DBUG API: mark overlapped routes, hide the builtin functionality (read description)

also reference the correct file:line on <autogenerated> (by searching for the file,line of method inside the embedded fields themselves, as go automatically generates the methods foreach struct for their embedded fields)

fix UseGlobal may override the overlap feature

mvc/controller.go

@@ -415,13 +415,19 @@ func (c *ControllerActivator) handleMany(method, path, funcName string, override
 }
 
 func (c *ControllerActivator) saveRoutes(funcName string, routes []*router.Route, override bool) {
+	m, ok := c.Type.MethodByName(funcName)
+	if !ok {
+		return
+	}
+
+	sourceFileName, sourceLineNumber := getSourceFileLine(c.Type, m)
+
 	relName := c.RelName()
 	for _, r := range routes {
 		r.Description = relName
 		r.MainHandlerName = fmt.Sprintf("%s.%s", relName, funcName)
-		if m, ok := c.Type.MethodByName(funcName); ok {
-			r.SourceFileName, r.SourceLineNumber = context.HandlerFileLineRel(m.Func)
-		}
+
+		r.SourceFileName, r.SourceLineNumber = sourceFileName, sourceLineNumber
 	}
 
 	// add this as a reserved method name in order to

mvc/reflect.go

@@ -2,6 +2,8 @@ package mvc
 
 import (
 	"reflect"
+
+	"github.com/kataras/iris/v12/context"
 )
 
 var baseControllerTyp = reflect.TypeOf((*BaseController)(nil)).Elem()
@@ -20,3 +22,37 @@ func indirectType(typ reflect.Type) reflect.Type {
 	}
 	return typ
 }
+
+func getSourceFileLine(ctrlType reflect.Type, m reflect.Method) (string, int) { // used for debug logs.
+	sourceFileName, sourceLineNumber := context.HandlerFileLineRel(m.Func)
+	if sourceFileName == "<autogenerated>" {
+		elem := indirectType(ctrlType)
+
+		for i, n := 0, elem.NumField(); i < n; i++ {
+			if f := elem.Field(i); f.Anonymous {
+				typ := indirectType(f.Type)
+				if typ.Kind() != reflect.Struct {
+					continue // field is not a struct.
+				}
+
+				// why we do that?
+				// because if the element is not Ptr
+				// then it's probably used as:
+				// type ctrl {
+				//   BaseCtrl
+				// }
+				// but BaseCtrl has not the method, *BaseCtrl does:
+				// (c *BaseCtrl) HandleHTTPError(...)
+				// so we are creating a new temporarly value ptr of that type
+				// and searching inside it for the method instead.
+				typ = reflect.New(typ).Type()
+
+				if embeddedMethod, ok := typ.MethodByName(m.Name); ok {
+					sourceFileName, sourceLineNumber = context.HandlerFileLineRel(embeddedMethod.Func)
+				}
+			}
+		}
+	}
+
+	return sourceFileName, sourceLineNumber
+}