Custom generator

[ralfeus]

Hi all,
I want to create a generator of the server stub for Dart Frog framework. So, I'm trying to figure out how the codegen works. I've realized the CodegenConfig descendant only defines minor parameters of the generated code such as package names, location of output files, template names etc. But it doesn't define overall logic of generated package. For example Dart Frog routing is based of file structure - each path has it's own controller named and located exactly as in URL.

I've found out that such details - going through paths - are implemented in DefaultGenerator class. So, my understanding is that I have to implement my own implementation of Generator interface, most likely - descendant of DefaultGenerator. Is it right approach?

Now, I've got to a question how I inject my generator to the codegen command line. And here I've found out the codegen CLI (at least the Generate command) doesn't care about another generators as it just instantiates DefaultGenerator:

new DefaultGenerator().opts(clientOptInput).generate();

So what would be the right approach here? Just run my own implementation of Generator? Or create another command in CLI command scheme that would do that?

Wouldn't it make sense for the Generate command to load not only CodegenConfig class for a given language but also try to load the custom Generator implementation?

[slifty]

I'm not sure this will be of much help but here is a repository that defines a new generator and has some tooling for invoking that generator: https://github.com/PhilanthropyDataCommons/sdk/