How to handle invalid JSON with JeayeSON?

JeayeSON is a non-validating parser, so it assumes input is valid JSON. You must pre-validate data using external tools or libraries, as errors will cause runtime issues without built-in error handling.

JeayeSON vs nlohmann/json for C++ projects?

JeayeSON offers a header-only, type-safe approach with a stdlib-like API but requires Boost and C++14. nlohmann/json is more popular, supports C++11, has no dependencies, and includes validation, but has a different API style. Choose based on your project's standards and dependency preferences.

How to customize integer types in JeayeSON?

Modify the jeayeson/config.hpp file after running ./configure. Change the json_int type in the config struct specialization, for example, from int64_t to int32_t, to suit your needs.

Does JeayeSON support JSON Schema validation?

No, JeayeSON does not include JSON Schema validation. It focuses on parsing and manipulation; for validation, you need to integrate a separate library or implement custom checks.

What are the performance trade-offs of JeayeSON?

JeayeSON emphasizes simplicity and type safety, but as a header-only library with Boost, it may have overhead compared to performance-optimized libraries like RapidJSON. Benchmark for your use case if speed is critical.

How to integrate JeayeSON into a CMake project?

Add JeayeSON as a submodule or copy headers, then include jeayeson/include in CMakeLists.txt with include_directories. Ensure Boost is linked via find_package, and run ./configure if needed to generate config.hpp.

Open-Awesome

JeayeSON

BSD-3-ClauseC++

A header-only, type-safe C++14 JSON library with a consistent stdlib-like API.

GitHub

135 stars24 forks0 contributors

What is JeayeSON?

JeayeSON is a header-only JSON library for C++14 that provides a type-safe, intuitive interface for reading, writing, and manipulating JSON data. It solves the problem of cumbersome JSON handling in C++ by offering a template-based approach with a consistent API similar to the C++ standard library.

Target Audience

C++ developers working with JSON data in modern C++14 (or later) projects, particularly those who prefer header-only libraries and a stdlib-like interface.

Value Proposition

Developers choose JeayeSON for its simplicity, type safety, and ease of integration—it requires no macros, offers extensive customization, and avoids the complexity of many other C++ JSON libraries.

Overview

A very sane (header only) C++14 JSON library

Use Cases

Best For

Embedding JSON parsing in C++ projects without external dependencies
Modern C++14 (or later) applications needing type-safe JSON handling
Projects requiring a header-only library for easy integration
Developers preferring a stdlib-like API for JSON manipulation
Applications needing UTF-8 and UTF-16 text encoding support
Scenarios where non-validating JSON parsing is acceptable

Not Ideal For

Projects requiring robust JSON validation or error handling for malformed input
Environments where Boost is not available or adding dependencies is undesirable
Legacy codebases stuck with C++ standards older than C++14
Teams prioritizing widely adopted libraries with larger ecosystems and community support

Pros & Cons

Pros

Header-Only Integration

Eliminates build steps by allowing direct inclusion of headers, making it easy to embed in any project without complex setup, as highlighted in the README's installation notes.

Modern Type Safety

Leverages C++14 features for type-safe operations, with methods like is<T>() and as<T>() for explicit type checking and casting, ensuring robust JSON manipulation.

Consistent Stdlib API

Provides a familiar interface with functions such as push_back, size, and iterators, mirroring standard library containers to reduce the learning curve for C++ developers.

Extensive Customization

Allows easy type adjustments via config.hpp, enabling changes like using std::unordered_map or 32-bit integers, as described in the Customization section.

Cons

Non-Validating Parser

Expects valid JSON input without built-in validation, meaning malformed data can lead to runtime errors or crashes, as admitted in the README's philosophy.

Boost Dependency

Requires Boost libraries (1.55.0+), adding an external dependency that may complicate projects aiming for minimalism or those without Boost installed.

Configuration Overhead

Needs running a ./configure script to generate config.hpp before use, introducing an extra step that can disrupt seamless integration in automated builds.

Limited to Modern C++

Only supports C++14 and later, excluding projects using older standards like C++11, which limits its adoption in legacy environments.

Frequently Asked Questions

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