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// Copyright (c) Tailscale Inc & contributors
// SPDX-License-Identifier: BSD-3-Clause
//go:generate go run tailscale.com/cmd/cloner -clonefunc=true -type SliceContainer,InterfaceContainer,MapWithPointers,DeeplyNestedMap,NamedMapContainer,MapSlicePointerContainer
// Package clonerex is an example package for the cloner tool.
package clonerex
type SliceContainer struct {
Slice []*int
}
// Cloneable is an interface with a Clone method.
type Cloneable interface {
Clone() Cloneable
}
// CloneableImpl is a concrete type that implements Cloneable.
type CloneableImpl struct {
Value int
}
func (c *CloneableImpl) Clone() Cloneable {
if c == nil {
return nil
}
return &CloneableImpl{Value: c.Value}
}
// InterfaceContainer has a pointer to an interface field, which tests
// the special handling for interface types in the cloner.
type InterfaceContainer struct {
Interface Cloneable
}
type MapWithPointers struct {
Nested map[string]*int
WithCloneMethod map[string]*SliceContainer
CloneInterface map[string]Cloneable
}
// NamedMap is a named map type with its own Clone method.
// This tests that the cloner uses the type's Clone method
// rather than trying to descend into the map's value type.
type NamedMap map[string]any
func (m NamedMap) Clone() NamedMap {
if m == nil {
return nil
}
m2 := make(NamedMap, len(m))
for k, v := range m {
m2[k] = v
}
return m2
}
// NamedMapContainer has a field whose type is a named map with a Clone method.
type NamedMapContainer struct {
Attrs NamedMap
}
// MapSlicePointerContainer has a map whose values are slices of pointers.
// This tests that the cloner deep-clones the pointer elements in the slice,
// not just the slice itself (which would leave aliased pointers).
type MapSlicePointerContainer struct {
Routes map[string][]*SliceContainer
}
// DeeplyNestedMap tests arbitrary depth of map nesting (3+ levels)
type DeeplyNestedMap struct {
ThreeLevels map[string]map[string]map[string]int
FourLevels map[string]map[string]map[string]map[string]*SliceContainer
}
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