/***
 * Allocates the given string in the given application's memory
 */
function alloc_bytes(app, data)
{
  let stdlib_types___alloc_bytes__ = app.instance.exports['stdlib.types.__alloc_bytes__']

  if( typeof data == 'string' ) {
    // TODO: Unicode
    data = Uint8Array.from(data.split('').map(x => x.charCodeAt()));
  }

  let offset = stdlib_types___alloc_bytes__(data.length);
  let i8arr = new Uint8Array(app.instance.exports.memory.buffer, offset + 4, data.length);
  i8arr.set(data);

  return offset;
}

/**
 * WebAssembly's interface only gets you signed integers
 *
 * Getting unsigned values out requires some work.
 */
function i32_to_u32(n)
{
  return n >>> 0;
}