1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1996-2003 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");
367 -- Get renamed entity and compute suffix
377 when N_Expanded_Name =>
379 -- The entity field for an N_Expanded_Name is on the
380 -- expanded name node itself, so we are done here too.
384 when N_Selected_Component =>
385 Prepend_String_To_Buffer
386 (Get_Name_String (Chars (Selector_Name (Ren))));
387 Prepend_String_To_Buffer ("XR");
390 when N_Indexed_Component =>
392 X : Node_Id := Last (Expressions (Ren));
395 while Present (X) loop
396 if not Output_Subscript (X, "XS") then
397 Set_Materialize_Entity (Ent);
409 Typ := Etype (First_Index (Etype (Nam)));
411 if not Output_Subscript (Type_High_Bound (Typ), "XS") then
412 Set_Materialize_Entity (Ent);
416 if not Output_Subscript (Type_Low_Bound (Typ), "XL") then
417 Set_Materialize_Entity (Ent);
423 when N_Explicit_Dereference =>
424 Prepend_String_To_Buffer ("XA");
427 -- For now, anything else simply results in no translation
430 Set_Materialize_Entity (Ent);
435 Prepend_String_To_Buffer ("___XE");
437 -- For now, the literal name contains only the suffix. The Entity_Id
438 -- value for the name is used to create a link from this literal name
439 -- to the renamed entity using the Debug_Renaming_Link field. Then the
440 -- Qualify_Entity_Name procedure uses this link to create the proper
441 -- fully qualified name.
443 -- The reason we do things this way is that we really need to copy the
444 -- qualification of the renamed entity, and it is really much easier to
445 -- do this after the renamed entity has itself been fully qualified.
447 Lit := Make_Defining_Identifier (Loc, Chars => Name_Enter);
448 Set_Debug_Renaming_Link (Lit, Entity (Ren));
450 -- Return the appropriate enumeration type
452 Def := Make_Defining_Identifier (Loc, Chars => Rnm);
454 Make_Full_Type_Declaration (Loc,
455 Defining_Identifier => Def,
457 Make_Enumeration_Type_Definition (Loc,
458 Literals => New_List (Lit)));
460 Set_Needs_Debug_Info (Def);
461 Set_Needs_Debug_Info (Lit);
463 Set_Discard_Names (Defining_Identifier (Res));
466 -- If we get an exception, just figure it is a case that we cannot
467 -- successfully handle using our current approach, since this is
468 -- only for debugging, no need to take the compilation with us!
472 return Make_Null_Statement (Loc);
473 end Debug_Renaming_Declaration;
475 ----------------------
476 -- Get_Encoded_Name --
477 ----------------------
479 -- Note: see spec for details on encodings
481 procedure Get_Encoded_Name (E : Entity_Id) is
482 Has_Suffix : Boolean;
485 Get_Name_String (Chars (E));
487 -- Nothing to do if we do not have a type
491 -- Or if this is an enumeration base type
493 or else (Is_Enumeration_Type (E)
494 and then E = Base_Type (E))
496 -- Or if this is a dummy type for a renaming
498 or else (Name_Len >= 3 and then
499 Name_Buffer (Name_Len - 2 .. Name_Len) = "_XR")
501 or else (Name_Len >= 4 and then
502 (Name_Buffer (Name_Len - 3 .. Name_Len) = "_XRE"
504 Name_Buffer (Name_Len - 3 .. Name_Len) = "_XRP"))
506 -- For all these cases, just return the name unchanged
509 Name_Buffer (Name_Len + 1) := ASCII.Nul;
517 if Is_Fixed_Point_Type (E) then
518 Get_External_Name_With_Suffix (E, "XF_");
519 Add_Real_To_Buffer (Delta_Value (E));
521 if Small_Value (E) /= Delta_Value (E) then
522 Add_Str_To_Name_Buffer ("_");
523 Add_Real_To_Buffer (Small_Value (E));
526 -- Vax floating-point case
528 elsif Vax_Float (E) then
530 if Digits_Value (Base_Type (E)) = 6 then
531 Get_External_Name_With_Suffix (E, "XFF");
533 elsif Digits_Value (Base_Type (E)) = 9 then
534 Get_External_Name_With_Suffix (E, "XFF");
537 pragma Assert (Digits_Value (Base_Type (E)) = 15);
538 Get_External_Name_With_Suffix (E, "XFG");
541 -- Discrete case where bounds do not match size
543 elsif Is_Discrete_Type (E)
544 and then not Bounds_Match_Size (E)
546 if Has_Biased_Representation (E) then
547 Get_External_Name_With_Suffix (E, "XB");
549 Get_External_Name_With_Suffix (E, "XD");
553 Lo : constant Node_Id := Type_Low_Bound (E);
554 Hi : constant Node_Id := Type_High_Bound (E);
556 Lo_Con : constant Boolean := Compile_Time_Known_Value (Lo);
557 Hi_Con : constant Boolean := Compile_Time_Known_Value (Hi);
559 Lo_Discr : constant Boolean :=
560 Nkind (Lo) = N_Identifier
562 Ekind (Entity (Lo)) = E_Discriminant;
564 Hi_Discr : constant Boolean :=
565 Nkind (Hi) = N_Identifier
567 Ekind (Entity (Hi)) = E_Discriminant;
569 Lo_Encode : constant Boolean := Lo_Con or Lo_Discr;
570 Hi_Encode : constant Boolean := Hi_Con or Hi_Discr;
573 if Lo_Encode or Hi_Encode then
576 Add_Str_To_Name_Buffer ("LU_");
578 Add_Str_To_Name_Buffer ("L_");
581 Add_Str_To_Name_Buffer ("U_");
585 Add_Uint_To_Buffer (Expr_Rep_Value (Lo));
587 Get_Name_String_And_Append (Chars (Entity (Lo)));
590 if Lo_Encode and Hi_Encode then
591 Add_Str_To_Name_Buffer ("__");
595 Add_Uint_To_Buffer (Expr_Rep_Value (Hi));
597 Get_Name_String_And_Append (Chars (Entity (Hi)));
602 -- For all other cases, the encoded name is the normal type name
606 Get_External_Name (E, Has_Suffix);
609 if Debug_Flag_B and then Has_Suffix then
610 Write_Str ("**** type ");
611 Write_Name (Chars (E));
612 Write_Str (" is encoded as ");
613 Write_Str (Name_Buffer (1 .. Name_Len));
617 Name_Buffer (Name_Len + 1) := ASCII.NUL;
618 end Get_Encoded_Name;
620 -----------------------
621 -- Get_External_Name --
622 -----------------------
624 procedure Get_External_Name (Entity : Entity_Id; Has_Suffix : Boolean)
626 E : Entity_Id := Entity;
629 procedure Get_Qualified_Name_And_Append (Entity : Entity_Id);
630 -- Appends fully qualified name of given entity to Name_Buffer
632 -----------------------------------
633 -- Get_Qualified_Name_And_Append --
634 -----------------------------------
636 procedure Get_Qualified_Name_And_Append (Entity : Entity_Id) is
638 -- If the entity is a compilation unit, its scope is Standard,
639 -- there is no outer scope, and the no further qualification
642 -- If the front end has already computed a fully qualified name,
643 -- then it is also the case that no further qualification is
646 if Present (Scope (Scope (Entity)))
647 and then not Has_Fully_Qualified_Name (Entity)
649 Get_Qualified_Name_And_Append (Scope (Entity));
650 Add_Str_To_Name_Buffer ("__");
651 Get_Name_String_And_Append (Chars (Entity));
652 Append_Homonym_Number (Entity);
655 Get_Name_String_And_Append (Chars (Entity));
658 end Get_Qualified_Name_And_Append;
660 -- Start of processing for Get_External_Name
665 -- If this is a child unit, we want the child
667 if Nkind (E) = N_Defining_Program_Unit_Name then
668 E := Defining_Identifier (Entity);
673 -- Case of interface name being used
675 if (Kind = E_Procedure or else
676 Kind = E_Function or else
677 Kind = E_Constant or else
678 Kind = E_Variable or else
680 and then Present (Interface_Name (E))
681 and then No (Address_Clause (E))
682 and then not Has_Suffix
684 Add_String_To_Name_Buffer (Strval (Interface_Name (E)));
686 -- All other cases besides the interface name case
689 -- If this is a library level subprogram (i.e. a subprogram that is a
690 -- compilation unit other than a subunit), then we prepend _ada_ to
691 -- ensure distinctions required as described in the spec.
692 -- Check explicitly for child units, because those are not flagged
693 -- as Compilation_Units by lib. Should they be ???
696 and then (Is_Compilation_Unit (E) or Is_Child_Unit (E))
697 and then not Has_Suffix
699 Add_Str_To_Name_Buffer ("_ada_");
702 -- If the entity is a subprogram instance that is not a compilation
703 -- unit, generate the name of the original Ada entity, which is the
706 if Is_Generic_Instance (E)
707 and then Is_Subprogram (E)
708 and then not Is_Compilation_Unit (Scope (E))
709 and then (Ekind (Scope (E)) = E_Package
711 Ekind (Scope (E)) = E_Package_Body)
712 and then Present (Related_Instance (Scope (E)))
714 E := Related_Instance (Scope (E));
717 Get_Qualified_Name_And_Append (E);
720 Name_Buffer (Name_Len + 1) := ASCII.Nul;
721 end Get_External_Name;
723 -----------------------------------
724 -- Get_External_Name_With_Suffix --
725 -----------------------------------
727 procedure Get_External_Name_With_Suffix
731 Has_Suffix : constant Boolean := (Suffix /= "");
732 use type Opt.Operating_Mode_Type;
735 if Opt.Operating_Mode /= Opt.Generate_Code then
737 -- If we are not in code generation mode, we still may call this
738 -- procedure from Back_End (more specifically - from gigi for doing
739 -- type representation annotation or some representation-specific
740 -- checks). But in this mode there is no need to mess with external
741 -- names. Furthermore, the call causes difficulties in this case
742 -- because the string representing the homonym number is not
743 -- correctly reset as a part of the call to
744 -- Output_Homonym_Numbers_Suffix (which is not called in gigi)
749 Get_External_Name (Entity, Has_Suffix);
752 Add_Str_To_Name_Buffer ("___");
753 Add_Str_To_Name_Buffer (Suffix);
755 Name_Buffer (Name_Len + 1) := ASCII.Nul;
757 end Get_External_Name_With_Suffix;
759 --------------------------
760 -- Get_Variant_Encoding --
761 --------------------------
763 procedure Get_Variant_Encoding (V : Node_Id) is
766 procedure Choice_Val (Typ : Character; Choice : Node_Id);
767 -- Output encoded value for a single choice value. Typ is the key
768 -- character ('S', 'F', or 'T') that precedes the choice value.
774 procedure Choice_Val (Typ : Character; Choice : Node_Id) is
776 Add_Char_To_Name_Buffer (Typ);
778 if Nkind (Choice) = N_Integer_Literal then
779 Add_Uint_To_Buffer (Intval (Choice));
781 -- Character literal with no entity present (this is the case
782 -- Standard.Character or Standard.Wide_Character as root type)
784 elsif Nkind (Choice) = N_Character_Literal
785 and then No (Entity (Choice))
788 (UI_From_Int (Int (Char_Literal_Value (Choice))));
792 Ent : constant Entity_Id := Entity (Choice);
795 if Ekind (Ent) = E_Enumeration_Literal then
796 Add_Uint_To_Buffer (Enumeration_Rep (Ent));
799 pragma Assert (Ekind (Ent) = E_Constant);
800 Choice_Val (Typ, Constant_Value (Ent));
806 -- Start of processing for Get_Variant_Encoding
811 Choice := First (Discrete_Choices (V));
812 while Present (Choice) loop
813 if Nkind (Choice) = N_Others_Choice then
814 Add_Char_To_Name_Buffer ('O');
816 elsif Nkind (Choice) = N_Range then
817 Choice_Val ('R', Low_Bound (Choice));
818 Choice_Val ('T', High_Bound (Choice));
820 elsif Is_Entity_Name (Choice)
821 and then Is_Type (Entity (Choice))
823 Choice_Val ('R', Type_Low_Bound (Entity (Choice)));
824 Choice_Val ('T', Type_High_Bound (Entity (Choice)));
826 elsif Nkind (Choice) = N_Subtype_Indication then
828 Rang : constant Node_Id :=
829 Range_Expression (Constraint (Choice));
831 Choice_Val ('R', Low_Bound (Rang));
832 Choice_Val ('T', High_Bound (Rang));
836 Choice_Val ('S', Choice);
842 Name_Buffer (Name_Len + 1) := ASCII.NUL;
846 VP : constant Node_Id := Parent (V); -- Variant_Part
847 CL : constant Node_Id := Parent (VP); -- Component_List
848 RD : constant Node_Id := Parent (CL); -- Record_Definition
849 FT : constant Node_Id := Parent (RD); -- Full_Type_Declaration
852 Write_Str ("**** variant for type ");
853 Write_Name (Chars (Defining_Identifier (FT)));
854 Write_Str (" is encoded as ");
855 Write_Str (Name_Buffer (1 .. Name_Len));
859 end Get_Variant_Encoding;
861 ---------------------------------
862 -- Make_Packed_Array_Type_Name --
863 ---------------------------------
865 function Make_Packed_Array_Type_Name
871 Get_Name_String (Chars (Typ));
872 Add_Str_To_Name_Buffer ("___XP");
873 Add_Uint_To_Buffer (Csize);
875 end Make_Packed_Array_Type_Name;
877 -----------------------------------
878 -- Output_Homonym_Numbers_Suffix --
879 -----------------------------------
881 procedure Output_Homonym_Numbers_Suffix is
885 if Homonym_Len > 0 then
887 -- Check for all 1's, in which case we do not output
891 exit when Homonym_Numbers (J) /= '1';
893 -- If we reached end of string we do not output
895 if J = Homonym_Len then
900 exit when Homonym_Numbers (J + 1) /= '_';
904 -- If we exit the loop then suffix must be output
906 if No_Dollar_In_Label then
907 Add_Str_To_Name_Buffer ("__");
909 Add_Char_To_Name_Buffer ('$');
912 Add_Str_To_Name_Buffer (Homonym_Numbers (1 .. Homonym_Len));
915 end Output_Homonym_Numbers_Suffix;
917 ------------------------------
918 -- Prepend_String_To_Buffer --
919 ------------------------------
921 procedure Prepend_String_To_Buffer (S : String) is
922 N : constant Integer := S'Length;
924 Name_Buffer (1 + N .. Name_Len + N) := Name_Buffer (1 .. Name_Len);
925 Name_Buffer (1 .. N) := S;
926 Name_Len := Name_Len + N;
927 end Prepend_String_To_Buffer;
929 ----------------------------
930 -- Prepend_Uint_To_Buffer --
931 ----------------------------
933 procedure Prepend_Uint_To_Buffer (U : Uint) is
936 Prepend_String_To_Buffer ("m");
937 Prepend_Uint_To_Buffer (-U);
939 UI_Image (U, Decimal);
940 Prepend_String_To_Buffer (UI_Image_Buffer (1 .. UI_Image_Length));
942 end Prepend_Uint_To_Buffer;
944 ------------------------------
945 -- Qualify_All_Entity_Names --
946 ------------------------------
948 procedure Qualify_All_Entity_Names is
953 for J in Name_Qualify_Units.First .. Name_Qualify_Units.Last loop
954 E := Defining_Entity (Name_Qualify_Units.Table (J));
955 Qualify_Entity_Name (E);
957 Ent := First_Entity (E);
958 while Present (Ent) loop
959 Qualify_Entity_Name (Ent);
962 -- There are odd cases where Last_Entity (E) = E. This happens
963 -- in the case of renaming of packages. This test avoids getting
964 -- stuck in such cases.
969 end Qualify_All_Entity_Names;
971 -------------------------
972 -- Qualify_Entity_Name --
973 -------------------------
975 procedure Qualify_Entity_Name (Ent : Entity_Id) is
977 Full_Qualify_Name : String (1 .. Name_Buffer'Length);
978 Full_Qualify_Len : Natural := 0;
979 -- Used to accumulate fully qualified name of subprogram
981 procedure Fully_Qualify_Name (E : Entity_Id);
982 -- Used to qualify a subprogram or type name, where full
983 -- qualification up to Standard is always used. Name is set
984 -- in Full_Qualify_Name with the length in Full_Qualify_Len.
985 -- Note that this routine does not prepend the _ada_ string
986 -- required for library subprograms (this is done in the back end).
988 function Is_BNPE (S : Entity_Id) return Boolean;
989 -- Determines if S is a BNPE, i.e. Body-Nested Package Entity, which
990 -- is defined to be a package which is immediately nested within a
993 function Qualify_Needed (S : Entity_Id) return Boolean;
994 -- Given a scope, determines if the scope is to be included in the
995 -- fully qualified name, True if so, False if not.
997 procedure Set_BNPE_Suffix (E : Entity_Id);
998 -- Recursive routine to append the BNPE qualification suffix. Works
999 -- from right to left with E being the current entity in the list.
1000 -- The result does NOT have the trailing n's and trailing b stripped.
1001 -- The caller must do this required stripping.
1003 procedure Set_Entity_Name (E : Entity_Id);
1004 -- Internal recursive routine that does most of the work. This routine
1005 -- leaves the result sitting in Name_Buffer and Name_Len.
1007 BNPE_Suffix_Needed : Boolean := False;
1008 -- Set true if a body-nested package entity suffix is required
1010 Save_Chars : constant Name_Id := Chars (Ent);
1011 -- Save original name
1013 ------------------------
1014 -- Fully_Qualify_Name --
1015 ------------------------
1017 procedure Fully_Qualify_Name (E : Entity_Id) is
1018 Discard : Boolean := False;
1021 -- Ignore empty entry (can happen in error cases)
1026 -- If this we are qualifying entities local to a generic
1027 -- instance, use the name of the original instantiation,
1028 -- not that of the anonymous subprogram in the wrapper
1029 -- package, so that gdb doesn't have to know about these.
1031 elsif Is_Generic_Instance (E)
1032 and then Is_Subprogram (E)
1033 and then not Comes_From_Source (E)
1034 and then not Is_Compilation_Unit (Scope (E))
1036 Fully_Qualify_Name (Related_Instance (Scope (E)));
1040 -- If we reached fully qualified name, then just copy it
1042 if Has_Fully_Qualified_Name (E) then
1043 Get_Name_String (Chars (E));
1044 Strip_Suffixes (Discard);
1045 Full_Qualify_Name (1 .. Name_Len) := Name_Buffer (1 .. Name_Len);
1046 Full_Qualify_Len := Name_Len;
1047 Set_Has_Fully_Qualified_Name (Ent);
1049 -- Case of non-fully qualified name
1052 if Scope (E) = Standard_Standard then
1053 Set_Has_Fully_Qualified_Name (Ent);
1055 Fully_Qualify_Name (Scope (E));
1056 Full_Qualify_Name (Full_Qualify_Len + 1) := '_';
1057 Full_Qualify_Name (Full_Qualify_Len + 2) := '_';
1058 Full_Qualify_Len := Full_Qualify_Len + 2;
1061 if Has_Qualified_Name (E) then
1062 Get_Unqualified_Name_String (Chars (E));
1064 Get_Name_String (Chars (E));
1067 -- A special check here, we never add internal block or loop
1068 -- names, since they intefere with debugging. We identify these
1069 -- by the fact that they start with an upper case B or L.
1070 -- But do add these if what we are qualifying is a __clean
1071 -- procedure since those need to be made unique.
1073 if (Name_Buffer (1) = 'B' or else Name_Buffer (1) = 'L')
1074 and then (not Debug_Flag_VV)
1075 and then Full_Qualify_Len > 2
1076 and then Chars (Ent) /= Name_uClean
1078 Full_Qualify_Len := Full_Qualify_Len - 2;
1082 (Full_Qualify_Len + 1 .. Full_Qualify_Len + Name_Len) :=
1083 Name_Buffer (1 .. Name_Len);
1084 Full_Qualify_Len := Full_Qualify_Len + Name_Len;
1085 Append_Homonym_Number (E);
1090 BNPE_Suffix_Needed := True;
1092 end Fully_Qualify_Name;
1098 function Is_BNPE (S : Entity_Id) return Boolean is
1101 Ekind (S) = E_Package
1102 and then Is_Package_Body_Entity (S);
1105 --------------------
1106 -- Qualify_Needed --
1107 --------------------
1109 function Qualify_Needed (S : Entity_Id) return Boolean is
1111 -- If we got all the way to Standard, then we have certainly
1112 -- fully qualified the name, so set the flag appropriately,
1113 -- and then return False, since we are most certainly done!
1115 if S = Standard_Standard then
1116 Set_Has_Fully_Qualified_Name (Ent, True);
1119 -- Otherwise figure out if further qualification is required
1125 Ekind (Ent) = E_Subprogram_Body
1127 (Ekind (S) /= E_Block
1128 and then not Is_Dynamic_Scope (S));
1132 ---------------------
1133 -- Set_BNPE_Suffix --
1134 ---------------------
1136 procedure Set_BNPE_Suffix (E : Entity_Id) is
1137 S : constant Entity_Id := Scope (E);
1140 if Qualify_Needed (S) then
1141 Set_BNPE_Suffix (S);
1144 Add_Char_To_Name_Buffer ('b');
1146 Add_Char_To_Name_Buffer ('n');
1150 Add_Char_To_Name_Buffer ('X');
1153 end Set_BNPE_Suffix;
1155 ---------------------
1156 -- Set_Entity_Name --
1157 ---------------------
1159 procedure Set_Entity_Name (E : Entity_Id) is
1160 S : constant Entity_Id := Scope (E);
1163 -- If we reach an already qualified name, just take the encoding
1164 -- except that we strip the package body suffixes, since these
1165 -- will be separately put on later.
1167 if Has_Qualified_Name (E) then
1168 Get_Name_String_And_Append (Chars (E));
1169 Strip_Suffixes (BNPE_Suffix_Needed);
1171 -- If the top level name we are adding is itself fully
1172 -- qualified, then that means that the name that we are
1173 -- preparing for the Fully_Qualify_Name call will also
1174 -- generate a fully qualified name.
1176 if Has_Fully_Qualified_Name (E) then
1177 Set_Has_Fully_Qualified_Name (Ent);
1180 -- Case where upper level name is not encoded yet
1183 -- Recurse if further qualification required
1185 if Qualify_Needed (S) then
1186 Set_Entity_Name (S);
1187 Add_Str_To_Name_Buffer ("__");
1190 -- Otherwise get name and note if it is a NPBE
1192 Get_Name_String_And_Append (Chars (E));
1195 BNPE_Suffix_Needed := True;
1198 Append_Homonym_Number (E);
1200 end Set_Entity_Name;
1202 -- Start of processing for Qualify_Entity_Name
1205 if Has_Qualified_Name (Ent) then
1208 -- Here is where we create the proper link for renaming
1210 elsif Ekind (Ent) = E_Enumeration_Literal
1211 and then Present (Debug_Renaming_Link (Ent))
1214 Qualify_Entity_Name (Debug_Renaming_Link (Ent));
1215 Get_Name_String (Chars (Ent));
1216 Prepend_String_To_Buffer
1217 (Get_Name_String (Chars (Debug_Renaming_Link (Ent))));
1218 Set_Chars (Ent, Name_Enter);
1219 Set_Has_Qualified_Name (Ent);
1222 elsif Is_Subprogram (Ent)
1223 or else Ekind (Ent) = E_Subprogram_Body
1224 or else Is_Type (Ent)
1226 Fully_Qualify_Name (Ent);
1227 Name_Len := Full_Qualify_Len;
1228 Name_Buffer (1 .. Name_Len) := Full_Qualify_Name (1 .. Name_Len);
1230 elsif Qualify_Needed (Scope (Ent)) then
1232 Set_Entity_Name (Ent);
1235 Set_Has_Qualified_Name (Ent);
1239 -- Fall through with a fully qualified name in Name_Buffer/Name_Len
1241 Output_Homonym_Numbers_Suffix;
1243 -- Add body-nested package suffix if required
1245 if BNPE_Suffix_Needed
1246 and then Ekind (Ent) /= E_Enumeration_Literal
1248 Set_BNPE_Suffix (Ent);
1250 -- Strip trailing n's and last trailing b as required. note that
1251 -- we know there is at least one b, or no suffix would be generated.
1253 while Name_Buffer (Name_Len) = 'n' loop
1254 Name_Len := Name_Len - 1;
1257 Name_Len := Name_Len - 1;
1260 Set_Chars (Ent, Name_Enter);
1261 Set_Has_Qualified_Name (Ent);
1263 if Debug_Flag_BB then
1265 Write_Name (Save_Chars);
1266 Write_Str (" qualified as ");
1267 Write_Name (Chars (Ent));
1270 end Qualify_Entity_Name;
1272 --------------------------
1273 -- Qualify_Entity_Names --
1274 --------------------------
1276 procedure Qualify_Entity_Names (N : Node_Id) is
1278 Name_Qualify_Units.Append (N);
1279 end Qualify_Entity_Names;
1281 --------------------
1282 -- Strip_Suffixes --
1283 --------------------
1285 procedure Strip_Suffixes (BNPE_Suffix_Found : in out Boolean) is
1289 -- Search for and strip BNPE suffix
1291 for J in reverse 2 .. Name_Len loop
1292 if Name_Buffer (J) = 'X' then
1294 BNPE_Suffix_Found := True;
1298 exit when Name_Buffer (J) /= 'b' and then Name_Buffer (J) /= 'n';
1301 -- Search for and strip homonym numbers suffix
1303 -- Case of __ used for homonym numbers suffix
1305 if No_Dollar_In_Label then
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;
1328 -- Case of $ used for homonym numbers suffix
1331 for J in reverse 2 .. Name_Len - 1 loop
1332 if Name_Buffer (J) = '$' then
1333 if Name_Buffer (J + 1) in '0' .. '9' then
1334 if Homonym_Len > 0 then
1335 Homonym_Len := Homonym_Len + 1;
1336 Homonym_Numbers (Homonym_Len) := '-';
1341 Homonym_Numbers (Homonym_Len + 1 .. Homonym_Len + SL) :=
1342 Name_Buffer (J + 1 .. Name_Len);
1344 Homonym_Len := Homonym_Len + SL;