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_runtime_cpp/type_description/field__struct.hpp

@@ -133,6 +133,7 @@ struct Field_
     ConstPtr;
 
   // comparison operators
+  [[nodiscard]]
   bool operator==(const Field_ & other) const
   {
     if (this->name != other.name) {
@@ -146,6 +147,7 @@ struct Field_
     }
     return true;
   }
+  [[nodiscard]]
   bool operator!=(const Field_ & other) const
   {
     return !this->operator==(other);

rosidl_runtime_cpp/include/rosidl_runtime_cpp/type_description/field_type__struct.hpp

@@ -335,6 +335,7 @@ struct FieldType_
     ConstPtr;
 
   // comparison operators
+  [[nodiscard]]
   bool operator==(const FieldType_ & other) const
   {
     if (this->type_id != other.type_id) {
@@ -351,6 +352,7 @@ struct FieldType_
     }
     return true;
   }
+  [[nodiscard]]
   bool operator!=(const FieldType_ & other) const
   {
     return !this->operator==(other);

rosidl_runtime_cpp/include/rosidl_runtime_cpp/type_description/individual_type_description__struct.hpp

@@ -119,6 +119,7 @@ struct IndividualTypeDescription_
     ConstPtr;
 
   // comparison operators
+  [[nodiscard]]
   bool operator==(const IndividualTypeDescription_ & other) const
   {
     if (this->type_name != other.type_name) {
@@ -129,6 +130,7 @@ struct IndividualTypeDescription_
     }
     return true;
   }
+  [[nodiscard]]
   bool operator!=(const IndividualTypeDescription_ & other) const
   {
     return !this->operator==(other);

rosidl_runtime_cpp/include/rosidl_runtime_cpp/type_description/key_value__struct.hpp

@@ -118,6 +118,7 @@ struct KeyValue_
     ConstPtr;
 
   // comparison operators
+  [[nodiscard]]
   bool operator==(const KeyValue_ & other) const
   {
     if (this->key != other.key) {
@@ -128,6 +129,7 @@ struct KeyValue_
     }
     return true;
   }
+  [[nodiscard]]
   bool operator!=(const KeyValue_ & other) const
   {
     return !this->operator==(other);

rosidl_runtime_cpp/include/rosidl_runtime_cpp/type_description/type_description__struct.hpp

@@ -113,6 +113,7 @@ struct TypeDescription_
     ConstPtr;
 
   // comparison operators
+  [[nodiscard]]
   bool operator==(const TypeDescription_ & other) const
   {
     if (this->type_description != other.type_description) {
@@ -123,6 +124,7 @@ struct TypeDescription_
     }
     return true;
   }
+  [[nodiscard]]
   bool operator!=(const TypeDescription_ & other) const
   {
     return !this->operator==(other);

rosidl_runtime_cpp/include/rosidl_runtime_cpp/type_description/type_source__struct.hpp

@@ -130,6 +130,7 @@ struct TypeSource_
     ConstPtr;
 
   // comparison operators
+  [[nodiscard]]
   bool operator==(const TypeSource_ & other) const
   {
     if (this->type_name != other.type_name) {
@@ -143,6 +144,7 @@ struct TypeSource_
     }
     return true;
   }
+  [[nodiscard]]
   bool operator!=(const TypeSource_ & other) const
   {
     return !this->operator==(other);

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();