-- --
-- B o d y --
-- --
--- $Revision$
--- --
--- Copyright (C) 1992-2001, Free Software Foundation, Inc. --
+-- Copyright (C) 1992-2005, 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- --
-- MA 02111-1307, USA. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
--- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
+-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
with Einfo; use Einfo;
with Elists; use Elists;
with Errout; use Errout;
-with Expander; use Expander;
with Exp_Dist; use Exp_Dist;
-with Fname; use Fname;
with Hostparm; use Hostparm;
with Lib; use Lib;
+with Lib.Writ; use Lib.Writ;
+with Lib.Xref; use Lib.Xref;
with Namet; use Namet;
with Nlists; use Nlists;
with Nmake; use Nmake;
with Opt; use Opt;
with Output; use Output;
with Restrict; use Restrict;
+with Rident; use Rident;
with Rtsfind; use Rtsfind;
with Sem; use Sem;
+with Sem_Ch3; use Sem_Ch3;
with Sem_Ch8; use Sem_Ch8;
with Sem_Ch13; use Sem_Ch13;
with Sem_Disp; use Sem_Disp;
+with Sem_Dist; use Sem_Dist;
with Sem_Elim; use Sem_Elim;
with Sem_Eval; use Sem_Eval;
with Sem_Intr; use Sem_Intr;
with Snames; use Snames;
with Stringt; use Stringt;
with Stylesw; use Stylesw;
+with Table;
with Targparm; use Targparm;
with Tbuild; use Tbuild;
with Ttypes;
with Urealp; use Urealp;
with Validsw; use Validsw;
+with GNAT.Spelling_Checker; use GNAT.Spelling_Checker;
+
package body Sem_Prag is
----------------------------------------------
-- design and implementation and are intended to be fully compatible
-- with the use of these pragmas in the DEC Ada compiler.
+ --------------------------------------------
+ -- Checking for Duplicated External Names --
+ --------------------------------------------
+
+ -- It is suspicious if two separate Export pragmas use the same external
+ -- name. The following table is used to diagnose this situation so that
+ -- an appropriate warning can be issued.
+
+ -- The Node_Id stored is for the N_String_Literal node created to
+ -- hold the value of the external name. The Sloc of this node is
+ -- used to cross-reference the location of the duplication.
+
+ package Externals is new Table.Table (
+ Table_Component_Type => Node_Id,
+ Table_Index_Type => Int,
+ Table_Low_Bound => 0,
+ Table_Initial => 100,
+ Table_Increment => 100,
+ Table_Name => "Name_Externals");
+
-------------------------------------
-- Local Subprograms and Variables --
-------------------------------------
-- it is set to Uppercase or Lowercase, then a new string literal with
-- appropriate casing is constructed.
- function Is_Generic_Subprogram (Id : Entity_Id) return Boolean;
- -- Return True if Id is a generic procedure or a function
-
function Get_Base_Subprogram (Def_Id : Entity_Id) return Entity_Id;
-- If Def_Id refers to a renamed subprogram, then the base subprogram
-- (the original one, following the renaming chain) is returned.
-- Elaborate_All pragma. Entity name for unit and its parents is
-- taken from item in previous with_clause that mentions the unit.
- Locking_Policy_Sloc : Source_Ptr := No_Location;
- Queuing_Policy_Sloc : Source_Ptr := No_Location;
- Task_Dispatching_Policy_Sloc : Source_Ptr := No_Location;
- -- These global variables remember the location of a previous locking,
- -- queuing or task dispatching policy pragma, so that appropriate error
- -- messages can be generated for inconsistent pragmas. Note that it is
- -- fine that these are global locations, because the check for consistency
- -- is over the entire program.
-
-------------------------------
-- Adjust_External_Name_Case --
-------------------------------
-- in which case the check is applied to the expression of the
-- association or an expression directly.
+ procedure Check_Arg_Is_External_Name (Arg : Node_Id);
+ -- Check that an argument has the right form for an EXTERNAL_NAME
+ -- parameter of an extended import/export pragma. The rule is that
+ -- the name must be an identifier or string literal (in Ada 83 mode)
+ -- or a static string expression (in Ada 95 mode).
+
procedure Check_Arg_Is_Identifier (Arg : Node_Id);
-- Check the specified argument Arg to make sure that it is an
-- identifier. If not give error and raise Pragma_Exit.
procedure Check_At_Most_N_Arguments (N : Nat);
-- Check there are no more than N arguments present
+ procedure Check_Component (Comp : Node_Id);
+ -- Examine Unchecked_Union component for correct use of per-object
+ -- constrained subtypes.
+
+ procedure Check_Duplicated_Export_Name (Nam : Node_Id);
+ -- Nam is an N_String_Literal node containing the external name set
+ -- by an Import or Export pragma (or extended Import or Export pragma).
+ -- This procedure checks for possible duplications if this is the
+ -- export case, and if found, issues an appropriate error message.
+
procedure Check_First_Subtype (Arg : Node_Id);
-- Checks that Arg, whose expression is an entity name referencing
-- a subtype, does not reference a type that is not a first subtype.
-- If any argument has an identifier, then an error message is issued,
-- and Pragma_Exit is raised.
- procedure Check_Non_Overloaded_Function (Arg : Node_Id);
- -- Check that the given argument is the name of a local function of
- -- one argument that is not overloaded in the current local scope.
-
procedure Check_Optional_Identifier (Arg : Node_Id; Id : Name_Id);
-- Checks if the given argument has an identifier, and if so, requires
-- it to match the given identifier name. If there is a non-matching
-- and to library level instantiations), and they are simply ignored,
-- which is implemented by rewriting them as null statements.
+ procedure Check_Variant (Variant : Node_Id);
+ -- Check Unchecked_Union variant for lack of nested variants and
+ -- presence of at least one component.
+
procedure Error_Pragma (Msg : String);
pragma No_Return (Error_Pragma);
-- Outputs error message for current pragma. The message contains an %
function Is_Before_First_Decl
(Pragma_Node : Node_Id;
- Decls : List_Id)
- return Boolean;
+ Decls : List_Id) return Boolean;
-- Return True if Pragma_Node is before the first declarative item in
-- Decls where Decls is the list of declarative items.
-- is set to the default from the subprogram name.
procedure Process_Interrupt_Or_Attach_Handler;
- -- Attach the pragmas to the rep item chain.
+ -- Common processing for Interrupt and Attach_Handler pragmas
+
+ procedure Process_Restrictions_Or_Restriction_Warnings;
+ -- Common processing for Restrictions and Restriction_Warnings pragmas
procedure Process_Suppress_Unsuppress (Suppress_Case : Boolean);
-- Common processing for Suppress and Unsuppress. The boolean parameter
procedure Set_Exported (E : Entity_Id; Arg : Node_Id);
-- This procedure sets the Is_Exported flag for the given entity,
-- checking that the entity was not previously imported. Arg is
- -- the argument that specified the entity.
+ -- the argument that specified the entity. A check is also made
+ -- for exporting inappropriate entities.
procedure Set_Extended_Import_Export_External_Name
(Internal_Ent : Entity_Id;
-- argument has the right form then the Mechanism field of Ent is
-- set appropriately.
+ procedure Set_Ravenscar_Profile (N : Node_Id);
+ -- Activate the set of configuration pragmas and restrictions that
+ -- make up the Ravenscar Profile. N is the corresponding pragma
+ -- node, which is used for error messages on any constructs
+ -- that violate the profile.
+
--------------------------
-- Check_Ada_83_Warning --
--------------------------
procedure Check_Ada_83_Warning is
begin
- GNAT_Pragma;
-
- if Ada_83 and then Comes_From_Source (N) then
+ if Ada_Version = Ada_83 and then Comes_From_Source (N) then
Error_Msg_N ("(Ada 83) pragma& is non-standard?", N);
end if;
end Check_Ada_83_Warning;
end if;
end Check_Arg_Count;
+ --------------------------------
+ -- Check_Arg_Is_External_Name --
+ --------------------------------
+
+ procedure Check_Arg_Is_External_Name (Arg : Node_Id) is
+ Argx : constant Node_Id := Get_Pragma_Arg (Arg);
+
+ begin
+ if Nkind (Argx) = N_Identifier then
+ return;
+
+ else
+ Analyze_And_Resolve (Argx, Standard_String);
+
+ 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 expected Ada 83 mode
+ -- use of external names which are string literals, even though
+ -- technically these are not static in Ada 83.
+
+ 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;
+
+ -- Here we have a real error (non-static expression)
+
+ else
+ Error_Msg_Name_1 := Chars (N);
+ Flag_Non_Static_Expr
+ ("argument for pragma% must be a identifier or " &
+ "static string expression!", Argx);
+ raise Pragma_Exit;
+ end if;
+ end if;
+ end Check_Arg_Is_External_Name;
+
-----------------------------
-- Check_Arg_Is_Identifier --
-----------------------------
procedure Check_Arg_Is_Identifier (Arg : Node_Id) is
Argx : constant Node_Id := Get_Pragma_Arg (Arg);
-
begin
if Nkind (Argx) /= N_Identifier then
Error_Pragma_Arg
procedure Check_Arg_Is_Integer_Literal (Arg : Node_Id) is
Argx : constant Node_Id := Get_Pragma_Arg (Arg);
-
begin
if Nkind (Argx) /= N_Integer_Literal then
Error_Pragma_Arg
-- pragmas like Import in Ada 83 mode. They will of course be
-- flagged with warnings as usual, but will not cause errors.
- elsif Ada_83 and then Nkind (Argx) = N_String_Literal then
+ elsif Ada_Version = Ada_83
+ and then Nkind (Argx) = N_String_Literal
+ then
return;
-- Static expression that raises Constraint_Error. This has
-- Finally, we have a real error
else
- Error_Pragma_Arg
- ("argument for pragma% must be a static expression", Argx);
+ Error_Msg_Name_1 := Chars (N);
+ Flag_Non_Static_Expr
+ ("argument for pragma% must be a static expression!", Argx);
+ raise Pragma_Exit;
end if;
-
end Check_Arg_Is_Static_Expression;
---------------------------------
procedure Check_Arg_Is_String_Literal (Arg : Node_Id) is
Argx : constant Node_Id := Get_Pragma_Arg (Arg);
-
begin
if Nkind (Argx) /= N_String_Literal then
Error_Pragma_Arg
("argument for pragma% must be string literal", Argx);
end if;
-
end Check_Arg_Is_String_Literal;
------------------------------------------
procedure Check_At_Most_N_Arguments (N : Nat) is
Arg : Node_Id;
-
begin
if Arg_Count > N then
Arg := Arg1;
-
for J in 1 .. N loop
Next (Arg);
Error_Pragma_Arg ("too many arguments for pragma%", Arg);
end if;
end Check_At_Most_N_Arguments;
+ ---------------------
+ -- Check_Component --
+ ---------------------
+
+ procedure Check_Component (Comp : Node_Id) is
+ begin
+ if Nkind (Comp) = N_Component_Declaration then
+ declare
+ Sindic : constant Node_Id :=
+ Subtype_Indication (Component_Definition (Comp));
+
+ begin
+ if Nkind (Sindic) = N_Subtype_Indication then
+
+ -- Ada 2005 (AI-216): If a component subtype is subject to
+ -- a per-object constraint, then the component type shall
+ -- be an Unchecked_Union.
+
+ if Has_Per_Object_Constraint (Defining_Identifier (Comp))
+ and then
+ not Is_Unchecked_Union (Etype (Subtype_Mark (Sindic)))
+ then
+ Error_Msg_N ("component subtype subject to per-object" &
+ " constraint must be an Unchecked_Union", Comp);
+ end if;
+ end if;
+ end;
+ end if;
+ end Check_Component;
+
+ ----------------------------------
+ -- Check_Duplicated_Export_Name --
+ ----------------------------------
+
+ procedure Check_Duplicated_Export_Name (Nam : Node_Id) is
+ String_Val : constant String_Id := Strval (Nam);
+
+ begin
+ -- We are only interested in the export case, and in the case of
+ -- generics, it is the instance, not the template, that is the
+ -- problem (the template will generate a warning in any case).
+
+ if not Inside_A_Generic
+ and then (Prag_Id = Pragma_Export
+ or else
+ Prag_Id = Pragma_Export_Procedure
+ or else
+ Prag_Id = Pragma_Export_Valued_Procedure
+ or else
+ Prag_Id = Pragma_Export_Function)
+ then
+ for J in Externals.First .. Externals.Last loop
+ if String_Equal (String_Val, Strval (Externals.Table (J))) then
+ Error_Msg_Sloc := Sloc (Externals.Table (J));
+ Error_Msg_N ("external name duplicates name given#", Nam);
+ exit;
+ end if;
+ end loop;
+
+ Externals.Append (Nam);
+ end if;
+ end Check_Duplicated_Export_Name;
+
-------------------------
-- Check_First_Subtype --
-------------------------
procedure Check_First_Subtype (Arg : Node_Id) is
Argx : constant Node_Id := Get_Pragma_Arg (Arg);
-
begin
if not Is_First_Subtype (Entity (Argx)) then
Error_Pragma_Arg
-- Otherwise warn if obviously not main program
elsif Present (Parameter_Specifications (Specification (P)))
- or else not Is_Library_Level_Entity (Defining_Entity (P))
+ or else not Is_Compilation_Unit (Defining_Entity (P))
then
Error_Msg_Name_1 := Chars (N);
Error_Msg_N
("argument of pragma% must be entity name", Arg1);
elsif Prag_Id = Pragma_Interrupt_Handler then
- Check_Restriction (No_Dynamic_Interrupts, N);
+ Check_Restriction (No_Dynamic_Attachment, N);
end if;
declare
- Prot_Proc : Entity_Id := Empty;
- Prot_Type : Entity_Id;
- Found : Boolean := False;
+ Handler_Proc : Entity_Id := Empty;
+ Proc_Scope : Entity_Id;
+ Found : Boolean := False;
begin
if not Is_Overloaded (Arg1_X) then
- Prot_Proc := Entity (Arg1_X);
+ Handler_Proc := Entity (Arg1_X);
else
declare
begin
Get_First_Interp (Arg1_X, Index, It);
while Present (It.Nam) loop
- Prot_Proc := It.Nam;
+ Handler_Proc := It.Nam;
- if Ekind (Prot_Proc) = E_Procedure
- and then No (First_Formal (Prot_Proc))
+ if Ekind (Handler_Proc) = E_Procedure
+ and then No (First_Formal (Handler_Proc))
then
if not Found then
Found := True;
- Set_Entity (Arg1_X, Prot_Proc);
+ Set_Entity (Arg1_X, Handler_Proc);
Set_Is_Overloaded (Arg1_X, False);
else
Error_Pragma_Arg
("argument of pragma% must be parameterless procedure",
Arg1);
else
- Prot_Proc := Entity (Arg1_X);
+ Handler_Proc := Entity (Arg1_X);
end if;
end;
end if;
- Prot_Type := Scope (Prot_Proc);
+ Proc_Scope := Scope (Handler_Proc);
+
+ -- On AAMP only, a pragma Interrupt_Handler is supported for
+ -- nonprotected parameterless procedures.
+
+ if AAMP_On_Target
+ and then Prag_Id = Pragma_Interrupt_Handler
+ then
+ if Ekind (Handler_Proc) /= E_Procedure then
+ Error_Pragma_Arg
+ ("argument of pragma% must be a procedure", Arg1);
+ end if;
- if Ekind (Prot_Proc) /= E_Procedure
- or else Ekind (Prot_Type) /= E_Protected_Type
+ elsif Ekind (Handler_Proc) /= E_Procedure
+ or else Ekind (Proc_Scope) /= E_Protected_Type
then
Error_Pragma_Arg
- ("argument of pragma% must be protected procedure",
- Arg1);
+ ("argument of pragma% must be protected procedure", Arg1);
end if;
- if not Is_Library_Level_Entity (Prot_Type) then
+ if (not AAMP_On_Target or else Prag_Id = Pragma_Attach_Handler)
+ and then Ekind (Proc_Scope) = E_Protected_Type
+ then
+ if Parent (N) /=
+ Protected_Definition (Parent (Proc_Scope))
+ then
+ Error_Pragma ("pragma% must be in protected definition");
+ end if;
+ end if;
+
+ if not Is_Library_Level_Entity (Proc_Scope)
+ or else (AAMP_On_Target
+ and then not Is_Library_Level_Entity (Handler_Proc))
+ then
Error_Pragma_Arg
- ("pragma% requires library level entity", Arg1);
+ ("pragma% requires library-level entity", Arg1);
end if;
- if Present (First_Formal (Prot_Proc)) then
+ if Present (First_Formal (Handler_Proc)) then
Error_Pragma_Arg
("argument of pragma% must be parameterless procedure",
Arg1);
end if;
-
- if Parent (N) /=
- Protected_Definition (Parent (Prot_Type))
- then
- Error_Pragma ("pragma% must be in protected definition");
- end if;
-
end;
end Check_Interrupt_Or_Attach_Handler;
end loop;
Error_Pragma ("pragma% is not in declarative part or package spec");
-
end Check_Is_In_Decl_Part_Or_Package_Spec;
-------------------------
procedure Check_No_Identifiers is
Arg_Node : Node_Id;
-
begin
if Arg_Count > 0 then
Arg_Node := Arg1;
-
while Present (Arg_Node) loop
Check_No_Identifier (Arg_Node);
Next (Arg_Node);
end if;
end Check_No_Identifiers;
- -----------------------------------
- -- Check_Non_Overloaded_Function --
- -----------------------------------
-
- procedure Check_Non_Overloaded_Function (Arg : Node_Id) is
- Ent : Entity_Id;
-
- begin
- Check_Arg_Is_Local_Name (Arg);
- Ent := Entity (Expression (Arg));
-
- if Present (Homonym (Ent))
- and then Scope (Homonym (Ent)) = Current_Scope
- then
- Error_Pragma_Arg
- ("argument for pragma% may not be overloaded", Arg);
- end if;
-
- if Ekind (Ent) /= E_Function
- or else No (First_Formal (Ent))
- or else Present (Next_Formal (First_Formal (Ent)))
- then
- Error_Pragma_Arg
- ("argument for pragma% must be function of one argument", Arg);
- end if;
- end Check_Non_Overloaded_Function;
-
-------------------------------
-- Check_Optional_Identifier --
-------------------------------
-- Note: for convenience in writing this procedure, in addition to
-- the officially (i.e. by spec) allowed argument which is always
-- a constraint, it also allows ranges and discriminant associations.
+ -- Above is not clear ???
procedure Check_Static_Constraint (Constr : Node_Id) is
procedure Require_Static (E : Node_Id) is
begin
if not Is_OK_Static_Expression (E) then
- Error_Msg_N
- ("non-static constraint not allowed in Unchecked_Union", E);
+ Flag_Non_Static_Expr
+ ("non-static constraint not allowed in Unchecked_Union!", E);
raise Pragma_Exit;
end if;
end Require_Static;
when N_Index_Or_Discriminant_Constraint =>
declare
- IDC : Entity_Id := First (Constraints (Constr));
-
+ IDC : Entity_Id;
begin
+ IDC := First (Constraints (Constr));
while Present (IDC) loop
Check_Static_Constraint (IDC);
Next (IDC);
Plist : List_Id;
Parent_Node : Node_Id;
Unit_Name : Entity_Id;
- Valid : Boolean := True;
Unit_Kind : Node_Kind;
Unit_Node : Node_Id;
Sindex : Source_File_Index;
begin
if not Is_List_Member (N) then
Pragma_Misplaced;
- Valid := False;
else
Plist := List_Containing (N);
end if;
end if;
end if;
-
end Check_Valid_Library_Unit_Pragma;
+ -------------------
+ -- Check_Variant --
+ -------------------
+
+ procedure Check_Variant (Variant : Node_Id) is
+ Clist : constant Node_Id := Component_List (Variant);
+ Comp : Node_Id;
+
+ begin
+ if Present (Variant_Part (Clist)) then
+ Error_Msg_N
+ ("Unchecked_Union may not have nested variants",
+ Variant_Part (Clist));
+ end if;
+
+ if not Is_Non_Empty_List (Component_Items (Clist)) then
+ Error_Msg_N
+ ("Unchecked_Union may not have empty component list",
+ Variant);
+ return;
+ end if;
+
+ Comp := First (Component_Items (Clist));
+ while Present (Comp) loop
+ Check_Component (Comp);
+ Next (Comp);
+ end loop;
+ end Check_Variant;
+
------------------
-- Error_Pragma --
------------------
and then Defining_Entity (Parent (N)) /= Current_Scope
then
return Defining_Entity (Parent (N));
-
else
return Current_Scope;
end if;
-- Otherwise first deal with any positional parameters present
Arg := First (Pragma_Argument_Associations (N));
-
for Index in Args'Range loop
exit when No (Arg) or else Chars (Arg) /= No_Name;
Args (Index) := Expression (Arg);
end if;
if Index = Names'Last then
- Error_Pragma_Arg_Ident
- ("pragma% does not allow & argument", Arg);
+ Error_Msg_Name_1 := Chars (N);
+ Error_Msg_N ("pragma% does not allow & argument", Arg);
+
+ -- Check for possible misspelling
+
+ for Index1 in Names'Range loop
+ if Is_Bad_Spelling_Of
+ (Get_Name_String (Chars (Arg)),
+ Get_Name_String (Names (Index1)))
+ then
+ Error_Msg_Name_1 := Names (Index1);
+ Error_Msg_N ("\possible misspelling of%", Arg);
+ exit;
+ end if;
+ end loop;
+
+ raise Pragma_Exit;
end if;
end loop;
end if;
function Is_Before_First_Decl
(Pragma_Node : Node_Id;
- Decls : List_Id)
- return Boolean
+ Decls : List_Id) return Boolean
is
Item : Node_Id := First (Decls);
Next (Item);
end loop;
-
end Is_Before_First_Decl;
-----------------------------
else
return False;
end if;
-
end Is_Configuration_Pragma;
----------------------
E : Entity_Id;
D : Node_Id;
K : Node_Kind;
+ Utyp : Entity_Id;
+
+ procedure Set_Atomic (E : Entity_Id);
+ -- Set given type as atomic, and if no explicit alignment was
+ -- given, set alignment to unknown, since back end knows what
+ -- the alignment requirements are for atomic arrays. Note that
+ -- this step is necessary for derived types.
+
+ ----------------
+ -- Set_Atomic --
+ ----------------
+
+ procedure Set_Atomic (E : Entity_Id) is
+ begin
+ Set_Is_Atomic (E);
+
+ if not Has_Alignment_Clause (E) then
+ Set_Alignment (E, Uint_0);
+ end if;
+ end Set_Atomic;
+
+ -- Start of processing for Process_Atomic_Shared_Volatile
begin
- GNAT_Pragma;
Check_Ada_83_Warning;
Check_No_Identifiers;
Check_Arg_Count (1);
end if;
if Prag_Id /= Pragma_Volatile then
- Set_Is_Atomic (E);
- Set_Is_Atomic (Underlying_Type (E));
+ Set_Atomic (E);
+ Set_Atomic (Underlying_Type (E));
+ Set_Atomic (Base_Type (E));
end if;
- Set_Is_Volatile (E);
+ -- Attribute belongs on the base type. If the
+ -- view of the type is currently private, it also
+ -- belongs on the underlying type.
+
+ Set_Is_Volatile (Base_Type (E));
Set_Is_Volatile (Underlying_Type (E));
+ Set_Treat_As_Volatile (E);
+ Set_Treat_As_Volatile (Underlying_Type (E));
+
elsif K = N_Object_Declaration
or else (K = N_Component_Declaration
and then Original_Record_Component (E) = E)
if Prag_Id /= Pragma_Volatile then
Set_Is_Atomic (E);
+
+ -- If the object declaration has an explicit
+ -- initialization, a temporary may have to be
+ -- created to hold the expression, to insure
+ -- that access to the object remain atomic.
+
+ if Nkind (Parent (E)) = N_Object_Declaration
+ and then Present (Expression (Parent (E)))
+ then
+ Set_Has_Delayed_Freeze (E);
+ end if;
+
+ -- An interesting improvement here. If an object of type X
+ -- is declared atomic, and the type X is not atomic, that's
+ -- a pity, since it may not have appropraite alignment etc.
+ -- We can rescue this in the special case where the object
+ -- and type are in the same unit by just setting the type
+ -- as atomic, so that the back end will process it as atomic.
+
+ Utyp := Underlying_Type (Etype (E));
+
+ if Present (Utyp)
+ and then Sloc (E) > No_Location
+ and then Sloc (Utyp) > No_Location
+ and then
+ Get_Source_File_Index (Sloc (E)) =
+ Get_Source_File_Index (Sloc (Underlying_Type (Etype (E))))
+ then
+ Set_Is_Atomic (Underlying_Type (Etype (E)));
+ end if;
end if;
Set_Is_Volatile (E);
+ Set_Treat_As_Volatile (E);
else
Error_Pragma_Arg
is
Id : Node_Id;
E1 : Entity_Id;
- Comp_Unit : Unit_Number_Type;
Cname : Name_Id;
+ Comp_Unit : Unit_Number_Type;
procedure Set_Convention_From_Pragma (E : Entity_Id);
-- Set convention in entity E, and also flag that the entity has a
-- with a warning in the non-VMS case.
else
- if not OpenVMS_On_Target then
+ if Warn_On_Export_Import and not OpenVMS_On_Target then
Error_Msg_N
("?unrecognized convention name, C assumed",
Expression (Arg1));
-- Go to renamed subprogram if present, since convention applies
-- to the actual renamed entity, not to the renaming entity.
+ -- If subprogram is inherited, go to parent subprogram.
if Is_Subprogram (E)
and then Present (Alias (E))
- and then Nkind (Parent (Declaration_Node (E))) =
- N_Subprogram_Renaming_Declaration
then
- E := Alias (E);
+ if Nkind (Parent (Declaration_Node (E)))
+ = N_Subprogram_Renaming_Declaration
+ then
+ E := Alias (E);
+
+ elsif Nkind (Parent (E)) = N_Full_Type_Declaration
+ and then Scope (E) = Scope (Alias (E))
+ then
+ E := Alias (E);
+ end if;
end if;
- -- Check that we not applying this to a specless body
+ -- Check that we are not applying this to a specless body
if Is_Subprogram (E)
and then Nkind (Parent (Declaration_Node (E))) = N_Subprogram_Body
end if;
-- For the subprogram case, set proper convention for all homonyms
- -- in same compilation unit.
- -- Is the test of compilation unit really necessary ???
- -- What about subprogram renamings here???
+ -- in same scope and the same declarative part, i.e. the same
+ -- compilation unit.
else
Comp_Unit := Get_Source_Unit (E);
Set_Convention_From_Pragma (E);
+ -- Treat a pragma Import as an implicit body, for GPS use.
+
+ if Prag_Id = Pragma_Import then
+ Generate_Reference (E, Id, 'b');
+ end if;
+
E1 := E;
loop
E1 := Homonym (E1);
-- That is deliberate, we cannot chain the rep item on more
-- than one Rep_Item chain, to be fixed later ???
- if Comp_Unit = Get_Source_Unit (E1) then
+ if Comes_From_Source (E1)
+ and then Comp_Unit = Get_Source_Unit (E1)
+ and then Nkind (Original_Node (Parent (E1))) /=
+ N_Full_Type_Declaration
+ then
Set_Convention_From_Pragma (E1);
+
+ if Prag_Id = Pragma_Import then
+ Generate_Reference (E, Id, 'b');
+ end if;
end if;
end loop;
end if;
-
end Process_Convention;
-----------------------------------------------------
Code_Val : Uint;
begin
+ GNAT_Pragma;
+
+ if not OpenVMS_On_Target then
+ Error_Pragma
+ ("?pragma% ignored (applies only to Open'V'M'S)");
+ end if;
+
Process_Extended_Import_Export_Internal_Arg (Arg_Internal);
Def_Id := Entity (Arg_Internal);
Set_Exception_Code (Def_Id, Code_Val);
end if;
end if;
-
end Process_Extended_Import_Export_Exception_Pragma;
-------------------------------------------------
end if;
Check_Arg_Is_Local_Name (Arg_Internal);
-
end Process_Extended_Import_Export_Internal_Arg;
--------------------------------------------------
Arg_External : Node_Id;
Arg_Size : Node_Id)
is
- Def_Id : Entity_Id;
+ Def_Id : Entity_Id;
begin
Process_Extended_Import_Export_Internal_Arg (Arg_Internal);
("pragma% must designate an object", Arg_Internal);
end if;
- if Is_Psected (Def_Id) then
+ if Has_Rep_Pragma (Def_Id, Name_Common_Object)
+ or else
+ Has_Rep_Pragma (Def_Id, Name_Psect_Object)
+ then
Error_Pragma_Arg
- ("previous Psect_Object applies, pragma % not permitted",
+ ("previous Common/Psect_Object applies, pragma % not permitted",
Arg_Internal);
end if;
Set_Extended_Import_Export_External_Name (Def_Id, Arg_External);
- if Present (Arg_Size)
- and then Nkind (Arg_Size) /= N_Identifier
- and then Nkind (Arg_Size) /= N_String_Literal
- then
- Error_Pragma_Arg
- ("pragma% Size argument must be identifier or string literal",
- Arg_Size);
+ if Present (Arg_Size) then
+ Check_Arg_Is_External_Name (Arg_Size);
end if;
-- Export_Object case
if Prag_Id = Pragma_Export_Object then
-
if not Is_Library_Level_Entity (Def_Id) then
Error_Pragma_Arg
("argument for pragma% must be library level entity",
Arg_Internal);
end if;
- if Is_Exported (Def_Id) then
+ if Warn_On_Export_Import and then Is_Exported (Def_Id) then
Error_Msg_N
("?duplicate Export_Object pragma", N);
else
("cannot import a constant", Arg_Internal);
end if;
- if Has_Discriminants (Etype (Def_Id)) then
+ if Warn_On_Export_Import
+ and then Has_Discriminants (Etype (Def_Id))
+ then
Error_Msg_N
("imported value must be initialized?", Arg_Internal);
end if;
- if Is_Access_Type (Etype (Def_Id)) then
+ if Warn_On_Export_Import
+ and then Is_Access_Type (Etype (Def_Id))
+ then
Error_Pragma_Arg
("cannot import object of an access type?", Arg_Internal);
end if;
- if Is_Imported (Def_Id) then
+ if Warn_On_Export_Import
+ and then Is_Imported (Def_Id)
+ then
Error_Msg_N
("?duplicate Import_Object pragma", N);
+
+ -- Check for explicit initialization present. Note that an
+ -- initialization that generated by the code generator, e.g.
+ -- for an access type, does not count here.
+
+ elsif Present (Expression (Parent (Def_Id)))
+ and then
+ Comes_From_Source
+ (Original_Node (Expression (Parent (Def_Id))))
+ then
+ Error_Msg_Sloc := Sloc (Def_Id);
+ Error_Pragma_Arg
+ ("no initialization allowed for declaration of& #",
+ "\imported entities cannot be initialized ('R'M' 'B.1(24))",
+ Arg1);
else
Set_Imported (Def_Id);
+ Note_Possible_Modification (Arg_Internal);
end if;
end if;
-
end Process_Extended_Import_Export_Object_Pragma;
------------------------------------------------------
Match : Boolean;
Dval : Node_Id;
- function Same_Base_Type (Ptype, Formal : Entity_Id) return Boolean;
+ function Same_Base_Type
+ (Ptype : Node_Id;
+ Formal : Entity_Id) return Boolean;
-- Determines if Ptype references the type of Formal. Note that
- -- only the base types need to match according to the spec.
+ -- only the base types need to match according to the spec. Ptype
+ -- here is the argument from the pragma, which is either a type
+ -- name, or an access attribute.
+
+ --------------------
+ -- Same_Base_Type --
+ --------------------
+
+ function Same_Base_Type
+ (Ptype : Node_Id;
+ Formal : Entity_Id) return Boolean
+ is
+ Ftyp : constant Entity_Id := Base_Type (Etype (Formal));
+ Pref : Node_Id;
- function Same_Base_Type (Ptype, Formal : Entity_Id) return Boolean is
begin
- Find_Type (Ptype);
+ -- Case where pragma argument is typ'Access
- if not Is_Entity_Name (Ptype)
- or else Entity (Ptype) = Any_Type
+ if Nkind (Ptype) = N_Attribute_Reference
+ and then Attribute_Name (Ptype) = Name_Access
then
- raise Pragma_Exit;
- end if;
+ Pref := Prefix (Ptype);
+ Find_Type (Pref);
+
+ if not Is_Entity_Name (Pref)
+ or else Entity (Pref) = Any_Type
+ then
+ raise Pragma_Exit;
+ end if;
+
+ -- We have a match if the corresponding argument is of an
+ -- anonymous access type, and its designicated type matches
+ -- the type of the prefix of the access attribute
+
+ return Ekind (Ftyp) = E_Anonymous_Access_Type
+ and then Base_Type (Entity (Pref)) =
+ Base_Type (Etype (Designated_Type (Ftyp)));
- return Base_Type (Entity (Ptype)) = Base_Type (Etype (Formal));
+ -- Case where pragma argument is a type name
+
+ else
+ Find_Type (Ptype);
+
+ if not Is_Entity_Name (Ptype)
+ or else Entity (Ptype) = Any_Type
+ then
+ raise Pragma_Exit;
+ end if;
+
+ -- We have a match if the corresponding argument is of
+ -- the type given in the pragma (comparing base types)
+
+ return Base_Type (Entity (Ptype)) = Ftyp;
+ end if;
end Same_Base_Type;
-- Start of processing for
begin
Process_Extended_Import_Export_Internal_Arg (Arg_Internal);
- Hom_Id := Entity (Arg_Internal);
Ent := Empty;
Ambiguous := False;
- -- Loop through homonyms (overloadings) of Hom_Id
+ -- Loop through homonyms (overloadings) of the entity
+ Hom_Id := Entity (Arg_Internal);
while Present (Hom_Id) loop
Def_Id := Get_Base_Subprogram (Hom_Id);
then
Match := False;
+ elsif Etype (Def_Id) /= Standard_Void_Type
+ and then
+ (Chars (N) = Name_Export_Procedure
+ or else Chars (N) = Name_Import_Procedure)
+ then
+ Match := False;
+
-- Test parameter types if given. Note that this parameter
-- has not been analyzed (and must not be, since it is
-- semantic nonsense), so we get it as the parser left it.
and then Paren_Count (Arg_Parameter_Types) = 0
then
Ptype := First (Expressions (Arg_Parameter_Types));
-
while Present (Ptype) or else Present (Formal) loop
if No (Ptype)
or else No (Formal)
-- Import pragmas must be be for imported entities
- if (Prag_Id = Pragma_Import_Function
- or else
- Prag_Id = Pragma_Import_Procedure
- or else
- Prag_Id = Pragma_Import_Valued_Procedure)
+ if Prag_Id = Pragma_Import_Function
+ or else
+ Prag_Id = Pragma_Import_Procedure
+ or else
+ Prag_Id = Pragma_Import_Valued_Procedure
then
if not Is_Imported (Ent) then
Error_Pragma
("pragma Import or Interface must precede pragma%");
end if;
- -- For the Export cases, the pragma Export is sufficient to set
- -- the entity as exported, if it is not exported already. We
- -- leave the default Ada convention in this case.
+ -- Here we have the Export case which can set the entity as exported
+
+ -- But does not do so if the specified external name is null,
+ -- since that is taken as a signal in DEC Ada 83 (with which
+ -- we want to be compatible) to request no external name.
+
+ elsif Nkind (Arg_External) = N_String_Literal
+ and then String_Length (Strval (Arg_External)) = 0
+ then
+ null;
+
+ -- In all other cases, set entit as exported
else
Set_Exported (Ent, Arg_Internal);
-- nonsense, so we get it in exactly as the parser left it.
if Present (Arg_Mechanism) then
-
declare
Formal : Entity_Id;
Massoc : Node_Id;
-- Deal with positional ones first
Formal := First_Formal (Ent);
+
if Present (Expressions (Arg_Mechanism)) then
Mname := First (Expressions (Arg_Mechanism));
null;
else
- Error_Msg_NE
+ Error_Msg_FE
("default value for optional formal& is non-static!",
Arg_First_Optional_Parameter, Formal);
end if;
Next_Formal (Formal);
end loop;
end if;
-
end Process_Extended_Import_Export_Subprogram_Pragma;
--------------------------
then
-- User initialization is not allowed for imported object, but
-- the object declaration may contain a default initialization,
- -- that will be discarded.
+ -- that will be discarded. Note that an explicit initialization
+ -- only counts if it comes from source, otherwise it is simply
+ -- the code generator making an implicit initialization explicit.
if Present (Expression (Parent (Def_Id)))
and then Comes_From_Source (Expression (Parent (Def_Id)))
else
Set_Imported (Def_Id);
- Set_Is_Public (Def_Id);
Process_Interface_Name (Def_Id, Arg3, Arg4);
- end if;
- elsif Is_Subprogram (Def_Id)
- or else Is_Generic_Subprogram (Def_Id)
- then
- -- If the name is overloaded, pragma applies to all of the
- -- denoted entities in the same declarative part.
+ -- Note that we do not set Is_Public here. That's because we
+ -- only want to set if if there is no address clause, and we
+ -- don't know that yet, so we delay that processing till
+ -- freeze time.
- Hom_Id := Def_Id;
+ -- pragma Import completes deferred constants
+
+ if Ekind (Def_Id) = E_Constant then
+ Set_Has_Completion (Def_Id);
+ end if;
+
+ -- It is not possible to import a constant of an unconstrained
+ -- array type (e.g. string) because there is no simple way to
+ -- write a meaningful subtype for it.
+
+ if Is_Array_Type (Etype (Def_Id))
+ and then not Is_Constrained (Etype (Def_Id))
+ then
+ Error_Msg_NE
+ ("imported constant& must have a constrained subtype",
+ N, Def_Id);
+ end if;
+ end if;
+
+ elsif Is_Subprogram (Def_Id)
+ or else Is_Generic_Subprogram (Def_Id)
+ then
+ -- If the name is overloaded, pragma applies to all of the
+ -- denoted entities in the same declarative part.
+ Hom_Id := Def_Id;
while Present (Hom_Id) loop
Def_Id := Get_Base_Subprogram (Hom_Id);
then
null;
+ -- If it is not a subprogram, it must be in an outer
+ -- scope and pragma does not apply.
+
+ elsif not Is_Subprogram (Def_Id)
+ and then not Is_Generic_Subprogram (Def_Id)
+ then
+ null;
+
-- Verify that the homonym is in the same declarative
-- part (not just the same scope).
else
Set_Imported (Def_Id);
- -- If Import intrinsic, set intrinsic flag
- -- and verify that it is known as such.
+ -- Special processing for Convention_Intrinsic
if C = Convention_Intrinsic then
+
+ -- Link_Name argument not allowed for intrinsic
+
+ if Present (Arg3)
+ and then Chars (Arg3) = Name_Link_Name
+ then
+ Arg4 := Arg3;
+ end if;
+
+ if Present (Arg4) then
+ Error_Pragma_Arg
+ ("Link_Name argument not allowed for " &
+ "Import Intrinsic",
+ Arg4);
+ end if;
+
Set_Is_Intrinsic_Subprogram (Def_Id);
- Check_Intrinsic_Subprogram
- (Def_Id, Expression (Arg2));
+
+ -- If no external name is present, then check that
+ -- this is a valid intrinsic subprogram. If an external
+ -- name is present, then this is handled by the back end.
+
+ if No (Arg3) then
+ Check_Intrinsic_Subprogram (Def_Id, Expression (Arg2));
+ end if;
end if;
- -- All interfaced procedures need an external
- -- symbol created for them since they are
- -- always referenced from another object file.
+ -- All interfaced procedures need an external symbol
+ -- created for them since they are always referenced
+ -- from another object file.
Set_Is_Public (Def_Id);
+
+ -- Verify that the subprogram does not have a completion
+ -- through a renaming declaration. For other completions
+ -- the pragma appears as a too late representation.
+
+ declare
+ Decl : constant Node_Id := Unit_Declaration_Node (Def_Id);
+
+ begin
+ if Present (Decl)
+ and then Nkind (Decl) = N_Subprogram_Declaration
+ and then Present (Corresponding_Body (Decl))
+ and then
+ Nkind
+ (Unit_Declaration_Node
+ (Corresponding_Body (Decl))) =
+ N_Subprogram_Renaming_Declaration
+ then
+ Error_Msg_Sloc := Sloc (Def_Id);
+ Error_Msg_NE ("cannot import&#," &
+ " already completed by a renaming",
+ N, Def_Id);
+ end if;
+ end;
+
Set_Has_Completion (Def_Id);
Process_Interface_Name (Def_Id, Arg3, Arg4);
end if;
-- for packages, exceptions, and record components.
elsif C = Convention_Java
- and then (Ekind (Def_Id) = E_Package
- or else Ekind (Def_Id) = E_Exception
- or else Nkind (Parent (Def_Id)) = N_Component_Declaration)
+ and then
+ (Ekind (Def_Id) = E_Package
+ or else Ekind (Def_Id) = E_Exception
+ or else Nkind (Parent (Def_Id)) = N_Component_Declaration)
then
Set_Imported (Def_Id);
Set_Is_Public (Def_Id);
if Nkind (Parent (N)) = N_Compilation_Unit_Aux then
declare
Cunit : constant Node_Id := Parent (Parent (N));
-
begin
- Set_Body_Required (Cunit, False);
+ Set_Body_Required (Cunit, False);
end;
end if;
-
end Process_Import_Or_Interface;
--------------------
--------------------
procedure Process_Inline (Active : Boolean) is
- Assoc : Node_Id;
- Decl : Node_Id;
- Subp_Id : Node_Id;
- Subp : Entity_Id;
- Applies : Boolean;
+ Assoc : Node_Id;
+ Decl : Node_Id;
+ Subp_Id : Node_Id;
+ Subp : Entity_Id;
+ Applies : Boolean;
+ Effective : Boolean := False;
procedure Make_Inline (Subp : Entity_Id);
-- Subp is the defining unit name of the subprogram
procedure Set_Inline_Flags (Subp : Entity_Id);
-- Sets Is_Inlined and Has_Pragma_Inline flags for Subp
+ function Inlining_Not_Possible (Subp : Entity_Id) return Boolean;
+ -- Returns True if it can be determined at this stage that inlining
+ -- is not possible, for examle if the body is available and contains
+ -- exception handlers, we prevent inlining, since otherwise we can
+ -- get undefined symbols at link time. This function also emits a
+ -- warning if front-end inlining is enabled and the pragma appears
+ -- too late.
+ -- ??? is business with link symbols still valid, or does it relate
+ -- to front end ZCX which is being phased out ???
+
+ ---------------------------
+ -- Inlining_Not_Possible --
+ ---------------------------
+
+ function Inlining_Not_Possible (Subp : Entity_Id) return Boolean is
+ Decl : constant Node_Id := Unit_Declaration_Node (Subp);
+ Stats : Node_Id;
+
+ begin
+ if Nkind (Decl) = N_Subprogram_Body then
+ Stats := Handled_Statement_Sequence (Decl);
+ return Present (Exception_Handlers (Stats))
+ or else Present (At_End_Proc (Stats));
+
+ elsif Nkind (Decl) = N_Subprogram_Declaration
+ and then Present (Corresponding_Body (Decl))
+ then
+ if Front_End_Inlining
+ and then Analyzed (Corresponding_Body (Decl))
+ then
+ Error_Msg_N ("pragma appears too late, ignored?", N);
+ return True;
+
+ -- If the subprogram is a renaming as body, the body is
+ -- just a call to the renamed subprogram, and inlining is
+ -- trivially possible.
+
+ elsif
+ Nkind (Unit_Declaration_Node (Corresponding_Body (Decl)))
+ = N_Subprogram_Renaming_Declaration
+ then
+ return False;
+
+ else
+ Stats :=
+ Handled_Statement_Sequence
+ (Unit_Declaration_Node (Corresponding_Body (Decl)));
+
+ return
+ Present (Exception_Handlers (Stats))
+ or else Present (At_End_Proc (Stats));
+ end if;
+
+ else
+ -- If body is not available, assume the best, the check is
+ -- performed again when compiling enclosing package bodies.
+
+ return False;
+ end if;
+ end Inlining_Not_Possible;
+
-----------------
-- Make_Inline --
-----------------
procedure Make_Inline (Subp : Entity_Id) is
- Kind : Entity_Kind := Ekind (Subp);
+ Kind : constant Entity_Kind := Ekind (Subp);
Inner_Subp : Entity_Id := Subp;
begin
if Etype (Subp) = Any_Type then
return;
+ -- If inlining is not possible, for now do not treat as an error
+
+ elsif Inlining_Not_Possible (Subp) then
+ Applies := True;
+ return;
+
-- Here we have a candidate for inlining, but we must exclude
-- derived operations. Otherwise we will end up trying to
-- inline a phantom declaration, and the result would be to
-- Processing for procedure, operator or function.
-- If subprogram is aliased (as for an instance) indicate
- -- that the renamed entity is inlined.
+ -- that the renamed entity (if declared in the same unit)
+ -- is inlined.
- if Kind = E_Procedure
- or else Kind = E_Function
- or else Kind = E_Operator
- then
+ if Is_Subprogram (Subp) then
while Present (Alias (Inner_Subp)) loop
Inner_Subp := Alias (Inner_Subp);
end loop;
- Set_Inline_Flags (Inner_Subp);
+ if In_Same_Source_Unit (Subp, Inner_Subp) then
+ Set_Inline_Flags (Inner_Subp);
- Decl := Parent (Parent (Inner_Subp));
+ Decl := Parent (Parent (Inner_Subp));
- if Nkind (Decl) = N_Subprogram_Declaration
- and then Present (Corresponding_Body (Decl))
- then
- Set_Inline_Flags (Corresponding_Body (Decl));
+ if Nkind (Decl) = N_Subprogram_Declaration
+ and then Present (Corresponding_Body (Decl))
+ then
+ Set_Inline_Flags (Corresponding_Body (Decl));
+ end if;
end if;
Applies := True;
-- the point of instantiation, to determine whether the
-- body should be generated.
- elsif Kind = E_Generic_Procedure
- or else Kind = E_Generic_Function
- then
+ elsif Is_Generic_Subprogram (Subp) then
Set_Inline_Flags (Subp);
Applies := True;
- -- Literals are by definition inlined.
+ -- Literals are by definition inlined
elsif Kind = E_Enumeration_Literal then
null;
Set_Has_Pragma_Inline (Subp);
Set_Next_Rep_Item (N, First_Rep_Item (Subp));
Set_First_Rep_Item (Subp, N);
+ Effective := True;
end if;
end Set_Inline_Flags;
if not Applies then
Error_Pragma_Arg
("inappropriate argument for pragma%", Assoc);
+
+ elsif not Effective
+ and then Warn_On_Redundant_Constructs
+ then
+ if Inlining_Not_Possible (Subp) then
+ Error_Msg_NE
+ ("pragma Inline for& is ignored?", N, Entity (Subp_Id));
+ else
+ Error_Msg_NE
+ ("pragma Inline for& is redundant?", N, Entity (Subp_Id));
+ end if;
end if;
Next (Assoc);
end loop;
-
end Process_Inline;
----------------------------
-- particular that no spaces or other obviously incorrect characters
-- appear. This is only a warning, since any characters are allowed.
+ ----------------------------------
+ -- Check_Form_Of_Interface_Name --
+ ----------------------------------
+
procedure Check_Form_Of_Interface_Name (SN : Node_Id) is
S : constant String_Id := Strval (Expr_Value_S (SN));
SL : constant Nat := String_Length (S);
for J in 1 .. SL loop
C := Get_String_Char (S, J);
- if not In_Character_Range (C)
- or else Get_Character (C) = ' '
- or else Get_Character (C) = ','
+ if Warn_On_Export_Import
+ and then (not In_Character_Range (C)
+ or else Get_Character (C) = ' '
+ or else Get_Character (C) = ',')
then
Error_Msg_N
("?interface name contains illegal character", SN);
-- If there is no link name, just set the external name
if No (Link_Nam) then
- Set_Encoded_Interface_Name
- (Get_Base_Subprogram (Subprogram_Def),
- Adjust_External_Name_Case (Expr_Value_S (Ext_Nam)));
+ Link_Nam := Adjust_External_Name_Case (Expr_Value_S (Ext_Nam));
-- For the Link_Name case, the given literal is preceded by an
-- asterisk, which indicates to GCC that the given name should
Link_Nam :=
Make_String_Literal (Sloc (Link_Nam), End_String);
-
- Set_Encoded_Interface_Name
- (Get_Base_Subprogram (Subprogram_Def), Link_Nam);
end if;
+
+ Set_Encoded_Interface_Name
+ (Get_Base_Subprogram (Subprogram_Def), Link_Nam);
+ Check_Duplicated_Export_Name (Link_Nam);
end Process_Interface_Name;
-----------------------------------------
-----------------------------------------
procedure Process_Interrupt_Or_Attach_Handler is
- Arg1_X : constant Node_Id := Expression (Arg1);
- Prot_Proc : constant Entity_Id := Entity (Arg1_X);
- Prot_Type : constant Entity_Id := Scope (Prot_Proc);
+ Arg1_X : constant Node_Id := Expression (Arg1);
+ Handler_Proc : constant Entity_Id := Entity (Arg1_X);
+ Proc_Scope : constant Entity_Id := Scope (Handler_Proc);
begin
- Set_Is_Interrupt_Handler (Prot_Proc);
+ Set_Is_Interrupt_Handler (Handler_Proc);
- if Prag_Id = Pragma_Interrupt_Handler
- or Prag_Id = Pragma_Attach_Handler
- then
- Record_Rep_Item (Prot_Type, N);
- end if;
+ -- If the pragma is not associated with a handler procedure
+ -- within a protected type, then it must be for a nonprotected
+ -- procedure for the AAMP target, in which case we don't
+ -- associate a representation item with the procedure's scope.
+ if Ekind (Proc_Scope) = E_Protected_Type then
+ if Prag_Id = Pragma_Interrupt_Handler
+ or else
+ Prag_Id = Pragma_Attach_Handler
+ then
+ Record_Rep_Item (Proc_Scope, N);
+ end if;
+ end if;
end Process_Interrupt_Or_Attach_Handler;
+ --------------------------------------------------
+ -- Process_Restrictions_Or_Restriction_Warnings --
+ --------------------------------------------------
+
+ -- Note: some of the simple identifier cases were handled in par-prag,
+ -- but it is harmless (and more straightforward) to simply handle all
+ -- cases here, even if it means we repeat a bit of work in some cases.
+
+ procedure Process_Restrictions_Or_Restriction_Warnings is
+ Arg : Node_Id;
+ R_Id : Restriction_Id;
+ Id : Name_Id;
+ Expr : Node_Id;
+ Val : Uint;
+
+ procedure Check_Unit_Name (N : Node_Id);
+ -- Checks unit name parameter for No_Dependence. Returns if it has
+ -- an appropriate form, otherwise raises pragma argument error.
+
+ procedure Set_Warning (R : All_Restrictions);
+ -- If this is a Restriction_Warnings pragma, set warning flag,
+ -- otherwise reset the flag.
+
+ ---------------------
+ -- Check_Unit_Name --
+ ---------------------
+
+ procedure Check_Unit_Name (N : Node_Id) is
+ begin
+ if Nkind (N) = N_Selected_Component then
+ Check_Unit_Name (Prefix (N));
+ Check_Unit_Name (Selector_Name (N));
+
+ elsif Nkind (N) = N_Identifier then
+ return;
+
+ else
+ Error_Pragma_Arg
+ ("wrong form for unit name for No_Dependence", N);
+ end if;
+ end Check_Unit_Name;
+
+ -----------------
+ -- Set_Warning --
+ -----------------
+
+ procedure Set_Warning (R : All_Restrictions) is
+ begin
+ if Prag_Id = Pragma_Restriction_Warnings then
+ Restriction_Warnings (R) := True;
+ else
+ Restriction_Warnings (R) := False;
+ end if;
+ end Set_Warning;
+
+ -- Start of processing for Process_Restrictions_Or_Restriction_Warnings
+
+ begin
+ Check_Ada_83_Warning;
+ Check_At_Least_N_Arguments (1);
+ Check_Valid_Configuration_Pragma;
+
+ Arg := Arg1;
+ while Present (Arg) loop
+ Id := Chars (Arg);
+ Expr := Expression (Arg);
+
+ -- Case of no restriction identifier present
+
+ if Id = No_Name then
+ if Nkind (Expr) /= N_Identifier then
+ Error_Pragma_Arg
+ ("invalid form for restriction", Arg);
+ end if;
+
+ R_Id :=
+ Get_Restriction_Id
+ (Process_Restriction_Synonyms (Expr));
+
+ if R_Id not in All_Boolean_Restrictions then
+ Error_Pragma_Arg
+ ("invalid restriction identifier", Arg);
+ end if;
+
+ if Implementation_Restriction (R_Id) then
+ Check_Restriction
+ (No_Implementation_Restrictions, Arg);
+ end if;
+
+ Set_Restriction (R_Id, N);
+ Set_Warning (R_Id);
+
+ -- A very special case that must be processed here:
+ -- pragma Restrictions (No_Exceptions) turns off
+ -- all run-time checking. This is a bit dubious in
+ -- terms of the formal language definition, but it
+ -- is what is intended by RM H.4(12).
+
+ if R_Id = No_Exceptions then
+ Scope_Suppress := (others => True);
+ end if;
+
+ -- Case of No_Dependence => unit-name. Note that the parser
+ -- already made the necessary entry in the No_Dependence table.
+
+ elsif Id = Name_No_Dependence then
+ Check_Unit_Name (Expr);
+
+ -- All other cases of restriction identifier present
+
+ else
+ R_Id := Get_Restriction_Id (Process_Restriction_Synonyms (Arg));
+ Analyze_And_Resolve (Expr, Any_Integer);
+
+ if R_Id not in All_Parameter_Restrictions then
+ Error_Pragma_Arg
+ ("invalid restriction parameter identifier", Arg);
+
+ elsif not Is_OK_Static_Expression (Expr) then
+ Flag_Non_Static_Expr
+ ("value must be static expression!", Expr);
+ raise Pragma_Exit;
+
+ elsif not Is_Integer_Type (Etype (Expr))
+ or else Expr_Value (Expr) < 0
+ then
+ Error_Pragma_Arg
+ ("value must be non-negative integer", Arg);
+
+ -- Restriction pragma is active
+
+ else
+ Val := Expr_Value (Expr);
+
+ if not UI_Is_In_Int_Range (Val) then
+ Error_Pragma_Arg
+ ("pragma ignored, value too large?", Arg);
+ else
+ Set_Restriction (R_Id, N, Integer (UI_To_Int (Val)));
+ Set_Warning (R_Id);
+ end if;
+ end if;
+ end if;
+
+ Next (Arg);
+ end loop;
+ end Process_Restrictions_Or_Restriction_Warnings;
+
---------------------------------
-- Process_Suppress_Unsuppress --
---------------------------------
+ -- Note: this procedure makes entries in the check suppress data
+ -- structures managed by Sem. See spec of package Sem for full
+ -- details on how we handle recording of check suppression.
+
procedure Process_Suppress_Unsuppress (Suppress_Case : Boolean) is
- C : Check_Id;
- E_Id : Node_Id;
- E : Entity_Id;
- Effective : Boolean;
+ C : Check_Id;
+ E_Id : Node_Id;
+ E : Entity_Id;
+
+ In_Package_Spec : constant Boolean :=
+ (Ekind (Current_Scope) = E_Package
+ or else
+ Ekind (Current_Scope) = E_Generic_Package)
+ and then not In_Package_Body (Current_Scope);
procedure Suppress_Unsuppress_Echeck (E : Entity_Id; C : Check_Id);
-- Used to suppress a single check on the given entity
+ --------------------------------
+ -- Suppress_Unsuppress_Echeck --
+ --------------------------------
+
procedure Suppress_Unsuppress_Echeck (E : Entity_Id; C : Check_Id) is
- begin
- -- First set appropriate suppress flags in the entity
-
- case C is
- when Access_Check =>
- Effective := Suppress_Access_Checks (E);
- Set_Suppress_Access_Checks (E, Suppress_Case);
-
- when Accessibility_Check =>
- Effective := Suppress_Accessibility_Checks (E);
- Set_Suppress_Accessibility_Checks (E, Suppress_Case);
-
- when Discriminant_Check =>
- Effective := Suppress_Discriminant_Checks (E);
- Set_Suppress_Discriminant_Checks (E, Suppress_Case);
-
- when Division_Check =>
- Effective := Suppress_Division_Checks (E);
- Set_Suppress_Division_Checks (E, Suppress_Case);
-
- when Elaboration_Check =>
- Effective := Suppress_Elaboration_Checks (E);
- Set_Suppress_Elaboration_Checks (E, Suppress_Case);
-
- when Index_Check =>
- Effective := Suppress_Index_Checks (E);
- Set_Suppress_Index_Checks (E, Suppress_Case);
-
- when Length_Check =>
- Effective := Suppress_Length_Checks (E);
- Set_Suppress_Length_Checks (E, Suppress_Case);
-
- when Overflow_Check =>
- Effective := Suppress_Overflow_Checks (E);
- Set_Suppress_Overflow_Checks (E, Suppress_Case);
-
- when Range_Check =>
- Effective := Suppress_Range_Checks (E);
- Set_Suppress_Range_Checks (E, Suppress_Case);
-
- when Storage_Check =>
- Effective := Suppress_Storage_Checks (E);
- Set_Suppress_Storage_Checks (E, Suppress_Case);
-
- when Tag_Check =>
- Effective := Suppress_Tag_Checks (E);
- Set_Suppress_Tag_Checks (E, Suppress_Case);
-
- when All_Checks =>
- Suppress_Unsuppress_Echeck (E, Access_Check);
- Suppress_Unsuppress_Echeck (E, Accessibility_Check);
- Suppress_Unsuppress_Echeck (E, Discriminant_Check);
- Suppress_Unsuppress_Echeck (E, Division_Check);
- Suppress_Unsuppress_Echeck (E, Elaboration_Check);
- Suppress_Unsuppress_Echeck (E, Index_Check);
- Suppress_Unsuppress_Echeck (E, Length_Check);
- Suppress_Unsuppress_Echeck (E, Overflow_Check);
- Suppress_Unsuppress_Echeck (E, Range_Check);
- Suppress_Unsuppress_Echeck (E, Storage_Check);
- Suppress_Unsuppress_Echeck (E, Tag_Check);
- end case;
+ ESR : constant Entity_Check_Suppress_Record :=
+ (Entity => E,
+ Check => C,
+ Suppress => Suppress_Case);
- -- If the entity is not declared in the current scope, then we
- -- make an entry in the Entity_Suppress table so that the flag
- -- will be removed on exit. This entry is only made if the
- -- suppress did something (i.e. the flag was not already set).
+ begin
+ Set_Checks_May_Be_Suppressed (E);
- if Effective and then Scope (E) /= Current_Scope then
- Entity_Suppress.Increment_Last;
- Entity_Suppress.Table
- (Entity_Suppress.Last).Entity := E;
- Entity_Suppress.Table
- (Entity_Suppress.Last).Check := C;
+ if In_Package_Spec then
+ Global_Entity_Suppress.Append (ESR);
+ else
+ Local_Entity_Suppress.Append (ESR);
end if;
-- If this is a first subtype, and the base type is distinct,
if not Is_Check_Name (Chars (Expression (Arg1))) then
Error_Pragma_Arg
("argument of pragma% is not valid check name", Arg1);
-
else
C := Get_Check_Id (Chars (Expression (Arg1)));
end if;
if Arg_Count = 1 then
- case C is
- when Access_Check =>
- Scope_Suppress.Access_Checks := Suppress_Case;
-
- when Accessibility_Check =>
- Scope_Suppress.Accessibility_Checks := Suppress_Case;
- when Discriminant_Check =>
- Scope_Suppress.Discriminant_Checks := Suppress_Case;
+ -- Make an entry in the local scope suppress table. This is the
+ -- table that directly shows the current value of the scope
+ -- suppress check for any check id value.
- when Division_Check =>
- Scope_Suppress.Division_Checks := Suppress_Case;
-
- when Elaboration_Check =>
- Scope_Suppress.Elaboration_Checks := Suppress_Case;
-
- when Index_Check =>
- Scope_Suppress.Index_Checks := Suppress_Case;
-
- when Length_Check =>
- Scope_Suppress.Length_Checks := Suppress_Case;
-
- when Overflow_Check =>
- Scope_Suppress.Overflow_Checks := Suppress_Case;
-
- when Range_Check =>
- Scope_Suppress.Range_Checks := Suppress_Case;
-
- when Storage_Check =>
- Scope_Suppress.Storage_Checks := Suppress_Case;
-
- when Tag_Check =>
- Scope_Suppress.Tag_Checks := Suppress_Case;
+ if C = All_Checks then
+ for J in Scope_Suppress'Range loop
+ Scope_Suppress (J) := Suppress_Case;
+ end loop;
+ else
+ Scope_Suppress (C) := Suppress_Case;
+ end if;
- when All_Checks =>
- Scope_Suppress := (others => Suppress_Case);
+ -- Also make an entry in the Local_Entity_Suppress table. See
+ -- extended description in the package spec of Sem for details.
- end case;
+ Local_Entity_Suppress.Append
+ ((Entity => Empty,
+ Check => C,
+ Suppress => Suppress_Case));
-- Case of two arguments present, where the check is
-- suppressed for a specified entity (given as the second
if E = Any_Id then
return;
- else
- loop
- Suppress_Unsuppress_Echeck (E, C);
+ end if;
- if Is_Generic_Instance (E)
- and then Is_Subprogram (E)
- and then Present (Alias (E))
- then
- Suppress_Unsuppress_Echeck (Alias (E), C);
- end if;
+ -- Enforce RM 11.5(7) which requires that for a pragma that
+ -- appears within a package spec, the named entity must be
+ -- within the package spec. We allow the package name itself
+ -- to be mentioned since that makes sense, although it is not
+ -- strictly allowed by 11.5(7).
- if C = Elaboration_Check and then Suppress_Case then
- Set_Suppress_Elaboration_Warnings (E);
- end if;
+ if In_Package_Spec
+ and then E /= Current_Scope
+ and then Scope (E) /= Current_Scope
+ then
+ Error_Pragma_Arg
+ ("entity in pragma% is not in package spec ('R'M 11.5(7))",
+ Arg2);
+ end if;
- -- If we are within a package specification, the
- -- pragma only applies to homonyms in the same scope.
+ -- Loop through homonyms. As noted below, in the case of a package
+ -- spec, only homonyms within the package spec are considered.
- exit when No (Homonym (E))
- or else (Scope (Homonym (E)) /= Current_Scope
- and then Ekind (Current_Scope) = E_Package
- and then not In_Package_Body (Current_Scope));
+ loop
+ Suppress_Unsuppress_Echeck (E, C);
- E := Homonym (E);
- end loop;
- end if;
- end if;
+ if Is_Generic_Instance (E)
+ and then Is_Subprogram (E)
+ and then Present (Alias (E))
+ then
+ Suppress_Unsuppress_Echeck (Alias (E), C);
+ end if;
+
+ -- Move to next homonym
+
+ E := Homonym (E);
+ exit when No (E);
+
+ -- If we are within a package specification, the
+ -- pragma only applies to homonyms in the same scope.
+ exit when In_Package_Spec
+ and then Scope (E) /= Current_Scope;
+ end loop;
+ end if;
end Process_Suppress_Unsuppress;
------------------
Set_Is_Exported (E);
+ -- Generate a reference for entity explicitly, because the
+ -- identifier may be overloaded and name resolution will not
+ -- generate one.
+
+ Generate_Reference (E, Arg);
+
-- Deal with exporting non-library level entity
if not Is_Library_Level_Entity (E) then
else
Set_Is_Public (E);
Set_Is_Statically_Allocated (E);
+
+ -- Warn if the corresponding W flag is set and the pragma
+ -- comes from source. The latter may not be true e.g. on
+ -- VMS where we expand export pragmas for exception codes
+ -- associated with imported or exported exceptions. We do
+ -- not want to generate a warning for something that the
+ -- user did not write.
+
+ if Warn_On_Export_Import
+ and then Comes_From_Source (Arg)
+ then
+ Error_Msg_NE
+ ("?& has been made static as a result of Export", Arg, E);
+ Error_Msg_N
+ ("\this usage is non-standard and non-portable", Arg);
+ end if;
end if;
end if;
- if Inside_A_Generic then
+ if Warn_On_Export_Import and then Is_Type (E) then
Error_Msg_NE
- ("all instances of& will have the same external name?", Arg, E);
+ ("exporting a type has no effect?", Arg, E);
end if;
+ if Warn_On_Export_Import and Inside_A_Generic then
+ Error_Msg_NE
+ ("all instances of& will have the same external name?", Arg, E);
+ end if;
end Set_Exported;
----------------------------------------------
begin
if No (Arg_External) then
return;
+ end if;
+
+ Check_Arg_Is_External_Name (Arg_External);
- elsif Nkind (Arg_External) = N_String_Literal then
+ if Nkind (Arg_External) = N_String_Literal then
if String_Length (Strval (Arg_External)) = 0 then
return;
else
elsif Nkind (Arg_External) = N_Identifier then
New_Name := Get_Default_External_Name (Arg_External);
+ -- Check_Arg_Is_External_Name should let through only
+ -- identifiers and string literals or static string
+ -- expressions (which are folded to string literals).
+
else
- Error_Pragma_Arg
- ("incorrect form for External parameter for pragma%",
- Arg_External);
+ raise Program_Error;
end if;
-- If we already have an external name set (by a prior normal
-- Import or Export pragma), then the external names must match
if Present (Interface_Name (Internal_Ent)) then
- declare
+ Check_Matching_Internal_Names : declare
S1 : constant String_Id := Strval (Old_Name);
S2 : constant String_Id := Strval (New_Name);
procedure Mismatch;
-- Called if names do not match
+ --------------
+ -- Mismatch --
+ --------------
+
procedure Mismatch is
begin
Error_Msg_Sloc := Sloc (Old_Name);
Arg_External);
end Mismatch;
+ -- Start of processing for Check_Matching_Internal_Names
+
begin
if String_Length (S1) /= String_Length (S2) then
Mismatch;
end if;
end loop;
end if;
- end;
+ end Check_Matching_Internal_Names;
-- Otherwise set the given name
else
Set_Encoded_Interface_Name (Internal_Ent, New_Name);
+ Check_Duplicated_Export_Name (New_Name);
end if;
-
end Set_Extended_Import_Export_External_Name;
------------------
procedure Bad_Mechanism;
-- Signal bad mechanism name
+ ---------------
+ -- Bad_Class --
+ ---------------
+
procedure Bad_Class is
begin
Error_Pragma_Arg ("unrecognized descriptor class name", Class);
end Bad_Class;
+ -------------------------
+ -- Bad_Mechanism_Value --
+ -------------------------
+
procedure Bad_Mechanism is
begin
Error_Pragma_Arg ("unrecognized mechanism name", Mech_Name);
else
Bad_Class;
end if;
-
end Set_Mechanism_Value;
- -- Start of processing for Analyze_Pragma
+ ---------------------------
+ -- Set_Ravenscar_Profile --
+ ---------------------------
- begin
- if not Is_Pragma_Name (Chars (N)) then
- Error_Pragma ("unrecognized pragma%!?");
- else
- Prag_Id := Get_Pragma_Id (Chars (N));
- end if;
+ -- The tasks to be done here are
- -- Preset arguments
+ -- Set required policies
- Arg1 := Empty;
- Arg2 := Empty;
- Arg3 := Empty;
- Arg4 := Empty;
+ -- pragma Task_Dispatching_Policy (FIFO_Within_Priorities)
+ -- pragma Locking_Policy (Ceiling_Locking)
- if Present (Pragma_Argument_Associations (N)) then
- Arg1 := First (Pragma_Argument_Associations (N));
+ -- Set Detect_Blocking mode
- if Present (Arg1) then
- Arg2 := Next (Arg1);
+ -- Set required restrictions (see System.Rident for detailed list)
- if Present (Arg2) then
+ procedure Set_Ravenscar_Profile (N : Node_Id) is
+ begin
+ -- pragma Task_Dispatching_Policy (FIFO_Within_Priorities)
+
+ if Task_Dispatching_Policy /= ' '
+ and then Task_Dispatching_Policy /= 'F'
+ then
+ Error_Msg_Sloc := Task_Dispatching_Policy_Sloc;
+ Error_Pragma ("Profile (Ravenscar) incompatible with policy#");
+
+ -- Set the FIFO_Within_Priorities policy, but always
+ -- preserve System_Location since we like the error
+ -- message with the run time name.
+
+ else
+ Task_Dispatching_Policy := 'F';
+
+ if Task_Dispatching_Policy_Sloc /= System_Location then
+ Task_Dispatching_Policy_Sloc := Loc;
+ end if;
+ end if;
+
+ -- pragma Locking_Policy (Ceiling_Locking)
+
+ if Locking_Policy /= ' '
+ and then Locking_Policy /= 'C'
+ then
+ Error_Msg_Sloc := Locking_Policy_Sloc;
+ Error_Pragma ("Profile (Ravenscar) incompatible with policy#");
+
+ -- Set the Ceiling_Locking policy, but always preserve
+ -- System_Location since we like the error message with the
+ -- run time name.
+
+ else
+ Locking_Policy := 'C';
+
+ if Locking_Policy_Sloc /= System_Location then
+ Locking_Policy_Sloc := Loc;
+ end if;
+ end if;
+
+ -- pragma Detect_Blocking
+
+ Detect_Blocking := True;
+
+ -- Set the corresponding restrictions
+
+ Set_Profile_Restrictions (Ravenscar, N, Warn => False);
+ end Set_Ravenscar_Profile;
+
+ -- Start of processing for Analyze_Pragma
+
+ begin
+ if not Is_Pragma_Name (Chars (N)) then
+ if Warn_On_Unrecognized_Pragma then
+ Error_Pragma ("unrecognized pragma%!?");
+ else
+ raise Pragma_Exit;
+ end if;
+ else
+ Prag_Id := Get_Pragma_Id (Chars (N));
+ end if;
+
+ -- Preset arguments
+
+ Arg1 := Empty;
+ Arg2 := Empty;
+ Arg3 := Empty;
+ Arg4 := Empty;
+
+ if Present (Pragma_Argument_Associations (N)) then
+ Arg1 := First (Pragma_Argument_Associations (N));
+
+ if Present (Arg1) then
+ Arg2 := Next (Arg1);
+
+ if Present (Arg2) then
Arg3 := Next (Arg2);
if Present (Arg3) then
declare
Arg_Node : Node_Id;
-
begin
Arg_Count := 0;
Arg_Node := Arg1;
-
while Present (Arg_Node) loop
Arg_Count := Arg_Count + 1;
Next (Arg_Node);
-- pragma Ada_83;
-- Note: this pragma also has some specific processing in Par.Prag
- -- because we want to set the Ada 83 mode switch during parsing.
+ -- because we want to set the Ada version mode during parsing.
when Pragma_Ada_83 =>
GNAT_Pragma;
- Ada_83 := True;
- Ada_95 := False;
+ Ada_Version := Ada_83;
Check_Arg_Count (0);
------------
-- pragma Ada_95;
-- Note: this pragma also has some specific processing in Par.Prag
- -- because we want to set the Ada 83 mode switch during parsing.
+ -- because we want to set the Ada 83 version mode during parsing.
when Pragma_Ada_95 =>
GNAT_Pragma;
- Ada_83 := False;
- Ada_95 := True;
+ Ada_Version := Ada_95;
Check_Arg_Count (0);
+ ------------
+ -- Ada_05 --
+ ------------
+
+ -- pragma Ada_05;
+ -- pragma Ada_05 (LOCAL_NAME);
+
+ -- Note: this pragma also has some specific processing in Par.Prag
+ -- because we want to set the Ada 2005 version mode during parsing.
+
+ when Pragma_Ada_05 => declare
+ E_Id : Node_Id;
+
+ begin
+ GNAT_Pragma;
+
+ if Arg_Count = 1 then
+ Check_Arg_Is_Local_Name (Arg1);
+ E_Id := Expression (Arg1);
+
+ if Etype (E_Id) = Any_Type then
+ return;
+ end if;
+
+ Set_Is_Ada_2005 (Entity (E_Id));
+
+ else
+ Ada_Version := Ada_05;
+ Check_Arg_Count (0);
+ end if;
+ end;
+
----------------------
-- All_Calls_Remote --
----------------------
Error_Pragma_Arg ("ambiguous argument for pragma%", Exp);
else
- Resolve (Exp, Etype (Exp));
+ Resolve (Exp);
end if;
Next (Arg);
Error_Pragma_Arg
("pragma% cannot be applied to function", Arg1);
- elsif Ekind (Nm) = E_Record_Type
- and then Present (Corresponding_Remote_Type (Nm))
- then
- N := Declaration_Node (Corresponding_Remote_Type (Nm));
+ elsif Is_Remote_Access_To_Subprogram_Type (Nm) then
+
+ if Is_Record_Type (Nm) then
+ -- A record type that is the Equivalent_Type for
+ -- a remote access-to-subprogram type.
+
+ N := Declaration_Node (Corresponding_Remote_Type (Nm));
+
+ else
+ -- A non-expanded RAS type (case where distribution is
+ -- not enabled).
+
+ N := Declaration_Node (Nm);
+ end if;
if Nkind (N) = N_Full_Type_Declaration
and then Nkind (Type_Definition (N)) =
L := Parameter_Specifications (Type_Definition (N));
Process_Async_Pragma;
+ if Is_Asynchronous (Nm)
+ and then Expander_Active
+ and then Get_PCS_Name /= Name_No_DSA
+ then
+ RACW_Type_Is_Asynchronous (Underlying_RACW_Type (Nm));
+ end if;
+
else
Error_Pragma_Arg
("pragma% cannot reference access-to-function type",
else
Error_Pragma_Arg ("inappropriate argument for pragma%", Arg1);
end if;
-
end Asynchronous;
------------
K : Node_Kind;
begin
- GNAT_Pragma;
Check_Ada_83_Warning;
Check_No_Identifiers;
Check_Arg_Count (1);
Check_Ada_83_Warning;
Check_No_Identifiers;
Check_Arg_Count (2);
- Check_Interrupt_Or_Attach_Handler;
- Analyze_And_Resolve (Expression (Arg2), RTE (RE_Interrupt_Id));
- Process_Interrupt_Or_Attach_Handler;
+
+ if No_Run_Time_Mode then
+ Error_Msg_CRT ("Attach_Handler pragma", N);
+ else
+ Check_Interrupt_Or_Attach_Handler;
+
+ -- The expression that designates the attribute may
+ -- depend on a discriminant, and is therefore a per-
+ -- object expression, to be expanded in the init proc.
+ -- If expansion is enabled, perform semantic checks
+ -- on a copy only.
+
+ if Expander_Active then
+ declare
+ Temp : constant Node_Id :=
+ New_Copy_Tree (Expression (Arg2));
+ begin
+ Set_Parent (Temp, N);
+ Pre_Analyze_And_Resolve (Temp, RTE (RE_Interrupt_ID));
+ end;
+
+ else
+ Analyze (Expression (Arg2));
+ Resolve (Expression (Arg2), RTE (RE_Interrupt_ID));
+ end if;
+
+ Process_Interrupt_Or_Attach_Handler;
+ end if;
--------------------
-- C_Pass_By_Copy --
-- Processing for this pragma is shared with Psect_Object
+ --------------------------
+ -- Compile_Time_Warning --
+ --------------------------
+
+ -- pragma Compile_Time_Warning
+ -- (boolean_EXPRESSION, static_string_EXPRESSION);
+
+ when Pragma_Compile_Time_Warning => Compile_Time_Warning : declare
+ Arg1x : constant Node_Id := Get_Pragma_Arg (Arg1);
+
+ begin
+ GNAT_Pragma;
+ Check_Arg_Count (2);
+ Check_No_Identifiers;
+ Check_Arg_Is_Static_Expression (Arg2, Standard_String);
+ Analyze_And_Resolve (Arg1x, Standard_Boolean);
+
+ if Compile_Time_Known_Value (Arg1x) then
+ if Is_True (Expr_Value (Get_Pragma_Arg (Arg1))) then
+ String_To_Name_Buffer (Strval (Get_Pragma_Arg (Arg2)));
+ Add_Char_To_Name_Buffer ('?');
+
+ declare
+ Msg : String (1 .. Name_Len) :=
+ Name_Buffer (1 .. Name_Len);
+
+ B : Natural;
+
+ begin
+ -- This loop looks for multiple lines separated by
+ -- ASCII.LF and breaks them into continuation error
+ -- messages marked with the usual back slash.
+
+ B := 1;
+ for S in 2 .. Msg'Length - 1 loop
+ if Msg (S) = ASCII.LF then
+ Msg (S) := '?';
+ Error_Msg_N (Msg (B .. S), Arg1);
+ B := S;
+ Msg (B) := '\';
+ end if;
+ end loop;
+
+ Error_Msg_N (Msg (B .. Msg'Length), Arg1);
+ end;
+ end if;
+ end if;
+ end Compile_Time_Warning;
+
----------------------------
-- Complex_Representation --
----------------------------
when Pragma_Component_Alignment => Component_AlignmentP : declare
Args : Args_List (1 .. 2);
- Names : Name_List (1 .. 2) := (
+ Names : constant Name_List (1 .. 2) := (
Name_Form,
Name_Name);
Set_Component_Alignment (Base_Type (Typ), Atype);
end if;
end if;
-
end Component_AlignmentP;
----------------
when Pragma_Convention => Convention : declare
C : Convention_Id;
E : Entity_Id;
-
begin
Check_Ada_83_Warning;
Check_Arg_Count (2);
Process_Convention (C, E);
end Convention;
+ ---------------------------
+ -- Convention_Identifier --
+ ---------------------------
+
+ -- pragma Convention_Identifier ([Name =>] IDENTIFIER,
+ -- [Convention =>] convention_IDENTIFIER);
+
+ when Pragma_Convention_Identifier => Convention_Identifier : declare
+ Idnam : Name_Id;
+ Cname : Name_Id;
+
+ begin
+ GNAT_Pragma;
+ Check_Arg_Count (2);
+ Check_Optional_Identifier (Arg1, Name_Name);
+ Check_Optional_Identifier (Arg2, Name_Convention);
+ Check_Arg_Is_Identifier (Arg1);
+ Check_Arg_Is_Identifier (Arg1);
+ Idnam := Chars (Expression (Arg1));
+ Cname := Chars (Expression (Arg2));
+
+ if Is_Convention_Name (Cname) then
+ Record_Convention_Identifier
+ (Idnam, Get_Convention_Id (Cname));
+ else
+ Error_Pragma_Arg
+ ("second arg for % pragma must be convention", Arg2);
+ end if;
+ end Convention_Identifier;
+
---------------
-- CPP_Class --
---------------
-- Since a CPP type has no direct link to its associated tag
-- most tags checks cannot be performed
- Set_Suppress_Tag_Checks (Typ);
- Set_Suppress_Tag_Checks (Class_Wide_Type (Typ));
+ Set_Kill_Tag_Checks (Typ);
+ Set_Kill_Tag_Checks (Class_Wide_Type (Typ));
-- Get rid of the _tag component when there was one.
-- It is only useful for regular tagged types
if Expander_Active and then Typ = Root_Type (Typ) then
- Tag_C := Tag_Component (Typ);
+ Tag_C := First_Tag_Component (Typ);
C := First_Entity (Typ);
if C = Tag_C then
-- . DT_Position will be set at the freezing point
if Arg_Count = 1 then
- Set_DTC_Entity (Subp, Tag_Component (Typ));
+ Set_DTC_Entity (Subp, First_Tag_Component (Typ));
return;
end if;
Analyze_And_Resolve (Arg, Any_Integer);
if not Is_Static_Expression (Arg) then
- Error_Pragma_Arg
- ("third argument of pragma% must be a static expression",
+ Flag_Non_Static_Expr
+ ("third argument of pragma CPP_Virtual must be static!",
Arg3);
+ raise Pragma_Exit;
else
V := Expr_Value (Expression (Arg3));
-- If it is the first pragma Vtable, This becomes the default tag
elsif (not Is_Tag (DTC))
- and then DT_Entry_Count (Tag_Component (Typ)) = No_Uint
+ and then DT_Entry_Count (First_Tag_Component (Typ)) = No_Uint
then
- Set_Is_Tag (Tag_Component (Typ), False);
+ Set_Is_Tag (First_Tag_Component (Typ), False);
Set_Is_Tag (DTC, True);
Set_DT_Entry_Count (DTC, No_Uint);
end if;
Analyze_And_Resolve (Arg, Any_Integer);
if not Is_Static_Expression (Arg) then
- Error_Pragma_Arg
- ("entry count for pragma% must be a static expression", Arg3);
+ Flag_Non_Static_Expr
+ ("entry count for pragma CPP_Vtable must be a static " &
+ "expression!", Arg3);
+ raise Pragma_Exit;
else
V := Expr_Value (Expression (Arg3));
Set_DT_Entry_Count (DTC, V);
end if;
end if;
-
end CPP_Vtable;
-----------
when Pragma_Debug => Debug : begin
GNAT_Pragma;
- -- If assertions are enabled, and we are expanding code, then
- -- we rewrite the pragma with its corresponding procedure call
- -- and then analyze the call.
+ -- Rewrite into a conditional with a static condition
- if Assertions_Enabled and Expander_Active then
- Rewrite (N, Relocate_Node (Debug_Statement (N)));
- Analyze (N);
+ Rewrite (N, Make_Implicit_If_Statement (N,
+ Condition => New_Occurrence_Of (Boolean_Literals (
+ Assertions_Enabled and Expander_Active), Loc),
+ Then_Statements => New_List (
+ Relocate_Node (Debug_Statement (N)))));
+ Analyze (N);
+ end Debug;
- -- Otherwise we work a bit to get a tree that makes sense
- -- for ASIS purposes, namely a pragma with an analyzed
- -- argument that looks like a procedure call.
+ ---------------------
+ -- Detect_Blocking --
+ ---------------------
- else
- Expander_Mode_Save_And_Set (False);
- Rewrite (N, Relocate_Node (Debug_Statement (N)));
- Analyze (N);
- Rewrite (N,
- Make_Pragma (Loc,
- Chars => Name_Debug,
- Pragma_Argument_Associations =>
- New_List (Relocate_Node (N))));
- Expander_Mode_Restore;
- end if;
- end Debug;
+ -- pragma Detect_Blocking;
+
+ when Pragma_Detect_Blocking =>
+ GNAT_Pragma;
+ Check_Arg_Count (0);
+ Check_Valid_Configuration_Pragma;
+ Detect_Blocking := True;
-------------------
-- Discard_Names --
E : Entity_Id;
begin
- GNAT_Pragma;
Check_Ada_83_Warning;
-- Deal with configuration pragma case
-- (e.g. those added by use of Rtsfind). In Ada 95 mode, this
-- placement rule does not apply.
- if Ada_83 and then Comes_From_Source (N) then
+ if Ada_Version = Ada_83 and then Comes_From_Source (N) then
Citem := Next (N);
while Present (Citem) loop
then
Set_Elaborate_Present (Citem, True);
Set_Unit_Name (Expression (Arg), Name (Citem));
- Set_Suppress_Elaboration_Warnings (Entity (Name (Citem)));
+
+ -- With the pragma present, elaboration calls on
+ -- subprograms from the named unit need no further
+ -- checks, as long as the pragma appears in the current
+ -- compilation unit. If the pragma appears in some unit
+ -- in the context, there might still be a need for an
+ -- Elaborate_All_Desirable from the current compilation
+ -- to the the named unit, so we keep the check enabled.
+
+ if In_Extended_Main_Source_Unit (N) then
+ Set_Suppress_Elaboration_Warnings
+ (Entity (Name (Citem)));
+ end if;
exit Inner;
end if;
Next (Arg);
end loop Outer;
+
+ -- Give a warning if operating in static mode with -gnatwl
+ -- (elaboration warnings eanbled) switch set.
+
+ if Elab_Warnings and not Dynamic_Elaboration_Checks then
+ Error_Msg_N
+ ("?use of pragma Elaborate may not be safe", N);
+ Error_Msg_N
+ ("?use pragma Elaborate_All instead if possible", N);
+ end if;
end Elaborate;
-------------------
then
Set_Elaborate_All_Present (Citem, True);
Set_Unit_Name (Expression (Arg), Name (Citem));
- Set_Suppress_Elaboration_Warnings (Entity (Name (Citem)));
+
+ -- Suppress warnings and elaboration checks on the named
+ -- unit if the pragma is in the current compilation, as
+ -- for pragma Elaborate.
+
+ if In_Extended_Main_Source_Unit (N) then
+ Set_Suppress_Elaboration_Warnings
+ (Entity (Name (Citem)));
+ end if;
exit Innr;
end if;
end loop Innr;
if Citem = N then
+ Set_Error_Posted (N);
Error_Pragma_Arg
("argument of pragma% is not with'ed unit", Arg);
end if;
-- [,[Entity =>] IDENTIFIER |
-- SELECTED_COMPONENT |
-- STRING_LITERAL]
- -- [,[Parameter_Types =>] PARAMETER_TYPES]
- -- [,[Result_Type =>] result_SUBTYPE_MARK]);
+ -- [,]OVERLOADING_RESOLUTION);
- -- PARAMETER_TYPES ::=
- -- null
- -- (SUBTYPE_MARK, SUBTYPE_MARK, ...)
+ -- OVERLOADING_RESOLUTION ::= PARAMETER_AND_RESULT_TYPE_PROFILE |
+ -- SOURCE_LOCATION
+
+ -- PARAMETER_AND_RESULT_TYPE_PROFILE ::= PROCEDURE_PROFILE |
+ -- FUNCTION_PROFILE
+
+ -- PROCEDURE_PROFILE ::= Parameter_Types => PARAMETER_TYPES
+
+ -- FUNCTION_PROFILE ::= [Parameter_Types => PARAMETER_TYPES,]
+ -- Result_Type => result_SUBTYPE_NAME]
+
+ -- PARAMETER_TYPES ::= (SUBTYPE_NAME {, SUBTYPE_NAME})
+ -- SUBTYPE_NAME ::= STRING_LITERAL
+
+ -- SOURCE_LOCATION ::= Source_Location => SOURCE_TRACE
+ -- SOURCE_TRACE ::= STRING_LITERAL
- when Pragma_Eliminate => Eliminate : begin
+ when Pragma_Eliminate => Eliminate : declare
+ Args : Args_List (1 .. 5);
+ Names : constant Name_List (1 .. 5) := (
+ Name_Unit_Name,
+ Name_Entity,
+ Name_Parameter_Types,
+ Name_Result_Type,
+ Name_Source_Location);
+
+ Unit_Name : Node_Id renames Args (1);
+ Entity : Node_Id renames Args (2);
+ Parameter_Types : Node_Id renames Args (3);
+ Result_Type : Node_Id renames Args (4);
+ Source_Location : Node_Id renames Args (5);
+
+ begin
GNAT_Pragma;
- Check_Ada_83_Warning;
Check_Valid_Configuration_Pragma;
- Check_At_Least_N_Arguments (1);
- Check_At_Most_N_Arguments (4);
+ Gather_Associations (Names, Args);
+
+ if No (Unit_Name) then
+ Error_Pragma ("missing Unit_Name argument for pragma%");
+ end if;
- if Arg_Count = 3
- and then Chars (Arg3) = Name_Result_Type
+ if No (Entity)
+ and then (Present (Parameter_Types)
+ or else
+ Present (Result_Type)
+ or else
+ Present (Source_Location))
then
- Arg4 := Arg3;
- Arg3 := Empty;
+ Error_Pragma ("missing Entity argument for pragma%");
+ end if;
- else
- Check_Optional_Identifier (Arg1, "unit_name");
- Check_Optional_Identifier (Arg2, Name_Entity);
- Check_Optional_Identifier (Arg3, Name_Parameter_Types);
- Check_Optional_Identifier (Arg4, Name_Result_Type);
+ if (Present (Parameter_Types)
+ or else
+ Present (Result_Type))
+ and then
+ Present (Source_Location)
+ then
+ Error_Pragma
+ ("parameter profile and source location can not " &
+ "be used together in pragma%");
end if;
- Process_Eliminate_Pragma (Arg1, Arg2, Arg3, Arg4);
+ Process_Eliminate_Pragma
+ (N,
+ Unit_Name,
+ Entity,
+ Parameter_Types,
+ Result_Type,
+ Source_Location);
end Eliminate;
+ -------------------------
+ -- Explicit_Overriding --
+ -------------------------
+
+ when Pragma_Explicit_Overriding =>
+ Check_Valid_Configuration_Pragma;
+ Check_Arg_Count (0);
+ Explicit_Overriding := True;
+
------------
-- Export --
------------
when Pragma_Export_Exception => Export_Exception : declare
Args : Args_List (1 .. 4);
- Names : Name_List (1 .. 4) := (
+ Names : constant Name_List (1 .. 4) := (
Name_Internal,
Name_External,
Name_Form,
Code : Node_Id renames Args (4);
begin
- GNAT_Pragma;
-
if Inside_A_Generic then
Error_Pragma ("pragma% cannot be used for generic entities");
end if;
if not Is_VMS_Exception (Entity (Internal)) then
Set_Exported (Entity (Internal), Internal);
end if;
-
end Export_Exception;
---------------------
-- [Internal =>] LOCAL_NAME,
-- [, [External =>] EXTERNAL_SYMBOL,]
-- [, [Parameter_Types =>] (PARAMETER_TYPES)]
- -- [, [Result_Type =>] SUBTYPE_MARK]
+ -- [, [Result_Type =>] TYPE_DESIGNATOR]
-- [, [Mechanism =>] MECHANISM]
-- [, [Result_Mechanism =>] MECHANISM_NAME]);
+ -- EXTERNAL_SYMBOL ::=
+ -- IDENTIFIER
+ -- | static_string_EXPRESSION
+
+ -- PARAMETER_TYPES ::=
+ -- null
+ -- | TYPE_DESIGNATOR @{, TYPE_DESIGNATOR@}
+
+ -- TYPE_DESIGNATOR ::=
+ -- subtype_NAME
+ -- | subtype_Name ' Access
+
+ -- MECHANISM ::=
+ -- MECHANISM_NAME
+ -- | (MECHANISM_ASSOCIATION @{, MECHANISM_ASSOCIATION@})
+
+ -- MECHANISM_ASSOCIATION ::=
+ -- [formal_parameter_NAME =>] MECHANISM_NAME
+
+ -- MECHANISM_NAME ::=
+ -- Value
+ -- | Reference
+ -- | Descriptor [([Class =>] CLASS_NAME)]
+
+ -- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
+
when Pragma_Export_Function => Export_Function : declare
Args : Args_List (1 .. 6);
- Names : Name_List (1 .. 6) := (
+ Names : constant Name_List (1 .. 6) := (
Name_Internal,
Name_External,
Name_Parameter_Types,
-- [, [External =>] EXTERNAL_SYMBOL]
-- [, [Size =>] EXTERNAL_SYMBOL]);
+ -- EXTERNAL_SYMBOL ::=
+ -- IDENTIFIER
+ -- | static_string_EXPRESSION
+
+ -- PARAMETER_TYPES ::=
+ -- null
+ -- | TYPE_DESIGNATOR @{, TYPE_DESIGNATOR@}
+
+ -- TYPE_DESIGNATOR ::=
+ -- subtype_NAME
+ -- | subtype_Name ' Access
+
+ -- MECHANISM ::=
+ -- MECHANISM_NAME
+ -- | (MECHANISM_ASSOCIATION @{, MECHANISM_ASSOCIATION@})
+
+ -- MECHANISM_ASSOCIATION ::=
+ -- [formal_parameter_NAME =>] MECHANISM_NAME
+
+ -- MECHANISM_NAME ::=
+ -- Value
+ -- | Reference
+ -- | Descriptor [([Class =>] CLASS_NAME)]
+
+ -- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
+
when Pragma_Export_Object => Export_Object : declare
Args : Args_List (1 .. 3);
- Names : Name_List (1 .. 3) := (
+ Names : constant Name_List (1 .. 3) := (
Name_Internal,
Name_External,
Name_Size);
-- [, [Parameter_Types =>] (PARAMETER_TYPES)]
-- [, [Mechanism =>] MECHANISM]);
+ -- EXTERNAL_SYMBOL ::=
+ -- IDENTIFIER
+ -- | static_string_EXPRESSION
+
+ -- PARAMETER_TYPES ::=
+ -- null
+ -- | TYPE_DESIGNATOR @{, TYPE_DESIGNATOR@}
+
+ -- TYPE_DESIGNATOR ::=
+ -- subtype_NAME
+ -- | subtype_Name ' Access
+
+ -- MECHANISM ::=
+ -- MECHANISM_NAME
+ -- | (MECHANISM_ASSOCIATION @{, MECHANISM_ASSOCIATION@})
+
+ -- MECHANISM_ASSOCIATION ::=
+ -- [formal_parameter_NAME =>] MECHANISM_NAME
+
+ -- MECHANISM_NAME ::=
+ -- Value
+ -- | Reference
+ -- | Descriptor [([Class =>] CLASS_NAME)]
+
+ -- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
+
when Pragma_Export_Procedure => Export_Procedure : declare
Args : Args_List (1 .. 4);
- Names : Name_List (1 .. 4) := (
+ Names : constant Name_List (1 .. 4) := (
Name_Internal,
Name_External,
Name_Parameter_Types,
Arg_Mechanism => Mechanism);
end Export_Procedure;
+ ------------------
+ -- Export_Value --
+ ------------------
+
+ -- pragma Export_Value (
+ -- [Value =>] static_integer_EXPRESSION,
+ -- [Link_Name =>] static_string_EXPRESSION);
+
+ when Pragma_Export_Value =>
+ GNAT_Pragma;
+ Check_Arg_Count (2);
+
+ Check_Optional_Identifier (Arg1, Name_Value);
+ Check_Arg_Is_Static_Expression (Arg1, Any_Integer);
+
+ Check_Optional_Identifier (Arg2, Name_Link_Name);
+ Check_Arg_Is_Static_Expression (Arg2, Standard_String);
+
-----------------------------
-- Export_Valued_Procedure --
-----------------------------
-- [, [Parameter_Types =>] (PARAMETER_TYPES)]
-- [, [Mechanism =>] MECHANISM]);
+ -- EXTERNAL_SYMBOL ::=
+ -- IDENTIFIER
+ -- | static_string_EXPRESSION
+
+ -- PARAMETER_TYPES ::=
+ -- null
+ -- | TYPE_DESIGNATOR @{, TYPE_DESIGNATOR@}
+
+ -- TYPE_DESIGNATOR ::=
+ -- subtype_NAME
+ -- | subtype_Name ' Access
+
+ -- MECHANISM ::=
+ -- MECHANISM_NAME
+ -- | (MECHANISM_ASSOCIATION @{, MECHANISM_ASSOCIATION@})
+
+ -- MECHANISM_ASSOCIATION ::=
+ -- [formal_parameter_NAME =>] MECHANISM_NAME
+
+ -- MECHANISM_NAME ::=
+ -- Value
+ -- | Reference
+ -- | Descriptor [([Class =>] CLASS_NAME)]
+
+ -- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
+
when Pragma_Export_Valued_Procedure =>
Export_Valued_Procedure : declare
Args : Args_List (1 .. 4);
- Names : Name_List (1 .. 4) := (
+ Names : constant Name_List (1 .. 4) := (
Name_Internal,
Name_External,
Name_Parameter_Types,
else
System_Extend_Pragma_Arg := Arg1;
+
+ if not GNAT_Mode then
+ System_Extend_Unit := Arg1;
+ end if;
end if;
else
Error_Pragma ("incorrect name for pragma%, must be Aux_xxx");
Check_Arg_Count (1);
Check_No_Identifiers;
Check_Arg_Is_One_Of (Arg1, Name_On, Name_Off);
- Extensions_Allowed := (Chars (Expression (Arg1)) = Name_On);
+
+ if Chars (Expression (Arg1)) = Name_On then
+ Extensions_Allowed := True;
+ Ada_Version := Ada_Version_Type'Last;
+ else
+ Extensions_Allowed := False;
+ Ada_Version := Ada_Version_Type'Min (Ada_Version, Ada_95);
+ end if;
--------------
-- External --
-- UPPERCASE | LOWERCASE
-- [, AS_IS | UPPERCASE | LOWERCASE]);
- when Pragma_External_Name_Casing =>
-
- External_Name_Casing : declare
+ when Pragma_External_Name_Casing => External_Name_Casing : declare
begin
GNAT_Pragma;
Check_No_Identifiers;
when others =>
null;
end case;
-
end External_Name_Casing;
---------------------------
-- pragma Finalize_Storage_Only (first_subtype_LOCAL_NAME);
when Pragma_Finalize_Storage_Only => Finalize_Storage : declare
- Assoc : Node_Id := Arg1;
- Type_Id : Node_Id := Expression (Assoc);
+ Assoc : constant Node_Id := Arg1;
+ Type_Id : constant Node_Id := Expression (Assoc);
Typ : Entity_Id;
begin
Error_Pragma ("duplicate pragma%, only one allowed");
elsif not Rep_Item_Too_Late (Typ, N) then
- Set_Finalize_Storage_Only (Typ, True);
+ Set_Finalize_Storage_Only (Base_Type (Typ), True);
end if;
end Finalize_Storage;
end case;
end if;
end if;
-
end Float_Representation;
-----------
Str := Expr_Value_S (Expression (Arg1));
- -- For pragma Ident, preserve DEC compatibility by limiting
- -- the length to 31 characters.
-
- if Prag_Id = Pragma_Ident
- and then String_Length (Strval (Str)) > 31
- then
- Error_Pragma_Arg
- ("argument for pragma% is too long, maximum is 31", Arg1);
- end if;
-
declare
CS : Node_Id;
GP : Node_Id;
-- For Comment, we concatenate the string, unless we
-- want to preserve the tree structure for ASIS.
- elsif not Tree_Output then
+ elsif not ASIS_Mode then
Start_String (Strval (CS));
Store_String_Char (' ');
Store_String_Chars (Strval (Str));
when Pragma_Import_Exception => Import_Exception : declare
Args : Args_List (1 .. 4);
- Names : Name_List (1 .. 4) := (
+ Names : constant Name_List (1 .. 4) := (
Name_Internal,
Name_External,
Name_Form,
Code : Node_Id renames Args (4);
begin
- GNAT_Pragma;
Gather_Associations (Names, Args);
if Present (External) and then Present (Code) then
if not Is_VMS_Exception (Entity (Internal)) then
Set_Imported (Entity (Internal));
end if;
-
end Import_Exception;
---------------------
-- [, [Result_Mechanism =>] MECHANISM_NAME]
-- [, [First_Optional_Parameter =>] IDENTIFIER]);
+ -- EXTERNAL_SYMBOL ::=
+ -- IDENTIFIER
+ -- | static_string_EXPRESSION
+
+ -- PARAMETER_TYPES ::=
+ -- null
+ -- | TYPE_DESIGNATOR @{, TYPE_DESIGNATOR@}
+
+ -- TYPE_DESIGNATOR ::=
+ -- subtype_NAME
+ -- | subtype_Name ' Access
+
+ -- MECHANISM ::=
+ -- MECHANISM_NAME
+ -- | (MECHANISM_ASSOCIATION @{, MECHANISM_ASSOCIATION@})
+
+ -- MECHANISM_ASSOCIATION ::=
+ -- [formal_parameter_NAME =>] MECHANISM_NAME
+
+ -- MECHANISM_NAME ::=
+ -- Value
+ -- | Reference
+ -- | Descriptor [([Class =>] CLASS_NAME)]
+
+ -- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
+
when Pragma_Import_Function => Import_Function : declare
Args : Args_List (1 .. 7);
- Names : Name_List (1 .. 7) := (
+ Names : constant Name_List (1 .. 7) := (
Name_Internal,
Name_External,
Name_Parameter_Types,
-- [, [External =>] EXTERNAL_SYMBOL]
-- [, [Size =>] EXTERNAL_SYMBOL]);
+ -- EXTERNAL_SYMBOL ::=
+ -- IDENTIFIER
+ -- | static_string_EXPRESSION
+
when Pragma_Import_Object => Import_Object : declare
Args : Args_List (1 .. 3);
- Names : Name_List (1 .. 3) := (
+ Names : constant Name_List (1 .. 3) := (
Name_Internal,
Name_External,
Name_Size);
-- [, [Mechanism =>] MECHANISM]
-- [, [First_Optional_Parameter =>] IDENTIFIER]);
+ -- EXTERNAL_SYMBOL ::=
+ -- IDENTIFIER
+ -- | static_string_EXPRESSION
+
+ -- PARAMETER_TYPES ::=
+ -- null
+ -- | TYPE_DESIGNATOR @{, TYPE_DESIGNATOR@}
+
+ -- TYPE_DESIGNATOR ::=
+ -- subtype_NAME
+ -- | subtype_Name ' Access
+
+ -- MECHANISM ::=
+ -- MECHANISM_NAME
+ -- | (MECHANISM_ASSOCIATION @{, MECHANISM_ASSOCIATION@})
+
+ -- MECHANISM_ASSOCIATION ::=
+ -- [formal_parameter_NAME =>] MECHANISM_NAME
+
+ -- MECHANISM_NAME ::=
+ -- Value
+ -- | Reference
+ -- | Descriptor [([Class =>] CLASS_NAME)]
+
+ -- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
+
when Pragma_Import_Procedure => Import_Procedure : declare
Args : Args_List (1 .. 5);
- Names : Name_List (1 .. 5) := (
+ Names : constant Name_List (1 .. 5) := (
Name_Internal,
Name_External,
Name_Parameter_Types,
-- [, [Mechanism =>] MECHANISM]
-- [, [First_Optional_Parameter =>] IDENTIFIER]);
+ -- EXTERNAL_SYMBOL ::=
+ -- IDENTIFIER
+ -- | static_string_EXPRESSION
+
+ -- PARAMETER_TYPES ::=
+ -- null
+ -- | TYPE_DESIGNATOR @{, TYPE_DESIGNATOR@}
+
+ -- TYPE_DESIGNATOR ::=
+ -- subtype_NAME
+ -- | subtype_Name ' Access
+
+ -- MECHANISM ::=
+ -- MECHANISM_NAME
+ -- | (MECHANISM_ASSOCIATION @{, MECHANISM_ASSOCIATION@})
+
+ -- MECHANISM_ASSOCIATION ::=
+ -- [formal_parameter_NAME =>] MECHANISM_NAME
+
+ -- MECHANISM_NAME ::=
+ -- Value
+ -- | Reference
+ -- | Descriptor [([Class =>] CLASS_NAME)]
+
+ -- CLASS_NAME ::= ubs | ubsb | uba | s | sb | a | nca
+
when Pragma_Import_Valued_Procedure =>
Import_Valued_Procedure : declare
Args : Args_List (1 .. 5);
- Names : Name_List (1 .. 5) := (
+ Names : constant Name_List (1 .. 5) := (
Name_Internal,
Name_External,
Name_Parameter_Types,
GNAT_Pragma;
Check_Arg_Count (0);
Check_Valid_Configuration_Pragma;
- Init_Or_Norm_Scalars := True;
- Initialize_Scalars := True;
+ Check_Restriction (No_Initialize_Scalars, N);
+
+ if not Restriction_Active (No_Initialize_Scalars) then
+ Init_Or_Norm_Scalars := True;
+ Initialize_Scalars := True;
+ end if;
------------
-- Inline --
-- Pragma is active if inlining option is active
- if Inline_Active then
- Process_Inline (True);
-
- -- Pragma is active in a predefined file in no run time mode
-
- elsif No_Run_Time
- and then
- Is_Predefined_File_Name (Unit_File_Name (Current_Sem_Unit))
- then
- Process_Inline (True);
-
- else
- Process_Inline (False);
- end if;
+ Process_Inline (Inline_Active);
-------------------
-- Inline_Always --
Check_Ada_83_Warning;
Check_Arg_Count (1);
Check_No_Identifiers;
- Check_Interrupt_Or_Attach_Handler;
- Process_Interrupt_Or_Attach_Handler;
+
+ if No_Run_Time_Mode then
+ Error_Msg_CRT ("Interrupt_Handler pragma", N);
+ else
+ Check_Interrupt_Or_Attach_Handler;
+ Process_Interrupt_Or_Attach_Handler;
+ end if;
------------------------
-- Interrupt_Priority --
Check_Arg_Count (1);
Check_No_Identifiers;
- -- Set In_Default_Expression for per-object case???
+ -- The expression must be analyzed in the special manner
+ -- described in "Handling of Default and Per-Object
+ -- Expressions" in sem.ads.
- Analyze_And_Resolve (Arg, Standard_Integer);
- if Expander_Active then
- Rewrite (Arg,
- Convert_To (RTE (RE_Interrupt_Priority), Arg));
- end if;
+ Analyze_Per_Use_Expression (Arg, RTE (RE_Interrupt_Priority));
end if;
if Nkind (P) /= N_Task_Definition
end if;
end Interrupt_Priority;
+ ---------------------
+ -- Interrupt_State --
+ ---------------------
+
+ -- pragma Interrupt_State (
+ -- [Name =>] INTERRUPT_ID,
+ -- [State =>] INTERRUPT_STATE);
+
+ -- INTERRUPT_ID => IDENTIFIER | static_integer_EXPRESSION
+ -- INTERRUPT_STATE => System | Runtime | User
+
+ -- Note: if the interrupt id is given as an identifier, then
+ -- it must be one of the identifiers in Ada.Interrupts.Names.
+ -- Otherwise it is given as a static integer expression which
+ -- must be in the range of Ada.Interrupts.Interrupt_ID.
+
+ when Pragma_Interrupt_State => Interrupt_State : declare
+
+ Int_Id : constant Entity_Id := RTE (RE_Interrupt_ID);
+ -- This is the entity Ada.Interrupts.Interrupt_ID;
+
+ State_Type : Character;
+ -- Set to 's'/'r'/'u' for System/Runtime/User
+
+ IST_Num : Pos;
+ -- Index to entry in Interrupt_States table
+
+ Int_Val : Uint;
+ -- Value of interrupt
+
+ Arg1X : constant Node_Id := Get_Pragma_Arg (Arg1);
+ -- The first argument to the pragma
+
+ Int_Ent : Entity_Id;
+ -- Interrupt entity in Ada.Interrupts.Names
+
+ begin
+ GNAT_Pragma;
+ Check_Arg_Count (2);
+
+ Check_Optional_Identifier (Arg1, Name_Name);
+ Check_Optional_Identifier (Arg2, "state");
+ Check_Arg_Is_Identifier (Arg2);
+
+ -- First argument is identifier
+
+ if Nkind (Arg1X) = N_Identifier then
+
+ -- Search list of names in Ada.Interrupts.Names
+
+ Int_Ent := First_Entity (RTE (RE_Names));
+ loop
+ if No (Int_Ent) then
+ Error_Pragma_Arg ("invalid interrupt name", Arg1);
+
+ elsif Chars (Int_Ent) = Chars (Arg1X) then
+ Int_Val := Expr_Value (Constant_Value (Int_Ent));
+ exit;
+ end if;
+
+ Next_Entity (Int_Ent);
+ end loop;
+
+ -- First argument is not an identifier, so it must be a
+ -- static expression of type Ada.Interrupts.Interrupt_ID.
+
+ else
+ Check_Arg_Is_Static_Expression (Arg1, Any_Integer);
+ Int_Val := Expr_Value (Arg1X);
+
+ if Int_Val < Expr_Value (Type_Low_Bound (Int_Id))
+ or else
+ Int_Val > Expr_Value (Type_High_Bound (Int_Id))
+ then
+ Error_Pragma_Arg
+ ("value not in range of type " &
+ """Ada.Interrupts.Interrupt_'I'D""", Arg1);
+ end if;
+ end if;
+
+ -- Check OK state
+
+ case Chars (Get_Pragma_Arg (Arg2)) is
+ when Name_Runtime => State_Type := 'r';
+ when Name_System => State_Type := 's';
+ when Name_User => State_Type := 'u';
+
+ when others =>
+ Error_Pragma_Arg ("invalid interrupt state", Arg2);
+ end case;
+
+ -- Check if entry is already stored
+
+ IST_Num := Interrupt_States.First;
+ loop
+ -- If entry not found, add it
+
+ if IST_Num > Interrupt_States.Last then
+ Interrupt_States.Append
+ ((Interrupt_Number => UI_To_Int (Int_Val),
+ Interrupt_State => State_Type,
+ Pragma_Loc => Loc));
+ exit;
+
+ -- Case of entry for the same entry
+
+ elsif Int_Val = Interrupt_States.Table (IST_Num).
+ Interrupt_Number
+ then
+ -- If state matches, done, no need to make redundant entry
+
+ exit when
+ State_Type = Interrupt_States.Table (IST_Num).
+ Interrupt_State;
+
+ -- Otherwise if state does not match, error
+
+ Error_Msg_Sloc :=
+ Interrupt_States.Table (IST_Num).Pragma_Loc;
+ Error_Pragma_Arg
+ ("state conflicts with that given at #", Arg2);
+ exit;
+ end if;
+
+ IST_Num := IST_Num + 1;
+ end loop;
+ end Interrupt_State;
+
----------------------
-- Java_Constructor --
----------------------
end if;
end Java_Interface;
+ ----------------
+ -- Keep_Names --
+ ----------------
+
+ -- pragma Keep_Names ([On => ] local_NAME);
+
+ when Pragma_Keep_Names => Keep_Names : declare
+ Arg : Node_Id;
+
+ begin
+ GNAT_Pragma;
+ Check_Arg_Count (1);
+ Check_Optional_Identifier (Arg1, Name_On);
+ Check_Arg_Is_Local_Name (Arg1);
+
+ Arg := Expression (Arg1);
+ Analyze (Arg);
+
+ if Etype (Arg) = Any_Type then
+ return;
+ end if;
+
+ if not Is_Entity_Name (Arg)
+ or else Ekind (Entity (Arg)) /= E_Enumeration_Type
+ then
+ Error_Pragma_Arg
+ ("pragma% requires a local enumeration type", Arg1);
+ end if;
+
+ Set_Discard_Names (Entity (Arg), False);
+ end Keep_Names;
+
-------------
-- License --
-------------
while Present (Arg) loop
Check_Arg_Is_Static_Expression (Arg, Standard_String);
- -- Store argument, converting sequences of spaces to
- -- a single null character (this is the difference in
- -- processing between Link_With, and Linker_Options).
+ -- Store argument, converting sequences of spaces
+ -- to a single null character (this is one of the
+ -- differences in processing between Link_With
+ -- and Linker_Options).
declare
C : constant Char_Code := Get_Char_Code (' ');
S : constant String_Id :=
Strval (Expr_Value_S (Expression (Arg)));
-
+ L : constant Nat := String_Length (S);
F : Nat := 1;
- L : Nat := String_Length (S);
procedure Skip_Spaces;
-- Advance F past any spaces
-- pragma Linker_Options (string_EXPRESSION {, string_EXPRESSION});
- -- Note: the use of multiple arguments is a GNAT extension
-
when Pragma_Linker_Options => Linker_Options : declare
Arg : Node_Id;
begin
+ Check_Ada_83_Warning;
+ Check_No_Identifiers;
+ Check_Arg_Count (1);
+ Check_Is_In_Decl_Part_Or_Package_Spec;
+
if Operating_Mode = Generate_Code
and then In_Extended_Main_Source_Unit (N)
then
- Check_Ada_83_Warning;
- Check_At_Least_N_Arguments (1);
- Check_No_Identifiers;
- Check_Is_In_Decl_Part_Or_Package_Spec;
Check_Arg_Is_Static_Expression (Arg1, Standard_String);
Start_String (Strval (Expr_Value_S (Expression (Arg1))));
then
Error_Msg_Sloc := Locking_Policy_Sloc;
Error_Pragma ("locking policy incompatible with policy#");
+
+ -- Set new policy, but always preserve System_Location since
+ -- we like the error message with the run time name.
+
else
Locking_Policy := LP;
- Locking_Policy_Sloc := Loc;
+
+ if Locking_Policy_Sloc /= System_Location then
+ Locking_Policy_Sloc := Loc;
+ end if;
end if;
end;
when Pragma_Main => Main : declare
Args : Args_List (1 .. 3);
- Names : Name_List (1 .. 3) := (
+ Names : constant Name_List (1 .. 3) := (
Name_Stack_Size,
Name_Task_Stack_Size_Default,
Name_Time_Slicing_Enabled);
when Pragma_Main_Storage => Main_Storage : declare
Args : Args_List (1 .. 2);
- Names : Name_List (1 .. 2) := (
+ Names : constant Name_List (1 .. 2) := (
Name_Working_Storage,
Name_Top_Guard);
Next (Nod);
end loop;
-
end Main_Storage;
-----------------
-- pragma No_Return (procedure_LOCAL_NAME);
- when Pragma_No_Return => declare
+ when Pragma_No_Return => No_Return : declare
Id : Node_Id;
E : Entity_Id;
Found : Boolean;
if not Found then
Error_Pragma ("no procedures found for pragma%");
end if;
- end;
+ end No_Return;
+
+ ------------------------
+ -- No_Strict_Aliasing --
+ ------------------------
+
+ when Pragma_No_Strict_Aliasing => No_Strict_Alias : declare
+ E_Id : Entity_Id;
+
+ begin
+ GNAT_Pragma;
+ Check_At_Most_N_Arguments (1);
+
+ if Arg_Count = 0 then
+ Check_Valid_Configuration_Pragma;
+ Opt.No_Strict_Aliasing := True;
+
+ else
+ Check_Optional_Identifier (Arg2, Name_Entity);
+ Check_Arg_Is_Local_Name (Arg1);
+ E_Id := Entity (Expression (Arg1));
+
+ if E_Id = Any_Type then
+ return;
+ elsif No (E_Id) or else not Is_Access_Type (E_Id) then
+ Error_Pragma_Arg ("pragma% requires access type", Arg1);
+ end if;
+
+ Set_No_Strict_Aliasing (Implementation_Base_Type (E_Id));
+ end if;
+ end No_Strict_Alias;
+
+ -----------------
+ -- Obsolescent --
+ -----------------
+
+ -- pragma Obsolescent [(static_string_EXPRESSION)];
+
+ when Pragma_Obsolescent => Obsolescent : declare
+ Subp : Node_Or_Entity_Id;
+ S : String_Id;
+
+ begin
+ GNAT_Pragma;
+ Check_At_Most_N_Arguments (1);
+ Check_No_Identifiers;
+
+ -- Check OK placement
+
+ -- First possibility is within a declarative region, where the
+ -- pragma immediately follows a subprogram declaration.
+
+ if Present (Prev (N)) then
+ Subp := Prev (N);
+
+ -- Second possibility, stand alone subprogram declaration with the
+ -- pragma immediately following the declaration.
+
+ elsif No (Prev (N))
+ and then Nkind (Parent (N)) = N_Compilation_Unit_Aux
+ then
+ Subp := Unit (Parent (Parent (N)));
+
+ -- Any other possibility is a misplacement
+
+ else
+ Subp := Empty;
+ end if;
+
+ -- Check correct placement
+
+ if Nkind (Subp) /= N_Subprogram_Declaration then
+ Error_Pragma
+ ("pragma% misplaced, must immediately " &
+ "follow subprogram spec");
+
+ -- If OK placement, set flag and acquire argument
+
+ else
+ Subp := Defining_Entity (Subp);
+ Set_Is_Obsolescent (Subp);
+
+ if Arg_Count = 1 then
+ Check_Arg_Is_Static_Expression (Arg1, Standard_String);
+ S := Strval (Expression (Arg1));
+
+ for J in 1 .. String_Length (S) loop
+ if not In_Character_Range (Get_String_Char (S, J)) then
+ Error_Pragma_Arg
+ ("pragma% argument does not allow wide characters",
+ Arg1);
+ end if;
+ end loop;
+
+ Set_Obsolescent_Warning (Subp, Expression (Arg1));
+ end if;
+ end if;
+ end Obsolescent;
-----------------
-- No_Run_Time --
-- pragma No_Run_Time
+ -- Note: this pragma is retained for backwards compatibiltiy.
+ -- See body of Rtsfind for full details on its handling.
+
when Pragma_No_Run_Time =>
GNAT_Pragma;
Check_Valid_Configuration_Pragma;
Check_Arg_Count (0);
- Set_No_Run_Time_Mode;
+
+ No_Run_Time_Mode := True;
+ Configurable_Run_Time_Mode := True;
+
+ declare
+ Word32 : constant Boolean := Ttypes.System_Word_Size = 32;
+ begin
+ if Word32 then
+ Duration_32_Bits_On_Target := True;
+ end if;
+ end;
+
+ Set_Restriction (No_Finalization, N);
+ Set_Restriction (No_Exception_Handlers, N);
+ Set_Restriction (Max_Tasks, N, 0);
+ Set_Restriction (No_Tasking, N);
-----------------------
-- Normalize_Scalars --
Check_Arg_Count (1);
Check_Arg_Is_One_Of (Arg1, Name_Time, Name_Space, Name_Off);
+ -------------------------
+ -- Optional_Overriding --
+ -------------------------
+
+ -- These pragmas are treated as part of the previous subprogram
+ -- declaration, and analyzed immediately after it (see sem_ch6,
+ -- Check_Overriding_Operation). If the pragma has not been analyzed
+ -- yet, it appears in the wrong place.
+
+ when Pragma_Optional_Overriding =>
+ Error_Msg_N ("pragma must appear immediately after subprogram", N);
+
----------
-- Pack --
----------
-- pragma Pack (first_subtype_LOCAL_NAME);
when Pragma_Pack => Pack : declare
- Assoc : Node_Id := Arg1;
+ Assoc : constant Node_Id := Arg1;
Type_Id : Node_Id;
Typ : Entity_Id;
-- till that point (i.e. right now it may be unfrozen).
elsif Is_Array_Type (Typ) then
-
if Has_Aliased_Components (Base_Type (Typ)) then
Error_Pragma
("pragma% ignored, cannot pack aliased components?");
- elsif Has_Atomic_Components (Typ) then
+ elsif Has_Atomic_Components (Typ)
+ or else Is_Atomic (Component_Type (Typ))
+ then
Error_Pragma
("?pragma% ignored, cannot pack atomic components");
-- Record type. For record types, the pack is always effective
- else -- Is_Record_Type (Typ)
+ else pragma Assert (Is_Record_Type (Typ));
if not Rep_Item_Too_Late (Typ, N) then
Set_Has_Pragma_Pack (Base_Type (Typ));
Set_Is_Packed (Base_Type (Typ));
Check_Arg_Is_One_Of (Arg1, Name_On, Name_Off);
Polling_Required := (Chars (Expression (Arg1)) = Name_On);
+ ---------------------
+ -- Persistent_Data --
+ ---------------------
+
+ when Pragma_Persistent_Data => declare
+ Ent : Entity_Id;
+
+ begin
+ -- Register the pragma as applying to the compilation unit.
+ -- Individual Persistent_Object pragmas for relevant objects
+ -- are generated the end of the compilation.
+
+ GNAT_Pragma;
+ Check_Valid_Configuration_Pragma;
+ Check_Arg_Count (0);
+ Ent := Find_Lib_Unit_Name;
+ Set_Is_Preelaborated (Ent);
+ end;
+
+ -----------------------
+ -- Persistent_Object --
+ -----------------------
+
+ when Pragma_Persistent_Object => declare
+ Decl : Node_Id;
+ Ent : Entity_Id;
+ MA : Node_Id;
+ Str : String_Id;
+
+ begin
+ GNAT_Pragma;
+ Check_Arg_Count (1);
+ Check_Arg_Is_Library_Level_Local_Name (Arg1);
+
+ if not Is_Entity_Name (Expression (Arg1))
+ or else
+ (Ekind (Entity (Expression (Arg1))) /= E_Variable
+ and then Ekind (Entity (Expression (Arg1))) /= E_Constant)
+ then
+ Error_Pragma_Arg ("pragma only applies to objects", Arg1);
+ end if;
+
+ Ent := Entity (Expression (Arg1));
+ Decl := Parent (Ent);
+
+ if Nkind (Decl) /= N_Object_Declaration then
+ return;
+ end if;
+
+ -- Placement of the object depends on whether there is
+ -- an initial value or none. If the No_Initialization flag
+ -- is set, the initialization has been transformed into
+ -- assignments, which is disallowed elaboration code.
+
+ if No_Initialization (Decl) then
+ Error_Msg_N
+ ("initialization for persistent object"
+ & "must be static expression", Decl);
+ return;
+ end if;
+
+ if No (Expression (Decl)) then
+ Start_String;
+ Store_String_Chars ("section ("".persistent.bss"")");
+ Str := End_String;
+
+ else
+ if not Is_OK_Static_Expression (Expression (Decl)) then
+ Flag_Non_Static_Expr
+ ("initialization for persistent object"
+ & "must be static expression!", Expression (Decl));
+ return;
+ end if;
+
+ Start_String;
+ Store_String_Chars ("section ("".persistent.data"")");
+ Str := End_String;
+ end if;
+
+ MA :=
+ Make_Pragma
+ (Sloc (N),
+ Name_Machine_Attribute,
+ New_List
+ (Make_Pragma_Argument_Association
+ (Sloc => Sloc (Arg1),
+ Expression => New_Occurrence_Of (Ent, Sloc (Ent))),
+ Make_Pragma_Argument_Association
+ (Sloc => Sloc (Arg1),
+ Expression =>
+ Make_String_Literal
+ (Sloc => Sloc (Arg1),
+ Strval => Str))));
+
+ Insert_After (N, MA);
+ Analyze (MA);
+ Set_Has_Gigi_Rep_Item (Ent);
+ end;
+
------------------
-- Preelaborate --
------------------
-- Set the flag Is_Preelaborated of program unit name entity
when Pragma_Preelaborate => Preelaborate : declare
+ Pa : constant Node_Id := Parent (N);
+ Pk : constant Node_Kind := Nkind (Pa);
Ent : Entity_Id;
- Pa : Node_Id := Parent (N);
- Pk : Node_Kind := Nkind (Pa);
begin
Check_Ada_83_Warning;
Check_No_Identifiers;
Check_Arg_Count (1);
- Arg := Expression (Arg1);
- Analyze_And_Resolve (Arg, Standard_Integer);
-
- if not Is_Static_Expression (Arg) then
- Check_Restriction (Static_Priorities, Arg);
- end if;
-
-- Subprogram case
if Nkind (P) = N_Subprogram_Body then
Check_In_Main_Program;
+ Arg := Expression (Arg1);
+ Analyze_And_Resolve (Arg, Standard_Integer);
+
-- Must be static
if not Is_Static_Expression (Arg) then
- Error_Pragma_Arg
- ("main subprogram priority is not static", Arg1);
+ Flag_Non_Static_Expr
+ ("main subprogram priority is not static!", Arg);
+ raise Pragma_Exit;
-- If constraint error, then we already signalled an error
or else
Nkind (P) = N_Task_Definition
then
- if Expander_Active then
- Rewrite (Arg,
- Convert_To (RTE (RE_Any_Priority), Arg));
+ Arg := Expression (Arg1);
+
+ -- The expression must be analyzed in the special manner
+ -- described in "Handling of Default and Per-Object
+ -- Expressions" in sem.ads.
+
+ Analyze_Per_Use_Expression (Arg, Standard_Integer);
+
+ if not Is_Static_Expression (Arg) then
+ Check_Restriction (Static_Priorities, Arg);
end if;
-- Anything else is incorrect
-- exp_ch9 should use this ???
end if;
end if;
-
end Priority;
+ -------------
+ -- Profile --
+ -------------
+
+ -- pragma Profile (profile_IDENTIFIER);
+
+ -- profile_IDENTIFIER => Protected | Ravenscar
+
+ when Pragma_Profile =>
+ Check_Arg_Count (1);
+ Check_Valid_Configuration_Pragma;
+ Check_No_Identifiers;
+
+ 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 => False);
+ else
+ Error_Pragma_Arg ("& is not a valid profile", Argx);
+ end if;
+ end;
+
+ ----------------------
+ -- Profile_Warnings --
+ ----------------------
+
+ -- pragma Profile_Warnings (profile_IDENTIFIER);
+
+ -- profile_IDENTIFIER => Protected | Ravenscar
+
+ when Pragma_Profile_Warnings =>
+ GNAT_Pragma;
+ Check_Arg_Count (1);
+ Check_Valid_Configuration_Pragma;
+ Check_No_Identifiers;
+
+ 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);
+ else
+ Error_Pragma_Arg ("& is not a valid profile", Argx);
+ end if;
+ end;
+
--------------------------
-- Propagate_Exceptions --
--------------------------
when Pragma_Psect_Object | Pragma_Common_Object =>
Psect_Object : declare
Args : Args_List (1 .. 3);
- Names : Name_List (1 .. 3) := (
+ Names : constant Name_List (1 .. 3) := (
Name_Internal,
Name_External,
Name_Size);
External : Node_Id renames Args (2);
Size : Node_Id renames Args (3);
- R_Internal : Node_Id;
- R_External : Node_Id;
-
- MA : Node_Id;
- Str : String_Id;
-
- Def_Id : Entity_Id;
+ Def_Id : Entity_Id;
procedure Check_Too_Long (Arg : Node_Id);
-- Posts message if the argument is an identifier with more
-- than 31 characters, or a string literal with more than
-- 31 characters, and we are operating under VMS
+ --------------------
+ -- Check_Too_Long --
+ --------------------
+
procedure Check_Too_Long (Arg : Node_Id) is
- X : Node_Id := Original_Node (Arg);
+ X : constant Node_Id := Original_Node (Arg);
begin
if Nkind (X) /= N_String_Literal
Gather_Associations (Names, Args);
Process_Extended_Import_Export_Internal_Arg (Internal);
- R_Internal := Relocate_Node (Internal);
-
- Def_Id := Entity (R_Internal);
+ Def_Id := Entity (Internal);
if Ekind (Def_Id) /= E_Constant
and then Ekind (Def_Id) /= E_Variable
("pragma% must designate an object", Internal);
end if;
- Check_Too_Long (R_Internal);
+ Check_Too_Long (Internal);
if Is_Imported (Def_Id) or else Is_Exported (Def_Id) then
Error_Pragma_Arg
("cannot use pragma% for imported/exported object",
- R_Internal);
+ Internal);
end if;
- if Is_Concurrent_Type (Etype (R_Internal)) then
+ if Is_Concurrent_Type (Etype (Internal)) then
Error_Pragma_Arg
("cannot specify pragma % for task/protected object",
- R_Internal);
+ Internal);
end if;
- if Is_Psected (Def_Id) then
- Error_Msg_N ("?duplicate Psect_Object pragma", N);
- else
- Set_Is_Psected (Def_Id);
+ if Has_Rep_Pragma (Def_Id, Name_Common_Object)
+ or else
+ Has_Rep_Pragma (Def_Id, Name_Psect_Object)
+ then
+ Error_Msg_N ("?duplicate Common/Psect_Object pragma", N);
end if;
if Ekind (Def_Id) = E_Constant then
Error_Pragma_Arg
- ("cannot specify pragma % for a constant", R_Internal);
+ ("cannot specify pragma % for a constant", Internal);
end if;
- if Is_Record_Type (Etype (R_Internal)) then
+ if Is_Record_Type (Etype (Internal)) then
declare
Ent : Entity_Id;
Decl : Entity_Id;
begin
- Ent := First_Entity (Etype (R_Internal));
+ Ent := First_Entity (Etype (Internal));
while Present (Ent) loop
Decl := Declaration_Node (Ent);
if Ekind (Ent) = E_Component
and then Nkind (Decl) = N_Component_Declaration
and then Present (Expression (Decl))
+ and then Warn_On_Export_Import
then
Error_Msg_N
- ("?object for pragma % has defaults", R_Internal);
+ ("?object for pragma % has defaults", Internal);
exit;
else
Check_Too_Long (Size);
end if;
- -- Make Psect case-insensitive.
-
if Present (External) then
+ Check_Arg_Is_External_Name (External);
Check_Too_Long (External);
-
- 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;
- Start_String;
- Store_String_Chars (Name_Buffer (1 .. Name_Len));
- Str := End_String;
- R_External := Make_String_Literal
- (Sloc => Sloc (External), Strval => Str);
- else
- Get_Name_String (Chars (Internal));
- Set_All_Upper_Case;
- Start_String;
- Store_String_Chars (Name_Buffer (1 .. Name_Len));
- Str := End_String;
- R_External := Make_String_Literal
- (Sloc => Sloc (Internal), Strval => Str);
end if;
- -- Transform into pragma Linker_Section, add attributes to
- -- match what DEC Ada does. Ignore size for now?
-
- Rewrite (N,
- Make_Pragma
- (Sloc (N),
- Name_Linker_Section,
- New_List
- (Make_Pragma_Argument_Association
- (Sloc => Sloc (R_Internal),
- Expression => R_Internal),
- Make_Pragma_Argument_Association
- (Sloc => Sloc (R_External),
- Expression => R_External))));
-
- Analyze (N);
-
- -- Add Machine_Attribute of "overlaid", so the section overlays
- -- other sections of the same name.
-
- Start_String;
- Store_String_Chars ("overlaid");
- Str := End_String;
-
- MA :=
- Make_Pragma
- (Sloc (N),
- Name_Machine_Attribute,
- New_List
- (Make_Pragma_Argument_Association
- (Sloc => Sloc (R_Internal),
- Expression => R_Internal),
- Make_Pragma_Argument_Association
- (Sloc => Sloc (R_External),
- Expression =>
- Make_String_Literal
- (Sloc => Sloc (R_External),
- Strval => Str))));
- Analyze (MA);
-
- -- Add Machine_Attribute of "global", so the section is visible
- -- everywhere
-
- Start_String;
- Store_String_Chars ("global");
- Str := End_String;
-
- MA :=
- Make_Pragma
- (Sloc (N),
- Name_Machine_Attribute,
- New_List
- (Make_Pragma_Argument_Association
- (Sloc => Sloc (R_Internal),
- Expression => R_Internal),
- Make_Pragma_Argument_Association
- (Sloc => Sloc (R_External),
- Expression =>
- Make_String_Literal
- (Sloc => Sloc (R_External),
- Strval => Str))));
- Analyze (MA);
-
- -- Add Machine_Attribute of "initialize", so the section is
- -- demand zeroed.
-
- Start_String;
- Store_String_Chars ("initialize");
- Str := End_String;
-
- MA :=
- Make_Pragma
- (Sloc (N),
- Name_Machine_Attribute,
- New_List
- (Make_Pragma_Argument_Association
- (Sloc => Sloc (R_Internal),
- Expression => R_Internal),
- Make_Pragma_Argument_Association
- (Sloc => Sloc (R_External),
- Expression =>
- Make_String_Literal
- (Sloc => Sloc (R_External),
- Strval => Str))));
- Analyze (MA);
+ -- If all error tests pass, link pragma on to the rep item chain
+ Record_Rep_Item (Def_Id, N);
end Psect_Object;
----------
-- pragma Pure_Function ([Entity =>] function_LOCAL_NAME);
when Pragma_Pure_Function => Pure_Function : declare
- E_Id : Node_Id;
- E : Entity_Id;
- Def_Id : Entity_Id;
+ E_Id : Node_Id;
+ E : Entity_Id;
+ Def_Id : Entity_Id;
+ Effective : Boolean := False;
begin
GNAT_Pragma;
-- Loop through homonyms (overloadings) of referenced entity
E := Entity (E_Id);
- while Present (E) loop
- Def_Id := Get_Base_Subprogram (E);
- if Ekind (Def_Id) /= E_Function
- and then Ekind (Def_Id) /= E_Generic_Function
- and then Ekind (Def_Id) /= E_Operator
+ if Present (E) then
+ loop
+ Def_Id := Get_Base_Subprogram (E);
+
+ if Ekind (Def_Id) /= E_Function
+ and then Ekind (Def_Id) /= E_Generic_Function
+ and then Ekind (Def_Id) /= E_Operator
+ then
+ Error_Pragma_Arg
+ ("pragma% requires a function name", Arg1);
+ end if;
+
+ Set_Is_Pure (Def_Id);
+
+ if not Has_Pragma_Pure_Function (Def_Id) then
+ Set_Has_Pragma_Pure_Function (Def_Id);
+ Effective := True;
+ end if;
+
+ E := Homonym (E);
+ exit when No (E) or else Scope (E) /= Current_Scope;
+ end loop;
+
+ if not Effective
+ and then Warn_On_Redundant_Constructs
then
- Error_Pragma_Arg ("pragma% requires a function name", Arg1);
+ Error_Msg_NE ("pragma Pure_Function on& is redundant?",
+ N, Entity (E_Id));
end if;
-
- Set_Is_Pure (Def_Id);
- Set_Has_Pragma_Pure_Function (Def_Id);
- E := Homonym (E);
- end loop;
+ end if;
end Pure_Function;
--------------------
then
Error_Msg_Sloc := Queuing_Policy_Sloc;
Error_Pragma ("queuing policy incompatible with policy#");
+
+ -- Set new policy, but always preserve System_Location since
+ -- we like the error message with the run time name.
+
else
Queuing_Policy := QP;
- Queuing_Policy_Sloc := Loc;
+
+ if Queuing_Policy_Sloc /= System_Location then
+ Queuing_Policy_Sloc := Loc;
+ end if;
end if;
end;
-- Ravenscar --
---------------
+ -- pragma Ravenscar;
+
when Pragma_Ravenscar =>
GNAT_Pragma;
Check_Arg_Count (0);
Check_Valid_Configuration_Pragma;
- Set_Ravenscar;
+ Set_Ravenscar_Profile (N);
+
+ if Warn_On_Obsolescent_Feature then
+ Error_Msg_N
+ ("pragma Ravenscar is an obsolescent feature?", N);
+ Error_Msg_N
+ ("|use pragma Profile (Ravenscar) instead", N);
+ end if;
-------------------------
-- Restricted_Run_Time --
-------------------------
+ -- pragma Restricted_Run_Time;
+
when Pragma_Restricted_Run_Time =>
GNAT_Pragma;
Check_Arg_Count (0);
Check_Valid_Configuration_Pragma;
- Set_Restricted_Profile;
+ Set_Profile_Restrictions (Restricted, N, Warn => False);
+
+ if Warn_On_Obsolescent_Feature then
+ Error_Msg_N
+ ("pragma Restricted_Run_Time is an obsolescent feature?", N);
+ Error_Msg_N
+ ("|use pragma Profile (Restricted) instead", N);
+ end if;
------------------
-- Restrictions --
-- pragma Restrictions (RESTRICTION {, RESTRICTION});
- -- RESTRICTION ::=
- -- restriction_IDENTIFIER
- -- | restriction_parameter_IDENTIFIER => EXPRESSION
-
- when Pragma_Restrictions => Restrictions_Pragma : declare
- Arg : Node_Id;
- R_Id : Restriction_Id;
- RP_Id : Restriction_Parameter_Id;
- Id : Name_Id;
- Expr : Node_Id;
- Val : Uint;
-
- begin
- Check_Ada_83_Warning;
- Check_At_Least_N_Arguments (1);
- Check_Valid_Configuration_Pragma;
-
- Arg := Arg1;
-
- while Present (Arg) loop
- Id := Chars (Arg);
- Expr := Expression (Arg);
-
- -- Case of no restriction identifier
-
- if Id = No_Name then
- if Nkind (Expr) /= N_Identifier then
- Error_Pragma_Arg
- ("invalid form for restriction", Arg);
-
- else
- R_Id := Get_Restriction_Id (Chars (Expr));
-
- if R_Id = Not_A_Restriction_Id then
- Error_Pragma_Arg
- ("invalid restriction identifier", Arg);
-
- -- Restriction is active
-
- else
- Restrictions (R_Id) := True;
- Restrictions_Loc (R_Id) := Sloc (N);
-
- -- Record the restriction if we are in the main unit,
- -- or in the extended main unit. The reason that we
- -- test separately for Main_Unit is that gnat.adc is
- -- processed with Current_Sem_Unit = Main_Unit, but
- -- nodes in gnat.adc do not appear to be the extended
- -- main source unit (they probably should do ???)
-
- if Current_Sem_Unit = Main_Unit
- or else In_Extended_Main_Source_Unit (N)
- then
- Main_Restrictions (R_Id) := True;
- end if;
-
- -- A very special case that must be processed here:
- -- pragma Restrictions (No_Exceptions) turns off all
- -- run-time checking. This is a bit dubious in terms
- -- of the formal language definition, but it is what
- -- is intended by the wording of RM H.4(12).
-
- if R_Id = No_Exceptions then
- Scope_Suppress := (others => True);
- end if;
- end if;
- end if;
-
- -- Case of restriction identifier present
-
- else
- RP_Id := Get_Restriction_Parameter_Id (Id);
- Analyze_And_Resolve (Expr, Any_Integer);
-
- if RP_Id = Not_A_Restriction_Parameter_Id then
- Error_Pragma_Arg
- ("invalid restriction parameter identifier", Arg);
-
- elsif not Is_OK_Static_Expression (Expr)
- or else not Is_Integer_Type (Etype (Expr))
- or else Expr_Value (Expr) < 0
- then
- Error_Pragma_Arg
- ("value must be non-negative static integer", Arg);
-
- -- Restriction pragma is active
+ -- RESTRICTION ::=
+ -- restriction_IDENTIFIER
+ -- | restriction_parameter_IDENTIFIER => EXPRESSION
- else
- Val := Expr_Value (Expr);
+ when Pragma_Restrictions =>
+ Process_Restrictions_Or_Restriction_Warnings;
- -- Record pragma if most restrictive so far
+ --------------------------
+ -- Restriction_Warnings --
+ --------------------------
- if Restriction_Parameters (RP_Id) = No_Uint
- or else Val < Restriction_Parameters (RP_Id)
- then
- Restriction_Parameters (RP_Id) := Expr_Value (Expr);
- Restriction_Parameters_Loc (RP_Id) := Sloc (N);
- end if;
- end if;
- end if;
+ -- pragma Restriction_Warnings (RESTRICTION {, RESTRICTION});
- Next (Arg);
- end loop;
- end Restrictions_Pragma;
+ -- RESTRICTION ::=
+ -- restriction_IDENTIFIER
+ -- | restriction_parameter_IDENTIFIER => EXPRESSION
+
+ when Pragma_Restriction_Warnings =>
+ Process_Restrictions_Or_Restriction_Warnings;
----------------
-- Reviewable --
-- pragma Shared (LOCAL_NAME);
when Pragma_Shared =>
+ GNAT_Pragma;
Process_Atomic_Shared_Volatile;
--------------------
-- Source_File_Name --
----------------------
+ -- There are five forms for this pragma:
+
+ -- pragma Source_File_Name (
+ -- [UNIT_NAME =>] unit_NAME,
+ -- BODY_FILE_NAME => STRING_LITERAL
+ -- [, [INDEX =>] INTEGER_LITERAL]);
+
+ -- pragma Source_File_Name (
+ -- [UNIT_NAME =>] unit_NAME,
+ -- SPEC_FILE_NAME => STRING_LITERAL
+ -- [, [INDEX =>] INTEGER_LITERAL]);
+
+ -- pragma Source_File_Name (
+ -- BODY_FILE_NAME => STRING_LITERAL
+ -- [, DOT_REPLACEMENT => STRING_LITERAL]
+ -- [, CASING => CASING_SPEC]);
+
+ -- pragma Source_File_Name (
+ -- SPEC_FILE_NAME => STRING_LITERAL
+ -- [, DOT_REPLACEMENT => STRING_LITERAL]
+ -- [, CASING => CASING_SPEC]);
+
-- pragma Source_File_Name (
- -- [UNIT_NAME =>] unit_NAME,
- -- [BODY_FILE_NAME | SPEC_FILE_NAME] => STRING_LITERAL);
+ -- SUBUNIT_FILE_NAME => STRING_LITERAL
+ -- [, DOT_REPLACEMENT => STRING_LITERAL]
+ -- [, CASING => CASING_SPEC]);
+
+ -- CASING_SPEC ::= Uppercase | Lowercase | Mixedcase
+
+ -- Pragma Source_File_Name_Project (SFNP) is equivalent to pragma
+ -- Source_File_Name (SFN), however their usage is exclusive:
+ -- SFN can only be used when no project file is used, while
+ -- SFNP can only be used when a project file is used.
-- No processing here. Processing was completed during parsing,
-- since we need to have file names set as early as possible.
GNAT_Pragma;
Check_Valid_Configuration_Pragma;
+ ------------------------------
+ -- Source_File_Name_Project --
+ ------------------------------
+
+ -- See Source_File_Name for syntax
+
+ -- No processing here. Processing was completed during parsing,
+ -- since we need to have file names set as early as possible.
+ -- Units are loaded well before semantic processing starts.
+
+ -- The only processing we defer to this point is the check
+ -- for correct placement.
+
+ when Pragma_Source_File_Name_Project =>
+ GNAT_Pragma;
+ Check_Valid_Configuration_Pragma;
+
+ -- Check that a pragma Source_File_Name_Project is used only
+ -- in a configuration pragmas file.
+
+ -- Pragmas Source_File_Name_Project should only be generated
+ -- by the Project Manager in configuration pragmas files.
+
+ -- This is really an ugly test. It seems to depend on some
+ -- accidental and undocumented property. At the very least
+ -- it needs to be documented, but it would be better to have
+ -- a clean way of testing if we are in a configuration file???
+
+ if Present (Parent (N)) then
+ Error_Pragma
+ ("pragma% can only appear in a configuration pragmas file");
+ end if;
+
----------------------
-- Source_Reference --
----------------------
-- pragma Storage_Size (EXPRESSION);
when Pragma_Storage_Size => Storage_Size : declare
- P : constant Node_Id := Parent (N);
- X : Node_Id;
+ P : constant Node_Id := Parent (N);
+ Arg : Node_Id;
begin
Check_No_Identifiers;
Check_Arg_Count (1);
- -- Set In_Default_Expression for per-object case???
+ -- The expression must be analyzed in the special manner
+ -- described in "Handling of Default Expressions" in sem.ads.
- X := Expression (Arg1);
- Analyze_And_Resolve (X, Any_Integer);
+ -- Set In_Default_Expression for per-object case ???
- if not Is_Static_Expression (X) then
- Check_Restriction (Static_Storage_Size, X);
+ Arg := Expression (Arg1);
+ Analyze_Per_Use_Expression (Arg, Any_Integer);
+
+ if not Is_Static_Expression (Arg) then
+ Check_Restriction (Static_Storage_Size, Arg);
end if;
if Nkind (P) /= N_Task_Definition then
-- [Read =>] function_NAME,
-- [Write =>] function NAME);
- when Pragma_Stream_Convert => Stream_Convert : begin
+ when Pragma_Stream_Convert => Stream_Convert : declare
+
+ procedure Check_OK_Stream_Convert_Function (Arg : Node_Id);
+ -- Check that the given argument is the name of a local
+ -- function of one argument that is not overloaded earlier
+ -- in the current local scope. A check is also made that the
+ -- argument is a function with one parameter.
+
+ --------------------------------------
+ -- Check_OK_Stream_Convert_Function --
+ --------------------------------------
+
+ procedure Check_OK_Stream_Convert_Function (Arg : Node_Id) is
+ Ent : Entity_Id;
+
+ begin
+ Check_Arg_Is_Local_Name (Arg);
+ Ent := Entity (Expression (Arg));
+
+ if Has_Homonym (Ent) then
+ Error_Pragma_Arg
+ ("argument for pragma% may not be overloaded", Arg);
+ end if;
+
+ if Ekind (Ent) /= E_Function
+ or else No (First_Formal (Ent))
+ or else Present (Next_Formal (First_Formal (Ent)))
+ then
+ Error_Pragma_Arg
+ ("argument for pragma% must be" &
+ " function of one argument", Arg);
+ end if;
+ end Check_OK_Stream_Convert_Function;
+
+ -- Start of procecessing for Stream_Convert
+
+ begin
GNAT_Pragma;
Check_Arg_Count (3);
Check_Optional_Identifier (Arg1, Name_Entity);
Check_Optional_Identifier (Arg2, Name_Read);
Check_Optional_Identifier (Arg3, Name_Write);
Check_Arg_Is_Local_Name (Arg1);
- Check_Non_Overloaded_Function (Arg2);
- Check_Non_Overloaded_Function (Arg3);
+ Check_OK_Stream_Convert_Function (Arg2);
+ Check_OK_Stream_Convert_Function (Arg3);
declare
Typ : constant Entity_Id :=
S := Strval (A);
declare
- Slen : Natural := Natural (String_Length (S));
+ Slen : constant Natural := Natural (String_Length (S));
Options : String (1 .. Slen);
J : Natural;
Check_Optional_Identifier (Arg1, Name_Entity);
Set_Debug_Info_Off (Entity (Get_Pragma_Arg (Arg1)));
+ ----------------------------------
+ -- Suppress_Exception_Locations --
+ ----------------------------------
+
+ -- pragma Suppress_Exception_Locations;
+
+ when Pragma_Suppress_Exception_Locations =>
+ GNAT_Pragma;
+ Check_Arg_Count (0);
+ Check_Valid_Configuration_Pragma;
+ Exception_Locations_Suppressed := True;
+
-----------------------------
-- Suppress_Initialization --
-----------------------------
Error_Msg_Sloc := Task_Dispatching_Policy_Sloc;
Error_Pragma
("task dispatching policy incompatible with policy#");
+
+ -- Set new policy, but always preserve System_Location since
+ -- we like the error message with the run time name.
+
else
Task_Dispatching_Policy := DP;
- Task_Dispatching_Policy_Sloc := Loc;
+
+ if Task_Dispatching_Policy_Sloc /= System_Location then
+ Task_Dispatching_Policy_Sloc := Loc;
+ end if;
end if;
end;
else
Set_Has_Task_Info_Pragma (P, True);
end if;
-
end Task_Info;
---------------
Set_Has_Task_Name_Pragma (P, True);
Record_Rep_Item (Defining_Identifier (Parent (P)), N);
end if;
-
end Task_Name;
------------------
when Pragma_Task_Storage => Task_Storage : declare
Args : Args_List (1 .. 2);
- Names : Name_List (1 .. 2) := (
+ Names : constant Name_List (1 .. 2) := (
Name_Task_Type,
Name_Top_Guard);
begin
GNAT_Pragma;
Gather_Associations (Names, Args);
+
+ if No (Task_Type) then
+ Error_Pragma
+ ("missing task_type argument for pragma%");
+ end if;
+
Check_Arg_Is_Local_Name (Task_Type);
Ent := Entity (Task_Type);
if Rep_Item_Too_Late (Ent, N) then
raise Pragma_Exit;
end if;
-
end Task_Storage;
+ -----------------
+ -- Thread_Body --
+ -----------------
+
+ -- pragma Thread_Body
+ -- ( [Entity =>] LOCAL_NAME
+ -- [,[Secondary_Stack_Size =>] static_integer_EXPRESSION]);
+
+ when Pragma_Thread_Body => Thread_Body : declare
+ Id : Node_Id;
+ SS : Node_Id;
+ E : Entity_Id;
+
+ begin
+ GNAT_Pragma;
+ Check_At_Least_N_Arguments (1);
+ Check_At_Most_N_Arguments (2);
+ Check_Optional_Identifier (Arg1, Name_Entity);
+ Check_Arg_Is_Local_Name (Arg1);
+
+ Id := Expression (Arg1);
+
+ if not Is_Entity_Name (Id)
+ or else not Is_Subprogram (Entity (Id))
+ then
+ Error_Pragma_Arg ("subprogram name required", Arg1);
+ end if;
+
+ E := Entity (Id);
+
+ -- Go to renamed subprogram if present, since Thread_Body applies
+ -- to the actual renamed entity, not to the renaming entity.
+
+ if Present (Alias (E))
+ and then Nkind (Parent (Declaration_Node (E))) =
+ N_Subprogram_Renaming_Declaration
+ then
+ E := Alias (E);
+ end if;
+
+ -- Various error checks
+
+ if Nkind (Parent (Declaration_Node (E))) = N_Subprogram_Body then
+ Error_Pragma
+ ("pragma% requires separate spec and must come before body");
+
+ elsif Rep_Item_Too_Early (E, N)
+ or else
+ Rep_Item_Too_Late (E, N)
+ then
+ raise Pragma_Exit;
+
+ elsif Is_Thread_Body (E) then
+ Error_Pragma_Arg
+ ("only one thread body pragma allowed", Arg1);
+
+ elsif Present (Homonym (E))
+ and then Scope (Homonym (E)) = Current_Scope
+ then
+ Error_Pragma_Arg
+ ("thread body subprogram must not be overloaded", Arg1);
+ end if;
+
+ Set_Is_Thread_Body (E);
+
+ -- Deal with secondary stack argument
+
+ if Arg_Count = 2 then
+ Check_Optional_Identifier (Arg2, Name_Secondary_Stack_Size);
+ SS := Expression (Arg2);
+ Analyze_And_Resolve (SS, Any_Integer);
+ end if;
+ end Thread_Body;
+
----------------
-- Time_Slice --
----------------
when Pragma_Title => Title : declare
Args : Args_List (1 .. 2);
- Names : Name_List (1 .. 2) := (
+ Names : constant Name_List (1 .. 2) := (
Name_Title,
Name_Subtitle);
-- pragma Unchecked_Union (first_subtype_LOCAL_NAME)
when Pragma_Unchecked_Union => Unchecked_Union : declare
- Assoc : Node_Id := Arg1;
- Type_Id : Node_Id := Expression (Assoc);
+ Assoc : constant Node_Id := Arg1;
+ Type_Id : constant Node_Id := Expression (Assoc);
Typ : Entity_Id;
Discr : Entity_Id;
Tdef : Node_Id;
elsif Is_Limited_Type (Typ) then
Error_Msg_N
("Unchecked_Union must not be limited record type", Typ);
+ Explain_Limited_Type (Typ, Typ);
return;
else
Tdef := Type_Definition (Declaration_Node (Typ));
Clist := Component_List (Tdef);
+ Comp := First (Component_Items (Clist));
+ while Present (Comp) loop
+
+ Check_Component (Comp);
+ Next (Comp);
+
+ end loop;
+
if No (Clist) or else No (Variant_Part (Clist)) then
Error_Msg_N
("Unchecked_Union must have variant part",
Vpart := Variant_Part (Clist);
- if Is_Non_Empty_List (Component_Items (Clist)) then
- Error_Msg_N
- ("components before variant not allowed " &
- "in Unchecked_Union",
- First (Component_Items (Clist)));
- end if;
-
Variant := First (Variants (Vpart));
while Present (Variant) loop
- Clist := Component_List (Variant);
-
- if Present (Variant_Part (Clist)) then
- Error_Msg_N
- ("Unchecked_Union may not have nested variants",
- Variant_Part (Clist));
- end if;
-
- if not Is_Non_Empty_List (Component_Items (Clist)) then
- Error_Msg_N
- ("Unchecked_Union may not have empty component list",
- Variant);
- return;
- end if;
-
- Comp := First (Component_Items (Clist));
-
- if Nkind (Comp) = N_Component_Declaration then
-
- if Present (Expression (Comp)) then
- Error_Msg_N
- ("default initialization not allowed " &
- "in Unchecked_Union",
- Expression (Comp));
- end if;
-
- declare
- Sindic : constant Node_Id :=
- Subtype_Indication (Comp);
-
- begin
- if Nkind (Sindic) = N_Subtype_Indication then
- Check_Static_Constraint (Constraint (Sindic));
- end if;
- end;
- end if;
-
- if Present (Next (Comp)) then
- Error_Msg_N
- ("Unchecked_Union variant can have only one component",
- Next (Comp));
- end if;
-
+ Check_Variant (Variant);
Next (Variant);
end loop;
end if;
- Set_Is_Unchecked_Union (Typ, True);
- Set_Suppress_Discriminant_Checks (Typ, True);
- Set_Convention (Typ, Convention_C);
+ Set_Is_Unchecked_Union (Typ, True);
+ Set_Convention (Typ, Convention_C);
Set_Has_Unchecked_Union (Base_Type (Typ), True);
Set_Is_Unchecked_Union (Base_Type (Typ), True);
-
end Unchecked_Union;
------------------------
-- appears in the body, not in the spec).
when Pragma_Unimplemented_Unit => Unimplemented_Unit : declare
- Cunitent : Entity_Id := Cunit_Entity (Get_Source_Unit (Loc));
- Ent_Kind : Entity_Kind := Ekind (Cunitent);
+ Cunitent : constant Entity_Id :=
+ Cunit_Entity (Get_Source_Unit (Loc));
+ Ent_Kind : constant Entity_Kind :=
+ Ekind (Cunitent);
begin
GNAT_Pragma;
end if;
end Unimplemented_Unit;
+ --------------------
+ -- Universal_Data --
+ --------------------
+
+ -- pragma Universal_Data [(library_unit_NAME)];
+
+ when Pragma_Universal_Data =>
+ GNAT_Pragma;
+
+ -- If this is a configuration pragma, then set the universal
+ -- addressing option, otherwise confirm that the pragma
+ -- satisfies the requirements of library unit pragma placement
+ -- and leave it to the GNAAMP back end to detect the pragma
+ -- (avoids transitive setting of the option due to withed units).
+
+ if Is_Configuration_Pragma then
+ Universal_Addressing_On_AAMP := True;
+ else
+ Check_Valid_Library_Unit_Pragma;
+ end if;
+
+ if not AAMP_On_Target then
+ Error_Pragma ("?pragma% ignored (applies only to AAMP)");
+ end if;
+
+ ------------------
+ -- Unreferenced --
+ ------------------
+
+ -- pragma Unreferenced (local_Name {, local_Name});
+
+ when Pragma_Unreferenced => Unreferenced : declare
+ Arg_Node : Node_Id;
+ Arg_Expr : Node_Id;
+ Arg_Ent : Entity_Id;
+
+ begin
+ GNAT_Pragma;
+ Check_At_Least_N_Arguments (1);
+
+ Arg_Node := Arg1;
+ while Present (Arg_Node) loop
+ Check_No_Identifier (Arg_Node);
+
+ -- Note that the analyze call done by Check_Arg_Is_Local_Name
+ -- will in fact generate a reference, so that the entity will
+ -- have a reference, which will inhibit any warnings about it
+ -- not being referenced, and also properly show up in the ali
+ -- file as a reference. But this reference is recorded before
+ -- the Has_Pragma_Unreferenced flag is set, so that no warning
+ -- is generated for this reference.
+
+ Check_Arg_Is_Local_Name (Arg_Node);
+ Arg_Expr := Get_Pragma_Arg (Arg_Node);
+
+ if Is_Entity_Name (Arg_Expr) then
+ Arg_Ent := Entity (Arg_Expr);
+
+ -- If the entity is overloaded, the pragma applies to the
+ -- most recent overloading, as documented. In this case,
+ -- name resolution does not generate a reference, so it
+ -- must be done here explicitly.
+
+ if Is_Overloaded (Arg_Expr) then
+ Generate_Reference (Arg_Ent, N);
+ end if;
+
+ Set_Has_Pragma_Unreferenced (Arg_Ent);
+ end if;
+
+ Next (Arg_Node);
+ end loop;
+ end Unreferenced;
+
------------------------------
-- Unreserve_All_Interrupts --
------------------------------
begin
GNAT_Pragma;
Check_Arg_Count (1);
- Check_Valid_Configuration_Pragma;
Check_No_Identifiers;
if Nkind (A) = N_String_Literal then
S := Strval (A);
declare
- Slen : Natural := Natural (String_Length (S));
+ Slen : constant Natural := Natural (String_Length (S));
Options : String (1 .. Slen);
J : Natural;
-- pragma Warnings (On | Off, [LOCAL_NAME])
- when Pragma_Warnings =>
+ when Pragma_Warnings => Warnings : begin
GNAT_Pragma;
Check_At_Least_N_Arguments (1);
Check_At_Most_N_Arguments (2);
E_Id := Expression (Arg2);
Analyze (E_Id);
+ -- In the expansion of an inlined body, a reference to
+ -- the formal may be wrapped in a conversion if the actual
+ -- is a conversion. Retrieve the real entity name.
+
+ if (In_Instance_Body
+ or else In_Inlined_Body)
+ and then Nkind (E_Id) = N_Unchecked_Type_Conversion
+ then
+ E_Id := Expression (E_Id);
+ end if;
+
if not Is_Entity_Name (E_Id) then
Error_Pragma_Arg
("second argument of pragma% must be entity name",
if Is_Enumeration_Type (E) then
declare
- Lit : Entity_Id := First_Literal (E);
-
+ Lit : Entity_Id;
begin
+ Lit := First_Literal (E);
while Present (Lit) loop
Set_Warnings_Off (Lit);
Next_Literal (Lit);
end if;
end;
end if;
+ end Warnings;
-------------------
-- Weak_External --
end if;
end Weak_External;
+ --------------------
+ -- Unknown_Pragma --
+ --------------------
+
+ -- Should be impossible, since the case of an unknown pragma is
+ -- separately processed before the case statement is entered.
+
+ when Unknown_Pragma =>
+ raise Program_Error;
end case;
exception
when Pragma_Exit => null;
-
end Analyze_Pragma;
+ ---------------------------------
+ -- Delay_Config_Pragma_Analyze --
+ ---------------------------------
+
+ function Delay_Config_Pragma_Analyze (N : Node_Id) return Boolean is
+ begin
+ return Chars (N) = Name_Interrupt_State;
+ end Delay_Config_Pragma_Analyze;
+
-------------------------
-- Get_Base_Subprogram --
-------------------------
Result : Entity_Id;
begin
- Result := Def_Id;
-
-- Follow subprogram renaming chain
+ Result := Def_Id;
while Is_Subprogram (Result)
and then
(Is_Generic_Instance (Result)
or else Nkind (Parent (Declaration_Node (Result))) =
- N_Subprogram_Renaming_Declaration)
+ N_Subprogram_Renaming_Declaration)
and then Present (Alias (Result))
loop
Result := Alias (Result);
return Result;
end Get_Base_Subprogram;
- ---------------------------
- -- Is_Generic_Subprogram --
- ---------------------------
+ -----------------------------
+ -- Is_Config_Static_String --
+ -----------------------------
+
+ function Is_Config_Static_String (Arg : Node_Id) return Boolean is
+
+ function Add_Config_Static_String (Arg : Node_Id) return Boolean;
+ -- This is an internal recursive function that is just like the
+ -- outer function except that it adds the string to the name buffer
+ -- rather than placing the string in the name buffer.
+
+ ------------------------------
+ -- Add_Config_Static_String --
+ ------------------------------
+
+ function Add_Config_Static_String (Arg : Node_Id) return Boolean is
+ N : Node_Id;
+ C : Char_Code;
+
+ begin
+ N := Arg;
+
+ if Nkind (N) = N_Op_Concat then
+ if Add_Config_Static_String (Left_Opnd (N)) then
+ N := Right_Opnd (N);
+ else
+ return False;
+ end if;
+ end if;
+
+ if Nkind (N) /= N_String_Literal then
+ Error_Msg_N ("string literal expected for pragma argument", N);
+ return False;
+
+ else
+ for J in 1 .. String_Length (Strval (N)) loop
+ C := Get_String_Char (Strval (N), J);
+
+ if not In_Character_Range (C) then
+ Error_Msg
+ ("string literal contains invalid wide character",
+ Sloc (N) + 1 + Source_Ptr (J));
+ return False;
+ end if;
+
+ Add_Char_To_Name_Buffer (Get_Character (C));
+ end loop;
+ end if;
+
+ return True;
+ end Add_Config_Static_String;
+
+ -- Start of prorcessing for Is_Config_Static_String
+
+ begin
+
+ Name_Len := 0;
+ return Add_Config_Static_String (Arg);
+ end Is_Config_Static_String;
+
+ -----------------------------------------
+ -- Is_Non_Significant_Pragma_Reference --
+ -----------------------------------------
+
+ -- This function makes use of the following static table which indicates
+ -- whether a given pragma is significant. A value of -1 in this table
+ -- indicates that the reference is significant. A value of zero indicates
+ -- than appearence as any argument is insignificant, a positive value
+ -- indicates that appearence in that parameter position is significant.
+
+ 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_All_Calls_Remote => -1,
+ Pragma_Annotate => -1,
+ Pragma_Assert => -1,
+ Pragma_Asynchronous => -1,
+ Pragma_Atomic => 0,
+ Pragma_Atomic_Components => 0,
+ Pragma_Attach_Handler => -1,
+ Pragma_CPP_Class => 0,
+ Pragma_CPP_Constructor => 0,
+ Pragma_CPP_Virtual => 0,
+ Pragma_CPP_Vtable => 0,
+ Pragma_C_Pass_By_Copy => 0,
+ Pragma_Comment => 0,
+ Pragma_Common_Object => -1,
+ Pragma_Compile_Time_Warning => -1,
+ Pragma_Complex_Representation => 0,
+ Pragma_Component_Alignment => -1,
+ Pragma_Controlled => 0,
+ Pragma_Convention => 0,
+ Pragma_Convention_Identifier => 0,
+ Pragma_Debug => -1,
+ Pragma_Detect_Blocking => -1,
+ Pragma_Discard_Names => 0,
+ Pragma_Elaborate => -1,
+ Pragma_Elaborate_All => -1,
+ Pragma_Elaborate_Body => -1,
+ Pragma_Elaboration_Checks => -1,
+ Pragma_Eliminate => -1,
+ Pragma_Explicit_Overriding => -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_External_Name_Casing => -1,
+ Pragma_Finalize_Storage_Only => 0,
+ Pragma_Float_Representation => 0,
+ Pragma_Ident => -1,
+ 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_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_Java_Constructor => -1,
+ Pragma_Java_Interface => -1,
+ Pragma_Keep_Names => 0,
+ Pragma_License => -1,
+ Pragma_Link_With => -1,
+ Pragma_Linker_Alias => -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_Run_Time => -1,
+ Pragma_No_Strict_Aliasing => -1,
+ Pragma_Normalize_Scalars => -1,
+ Pragma_Obsolescent => 0,
+ Pragma_Optimize => -1,
+ Pragma_Optional_Overriding => -1,
+ Pragma_Pack => 0,
+ Pragma_Page => -1,
+ Pragma_Passive => -1,
+ Pragma_Polling => -1,
+ Pragma_Persistent_Data => -1,
+ Pragma_Persistent_Object => -1,
+ Pragma_Preelaborate => -1,
+ Pragma_Priority => -1,
+ Pragma_Profile => 0,
+ Pragma_Profile_Warnings => 0,
+ Pragma_Propagate_Exceptions => -1,
+ Pragma_Psect_Object => -1,
+ Pragma_Pure => 0,
+ Pragma_Pure_Function => 0,
+ Pragma_Queuing_Policy => -1,
+ Pragma_Ravenscar => -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_Share_Generic => -1,
+ Pragma_Shared => -1,
+ Pragma_Shared_Passive => -1,
+ Pragma_Source_File_Name => -1,
+ Pragma_Source_File_Name_Project => -1,
+ Pragma_Source_Reference => -1,
+ Pragma_Storage_Size => -1,
+ Pragma_Storage_Unit => -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_Thread_Body => +2,
+ Pragma_Time_Slice => -1,
+ Pragma_Title => -1,
+ Pragma_Unchecked_Union => 0,
+ Pragma_Unimplemented_Unit => -1,
+ Pragma_Universal_Data => -1,
+ Pragma_Unreferenced => -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 => 0,
+ Unknown_Pragma => 0);
+
+ function Is_Non_Significant_Pragma_Reference (N : Node_Id) return Boolean is
+ P : Node_Id;
+ C : Int;
+ A : Node_Id;
- function Is_Generic_Subprogram (Id : Entity_Id) return Boolean is
begin
- return Ekind (Id) = E_Generic_Procedure
- or else Ekind (Id) = E_Generic_Function;
- end Is_Generic_Subprogram;
+ P := Parent (N);
+
+ if Nkind (P) /= N_Pragma_Argument_Association then
+ return False;
+
+ else
+ C := Sig_Flags (Get_Pragma_Id (Chars (Parent (P))));
+
+ case C is
+ when -1 =>
+ return False;
+
+ when 0 =>
+ return True;
+
+ when others =>
+ A := First (Pragma_Argument_Associations (Parent (P)));
+ for J in 1 .. C - 1 loop
+ if No (A) then
+ return False;
+ end if;
+
+ Next (A);
+ end loop;
+
+ return A = P;
+ end case;
+ end if;
+ end Is_Non_Significant_Pragma_Reference;
------------------------------
-- Is_Pragma_String_Literal --
else
return False;
end if;
-
end Is_Pragma_String_Literal;
--------------------------------------
-- Stores encoded value of character code CC. The encoding we
-- use an underscore followed by four lower case hex digits.
+ ------------
+ -- Encode --
+ ------------
+
procedure Encode is
begin
Store_String_Char (Get_Char_Code ('_'));
Pref := Prefix (N);
Scop := Scope (Entity (N));
-
while Nkind (Pref) = N_Selected_Component loop
Change_Selected_Component_To_Expanded_Name (Pref);
Set_Entity (Selector_Name (Pref), Scop);
Set_Entity (Pref, Scop);
end if;
end Set_Unit_Name;
-
end Sem_Prag;
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