mirror of https://github.com/minio/minio.git
158 lines
3.1 KiB
Go
158 lines
3.1 KiB
Go
/*
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* Minio Cloud Storage, (C) 2018 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package condition
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import (
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"encoding/json"
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"fmt"
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"reflect"
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"strconv"
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)
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// Value - is enum type of string, int or bool.
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type Value struct {
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t reflect.Kind
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s string
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i int
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b bool
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}
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// GetBool - gets stored bool value.
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func (v Value) GetBool() (bool, error) {
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var err error
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if v.t != reflect.Bool {
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err = fmt.Errorf("not a bool Value")
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}
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return v.b, err
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}
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// GetInt - gets stored int value.
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func (v Value) GetInt() (int, error) {
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var err error
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if v.t != reflect.Int {
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err = fmt.Errorf("not a int Value")
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}
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return v.i, err
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}
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// GetString - gets stored string value.
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func (v Value) GetString() (string, error) {
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var err error
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if v.t != reflect.String {
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err = fmt.Errorf("not a string Value")
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}
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return v.s, err
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}
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// GetType - gets enum type.
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func (v Value) GetType() reflect.Kind {
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return v.t
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}
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// MarshalJSON - encodes Value to JSON data.
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func (v Value) MarshalJSON() ([]byte, error) {
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switch v.t {
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case reflect.String:
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return json.Marshal(v.s)
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case reflect.Int:
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return json.Marshal(v.i)
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case reflect.Bool:
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return json.Marshal(v.b)
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}
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return nil, fmt.Errorf("unknown value kind %v", v.t)
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}
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// StoreBool - stores bool value.
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func (v *Value) StoreBool(b bool) {
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*v = Value{t: reflect.Bool, b: b}
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}
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// StoreInt - stores int value.
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func (v *Value) StoreInt(i int) {
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*v = Value{t: reflect.Int, i: i}
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}
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// StoreString - stores string value.
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func (v *Value) StoreString(s string) {
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*v = Value{t: reflect.String, s: s}
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}
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// String - returns string representation of value.
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func (v Value) String() string {
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switch v.t {
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case reflect.String:
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return v.s
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case reflect.Int:
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return strconv.Itoa(v.i)
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case reflect.Bool:
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return strconv.FormatBool(v.b)
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}
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return ""
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}
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// UnmarshalJSON - decodes JSON data.
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func (v *Value) UnmarshalJSON(data []byte) error {
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var b bool
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if err := json.Unmarshal(data, &b); err == nil {
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v.StoreBool(b)
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return nil
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}
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var i int
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if err := json.Unmarshal(data, &i); err == nil {
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v.StoreInt(i)
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return nil
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}
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var s string
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if err := json.Unmarshal(data, &s); err == nil {
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v.StoreString(s)
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return nil
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}
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return fmt.Errorf("unknown json data '%v'", data)
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}
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// NewBoolValue - returns new bool value.
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func NewBoolValue(b bool) Value {
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value := &Value{}
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value.StoreBool(b)
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return *value
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}
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// NewIntValue - returns new int value.
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func NewIntValue(i int) Value {
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value := &Value{}
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value.StoreInt(i)
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return *value
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}
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// NewStringValue - returns new string value.
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func NewStringValue(s string) Value {
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value := &Value{}
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value.StoreString(s)
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return *value
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}
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