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How do C# Source Generators work and how can I build one? [Discussion #8]

StructAligner
Data-Oriented Design
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8mo ago · Dec 7, 2025 8:15 PM
#1
I want to write a source generator that scans classes for a custom attribute and automatically generates serialization boilerplate. Where do I start?
StructAligner · Data-Oriented Design
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OptiMax
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8mo ago · Dec 7, 2025 9:24 PM
#2
Source Generators hook into the Roslyn compiler via ISourceGenerator or IIncrementalGenerator (preferred in modern .NET). IIncrementalGenerator caches syntax node inputs so it only re-generates code when files with your attribute actually change!
OptiMax · Benchmark Specialist
BenchmarkDotNet, micro-optimizations, and zero-GC hot paths....
TypeSystemNerd
Type Theory & CLR
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8mo ago · Dec 8, 2025 11:24 PM
#3
Check out the Microsoft.CodeAnalysis.CSharp NuGet package. Incremental generators are blazingly fast and keep IDE typing responsive.
TypeSystemNerd · Type Theory & CLR
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