OpenAssetIO Code Generation Tool

The openassetio-traitgen tool can be used to generate Trait and Specification classes from a simple YAML description. This avoids the laborious and error-prone task of creating these by hand.

This package is entirely self-contained and can be used without an OpenAssetIO installation. It provides code generation CLI, along with a corresponding python package that can be used for custom generation.

Supported languages

• Python 3.10+
• C++ 17+

Installation

The package is available on PyPI, so to get the latest stable release

python -m pip install openassetio-traitgen

For the bleeding edge, the package can also be installed after cloning this repository using

python -m pip install .

Usage

openassetio-traitgen -h

Development notes

This package follows the main OpenAssetIO contribution process.

However, as an (almost) pure Python project, it adheres to strict PEP-8 naming conventions.

We recommend using a suitably configured Python virtual environment for all development work.

To run the project tests, first install the test pre-requisites. Note that though the tool itself has no runtime dependencies on openassetio, the tests require it to verify the functionality of the auto generated code.

python -m pip install -r tests/requirements.txt

Once this is done, you can then create an editable installation of the package, and run the tests:

python -m pip install -e .
python -m pytest

C++ tests

C++ tests run via pytest invoking CMake's ctest utility. The dependencies for building/linting/running these tests can be installed into a Python environment.

python -m pip install -r tests/ctest-requirements.txt

It is possible to execute only the C++ tests.

python -m pytest -m ctest

Note that ctest will be skipped unless the OPENASSETIO_TRAITGENTEST_CMAKE_PRESET environment variable is set. Valid values are "test" and "lint", where "lint" will perform both static and dynamic analysis on the generated sources (as well as the tests themselves).

Also ensure that OpenAssetIO is discoverable via CMake's find_package. For example, you may need to set the CMAKE_PREFIX_PATH environment variable to an OpenAssetIO installation.