github.com/maypok86/otter@v1.2.1/internal/expiry/fixed.go (about)

     1  // Copyright (c) 2024 Alexey Mayshev. All rights reserved.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  //     http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  
    15  package expiry
    16  
    17  import "github.com/maypok86/otter/internal/generated/node"
    18  
    19  type Fixed[K comparable, V any] struct {
    20  	q *queue[K, V]
    21  }
    22  
    23  func NewFixed[K comparable, V any]() *Fixed[K, V] {
    24  	return &Fixed[K, V]{
    25  		q: newQueue[K, V](),
    26  	}
    27  }
    28  
    29  func (f *Fixed[K, V]) Add(n node.Node[K, V]) {
    30  	f.q.push(n)
    31  }
    32  
    33  func (f *Fixed[K, V]) Delete(n node.Node[K, V]) {
    34  	f.q.remove(n)
    35  }
    36  
    37  func (f *Fixed[K, V]) RemoveExpired(expired []node.Node[K, V]) []node.Node[K, V] {
    38  	for !f.q.isEmpty() && f.q.head.HasExpired() {
    39  		expired = append(expired, f.q.pop())
    40  	}
    41  	return expired
    42  }
    43  
    44  func (f *Fixed[K, V]) Clear() {
    45  	f.q.clear()
    46  }