Generic Definitions on Static Methods

[MorningSage]

Thank you for creating this library. I have found it immensely helpful!

One thing I haven't wrapped my head around is how to declare a generic type in a static method. For instance, I would like to generate this code:

// Goal is to define <X> as follows
public static <X> Builder<X> builder() {
    return new Builder<>(); 
} 

I can successfully create the method, but <X> is undefined because this is a static function.

// Actual code generated where <X> is not defined
public static Builder<X> builder() {
    return new Builder<>(); 
} 

Is there a way to define <X> as is the first example? Can I pass a GenericSourceGenerator somewhere or set a flag I'm missing? The code I'm using is fairly dynamic, but a simplified version is:

FunctionSourceGenerator.create("builder")
    .addModifier(Modifier.PUBLIC | Modifier.STATIC)
    .setReturnType(
        TypeDeclarationSourceGenerator.create("Builder").addGeneric(GenericSourceGenerator.create("X"))
    )
    .addBodyCodeLine("return new Builder<>();")

Thanks!

[Roberto Gentili]

Hello, Thank you for your feedback! :-)
To solve your problem you need to call FunctionSourceGenerator's setTypeDeclaration method as follow:

FunctionSourceGenerator.create("builder")
.addModifier(Modifier.PUBLIC | Modifier.STATIC)
.setTypeDeclaration(
	TypeDeclarationSourceGenerator.create(
		GenericSourceGenerator.create("X")
	)
)
.setReturnType(
	TypeDeclarationSourceGenerator.create("Builder").addGeneric(GenericSourceGenerator.create("X"))
)

For further examples you can also visit the UnitSourceGeneratorTest class that contains a series of tests that together represent a complete example of what you can do with source generators.