println("nok")
+		break
+	}
+	println("bye")
+}
+
+// Output:
+// bye

_test/fun11.go

@@ -0,0 +1,12 @@
+package main
+
+var f F
+
+type F func(int)
+
+func main() {
+	println("ok")
+}
+
+// Output:
+// ok

_test/if3.go

@@ -0,0 +1,17 @@
+package main
+
+func main() {
+	a := 0
+	if false {
+		println("false")
+		a = 1
+	} else {
+		println("true")
+		a = -1
+	}
+	println(a)
+}
+
+// Output:
+// true
+// -1

_test/if4.go

@@ -0,0 +1,19 @@
+package main
+
+const bad = false
+
+func main() {
+	a := 0
+	if bad {
+		println("false")
+		a = 1
+	} else {
+		println("true")
+		a = -1
+	}
+	println(a)
+}
+
+// Output:
+// true
+// -1

_test/if5.go

@@ -0,0 +1,12 @@
+package main
+
+func main() {
+	if true {
+		println("ok")
+	}
+	println("bye")
+}
+
+// Output:
+// ok
+// bye

_test/if6.go

@@ -0,0 +1,11 @@
+package main
+
+func main() {
+	if false {
+		println("nok")
+	}
+	println("bye")
+}
+
+// Output:
+// bye

_test/if7.go

@@ -0,0 +1,15 @@
+package main
+
+func main() {
+	a := 0
+	b := false
+	if (b) {
+		a = 1
+	} else {
+		a = -1
+	}
+	println(a)
+}
+
+// Output:
+// -1

_test/import7.go

@@ -0,0 +1,10 @@
+package main
+
+import "github.com/containous/yaegi/_test/foo-bar"
+
+func main() {
+	println(bar.Name)
+}
+
+// Output:
+// foo-bar

_test/import8.go

@@ -0,0 +1,10 @@
+package main
+
+import "github.com/containous/yaegi/_test/b1/foo"
+
+func main() {
+	println(foo.Desc)
+}
+
+// Output:
+// in b1/foo

_test/interface14.go

@@ -0,0 +1,17 @@
+package main
+
+type T struct{}
+
+func (t *T) Error() string { return "T: error" }
+
+var invalidT = &T{}
+
+func main() {
+	var err error
+	if err != invalidT {
+		println("ok")
+	}
+}
+
+// Output:
+// ok

_test/interface15.go

@@ -0,0 +1,28 @@
+package main
+
+type Fooer interface {
+	Foo() string
+}
+
+type Barer interface {
+	//fmt.Stringer
+	Fooer
+	Bar()
+}
+
+type T struct{}
+
+func (t *T) Foo() string { return "T: foo" }
+func (*T) Bar()          { println("in bar") }
+
+var t = &T{}
+
+func main() {
+	var f Barer
+	if f != t {
+		println("ok")
+	}
+}
+
+// Output:
+// ok

_test/interface16.go

@@ -0,0 +1,25 @@
+package main
+
+import "fmt"
+
+type Barer interface {
+	fmt.Stringer
+	Bar()
+}
+
+type T struct{}
+
+func (*T) String() string { return "T: nothing" }
+func (*T) Bar()           { println("in bar") }
+
+var t = &T{}
+
+func main() {
+	var f Barer
+	if f != t {
+		println("ok")
+	}
+}
+
+// Output:
+// ok

_test/interface17.go

@@ -0,0 +1,17 @@
+package main
+
+type T struct{}
+
+func (t T) Error() string { return "T: error" }
+
+var invalidT = T{}
+
+func main() {
+	var err error
+	if err != invalidT {
+		println("ok")
+	}
+}
+
+// Output:
+// ok

_test/interface18.go

@@ -0,0 +1,18 @@
+package main
+
+type T struct{}
+
+func (t *T) Error() string { return "T: error" }
+func (*T) Foo()            { println("foo") }
+
+var invalidT = &T{}
+
+func main() {
+	var err error
+	if err != invalidT {
+		println("ok")
+	}
+}
+
+// Output:
+// ok

_test/interface19.go

@@ -0,0 +1,12 @@
+package main
+
+import "fmt"
+
+var I interface{}
+
+func main() {
+	fmt.Printf("%T %v\n", I, I)
+}
+
+// Output:
+// <nil> <nil>

_test/interface20.go

@@ -0,0 +1,12 @@
+package main
+
+import "fmt"
+
+func main() {
+	var a interface{}
+	a = string("A")
+	fmt.Println(a)
+}
+
+// Output:
+// A

_test/interface21.go

@@ -0,0 +1,12 @@
+package main
+
+import "fmt"
+
+func main() {
+	s := make([]interface{}, 1)
+	s[0] = 1
+	fmt.Println(s[0])
+}
+
+// Output:
+// 1

_test/interface22.go

@@ -0,0 +1,12 @@
+package main
+
+import "fmt"
+
+func main() {
+	s := make([]interface{}, 0)
+	s = append(s, 1)
+	fmt.Println(s[0])
+}
+
+// Output:
+// 1

_test/interface23.go

@@ -0,0 +1,12 @@
+package main
+
+import "fmt"
+
+func main() {
+	m := make(map[string]interface{})
+	m["A"] = string("A")
+	fmt.Println(m["A"])
+}
+
+// Output:
+// A

_test/interface24.go

@@ -0,0 +1,11 @@
+package main
+
+import "fmt"
+
+func main() {
+	m := make(map[string]interface{})
+	fmt.Println(m["B"])
+}
+
+// Output:
+// <nil>

_test/interface25.go

@@ -0,0 +1,14 @@
+package main
+
+import "fmt"
+
+func main() {
+	m := make(map[string]interface{})
+	m["A"] = 1
+	for _, v := range m {
+		fmt.Println(v)
+	}
+}
+
+// Output:
+// 1

_test/interface26.go

@@ -0,0 +1,14 @@
+package main
+
+import "fmt"
+
+func main() {
+	s := make([]interface{}, 0)
+	s = append(s, 1)
+	for _, v := range s {
+		fmt.Println(v)
+	}
+}
+
+// Output:
+// 1

_test/interface27.go

@@ -0,0 +1,12 @@
+package main
+
+import "fmt"
+
+var errs = map[int]error{0: nil}
+
+func main() {
+	fmt.Println(errs)
+}
+
+// Output:
+// map[0:<nil>]

_test/interface28.go

@@ -0,0 +1,12 @@
+package main
+
+import "fmt"
+
+var errs = []error{nil}
+
+func main() {
+	fmt.Println(errs)
+}
+
+// Output:
+// [<nil>]

_test/interface29.go

@@ -0,0 +1,9 @@
+package main
+
+func main() {
+	var a interface{}
+	println(a == nil)
+}
+
+// Output:
+// true

_test/interface30.go

@@ -0,0 +1,9 @@
+package main
+
+func main() {
+	var a interface{}
+	println(a != nil)
+}
+
+// Output:
+// false

_test/map19.go

@@ -0,0 +1,19 @@
+package main
+
+import "fmt"
+
+type cmap struct {
+	servers map[int64]*server
+}
+
+type server struct {
+	cm *cmap
+}
+
+func main() {
+	m := cmap{}
+	fmt.Println(m)
+}
+
+// Output:
+// {map[]}

_test/map20.go

@@ -0,0 +1,10 @@
+package main
+
+var a = map[int]bool{1: true, 2: true}
+
+func main() {
+	println(a[1] && true)
+}
+
+// Output:
+// true

_test/map21.go

@@ -0,0 +1,15 @@
+package main
+
+var m = map[int]string{
+	1: "foo",
+}
+
+func main() {
+	var ok bool
+	if _, ok = m[1]; ok {
+		println("ok")
+	}
+}
+
+// Output:
+// ok

_test/map22.go

@@ -0,0 +1,14 @@
+package main
+
+var m = map[int]string{
+	1: "foo",
+}
+
+func main() {
+	var s string
+	s, _ = m[1]
+	println(s)
+}
+
+// Output:
+// foo

_test/map23.go

@@ -0,0 +1,13 @@
+package main
+
+var m = map[int]string{
+	1: "foo",
+}
+
+func main() {
+	_, _ = m[1]
+	println("ok")
+}
+
+// Output:
+// ok

_test/method29.go

@@ -0,0 +1,16 @@
+package main
+
+import (
+	"context"
+	"net"
+)
+
+var lookupHost = net.DefaultResolver.LookupHost
+
+func main() {
+	res, err := lookupHost(context.Background(), "localhost")
+	println(len(res) > 0, err == nil)
+}
+
+// Output:
+// true true

_test/method30.go

@@ -0,0 +1,20 @@
+package main
+
+type T struct {
+	Name string
+}
+
+func (t *T) foo(a string) string {
+	return t.Name + a
+}
+
+var g = &T{"global"}
+
+var f = g.foo
+
+func main() {
+	println(f("-x"))
+}
+
+// Output:
+// global-x

_test/method31.go

@@ -0,0 +1,29 @@
+package main
+
+import "fmt"
+
+var db dbWrapper
+
+type dbWrapper struct {
+	DB *cmap
+}
+
+func (d *dbWrapper) get() *cmap {
+	return d.DB
+}
+
+type cmap struct {
+	name string
+}
+
+func (c *cmap) f() {
+	fmt.Println("in f, c", c)
+}
+
+func main() {
+	db.DB = &cmap{name: "test"}
+	db.get().f()
+}
+
+// Output:
+// in f, c &{test}

_test/nil0.go

@@ -0,0 +1,15 @@
+package main
+
+import "fmt"
+
+func f() (host, port string, err error) {
+	return "", "", nil
+}
+
+func main() {
+	h, p, err := f()
+	fmt.Println(h, p, err)
+}
+
+// Output:
+//   <nil>

_test/nil1.go

@@ -0,0 +1,12 @@
+package main
+
+func main() {
+	var a error = nil
+
+	if a == nil || a.Error() == "nil" {
+		println("a is nil")
+	}
+}
+
+// Output:
+// a is nil

_test/or0.go

@@ -0,0 +1,9 @@
+package main
+
+func main() {
+	c := false
+	println(c || !c)
+}
+
+// Output:
+// true

_test/or1.go

@@ -0,0 +1,9 @@
+package main
+
+func main() {
+	c := false
+	println(!c || c)
+}
+
+// Output:
+// true

_test/or2.go

@@ -0,0 +1,10 @@
+package main
+
+var a = false || true
+
+func main() {
+	println(a)
+}
+
+// Output:
+// true

_test/primes.go

@@ -0,0 +1,26 @@
+package main
+
+func Primes(n int) int {
+	var xs []int
+	for i := 2; len(xs) < n; i++ {
+		ok := true
+		for _, x := range xs {
+			if i%x == 0 {
+				ok = false
+				break
+			}
+		}
+		if !ok {
+			continue
+		}
+		xs = append(xs, i)
+	}
+	return xs[n-1]
+}
+
+func main() {
+	println(Primes(3))
+}
+
+// Output:
+// 5

_test/ptr8.go

@@ -0,0 +1,10 @@
+package main
+
+var a = func() *bool { b := true; return &b }()
+
+func main() {
+	println(*a && true)
+}
+
+// Output:
+// true

_test/str4.go

@@ -0,0 +1,11 @@
+package main
+
+import "unicode/utf8"
+
+func main() {
+	r, _ := utf8.DecodeRuneInString("Hello")
+	println(r < utf8.RuneSelf)
+}
+
+// Output:
+// true

_test/struct29.go

@@ -0,0 +1,19 @@
+package main
+
+type T1 struct {
+	A []T2
+	B []T2
+}
+
+type T2 struct {
+	name string
+}
+
+var t = T1{}
+
+func main() {
+	println("ok")
+}
+
+// Output:
+// ok

_test/struct30.go

@@ -0,0 +1,19 @@
+package main
+
+type T1 struct {
+	A []T2
+	M map[uint64]T2
+}
+
+type T2 struct {
+	name string
+}
+
+var t = T1{}
+
+func main() {
+	println("ok")
+}
+
+// Output:
+// ok

_test/struct31.go

@@ -0,0 +1,14 @@
+package main
+
+type T struct {
+	bool
+}
+
+var t = T{true}
+
+func main() {
+	println(t.bool && true)
+}
+
+// Output:
+// true

_test/struct32.go

@@ -0,0 +1,39 @@
+package main
+
+type T0 struct {
+	name string
+}
+
+type lookupFunc func(s string) T0
+
+type T1 struct {
+	name string
+	info lookupFunc
+}
+
+func (t T0) F1() bool { println("in F1"); return true }
+
+type T2 struct {
+	t1 T1
+}
+
+func (t2 *T2) f() {
+	info := t2.t1.info("foo")
+	println(info.F1())
+}
+
+var t0 = T0{"t0"}
+
+func main() {
+	t := &T2{T1{
+		"bar", func(s string) T0 { return t0 },
+	}}
+
+	println("hello")
+	println(t.t1.info("foo").F1())
+}
+
+// Output:
+// hello
+// in F1
+// true

_test/struct33.go

@@ -0,0 +1,34 @@
+package main
+
+type T0 struct {
+	name string
+}
+
+type lookupFunc func(s string) T0
+
+type T1 struct {
+	name string
+	info lookupFunc
+}
+
+func (t T0) F1() bool { println("in F1"); return true }
+
+var t0 = T0{"t0"}
+
+func look(s string) T0 { println("in look"); return t0 }
+
+var table = []*T1{{
+	name: "bar",
+	info: look,
+},
+}
+
+func main() {
+	info := table[0].info
+	println(info("foo").F1())
+}
+
+// Output:
+// in look
+// in F1
+// true

_test/struct34.go

@@ -0,0 +1,16 @@
+package main
+
+type T struct {
+	f func(*T)
+}
+
+func f1(t *T) { t.f = f2 }
+
+func f2(t *T) { t.f = f1 }
+
+func main() {
+	println("ok")
+}
+
+// Output:
+// ok

_test/struct35.go

@@ -0,0 +1,16 @@
+package main
+
+type T struct {
+	f func(*T)
+}
+
+func f1(t *T) { t.f = f1 }
+
+func main() {
+	t := &T{}
+	f1(t)
+	println(t.f != nil)
+}
+
+// Output:
+// true

_test/struct36.go

@@ -0,0 +1,21 @@
+package main
+
+import (
+	"net/http"
+	"strings"
+)
+
+type S struct {
+	http.Client
+}
+
+func main() {
+	var s S
+	if _, err := s.Get("url"); err != nil {
+		println(strings.Contains(err.Error(), "unsupported protocol scheme"))
+	}
+	return
+}
+
+// Output:
+// true

_test/struct37.go

@@ -0,0 +1,17 @@
+package main
+
+import (
+	"net/http"
+	"strings"
+)
+
+type MyHttpClient struct {
+	*http.Client
+}
+
+func main() {
+	c := new(MyHttpClient)
+	c.Client = new(http.Client)
+	_, err := c.Get("url")
+	println(strings.Contains(err.Error(), "unsupported protocol scheme"))
+}

_test/struct38.go

@@ -0,0 +1,24 @@
+package main
+
+type T struct {
+	f func(t *T1)
+	y *xxx
+}
+
+type T1 struct {
+	T
+}
+
+type xxx struct{}
+
+var (
+	x1 *T1 = x
+	x      = &T1{}
+)
+
+func main() {
+	println("ok")
+}
+
+// Output:
+// ok

_test/switch22.go

@@ -0,0 +1,21 @@
+package main
+
+type T struct {
+	Name string
+}
+
+func f(t interface{}) {
+	switch ext := t.(type) {
+	case *T:
+		println("*T", ext.Name)
+	default:
+		println("unknown")
+	}
+}
+
+func main() {
+	f(&T{"truc"})
+}
+
+// Output:
+// *T truc

_test/switch23.go

@@ -0,0 +1,15 @@
+package main
+
+func getType() string { return "T1" }
+
+func main() {
+	switch getType() {
+	case "T1":
+		println("T1")
+	default:
+		println("default")
+	}
+}
+
+// Output:
+// T1

_test/switch24.go

@@ -0,0 +1,16 @@
+package main
+
+func main() {
+	a := 3
+	switch a + 2 {
+	case 5:
+		println(5)
+	default:
+		println("default")
+	}
+	println("bye")
+}
+
+// Output:
+// 5
+// bye

_test/switch25.go

@@ -0,0 +1,18 @@
+package main
+
+func main() {
+	a := 2
+	switch {
+	case a == 1:
+		println(1)
+	case a == 2:
+		println(2)
+	default:
+		println("default")
+	}
+	println("bye")
+}
+
+// Output:
+// 2
+// bye

_test/switch26.go

@@ -0,0 +1,18 @@
+package main
+
+func main() {
+	a := 1
+	switch a := 2; {
+	case a == 1:
+		println(1)
+	case a == 2:
+		println(2)
+	default:
+		println("default")
+	}
+	println(a)
+}
+
+// Output:
+// 2
+// 1

_test/switch27.go

@@ -0,0 +1,16 @@
+package main
+
+func main() {
+	//a := false
+	switch false {
+	case true:
+		println("true")
+	case false:
+		println("false")
+	}
+	println("bye")
+}
+
+// Output:
+// false
+// bye

_test/switch28.go

@@ -0,0 +1,15 @@
+package main
+
+func main() {
+	switch {
+	case true:
+		println("true")
+	case false:
+		println("false")
+	}
+	println("bye")
+}
+
+// Output:
+// true
+// bye

_test/switch29.go

@@ -0,0 +1,14 @@
+package main
+
+func main() {
+	a := 3
+	switch a {
+	case 3:
+		println("three")
+	}
+	println("bye")
+}
+
+// Output:
+// three
+// bye

_test/switch30.go

@@ -0,0 +1,16 @@
+package main
+
+func main() {
+	a := 3
+	switch a {
+	default:
+		//println("default")
+	case 3:
+		println("three")
+	}
+	println("bye")
+}
+
+// Output:
+// three
+// bye

_test/switch31.go

@@ -0,0 +1,10 @@
+package main
+
+func main() {
+	switch {
+	}
+	println("bye")
+}
+
+// Output:
+// bye

_test/switch32.go

@@ -0,0 +1,11 @@
+package main
+
+func main() {
+	a := 1
+	switch a {
+	}
+	println("bye", a)
+}
+
+// Output:
+// bye 1

_test/switch33.go

@@ -0,0 +1,11 @@
+package main
+
+func main() {
+	var a interface{}
+	switch a.(type) {
+	}
+	println("bye")
+}
+
+// Output:
+// bye

_test/time11.go

@@ -0,0 +1,15 @@
+package main
+
+import (
+	"fmt"
+	"time"
+)
+
+const df = time.Minute * 30
+
+func main() {
+	fmt.Printf("df: %v %T\n", df, df)
+}
+
+// Output:
+// df: 30m0s time.Duration

_test/type15.go

@@ -0,0 +1,9 @@
+package main
+
+func main() {
+	err := error(nil)
+	println(err == nil)
+}
+
+// Output:
+// true

_test/type16.go

@@ -0,0 +1,11 @@
+package main
+
+import "fmt"
+
+func main() {
+	a := uint8(15) ^ byte(0)
+	fmt.Printf("%T %v\n", a, a)
+}
+
+// Output:
+// uint8 15