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enum.go
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enum.go
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// Copyright © 2022 Kaleido, Inc.
//
// SPDX-License-Identifier: Apache-2.0
//
// 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 fftypes
import (
"context"
"database/sql/driver"
"strings"
"github.com/hyperledger/firefly-common/pkg/i18n"
)
type FFEnum string
var enumValues = map[string][]interface{}{}
func FFEnumValue(t string, val string) FFEnum {
enumValues[t] = append(enumValues[t], val)
return FFEnum(val)
}
func FFEnumValues(t string) []interface{} {
return enumValues[t]
}
func (ts FFEnum) String() string {
return strings.ToLower(string(ts))
}
func (ts FFEnum) Lower() FFEnum {
return FFEnum(strings.ToLower(string(ts)))
}
func (ts FFEnum) Equals(ts2 FFEnum) bool {
return strings.EqualFold(string(ts), string(ts2))
}
func (ts FFEnum) Value() (driver.Value, error) {
return ts.String(), nil
}
func (ts *FFEnum) UnmarshalText(b []byte) error {
*ts = FFEnum(strings.ToLower(string(b)))
return nil
}
func FFEnumParseString(ctx context.Context, t string, i string) (FFEnum, error) {
e, ok := enumValues[strings.ToLower(t)]
if !ok {
return "", i18n.NewError(ctx, i18n.MsgInvalidEnum, t)
}
for _, val := range e {
if val == strings.ToLower(i) {
return FFEnum(strings.ToLower(i)), nil
}
}
return "", i18n.NewError(ctx, i18n.MsgInvalidEnumValue, i, t, e)
}