Method ensure_space

deps/v8/test/mjsunit/wasm/wasm-module-builder.js:1125–1132

(needed)

  }

  ensure_space(needed) {
    if (this.buffer.length - this.length >= needed) return;
    let new_capacity = this.buffer.length * 2;
    while (new_capacity - this.length < needed) new_capacity *= 2;
    let new_buffer = new Uint8Array(new_capacity);
    new_buffer.set(this.buffer);
    this.buffer = new_buffer;
  }

  trunc_buffer() {
    return new Uint8Array(this.buffer.buffer, 0, this.length);