Global use of nodiscard

rosidl_runtime_cpp/include/rosidl_runtime_cpp/action_type_support_decl.hpp

@@ -27,6 +27,7 @@ namespace rosidl_runtime_cpp
  * \return Function handler for the action's typesupport.
  */
 template<typename T>
+[[nodiscard]]
 const rosidl_action_type_support_t * get_action_type_support_handle();
 
 }  // namespace rosidl_runtime_cpp

rosidl_runtime_cpp/include/rosidl_runtime_cpp/bounded_vector.hpp

@@ -714,6 +714,7 @@ class BoundedVector
    * \param y A %BoundedVector of the same type as @a x
    * \return True if the size and elements of the vectors are equal
   */
+  [[nodiscard]]
   friend bool
   operator==(
     const BoundedVector & x,
@@ -734,6 +735,7 @@ class BoundedVector
    * \param y A %BoundedVector of the same type as @a x
    * @return True if @a x is lexicographically less than @a y
   */
+  [[nodiscard]]
   friend bool
   operator<(
     const BoundedVector & x,
@@ -743,6 +745,7 @@ class BoundedVector
   }
 
   /// Based on operator==
+  [[nodiscard]]
   friend bool
   operator!=(
     const BoundedVector & x,
@@ -752,6 +755,7 @@ class BoundedVector
   }
 
   /// Based on operator<
+  [[nodiscard]]
   friend bool
   operator>(
     const BoundedVector & x,
@@ -761,6 +765,7 @@ class BoundedVector
   }
 
   /// Based on operator<
+  [[nodiscard]]
   friend bool
   operator<=(
     const BoundedVector & x,
@@ -770,6 +775,7 @@ class BoundedVector
   }
 
   /// Based on operator<
+  [[nodiscard]]
   friend bool
   operator>=(
     const BoundedVector & x,

rosidl_runtime_cpp/include/rosidl_runtime_cpp/message_type_support_decl.hpp

@@ -27,6 +27,7 @@ namespace rosidl_runtime_cpp
  * \return Function handler for the message's typesupport.
  */
 template<typename T>
+[[nodiscard]]
 const rosidl_message_type_support_t * get_message_type_support_handle();
 
 }  // namespace rosidl_runtime_cpp

rosidl_runtime_cpp/include/rosidl_runtime_cpp/service_type_support_decl.hpp

@@ -27,6 +27,7 @@ namespace rosidl_runtime_cpp
  * \return Function handler for the service's typesupport.
  */
 template<typename T>
+[[nodiscard]]
 const rosidl_service_type_support_t * get_service_type_support_handle();
 
 }  // namespace rosidl_runtime_cpp

rosidl_runtime_cpp/include/rosidl_typesupport_cpp/action_type_support.hpp

@@ -22,6 +22,7 @@ namespace rosidl_typesupport_cpp
 {
 
 template<typename T>
+[[nodiscard]]
 const rosidl_action_type_support_t * get_action_type_support_handle();
 
 }  // namespace rosidl_typesupport_cpp

rosidl_runtime_cpp/include/rosidl_typesupport_cpp/message_type_support.hpp

@@ -22,6 +22,7 @@ namespace rosidl_typesupport_cpp
 {
 
 template<typename T>
+[[nodiscard]]
 const rosidl_message_type_support_t * get_message_type_support_handle();
 
 }  // namespace rosidl_typesupport_cpp

rosidl_runtime_cpp/include/rosidl_typesupport_cpp/service_type_support.hpp

@@ -25,6 +25,7 @@ namespace rosidl_typesupport_cpp
 {
 
 template<typename T>
+[[nodiscard]]
 const rosidl_service_type_support_t * get_service_type_support_handle();
 
 template<typename T>

rosidl_typesupport_introspection_cpp/include/rosidl_typesupport_introspection_cpp/message_type_support_decl.hpp

@@ -28,6 +28,7 @@ namespace rosidl_typesupport_introspection_cpp
 /// the rosidl_generate_interfaces() macro.
 /// This is implemented in the shared library provided by this package.
 template<typename T>
+[[nodiscard]]
 ROSIDL_TYPESUPPORT_INTROSPECTION_CPP_PUBLIC
 const rosidl_message_type_support_t * get_message_type_support_handle();
 

rosidl_typesupport_introspection_cpp/include/rosidl_typesupport_introspection_cpp/service_type_support_decl.hpp

@@ -27,6 +27,7 @@ namespace rosidl_typesupport_introspection_cpp
 /// services.
 /// This is implemented in the shared library provided by this package.
 template<typename T>
+[[nodiscard]]
 ROSIDL_TYPESUPPORT_INTROSPECTION_CPP_PUBLIC
 const rosidl_service_type_support_t * get_service_type_support_handle();