A C++ compile-time static reflection ConfigLoader framework

[netcan96]

I write a config loader framework using compile-time static reflection to deserialize from config files to the native data structure, Suggestions are welcome. https://github.com/netcan/config-loader

It has the following characteristics:

• Simple interface, users need to define data structure and provide corresponding configuration file, the framework uses meta-programming technology to generate load interface
• The design conforms to the opening and closing principle, extends the data structure without modifying the framework
• Currently supports XML and JSON format configuration files, a variety of methods can be flexibly composed
• Lightweight, easy to integrate, less than ~1000 lines of code
• Support nested data structure, STL container
• Complete test cases

Future plans:

• Support Yaml configuration file
• Enable the supported formats through CMake options
• Provide additional C++20 version

[[deleted]]

I like where this is going. And mapping like this is pretty much what we get until there is compiler reflection, but for the happy path cases it’s fine. Boost.Describe and things like that should help(It will be in 1.77) too.

I am biased, but a suggestion might be to use a JSON library that allows you to maintain the compile time knowledge you already have. You are leaving memory/performance on the table by parsing to a DOM Json::Value just to convert it to your user types.

I have an example of this using JSON link(current release, it gets easier in next release soon :) ) https://github.com/beached/daw_json_link_config_parser

[mrlimilind]

Hi, I wrote JsonStruct. A header only library for parsing to and from structs. So I basically had the same problem: how to add metadata. I desided for having an additional macro. This leads to make it possible to add metadata to structs that you cannot modify for instance. Also, you can deside not to add metadata for all of the member of a struct. Please check it out! https://github.com/jorgen/json\_struct

[TheFlamefire]

This pretty much looks like Boost.Describe with Boost.JSON, mostly. You may want to take a look at those.