C# Source Generators in Action
summary
A live demo builds a .NET Standard 2.0 source generator in about 15 minutes that removes boilerplate by generating partial types from backing fields, exemplified by an INotifyPropertyChanged generator that compiles and fires correctly, and a log decorator via generated proxy that adds before/after logging. Implementation uses Roslyn semantic model APIs, sourcegen.dev for examples, tests by compiling sample code and running generators, and notes that generators run often (about three runs per symbol), cannot modify existing auto properties, and require diagnostics and cancellation handling to be safe and fast.
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chapters (14)
- 0:00Introduction
- 1:01Why and what are Source Generators?
- 4:12Demo: INotifyPropertyChanged Source Generator
- 22:53Source Generators vs. ...
- 23:20Source Generators vs. IL weaving
- 30:30Source Generators vs. IL generation
- 31:32Source Generators vs. Reflection
- 33:26How will generators change metaprogramming?
- 34:32Common problems and best practices
- 35:02Sharing source generators with Nuget
- 36:27How do source generators fit together?
- 1:00:50Best practices
- 1:01:18Summary
- 1:03:25Q&A
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