: attrs(attrVec), refCount(0) {}
public:
- /// This method ensures the uniqueness of ParamAttrsList instances. The
+ /// This method ensures the uniqueness of ParamAttrsList instances. The
/// argument is a vector of attribute/index pairs as represented by the
- /// ParamAttrsWithIndex structure. The vector is used in the construction of
- /// the ParamAttrsList instance. If an instance with identical vector pairs
- /// exists, it will be returned instead of creating a new instance.
+ /// ParamAttrsWithIndex structure. The index values must be in strictly
+ /// increasing order and ParamAttr::None is not allowed. The vector is
+ /// used to construct the ParamAttrsList instance. If an instance with
+ /// identical vector pairs exists, it will be returned instead of creating
+ /// a new instance.
/// @brief Get a ParamAttrsList instance.
- static ParamAttrsList *get(const ParamAttrsVector &attrVec);
+ static const ParamAttrsList *get(const ParamAttrsVector &attrVec);
+
+ /// Returns the ParamAttrsList obtained by modifying PAL using the supplied
+ /// list of attribute/index pairs. Any existing attributes for the given
+ /// index are replaced by the given attributes. If there were no attributes
+ /// then the new ones are inserted. Attributes can be deleted by replacing
+ /// them with ParamAttr::None. Index values must be strictly increasing.
+ /// @brief Get a new ParamAttrsList instance by modifying an existing one.
+ static const ParamAttrsList *getModified(const ParamAttrsList *PAL,
+ const ParamAttrsVector &modVec);
/// Returns whether each of the specified lists of attributes can be safely
/// replaced with the other in a function or a function call.