017d237ede
2016-06-22 Ed Schonberg <schonberg@adacore.com> * sem_prag.ads (Build_Classwide_Expression): new procedure to build the expression for an inherited classwide condition, and to validate such expressions when they apply to an inherited operation that is not overridden. * sem_prag.adb (Primitives_Mapping): new data structure to handle the mapping between operations of a root type and the corresponding overriding operations of a type extension. Used to construct the expression for an inherited classwide condition. (Update_Primitives_Mapping): add to Primitives_Mapping the links between primitive operations of a root type and those of a given type extension. (Build_Pragma_Check_Equivalent): use Primitives_Mapping. * sem_ch6.adb (New_Overloaded_Entity): Remove call to Collect_Iherited_Class_Wide_Conditions in GNATprove_Mode. This needs to be done at freeze point of the type. * freeze.adb (Check_Inherited_Conditions): new procedure to verify the legality of inherited classwide conditions. In normal compilation mode the procedure determines whether an inherited operation needs a wrapper to handle an inherited condition that differs from the condition of the root type. In SPARK mode the routine invokes Collect_Inherited_Class_Wide_Conditions to produce the SPARK version of these inherited conditions. (Freeze_Record_Type): For a type extension, call Check_Inherited_Conditions. From-SVN: r237698 |
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