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-rw-r--r--vendor/sigs.k8s.io/structured-merge-diff/v4/value/valuereflect.go294
1 files changed, 0 insertions, 294 deletions
diff --git a/vendor/sigs.k8s.io/structured-merge-diff/v4/value/valuereflect.go b/vendor/sigs.k8s.io/structured-merge-diff/v4/value/valuereflect.go
deleted file mode 100644
index 05e70deba..000000000
--- a/vendor/sigs.k8s.io/structured-merge-diff/v4/value/valuereflect.go
+++ /dev/null
@@ -1,294 +0,0 @@
-/*
-Copyright 2019 The Kubernetes Authors.
-
-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.
-*/
-
-package value
-
-import (
- "encoding/base64"
- "fmt"
- "reflect"
-)
-
-// NewValueReflect creates a Value backed by an "interface{}" type,
-// typically an structured object in Kubernetes world that is uses reflection to expose.
-// The provided "interface{}" value must be a pointer so that the value can be modified via reflection.
-// The provided "interface{}" may contain structs and types that are converted to Values
-// by the jsonMarshaler interface.
-func NewValueReflect(value interface{}) (Value, error) {
- if value == nil {
- return NewValueInterface(nil), nil
- }
- v := reflect.ValueOf(value)
- if v.Kind() != reflect.Ptr {
- // The root value to reflect on must be a pointer so that map.Set() and map.Delete() operations are possible.
- return nil, fmt.Errorf("value provided to NewValueReflect must be a pointer")
- }
- return wrapValueReflect(v, nil, nil)
-}
-
-// wrapValueReflect wraps the provide reflect.Value as a value. If parent in the data tree is a map, parentMap
-// and parentMapKey must be provided so that the returned value may be set and deleted.
-func wrapValueReflect(value reflect.Value, parentMap, parentMapKey *reflect.Value) (Value, error) {
- val := HeapAllocator.allocValueReflect()
- return val.reuse(value, nil, parentMap, parentMapKey)
-}
-
-// wrapValueReflect wraps the provide reflect.Value as a value, and panics if there is an error. If parent in the data
-// tree is a map, parentMap and parentMapKey must be provided so that the returned value may be set and deleted.
-func mustWrapValueReflect(value reflect.Value, parentMap, parentMapKey *reflect.Value) Value {
- v, err := wrapValueReflect(value, parentMap, parentMapKey)
- if err != nil {
- panic(err)
- }
- return v
-}
-
-// the value interface doesn't care about the type for value.IsNull, so we can use a constant
-var nilType = reflect.TypeOf(&struct{}{})
-
-// reuse replaces the value of the valueReflect. If parent in the data tree is a map, parentMap and parentMapKey
-// must be provided so that the returned value may be set and deleted.
-func (r *valueReflect) reuse(value reflect.Value, cacheEntry *TypeReflectCacheEntry, parentMap, parentMapKey *reflect.Value) (Value, error) {
- if cacheEntry == nil {
- cacheEntry = TypeReflectEntryOf(value.Type())
- }
- if cacheEntry.CanConvertToUnstructured() {
- u, err := cacheEntry.ToUnstructured(value)
- if err != nil {
- return nil, err
- }
- if u == nil {
- value = reflect.Zero(nilType)
- } else {
- value = reflect.ValueOf(u)
- }
- }
- r.Value = dereference(value)
- r.ParentMap = parentMap
- r.ParentMapKey = parentMapKey
- r.kind = kind(r.Value)
- return r, nil
-}
-
-// mustReuse replaces the value of the valueReflect and panics if there is an error. If parent in the data tree is a
-// map, parentMap and parentMapKey must be provided so that the returned value may be set and deleted.
-func (r *valueReflect) mustReuse(value reflect.Value, cacheEntry *TypeReflectCacheEntry, parentMap, parentMapKey *reflect.Value) Value {
- v, err := r.reuse(value, cacheEntry, parentMap, parentMapKey)
- if err != nil {
- panic(err)
- }
- return v
-}
-
-func dereference(val reflect.Value) reflect.Value {
- kind := val.Kind()
- if (kind == reflect.Interface || kind == reflect.Ptr) && !safeIsNil(val) {
- return val.Elem()
- }
- return val
-}
-
-type valueReflect struct {
- ParentMap *reflect.Value
- ParentMapKey *reflect.Value
- Value reflect.Value
- kind reflectType
-}
-
-func (r valueReflect) IsMap() bool {
- return r.kind == mapType || r.kind == structMapType
-}
-
-func (r valueReflect) IsList() bool {
- return r.kind == listType
-}
-
-func (r valueReflect) IsBool() bool {
- return r.kind == boolType
-}
-
-func (r valueReflect) IsInt() bool {
- return r.kind == intType || r.kind == uintType
-}
-
-func (r valueReflect) IsFloat() bool {
- return r.kind == floatType
-}
-
-func (r valueReflect) IsString() bool {
- return r.kind == stringType || r.kind == byteStringType
-}
-
-func (r valueReflect) IsNull() bool {
- return r.kind == nullType
-}
-
-type reflectType = int
-
-const (
- mapType = iota
- structMapType
- listType
- intType
- uintType
- floatType
- stringType
- byteStringType
- boolType
- nullType
-)
-
-func kind(v reflect.Value) reflectType {
- typ := v.Type()
- rk := typ.Kind()
- switch rk {
- case reflect.Map:
- if v.IsNil() {
- return nullType
- }
- return mapType
- case reflect.Struct:
- return structMapType
- case reflect.Int, reflect.Int64, reflect.Int32, reflect.Int16, reflect.Int8:
- return intType
- case reflect.Uint, reflect.Uint32, reflect.Uint16, reflect.Uint8:
- // Uint64 deliberately excluded, see valueUnstructured.Int.
- return uintType
- case reflect.Float64, reflect.Float32:
- return floatType
- case reflect.String:
- return stringType
- case reflect.Bool:
- return boolType
- case reflect.Slice:
- if v.IsNil() {
- return nullType
- }
- elemKind := typ.Elem().Kind()
- if elemKind == reflect.Uint8 {
- return byteStringType
- }
- return listType
- case reflect.Chan, reflect.Func, reflect.Ptr, reflect.UnsafePointer, reflect.Interface:
- if v.IsNil() {
- return nullType
- }
- panic(fmt.Sprintf("unsupported type: %v", v.Type()))
- default:
- panic(fmt.Sprintf("unsupported type: %v", v.Type()))
- }
-}
-
-// TODO find a cleaner way to avoid panics from reflect.IsNil()
-func safeIsNil(v reflect.Value) bool {
- k := v.Kind()
- switch k {
- case reflect.Chan, reflect.Func, reflect.Map, reflect.Ptr, reflect.UnsafePointer, reflect.Interface, reflect.Slice:
- return v.IsNil()
- }
- return false
-}
-
-func (r valueReflect) AsMap() Map {
- return r.AsMapUsing(HeapAllocator)
-}
-
-func (r valueReflect) AsMapUsing(a Allocator) Map {
- switch r.kind {
- case structMapType:
- v := a.allocStructReflect()
- v.valueReflect = r
- return v
- case mapType:
- v := a.allocMapReflect()
- v.valueReflect = r
- return v
- default:
- panic("value is not a map or struct")
- }
-}
-
-func (r valueReflect) AsList() List {
- return r.AsListUsing(HeapAllocator)
-}
-
-func (r valueReflect) AsListUsing(a Allocator) List {
- if r.IsList() {
- v := a.allocListReflect()
- v.Value = r.Value
- return v
- }
- panic("value is not a list")
-}
-
-func (r valueReflect) AsBool() bool {
- if r.IsBool() {
- return r.Value.Bool()
- }
- panic("value is not a bool")
-}
-
-func (r valueReflect) AsInt() int64 {
- if r.kind == intType {
- return r.Value.Int()
- }
- if r.kind == uintType {
- return int64(r.Value.Uint())
- }
-
- panic("value is not an int")
-}
-
-func (r valueReflect) AsFloat() float64 {
- if r.IsFloat() {
- return r.Value.Float()
- }
- panic("value is not a float")
-}
-
-func (r valueReflect) AsString() string {
- switch r.kind {
- case stringType:
- return r.Value.String()
- case byteStringType:
- return base64.StdEncoding.EncodeToString(r.Value.Bytes())
- }
- panic("value is not a string")
-}
-
-func (r valueReflect) Unstructured() interface{} {
- val := r.Value
- switch {
- case r.IsNull():
- return nil
- case val.Kind() == reflect.Struct:
- return structReflect{r}.Unstructured()
- case val.Kind() == reflect.Map:
- return mapReflect{valueReflect: r}.Unstructured()
- case r.IsList():
- return listReflect{r.Value}.Unstructured()
- case r.IsString():
- return r.AsString()
- case r.IsInt():
- return r.AsInt()
- case r.IsBool():
- return r.AsBool()
- case r.IsFloat():
- return r.AsFloat()
- default:
- panic(fmt.Sprintf("value of type %s is not a supported by value reflector", val.Type()))
- }
-}