Inside Ruby’s JSON Library: Complete Deep Dive

May 18, 2026

Introduction

This tutorial explores the internals of the JSON library used by entity [“software”,”Ruby”,”CRuby interpreter”].

The archive contains:

• Native C parser implementation
• Native C generator implementation
• SIMD optimizations
• Floating-point conversion algorithms
• Buffer management infrastructure
• Ruby wrapper APIs
• JSON additions for Ruby core classes
• Build system integration

Repository structure:

json/
├── parser/
│ └── parser.c
├── generator/
│ └── generator.c
├── simd/
│ └── simd.h
├── vendor/
│ ├── fpconv.c
│ ├── ryu.h
│ └── jeaiii-ltoa.h
├── fbuffer/
│ └── fbuffer.h
└── lib/json/

This tutorial covers the architecture, major APIs, internal methods, parsing pipeline, generator internals, memory management, and performance optimizations.

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May 18, 2026 Introduction This tutorial explores the internals of the JSON library used by entity [“software”,”Ruby”,”CRuby interpreter”]. The archive contains: …

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