-- --
-- B o d y --
-- --
--- $Revision$
--- --
--- Copyright (C) 1992-2001, Free Software Foundation, Inc. --
+-- Copyright (C) 1992-2007, 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- --
-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
-- for more details. You should have received a copy of the GNU General --
-- Public License distributed with GNAT; see file COPYING. If not, write --
--- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
--- MA 02111-1307, USA. --
+-- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
+-- Boston, MA 02110-1301, 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 Csets; use Csets;
with Debug; use Debug;
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 Sem_Type; use Sem_Type;
with Sem_Util; use Sem_Util;
with Sem_VFpt; use Sem_VFpt;
+with Sem_Warn; use Sem_Warn;
with Stand; use Stand;
with Sinfo; use Sinfo;
with Sinfo.CN; use Sinfo.CN;
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.
-- Otherwise the entity is returned unchanged. Should be in Einfo???
+ procedure rv;
+ -- This is a dummy function called by the processing for pragma Reviewable.
+ -- It is there for assisting front end debugging. By placing a Reviewable
+ -- pragma in the source program, a breakpoint on rv catches this place in
+ -- the source, allowing convenient stepping to the point of interest.
+
procedure Set_Unit_Name (N : Node_Id; With_Item : Node_Id);
-- Place semantic information on the argument of an Elaborate or
-- 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 --
-------------------------------
Pragma_Exit : exception;
-- This exception is used to exit pragma processing completely. It
- -- is used when an error is detected, and in other situations where
- -- it is known that no further processing is required.
+ -- is used when an error is detected, and no further processing is
+ -- required. It is also used if an earlier error has left the tree
+ -- in a state where the pragma should not be processed.
Arg_Count : Nat;
-- Number of pragma argument associations
-- First four pragma arguments (pragma argument association nodes,
-- or Empty if the corresponding argument does not exist).
+ type Name_List is array (Natural range <>) of Name_Id;
+ type Args_List is array (Natural range <>) of Node_Id;
+ -- Types used for arguments to Check_Arg_Order and Gather_Associations
+
+ procedure Ada_2005_Pragma;
+ -- Called for pragmas defined in Ada 2005, that are not in Ada 95. In
+ -- Ada 95 mode, these are implementation defined pragmas, so should be
+ -- caught by the No_Implementation_Pragmas restriction
+
procedure Check_Ada_83_Warning;
-- Issues a warning message for the current pragma if operating in Ada
-- 83 mode (used for language pragmas that are not a standard part of
-- 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.
-- valid task dispatching policy name. If not give error and raise
-- Pragma_Exit.
+ procedure Check_Arg_Order (Names : Name_List);
+ -- Checks for an instance of two arguments with identifiers for the
+ -- current pragma which are not in the sequence indicated by Names,
+ -- and if so, generates a fatal message about bad order of arguments.
+
procedure Check_At_Least_N_Arguments (N : Nat);
-- Check there are at least N arguments present
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, and for restrictions on finalizable components.
+
+ 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 %
-- unit pragma that is not a compilation unit pragma, then the
-- identifier must be visible.
- type Name_List is array (Natural range <>) of Name_Id;
- type Args_List is array (Natural range <>) of Node_Id;
+ function Find_Unique_Parameterless_Procedure
+ (Name : Entity_Id;
+ Arg : Node_Id) return Entity_Id;
+ -- Used for a procedure pragma to find the unique parameterless
+ -- procedure identified by Name, returns it if it exists, otherwise
+ -- errors out and uses Arg as the pragma argument for the message.
+
procedure Gather_Associations
(Names : Name_List;
Args : out Args_List);
-- returned, otherwise Arg is returned unchanged.
procedure GNAT_Pragma;
- -- Called for all GNAT defined pragmas to note the use of the feature,
- -- and also check the relevant restriction (No_Implementation_Pragmas).
+ -- Called for all GNAT defined pragmas to check the relevant restriction
+ -- (No_Implementation_Pragmas).
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.
function Is_Configuration_Pragma return Boolean;
-- Deterermines if the placement of the current pragma is appropriate
- -- for a configuration pragma (precedes the current compilation unit)
+ -- for a configuration pragma (precedes the current compilation unit).
+
+ function Is_In_Context_Clause return Boolean;
+ -- Returns True if pragma appears within the context clause of a unit,
+ -- and False for any other placement (does not generate any messages).
+
+ function Is_Static_String_Expression (Arg : Node_Id) return Boolean;
+ -- Analyzes the argument, and determines if it is a static string
+ -- expression, returns True if so, False if non-static or not String.
procedure Pragma_Misplaced;
-- Issue fatal error message for misplaced pragma
-- Shared is an obsolete Ada 83 pragma, treated as being identical
-- in effect to pragma Atomic.
+ procedure Process_Compile_Time_Warning_Or_Error;
+ -- Common processing for Compile_Time_Error and Compile_Time_Warning
+
procedure Process_Convention (C : out Convention_Id; E : out Entity_Id);
-- Common procesing for Convention, Interface, Import and Export.
-- Checks first two arguments of pragma, and sets the appropriate
-- 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 (Warn : Boolean);
+ -- Common processing for Restrictions and Restriction_Warnings pragmas.
+ -- Warn is False for Restrictions, True for Restriction_Warnings.
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.
+
+ ---------------------
+ -- Ada_2005_Pragma --
+ ---------------------
+
+ procedure Ada_2005_Pragma is
+ begin
+ if Ada_Version <= Ada_95 then
+ Check_Restriction (No_Implementation_Pragmas, N);
+ end if;
+ end Ada_2005_Pragma;
+
--------------------------
-- 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;
------------------------------------------
end if;
end Check_Arg_Is_Task_Dispatching_Policy;
+ ---------------------
+ -- Check_Arg_Order --
+ ---------------------
+
+ procedure Check_Arg_Order (Names : Name_List) is
+ Arg : Node_Id;
+
+ Highest_So_Far : Natural := 0;
+ -- Highest index in Names seen do far
+
+ begin
+ Arg := Arg1;
+ for J in 1 .. Arg_Count loop
+ if Chars (Arg) /= No_Name then
+ for K in Names'Range loop
+ if Chars (Arg) = Names (K) then
+ if K < Highest_So_Far then
+ Error_Msg_Name_1 := Chars (N);
+ Error_Msg_N
+ ("parameters out of order for pragma%", Arg);
+ Error_Msg_Name_1 := Names (K);
+ Error_Msg_Name_2 := Names (Highest_So_Far);
+ Error_Msg_N ("\% must appear before %", Arg);
+ raise Pragma_Exit;
+
+ else
+ Highest_So_Far := K;
+ end if;
+ end if;
+ end loop;
+ end if;
+
+ Arg := Next (Arg);
+ end loop;
+ end Check_Arg_Order;
+
--------------------------------
-- Check_At_Least_N_Arguments --
--------------------------------
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));
+ Typ : constant Entity_Id :=
+ Etype (Defining_Identifier (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;
+
+ if Is_Controlled (Typ) then
+ Error_Msg_N
+ ("component of unchecked union cannot be controlled", Comp);
+
+ elsif Has_Task (Typ) then
+ Error_Msg_N
+ ("component of unchecked union cannot have tasks", Comp);
+ 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
procedure Check_Interrupt_Or_Attach_Handler is
Arg1_X : constant Node_Id := Expression (Arg1);
+ Handler_Proc, Proc_Scope : Entity_Id;
begin
Analyze (Arg1_X);
- if not Is_Entity_Name (Arg1_X) then
- Error_Pragma_Arg
- ("argument of pragma% must be entity name", Arg1);
-
- elsif Prag_Id = Pragma_Interrupt_Handler then
- Check_Restriction (No_Dynamic_Interrupts, N);
+ if Prag_Id = Pragma_Interrupt_Handler then
+ Check_Restriction (No_Dynamic_Attachment, N);
end if;
- declare
- Prot_Proc : Entity_Id := Empty;
- Prot_Type : Entity_Id;
- Found : Boolean := False;
-
- begin
- if not Is_Overloaded (Arg1_X) then
- Prot_Proc := Entity (Arg1_X);
-
- else
- declare
- It : Interp;
- Index : Interp_Index;
-
- begin
- Get_First_Interp (Arg1_X, Index, It);
- while Present (It.Nam) loop
- Prot_Proc := It.Nam;
-
- if Ekind (Prot_Proc) = E_Procedure
- and then No (First_Formal (Prot_Proc))
- then
- if not Found then
- Found := True;
- Set_Entity (Arg1_X, Prot_Proc);
- Set_Is_Overloaded (Arg1_X, False);
- else
- Error_Pragma_Arg
- ("ambiguous handler name for pragma% ", Arg1);
- end if;
- end if;
-
- Get_Next_Interp (Index, It);
- end loop;
-
- if not Found then
- Error_Pragma_Arg
- ("argument of pragma% must be parameterless procedure",
- Arg1);
- else
- Prot_Proc := Entity (Arg1_X);
- end if;
- end;
- end if;
-
- Prot_Type := Scope (Prot_Proc);
-
- if Ekind (Prot_Proc) /= E_Procedure
- or else Ekind (Prot_Type) /= E_Protected_Type
- then
- Error_Pragma_Arg
- ("argument of pragma% must be protected procedure",
- Arg1);
- end if;
+ Handler_Proc := Find_Unique_Parameterless_Procedure (Arg1_X, Arg1);
+ Proc_Scope := Scope (Handler_Proc);
- if not Is_Library_Level_Entity (Prot_Type) then
- Error_Pragma_Arg
- ("pragma% requires library level entity", Arg1);
- end if;
+ -- On AAMP only, a pragma Interrupt_Handler is supported for
+ -- nonprotected parameterless procedures.
- if Present (First_Formal (Prot_Proc)) then
+ if not AAMP_On_Target
+ or else Prag_Id = Pragma_Attach_Handler
+ then
+ if Ekind (Proc_Scope) /= E_Protected_Type then
Error_Pragma_Arg
- ("argument of pragma% must be parameterless procedure",
- Arg1);
+ ("argument of pragma% must be protected procedure", Arg1);
end if;
- if Parent (N) /=
- Protected_Definition (Parent (Prot_Type))
- then
+ if Parent (N) /= Protected_Definition (Parent (Proc_Scope)) then
Error_Pragma ("pragma% must be in protected definition");
end if;
+ end if;
- end;
+ 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
+ ("argument for pragma% must be library level entity", Arg1);
+ end if;
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);
Analyze (Expression (Arg1));
- if Unit_Kind = N_Generic_Subprogram_Declaration
+ if Unit_Kind = N_Generic_Subprogram_Declaration
or else Unit_Kind = N_Subprogram_Declaration
then
Unit_Name := Defining_Entity (Unit_Node);
- elsif Unit_Kind = N_Function_Instantiation
- or else Unit_Kind = N_Package_Instantiation
- or else Unit_Kind = N_Procedure_Instantiation
- then
+ elsif Unit_Kind in N_Generic_Instantiation then
Unit_Name := Defining_Entity (Unit_Node);
else
Pragma_Misplaced;
elsif (Nkind (Parent_Node) = N_Generic_Package_Declaration
- or else Nkind (Parent_Node)
- = N_Generic_Subprogram_Declaration)
+ or else Nkind (Parent_Node) =
+ N_Generic_Subprogram_Declaration)
and then Plist = Generic_Formal_Declarations (Parent_Node)
then
Pragma_Misplaced;
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 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;
else
Analyze (Id);
end if;
-
end Find_Program_Unit_Name;
+ -----------------------------------------
+ -- Find_Unique_Parameterless_Procedure --
+ -----------------------------------------
+
+ function Find_Unique_Parameterless_Procedure
+ (Name : Entity_Id;
+ Arg : Node_Id) return Entity_Id
+ is
+ Proc : Entity_Id := Empty;
+
+ begin
+ -- The body of this procedure needs some comments ???
+
+ if not Is_Entity_Name (Name) then
+ Error_Pragma_Arg
+ ("argument of pragma% must be entity name", Arg);
+
+ elsif not Is_Overloaded (Name) then
+ Proc := Entity (Name);
+
+ if Ekind (Proc) /= E_Procedure
+ or else Present (First_Formal (Proc)) then
+ Error_Pragma_Arg
+ ("argument of pragma% must be parameterless procedure", Arg);
+ end if;
+
+ else
+ declare
+ Found : Boolean := False;
+ It : Interp;
+ Index : Interp_Index;
+
+ begin
+ Get_First_Interp (Name, Index, It);
+ while Present (It.Nam) loop
+ Proc := It.Nam;
+
+ if Ekind (Proc) = E_Procedure
+ and then No (First_Formal (Proc))
+ then
+ if not Found then
+ Found := True;
+ Set_Entity (Name, Proc);
+ Set_Is_Overloaded (Name, False);
+ else
+ Error_Pragma_Arg
+ ("ambiguous handler name for pragma% ", Arg);
+ end if;
+ end if;
+
+ Get_Next_Interp (Index, It);
+ end loop;
+
+ if not Found then
+ Error_Pragma_Arg
+ ("argument of pragma% must be parameterless procedure",
+ Arg);
+ else
+ Proc := Entity (Name);
+ end if;
+ end;
+ end if;
+
+ return Proc;
+ end Find_Unique_Parameterless_Procedure;
+
-------------------------
-- Gather_Associations --
-------------------------
-- 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;
- ----------------------
- -- Pragma_Misplaced --
- ----------------------
+ --------------------------
+ -- Is_In_Context_Clause --
+ --------------------------
+
+ function Is_In_Context_Clause return Boolean is
+ Plist : List_Id;
+ Parent_Node : Node_Id;
- procedure Pragma_Misplaced is
+ begin
+ if not Is_List_Member (N) then
+ return False;
+
+ else
+ Plist := List_Containing (N);
+ Parent_Node := Parent (Plist);
+
+ if Parent_Node = Empty
+ or else Nkind (Parent_Node) /= N_Compilation_Unit
+ or else Context_Items (Parent_Node) /= Plist
+ then
+ return False;
+ end if;
+ end if;
+
+ return True;
+ end Is_In_Context_Clause;
+
+ ---------------------------------
+ -- Is_Static_String_Expression --
+ ---------------------------------
+
+ function Is_Static_String_Expression (Arg : Node_Id) return Boolean is
+ Argx : constant Node_Id := Get_Pragma_Arg (Arg);
+
+ begin
+ Analyze_And_Resolve (Argx);
+ return Is_OK_Static_Expression (Argx)
+ and then Nkind (Argx) = N_String_Literal;
+ end Is_Static_String_Expression;
+
+ ----------------------
+ -- Pragma_Misplaced --
+ ----------------------
+
+ procedure Pragma_Misplaced is
begin
Error_Pragma ("incorrect placement of pragma%");
end Pragma_Misplaced;
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
end if;
end Process_Atomic_Shared_Volatile;
+ -------------------------------------------
+ -- Process_Compile_Time_Warning_Or_Error --
+ -------------------------------------------
+
+ procedure Process_Compile_Time_Warning_Or_Error is
+ 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
+ declare
+ Str : constant String_Id :=
+ Strval (Get_Pragma_Arg (Arg2));
+ Len : constant Int := String_Length (Str);
+ Cont : Boolean;
+ Ptr : Nat;
+ CC : Char_Code;
+ C : Character;
+
+ begin
+ Cont := False;
+ Ptr := 1;
+
+ -- Loop through segments of message separated by line
+ -- feeds. We output these segments as separate messages
+ -- with continuation marks for all but the first.
+
+ loop
+ Error_Msg_Strlen := 0;
+
+ -- Loop to copy characters from argument to error
+ -- message string buffer.
+
+ loop
+ exit when Ptr > Len;
+ CC := Get_String_Char (Str, Ptr);
+ Ptr := Ptr + 1;
+
+ -- Ignore wide chars ??? else store character
+
+ if In_Character_Range (CC) then
+ C := Get_Character (CC);
+ exit when C = ASCII.LF;
+ Error_Msg_Strlen := Error_Msg_Strlen + 1;
+ Error_Msg_String (Error_Msg_Strlen) := C;
+ end if;
+ end loop;
+
+ -- Here with one line ready to go
+
+ Error_Msg_Warn := Prag_Id = Pragma_Compile_Time_Warning;
+
+ if Cont = False then
+ Error_Msg_N ("<~", Arg1);
+ Cont := True;
+ else
+ Error_Msg_N ("\<~", Arg1);
+ end if;
+
+ exit when Ptr > Len;
+ end loop;
+ end;
+ end if;
+ end if;
+ end Process_Compile_Time_Warning_Or_Error;
+
------------------------
-- Process_Convention --
------------------------
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
procedure Set_Convention_From_Pragma (E : Entity_Id) is
begin
+ -- Ada 2005 (AI-430): Check invalid attempt to change convention
+ -- for an overridden dispatching operation. Technically this is
+ -- an amendment and should only be done in Ada 2005 mode.
+ -- However, this is clearly a mistake, since the problem that is
+ -- addressed by this AI is that there is a clear gap in the RM!
+
+ if Is_Dispatching_Operation (E)
+ and then Present (Overridden_Operation (E))
+ and then C /= Convention (Overridden_Operation (E))
+ then
+ Error_Pragma_Arg
+ ("cannot change convention for " &
+ "overridden dispatching operation",
+ Arg1);
+ end if;
+
+ -- Set the convention
+
Set_Convention (E, C);
Set_Has_Convention_Pragma (E);
begin
Check_At_Least_N_Arguments (2);
- Check_Arg_Is_Identifier (Arg1);
Check_Optional_Identifier (Arg1, Name_Convention);
+ Check_Arg_Is_Identifier (Arg1);
Cname := Chars (Expression (Arg1));
-- C_Pass_By_Copy is treated as a synonym for convention C
-- 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));
C := Convention_C;
end if;
- Check_Arg_Is_Local_Name (Arg2);
Check_Optional_Identifier (Arg2, Name_Entity);
+ Check_Arg_Is_Local_Name (Arg2);
Id := Expression (Arg2);
Analyze (Id);
Error_Pragma_Arg ("entity name required", Arg2);
end if;
+ if Ekind (Entity (Id)) = E_Enumeration_Literal then
+ Error_Pragma ("enumeration literal not allowed for pragma%");
+ end if;
+
E := Entity (Id);
-- 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
and then Ekind (E) /= E_Variable
and then not
(Is_Access_Type (E)
- and then Ekind (Designated_Type (E)) = E_Subprogram_Type)
+ and then Ekind (Designated_Type (E)) = E_Subprogram_Type)
then
Error_Pragma_Arg
("second argument of pragma% must be subprogram (type)",
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;
- return Base_Type (Entity (Ptype)) = Base_Type (Etype (Formal));
+ -- 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)));
+
+ -- 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));
else
Dval := Default_Value (Formal);
- if not Present (Dval) then
+ if No (Dval) then
Error_Msg_NE
("optional formal& does not have default value!",
Arg_First_Optional_Parameter, Formal);
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;
--------------------------
or else
Ekind (Def_Id) = E_Constant
then
+ -- We do not permit Import to apply to a renaming declaration
+
+ if Present (Renamed_Object (Def_Id)) then
+ Error_Pragma_Arg
+ ("pragma% not allowed for object renaming", Arg2);
+
-- 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)))
+ elsif Present (Expression (Parent (Def_Id)))
+ and then Comes_From_Source (Expression (Parent (Def_Id)))
then
Error_Msg_Sloc := Sloc (Def_Id);
Error_Pragma_Arg
else
Set_Imported (Def_Id);
- Set_Is_Public (Def_Id);
Process_Interface_Name (Def_Id, Arg3, Arg4);
+
+ -- 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.
+
+ -- 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)
-- 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;
end if;
end loop;
- -- When the convention is Java, we also allow Import to be given
- -- for packages, exceptions, and record components.
+ -- When the convention is Java or CIL, we also allow Import to be
+ -- given for packages, generic 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)
+ elsif (C = Convention_Java or else C = Convention_CIL)
+ and then
+ (Ekind (Def_Id) = E_Package
+ or else Ekind (Def_Id) = E_Generic_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);
Process_Interface_Name (Def_Id, Arg3, Arg4);
+ -- Import a CPP class
+
+ elsif Is_Record_Type (Def_Id)
+ and then C = Convention_CPP
+ then
+ if not Is_Tagged_Type (Def_Id) then
+ Error_Msg_Sloc := Sloc (Def_Id);
+ Error_Pragma_Arg ("imported 'C'P'P type must be tagged", Arg2);
+
+ else
+ -- Types treated as CPP classes are treated as limited, but we
+ -- don't require them to be declared this way. A warning is
+ -- issued to encourage the user to declare them as limited.
+ -- This is not an error, for compatibility reasons, because
+ -- these types have been supported this way for some time.
+
+ if not Is_Limited_Type (Def_Id) then
+ Error_Msg_N
+ ("imported 'C'P'P type should be " &
+ "explicitly declared limited?",
+ Get_Pragma_Arg (Arg2));
+ Error_Msg_N
+ ("\type will be considered limited",
+ Get_Pragma_Arg (Arg2));
+ end if;
+
+ Set_Is_CPP_Class (Def_Id);
+ Set_Is_Limited_Record (Def_Id);
+ end if;
+
else
Error_Pragma_Arg
("second argument of pragma% must be object or subprogram",
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;
Subp := Entity (Subp_Id);
if Subp = Any_Id then
+
+ -- If previous error, avoid cascaded errors
+
Applies := True;
+ Effective := True;
else
Make_Inline (Subp);
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) = ' '
+ and then VM_Target /= CLI_Target)
+ or else Get_Character (C) = ',')
then
Error_Msg_N
("?interface name contains illegal character", SN);
begin
if No (Link_Arg) then
if No (Ext_Arg) then
+ if VM_Target = CLI_Target
+ and then Ekind (Subprogram_Def) = E_Package
+ and then Nkind (Parent (Subprogram_Def)) =
+ N_Package_Specification
+ and then Present (Generic_Parent (Parent (Subprogram_Def)))
+ then
+ Set_Interface_Name
+ (Subprogram_Def,
+ Interface_Name
+ (Generic_Parent (Parent (Subprogram_Def))));
+ end if;
+
return;
elsif Chars (Ext_Arg) = Name_Link_Name then
-- 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
else
Start_String;
- Store_String_Char (Get_Char_Code ('*'));
+
+ if VM_Target = No_VM then
+ Store_String_Char (Get_Char_Code ('*'));
+ end if;
+
String_Val := Strval (Expr_Value_S (Link_Nam));
for J in 1 .. String_Length (String_Val) loop
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
+ (Warn : Boolean)
+ 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.
+
+ ---------------------
+ -- 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;
+
+ -- 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;
+
+ -- If this is a warning, then set the warning unless we already
+ -- have a real restriction active (we never want a warning to
+ -- override a real restriction).
+
+ if Warn then
+ if not Restriction_Active (R_Id) then
+ Set_Restriction (R_Id, N);
+ Restriction_Warnings (R_Id) := True;
+ end if;
+
+ -- If real restriction case, then set it and make sure that the
+ -- restriction warning flag is off, since a real restriction
+ -- always overrides a warning.
+
+ else
+ Set_Restriction (R_Id, N);
+ Restriction_Warnings (R_Id) := False;
+ 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 RM
+ -- H.4(12). Restriction_Warnings never affects generated code
+ -- so this is done only in the real restriction case.
+
+ if R_Id = No_Exceptions and then not Warn 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);
+ end if;
+
+ -- Restriction pragma is active
+
+ Val := Expr_Value (Expr);
+
+ if not UI_Is_In_Int_Range (Val) then
+ Error_Pragma_Arg
+ ("pragma ignored, value too large?", Arg);
+ end if;
+
+ -- Warning case. If the real restriction is active, then we
+ -- ignore the request, since warning never overrides a real
+ -- restriction. Otherwise we set the proper warning. Note that
+ -- this circuit sets the warning again if it is already set,
+ -- which is what we want, since the constant may have changed.
+
+ if Warn then
+ if not Restriction_Active (R_Id) then
+ Set_Restriction
+ (R_Id, N, Integer (UI_To_Int (Val)));
+ Restriction_Warnings (R_Id) := True;
+ end if;
+
+ -- Real restriction case, set restriction and make sure warning
+ -- flag is off since real restriction always overrides warning.
+
+ else
+ Set_Restriction (R_Id, N, Integer (UI_To_Int (Val)));
+ Restriction_Warnings (R_Id) := False;
+ 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;
-
- when Division_Check =>
- Scope_Suppress.Division_Checks := Suppress_Case;
+ if not Suppress_Case
+ and then (C = All_Checks or else C = Overflow_Check)
+ then
+ Opt.Overflow_Checks_Unsuppressed := True;
+ end if;
- when Elaboration_Check =>
- Scope_Suppress.Elaboration_Checks := Suppress_Case;
+ if Arg_Count = 1 then
- when Index_Check =>
- Scope_Suppress.Index_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 Length_Check =>
- Scope_Suppress.Length_Checks := Suppress_Case;
+ if C = All_Checks then
- when Overflow_Check =>
- Scope_Suppress.Overflow_Checks := Suppress_Case;
+ -- For All_Checks, we set all specific checks with the
+ -- exception of Elaboration_Check, which is handled specially
+ -- because of not wanting All_Checks to have the effect of
+ -- deactivating static elaboration order processing.
- when Range_Check =>
- Scope_Suppress.Range_Checks := Suppress_Case;
+ for J in Scope_Suppress'Range loop
+ if J /= Elaboration_Check then
+ Scope_Suppress (J) := Suppress_Case;
+ end if;
+ end loop;
- when Storage_Check =>
- Scope_Suppress.Storage_Checks := Suppress_Case;
+ -- If not All_Checks, just set appropriate entry. Note that we
+ -- will set Elaboration_Check if this is explicitly specified.
- when Tag_Check =>
- Scope_Suppress.Tag_Checks := Suppress_Case;
+ 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;
+
+ -- Loop through homonyms. As noted below, in the case of a package
+ -- spec, only homonyms within the package spec are considered.
- -- If we are within a package specification, the
- -- pragma only applies to homonyms in the same scope.
+ loop
+ Suppress_Unsuppress_Echeck (E, C);
- 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));
+ if Is_Generic_Instance (E)
+ and then Is_Subprogram (E)
+ and then Present (Alias (E))
+ then
+ Suppress_Unsuppress_Echeck (Alias (E), C);
+ end if;
- E := Homonym (E);
- end loop;
- end if;
- 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;
+ ---------------------------
+ -- Set_Ravenscar_Profile --
+ ---------------------------
+
+ -- The tasks to be done here are
+
+ -- Set required policies
+
+ -- pragma Task_Dispatching_Policy (FIFO_Within_Priorities)
+ -- pragma Locking_Policy (Ceiling_Locking)
+
+ -- Set Detect_Blocking mode
+
+ -- Set required restrictions (see System.Rident for detailed list)
+
+ 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 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
- Error_Pragma ("unrecognized pragma%!?");
+ if Warn_On_Unrecognized_Pragma then
+ Error_Pragma ("unrecognized pragma%?");
+ else
+ return;
+ end if;
else
Prag_Id := Get_Pragma_Id (Chars (N));
end if;
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;
+ Ada_Version_Explicit := Ada_Version;
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;
+ Ada_Version_Explicit := Ada_Version;
Check_Arg_Count (0);
+ ---------------------
+ -- Ada_05/Ada_2005 --
+ ---------------------
+
+ -- pragma Ada_05;
+ -- pragma Ada_05 (LOCAL_NAME);
+
+ -- pragma Ada_2005;
+ -- pragma Ada_2005 (LOCAL_NAME):
+
+ -- Note: these pragma also have some specific processing in Par.Prag
+ -- because we want to set the Ada 2005 version mode during parsing.
+
+ when Pragma_Ada_05 | Pragma_Ada_2005 => 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_Only (Entity (E_Id));
+
+ else
+ Check_Arg_Count (0);
+ Ada_Version := Ada_05;
+ Ada_Version_Explicit := Ada_05;
+ end if;
+ end;
+
----------------------
-- All_Calls_Remote --
----------------------
Lib_Entity := Find_Lib_Unit_Name;
- -- This pragma should only apply to a RCI unit (RM E.2.3(23)).
+ -- This pragma should only apply to a RCI unit (RM E.2.3(23))
if Present (Lib_Entity)
and then not Debug_Flag_U
Error_Pragma_Arg ("ambiguous argument for pragma%", Exp);
else
- Resolve (Exp, Etype (Exp));
+ Resolve (Exp);
end if;
Next (Arg);
-- Assert --
------------
- -- pragma Assert (Boolean_EXPRESSION [, static_string_EXPRESSION]);
+ -- pragma Assert ([Check =>] Boolean_EXPRESSION
+ -- [, [Message =>] Static_String_EXPRESSION]);
- when Pragma_Assert =>
- GNAT_Pragma;
- Check_No_Identifiers;
+ when Pragma_Assert => Assert : declare
+ Expr : Node_Id;
+
+ begin
+ Ada_2005_Pragma;
+ Check_At_Least_N_Arguments (1);
+ Check_At_Most_N_Arguments (2);
+ Check_Arg_Order ((Name_Check, Name_Message));
+ Check_Optional_Identifier (Arg1, Name_Check);
if Arg_Count > 1 then
- Check_Arg_Count (2);
+ Check_Optional_Identifier (Arg2, Name_Message);
Check_Arg_Is_Static_Expression (Arg2, Standard_String);
end if;
-- directly, or it may cause insertion of actions that would
-- escape the attempt to suppress the assertion code.
+ Expr := Expression (Arg1);
+
if Expander_Active and not Assertions_Enabled then
Rewrite (N,
Make_If_Statement (Loc,
Condition =>
Make_And_Then (Loc,
Left_Opnd => New_Occurrence_Of (Standard_False, Loc),
- Right_Opnd => Get_Pragma_Arg (Arg1)),
+ Right_Opnd => Expr),
Then_Statements => New_List (
Make_Null_Statement (Loc))));
-- and resolve the expression.
else
- Analyze_And_Resolve (Expression (Arg1), Any_Boolean);
+ Analyze_And_Resolve (Expr, Any_Boolean);
end if;
- ---------------
- -- AST_Entry --
- ---------------
-
- -- pragma AST_Entry (entry_IDENTIFIER);
+ -- If assertion is of the form (X'First = literal), where X is
+ -- formal parameter, then set Low_Bound_Known flag on this formal.
- when Pragma_AST_Entry => AST_Entry : declare
- Ent : Node_Id;
+ if Nkind (Expr) = N_Op_Eq then
+ declare
+ Right : constant Node_Id := Right_Opnd (Expr);
+ Left : constant Node_Id := Left_Opnd (Expr);
+ begin
+ if Nkind (Left) = N_Attribute_Reference
+ and then Attribute_Name (Left) = Name_First
+ and then Is_Entity_Name (Prefix (Left))
+ and then Is_Formal (Entity (Prefix (Left)))
+ and then Nkind (Right) = N_Integer_Literal
+ then
+ Set_Low_Bound_Known (Entity (Prefix (Left)));
+ end if;
+ end;
+ end if;
+ end Assert;
+
+ ----------------------
+ -- Assertion_Policy --
+ ----------------------
+
+ -- pragma Assertion_Policy (Check | Ignore)
+
+ when Pragma_Assertion_Policy =>
+ Ada_2005_Pragma;
+ Check_Arg_Count (1);
+ Check_Arg_Is_One_Of (Arg1, Name_Check, Name_Ignore);
+ Assertions_Enabled := Chars (Expression (Arg1)) = Name_Check;
+
+ ---------------
+ -- AST_Entry --
+ ---------------
+
+ -- pragma AST_Entry (entry_IDENTIFIER);
+
+ when Pragma_AST_Entry => AST_Entry : declare
+ Ent : Node_Id;
begin
GNAT_Pragma;
procedure Process_Async_Pragma is
begin
- if not Present (L) then
+ if No (L) then
Set_Is_Asynchronous (Nm);
return;
end if;
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_Error --
+ ------------------------
+
+ -- pragma Compile_Time_Error
+ -- (boolean_EXPRESSION, static_string_EXPRESSION);
+
+ when Pragma_Compile_Time_Error =>
+ Process_Compile_Time_Warning_Or_Error;
+
+ --------------------------
+ -- Compile_Time_Warning --
+ --------------------------
+
+ -- pragma Compile_Time_Warning
+ -- (boolean_EXPRESSION, static_string_EXPRESSION);
+
+ when Pragma_Compile_Time_Warning =>
+ Process_Compile_Time_Warning_Or_Error;
+
+ -----------------------------
+ -- Complete_Representation --
+ -----------------------------
+
+ -- pragma Complete_Representation;
+
+ when Pragma_Complete_Representation =>
+ GNAT_Pragma;
+ Check_Arg_Count (0);
+
+ if Nkind (Parent (N)) /= N_Record_Representation_Clause then
+ Error_Pragma
+ ("pragma & must appear within record representation clause");
+ end if;
+
----------------------------
-- 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_Arg_Order ((Name_Convention, Name_Entity));
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_Order ((Name_Name, Name_Convention));
+ 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 --
---------------
-- pragma CPP_Class ([Entity =>] local_NAME)
when Pragma_CPP_Class => CPP_Class : declare
- Arg : Node_Id;
- Typ : Entity_Id;
- Default_DTC : Entity_Id := Empty;
- VTP_Type : constant Entity_Id := RTE (RE_Vtable_Ptr);
- C : Entity_Id;
- Tag_C : Entity_Id;
+ Arg : Node_Id;
+ Typ : Entity_Id;
begin
+ if Warn_On_Obsolescent_Feature then
+ Error_Msg_N
+ ("'G'N'A'T pragma cpp'_class is now obsolete; replace it" &
+ " by pragma import?", N);
+ end if;
+
GNAT_Pragma;
Check_Arg_Count (1);
Check_Optional_Identifier (Arg1, Name_Entity);
Typ := Entity (Arg);
- if not Is_Record_Type (Typ) then
- Error_Pragma_Arg ("pragma% applicable to a record, "
- & "tagged record or record extension", Arg1);
- end if;
-
- Default_DTC := First_Component (Typ);
- while Present (Default_DTC)
- and then Etype (Default_DTC) /= VTP_Type
- loop
- Next_Component (Default_DTC);
- end loop;
-
- -- Case of non tagged type
-
if not Is_Tagged_Type (Typ) then
- Set_Is_CPP_Class (Typ);
-
- if Present (Default_DTC) then
- Error_Pragma_Arg
- ("only tagged records can contain vtable pointers", Arg1);
- end if;
-
- -- Case of tagged type with no vtable ptr
-
- -- What is test for Typ = Root_Typ (Typ) about here ???
-
- elsif Is_Tagged_Type (Typ)
- and then Typ = Root_Type (Typ)
- and then No (Default_DTC)
- then
- Error_Pragma_Arg
- ("a cpp_class must contain a vtable pointer", Arg1);
-
- -- Tagged type that has a vtable ptr
-
- elsif Present (Default_DTC) then
- Set_Is_CPP_Class (Typ);
- Set_Is_Limited_Record (Typ);
- Set_Is_Tag (Default_DTC);
- Set_DT_Entry_Count (Default_DTC, No_Uint);
-
- -- 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));
-
- -- 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);
- C := First_Entity (Typ);
-
- if C = Tag_C then
- Set_First_Entity (Typ, Next_Entity (Tag_C));
+ Error_Pragma_Arg ("pragma% applicable to tagged types ", Arg1);
+ end if;
- else
- while Next_Entity (C) /= Tag_C loop
- Next_Entity (C);
- end loop;
+ -- Types treated as CPP classes are treated as limited, but we
+ -- don't require them to be declared this way. A warning is issued
+ -- to encourage the user to declare them as limited. This is not
+ -- an error, for compatibility reasons, because these types have
+ -- been supported this way for some time.
- Set_Next_Entity (C, Next_Entity (Tag_C));
- end if;
- end if;
+ if not Is_Limited_Type (Typ) then
+ Error_Msg_N
+ ("imported 'C'P'P type should be " &
+ "explicitly declared limited?",
+ Get_Pragma_Arg (Arg1));
+ Error_Msg_N
+ ("\type will be considered limited",
+ Get_Pragma_Arg (Arg1));
end if;
+
+ Set_Is_CPP_Class (Typ);
+ Set_Is_Limited_Record (Typ);
+ Set_Convention (Typ, Convention_CPP);
end CPP_Class;
---------------------
-- CPP_Constructor --
---------------------
- -- pragma CPP_Constructor ([Entity =>] LOCAL_NAME);
+ -- pragma CPP_Constructor ([Entity =>] LOCAL_NAME
+ -- [, [External_Name =>] static_string_EXPRESSION ]
+ -- [, [Link_Name =>] static_string_EXPRESSION ]);
when Pragma_CPP_Constructor => CPP_Constructor : declare
Id : Entity_Id;
begin
GNAT_Pragma;
- Check_Arg_Count (1);
+ Check_At_Least_N_Arguments (1);
+ Check_At_Most_N_Arguments (3);
Check_Optional_Identifier (Arg1, Name_Entity);
Check_Arg_Is_Local_Name (Arg1);
and then Is_Class_Wide_Type (Etype (Def_Id))
and then Is_CPP_Class (Etype (Etype (Def_Id)))
then
- -- What the heck is this??? this pragma allows only 1 arg
-
if Arg_Count >= 2 then
- Check_At_Most_N_Arguments (3);
+ Set_Imported (Def_Id);
+ Set_Is_Public (Def_Id);
Process_Interface_Name (Def_Id, Arg2, Arg3);
end if;
-- CPP_Virtual --
-----------------
- -- pragma CPP_Virtual
- -- [Entity =>] LOCAL_NAME
- -- [ [Vtable_Ptr =>] LOCAL_NAME,
- -- [Position =>] static_integer_EXPRESSION]);
-
when Pragma_CPP_Virtual => CPP_Virtual : declare
- Arg : Node_Id;
- Typ : Entity_Id;
- Subp : Entity_Id;
- VTP_Type : constant Entity_Id := RTE (RE_Vtable_Ptr);
- DTC : Entity_Id;
- V : Uint;
-
begin
- GNAT_Pragma;
-
- if Arg_Count = 3 then
- Check_Optional_Identifier (Arg2, "vtable_ptr");
-
- -- We allow Entry_Count as well as Position for the third
- -- parameter for back compatibility with versions of GNAT
- -- before version 3.12. The documentation has always said
- -- Position, but the code up to 3.12 said Entry_Count.
-
- if Chars (Arg3) /= Name_Position then
- Check_Optional_Identifier (Arg3, "entry_count");
- end if;
-
- else
- Check_Arg_Count (1);
- end if;
-
- Check_Optional_Identifier (Arg1, Name_Entity);
- Check_Arg_Is_Local_Name (Arg1);
-
- -- First argument must be a subprogram name
-
- Arg := Expression (Arg1);
- Find_Program_Unit_Name (Arg);
-
- if Etype (Arg) = Any_Type then
- return;
- else
- Subp := Entity (Arg);
- end if;
-
- if not (Is_Subprogram (Subp)
- and then Is_Dispatching_Operation (Subp))
- then
- Error_Pragma_Arg
- ("pragma% must reference a primitive operation", Arg1);
- end if;
-
- Typ := Find_Dispatching_Type (Subp);
-
- -- If only one Argument defaults are :
- -- . DTC_Entity is the default Vtable pointer
- -- . DT_Position will be set at the freezing point
-
- if Arg_Count = 1 then
- Set_DTC_Entity (Subp, Tag_Component (Typ));
- return;
- end if;
-
- -- Second argument is a component name of type Vtable_Ptr
-
- Arg := Expression (Arg2);
-
- if Nkind (Arg) /= N_Identifier then
- Error_Msg_NE ("must be a& component name", Arg, Typ);
- raise Pragma_Exit;
- end if;
-
- DTC := First_Component (Typ);
- while Present (DTC) and then Chars (DTC) /= Chars (Arg) loop
- Next_Component (DTC);
- end loop;
-
- if No (DTC) then
- Error_Msg_NE ("must be a& component name", Arg, Typ);
- raise Pragma_Exit;
-
- elsif Etype (DTC) /= VTP_Type then
- Wrong_Type (Arg, VTP_Type);
- return;
- end if;
-
- -- Third argument is an integer (DT_Position)
-
- Arg := Expression (Arg3);
- 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",
- Arg3);
-
- else
- V := Expr_Value (Expression (Arg3));
-
- if V <= 0 then
- Error_Pragma_Arg
- ("third argument of pragma% must be positive",
- Arg3);
-
- else
- Set_DTC_Entity (Subp, DTC);
- Set_DT_Position (Subp, V);
- end if;
+ if Warn_On_Obsolescent_Feature then
+ Error_Msg_N
+ ("'G'N'A'T pragma cpp'_virtual is now obsolete and has " &
+ "no effect?", N);
end if;
end CPP_Virtual;
-- CPP_Vtable --
----------------
- -- pragma CPP_Vtable (
- -- [Entity =>] LOCAL_NAME
- -- [Vtable_Ptr =>] LOCAL_NAME,
- -- [Entry_Count =>] static_integer_EXPRESSION);
-
when Pragma_CPP_Vtable => CPP_Vtable : declare
- Arg : Node_Id;
- Typ : Entity_Id;
- VTP_Type : constant Entity_Id := RTE (RE_Vtable_Ptr);
- DTC : Entity_Id;
- V : Uint;
- Elmt : Elmt_Id;
-
begin
- GNAT_Pragma;
- Check_Arg_Count (3);
- Check_Optional_Identifier (Arg1, Name_Entity);
- Check_Optional_Identifier (Arg2, "vtable_ptr");
- Check_Optional_Identifier (Arg3, "entry_count");
- Check_Arg_Is_Local_Name (Arg1);
-
- -- First argument is a record type name
-
- Arg := Expression (Arg1);
- Analyze (Arg);
-
- if Etype (Arg) = Any_Type then
- return;
- else
- Typ := Entity (Arg);
- end if;
-
- if not (Is_Tagged_Type (Typ) and then Is_CPP_Class (Typ)) then
- Error_Pragma_Arg ("'C'P'P_Class tagged type expected", Arg1);
- end if;
-
- -- Second argument is a component name of type Vtable_Ptr
-
- Arg := Expression (Arg2);
-
- if Nkind (Arg) /= N_Identifier then
- Error_Msg_NE ("must be a& component name", Arg, Typ);
- raise Pragma_Exit;
- end if;
-
- DTC := First_Component (Typ);
- while Present (DTC) and then Chars (DTC) /= Chars (Arg) loop
- Next_Component (DTC);
- end loop;
-
- if No (DTC) then
- Error_Msg_NE ("must be a& component name", Arg, Typ);
- raise Pragma_Exit;
-
- elsif Etype (DTC) /= VTP_Type then
- Wrong_Type (DTC, VTP_Type);
- return;
-
- -- 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
- then
- Set_Is_Tag (Tag_Component (Typ), False);
- Set_Is_Tag (DTC, True);
- Set_DT_Entry_Count (DTC, No_Uint);
+ if Warn_On_Obsolescent_Feature then
+ Error_Msg_N
+ ("'G'N'A'T pragma cpp'_vtable is now obsolete and has " &
+ "no effect?", N);
end if;
+ end CPP_Vtable;
- -- Those pragmas must appear before any primitive operation
- -- definition (except inherited ones) otherwise the default
- -- may be wrong
-
- Elmt := First_Elmt (Primitive_Operations (Typ));
- while Present (Elmt) loop
- if No (Alias (Node (Elmt))) then
- Error_Msg_Sloc := Sloc (Node (Elmt));
- Error_Pragma
- ("pragma% must appear before this primitive operation");
- end if;
-
- Next_Elmt (Elmt);
- end loop;
-
- -- Third argument is an integer (DT_Entry_Count)
+ -----------
+ -- Debug --
+ -----------
- Arg := Expression (Arg3);
- Analyze_And_Resolve (Arg, Any_Integer);
+ -- pragma Debug ([boolean_EXPRESSION,] PROCEDURE_CALL_STATEMENT);
- if not Is_Static_Expression (Arg) then
- Error_Pragma_Arg
- ("entry count for pragma% must be a static expression", Arg3);
+ when Pragma_Debug => Debug : declare
+ Cond : Node_Id;
- else
- V := Expr_Value (Expression (Arg3));
+ begin
+ GNAT_Pragma;
- if V <= 0 then
- Error_Pragma_Arg
- ("entry count for pragma% must be positive", Arg3);
- else
- Set_DT_Entry_Count (DTC, V);
- end if;
- end if;
+ Cond :=
+ New_Occurrence_Of
+ (Boolean_Literals (Debug_Pragmas_Enabled and Expander_Active),
+ Loc);
- end CPP_Vtable;
+ if Arg_Count = 2 then
+ Cond :=
+ Make_And_Then (Loc,
+ Left_Opnd => Relocate_Node (Cond),
+ Right_Opnd => Expression (Arg1));
+ end if;
+
+ -- Rewrite into a conditional with an appropriate condition. We
+ -- wrap the procedure call in a block so that overhead from e.g.
+ -- use of the secondary stack does not generate execution overhead
+ -- for suppressed conditions.
+
+ Rewrite (N, Make_Implicit_If_Statement (N,
+ Condition => Cond,
+ Then_Statements => New_List (
+ Make_Block_Statement (Loc,
+ Handled_Statement_Sequence =>
+ Make_Handled_Sequence_Of_Statements (Loc,
+ Statements => New_List (
+ Relocate_Node (Debug_Statement (N))))))));
+ Analyze (N);
+ end Debug;
- -----------
- -- Debug --
- -----------
+ ------------------
+ -- Debug_Policy --
+ ------------------
- -- pragma Debug (PROCEDURE_CALL_STATEMENT);
+ -- pragma Debug_Policy (Check | Ignore)
- when Pragma_Debug => Debug : begin
+ when Pragma_Debug_Policy =>
GNAT_Pragma;
+ Check_Arg_Count (1);
+ Check_Arg_Is_One_Of (Arg1, Name_Check, Name_Ignore);
+ Debug_Pragmas_Enabled := Chars (Expression (Arg1)) = Name_Check;
- -- If assertions are enabled, and we are expanding code, then
- -- we rewrite the pragma with its corresponding procedure call
- -- and then analyze the call.
-
- if Assertions_Enabled and Expander_Active then
- Rewrite (N, Relocate_Node (Debug_Statement (N)));
- Analyze (N);
+ ---------------------
+ -- Detect_Blocking --
+ ---------------------
- -- 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.
+ -- pragma 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;
+ when Pragma_Detect_Blocking =>
+ Ada_2005_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
-- If there is no parameter, then from now on this pragma
-- applies to any enumeration, exception or tagged type
- -- defined in the current declarative part.
+ -- defined in the current declarative part, and recursively
+ -- to any nested scope.
Set_Discard_Names (Current_Scope);
return;
-- pragma Elaborate (library_unit_NAME {, library_unit_NAME});
when Pragma_Elaborate => Elaborate : declare
- Plist : List_Id;
- Parent_Node : Node_Id;
- Arg : Node_Id;
- Citem : Node_Id;
+ Arg : Node_Id;
+ Citem : Node_Id;
begin
-- Pragma must be in context items list of a compilation unit
- if not Is_List_Member (N) then
+ if not Is_In_Context_Clause then
Pragma_Misplaced;
- return;
-
- else
- Plist := List_Containing (N);
- Parent_Node := Parent (Plist);
-
- if Parent_Node = Empty
- or else Nkind (Parent_Node) /= N_Compilation_Unit
- or else Context_Items (Parent_Node) /= Plist
- then
- Pragma_Misplaced;
- return;
- end if;
- end if;
+ end if;
-- Must be at least one argument
-- (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
if Nkind (Citem) = N_Pragma
or else (Nkind (Citem) = N_With_Clause
end if;
-- Finally, the arguments must all be units mentioned in a with
- -- clause in the same context clause. Note we already checked
- -- (in Par.Prag) that the arguments are either identifiers or
+ -- clause in the same context clause. Note we already checked (in
+ -- Par.Prag) that the arguments are all identifiers or selected
+ -- components.
Arg := Arg1;
Outer : while Present (Arg) loop
- Citem := First (Plist);
-
+ Citem := First (List_Containing (N));
Inner : while Citem /= N loop
if Nkind (Citem) = N_With_Clause
and then Same_Name (Name (Citem), Expression (Arg))
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;
-------------------
-- pragma Elaborate_All (library_unit_NAME {, library_unit_NAME});
when Pragma_Elaborate_All => Elaborate_All : declare
- Plist : List_Id;
- Parent_Node : Node_Id;
- Arg : Node_Id;
- Citem : Node_Id;
+ Arg : Node_Id;
+ Citem : Node_Id;
begin
Check_Ada_83_Warning;
-- Pragma must be in context items list of a compilation unit
- if not Is_List_Member (N) then
+ if not Is_In_Context_Clause then
Pragma_Misplaced;
- return;
-
- else
- Plist := List_Containing (N);
- Parent_Node := Parent (Plist);
-
- if Parent_Node = Empty
- or else Nkind (Parent_Node) /= N_Compilation_Unit
- or else Context_Items (Parent_Node) /= Plist
- then
- Pragma_Misplaced;
- return;
- end if;
end if;
-- Must be at least one argument
Arg := Arg1;
Outr : while Present (Arg) loop
- Citem := First (Plist);
+ Citem := First (List_Containing (N));
Innr : while Citem /= N loop
if Nkind (Citem) = N_With_Clause
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;
Error_Pragma ("pragma% must refer to a spec, not a body");
else
Set_Body_Required (Cunit_Node, True);
- Set_Has_Pragma_Elaborate_Body (Cunit_Ent);
+ Set_Has_Pragma_Elaborate_Body (Cunit_Ent);
-- If we are in dynamic elaboration mode, then we suppress
-- elaboration warnings for the unit, since it is definitely
-- [,[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
- when Pragma_Eliminate => Eliminate : begin
+ -- 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 : 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 cannot " &
+ "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;
------------
begin
Check_Ada_83_Warning;
+ Check_Arg_Order
+ ((Name_Convention,
+ Name_Entity,
+ Name_External_Name,
+ Name_Link_Name));
Check_At_Least_N_Arguments (2);
Check_At_Most_N_Arguments (4);
Process_Convention (C, Def_Id);
- Note_Possible_Modification (Expression (Arg2));
+
+ if Ekind (Def_Id) /= E_Constant then
+ Note_Possible_Modification (Expression (Arg2));
+ end if;
+
Process_Interface_Name (Def_Id, Arg3, Arg4);
Set_Exported (Def_Id, Arg2);
end 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_Order ((Name_Value, Name_Link_Name));
+ 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;
+ else
+ Extensions_Allowed := False;
+ end if;
--------------
-- External --
when Pragma_External => External : declare
C : Convention_Id;
Def_Id : Entity_Id;
-
begin
GNAT_Pragma;
+ Check_Arg_Order
+ ((Name_Convention,
+ Name_Entity,
+ Name_External_Name,
+ Name_Link_Name));
Check_At_Least_N_Arguments (2);
Check_At_Most_N_Arguments (4);
Process_Convention (C, Def_Id);
-- 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;
-- Float_Representation --
--------------------------
- -- pragma Float_Representation (VAX_Float | IEEE_Float);
+ -- pragma Float_Representation (FLOAT_REP[, float_type_LOCAL_NAME]);
+
+ -- FLOAT_REP ::= VAX_Float | IEEE_Float
when Pragma_Float_Representation => Float_Representation : declare
Argx : Node_Id;
-- One argument case
if Arg_Count = 1 then
-
if Chars (Expression (Arg1)) = Name_VAX_Float then
-
if Opt.Float_Format = 'I' then
Error_Pragma ("'I'E'E'E format previously specified");
end if;
-- Two arguments, VAX_Float case
if Chars (Expression (Arg1)) = Name_VAX_Float then
-
case Digs is
when 6 => Set_F_Float (Ent);
when 9 => Set_D_Float (Ent);
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 =>
Check_Ada_83_Warning;
+ Check_Arg_Order
+ ((Name_Convention,
+ Name_Entity,
+ Name_External_Name,
+ Name_Link_Name));
Check_At_Least_N_Arguments (2);
Check_At_Most_N_Arguments (4);
Process_Import_Or_Interface;
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 --
---------------
-- pragma Interface (
- -- convention_IDENTIFIER,
- -- local_NAME );
+ -- [ Convention =>] convention_IDENTIFIER,
+ -- [ Entity =>] local_NAME
+ -- [, [External_Name =>] static_string_EXPRESSION ]
+ -- [, [Link_Name =>] static_string_EXPRESSION ]);
when Pragma_Interface =>
GNAT_Pragma;
- Check_Arg_Count (2);
- Check_No_Identifiers;
+ Check_Arg_Order
+ ((Name_Convention,
+ Name_Entity,
+ Name_External_Name,
+ Name_Link_Name));
+ Check_At_Least_N_Arguments (2);
+ Check_At_Most_N_Arguments (4);
Process_Import_Or_Interface;
--------------------
begin
GNAT_Pragma;
+ Check_Arg_Order
+ ((Name_Entity, Name_External_Name, Name_Link_Name));
Check_At_Least_N_Arguments (2);
Check_At_Most_N_Arguments (3);
Id := Expression (Arg1);
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_Order ((Name_Name, Name_State));
+ Check_Arg_Count (2);
+
+ Check_Optional_Identifier (Arg1, Name_Name);
+ Check_Optional_Identifier (Arg2, Name_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 #", Arg2);
+ exit;
+ end if;
+
+ IST_Num := IST_Num + 1;
+ end loop;
+ end Interrupt_State;
+
----------------------
-- Java_Constructor --
----------------------
-- pragma Java_Constructor ([Entity =>] LOCAL_NAME);
- when Pragma_Java_Constructor => Java_Constructor : declare
- Id : Entity_Id;
- Def_Id : Entity_Id;
- Hom_Id : Entity_Id;
+ when Pragma_CIL_Constructor | Pragma_Java_Constructor =>
+ Java_Constructor : declare
+ Id : Entity_Id;
+ Def_Id : Entity_Id;
+ Hom_Id : Entity_Id;
+ Convention : Convention_Id;
begin
GNAT_Pragma;
return;
end if;
+ case Prag_Id is
+ when Pragma_CIL_Constructor => Convention := Convention_CIL;
+ when Pragma_Java_Constructor => Convention := Convention_Java;
+ when others => null;
+ end case;
+
Hom_Id := Entity (Id);
-- Loop through homonyms
loop
Def_Id := Get_Base_Subprogram (Hom_Id);
- -- The constructor is required to be a function returning
- -- an access type whose designated type has convention Java.
+ -- The constructor is required to be a function returning an
+ -- access type whose designated type has convention Java/CIL.
if Ekind (Def_Id) = E_Function
- and then Ekind (Etype (Def_Id)) in Access_Kind
and then
- (Atree.Convention
- (Designated_Type (Etype (Def_Id))) = Convention_Java
- or else
- Atree.Convention
- (Root_Type (Designated_Type (Etype (Def_Id))))
- = Convention_Java)
+ (Is_Value_Type (Etype (Def_Id))
+ or else
+ (Ekind (Etype (Def_Id)) in Access_Kind
+ and then
+ (Atree.Convention
+ (Designated_Type (Etype (Def_Id))) = Convention
+ or else
+ Atree.Convention
+ (Root_Type (Designated_Type (Etype (Def_Id)))) =
+ Convention)))
then
Set_Is_Constructor (Def_Id);
- Set_Convention (Def_Id, Convention_Java);
+ Set_Convention (Def_Id, Convention);
+ Set_Is_Imported (Def_Id);
else
- Error_Pragma_Arg
- ("pragma% requires function returning a 'Java access type",
- Arg1);
+ if Convention = Convention_Java then
+ Error_Pragma_Arg
+ ("pragma% requires function returning a " &
+ "'Java access type", Arg1);
+ else
+ pragma Assert (Convention = Convention_CIL);
+ Error_Pragma_Arg
+ ("pragma% requires function returning a " &
+ "'CIL access type", Arg1);
+ end if;
end if;
Hom_Id := Homonym (Hom_Id);
-- java.lang.Object.Typ and that all primitives of the type
-- should be declared abstract. ???
- if not Is_Tagged_Type (Typ) or else not Is_Abstract (Typ) then
+ if not Is_Tagged_Type (Typ) or else not Is_Abstract_Type (Typ) then
Error_Pragma_Arg ("pragma% requires an abstract "
& "tagged type", Arg1);
end if;
end Java_Interface;
- -------------
- -- License --
- -------------
+ ----------------
+ -- Keep_Names --
+ ----------------
- -- pragma License (RESTRICTED | UNRESRICTED | GPL | MODIFIED_GPL);
+ -- pragma Keep_Names ([On => ] local_NAME);
- when Pragma_License =>
+ 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 --
+ -------------
+
+ -- pragma License (RESTRICTED | UNRESTRICTED | GPL | MODIFIED_GPL);
+
+ when Pragma_License =>
GNAT_Pragma;
Check_Arg_Count (1);
Check_No_Identifiers;
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_Alias (
-- [Entity =>] LOCAL_NAME
- -- [Alias =>] static_string_EXPRESSION);
+ -- [Target =>] static_string_EXPRESSION);
when Pragma_Linker_Alias =>
GNAT_Pragma;
+ Check_Arg_Order ((Name_Entity, Name_Target));
Check_Arg_Count (2);
Check_Optional_Identifier (Arg1, Name_Entity);
- Check_Optional_Identifier (Arg2, "alias");
+ Check_Optional_Identifier (Arg2, Name_Target);
Check_Arg_Is_Library_Level_Local_Name (Arg1);
Check_Arg_Is_Static_Expression (Arg2, Standard_String);
Set_Has_Gigi_Rep_Item (Entity (Expression (Arg1)));
end if;
+ ------------------------
+ -- Linker_Constructor --
+ ------------------------
+
+ -- pragma Linker_Constructor (procedure_LOCAL_NAME);
+
+ -- Code is shared with Linker_Destructor
+
+ -----------------------
+ -- Linker_Destructor --
+ -----------------------
+
+ -- pragma Linker_Destructor (procedure_LOCAL_NAME);
+
+ when Pragma_Linker_Constructor |
+ Pragma_Linker_Destructor =>
+ Linker_Constructor : declare
+ Arg1_X : Node_Id;
+ Proc : Entity_Id;
+
+ begin
+ GNAT_Pragma;
+ Check_Arg_Count (1);
+ Check_No_Identifiers;
+ Check_Arg_Is_Local_Name (Arg1);
+ Arg1_X := Expression (Arg1);
+ Analyze (Arg1_X);
+ Proc := Find_Unique_Parameterless_Procedure (Arg1_X, Arg1);
+
+ if not Is_Library_Level_Entity (Proc) then
+ Error_Pragma_Arg
+ ("argument for pragma% must be library level entity", Arg1);
+ end if;
+
+ -- The only processing required is to link this item on to the
+ -- list of rep items for the given entity. This is accomplished
+ -- by the call to Rep_Item_Too_Late (when no error is detected
+ -- and False is returned).
+
+ if Rep_Item_Too_Late (Proc, N) then
+ return;
+ else
+ Set_Has_Gigi_Rep_Item (Proc);
+ end if;
+ end Linker_Constructor;
+
--------------------
-- Linker_Options --
--------------------
-- 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))));
when Pragma_Linker_Section =>
GNAT_Pragma;
+ Check_Arg_Order ((Name_Entity, Name_Section));
Check_Arg_Count (2);
Check_Optional_Identifier (Arg1, Name_Entity);
Check_Optional_Identifier (Arg2, Name_Section);
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;
begin
GNAT_Pragma;
+ Check_Arg_Order ((Name_Entity, Name_Attribute_Name, Name_Info));
if Arg_Count = 3 then
- Check_Optional_Identifier (Arg3, "info");
+ Check_Optional_Identifier (Arg3, Name_Info);
Check_Arg_Is_Static_Expression (Arg3, Standard_String);
else
Check_Arg_Count (2);
end if;
- Check_Arg_Is_Local_Name (Arg1);
- Check_Optional_Identifier (Arg2, "attribute_name");
Check_Optional_Identifier (Arg1, Name_Entity);
+ Check_Optional_Identifier (Arg2, Name_Attribute_Name);
+ Check_Arg_Is_Local_Name (Arg1);
Check_Arg_Is_Static_Expression (Arg2, Standard_String);
Def_Id := Entity (Expression (Arg1));
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;
-----------------
Check_Arg_Count (1);
Check_Arg_Is_Integer_Literal (Arg1);
+ -------------
+ -- No_Body --
+ -------------
+
+ -- pragma No_Body;
+
+ -- The only correct use of this pragma is on its own in a file, in
+ -- which case it is specially processed (see Gnat1drv.Check_Bad_Body
+ -- and Frontend, which use Sinput.L.Source_File_Is_Pragma_No_Body to
+ -- check for a file containing nothing but a No_Body pragma). If we
+ -- attempt to process it during normal semantics processing, it means
+ -- it was misplaced.
+
+ when Pragma_No_Body =>
+ Error_Pragma ("misplaced pragma %");
+
---------------
-- No_Return --
---------------
- -- pragma No_Return (procedure_LOCAL_NAME);
+ -- pragma No_Return (procedure_LOCAL_NAME {, procedure_Local_Name});
- when Pragma_No_Return => declare
+ when Pragma_No_Return => No_Return : declare
Id : Node_Id;
E : Entity_Id;
Found : Boolean;
+ Arg : Node_Id;
begin
GNAT_Pragma;
- Check_Arg_Count (1);
- Check_No_Identifiers;
- Check_Arg_Is_Local_Name (Arg1);
- Id := Expression (Arg1);
- Analyze (Id);
+ Check_At_Least_N_Arguments (1);
- if not Is_Entity_Name (Id) then
- Error_Pragma_Arg ("entity name required", Arg1);
- end if;
+ -- Loop through arguments of pragma
- if Etype (Id) = Any_Type then
- raise Pragma_Exit;
+ Arg := Arg1;
+ while Present (Arg) loop
+ Check_Arg_Is_Local_Name (Arg);
+ Id := Expression (Arg);
+ Analyze (Id);
+
+ if not Is_Entity_Name (Id) then
+ Error_Pragma_Arg ("entity name required", Arg);
+ end if;
+
+ if Etype (Id) = Any_Type then
+ raise Pragma_Exit;
+ end if;
+
+ -- Loop to find matching procedures
+
+ E := Entity (Id);
+ Found := False;
+ while Present (E)
+ and then Scope (E) = Current_Scope
+ loop
+ if Ekind (E) = E_Procedure
+ or else Ekind (E) = E_Generic_Procedure
+ then
+ Set_No_Return (E);
+ Found := True;
+ end if;
+
+ E := Homonym (E);
+ end loop;
+
+ if not Found then
+ Error_Pragma_Arg ("no procedure & found for pragma%", Arg);
+ end if;
+
+ Next (Arg);
+ end loop;
+ end No_Return;
+
+ ------------------------
+ -- No_Strict_Aliasing --
+ ------------------------
+
+ -- pragma No_Strict_Aliasing [([Entity =>] type_LOCAL_NAME)];
+
+ 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 --
+ -----------------
- E := Entity (Id);
+ -- pragma Obsolescent [(
+ -- [Entity => NAME,]
+ -- [(static_string_EXPRESSION [, Ada_05])];
- Found := False;
- while Present (E)
- and then Scope (E) = Current_Scope
- loop
- if Ekind (E) = E_Procedure
- or else Ekind (E) = E_Generic_Procedure
+ when Pragma_Obsolescent => Obsolescent : declare
+ Ename : Node_Id;
+ Decl : Node_Id;
+
+ procedure Set_Obsolescent (E : Entity_Id);
+ -- Given an entity Ent, mark it as obsolescent if appropriate
+
+ ---------------------
+ -- Set_Obsolescent --
+ ---------------------
+
+ procedure Set_Obsolescent (E : Entity_Id) is
+ Active : Boolean;
+ Ent : Entity_Id;
+ S : String_Id;
+
+ begin
+ Active := True;
+ Ent := E;
+
+ -- Entity name was given
+
+ if Present (Ename) then
+
+ -- If entity name matches, we are fine
+
+ if Chars (Ename) = Chars (Ent) then
+ null;
+
+ -- If entity name does not match, only possibility is an
+ -- enumeration literal from an enumeration type declaration.
+
+ elsif Ekind (Ent) /= E_Enumeration_Type then
+ Error_Pragma
+ ("pragma % entity name does not match declaration");
+
+ else
+ Ent := First_Literal (E);
+ loop
+ if No (Ent) then
+ Error_Pragma
+ ("pragma % entity name does not match any " &
+ "enumeration literal");
+
+ elsif Chars (Ent) = Chars (Ename) then
+ exit;
+
+ else
+ Ent := Next_Literal (Ent);
+ end if;
+ end loop;
+ end if;
+ end if;
+
+ -- Ent points to entity to be marked
+
+ if Arg_Count >= 1 then
+
+ -- Deal with static string argument
+
+ 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 (Ent, Expression (Arg1));
+
+ -- Check for Ada_05 parameter
+
+ if Arg_Count /= 1 then
+ Check_Arg_Count (2);
+
+ declare
+ Argx : constant Node_Id := Get_Pragma_Arg (Arg2);
+
+ begin
+ Check_Arg_Is_Identifier (Argx);
+
+ if Chars (Argx) /= Name_Ada_05 then
+ Error_Msg_Name_2 := Name_Ada_05;
+ Error_Pragma_Arg
+ ("only allowed argument for pragma% is %", Argx);
+ end if;
+
+ if Ada_Version_Explicit < Ada_05
+ or else not Warn_On_Ada_2005_Compatibility
+ then
+ Active := False;
+ end if;
+ end;
+ end if;
+ end if;
+
+ -- Set flag if pragma active
+
+ if Active then
+ Set_Is_Obsolescent (Ent);
+ end if;
+
+ return;
+ end Set_Obsolescent;
+
+ -- Start of processing for pragma Obsolescent
+
+ begin
+ GNAT_Pragma;
+
+ Check_At_Most_N_Arguments (3);
+
+ -- See if first argument specifies an entity name
+
+ if Arg_Count >= 1
+ and then Chars (Arg1) = Name_Entity
+ then
+ Ename := Get_Pragma_Arg (Arg1);
+
+ if Nkind (Ename) /= N_Character_Literal
+ and then
+ Nkind (Ename) /= N_Identifier
+ and then
+ Nkind (Ename) /= N_Operator_Symbol
then
- Set_No_Return (E);
- Found := True;
+ Error_Pragma_Arg ("entity name expected for pragma%", Arg1);
end if;
- E := Homonym (E);
+ -- Eliminate first argument, so we can share processing
+
+ Arg1 := Arg2;
+ Arg2 := Arg3;
+ Arg_Count := Arg_Count - 1;
+
+ -- No Entity name argument given
+
+ else
+ Ename := Empty;
+ end if;
+
+ Check_No_Identifiers;
+
+ -- Get immediately preceding declaration
+
+ Decl := Prev (N);
+ while Present (Decl) and then Nkind (Decl) = N_Pragma loop
+ Prev (Decl);
end loop;
- if not Found then
- Error_Pragma ("no procedures found for pragma%");
+ -- Cases where we do not follow anything other than another pragma
+
+ if No (Decl) then
+
+ -- First case: library level compilation unit declaration with
+ -- the pragma immediately following the declaration.
+
+ if Nkind (Parent (N)) = N_Compilation_Unit_Aux then
+ Set_Obsolescent
+ (Defining_Entity (Unit (Parent (Parent (N)))));
+ return;
+
+ -- Case 2: library unit placement for package
+
+ else
+ declare
+ Ent : constant Entity_Id := Find_Lib_Unit_Name;
+ begin
+ if Ekind (Ent) = E_Package
+ or else Ekind (Ent) = E_Generic_Package
+ then
+ Set_Obsolescent (Ent);
+ return;
+ end if;
+ end;
+ end if;
+
+ -- Cases where we must follow a declaration
+
+ else
+ if Nkind (Decl) not in N_Declaration
+ and then Nkind (Decl) not in N_Later_Decl_Item
+ and then Nkind (Decl) not in N_Generic_Declaration
+ then
+ Error_Pragma
+ ("pragma% misplaced, " &
+ "must immediately follow a declaration");
+
+ else
+ Set_Obsolescent (Defining_Entity (Decl));
+ return;
+ end if;
end if;
- end;
+ 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 --
-- 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;
if Has_Pragma_Pack (Typ) then
Error_Pragma ("duplicate pragma%, only one allowed");
- -- Array type. We set the Has_Pragma_Pack flag, and Is_Packed,
- -- but not Has_Non_Standard_Rep, because we don't actually know
- -- till freeze time if the array can have packed representation.
- -- That's because in the general case we do not know enough about
- -- the component type until it in turn is frozen, which certainly
- -- happens before the array type is frozen, but not necessarily
- -- till that point (i.e. right now it may be unfrozen).
+ -- Array type
elsif Is_Array_Type (Typ) then
+ -- Pack not allowed for aliased or atomic components
+
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");
-
- elsif not Rep_Item_Too_Late (Typ, N) then
- Set_Is_Packed (Base_Type (Typ));
- Set_Has_Pragma_Pack (Base_Type (Typ));
- Set_Has_Non_Standard_Rep (Base_Type (Typ));
- end if;
-
- -- Record type. For record types, the pack is always effective
-
- else -- 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));
- Set_Has_Non_Standard_Rep (Base_Type (Typ));
+ ("?pragma% ignored, cannot pack atomic components");
end if;
- end if;
- end Pack;
- ----------
- -- Page --
- ----------
+ -- If we had an explicit component size given, then we do not
+ -- let Pack override this given size. We also give a warning
+ -- that Pack is being ignored unless we can tell for sure that
+ -- the Pack would not have had any effect anyway.
+
+ if Has_Component_Size_Clause (Typ) then
+ if Known_Static_RM_Size (Component_Type (Typ))
+ and then
+ RM_Size (Component_Type (Typ)) = Component_Size (Typ)
+ then
+ null;
+ else
+ Error_Pragma
+ ("?pragma% ignored, explicit component size given");
+ end if;
+
+ -- If no prior array component size given, Pack is effective
+
+ else
+ if not Rep_Item_Too_Late (Typ, N) then
+ if VM_Target = No_VM then
+ Set_Is_Packed (Base_Type (Typ));
+ elsif not GNAT_Mode then
+ Error_Pragma
+ ("?pragma% ignored in this configuration");
+ end if;
+
+ Set_Has_Pragma_Pack (Base_Type (Typ));
+ Set_Has_Non_Standard_Rep (Base_Type (Typ));
+ end if;
+ end if;
+
+ -- For record types, the pack is always effective
+
+ else pragma Assert (Is_Record_Type (Typ));
+ if not Rep_Item_Too_Late (Typ, N) then
+ if VM_Target = No_VM then
+ Set_Is_Packed (Base_Type (Typ));
+ elsif not GNAT_Mode then
+ Error_Pragma ("?pragma% ignored in this configuration");
+ end if;
+
+ Set_Has_Pragma_Pack (Base_Type (Typ));
+ Set_Has_Non_Standard_Rep (Base_Type (Typ));
+ end if;
+ end if;
+ end Pack;
+
+ ----------
+ -- Page --
+ ----------
-- pragma Page;
Check_Arg_Is_One_Of (Arg1, Name_Semaphore, Name_No);
end if;
+ ----------------------------------
+ -- Preelaborable_Initialization --
+ ----------------------------------
+
+ -- pragma Preelaborable_Initialization (DIRECT_NAME);
+
+ when Pragma_Preelaborable_Initialization => Preelab_Init : declare
+ Ent : Entity_Id;
+
+ begin
+ Ada_2005_Pragma;
+ Check_Arg_Count (1);
+ Check_No_Identifiers;
+ Check_Arg_Is_Identifier (Arg1);
+ Check_Arg_Is_Local_Name (Arg1);
+ Check_First_Subtype (Arg1);
+ Ent := Entity (Expression (Arg1));
+
+ if not Is_Private_Type (Ent) then
+ Error_Pragma_Arg
+ ("pragma % can only be applied to private type", Arg1);
+ end if;
+
+ Set_Known_To_Have_Preelab_Init (Ent);
+ end Preelab_Init;
+
-------------
-- Polling --
-------------
Check_Arg_Is_One_Of (Arg1, Name_On, Name_Off);
Polling_Required := (Chars (Expression (Arg1)) = Name_On);
+ --------------------
+ -- Persistent_BSS --
+ --------------------
+
+ when Pragma_Persistent_BSS => Persistent_BSS : declare
+ Decl : Node_Id;
+ Ent : Entity_Id;
+ Prag : Node_Id;
+
+ begin
+ GNAT_Pragma;
+ Check_At_Most_N_Arguments (1);
+
+ -- Case of application to specific object (one argument)
+
+ if Arg_Count = 1 then
+ 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 Rep_Item_Too_Late (Ent, N) then
+ return;
+ end if;
+
+ if Present (Expression (Decl)) then
+ Error_Pragma_Arg
+ ("object for pragma% cannot have initialization", Arg1);
+ end if;
+
+ if not Is_Potentially_Persistent_Type (Etype (Ent)) then
+ Error_Pragma_Arg
+ ("object type for pragma% is not potentially persistent",
+ Arg1);
+ end if;
+
+ Prag :=
+ Make_Linker_Section_Pragma
+ (Ent, Sloc (N), ".persistent.bss");
+ Insert_After (N, Prag);
+ Analyze (Prag);
+
+ -- Case of use as configuration pragma with no arguments
+
+ else
+ Check_Valid_Configuration_Pragma;
+ Persistent_BSS_Mode := True;
+ end if;
+ end Persistent_BSS;
+
------------------
-- 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;
if Present (Ent)
and then not (Pk = N_Package_Specification
- and then Present (Generic_Parent (Pa)))
+ and then Present (Generic_Parent (Pa)))
then
if not Debug_Flag_U then
Set_Is_Preelaborated (Ent);
end if;
end Preelaborate;
+ ---------------------
+ -- Preelaborate_05 --
+ ---------------------
+
+ -- pragma Preelaborate_05 [(library_unit_NAME)];
+
+ -- This pragma is useable only in GNAT_Mode, where it is used like
+ -- pragma Preelaborate but it is only effective in Ada 2005 mode
+ -- (otherwise it is ignored). This is used to implement AI-362 which
+ -- recategorizes some run-time packages in Ada 2005 mode.
+
+ when Pragma_Preelaborate_05 => Preelaborate_05 : declare
+ Ent : Entity_Id;
+
+ begin
+ GNAT_Pragma;
+ Check_Valid_Library_Unit_Pragma;
+
+ if not GNAT_Mode then
+ Error_Pragma ("pragma% only available in GNAT mode");
+ end if;
+
+ if Nkind (N) = N_Null_Statement then
+ return;
+ end if;
+
+ -- This is one of the few cases where we need to test the value of
+ -- Ada_Version_Explicit rather than Ada_Version (which is always
+ -- set to Ada_05 in a predefined unit), we need to know the
+ -- explicit version set to know if this pragma is active.
+
+ if Ada_Version_Explicit >= Ada_05 then
+ Ent := Find_Lib_Unit_Name;
+ Set_Is_Preelaborated (Ent);
+ Set_Suppress_Elaboration_Warnings (Ent);
+ end if;
+ end Preelaborate_05;
+
--------------
-- Priority --
--------------
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
end if;
Set_Main_Priority
- (Current_Sem_Unit, UI_To_Int (Expr_Value (Arg)));
+ (Current_Sem_Unit, UI_To_Int (Expr_Value (Arg)));
+
+ -- Load an arbitrary entity from System.Tasking to make sure
+ -- this package is implicitly with'ed, since we need to have
+ -- the tasking run-time active for the pragma Priority to have
+ -- any effect.
+
+ declare
+ Discard : Entity_Id;
+ pragma Warnings (Off, Discard);
+ begin
+ Discard := RTE (RE_Task_List);
+ end;
-- Task or Protected, must be of type Integer
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;
+ -----------------------------------
+ -- Priority_Specific_Dispatching --
+ -----------------------------------
+
+ -- pragma Priority_Specific_Dispatching (
+ -- policy_IDENTIFIER,
+ -- first_priority_EXPRESSION,
+ -- last_priority_EXPRESSION);
+
+ when Pragma_Priority_Specific_Dispatching =>
+ Priority_Specific_Dispatching : declare
+ Prio_Id : constant Entity_Id := RTE (RE_Any_Priority);
+ -- This is the entity System.Any_Priority;
+
+ DP : Character;
+ Lower_Bound : Node_Id;
+ Upper_Bound : Node_Id;
+ Lower_Val : Uint;
+ Upper_Val : Uint;
+
+ begin
+ Ada_2005_Pragma;
+ Check_Arg_Count (3);
+ Check_No_Identifiers;
+ Check_Arg_Is_Task_Dispatching_Policy (Arg1);
+ Check_Valid_Configuration_Pragma;
+ Get_Name_String (Chars (Expression (Arg1)));
+ DP := Fold_Upper (Name_Buffer (1));
+
+ Lower_Bound := Expression (Arg2);
+ Check_Arg_Is_Static_Expression (Lower_Bound, Standard_Integer);
+ Lower_Val := Expr_Value (Lower_Bound);
+
+ Upper_Bound := Expression (Arg3);
+ Check_Arg_Is_Static_Expression (Upper_Bound, Standard_Integer);
+ Upper_Val := Expr_Value (Upper_Bound);
+
+ -- It is not allowed to use Task_Dispatching_Policy and
+ -- Priority_Specific_Dispatching in the same partition.
+
+ if Task_Dispatching_Policy /= ' ' then
+ Error_Msg_Sloc := Task_Dispatching_Policy_Sloc;
+ Error_Pragma
+ ("pragma% incompatible with Task_Dispatching_Policy#");
+
+ -- Check lower bound in range
+
+ elsif Lower_Val < Expr_Value (Type_Low_Bound (Prio_Id))
+ or else
+ Lower_Val > Expr_Value (Type_High_Bound (Prio_Id))
+ then
+ Error_Pragma_Arg
+ ("first_priority is out of range", Arg2);
+
+ -- Check upper bound in range
+
+ elsif Upper_Val < Expr_Value (Type_Low_Bound (Prio_Id))
+ or else
+ Upper_Val > Expr_Value (Type_High_Bound (Prio_Id))
+ then
+ Error_Pragma_Arg
+ ("last_priority is out of range", Arg3);
+
+ -- Check that the priority range is valid
+
+ elsif Lower_Val > Upper_Val then
+ Error_Pragma
+ ("last_priority_expression must be greater than" &
+ " or equal to first_priority_expression");
+
+ -- Store the new policy, but always preserve System_Location since
+ -- we like the error message with the run-time name.
+
+ else
+ -- Check overlapping in the priority ranges specified in other
+ -- Priority_Specific_Dispatching pragmas within the same
+ -- partition. We can only check those we know about!
+
+ for J in
+ Specific_Dispatching.First .. Specific_Dispatching.Last
+ loop
+ if Specific_Dispatching.Table (J).First_Priority in
+ UI_To_Int (Lower_Val) .. UI_To_Int (Upper_Val)
+ or else Specific_Dispatching.Table (J).Last_Priority in
+ UI_To_Int (Lower_Val) .. UI_To_Int (Upper_Val)
+ then
+ Error_Msg_Sloc :=
+ Specific_Dispatching.Table (J).Pragma_Loc;
+ Error_Pragma ("priority range overlaps with" &
+ " Priority_Specific_Dispatching#");
+ end if;
+ end loop;
+
+ -- The use of Priority_Specific_Dispatching is incompatible
+ -- with Task_Dispatching_Policy.
+
+ if Task_Dispatching_Policy /= ' ' then
+ Error_Msg_Sloc := Task_Dispatching_Policy_Sloc;
+ Error_Pragma ("Priority_Specific_Dispatching incompatible" &
+ " with Task_Dispatching_Policy#");
+ end if;
+
+ -- The use of Priority_Specific_Dispatching forces ceiling
+ -- locking policy.
+
+ if Locking_Policy /= ' ' and then Locking_Policy /= 'C' then
+ Error_Msg_Sloc := Locking_Policy_Sloc;
+ Error_Pragma ("Priority_Specific_Dispatching incompatible" &
+ " with Locking_Policy#");
+
+ -- Set the Ceiling_Locking policy, but 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;
+
+ -- Add entry in the table
+
+ Specific_Dispatching.Append
+ ((Dispatching_Policy => DP,
+ First_Priority => UI_To_Int (Lower_Val),
+ Last_Priority => UI_To_Int (Upper_Val),
+ Pragma_Loc => Loc));
+ end if;
+ end Priority_Specific_Dispatching;
+
+ -------------
+ -- Profile --
+ -------------
+
+ -- pragma Profile (profile_IDENTIFIER);
+
+ -- profile_IDENTIFIER => Protected | Ravenscar
+
+ when Pragma_Profile =>
+ Ada_2005_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_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 --
--------------------------
-- pragma Propagate_Exceptions;
+ -- Note: this pragma is obsolete and has no effect
+
when Pragma_Propagate_Exceptions =>
GNAT_Pragma;
Check_Arg_Count (0);
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);
+ end if;
- 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;
----------
when Pragma_Pure => Pure : declare
Ent : Entity_Id;
+
begin
Check_Ada_83_Warning;
Check_Valid_Library_Unit_Pragma;
Ent := Find_Lib_Unit_Name;
Set_Is_Pure (Ent);
+ Set_Has_Pragma_Pure (Ent);
Set_Suppress_Elaboration_Warnings (Ent);
end Pure;
+ -------------
+ -- Pure_05 --
+ -------------
+
+ -- pragma Pure_05 [(library_unit_NAME)];
+
+ -- This pragma is useable only in GNAT_Mode, where it is used like
+ -- pragma Pure but it is only effective in Ada 2005 mode (otherwise
+ -- it is ignored). It may be used after a pragma Preelaborate, in
+ -- which case it overrides the effect of the pragma Preelaborate.
+ -- This is used to implement AI-362 which recategorizes some run-time
+ -- packages in Ada 2005 mode.
+
+ when Pragma_Pure_05 => Pure_05 : declare
+ Ent : Entity_Id;
+
+ begin
+ GNAT_Pragma;
+ Check_Valid_Library_Unit_Pragma;
+
+ if not GNAT_Mode then
+ Error_Pragma ("pragma% only available in GNAT mode");
+ end if;
+ if Nkind (N) = N_Null_Statement then
+ return;
+ end if;
+
+ -- This is one of the few cases where we need to test the value of
+ -- Ada_Version_Explicit rather than Ada_Version (which is always
+ -- set to Ada_05 in a predefined unit), we need to know the
+ -- explicit version set to know if this pragma is active.
+
+ if Ada_Version_Explicit >= Ada_05 then
+ Ent := Find_Lib_Unit_Name;
+ Set_Is_Preelaborated (Ent, False);
+ Set_Is_Pure (Ent);
+ Set_Suppress_Elaboration_Warnings (Ent);
+ end if;
+ end Pure_05;
+
-------------------
-- Pure_Function --
-------------------
-- 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);
- 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 --
-- 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;
+ when Pragma_Restrictions =>
+ Process_Restrictions_Or_Restriction_Warnings (Warn => False);
- 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
-
- else
- Val := Expr_Value (Expr);
+ --------------------------
+ -- Restriction_Warnings --
+ --------------------------
- -- Record pragma if most restrictive so far
+ -- pragma Restriction_Warnings (RESTRICTION {, RESTRICTION});
- 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;
+ -- RESTRICTION ::=
+ -- restriction_IDENTIFIER
+ -- | restriction_parameter_IDENTIFIER => EXPRESSION
- Next (Arg);
- end loop;
- end Restrictions_Pragma;
+ when Pragma_Restriction_Warnings =>
+ Process_Restrictions_Or_Restriction_Warnings (Warn => True);
----------------
-- Reviewable --
when Pragma_Reviewable =>
Check_Ada_83_Warning;
Check_Arg_Count (0);
+ rv;
-------------------
-- Share_Generic --
-- 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 (
- -- [UNIT_NAME =>] unit_NAME,
- -- [BODY_FILE_NAME | SPEC_FILE_NAME] => STRING_LITERAL);
+ -- SPEC_FILE_NAME => STRING_LITERAL
+ -- [, DOT_REPLACEMENT => STRING_LITERAL]
+ -- [, CASING => CASING_SPEC]);
+
+ -- pragma Source_File_Name (
+ -- 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 --
----------------------
when Pragma_Source_Reference =>
GNAT_Pragma;
+ --------------------------------
+ -- Static_Elaboration_Desired --
+ --------------------------------
+
+ -- Syntax ???
+
+ when Pragma_Static_Elaboration_Desired =>
+
+ -- GNAT_Pragma???
+ -- Check number of arguments ???
+
+ if Is_Compilation_Unit (Current_Scope)
+ and then Ekind (Current_Scope) = E_Package
+ then
+ Set_Static_Elaboration_Desired (Current_Scope, True);
+ else
+ Error_Pragma ("pragma% must apply to a library-level package");
+ end if;
+
------------------
-- Storage_Size --
------------------
-- 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 ???
+
+ Arg := Expression (Arg1);
+ Analyze_Per_Use_Expression (Arg, Any_Integer);
- if not Is_Static_Expression (X) then
- Check_Restriction (Static_Storage_Size, X);
+ 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_Order ((Name_Entity, Name_Read, Name_Write));
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;
exit when not In_Character_Range (C);
Options (J) := Get_Character (C);
+ -- If at end of string, set options. As per discussion
+ -- above, no need to check for errors, since we issued
+ -- them in the parser.
+
if J = Slen then
Set_Style_Check_Options (Options);
exit;
- else
- J := J + 1;
end if;
+
+ J := J + 1;
end loop;
end;
elsif Nkind (A) = N_Identifier then
-
if Chars (A) = Name_All_Checks then
Set_Default_Style_Check_Options;
elsif Chars (A) = Name_Off then
Style_Check := False;
-
end if;
end if;
end if;
when Pragma_Suppress_Debug_Info =>
GNAT_Pragma;
Check_Arg_Count (1);
- Check_Arg_Is_Local_Name (Arg1);
Check_Optional_Identifier (Arg1, Name_Entity);
+ Check_Arg_Is_Local_Name (Arg1);
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;
----------------
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
Discr := First_Discriminant (Typ);
- if Present (Next_Discriminant (Discr)) then
- Error_Msg_N
- ("Unchecked_Union must have exactly one discriminant",
- Next_Discriminant (Discr));
- return;
- end if;
-
- if No (Discriminant_Default_Value (Discr)) then
- Error_Msg_N
- ("Unchecked_Union discriminant must have default value",
- Discr);
- end if;
-
- Tdef := Type_Definition (Declaration_Node (Typ));
- Clist := Component_List (Tdef);
-
- if No (Clist) or else No (Variant_Part (Clist)) then
- Error_Msg_N
- ("Unchecked_Union must have variant part",
- Tdef);
- return;
- end if;
-
- 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
+ while Present (Discr) loop
+ if No (Discriminant_Default_Value (Discr)) then
Error_Msg_N
- ("Unchecked_Union may not have empty component list",
- Variant);
- return;
+ ("Unchecked_Union discriminant must have default value",
+ Discr);
end if;
+ Next_Discriminant (Discr);
+ end loop;
- Comp := First (Component_Items (Clist));
+ Tdef := Type_Definition (Declaration_Node (Typ));
+ Clist := Component_List (Tdef);
- if Nkind (Comp) = N_Component_Declaration then
+ Comp := First (Component_Items (Clist));
+ while Present (Comp) loop
- if Present (Expression (Comp)) then
- Error_Msg_N
- ("default initialization not allowed " &
- "in Unchecked_Union",
- Expression (Comp));
- end if;
+ Check_Component (Comp);
+ Next (Comp);
- declare
- Sindic : constant Node_Id :=
- Subtype_Indication (Comp);
+ end loop;
- begin
- if Nkind (Sindic) = N_Subtype_Indication then
- Check_Static_Constraint (Constraint (Sindic));
- end if;
- end;
- end if;
+ if No (Clist) or else No (Variant_Part (Clist)) then
+ Error_Msg_N
+ ("Unchecked_Union must have variant part",
+ Tdef);
+ return;
+ end if;
- if Present (Next (Comp)) then
- Error_Msg_N
- ("Unchecked_Union variant can have only one component",
- Next (Comp));
- end if;
+ Vpart := Variant_Part (Clist);
+ Variant := First (Variants (Vpart));
+ while Present (Variant) loop
+ 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;
Get_Name_String (Chars (Cunitent));
Set_Casing (Mixed_Case);
Write_Str (Name_Buffer (1 .. Name_Len));
- Write_Str (" is not implemented");
+ Write_Str (" is not supported in this configuration");
Write_Eol;
raise Unrecoverable_Error;
end if;
end Unimplemented_Unit;
+ ------------------------
+ -- Universal_Aliasing --
+ ------------------------
+
+ -- pragma Universal_Aliasing [([Entity =>] type_LOCAL_NAME)];
+
+ when Pragma_Universal_Aliasing => Universal_Alias : declare
+ E_Id : Entity_Id;
+
+ begin
+ GNAT_Pragma;
+ Check_Arg_Count (1);
+ 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_Type (E_Id) then
+ Error_Pragma_Arg ("pragma% requires type", Arg1);
+ end if;
+
+ Set_Universal_Aliasing (Implementation_Base_Type (E_Id));
+ end Universal_Alias;
+
+ --------------------
+ -- 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});
+
+ -- or when used in a context clause:
+
+ -- pragma Unreferenced (library_unit_NAME {, library_unit_NAME}
+
+ when Pragma_Unreferenced => Unreferenced : declare
+ Arg_Node : Node_Id;
+ Arg_Expr : Node_Id;
+ Arg_Ent : Entity_Id;
+ Citem : Node_Id;
+
+ begin
+ GNAT_Pragma;
+ Check_At_Least_N_Arguments (1);
+
+ -- Check case of appearing within context clause
+
+ if Is_In_Context_Clause then
+
+ -- The arguments must all be units mentioned in a with
+ -- clause in the same context clause. Note we already checked
+ -- (in Par.Prag) that the arguments are either identifiers or
+
+ Arg_Node := Arg1;
+ while Present (Arg_Node) loop
+ Citem := First (List_Containing (N));
+ while Citem /= N loop
+ if Nkind (Citem) = N_With_Clause
+ and then Same_Name (Name (Citem), Expression (Arg_Node))
+ then
+ Set_Has_Pragma_Unreferenced
+ (Cunit_Entity
+ (Get_Source_Unit
+ (Library_Unit (Citem))));
+ Set_Unit_Name (Expression (Arg_Node), Name (Citem));
+ exit;
+ end if;
+
+ Next (Citem);
+ end loop;
+
+ if Citem = N then
+ Error_Pragma_Arg
+ ("argument of pragma% is not with'ed unit", Arg_Node);
+ end if;
+
+ Next (Arg_Node);
+ end loop;
+
+ -- Case of not in list of context items
+
+ else
+ Arg_Node := Arg1;
+ while Present (Arg_Node) loop
+ Check_No_Identifier (Arg_Node);
+
+ -- Note: the analyze call done by Check_Arg_Is_Local_Name
+ -- will in fact generate 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 if;
+ end Unreferenced;
+
+ --------------------------
+ -- Unreferenced_Objects --
+ --------------------------
+
+ -- pragma Unreferenced_Objects (local_Name {, local_Name});
+
+ when Pragma_Unreferenced_Objects => Unreferenced_Objects : declare
+ Arg_Node : Node_Id;
+ Arg_Expr : Node_Id;
+
+ begin
+ GNAT_Pragma;
+ Check_At_Least_N_Arguments (1);
+
+ Arg_Node := Arg1;
+ while Present (Arg_Node) loop
+ Check_No_Identifier (Arg_Node);
+ Check_Arg_Is_Local_Name (Arg_Node);
+ Arg_Expr := Get_Pragma_Arg (Arg_Node);
+
+ if not Is_Entity_Name (Arg_Expr)
+ or else not Is_Type (Entity (Arg_Expr))
+ then
+ Error_Pragma_Arg
+ ("argument for pragma% must be type or subtype", Arg_Node);
+ end if;
+
+ Set_Has_Pragma_Unreferenced_Objects (Entity (Arg_Expr));
+ Next (Arg_Node);
+ end loop;
+ end Unreferenced_Objects;
+
------------------------------
-- 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;
-- Warnings --
--------------
- -- pragma Warnings (On | Off, [LOCAL_NAME])
+ -- pragma Warnings (On | Off);
+ -- pragma Warnings (On | Off, LOCAL_NAME);
+ -- pragma Warnings (static_string_EXPRESSION);
+ -- pragma Warnings (On | Off, STRING_LITERAL);
- when Pragma_Warnings =>
+ when Pragma_Warnings => Warnings : begin
GNAT_Pragma;
Check_At_Least_N_Arguments (1);
- Check_At_Most_N_Arguments (2);
Check_No_Identifiers;
- -- One argument case was processed by parser in Par.Prag
+ declare
+ Argx : constant Node_Id := Get_Pragma_Arg (Arg1);
- if Arg_Count /= 1 then
- Check_Arg_Is_One_Of (Arg1, Name_On, Name_Off);
- Check_Arg_Count (2);
+ begin
+ -- One argument case
- declare
- E_Id : Node_Id;
- E : Entity_Id;
+ if Arg_Count = 1 then
- begin
- E_Id := Expression (Arg2);
- Analyze (E_Id);
+ -- On/Off one argument case was processed by parser
- if not Is_Entity_Name (E_Id) then
+ if Nkind (Argx) = N_Identifier
+ and then
+ (Chars (Argx) = Name_On
+ or else
+ Chars (Argx) = Name_Off)
+ then
+ null;
+
+ -- One argument case must be ON/OFF or static string expr
+
+ elsif not Is_Static_String_Expression (Arg1) then
Error_Pragma_Arg
- ("second argument of pragma% must be entity name",
- Arg2);
- end if;
+ ("argument of pragma% must be On/Off or " &
+ "static string expression", Arg2);
- E := Entity (E_Id);
+ -- One argument string expression case
- if E = Any_Id then
- return;
else
- loop
- Set_Warnings_Off (E,
- (Chars (Expression (Arg1)) = Name_Off));
+ declare
+ Lit : constant Node_Id := Expr_Value_S (Argx);
+ Str : constant String_Id := Strval (Lit);
+ Len : constant Nat := String_Length (Str);
+ C : Char_Code;
+ J : Nat;
+ OK : Boolean;
+ Chr : Character;
- if Is_Enumeration_Type (E) then
- declare
- Lit : Entity_Id := First_Literal (E);
+ begin
+ J := 1;
+ while J <= Len loop
+ C := Get_String_Char (Str, J);
+ OK := In_Character_Range (C);
- begin
- while Present (Lit) loop
- Set_Warnings_Off (Lit);
- Next_Literal (Lit);
- end loop;
- end;
- end if;
+ if OK then
+ Chr := Get_Character (C);
- exit when No (Homonym (E));
- E := Homonym (E);
- end loop;
+ -- Dot case
+
+ if J < Len and then Chr = '.' then
+ J := J + 1;
+ C := Get_String_Char (Str, J);
+ Chr := Get_Character (C);
+
+ if not Set_Dot_Warning_Switch (Chr) then
+ Error_Pragma_Arg
+ ("invalid warning switch character " &
+ '.' & Chr, Arg1);
+ end if;
+
+ -- Non-Dot case
+
+ else
+ OK := Set_Warning_Switch (Chr);
+ end if;
+ end if;
+
+ if not OK then
+ Error_Pragma_Arg
+ ("invalid warning switch character " & Chr,
+ Arg1);
+ end if;
+
+ J := J + 1;
+ end loop;
+ end;
end if;
- end;
- end if;
+
+ -- Two or more arguments (must be two)
+
+ else
+ Check_Arg_Is_One_Of (Arg1, Name_On, Name_Off);
+ Check_At_Most_N_Arguments (2);
+
+ declare
+ E_Id : Node_Id;
+ E : Entity_Id;
+ Err : Boolean;
+
+ begin
+ 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;
+
+ -- Entity name case
+
+ if Is_Entity_Name (E_Id) then
+ E := Entity (E_Id);
+
+ if E = Any_Id then
+ return;
+ else
+ loop
+ Set_Warnings_Off
+ (E, (Chars (Expression (Arg1)) = Name_Off));
+
+ if Is_Enumeration_Type (E) then
+ declare
+ Lit : Entity_Id;
+ begin
+ Lit := First_Literal (E);
+ while Present (Lit) loop
+ Set_Warnings_Off (Lit);
+ Next_Literal (Lit);
+ end loop;
+ end;
+ end if;
+
+ exit when No (Homonym (E));
+ E := Homonym (E);
+ end loop;
+ end if;
+
+ -- Error if not entity or static string literal case
+
+ elsif not Is_Static_String_Expression (Arg2) then
+ Error_Pragma_Arg
+ ("second argument of pragma% must be entity " &
+ "name or static string expression", Arg2);
+
+ -- String literal case
+
+ else
+ String_To_Name_Buffer
+ (Strval (Expr_Value_S (Expression (Arg2))));
+
+ -- Configuration pragma case
+
+ if Is_Configuration_Pragma then
+ if Chars (Argx) = Name_On then
+ Error_Pragma
+ ("pragma Warnings (On, string) cannot be " &
+ "used as configuration pragma");
+
+ else
+ Set_Specific_Warning_Off
+ (No_Location, Name_Buffer (1 .. Name_Len));
+ end if;
+
+ -- Normal (non-configuration pragma) case
+
+ else
+ if Chars (Argx) = Name_Off then
+ Set_Specific_Warning_Off
+ (Loc, Name_Buffer (1 .. Name_Len));
+
+ elsif Chars (Argx) = Name_On then
+ Set_Specific_Warning_On
+ (Loc, Name_Buffer (1 .. Name_Len), Err);
+
+ if Err then
+ Error_Msg
+ ("?pragma Warnings On with no " &
+ "matching Warnings Off",
+ Loc);
+ end if;
+ end if;
+ end if;
+ end if;
+ end;
+ end if;
+ end;
+ end Warnings;
-------------------
-- Weak_External --
end if;
end Weak_External;
+ -----------------------------
+ -- Wide_Character_Encoding --
+ -----------------------------
+
+ -- pragma Wide_Character_Encoding (IDENTIFIER);
+
+ when Pragma_Wide_Character_Encoding =>
+
+ -- Nothing to do, handled in parser. Note that we do not enforce
+ -- configuration pragma placement, this pragma can appear at any
+ -- place in the source, allowing mixed encodings within a single
+ -- source program.
+
+ null;
+
+ --------------------
+ -- 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
+ or else
+ Chars (N) = Name_Priority_Specific_Dispatching;
+ 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_Ada_2005 => -1,
+ Pragma_All_Calls_Remote => -1,
+ Pragma_Annotate => -1,
+ Pragma_Assert => -1,
+ Pragma_Assertion_Policy => 0,
+ Pragma_Asynchronous => -1,
+ Pragma_Atomic => 0,
+ Pragma_Atomic_Components => 0,
+ Pragma_Attach_Handler => -1,
+ Pragma_CIL_Constructor => -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_Error => -1,
+ Pragma_Compile_Time_Warning => -1,
+ Pragma_Complete_Representation => 0,
+ Pragma_Complex_Representation => 0,
+ Pragma_Component_Alignment => -1,
+ Pragma_Controlled => 0,
+ Pragma_Convention => 0,
+ Pragma_Convention_Identifier => 0,
+ Pragma_Debug => -1,
+ Pragma_Debug_Policy => 0,
+ Pragma_Detect_Blocking => -1,
+ Pragma_Discard_Names => 0,
+ Pragma_Elaborate => -1,
+ Pragma_Elaborate_All => -1,
+ Pragma_Elaborate_Body => -1,
+ Pragma_Elaboration_Checks => -1,
+ Pragma_Eliminate => -1,
+ Pragma_Export => -1,
+ Pragma_Export_Exception => -1,
+ Pragma_Export_Function => -1,
+ Pragma_Export_Object => -1,
+ Pragma_Export_Procedure => -1,
+ Pragma_Export_Value => -1,
+ Pragma_Export_Valued_Procedure => -1,
+ Pragma_Extend_System => -1,
+ Pragma_Extensions_Allowed => -1,
+ Pragma_External => -1,
+ Pragma_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_Constructor => -1,
+ Pragma_Linker_Destructor => -1,
+ Pragma_Linker_Options => -1,
+ Pragma_Linker_Section => -1,
+ Pragma_List => -1,
+ Pragma_Locking_Policy => -1,
+ Pragma_Long_Float => -1,
+ Pragma_Machine_Attribute => -1,
+ Pragma_Main => -1,
+ Pragma_Main_Storage => -1,
+ Pragma_Memory_Size => -1,
+ Pragma_No_Return => 0,
+ Pragma_No_Body => 0,
+ Pragma_No_Run_Time => -1,
+ Pragma_No_Strict_Aliasing => -1,
+ Pragma_Normalize_Scalars => -1,
+ Pragma_Obsolescent => 0,
+ Pragma_Optimize => -1,
+ Pragma_Pack => 0,
+ Pragma_Page => -1,
+ Pragma_Passive => -1,
+ Pragma_Preelaborable_Initialization => -1,
+ Pragma_Polling => -1,
+ Pragma_Persistent_BSS => 0,
+ Pragma_Preelaborate => -1,
+ Pragma_Preelaborate_05 => -1,
+ Pragma_Priority => -1,
+ Pragma_Priority_Specific_Dispatching => -1,
+ Pragma_Profile => 0,
+ Pragma_Profile_Warnings => 0,
+ Pragma_Propagate_Exceptions => -1,
+ Pragma_Psect_Object => -1,
+ Pragma_Pure => -1,
+ Pragma_Pure_05 => -1,
+ Pragma_Pure_Function => -1,
+ Pragma_Queuing_Policy => -1,
+ Pragma_Ravenscar => -1,
+ Pragma_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_Static_Elaboration_Desired => -1,
+ Pragma_Stream_Convert => -1,
+ Pragma_Style_Checks => -1,
+ Pragma_Subtitle => -1,
+ Pragma_Suppress => 0,
+ Pragma_Suppress_Exception_Locations => 0,
+ Pragma_Suppress_All => -1,
+ Pragma_Suppress_Debug_Info => 0,
+ Pragma_Suppress_Initialization => 0,
+ Pragma_System_Name => -1,
+ Pragma_Task_Dispatching_Policy => -1,
+ Pragma_Task_Info => -1,
+ Pragma_Task_Name => -1,
+ Pragma_Task_Storage => 0,
+ Pragma_Time_Slice => -1,
+ Pragma_Title => -1,
+ Pragma_Unchecked_Union => 0,
+ Pragma_Unimplemented_Unit => -1,
+ Pragma_Universal_Aliasing => -1,
+ Pragma_Universal_Data => -1,
+ Pragma_Unreferenced => -1,
+ Pragma_Unreferenced_Objects => -1,
+ Pragma_Unreserve_All_Interrupts => -1,
+ Pragma_Unsuppress => 0,
+ Pragma_Use_VADS_Size => -1,
+ Pragma_Validity_Checks => -1,
+ Pragma_Volatile => 0,
+ Pragma_Volatile_Components => 0,
+ Pragma_Warnings => -1,
+ Pragma_Weak_External => -1,
+ Pragma_Wide_Character_Encoding => 0,
+ Unknown_Pragma => 0);
+
+ function Is_Non_Significant_Pragma_Reference (N : Node_Id) return Boolean is
+ 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;
--------------------------------------
end;
end Process_Compilation_Unit_Pragmas;
+ --------
+ -- rv --
+ --------
+
+ procedure rv is
+ begin
+ null;
+ end rv;
+
--------------------------------
-- Set_Encoded_Interface_Name --
--------------------------------
-- 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 ('_'));
-- If first character is asterisk, this is a link name, and we
-- leave it completely unmodified. We also ignore null strings
-- (the latter case happens only in error cases) and no encoding
- -- should occur for Java interface names.
+ -- should occur for Java or AAMP interface names.
if Len = 0
or else Get_String_Char (Str, 1) = Get_Char_Code ('*')
- or else Java_VM
+ or else VM_Target /= No_VM
+ or else AAMP_On_Target
then
Set_Interface_Name (E, S);
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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