dalet/specification/daletpack.md

DaletPack specification for Dalet v1.0-preview

DaletPack is an binary data format for Dalet, that is used for minimizing the size of transmitted daletl data. DaletPack is designed specifically to transfer as little data as possible, it compresses the declaration of tag types into the smallest possible volume. Nothing unnecessary is transferred.

All data must be compressed in Zstandard format.

Types (12)

• Null (1)
• Integer (1)
• String (6)
• Array (3)
• Tags (3)
  • Tag only with id (1)
  • Tag with id and body (1)
  • Tag with id, body and argument (1)

Limitations

• a value of integer (5 bits) must be between -15 and 15
• maximum byte size of a String object is (2^32)-1
• string must be encoded in UTF-8
• maximum number of elements of an Array object is (2^32)-1

Formats

Overview

name	id	id-bits
null	0	0000
int	1	0001
str 3	2	0010
str 4	3	0011
str 6	4	0100
str 8	5	0101
str 16	6	0110
str 32	7	0111
arr 2	8	1000
arr 4	9	1001
arr 8	10	1010
arr 16	11	1011
arr 32	12	1100
tag (id)	13	1101
tag (id, body)	14	1110
tag (id, body, argument)	15	1111