clang2il.go: Populate private signals

cmd/genbindings/clang2il.go

@@ -461,6 +461,15 @@ nextMethod:
 				return CppClass{}, err
 			}
 
+			// Check for private signal
+			if i, ok := isPrivateSignal(&mm); ok {
+				// Remove only the QPrivateSignal parameter, keep other parameters
+				mm.Parameters = append(mm.Parameters[:i], mm.Parameters[i+1:]...)
+				mm.IsSignal = true
+				ret.PrivateSignals = append(ret.PrivateSignals, mm)
+				continue nextMethod
+			}
+
 			mm.IsSignal = isSignal && !mm.IsStatic && AllowSignal(mm)
 			mm.IsProtected = (visibility == VsProtected)
 
@@ -515,6 +524,17 @@ func isExplicitlyDeleted(node map[string]interface{}) bool {
 	return false
 }
 
+// isPrivateSignal checks if a method is a private signal by looking for a
+// QPrivateSignal parameter
+func isPrivateSignal(method *CppMethod) (int, bool) {
+	for i, param := range method.Parameters {
+		if strings.HasSuffix(param.ParameterType, "::QPrivateSignal") {
+			return i, true
+		}
+	}
+	return -1, false
+}
+
 // processEnum parses a Clang enum into our CppEnum intermediate format.
 func processEnum(node map[string]interface{}, addNamePrefix string) (CppEnum, error) {
 	var ret CppEnum