ibireme/yyjson
Yyjson
yyjson is a high-performance C library for parsing, serializing, and manipulating JSON data structures. It functions as a memory-efficient data tool that utilizes custom memory pools and contiguous block allocation to minimize fragmentation and overhead.
The project distinguishes itself as a SIMD JSON processor, using hardware-accelerated vector instructions for rapid string validation and parsing. It provides a toolkit for querying, modifying, and patching nested JSON objects and arrays through pointer-based access and path expressions.
The library covers a broad range of data manipulation capabilities, including schema-agnostic tree traversal, structural transformation, and deep value comparison. It supports JSON parsing and serialization with extended syntax options, as well as incremental parsing for large data streams and direct file system integration.
Features
- JSON Parsers - Uses SIMD hardware-accelerated vector instructions to achieve extremely high-performance JSON parsing and validation.
- High-Performance Parsers - Provides high-throughput JSON parsing optimized for maximum speed using SIMD and hardware acceleration.
- JSON Document Manipulation - Provides logic for updating, inserting, and removing property values and arrays within JSON documents.
- JSON Pointers - Retrieves specific values from JSON documents using string-based pointer paths.
- JSON Parsers - Implements a high-performance C library for parsing, mapping, and serializing JSON data structures.
- JSON Serializers - Transforms internal data structures into formatted JSON strings with options for pretty-printing and numeric notation.
- JSON Serializers - Converts internal memory objects into formatted JSON strings to facilitate reliable cross-system data exchange.
- Hardware-Accelerated JSON Processing - Utilizes SIMD hardware instructions to accelerate the scanning and validation of large JSON text streams.
- Pool Allocators - Uses specialized pool allocators to manage object lifecycles and reduce memory fragmentation during parsing.
- Memory-Efficient Parsing - Employs custom memory pools and contiguous blocks to minimize overhead and fragmentation during parsing.
- JSON Parsing - Converts JSON strings into structured formats with support for extended syntax like JSON5 and unquoted keys.
- JSON Memory Optimizations - Implements custom memory pools and contiguous block allocation to minimize fragmentation and memory overhead.
- Incremental JSON Parsing - Parses large JSON data streams in small chunks to reduce peak memory consumption.
- JSON Patching - Implements standard-compliant JSON patch and merge operations for incremental data structure updates.
- JSON Key Path Lookups - Navigates nested JSON structures by key paths to retrieve raw bytes and value types.
- JSON Hierarchy Traversal - Implements algorithms for recursively visiting nested JSON objects and arrays to process or extract fields.
- Non-Standard JSON Syntax Support - Supports non-standard JSON extensions such as comments and trailing commas to improve usability.
- Embedded Memory Management - Manages memory-efficient JSON structures using custom allocators tailored for resource-constrained embedded environments.
- Single-Pass Parsing - Implements a single-pass parsing strategy to convert JSON text into structured representations with minimal overhead.
- In-Place Tree Mutators - Provides mechanisms to modify parsed JSON tree nodes directly in memory without full re-serialization.
- Contiguous Memory Buffers - Implements data storage in flat, contiguous memory blocks to optimize cache locality and reduce indirection.
- In-Memory Pointer Links - Employs memory addresses to link tree nodes within contiguous blocks for rapid, cache-friendly traversal.
- Path-Based Tree Traversers - Navigates deep JSON tree structures using specific access paths without requiring predefined data models.
- JSON 处理 - High-performance JSON library in ANSI C.
- Data Serialization - High-performance JSON library implemented in C.
