Source code for Dotnet code generation overview by example

BenchmarkDotNet v0.15.4, macOS 26.0.1 (25A362) [Darwin 25.0.0]
Apple M4, 1 CPU, 10 logical and 10 physical cores
.NET SDK 9.0.305
  [Host]     : .NET 9.0.9 (9.0.9, 9.0.925.41916), Arm64 RyuJIT armv8.0-a
  DefaultJob : .NET 9.0.9 (9.0.9, 9.0.925.41916), Arm64 RyuJIT armv8.0-a

Generation of parser

Method	Mean	Error	StdDev	Gen0	Gen1	Gen2	Allocated
EmitIl	3.370 us	0.0283 us	0.0251 us	0.4196	0.2060	0.0305	3.48 KB
ExpressionTree	131.847 us	0.4957 us	0.4394 us	1.2207	0.4883	-	11.4 KB
Sigil	130.371 us	1.2540 us	1.1730 us	52.7344	13.6719	-	433.2 KB
Roslyn	14,522.046 us	263.8589 us	246.8138 us	1031.2500	343.7500	125.0000	7757.56 KB

Invocation of parser

Method	Mean	Error	StdDev	Ratio	RatioSD	Gen0	Allocated	Alloc Ratio
EmitIl	75.14 ns	0.352 ns	0.294 ns	1.01	0.00	0.0048	40 B	1.00
ExpressionTree	76.12 ns	1.306 ns	1.222 ns	1.02	0.02	0.0048	40 B	1.00
Reflection	1,084.40 ns	21.704 ns	25.837 ns	14.52	0.34	0.0992	832 B	20.80
Sigil	75.51 ns	0.319 ns	0.249 ns	1.01	0.00	0.0048	40 B	1.00
Roslyn	82.45 ns	0.117 ns	0.110 ns	1.10	0.00	0.0048	40 B	1.00
SourceGenerator	75.59 ns	0.092 ns	0.086 ns	1.01	0.00	0.0048	40 B	1.00
ManuallyWritten	74.66 ns	0.142 ns	0.133 ns	1.00	0.00	0.0048	40 B	1.00