Parsing Expression Grammar Template Library
You are looking for Boost.Spirit (https://www.boost.org/doc/libs/1_76_0/libs/spirit/doc/x3/html/index.html) or PEGTL (https://github.com/taocpp/PEGTL)
Good source layout with Flex and Bison
Use flex and bison, and take advantage of their features (since the defaults aren't sane four hysterical raisins). I have a demo project that I like to point people to.
Less time debugging, more time building. Scout APM allows you to find and fix performance issues with no hassle. Now with error monitoring and external services monitoring, Scout is a developer's best friend when it comes to application development.
C++ parsing DSL
You can check Lexy library of Foonanthan. https://github.com/foonathan/lexy : it is pretty nice, and light and support if i don't miss, C++20
Why no more Lex/Yakk/ANTLR/whatever?
5 projects | reddit.com/r/cpp | 20 Jun 2021
TIL: Visual Studio has quantum state values 🤨
1 project | reddit.com/r/cpp | 17 Mar 2022
We Built a C++ Rendering Engine for the Web
2 projects | news.ycombinator.com | 10 Jul 2021
Rust's Most Unrecognized Contributor
1 project | reddit.com/r/rust | 2 May 2021
Wondered if anyone is interested in a c++ parser combinators library?
1 project | reddit.com/r/cpp | 13 Apr 2021