forked from kubernetes/autoscaler
/
convert.go
147 lines (128 loc) · 3.47 KB
/
convert.go
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/*
Package to provides helpers to ease working with pointer values of marshalled structures.
*/
package to
// Copyright 2017 Microsoft Corporation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// String returns a string value for the passed string pointer. It returns the empty string if the
// pointer is nil.
func String(s *string) string {
if s != nil {
return *s
}
return ""
}
// StringPtr returns a pointer to the passed string.
func StringPtr(s string) *string {
return &s
}
// StringSlice returns a string slice value for the passed string slice pointer. It returns a nil
// slice if the pointer is nil.
func StringSlice(s *[]string) []string {
if s != nil {
return *s
}
return nil
}
// StringSlicePtr returns a pointer to the passed string slice.
func StringSlicePtr(s []string) *[]string {
return &s
}
// StringMap returns a map of strings built from the map of string pointers. The empty string is
// used for nil pointers.
func StringMap(msp map[string]*string) map[string]string {
ms := make(map[string]string, len(msp))
for k, sp := range msp {
if sp != nil {
ms[k] = *sp
} else {
ms[k] = ""
}
}
return ms
}
// StringMapPtr returns a pointer to a map of string pointers built from the passed map of strings.
func StringMapPtr(ms map[string]string) *map[string]*string {
msp := make(map[string]*string, len(ms))
for k, s := range ms {
msp[k] = StringPtr(s)
}
return &msp
}
// Bool returns a bool value for the passed bool pointer. It returns false if the pointer is nil.
func Bool(b *bool) bool {
if b != nil {
return *b
}
return false
}
// BoolPtr returns a pointer to the passed bool.
func BoolPtr(b bool) *bool {
return &b
}
// Int returns an int value for the passed int pointer. It returns 0 if the pointer is nil.
func Int(i *int) int {
if i != nil {
return *i
}
return 0
}
// IntPtr returns a pointer to the passed int.
func IntPtr(i int) *int {
return &i
}
// Int32 returns an int value for the passed int pointer. It returns 0 if the pointer is nil.
func Int32(i *int32) int32 {
if i != nil {
return *i
}
return 0
}
// Int32Ptr returns a pointer to the passed int32.
func Int32Ptr(i int32) *int32 {
return &i
}
// Int64 returns an int value for the passed int pointer. It returns 0 if the pointer is nil.
func Int64(i *int64) int64 {
if i != nil {
return *i
}
return 0
}
// Int64Ptr returns a pointer to the passed int64.
func Int64Ptr(i int64) *int64 {
return &i
}
// Float32 returns an int value for the passed int pointer. It returns 0.0 if the pointer is nil.
func Float32(i *float32) float32 {
if i != nil {
return *i
}
return 0.0
}
// Float32Ptr returns a pointer to the passed float32.
func Float32Ptr(i float32) *float32 {
return &i
}
// Float64 returns an int value for the passed int pointer. It returns 0.0 if the pointer is nil.
func Float64(i *float64) float64 {
if i != nil {
return *i
}
return 0.0
}
// Float64Ptr returns a pointer to the passed float64.
func Float64Ptr(i float64) *float64 {
return &i
}