Source generators are a powerful feature in C# that enable developers to dynamically generate C# code during compile time. Introduced with C# 9 and .NET 5, they have become a vital tool for reducing boilerplate, automating repetitive tasks, and improving performance by shifting code generation from runtime to compile-time.
What Are Source Generators?
A source generator is a type of Roslyn analyzer that inspects your code during compilation and produces additional C# source files. These files are automatically included in your project, allowing you to extend functionality without manually writing repetitive code. Unlike traditional code generation techniques that require multiple build steps, source generators run as part of the compilation, ensuring that the generated code is immediately available.
Why Use Source Generators? Source generators are most effective when:
- Reducing Boilerplate: For example, creating
Equals,GetHashCode, andToStringmethods based on class properties, or generating DTOs (Data Transfer Objects). - Compile-Time Code Analysis: Analyzing code for errors or applying best practices during compilation, such as validating required attributes.
- Performance Optimization: Replacing runtime reflection-based code with generated…
