// license that can be found in the LICENSE file.

package main

type Chan[T any] chan Chan[T]

func (ch Chan[T]) recv() Chan[T] {
	return <-ch
}

func main() {
	ch := Chan[int](make(chan Chan[int]))
	go func() {
		ch <- make(Chan[int])
	}()
	ch.recv()

		// In this case, the type of f is an interface that is itself the receiver
		// type of all of its methods. Because we have no type name to break
		// cycles, substituting in the recv results in an infinite loop of
		// recv->interface->recv->interface->...
		recv := t.recv

		params := subst.tuple(t.params)
		results := subst.tuple(t.results)
		if params != t.params || results != t.results {
			return &Signature{
				rparams: t.rparams,

func isTimeDotFormat(f *types.Func) bool {
	if f.Name() != "Format" || f.Pkg() == nil || f.Pkg().Path() != "time" {
		return false
	}
	// Verify that the receiver is time.Time.
	recv := f.Type().(*types.Signature).Recv()
	return recv != nil && analysisutil.IsNamedType(recv.Type(), "time", "Time")
}

func isTimeDotParse(f *types.Func) bool {
	return analysisutil.IsFunctionNamed(f, "time", "Parse")
}

	for i := 0; i < iface.NumExplicitMethods(); i++ {
		m := iface.ExplicitMethod(i)
		recv := m.Type().(*types.Signature).Recv()
		if recv == nil {
			t.Errorf("%s: missing receiver type", m)
			continue
		}
		if recv.Type() != named {
			t.Errorf("%s: got recv type %s; want %s", m, recv.Type(), named)
		}
	}

	// check embedded interfaces (they are named, too)

}
`

func parse(name, s string) *template.Template {
	t, err := template.New(name).Parse(s)
	if err != nil {
		panic(fmt.Sprintf("%q: %s", name, err))
	}
	return t
}

var recv = parse("recv", `
	{{/*  Send n, receive it one way or another into x, check that they match. */}}
	c <- n
	{{if .Maybe}}
	x = <-c
	{{else}}
	select {
	{{/*  Blocking or non-blocking, before the receive. */}}

	mv := reflect.ValueOf(m)
	it.Reset(mv)
}

func recv1(ch chan string) string { // ERROR "ch does not escape"
	v := reflect.ValueOf(ch)
	r, _ := v.Recv()
	return r.String()
}

func recv2(ch chan string) string { // ERROR "ch does not escape"
	v := reflect.ValueOf(ch)
	r, _ := v.TryRecv()
	return r.String()
}

			if err != nil {
				t.Fatalf("parse failed!: %d %v %s", i, err, tc)
			}

			// Read only the first json object from the file
			recs, err := getJSONStructs(b)
			if err != nil || len(recs) != 3 {
				t.Fatalf("%v or length was not 3", err)
			}

			for j, rec := range recs {
				// fmt.Println(rec)
				r, _, err := jsonpathEval(jp.PathExpr, rec)
				if err != nil {
					t.Errorf("Error: %d %d %v", i, j, err)
				}

	}
	// function doesn't exist or has no documentation; use f
	recv := ""
	if f.Recv != nil {
		var typ ast.Expr
		// be careful in case of incorrect ASTs
		if list := f.Recv.List; len(list) == 1 {
			typ = list[0].Type
		}
		recv = recvString(typ)
	}
	mset[name] = &Func{
		Doc:  f.Doc.Text(),
		Name: name,
		Decl: f,
		Recv: recv,
		Orig: recv,
	}
	if !preserveAST {

//
// If recv == "", HasSym reports whether the package has a top-level
// const, func, type, or var named name.
//
// If recv != "", HasSym reports whether the package has a type
// named recv with a method named name.
func (p *Package) lookupSym(recv, name string) bool {
	if recv != "" {
		return p.syms[recv+"."+name]
	}
	return p.syms[name]
}

			baseURL += "/"
		}
		switch {
		case l.Name == "":
			return baseURL + l.ImportPath + slash
		case l.Recv != "":
			return baseURL + l.ImportPath + slash + "#" + l.Recv + "." + l.Name
		default:
			return baseURL + l.ImportPath + slash + "#" + l.Name
		}
	}
	if l.Recv != "" {
		return "#" + l.Recv + "." + l.Name
	}
	return "#" + l.Name
}

// DefaultID returns the default anchor ID for the heading h.