Reuse container class test function with API

src/base/api.lua

@@ -466,11 +466,8 @@
 			-- compatibile with this scope, then I can use it.
 			local currentClass = api.scope.current.class
 			local targetClass = p.container.getClass(scope)
-			while targetClass do
-				if targetClass.name == currentClass.name then
-					return api.scope.current
-				end
-				targetClass = targetClass.parent
+			if p.container.classIsA(targetClass, currentClass.name) then
+				return api.scope.current
 			end
 		end
 

src/base/container.lua

@@ -235,20 +235,27 @@
 
 
 ---
--- Return true if the container is or inherits from specified class.
+-- Return true if a container class is or inherits from the
+-- specified class.
 --
--- @param className
---    The name of the class to check against.
+-- @param class
+--    The container class to be tested.
+-- @param scope
+--    The name of the class to be checked against. If the container
+--    class matches this scope (i.e. class is a project and the
+--    scope is "project"), or if it is a parent object of it (i.e.
+--    class is a solution and scope is "project"), then returns
+--    true.
 ---
 
-	function container.hasClass(self, className)
-		local class = self.class
-		while class.parent do
-			if class.name == className then
+	function container.classIsA(class, scope)
+		while class do
+			if class.name == scope then
 				return true
 			end
 			class = class.parent
 		end
+		return false
 	end
 
 

src/base/validation.lua

@@ -115,7 +115,7 @@
 			-- I can skip over it (config scope applies to everything).
 			local scope
 			for i = 1, #f.scopes do
-				if f.scopes[i] == "config" or p.container.hasClass(container, f.scopes[i]) then
+				if f.scopes[i] == "config" or p.container.classIsA(container.class, f.scopes[i]) then
 					scope = f.scopes[i]
 					break
 				end