// Copyright 2021 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.

package resolution

type List /* =@List */ [E /* =@E */ any] []E // @E

type Pair /* =@Pair */ [L /* =@L */, R /* =@R */ any] struct {
	Left /* =@Left */ L // @L
	Right /* =@Right */ R // @R
	L /* =@Lfield */ int
}

var _ = Pair /* @Pair */ [int, string]{}

type Addable /* =@Addable */ interface {
	~int64|~float64
}

func Add /* =@AddDecl */[T /* =@T */ Addable /* @Addable */](l /* =@l */, r /* =@r */ T /* @T */) T /* @T */ {
	var t /* =@t */ T /* @T */
	return l /* @l */ + r /* @r */ + t /* @t */
}

type Receiver /* =@Receiver */[P /* =@P */ any] struct {}

type RP /* =@RP1 */ struct{}

// TODO(rFindley): make a decision on how/whether to resolve identifiers that
// refer to receiver type parameters, as is the case for the 'P' result
// parameter below.
//
// For now, we ensure that types are not incorrectly resolved when receiver
// type parameters are in scope.
func (r /* =@recv */ Receiver /* @Receiver */ [RP]) m(RP) RP {}

func f /* =@f */[T1 /* =@T1 */ interface{~[]T2 /* @T2 */}, T2 /* =@T2 */ any](
  x /* =@x */ T1 /* @T1 */, T1 /* =@T1_duplicate */ y,  // Note that this is a bug:
                                                        // the duplicate T1 should
							// not be allowed.
  ){
  // Note that duplicate short var declarations resolve to their alt declaration.
  x /* @x */ := 0
  y /* =@y */ := 0
  T1 /* @T1 */ := 0
  var t1var /* =@t1var */ T1 /* @T1 */
}

// From go.dev/issue/39634
func(*ph1[e, e])h(d)