colgen

colgen parses directives embedded in collection.go, such as //colgen:News,Tag, to automatically generate Go collection helpers and type-safe list methods, reducing manual boilerplate for domain models.

Go collection helpers are generated types like XxxList []Xxx with methods for Index, UniqueIDs, Group, and Fill. You need them to reduce boilerplate and keep domain models consistent across architectural layers.

Yes, the Go collection code generator uses AST parsing to enforce directive correctness in your collection.go file. This ensures the generated type-safe lists and inline snippets match your struct definitions accurately.

Yes, you need your Go project to compile before generating collection types. The AST parsing mechanism requires a valid, compilable project state to accurately read struct definitions and enforce directive correctness.

You create converters between layers in Go by using the Map and MapP patterns provided by the generated collection helpers. These patterns enable flexible field-based mapping to accelerate API-layer scaffolding.

A key limitation is that your project must compile before generation, as AST parsing enforces directive correctness. Additionally, LLM-assisted templates and inline snippets are scoped to struct-to-layer conversions and specific collection.go directives.