TOON-LD Core Library

High-performance serializer/parser for TOON-LD (Token-Oriented Object Notation for Linked Data). Implements the TOON format v3.0 specification with JSON-LD context expansion support.

Overview

TOON-LD is a text serialization format designed to minimize token count while preserving the semantic richness of JSON-LD. It achieves 40-60% token reduction compared to equivalent JSON-LD representations.

Features

• Tabular Arrays: Arrays of objects are serialized as CSV-like tables with a header
• Primitive Arrays: Simple value arrays use compact inline notation
• JSON-LD Context: Full support for URI compaction/expansion via @context
• JSON-LD 1.1 Keywords: Support for all standard JSON-LD keywords

Example

use toon_core::{jsonld_to_toon, toon_to_jsonld};

let json_ld = r#"{
    "@context": {"foaf": "http://xmlns.com/foaf/0.1/"},
    "http://xmlns.com/foaf/0.1/name": "Alice",
    "http://xmlns.com/foaf/0.1/age": 30
}"#;

// Convert JSON-LD to TOON-LD
let toon = jsonld_to_toon(json_ld).unwrap();
assert!(toon.contains("foaf:name: Alice"));

// Convert back to JSON-LD
let back = toon_to_jsonld(&toon).unwrap();

Modules

• [context]: JSON-LD context handling for URI compaction/expansion
• [error]: Error types for TOON-LD operations
• [keywords]: JSON-LD keyword constants and utilities
• [parser]: TOON-LD parser implementation
• [serializer]: TOON-LD serializer implementation