Module codecs 

Haystack wire format codecs for serialization and deserialization.

Provides the Codec trait and five built-in implementations:

MIME Type	Module	Description
text/zinc	zinc	Zinc — the default Haystack text format (fastest encode/decode)
text/trio	trio	Trio — tag-oriented format for defining entities and defs
application/json	json (v4)	Haystack JSON v4 — standard JSON encoding
application/json;v=3	json (v3)	Haystack JSON v3 — legacy JSON encoding
text/csv	csv	CSV — comma-separated values for spreadsheet interop

Additional output-only codecs:

Module	Description
rdf	RDF serialization in Turtle and JSON-LD formats

Use codec_for() to look up a codec by MIME type:

use haystack_core::codecs::codec_for;

let zinc = codec_for("text/zinc").unwrap();
let grid = zinc.decode_grid("ver:\"3.0\"\nempty\n").unwrap();
let encoded = zinc.encode_grid(&grid).unwrap();

The shared submodule provides common encoding/decoding helper functions used by multiple codec implementations.

Modules

csv

CSV wire format codec for Haystack grids.

json

rdf

RDF serialization of Haystack entities in Turtle and JSON-LD formats.

shared

Shared formatting helpers used by multiple codecs.

trio

zinc

Enums

CodecError

Errors that can occur during encoding or decoding.

Constants

HBF_MIME

MIME type for Haystack Binary Format.

Traits

Codec

Trait for Haystack wire format codecs.

Functions

codec_for

Look up a codec by MIME type.