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// 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.
// This file contains test cases for typeset-only constraint elements.
// TODO(gri) gofmt once/if gofmt supports this notation.
package p
type (
_[_ t] t
_[_ ~t] t
_[_ t|t] t
_[_ ~t|t] t
_[_ t|~t] t
_[_ ~t|~t] t
_[_ t, _, _ t|t] t
_[_ t, _, _ ~t|t] t
_[_ t, _, _ t|~t] t
_[_ t, _, _ ~t|~t] t
_[_ t.t] t
_[_ ~t.t] t
_[_ t.t|t.t] t
_[_ ~t.t|t.t] t
_[_ t.t|~t.t] t
_[_ ~t.t|~t.t] t
_[_ t, _, _ t.t|t.t] t
_[_ t, _, _ ~t.t|t.t] t
_[_ t, _, _ t.t|~t.t] t
_[_ t, _, _ ~t.t|~t.t] t
_[_ struct{}] t
_[_ ~struct{}] t
_[_ struct{}|t] t
_[_ ~struct{}|t] t
_[_ struct{}|~t] t
_[_ ~struct{}|~t] t
_[_ t|struct{}] t
_[_ ~t|struct{}] t
_[_ t|~struct{}] t
_[_ ~t|~struct{}] t
)
// Single-expression type parameter lists and those that don't start
// with a (type parameter) name are considered array sizes.
// The term must be a valid expression (it could be a type incl. a
// tilde term) but the type-checker will complain.
type (
_[t] t
_[t|t] t
// These are invalid and the type-checker will complain.
_[~t] t
_[~t|t] t
_[t|~t] t
_[~t|~t] t
)
type _[_ t, t] /* ERROR "missing type constraint" */ t
type _[_ ~t, t] /* ERROR "missing type constraint" */ t
type _[_ t, ~ /* ERROR "missing type parameter name" */ t] t
type _[_ ~t, ~ /* ERROR "missing type parameter name" */ t] t
type _[_ t|t, t /* ERROR "missing type parameter name" */ |t] t
type _[_ ~t|t, t /* ERROR "missing type parameter name" */ |t] t
type _[_ t|t, ~ /* ERROR "missing type parameter name" */ t|t] t
type _[_ ~t|t, ~ /* ERROR "missing type parameter name" */ t|t] t