A syntax tree has knowledge about the textual content of what it represents and that content relates to C#. There are scenarios that we need to change the code, such as code fixes, refactorings, or advanced source generation, and it could be done through changing the syntax tree; since this is a bidirectional relationship. There are two approaches, Replacement Methods and SyntaxRewriter classes
Sometimes when we want to generate code whether it is source generators or code fixes for a code analyzer, it is required to know how a syntax tree could be created using the Roslyn Compiler API. There are two ways, that we will discuss them in this post.
Compilers used to be a black box, they were accepting a bunch of source files as input and were producing an artifact as an output! There were no means of interaction with any of the phases inside the compiler pipeline. However, with Roslyn, The .NET Compiler Platform SDK, it is not the case anymore!