Add Swift support for Protocol and Struct in class diagram

[bobjacobsen]

This extends the class diagram support to include Protocol and Struct types with circle-P and circle-S letters respectively. This allows use of the diagrams for the Swift language.

This PR doesn't include updates for the web pages (see the "Declaring element" section, as couldn't find where that was maintained. All that's needed is to add "protocol" and "struct" examples to that section.

[The-Lum]

Hello all,

This PR doesn't include updates for the web pages (see the "Declaring element" section, as couldn't find where that was maintained. All that's needed is to add "protocol" and "struct" examples to that section.

FYI: I just add protocol and struct on the alpha-doc.

[The-Lum]

Hello @bobjacobsen, and all,

Why the executeDescriptionDiagram function (see line 134):

https://github.com/bobjacobsen/plantuml/blob/2b337ac940996904fa2f41d3135728b63986fcf0/src/net/sourceforge/plantuml/classdiagram/command/CommandHideShowByGender.java#L133-L134

does not have the same lines:

		} else if (arg1.equalsIgnoreCase("protocol")) {
			gender = EntityGenderUtils.byEntityType(LeafType.PROTOCOL);
		} else if (arg1.equalsIgnoreCase("struct")) {
			gender = EntityGenderUtils.byEntityType(LeafType.STRUCT);

[bobjacobsen]

My apologies. I didn't realize that code was there. Should I create another PR with that added?

[FOTSOWOMGNESYLVESTRECHRISTIAN]

@startuml
class Etudiant {
+id : int
+matricule : string
+nom_complet : string
+specialite_id : int
+filiere_id : int
+statut : string
}

class Specialite {
+id : int
+nom : string
}

class Filiere {
+id : int
+nom : string
+specialite_id : int
}

class Matiere {
+id : int
+nom : string
}

class Admin {
+id : int
+nom_utilisateur : string
+mot_de_passe : string
}

class Presence {
+id : int
+etudiant_id : int
+matiere_id : int
+date_presence : date
+statut : string
}

Etudiant --> Filiere
Filiere --> Specialite
Etudiant --> Presence
Matiere --> Presence
@enduml