1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1996-2005 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, 59 Temple Place - Suite 330, Boston, --
20 -- MA 02111-1307, USA. --
22 -- GNAT was originally developed by the GNAT team at New York University. --
23 -- Extensive contributions were provided by Ada Core Technologies Inc. --
25 ------------------------------------------------------------------------------
27 with Alloc; use Alloc;
28 with Atree; use Atree;
29 with Debug; use Debug;
30 with Einfo; use Einfo;
31 with Namet; use Namet;
32 with Nlists; use Nlists;
33 with Nmake; use Nmake;
35 with Output; use Output;
36 with Sem_Eval; use Sem_Eval;
37 with Sem_Util; use Sem_Util;
38 with Sinfo; use Sinfo;
39 with Snames; use Snames;
40 with Stand; use Stand;
41 with Stringt; use Stringt;
43 with Urealp; use Urealp;
45 package body Exp_Dbug is
47 -- The following table is used to queue up the entities passed as
48 -- arguments to Qualify_Entity_Names for later processing when
49 -- Qualify_All_Entity_Names is called.
51 package Name_Qualify_Units is new Table.Table (
52 Table_Component_Type => Node_Id,
53 Table_Index_Type => Nat,
55 Table_Initial => Alloc.Name_Qualify_Units_Initial,
56 Table_Increment => Alloc.Name_Qualify_Units_Increment,
57 Table_Name => "Name_Qualify_Units");
59 --------------------------------
60 -- Use of Qualification Flags --
61 --------------------------------
63 -- There are two flags used to keep track of qualification of entities
65 -- Has_Fully_Qualified_Name
68 -- The difference between these is as follows. Has_Qualified_Name is
69 -- set to indicate that the name has been qualified as required by the
70 -- spec of this package. As described there, this may involve the full
71 -- qualification for the name, but for some entities, notably procedure
72 -- local variables, this full qualification is not required.
74 -- The flag Has_Fully_Qualified_Name is set if indeed the name has been
75 -- fully qualified in the Ada sense. If Has_Fully_Qualified_Name is set,
76 -- then Has_Qualified_Name is also set, but the other way round is not
79 -- Consider the following example:
86 -- Here B is a procedure local variable, so it does not need fully
87 -- qualification. The flag Has_Qualified_Name will be set on the
88 -- first attempt to qualify B, to indicate that the job is done
89 -- and need not be redone.
91 -- But Y is qualified as x__y, since procedures are always fully
92 -- qualified, so the first time that an attempt is made to qualify
93 -- the name y, it will be replaced by x__y, and both flags are set.
95 -- Why the two flags? Well there are cases where we derive type names
96 -- from object names. As noted in the spec, type names are always
97 -- fully qualified. Suppose for example that the backend has to build
98 -- a padded type for variable B. then it will construct the PAD name
99 -- from B, but it requires full qualification, so the fully qualified
100 -- type name will be x__b___PAD. The two flags allow the circuit for
101 -- building this name to realize efficiently that b needs further
108 -- The string defined here (and its associated length) is used to
109 -- gather the homonym string that will be appended to Name_Buffer
110 -- when the name is complete. Strip_Suffixes appends to this string
111 -- as does Append_Homonym_Number, and Output_Homonym_Numbers_Suffix
112 -- appends the string to the end of Name_Buffer.
114 Homonym_Numbers : String (1 .. 256);
115 Homonym_Len : Natural := 0;
117 ----------------------
118 -- Local Procedures --
119 ----------------------
121 procedure Add_Uint_To_Buffer (U : Uint);
122 -- Add image of universal integer to Name_Buffer, updating Name_Len
124 procedure Add_Real_To_Buffer (U : Ureal);
125 -- Add nnn_ddd to Name_Buffer, where nnn and ddd are integer values of
126 -- the normalized numerator and denominator of the given real value.
128 procedure Append_Homonym_Number (E : Entity_Id);
129 -- If the entity E has homonyms in the same scope, then make an entry
130 -- in the Homonym_Numbers array, bumping Homonym_Count accordingly.
132 function Bounds_Match_Size (E : Entity_Id) return Boolean;
133 -- Determine whether the bounds of E match the size of the type. This is
134 -- used to determine whether encoding is required for a discrete type.
136 procedure Output_Homonym_Numbers_Suffix;
137 -- If homonym numbers are stored, then output them into Name_Buffer.
139 procedure Prepend_String_To_Buffer (S : String);
140 -- Prepend given string to the contents of the string buffer, updating
141 -- the value in Name_Len (i.e. string is added at start of buffer).
143 procedure Prepend_Uint_To_Buffer (U : Uint);
144 -- Prepend image of universal integer to Name_Buffer, updating Name_Len
146 procedure Qualify_Entity_Name (Ent : Entity_Id);
147 -- If not already done, replaces the Chars field of the given entity
148 -- with the appropriate fully qualified name.
150 procedure Strip_Suffixes (BNPE_Suffix_Found : in out Boolean);
151 -- Given an qualified entity name in Name_Buffer, remove any plain X or
152 -- X{nb} qualification suffix. The contents of Name_Buffer is not changed
153 -- but Name_Len may be adjusted on return to remove the suffix. If a
154 -- BNPE suffix is found and stripped, then BNPE_Suffix_Found is set to
155 -- True. If no suffix is found, then BNPE_Suffix_Found is not modified.
156 -- This routine also searches for a homonym suffix, and if one is found
157 -- it is also stripped, and the entries are added to the global homonym
158 -- list (Homonym_Numbers) so that they can later be put back.
160 ------------------------
161 -- Add_Real_To_Buffer --
162 ------------------------
164 procedure Add_Real_To_Buffer (U : Ureal) is
166 Add_Uint_To_Buffer (Norm_Num (U));
167 Add_Str_To_Name_Buffer ("_");
168 Add_Uint_To_Buffer (Norm_Den (U));
169 end Add_Real_To_Buffer;
171 ------------------------
172 -- Add_Uint_To_Buffer --
173 ------------------------
175 procedure Add_Uint_To_Buffer (U : Uint) is
178 Add_Uint_To_Buffer (-U);
179 Add_Char_To_Name_Buffer ('m');
181 UI_Image (U, Decimal);
182 Add_Str_To_Name_Buffer (UI_Image_Buffer (1 .. UI_Image_Length));
184 end Add_Uint_To_Buffer;
186 ---------------------------
187 -- Append_Homonym_Number --
188 ---------------------------
190 procedure Append_Homonym_Number (E : Entity_Id) is
192 procedure Add_Nat_To_H (Nr : Nat);
193 -- Little procedure to append Nr to Homonym_Numbers
199 procedure Add_Nat_To_H (Nr : Nat) is
202 Add_Nat_To_H (Nr / 10);
205 Homonym_Len := Homonym_Len + 1;
206 Homonym_Numbers (Homonym_Len) :=
207 Character'Val (Nr mod 10 + Character'Pos ('0'));
210 -- Start of processing for Append_Homonym_Number
213 if Has_Homonym (E) then
215 H : Entity_Id := Homonym (E);
219 while Present (H) loop
220 if Scope (H) = Scope (E) then
227 if Homonym_Len > 0 then
228 Homonym_Len := Homonym_Len + 1;
229 Homonym_Numbers (Homonym_Len) := '_';
235 end Append_Homonym_Number;
237 -----------------------
238 -- Bounds_Match_Size --
239 -----------------------
241 function Bounds_Match_Size (E : Entity_Id) return Boolean is
245 if not Is_OK_Static_Subtype (E) then
248 elsif Is_Integer_Type (E)
249 and then Subtypes_Statically_Match (E, Base_Type (E))
253 -- Here we check if the static bounds match the natural size, which
254 -- is the size passed through with the debugging information. This
255 -- is the Esize rounded up to 8, 16, 32 or 64 as appropriate.
259 Umark : constant Uintp.Save_Mark := Uintp.Mark;
263 if Esize (E) <= 8 then
265 elsif Esize (E) <= 16 then
267 elsif Esize (E) <= 32 then
273 if Is_Modular_Integer_Type (E) or else Is_Enumeration_Type (E) then
275 Expr_Rep_Value (Type_Low_Bound (E)) = 0
277 2 ** Siz - Expr_Rep_Value (Type_High_Bound (E)) = 1;
281 Expr_Rep_Value (Type_Low_Bound (E)) + 2 ** (Siz - 1) = 0
283 2 ** (Siz - 1) - Expr_Rep_Value (Type_High_Bound (E)) = 1;
290 end Bounds_Match_Size;
292 --------------------------------
293 -- Debug_Renaming_Declaration --
294 --------------------------------
296 function Debug_Renaming_Declaration (N : Node_Id) return Node_Id is
297 Loc : constant Source_Ptr := Sloc (N);
298 Ent : constant Node_Id := Defining_Entity (N);
299 Nam : constant Node_Id := Name (N);
307 function Output_Subscript (N : Node_Id; S : String) return Boolean;
308 -- Outputs a single subscript value as ?nnn (subscript is compile
309 -- time known value with value nnn) or as ?e (subscript is local
310 -- constant with name e), where S supplies the proper string to
311 -- use for ?. Returns False if the subscript is not of an appropriate
312 -- type to output in one of these two forms. The result is prepended
313 -- to the name stored in Name_Buffer.
315 ----------------------
316 -- Output_Subscript --
317 ----------------------
319 function Output_Subscript (N : Node_Id; S : String) return Boolean is
321 if Compile_Time_Known_Value (N) then
322 Prepend_Uint_To_Buffer (Expr_Value (N));
324 elsif Nkind (N) = N_Identifier
325 and then Scope (Entity (N)) = Scope (Ent)
326 and then Ekind (Entity (N)) = E_Constant
328 Prepend_String_To_Buffer (Get_Name_String (Chars (Entity (N))));
334 Prepend_String_To_Buffer (S);
336 end Output_Subscript;
338 -- Start of processing for Debug_Renaming_Declaration
341 if not Comes_From_Source (N)
342 and then not Needs_Debug_Info (Ent)
347 -- Prepare entity name for type declaration
349 Get_Name_String (Chars (Ent));
352 when N_Object_Renaming_Declaration =>
353 Add_Str_To_Name_Buffer ("___XR");
355 when N_Exception_Renaming_Declaration =>
356 Add_Str_To_Name_Buffer ("___XRE");
358 when N_Package_Renaming_Declaration =>
359 Add_Str_To_Name_Buffer ("___XRP");
361 -- If it is a child unit create a fully qualified name,
362 -- to disambiguate multiple child units with the same
363 -- name and different parents.
365 if Is_Child_Unit (Ent) then
366 Prepend_String_To_Buffer ("__");
367 Prepend_String_To_Buffer
368 (Get_Name_String (Chars (Scope (Ent))));
377 -- Get renamed entity and compute suffix
387 when N_Expanded_Name =>
389 -- The entity field for an N_Expanded_Name is on the
390 -- expanded name node itself, so we are done here too.
394 when N_Selected_Component =>
395 Prepend_String_To_Buffer
396 (Get_Name_String (Chars (Selector_Name (Ren))));
397 Prepend_String_To_Buffer ("XR");
400 when N_Indexed_Component =>
402 X : Node_Id := Last (Expressions (Ren));
405 while Present (X) loop
406 if not Output_Subscript (X, "XS") then
407 Set_Materialize_Entity (Ent);
419 Typ := Etype (First_Index (Etype (Nam)));
421 if not Output_Subscript (Type_High_Bound (Typ), "XS") then
422 Set_Materialize_Entity (Ent);
426 if not Output_Subscript (Type_Low_Bound (Typ), "XL") then
427 Set_Materialize_Entity (Ent);
433 when N_Explicit_Dereference =>
434 Prepend_String_To_Buffer ("XA");
437 -- For now, anything else simply results in no translation
440 Set_Materialize_Entity (Ent);
445 Prepend_String_To_Buffer ("___XE");
447 -- For now, the literal name contains only the suffix. The Entity_Id
448 -- value for the name is used to create a link from this literal name
449 -- to the renamed entity using the Debug_Renaming_Link field. Then the
450 -- Qualify_Entity_Name procedure uses this link to create the proper
451 -- fully qualified name.
453 -- The reason we do things this way is that we really need to copy the
454 -- qualification of the renamed entity, and it is really much easier to
455 -- do this after the renamed entity has itself been fully qualified.
457 Lit := Make_Defining_Identifier (Loc, Chars => Name_Enter);
458 Set_Debug_Renaming_Link (Lit, Entity (Ren));
460 -- Return the appropriate enumeration type
462 Def := Make_Defining_Identifier (Loc, Chars => Rnm);
464 Make_Full_Type_Declaration (Loc,
465 Defining_Identifier => Def,
467 Make_Enumeration_Type_Definition (Loc,
468 Literals => New_List (Lit)));
470 Set_Needs_Debug_Info (Def);
471 Set_Needs_Debug_Info (Lit);
473 Set_Discard_Names (Defining_Identifier (Res));
476 -- If we get an exception, just figure it is a case that we cannot
477 -- successfully handle using our current approach, since this is
478 -- only for debugging, no need to take the compilation with us!
482 return Make_Null_Statement (Loc);
483 end Debug_Renaming_Declaration;
485 ----------------------
486 -- Get_Encoded_Name --
487 ----------------------
489 -- Note: see spec for details on encodings
491 procedure Get_Encoded_Name (E : Entity_Id) is
492 Has_Suffix : Boolean;
495 Get_Name_String (Chars (E));
497 -- Nothing to do if we do not have a type
501 -- Or if this is an enumeration base type
503 or else (Is_Enumeration_Type (E)
504 and then E = Base_Type (E))
506 -- Or if this is a dummy type for a renaming
508 or else (Name_Len >= 3 and then
509 Name_Buffer (Name_Len - 2 .. Name_Len) = "_XR")
511 or else (Name_Len >= 4 and then
512 (Name_Buffer (Name_Len - 3 .. Name_Len) = "_XRE"
514 Name_Buffer (Name_Len - 3 .. Name_Len) = "_XRP"))
516 -- For all these cases, just return the name unchanged
519 Name_Buffer (Name_Len + 1) := ASCII.Nul;
527 if Is_Fixed_Point_Type (E) then
528 Get_External_Name_With_Suffix (E, "XF_");
529 Add_Real_To_Buffer (Delta_Value (E));
531 if Small_Value (E) /= Delta_Value (E) then
532 Add_Str_To_Name_Buffer ("_");
533 Add_Real_To_Buffer (Small_Value (E));
536 -- Vax floating-point case
538 elsif Vax_Float (E) then
540 if Digits_Value (Base_Type (E)) = 6 then
541 Get_External_Name_With_Suffix (E, "XFF");
543 elsif Digits_Value (Base_Type (E)) = 9 then
544 Get_External_Name_With_Suffix (E, "XFF");
547 pragma Assert (Digits_Value (Base_Type (E)) = 15);
548 Get_External_Name_With_Suffix (E, "XFG");
551 -- Discrete case where bounds do not match size
553 elsif Is_Discrete_Type (E)
554 and then not Bounds_Match_Size (E)
556 if Has_Biased_Representation (E) then
557 Get_External_Name_With_Suffix (E, "XB");
559 Get_External_Name_With_Suffix (E, "XD");
563 Lo : constant Node_Id := Type_Low_Bound (E);
564 Hi : constant Node_Id := Type_High_Bound (E);
566 Lo_Con : constant Boolean := Compile_Time_Known_Value (Lo);
567 Hi_Con : constant Boolean := Compile_Time_Known_Value (Hi);
569 Lo_Discr : constant Boolean :=
570 Nkind (Lo) = N_Identifier
572 Ekind (Entity (Lo)) = E_Discriminant;
574 Hi_Discr : constant Boolean :=
575 Nkind (Hi) = N_Identifier
577 Ekind (Entity (Hi)) = E_Discriminant;
579 Lo_Encode : constant Boolean := Lo_Con or Lo_Discr;
580 Hi_Encode : constant Boolean := Hi_Con or Hi_Discr;
583 if Lo_Encode or Hi_Encode then
586 Add_Str_To_Name_Buffer ("LU_");
588 Add_Str_To_Name_Buffer ("L_");
591 Add_Str_To_Name_Buffer ("U_");
595 Add_Uint_To_Buffer (Expr_Rep_Value (Lo));
597 Get_Name_String_And_Append (Chars (Entity (Lo)));
600 if Lo_Encode and Hi_Encode then
601 Add_Str_To_Name_Buffer ("__");
605 Add_Uint_To_Buffer (Expr_Rep_Value (Hi));
607 Get_Name_String_And_Append (Chars (Entity (Hi)));
612 -- For all other cases, the encoded name is the normal type name
616 Get_External_Name (E, Has_Suffix);
619 if Debug_Flag_B and then Has_Suffix then
620 Write_Str ("**** type ");
621 Write_Name (Chars (E));
622 Write_Str (" is encoded as ");
623 Write_Str (Name_Buffer (1 .. Name_Len));
627 Name_Buffer (Name_Len + 1) := ASCII.NUL;
628 end Get_Encoded_Name;
630 -----------------------
631 -- Get_External_Name --
632 -----------------------
634 procedure Get_External_Name (Entity : Entity_Id; Has_Suffix : Boolean) is
635 E : Entity_Id := Entity;
638 procedure Get_Qualified_Name_And_Append (Entity : Entity_Id);
639 -- Appends fully qualified name of given entity to Name_Buffer
641 -----------------------------------
642 -- Get_Qualified_Name_And_Append --
643 -----------------------------------
645 procedure Get_Qualified_Name_And_Append (Entity : Entity_Id) is
647 -- If the entity is a compilation unit, its scope is Standard,
648 -- there is no outer scope, and the no further qualification
651 -- If the front end has already computed a fully qualified name,
652 -- then it is also the case that no further qualification is
655 if Present (Scope (Scope (Entity)))
656 and then not Has_Fully_Qualified_Name (Entity)
658 Get_Qualified_Name_And_Append (Scope (Entity));
659 Add_Str_To_Name_Buffer ("__");
660 Get_Name_String_And_Append (Chars (Entity));
661 Append_Homonym_Number (Entity);
664 Get_Name_String_And_Append (Chars (Entity));
667 end Get_Qualified_Name_And_Append;
669 -- Start of processing for Get_External_Name
674 -- If this is a child unit, we want the child
676 if Nkind (E) = N_Defining_Program_Unit_Name then
677 E := Defining_Identifier (Entity);
682 -- Case of interface name being used
684 if (Kind = E_Procedure or else
685 Kind = E_Function or else
686 Kind = E_Constant or else
687 Kind = E_Variable or else
689 and then Present (Interface_Name (E))
690 and then No (Address_Clause (E))
691 and then not Has_Suffix
693 Add_String_To_Name_Buffer (Strval (Interface_Name (E)));
695 -- All other cases besides the interface name case
698 -- If this is a library level subprogram (i.e. a subprogram that is a
699 -- compilation unit other than a subunit), then we prepend _ada_ to
700 -- ensure distinctions required as described in the spec.
701 -- Check explicitly for child units, because those are not flagged
702 -- as Compilation_Units by lib. Should they be ???
705 and then (Is_Compilation_Unit (E) or Is_Child_Unit (E))
706 and then not Has_Suffix
708 Add_Str_To_Name_Buffer ("_ada_");
711 -- If the entity is a subprogram instance that is not a compilation
712 -- unit, generate the name of the original Ada entity, which is the
715 if Is_Generic_Instance (E)
716 and then Is_Subprogram (E)
717 and then not Is_Compilation_Unit (Scope (E))
718 and then (Ekind (Scope (E)) = E_Package
720 Ekind (Scope (E)) = E_Package_Body)
721 and then Present (Related_Instance (Scope (E)))
723 E := Related_Instance (Scope (E));
726 Get_Qualified_Name_And_Append (E);
729 Name_Buffer (Name_Len + 1) := ASCII.Nul;
730 end Get_External_Name;
732 -----------------------------------
733 -- Get_External_Name_With_Suffix --
734 -----------------------------------
736 procedure Get_External_Name_With_Suffix
740 Has_Suffix : constant Boolean := (Suffix /= "");
741 use type Opt.Operating_Mode_Type;
744 if Opt.Operating_Mode /= Opt.Generate_Code then
746 -- If we are not in code generation mode, we still may call this
747 -- procedure from Back_End (more specifically - from gigi for doing
748 -- type representation annotation or some representation-specific
749 -- checks). But in this mode there is no need to mess with external
750 -- names. Furthermore, the call causes difficulties in this case
751 -- because the string representing the homonym number is not
752 -- correctly reset as a part of the call to
753 -- Output_Homonym_Numbers_Suffix (which is not called in gigi)
758 Get_External_Name (Entity, Has_Suffix);
761 Add_Str_To_Name_Buffer ("___");
762 Add_Str_To_Name_Buffer (Suffix);
764 Name_Buffer (Name_Len + 1) := ASCII.Nul;
766 end Get_External_Name_With_Suffix;
768 --------------------------
769 -- Get_Variant_Encoding --
770 --------------------------
772 procedure Get_Variant_Encoding (V : Node_Id) is
775 procedure Choice_Val (Typ : Character; Choice : Node_Id);
776 -- Output encoded value for a single choice value. Typ is the key
777 -- character ('S', 'F', or 'T') that precedes the choice value.
783 procedure Choice_Val (Typ : Character; Choice : Node_Id) is
785 Add_Char_To_Name_Buffer (Typ);
787 if Nkind (Choice) = N_Integer_Literal then
788 Add_Uint_To_Buffer (Intval (Choice));
790 -- Character literal with no entity present (this is the case
791 -- Standard.Character or Standard.Wide_Character as root type)
793 elsif Nkind (Choice) = N_Character_Literal
794 and then No (Entity (Choice))
796 Add_Uint_To_Buffer (Char_Literal_Value (Choice));
800 Ent : constant Entity_Id := Entity (Choice);
803 if Ekind (Ent) = E_Enumeration_Literal then
804 Add_Uint_To_Buffer (Enumeration_Rep (Ent));
807 pragma Assert (Ekind (Ent) = E_Constant);
808 Choice_Val (Typ, Constant_Value (Ent));
814 -- Start of processing for Get_Variant_Encoding
819 Choice := First (Discrete_Choices (V));
820 while Present (Choice) loop
821 if Nkind (Choice) = N_Others_Choice then
822 Add_Char_To_Name_Buffer ('O');
824 elsif Nkind (Choice) = N_Range then
825 Choice_Val ('R', Low_Bound (Choice));
826 Choice_Val ('T', High_Bound (Choice));
828 elsif Is_Entity_Name (Choice)
829 and then Is_Type (Entity (Choice))
831 Choice_Val ('R', Type_Low_Bound (Entity (Choice)));
832 Choice_Val ('T', Type_High_Bound (Entity (Choice)));
834 elsif Nkind (Choice) = N_Subtype_Indication then
836 Rang : constant Node_Id :=
837 Range_Expression (Constraint (Choice));
839 Choice_Val ('R', Low_Bound (Rang));
840 Choice_Val ('T', High_Bound (Rang));
844 Choice_Val ('S', Choice);
850 Name_Buffer (Name_Len + 1) := ASCII.NUL;
854 VP : constant Node_Id := Parent (V); -- Variant_Part
855 CL : constant Node_Id := Parent (VP); -- Component_List
856 RD : constant Node_Id := Parent (CL); -- Record_Definition
857 FT : constant Node_Id := Parent (RD); -- Full_Type_Declaration
860 Write_Str ("**** variant for type ");
861 Write_Name (Chars (Defining_Identifier (FT)));
862 Write_Str (" is encoded as ");
863 Write_Str (Name_Buffer (1 .. Name_Len));
867 end Get_Variant_Encoding;
869 ---------------------------------
870 -- Make_Packed_Array_Type_Name --
871 ---------------------------------
873 function Make_Packed_Array_Type_Name
879 Get_Name_String (Chars (Typ));
880 Add_Str_To_Name_Buffer ("___XP");
881 Add_Uint_To_Buffer (Csize);
883 end Make_Packed_Array_Type_Name;
885 -----------------------------------
886 -- Output_Homonym_Numbers_Suffix --
887 -----------------------------------
889 procedure Output_Homonym_Numbers_Suffix is
893 if Homonym_Len > 0 then
895 -- Check for all 1's, in which case we do not output
899 exit when Homonym_Numbers (J) /= '1';
901 -- If we reached end of string we do not output
903 if J = Homonym_Len then
908 exit when Homonym_Numbers (J + 1) /= '_';
912 -- If we exit the loop then suffix must be output
914 Add_Str_To_Name_Buffer ("__");
915 Add_Str_To_Name_Buffer (Homonym_Numbers (1 .. Homonym_Len));
918 end Output_Homonym_Numbers_Suffix;
920 ------------------------------
921 -- Prepend_String_To_Buffer --
922 ------------------------------
924 procedure Prepend_String_To_Buffer (S : String) is
925 N : constant Integer := S'Length;
927 Name_Buffer (1 + N .. Name_Len + N) := Name_Buffer (1 .. Name_Len);
928 Name_Buffer (1 .. N) := S;
929 Name_Len := Name_Len + N;
930 end Prepend_String_To_Buffer;
932 ----------------------------
933 -- Prepend_Uint_To_Buffer --
934 ----------------------------
936 procedure Prepend_Uint_To_Buffer (U : Uint) is
939 Prepend_String_To_Buffer ("m");
940 Prepend_Uint_To_Buffer (-U);
942 UI_Image (U, Decimal);
943 Prepend_String_To_Buffer (UI_Image_Buffer (1 .. UI_Image_Length));
945 end Prepend_Uint_To_Buffer;
947 ------------------------------
948 -- Qualify_All_Entity_Names --
949 ------------------------------
951 procedure Qualify_All_Entity_Names is
956 for J in Name_Qualify_Units.First .. Name_Qualify_Units.Last loop
957 E := Defining_Entity (Name_Qualify_Units.Table (J));
958 Qualify_Entity_Name (E);
960 Ent := First_Entity (E);
961 while Present (Ent) loop
962 Qualify_Entity_Name (Ent);
965 -- There are odd cases where Last_Entity (E) = E. This happens
966 -- in the case of renaming of packages. This test avoids getting
967 -- stuck in such cases.
972 end Qualify_All_Entity_Names;
974 -------------------------
975 -- Qualify_Entity_Name --
976 -------------------------
978 procedure Qualify_Entity_Name (Ent : Entity_Id) is
980 Full_Qualify_Name : String (1 .. Name_Buffer'Length);
981 Full_Qualify_Len : Natural := 0;
982 -- Used to accumulate fully qualified name of subprogram
984 procedure Fully_Qualify_Name (E : Entity_Id);
985 -- Used to qualify a subprogram or type name, where full
986 -- qualification up to Standard is always used. Name is set
987 -- in Full_Qualify_Name with the length in Full_Qualify_Len.
988 -- Note that this routine does not prepend the _ada_ string
989 -- required for library subprograms (this is done in the back end).
991 function Is_BNPE (S : Entity_Id) return Boolean;
992 -- Determines if S is a BNPE, i.e. Body-Nested Package Entity, which
993 -- is defined to be a package which is immediately nested within a
996 function Qualify_Needed (S : Entity_Id) return Boolean;
997 -- Given a scope, determines if the scope is to be included in the
998 -- fully qualified name, True if so, False if not.
1000 procedure Set_BNPE_Suffix (E : Entity_Id);
1001 -- Recursive routine to append the BNPE qualification suffix. Works
1002 -- from right to left with E being the current entity in the list.
1003 -- The result does NOT have the trailing n's and trailing b stripped.
1004 -- The caller must do this required stripping.
1006 procedure Set_Entity_Name (E : Entity_Id);
1007 -- Internal recursive routine that does most of the work. This routine
1008 -- leaves the result sitting in Name_Buffer and Name_Len.
1010 BNPE_Suffix_Needed : Boolean := False;
1011 -- Set true if a body-nested package entity suffix is required
1013 Save_Chars : constant Name_Id := Chars (Ent);
1014 -- Save original name
1016 ------------------------
1017 -- Fully_Qualify_Name --
1018 ------------------------
1020 procedure Fully_Qualify_Name (E : Entity_Id) is
1021 Discard : Boolean := False;
1024 -- Ignore empty entry (can happen in error cases)
1029 -- If this we are qualifying entities local to a generic
1030 -- instance, use the name of the original instantiation,
1031 -- not that of the anonymous subprogram in the wrapper
1032 -- package, so that gdb doesn't have to know about these.
1034 elsif Is_Generic_Instance (E)
1035 and then Is_Subprogram (E)
1036 and then not Comes_From_Source (E)
1037 and then not Is_Compilation_Unit (Scope (E))
1039 Fully_Qualify_Name (Related_Instance (Scope (E)));
1043 -- If we reached fully qualified name, then just copy it
1045 if Has_Fully_Qualified_Name (E) then
1046 Get_Name_String (Chars (E));
1047 Strip_Suffixes (Discard);
1048 Full_Qualify_Name (1 .. Name_Len) := Name_Buffer (1 .. Name_Len);
1049 Full_Qualify_Len := Name_Len;
1050 Set_Has_Fully_Qualified_Name (Ent);
1052 -- Case of non-fully qualified name
1055 if Scope (E) = Standard_Standard then
1056 Set_Has_Fully_Qualified_Name (Ent);
1058 Fully_Qualify_Name (Scope (E));
1059 Full_Qualify_Name (Full_Qualify_Len + 1) := '_';
1060 Full_Qualify_Name (Full_Qualify_Len + 2) := '_';
1061 Full_Qualify_Len := Full_Qualify_Len + 2;
1064 if Has_Qualified_Name (E) then
1065 Get_Unqualified_Name_String (Chars (E));
1067 Get_Name_String (Chars (E));
1070 -- A special check here, we never add internal block or loop
1071 -- names, since they intefere with debugging. We identify these
1072 -- by the fact that they start with an upper case B or L.
1073 -- But do add these if what we are qualifying is a __clean
1074 -- procedure since those need to be made unique.
1076 if (Name_Buffer (1) = 'B' or else Name_Buffer (1) = 'L')
1077 and then (not Debug_Flag_VV)
1078 and then Full_Qualify_Len > 2
1079 and then Chars (Ent) /= Name_uClean
1081 Full_Qualify_Len := Full_Qualify_Len - 2;
1085 (Full_Qualify_Len + 1 .. Full_Qualify_Len + Name_Len) :=
1086 Name_Buffer (1 .. Name_Len);
1087 Full_Qualify_Len := Full_Qualify_Len + Name_Len;
1088 Append_Homonym_Number (E);
1093 BNPE_Suffix_Needed := True;
1095 end Fully_Qualify_Name;
1101 function Is_BNPE (S : Entity_Id) return Boolean is
1104 Ekind (S) = E_Package
1105 and then Is_Package_Body_Entity (S);
1108 --------------------
1109 -- Qualify_Needed --
1110 --------------------
1112 function Qualify_Needed (S : Entity_Id) return Boolean is
1114 -- If we got all the way to Standard, then we have certainly
1115 -- fully qualified the name, so set the flag appropriately,
1116 -- and then return False, since we are most certainly done!
1118 if S = Standard_Standard then
1119 Set_Has_Fully_Qualified_Name (Ent, True);
1122 -- Otherwise figure out if further qualification is required
1128 Ekind (Ent) = E_Subprogram_Body
1130 (Ekind (S) /= E_Block
1131 and then not Is_Dynamic_Scope (S));
1135 ---------------------
1136 -- Set_BNPE_Suffix --
1137 ---------------------
1139 procedure Set_BNPE_Suffix (E : Entity_Id) is
1140 S : constant Entity_Id := Scope (E);
1143 if Qualify_Needed (S) then
1144 Set_BNPE_Suffix (S);
1147 Add_Char_To_Name_Buffer ('b');
1149 Add_Char_To_Name_Buffer ('n');
1153 Add_Char_To_Name_Buffer ('X');
1156 end Set_BNPE_Suffix;
1158 ---------------------
1159 -- Set_Entity_Name --
1160 ---------------------
1162 procedure Set_Entity_Name (E : Entity_Id) is
1163 S : constant Entity_Id := Scope (E);
1166 -- If we reach an already qualified name, just take the encoding
1167 -- except that we strip the package body suffixes, since these
1168 -- will be separately put on later.
1170 if Has_Qualified_Name (E) then
1171 Get_Name_String_And_Append (Chars (E));
1172 Strip_Suffixes (BNPE_Suffix_Needed);
1174 -- If the top level name we are adding is itself fully
1175 -- qualified, then that means that the name that we are
1176 -- preparing for the Fully_Qualify_Name call will also
1177 -- generate a fully qualified name.
1179 if Has_Fully_Qualified_Name (E) then
1180 Set_Has_Fully_Qualified_Name (Ent);
1183 -- Case where upper level name is not encoded yet
1186 -- Recurse if further qualification required
1188 if Qualify_Needed (S) then
1189 Set_Entity_Name (S);
1190 Add_Str_To_Name_Buffer ("__");
1193 -- Otherwise get name and note if it is a NPBE
1195 Get_Name_String_And_Append (Chars (E));
1198 BNPE_Suffix_Needed := True;
1201 Append_Homonym_Number (E);
1203 end Set_Entity_Name;
1205 -- Start of processing for Qualify_Entity_Name
1208 if Has_Qualified_Name (Ent) then
1211 -- Here is where we create the proper link for renaming
1213 elsif Ekind (Ent) = E_Enumeration_Literal
1214 and then Present (Debug_Renaming_Link (Ent))
1217 Qualify_Entity_Name (Debug_Renaming_Link (Ent));
1218 Get_Name_String (Chars (Ent));
1219 Prepend_String_To_Buffer
1220 (Get_Name_String (Chars (Debug_Renaming_Link (Ent))));
1221 Set_Chars (Ent, Name_Enter);
1222 Set_Has_Qualified_Name (Ent);
1225 elsif Is_Subprogram (Ent)
1226 or else Ekind (Ent) = E_Subprogram_Body
1227 or else Is_Type (Ent)
1229 Fully_Qualify_Name (Ent);
1230 Name_Len := Full_Qualify_Len;
1231 Name_Buffer (1 .. Name_Len) := Full_Qualify_Name (1 .. Name_Len);
1233 elsif Qualify_Needed (Scope (Ent)) then
1235 Set_Entity_Name (Ent);
1238 Set_Has_Qualified_Name (Ent);
1242 -- Fall through with a fully qualified name in Name_Buffer/Name_Len
1244 Output_Homonym_Numbers_Suffix;
1246 -- Add body-nested package suffix if required
1248 if BNPE_Suffix_Needed
1249 and then Ekind (Ent) /= E_Enumeration_Literal
1251 Set_BNPE_Suffix (Ent);
1253 -- Strip trailing n's and last trailing b as required. note that
1254 -- we know there is at least one b, or no suffix would be generated.
1256 while Name_Buffer (Name_Len) = 'n' loop
1257 Name_Len := Name_Len - 1;
1260 Name_Len := Name_Len - 1;
1263 Set_Chars (Ent, Name_Enter);
1264 Set_Has_Qualified_Name (Ent);
1266 if Debug_Flag_BB then
1268 Write_Name (Save_Chars);
1269 Write_Str (" qualified as ");
1270 Write_Name (Chars (Ent));
1273 end Qualify_Entity_Name;
1275 --------------------------
1276 -- Qualify_Entity_Names --
1277 --------------------------
1279 procedure Qualify_Entity_Names (N : Node_Id) is
1281 Name_Qualify_Units.Append (N);
1282 end Qualify_Entity_Names;
1284 --------------------
1285 -- Strip_Suffixes --
1286 --------------------
1288 procedure Strip_Suffixes (BNPE_Suffix_Found : in out Boolean) is
1292 -- Search for and strip BNPE suffix
1294 for J in reverse 2 .. Name_Len loop
1295 if Name_Buffer (J) = 'X' then
1297 BNPE_Suffix_Found := True;
1301 exit when Name_Buffer (J) /= 'b' and then Name_Buffer (J) /= 'n';
1304 -- Search for and strip homonym numbers suffix
1306 for J in reverse 2 .. Name_Len - 2 loop
1307 if Name_Buffer (J) = '_'
1308 and then Name_Buffer (J + 1) = '_'
1310 if Name_Buffer (J + 2) in '0' .. '9' then
1311 if Homonym_Len > 0 then
1312 Homonym_Len := Homonym_Len + 1;
1313 Homonym_Numbers (Homonym_Len) := '-';
1316 SL := Name_Len - (J + 1);
1318 Homonym_Numbers (Homonym_Len + 1 .. Homonym_Len + SL) :=
1319 Name_Buffer (J + 2 .. Name_Len);
1321 Homonym_Len := Homonym_Len + SL;