edn.c: A High-Performance C11 Library for Parsing EDN (Extensible Data Notation) with SIMD Acceleration
By
delaguardo
Front-window bakery material. Catches the eye, delivers the goods.
Summary
This article introduces edn.c, a high-performance EDN (Extensible Data Notation) reader library written in C11 with SIMD acceleration. EDN is described as a richer, more extensible alternative to JSON with additional built-in types like sets, keywords, symbols, and tagged literals. The library emphasizes zero-copy parsing for maximum performance, making it suitable for data-intensive applications. The article explains EDN's features, compares it to JSON, and details the technical implementation approach including SIMD optimizations for parsing speed.
Key quotes
· 5 pulledEDN (Extensible Data Notation) is a data format similar to JSON, but richer and more extensible. Think of it as 'JSON with superpowers'
JSON-like foundation: Maps {:key value}, vectors [1 2 3], strings, numbers, booleans, null (nil)
Additional built-in types: Sets #{:a :b}, keywords :keyword, symbols my-symbol, characters \newline, lists (1 2 3)
Extensible via tagged literals: #inst '2024-01-01', #uuid '...'—transform data at parse time with custom readers
A fast, zero-copy EDN (Extensible Data Notation) reader written in C11 with SIMD acceleration
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