1 ------------------------------------------------------------------------------
3 -- GNAT RUN-TIME COMPONENTS --
9 -- Copyright (C) 1992-2007, Free Software Foundation, Inc. --
11 -- GNAT is free software; you can redistribute it and/or modify it under --
12 -- terms of the GNU General Public License as published by the Free Soft- --
13 -- ware Foundation; either version 2, or (at your option) any later ver- --
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
17 -- for more details. You should have received a copy of the GNU General --
18 -- Public License distributed with GNAT; see file COPYING. If not, write --
19 -- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
20 -- Boston, MA 02110-1301, USA. --
22 -- As a special exception, if other files instantiate generics from this --
23 -- unit, or you link this unit with other files to produce an executable, --
24 -- this unit does not by itself cause the resulting executable to be --
25 -- covered by the GNU General Public License. This exception does not --
26 -- however invalidate any other reasons why the executable file might be --
27 -- covered by the GNU Public License. --
29 -- GNAT was originally developed by the GNAT team at New York University. --
30 -- Extensive contributions were provided by Ada Core Technologies Inc. --
32 ------------------------------------------------------------------------------
35 with Ada.Unchecked_Conversion;
37 with System.Storage_Elements; use System.Storage_Elements;
38 with System.WCh_Con; use System.WCh_Con;
39 with System.WCh_StW; use System.WCh_StW;
41 pragma Elaborate_All (System.HTable);
43 package body Ada.Tags is
45 -----------------------
46 -- Local Subprograms --
47 -----------------------
49 function CW_Membership (Obj_Tag : Tag; Typ_Tag : Tag) return Boolean;
50 -- Given the tag of an object and the tag associated to a type, return
51 -- true if Obj is in Typ'Class.
53 function Get_External_Tag (T : Tag) return System.Address;
54 -- Returns address of a null terminated string containing the external name
56 function Is_Primary_DT (T : Tag) return Boolean;
57 -- Given a tag returns True if it has the signature of a primary dispatch
58 -- table. This is Inline_Always since it is called from other Inline_
59 -- Always subprograms where we want no out of line code to be generated.
61 function Length (Str : Cstring_Ptr) return Natural;
62 -- Length of string represented by the given pointer (treating the string
63 -- as a C-style string, which is Nul terminated).
65 function OSD (T : Tag) return Object_Specific_Data_Ptr;
66 -- Ada 2005 (AI-251): Given a pointer T to a secondary dispatch table,
67 -- retrieve the address of the record containing the Object Specific
70 function SSD (T : Tag) return Select_Specific_Data_Ptr;
71 -- Ada 2005 (AI-251): Given a pointer T to a dispatch Table, retrieves the
72 -- address of the record containing the Select Specific Data in T's TSD.
74 pragma Inline_Always (CW_Membership);
75 pragma Inline_Always (Get_External_Tag);
76 pragma Inline_Always (Is_Primary_DT);
77 pragma Inline_Always (OSD);
78 pragma Inline_Always (SSD);
80 -- Unchecked conversions
82 function To_Address is
83 new Unchecked_Conversion (Cstring_Ptr, System.Address);
85 function To_Cstring_Ptr is
86 new Unchecked_Conversion (System.Address, Cstring_Ptr);
88 -- Disable warnings on possible aliasing problem
91 new Unchecked_Conversion (Integer_Address, Tag);
93 function To_Addr_Ptr is
94 new Ada.Unchecked_Conversion (System.Address, Addr_Ptr);
96 function To_Address is
97 new Ada.Unchecked_Conversion (Tag, System.Address);
99 function To_Dispatch_Table_Ptr is
100 new Ada.Unchecked_Conversion (Tag, Dispatch_Table_Ptr);
102 function To_Dispatch_Table_Ptr is
103 new Ada.Unchecked_Conversion (System.Address, Dispatch_Table_Ptr);
105 function To_Object_Specific_Data_Ptr is
106 new Ada.Unchecked_Conversion (System.Address, Object_Specific_Data_Ptr);
108 function To_Predef_Prims_Table_Ptr is
109 new Ada.Unchecked_Conversion (System.Address, Predef_Prims_Table_Ptr);
111 function To_Tag_Ptr is
112 new Ada.Unchecked_Conversion (System.Address, Tag_Ptr);
114 function To_Type_Specific_Data_Ptr is
115 new Ada.Unchecked_Conversion (System.Address, Type_Specific_Data_Ptr);
117 ------------------------------------------------
118 -- Unchecked Conversions for other components --
119 ------------------------------------------------
122 is access function (A : System.Address) return Long_Long_Integer;
124 function To_Acc_Size is new Unchecked_Conversion (System.Address, Acc_Size);
125 -- The profile of the implicitly defined _size primitive
127 -------------------------------
128 -- Inline_Always Subprograms --
129 -------------------------------
131 -- Inline_always subprograms must be placed before their first call to
132 -- avoid defeating the frontend inlining mechanism and thus ensure the
133 -- generation of their correct debug info.
139 -- Canonical implementation of Classwide Membership corresponding to:
143 -- Each dispatch table contains a reference to a table of ancestors (stored
144 -- in the first part of the Tags_Table) and a count of the level of
145 -- inheritance "Idepth".
147 -- Obj is in Typ'Class if Typ'Tag is in the table of ancestors that are
148 -- contained in the dispatch table referenced by Obj'Tag . Knowing the
149 -- level of inheritance of both types, this can be computed in constant
150 -- time by the formula:
152 -- TSD (Obj'tag).Tags_Table (TSD (Obj'tag).Idepth - TSD (Typ'tag).Idepth)
155 function CW_Membership (Obj_Tag : Tag; Typ_Tag : Tag) return Boolean is
156 Obj_TSD_Ptr : constant Addr_Ptr :=
157 To_Addr_Ptr (To_Address (Obj_Tag) - DT_Typeinfo_Ptr_Size);
158 Typ_TSD_Ptr : constant Addr_Ptr :=
159 To_Addr_Ptr (To_Address (Typ_Tag) - DT_Typeinfo_Ptr_Size);
160 Obj_TSD : constant Type_Specific_Data_Ptr :=
161 To_Type_Specific_Data_Ptr (Obj_TSD_Ptr.all);
162 Typ_TSD : constant Type_Specific_Data_Ptr :=
163 To_Type_Specific_Data_Ptr (Typ_TSD_Ptr.all);
164 Pos : constant Integer := Obj_TSD.Idepth - Typ_TSD.Idepth;
166 return Pos >= 0 and then Obj_TSD.Tags_Table (Pos) = Typ_Tag;
169 ----------------------
170 -- Get_External_Tag --
171 ----------------------
173 function Get_External_Tag (T : Tag) return System.Address is
174 TSD_Ptr : constant Addr_Ptr :=
175 To_Addr_Ptr (To_Address (T) - DT_Typeinfo_Ptr_Size);
176 TSD : constant Type_Specific_Data_Ptr :=
177 To_Type_Specific_Data_Ptr (TSD_Ptr.all);
179 return To_Address (TSD.External_Tag);
180 end Get_External_Tag;
186 function Is_Primary_DT (T : Tag) return Boolean is
188 return DT (T).Signature = Primary_DT;
195 function OSD (T : Tag) return Object_Specific_Data_Ptr is
196 OSD_Ptr : constant Addr_Ptr :=
197 To_Addr_Ptr (To_Address (T) - DT_Typeinfo_Ptr_Size);
199 return To_Object_Specific_Data_Ptr (OSD_Ptr.all);
206 function SSD (T : Tag) return Select_Specific_Data_Ptr is
207 TSD_Ptr : constant Addr_Ptr :=
208 To_Addr_Ptr (To_Address (T) - DT_Typeinfo_Ptr_Size);
209 TSD : constant Type_Specific_Data_Ptr :=
210 To_Type_Specific_Data_Ptr (TSD_Ptr.all);
215 -------------------------
216 -- External_Tag_HTable --
217 -------------------------
219 type HTable_Headers is range 1 .. 64;
221 -- The following internal package defines the routines used for the
222 -- instantiation of a new System.HTable.Static_HTable (see below). See
223 -- spec in g-htable.ads for details of usage.
225 package HTable_Subprograms is
226 procedure Set_HT_Link (T : Tag; Next : Tag);
227 function Get_HT_Link (T : Tag) return Tag;
228 function Hash (F : System.Address) return HTable_Headers;
229 function Equal (A, B : System.Address) return Boolean;
230 end HTable_Subprograms;
232 package External_Tag_HTable is new System.HTable.Static_HTable (
233 Header_Num => HTable_Headers,
234 Element => Dispatch_Table,
237 Set_Next => HTable_Subprograms.Set_HT_Link,
238 Next => HTable_Subprograms.Get_HT_Link,
239 Key => System.Address,
240 Get_Key => Get_External_Tag,
241 Hash => HTable_Subprograms.Hash,
242 Equal => HTable_Subprograms.Equal);
244 ------------------------
245 -- HTable_Subprograms --
246 ------------------------
248 -- Bodies of routines for hash table instantiation
250 package body HTable_Subprograms is
256 function Equal (A, B : System.Address) return Boolean is
257 Str1 : constant Cstring_Ptr := To_Cstring_Ptr (A);
258 Str2 : constant Cstring_Ptr := To_Cstring_Ptr (B);
262 if Str1 (J) /= Str2 (J) then
264 elsif Str1 (J) = ASCII.NUL then
276 function Get_HT_Link (T : Tag) return Tag is
277 TSD_Ptr : constant Addr_Ptr :=
278 To_Addr_Ptr (To_Address (T) - DT_Typeinfo_Ptr_Size);
279 TSD : constant Type_Specific_Data_Ptr :=
280 To_Type_Specific_Data_Ptr (TSD_Ptr.all);
289 function Hash (F : System.Address) return HTable_Headers is
290 function H is new System.HTable.Hash (HTable_Headers);
291 Str : constant Cstring_Ptr := To_Cstring_Ptr (F);
292 Res : constant HTable_Headers := H (Str (1 .. Length (Str)));
301 procedure Set_HT_Link (T : Tag; Next : Tag) is
302 TSD_Ptr : constant Addr_Ptr :=
303 To_Addr_Ptr (To_Address (T) - DT_Typeinfo_Ptr_Size);
304 TSD : constant Type_Specific_Data_Ptr :=
305 To_Type_Specific_Data_Ptr (TSD_Ptr.all);
310 end HTable_Subprograms;
316 function Base_Address (This : System.Address) return System.Address is
318 return This - Offset_To_Top (This);
326 (This : System.Address;
327 T : Tag) return System.Address
329 Iface_Table : Interface_Data_Ptr;
330 Obj_Base : System.Address;
331 Obj_DT : Dispatch_Table_Ptr;
335 if System."=" (This, System.Null_Address) then
336 return System.Null_Address;
339 Obj_Base := Base_Address (This);
340 Obj_DT_Tag := To_Tag_Ptr (Obj_Base).all;
341 Obj_DT := DT (To_Tag_Ptr (Obj_Base).all);
342 Iface_Table := To_Type_Specific_Data_Ptr (Obj_DT.TSD).Interfaces_Table;
344 if Iface_Table /= null then
345 for Id in 1 .. Iface_Table.Nb_Ifaces loop
346 if Iface_Table.Ifaces_Table (Id).Iface_Tag = T then
348 -- Case of Static value of Offset_To_Top
350 if Iface_Table.Ifaces_Table (Id).Static_Offset_To_Top then
351 Obj_Base := Obj_Base +
352 Iface_Table.Ifaces_Table (Id).Offset_To_Top_Value;
354 -- Otherwise we call the function generated by the expander
355 -- to provide us with this value
358 Obj_Base := Obj_Base +
359 Iface_Table.Ifaces_Table (Id).Offset_To_Top_Func.all
368 -- Check if T is an immediate ancestor. This is required to handle
369 -- conversion of class-wide interfaces to tagged types.
371 if CW_Membership (Obj_DT_Tag, T) then
375 -- If the object does not implement the interface we must raise CE
377 raise Constraint_Error with "invalid interface conversion";
384 function DT (T : Tag) return Dispatch_Table_Ptr is
385 Offset : constant SSE.Storage_Offset :=
386 To_Dispatch_Table_Ptr (T).Prims_Ptr'Position;
388 return To_Dispatch_Table_Ptr (To_Address (T) - Offset);
395 -- Canonical implementation of Classwide Membership corresponding to:
397 -- Obj in Iface'Class
399 -- Each dispatch table contains a table with the tags of all the
400 -- implemented interfaces.
402 -- Obj is in Iface'Class if Iface'Tag is found in the table of interfaces
403 -- that are contained in the dispatch table referenced by Obj'Tag.
405 function IW_Membership (This : System.Address; T : Tag) return Boolean is
406 Iface_Table : Interface_Data_Ptr;
407 Obj_Base : System.Address;
408 Obj_DT : Dispatch_Table_Ptr;
409 Obj_TSD : Type_Specific_Data_Ptr;
412 Obj_Base := Base_Address (This);
413 Obj_DT := DT (To_Tag_Ptr (Obj_Base).all);
414 Obj_TSD := To_Type_Specific_Data_Ptr (Obj_DT.TSD);
415 Iface_Table := Obj_TSD.Interfaces_Table;
417 if Iface_Table /= null then
418 for Id in 1 .. Iface_Table.Nb_Ifaces loop
419 if Iface_Table.Ifaces_Table (Id).Iface_Tag = T then
425 -- Look for the tag in the ancestor tags table. This is required for:
426 -- Iface_CW in Typ'Class
428 for Id in 0 .. Obj_TSD.Idepth loop
429 if Obj_TSD.Tags_Table (Id) = T then
441 function Descendant_Tag (External : String; Ancestor : Tag) return Tag is
442 Int_Tag : constant Tag := Internal_Tag (External);
445 if not Is_Descendant_At_Same_Level (Int_Tag, Ancestor) then
456 function Expanded_Name (T : Tag) return String is
457 Result : Cstring_Ptr;
459 TSD : Type_Specific_Data_Ptr;
466 TSD_Ptr := To_Addr_Ptr (To_Address (T) - DT_Typeinfo_Ptr_Size);
467 TSD := To_Type_Specific_Data_Ptr (TSD_Ptr.all);
468 Result := TSD.Expanded_Name;
469 return Result (1 .. Length (Result));
476 function External_Tag (T : Tag) return String is
477 Result : Cstring_Ptr;
479 TSD : Type_Specific_Data_Ptr;
486 TSD_Ptr := To_Addr_Ptr (To_Address (T) - DT_Typeinfo_Ptr_Size);
487 TSD := To_Type_Specific_Data_Ptr (TSD_Ptr.all);
488 Result := TSD.External_Tag;
489 return Result (1 .. Length (Result));
492 ---------------------
493 -- Get_Entry_Index --
494 ---------------------
496 function Get_Entry_Index (T : Tag; Position : Positive) return Positive is
498 return SSD (T).SSD_Table (Position).Index;
501 ----------------------
502 -- Get_Prim_Op_Kind --
503 ----------------------
505 function Get_Prim_Op_Kind
507 Position : Positive) return Prim_Op_Kind
510 return SSD (T).SSD_Table (Position).Kind;
511 end Get_Prim_Op_Kind;
513 ----------------------
514 -- Get_Offset_Index --
515 ----------------------
517 function Get_Offset_Index
519 Position : Positive) return Positive
522 if Is_Primary_DT (T) then
525 return OSD (T).OSD_Table (Position);
527 end Get_Offset_Index;
533 function Get_RC_Offset (T : Tag) return SSE.Storage_Offset is
534 TSD_Ptr : constant Addr_Ptr :=
535 To_Addr_Ptr (To_Address (T) - DT_Typeinfo_Ptr_Size);
536 TSD : constant Type_Specific_Data_Ptr :=
537 To_Type_Specific_Data_Ptr (TSD_Ptr.all);
539 return TSD.RC_Offset;
542 ---------------------
543 -- Get_Tagged_Kind --
544 ---------------------
546 function Get_Tagged_Kind (T : Tag) return Tagged_Kind is
548 return DT (T).Tag_Kind;
551 -----------------------------
552 -- Interface_Ancestor_Tags --
553 -----------------------------
555 function Interface_Ancestor_Tags (T : Tag) return Tag_Array is
556 TSD_Ptr : constant Addr_Ptr :=
557 To_Addr_Ptr (To_Address (T) - DT_Typeinfo_Ptr_Size);
558 TSD : constant Type_Specific_Data_Ptr :=
559 To_Type_Specific_Data_Ptr (TSD_Ptr.all);
560 Iface_Table : constant Interface_Data_Ptr := TSD.Interfaces_Table;
563 if Iface_Table = null then
565 Table : Tag_Array (1 .. 0);
571 Table : Tag_Array (1 .. Iface_Table.Nb_Ifaces);
573 for J in 1 .. Iface_Table.Nb_Ifaces loop
574 Table (J) := Iface_Table.Ifaces_Table (J).Iface_Tag;
580 end Interface_Ancestor_Tags;
586 -- Internal tags have the following format:
587 -- "Internal tag at 16#ADDRESS#: <full-name-of-tagged-type>"
589 Internal_Tag_Header : constant String := "Internal tag at ";
590 Header_Separator : constant Character := '#';
592 function Internal_Tag (External : String) return Tag is
593 Ext_Copy : aliased String (External'First .. External'Last + 1);
597 -- Handle locally defined tagged types
599 if External'Length > Internal_Tag_Header'Length
601 External (External'First ..
602 External'First + Internal_Tag_Header'Length - 1)
603 = Internal_Tag_Header
606 Addr_First : constant Natural :=
607 External'First + Internal_Tag_Header'Length;
609 Addr : Integer_Address;
612 -- Search the second separator (#) to identify the address
614 Addr_Last := Addr_First;
617 while Addr_Last <= External'Last
618 and then External (Addr_Last) /= Header_Separator
620 Addr_Last := Addr_Last + 1;
623 -- Skip the first separator
626 Addr_Last := Addr_Last + 1;
630 if Addr_Last <= External'Last then
632 Integer_Address'Value (External (Addr_First .. Addr_Last));
633 return To_Tag (Addr);
637 -- Handle library-level tagged types
640 -- Make a copy of the string representing the external tag with
641 -- a null at the end.
643 Ext_Copy (External'Range) := External;
644 Ext_Copy (Ext_Copy'Last) := ASCII.NUL;
645 Res := External_Tag_HTable.Get (Ext_Copy'Address);
650 Msg1 : constant String := "unknown tagged type: ";
651 Msg2 : String (1 .. Msg1'Length + External'Length);
654 Msg2 (1 .. Msg1'Length) := Msg1;
655 Msg2 (Msg1'Length + 1 .. Msg1'Length + External'Length) :=
657 Ada.Exceptions.Raise_Exception (Tag_Error'Identity, Msg2);
664 ---------------------------------
665 -- Is_Descendant_At_Same_Level --
666 ---------------------------------
668 function Is_Descendant_At_Same_Level
670 Ancestor : Tag) return Boolean
672 D_TSD_Ptr : constant Addr_Ptr :=
673 To_Addr_Ptr (To_Address (Descendant)
674 - DT_Typeinfo_Ptr_Size);
675 A_TSD_Ptr : constant Addr_Ptr :=
676 To_Addr_Ptr (To_Address (Ancestor) - DT_Typeinfo_Ptr_Size);
677 D_TSD : constant Type_Specific_Data_Ptr :=
678 To_Type_Specific_Data_Ptr (D_TSD_Ptr.all);
679 A_TSD : constant Type_Specific_Data_Ptr :=
680 To_Type_Specific_Data_Ptr (A_TSD_Ptr.all);
683 return CW_Membership (Descendant, Ancestor)
684 and then D_TSD.Access_Level = A_TSD.Access_Level;
685 end Is_Descendant_At_Same_Level;
691 function Length (Str : Cstring_Ptr) return Natural is
696 while Str (Len) /= ASCII.Nul loop
707 function Offset_To_Top
708 (This : System.Address) return SSE.Storage_Offset
710 Tag_Size : constant SSE.Storage_Count :=
711 SSE.Storage_Count (1 * (Standard'Address_Size / System.Storage_Unit));
713 type Storage_Offset_Ptr is access SSE.Storage_Offset;
714 function To_Storage_Offset_Ptr is
715 new Unchecked_Conversion (System.Address, Storage_Offset_Ptr);
717 Curr_DT : Dispatch_Table_Ptr;
720 Curr_DT := DT (To_Tag_Ptr (This).all);
722 if Curr_DT.Offset_To_Top = SSE.Storage_Offset'Last then
723 return To_Storage_Offset_Ptr (This + Tag_Size).all;
725 return Curr_DT.Offset_To_Top;
734 (Obj : System.Address;
735 T : Tag) return SSE.Storage_Count
737 Parent_Slot : constant Positive := 1;
738 -- The tag of the parent is always in the first slot of the table of
741 Size_Slot : constant Positive := 1;
742 -- The pointer to the _size primitive is always in the first slot of
743 -- the dispatch table.
745 TSD_Ptr : constant Addr_Ptr :=
746 To_Addr_Ptr (To_Address (T) - DT_Typeinfo_Ptr_Size);
747 TSD : constant Type_Specific_Data_Ptr :=
748 To_Type_Specific_Data_Ptr (TSD_Ptr.all);
749 -- Pointer to the TSD
751 Parent_Tag : constant Tag := TSD.Tags_Table (Parent_Slot);
752 Parent_Predef_Prims_Ptr : constant Addr_Ptr :=
753 To_Addr_Ptr (To_Address (Parent_Tag)
754 - DT_Predef_Prims_Offset);
755 Parent_Predef_Prims : constant Predef_Prims_Table_Ptr :=
756 To_Predef_Prims_Table_Ptr
757 (Parent_Predef_Prims_Ptr.all);
759 -- The tag of the parent type through the dispatch table and its
760 -- Predef_Prims field.
762 F : constant Acc_Size :=
763 To_Acc_Size (Parent_Predef_Prims (Size_Slot));
764 -- Access to the _size primitive of the parent
767 -- Here we compute the size of the _parent field of the object
769 return SSE.Storage_Count (F.all (Obj));
776 function Parent_Tag (T : Tag) return Tag is
778 TSD : Type_Specific_Data_Ptr;
785 TSD_Ptr := To_Addr_Ptr (To_Address (T) - DT_Typeinfo_Ptr_Size);
786 TSD := To_Type_Specific_Data_Ptr (TSD_Ptr.all);
788 -- The Parent_Tag of a root-level tagged type is defined to be No_Tag.
789 -- The first entry in the Ancestors_Tags array will be null for such
790 -- a type, but it's better to be explicit about returning No_Tag in
793 if TSD.Idepth = 0 then
796 return TSD.Tags_Table (1);
804 procedure Register_Tag (T : Tag) is
806 External_Tag_HTable.Set (T);
809 ---------------------
810 -- Set_Entry_Index --
811 ---------------------
813 procedure Set_Entry_Index
819 SSD (T).SSD_Table (Position).Index := Value;
822 -----------------------
823 -- Set_Offset_To_Top --
824 -----------------------
826 procedure Set_Offset_To_Top
827 (This : System.Address;
830 Offset_Value : SSE.Storage_Offset;
831 Offset_Func : Offset_To_Top_Function_Ptr)
833 Prim_DT : Dispatch_Table_Ptr;
834 Sec_Base : System.Address;
835 Sec_DT : Dispatch_Table_Ptr;
836 Iface_Table : Interface_Data_Ptr;
839 -- Save the offset to top field in the secondary dispatch table
841 if Offset_Value /= 0 then
842 Sec_Base := This + Offset_Value;
843 Sec_DT := DT (To_Tag_Ptr (Sec_Base).all);
846 Sec_DT.Offset_To_Top := Offset_Value;
848 Sec_DT.Offset_To_Top := SSE.Storage_Offset'Last;
852 -- "This" points to the primary DT and we must save Offset_Value in
853 -- the Offset_To_Top field of the corresponding secondary dispatch
856 Prim_DT := DT (To_Tag_Ptr (This).all);
857 Iface_Table := To_Type_Specific_Data_Ptr (Prim_DT.TSD).Interfaces_Table;
859 -- Save Offset_Value in the table of interfaces of the primary DT.
860 -- This data will be used by the subprogram "Displace" to give support
861 -- to backward abstract interface type conversions.
863 -- Register the offset in the table of interfaces
865 if Iface_Table /= null then
866 for Id in 1 .. Iface_Table.Nb_Ifaces loop
867 if Iface_Table.Ifaces_Table (Id).Iface_Tag = Interface_T then
868 Iface_Table.Ifaces_Table (Id).Static_Offset_To_Top :=
872 Iface_Table.Ifaces_Table (Id).Offset_To_Top_Value
875 Iface_Table.Ifaces_Table (Id).Offset_To_Top_Func
884 -- If we arrive here there is some error in the run-time data structure
887 end Set_Offset_To_Top;
889 ----------------------
890 -- Set_Prim_Op_Kind --
891 ----------------------
893 procedure Set_Prim_Op_Kind
896 Value : Prim_Op_Kind)
899 SSD (T).SSD_Table (Position).Kind := Value;
900 end Set_Prim_Op_Kind;
902 ------------------------
903 -- Wide_Expanded_Name --
904 ------------------------
906 WC_Encoding : Character;
907 pragma Import (C, WC_Encoding, "__gl_wc_encoding");
908 -- Encoding method for source, as exported by binder
910 function Wide_Expanded_Name (T : Tag) return Wide_String is
912 return String_To_Wide_String
913 (Expanded_Name (T), Get_WC_Encoding_Method (WC_Encoding));
914 end Wide_Expanded_Name;
916 -----------------------------
917 -- Wide_Wide_Expanded_Name --
918 -----------------------------
920 function Wide_Wide_Expanded_Name (T : Tag) return Wide_Wide_String is
922 return String_To_Wide_Wide_String
923 (Expanded_Name (T), Get_WC_Encoding_Method (WC_Encoding));
924 end Wide_Wide_Expanded_Name;