feat: implement interface inheritance support in code generator

[zandercodes]

This code adds the interface inheritance functions to be created.

[Copilot]

Pull Request Overview

This PR adds support for interface inheritance in code generation, enabling the system to generate wrapper methods for functions inherited from base interfaces.

Key changes:

• Added an Inheritance configuration flag to enable/disable interface inheritance handling
• Modified template logic to exclude inherited methods from VTables and generate QueryInterface-based wrappers instead
• Implemented recursive interface method collection to gather all inherited functions

Reviewed Changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
internal/codegen/templates/interface.tmpl	Filters out inherited methods from VTable structure generation
internal/codegen/templates/funcimpl.tmpl	Adds QueryInterface-based delegation for inherited methods
internal/codegen/config.go	Adds Inheritance configuration field
internal/codegen/codegen.go	Implements inheritance logic and getInheritedInterfaceMethods function
internal/cli/cli.go	Adds CLI flag for inheritance feature

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[zandercodes]

I forgot to update the README.md. I'll do that later.

[Copilot]

Pull Request Overview

Copilot reviewed 6 out of 6 changed files in this pull request and generated 2 comments.

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[Copilot]

Pull Request Overview

Copilot reviewed 6 out of 6 changed files in this pull request and generated 3 comments.

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[jagobagascon]

@zandercodes could you include the WinRT class/interface you want to generate in this PR?

The value of this project lays in the generated code, and updating the generator without adding any code does not make much sense.

And it would also be helpful for the review to have some code generated.

[zandercodes]

@jagobagascon
I should be done now.
I tested this with my application and everything is working so far.
As far as the code is concerned, only the inheritance of the class and its functions were added during generation.
Then I made some adjustments to codegen.go, which made the code a little clearer.
I would say you can now perform a review. I am satisfied so far.

[zandercodes]

I still need to fix the “sanity check” issue.

[jagobagascon]

It seems that you are recursively calling to the GetImplementedInterfaces() which is causing problems with duplicated methods in your code.

For example the CharacteristicProperties property belongs to the iGattCharacteristic interface (see)

But since iGattCharacteristic2 also extends iGattCharacteristic you are getting that method twice.

This is the data returned by processImplementedInterfaces():

-> Generating class: GattCharacteristic
  -> Implementing interface: IGattCharacteristic
   -> Method: GetDescriptors
   -> Method: get_CharacteristicProperties
   -> Method: ...
   ...
  -> Implementing interface: IGattCharacteristic2
   -> Method: get_Service
   -> Method: ...
   -> Method: GetDescriptors inherited from: iGattCharacteristic
   -> Method: get_CharacteristicProperties inherited from: iGattCharacteristic
   ...

The methods inherited by IGattCharacteristic2 should be ignored. They are already available via GattCharacteristic.

This is the code I would expect to be generated:

func (* GattCharacteristic) GetCharacteristicProperties() {
	itf := impl.MustQueryInterface(ole.NewGUID(GUIDiGattCharacteristic))
	...
}
func (* iGattCharacteristic2) GetCharacteristicProperties() {
	itf := impl.MustQueryInterface(ole.NewGUID(GUIDiGattCharacteristic))
	...
}
func (* iGattCharacteristic) GetCharacteristicProperties() { 
	syscall(...)
}

[zandercodes]

@jagobagascon Status?