Class LongArray

g2all/700/module/view.js:160–199

export class Word extends VariableMixin(View4) {}

export class LongArray {
  constructor(length) {
    this.buffer = new DataView(new ArrayBuffer(length * 8));
  }

  get addr() {
    return mt.get_view_vector(this.buffer);
  }

  addr_at(index) {
    return this.addr.add(index * 8);
  }

  get length() {
    return this.buffer.length / 8;
  }

  get size() {
    return this.buffer.byteLength;
  }

  get byteLength() {
    return this.size;
  }

  get(index) {
    const buffer = this.buffer;
    const base = index * 8;
    return new Int(buffer.getUint32(base, true), buffer.getUint32(base + 4, true));
  }

  set(index, value) {
    const buffer = this.buffer;
    const base = index * 8;
    const values = lohi_from_one(value);

    buffer.setUint32(base, values[0], true);
    buffer.setUint32(base + 4, values[1], true);
  }
}

// mutable Int (we are explicitly using Int's private fields)
const Word64Mixin = (superclass) =>