with Atree; use Atree;
with Casing; use Casing;
with Csets; use Csets;
with Debug; use Debug;
with Einfo; use Einfo;
with Elists; use Elists;
with Errout; use Errout;
with Exp_Dist; use Exp_Dist;
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_Elim; use Sem_Elim;
with Sem_Eval; use Sem_Eval;
with Sem_Intr; use Sem_Intr;
with Sem_Mech; use Sem_Mech;
with Sem_Res; use Sem_Res;
with Sem_Type; use Sem_Type;
with Sem_Util; use Sem_Util;
with Sem_VFpt; use Sem_VFpt;
with Stand; use Stand;
with Sinfo; use Sinfo;
with Sinfo.CN; use Sinfo.CN;
with Sinput; use Sinput;
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 Uintp; use Uintp;
with Urealp; use Urealp;
with Validsw; use Validsw;
with GNAT.Spelling_Checker; use GNAT.Spelling_Checker;
package body Sem_Prag is
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");
function Adjust_External_Name_Case (N : Node_Id) return Node_Id;
function Get_Base_Subprogram (Def_Id : Entity_Id) return Entity_Id;
procedure Set_Unit_Name (N : Node_Id; With_Item : Node_Id);
function Adjust_External_Name_Case (N : Node_Id) return Node_Id is
CC : Char_Code;
begin
if Opt.External_Name_Exp_Casing = As_Is then
return N;
else
Start_String;
for J in 1 .. String_Length (Strval (N)) loop
CC := Get_String_Char (Strval (N), J);
if Opt.External_Name_Exp_Casing = Uppercase
and then CC >= Get_Char_Code ('a')
and then CC <= Get_Char_Code ('z')
then
Store_String_Char (CC - 32);
elsif Opt.External_Name_Exp_Casing = Lowercase
and then CC >= Get_Char_Code ('A')
and then CC <= Get_Char_Code ('Z')
then
Store_String_Char (CC + 32);
else
Store_String_Char (CC);
end if;
end loop;
return
Make_String_Literal (Sloc (N),
Strval => End_String);
end if;
end Adjust_External_Name_Case;
procedure Analyze_Pragma (N : Node_Id) is
Loc : constant Source_Ptr := Sloc (N);
Prag_Id : Pragma_Id;
Pragma_Exit : exception;
Arg_Count : Nat;
Arg1 : Node_Id;
Arg2 : Node_Id;
Arg3 : Node_Id;
Arg4 : Node_Id;
procedure Check_Ada_83_Warning;
procedure Check_Arg_Count (Required : Nat);
procedure Check_Arg_Is_External_Name (Arg : Node_Id);
procedure Check_Arg_Is_Identifier (Arg : Node_Id);
procedure Check_Arg_Is_Integer_Literal (Arg : Node_Id);
procedure Check_Arg_Is_Library_Level_Local_Name (Arg : Node_Id);
procedure Check_Arg_Is_Local_Name (Arg : Node_Id);
procedure Check_Arg_Is_Locking_Policy (Arg : Node_Id);
procedure Check_Arg_Is_One_Of (Arg : Node_Id; N1, N2 : Name_Id);
procedure Check_Arg_Is_One_Of (Arg : Node_Id; N1, N2, N3 : Name_Id);
procedure Check_Arg_Is_Queuing_Policy (Arg : Node_Id);
procedure Check_Arg_Is_Static_Expression
(Arg : Node_Id;
Typ : Entity_Id);
procedure Check_Arg_Is_String_Literal (Arg : Node_Id);
procedure Check_Arg_Is_Task_Dispatching_Policy (Arg : Node_Id);
procedure Check_At_Least_N_Arguments (N : Nat);
procedure Check_At_Most_N_Arguments (N : Nat);
procedure Check_Component (Comp : Node_Id);
procedure Check_Duplicated_Export_Name (Nam : Node_Id);
procedure Check_First_Subtype (Arg : Node_Id);
procedure Check_In_Main_Program;
procedure Check_Interrupt_Or_Attach_Handler;
procedure Check_Is_In_Decl_Part_Or_Package_Spec;
procedure Check_No_Identifier (Arg : Node_Id);
procedure Check_No_Identifiers;
procedure Check_Optional_Identifier (Arg : Node_Id; Id : Name_Id);
procedure Check_Optional_Identifier (Arg : Node_Id; Id : String);
procedure Check_Static_Constraint (Constr : Node_Id);
procedure Check_Valid_Configuration_Pragma;
procedure Check_Valid_Library_Unit_Pragma;
procedure Check_Variant (Variant : Node_Id);
procedure Error_Pragma (Msg : String);
pragma No_Return (Error_Pragma);
procedure Error_Pragma_Arg (Msg : String; Arg : Node_Id);
pragma No_Return (Error_Pragma_Arg);
procedure Error_Pragma_Arg (Msg1, Msg2 : String; Arg : Node_Id);
pragma No_Return (Error_Pragma_Arg);
procedure Error_Pragma_Arg_Ident (Msg : String; Arg : Node_Id);
pragma No_Return (Error_Pragma_Arg_Ident);
function Find_Lib_Unit_Name return Entity_Id;
procedure Find_Program_Unit_Name (Id : Node_Id);
type Name_List is array (Natural range <>) of Name_Id;
type Args_List is array (Natural range <>) of Node_Id;
procedure Gather_Associations
(Names : Name_List;
Args : out Args_List);
function Get_Pragma_Arg (Arg : Node_Id) return Node_Id;
procedure GNAT_Pragma;
function Is_Before_First_Decl
(Pragma_Node : Node_Id;
Decls : List_Id) return Boolean;
function Is_Configuration_Pragma return Boolean;
procedure Pragma_Misplaced;
procedure Process_Atomic_Shared_Volatile;
procedure Process_Convention (C : out Convention_Id; E : out Entity_Id);
procedure Process_Extended_Import_Export_Exception_Pragma
(Arg_Internal : Node_Id;
Arg_External : Node_Id;
Arg_Form : Node_Id;
Arg_Code : Node_Id);
procedure Process_Extended_Import_Export_Object_Pragma
(Arg_Internal : Node_Id;
Arg_External : Node_Id;
Arg_Size : Node_Id);
procedure Process_Extended_Import_Export_Internal_Arg
(Arg_Internal : Node_Id := Empty);
procedure Process_Extended_Import_Export_Subprogram_Pragma
(Arg_Internal : Node_Id;
Arg_External : Node_Id;
Arg_Parameter_Types : Node_Id;
Arg_Result_Type : Node_Id := Empty;
Arg_Mechanism : Node_Id;
Arg_Result_Mechanism : Node_Id := Empty;
Arg_First_Optional_Parameter : Node_Id := Empty);
procedure Process_Generic_List;
procedure Process_Import_Or_Interface;
procedure Process_Inline (Active : Boolean);
procedure Process_Interface_Name
(Subprogram_Def : Entity_Id;
Ext_Arg : Node_Id;
Link_Arg : Node_Id);
procedure Process_Interrupt_Or_Attach_Handler;
procedure Process_Restrictions_Or_Restriction_Warnings;
procedure Process_Suppress_Unsuppress (Suppress_Case : Boolean);
procedure Set_Exported (E : Entity_Id; Arg : Node_Id);
procedure Set_Extended_Import_Export_External_Name
(Internal_Ent : Entity_Id;
Arg_External : Node_Id);
procedure Set_Imported (E : Entity_Id);
procedure Set_Mechanism_Value (Ent : Entity_Id; Mech_Name : Node_Id);
procedure Set_Ravenscar_Profile (N : Node_Id);
procedure Check_Ada_83_Warning is
begin
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;
procedure Check_Arg_Count (Required : Nat) is
begin
if Arg_Count /= Required then
Error_Pragma ("wrong number of arguments for pragma%");
end if;
end Check_Arg_Count;
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;
elsif Ada_Version = Ada_83
and then Nkind (Argx) = N_String_Literal
then
return;
elsif Is_Static_Expression (Argx) then
raise Pragma_Exit;
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;
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
("argument for pragma% must be identifier", Argx);
end if;
end Check_Arg_Is_Identifier;
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
("argument for pragma% must be integer literal", Argx);
end if;
end Check_Arg_Is_Integer_Literal;
procedure Check_Arg_Is_Library_Level_Local_Name (Arg : Node_Id) is
begin
Check_Arg_Is_Local_Name (Arg);
if not Is_Library_Level_Entity (Entity (Expression (Arg)))
and then Comes_From_Source (N)
then
Error_Pragma_Arg
("argument for pragma% must be library level entity", Arg);
end if;
end Check_Arg_Is_Library_Level_Local_Name;
procedure Check_Arg_Is_Local_Name (Arg : Node_Id) is
Argx : constant Node_Id := Get_Pragma_Arg (Arg);
begin
Analyze (Argx);
if Nkind (Argx) not in N_Direct_Name
and then (Nkind (Argx) /= N_Attribute_Reference
or else Present (Expressions (Argx))
or else Nkind (Prefix (Argx)) /= N_Identifier)
and then (not Is_Entity_Name (Argx)
or else not Is_Compilation_Unit (Entity (Argx)))
then
Error_Pragma_Arg ("argument for pragma% must be local name", Argx);
end if;
if Is_Entity_Name (Argx)
and then Scope (Entity (Argx)) /= Current_Scope
then
Error_Pragma_Arg
("pragma% argument must be in same declarative part", Arg);
end if;
end Check_Arg_Is_Local_Name;
procedure Check_Arg_Is_Locking_Policy (Arg : Node_Id) is
Argx : constant Node_Id := Get_Pragma_Arg (Arg);
begin
Check_Arg_Is_Identifier (Argx);
if not Is_Locking_Policy_Name (Chars (Argx)) then
Error_Pragma_Arg
("& is not a valid locking policy name", Argx);
end if;
end Check_Arg_Is_Locking_Policy;
procedure Check_Arg_Is_One_Of (Arg : Node_Id; N1, N2 : Name_Id) is
Argx : constant Node_Id := Get_Pragma_Arg (Arg);
begin
Check_Arg_Is_Identifier (Argx);
if Chars (Argx) /= N1 and then Chars (Argx) /= N2 then
Error_Msg_Name_2 := N1;
Error_Msg_Name_3 := N2;
Error_Pragma_Arg ("argument for pragma% must be% or%", Argx);
end if;
end Check_Arg_Is_One_Of;
procedure Check_Arg_Is_One_Of
(Arg : Node_Id;
N1, N2, N3 : Name_Id)
is
Argx : constant Node_Id := Get_Pragma_Arg (Arg);
begin
Check_Arg_Is_Identifier (Argx);
if Chars (Argx) /= N1
and then Chars (Argx) /= N2
and then Chars (Argx) /= N3
then
Error_Pragma_Arg ("invalid argument for pragma%", Argx);
end if;
end Check_Arg_Is_One_Of;
procedure Check_Arg_Is_Queuing_Policy (Arg : Node_Id) is
Argx : constant Node_Id := Get_Pragma_Arg (Arg);
begin
Check_Arg_Is_Identifier (Argx);
if not Is_Queuing_Policy_Name (Chars (Argx)) then
Error_Pragma_Arg
("& is not a valid queuing policy name", Argx);
end if;
end Check_Arg_Is_Queuing_Policy;
procedure Check_Arg_Is_Static_Expression
(Arg : Node_Id;
Typ : Entity_Id)
is
Argx : constant Node_Id := Get_Pragma_Arg (Arg);
begin
Analyze_And_Resolve (Argx, Typ);
if Is_OK_Static_Expression (Argx) then
return;
elsif Etype (Argx) = Any_Type then
raise Pragma_Exit;
elsif Ada_Version = Ada_83
and then Nkind (Argx) = N_String_Literal
then
return;
elsif Is_Static_Expression (Argx) then
raise Pragma_Exit;
else
Error_Msg_Name_1 := Chars (N);
Flag_Non_Static_Expr
("argument for pragma% must be a static expression!", Argx);
raise Pragma_Exit;
end if;
end Check_Arg_Is_Static_Expression;
procedure Check_Arg_Is_String_Literal (Arg : Node_Id) is
Argx : constant Node_Id := Get_Pragma_Arg (Arg);
begin
if Nkind (Argx) /= N_String_Literal then
Error_Pragma_Arg
("argument for pragma% must be string literal", Argx);
end if;
end Check_Arg_Is_String_Literal;
procedure Check_Arg_Is_Task_Dispatching_Policy (Arg : Node_Id) is
Argx : constant Node_Id := Get_Pragma_Arg (Arg);
begin
Check_Arg_Is_Identifier (Argx);
if not Is_Task_Dispatching_Policy_Name (Chars (Argx)) then
Error_Pragma_Arg
("& is not a valid task dispatching policy name", Argx);
end if;
end Check_Arg_Is_Task_Dispatching_Policy;
procedure Check_At_Least_N_Arguments (N : Nat) is
begin
if Arg_Count < N then
Error_Pragma ("too few arguments for pragma%");
end if;
end 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 loop;
end if;
end Check_At_Most_N_Arguments;
procedure Check_Component (Comp : Node_Id) is
begin
if Nkind (Comp) = N_Component_Declaration then
declare
Sindic : constant Node_Id :=
Subtype_Indication (Component_Definition (Comp));
begin
if Nkind (Sindic) = N_Subtype_Indication then
if Has_Per_Object_Constraint (Defining_Identifier (Comp))
and then
not Is_Unchecked_Union (Etype (Subtype_Mark (Sindic)))
then
Error_Msg_N ("component subtype subject to per-object" &
" constraint must be an Unchecked_Union", Comp);
end if;
end if;
end;
end if;
end Check_Component;
procedure Check_Duplicated_Export_Name (Nam : Node_Id) is
String_Val : constant String_Id := Strval (Nam);
begin
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;
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
("pragma% cannot apply to subtype", Argx);
end if;
end Check_First_Subtype;
procedure Check_In_Main_Program is
P : constant Node_Id := Parent (N);
begin
if Nkind (P) /= N_Subprogram_Body then
Error_Pragma ("% pragma allowed only in subprogram");
elsif Present (Parameter_Specifications (Specification (P)))
or else not Is_Compilation_Unit (Defining_Entity (P))
then
Error_Msg_Name_1 := Chars (N);
Error_Msg_N
("?pragma% is only effective in main program", N);
end if;
end Check_In_Main_Program;
procedure Check_Interrupt_Or_Attach_Handler is
Arg1_X : constant Node_Id := Expression (Arg1);
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_Attachment, N);
end if;
declare
Handler_Proc : Entity_Id := Empty;
Proc_Scope : Entity_Id;
Found : Boolean := False;
begin
if not Is_Overloaded (Arg1_X) then
Handler_Proc := Entity (Arg1_X);
else
declare
It : Interp;
Index : Interp_Index;
begin
Get_First_Interp (Arg1_X, Index, It);
while Present (It.Nam) loop
Handler_Proc := It.Nam;
if Ekind (Handler_Proc) = E_Procedure
and then No (First_Formal (Handler_Proc))
then
if not Found then
Found := True;
Set_Entity (Arg1_X, Handler_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
Handler_Proc := Entity (Arg1_X);
end if;
end;
end if;
Proc_Scope := Scope (Handler_Proc);
if AAMP_On_Target
and then Prag_Id = Pragma_Interrupt_Handler
then
if Ekind (Handler_Proc) /= E_Procedure then
Error_Pragma_Arg
("argument of pragma% must be a procedure", Arg1);
end if;
elsif Ekind (Handler_Proc) /= E_Procedure
or else Ekind (Proc_Scope) /= E_Protected_Type
then
Error_Pragma_Arg
("argument of pragma% must be protected procedure", Arg1);
end if;
if (not AAMP_On_Target or else Prag_Id = Pragma_Attach_Handler)
and then Ekind (Proc_Scope) = E_Protected_Type
then
if Parent (N) /=
Protected_Definition (Parent (Proc_Scope))
then
Error_Pragma ("pragma% must be in protected definition");
end if;
end if;
if not Is_Library_Level_Entity (Proc_Scope)
or else (AAMP_On_Target
and then not Is_Library_Level_Entity (Handler_Proc))
then
Error_Pragma_Arg
("pragma% requires library-level entity", Arg1);
end if;
if Present (First_Formal (Handler_Proc)) then
Error_Pragma_Arg
("argument of pragma% must be parameterless procedure",
Arg1);
end if;
end;
end Check_Interrupt_Or_Attach_Handler;
procedure Check_Is_In_Decl_Part_Or_Package_Spec is
P : Node_Id;
begin
P := Parent (N);
loop
if No (P) then
exit;
elsif Nkind (P) = N_Handled_Sequence_Of_Statements then
exit;
elsif Nkind (P) = N_Package_Specification then
return;
elsif Nkind (P) = N_Block_Statement then
return;
elsif Nkind (P) = N_Subprogram_Body
or else Nkind (P) = N_Package_Body
or else Nkind (P) = N_Task_Body
or else Nkind (P) = N_Entry_Body
then
return;
end if;
P := Parent (P);
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_Identifier (Arg : Node_Id) is
begin
if Chars (Arg) /= No_Name then
Error_Pragma_Arg_Ident
("pragma% does not permit identifier& here", Arg);
end if;
end Check_No_Identifier;
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 loop;
end if;
end Check_No_Identifiers;
procedure Check_Optional_Identifier (Arg : Node_Id; Id : Name_Id) is
begin
if Present (Arg) and then Chars (Arg) /= No_Name then
if Chars (Arg) /= Id then
Error_Msg_Name_1 := Chars (N);
Error_Msg_Name_2 := Id;
Error_Msg_N ("pragma% argument expects identifier%", Arg);
raise Pragma_Exit;
end if;
end if;
end Check_Optional_Identifier;
procedure Check_Optional_Identifier (Arg : Node_Id; Id : String) is
begin
Name_Buffer (1 .. Id'Length) := Id;
Name_Len := Id'Length;
Check_Optional_Identifier (Arg, Name_Find);
end Check_Optional_Identifier;
procedure Check_Static_Constraint (Constr : Node_Id) is
procedure Require_Static (E : Node_Id);
procedure Require_Static (E : Node_Id) is
begin
if not Is_OK_Static_Expression (E) then
Flag_Non_Static_Expr
("non-static constraint not allowed in Unchecked_Union!", E);
raise Pragma_Exit;
end if;
end Require_Static;
begin
case Nkind (Constr) is
when N_Discriminant_Association =>
Require_Static (Expression (Constr));
when N_Range =>
Require_Static (Low_Bound (Constr));
Require_Static (High_Bound (Constr));
when N_Attribute_Reference =>
Require_Static (Type_Low_Bound (Etype (Prefix (Constr))));
Require_Static (Type_High_Bound (Etype (Prefix (Constr))));
when N_Range_Constraint =>
Check_Static_Constraint (Range_Expression (Constr));
when N_Index_Or_Discriminant_Constraint =>
declare
IDC : Entity_Id;
begin
IDC := First (Constraints (Constr));
while Present (IDC) loop
Check_Static_Constraint (IDC);
Next (IDC);
end loop;
end;
when others =>
null;
end case;
end Check_Static_Constraint;
procedure Check_Valid_Configuration_Pragma is
begin
if not Is_Configuration_Pragma then
Error_Pragma ("incorrect placement for configuration pragma%");
end if;
end Check_Valid_Configuration_Pragma;
procedure Check_Valid_Library_Unit_Pragma is
Plist : List_Id;
Parent_Node : Node_Id;
Unit_Name : Entity_Id;
Unit_Kind : Node_Kind;
Unit_Node : Node_Id;
Sindex : Source_File_Index;
begin
if not Is_List_Member (N) then
Pragma_Misplaced;
else
Plist := List_Containing (N);
Parent_Node := Parent (Plist);
if Parent_Node = Empty then
Pragma_Misplaced;
elsif Nkind (Parent_Node) = N_Compilation_Unit_Aux then
if Plist /= Pragmas_After (Parent_Node) then
Pragma_Misplaced;
elsif Arg_Count = 0 then
Error_Pragma
("argument required if outside compilation unit");
else
Check_No_Identifiers;
Check_Arg_Count (1);
Unit_Node := Unit (Parent (Parent_Node));
Unit_Kind := Nkind (Unit_Node);
Analyze (Expression (Arg1));
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
Unit_Name := Defining_Entity (Unit_Node);
else
Unit_Name := Cunit_Entity (Current_Sem_Unit);
end if;
if Chars (Unit_Name) /=
Chars (Entity (Expression (Arg1)))
then
Error_Pragma_Arg
("pragma% argument is not current unit name", Arg1);
end if;
if Ekind (Unit_Name) = E_Package
and then Present (Renamed_Entity (Unit_Name))
then
Error_Pragma ("pragma% not allowed for renamed package");
end if;
end if;
else
Sindex := Source_Index (Current_Sem_Unit);
if Loc not in Source_First (Sindex) .. Source_Last (Sindex) then
Rewrite (N, Make_Null_Statement (Loc));
return;
elsif Is_Before_First_Decl (N, Plist) then
Unit_Node := Unit_Declaration_Node (Current_Scope);
Unit_Kind := Nkind (Unit_Node);
if Nkind (Parent (Unit_Node)) /= N_Compilation_Unit then
Pragma_Misplaced;
elsif Unit_Kind = N_Subprogram_Body
and then not Acts_As_Spec (Unit_Node)
then
Pragma_Misplaced;
elsif Nkind (Parent_Node) = N_Package_Body then
Pragma_Misplaced;
elsif Nkind (Parent_Node) = N_Package_Specification
and then Plist = Private_Declarations (Parent_Node)
then
Pragma_Misplaced;
elsif (Nkind (Parent_Node) = N_Generic_Package_Declaration
or else Nkind (Parent_Node)
= N_Generic_Subprogram_Declaration)
and then Plist = Generic_Formal_Declarations (Parent_Node)
then
Pragma_Misplaced;
elsif Arg_Count > 0 then
Analyze (Expression (Arg1));
if Entity (Expression (Arg1)) /= Current_Scope then
Error_Pragma_Arg
("name in pragma% must be enclosing unit", Arg1);
end if;
else
return;
end if;
else
Error_Pragma
("pragma% misplaced, must be before first declaration");
end if;
end if;
end if;
end Check_Valid_Library_Unit_Pragma;
procedure Check_Variant (Variant : Node_Id) is
Clist : constant Node_Id := Component_List (Variant);
Comp : Node_Id;
begin
if Present (Variant_Part (Clist)) then
Error_Msg_N
("Unchecked_Union may not have nested variants",
Variant_Part (Clist));
end if;
if not Is_Non_Empty_List (Component_Items (Clist)) then
Error_Msg_N
("Unchecked_Union may not have empty component list",
Variant);
return;
end if;
Comp := First (Component_Items (Clist));
while Present (Comp) loop
Check_Component (Comp);
Next (Comp);
end loop;
end Check_Variant;
procedure Error_Pragma (Msg : String) is
begin
Error_Msg_Name_1 := Chars (N);
Error_Msg_N (Msg, N);
raise Pragma_Exit;
end Error_Pragma;
procedure Error_Pragma_Arg (Msg : String; Arg : Node_Id) is
begin
Error_Msg_Name_1 := Chars (N);
Error_Msg_N (Msg, Get_Pragma_Arg (Arg));
raise Pragma_Exit;
end Error_Pragma_Arg;
procedure Error_Pragma_Arg (Msg1, Msg2 : String; Arg : Node_Id) is
begin
Error_Msg_Name_1 := Chars (N);
Error_Msg_N (Msg1, Get_Pragma_Arg (Arg));
Error_Pragma_Arg (Msg2, Arg);
end Error_Pragma_Arg;
procedure Error_Pragma_Arg_Ident (Msg : String; Arg : Node_Id) is
begin
Error_Msg_Name_1 := Chars (N);
Error_Msg_N (Msg, Arg);
raise Pragma_Exit;
end Error_Pragma_Arg_Ident;
function Find_Lib_Unit_Name return Entity_Id is
begin
if Nkind (Parent (N)) = N_Package_Specification
and then Defining_Entity (Parent (N)) /= Current_Scope
then
return Defining_Entity (Parent (N));
else
return Current_Scope;
end if;
end Find_Lib_Unit_Name;
procedure Find_Program_Unit_Name (Id : Node_Id) is
Unit_Name : Entity_Id;
Unit_Kind : Node_Kind;
P : constant Node_Id := Parent (N);
begin
if Nkind (P) = N_Compilation_Unit then
Unit_Kind := Nkind (Unit (P));
if Unit_Kind = N_Subprogram_Declaration
or else Unit_Kind = N_Package_Declaration
or else Unit_Kind in N_Generic_Declaration
then
Unit_Name := Defining_Entity (Unit (P));
if Chars (Id) = Chars (Unit_Name) then
Set_Entity (Id, Unit_Name);
Set_Etype (Id, Etype (Unit_Name));
else
Set_Etype (Id, Any_Type);
Error_Pragma
("cannot find program unit referenced by pragma%");
end if;
else
Set_Etype (Id, Any_Type);
Error_Pragma ("pragma% inapplicable to this unit");
end if;
else
Analyze (Id);
end if;
end Find_Program_Unit_Name;
procedure Gather_Associations
(Names : Name_List;
Args : out Args_List)
is
Arg : Node_Id;
begin
for J in Args'Range loop
Args (J) := Empty;
end loop;
if No (Pragma_Argument_Associations (N)) then
return;
end if;
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);
Next (Arg);
end loop;
if Present (Arg) and then Chars (Arg) = No_Name then
Error_Pragma_Arg
("too many positional associations for pragma%", Arg);
end if;
while Present (Arg) loop
if Chars (Arg) = No_Name then
Error_Pragma_Arg
("positional association cannot follow named association",
Arg);
else
for Index in Names'Range loop
if Names (Index) = Chars (Arg) then
if Present (Args (Index)) then
Error_Pragma_Arg
("duplicate argument association for pragma%", Arg);
else
Args (Index) := Expression (Arg);
exit;
end if;
end if;
if Index = Names'Last then
Error_Msg_Name_1 := Chars (N);
Error_Msg_N ("pragma% does not allow & argument", Arg);
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;
Next (Arg);
end loop;
end Gather_Associations;
function Get_Pragma_Arg (Arg : Node_Id) return Node_Id is
begin
if Nkind (Arg) = N_Pragma_Argument_Association then
return Expression (Arg);
else
return Arg;
end if;
end Get_Pragma_Arg;
procedure GNAT_Pragma is
begin
Check_Restriction (No_Implementation_Pragmas, N);
end GNAT_Pragma;
function Is_Before_First_Decl
(Pragma_Node : Node_Id;
Decls : List_Id) return Boolean
is
Item : Node_Id := First (Decls);
begin
loop
if No (Item) or else Nkind (Item) /= N_Pragma then
return False;
elsif Item = Pragma_Node then
return True;
end if;
Next (Item);
end loop;
end Is_Before_First_Decl;
function Is_Configuration_Pragma return Boolean is
Lis : constant List_Id := List_Containing (N);
Par : constant Node_Id := Parent (N);
Prg : Node_Id;
begin
if No (Par) then
return True;
elsif Nkind (Par) = N_Compilation_Unit
and then Context_Items (Par) = Lis
then
Prg := First (Lis);
loop
if Prg = N then
return True;
elsif Nkind (Prg) /= N_Pragma then
return False;
end if;
Next (Prg);
end loop;
else
return False;
end if;
end Is_Configuration_Pragma;
procedure Pragma_Misplaced is
begin
Error_Pragma ("incorrect placement of pragma%");
end Pragma_Misplaced;
procedure Process_Atomic_Shared_Volatile is
E_Id : Node_Id;
E : Entity_Id;
D : Node_Id;
K : Node_Kind;
Utyp : Entity_Id;
procedure Set_Atomic (E : Entity_Id);
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;
begin
Check_Ada_83_Warning;
Check_No_Identifiers;
Check_Arg_Count (1);
Check_Arg_Is_Local_Name (Arg1);
E_Id := Expression (Arg1);
if Etype (E_Id) = Any_Type then
return;
end if;
E := Entity (E_Id);
D := Declaration_Node (E);
K := Nkind (D);
if Is_Type (E) then
if Rep_Item_Too_Early (E, N)
or else
Rep_Item_Too_Late (E, N)
then
return;
else
Check_First_Subtype (Arg1);
end if;
if Prag_Id /= Pragma_Volatile then
Set_Atomic (E);
Set_Atomic (Underlying_Type (E));
Set_Atomic (Base_Type (E));
end if;
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)
then
if Rep_Item_Too_Late (E, N) then
return;
end if;
if Prag_Id /= Pragma_Volatile then
Set_Is_Atomic (E);
if Nkind (Parent (E)) = N_Object_Declaration
and then Present (Expression (Parent (E)))
then
Set_Has_Delayed_Freeze (E);
end if;
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
("inappropriate entity for pragma%", Arg1);
end if;
end Process_Atomic_Shared_Volatile;
procedure Process_Convention
(C : out Convention_Id;
E : out Entity_Id)
is
Id : Node_Id;
E1 : Entity_Id;
Cname : Name_Id;
Comp_Unit : Unit_Number_Type;
procedure Set_Convention_From_Pragma (E : Entity_Id);
procedure Set_Convention_From_Pragma (E : Entity_Id) is
begin
Set_Convention (E, C);
Set_Has_Convention_Pragma (E);
if Is_Incomplete_Or_Private_Type (E) then
Set_Convention (Underlying_Type (E), C);
Set_Has_Convention_Pragma (Underlying_Type (E), True);
end if;
if Is_Type (E) and then Present (Class_Wide_Type (E)) then
Set_Convention (Class_Wide_Type (E), C);
end if;
if Cname = Name_C_Pass_By_Copy then
if Is_Record_Type (E) then
Set_C_Pass_By_Copy (Base_Type (E));
elsif Is_Incomplete_Or_Private_Type (E)
and then Is_Record_Type (Underlying_Type (E))
then
Set_C_Pass_By_Copy (Base_Type (Underlying_Type (E)));
else
Error_Pragma_Arg
("C_Pass_By_Copy convention allowed only for record type",
Arg2);
end if;
end if;
if Is_Discrete_Type (E)
and then Root_Type (Etype (E)) = Standard_Boolean
and then
(C = Convention_C
or else
C = Convention_CPP
or else
C = Convention_Fortran)
then
Set_Nonzero_Is_True (Base_Type (E));
end if;
end Set_Convention_From_Pragma;
begin
Check_At_Least_N_Arguments (2);
Check_Arg_Is_Identifier (Arg1);
Check_Optional_Identifier (Arg1, Name_Convention);
Cname := Chars (Expression (Arg1));
if Cname = Name_C_Pass_By_Copy then
C := Convention_C;
elsif Is_Convention_Name (Cname) then
C := Get_Convention_Id (Chars (Expression (Arg1)));
else
if Warn_On_Export_Import and not OpenVMS_On_Target then
Error_Msg_N
("?unrecognized convention name, C assumed",
Expression (Arg1));
end if;
C := Convention_C;
end if;
Check_Arg_Is_Local_Name (Arg2);
Check_Optional_Identifier (Arg2, Name_Entity);
Id := Expression (Arg2);
Analyze (Id);
if not Is_Entity_Name (Id) then
Error_Pragma_Arg ("entity name required", Arg2);
end if;
E := Entity (Id);
if Is_Subprogram (E)
and then Present (Alias (E))
then
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;
if Is_Subprogram (E)
and then Nkind (Parent (Declaration_Node (E))) = N_Subprogram_Body
then
Error_Pragma
("pragma% requires separate spec and must come before body");
end if;
if Ekind (E) = E_Named_Integer
or else
Ekind (E) = E_Named_Real
then
Error_Msg_Name_1 := Chars (N);
Error_Msg_N
("cannot apply pragma% to named constant!",
Get_Pragma_Arg (Arg2));
Error_Pragma_Arg
("\supply appropriate type for&!", Arg2);
end if;
if Etype (E) = Any_Type
or else Rep_Item_Too_Early (E, N)
then
raise Pragma_Exit;
else
E := Underlying_Type (E);
end if;
if Rep_Item_Too_Late (E, N) then
raise Pragma_Exit;
end if;
if Has_Convention_Pragma (E) then
Error_Pragma_Arg
("at most one Convention/Export/Import pragma is allowed", Arg2);
elsif Convention (E) = Convention_Protected
or else Ekind (Scope (E)) = E_Protected_Type
then
Error_Pragma_Arg
("a protected operation cannot be given a different convention",
Arg2);
end if;
if C = Convention_Intrinsic
and then not Is_Subprogram (E)
and then not Is_Generic_Subprogram (E)
then
Error_Pragma_Arg
("second argument of pragma% must be a subprogram", Arg2);
end if;
if C = Convention_Stdcall
and then not Is_Subprogram (E)
and then not Is_Generic_Subprogram (E)
and then Ekind (E) /= E_Variable
and then not
(Is_Access_Type (E)
and then Ekind (Designated_Type (E)) = E_Subprogram_Type)
then
Error_Pragma_Arg
("second argument of pragma% must be subprogram (type)",
Arg2);
end if;
if not Is_Subprogram (E)
and then not Is_Generic_Subprogram (E)
then
Set_Convention_From_Pragma (E);
if Is_Type (E) then
Check_First_Subtype (Arg2);
Set_Convention_From_Pragma (Base_Type (E));
if Ekind (E) = E_Access_Subprogram_Type then
Set_Convention_From_Pragma (Directly_Designated_Type (E));
end if;
end if;
else
Comp_Unit := Get_Source_Unit (E);
Set_Convention_From_Pragma (E);
if Prag_Id = Pragma_Import then
Generate_Reference (E, Id, 'b');
end if;
E1 := E;
loop
E1 := Homonym (E1);
exit when No (E1) or else Scope (E1) /= Current_Scope;
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;
procedure Process_Extended_Import_Export_Exception_Pragma
(Arg_Internal : Node_Id;
Arg_External : Node_Id;
Arg_Form : Node_Id;
Arg_Code : Node_Id)
is
Def_Id : Entity_Id;
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);
if Ekind (Def_Id) /= E_Exception then
Error_Pragma_Arg
("pragma% must refer to declared exception", Arg_Internal);
end if;
Set_Extended_Import_Export_External_Name (Def_Id, Arg_External);
if Present (Arg_Form) then
Check_Arg_Is_One_Of (Arg_Form, Name_Ada, Name_VMS);
end if;
if Present (Arg_Form)
and then Chars (Arg_Form) = Name_Ada
then
null;
else
Set_Is_VMS_Exception (Def_Id);
Set_Exception_Code (Def_Id, No_Uint);
end if;
if Present (Arg_Code) then
if not Is_VMS_Exception (Def_Id) then
Error_Pragma_Arg
("Code option for pragma% not allowed for Ada case",
Arg_Code);
end if;
Check_Arg_Is_Static_Expression (Arg_Code, Any_Integer);
Code_Val := Expr_Value (Arg_Code);
if not UI_Is_In_Int_Range (Code_Val) then
Error_Pragma_Arg
("Code option for pragma% must be in 32-bit range",
Arg_Code);
else
Set_Exception_Code (Def_Id, Code_Val);
end if;
end if;
end Process_Extended_Import_Export_Exception_Pragma;
procedure Process_Extended_Import_Export_Internal_Arg
(Arg_Internal : Node_Id := Empty)
is
begin
GNAT_Pragma;
if No (Arg_Internal) then
Error_Pragma ("Internal parameter required for pragma%");
end if;
if Nkind (Arg_Internal) = N_Identifier then
null;
elsif Nkind (Arg_Internal) = N_Operator_Symbol
and then (Prag_Id = Pragma_Import_Function
or else
Prag_Id = Pragma_Export_Function)
then
null;
else
Error_Pragma_Arg
("wrong form for Internal parameter for pragma%", Arg_Internal);
end if;
Check_Arg_Is_Local_Name (Arg_Internal);
end Process_Extended_Import_Export_Internal_Arg;
procedure Process_Extended_Import_Export_Object_Pragma
(Arg_Internal : Node_Id;
Arg_External : Node_Id;
Arg_Size : Node_Id)
is
Def_Id : Entity_Id;
begin
Process_Extended_Import_Export_Internal_Arg (Arg_Internal);
Def_Id := Entity (Arg_Internal);
if Ekind (Def_Id) /= E_Constant
and then Ekind (Def_Id) /= E_Variable
then
Error_Pragma_Arg
("pragma% must designate an object", Arg_Internal);
end if;
if Has_Rep_Pragma (Def_Id, Name_Common_Object)
or else
Has_Rep_Pragma (Def_Id, Name_Psect_Object)
then
Error_Pragma_Arg
("previous Common/Psect_Object applies, pragma % not permitted",
Arg_Internal);
end if;
if Rep_Item_Too_Late (Def_Id, N) then
raise Pragma_Exit;
end if;
Set_Extended_Import_Export_External_Name (Def_Id, Arg_External);
if Present (Arg_Size) then
Check_Arg_Is_External_Name (Arg_Size);
end if;
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 Ekind (Current_Scope) = E_Generic_Package then
Error_Pragma ("pragma& cannot appear in a generic unit");
end if;
if not Size_Known_At_Compile_Time (Etype (Def_Id)) then
Error_Pragma_Arg
("exported object must have compile time known size",
Arg_Internal);
end if;
if Warn_On_Export_Import and then Is_Exported (Def_Id) then
Error_Msg_N
("?duplicate Export_Object pragma", N);
else
Set_Exported (Def_Id, Arg_Internal);
end if;
else
if Is_Concurrent_Type (Etype (Def_Id)) then
Error_Pragma_Arg
("cannot use pragma% for task/protected object",
Arg_Internal);
end if;
if Ekind (Def_Id) = E_Constant then
Error_Pragma_Arg
("cannot import a constant", Arg_Internal);
end if;
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 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 Warn_On_Export_Import
and then Is_Imported (Def_Id)
then
Error_Msg_N
("?duplicate Import_Object pragma", N);
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;
procedure Process_Extended_Import_Export_Subprogram_Pragma
(Arg_Internal : Node_Id;
Arg_External : Node_Id;
Arg_Parameter_Types : Node_Id;
Arg_Result_Type : Node_Id := Empty;
Arg_Mechanism : Node_Id;
Arg_Result_Mechanism : Node_Id := Empty;
Arg_First_Optional_Parameter : Node_Id := Empty)
is
Ent : Entity_Id;
Def_Id : Entity_Id;
Hom_Id : Entity_Id;
Formal : Entity_Id;
Ambiguous : Boolean;
Match : Boolean;
Dval : Node_Id;
function Same_Base_Type
(Ptype : Node_Id;
Formal : Entity_Id) return Boolean;
function Same_Base_Type
(Ptype : Node_Id;
Formal : Entity_Id) return Boolean
is
Ftyp : constant Entity_Id := Base_Type (Etype (Formal));
Pref : Node_Id;
begin
if Nkind (Ptype) = N_Attribute_Reference
and then Attribute_Name (Ptype) = Name_Access
then
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 Ekind (Ftyp) = E_Anonymous_Access_Type
and then Base_Type (Entity (Pref)) =
Base_Type (Etype (Designated_Type (Ftyp)));
else
Find_Type (Ptype);
if not Is_Entity_Name (Ptype)
or else Entity (Ptype) = Any_Type
then
raise Pragma_Exit;
end if;
return Base_Type (Entity (Ptype)) = Ftyp;
end if;
end Same_Base_Type;
begin
Process_Extended_Import_Export_Internal_Arg (Arg_Internal);
Ent := Empty;
Ambiguous := False;
Hom_Id := Entity (Arg_Internal);
while Present (Hom_Id) loop
Def_Id := Get_Base_Subprogram (Hom_Id);
if not Is_Subprogram (Def_Id)
or else Scope (Def_Id) /= Current_Scope
then
null;
else
Match := True;
if Is_Subprogram (Def_Id)
and then
Nkind (Parent
(Declaration_Node (Def_Id))) = N_Subprogram_Body
then
Error_Pragma
("pragma% requires separate spec"
& " and must come before body");
end if;
if Present (Arg_Result_Type)
and then not Same_Base_Type (Arg_Result_Type, Def_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;
elsif Present (Arg_Parameter_Types) then
Check_Matching_Types : declare
Formal : Entity_Id;
Ptype : Node_Id;
begin
Formal := First_Formal (Def_Id);
if Nkind (Arg_Parameter_Types) = N_Null then
if Present (Formal) then
Match := False;
end if;
elsif Nkind (Arg_Parameter_Types) /= N_Aggregate
and then Paren_Count (Arg_Parameter_Types) = 1
then
if No (Formal)
or else Present (Next_Formal (Formal))
then
Match := False;
else
Match :=
Same_Base_Type (Arg_Parameter_Types, Formal);
end if;
elsif Nkind (Arg_Parameter_Types) = N_Aggregate
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)
or else not Same_Base_Type (Ptype, Formal)
then
Match := False;
exit;
else
Next_Formal (Formal);
Next (Ptype);
end if;
end loop;
else
Error_Pragma_Arg
("wrong form for Parameter_Types parameter",
Arg_Parameter_Types);
end if;
end Check_Matching_Types;
end if;
if Match then
if No (Ent) then
Ent := Def_Id;
else
if not Ambiguous then
Ambiguous := True;
Error_Msg_Name_1 := Chars (N);
Error_Msg_N
("pragma% does not uniquely identify subprogram!",
N);
Error_Msg_Sloc := Sloc (Ent);
Error_Msg_N ("matching subprogram #!", N);
Ent := Empty;
end if;
Error_Msg_Sloc := Sloc (Def_Id);
Error_Msg_N ("matching subprogram #!", N);
end if;
end if;
end if;
Hom_Id := Homonym (Hom_Id);
end loop;
if No (Ent) then
if not Ambiguous then
if Is_Generic_Subprogram (Entity (Arg_Internal)) then
Error_Pragma
("pragma% cannot be given for generic subprogram");
else
Error_Pragma
("pragma% does not identify local subprogram");
end if;
end if;
return;
end if;
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;
elsif Nkind (Arg_External) = N_String_Literal
and then String_Length (Strval (Arg_External)) = 0
then
null;
else
Set_Exported (Ent, Arg_Internal);
end if;
if Prag_Id = Pragma_Import_Valued_Procedure
or else
Prag_Id = Pragma_Export_Valued_Procedure
then
Formal := First_Formal (Ent);
if No (Formal) then
Error_Pragma
("at least one parameter required for pragma%");
elsif Ekind (Formal) /= E_Out_Parameter then
Error_Pragma
("first parameter must have mode out for pragma%");
else
Set_Is_Valued_Procedure (Ent);
end if;
end if;
Set_Extended_Import_Export_External_Name (Ent, Arg_External);
if Present (Arg_Result_Mechanism) then
Set_Mechanism_Value (Ent, Arg_Result_Mechanism);
end if;
if Present (Arg_Mechanism) then
declare
Formal : Entity_Id;
Massoc : Node_Id;
Mname : Node_Id;
Choice : Node_Id;
begin
if Nkind (Arg_Mechanism) /= N_Aggregate
and then Paren_Count (Arg_Mechanism) = 1
then
Rewrite (Arg_Mechanism,
Make_Aggregate (Sloc (Arg_Mechanism),
Expressions => New_List (
Relocate_Node (Arg_Mechanism))));
end if;
if Nkind (Arg_Mechanism) /= N_Aggregate then
Formal := First_Formal (Ent);
while Present (Formal) loop
Set_Mechanism_Value (Formal, Arg_Mechanism);
Next_Formal (Formal);
end loop;
else
if Null_Record_Present (Arg_Mechanism) then
Error_Pragma_Arg
("inappropriate form for Mechanism parameter",
Arg_Mechanism);
end if;
Formal := First_Formal (Ent);
if Present (Expressions (Arg_Mechanism)) then
Mname := First (Expressions (Arg_Mechanism));
while Present (Mname) loop
if No (Formal) then
Error_Pragma_Arg
("too many mechanism associations", Mname);
end if;
Set_Mechanism_Value (Formal, Mname);
Next_Formal (Formal);
Next (Mname);
end loop;
end if;
if Present (Component_Associations (Arg_Mechanism)) then
Massoc := First (Component_Associations (Arg_Mechanism));
while Present (Massoc) loop
Choice := First (Choices (Massoc));
if Nkind (Choice) /= N_Identifier
or else Present (Next (Choice))
then
Error_Pragma_Arg
("incorrect form for mechanism association",
Massoc);
end if;
Formal := First_Formal (Ent);
loop
if No (Formal) then
Error_Pragma_Arg
("parameter name & not present", Choice);
end if;
if Chars (Choice) = Chars (Formal) then
Set_Mechanism_Value
(Formal, Expression (Massoc));
exit;
end if;
Next_Formal (Formal);
end loop;
Next (Massoc);
end loop;
end if;
end if;
end;
end if;
if Present (Arg_First_Optional_Parameter) then
if Nkind (Arg_First_Optional_Parameter) /= N_Identifier then
Error_Pragma_Arg
("first optional parameter must be formal parameter name",
Arg_First_Optional_Parameter);
end if;
Formal := First_Formal (Ent);
loop
if No (Formal) then
Error_Pragma_Arg
("specified formal parameter& not found",
Arg_First_Optional_Parameter);
end if;
exit when Chars (Formal) =
Chars (Arg_First_Optional_Parameter);
Next_Formal (Formal);
end loop;
Set_First_Optional_Parameter (Ent, Formal);
while Present (Formal) loop
if Ekind (Formal) /= E_In_Parameter then
Error_Msg_NE
("optional formal& is not of mode in!",
Arg_First_Optional_Parameter, Formal);
else
Dval := Default_Value (Formal);
if not Present (Dval) then
Error_Msg_NE
("optional formal& does not have default value!",
Arg_First_Optional_Parameter, Formal);
elsif Compile_Time_Known_Value_Or_Aggr (Dval) then
null;
else
Error_Msg_FE
("default value for optional formal& is non-static!",
Arg_First_Optional_Parameter, Formal);
end if;
end if;
Set_Is_Optional_Parameter (Formal);
Next_Formal (Formal);
end loop;
end if;
end Process_Extended_Import_Export_Subprogram_Pragma;
procedure Process_Generic_List is
Arg : Node_Id;
Exp : Node_Id;
begin
GNAT_Pragma;
Check_No_Identifiers;
Check_At_Least_N_Arguments (1);
Arg := Arg1;
while Present (Arg) loop
Exp := Expression (Arg);
Analyze (Exp);
if not Is_Entity_Name (Exp)
or else
(not Is_Generic_Instance (Entity (Exp))
and then
not Is_Generic_Unit (Entity (Exp)))
then
Error_Pragma_Arg
("pragma% argument must be name of generic unit/instance",
Arg);
end if;
Next (Arg);
end loop;
end Process_Generic_List;
procedure Process_Import_Or_Interface is
C : Convention_Id;
Def_Id : Entity_Id;
Hom_Id : Entity_Id;
begin
Process_Convention (C, Def_Id);
Kill_Size_Check_Code (Def_Id);
Note_Possible_Modification (Expression (Arg2));
if Ekind (Def_Id) = E_Variable
or else
Ekind (Def_Id) = E_Constant
then
if Present (Expression (Parent (Def_Id)))
and then Comes_From_Source (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))",
Arg2);
else
Set_Imported (Def_Id);
Process_Interface_Name (Def_Id, Arg3, Arg4);
if Ekind (Def_Id) = E_Constant then
Set_Has_Completion (Def_Id);
end if;
if Is_Array_Type (Etype (Def_Id))
and then not Is_Constrained (Etype (Def_Id))
then
Error_Msg_NE
("imported constant& must have a constrained subtype",
N, Def_Id);
end if;
end if;
elsif Is_Subprogram (Def_Id)
or else Is_Generic_Subprogram (Def_Id)
then
Hom_Id := Def_Id;
while Present (Hom_Id) loop
Def_Id := Get_Base_Subprogram (Hom_Id);
if Is_Overloadable (Def_Id)
and then Present (Alias (Def_Id))
then
null;
elsif not Is_Subprogram (Def_Id)
and then not Is_Generic_Subprogram (Def_Id)
then
null;
elsif Parent (Unit_Declaration_Node (Def_Id)) /= Parent (N)
and then Nkind (Parent (N)) /= N_Compilation_Unit_Aux
then
exit;
else
Set_Imported (Def_Id);
if C = Convention_Intrinsic then
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);
if No (Arg3) then
Check_Intrinsic_Subprogram (Def_Id, Expression (Arg2));
end if;
end if;
Set_Is_Public (Def_Id);
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;
if Is_Compilation_Unit (Hom_Id) then
exit;
else
Hom_Id := Homonym (Hom_Id);
end if;
end loop;
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)
then
Set_Imported (Def_Id);
Set_Is_Public (Def_Id);
Process_Interface_Name (Def_Id, Arg3, Arg4);
else
Error_Pragma_Arg
("second argument of pragma% must be object or subprogram",
Arg2);
end if;
if Nkind (Parent (N)) = N_Compilation_Unit_Aux then
declare
Cunit : constant Node_Id := Parent (Parent (N));
begin
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;
Effective : Boolean := False;
procedure Make_Inline (Subp : Entity_Id);
procedure Set_Inline_Flags (Subp : Entity_Id);
function Inlining_Not_Possible (Subp : Entity_Id) return Boolean;
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;
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
return False;
end if;
end Inlining_Not_Possible;
procedure Make_Inline (Subp : Entity_Id) is
Kind : constant Entity_Kind := Ekind (Subp);
Inner_Subp : Entity_Id := Subp;
begin
if Etype (Subp) = Any_Type then
return;
elsif Inlining_Not_Possible (Subp) then
Applies := True;
return;
elsif not Comes_From_Source (Subp)
and then not Is_Generic_Instance (Subp)
and then Scope (Subp) /= Standard_Standard
then
Applies := True;
return;
elsif Present (Scope (Subp))
and then Scope (Subp) /= Current_Scope
and then Subp /= Current_Scope
then
Error_Pragma_Arg
("argument of% must be entity in current scope", Assoc);
return;
end if;
if Is_Subprogram (Subp) then
while Present (Alias (Inner_Subp)) loop
Inner_Subp := Alias (Inner_Subp);
end loop;
if In_Same_Source_Unit (Subp, Inner_Subp) then
Set_Inline_Flags (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));
end if;
end if;
Applies := True;
elsif Is_Generic_Subprogram (Subp) then
Set_Inline_Flags (Subp);
Applies := True;
elsif Kind = E_Enumeration_Literal then
null;
else
Error_Pragma_Arg
("expect subprogram name for pragma%", Assoc);
end if;
end Make_Inline;
procedure Set_Inline_Flags (Subp : Entity_Id) is
begin
if Active then
Set_Is_Inlined (Subp, True);
end if;
if not Has_Pragma_Inline (Subp) then
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;
begin
Check_No_Identifiers;
Check_At_Least_N_Arguments (1);
if Active then
Inline_Processing_Required := True;
end if;
Assoc := Arg1;
while Present (Assoc) loop
Subp_Id := Expression (Assoc);
Analyze (Subp_Id);
Applies := False;
if Is_Entity_Name (Subp_Id) then
Subp := Entity (Subp_Id);
if Subp = Any_Id then
Applies := True;
else
Make_Inline (Subp);
while Present (Homonym (Subp))
and then Scope (Homonym (Subp)) = Current_Scope
loop
Make_Inline (Homonym (Subp));
Subp := Homonym (Subp);
end loop;
end if;
end if;
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;
procedure Process_Interface_Name
(Subprogram_Def : Entity_Id;
Ext_Arg : Node_Id;
Link_Arg : Node_Id)
is
Ext_Nam : Node_Id;
Link_Nam : Node_Id;
String_Val : String_Id;
procedure Check_Form_Of_Interface_Name (SN : Node_Id);
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);
C : Char_Code;
begin
if SL = 0 then
Error_Msg_N ("interface name cannot be null string", SN);
end if;
for J in 1 .. SL loop
C := Get_String_Char (S, J);
if Warn_On_Export_Import
and then (not In_Character_Range (C)
or else Get_Character (C) = ' '
or else Get_Character (C) = ',')
then
Error_Msg_N
("?interface name contains illegal character", SN);
end if;
end loop;
end Check_Form_Of_Interface_Name;
begin
if No (Link_Arg) then
if No (Ext_Arg) then
return;
elsif Chars (Ext_Arg) = Name_Link_Name then
Ext_Nam := Empty;
Link_Nam := Expression (Ext_Arg);
else
Check_Optional_Identifier (Ext_Arg, Name_External_Name);
Ext_Nam := Expression (Ext_Arg);
Link_Nam := Empty;
end if;
else
Check_Optional_Identifier (Ext_Arg, Name_External_Name);
Check_Optional_Identifier (Link_Arg, Name_Link_Name);
Ext_Nam := Expression (Ext_Arg);
Link_Nam := Expression (Link_Arg);
end if;
if Present (Ext_Nam) then
Check_Arg_Is_Static_Expression (Ext_Nam, Standard_String);
Check_Form_Of_Interface_Name (Ext_Nam);
declare
Nam : Name_Id;
E : Entity_Id;
Par : Node_Id;
begin
if Prag_Id = Pragma_Import then
String_To_Name_Buffer (Strval (Expr_Value_S (Ext_Nam)));
Nam := Name_Find;
E := Entity_Id (Get_Name_Table_Info (Nam));
if Nam /= Chars (Subprogram_Def)
and then Present (E)
and then not Is_Overloadable (E)
and then Is_Immediately_Visible (E)
and then not Is_Imported (E)
and then Ekind (Scope (E)) = E_Package
then
Par := Parent (E);
while Present (Par) loop
if Nkind (Par) = N_Package_Body then
Error_Msg_Sloc := Sloc (E);
Error_Msg_NE
("imported entity is hidden by & declared#",
Ext_Arg, E);
exit;
end if;
Par := Parent (Par);
end loop;
end if;
end if;
end;
end if;
if Present (Link_Nam) then
Check_Arg_Is_Static_Expression (Link_Nam, Standard_String);
Check_Form_Of_Interface_Name (Link_Nam);
end if;
if No (Link_Nam) then
Link_Nam := Adjust_External_Name_Case (Expr_Value_S (Ext_Nam));
else
Start_String;
Store_String_Char (Get_Char_Code ('*'));
String_Val := Strval (Expr_Value_S (Link_Nam));
for J in 1 .. String_Length (String_Val) loop
Store_String_Char (Get_String_Char (String_Val, J));
end loop;
Link_Nam :=
Make_String_Literal (Sloc (Link_Nam), End_String);
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);
Handler_Proc : constant Entity_Id := Entity (Arg1_X);
Proc_Scope : constant Entity_Id := Scope (Handler_Proc);
begin
Set_Is_Interrupt_Handler (Handler_Proc);
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;
procedure Process_Restrictions_Or_Restriction_Warnings is
Arg : Node_Id;
R_Id : Restriction_Id;
Id : Name_Id;
Expr : Node_Id;
Val : Uint;
procedure Check_Unit_Name (N : Node_Id);
procedure Set_Warning (R : All_Restrictions);
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;
procedure Set_Warning (R : All_Restrictions) is
begin
if Prag_Id = Pragma_Restriction_Warnings then
Restriction_Warnings (R) := True;
else
Restriction_Warnings (R) := False;
end if;
end Set_Warning;
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);
if Id = No_Name then
if Nkind (Expr) /= N_Identifier then
Error_Pragma_Arg
("invalid form for restriction", Arg);
end if;
R_Id :=
Get_Restriction_Id
(Process_Restriction_Synonyms (Expr));
if R_Id not in All_Boolean_Restrictions then
Error_Pragma_Arg
("invalid restriction identifier", Arg);
end if;
if Implementation_Restriction (R_Id) then
Check_Restriction
(No_Implementation_Restrictions, Arg);
end if;
Set_Restriction (R_Id, N);
Set_Warning (R_Id);
if R_Id = No_Exceptions then
Scope_Suppress := (others => True);
end if;
elsif Id = Name_No_Dependence then
Check_Unit_Name (Expr);
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);
else
Val := Expr_Value (Expr);
if not UI_Is_In_Int_Range (Val) then
Error_Pragma_Arg
("pragma ignored, value too large?", Arg);
else
Set_Restriction (R_Id, N, Integer (UI_To_Int (Val)));
Set_Warning (R_Id);
end if;
end if;
end if;
Next (Arg);
end loop;
end Process_Restrictions_Or_Restriction_Warnings;
procedure Process_Suppress_Unsuppress (Suppress_Case : Boolean) is
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);
procedure Suppress_Unsuppress_Echeck (E : Entity_Id; C : Check_Id) is
ESR : constant Entity_Check_Suppress_Record :=
(Entity => E,
Check => C,
Suppress => Suppress_Case);
begin
Set_Checks_May_Be_Suppressed (E);
if In_Package_Spec then
Global_Entity_Suppress.Append (ESR);
else
Local_Entity_Suppress.Append (ESR);
end if;
if Is_First_Subtype (E)
and then Etype (E) /= E
then
Suppress_Unsuppress_Echeck (Etype (E), C);
end if;
end Suppress_Unsuppress_Echeck;
begin
if not Is_Configuration_Pragma then
Check_Is_In_Decl_Part_Or_Package_Spec;
end if;
Check_At_Least_N_Arguments (1);
Check_At_Most_N_Arguments (2);
Check_No_Identifier (Arg1);
Check_Arg_Is_Identifier (Arg1);
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
if C = All_Checks then
for J in Scope_Suppress'Range loop
Scope_Suppress (J) := Suppress_Case;
end loop;
else
Scope_Suppress (C) := Suppress_Case;
end if;
Local_Entity_Suppress.Append
((Entity => Empty,
Check => C,
Suppress => Suppress_Case));
else
Check_Optional_Identifier (Arg2, Name_On);
E_Id := Expression (Arg2);
Analyze (E_Id);
if not Is_Entity_Name (E_Id) then
Error_Pragma_Arg
("second argument of pragma% must be entity name", Arg2);
end if;
E := Entity (E_Id);
if E = Any_Id then
return;
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
Suppress_Unsuppress_Echeck (E, C);
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);
exit when No (E);
exit when In_Package_Spec
and then Scope (E) /= Current_Scope;
end loop;
end if;
end Process_Suppress_Unsuppress;
procedure Set_Exported (E : Entity_Id; Arg : Node_Id) is
begin
if Is_Imported (E) then
Error_Pragma_Arg
("cannot export entity& that was previously imported", Arg);
elsif Present (Address_Clause (E)) then
Error_Pragma_Arg
("cannot export entity& that has an address clause", Arg);
end if;
Set_Is_Exported (E);
Generate_Reference (E, Arg);
if not Is_Library_Level_Entity (E) then
if Is_Subprogram (E) then
Error_Pragma_Arg ("local subprogram& cannot be exported", Arg);
else
Set_Is_Public (E);
Set_Is_Statically_Allocated (E);
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 Warn_On_Export_Import and then Is_Type (E) then
Error_Msg_NE
("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;
procedure Set_Extended_Import_Export_External_Name
(Internal_Ent : Entity_Id;
Arg_External : Node_Id)
is
Old_Name : constant Node_Id := Interface_Name (Internal_Ent);
New_Name : Node_Id;
begin
if No (Arg_External) then
return;
end if;
Check_Arg_Is_External_Name (Arg_External);
if Nkind (Arg_External) = N_String_Literal then
if String_Length (Strval (Arg_External)) = 0 then
return;
else
New_Name := Adjust_External_Name_Case (Arg_External);
end if;
elsif Nkind (Arg_External) = N_Identifier then
New_Name := Get_Default_External_Name (Arg_External);
else
raise Program_Error;
end if;
if Present (Interface_Name (Internal_Ent)) then
Check_Matching_Internal_Names : declare
S1 : constant String_Id := Strval (Old_Name);
S2 : constant String_Id := Strval (New_Name);
procedure Mismatch;
procedure Mismatch is
begin
Error_Msg_Sloc := Sloc (Old_Name);
Error_Pragma_Arg
("external name does not match that given #",
Arg_External);
end Mismatch;
begin
if String_Length (S1) /= String_Length (S2) then
Mismatch;
else
for J in 1 .. String_Length (S1) loop
if Get_String_Char (S1, J) /= Get_String_Char (S2, J) then
Mismatch;
end if;
end loop;
end if;
end Check_Matching_Internal_Names;
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 Set_Imported (E : Entity_Id) is
begin
Error_Msg_Sloc := Sloc (E);
if Is_Exported (E) or else Is_Imported (E) then
Error_Msg_NE ("import of& declared# not allowed", N, E);
if Is_Exported (E) then
Error_Msg_N ("\entity was previously exported", N);
else
Error_Msg_N ("\entity was previously imported", N);
end if;
Error_Pragma ("\(pragma% applies to all previous entities)");
else
Set_Is_Imported (E);
if Is_Object (E)
and then not Is_Library_Level_Entity (E)
and then No (Address_Clause (E))
then
Set_Is_Statically_Allocated (E);
end if;
end if;
end Set_Imported;
procedure Set_Mechanism_Value (Ent : Entity_Id; Mech_Name : Node_Id) is
Class : Node_Id;
Param : Node_Id;
procedure Bad_Class;
procedure Bad_Mechanism;
procedure Bad_Class is
begin
Error_Pragma_Arg ("unrecognized descriptor class name", Class);
end Bad_Class;
procedure Bad_Mechanism is
begin
Error_Pragma_Arg ("unrecognized mechanism name", Mech_Name);
end Bad_Mechanism;
begin
if Mechanism (Ent) /= Default_Mechanism then
Error_Msg_NE
("mechanism for & has already been set", Mech_Name, Ent);
end if;
if Nkind (Mech_Name) = N_Identifier then
if Chars (Mech_Name) = Name_Value then
Set_Mechanism (Ent, By_Copy);
return;
elsif Chars (Mech_Name) = Name_Reference then
Set_Mechanism (Ent, By_Reference);
return;
elsif Chars (Mech_Name) = Name_Descriptor then
Check_VMS (Mech_Name);
Set_Mechanism (Ent, By_Descriptor);
return;
elsif Chars (Mech_Name) = Name_Copy then
Error_Pragma_Arg
("bad mechanism name, Value assumed", Mech_Name);
else
Bad_Mechanism;
end if;
elsif Nkind (Mech_Name) = N_Indexed_Component then
Class := First (Expressions (Mech_Name));
if Nkind (Prefix (Mech_Name)) /= N_Identifier
or else Chars (Prefix (Mech_Name)) /= Name_Descriptor
or else Present (Next (Class))
then
Bad_Mechanism;
end if;
elsif Nkind (Mech_Name) = N_Function_Call then
Param := First (Parameter_Associations (Mech_Name));
if Nkind (Name (Mech_Name)) /= N_Identifier
or else Chars (Name (Mech_Name)) /= Name_Descriptor
or else Present (Next (Param))
or else No (Selector_Name (Param))
or else Chars (Selector_Name (Param)) /= Name_Class
then
Bad_Mechanism;
else
Class := Explicit_Actual_Parameter (Param);
end if;
else
Bad_Mechanism;
end if;
Check_VMS (Mech_Name);
if Nkind (Class) /= N_Identifier then
Bad_Class;
elsif Chars (Class) = Name_UBS then
Set_Mechanism (Ent, By_Descriptor_UBS);
elsif Chars (Class) = Name_UBSB then
Set_Mechanism (Ent, By_Descriptor_UBSB);
elsif Chars (Class) = Name_UBA then
Set_Mechanism (Ent, By_Descriptor_UBA);
elsif Chars (Class) = Name_S then
Set_Mechanism (Ent, By_Descriptor_S);
elsif Chars (Class) = Name_SB then
Set_Mechanism (Ent, By_Descriptor_SB);
elsif Chars (Class) = Name_A then
Set_Mechanism (Ent, By_Descriptor_A);
elsif Chars (Class) = Name_NCA then
Set_Mechanism (Ent, By_Descriptor_NCA);
else
Bad_Class;
end if;
end Set_Mechanism_Value;
procedure Set_Ravenscar_Profile (N : Node_Id) is
begin
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#");
else
Task_Dispatching_Policy := 'F';
if Task_Dispatching_Policy_Sloc /= System_Location then
Task_Dispatching_Policy_Sloc := Loc;
end if;
end if;
if Locking_Policy /= ' '
and then Locking_Policy /= 'C'
then
Error_Msg_Sloc := Locking_Policy_Sloc;
Error_Pragma ("Profile (Ravenscar) incompatible with policy#");
else
Locking_Policy := 'C';
if Locking_Policy_Sloc /= System_Location then
Locking_Policy_Sloc := Loc;
end if;
end if;
Detect_Blocking := True;
Set_Profile_Restrictions (Ravenscar, N, Warn => False);
end Set_Ravenscar_Profile;
begin
if not Is_Pragma_Name (Chars (N)) then
if Warn_On_Unrecognized_Pragma then
Error_Pragma ("unrecognized pragma%!?");
else
raise Pragma_Exit;
end if;
else
Prag_Id := Get_Pragma_Id (Chars (N));
end if;
Arg1 := Empty;
Arg2 := Empty;
Arg3 := Empty;
Arg4 := Empty;
if Present (Pragma_Argument_Associations (N)) then
Arg1 := First (Pragma_Argument_Associations (N));
if Present (Arg1) then
Arg2 := Next (Arg1);
if Present (Arg2) then
Arg3 := Next (Arg2);
if Present (Arg3) then
Arg4 := Next (Arg3);
end if;
end if;
end if;
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);
end loop;
end;
case Prag_Id is
when Pragma_Abort_Defer =>
GNAT_Pragma;
Check_Arg_Count (0);
if Nkind (Parent (N)) /= N_Handled_Sequence_Of_Statements
or else N /= First (Statements (Parent (N)))
then
Pragma_Misplaced;
end if;
when Pragma_Ada_83 =>
GNAT_Pragma;
Ada_Version := Ada_83;
Check_Arg_Count (0);
when Pragma_Ada_95 =>
GNAT_Pragma;
Ada_Version := Ada_95;
Check_Arg_Count (0);
when Pragma_Ada_05 => declare
E_Id : Node_Id;
begin
GNAT_Pragma;
if Arg_Count = 1 then
Check_Arg_Is_Local_Name (Arg1);
E_Id := Expression (Arg1);
if Etype (E_Id) = Any_Type then
return;
end if;
Set_Is_Ada_2005 (Entity (E_Id));
else
Ada_Version := Ada_05;
Check_Arg_Count (0);
end if;
end;
when Pragma_All_Calls_Remote => All_Calls_Remote : declare
Lib_Entity : Entity_Id;
begin
Check_Ada_83_Warning;
Check_Valid_Library_Unit_Pragma;
if Nkind (N) = N_Null_Statement then
return;
end if;
Lib_Entity := Find_Lib_Unit_Name;
if Present (Lib_Entity)
and then not Debug_Flag_U
then
if not Is_Remote_Call_Interface (Lib_Entity) then
Error_Pragma ("pragma% only apply to rci unit");
else
Set_Has_All_Calls_Remote (Lib_Entity);
end if;
end if;
end All_Calls_Remote;
when Pragma_Annotate => Annotate : begin
GNAT_Pragma;
Check_At_Least_N_Arguments (1);
Check_Arg_Is_Identifier (Arg1);
declare
Arg : Node_Id := Arg2;
Exp : Node_Id;
begin
while Present (Arg) loop
Exp := Expression (Arg);
Analyze (Exp);
if Is_Entity_Name (Exp) then
null;
elsif Nkind (Exp) = N_String_Literal then
Resolve (Exp, Standard_String);
elsif Is_Overloaded (Exp) then
Error_Pragma_Arg ("ambiguous argument for pragma%", Exp);
else
Resolve (Exp);
end if;
Next (Arg);
end loop;
end;
end Annotate;
when Pragma_Assert =>
GNAT_Pragma;
Check_No_Identifiers;
if Arg_Count > 1 then
Check_Arg_Count (2);
Check_Arg_Is_Static_Expression (Arg2, Standard_String);
end if;
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)),
Then_Statements => New_List (
Make_Null_Statement (Loc))));
Analyze (N);
else
Analyze_And_Resolve (Expression (Arg1), Any_Boolean);
end if;
when Pragma_AST_Entry => AST_Entry : declare
Ent : Node_Id;
begin
GNAT_Pragma;
Check_VMS (N);
Check_Arg_Count (1);
Check_No_Identifiers;
Check_Arg_Is_Local_Name (Arg1);
Ent := Entity (Expression (Arg1));
if Ekind (Ent) /= E_Entry then
Error_Pragma_Arg
("pragma% argument must be simple entry name", Arg1);
elsif Is_AST_Entry (Ent) then
Error_Pragma_Arg
("duplicate % pragma for entry", Arg1);
elsif Has_Homonym (Ent) then
Error_Pragma_Arg
("pragma% argument cannot specify overloaded entry", Arg1);
else
declare
FF : constant Entity_Id := First_Formal (Ent);
begin
if Present (FF) then
if Present (Next_Formal (FF)) then
Error_Pragma_Arg
("entry for pragma% can have only one argument",
Arg1);
elsif Parameter_Mode (FF) /= E_In_Parameter then
Error_Pragma_Arg
("entry parameter for pragma% must have mode IN",
Arg1);
end if;
end if;
end;
Set_Is_AST_Entry (Ent);
end if;
end AST_Entry;
when Pragma_Asynchronous => Asynchronous : declare
Nm : Entity_Id;
C_Ent : Entity_Id;
L : List_Id;
S : Node_Id;
N : Node_Id;
Formal : Entity_Id;
procedure Process_Async_Pragma;
procedure Process_Async_Pragma is
begin
if not Present (L) then
Set_Is_Asynchronous (Nm);
return;
end if;
S := First (L);
while Present (S) loop
Formal := Defining_Identifier (S);
if Nkind (Formal) = N_Defining_Identifier
and then Ekind (Formal) /= E_In_Parameter
then
Error_Pragma_Arg
("pragma% procedure can only have IN parameter",
Arg1);
end if;
Next (S);
end loop;
Set_Is_Asynchronous (Nm);
end Process_Async_Pragma;
begin
Check_Ada_83_Warning;
Check_No_Identifiers;
Check_Arg_Count (1);
Check_Arg_Is_Local_Name (Arg1);
if Debug_Flag_U then
return;
end if;
C_Ent := Cunit_Entity (Current_Sem_Unit);
Analyze (Expression (Arg1));
Nm := Entity (Expression (Arg1));
if not Is_Remote_Call_Interface (C_Ent)
and then not Is_Remote_Types (C_Ent)
then
Error_Pragma
("pragma% not in Remote_Call_Interface or " &
"Remote_Types unit");
end if;
if Ekind (Nm) = E_Procedure
and then Nkind (Parent (Nm)) = N_Procedure_Specification
then
if not Is_Remote_Call_Interface (Nm) then
Error_Pragma_Arg
("pragma% cannot be applied on non-remote procedure",
Arg1);
end if;
L := Parameter_Specifications (Parent (Nm));
Process_Async_Pragma;
return;
elsif Ekind (Nm) = E_Function then
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));
if Nkind (N) = N_Full_Type_Declaration
and then Nkind (Type_Definition (N)) =
N_Access_Procedure_Definition
then
L := Parameter_Specifications (Type_Definition (N));
Process_Async_Pragma;
if Is_Asynchronous (Nm)
and then Expander_Active
then
RACW_Type_Is_Asynchronous (
Underlying_RACW_Type (Nm));
end if;
else
Error_Pragma_Arg
("pragma% cannot reference access-to-function type",
Arg1);
end if;
elsif Is_Access_Type (Nm)
and then Is_Class_Wide_Type (Designated_Type (Nm))
then
Check_First_Subtype (Arg1);
Set_Is_Asynchronous (Nm);
if Expander_Active then
RACW_Type_Is_Asynchronous (Nm);
end if;
else
Error_Pragma_Arg ("inappropriate argument for pragma%", Arg1);
end if;
end Asynchronous;
when Pragma_Atomic =>
Process_Atomic_Shared_Volatile;
when Pragma_Atomic_Components |
Pragma_Volatile_Components =>
Atomic_Components : declare
E_Id : Node_Id;
E : Entity_Id;
D : Node_Id;
K : Node_Kind;
begin
Check_Ada_83_Warning;
Check_No_Identifiers;
Check_Arg_Count (1);
Check_Arg_Is_Local_Name (Arg1);
E_Id := Expression (Arg1);
if Etype (E_Id) = Any_Type then
return;
end if;
E := Entity (E_Id);
if Rep_Item_Too_Early (E, N)
or else
Rep_Item_Too_Late (E, N)
then
return;
end if;
D := Declaration_Node (E);
K := Nkind (D);
if (K = N_Full_Type_Declaration and then Is_Array_Type (E))
or else
((Ekind (E) = E_Constant or else Ekind (E) = E_Variable)
and then Nkind (D) = N_Object_Declaration
and then Nkind (Object_Definition (D)) =
N_Constrained_Array_Definition)
then
if Nkind (D) /= N_Object_Declaration then
E := Base_Type (E);
end if;
Set_Has_Volatile_Components (E);
if Prag_Id = Pragma_Atomic_Components then
Set_Has_Atomic_Components (E);
if Is_Packed (E) then
Set_Is_Packed (E, False);
Error_Pragma_Arg
("?Pack canceled, cannot pack atomic components",
Arg1);
end if;
end if;
else
Error_Pragma_Arg ("inappropriate entity for pragma%", Arg1);
end if;
end Atomic_Components;
when Pragma_Attach_Handler =>
Check_Ada_83_Warning;
Check_No_Identifiers;
Check_Arg_Count (2);
if No_Run_Time_Mode then
Error_Msg_CRT ("Attach_Handler pragma", N);
else
Check_Interrupt_Or_Attach_Handler;
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;
when Pragma_C_Pass_By_Copy => C_Pass_By_Copy : declare
Arg : Node_Id;
Val : Uint;
begin
GNAT_Pragma;
Check_Valid_Configuration_Pragma;
Check_Arg_Count (1);
Check_Optional_Identifier (Arg1, "max_size");
Arg := Expression (Arg1);
Check_Arg_Is_Static_Expression (Arg, Any_Integer);
Val := Expr_Value (Arg);
if Val <= 0 then
Error_Pragma_Arg
("maximum size for pragma% must be positive", Arg1);
elsif UI_Is_In_Int_Range (Val) then
Default_C_Record_Mechanism := UI_To_Int (Val);
else
Default_C_Record_Mechanism := Mechanism_Type'Last;
end if;
end C_Pass_By_Copy;
when Pragma_Compile_Time_Warning => Compile_Time_Warning : declare
Arg1x : constant Node_Id := Get_Pragma_Arg (Arg1);
begin
GNAT_Pragma;
Check_Arg_Count (2);
Check_No_Identifiers;
Check_Arg_Is_Static_Expression (Arg2, Standard_String);
Analyze_And_Resolve (Arg1x, Standard_Boolean);
if Compile_Time_Known_Value (Arg1x) then
if Is_True (Expr_Value (Get_Pragma_Arg (Arg1))) then
String_To_Name_Buffer (Strval (Get_Pragma_Arg (Arg2)));
Add_Char_To_Name_Buffer ('?');
declare
Msg : String (1 .. Name_Len) :=
Name_Buffer (1 .. Name_Len);
B : Natural;
begin
B := 1;
for S in 2 .. Msg'Length - 1 loop
if Msg (S) = ASCII.LF then
Msg (S) := '?';
Error_Msg_N (Msg (B .. S), Arg1);
B := S;
Msg (B) := '\';
end if;
end loop;
Error_Msg_N (Msg (B .. Msg'Length), Arg1);
end;
end if;
end if;
end Compile_Time_Warning;
when Pragma_Complex_Representation => Complex_Representation : declare
E_Id : Entity_Id;
E : Entity_Id;
Ent : Entity_Id;
begin
GNAT_Pragma;
Check_Arg_Count (1);
Check_Optional_Identifier (Arg1, Name_Entity);
Check_Arg_Is_Local_Name (Arg1);
E_Id := Expression (Arg1);
if Etype (E_Id) = Any_Type then
return;
end if;
E := Entity (E_Id);
if not Is_Record_Type (E) then
Error_Pragma_Arg
("argument for pragma% must be record type", Arg1);
end if;
Ent := First_Entity (E);
if No (Ent)
or else No (Next_Entity (Ent))
or else Present (Next_Entity (Next_Entity (Ent)))
or else not Is_Floating_Point_Type (Etype (Ent))
or else Etype (Ent) /= Etype (Next_Entity (Ent))
then
Error_Pragma_Arg
("record for pragma% must have two fields of same fpt type",
Arg1);
else
Set_Has_Complex_Representation (Base_Type (E));
end if;
end Complex_Representation;
when Pragma_Component_Alignment => Component_AlignmentP : declare
Args : Args_List (1 .. 2);
Names : constant Name_List (1 .. 2) := (
Name_Form,
Name_Name);
Form : Node_Id renames Args (1);
Name : Node_Id renames Args (2);
Atype : Component_Alignment_Kind;
Typ : Entity_Id;
begin
GNAT_Pragma;
Gather_Associations (Names, Args);
if No (Form) then
Error_Pragma ("missing Form argument for pragma%");
end if;
Check_Arg_Is_Identifier (Form);
if Chars (Form) = Name_Component_Size then
Atype := Calign_Component_Size;
elsif Chars (Form) = Name_Component_Size_4 then
Atype := Calign_Component_Size_4;
elsif Chars (Form) = Name_Default then
Atype := Calign_Component_Size;
elsif Chars (Form) = Name_Storage_Unit then
Atype := Calign_Storage_Unit;
else
Error_Pragma_Arg
("invalid Form parameter for pragma%", Form);
end if;
if No (Name) then
Scope_Stack.Table
(Scope_Stack.Last).Component_Alignment_Default := Atype;
else
Check_Arg_Is_Local_Name (Name);
Find_Type (Name);
Typ := Entity (Name);
if Typ = Any_Type
or else Rep_Item_Too_Early (Typ, N)
then
return;
else
Typ := Underlying_Type (Typ);
end if;
if not Is_Record_Type (Typ)
and then not Is_Array_Type (Typ)
then
Error_Pragma_Arg
("Name parameter of pragma% must identify record or " &
"array type", Name);
end if;
if not Has_Pragma_Pack (Base_Type (Typ)) then
Set_Is_Packed (Base_Type (Typ), False);
Set_Component_Alignment (Base_Type (Typ), Atype);
end if;
end if;
end Component_AlignmentP;
when Pragma_Controlled => Controlled : declare
Arg : Node_Id;
begin
Check_No_Identifiers;
Check_Arg_Count (1);
Check_Arg_Is_Local_Name (Arg1);
Arg := Expression (Arg1);
if not Is_Entity_Name (Arg)
or else not Is_Access_Type (Entity (Arg))
then
Error_Pragma_Arg ("pragma% requires access type", Arg1);
else
Set_Has_Pragma_Controlled (Base_Type (Entity (Arg)));
end if;
end Controlled;
when Pragma_Convention => Convention : declare
C : Convention_Id;
E : Entity_Id;
begin
Check_Ada_83_Warning;
Check_Arg_Count (2);
Process_Convention (C, E);
end Convention;
when Pragma_Convention_Identifier => Convention_Identifier : declare
Idnam : Name_Id;
Cname : Name_Id;
begin
GNAT_Pragma;
Check_Arg_Count (2);
Check_Optional_Identifier (Arg1, Name_Name);
Check_Optional_Identifier (Arg2, Name_Convention);
Check_Arg_Is_Identifier (Arg1);
Check_Arg_Is_Identifier (Arg1);
Idnam := Chars (Expression (Arg1));
Cname := Chars (Expression (Arg2));
if Is_Convention_Name (Cname) then
Record_Convention_Identifier
(Idnam, Get_Convention_Id (Cname));
else
Error_Pragma_Arg
("second arg for % pragma must be convention", Arg2);
end if;
end Convention_Identifier;
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;
begin
GNAT_Pragma;
Check_Arg_Count (1);
Check_Optional_Identifier (Arg1, Name_Entity);
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 not Is_Type (Entity (Arg))
then
Error_Pragma_Arg ("pragma% requires a type mark", Arg1);
end if;
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;
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;
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);
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);
Set_Kill_Tag_Checks (Typ);
Set_Kill_Tag_Checks (Class_Wide_Type (Typ));
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));
else
while Next_Entity (C) /= Tag_C loop
Next_Entity (C);
end loop;
Set_Next_Entity (C, Next_Entity (Tag_C));
end if;
end if;
end if;
end CPP_Class;
when Pragma_CPP_Constructor => CPP_Constructor : declare
Id : Entity_Id;
Def_Id : Entity_Id;
begin
GNAT_Pragma;
Check_Arg_Count (1);
Check_Optional_Identifier (Arg1, Name_Entity);
Check_Arg_Is_Local_Name (Arg1);
Id := Expression (Arg1);
Find_Program_Unit_Name (Id);
if Etype (Id) = Any_Type then
return;
end if;
Def_Id := Entity (Id);
if Ekind (Def_Id) = E_Function
and then Is_Class_Wide_Type (Etype (Def_Id))
and then Is_CPP_Class (Etype (Etype (Def_Id)))
then
if Arg_Count >= 2 then
Check_At_Most_N_Arguments (3);
Process_Interface_Name (Def_Id, Arg2, Arg3);
end if;
if No (Parameter_Specifications (Parent (Def_Id))) then
Set_Has_Completion (Def_Id);
Set_Is_Constructor (Def_Id);
else
Error_Pragma_Arg
("non-default constructors not implemented", Arg1);
end if;
else
Error_Pragma_Arg
("pragma% requires function returning a 'C'P'P_Class type",
Arg1);
end if;
end CPP_Constructor;
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");
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);
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 Arg_Count = 1 then
Set_DTC_Entity (Subp, Tag_Component (Typ));
return;
end if;
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;
Arg := Expression (Arg3);
Analyze_And_Resolve (Arg, Any_Integer);
if not Is_Static_Expression (Arg) then
Flag_Non_Static_Expr
("third argument of pragma CPP_Virtual must be static!",
Arg3);
raise Pragma_Exit;
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;
end if;
end CPP_Virtual;
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);
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;
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;
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);
end if;
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;
Arg := Expression (Arg3);
Analyze_And_Resolve (Arg, Any_Integer);
if not Is_Static_Expression (Arg) then
Flag_Non_Static_Expr
("entry count for pragma CPP_Vtable must be a static " &
"expression!", Arg3);
raise Pragma_Exit;
else
V := Expr_Value (Expression (Arg3));
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;
end CPP_Vtable;
when Pragma_Debug => Debug : begin
GNAT_Pragma;
Rewrite (N, Make_Implicit_If_Statement (N,
Condition => New_Occurrence_Of (Boolean_Literals (
Assertions_Enabled and Expander_Active), Loc),
Then_Statements => New_List (
Relocate_Node (Debug_Statement (N)))));
Analyze (N);
end Debug;
when Pragma_Detect_Blocking =>
GNAT_Pragma;
Check_Arg_Count (0);
Check_Valid_Configuration_Pragma;
Detect_Blocking := True;
when Pragma_Discard_Names => Discard_Names : declare
E_Id : Entity_Id;
E : Entity_Id;
begin
Check_Ada_83_Warning;
if Arg_Count = 0 and then Is_Configuration_Pragma then
Global_Discard_Names := True;
return;
else
Check_Is_In_Decl_Part_Or_Package_Spec;
if Arg_Count = 0 then
Set_Discard_Names (Current_Scope);
return;
else
Check_Arg_Count (1);
Check_Optional_Identifier (Arg1, Name_On);
Check_Arg_Is_Local_Name (Arg1);
E_Id := Expression (Arg1);
if Etype (E_Id) = Any_Type then
return;
else
E := Entity (E_Id);
end if;
if (Is_First_Subtype (E)
and then (Is_Enumeration_Type (E)
or else Is_Tagged_Type (E)))
or else Ekind (E) = E_Exception
then
Set_Discard_Names (E);
else
Error_Pragma_Arg
("inappropriate entity for pragma%", Arg1);
end if;
end if;
end if;
end Discard_Names;
when Pragma_Elaborate => Elaborate : declare
Plist : List_Id;
Parent_Node : Node_Id;
Arg : Node_Id;
Citem : Node_Id;
begin
if not Is_List_Member (N) 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;
if Arg_Count = 0 then
Error_Pragma ("pragma% requires at least one argument");
end if;
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
and then Implicit_With (Citem))
then
null;
else
Error_Pragma
("(Ada 83) pragma% must be at end of context clause");
end if;
Next (Citem);
end loop;
end if;
Arg := Arg1;
Outer : while Present (Arg) loop
Citem := First (Plist);
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));
if In_Extended_Main_Source_Unit (N) then
Set_Suppress_Elaboration_Warnings
(Entity (Name (Citem)));
end if;
exit Inner;
end if;
Next (Citem);
end loop Inner;
if Citem = N then
Error_Pragma_Arg
("argument of pragma% is not with'ed unit", Arg);
end if;
Next (Arg);
end loop Outer;
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;
when Pragma_Elaborate_All => Elaborate_All : declare
Plist : List_Id;
Parent_Node : Node_Id;
Arg : Node_Id;
Citem : Node_Id;
begin
Check_Ada_83_Warning;
if not Is_List_Member (N) 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;
if Arg_Count = 0 then
Error_Pragma ("pragma% requires at least one argument");
end if;
Arg := Arg1;
Outr : while Present (Arg) loop
Citem := First (Plist);
Innr : while Citem /= N loop
if Nkind (Citem) = N_With_Clause
and then Same_Name (Name (Citem), Expression (Arg))
then
Set_Elaborate_All_Present (Citem, True);
Set_Unit_Name (Expression (Arg), Name (Citem));
if In_Extended_Main_Source_Unit (N) then
Set_Suppress_Elaboration_Warnings
(Entity (Name (Citem)));
end if;
exit Innr;
end if;
Next (Citem);
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;
Next (Arg);
end loop Outr;
end Elaborate_All;
when Pragma_Elaborate_Body => Elaborate_Body : declare
Cunit_Node : Node_Id;
Cunit_Ent : Entity_Id;
begin
Check_Ada_83_Warning;
Check_Valid_Library_Unit_Pragma;
if Nkind (N) = N_Null_Statement then
return;
end if;
Cunit_Node := Cunit (Current_Sem_Unit);
Cunit_Ent := Cunit_Entity (Current_Sem_Unit);
if Nkind (Unit (Cunit_Node)) = N_Package_Body
or else
Nkind (Unit (Cunit_Node)) = N_Subprogram_Body
then
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);
if Dynamic_Elaboration_Checks or Debug_Flag_DD then
Set_Suppress_Elaboration_Warnings (Cunit_Ent);
end if;
end if;
end Elaborate_Body;
when Pragma_Elaboration_Checks =>
GNAT_Pragma;
Check_Arg_Count (1);
Check_Arg_Is_One_Of (Arg1, Name_Static, Name_Dynamic);
Dynamic_Elaboration_Checks :=
(Chars (Get_Pragma_Arg (Arg1)) = Name_Dynamic);
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_Valid_Configuration_Pragma;
Gather_Associations (Names, Args);
if No (Unit_Name) then
Error_Pragma ("missing Unit_Name argument for pragma%");
end if;
if No (Entity)
and then (Present (Parameter_Types)
or else
Present (Result_Type)
or else
Present (Source_Location))
then
Error_Pragma ("missing Entity argument for pragma%");
end if;
if (Present (Parameter_Types)
or else
Present (Result_Type))
and then
Present (Source_Location)
then
Error_Pragma
("parameter profile and source location can not " &
"be used together in pragma%");
end if;
Process_Eliminate_Pragma
(N,
Unit_Name,
Entity,
Parameter_Types,
Result_Type,
Source_Location);
end Eliminate;
when Pragma_Explicit_Overriding =>
Check_Valid_Configuration_Pragma;
Check_Arg_Count (0);
Explicit_Overriding := True;
when Pragma_Export => Export : declare
C : Convention_Id;
Def_Id : Entity_Id;
begin
Check_Ada_83_Warning;
Check_At_Least_N_Arguments (2);
Check_At_Most_N_Arguments (4);
Process_Convention (C, Def_Id);
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 : constant Name_List (1 .. 4) := (
Name_Internal,
Name_External,
Name_Form,
Name_Code);
Internal : Node_Id renames Args (1);
External : Node_Id renames Args (2);
Form : Node_Id renames Args (3);
Code : Node_Id renames Args (4);
begin
if Inside_A_Generic then
Error_Pragma ("pragma% cannot be used for generic entities");
end if;
Gather_Associations (Names, Args);
Process_Extended_Import_Export_Exception_Pragma (
Arg_Internal => Internal,
Arg_External => External,
Arg_Form => Form,
Arg_Code => Code);
if not Is_VMS_Exception (Entity (Internal)) then
Set_Exported (Entity (Internal), Internal);
end if;
end Export_Exception;
when Pragma_Export_Function => Export_Function : declare
Args : Args_List (1 .. 6);
Names : constant Name_List (1 .. 6) := (
Name_Internal,
Name_External,
Name_Parameter_Types,
Name_Result_Type,
Name_Mechanism,
Name_Result_Mechanism);
Internal : Node_Id renames Args (1);
External : Node_Id renames Args (2);
Parameter_Types : Node_Id renames Args (3);
Result_Type : Node_Id renames Args (4);
Mechanism : Node_Id renames Args (5);
Result_Mechanism : Node_Id renames Args (6);
begin
GNAT_Pragma;
Gather_Associations (Names, Args);
Process_Extended_Import_Export_Subprogram_Pragma (
Arg_Internal => Internal,
Arg_External => External,
Arg_Parameter_Types => Parameter_Types,
Arg_Result_Type => Result_Type,
Arg_Mechanism => Mechanism,
Arg_Result_Mechanism => Result_Mechanism);
end Export_Function;
when Pragma_Export_Object => Export_Object : declare
Args : Args_List (1 .. 3);
Names : constant Name_List (1 .. 3) := (
Name_Internal,
Name_External,
Name_Size);
Internal : Node_Id renames Args (1);
External : Node_Id renames Args (2);
Size : Node_Id renames Args (3);
begin
GNAT_Pragma;
Gather_Associations (Names, Args);
Process_Extended_Import_Export_Object_Pragma (
Arg_Internal => Internal,
Arg_External => External,
Arg_Size => Size);
end Export_Object;
when Pragma_Export_Procedure => Export_Procedure : declare
Args : Args_List (1 .. 4);
Names : constant Name_List (1 .. 4) := (
Name_Internal,
Name_External,
Name_Parameter_Types,
Name_Mechanism);
Internal : Node_Id renames Args (1);
External : Node_Id renames Args (2);
Parameter_Types : Node_Id renames Args (3);
Mechanism : Node_Id renames Args (4);
begin
GNAT_Pragma;
Gather_Associations (Names, Args);
Process_Extended_Import_Export_Subprogram_Pragma (
Arg_Internal => Internal,
Arg_External => External,
Arg_Parameter_Types => Parameter_Types,
Arg_Mechanism => Mechanism);
end Export_Procedure;
when Pragma_Export_Value =>
GNAT_Pragma;
Check_Arg_Count (2);
Check_Optional_Identifier (Arg1, Name_Value);
Check_Arg_Is_Static_Expression (Arg1, Any_Integer);
Check_Optional_Identifier (Arg2, Name_Link_Name);
Check_Arg_Is_Static_Expression (Arg2, Standard_String);
when Pragma_Export_Valued_Procedure =>
Export_Valued_Procedure : declare
Args : Args_List (1 .. 4);
Names : constant Name_List (1 .. 4) := (
Name_Internal,
Name_External,
Name_Parameter_Types,
Name_Mechanism);
Internal : Node_Id renames Args (1);
External : Node_Id renames Args (2);
Parameter_Types : Node_Id renames Args (3);
Mechanism : Node_Id renames Args (4);
begin
GNAT_Pragma;
Gather_Associations (Names, Args);
Process_Extended_Import_Export_Subprogram_Pragma (
Arg_Internal => Internal,
Arg_External => External,
Arg_Parameter_Types => Parameter_Types,
Arg_Mechanism => Mechanism);
end Export_Valued_Procedure;
when Pragma_Extend_System => Extend_System : declare
begin
GNAT_Pragma;
Check_Valid_Configuration_Pragma;
Check_Arg_Count (1);
Check_Optional_Identifier (Arg1, Name_Name);
Check_Arg_Is_Identifier (Arg1);
Get_Name_String (Chars (Expression (Arg1)));
if Name_Len > 4
and then Name_Buffer (1 .. 4) = "aux_"
then
if Present (System_Extend_Pragma_Arg) then
if Chars (Expression (Arg1)) =
Chars (Expression (System_Extend_Pragma_Arg))
then
null;
else
Error_Msg_Sloc := Sloc (System_Extend_Pragma_Arg);
Error_Pragma ("pragma% conflicts with that at#");
end if;
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");
end if;
end Extend_System;
when Pragma_Extensions_Allowed =>
GNAT_Pragma;
Check_Arg_Count (1);
Check_No_Identifiers;
Check_Arg_Is_One_Of (Arg1, Name_On, Name_Off);
if Chars (Expression (Arg1)) = Name_On then
Extensions_Allowed := True;
Ada_Version := Ada_Version_Type'Last;
else
Extensions_Allowed := False;
Ada_Version := Ada_Version_Type'Min (Ada_Version, Ada_95);
end if;
when Pragma_External => External : declare
C : Convention_Id;
Def_Id : Entity_Id;
begin
GNAT_Pragma;
Check_At_Least_N_Arguments (2);
Check_At_Most_N_Arguments (4);
Process_Convention (C, Def_Id);
Note_Possible_Modification (Expression (Arg2));
Process_Interface_Name (Def_Id, Arg3, Arg4);
Set_Exported (Def_Id, Arg2);
end External;
when Pragma_External_Name_Casing => External_Name_Casing : declare
begin
GNAT_Pragma;
Check_No_Identifiers;
if Arg_Count = 2 then
Check_Arg_Is_One_Of
(Arg2, Name_As_Is, Name_Uppercase, Name_Lowercase);
case Chars (Get_Pragma_Arg (Arg2)) is
when Name_As_Is =>
Opt.External_Name_Exp_Casing := As_Is;
when Name_Uppercase =>
Opt.External_Name_Exp_Casing := Uppercase;
when Name_Lowercase =>
Opt.External_Name_Exp_Casing := Lowercase;
when others =>
null;
end case;
else
Check_Arg_Count (1);
end if;
Check_Arg_Is_One_Of (Arg1, Name_Uppercase, Name_Lowercase);
case Chars (Get_Pragma_Arg (Arg1)) is
when Name_Uppercase =>
Opt.External_Name_Imp_Casing := Uppercase;
when Name_Lowercase =>
Opt.External_Name_Imp_Casing := Lowercase;
when others =>
null;
end case;
end External_Name_Casing;
when Pragma_Finalize_Storage_Only => Finalize_Storage : declare
Assoc : constant Node_Id := Arg1;
Type_Id : constant Node_Id := Expression (Assoc);
Typ : Entity_Id;
begin
Check_No_Identifiers;
Check_Arg_Count (1);
Check_Arg_Is_Local_Name (Arg1);
Find_Type (Type_Id);
Typ := Entity (Type_Id);
if Typ = Any_Type
or else Rep_Item_Too_Early (Typ, N)
then
return;
else
Typ := Underlying_Type (Typ);
end if;
if not Is_Controlled (Typ) then
Error_Pragma ("pragma% must specify controlled type");
end if;
Check_First_Subtype (Arg1);
if Finalize_Storage_Only (Typ) then
Error_Pragma ("duplicate pragma%, only one allowed");
elsif not Rep_Item_Too_Late (Typ, N) then
Set_Finalize_Storage_Only (Base_Type (Typ), True);
end if;
end Finalize_Storage;
when Pragma_Float_Representation => Float_Representation : declare
Argx : Node_Id;
Digs : Nat;
Ent : Entity_Id;
begin
GNAT_Pragma;
if Arg_Count = 1 then
Check_Valid_Configuration_Pragma;
else
Check_Arg_Count (2);
Check_Optional_Identifier (Arg2, Name_Entity);
Check_Arg_Is_Local_Name (Arg2);
end if;
Check_No_Identifier (Arg1);
Check_Arg_Is_One_Of (Arg1, Name_VAX_Float, Name_IEEE_Float);
if not OpenVMS_On_Target then
if Chars (Expression (Arg1)) = Name_VAX_Float then
Error_Pragma
("?pragma% ignored (applies only to Open'V'M'S)");
end if;
return;
end if;
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;
Opt.Float_Format := 'V';
else
if Opt.Float_Format = 'V' then
Error_Pragma ("'V'A'X format previously specified");
end if;
Opt.Float_Format := 'I';
end if;
Set_Standard_Fpt_Formats;
else
Argx := Get_Pragma_Arg (Arg2);
if not Is_Entity_Name (Argx)
or else not Is_Floating_Point_Type (Entity (Argx))
then
Error_Pragma_Arg
("second argument of% pragma must be floating-point type",
Arg2);
end if;
Ent := Entity (Argx);
Digs := UI_To_Int (Digits_Value (Ent));
if Chars (Expression (Arg1)) = Name_VAX_Float then
case Digs is
when 6 => Set_F_Float (Ent);
when 9 => Set_D_Float (Ent);
when 15 => Set_G_Float (Ent);
when others =>
Error_Pragma_Arg
("wrong digits value, must be 6,9 or 15", Arg2);
end case;
else
case Digs is
when 6 => Set_IEEE_Short (Ent);
when 15 => Set_IEEE_Long (Ent);
when others =>
Error_Pragma_Arg
("wrong digits value, must be 6 or 15", Arg2);
end case;
end if;
end if;
end Float_Representation;
when Pragma_Ident | Pragma_Comment => Ident : declare
Str : Node_Id;
begin
GNAT_Pragma;
Check_Arg_Count (1);
Check_No_Identifiers;
Check_Arg_Is_Static_Expression (Arg1, Standard_String);
if Prag_Id = Pragma_Ident then
Check_Is_In_Decl_Part_Or_Package_Spec;
end if;
Str := Expr_Value_S (Expression (Arg1));
declare
CS : Node_Id;
GP : Node_Id;
begin
GP := Parent (Parent (N));
if Nkind (GP) = N_Package_Declaration
or else
Nkind (GP) = N_Generic_Package_Declaration
then
GP := Parent (GP);
end if;
if Nkind (GP) = N_Compilation_Unit then
CS := Ident_String (Current_Sem_Unit);
if Present (CS) then
if Prag_Id = Pragma_Ident then
Error_Pragma ("duplicate% pragma not permitted");
elsif not ASIS_Mode then
Start_String (Strval (CS));
Store_String_Char (' ');
Store_String_Chars (Strval (Str));
Set_Strval (CS, End_String);
end if;
else
if OpenVMS_On_Target then
Start_String;
Store_String_Chars
("--for-linker=IDENTIFICATION=");
String_To_Name_Buffer (Strval (Str));
Store_String_Chars (Name_Buffer (1 .. Name_Len));
Replace_Linker_Option_String
(End_String, "--for-linker=IDENTIFICATION=");
end if;
Set_Ident_String (Current_Sem_Unit, Str);
end if;
elsif Nkind (GP) = N_Subunit then
null;
elsif Prag_Id = Pragma_Ident then
if Instantiation_Location (Loc) = No_Location then
Error_Pragma ("pragma% only allowed at outer level");
end if;
end if;
end;
end Ident;
when Pragma_Import =>
Check_Ada_83_Warning;
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 : constant Name_List (1 .. 4) := (
Name_Internal,
Name_External,
Name_Form,
Name_Code);
Internal : Node_Id renames Args (1);
External : Node_Id renames Args (2);
Form : Node_Id renames Args (3);
Code : Node_Id renames Args (4);
begin
Gather_Associations (Names, Args);
if Present (External) and then Present (Code) then
Error_Pragma
("cannot give both External and Code options for pragma%");
end if;
Process_Extended_Import_Export_Exception_Pragma (
Arg_Internal => Internal,
Arg_External => External,
Arg_Form => Form,
Arg_Code => Code);
if not Is_VMS_Exception (Entity (Internal)) then
Set_Imported (Entity (Internal));
end if;
end Import_Exception;
when Pragma_Import_Function => Import_Function : declare
Args : Args_List (1 .. 7);
Names : constant Name_List (1 .. 7) := (
Name_Internal,
Name_External,
Name_Parameter_Types,
Name_Result_Type,
Name_Mechanism,
Name_Result_Mechanism,
Name_First_Optional_Parameter);
Internal : Node_Id renames Args (1);
External : Node_Id renames Args (2);
Parameter_Types : Node_Id renames Args (3);
Result_Type : Node_Id renames Args (4);
Mechanism : Node_Id renames Args (5);
Result_Mechanism : Node_Id renames Args (6);
First_Optional_Parameter : Node_Id renames Args (7);
begin
GNAT_Pragma;
Gather_Associations (Names, Args);
Process_Extended_Import_Export_Subprogram_Pragma (
Arg_Internal => Internal,
Arg_External => External,
Arg_Parameter_Types => Parameter_Types,
Arg_Result_Type => Result_Type,
Arg_Mechanism => Mechanism,
Arg_Result_Mechanism => Result_Mechanism,
Arg_First_Optional_Parameter => First_Optional_Parameter);
end Import_Function;
when Pragma_Import_Object => Import_Object : declare
Args : Args_List (1 .. 3);
Names : constant Name_List (1 .. 3) := (
Name_Internal,
Name_External,
Name_Size);
Internal : Node_Id renames Args (1);
External : Node_Id renames Args (2);
Size : Node_Id renames Args (3);
begin
GNAT_Pragma;
Gather_Associations (Names, Args);
Process_Extended_Import_Export_Object_Pragma (
Arg_Internal => Internal,
Arg_External => External,
Arg_Size => Size);
end Import_Object;
when Pragma_Import_Procedure => Import_Procedure : declare
Args : Args_List (1 .. 5);
Names : constant Name_List (1 .. 5) := (
Name_Internal,
Name_External,
Name_Parameter_Types,
Name_Mechanism,
Name_First_Optional_Parameter);
Internal : Node_Id renames Args (1);
External : Node_Id renames Args (2);
Parameter_Types : Node_Id renames Args (3);
Mechanism : Node_Id renames Args (4);
First_Optional_Parameter : Node_Id renames Args (5);
begin
GNAT_Pragma;
Gather_Associations (Names, Args);
Process_Extended_Import_Export_Subprogram_Pragma (
Arg_Internal => Internal,
Arg_External => External,
Arg_Parameter_Types => Parameter_Types,
Arg_Mechanism => Mechanism,
Arg_First_Optional_Parameter => First_Optional_Parameter);
end Import_Procedure;
when Pragma_Import_Valued_Procedure =>
Import_Valued_Procedure : declare
Args : Args_List (1 .. 5);
Names : constant Name_List (1 .. 5) := (
Name_Internal,
Name_External,
Name_Parameter_Types,
Name_Mechanism,
Name_First_Optional_Parameter);
Internal : Node_Id renames Args (1);
External : Node_Id renames Args (2);
Parameter_Types : Node_Id renames Args (3);
Mechanism : Node_Id renames Args (4);
First_Optional_Parameter : Node_Id renames Args (5);
begin
GNAT_Pragma;
Gather_Associations (Names, Args);
Process_Extended_Import_Export_Subprogram_Pragma (
Arg_Internal => Internal,
Arg_External => External,
Arg_Parameter_Types => Parameter_Types,
Arg_Mechanism => Mechanism,
Arg_First_Optional_Parameter => First_Optional_Parameter);
end Import_Valued_Procedure;
when Pragma_Initialize_Scalars =>
GNAT_Pragma;
Check_Arg_Count (0);
Check_Valid_Configuration_Pragma;
Check_Restriction (No_Initialize_Scalars, N);
if not Restriction_Active (No_Initialize_Scalars) then
Init_Or_Norm_Scalars := True;
Initialize_Scalars := True;
end if;
when Pragma_Inline =>
Process_Inline (Inline_Active);
when Pragma_Inline_Always =>
Process_Inline (True);
when Pragma_Inline_Generic =>
Process_Generic_List;
when Pragma_Inspection_Point => Inspection_Point : declare
Arg : Node_Id;
Exp : Node_Id;
begin
if Arg_Count > 0 then
Arg := Arg1;
loop
Exp := Expression (Arg);
Analyze (Exp);
if not Is_Entity_Name (Exp)
or else not Is_Object (Entity (Exp))
then
Error_Pragma_Arg ("object name required", Arg);
end if;
Next (Arg);
exit when No (Arg);
end loop;
end if;
end Inspection_Point;
when Pragma_Interface =>
GNAT_Pragma;
Check_Arg_Count (2);
Check_No_Identifiers;
Process_Import_Or_Interface;
when Pragma_Interface_Name => Interface_Name : declare
Id : Node_Id;
Def_Id : Entity_Id;
Hom_Id : Entity_Id;
Found : Boolean;
begin
GNAT_Pragma;
Check_At_Least_N_Arguments (2);
Check_At_Most_N_Arguments (3);
Id := Expression (Arg1);
Analyze (Id);
if not Is_Entity_Name (Id) then
Error_Pragma_Arg
("first argument for pragma% must be entity name", Arg1);
elsif Etype (Id) = Any_Type then
return;
else
Def_Id := Entity (Id);
end if;
if Ekind (Def_Id) = E_Variable then
Kill_Size_Check_Code (Def_Id);
Note_Possible_Modification (Id);
if Present (Expression (Parent (Def_Id)))
and then Comes_From_Source (Expression (Parent (Def_Id)))
then
Error_Msg_Sloc := Sloc (Def_Id);
Error_Pragma_Arg
("no initialization allowed for declaration of& #",
Arg2);
else
if Is_Imported (Def_Id)
and then Present (First_Rep_Item (Def_Id))
and then Nkind (First_Rep_Item (Def_Id)) = N_Pragma
and then Chars (First_Rep_Item (Def_Id)) = Name_Interface
then
null;
else
Set_Imported (Def_Id);
end if;
Set_Is_Public (Def_Id);
Process_Interface_Name (Def_Id, Arg2, Arg3);
end if;
elsif not Is_Subprogram (Def_Id) then
Error_Pragma_Arg
("argument of pragma% is not subprogram", Arg1);
else
Check_At_Most_N_Arguments (3);
Hom_Id := Def_Id;
Found := False;
loop
Def_Id := Get_Base_Subprogram (Hom_Id);
if Is_Imported (Def_Id) then
Process_Interface_Name (Def_Id, Arg2, Arg3);
Found := True;
end if;
Hom_Id := Homonym (Hom_Id);
exit when No (Hom_Id)
or else Scope (Hom_Id) /= Current_Scope;
end loop;
if not Found then
Error_Pragma_Arg
("argument of pragma% is not imported subprogram",
Arg1);
end if;
end if;
end Interface_Name;
when Pragma_Interrupt_Handler =>
Check_Ada_83_Warning;
Check_Arg_Count (1);
Check_No_Identifiers;
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;
when Pragma_Interrupt_Priority => Interrupt_Priority : declare
P : constant Node_Id := Parent (N);
Arg : Node_Id;
begin
Check_Ada_83_Warning;
if Arg_Count /= 0 then
Arg := Expression (Arg1);
Check_Arg_Count (1);
Check_No_Identifiers;
Analyze_Per_Use_Expression (Arg, RTE (RE_Interrupt_Priority));
end if;
if Nkind (P) /= N_Task_Definition
and then Nkind (P) /= N_Protected_Definition
then
Pragma_Misplaced;
return;
elsif Has_Priority_Pragma (P) then
Error_Pragma ("duplicate pragma% not allowed");
else
Set_Has_Priority_Pragma (P, True);
Record_Rep_Item (Defining_Identifier (Parent (P)), N);
end if;
end Interrupt_Priority;
when Pragma_Interrupt_State => Interrupt_State : declare
Int_Id : constant Entity_Id := RTE (RE_Interrupt_ID);
State_Type : Character;
IST_Num : Pos;
Int_Val : Uint;
Arg1X : constant Node_Id := Get_Pragma_Arg (Arg1);
Int_Ent : Entity_Id;
begin
GNAT_Pragma;
Check_Arg_Count (2);
Check_Optional_Identifier (Arg1, Name_Name);
Check_Optional_Identifier (Arg2, "state");
Check_Arg_Is_Identifier (Arg2);
if Nkind (Arg1X) = N_Identifier then
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;
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;
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;
IST_Num := Interrupt_States.First;
loop
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;
elsif Int_Val = Interrupt_States.Table (IST_Num).
Interrupt_Number
then
exit when
State_Type = Interrupt_States.Table (IST_Num).
Interrupt_State;
Error_Msg_Sloc :=
Interrupt_States.Table (IST_Num).Pragma_Loc;
Error_Pragma_Arg
("state conflicts with that given at #", Arg2);
exit;
end if;
IST_Num := IST_Num + 1;
end loop;
end Interrupt_State;
when Pragma_Java_Constructor => Java_Constructor : declare
Id : Entity_Id;
Def_Id : Entity_Id;
Hom_Id : Entity_Id;
begin
GNAT_Pragma;
Check_Arg_Count (1);
Check_Optional_Identifier (Arg1, Name_Entity);
Check_Arg_Is_Local_Name (Arg1);
Id := Expression (Arg1);
Find_Program_Unit_Name (Id);
if Etype (Id) = Any_Type then
return;
end if;
Hom_Id := Entity (Id);
loop
Def_Id := Get_Base_Subprogram (Hom_Id);
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)
then
Set_Is_Constructor (Def_Id);
Set_Convention (Def_Id, Convention_Java);
else
Error_Pragma_Arg
("pragma% requires function returning a 'Java access type",
Arg1);
end if;
Hom_Id := Homonym (Hom_Id);
exit when No (Hom_Id) or else Scope (Hom_Id) /= Current_Scope;
end loop;
end Java_Constructor;
when Pragma_Java_Interface => Java_Interface : declare
Arg : Node_Id;
Typ : Entity_Id;
begin
GNAT_Pragma;
Check_Arg_Count (1);
Check_Optional_Identifier (Arg1, Name_Entity);
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 not Is_Type (Entity (Arg))
then
Error_Pragma_Arg ("pragma% requires a type mark", Arg1);
end if;
Typ := Underlying_Type (Entity (Arg));
if not Is_Tagged_Type (Typ) or else not Is_Abstract (Typ) then
Error_Pragma_Arg ("pragma% requires an abstract "
& "tagged type", Arg1);
elsif not Has_Discriminants (Typ)
or else Ekind (Etype (First_Discriminant (Typ)))
/= E_Anonymous_Access_Type
or else
not Is_Class_Wide_Type
(Designated_Type (Etype (First_Discriminant (Typ))))
then
Error_Pragma_Arg
("type must have a class-wide access discriminant", Arg1);
end if;
end Java_Interface;
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;
when Pragma_License =>
GNAT_Pragma;
Check_Arg_Count (1);
Check_No_Identifiers;
Check_Valid_Configuration_Pragma;
Check_Arg_Is_Identifier (Arg1);
declare
Sind : constant Source_File_Index :=
Source_Index (Current_Sem_Unit);
begin
case Chars (Get_Pragma_Arg (Arg1)) is
when Name_GPL =>
Set_License (Sind, GPL);
when Name_Modified_GPL =>
Set_License (Sind, Modified_GPL);
when Name_Restricted =>
Set_License (Sind, Restricted);
when Name_Unrestricted =>
Set_License (Sind, Unrestricted);
when others =>
Error_Pragma_Arg ("invalid license name", Arg1);
end case;
end;
when Pragma_Link_With => Link_With : declare
Arg : Node_Id;
begin
GNAT_Pragma;
if Operating_Mode = Generate_Code
and then In_Extended_Main_Source_Unit (N)
then
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;
Arg := Arg1;
while Present (Arg) loop
Check_Arg_Is_Static_Expression (Arg, Standard_String);
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;
procedure Skip_Spaces;
procedure Skip_Spaces is
begin
while F <= L and then Get_String_Char (S, F) = C loop
F := F + 1;
end loop;
end Skip_Spaces;
begin
Skip_Spaces;
while F <= L loop
if Get_String_Char (S, F) = C then
Skip_Spaces;
exit when F > L;
Store_String_Char (ASCII.NUL);
else
Store_String_Char (Get_String_Char (S, F));
F := F + 1;
end if;
end loop;
end;
Arg := Next (Arg);
if Present (Arg) then
Store_String_Char (ASCII.NUL);
end if;
end loop;
Store_Linker_Option_String (End_String);
end if;
end Link_With;
when Pragma_Linker_Alias =>
GNAT_Pragma;
Check_Arg_Count (2);
Check_Optional_Identifier (Arg1, Name_Entity);
Check_Optional_Identifier (Arg2, "alias");
Check_Arg_Is_Library_Level_Local_Name (Arg1);
Check_Arg_Is_Static_Expression (Arg2, Standard_String);
if Rep_Item_Too_Late (Entity (Expression (Arg1)), N) then
return;
else
Set_Has_Gigi_Rep_Item (Entity (Expression (Arg1)));
end if;
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_Arg_Is_Static_Expression (Arg1, Standard_String);
Start_String (Strval (Expr_Value_S (Expression (Arg1))));
Arg := Arg2;
while Present (Arg) loop
Check_Arg_Is_Static_Expression (Arg, Standard_String);
Store_String_Char (ASCII.NUL);
Store_String_Chars
(Strval (Expr_Value_S (Expression (Arg))));
Arg := Next (Arg);
end loop;
Store_Linker_Option_String (End_String);
end if;
end Linker_Options;
when Pragma_Linker_Section =>
GNAT_Pragma;
Check_Arg_Count (2);
Check_Optional_Identifier (Arg1, Name_Entity);
Check_Optional_Identifier (Arg2, Name_Section);
Check_Arg_Is_Library_Level_Local_Name (Arg1);
Check_Arg_Is_Static_Expression (Arg2, Standard_String);
if Rep_Item_Too_Late (Entity (Expression (Arg1)), N) then
return;
else
Set_Has_Gigi_Rep_Item (Entity (Expression (Arg1)));
end if;
when Pragma_List =>
null;
when Pragma_Locking_Policy => declare
LP : Character;
begin
Check_Ada_83_Warning;
Check_Arg_Count (1);
Check_No_Identifiers;
Check_Arg_Is_Locking_Policy (Arg1);
Check_Valid_Configuration_Pragma;
Get_Name_String (Chars (Expression (Arg1)));
LP := Fold_Upper (Name_Buffer (1));
if Locking_Policy /= ' '
and then Locking_Policy /= LP
then
Error_Msg_Sloc := Locking_Policy_Sloc;
Error_Pragma ("locking policy incompatible with policy#");
else
Locking_Policy := LP;
if Locking_Policy_Sloc /= System_Location then
Locking_Policy_Sloc := Loc;
end if;
end if;
end;
when Pragma_Long_Float =>
GNAT_Pragma;
Check_Valid_Configuration_Pragma;
Check_Arg_Count (1);
Check_No_Identifier (Arg1);
Check_Arg_Is_One_Of (Arg1, Name_D_Float, Name_G_Float);
if not OpenVMS_On_Target then
Error_Pragma ("?pragma% ignored (applies only to Open'V'M'S)");
end if;
if Chars (Expression (Arg1)) = Name_D_Float then
if Opt.Float_Format_Long = 'G' then
Error_Pragma ("G_Float previously specified");
end if;
Opt.Float_Format_Long := 'D';
else
if Opt.Float_Format_Long = 'D' then
Error_Pragma ("D_Float previously specified");
end if;
Opt.Float_Format_Long := 'G';
end if;
Set_Standard_Fpt_Formats;
when Pragma_Machine_Attribute => Machine_Attribute : declare
Def_Id : Entity_Id;
begin
GNAT_Pragma;
if Arg_Count = 3 then
Check_Optional_Identifier (Arg3, "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_Arg_Is_Static_Expression (Arg2, Standard_String);
Def_Id := Entity (Expression (Arg1));
if Is_Access_Type (Def_Id) then
Def_Id := Designated_Type (Def_Id);
end if;
if Rep_Item_Too_Early (Def_Id, N) then
return;
end if;
Def_Id := Underlying_Type (Def_Id);
if Rep_Item_Too_Late (Def_Id, N) then
return;
else
Set_Has_Gigi_Rep_Item (Entity (Expression (Arg1)));
end if;
end Machine_Attribute;
when Pragma_Main => Main : declare
Args : Args_List (1 .. 3);
Names : constant Name_List (1 .. 3) := (
Name_Stack_Size,
Name_Task_Stack_Size_Default,
Name_Time_Slicing_Enabled);
Nod : Node_Id;
begin
GNAT_Pragma;
Gather_Associations (Names, Args);
for J in 1 .. 2 loop
if Present (Args (J)) then
Check_Arg_Is_Static_Expression (Args (J), Any_Integer);
end if;
end loop;
if Present (Args (3)) then
Check_Arg_Is_Static_Expression (Args (3), Standard_Boolean);
end if;
Nod := Next (N);
while Present (Nod) loop
if Nkind (Nod) = N_Pragma
and then Chars (Nod) = Name_Main
then
Error_Msg_Name_1 := Chars (N);
Error_Msg_N ("duplicate pragma% not permitted", Nod);
end if;
Next (Nod);
end loop;
end Main;
when Pragma_Main_Storage => Main_Storage : declare
Args : Args_List (1 .. 2);
Names : constant Name_List (1 .. 2) := (
Name_Working_Storage,
Name_Top_Guard);
Nod : Node_Id;
begin
GNAT_Pragma;
Gather_Associations (Names, Args);
for J in 1 .. 2 loop
if Present (Args (J)) then
Check_Arg_Is_Static_Expression (Args (J), Any_Integer);
end if;
end loop;
Check_In_Main_Program;
Nod := Next (N);
while Present (Nod) loop
if Nkind (Nod) = N_Pragma
and then Chars (Nod) = Name_Main_Storage
then
Error_Msg_Name_1 := Chars (N);
Error_Msg_N ("duplicate pragma% not permitted", Nod);
end if;
Next (Nod);
end loop;
end Main_Storage;
when Pragma_Memory_Size =>
GNAT_Pragma;
Check_No_Identifiers;
Check_Arg_Count (1);
Check_Arg_Is_Integer_Literal (Arg1);
when Pragma_No_Return => No_Return : declare
Id : Node_Id;
E : Entity_Id;
Found : Boolean;
begin
GNAT_Pragma;
Check_Arg_Count (1);
Check_No_Identifiers;
Check_Arg_Is_Local_Name (Arg1);
Id := Expression (Arg1);
Analyze (Id);
if not Is_Entity_Name (Id) then
Error_Pragma_Arg ("entity name required", Arg1);
end if;
if Etype (Id) = Any_Type then
raise Pragma_Exit;
end if;
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 ("no procedures found for pragma%");
end if;
end No_Return;
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;
when Pragma_Obsolescent => Obsolescent : declare
Subp : Node_Or_Entity_Id;
S : String_Id;
begin
GNAT_Pragma;
Check_At_Most_N_Arguments (1);
Check_No_Identifiers;
if Present (Prev (N)) then
Subp := Prev (N);
elsif No (Prev (N))
and then Nkind (Parent (N)) = N_Compilation_Unit_Aux
then
Subp := Unit (Parent (Parent (N)));
else
Subp := Empty;
end if;
if Nkind (Subp) /= N_Subprogram_Declaration then
Error_Pragma
("pragma% misplaced, must immediately " &
"follow subprogram spec");
else
Subp := Defining_Entity (Subp);
Set_Is_Obsolescent (Subp);
if Arg_Count = 1 then
Check_Arg_Is_Static_Expression (Arg1, Standard_String);
S := Strval (Expression (Arg1));
for J in 1 .. String_Length (S) loop
if not In_Character_Range (Get_String_Char (S, J)) then
Error_Pragma_Arg
("pragma% argument does not allow wide characters",
Arg1);
end if;
end loop;
Set_Obsolescent_Warning (Subp, Expression (Arg1));
end if;
end if;
end Obsolescent;
when Pragma_No_Run_Time =>
GNAT_Pragma;
Check_Valid_Configuration_Pragma;
Check_Arg_Count (0);
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);
when Pragma_Normalize_Scalars =>
Check_Ada_83_Warning;
Check_Arg_Count (0);
Check_Valid_Configuration_Pragma;
Normalize_Scalars := True;
Init_Or_Norm_Scalars := True;
when Pragma_Optimize =>
Check_No_Identifiers;
Check_Arg_Count (1);
Check_Arg_Is_One_Of (Arg1, Name_Time, Name_Space, Name_Off);
when Pragma_Optional_Overriding =>
Error_Msg_N ("pragma must appear immediately after subprogram", N);
when Pragma_Pack => Pack : declare
Assoc : constant Node_Id := Arg1;
Type_Id : Node_Id;
Typ : Entity_Id;
begin
Check_No_Identifiers;
Check_Arg_Count (1);
Check_Arg_Is_Local_Name (Arg1);
Type_Id := Expression (Assoc);
Find_Type (Type_Id);
Typ := Entity (Type_Id);
if Typ = Any_Type
or else Rep_Item_Too_Early (Typ, N)
then
return;
else
Typ := Underlying_Type (Typ);
end if;
if not Is_Array_Type (Typ) and then not Is_Record_Type (Typ) then
Error_Pragma ("pragma% must specify array or record type");
end if;
Check_First_Subtype (Arg1);
if Has_Pragma_Pack (Typ) then
Error_Pragma ("duplicate pragma%, only one allowed");
elsif Is_Array_Type (Typ) then
if Has_Aliased_Components (Base_Type (Typ)) then
Error_Pragma
("pragma% ignored, cannot pack aliased components?");
elsif Has_Atomic_Components (Typ)
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;
else pragma Assert (Is_Record_Type (Typ));
if not Rep_Item_Too_Late (Typ, N) then
Set_Has_Pragma_Pack (Base_Type (Typ));
Set_Is_Packed (Base_Type (Typ));
Set_Has_Non_Standard_Rep (Base_Type (Typ));
end if;
end if;
end Pack;
when Pragma_Page =>
null;
when Pragma_Passive =>
GNAT_Pragma;
if Nkind (Parent (N)) /= N_Task_Definition then
Error_Pragma ("pragma% must be within task definition");
end if;
if Arg_Count /= 0 then
Check_Arg_Count (1);
Check_Arg_Is_One_Of (Arg1, Name_Semaphore, Name_No);
end if;
when Pragma_Polling =>
GNAT_Pragma;
Check_Arg_Count (1);
Check_No_Identifiers;
Check_Arg_Is_One_Of (Arg1, Name_On, Name_Off);
Polling_Required := (Chars (Expression (Arg1)) = Name_On);
when Pragma_Persistent_Data => declare
Ent : Entity_Id;
begin
GNAT_Pragma;
Check_Valid_Configuration_Pragma;
Check_Arg_Count (0);
Ent := Find_Lib_Unit_Name;
Set_Is_Preelaborated (Ent);
end;
when Pragma_Persistent_Object => declare
Decl : Node_Id;
Ent : Entity_Id;
MA : Node_Id;
Str : String_Id;
begin
GNAT_Pragma;
Check_Arg_Count (1);
Check_Arg_Is_Library_Level_Local_Name (Arg1);
if not Is_Entity_Name (Expression (Arg1))
or else
(Ekind (Entity (Expression (Arg1))) /= E_Variable
and then Ekind (Entity (Expression (Arg1))) /= E_Constant)
then
Error_Pragma_Arg ("pragma only applies to objects", Arg1);
end if;
Ent := Entity (Expression (Arg1));
Decl := Parent (Ent);
if Nkind (Decl) /= N_Object_Declaration then
return;
end if;
if No_Initialization (Decl) then
Error_Msg_N
("initialization for persistent object"
& "must be static expression", Decl);
return;
end if;
if No (Expression (Decl)) then
Start_String;
Store_String_Chars ("section ("".persistent.bss"")");
Str := End_String;
else
if not Is_OK_Static_Expression (Expression (Decl)) then
Flag_Non_Static_Expr
("initialization for persistent object"
& "must be static expression!", Expression (Decl));
return;
end if;
Start_String;
Store_String_Chars ("section ("".persistent.data"")");
Str := End_String;
end if;
MA :=
Make_Pragma
(Sloc (N),
Name_Machine_Attribute,
New_List
(Make_Pragma_Argument_Association
(Sloc => Sloc (Arg1),
Expression => New_Occurrence_Of (Ent, Sloc (Ent))),
Make_Pragma_Argument_Association
(Sloc => Sloc (Arg1),
Expression =>
Make_String_Literal
(Sloc => Sloc (Arg1),
Strval => Str))));
Insert_After (N, MA);
Analyze (MA);
Set_Has_Gigi_Rep_Item (Ent);
end;
when Pragma_Preelaborate => Preelaborate : declare
Pa : constant Node_Id := Parent (N);
Pk : constant Node_Kind := Nkind (Pa);
Ent : Entity_Id;
begin
Check_Ada_83_Warning;
Check_Valid_Library_Unit_Pragma;
if Nkind (N) = N_Null_Statement then
return;
end if;
Ent := Find_Lib_Unit_Name;
if Present (Ent)
and then not (Pk = N_Package_Specification
and then Present (Generic_Parent (Pa)))
then
if not Debug_Flag_U then
Set_Is_Preelaborated (Ent);
Set_Suppress_Elaboration_Warnings (Ent);
end if;
end if;
end Preelaborate;
when Pragma_Priority => Priority : declare
P : constant Node_Id := Parent (N);
Arg : Node_Id;
begin
Check_No_Identifiers;
Check_Arg_Count (1);
if Nkind (P) = N_Subprogram_Body then
Check_In_Main_Program;
Arg := Expression (Arg1);
Analyze_And_Resolve (Arg, Standard_Integer);
if not Is_Static_Expression (Arg) then
Flag_Non_Static_Expr
("main subprogram priority is not static!", Arg);
raise Pragma_Exit;
elsif Raises_Constraint_Error (Arg) then
null;
else
declare
Val : constant Uint := Expr_Value (Arg);
begin
if Val < 0
or else Val > Expr_Value (Expression
(Parent (RTE (RE_Max_Priority))))
then
Error_Pragma_Arg
("main subprogram priority is out of range", Arg1);
end if;
end;
end if;
Set_Main_Priority
(Current_Sem_Unit, UI_To_Int (Expr_Value (Arg)));
elsif Nkind (P) = N_Protected_Definition
or else
Nkind (P) = N_Task_Definition
then
Arg := Expression (Arg1);
Analyze_Per_Use_Expression (Arg, Standard_Integer);
if not Is_Static_Expression (Arg) then
Check_Restriction (Static_Priorities, Arg);
end if;
else
Pragma_Misplaced;
end if;
if Has_Priority_Pragma (P) then
Error_Pragma ("duplicate pragma% not allowed");
else
Set_Has_Priority_Pragma (P, True);
if Nkind (P) = N_Protected_Definition
or else
Nkind (P) = N_Task_Definition
then
Record_Rep_Item (Defining_Identifier (Parent (P)), N);
end if;
end if;
end Priority;
when Pragma_Profile =>
Check_Arg_Count (1);
Check_Valid_Configuration_Pragma;
Check_No_Identifiers;
declare
Argx : constant Node_Id := Get_Pragma_Arg (Arg1);
begin
if Chars (Argx) = Name_Ravenscar then
Set_Ravenscar_Profile (N);
elsif Chars (Argx) = Name_Restricted then
Set_Profile_Restrictions (Restricted, N, Warn => False);
else
Error_Pragma_Arg ("& is not a valid profile", Argx);
end if;
end;
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;
when Pragma_Propagate_Exceptions =>
GNAT_Pragma;
Check_Arg_Count (0);
if In_Extended_Main_Source_Unit (N) then
Propagate_Exceptions := True;
end if;
when Pragma_Psect_Object | Pragma_Common_Object =>
Psect_Object : declare
Args : Args_List (1 .. 3);
Names : constant Name_List (1 .. 3) := (
Name_Internal,
Name_External,
Name_Size);
Internal : Node_Id renames Args (1);
External : Node_Id renames Args (2);
Size : Node_Id renames Args (3);
Def_Id : Entity_Id;
procedure Check_Too_Long (Arg : Node_Id);
procedure Check_Too_Long (Arg : Node_Id) is
X : constant Node_Id := Original_Node (Arg);
begin
if Nkind (X) /= N_String_Literal
and then
Nkind (X) /= N_Identifier
then
Error_Pragma_Arg
("inappropriate argument for pragma %", Arg);
end if;
if OpenVMS_On_Target then
if (Nkind (X) = N_String_Literal
and then String_Length (Strval (X)) > 31)
or else
(Nkind (X) = N_Identifier
and then Length_Of_Name (Chars (X)) > 31)
then
Error_Pragma_Arg
("argument for pragma % is longer than 31 characters",
Arg);
end if;
end if;
end Check_Too_Long;
begin
GNAT_Pragma;
Gather_Associations (Names, Args);
Process_Extended_Import_Export_Internal_Arg (Internal);
Def_Id := Entity (Internal);
if Ekind (Def_Id) /= E_Constant
and then Ekind (Def_Id) /= E_Variable
then
Error_Pragma_Arg
("pragma% must designate an object", Internal);
end if;
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",
Internal);
end if;
if Is_Concurrent_Type (Etype (Internal)) then
Error_Pragma_Arg
("cannot specify pragma % for task/protected object",
Internal);
end if;
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", Internal);
end if;
if Is_Record_Type (Etype (Internal)) then
declare
Ent : Entity_Id;
Decl : Entity_Id;
begin
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", Internal);
exit;
else
Next_Entity (Ent);
end if;
end loop;
end;
end if;
if Present (Size) then
Check_Too_Long (Size);
end if;
if Present (External) then
Check_Arg_Is_External_Name (External);
Check_Too_Long (External);
end if;
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;
if Nkind (N) = N_Null_Statement then
return;
end if;
Ent := Find_Lib_Unit_Name;
Set_Is_Pure (Ent);
Set_Suppress_Elaboration_Warnings (Ent);
end Pure;
when Pragma_Pure_Function => Pure_Function : declare
E_Id : Node_Id;
E : Entity_Id;
Def_Id : Entity_Id;
Effective : Boolean := False;
begin
GNAT_Pragma;
Check_Arg_Count (1);
Check_Optional_Identifier (Arg1, Name_Entity);
Check_Arg_Is_Local_Name (Arg1);
E_Id := Expression (Arg1);
if Error_Posted (E_Id) then
return;
end if;
E := Entity (E_Id);
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_Msg_NE ("pragma Pure_Function on& is redundant?",
N, Entity (E_Id));
end if;
end if;
end Pure_Function;
when Pragma_Queuing_Policy => declare
QP : Character;
begin
Check_Ada_83_Warning;
Check_Arg_Count (1);
Check_No_Identifiers;
Check_Arg_Is_Queuing_Policy (Arg1);
Check_Valid_Configuration_Pragma;
Get_Name_String (Chars (Expression (Arg1)));
QP := Fold_Upper (Name_Buffer (1));
if Queuing_Policy /= ' '
and then Queuing_Policy /= QP
then
Error_Msg_Sloc := Queuing_Policy_Sloc;
Error_Pragma ("queuing policy incompatible with policy#");
else
Queuing_Policy := QP;
if Queuing_Policy_Sloc /= System_Location then
Queuing_Policy_Sloc := Loc;
end if;
end if;
end;
when Pragma_Remote_Call_Interface => Remote_Call_Interface : declare
Cunit_Node : Node_Id;
Cunit_Ent : Entity_Id;
K : Node_Kind;
begin
Check_Ada_83_Warning;
Check_Valid_Library_Unit_Pragma;
if Nkind (N) = N_Null_Statement then
return;
end if;
Cunit_Node := Cunit (Current_Sem_Unit);
K := Nkind (Unit (Cunit_Node));
Cunit_Ent := Cunit_Entity (Current_Sem_Unit);
if K = N_Package_Declaration
or else K = N_Generic_Package_Declaration
or else K = N_Subprogram_Declaration
or else K = N_Generic_Subprogram_Declaration
or else (K = N_Subprogram_Body
and then Acts_As_Spec (Unit (Cunit_Node)))
then
null;
else
Error_Pragma (
"pragma% must apply to package or subprogram declaration");
end if;
Set_Is_Remote_Call_Interface (Cunit_Ent);
end Remote_Call_Interface;
when Pragma_Remote_Types => Remote_Types : declare
Cunit_Node : Node_Id;
Cunit_Ent : Entity_Id;
begin
Check_Ada_83_Warning;
Check_Valid_Library_Unit_Pragma;
if Nkind (N) = N_Null_Statement then
return;
end if;
Cunit_Node := Cunit (Current_Sem_Unit);
Cunit_Ent := Cunit_Entity (Current_Sem_Unit);
if Nkind (Unit (Cunit_Node)) /= N_Package_Declaration
and then
Nkind (Unit (Cunit_Node)) /= N_Generic_Package_Declaration
then
Error_Pragma (
"pragma% can only apply to a package declaration");
end if;
Set_Is_Remote_Types (Cunit_Ent);
end Remote_Types;
when Pragma_Ravenscar =>
GNAT_Pragma;
Check_Arg_Count (0);
Check_Valid_Configuration_Pragma;
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;
when Pragma_Restricted_Run_Time =>
GNAT_Pragma;
Check_Arg_Count (0);
Check_Valid_Configuration_Pragma;
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;
when Pragma_Restrictions =>
Process_Restrictions_Or_Restriction_Warnings;
when Pragma_Restriction_Warnings =>
Process_Restrictions_Or_Restriction_Warnings;
when Pragma_Reviewable =>
Check_Ada_83_Warning;
Check_Arg_Count (0);
when Pragma_Share_Generic =>
GNAT_Pragma;
Process_Generic_List;
when Pragma_Shared =>
GNAT_Pragma;
Process_Atomic_Shared_Volatile;
when Pragma_Shared_Passive => Shared_Passive : declare
Cunit_Node : Node_Id;
Cunit_Ent : Entity_Id;
begin
Check_Ada_83_Warning;
Check_Valid_Library_Unit_Pragma;
if Nkind (N) = N_Null_Statement then
return;
end if;
Cunit_Node := Cunit (Current_Sem_Unit);
Cunit_Ent := Cunit_Entity (Current_Sem_Unit);
if Nkind (Unit (Cunit_Node)) /= N_Package_Declaration
and then
Nkind (Unit (Cunit_Node)) /= N_Generic_Package_Declaration
then
Error_Pragma (
"pragma% can only apply to a package declaration");
end if;
Set_Is_Shared_Passive (Cunit_Ent);
end Shared_Passive;
when Pragma_Source_File_Name =>
GNAT_Pragma;
Check_Valid_Configuration_Pragma;
when Pragma_Source_File_Name_Project =>
GNAT_Pragma;
Check_Valid_Configuration_Pragma;
if Present (Parent (N)) then
Error_Pragma
("pragma% can only appear in a configuration pragmas file");
end if;
when Pragma_Source_Reference =>
GNAT_Pragma;
when Pragma_Storage_Size => Storage_Size : declare
P : constant Node_Id := Parent (N);
Arg : Node_Id;
begin
Check_No_Identifiers;
Check_Arg_Count (1);
Arg := Expression (Arg1);
Analyze_Per_Use_Expression (Arg, Any_Integer);
if not Is_Static_Expression (Arg) then
Check_Restriction (Static_Storage_Size, Arg);
end if;
if Nkind (P) /= N_Task_Definition then
Pragma_Misplaced;
return;
else
if Has_Storage_Size_Pragma (P) then
Error_Pragma ("duplicate pragma% not allowed");
else
Set_Has_Storage_Size_Pragma (P, True);
end if;
Record_Rep_Item (Defining_Identifier (Parent (P)), N);
end if;
end Storage_Size;
when Pragma_Storage_Unit =>
Check_No_Identifiers;
Check_Arg_Count (1);
Check_Arg_Is_Integer_Literal (Arg1);
if Intval (Expression (Arg1)) /=
UI_From_Int (Ttypes.System_Storage_Unit)
then
Error_Msg_Uint_1 := UI_From_Int (Ttypes.System_Storage_Unit);
Error_Pragma_Arg
("the only allowed argument for pragma% is ^", Arg1);
end if;
when Pragma_Stream_Convert => Stream_Convert : declare
procedure Check_OK_Stream_Convert_Function (Arg : Node_Id);
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;
begin
GNAT_Pragma;
Check_Arg_Count (3);
Check_Optional_Identifier (Arg1, Name_Entity);
Check_Optional_Identifier (Arg2, Name_Read);
Check_Optional_Identifier (Arg3, Name_Write);
Check_Arg_Is_Local_Name (Arg1);
Check_OK_Stream_Convert_Function (Arg2);
Check_OK_Stream_Convert_Function (Arg3);
declare
Typ : constant Entity_Id :=
Underlying_Type (Entity (Expression (Arg1)));
Read : constant Entity_Id := Entity (Expression (Arg2));
Write : constant Entity_Id := Entity (Expression (Arg3));
begin
if Etype (Typ) = Any_Type
or else
Etype (Read) = Any_Type
or else
Etype (Write) = Any_Type
then
return;
end if;
Check_First_Subtype (Arg1);
if Rep_Item_Too_Early (Typ, N)
or else
Rep_Item_Too_Late (Typ, N)
then
return;
end if;
if Underlying_Type (Etype (Read)) /= Typ then
Error_Pragma_Arg
("incorrect return type for function&", Arg2);
end if;
if Underlying_Type (Etype (First_Formal (Write))) /= Typ then
Error_Pragma_Arg
("incorrect parameter type for function&", Arg3);
end if;
if Underlying_Type (Etype (First_Formal (Read))) /=
Underlying_Type (Etype (Write))
then
Error_Pragma_Arg
("result type of & does not match Read parameter type",
Arg3);
end if;
end;
end Stream_Convert;
when Pragma_Style_Checks => Style_Checks : declare
A : constant Node_Id := Expression (Arg1);
S : String_Id;
C : Char_Code;
begin
GNAT_Pragma;
Check_No_Identifiers;
if Arg_Count = 2 then
Check_Arg_Is_One_Of (Arg1, Name_On, Name_Off);
declare
E_Id : Node_Id;
E : Entity_Id;
begin
E_Id := Expression (Arg2);
Analyze (E_Id);
if not Is_Entity_Name (E_Id) then
Error_Pragma_Arg
("second argument of pragma% must be entity name",
Arg2);
end if;
E := Entity (E_Id);
if E = Any_Id then
return;
else
loop
Set_Suppress_Style_Checks (E,
(Chars (Expression (Arg1)) = Name_Off));
exit when No (Homonym (E));
E := Homonym (E);
end loop;
end if;
end;
else
Check_Arg_Count (1);
if Nkind (A) = N_String_Literal then
S := Strval (A);
declare
Slen : constant Natural := Natural (String_Length (S));
Options : String (1 .. Slen);
J : Natural;
begin
J := 1;
loop
C := Get_String_Char (S, Int (J));
exit when not In_Character_Range (C);
Options (J) := Get_Character (C);
if J = Slen then
Set_Style_Check_Options (Options);
exit;
else
J := J + 1;
end if;
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_On then
Style_Check := True;
elsif Chars (A) = Name_Off then
Style_Check := False;
end if;
end if;
end if;
end Style_Checks;
when Pragma_Subtitle =>
GNAT_Pragma;
Check_Arg_Count (1);
Check_Optional_Identifier (Arg1, Name_Subtitle);
Check_Arg_Is_String_Literal (Arg1);
when Pragma_Suppress =>
Process_Suppress_Unsuppress (True);
when Pragma_Suppress_All =>
GNAT_Pragma;
Check_Arg_Count (0);
if Nkind (Parent (N)) /= N_Compilation_Unit_Aux
or else not Is_List_Member (N)
or else List_Containing (N) /= Pragmas_After (Parent (N))
then
Error_Pragma
("misplaced pragma%, must follow compilation unit");
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);
Set_Debug_Info_Off (Entity (Get_Pragma_Arg (Arg1)));
when Pragma_Suppress_Exception_Locations =>
GNAT_Pragma;
Check_Arg_Count (0);
Check_Valid_Configuration_Pragma;
Exception_Locations_Suppressed := True;
when Pragma_Suppress_Initialization => Suppress_Init : declare
E_Id : Node_Id;
E : Entity_Id;
begin
GNAT_Pragma;
Check_Arg_Count (1);
Check_Optional_Identifier (Arg1, Name_Entity);
Check_Arg_Is_Local_Name (Arg1);
E_Id := Expression (Arg1);
if Etype (E_Id) = Any_Type then
return;
end if;
E := Entity (E_Id);
if Is_Type (E) then
if Is_Incomplete_Or_Private_Type (E) then
if No (Full_View (Base_Type (E))) then
Error_Pragma_Arg
("argument of pragma% cannot be an incomplete type",
Arg1);
else
Set_Suppress_Init_Proc (Full_View (Base_Type (E)));
end if;
else
Set_Suppress_Init_Proc (Base_Type (E));
end if;
else
Error_Pragma_Arg
("pragma% requires argument that is a type name", Arg1);
end if;
end Suppress_Init;
when Pragma_System_Name =>
Check_No_Identifiers;
Check_Arg_Count (1);
Check_Arg_Is_One_Of (Arg1, Name_Gcc, Name_Gnat);
when Pragma_Task_Dispatching_Policy => declare
DP : Character;
begin
Check_Ada_83_Warning;
Check_Arg_Count (1);
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));
if Task_Dispatching_Policy /= ' '
and then Task_Dispatching_Policy /= DP
then
Error_Msg_Sloc := Task_Dispatching_Policy_Sloc;
Error_Pragma
("task dispatching policy incompatible with policy#");
else
Task_Dispatching_Policy := DP;
if Task_Dispatching_Policy_Sloc /= System_Location then
Task_Dispatching_Policy_Sloc := Loc;
end if;
end if;
end;
when Pragma_Task_Info => Task_Info : declare
P : constant Node_Id := Parent (N);
begin
GNAT_Pragma;
if Nkind (P) /= N_Task_Definition then
Error_Pragma ("pragma% must appear in task definition");
end if;
Check_No_Identifiers;
Check_Arg_Count (1);
Analyze_And_Resolve (Expression (Arg1), RTE (RE_Task_Info_Type));
if Etype (Expression (Arg1)) = Any_Type then
return;
end if;
if Has_Task_Info_Pragma (P) then
Error_Pragma ("duplicate pragma% not allowed");
else
Set_Has_Task_Info_Pragma (P, True);
end if;
end Task_Info;
when Pragma_Task_Name => Task_Name : declare
P : constant Node_Id := Parent (N);
Arg : Node_Id;
begin
Check_No_Identifiers;
Check_Arg_Count (1);
Arg := Expression (Arg1);
Analyze_And_Resolve (Arg, Standard_String);
if Nkind (P) /= N_Task_Definition then
Pragma_Misplaced;
end if;
if Has_Task_Name_Pragma (P) then
Error_Pragma ("duplicate pragma% not allowed");
else
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 : constant Name_List (1 .. 2) := (
Name_Task_Type,
Name_Top_Guard);
Task_Type : Node_Id renames Args (1);
Top_Guard : Node_Id renames Args (2);
Ent : Entity_Id;
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 not Is_Task_Type (Ent) then
Error_Pragma_Arg
("argument for pragma% must be task type", Task_Type);
end if;
if No (Top_Guard) then
Error_Pragma_Arg
("pragma% takes two arguments", Task_Type);
else
Check_Arg_Is_Static_Expression (Top_Guard, Any_Integer);
end if;
Check_First_Subtype (Task_Type);
if Rep_Item_Too_Late (Ent, N) then
raise Pragma_Exit;
end if;
end Task_Storage;
when Pragma_Thread_Body => Thread_Body : declare
Id : Node_Id;
SS : Node_Id;
E : Entity_Id;
begin
GNAT_Pragma;
Check_At_Least_N_Arguments (1);
Check_At_Most_N_Arguments (2);
Check_Optional_Identifier (Arg1, Name_Entity);
Check_Arg_Is_Local_Name (Arg1);
Id := Expression (Arg1);
if not Is_Entity_Name (Id)
or else not Is_Subprogram (Entity (Id))
then
Error_Pragma_Arg ("subprogram name required", Arg1);
end if;
E := Entity (Id);
if Present (Alias (E))
and then Nkind (Parent (Declaration_Node (E))) =
N_Subprogram_Renaming_Declaration
then
E := Alias (E);
end if;
if Nkind (Parent (Declaration_Node (E))) = N_Subprogram_Body then
Error_Pragma
("pragma% requires separate spec and must come before body");
elsif Rep_Item_Too_Early (E, N)
or else
Rep_Item_Too_Late (E, N)
then
raise Pragma_Exit;
elsif Is_Thread_Body (E) then
Error_Pragma_Arg
("only one thread body pragma allowed", Arg1);
elsif Present (Homonym (E))
and then Scope (Homonym (E)) = Current_Scope
then
Error_Pragma_Arg
("thread body subprogram must not be overloaded", Arg1);
end if;
Set_Is_Thread_Body (E);
if Arg_Count = 2 then
Check_Optional_Identifier (Arg2, Name_Secondary_Stack_Size);
SS := Expression (Arg2);
Analyze_And_Resolve (SS, Any_Integer);
end if;
end Thread_Body;
when Pragma_Time_Slice => Time_Slice : declare
Val : Ureal;
Nod : Node_Id;
begin
GNAT_Pragma;
Check_Arg_Count (1);
Check_No_Identifiers;
Check_In_Main_Program;
Check_Arg_Is_Static_Expression (Arg1, Standard_Duration);
if not Error_Posted (Arg1) then
Nod := Next (N);
while Present (Nod) loop
if Nkind (Nod) = N_Pragma
and then Chars (Nod) = Name_Time_Slice
then
Error_Msg_Name_1 := Chars (N);
Error_Msg_N ("duplicate pragma% not permitted", Nod);
end if;
Next (Nod);
end loop;
end if;
if Get_Source_Unit (Loc) = Main_Unit then
Opt.Time_Slice_Set := True;
Val := Expr_Value_R (Expression (Arg1));
if Val <= Ureal_0 then
Opt.Time_Slice_Value := 0;
elsif Val > UR_From_Uint (UI_From_Int (1000)) then
Opt.Time_Slice_Value := 1_000_000_000;
else
Opt.Time_Slice_Value :=
UI_To_Int (UR_To_Uint (Val * UI_From_Int (1_000_000)));
end if;
end if;
end Time_Slice;
when Pragma_Title => Title : declare
Args : Args_List (1 .. 2);
Names : constant Name_List (1 .. 2) := (
Name_Title,
Name_Subtitle);
begin
GNAT_Pragma;
Gather_Associations (Names, Args);
for J in 1 .. 2 loop
if Present (Args (J)) then
Check_Arg_Is_String_Literal (Args (J));
end if;
end loop;
end Title;
when Pragma_Unchecked_Union => Unchecked_Union : declare
Assoc : constant Node_Id := Arg1;
Type_Id : constant Node_Id := Expression (Assoc);
Typ : Entity_Id;
Discr : Entity_Id;
Tdef : Node_Id;
Clist : Node_Id;
Vpart : Node_Id;
Comp : Node_Id;
Variant : Node_Id;
begin
GNAT_Pragma;
Check_No_Identifiers;
Check_Arg_Count (1);
Check_Arg_Is_Local_Name (Arg1);
Find_Type (Type_Id);
Typ := Entity (Type_Id);
if Typ = Any_Type
or else Rep_Item_Too_Early (Typ, N)
then
return;
else
Typ := Underlying_Type (Typ);
end if;
if Rep_Item_Too_Late (Typ, N) then
return;
end if;
Check_First_Subtype (Arg1);
if not Is_Record_Type (Typ) then
Error_Msg_N ("Unchecked_Union must be record type", Typ);
return;
elsif Is_Tagged_Type (Typ) then
Error_Msg_N ("Unchecked_Union must not be tagged", Typ);
return;
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
if not Has_Discriminants (Typ) then
Error_Msg_N
("Unchecked_Union must have one discriminant", Typ);
return;
end if;
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);
Comp := First (Component_Items (Clist));
while Present (Comp) loop
Check_Component (Comp);
Next (Comp);
end loop;
if No (Clist) or else No (Variant_Part (Clist)) then
Error_Msg_N
("Unchecked_Union must have variant part",
Tdef);
return;
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_Convention (Typ, Convention_C);
Set_Has_Unchecked_Union (Base_Type (Typ), True);
Set_Is_Unchecked_Union (Base_Type (Typ), True);
end Unchecked_Union;
when Pragma_Unimplemented_Unit => Unimplemented_Unit : declare
Cunitent : constant Entity_Id :=
Cunit_Entity (Get_Source_Unit (Loc));
Ent_Kind : constant Entity_Kind :=
Ekind (Cunitent);
begin
GNAT_Pragma;
Check_Arg_Count (0);
if Operating_Mode = Generate_Code
or else Ent_Kind = E_Generic_Function
or else Ent_Kind = E_Generic_Procedure
or else Ent_Kind = E_Generic_Package
then
Get_Name_String (Chars (Cunitent));
Set_Casing (Mixed_Case);
Write_Str (Name_Buffer (1 .. Name_Len));
Write_Str (" is not implemented");
Write_Eol;
raise Unrecoverable_Error;
end if;
end Unimplemented_Unit;
when Pragma_Universal_Data =>
GNAT_Pragma;
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;
when Pragma_Unreferenced => Unreferenced : declare
Arg_Node : Node_Id;
Arg_Expr : Node_Id;
Arg_Ent : Entity_Id;
begin
GNAT_Pragma;
Check_At_Least_N_Arguments (1);
Arg_Node := Arg1;
while Present (Arg_Node) loop
Check_No_Identifier (Arg_Node);
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 Is_Overloaded (Arg_Expr) then
Generate_Reference (Arg_Ent, N);
end if;
Set_Has_Pragma_Unreferenced (Arg_Ent);
end if;
Next (Arg_Node);
end loop;
end Unreferenced;
when Pragma_Unreserve_All_Interrupts =>
GNAT_Pragma;
Check_Arg_Count (0);
if In_Extended_Main_Code_Unit (Main_Unit_Entity) then
Unreserve_All_Interrupts := True;
end if;
when Pragma_Unsuppress =>
GNAT_Pragma;
Process_Suppress_Unsuppress (False);
when Pragma_Use_VADS_Size =>
GNAT_Pragma;
Check_Arg_Count (0);
Check_Valid_Configuration_Pragma;
Use_VADS_Size := True;
when Pragma_Validity_Checks => Validity_Checks : declare
A : constant Node_Id := Expression (Arg1);
S : String_Id;
C : Char_Code;
begin
GNAT_Pragma;
Check_Arg_Count (1);
Check_No_Identifiers;
if Nkind (A) = N_String_Literal then
S := Strval (A);
declare
Slen : constant Natural := Natural (String_Length (S));
Options : String (1 .. Slen);
J : Natural;
begin
J := 1;
loop
C := Get_String_Char (S, Int (J));
exit when not In_Character_Range (C);
Options (J) := Get_Character (C);
if J = Slen then
Set_Validity_Check_Options (Options);
exit;
else
J := J + 1;
end if;
end loop;
end;
elsif Nkind (A) = N_Identifier then
if Chars (A) = Name_All_Checks then
Set_Validity_Check_Options ("a");
elsif Chars (A) = Name_On then
Validity_Checks_On := True;
elsif Chars (A) = Name_Off then
Validity_Checks_On := False;
end if;
end if;
end Validity_Checks;
when Pragma_Volatile =>
Process_Atomic_Shared_Volatile;
when Pragma_Warnings => Warnings : begin
GNAT_Pragma;
Check_At_Least_N_Arguments (1);
Check_At_Most_N_Arguments (2);
Check_No_Identifiers;
if Arg_Count /= 1 then
Check_Arg_Is_One_Of (Arg1, Name_On, Name_Off);
Check_Arg_Count (2);
declare
E_Id : Node_Id;
E : Entity_Id;
begin
E_Id := Expression (Arg2);
Analyze (E_Id);
if (In_Instance_Body
or else In_Inlined_Body)
and then Nkind (E_Id) = N_Unchecked_Type_Conversion
then
E_Id := Expression (E_Id);
end if;
if not Is_Entity_Name (E_Id) then
Error_Pragma_Arg
("second argument of pragma% must be entity name",
Arg2);
end if;
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;
end;
end if;
end Warnings;
when Pragma_Weak_External => Weak_External : declare
Ent : Entity_Id;
begin
GNAT_Pragma;
Check_Arg_Count (1);
Check_Optional_Identifier (Arg1, Name_Entity);
Check_Arg_Is_Library_Level_Local_Name (Arg1);
Ent := Entity (Expression (Arg1));
if Rep_Item_Too_Early (Ent, N) then
return;
else
Ent := Underlying_Type (Ent);
end if;
if Rep_Item_Too_Late (Ent, N) then
return;
else
Set_Has_Gigi_Rep_Item (Ent);
end if;
end Weak_External;
when Unknown_Pragma =>
raise Program_Error;
end case;
exception
when Pragma_Exit => null;
end Analyze_Pragma;
function Delay_Config_Pragma_Analyze (N : Node_Id) return Boolean is
begin
return Chars (N) = Name_Interrupt_State;
end Delay_Config_Pragma_Analyze;
function Get_Base_Subprogram (Def_Id : Entity_Id) return Entity_Id is
Result : Entity_Id;
begin
Result := Def_Id;
while Is_Subprogram (Result)
and then
(Is_Generic_Instance (Result)
or else Nkind (Parent (Declaration_Node (Result))) =
N_Subprogram_Renaming_Declaration)
and then Present (Alias (Result))
loop
Result := Alias (Result);
end loop;
return Result;
end Get_Base_Subprogram;
function Is_Config_Static_String (Arg : Node_Id) return Boolean is
function Add_Config_Static_String (Arg : Node_Id) return Boolean;
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;
begin
Name_Len := 0;
return Add_Config_Static_String (Arg);
end Is_Config_Static_String;
Sig_Flags : constant array (Pragma_Id) of Int :=
(Pragma_AST_Entry => -1,
Pragma_Abort_Defer => -1,
Pragma_Ada_83 => -1,
Pragma_Ada_95 => -1,
Pragma_Ada_05 => -1,
Pragma_All_Calls_Remote => -1,
Pragma_Annotate => -1,
Pragma_Assert => -1,
Pragma_Asynchronous => -1,
Pragma_Atomic => 0,
Pragma_Atomic_Components => 0,
Pragma_Attach_Handler => -1,
Pragma_CPP_Class => 0,
Pragma_CPP_Constructor => 0,
Pragma_CPP_Virtual => 0,
Pragma_CPP_Vtable => 0,
Pragma_C_Pass_By_Copy => 0,
Pragma_Comment => 0,
Pragma_Common_Object => -1,
Pragma_Compile_Time_Warning => -1,
Pragma_Complex_Representation => 0,
Pragma_Component_Alignment => -1,
Pragma_Controlled => 0,
Pragma_Convention => 0,
Pragma_Convention_Identifier => 0,
Pragma_Debug => -1,
Pragma_Detect_Blocking => -1,
Pragma_Discard_Names => 0,
Pragma_Elaborate => -1,
Pragma_Elaborate_All => -1,
Pragma_Elaborate_Body => -1,
Pragma_Elaboration_Checks => -1,
Pragma_Eliminate => -1,
Pragma_Explicit_Overriding => -1,
Pragma_Export => -1,
Pragma_Export_Exception => -1,
Pragma_Export_Function => -1,
Pragma_Export_Object => -1,
Pragma_Export_Procedure => -1,
Pragma_Export_Value => -1,
Pragma_Export_Valued_Procedure => -1,
Pragma_Extend_System => -1,
Pragma_Extensions_Allowed => -1,
Pragma_External => -1,
Pragma_External_Name_Casing => -1,
Pragma_Finalize_Storage_Only => 0,
Pragma_Float_Representation => 0,
Pragma_Ident => -1,
Pragma_Import => +2,
Pragma_Import_Exception => 0,
Pragma_Import_Function => 0,
Pragma_Import_Object => 0,
Pragma_Import_Procedure => 0,
Pragma_Import_Valued_Procedure => 0,
Pragma_Initialize_Scalars => -1,
Pragma_Inline => 0,
Pragma_Inline_Always => 0,
Pragma_Inline_Generic => 0,
Pragma_Inspection_Point => -1,
Pragma_Interface => +2,
Pragma_Interface_Name => +2,
Pragma_Interrupt_Handler => -1,
Pragma_Interrupt_Priority => -1,
Pragma_Interrupt_State => -1,
Pragma_Java_Constructor => -1,
Pragma_Java_Interface => -1,
Pragma_Keep_Names => 0,
Pragma_License => -1,
Pragma_Link_With => -1,
Pragma_Linker_Alias => -1,
Pragma_Linker_Options => -1,
Pragma_Linker_Section => -1,
Pragma_List => -1,
Pragma_Locking_Policy => -1,
Pragma_Long_Float => -1,
Pragma_Machine_Attribute => -1,
Pragma_Main => -1,
Pragma_Main_Storage => -1,
Pragma_Memory_Size => -1,
Pragma_No_Return => 0,
Pragma_No_Run_Time => -1,
Pragma_No_Strict_Aliasing => -1,
Pragma_Normalize_Scalars => -1,
Pragma_Obsolescent => 0,
Pragma_Optimize => -1,
Pragma_Optional_Overriding => -1,
Pragma_Pack => 0,
Pragma_Page => -1,
Pragma_Passive => -1,
Pragma_Polling => -1,
Pragma_Persistent_Data => -1,
Pragma_Persistent_Object => -1,
Pragma_Preelaborate => -1,
Pragma_Priority => -1,
Pragma_Profile => 0,
Pragma_Profile_Warnings => 0,
Pragma_Propagate_Exceptions => -1,
Pragma_Psect_Object => -1,
Pragma_Pure => 0,
Pragma_Pure_Function => 0,
Pragma_Queuing_Policy => -1,
Pragma_Ravenscar => -1,
Pragma_Remote_Call_Interface => -1,
Pragma_Remote_Types => -1,
Pragma_Restricted_Run_Time => -1,
Pragma_Restriction_Warnings => -1,
Pragma_Restrictions => -1,
Pragma_Reviewable => -1,
Pragma_Share_Generic => -1,
Pragma_Shared => -1,
Pragma_Shared_Passive => -1,
Pragma_Source_File_Name => -1,
Pragma_Source_File_Name_Project => -1,
Pragma_Source_Reference => -1,
Pragma_Storage_Size => -1,
Pragma_Storage_Unit => -1,
Pragma_Stream_Convert => -1,
Pragma_Style_Checks => -1,
Pragma_Subtitle => -1,
Pragma_Suppress => 0,
Pragma_Suppress_Exception_Locations => 0,
Pragma_Suppress_All => -1,
Pragma_Suppress_Debug_Info => 0,
Pragma_Suppress_Initialization => 0,
Pragma_System_Name => -1,
Pragma_Task_Dispatching_Policy => -1,
Pragma_Task_Info => -1,
Pragma_Task_Name => -1,
Pragma_Task_Storage => 0,
Pragma_Thread_Body => +2,
Pragma_Time_Slice => -1,
Pragma_Title => -1,
Pragma_Unchecked_Union => 0,
Pragma_Unimplemented_Unit => -1,
Pragma_Universal_Data => -1,
Pragma_Unreferenced => -1,
Pragma_Unreserve_All_Interrupts => -1,
Pragma_Unsuppress => 0,
Pragma_Use_VADS_Size => -1,
Pragma_Validity_Checks => -1,
Pragma_Volatile => 0,
Pragma_Volatile_Components => 0,
Pragma_Warnings => -1,
Pragma_Weak_External => 0,
Unknown_Pragma => 0);
function Is_Non_Significant_Pragma_Reference (N : Node_Id) return Boolean is
P : Node_Id;
C : Int;
A : Node_Id;
begin
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;
function Is_Pragma_String_Literal (Par : Node_Id) return Boolean is
Pragn : constant Node_Id := Parent (Par);
Assoc : constant List_Id := Pragma_Argument_Associations (Pragn);
Pname : constant Name_Id := Chars (Pragn);
Argn : Natural;
N : Node_Id;
begin
Argn := 1;
N := First (Assoc);
loop
exit when N = Par;
Argn := Argn + 1;
Next (N);
end loop;
if Pname = Name_Assert then
return True;
elsif Pname = Name_Export then
return Argn > 2;
elsif Pname = Name_Ident then
return Argn = 1;
elsif Pname = Name_Import then
return Argn > 2;
elsif Pname = Name_Interface_Name then
return Argn > 1;
elsif Pname = Name_Linker_Alias then
return Argn = 2;
elsif Pname = Name_Linker_Section then
return Argn = 2;
elsif Pname = Name_Machine_Attribute then
return Argn = 2;
elsif Pname = Name_Source_File_Name then
return True;
elsif Pname = Name_Source_Reference then
return Argn = 2;
elsif Pname = Name_Title then
return True;
elsif Pname = Name_Subtitle then
return True;
else
return False;
end if;
end Is_Pragma_String_Literal;
procedure Process_Compilation_Unit_Pragmas (N : Node_Id) is
begin
declare
PA : constant List_Id := Pragmas_After (Aux_Decls_Node (N));
P : Node_Id;
begin
if Present (PA) then
P := First (PA);
while Present (P) loop
if Chars (P) = Name_Suppress_All then
Prepend_To (Context_Items (N),
Make_Pragma (Sloc (P),
Chars => Name_Suppress,
Pragma_Argument_Associations => New_List (
Make_Pragma_Argument_Association (Sloc (P),
Expression =>
Make_Identifier (Sloc (P),
Chars => Name_All_Checks)))));
exit;
end if;
Next (P);
end loop;
end if;
end;
end Process_Compilation_Unit_Pragmas;
procedure Set_Encoded_Interface_Name (E : Entity_Id; S : Node_Id) is
Str : constant String_Id := Strval (S);
Len : constant Int := String_Length (Str);
CC : Char_Code;
C : Character;
J : Int;
Hex : constant array (0 .. 15) of Character := "0123456789abcdef";
procedure Encode;
procedure Encode is
begin
Store_String_Char (Get_Char_Code ('_'));
Store_String_Char
(Get_Char_Code (Hex (Integer (CC / 2 ** 12))));
Store_String_Char
(Get_Char_Code (Hex (Integer (CC / 2 ** 8 and 16#0F#))));
Store_String_Char
(Get_Char_Code (Hex (Integer (CC / 2 ** 4 and 16#0F#))));
Store_String_Char
(Get_Char_Code (Hex (Integer (CC and 16#0F#))));
end Encode;
begin
if Len = 0
or else Get_String_Char (Str, 1) = Get_Char_Code ('*')
or else Java_VM
then
Set_Interface_Name (E, S);
else
J := 1;
loop
CC := Get_String_Char (Str, J);
exit when not In_Character_Range (CC);
C := Get_Character (CC);
exit when C /= '_' and then C /= '$'
and then C not in '0' .. '9'
and then C not in 'a' .. 'z'
and then C not in 'A' .. 'Z';
if J = Len then
Set_Interface_Name (E, S);
return;
else
J := J + 1;
end if;
end loop;
Start_String;
for J in 1 .. String_Length (Str) loop
CC := Get_String_Char (Str, J);
if not In_Character_Range (CC) then
Encode;
else
C := Get_Character (CC);
if C = '_' or else C = '$'
or else C in '0' .. '9'
or else C in 'a' .. 'z'
or else C in 'A' .. 'Z'
then
Store_String_Char (CC);
else
Encode;
end if;
end if;
end loop;
Set_Interface_Name (E,
Make_String_Literal (Sloc (S),
Strval => End_String));
end if;
end Set_Encoded_Interface_Name;
procedure Set_Unit_Name (N : Node_Id; With_Item : Node_Id) is
Pref : Node_Id;
Scop : Entity_Id;
begin
if Nkind (N) = N_Identifier
and then Nkind (With_Item) = N_Identifier
then
Set_Entity (N, Entity (With_Item));
elsif Nkind (N) = N_Selected_Component then
Change_Selected_Component_To_Expanded_Name (N);
Set_Entity (N, Entity (With_Item));
Set_Entity (Selector_Name (N), Entity (N));
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);
Pref := Prefix (Pref);
Scop := Scope (Scop);
end loop;
Set_Entity (Pref, Scop);
end if;
end Set_Unit_Name;
end Sem_Prag;