1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
11 -- Copyright (C) 1992-2001, Free Software Foundation, Inc. --
13 -- GNAT is free software; you can redistribute it and/or modify it under --
14 -- terms of the GNU General Public License as published by the Free Soft- --
15 -- ware Foundation; either version 2, or (at your option) any later ver- --
16 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
17 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
18 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
19 -- for more details. You should have received a copy of the GNU General --
20 -- Public License distributed with GNAT; see file COPYING. If not, write --
21 -- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
22 -- MA 02111-1307, USA. --
24 -- As a special exception, if other files instantiate generics from this --
25 -- unit, or you link this unit with other files to produce an executable, --
26 -- this unit does not by itself cause the resulting executable to be --
27 -- covered by the GNU General Public License. This exception does not --
28 -- however invalidate any other reasons why the executable file might be --
29 -- covered by the GNU Public License. --
31 -- GNAT was originally developed by the GNAT team at New York University. --
32 -- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
34 ------------------------------------------------------------------------------
36 with Atree; use Atree;
37 with Casing; use Casing;
38 with Einfo; use Einfo;
41 with Namet; use Namet;
42 with Nlists; use Nlists;
43 with Output; use Output;
44 with Sinfo; use Sinfo;
45 with Sinput; use Sinput;
53 function Get_Body_Name (N : Unit_Name_Type) return Unit_Name_Type is
57 pragma Assert (Name_Len > 2
58 and then Name_Buffer (Name_Len - 1) = '%'
59 and then Name_Buffer (Name_Len) = 's');
61 Name_Buffer (Name_Len) := 'b';
65 -----------------------------------
66 -- Get_External_Unit_Name_String --
67 -----------------------------------
69 procedure Get_External_Unit_Name_String (N : Unit_Name_Type) is
74 -- Get unit name and eliminate trailing %s or %b
77 Name_Len := Name_Len - 2;
79 -- Find number of components
82 for J in 1 .. Name_Len loop
83 if Name_Buffer (J) = '.' then
88 -- If simple name, nothing to do
94 -- If name has multiple components, replace dots by double underscore
96 Newlen := Name_Len + Pcount;
98 for J in reverse 1 .. Name_Len loop
99 if Name_Buffer (J) = '.' then
100 Name_Buffer (Newlen) := '_';
101 Name_Buffer (Newlen - 1) := '_';
102 Newlen := Newlen - 2;
105 Name_Buffer (Newlen) := Name_Buffer (J);
106 Newlen := Newlen - 1;
110 Name_Len := Name_Len + Pcount;
111 end Get_External_Unit_Name_String;
113 --------------------------
114 -- Get_Parent_Body_Name --
115 --------------------------
117 function Get_Parent_Body_Name (N : Unit_Name_Type) return Unit_Name_Type is
121 while Name_Buffer (Name_Len) /= '.' loop
122 pragma Assert (Name_Len > 1); -- not a child or subunit name
123 Name_Len := Name_Len - 1;
126 Name_Buffer (Name_Len) := '%';
127 Name_Len := Name_Len + 1;
128 Name_Buffer (Name_Len) := 'b';
131 end Get_Parent_Body_Name;
133 --------------------------
134 -- Get_Parent_Spec_Name --
135 --------------------------
137 function Get_Parent_Spec_Name (N : Unit_Name_Type) return Unit_Name_Type is
141 while Name_Buffer (Name_Len) /= '.' loop
143 return No_Name; -- not a child or subunit name
145 Name_Len := Name_Len - 1;
149 Name_Buffer (Name_Len) := '%';
150 Name_Len := Name_Len + 1;
151 Name_Buffer (Name_Len) := 's';
154 end Get_Parent_Spec_Name;
160 function Get_Spec_Name (N : Unit_Name_Type) return Unit_Name_Type is
164 pragma Assert (Name_Len > 2
165 and then Name_Buffer (Name_Len - 1) = '%'
166 and then Name_Buffer (Name_Len) = 'b');
168 Name_Buffer (Name_Len) := 's';
176 function Get_Unit_Name (N : Node_Id) return Unit_Name_Type is
178 Unit_Name_Buffer : String (1 .. Hostparm.Max_Name_Length);
179 -- Buffer used to build name of unit. Note that we cannot use the
180 -- Name_Buffer in package Name_Table because we use it to read
183 Unit_Name_Length : Natural := 0;
184 -- Length of name stored in Unit_Name_Buffer
189 procedure Add_Char (C : Character);
190 -- Add a single character to stored unit name
192 procedure Add_Name (Name : Name_Id);
193 -- Add the characters of a names table entry to stored unit name
195 procedure Add_Node_Name (Node : Node_Id);
196 -- Recursive procedure adds characters associated with Node
198 function Get_Parent (Node : Node_Id) return Node_Id;
199 -- Get parent compilation unit of a stub
205 procedure Add_Char (C : Character) is
207 -- Should really check for max length exceeded here???
208 Unit_Name_Length := Unit_Name_Length + 1;
209 Unit_Name_Buffer (Unit_Name_Length) := C;
216 procedure Add_Name (Name : Name_Id) is
218 Get_Name_String (Name);
220 for J in 1 .. Name_Len loop
221 Add_Char (Name_Buffer (J));
229 procedure Add_Node_Name (Node : Node_Id) is
230 Kind : Node_Kind := Nkind (Node);
233 -- Just ignore an error node (someone else will give a message)
238 -- Otherwise see what kind of node we have
244 N_Defining_Identifier |
245 N_Defining_Operator_Symbol =>
247 -- Note: it is of course an error to have a defining
248 -- operator symbol at this point, but this is not where
249 -- the error is signalled, so we handle it nicely here!
251 Add_Name (Chars (Node));
253 when N_Defining_Program_Unit_Name =>
254 Add_Node_Name (Name (Node));
256 Add_Node_Name (Defining_Identifier (Node));
258 when N_Selected_Component |
260 Add_Node_Name (Prefix (Node));
262 Add_Node_Name (Selector_Name (Node));
264 when N_Subprogram_Specification |
265 N_Package_Specification =>
266 Add_Node_Name (Defining_Unit_Name (Node));
268 when N_Subprogram_Body |
269 N_Subprogram_Declaration |
270 N_Package_Declaration |
271 N_Generic_Declaration =>
272 Add_Node_Name (Specification (Node));
274 when N_Generic_Instantiation =>
275 Add_Node_Name (Defining_Unit_Name (Node));
277 when N_Package_Body =>
278 Add_Node_Name (Defining_Unit_Name (Node));
282 Add_Node_Name (Defining_Identifier (Node));
284 when N_Package_Renaming_Declaration =>
285 Add_Node_Name (Defining_Unit_Name (Node));
287 when N_Subprogram_Renaming_Declaration =>
288 Add_Node_Name (Specification (Node));
290 when N_Generic_Renaming_Declaration =>
291 Add_Node_Name (Defining_Unit_Name (Node));
293 when N_Subprogram_Body_Stub =>
294 Add_Node_Name (Get_Parent (Node));
296 Add_Node_Name (Specification (Node));
298 when N_Compilation_Unit =>
299 Add_Node_Name (Unit (Node));
301 when N_Package_Body_Stub =>
302 Add_Node_Name (Get_Parent (Node));
304 Add_Node_Name (Defining_Identifier (Node));
306 when N_Task_Body_Stub |
307 N_Protected_Body_Stub =>
308 Add_Node_Name (Get_Parent (Node));
310 Add_Node_Name (Defining_Identifier (Node));
313 Add_Node_Name (Name (Node));
315 Add_Node_Name (Proper_Body (Node));
317 when N_With_Clause =>
318 Add_Node_Name (Name (Node));
321 Add_Node_Name (Expression (First
322 (Pragma_Argument_Associations (Node))));
324 -- Tasks and protected stuff appear only in an error context,
325 -- but the error has been posted elsewhere, so we deal nicely
326 -- with these error situations here, and produce a reasonable
327 -- unit name using the defining identifier.
329 when N_Task_Type_Declaration |
330 N_Single_Task_Declaration |
331 N_Protected_Type_Declaration |
332 N_Single_Protected_Declaration =>
333 Add_Node_Name (Defining_Identifier (Node));
346 function Get_Parent (Node : Node_Id) return Node_Id is
350 while Nkind (N) /= N_Compilation_Unit loop
357 --------------------------------------------
358 -- Start of Processing for Get_Unit_Name --
359 --------------------------------------------
364 -- If we have Defining_Identifier, find the associated unit node
366 if Nkind (Node) = N_Defining_Identifier then
367 Node := Declaration_Node (Node);
369 -- If an expanded name, it is an already analyzed child unit, find
372 elsif Nkind (Node) = N_Expanded_Name then
373 Node := Declaration_Node (Entity (Node));
376 if Nkind (Node) = N_Package_Specification
377 or else Nkind (Node) in N_Subprogram_Specification
379 Node := Parent (Node);
382 -- Node points to the unit, so get its name and add proper suffix
384 Add_Node_Name (Node);
388 when N_Generic_Declaration |
389 N_Subprogram_Declaration |
390 N_Package_Declaration |
393 N_Generic_Instantiation |
394 N_Package_Renaming_Declaration |
395 N_Subprogram_Renaming_Declaration |
396 N_Generic_Renaming_Declaration |
397 N_Single_Task_Declaration |
398 N_Single_Protected_Declaration |
399 N_Task_Type_Declaration |
400 N_Protected_Type_Declaration =>
404 when N_Subprogram_Body |
411 N_Selected_Component =>
419 Name_Buffer (1 .. Unit_Name_Length) :=
420 Unit_Name_Buffer (1 .. Unit_Name_Length);
421 Name_Len := Unit_Name_Length;
426 --------------------------
427 -- Get_Unit_Name_String --
428 --------------------------
430 procedure Get_Unit_Name_String (N : Unit_Name_Type) is
431 Unit_Is_Body : Boolean;
434 Get_Decoded_Name_String (N);
435 Unit_Is_Body := Name_Buffer (Name_Len) = 'b';
436 Set_Casing (Identifier_Casing (Source_Index (Main_Unit)), Mixed_Case);
438 -- A special fudge, normally we don't have operator symbols present,
439 -- since it is always an error to do so. However, if we do, at this
440 -- stage it has the form:
444 -- and the %s or %b has already been eliminated so put 2 chars back
446 if Name_Buffer (1) = '"' then
447 Name_Len := Name_Len + 2;
450 -- Now adjust the %s or %b to (spec) or (body)
453 Name_Buffer (Name_Len - 1 .. Name_Len + 5) := " (body)";
455 Name_Buffer (Name_Len - 1 .. Name_Len + 5) := " (spec)";
458 for J in 1 .. Name_Len loop
459 if Name_Buffer (J) = '-' then
460 Name_Buffer (J) := '.';
464 Name_Len := Name_Len + (7 - 2);
465 end Get_Unit_Name_String;
471 function Is_Body_Name (N : Unit_Name_Type) return Boolean is
475 and then Name_Buffer (Name_Len - 1) = '%'
476 and then Name_Buffer (Name_Len) = 'b';
483 function Is_Child_Name (N : Unit_Name_Type) return Boolean is
490 while Name_Buffer (J) /= '.' loop
492 return False; -- not a child or subunit name
505 function Is_Spec_Name (N : Unit_Name_Type) return Boolean is
509 and then Name_Buffer (Name_Len - 1) = '%'
510 and then Name_Buffer (Name_Len) = 's';
513 -----------------------
514 -- Name_To_Unit_Name --
515 -----------------------
517 function Name_To_Unit_Name (N : Name_Id) return Unit_Name_Type is
520 Name_Buffer (Name_Len + 1) := '%';
521 Name_Buffer (Name_Len + 2) := 's';
522 Name_Len := Name_Len + 2;
524 end Name_To_Unit_Name;
531 (Old : Unit_Name_Type;
532 Newp : Unit_Name_Type)
533 return Unit_Name_Type
538 Get_Name_String (Old);
541 Child : String := Name_Buffer (1 .. Name_Len);
544 Get_Name_String (Newp);
545 Name_Len := Name_Len - 2;
548 while Child (P) /= '.' loop
552 while P <= Child'Last loop
553 Name_Len := Name_Len + 1;
554 Name_Buffer (Name_Len) := Child (P);
566 function Uname_Ge (Left, Right : Unit_Name_Type) return Boolean is
568 return Left = Right or else Uname_Gt (Left, Right);
575 function Uname_Gt (Left, Right : Unit_Name_Type) return Boolean is
577 return Left /= Right and then not Uname_Lt (Left, Right);
584 function Uname_Le (Left, Right : Unit_Name_Type) return Boolean is
586 return Left = Right or else Uname_Lt (Left, Right);
593 function Uname_Lt (Left, Right : Unit_Name_Type) return Boolean is
594 Left_Name : String (1 .. Hostparm.Max_Name_Length);
595 Left_Length : Natural;
596 Right_Name : String renames Name_Buffer;
597 Right_Length : Natural renames Name_Len;
601 pragma Warnings (Off, Right_Length);
602 -- Suppress warnings on Right_Length, used in pragma Assert
608 Get_Name_String (Left);
609 Left_Name (1 .. Name_Len + 1) := Name_Buffer (1 .. Name_Len + 1);
610 Left_Length := Name_Len;
611 Get_Name_String (Right);
615 exit when Left_Name (J) = '%';
617 if Right_Name (J) = '%' then
618 return False; -- left name is longer
621 pragma Assert (J <= Left_Length and then J <= Right_Length);
623 if Left_Name (J) /= Right_Name (J) then
624 return Left_Name (J) < Right_Name (J); -- parent names different
630 -- Come here pointing to % in left name
632 if Right_Name (J) /= '%' then
633 return True; -- right name is longer
636 -- Here the parent names are the same and specs sort low. If neither is
637 -- a spec, then we are comparing the same name and we want a result of
638 -- False in any case.
640 return Left_Name (J + 1) = 's';
643 ---------------------
644 -- Write_Unit_Name --
645 ---------------------
647 procedure Write_Unit_Name (N : Unit_Name_Type) is
649 Get_Unit_Name_String (N);
650 Write_Str (Name_Buffer (1 .. Name_Len));