| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT COMPILER COMPONENTS -- |
| -- -- |
| -- E X P _ P R A G -- |
| -- -- |
| -- B o d y -- |
| -- -- |
| -- Copyright (C) 1992-2010, Free Software Foundation, Inc. -- |
| -- -- |
| -- GNAT is free software; you can redistribute it and/or modify it under -- |
| -- terms of the GNU General Public License as published by the Free Soft- -- |
| -- ware Foundation; either version 3, or (at your option) any later ver- -- |
| -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- |
| -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- |
| -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- |
| -- for more details. You should have received a copy of the GNU General -- |
| -- Public License distributed with GNAT; see file COPYING3. If not, go to -- |
| -- http://www.gnu.org/licenses for a complete copy of the license. -- |
| -- -- |
| -- GNAT was originally developed by the GNAT team at New York University. -- |
| -- Extensive contributions were provided by Ada Core Technologies Inc. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| with Atree; use Atree; |
| with Casing; use Casing; |
| with Debug; use Debug; |
| with Einfo; use Einfo; |
| with Errout; use Errout; |
| with Exp_Ch11; use Exp_Ch11; |
| with Exp_Util; use Exp_Util; |
| with Expander; use Expander; |
| with Namet; use Namet; |
| with Nlists; use Nlists; |
| with Nmake; use Nmake; |
| with Opt; use Opt; |
| with Restrict; use Restrict; |
| with Rident; use Rident; |
| with Rtsfind; use Rtsfind; |
| with Sem; use Sem; |
| with Sem_Res; use Sem_Res; |
| with Sem_Util; use Sem_Util; |
| with Sinfo; use Sinfo; |
| with Sinput; use Sinput; |
| with Snames; use Snames; |
| with Stringt; use Stringt; |
| with Stand; use Stand; |
| with Targparm; use Targparm; |
| with Tbuild; use Tbuild; |
| with Uintp; use Uintp; |
| |
| package body Exp_Prag is |
| |
| ----------------------- |
| -- Local Subprograms -- |
| ----------------------- |
| |
| function Arg1 (N : Node_Id) return Node_Id; |
| function Arg2 (N : Node_Id) return Node_Id; |
| function Arg3 (N : Node_Id) return Node_Id; |
| -- Obtain specified pragma argument expression |
| |
| procedure Expand_Pragma_Abort_Defer (N : Node_Id); |
| procedure Expand_Pragma_Check (N : Node_Id); |
| procedure Expand_Pragma_Common_Object (N : Node_Id); |
| procedure Expand_Pragma_Import_Or_Interface (N : Node_Id); |
| procedure Expand_Pragma_Import_Export_Exception (N : Node_Id); |
| procedure Expand_Pragma_Inspection_Point (N : Node_Id); |
| procedure Expand_Pragma_Interrupt_Priority (N : Node_Id); |
| procedure Expand_Pragma_Psect_Object (N : Node_Id); |
| procedure Expand_Pragma_Relative_Deadline (N : Node_Id); |
| |
| ---------- |
| -- Arg1 -- |
| ---------- |
| |
| function Arg1 (N : Node_Id) return Node_Id is |
| Arg : constant Node_Id := First (Pragma_Argument_Associations (N)); |
| begin |
| if Present (Arg) |
| and then Nkind (Arg) = N_Pragma_Argument_Association |
| then |
| return Expression (Arg); |
| else |
| return Arg; |
| end if; |
| end Arg1; |
| |
| ---------- |
| -- Arg2 -- |
| ---------- |
| |
| function Arg2 (N : Node_Id) return Node_Id is |
| Arg1 : constant Node_Id := First (Pragma_Argument_Associations (N)); |
| |
| begin |
| if No (Arg1) then |
| return Empty; |
| |
| else |
| declare |
| Arg : constant Node_Id := Next (Arg1); |
| begin |
| if Present (Arg) |
| and then Nkind (Arg) = N_Pragma_Argument_Association |
| then |
| return Expression (Arg); |
| else |
| return Arg; |
| end if; |
| end; |
| end if; |
| end Arg2; |
| |
| ---------- |
| -- Arg3 -- |
| ---------- |
| |
| function Arg3 (N : Node_Id) return Node_Id is |
| Arg1 : constant Node_Id := First (Pragma_Argument_Associations (N)); |
| |
| begin |
| if No (Arg1) then |
| return Empty; |
| |
| else |
| declare |
| Arg : Node_Id := Next (Arg1); |
| begin |
| if No (Arg) then |
| return Empty; |
| |
| else |
| Next (Arg); |
| |
| if Present (Arg) |
| and then Nkind (Arg) = N_Pragma_Argument_Association |
| then |
| return Expression (Arg); |
| else |
| return Arg; |
| end if; |
| end if; |
| end; |
| end if; |
| end Arg3; |
| |
| --------------------- |
| -- Expand_N_Pragma -- |
| --------------------- |
| |
| procedure Expand_N_Pragma (N : Node_Id) is |
| Pname : constant Name_Id := Pragma_Name (N); |
| |
| begin |
| -- Note: we may have a pragma whose Pragma_Identifier field is not a |
| -- recognized pragma, and we must ignore it at this stage. |
| |
| if Is_Pragma_Name (Pname) then |
| case Get_Pragma_Id (Pname) is |
| |
| -- Pragmas requiring special expander action |
| |
| when Pragma_Abort_Defer => |
| Expand_Pragma_Abort_Defer (N); |
| |
| when Pragma_Check => |
| Expand_Pragma_Check (N); |
| |
| when Pragma_Common_Object => |
| Expand_Pragma_Common_Object (N); |
| |
| when Pragma_Export_Exception => |
| Expand_Pragma_Import_Export_Exception (N); |
| |
| when Pragma_Import => |
| Expand_Pragma_Import_Or_Interface (N); |
| |
| when Pragma_Import_Exception => |
| Expand_Pragma_Import_Export_Exception (N); |
| |
| when Pragma_Inspection_Point => |
| Expand_Pragma_Inspection_Point (N); |
| |
| when Pragma_Interface => |
| Expand_Pragma_Import_Or_Interface (N); |
| |
| when Pragma_Interrupt_Priority => |
| Expand_Pragma_Interrupt_Priority (N); |
| |
| when Pragma_Psect_Object => |
| Expand_Pragma_Psect_Object (N); |
| |
| when Pragma_Relative_Deadline => |
| Expand_Pragma_Relative_Deadline (N); |
| |
| -- All other pragmas need no expander action |
| |
| when others => null; |
| end case; |
| end if; |
| |
| end Expand_N_Pragma; |
| |
| ------------------------------- |
| -- Expand_Pragma_Abort_Defer -- |
| ------------------------------- |
| |
| -- An Abort_Defer pragma appears as the first statement in a handled |
| -- statement sequence (right after the begin). It defers aborts for |
| -- the entire statement sequence, but not for any declarations or |
| -- handlers (if any) associated with this statement sequence. |
| |
| -- The transformation is to transform |
| |
| -- pragma Abort_Defer; |
| -- statements; |
| |
| -- into |
| |
| -- begin |
| -- Abort_Defer.all; |
| -- statements |
| -- exception |
| -- when all others => |
| -- Abort_Undefer.all; |
| -- raise; |
| -- at end |
| -- Abort_Undefer_Direct; |
| -- end; |
| |
| procedure Expand_Pragma_Abort_Defer (N : Node_Id) is |
| Loc : constant Source_Ptr := Sloc (N); |
| Stm : Node_Id; |
| Stms : List_Id; |
| HSS : Node_Id; |
| Blk : constant Entity_Id := |
| New_Internal_Entity (E_Block, Current_Scope, Sloc (N), 'B'); |
| |
| begin |
| Stms := New_List (Build_Runtime_Call (Loc, RE_Abort_Defer)); |
| |
| loop |
| Stm := Remove_Next (N); |
| exit when No (Stm); |
| Append (Stm, Stms); |
| end loop; |
| |
| HSS := |
| Make_Handled_Sequence_Of_Statements (Loc, |
| Statements => Stms, |
| At_End_Proc => |
| New_Occurrence_Of (RTE (RE_Abort_Undefer_Direct), Loc)); |
| |
| Rewrite (N, |
| Make_Block_Statement (Loc, |
| Handled_Statement_Sequence => HSS)); |
| |
| Set_Scope (Blk, Current_Scope); |
| Set_Etype (Blk, Standard_Void_Type); |
| Set_Identifier (N, New_Occurrence_Of (Blk, Sloc (N))); |
| Expand_At_End_Handler (HSS, Blk); |
| Analyze (N); |
| end Expand_Pragma_Abort_Defer; |
| |
| -------------------------- |
| -- Expand_Pragma_Check -- |
| -------------------------- |
| |
| procedure Expand_Pragma_Check (N : Node_Id) is |
| Cond : constant Node_Id := Arg2 (N); |
| Loc : constant Source_Ptr := Sloc (Cond); |
| Nam : constant Name_Id := Chars (Arg1 (N)); |
| Msg : Node_Id; |
| |
| begin |
| -- We already know that this check is enabled, because otherwise the |
| -- semantic pass dealt with rewriting the assertion (see Sem_Prag) |
| |
| -- Since this check is enabled, we rewrite the pragma into a |
| -- corresponding if statement, and then analyze the statement |
| |
| -- The normal case expansion transforms: |
| |
| -- pragma Check (name, condition [,message]); |
| |
| -- into |
| |
| -- if not condition then |
| -- System.Assertions.Raise_Assert_Failure (Str); |
| -- end if; |
| |
| -- where Str is the message if one is present, or the default of |
| -- name failed at file:line if no message is given (the "name failed |
| -- at" is omitted for name = Assertion, since it is redundant, given |
| -- that the name of the exception is Assert_Failure.) |
| |
| -- An alternative expansion is used when the No_Exception_Propagation |
| -- restriction is active and there is a local Assert_Failure handler. |
| -- This is not a common combination of circumstances, but it occurs in |
| -- the context of Aunit and the zero footprint profile. In this case we |
| -- generate: |
| |
| -- if not condition then |
| -- raise Assert_Failure; |
| -- end if; |
| |
| -- This will then be transformed into a goto, and the local handler will |
| -- be able to handle the assert error (which would not be the case if a |
| -- call is made to the Raise_Assert_Failure procedure). |
| |
| -- We also generate the direct raise if the Suppress_Exception_Locations |
| -- is active, since we don't want to generate messages in this case. |
| |
| -- Note that the reason we do not always generate a direct raise is that |
| -- the form in which the procedure is called allows for more efficient |
| -- breakpointing of assertion errors. |
| |
| -- Generate the appropriate if statement. Note that we consider this to |
| -- be an explicit conditional in the source, not an implicit if, so we |
| -- do not call Make_Implicit_If_Statement. |
| |
| -- Case where we generate a direct raise |
| |
| if ((Debug_Flag_Dot_G |
| or else Restriction_Active (No_Exception_Propagation)) |
| and then Present (Find_Local_Handler (RTE (RE_Assert_Failure), N))) |
| or else (Opt.Exception_Locations_Suppressed and then No (Arg3 (N))) |
| then |
| Rewrite (N, |
| Make_If_Statement (Loc, |
| Condition => |
| Make_Op_Not (Loc, |
| Right_Opnd => Cond), |
| Then_Statements => New_List ( |
| Make_Raise_Statement (Loc, |
| Name => |
| New_Reference_To (RTE (RE_Assert_Failure), Loc))))); |
| |
| -- Case where we call the procedure |
| |
| else |
| -- If we have a message given, use it |
| |
| if Present (Arg3 (N)) then |
| Msg := Get_Pragma_Arg (Arg3 (N)); |
| |
| -- Here we have no string, so prepare one |
| |
| else |
| declare |
| Msg_Loc : constant String := Build_Location_String (Loc); |
| |
| begin |
| Name_Len := 0; |
| |
| -- For Assert, we just use the location |
| |
| if Nam = Name_Assertion then |
| null; |
| |
| -- For predicate, we generate the string "predicate failed |
| -- at yyy". We prefer all lower case for predicate. |
| |
| elsif Nam = Name_Predicate then |
| Add_Str_To_Name_Buffer ("predicate failed at "); |
| |
| -- For special case of Precondition/Postcondition the string is |
| -- "failed xx from yy" where xx is precondition/postcondition |
| -- in all lower case. The reason for this different wording is |
| -- that the failure is not at the point of occurrence of the |
| -- pragma, unlike the other Check cases. |
| |
| elsif Nam = Name_Precondition |
| or else |
| Nam = Name_Postcondition |
| then |
| Get_Name_String (Nam); |
| Insert_Str_In_Name_Buffer ("failed ", 1); |
| Add_Str_To_Name_Buffer (" from "); |
| |
| -- For all other checks, the string is "xxx failed at yyy" |
| -- where xxx is the check name with current source file casing. |
| |
| else |
| Get_Name_String (Nam); |
| Set_Casing (Identifier_Casing (Current_Source_File)); |
| Add_Str_To_Name_Buffer (" failed at "); |
| end if; |
| |
| -- In all cases, add location string |
| |
| Add_Str_To_Name_Buffer (Msg_Loc); |
| |
| -- Build the message |
| |
| Msg := Make_String_Literal (Loc, Name_Buffer (1 .. Name_Len)); |
| end; |
| end if; |
| |
| -- Now rewrite as an if statement |
| |
| Rewrite (N, |
| Make_If_Statement (Loc, |
| Condition => |
| Make_Op_Not (Loc, |
| Right_Opnd => Cond), |
| Then_Statements => New_List ( |
| Make_Procedure_Call_Statement (Loc, |
| Name => |
| New_Reference_To (RTE (RE_Raise_Assert_Failure), Loc), |
| Parameter_Associations => New_List (Relocate_Node (Msg)))))); |
| end if; |
| |
| Analyze (N); |
| |
| -- If new condition is always false, give a warning |
| |
| if Warn_On_Assertion_Failure |
| and then Nkind (N) = N_Procedure_Call_Statement |
| and then Is_RTE (Entity (Name (N)), RE_Raise_Assert_Failure) |
| then |
| -- If original condition was a Standard.False, we assume that this is |
| -- indeed intended to raise assert error and no warning is required. |
| |
| if Is_Entity_Name (Original_Node (Cond)) |
| and then Entity (Original_Node (Cond)) = Standard_False |
| then |
| return; |
| elsif Nam = Name_Assertion then |
| Error_Msg_N ("?assertion will fail at run time", N); |
| else |
| Error_Msg_N ("?check will fail at run time", N); |
| end if; |
| end if; |
| end Expand_Pragma_Check; |
| |
| --------------------------------- |
| -- Expand_Pragma_Common_Object -- |
| --------------------------------- |
| |
| -- Use a machine attribute to replicate semantic effect in DEC Ada |
| |
| -- pragma Machine_Attribute (intern_name, "common_object", extern_name); |
| |
| -- For now we do nothing with the size attribute ??? |
| |
| -- Note: Psect_Object shares this processing |
| |
| procedure Expand_Pragma_Common_Object (N : Node_Id) is |
| Loc : constant Source_Ptr := Sloc (N); |
| |
| Internal : constant Node_Id := Arg1 (N); |
| External : constant Node_Id := Arg2 (N); |
| |
| Psect : Node_Id; |
| -- Psect value upper cased as string literal |
| |
| Iloc : constant Source_Ptr := Sloc (Internal); |
| Eloc : constant Source_Ptr := Sloc (External); |
| Ploc : Source_Ptr; |
| |
| begin |
| -- Acquire Psect value and fold to upper case |
| |
| if Present (External) then |
| if Nkind (External) = N_String_Literal then |
| String_To_Name_Buffer (Strval (External)); |
| else |
| Get_Name_String (Chars (External)); |
| end if; |
| |
| Set_All_Upper_Case; |
| |
| Psect := |
| Make_String_Literal (Eloc, |
| Strval => String_From_Name_Buffer); |
| |
| else |
| Get_Name_String (Chars (Internal)); |
| Set_All_Upper_Case; |
| Psect := |
| Make_String_Literal (Iloc, |
| Strval => String_From_Name_Buffer); |
| end if; |
| |
| Ploc := Sloc (Psect); |
| |
| -- Insert the pragma |
| |
| Insert_After_And_Analyze (N, |
| Make_Pragma (Loc, |
| Chars => Name_Machine_Attribute, |
| Pragma_Argument_Associations => New_List ( |
| Make_Pragma_Argument_Association (Iloc, |
| Expression => New_Copy_Tree (Internal)), |
| Make_Pragma_Argument_Association (Eloc, |
| Expression => |
| Make_String_Literal (Sloc => Ploc, |
| Strval => "common_object")), |
| Make_Pragma_Argument_Association (Ploc, |
| Expression => New_Copy_Tree (Psect))))); |
| |
| end Expand_Pragma_Common_Object; |
| |
| --------------------------------------- |
| -- Expand_Pragma_Import_Or_Interface -- |
| --------------------------------------- |
| |
| -- When applied to a variable, the default initialization must not be |
| -- done. As it is already done when the pragma is found, we just get rid |
| -- of the call the initialization procedure which followed the object |
| -- declaration. The call is inserted after the declaration, but validity |
| -- checks may also have been inserted and the initialization call does |
| -- not necessarily appear immediately after the object declaration. |
| |
| -- We can't use the freezing mechanism for this purpose, since we |
| -- have to elaborate the initialization expression when it is first |
| -- seen (i.e. this elaboration cannot be deferred to the freeze point). |
| |
| procedure Expand_Pragma_Import_Or_Interface (N : Node_Id) is |
| Def_Id : constant Entity_Id := Entity (Arg2 (N)); |
| Init_Call : Node_Id; |
| |
| begin |
| if Ekind (Def_Id) = E_Variable then |
| |
| -- Find generated initialization call for object, if any |
| |
| Init_Call := Find_Init_Call (Def_Id, Rep_Clause => N); |
| if Present (Init_Call) then |
| Remove (Init_Call); |
| end if; |
| |
| -- Any default initialization expression should be removed |
| -- (e.g., null defaults for access objects, zero initialization |
| -- of packed bit arrays). Imported objects aren't allowed to |
| -- have explicit initialization, so the expression must have |
| -- been generated by the compiler. |
| |
| if No (Init_Call) and then Present (Expression (Parent (Def_Id))) then |
| Set_Expression (Parent (Def_Id), Empty); |
| end if; |
| end if; |
| end Expand_Pragma_Import_Or_Interface; |
| |
| ------------------------------------------- |
| -- Expand_Pragma_Import_Export_Exception -- |
| ------------------------------------------- |
| |
| -- For a VMS exception fix up the language field with "VMS" |
| -- instead of "Ada" (gigi needs this), create a constant that will be the |
| -- value of the VMS condition code and stuff the Interface_Name field |
| -- with the unexpanded name of the exception (if not already set). |
| -- For a Ada exception, just stuff the Interface_Name field |
| -- with the unexpanded name of the exception (if not already set). |
| |
| procedure Expand_Pragma_Import_Export_Exception (N : Node_Id) is |
| begin |
| -- This pragma is only effective on OpenVMS systems, it was ignored |
| -- on non-VMS systems, and we need to ignore it here as well. |
| |
| if not OpenVMS_On_Target then |
| return; |
| end if; |
| |
| declare |
| Id : constant Entity_Id := Entity (Arg1 (N)); |
| Call : constant Node_Id := Register_Exception_Call (Id); |
| Loc : constant Source_Ptr := Sloc (N); |
| |
| begin |
| if Present (Call) then |
| declare |
| Excep_Internal : constant Node_Id := Make_Temporary (Loc, 'V'); |
| Export_Pragma : Node_Id; |
| Excep_Alias : Node_Id; |
| Excep_Object : Node_Id; |
| Excep_Image : String_Id; |
| Exdata : List_Id; |
| Lang_Char : Node_Id; |
| Code : Node_Id; |
| |
| begin |
| if Present (Interface_Name (Id)) then |
| Excep_Image := Strval (Interface_Name (Id)); |
| else |
| Get_Name_String (Chars (Id)); |
| Set_All_Upper_Case; |
| Excep_Image := String_From_Name_Buffer; |
| end if; |
| |
| Exdata := Component_Associations (Expression (Parent (Id))); |
| |
| if Is_VMS_Exception (Id) then |
| Lang_Char := Next (First (Exdata)); |
| |
| -- Change the one-character language designator to 'V' |
| |
| Rewrite (Expression (Lang_Char), |
| Make_Character_Literal (Loc, |
| Chars => Name_uV, |
| Char_Literal_Value => |
| UI_From_Int (Character'Pos ('V')))); |
| Analyze (Expression (Lang_Char)); |
| |
| if Exception_Code (Id) /= No_Uint then |
| Code := |
| Make_Integer_Literal (Loc, |
| Intval => Exception_Code (Id)); |
| |
| Excep_Object := |
| Make_Object_Declaration (Loc, |
| Defining_Identifier => Excep_Internal, |
| Object_Definition => |
| New_Reference_To (RTE (RE_Exception_Code), Loc)); |
| |
| Insert_Action (N, Excep_Object); |
| Analyze (Excep_Object); |
| |
| Start_String; |
| Store_String_Int |
| (UI_To_Int (Exception_Code (Id)) / 8 * 8); |
| |
| Excep_Alias := |
| Make_Pragma |
| (Loc, |
| Name_Linker_Alias, |
| New_List |
| (Make_Pragma_Argument_Association |
| (Sloc => Loc, |
| Expression => |
| New_Reference_To (Excep_Internal, Loc)), |
| |
| Make_Pragma_Argument_Association |
| (Sloc => Loc, |
| Expression => |
| Make_String_Literal |
| (Sloc => Loc, |
| Strval => End_String)))); |
| |
| Insert_Action (N, Excep_Alias); |
| Analyze (Excep_Alias); |
| |
| Export_Pragma := |
| Make_Pragma |
| (Loc, |
| Name_Export, |
| New_List |
| (Make_Pragma_Argument_Association (Loc, |
| Expression => Make_Identifier (Loc, Name_C)), |
| |
| Make_Pragma_Argument_Association (Loc, |
| Expression => |
| New_Reference_To (Excep_Internal, Loc)), |
| |
| Make_Pragma_Argument_Association (Loc, |
| Expression => |
| Make_String_Literal (Loc, Excep_Image)), |
| |
| Make_Pragma_Argument_Association (Loc, |
| Expression => |
| Make_String_Literal (Loc, Excep_Image)))); |
| |
| Insert_Action (N, Export_Pragma); |
| Analyze (Export_Pragma); |
| |
| else |
| Code := |
| Unchecked_Convert_To (RTE (RE_Exception_Code), |
| Make_Function_Call (Loc, |
| Name => |
| New_Reference_To (RTE (RE_Import_Value), Loc), |
| Parameter_Associations => New_List |
| (Make_String_Literal (Loc, |
| Strval => Excep_Image)))); |
| end if; |
| |
| Rewrite (Call, |
| Make_Procedure_Call_Statement (Loc, |
| Name => New_Reference_To |
| (RTE (RE_Register_VMS_Exception), Loc), |
| Parameter_Associations => New_List ( |
| Code, |
| Unchecked_Convert_To (RTE (RE_Exception_Data_Ptr), |
| Make_Attribute_Reference (Loc, |
| Prefix => New_Occurrence_Of (Id, Loc), |
| Attribute_Name => Name_Unrestricted_Access))))); |
| |
| Analyze_And_Resolve (Code, RTE (RE_Exception_Code)); |
| Analyze (Call); |
| end if; |
| |
| if No (Interface_Name (Id)) then |
| Set_Interface_Name (Id, |
| Make_String_Literal |
| (Sloc => Loc, |
| Strval => Excep_Image)); |
| end if; |
| end; |
| end if; |
| end; |
| end Expand_Pragma_Import_Export_Exception; |
| |
| ------------------------------------ |
| -- Expand_Pragma_Inspection_Point -- |
| ------------------------------------ |
| |
| -- If no argument is given, then we supply a default argument list that |
| -- includes all objects declared at the source level in all subprograms |
| -- that enclose the inspection point pragma. |
| |
| procedure Expand_Pragma_Inspection_Point (N : Node_Id) is |
| Loc : constant Source_Ptr := Sloc (N); |
| A : List_Id; |
| Assoc : Node_Id; |
| S : Entity_Id; |
| E : Entity_Id; |
| |
| begin |
| if No (Pragma_Argument_Associations (N)) then |
| A := New_List; |
| S := Current_Scope; |
| |
| while S /= Standard_Standard loop |
| E := First_Entity (S); |
| while Present (E) loop |
| if Comes_From_Source (E) |
| and then Is_Object (E) |
| and then not Is_Entry_Formal (E) |
| and then Ekind (E) /= E_Component |
| and then Ekind (E) /= E_Discriminant |
| and then Ekind (E) /= E_Generic_In_Parameter |
| and then Ekind (E) /= E_Generic_In_Out_Parameter |
| then |
| Append_To (A, |
| Make_Pragma_Argument_Association (Loc, |
| Expression => New_Occurrence_Of (E, Loc))); |
| end if; |
| |
| Next_Entity (E); |
| end loop; |
| |
| S := Scope (S); |
| end loop; |
| |
| Set_Pragma_Argument_Associations (N, A); |
| end if; |
| |
| -- Expand the arguments of the pragma. Expanding an entity reference |
| -- is a noop, except in a protected operation, where a reference may |
| -- have to be transformed into a reference to the corresponding prival. |
| -- Are there other pragmas that may require this ??? |
| |
| Assoc := First (Pragma_Argument_Associations (N)); |
| |
| while Present (Assoc) loop |
| Expand (Expression (Assoc)); |
| Next (Assoc); |
| end loop; |
| end Expand_Pragma_Inspection_Point; |
| |
| -------------------------------------- |
| -- Expand_Pragma_Interrupt_Priority -- |
| -------------------------------------- |
| |
| -- Supply default argument if none exists (System.Interrupt_Priority'Last) |
| |
| procedure Expand_Pragma_Interrupt_Priority (N : Node_Id) is |
| Loc : constant Source_Ptr := Sloc (N); |
| |
| begin |
| if No (Pragma_Argument_Associations (N)) then |
| Set_Pragma_Argument_Associations (N, New_List ( |
| Make_Pragma_Argument_Association (Loc, |
| Expression => |
| Make_Attribute_Reference (Loc, |
| Prefix => |
| New_Occurrence_Of (RTE (RE_Interrupt_Priority), Loc), |
| Attribute_Name => Name_Last)))); |
| end if; |
| end Expand_Pragma_Interrupt_Priority; |
| |
| -------------------------------- |
| -- Expand_Pragma_Psect_Object -- |
| -------------------------------- |
| |
| -- Convert to Common_Object, and expand the resulting pragma |
| |
| procedure Expand_Pragma_Psect_Object (N : Node_Id) |
| renames Expand_Pragma_Common_Object; |
| |
| ------------------------------------- |
| -- Expand_Pragma_Relative_Deadline -- |
| ------------------------------------- |
| |
| procedure Expand_Pragma_Relative_Deadline (N : Node_Id) is |
| P : constant Node_Id := Parent (N); |
| Loc : constant Source_Ptr := Sloc (N); |
| |
| begin |
| -- Expand the pragma only in the case of the main subprogram. For tasks |
| -- the expansion is done in exp_ch9. Generate a call to Set_Deadline |
| -- at Clock plus the relative deadline specified in the pragma. Time |
| -- values are translated into Duration to allow for non-private |
| -- addition operation. |
| |
| if Nkind (P) = N_Subprogram_Body then |
| Rewrite |
| (N, |
| Make_Procedure_Call_Statement (Loc, |
| Name => New_Reference_To (RTE (RE_Set_Deadline), Loc), |
| Parameter_Associations => New_List ( |
| Unchecked_Convert_To (RTE (RO_RT_Time), |
| Make_Op_Add (Loc, |
| Left_Opnd => |
| Make_Function_Call (Loc, |
| New_Reference_To (RTE (RO_RT_To_Duration), Loc), |
| New_List (Make_Function_Call (Loc, |
| New_Reference_To (RTE (RE_Clock), Loc)))), |
| Right_Opnd => |
| Unchecked_Convert_To (Standard_Duration, Arg1 (N))))))); |
| |
| Analyze (N); |
| end if; |
| end Expand_Pragma_Relative_Deadline; |
| |
| end Exp_Prag; |