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Main problem that I see now when comparing to SG is the part when code is generated - in those tools you have to build code with Roslyn objects. I have used first one and I was rather pleased but it has some drawbacks.

Roslyn based tools before source generators - there are two in my knowledge: CodeGeneration.Roslyn and Uno.SourceGeneration.

Because of this magic many people donвЂ™t want to introduce this techniques to their projects - they are simply not pure code that anybody can navigate to. Generated code is some kind of black box - something is injected into the code but IDE and compiler is not aware of this code so when you will try to debug very weird things can happened. This technique allowed us to do Aspect Oriented Programming (AOP) for many years but it has main drawback. Both use technique named code weaving to inject IL code in build process. One commercial named Postsharp and open source project Fody.

Injecting IL - there are two main tools for this technique.

Source generators are little bit different than just template engine.

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The other thing is to mark that T4 is only template engine so it could be theoretically used in source generator but I havenвЂ™t saw samples to do so. This technology was commonly used and is definitely not dead but Microsoft is slowly giving up on this technique in new products. T4 allows to generate code by having template written in T4 notation, this template is used by engine with some input data (file or database etc.) to generate code.This API is now deprecated by Roslyn and SourceGenerators Additionally it tries to abstract all languages (c# / Vb.NET) and because of that you cant use language specific features of given language. It has smaller set of functionality than Roslyn gives and it is out of process because csc.exe is used behind the scene. CodeDom which was available since 1.0.NET from the beginning, but it always had some drawbacks.

This is the first approach to blogging and I took some effort to make it good but as any product it could have some early stage of product errors.ДЄlso I want to note that in the post I will be referring to Source Generators as SG to simplify.

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- Add nuget package and update IDE support.- Added information about intellisense fix.I will show you complete real world example with testing, logging and debugging which I took from several sources and figure out by experiments.

In this post I will show you how you can generate code using new.

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