diff options
Diffstat (limited to 'gcc/ada/sem_ch3.adb')
-rw-r--r-- | gcc/ada/sem_ch3.adb | 76 |
1 files changed, 28 insertions, 48 deletions
diff --git a/gcc/ada/sem_ch3.adb b/gcc/ada/sem_ch3.adb index d230b11..e900cfa 100644 --- a/gcc/ada/sem_ch3.adb +++ b/gcc/ada/sem_ch3.adb @@ -4590,60 +4590,31 @@ package body Sem_Ch3 is -------------------------- procedure Analyze_Variant_Part (N : Node_Id) is + Discr_Name : Node_Id; + Discr_Type : Entity_Id; - procedure Non_Static_Choice_Error (Choice : Node_Id); - -- Error routine invoked by the generic instantiation below when the - -- variant part has a non static choice. - - procedure Process_Declarations (Variant : Node_Id); - -- Analyzes all the declarations associated with a Variant. Needed by - -- the generic instantiation below. - - package Variant_Choices_Processing is new - Generic_Choices_Processing - (Get_Alternatives => Variants, - Process_Empty_Choice => No_OP, - Process_Non_Static_Choice => Non_Static_Choice_Error, - Process_Associated_Node => Process_Declarations); - use Variant_Choices_Processing; - -- Instantiation of the generic choice processing package + procedure Process_Variant (A : Node_Id); + -- Analyze declarations for a single variant - ----------------------------- - -- Non_Static_Choice_Error -- - ----------------------------- + package Analyze_Variant_Choices is + new Generic_Analyze_Choices (Process_Variant); + use Analyze_Variant_Choices; - procedure Non_Static_Choice_Error (Choice : Node_Id) is - begin - Flag_Non_Static_Expr - ("choice given in variant part is not static!", Choice); - end Non_Static_Choice_Error; - - -------------------------- - -- Process_Declarations -- - -------------------------- + --------------------- + -- Process_Variant -- + --------------------- - procedure Process_Declarations (Variant : Node_Id) is + procedure Process_Variant (A : Node_Id) is + CL : constant Node_Id := Component_List (A); begin - if not Null_Present (Component_List (Variant)) then - Analyze_Declarations (Component_Items (Component_List (Variant))); + if not Null_Present (CL) then + Analyze_Declarations (Component_Items (CL)); - if Present (Variant_Part (Component_List (Variant))) then - Analyze (Variant_Part (Component_List (Variant))); + if Present (Variant_Part (CL)) then + Analyze (Variant_Part (CL)); end if; end if; - end Process_Declarations; - - -- Local Variables - - Discr_Name : Node_Id; - Discr_Type : Entity_Id; - - Dont_Care : Boolean; - Others_Present : Boolean := False; - - pragma Warnings (Off, Dont_Care); - pragma Warnings (Off, Others_Present); - -- We don't care about the assigned values of any of these + end Process_Variant; -- Start of processing for Analyze_Variant_Part @@ -4672,9 +4643,18 @@ package body Sem_Ch3 is return; end if; - -- Call the instantiated Analyze_Choices which does the rest of the work + -- Now analyze the choices, which also analyzes the declarations that + -- are associated with each choice. + + Analyze_Choices (Variants (N), Discr_Type); + + -- Note: we used to instantiate and call Check_Choices here to check + -- that the choices covered the discriminant, but it's too early to do + -- that because of statically predicated subtypes, whose analysis may + -- be deferred to their freeze point which may be as late as the freeze + -- point of the containing record. So this call is now to be found in + -- Freeze_Record_Declaration. - Analyze_Choices (N, Discr_Type, Dont_Care, Others_Present); end Analyze_Variant_Part; ---------------------------- |