import { registerSync } from './reconstruct.ts';

export class Int32Atomic {
  static readonly byteSize = 4;
  static readonly byteAlignment = 4;
  private readonly view: Int32Array;

  constructor(buffer?: SharedArrayBuffer, byteOffset?: number) {
    const buf = buffer ?? new SharedArrayBuffer(4);
    const offset = byteOffset ?? 0;
    this.view = new Int32Array(buf, offset, 1);
  }

  load(): number {
    return Atomics.load(this.view, 0);
  }

  store(value: number): void {
    Atomics.store(this.view, 0, value);
  }

  add(value: number): number {
    return Atomics.add(this.view, 0, value);
  }

  sub(value: number): number {
    return Atomics.sub(this.view, 0, value);
  }

  and(value: number): number {
    return Atomics.and(this.view, 0, value);
  }

  or(value: number): number {
    return Atomics.or(this.view, 0, value);
  }

  xor(value: number): number {
    return Atomics.xor(this.view, 0, value);
  }

  exchange(value: number): number {
    return Atomics.exchange(this.view, 0, value);
  }

  compareExchange(expected: number, replacement: number): number {
    return Atomics.compareExchange(this.view, 0, expected, replacement);
  }

  [Symbol.for('moroutine.shared')](): { tag: string; buffer: SharedArrayBuffer; byteOffset: number } {
    return { tag: 'Int32Atomic', buffer: this.view.buffer as SharedArrayBuffer, byteOffset: this.view.byteOffset };
  }
}

registerSync('Int32Atomic', Int32Atomic);