bool unserialize()

in sparseconvnet/SCN/Metadata/sparsehash/internal/densehashtable.h [1132:1161]

• 27 lines of code
• 12 McCabe index (conditional complexity)

  bool unserialize(ValueSerializer serializer, INPUT *fp) {
    assert(settings.use_empty() && "empty_key not set for read");

    clear();                        // just to be consistent
    MagicNumberType magic_read;
    if ( !sparsehash_internal::read_bigendian_number(fp, &magic_read, 4) )
      return false;
    if ( magic_read != MAGIC_NUMBER ) {
      return false;
    }
    size_type new_num_buckets;
    if ( !sparsehash_internal::read_bigendian_number(fp, &new_num_buckets, 8) )
      return false;
    clear_to_size(new_num_buckets);
    if ( !sparsehash_internal::read_bigendian_number(fp, &num_elements, 8) )
      return false;

    // Read the bitmap of non-empty buckets.
    for (size_type i = 0; i < num_buckets; i += 8) {
      unsigned char bits;
      if ( !sparsehash_internal::read_data(fp, &bits, sizeof(bits)) )
        return false;
      for ( int bit = 0; bit < 8; ++bit ) {
        if ( i + bit < num_buckets && (bits & (1 << bit)) ) {  // not empty
          if ( !serializer(fp, &table[i + bit]) ) return false;
        }
      }
    }
    return true;
  }