X-Git-Url: https://git.piment-noir.org/?a=blobdiff_plain;f=src%2Fcircular-buffer.ts;h=5015483b290055e1a78e961c248024625800b6d6;hb=1352ca70c0b5c6b4ff3813b0c24354b5514b2796;hp=2975ef7797389b2cb370c0184de493c81fe85ed7;hpb=12c589b6bbb06466d2168e4867ff51c4b45d3bd3;p=poolifier.git

diff --git a/src/circular-buffer.ts b/src/circular-buffer.ts
index 2975ef77..5015483b 100644
--- a/src/circular-buffer.ts
+++ b/src/circular-buffer.ts
@@ -4,17 +4,14 @@
 export const defaultBufferSize = 2048
 
 /**
- * Circular buffer.
- *
- * @typeParam T - Type of buffer data.
+ * Circular buffer designed for positive numbers.
  * @internal
  */
-export class CircularBuffer<T> {
+export class CircularBuffer {
   private readIdx: number
   private writeIdx: number
-  private items: Array<T | undefined>
+  private readonly items: Float32Array
   private readonly maxArrayIdx: number
-  /* Buffer number of elements */
   public size: number
 
   /**
@@ -27,12 +24,11 @@ export class CircularBuffer<T> {
     this.writeIdx = 0
     this.maxArrayIdx = size - 1
     this.size = 0
-    this.items = new Array<T | undefined>(size)
+    this.items = new Float32Array(size).fill(-1)
   }
 
   /**
    * Checks whether the buffer is empty.
-   *
    * @returns Whether the buffer is empty.
    */
   public empty (): boolean {
@@ -41,7 +37,6 @@ export class CircularBuffer<T> {
 
   /**
    * Checks whether the buffer is full.
-   *
    * @returns Whether the buffer is full.
    */
   public full (): boolean {
@@ -49,12 +44,11 @@ export class CircularBuffer<T> {
   }
 
   /**
-   * Puts data into buffer.
-   *
-   * @param data - Data to put into buffer.
+   * Puts number into buffer.
+   * @param number - Number to put into buffer.
    */
-  public put (data: T): void {
-    this.items[this.writeIdx] = data
+  public put (number: number): void {
+    this.items[this.writeIdx] = number
     this.writeIdx = this.writeIdx === this.maxArrayIdx ? 0 : this.writeIdx + 1
     if (this.size < this.items.length) {
       ++this.size
@@ -62,38 +56,42 @@ export class CircularBuffer<T> {
   }
 
   /**
-   * Gets data from buffer.
-   *
-   * @returns Data from buffer.
+   * Gets number from buffer.
+   * @returns Number from buffer.
    */
-  public get (): T | undefined {
-    const data = this.items[this.readIdx]
-    if (data == null) {
+  public get (): number | undefined {
+    const number = this.items[this.readIdx]
+    if (number === -1) {
       return
     }
-    this.items[this.readIdx] = undefined
+    this.items[this.readIdx] = -1
     this.readIdx = this.readIdx === this.maxArrayIdx ? 0 : this.readIdx + 1
     --this.size
-    return data
+    return number
   }
 
   /**
-   * Returns buffer as array.
-   *
-   * @returns Array of buffer data.
+   * Returns buffer as numbers' array.
+   * @returns Numbers' array.
    */
-  public toArray (): T[] {
-    return this.items.filter(item => item != null) as T[]
+  public toArray (): number[] {
+    return Array.from(this.items.filter(item => item !== -1))
   }
 
+  /**
+   * Checks the buffer size.
+   * @param size - Buffer size.
+   */
   private checkSize (size: number): void {
     if (!Number.isSafeInteger(size)) {
       throw new TypeError(
-        `Invalid circular buffer size: ${size} is not an integer`
+        `Invalid circular buffer size: '${size.toString()}' is not an integer`
       )
     }
     if (size < 0) {
-      throw new RangeError(`Invalid circular buffer size: ${size} < 0`)
+      throw new RangeError(
+        `Invalid circular buffer size: ${size.toString()} < 0`
+      )
     }
   }
 }