github.com/cockroachdb/tools@v0.0.0-20230222021103-a6d27438930d/cmd/stringer/testdata/typeparams/prime2.go (about)

     1  // Copyright 2021 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  // This is a version of ../prime.go with type params
     6  
     7  // Enough gaps to trigger a map implementation of the method.
     8  // Also includes a duplicate to test that it doesn't cause problems
     9  
    10  package main
    11  
    12  import "fmt"
    13  
    14  // For now, a lone type parameter is not permitted as RHS in a type declaration (issue #45639).
    15  // type Likeint[T interface{ ~int | ~uint8 }] T
    16  type Likeint int
    17  
    18  // type Prime2 Likeint[int]
    19  type Prime2 Likeint
    20  
    21  const (
    22  	p2  Prime2 = 2
    23  	p3  Prime2 = 3
    24  	p5  Prime2 = 5
    25  	p7  Prime2 = 7
    26  	p77 Prime2 = 7 // Duplicate; note that p77 doesn't appear below.
    27  	p11 Prime2 = 11
    28  	p13 Prime2 = 13
    29  	p17 Prime2 = 17
    30  	p19 Prime2 = 19
    31  	p23 Prime2 = 23
    32  	p29 Prime2 = 29
    33  	p37 Prime2 = 31
    34  	p41 Prime2 = 41
    35  	p43 Prime2 = 43
    36  )
    37  
    38  func main() {
    39  	ck(0, "Prime2(0)")
    40  	ck(1, "Prime2(1)")
    41  	ck(p2, "p2")
    42  	ck(p3, "p3")
    43  	ck(4, "Prime2(4)")
    44  	ck(p5, "p5")
    45  	ck(p7, "p7")
    46  	ck(p77, "p7")
    47  	ck(p11, "p11")
    48  	ck(p13, "p13")
    49  	ck(p17, "p17")
    50  	ck(p19, "p19")
    51  	ck(p23, "p23")
    52  	ck(p29, "p29")
    53  	ck(p37, "p37")
    54  	ck(p41, "p41")
    55  	ck(p43, "p43")
    56  	ck(44, "Prime2(44)")
    57  }
    58  
    59  func ck(prime Prime2, str string) {
    60  	if fmt.Sprint(prime) != str {
    61  		panic("prime2.go: " + str)
    62  	}
    63  }