111 lines
2.0 KiB
Go
111 lines
2.0 KiB
Go
/*
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* Copyright 2020 The Dragonfly Authors
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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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//go:generate mockgen -destination mocks/safe_set_mock.go -source safe_set.go -package mocks
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package set
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import (
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"sync"
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)
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type SafeSet interface {
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Values() []any
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Add(any) bool
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Delete(any)
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Contains(...any) bool
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Len() uint
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Range(func(any) bool)
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Clear()
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}
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type safeSet struct {
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mu *sync.RWMutex
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data map[any]struct{}
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}
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func NewSafeSet() SafeSet {
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return &safeSet{
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mu: &sync.RWMutex{},
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data: make(map[any]struct{}),
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}
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}
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func (s *safeSet) Values() []any {
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var result []any
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s.Range(func(v any) bool {
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result = append(result, v)
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return true
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})
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return result
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}
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func (s *safeSet) Add(v any) bool {
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s.mu.RLock()
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_, found := s.data[v]
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if found {
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s.mu.RUnlock()
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return false
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}
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s.mu.RUnlock()
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s.mu.Lock()
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defer s.mu.Unlock()
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s.data[v] = struct{}{}
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return true
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}
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func (s *safeSet) Delete(v any) {
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s.mu.Lock()
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defer s.mu.Unlock()
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delete(s.data, v)
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}
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func (s *safeSet) Contains(vals ...any) bool {
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s.mu.RLock()
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defer s.mu.RUnlock()
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for _, v := range vals {
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if _, ok := s.data[v]; !ok {
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return false
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}
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}
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return true
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}
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func (s *safeSet) Len() uint {
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s.mu.RLock()
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defer s.mu.RUnlock()
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return uint(len(s.data))
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}
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func (s *safeSet) Range(fn func(any) bool) {
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s.mu.RLock()
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defer s.mu.RUnlock()
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for v := range s.data {
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if !fn(v) {
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break
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}
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}
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}
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func (s *safeSet) Clear() {
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s.mu.Lock()
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defer s.mu.Unlock()
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s.data = make(map[any]struct{})
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}
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