Use generics

[Jean85]

This is a first stab at fixing #121
Fixes #121

It tries to leverage the new generics support from PHPStan to obtain a cleaner way to detect Prophecy's mocks, and allow the ObjectProphecy<OriginalClass> PHPDoc notation.

This is still WIP: I've tried to follow @ondrejmirtes suggestiong from #121 (comment), but I don't know how to proceed to make PHPStan recognize the calls of the original class on the ObjectPropecy.

All green, ready for you to review @localheinz!

[Jean85]

@localheinz WDYT? You're welcome to take this and put it forward.

[localheinz]

@Jean85 @ondrejmirtes

As you have seen in my attempt to make use of genetics in #155, I have no idea how to sort this out.

I’ll happily take a look, though, when you have.

[Jean85]

@localheinz I've looked now at yours PR, and we have many parts in common. I didn't split the stub per-class, I'll try that because I have some autoload errors right now, it might help.

@ondrejmirtes I've (partially) followed your suggestions, and I've restored a big part of the previous codebase, except from ObjectProphecy (which is replaced with a generic) and RevealDynamicReturnTypeExtension (since its job of intersecting mocked types is now done upfront by the generic plus the WillExtendOrImplementDynamicReturnTypeExtension).

Almost all seems fixed, the only thing that I need to fix now is the return type inferred on ObjectProphecy calls; it sees the return type of the original method... MethodsClassReflectionExtension doesn't seem to work! Any tips?

[ondrejmirtes]

Dump what's going into the hasMethod and getMethod, I guess that hasMethod returns false.

[Jean85]

Thanks @ondrejmirtes, that led me in the right direction!

CI was crapping out on 7.4 + --prefer-lowest. Now it's all green!! 🎉

[localheinz]

@ondrejmirtes

Can you take a look and let me know if this makes sense, please?

[localheinz]

Thank you, @Jean85 and @ondrejmirtes!