Add the ability to generate definitions from declarations and vice versa

[benjaminjack]

I spend a lot of time typing out lists of arguments (or copying and pasting them) when I'm defining functions that have already been declared in a header file. It would be nice if cpptools could automatically generate a skeleton definition of a function that has already been declared, or at least provide a shortcut to auto-fill the argument list.

[BrianSipple]

I was going to suggest something very similar. I'd also be interested in a feature to create a header- and source-file pair with a single task invocation. This would be similar to XCode, for example, which generates both a .h and .cpp file when the user selects an option to create a new class file.

[sean-mcmanus]

@bobbrow I believe this is the most used feature in VS that we are missing (used more often than Find All References).

As mentioned in #3056, we should also support the "opposite" case of adding the declaration to the header from an existing definition.

[bobbrow]

Yeah, I have seen this feedback a few times in our survey responses. It is on my radar.

[daranday]

Would love to have this feature!

[davidbitton]

Upvote!

[exocode]

Is this something you are looking for?:

It is able to preserve existing methods and inclusions

https://github.com/reignofwebber/vscode-c-cpp-definition-generator

[davidbitton]

@exocode yep! your work?