-- to complete the syntax checks. Certain pragmas are handled partially or
-- completely by the parser (see Par.Prag for further details).
+with Aspects; use Aspects;
with Atree; use Atree;
with Casing; use Casing;
with Checks; use Checks;
with Errout; use Errout;
with Exp_Dist; use Exp_Dist;
with Exp_Util; use Exp_Util;
+with Freeze; use Freeze;
with Lib; use Lib;
with Lib.Writ; use Lib.Writ;
with Lib.Xref; use Lib.Xref;
-- original one, following the renaming chain) is returned. Otherwise the
-- entity is returned unchanged. Should be in Einfo???
- procedure Preanalyze_TC_Args (Arg_Req, Arg_Ens : Node_Id);
+ procedure Preanalyze_TC_Args (N, Arg_Req, Arg_Ens : Node_Id);
-- Preanalyze the boolean expressions in the Requires and Ensures arguments
-- of a Test_Case pragma if present (possibly Empty). We treat these as
-- spec expressions (i.e. similar to a default expression).
-- Preanalyze the boolean expression, we treat this as a spec expression
-- (i.e. similar to a default expression).
- Preanalyze_Spec_Expression
- (Get_Pragma_Arg (Arg1), Standard_Boolean);
+ Preanalyze_Spec_Expression (Get_Pragma_Arg (Arg1), Standard_Boolean);
+
+ -- In ASIS mode, for a pragma generated from a source aspect, also
+ -- analyze the original aspect expression.
+
+ if ASIS_Mode
+ and then Present (Corresponding_Aspect (N))
+ then
+ Preanalyze_Spec_Expression
+ (Expression (Corresponding_Aspect (N)), Standard_Boolean);
+ end if;
+
+ -- For a class-wide condition, a reference to a controlling formal must
+ -- be interpreted as having the class-wide type (or an access to such)
+ -- so that the inherited condition can be properly applied to any
+ -- overriding operation (see ARM12 6.6.1 (7)).
+
+ if Class_Present (N) then
+ declare
+ T : constant Entity_Id := Find_Dispatching_Type (S);
+
+ ACW : Entity_Id := Empty;
+ -- Access to T'class, created if there is a controlling formal
+ -- that is an access parameter.
+
+ function Get_ACW return Entity_Id;
+ -- If the expression has a reference to an controlling access
+ -- parameter, create an access to T'class for the necessary
+ -- conversions if one does not exist.
+
+ function Process (N : Node_Id) return Traverse_Result;
+ -- ARM 6.1.1: Within the expression for a Pre'Class or Post'Class
+ -- aspect for a primitive subprogram of a tagged type T, a name
+ -- that denotes a formal parameter of type T is interpreted as
+ -- having type T'Class. Similarly, a name that denotes a formal
+ -- accessparameter of type access-to-T is interpreted as having
+ -- type access-to-T'Class. This ensures the expression is well-
+ -- defined for a primitive subprogram of a type descended from T.
+
+ -------------
+ -- Get_ACW --
+ -------------
+
+ function Get_ACW return Entity_Id is
+ Loc : constant Source_Ptr := Sloc (N);
+ Decl : Node_Id;
+
+ begin
+ if No (ACW) then
+ Decl := Make_Full_Type_Declaration (Loc,
+ Defining_Identifier => Make_Temporary (Loc, 'T'),
+ Type_Definition =>
+ Make_Access_To_Object_Definition (Loc,
+ Subtype_Indication =>
+ New_Occurrence_Of (Class_Wide_Type (T), Loc),
+ All_Present => True));
+
+ Insert_Before (Unit_Declaration_Node (S), Decl);
+ Analyze (Decl);
+ ACW := Defining_Identifier (Decl);
+ Freeze_Before (Unit_Declaration_Node (S), ACW);
+ end if;
+
+ return ACW;
+ end Get_ACW;
+
+ -------------
+ -- Process --
+ -------------
+
+ function Process (N : Node_Id) return Traverse_Result is
+ Loc : constant Source_Ptr := Sloc (N);
+ Typ : Entity_Id;
+
+ begin
+ if Is_Entity_Name (N)
+ and then Is_Formal (Entity (N))
+ and then Nkind (Parent (N)) /= N_Type_Conversion
+ then
+ if Etype (Entity (N)) = T then
+ Typ := Class_Wide_Type (T);
+
+ elsif Is_Access_Type (Etype (Entity (N)))
+ and then Designated_Type (Etype (Entity (N))) = T
+ then
+ Typ := Get_ACW;
+ else
+ Typ := Empty;
+ end if;
+
+ if Present (Typ) then
+ Rewrite (N,
+ Make_Type_Conversion (Loc,
+ Subtype_Mark =>
+ New_Occurrence_Of (Typ, Loc),
+ Expression => New_Occurrence_Of (Entity (N), Loc)));
+ Set_Etype (N, Typ);
+ end if;
+ end if;
+
+ return OK;
+ end Process;
+
+ procedure Replace_Type is new Traverse_Proc (Process);
+
+ begin
+ Replace_Type (Get_Pragma_Arg (Arg1));
+ end;
+ end if;
-- Remove the subprogram from the scope stack now that the pre-analysis
-- of the precondition/postcondition is done.
procedure Analyze_Pragma (N : Node_Id) is
Loc : constant Source_Ptr := Sloc (N);
- Pname : constant Name_Id := Pragma_Name (N);
Prag_Id : Pragma_Id;
+ Pname : Name_Id;
+ -- Name of the source pragma, or name of the corresponding aspect for
+ -- pragmas which originate in a source aspect. In the latter case, the
+ -- name may be different from the pragma name.
+
Pragma_Exit : exception;
-- This exception is used to exit pragma processing completely. It is
-- used when an error is detected, and no further processing is
-- This procedure checks for possible duplications if this is the export
-- case, and if found, issues an appropriate error message.
+ procedure Check_Expr_Is_Static_Expression
+ (Expr : Node_Id;
+ Typ : Entity_Id := Empty);
+ -- Check the specified expression Expr to make sure that it is a static
+ -- expression of the given type (i.e. it will be analyzed and resolved
+ -- using this type, which can be any valid argument to Resolve, e.g.
+ -- Any_Integer is OK). If not, given error and raise Pragma_Exit. If
+ -- Typ is left Empty, then any static expression is allowed.
+
procedure Check_First_Subtype (Arg : Node_Id);
-- Checks that Arg, whose expression is an entity name, references a
-- first subtype.
-- convention value in the specified entity or entities. On return
-- C is the convention, Ent is the referenced entity.
+ procedure Process_Disable_Enable_Atomic_Sync (Nam : Name_Id);
+ -- Common processing for Disable/Enable_Atomic_Synchronization. Nam is
+ -- Name_Suppress for Disable and Name_Unsuppress for Enable.
+
procedure Process_Extended_Import_Export_Exception_Pragma
(Arg_Internal : Node_Id;
Arg_External : Node_Id;
if Is_Compilation_Unit (Ent) then
declare
Decl : constant Node_Id := Unit_Declaration_Node (Ent);
+
begin
-- Case of pragma placed immediately after spec
(Arg : Node_Id;
Typ : Entity_Id := Empty)
is
- Argx : constant Node_Id := Get_Pragma_Arg (Arg);
-
begin
- if Present (Typ) then
- Analyze_And_Resolve (Argx, Typ);
- else
- Analyze_And_Resolve (Argx);
- end if;
-
- if Is_OK_Static_Expression (Argx) then
- return;
-
- elsif Etype (Argx) = Any_Type then
- raise Pragma_Exit;
-
- -- An interesting special case, if we have a string literal and we
- -- are in Ada 83 mode, then we allow it even though it will not be
- -- flagged as static. This allows the use of Ada 95 pragmas like
- -- Import in Ada 83 mode. They will of course be flagged with
- -- warnings as usual, but will not cause errors.
-
- elsif Ada_Version = Ada_83
- and then Nkind (Argx) = N_String_Literal
- then
- return;
-
- -- Static expression that raises Constraint_Error. This has already
- -- been flagged, so just exit from pragma processing.
-
- elsif Is_Static_Expression (Argx) then
- raise Pragma_Exit;
-
- -- Finally, we have a real error
-
- else
- Error_Msg_Name_1 := Pname;
-
- declare
- Msg : String :=
- "argument for pragma% must be a static expression!";
- begin
- Fix_Error (Msg);
- Flag_Non_Static_Expr (Msg, Argx);
- end;
-
- raise Pragma_Exit;
- end if;
+ Check_Expr_Is_Static_Expression (Get_Pragma_Arg (Arg), Typ);
end Check_Arg_Is_Static_Expression;
------------------------------------------
end if;
end Check_Duplicated_Export_Name;
+ -------------------------------------
+ -- Check_Expr_Is_Static_Expression --
+ -------------------------------------
+
+ procedure Check_Expr_Is_Static_Expression
+ (Expr : Node_Id;
+ Typ : Entity_Id := Empty)
+ is
+ begin
+ if Present (Typ) then
+ Analyze_And_Resolve (Expr, Typ);
+ else
+ Analyze_And_Resolve (Expr);
+ end if;
+
+ if Is_OK_Static_Expression (Expr) then
+ return;
+
+ elsif Etype (Expr) = Any_Type then
+ raise Pragma_Exit;
+
+ -- An interesting special case, if we have a string literal and we
+ -- are in Ada 83 mode, then we allow it even though it will not be
+ -- flagged as static. This allows the use of Ada 95 pragmas like
+ -- Import in Ada 83 mode. They will of course be flagged with
+ -- warnings as usual, but will not cause errors.
+
+ elsif Ada_Version = Ada_83
+ and then Nkind (Expr) = N_String_Literal
+ then
+ return;
+
+ -- Static expression that raises Constraint_Error. This has already
+ -- been flagged, so just exit from pragma processing.
+
+ elsif Is_Static_Expression (Expr) then
+ raise Pragma_Exit;
+
+ -- Finally, we have a real error
+
+ else
+ Error_Msg_Name_1 := Pname;
+
+ declare
+ Msg : String :=
+ "argument for pragma% must be a static expression!";
+ begin
+ Fix_Error (Msg);
+ Flag_Non_Static_Expr (Msg, Expr);
+ end;
+
+ raise Pragma_Exit;
+ end if;
+ end Check_Expr_Is_Static_Expression;
+
-------------------------
-- Check_First_Subtype --
-------------------------
Chain_PPC (PO);
return;
+ elsif Nkind (PO) = N_Subprogram_Declaration
+ and then In_Instance
+ then
+ Chain_PPC (PO);
+ return;
+
-- For all other cases of non source code, do nothing
else
Preanalyze_Spec_Expression
(Get_Pragma_Arg (Arg1), Standard_Boolean);
+
+ -- In ASIS mode, for a pragma generated from a source aspect,
+ -- also analyze the original aspect expression.
+
+ if ASIS_Mode
+ and then Present (Corresponding_Aspect (N))
+ then
+ Preanalyze_Spec_Expression
+ (Expression (Corresponding_Aspect (N)), Standard_Boolean);
+ end if;
end if;
In_Body := True;
("second argument of pragma% must be a subprogram", Arg2);
end if;
- -- For Stdcall, a subprogram, variable or subprogram type is required
+ -- Stdcall case
if C = Convention_Stdcall
- and then not Is_Subprogram (E)
- and then not Is_Generic_Subprogram (E)
+
+ -- Subprogram is allowed, but not a generic subprogram, and not a
+ -- dispatching operation. A dispatching subprogram cannot be used
+ -- to interface to the Win32 API, so in fact this check does not
+ -- impose any effective restriction.
+
+ and then
+ ((not Is_Subprogram (E) and then not Is_Generic_Subprogram (E))
+ or else Is_Dispatching_Operation (E))
+
+ -- A variable is OK
+
and then Ekind (E) /= E_Variable
+
+ -- An access to subprogram is also allowed
+
and then not
(Is_Access_Type (E)
and then Ekind (Designated_Type (E)) = E_Subprogram_Type)
end if;
end Process_Convention;
+ ----------------------------------------
+ -- Process_Disable_Enable_Atomic_Sync --
+ ----------------------------------------
+
+ procedure Process_Disable_Enable_Atomic_Sync (Nam : Name_Id) is
+ begin
+ GNAT_Pragma;
+ Check_No_Identifiers;
+ Check_At_Most_N_Arguments (1);
+
+ -- Modeled internally as
+ -- pragma Unsuppress (Atomic_Synchronization [,Entity])
+
+ Rewrite (N,
+ Make_Pragma (Loc,
+ Pragma_Identifier =>
+ Make_Identifier (Loc, Nam),
+ Pragma_Argument_Associations => New_List (
+ Make_Pragma_Argument_Association (Loc,
+ Expression =>
+ Make_Identifier (Loc, Name_Atomic_Synchronization)))));
+
+ if Present (Arg1) then
+ Append_To (Pragma_Argument_Associations (N), New_Copy (Arg1));
+ end if;
+
+ Analyze (N);
+ end Process_Disable_Enable_Atomic_Sync;
+
-----------------------------------------------------
-- Process_Extended_Import_Export_Exception_Pragma --
-----------------------------------------------------
-- For the pragma case, climb homonym chain. This is
-- what implements allowing the pragma in the renaming
- -- case, with the result applying to the ancestors.
+ -- case, with the result applying to the ancestors, and
+ -- also allows Inline to apply to all previous homonyms.
if not From_Aspect_Specification (N) then
while Present (Homonym (Subp))
Check_Restriction (No_Implementation_Restrictions, Arg);
end if;
+ -- Special processing for No_Elaboration_Code restriction
+
+ if R_Id = No_Elaboration_Code then
+
+ -- Restriction is only recognized within a configuration
+ -- pragma file, or within a unit of the main extended
+ -- program. Note: the test for Main_Unit is needed to
+ -- properly include the case of configuration pragma files.
+
+ if not (Current_Sem_Unit = Main_Unit
+ or else In_Extended_Main_Source_Unit (N))
+ then
+ return;
+
+ -- Don't allow in a subunit unless already specified in
+ -- body or spec.
+
+ elsif Nkind (Parent (N)) = N_Compilation_Unit
+ and then Nkind (Unit (Parent (N))) = N_Subunit
+ and then not Restriction_Active (No_Elaboration_Code)
+ then
+ Error_Msg_N
+ ("invalid specification of ""No_Elaboration_Code""",
+ N);
+ Error_Msg_N
+ ("\restriction cannot be specified in a subunit", N);
+ Error_Msg_N
+ ("\unless also specified in body or spec", N);
+ return;
+
+ -- If we have a No_Elaboration_Code pragma that we
+ -- accept, then it needs to be added to the configuration
+ -- restrcition set so that we get proper application to
+ -- other units in the main extended source as required.
+
+ else
+ Add_To_Config_Boolean_Restrictions (No_Elaboration_Code);
+ end if;
+ end if;
+
-- If this is a warning, then set the warning unless we already
-- have a real restriction active (we never want a warning to
-- override a real restriction).
-- H.4(12). Restriction_Warnings never affects generated code
-- so this is done only in the real restriction case.
+ -- Atomic_Synchronization is not a real check, so it is not
+ -- affected by this processing).
+
if R_Id = No_Exceptions and then not Warn then
- Scope_Suppress := (others => True);
+ for J in Scope_Suppress'Range loop
+ if J /= Atomic_Synchronization then
+ Scope_Suppress (J) := True;
+ end if;
+ end loop;
end if;
-- Case of No_Dependence => unit-name. Note that the parser
elsif Id = Name_No_Dependence then
Check_Unit_Name (Expr);
+ -- Case of No_Specification_Of_Aspect => Identifier.
+
+ elsif Id = Name_No_Specification_Of_Aspect then
+ declare
+ A_Id : Aspect_Id;
+
+ begin
+ if Nkind (Expr) /= N_Identifier then
+ A_Id := No_Aspect;
+ else
+ A_Id := Get_Aspect_Id (Chars (Expr));
+ end if;
+
+ if A_Id = No_Aspect then
+ Error_Pragma_Arg ("invalid restriction name", Arg);
+ else
+ Set_Restriction_No_Specification_Of_Aspect (Expr, Warn);
+ end if;
+ end;
+
-- All other cases of restriction identifier present
else
procedure Suppress_Unsuppress_Echeck (E : Entity_Id; C : Check_Id) is
begin
+ -- Check for error of trying to set atomic synchronization for
+ -- a non-atomic variable.
+
+ if C = Atomic_Synchronization
+ and then not (Is_Atomic (E) or else Has_Atomic_Components (E))
+ then
+ Error_Msg_N
+ ("pragma & requires atomic type or variable",
+ Pragma_Identifier (Original_Node (N)));
+ end if;
+
Set_Checks_May_Be_Suppressed (E);
if In_Package_Spec then
(Entity => E,
Check => C,
Suppress => Suppress_Case);
-
else
Push_Local_Suppress_Stack_Entry
(Entity => E,
-- the exception of Elaboration_Check, which is handled
-- specially because of not wanting All_Checks to have the
-- effect of deactivating static elaboration order processing.
+ -- Atomic_Synchronization is also not affected, since this is
+ -- not a real check.
for J in Scope_Suppress'Range loop
- if J /= Elaboration_Check then
+ if J /= Elaboration_Check
+ and then J /= Atomic_Synchronization
+ then
Scope_Suppress (J) := Suppress_Case;
end if;
end loop;
-- If not All_Checks, and predefined check, then set appropriate
-- scope entry. Note that we will set Elaboration_Check if this
- -- is explicitly specified.
+ -- is explicitly specified. Atomic_Synchronization is allowed
+ -- only if internally generated and entity is atomic.
- elsif C in Predefined_Check_Id then
+ elsif C in Predefined_Check_Id
+ and then (not Comes_From_Source (N)
+ or else C /= Atomic_Synchronization)
+ then
Scope_Suppress (C) := Suppress_Case;
end if;
-- Deal with unrecognized pragma
+ Pname := Pragma_Name (N);
+
if not Is_Pragma_Name (Pname) then
if Warn_On_Unrecognized_Pragma then
Error_Msg_Name_1 := Pname;
Prag_Id := Get_Pragma_Id (Pname);
+ if Present (Corresponding_Aspect (N)) then
+ Pname := Chars (Identifier (Corresponding_Aspect (N)));
+ end if;
+
-- Preset arguments
Arg_Count := 0;
Error_Pragma_Arg ("inappropriate entity for pragma%", Arg1);
end if;
end Atomic_Components;
-
--------------------
-- Attach_Handler --
--------------------
N_Indexed_Component,
N_Function_Call,
N_Identifier,
+ N_Expanded_Name,
N_Selected_Component)
then
-- If this pragma Debug comes from source, its argument was
-- parsed as a name form (which is syntactically identical).
+ -- In a generic context a parameterless call will be left as
+ -- an expanded name (if global) or selected_component if local.
-- Change it to a procedure call statement now.
Change_Name_To_Procedure_Call_Statement (Call);
-- All other cases: diagnose error
Error_Msg
- ("argument of pragma% is not procedure call", Sloc (Call));
+ ("argument of pragma ""Debug"" is not procedure call",
+ Sloc (Call));
return;
end if;
Check_Arg_Is_Static_Expression (Arg3, Standard_Integer);
Check_Arg_Is_Static_Expression (Arg4, Standard_Integer);
+ ------------------------------------
+ -- Disable_Atomic_Synchronization --
+ ------------------------------------
+
+ -- pragma Disable_Atomic_Synchronization [(Entity)];
+
+ when Pragma_Disable_Atomic_Synchronization =>
+ Process_Disable_Enable_Atomic_Sync (Name_Suppress);
+
-------------------
-- Discard_Names --
-------------------
end if;
end Discard_Names;
+ ------------------------
+ -- Dispatching_Domain --
+ ------------------------
+
+ -- pragma Dispatching_Domain (EXPRESSION);
+
+ when Pragma_Dispatching_Domain => Dispatching_Domain : declare
+ P : constant Node_Id := Parent (N);
+ Arg : Node_Id;
+
+ begin
+ Ada_2012_Pragma;
+ Check_No_Identifiers;
+ Check_Arg_Count (1);
+
+ -- This pragma is born obsolete, but not the aspect
+
+ if not From_Aspect_Specification (N) then
+ Check_Restriction
+ (No_Obsolescent_Features, Pragma_Identifier (N));
+ end if;
+
+ if Nkind (P) = N_Task_Definition then
+ Arg := Get_Pragma_Arg (Arg1);
+
+ -- The expression must be analyzed in the special manner
+ -- described in "Handling of Default and Per-Object
+ -- Expressions" in sem.ads.
+
+ Preanalyze_Spec_Expression (Arg, RTE (RE_Dispatching_Domain));
+
+ -- Anything else is incorrect
+
+ else
+ Pragma_Misplaced;
+ end if;
+
+ if Has_Pragma_Dispatching_Domain (P) then
+ Error_Pragma ("duplicate pragma% not allowed");
+ else
+ Set_Has_Pragma_Dispatching_Domain (P, True);
+
+ if Nkind (P) = N_Task_Definition then
+ Record_Rep_Item (Defining_Identifier (Parent (P)), N);
+ end if;
+ end if;
+ end Dispatching_Domain;
+
---------------
-- Elaborate --
---------------
Source_Location);
end Eliminate;
+ -----------------------------------
+ -- Enable_Atomic_Synchronization --
+ -----------------------------------
+
+ -- pragma Enable_Atomic_Synchronization [(Entity)];
+
+ when Pragma_Enable_Atomic_Synchronization =>
+ Process_Disable_Enable_Atomic_Sync (Name_Unsuppress);
+
------------
-- Export --
------------
end;
end Ident;
+ ----------------------------
+ -- Implementation_Defined --
+ ----------------------------
+
+ -- pragma Implementation_Defined (local_NAME);
+
+ -- Marks previously declared entity as implementation defined. For
+ -- an overloaded entity, applies to the most recent homonym.
+
+ -- pragma Implementation_Defined;
+
+ -- The form with no arguments appears anywhere within a scope, most
+ -- typically a package spec, and indicates that all entities that are
+ -- defined within the package spec are Implementation_Defined.
+
+ when Pragma_Implementation_Defined => Implementation_Defined : declare
+ Ent : Entity_Id;
+
+ begin
+ Check_No_Identifiers;
+
+ -- Form with no arguments
+
+ if Arg_Count = 0 then
+ Set_Is_Implementation_Defined (Current_Scope);
+
+ -- Form with one argument
+
+ else
+ Check_Arg_Count (1);
+ Check_Arg_Is_Local_Name (Arg1);
+ Ent := Entity (Get_Pragma_Arg (Arg1));
+ Set_Is_Implementation_Defined (Ent);
+ end if;
+ end Implementation_Defined;
+
-----------------
-- Implemented --
-----------------
if Typ = Any_Type then
return;
- elsif not Ekind_In (Typ, E_Private_Type,
- E_Record_Type_With_Private,
- E_Limited_Private_Type)
+ -- An invariant must apply to a private type, or appear in the
+ -- private part of a package spec and apply to a completion.
+
+ elsif Ekind_In (Typ, E_Private_Type,
+ E_Record_Type_With_Private,
+ E_Limited_Private_Type)
then
+ null;
+
+ elsif In_Private_Part (Current_Scope)
+ and then Has_Private_Declaration (Typ)
+ then
+ null;
+
+ elsif In_Private_Part (Current_Scope) then
+ Error_Pragma_Arg
+ ("pragma% only allowed for private type " &
+ "declared in visible part", Arg1);
+
+ else
Error_Pragma_Arg
("pragma% only allowed for private type", Arg1);
end if;
-- pragma Locking_Policy (policy_IDENTIFIER);
when Pragma_Locking_Policy => declare
- LP : Character;
-
+ subtype LP_Range is Name_Id
+ range First_Locking_Policy_Name .. Last_Locking_Policy_Name;
+ LP_Val : LP_Range;
+ LP : Character;
begin
Check_Ada_83_Warning;
Check_Arg_Count (1);
Check_No_Identifiers;
Check_Arg_Is_Locking_Policy (Arg1);
Check_Valid_Configuration_Pragma;
- Get_Name_String (Chars (Get_Pragma_Arg (Arg1)));
- LP := Fold_Upper (Name_Buffer (1));
+ LP_Val := Chars (Get_Pragma_Arg (Arg1));
+
+ case LP_Val is
+ when Name_Ceiling_Locking => LP := 'C';
+ when Name_Inheritance_Locking => LP := 'I';
+ when Name_Concurrent_Readers_Locking => LP := 'R';
+ end case;
if Locking_Policy /= ' '
and then Locking_Policy /= LP
-- pragma Long_Float (D_Float | G_Float);
- when Pragma_Long_Float =>
+ when Pragma_Long_Float => Long_Float : declare
+ begin
GNAT_Pragma;
Check_Valid_Configuration_Pragma;
Check_Arg_Count (1);
if Chars (Get_Pragma_Arg (Arg1)) = Name_D_Float then
if Opt.Float_Format_Long = 'G' then
- Error_Pragma ("G_Float previously specified");
- end if;
+ Error_Pragma_Arg
+ ("G_Float previously specified", Arg1);
- Opt.Float_Format_Long := 'D';
+ elsif Current_Sem_Unit /= Main_Unit
+ and then Opt.Float_Format_Long /= 'D'
+ then
+ Error_Pragma_Arg
+ ("main unit not compiled with pragma Long_Float (D_Float)",
+ "\pragma% must be used consistently for whole partition",
+ Arg1);
+
+ else
+ Opt.Float_Format_Long := 'D';
+ end if;
-- G_Float case (this is the default, does not need overriding)
else
if Opt.Float_Format_Long = 'D' then
Error_Pragma ("D_Float previously specified");
- end if;
- Opt.Float_Format_Long := 'G';
+ elsif Current_Sem_Unit /= Main_Unit
+ and then Opt.Float_Format_Long /= 'G'
+ then
+ Error_Pragma_Arg
+ ("main unit not compiled with pragma Long_Float (G_Float)",
+ "\pragma% must be used consistently for whole partition",
+ Arg1);
+
+ else
+ Opt.Float_Format_Long := 'G';
+ end if;
end if;
Set_Standard_Fpt_Formats;
+ end Long_Float;
-----------------------
-- Machine_Attribute --
declare
Argx : constant Node_Id := Get_Pragma_Arg (Arg1);
+
begin
if Chars (Argx) = Name_Ravenscar then
Set_Ravenscar_Profile (N);
+
elsif Chars (Argx) = Name_Restricted then
Set_Profile_Restrictions
- (Restricted, N, Warn => Treat_Restrictions_As_Warnings);
+ (Restricted,
+ N, Warn => Treat_Restrictions_As_Warnings);
+
+ elsif Chars (Argx) = Name_No_Implementation_Extensions then
+ Set_Profile_Restrictions
+ (No_Implementation_Extensions,
+ N, Warn => Treat_Restrictions_As_Warnings);
+
else
Error_Pragma_Arg ("& is not a valid profile", Argx);
end if;
declare
Argx : constant Node_Id := Get_Pragma_Arg (Arg1);
+
begin
if Chars (Argx) = Name_Ravenscar then
Set_Profile_Restrictions (Ravenscar, N, Warn => True);
+
elsif Chars (Argx) = Name_Restricted then
Set_Profile_Restrictions (Restricted, N, Warn => True);
+
+ elsif Chars (Argx) = Name_No_Implementation_Extensions then
+ Set_Profile_Restrictions
+ (No_Implementation_Extensions, N, Warn => True);
+
else
Error_Pragma_Arg ("& is not a valid profile", Argx);
end if;
end if;
end Pure_05;
+ -------------
+ -- Pure_12 --
+ -------------
+
+ -- pragma Pure_12 [(library_unit_NAME)];
+
+ -- This pragma is useable only in GNAT_Mode, where it is used like
+ -- pragma Pure but it is only effective in Ada 2012 mode (otherwise
+ -- it is ignored). It may be used after a pragma Preelaborate, in
+ -- which case it overrides the effect of the pragma Preelaborate.
+ -- This is used to implement AI05-0212 which recategorizes some
+ -- run-time packages in Ada 2012 mode.
+
+ when Pragma_Pure_12 => Pure_12 : declare
+ Ent : Entity_Id;
+
+ begin
+ GNAT_Pragma;
+ Check_Valid_Library_Unit_Pragma;
+
+ if not GNAT_Mode then
+ Error_Pragma ("pragma% only available in GNAT mode");
+ end if;
+
+ if Nkind (N) = N_Null_Statement then
+ return;
+ end if;
+
+ -- This is one of the few cases where we need to test the value of
+ -- Ada_Version_Explicit rather than Ada_Version (which is always
+ -- set to Ada_2012 in a predefined unit), we need to know the
+ -- explicit version set to know if this pragma is active.
+
+ if Ada_Version_Explicit >= Ada_2012 then
+ Ent := Find_Lib_Unit_Name;
+ Set_Is_Preelaborated (Ent, False);
+ Set_Is_Pure (Ent);
+ Set_Suppress_Elaboration_Warnings (Ent);
+ end if;
+ end Pure_12;
+
-------------------
-- Pure_Function --
-------------------
Check_Optional_Identifier (Arg1, Name_Name);
Check_Arg_Is_Static_Expression (Arg1, Standard_String);
+
+ -- In ASIS mode, for a pragma generated from a source aspect, also
+ -- analyze the original aspect expression.
+
+ if ASIS_Mode
+ and then Present (Corresponding_Aspect (N))
+ then
+ Check_Expr_Is_Static_Expression
+ (Original_Node (Get_Pragma_Arg (Arg1)), Standard_String);
+ end if;
+
Check_Optional_Identifier (Arg2, Name_Mode);
Check_Arg_Is_One_Of (Arg2, Name_Nominal, Name_Robustness);
Error_Msg_N ("Unchecked_Union must not be tagged", Typ);
return;
- elsif Is_Limited_Type (Typ) then
+ elsif not Has_Discriminants (Typ) then
Error_Msg_N
- ("Unchecked_Union must not be limited record type", Typ);
- Explain_Limited_Type (Typ, Typ);
+ ("Unchecked_Union must have one discriminant", Typ);
return;
- else
- if not Has_Discriminants (Typ) then
- Error_Msg_N
- ("Unchecked_Union must have one discriminant", Typ);
- return;
- end if;
+ -- Note: in previous versions of GNAT we used to check for limited
+ -- types and give an error, but in fact the standard does allow
+ -- Unchecked_Union on limited types, so this check was removed.
+ -- Proceed with basic error checks completed
+
+ else
Discr := First_Discriminant (Typ);
while Present (Discr) loop
if No (Discriminant_Default_Value (Discr)) then
end;
elsif Nkind (A) = N_Identifier then
-
if Chars (A) = Name_All_Checks then
Set_Validity_Check_Options ("a");
-
elsif Chars (A) = Name_On then
Validity_Checks_On := True;
-
elsif Chars (A) = Name_Off then
Validity_Checks_On := False;
-
end if;
end if;
end Validity_Checks;
-- actual is a conversion. Retrieve the real entity name.
if (In_Instance_Body
- or else In_Inlined_Body)
+ or else In_Inlined_Body)
and then Nkind (E_Id) = N_Unchecked_Type_Conversion
then
E_Id := Expression (E_Id);
-- Preanalyze the boolean expressions, we treat these as spec
-- expressions (i.e. similar to a default expression).
- Preanalyze_TC_Args (Get_Requires_From_Test_Case_Pragma (N),
+ Preanalyze_TC_Args (N,
+ Get_Requires_From_Test_Case_Pragma (N),
Get_Ensures_From_Test_Case_Pragma (N));
-- Remove the subprogram from the scope stack now that the pre-analysis
-- 99 special processing required (e.g. for pragma Check)
Sig_Flags : constant array (Pragma_Id) of Int :=
- (Pragma_AST_Entry => -1,
- Pragma_Abort_Defer => -1,
- Pragma_Ada_83 => -1,
- Pragma_Ada_95 => -1,
- Pragma_Ada_05 => -1,
- Pragma_Ada_2005 => -1,
- Pragma_Ada_12 => -1,
- Pragma_Ada_2012 => -1,
- Pragma_All_Calls_Remote => -1,
- Pragma_Annotate => -1,
- Pragma_Assert => -1,
- Pragma_Assertion_Policy => 0,
- Pragma_Assume_No_Invalid_Values => 0,
- Pragma_Asynchronous => -1,
- Pragma_Atomic => 0,
- Pragma_Atomic_Components => 0,
- Pragma_Attach_Handler => -1,
- Pragma_Check => 99,
- Pragma_Check_Name => 0,
- Pragma_Check_Policy => 0,
- Pragma_CIL_Constructor => -1,
- Pragma_CPP_Class => 0,
- Pragma_CPP_Constructor => 0,
- Pragma_CPP_Virtual => 0,
- Pragma_CPP_Vtable => 0,
- Pragma_CPU => -1,
- Pragma_C_Pass_By_Copy => 0,
- Pragma_Comment => 0,
- Pragma_Common_Object => -1,
- Pragma_Compile_Time_Error => -1,
- Pragma_Compile_Time_Warning => -1,
- Pragma_Compiler_Unit => 0,
- Pragma_Complete_Representation => 0,
- Pragma_Complex_Representation => 0,
- Pragma_Component_Alignment => -1,
- Pragma_Controlled => 0,
- Pragma_Convention => 0,
- Pragma_Convention_Identifier => 0,
- Pragma_Debug => -1,
- Pragma_Debug_Policy => 0,
- Pragma_Detect_Blocking => -1,
- Pragma_Default_Storage_Pool => -1,
- Pragma_Dimension => -1,
- Pragma_Discard_Names => 0,
- Pragma_Elaborate => -1,
- Pragma_Elaborate_All => -1,
- Pragma_Elaborate_Body => -1,
- Pragma_Elaboration_Checks => -1,
- Pragma_Eliminate => -1,
- Pragma_Export => -1,
- Pragma_Export_Exception => -1,
- Pragma_Export_Function => -1,
- Pragma_Export_Object => -1,
- Pragma_Export_Procedure => -1,
- Pragma_Export_Value => -1,
- Pragma_Export_Valued_Procedure => -1,
- Pragma_Extend_System => -1,
- Pragma_Extensions_Allowed => -1,
- Pragma_External => -1,
- Pragma_Favor_Top_Level => -1,
- Pragma_External_Name_Casing => -1,
- Pragma_Fast_Math => -1,
- Pragma_Finalize_Storage_Only => 0,
- Pragma_Float_Representation => 0,
- Pragma_Ident => -1,
- Pragma_Implemented => -1,
- Pragma_Implicit_Packing => 0,
- Pragma_Import => +2,
- Pragma_Import_Exception => 0,
- Pragma_Import_Function => 0,
- Pragma_Import_Object => 0,
- Pragma_Import_Procedure => 0,
- Pragma_Import_Valued_Procedure => 0,
- Pragma_Independent => 0,
- Pragma_Independent_Components => 0,
- Pragma_Initialize_Scalars => -1,
- Pragma_Inline => 0,
- Pragma_Inline_Always => 0,
- Pragma_Inline_Generic => 0,
- Pragma_Inspection_Point => -1,
- Pragma_Interface => +2,
- Pragma_Interface_Name => +2,
- Pragma_Interrupt_Handler => -1,
- Pragma_Interrupt_Priority => -1,
- Pragma_Interrupt_State => -1,
- Pragma_Invariant => -1,
- Pragma_Java_Constructor => -1,
- Pragma_Java_Interface => -1,
- Pragma_Keep_Names => 0,
- Pragma_License => -1,
- Pragma_Link_With => -1,
- Pragma_Linker_Alias => -1,
- Pragma_Linker_Constructor => -1,
- Pragma_Linker_Destructor => -1,
- Pragma_Linker_Options => -1,
- Pragma_Linker_Section => -1,
- Pragma_List => -1,
- Pragma_Locking_Policy => -1,
- Pragma_Long_Float => -1,
- Pragma_Machine_Attribute => -1,
- Pragma_Main => -1,
- Pragma_Main_Storage => -1,
- Pragma_Memory_Size => -1,
- Pragma_No_Return => 0,
- Pragma_No_Body => 0,
- Pragma_No_Run_Time => -1,
- Pragma_No_Strict_Aliasing => -1,
- Pragma_Normalize_Scalars => -1,
- Pragma_Obsolescent => 0,
- Pragma_Optimize => -1,
- Pragma_Optimize_Alignment => -1,
- Pragma_Ordered => 0,
- Pragma_Pack => 0,
- Pragma_Page => -1,
- Pragma_Passive => -1,
- Pragma_Preelaborable_Initialization => -1,
- Pragma_Polling => -1,
- Pragma_Persistent_BSS => 0,
- Pragma_Postcondition => -1,
- Pragma_Precondition => -1,
- Pragma_Predicate => -1,
- Pragma_Preelaborate => -1,
- Pragma_Preelaborate_05 => -1,
- Pragma_Priority => -1,
- Pragma_Priority_Specific_Dispatching => -1,
- Pragma_Profile => 0,
- Pragma_Profile_Warnings => 0,
- Pragma_Propagate_Exceptions => -1,
- Pragma_Psect_Object => -1,
- Pragma_Pure => -1,
- Pragma_Pure_05 => -1,
- Pragma_Pure_Function => -1,
- Pragma_Queuing_Policy => -1,
- Pragma_Ravenscar => -1,
- Pragma_Relative_Deadline => -1,
- Pragma_Remote_Call_Interface => -1,
- Pragma_Remote_Types => -1,
- Pragma_Restricted_Run_Time => -1,
- Pragma_Restriction_Warnings => -1,
- Pragma_Restrictions => -1,
- Pragma_Reviewable => -1,
- Pragma_Short_Circuit_And_Or => -1,
- Pragma_Share_Generic => -1,
- Pragma_Shared => -1,
- Pragma_Shared_Passive => -1,
- Pragma_Short_Descriptors => 0,
- Pragma_Source_File_Name => -1,
- Pragma_Source_File_Name_Project => -1,
- Pragma_Source_Reference => -1,
- Pragma_Storage_Size => -1,
- Pragma_Storage_Unit => -1,
- Pragma_Static_Elaboration_Desired => -1,
- Pragma_Stream_Convert => -1,
- Pragma_Style_Checks => -1,
- Pragma_Subtitle => -1,
- Pragma_Suppress => 0,
- Pragma_Suppress_Exception_Locations => 0,
- Pragma_Suppress_All => -1,
- Pragma_Suppress_Debug_Info => 0,
- Pragma_Suppress_Initialization => 0,
- Pragma_System_Name => -1,
- Pragma_Task_Dispatching_Policy => -1,
- Pragma_Task_Info => -1,
- Pragma_Task_Name => -1,
- Pragma_Task_Storage => 0,
- Pragma_Test_Case => -1,
- Pragma_Thread_Local_Storage => 0,
- Pragma_Time_Slice => -1,
- Pragma_Title => -1,
- Pragma_Unchecked_Union => 0,
- Pragma_Unimplemented_Unit => -1,
- Pragma_Universal_Aliasing => -1,
- Pragma_Universal_Data => -1,
- Pragma_Unmodified => -1,
- Pragma_Unreferenced => -1,
- Pragma_Unreferenced_Objects => -1,
- Pragma_Unreserve_All_Interrupts => -1,
- Pragma_Unsuppress => 0,
- Pragma_Use_VADS_Size => -1,
- Pragma_Validity_Checks => -1,
- Pragma_Volatile => 0,
- Pragma_Volatile_Components => 0,
- Pragma_Warnings => -1,
- Pragma_Weak_External => -1,
- Pragma_Wide_Character_Encoding => 0,
- Unknown_Pragma => 0);
+ (Pragma_AST_Entry => -1,
+ Pragma_Abort_Defer => -1,
+ Pragma_Ada_83 => -1,
+ Pragma_Ada_95 => -1,
+ Pragma_Ada_05 => -1,
+ Pragma_Ada_2005 => -1,
+ Pragma_Ada_12 => -1,
+ Pragma_Ada_2012 => -1,
+ Pragma_All_Calls_Remote => -1,
+ Pragma_Annotate => -1,
+ Pragma_Assert => -1,
+ Pragma_Assertion_Policy => 0,
+ Pragma_Assume_No_Invalid_Values => 0,
+ Pragma_Asynchronous => -1,
+ Pragma_Atomic => 0,
+ Pragma_Atomic_Components => 0,
+ Pragma_Attach_Handler => -1,
+ Pragma_Check => 99,
+ Pragma_Check_Name => 0,
+ Pragma_Check_Policy => 0,
+ Pragma_CIL_Constructor => -1,
+ Pragma_CPP_Class => 0,
+ Pragma_CPP_Constructor => 0,
+ Pragma_CPP_Virtual => 0,
+ Pragma_CPP_Vtable => 0,
+ Pragma_CPU => -1,
+ Pragma_C_Pass_By_Copy => 0,
+ Pragma_Comment => 0,
+ Pragma_Common_Object => -1,
+ Pragma_Compile_Time_Error => -1,
+ Pragma_Compile_Time_Warning => -1,
+ Pragma_Compiler_Unit => 0,
+ Pragma_Complete_Representation => 0,
+ Pragma_Complex_Representation => 0,
+ Pragma_Component_Alignment => -1,
+ Pragma_Controlled => 0,
+ Pragma_Convention => 0,
+ Pragma_Convention_Identifier => 0,
+ Pragma_Debug => -1,
+ Pragma_Debug_Policy => 0,
+ Pragma_Detect_Blocking => -1,
+ Pragma_Default_Storage_Pool => -1,
+ Pragma_Dimension => -1,
+ Pragma_Disable_Atomic_Synchronization => -1,
+ Pragma_Discard_Names => 0,
+ Pragma_Dispatching_Domain => -1,
+ Pragma_Elaborate => -1,
+ Pragma_Elaborate_All => -1,
+ Pragma_Elaborate_Body => -1,
+ Pragma_Elaboration_Checks => -1,
+ Pragma_Eliminate => -1,
+ Pragma_Enable_Atomic_Synchronization => -1,
+ Pragma_Export => -1,
+ Pragma_Export_Exception => -1,
+ Pragma_Export_Function => -1,
+ Pragma_Export_Object => -1,
+ Pragma_Export_Procedure => -1,
+ Pragma_Export_Value => -1,
+ Pragma_Export_Valued_Procedure => -1,
+ Pragma_Extend_System => -1,
+ Pragma_Extensions_Allowed => -1,
+ Pragma_External => -1,
+ Pragma_Favor_Top_Level => -1,
+ Pragma_External_Name_Casing => -1,
+ Pragma_Fast_Math => -1,
+ Pragma_Finalize_Storage_Only => 0,
+ Pragma_Float_Representation => 0,
+ Pragma_Ident => -1,
+ Pragma_Implementation_Defined => -1,
+ Pragma_Implemented => -1,
+ Pragma_Implicit_Packing => 0,
+ Pragma_Import => +2,
+ Pragma_Import_Exception => 0,
+ Pragma_Import_Function => 0,
+ Pragma_Import_Object => 0,
+ Pragma_Import_Procedure => 0,
+ Pragma_Import_Valued_Procedure => 0,
+ Pragma_Independent => 0,
+ Pragma_Independent_Components => 0,
+ Pragma_Initialize_Scalars => -1,
+ Pragma_Inline => 0,
+ Pragma_Inline_Always => 0,
+ Pragma_Inline_Generic => 0,
+ Pragma_Inspection_Point => -1,
+ Pragma_Interface => +2,
+ Pragma_Interface_Name => +2,
+ Pragma_Interrupt_Handler => -1,
+ Pragma_Interrupt_Priority => -1,
+ Pragma_Interrupt_State => -1,
+ Pragma_Invariant => -1,
+ Pragma_Java_Constructor => -1,
+ Pragma_Java_Interface => -1,
+ Pragma_Keep_Names => 0,
+ Pragma_License => -1,
+ Pragma_Link_With => -1,
+ Pragma_Linker_Alias => -1,
+ Pragma_Linker_Constructor => -1,
+ Pragma_Linker_Destructor => -1,
+ Pragma_Linker_Options => -1,
+ Pragma_Linker_Section => -1,
+ Pragma_List => -1,
+ Pragma_Locking_Policy => -1,
+ Pragma_Long_Float => -1,
+ Pragma_Machine_Attribute => -1,
+ Pragma_Main => -1,
+ Pragma_Main_Storage => -1,
+ Pragma_Memory_Size => -1,
+ Pragma_No_Return => 0,
+ Pragma_No_Body => 0,
+ Pragma_No_Run_Time => -1,
+ Pragma_No_Strict_Aliasing => -1,
+ Pragma_Normalize_Scalars => -1,
+ Pragma_Obsolescent => 0,
+ Pragma_Optimize => -1,
+ Pragma_Optimize_Alignment => -1,
+ Pragma_Ordered => 0,
+ Pragma_Pack => 0,
+ Pragma_Page => -1,
+ Pragma_Passive => -1,
+ Pragma_Preelaborable_Initialization => -1,
+ Pragma_Polling => -1,
+ Pragma_Persistent_BSS => 0,
+ Pragma_Postcondition => -1,
+ Pragma_Precondition => -1,
+ Pragma_Predicate => -1,
+ Pragma_Preelaborate => -1,
+ Pragma_Preelaborate_05 => -1,
+ Pragma_Priority => -1,
+ Pragma_Priority_Specific_Dispatching => -1,
+ Pragma_Profile => 0,
+ Pragma_Profile_Warnings => 0,
+ Pragma_Propagate_Exceptions => -1,
+ Pragma_Psect_Object => -1,
+ Pragma_Pure => -1,
+ Pragma_Pure_05 => -1,
+ Pragma_Pure_12 => -1,
+ Pragma_Pure_Function => -1,
+ Pragma_Queuing_Policy => -1,
+ Pragma_Ravenscar => -1,
+ Pragma_Relative_Deadline => -1,
+ Pragma_Remote_Call_Interface => -1,
+ Pragma_Remote_Types => -1,
+ Pragma_Restricted_Run_Time => -1,
+ Pragma_Restriction_Warnings => -1,
+ Pragma_Restrictions => -1,
+ Pragma_Reviewable => -1,
+ Pragma_Short_Circuit_And_Or => -1,
+ Pragma_Share_Generic => -1,
+ Pragma_Shared => -1,
+ Pragma_Shared_Passive => -1,
+ Pragma_Short_Descriptors => 0,
+ Pragma_Source_File_Name => -1,
+ Pragma_Source_File_Name_Project => -1,
+ Pragma_Source_Reference => -1,
+ Pragma_Storage_Size => -1,
+ Pragma_Storage_Unit => -1,
+ Pragma_Static_Elaboration_Desired => -1,
+ Pragma_Stream_Convert => -1,
+ Pragma_Style_Checks => -1,
+ Pragma_Subtitle => -1,
+ Pragma_Suppress => 0,
+ Pragma_Suppress_Exception_Locations => 0,
+ Pragma_Suppress_All => -1,
+ Pragma_Suppress_Debug_Info => 0,
+ Pragma_Suppress_Initialization => 0,
+ Pragma_System_Name => -1,
+ Pragma_Task_Dispatching_Policy => -1,
+ Pragma_Task_Info => -1,
+ Pragma_Task_Name => -1,
+ Pragma_Task_Storage => 0,
+ Pragma_Test_Case => -1,
+ Pragma_Thread_Local_Storage => 0,
+ Pragma_Time_Slice => -1,
+ Pragma_Title => -1,
+ Pragma_Unchecked_Union => 0,
+ Pragma_Unimplemented_Unit => -1,
+ Pragma_Universal_Aliasing => -1,
+ Pragma_Universal_Data => -1,
+ Pragma_Unmodified => -1,
+ Pragma_Unreferenced => -1,
+ Pragma_Unreferenced_Objects => -1,
+ Pragma_Unreserve_All_Interrupts => -1,
+ Pragma_Unsuppress => 0,
+ Pragma_Use_VADS_Size => -1,
+ Pragma_Validity_Checks => -1,
+ Pragma_Volatile => 0,
+ Pragma_Volatile_Components => 0,
+ Pragma_Warnings => -1,
+ Pragma_Weak_External => -1,
+ Pragma_Wide_Character_Encoding => 0,
+ Unknown_Pragma => 0);
function Is_Non_Significant_Pragma_Reference (N : Node_Id) return Boolean is
Id : Pragma_Id;
-- Preanalyze_TC_Args --
------------------------
- procedure Preanalyze_TC_Args (Arg_Req, Arg_Ens : Node_Id) is
+ procedure Preanalyze_TC_Args (N, Arg_Req, Arg_Ens : Node_Id) is
begin
-- Preanalyze the boolean expressions, we treat these as spec
-- expressions (i.e. similar to a default expression).
if Present (Arg_Req) then
Preanalyze_Spec_Expression
(Get_Pragma_Arg (Arg_Req), Standard_Boolean);
+
+ -- In ASIS mode, for a pragma generated from a source aspect, also
+ -- analyze the original aspect expression.
+
+ if ASIS_Mode
+ and then Present (Corresponding_Aspect (N))
+ then
+ Preanalyze_Spec_Expression
+ (Original_Node (Get_Pragma_Arg (Arg_Req)), Standard_Boolean);
+ end if;
end if;
if Present (Arg_Ens) then
Preanalyze_Spec_Expression
(Get_Pragma_Arg (Arg_Ens), Standard_Boolean);
+
+ -- In ASIS mode, for a pragma generated from a source aspect, also
+ -- analyze the original aspect expression.
+
+ if ASIS_Mode
+ and then Present (Corresponding_Aspect (N))
+ then
+ Preanalyze_Spec_Expression
+ (Original_Node (Get_Pragma_Arg (Arg_Ens)), Standard_Boolean);
+ end if;
end if;
end Preanalyze_TC_Args;
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