Feature/cpp

[chybz]

🤔 What's changed?

• Added C++ message generation support
• Added CMake library

⚡️ What's your motivation?

While adding C++ support in Gherkin, saw that other implementations were using this repository, so decided to contribute in here as well.

🏷️ What kind of change is this?

• ⚡ New feature (non-breaking change which adds new behaviour)

📋 Checklist:

• I agree to respect and uphold the Cucumber Community Code of Conduct
• My change requires a change to the documentation.
  • I have updated the documentation accordingly.
• Users should know about my change
  • I have added an entry to the "Unreleased" section of the CHANGELOG, linking to this pull request.

---

This text was originally generated from a template, then edited by hand. You can modify the template here.

[mpkorstanje]

Cheers.

No external dependencies, so no JSON support as of now, hence no tests.

I think we can do without tests for serialization, but I would expect at the very least a test-cpp.yml in the github workflows to ensure the project compiles.

Arbitrary dependency on C++20

I'm not familiar with CPP. Where does the dependency on C++20 come in to play?

[jenisys]

Arbitrary dependency on C++20

You should not require the C++20 standard in the CMake file,
if your source code does not require some of the features from the C++20 standard.

POSSIBLE APPROACHES:

• Define CMAKE_CXX_STANDARD as default if no C++ standard is defined.
  You should support that the user overrides it via cmake -DCMAKE_CXX_STANDARD=17 ... on the command line.
  In addition, this approach allows that a parent CMakeLists.txt file (that wants to use this library as part of the overall build process) predefines the CMAKE_CXX_STANDARD.
• BETTER APPROACH: Your library(s)/program(s) should specify which C++ features are required.
  This determines which C++ standard is used (or it fails if the C++ compiler does not support these standard(s)/features)
• The C++ compiler version (as part of the toolchain) defines the default C++ standard that is used by default

# -- FILE: CMakeLists.txt
# EXAMPLE FOR SOLUTION 1
if(NOT DEFINED CMAKE_CXX_STANDARD)
    set(CMAKE_CXX_STANDARD 20)  # Use C++20 standard as default
endif()

[chybz]

Yes, definitely. That was just me being lazy. Thank you very much !

[chybz]

@mpkorstanje, @jenisys: repository should be in a decent state now, could you please comment on what I should do next ? (A bit more work is necessary for CI/CD). Thank you