count C++ declarations as cdecls

Author: tayloraswift

Sources/Symbols/Declarations/Phylum.DeclFlags.swift

@@ -29,6 +29,12 @@ extension Phylum.DeclFlags
     {
         .init(language: .swift, phylum: flags.phylum, kinks: flags.kinks, route: flags.route)
     }
+
+    @inlinable public
+    var cdecl:Bool
+    {
+        self.language == .c || self.language == .cpp
+    }
 }
 extension Phylum.DeclFlags:RawRepresentable
 {

Sources/UnidocRecords/Volumes/Trees/Unidoc.NounType.swift

@@ -17,7 +17,7 @@ extension Unidoc.NounType
     {
         switch self
         {
-        case .stem(_, let flags?):  flags.language == .c
+        case .stem(_, let flags?):  flags.cdecl
         case .stem(_, nil):         false
         case .text:                 false
         }

Sources/UnidocRecords/Volumes/Vertices/Unidoc.DeclVertex.swift

@@ -102,7 +102,7 @@ extension Unidoc.DeclVertex:Unidoc.PrincipalVertex
     @inlinable public
     var route:Unidoc.Route
     {
-        .init(shoot: self.shoot, cdecl: self.flags.language == .c)
+        .init(shoot: self.shoot, cdecl: self.flags.cdecl)
     }
 
     @inlinable public

Sources/UnidocRecords/Volumes/Vertices/Unidoc.ForeignVertex.swift

@@ -45,7 +45,7 @@ extension Unidoc.ForeignVertex:Unidoc.PrincipalVertex
     @inlinable public
     var route:Unidoc.Route
     {
-        .init(shoot: self.shoot, cdecl: self.flags.language == .c)
+        .init(shoot: self.shoot, cdecl: self.flags.cdecl)
     }
 
     @inlinable public