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Open-IM-Server/pkg/errs/relation.go

57 lines
1.4 KiB

// Copyright © 2023 OpenIM. All rights reserved.
//
// 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 errs
var Relation = &relation{m: make(map[int]map[int]struct{})}
func init() {
Relation.Add(RecordNotFoundError, UserIDNotFoundError)
Relation.Add(RecordNotFoundError, GroupIDNotFoundError)
Relation.Add(DuplicateKeyError, GroupIDExisted)
}
type relation struct {
m map[int]map[int]struct{}
}
func (r *relation) Add(codes ...int) {
if len(codes) < 2 {
panic("codes length must be greater than 2")
}
for i := 1; i < len(codes); i++ {
parent := codes[i-1]
s, ok := r.m[parent]
if !ok {
s = make(map[int]struct{})
r.m[parent] = s
}
for _, code := range codes[i:] {
s[code] = struct{}{}
}
}
}
func (r *relation) Is(parent, child int) bool {
if parent == child {
return true
}
s, ok := r.m[parent]
if !ok {
return false
}
_, ok = s[child]
return ok
}