diff options
Diffstat (limited to 'vendor/sigs.k8s.io/structured-merge-diff/v4/value/value.go')
-rw-r--r-- | vendor/sigs.k8s.io/structured-merge-diff/v4/value/value.go | 347 |
1 files changed, 0 insertions, 347 deletions
diff --git a/vendor/sigs.k8s.io/structured-merge-diff/v4/value/value.go b/vendor/sigs.k8s.io/structured-merge-diff/v4/value/value.go deleted file mode 100644 index ea79e3a00..000000000 --- a/vendor/sigs.k8s.io/structured-merge-diff/v4/value/value.go +++ /dev/null @@ -1,347 +0,0 @@ -/* -Copyright 2018 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 ( - "bytes" - "fmt" - "io" - "strings" - - jsoniter "github.com/json-iterator/go" - "gopkg.in/yaml.v2" -) - -var ( - readPool = jsoniter.NewIterator(jsoniter.ConfigCompatibleWithStandardLibrary).Pool() - writePool = jsoniter.NewStream(jsoniter.ConfigCompatibleWithStandardLibrary, nil, 1024).Pool() -) - -// A Value corresponds to an 'atom' in the schema. It should return true -// for at least one of the IsXXX methods below, or the value is -// considered "invalid" -type Value interface { - // IsMap returns true if the Value is a Map, false otherwise. - IsMap() bool - // IsList returns true if the Value is a List, false otherwise. - IsList() bool - // IsBool returns true if the Value is a bool, false otherwise. - IsBool() bool - // IsInt returns true if the Value is a int64, false otherwise. - IsInt() bool - // IsFloat returns true if the Value is a float64, false - // otherwise. - IsFloat() bool - // IsString returns true if the Value is a string, false - // otherwise. - IsString() bool - // IsMap returns true if the Value is null, false otherwise. - IsNull() bool - - // AsMap converts the Value into a Map (or panic if the type - // doesn't allow it). - AsMap() Map - // AsMapUsing uses the provided allocator and converts the Value - // into a Map (or panic if the type doesn't allow it). - AsMapUsing(Allocator) Map - // AsList converts the Value into a List (or panic if the type - // doesn't allow it). - AsList() List - // AsListUsing uses the provided allocator and converts the Value - // into a List (or panic if the type doesn't allow it). - AsListUsing(Allocator) List - // AsBool converts the Value into a bool (or panic if the type - // doesn't allow it). - AsBool() bool - // AsInt converts the Value into an int64 (or panic if the type - // doesn't allow it). - AsInt() int64 - // AsFloat converts the Value into a float64 (or panic if the type - // doesn't allow it). - AsFloat() float64 - // AsString converts the Value into a string (or panic if the type - // doesn't allow it). - AsString() string - - // Unstructured converts the Value into an Unstructured interface{}. - Unstructured() interface{} -} - -// FromJSON is a helper function for reading a JSON document. -func FromJSON(input []byte) (Value, error) { - return FromJSONFast(input) -} - -// FromJSONFast is a helper function for reading a JSON document. -func FromJSONFast(input []byte) (Value, error) { - iter := readPool.BorrowIterator(input) - defer readPool.ReturnIterator(iter) - return ReadJSONIter(iter) -} - -// ToJSON is a helper function for producing a JSon document. -func ToJSON(v Value) ([]byte, error) { - buf := bytes.Buffer{} - stream := writePool.BorrowStream(&buf) - defer writePool.ReturnStream(stream) - WriteJSONStream(v, stream) - b := stream.Buffer() - err := stream.Flush() - // Help jsoniter manage its buffers--without this, the next - // use of the stream is likely to require an allocation. Look - // at the jsoniter stream code to understand why. They were probably - // optimizing for folks using the buffer directly. - stream.SetBuffer(b[:0]) - return buf.Bytes(), err -} - -// ReadJSONIter reads a Value from a JSON iterator. -func ReadJSONIter(iter *jsoniter.Iterator) (Value, error) { - v := iter.Read() - if iter.Error != nil && iter.Error != io.EOF { - return nil, iter.Error - } - return NewValueInterface(v), nil -} - -// WriteJSONStream writes a value into a JSON stream. -func WriteJSONStream(v Value, stream *jsoniter.Stream) { - stream.WriteVal(v.Unstructured()) -} - -// ToYAML marshals a value as YAML. -func ToYAML(v Value) ([]byte, error) { - return yaml.Marshal(v.Unstructured()) -} - -// Equals returns true iff the two values are equal. -func Equals(lhs, rhs Value) bool { - return EqualsUsing(HeapAllocator, lhs, rhs) -} - -// EqualsUsing uses the provided allocator and returns true iff the two values are equal. -func EqualsUsing(a Allocator, lhs, rhs Value) bool { - if lhs.IsFloat() || rhs.IsFloat() { - var lf float64 - if lhs.IsFloat() { - lf = lhs.AsFloat() - } else if lhs.IsInt() { - lf = float64(lhs.AsInt()) - } else { - return false - } - var rf float64 - if rhs.IsFloat() { - rf = rhs.AsFloat() - } else if rhs.IsInt() { - rf = float64(rhs.AsInt()) - } else { - return false - } - return lf == rf - } - if lhs.IsInt() { - if rhs.IsInt() { - return lhs.AsInt() == rhs.AsInt() - } - return false - } else if rhs.IsInt() { - return false - } - if lhs.IsString() { - if rhs.IsString() { - return lhs.AsString() == rhs.AsString() - } - return false - } else if rhs.IsString() { - return false - } - if lhs.IsBool() { - if rhs.IsBool() { - return lhs.AsBool() == rhs.AsBool() - } - return false - } else if rhs.IsBool() { - return false - } - if lhs.IsList() { - if rhs.IsList() { - lhsList := lhs.AsListUsing(a) - defer a.Free(lhsList) - rhsList := rhs.AsListUsing(a) - defer a.Free(rhsList) - return lhsList.EqualsUsing(a, rhsList) - } - return false - } else if rhs.IsList() { - return false - } - if lhs.IsMap() { - if rhs.IsMap() { - lhsList := lhs.AsMapUsing(a) - defer a.Free(lhsList) - rhsList := rhs.AsMapUsing(a) - defer a.Free(rhsList) - return lhsList.EqualsUsing(a, rhsList) - } - return false - } else if rhs.IsMap() { - return false - } - if lhs.IsNull() { - if rhs.IsNull() { - return true - } - return false - } else if rhs.IsNull() { - return false - } - // No field is set, on either objects. - return true -} - -// ToString returns a human-readable representation of the value. -func ToString(v Value) string { - if v.IsNull() { - return "null" - } - switch { - case v.IsFloat(): - return fmt.Sprintf("%v", v.AsFloat()) - case v.IsInt(): - return fmt.Sprintf("%v", v.AsInt()) - case v.IsString(): - return fmt.Sprintf("%q", v.AsString()) - case v.IsBool(): - return fmt.Sprintf("%v", v.AsBool()) - case v.IsList(): - strs := []string{} - list := v.AsList() - for i := 0; i < list.Length(); i++ { - strs = append(strs, ToString(list.At(i))) - } - return "[" + strings.Join(strs, ",") + "]" - case v.IsMap(): - strs := []string{} - v.AsMap().Iterate(func(k string, v Value) bool { - strs = append(strs, fmt.Sprintf("%v=%v", k, ToString(v))) - return true - }) - return strings.Join(strs, "") - } - // No field is set, on either objects. - return "{{undefined}}" -} - -// Less provides a total ordering for Value (so that they can be sorted, even -// if they are of different types). -func Less(lhs, rhs Value) bool { - return Compare(lhs, rhs) == -1 -} - -// Compare provides a total ordering for Value (so that they can be -// sorted, even if they are of different types). The result will be 0 if -// v==rhs, -1 if v < rhs, and +1 if v > rhs. -func Compare(lhs, rhs Value) int { - return CompareUsing(HeapAllocator, lhs, rhs) -} - -// CompareUsing uses the provided allocator and provides a total -// ordering for Value (so that they can be sorted, even if they -// are of different types). The result will be 0 if v==rhs, -1 -// if v < rhs, and +1 if v > rhs. -func CompareUsing(a Allocator, lhs, rhs Value) int { - if lhs.IsFloat() { - if !rhs.IsFloat() { - // Extra: compare floats and ints numerically. - if rhs.IsInt() { - return FloatCompare(lhs.AsFloat(), float64(rhs.AsInt())) - } - return -1 - } - return FloatCompare(lhs.AsFloat(), rhs.AsFloat()) - } else if rhs.IsFloat() { - // Extra: compare floats and ints numerically. - if lhs.IsInt() { - return FloatCompare(float64(lhs.AsInt()), rhs.AsFloat()) - } - return 1 - } - - if lhs.IsInt() { - if !rhs.IsInt() { - return -1 - } - return IntCompare(lhs.AsInt(), rhs.AsInt()) - } else if rhs.IsInt() { - return 1 - } - - if lhs.IsString() { - if !rhs.IsString() { - return -1 - } - return strings.Compare(lhs.AsString(), rhs.AsString()) - } else if rhs.IsString() { - return 1 - } - - if lhs.IsBool() { - if !rhs.IsBool() { - return -1 - } - return BoolCompare(lhs.AsBool(), rhs.AsBool()) - } else if rhs.IsBool() { - return 1 - } - - if lhs.IsList() { - if !rhs.IsList() { - return -1 - } - lhsList := lhs.AsListUsing(a) - defer a.Free(lhsList) - rhsList := rhs.AsListUsing(a) - defer a.Free(rhsList) - return ListCompareUsing(a, lhsList, rhsList) - } else if rhs.IsList() { - return 1 - } - if lhs.IsMap() { - if !rhs.IsMap() { - return -1 - } - lhsMap := lhs.AsMapUsing(a) - defer a.Free(lhsMap) - rhsMap := rhs.AsMapUsing(a) - defer a.Free(rhsMap) - return MapCompareUsing(a, lhsMap, rhsMap) - } else if rhs.IsMap() { - return 1 - } - if lhs.IsNull() { - if !rhs.IsNull() { - return -1 - } - return 0 - } else if rhs.IsNull() { - return 1 - } - - // Invalid Value-- nothing is set. - return 0 -} |