This is an experimental library designed to make it easy to construct Roslyn syntax trees for when you're working with source generators. It does this by using a source generator that takes syntax trees as parsed by the compiler and "quotes" them to expose the syntax tree itself in your code.
This project was inspired by the excellent RoslynQuoter by Kirill Osenkov, the online version has been invaluable in understanding the C# syntax structure.
See examples/Synto.Examples/Program.cs for some simple examples of what currently works.
Templates also support a live (staged) binding-time split: data marked live (via Template.Parameter<T>(), Template.Live<T>(), or [Live]) has its dataflow trace emitted verbatim as executing C# into the generated factory — so a foreach/for/while/if over live data is unrolled or branch-specialized at template-invocation time, while everything else is quoted as usual. A generic, user-extensible syntax-builder surface ([SyntaxBuilder], with built-in Member/TypeOf) lifts live values into output syntax. The ObjectReader example dog-foods this end to end. See docs/superpowers/specs/2026-06-27-live-staged-templates-design.md for the design.