X-Git-Url: https://git.piment-noir.org/?a=blobdiff_plain;f=src%2Fdeque.ts;h=257643726383945d81960ec2cd7be0c04d26eecb;hb=b97b9dc23cec0006fb59ac15197d666307ab8cf5;hp=00f60e6f7256c5204969ac827d4533cfaf177994;hpb=67f3f2d6cb8f915ec71f81c4533ab80a6c6a6f0f;p=poolifier.git

diff --git a/src/deque.ts b/src/deque.ts
index 00f60e6f..25764372 100644
--- a/src/deque.ts
+++ b/src/deque.ts
@@ -1,19 +1,15 @@
-// Copyright Jerome Benoit. 2023. All Rights Reserved.
+// Copyright Jerome Benoit. 2023-2024. All Rights Reserved.
 
 /**
- * Node.
+ * Linked list node interface.
  *
- * @typeParam T - Type of node data.
+ * @typeParam T - Type of linked list node data.
  * @internal
  */
-export class Node<T> {
-  public data: T
-  public next?: Node<T>
-  public prev?: Node<T>
-
-  public constructor (data: T) {
-    this.data = data
-  }
+export interface ILinkedListNode<T> {
+  data: T
+  next?: ILinkedListNode<T>
+  prev?: ILinkedListNode<T>
 }
 
 /**
@@ -24,8 +20,8 @@ export class Node<T> {
  * @internal
  */
 export class Deque<T> {
-  private head?: Node<T>
-  private tail?: Node<T>
+  private head?: ILinkedListNode<T>
+  private tail?: ILinkedListNode<T>
   /** The size of the deque. */
   public size!: number
   /** The maximum size of the deque. */
@@ -42,11 +38,10 @@ export class Deque<T> {
    * @returns The new size of the queue.
    */
   public push (data: T): number {
-    const node = new Node(data)
+    const node = { data, prev: this.tail }
     if (this.tail == null) {
       this.head = this.tail = node
     } else {
-      node.prev = this.tail
       this.tail = this.tail.next = node
     }
     return this.incrementSize()
@@ -59,11 +54,10 @@ export class Deque<T> {
    * @returns The new size of the queue.
    */
   public unshift (data: T): number {
-    const node = new Node(data)
+    const node = { data, next: this.head }
     if (this.head == null) {
       this.head = this.tail = node
     } else {
-      node.next = this.head
       this.head = this.head.prev = node
     }
     return this.incrementSize()
@@ -79,8 +73,7 @@ export class Deque<T> {
       return
     }
     const tail = this.tail
-    // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
-    this.tail = this.tail!.prev
+    this.tail = this.tail?.prev
     if (this.tail == null) {
       delete this.head
     } else {
@@ -107,7 +100,7 @@ export class Deque<T> {
       delete this.head.prev
     }
     --this.size
-    return head?.data
+    return head.data
   }
 
   /**
@@ -156,8 +149,7 @@ export class Deque<T> {
           value: node.data,
           done: false
         }
-        // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
-        node = node.next!
+        node = node.next
         return ret
       }
     }
@@ -185,8 +177,7 @@ export class Deque<T> {
               value: node.data,
               done: false
             }
-            // eslint-disable-next-line @typescript-eslint/no-non-null-assertion
-            node = node.prev!
+            node = node.prev
             return ret
           }
         }