@thi.ng/wasm-api/pointer.js

Generic, modular, extensible API bridge and infrastructure for hybrid JS & WebAssembly projects

class Pointer {
  constructor(mem, base, fn) {
    this.mem = mem;
    this.base = base;
    this.fn = fn;
  }
  get addr() {
    this.mem.ensureMemory();
    return this.mem.u32[this.base >>> 2];
  }
  set addr(addr) {
    this.mem.ensureMemory();
    this.mem.u32[this.base >>> 2] = addr;
  }
  get isNull() {
    return this.addr === 0;
  }
  deref() {
    const addr = this.addr;
    return addr ? this.fn(addr) : void 0;
  }
}
class Pointer64 {
  constructor(mem, base, fn) {
    this.mem = mem;
    this.base = base;
    this.fn = fn;
  }
  get addr() {
    this.mem.ensureMemory();
    return this.mem.u64[Number(this.base >> BigInt(3))];
  }
  set addr(addr) {
    this.mem.ensureMemory();
    this.mem.u64[Number(this.base >> BigInt(3))] = addr;
  }
  get isNull() {
    return this.addr === 0n;
  }
  deref() {
    const addr = this.addr;
    return addr ? this.fn(addr) : void 0;
  }
}
export {
  Pointer,
  Pointer64
};