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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:23:18 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-16 19:23:18 +0000 |
commit | 43a123c1ae6613b3efeed291fa552ecd909d3acf (patch) | |
tree | fd92518b7024bc74031f78a1cf9e454b65e73665 /test/typeparam/issue48716.dir | |
parent | Initial commit. (diff) | |
download | golang-1.20-43a123c1ae6613b3efeed291fa552ecd909d3acf.tar.xz golang-1.20-43a123c1ae6613b3efeed291fa552ecd909d3acf.zip |
Adding upstream version 1.20.14.upstream/1.20.14upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'test/typeparam/issue48716.dir')
-rw-r--r-- | test/typeparam/issue48716.dir/a.go | 51 | ||||
-rw-r--r-- | test/typeparam/issue48716.dir/main.go | 58 |
2 files changed, 109 insertions, 0 deletions
diff --git a/test/typeparam/issue48716.dir/a.go b/test/typeparam/issue48716.dir/a.go new file mode 100644 index 0000000..63e599d --- /dev/null +++ b/test/typeparam/issue48716.dir/a.go @@ -0,0 +1,51 @@ +// 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 a + +type Pair[L, R any] struct { + L L + R R +} + +func Two[L, R any](l L, r R) Pair[L, R] { + return Pair[L, R]{L: l, R: r} +} + +type Map[K, V any] interface { + Put(K, V) + Len() int + Iterate(func(Pair[K, V]) bool) +} + +type HashMap[K comparable, V any] struct { + m map[K]V +} + +func NewHashMap[K comparable, V any](capacity int) HashMap[K, V] { + var m map[K]V + if capacity >= 1 { + m = make(map[K]V, capacity) + } else { + m = map[K]V{} + } + + return HashMap[K, V]{m: m} +} + +func (m HashMap[K, V]) Put(k K, v V) { + m.m[k] = v +} + +func (m HashMap[K, V]) Len() int { + return len(m.m) +} + +func (m HashMap[K, V]) Iterate(cb func(Pair[K, V]) bool) { + for k, v := range m.m { + if !cb(Two(k, v)) { + return + } + } +} diff --git a/test/typeparam/issue48716.dir/main.go b/test/typeparam/issue48716.dir/main.go new file mode 100644 index 0000000..13a126e --- /dev/null +++ b/test/typeparam/issue48716.dir/main.go @@ -0,0 +1,58 @@ +// 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 main + +import ( + "./a" +) + +// Creates copy of set +func Copy[T comparable](src MapSet[T]) (dst MapSet[T]) { + dst = HashSet[T](src.Len()) + Fill(src, dst) + return +} + +// Fill src from dst +func Fill[T any](src, dst MapSet[T]) { + src.Iterate(func(t T) bool { + dst.Add(t) + return true + }) + return +} + +type MapSet[T any] struct { + m a.Map[T, struct{}] +} + +func HashSet[T comparable](capacity int) MapSet[T] { + return FromMap[T](a.NewHashMap[T, struct{}](capacity)) +} + +func FromMap[T any](m a.Map[T, struct{}]) MapSet[T] { + return MapSet[T]{ + m: m, + } +} + +func (s MapSet[T]) Add(t T) { + s.m.Put(t, struct{}{}) +} + +func (s MapSet[T]) Len() int { + return s.m.Len() +} + +func (s MapSet[T]) Iterate(cb func(T) bool) { + s.m.Iterate(func(p a.Pair[T, struct{}]) bool { + return cb(p.L) + }) +} + +func main() { + x := FromMap[int](a.NewHashMap[int, struct{}](1)) + Copy[int](x) +} |