Experimental Livebook-friendly DSL for sketching UML class diagrams.

This Lab DSL compiles to the stable, pipe-first Choreo.UML builders and returns an ordinary %Choreo.UML{}. Classes, structs, behaviors, protocols, and interfaces can be declared with block-based fields and functions. Edges expose UML relationship types as readable domain vocabulary.

Examples

iex> import Choreo.Lab.DSL.UML
...> diagram = uml do
...>   user = struct("User") do
...>     field :id, :integer
...>     private field(:email, :string)
...>     function :authenticate, 2, return: :boolean
...>   end
...>
...>   auth = behavior("AuthProvider") do
...>     function :verify, 1, return: :ok_error
...>   end
...>
...>   realizes user ~> auth, "implements"
...> end
iex> diagram.graph.nodes[:user].type
:struct
iex> diagram.graph.nodes[:user].fields |> Enum.map(& &1[:name])
["id", "email"]
iex> [meta] = Map.values(diagram.edge_meta)
iex> {meta.type, meta.label}
{:realizes, "implements"}

Relationship edges can use typed constructors, generic edge, or pipe modifiers:

inherits child ~> parent, "extends"
realizes adapter ~> protocol, "implements"
associates user ~> profile, "has one"
depends controller ~> repo, "calls"
edge controller ~> repo, depends: "calls"
controller ~> repo |> depends("calls")

The generic ~> form defaults to :depends, which matches a lightweight dependency sketch.