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* options.c (gfc_handle_module_path_options): Fix buffer overrun.
[official-gcc.git] / gcc / ada / cstand.adb
blobb7d1c90eb5c4b45eddda26eae3d082f227ad6c26
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT COMPILER COMPONENTS --
4 -- --
5 -- C S T A N D --
6 -- --
7 -- B o d y --
8 -- --
9 -- Copyright (C) 1992-2004 Free Software Foundation, Inc. --
10 -- --
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. --
21 -- --
22 -- GNAT was originally developed by the GNAT team at New York University. --
23 -- Extensive contributions were provided by Ada Core Technologies Inc. --
24 -- --
25 ------------------------------------------------------------------------------
26
27 with Atree; use Atree;
28 with Csets; use Csets;
29 with Debug; use Debug;
30 with Einfo; use Einfo;
31 with Layout; use Layout;
32 with Namet; use Namet;
33 with Nlists; use Nlists;
34 with Nmake; use Nmake;
35 with Opt; use Opt;
36 with Output; use Output;
37 with Targparm; use Targparm;
38 with Tbuild; use Tbuild;
39 with Ttypes; use Ttypes;
40 with Ttypef; use Ttypef;
41 with Scn;
42 with Sem_Mech; use Sem_Mech;
43 with Sem_Util; use Sem_Util;
44 with Sinfo; use Sinfo;
45 with Snames; use Snames;
46 with Stand; use Stand;
47 with Uintp; use Uintp;
48 with Urealp; use Urealp;
49
50 package body CStand is
51
52 Stloc : constant Source_Ptr := Standard_Location;
53 Staloc : constant Source_Ptr := Standard_ASCII_Location;
54 -- Standard abbreviations used throughout this package
55
56 -----------------------
57 -- Local Subprograms --
58 -----------------------
59
60 procedure Build_Float_Type (E : Entity_Id; Siz : Int; Digs : Int);
61 -- Procedure to build standard predefined float base type. The first
62 -- parameter is the entity for the type, and the second parameter
63 -- is the size in bits. The third parameter is the digits value.
64
65 procedure Build_Signed_Integer_Type (E : Entity_Id; Siz : Int);
66 -- Procedure to build standard predefined signed integer subtype. The
67 -- first parameter is the entity for the subtype. The second parameter
68 -- is the size in bits. The corresponding base type is not built by
69 -- this routine but instead must be built by the caller where needed.
70
71 procedure Create_Operators;
72 -- Make entries for each of the predefined operators in Standard
73
74 procedure Create_Unconstrained_Base_Type
75 (E : Entity_Id;
76 K : Entity_Kind);
77 -- The predefined signed integer types are constrained subtypes which
78 -- must have a corresponding unconstrained base type. This type is almost
79 -- useless. The only place it has semantics is Subtypes_Statically_Match.
80 -- Consequently, we arrange for it to be identical apart from the setting
81 -- of the constrained bit. This routine takes an entity E for the Type,
82 -- copies it to estabish the base type, then resets the Ekind of the
83 -- original entity to K (the Ekind for the subtype). The Etype field of
84 -- E is set by the call (to point to the created base type entity), and
85 -- also the Is_Constrained flag of E is set.
86 --
87 -- To understand the exact requirement for this, see RM 3.5.4(11) which
88 -- makes it clear that Integer, for example, is constrained, with the
89 -- constraint bounds matching the bounds of the (unconstrained) base
90 -- type. The point is that Integer and Integer'Base have identical
91 -- bounds, but do not statically match, since a subtype with constraints
92 -- never matches a subtype with no constraints.
93
94 function Identifier_For (S : Standard_Entity_Type) return Node_Id;
95 -- Returns an identifier node with the same name as the defining
96 -- identifier corresponding to the given Standard_Entity_Type value
97
98 procedure Make_Component
99 (Rec : Entity_Id;
100 Typ : Entity_Id;
101 Nam : String);
102 -- Build a record component with the given type and name, and append to
103 -- the list of components of Rec.
104
105 function Make_Formal
106 (Typ : Entity_Id;
107 Formal_Name : String) return Entity_Id;
108 -- Construct entity for subprogram formal with given name and type
109
110 function Make_Integer (V : Uint) return Node_Id;
111 -- Builds integer literal with given value
112
113 procedure Make_Name (Id : Entity_Id; Nam : String);
114 -- Make an entry in the names table for Nam, and set as Chars field of Id
115
116 function New_Operator (Op : Name_Id; Typ : Entity_Id) return Entity_Id;
117 -- Build entity for standard operator with given name and type.
118
119 function New_Standard_Entity
120 (New_Node_Kind : Node_Kind := N_Defining_Identifier) return Entity_Id;
121 -- Builds a new entity for Standard
122
123 procedure Print_Standard;
124 -- Print representation of package Standard if switch set
125
126 procedure Set_Integer_Bounds
127 (Id : Entity_Id;
128 Typ : Entity_Id;
129 Lb : Uint;
130 Hb : Uint);
131 -- Procedure to set bounds for integer type or subtype. Id is the entity
132 -- whose bounds and type are to be set. The Typ parameter is the Etype
133 -- value for the entity (which will be the same as Id for all predefined
134 -- integer base types. The third and fourth parameters are the bounds.
135
136 ----------------------
137 -- Build_Float_Type --
138 ----------------------
139
140 procedure Build_Float_Type (E : Entity_Id; Siz : Int; Digs : Int) is
141 begin
142 Set_Type_Definition (Parent (E),
143 Make_Floating_Point_Definition (Stloc,
144 Digits_Expression => Make_Integer (UI_From_Int (Digs))));
145 Set_Ekind (E, E_Floating_Point_Type);
146 Set_Etype (E, E);
147 Init_Size (E, Siz);
148 Set_Prim_Alignment (E);
149 Init_Digits_Value (E, Digs);
150 Set_Float_Bounds (E);
151 Set_Is_Frozen (E);
152 Set_Is_Public (E);
153 Set_Size_Known_At_Compile_Time (E);
154 end Build_Float_Type;
155
156 -------------------------------
157 -- Build_Signed_Integer_Type --
158 -------------------------------
159
160 procedure Build_Signed_Integer_Type (E : Entity_Id; Siz : Int) is
161 U2Siz1 : constant Uint := 2 ** (Siz - 1);
162 Lbound : constant Uint := -U2Siz1;
163 Ubound : constant Uint := U2Siz1 - 1;
164
165 begin
166 Set_Type_Definition (Parent (E),
167 Make_Signed_Integer_Type_Definition (Stloc,
168 Low_Bound => Make_Integer (Lbound),
169 High_Bound => Make_Integer (Ubound)));
170
171 Set_Ekind (E, E_Signed_Integer_Type);
172 Set_Etype (E, E);
173 Init_Size (E, Siz);
174 Set_Prim_Alignment (E);
175 Set_Integer_Bounds (E, E, Lbound, Ubound);
176 Set_Is_Frozen (E);
177 Set_Is_Public (E);
178 Set_Is_Known_Valid (E);
179 Set_Size_Known_At_Compile_Time (E);
180 end Build_Signed_Integer_Type;
181
182 ----------------------
183 -- Create_Operators --
184 ----------------------
185
186 -- Each operator has an abbreviated signature. The formals have the names
187 -- LEFT and RIGHT. Their types are not actually used for resolution.
188
189 procedure Create_Operators is
190 Op_Node : Entity_Id;
191
192 -- Following list has two entries for concatenation, to include
193 -- explicitly the operation on wide strings.
194
195 Binary_Ops : constant array (S_Binary_Ops) of Name_Id :=
196 (Name_Op_Add, Name_Op_And, Name_Op_Concat, Name_Op_Concat,
197 Name_Op_Divide, Name_Op_Eq, Name_Op_Expon, Name_Op_Ge,
198 Name_Op_Gt, Name_Op_Le, Name_Op_Lt, Name_Op_Mod,
199 Name_Op_Multiply, Name_Op_Ne, Name_Op_Or, Name_Op_Rem,
200 Name_Op_Subtract, Name_Op_Xor);
201
202 Bin_Op_Types : constant array (S_Binary_Ops) of Entity_Id :=
203 (Universal_Integer, Standard_Boolean,
204 Standard_String, Standard_Wide_String,
205 Universal_Integer, Standard_Boolean,
206 Universal_Integer, Standard_Boolean,
207 Standard_Boolean, Standard_Boolean,
208 Standard_Boolean, Universal_Integer,
209 Universal_Integer, Standard_Boolean,
210 Standard_Boolean, Universal_Integer,
211 Universal_Integer, Standard_Boolean);
212
213 Unary_Ops : constant array (S_Unary_Ops) of Name_Id :=
214 (Name_Op_Abs, Name_Op_Subtract, Name_Op_Not, Name_Op_Add);
215
216 Unary_Op_Types : constant array (S_Unary_Ops) of Entity_Id :=
217 (Universal_Integer, Universal_Integer,
218 Standard_Boolean, Universal_Integer);
219
220 -- Corresponding to Abs, Minus, Not, and Plus.
221
222 begin
223 for J in S_Binary_Ops loop
224 Op_Node := New_Operator (Binary_Ops (J), Bin_Op_Types (J));
225 SE (J) := Op_Node;
226 Append_Entity (Make_Formal (Any_Type, "LEFT"), Op_Node);
227 Append_Entity (Make_Formal (Any_Type, "RIGHT"), Op_Node);
228 end loop;
229
230 for J in S_Unary_Ops loop
231 Op_Node := New_Operator (Unary_Ops (J), Unary_Op_Types (J));
232 SE (J) := Op_Node;
233 Append_Entity (Make_Formal (Any_Type, "RIGHT"), Op_Node);
234 end loop;
235
236 -- For concatenation, we create a separate operator for each
237 -- array type. This simplifies the resolution of the component-
238 -- component concatenation operation. In Standard, we set the types
239 -- of the formals for string and wide string concatenation.
240
241 Set_Etype (First_Entity (Standard_Op_Concat), Standard_String);
242 Set_Etype (Last_Entity (Standard_Op_Concat), Standard_String);
243
244 Set_Etype (First_Entity (Standard_Op_Concatw), Standard_Wide_String);
245 Set_Etype (Last_Entity (Standard_Op_Concatw), Standard_Wide_String);
246
247 end Create_Operators;
248
249 ---------------------
250 -- Create_Standard --
251 ---------------------
252
253 -- The tree for the package Standard is prefixed to all compilations.
254 -- Several entities required by semantic analysis are denoted by global
255 -- variables that are initialized to point to the corresponding
256 -- occurrences in STANDARD. The visible entities of STANDARD are
257 -- created here. The private entities defined in STANDARD are created
258 -- by Initialize_Standard in the semantics module.
259
260 procedure Create_Standard is
261 Decl_S : constant List_Id := New_List;
262 -- List of declarations in Standard
263
264 Decl_A : constant List_Id := New_List;
265 -- List of declarations in ASCII
266
267 Decl : Node_Id;
268 Pspec : Node_Id;
269 Tdef_Node : Node_Id;
270 Ident_Node : Node_Id;
271 Ccode : Char_Code;
272 E_Id : Entity_Id;
273 R_Node : Node_Id;
274 B_Node : Node_Id;
275
276 procedure Build_Exception (S : Standard_Entity_Type);
277 -- Procedure to declare given entity as an exception
278
279 ---------------------
280 -- Build_Exception --
281 ---------------------
282
283 procedure Build_Exception (S : Standard_Entity_Type) is
284 begin
285 Set_Ekind (Standard_Entity (S), E_Exception);
286 Set_Etype (Standard_Entity (S), Standard_Exception_Type);
287 Set_Exception_Code (Standard_Entity (S), Uint_0);
288 Set_Is_Public (Standard_Entity (S), True);
289
290 Decl :=
291 Make_Exception_Declaration (Stloc,
292 Defining_Identifier => Standard_Entity (S));
293 Append (Decl, Decl_S);
294 end Build_Exception;
295
296 -- Start of processing for Create_Standard
297
298 begin
299 -- Initialize scanner for internal scans of literals
300
301 Scn.Initialize_Scanner (No_Unit, Internal_Source_File);
302
303 -- First step is to create defining identifiers for each entity
304
305 for S in Standard_Entity_Type loop
306 declare
307 S_Name : constant String := Standard_Entity_Type'Image (S);
308 -- Name of entity (note we skip S_ at the start)
309
310 Ident_Node : Node_Id;
311 -- Defining identifier node
312
313 begin
314 Ident_Node := New_Standard_Entity;
315 Make_Name (Ident_Node, S_Name (3 .. S_Name'Length));
316 Standard_Entity (S) := Ident_Node;
317 end;
318 end loop;
319
320 -- Create package declaration node for package Standard
321
322 Standard_Package_Node := New_Node (N_Package_Declaration, Stloc);
323
324 Pspec := New_Node (N_Package_Specification, Stloc);
325 Set_Specification (Standard_Package_Node, Pspec);
326
327 Set_Defining_Unit_Name (Pspec, Standard_Standard);
328 Set_Visible_Declarations (Pspec, Decl_S);
329
330 Set_Ekind (Standard_Standard, E_Package);
331 Set_Is_Pure (Standard_Standard);
332 Set_Is_Compilation_Unit (Standard_Standard);
333
334 -- Create type declaration nodes for standard types
335
336 for S in S_Types loop
337 Decl := New_Node (N_Full_Type_Declaration, Stloc);
338 Set_Defining_Identifier (Decl, Standard_Entity (S));
339 Set_Is_Frozen (Standard_Entity (S));
340 Set_Is_Public (Standard_Entity (S));
341 Append (Decl, Decl_S);
342 end loop;
343
344 -- Create type definition node for type Boolean. The Size is set to
345 -- 1 as required by Ada 95 and current ARG interpretations for Ada/83.
346
347 -- Note: Object_Size of Boolean is 8. This means that we do NOT in
348 -- general know that Boolean variables have valid values, so we do
349 -- not set the Is_Known_Valid flag.
350
351 Tdef_Node := New_Node (N_Enumeration_Type_Definition, Stloc);
352 Set_Literals (Tdef_Node, New_List);
353 Append (Standard_False, Literals (Tdef_Node));
354 Append (Standard_True, Literals (Tdef_Node));
355 Set_Type_Definition (Parent (Standard_Boolean), Tdef_Node);
356
357 Set_Ekind (Standard_Boolean, E_Enumeration_Type);
358 Set_First_Literal (Standard_Boolean, Standard_False);
359 Set_Etype (Standard_Boolean, Standard_Boolean);
360 Init_Esize (Standard_Boolean, Standard_Character_Size);
361 Init_RM_Size (Standard_Boolean, 1);
362 Set_Prim_Alignment (Standard_Boolean);
363
364 Set_Is_Unsigned_Type (Standard_Boolean);
365 Set_Size_Known_At_Compile_Time (Standard_Boolean);
366
367 Set_Ekind (Standard_True, E_Enumeration_Literal);
368 Set_Etype (Standard_True, Standard_Boolean);
369 Set_Enumeration_Pos (Standard_True, Uint_1);
370 Set_Enumeration_Rep (Standard_True, Uint_1);
371 Set_Is_Known_Valid (Standard_True, True);
372
373 Set_Ekind (Standard_False, E_Enumeration_Literal);
374 Set_Etype (Standard_False, Standard_Boolean);
375 Set_Enumeration_Pos (Standard_False, Uint_0);
376 Set_Enumeration_Rep (Standard_False, Uint_0);
377 Set_Is_Known_Valid (Standard_False, True);
378
379 -- For the bounds of Boolean, we create a range node corresponding to
380
381 -- range False .. True
382
383 -- where the occurrences of the literals must point to the
384 -- corresponding definition.
385
386 R_Node := New_Node (N_Range, Stloc);
387 B_Node := New_Node (N_Identifier, Stloc);
388 Set_Chars (B_Node, Chars (Standard_False));
389 Set_Entity (B_Node, Standard_False);
390 Set_Etype (B_Node, Standard_Boolean);
391 Set_Is_Static_Expression (B_Node);
392 Set_Low_Bound (R_Node, B_Node);
393
394 B_Node := New_Node (N_Identifier, Stloc);
395 Set_Chars (B_Node, Chars (Standard_True));
396 Set_Entity (B_Node, Standard_True);
397 Set_Etype (B_Node, Standard_Boolean);
398 Set_Is_Static_Expression (B_Node);
399 Set_High_Bound (R_Node, B_Node);
400
401 Set_Scalar_Range (Standard_Boolean, R_Node);
402 Set_Etype (R_Node, Standard_Boolean);
403 Set_Parent (R_Node, Standard_Boolean);
404
405 -- Record entity identifiers for boolean literals in the
406 -- Boolean_Literals array, for easy reference during expansion.
407
408 Boolean_Literals := (False => Standard_False, True => Standard_True);
409
410 -- Create type definition nodes for predefined integer types
411
412 Build_Signed_Integer_Type
413 (Standard_Short_Short_Integer, Standard_Short_Short_Integer_Size);
414
415 Build_Signed_Integer_Type
416 (Standard_Short_Integer, Standard_Short_Integer_Size);
417
418 Build_Signed_Integer_Type
419 (Standard_Integer, Standard_Integer_Size);
420
421 declare
422 LIS : Nat;
423 begin
424 if Debug_Flag_M then
425 LIS := 64;
426 else
427 LIS := Standard_Long_Integer_Size;
428 end if;
429
430 Build_Signed_Integer_Type (Standard_Long_Integer, LIS);
431 end;
432
433 Build_Signed_Integer_Type
434 (Standard_Long_Long_Integer, Standard_Long_Long_Integer_Size);
435
436 Create_Unconstrained_Base_Type
437 (Standard_Short_Short_Integer, E_Signed_Integer_Subtype);
438
439 Create_Unconstrained_Base_Type
440 (Standard_Short_Integer, E_Signed_Integer_Subtype);
441
442 Create_Unconstrained_Base_Type
443 (Standard_Integer, E_Signed_Integer_Subtype);
444
445 Create_Unconstrained_Base_Type
446 (Standard_Long_Integer, E_Signed_Integer_Subtype);
447
448 Create_Unconstrained_Base_Type
449 (Standard_Long_Long_Integer, E_Signed_Integer_Subtype);
450
451 -- Create type definition nodes for predefined float types
452
453 Build_Float_Type
454 (Standard_Short_Float,
455 Standard_Short_Float_Size,
456 Standard_Short_Float_Digits);
457
458 Build_Float_Type
459 (Standard_Float,
460 Standard_Float_Size,
461 Standard_Float_Digits);
462
463 Build_Float_Type
464 (Standard_Long_Float,
465 Standard_Long_Float_Size,
466 Standard_Long_Float_Digits);
467
468 Build_Float_Type
469 (Standard_Long_Long_Float,
470 Standard_Long_Long_Float_Size,
471 Standard_Long_Long_Float_Digits);
472
473 -- Create type definition node for type Character. Note that we do not
474 -- set the Literals field, since type Character is handled with special
475 -- routine that do not need a literal list.
476
477 Tdef_Node := New_Node (N_Enumeration_Type_Definition, Stloc);
478 Set_Type_Definition (Parent (Standard_Character), Tdef_Node);
479
480 Set_Ekind (Standard_Character, E_Enumeration_Type);
481 Set_Etype (Standard_Character, Standard_Character);
482 Init_Esize (Standard_Character, Standard_Character_Size);
483 Init_RM_Size (Standard_Character, 8);
484 Set_Prim_Alignment (Standard_Character);
485
486 Set_Is_Unsigned_Type (Standard_Character);
487 Set_Is_Character_Type (Standard_Character);
488 Set_Is_Known_Valid (Standard_Character);
489 Set_Size_Known_At_Compile_Time (Standard_Character);
490
491 -- Create the bounds for type Character.
492
493 R_Node := New_Node (N_Range, Stloc);
494
495 -- Low bound for type Character (Standard.Nul)
496
497 B_Node := New_Node (N_Character_Literal, Stloc);
498 Set_Is_Static_Expression (B_Node);
499 Set_Chars (B_Node, No_Name);
500 Set_Char_Literal_Value (B_Node, 16#00#);
501 Set_Entity (B_Node, Empty);
502 Set_Etype (B_Node, Standard_Character);
503 Set_Low_Bound (R_Node, B_Node);
504
505 -- High bound for type Character
506
507 B_Node := New_Node (N_Character_Literal, Stloc);
508 Set_Is_Static_Expression (B_Node);
509 Set_Chars (B_Node, No_Name);
510 Set_Char_Literal_Value (B_Node, 16#FF#);
511 Set_Entity (B_Node, Empty);
512 Set_Etype (B_Node, Standard_Character);
513 Set_High_Bound (R_Node, B_Node);
514
515 Set_Scalar_Range (Standard_Character, R_Node);
516 Set_Etype (R_Node, Standard_Character);
517 Set_Parent (R_Node, Standard_Character);
518
519 -- Create type definition for type Wide_Character. Note that we do not
520 -- set the Literals field, since type Wide_Character is handled with
521 -- special routines that do not need a literal list.
522
523 Tdef_Node := New_Node (N_Enumeration_Type_Definition, Stloc);
524 Set_Type_Definition (Parent (Standard_Wide_Character), Tdef_Node);
525
526 Set_Ekind (Standard_Wide_Character, E_Enumeration_Type);
527 Set_Etype (Standard_Wide_Character, Standard_Wide_Character);
528 Init_Size (Standard_Wide_Character, Standard_Wide_Character_Size);
529
530 Set_Prim_Alignment (Standard_Wide_Character);
531 Set_Is_Unsigned_Type (Standard_Wide_Character);
532 Set_Is_Character_Type (Standard_Wide_Character);
533 Set_Is_Known_Valid (Standard_Wide_Character);
534 Set_Size_Known_At_Compile_Time (Standard_Wide_Character);
535
536 -- Create the bounds for type Wide_Character.
537
538 R_Node := New_Node (N_Range, Stloc);
539
540 -- Low bound for type Wide_Character
541
542 B_Node := New_Node (N_Character_Literal, Stloc);
543 Set_Is_Static_Expression (B_Node);
544 Set_Chars (B_Node, No_Name); -- ???
545 Set_Char_Literal_Value (B_Node, 16#0000#);
546 Set_Entity (B_Node, Empty);
547 Set_Etype (B_Node, Standard_Wide_Character);
548 Set_Low_Bound (R_Node, B_Node);
549
550 -- High bound for type Wide_Character
551
552 B_Node := New_Node (N_Character_Literal, Stloc);
553 Set_Is_Static_Expression (B_Node);
554 Set_Chars (B_Node, No_Name); -- ???
555 Set_Char_Literal_Value (B_Node, 16#FFFF#);
556 Set_Entity (B_Node, Empty);
557 Set_Etype (B_Node, Standard_Wide_Character);
558 Set_High_Bound (R_Node, B_Node);
559
560 Set_Scalar_Range (Standard_Wide_Character, R_Node);
561 Set_Etype (R_Node, Standard_Wide_Character);
562 Set_Parent (R_Node, Standard_Wide_Character);
563
564 -- Create type definition node for type String
565
566 Tdef_Node := New_Node (N_Unconstrained_Array_Definition, Stloc);
567
568 declare
569 CompDef_Node : Node_Id;
570 begin
571 CompDef_Node := New_Node (N_Component_Definition, Stloc);
572 Set_Aliased_Present (CompDef_Node, False);
573 Set_Access_Definition (CompDef_Node, Empty);
574 Set_Subtype_Indication (CompDef_Node, Identifier_For (S_Character));
575 Set_Component_Definition (Tdef_Node, CompDef_Node);
576 end;
577
578 Set_Subtype_Marks (Tdef_Node, New_List);
579 Append (Identifier_For (S_Positive), Subtype_Marks (Tdef_Node));
580 Set_Type_Definition (Parent (Standard_String), Tdef_Node);
581
582 Set_Ekind (Standard_String, E_String_Type);
583 Set_Etype (Standard_String, Standard_String);
584 Set_Component_Type (Standard_String, Standard_Character);
585 Set_Component_Size (Standard_String, Uint_8);
586 Init_Size_Align (Standard_String);
587
588 -- Set index type of String
589
590 E_Id := First
591 (Subtype_Marks (Type_Definition (Parent (Standard_String))));
592 Set_First_Index (Standard_String, E_Id);
593 Set_Entity (E_Id, Standard_Positive);
594 Set_Etype (E_Id, Standard_Positive);
595
596 -- Create type definition node for type Wide_String
597
598 Tdef_Node := New_Node (N_Unconstrained_Array_Definition, Stloc);
599 declare
600 CompDef_Node : Node_Id;
601 begin
602 CompDef_Node := New_Node (N_Component_Definition, Stloc);
603 Set_Aliased_Present (CompDef_Node, False);
604 Set_Access_Definition (CompDef_Node, Empty);
605 Set_Subtype_Indication (CompDef_Node,
606 Identifier_For (S_Wide_Character));
607 Set_Component_Definition (Tdef_Node, CompDef_Node);
608 end;
609 Set_Subtype_Marks (Tdef_Node, New_List);
610 Append (Identifier_For (S_Positive), Subtype_Marks (Tdef_Node));
611 Set_Type_Definition (Parent (Standard_Wide_String), Tdef_Node);
612
613 Set_Ekind (Standard_Wide_String, E_String_Type);
614 Set_Etype (Standard_Wide_String, Standard_Wide_String);
615 Set_Component_Type (Standard_Wide_String, Standard_Wide_Character);
616 Set_Component_Size (Standard_Wide_String, Uint_16);
617 Init_Size_Align (Standard_Wide_String);
618
619 -- Set index type of Wide_String
620
621 E_Id := First
622 (Subtype_Marks (Type_Definition (Parent (Standard_Wide_String))));
623 Set_First_Index (Standard_Wide_String, E_Id);
624 Set_Entity (E_Id, Standard_Positive);
625 Set_Etype (E_Id, Standard_Positive);
626
627 -- Create subtype declaration for Natural
628
629 Decl := New_Node (N_Subtype_Declaration, Stloc);
630 Set_Defining_Identifier (Decl, Standard_Natural);
631 Set_Subtype_Indication (Decl,
632 New_Occurrence_Of (Standard_Integer, Stloc));
633 Append (Decl, Decl_S);
634
635 Set_Ekind (Standard_Natural, E_Signed_Integer_Subtype);
636 Set_Etype (Standard_Natural, Base_Type (Standard_Integer));
637 Init_Esize (Standard_Natural, Standard_Integer_Size);
638 Init_RM_Size (Standard_Natural, Standard_Integer_Size - 1);
639 Set_Prim_Alignment (Standard_Natural);
640 Set_Size_Known_At_Compile_Time
641 (Standard_Natural);
642 Set_Integer_Bounds (Standard_Natural,
643 Typ => Base_Type (Standard_Integer),
644 Lb => Uint_0,
645 Hb => Intval (High_Bound (Scalar_Range (Standard_Integer))));
646 Set_Is_Constrained (Standard_Natural);
647 Set_Is_Frozen (Standard_Natural);
648 Set_Is_Public (Standard_Natural);
649
650 -- Create subtype declaration for Positive
651
652 Decl := New_Node (N_Subtype_Declaration, Stloc);
653 Set_Defining_Identifier (Decl, Standard_Positive);
654 Set_Subtype_Indication (Decl,
655 New_Occurrence_Of (Standard_Integer, Stloc));
656 Append (Decl, Decl_S);
657
658 Set_Ekind (Standard_Positive, E_Signed_Integer_Subtype);
659 Set_Etype (Standard_Positive, Base_Type (Standard_Integer));
660 Init_Esize (Standard_Positive, Standard_Integer_Size);
661 Init_RM_Size (Standard_Positive, Standard_Integer_Size - 1);
662 Set_Prim_Alignment (Standard_Positive);
663
664 Set_Size_Known_At_Compile_Time (Standard_Positive);
665
666 Set_Integer_Bounds (Standard_Positive,
667 Typ => Base_Type (Standard_Integer),
668 Lb => Uint_1,
669 Hb => Intval (High_Bound (Scalar_Range (Standard_Integer))));
670 Set_Is_Constrained (Standard_Positive);
671 Set_Is_Frozen (Standard_Positive);
672 Set_Is_Public (Standard_Positive);
673
674 -- Create declaration for package ASCII
675
676 Decl := New_Node (N_Package_Declaration, Stloc);
677 Append (Decl, Decl_S);
678
679 Pspec := New_Node (N_Package_Specification, Stloc);
680 Set_Specification (Decl, Pspec);
681
682 Set_Defining_Unit_Name (Pspec, Standard_Entity (S_ASCII));
683 Set_Ekind (Standard_Entity (S_ASCII), E_Package);
684 Set_Visible_Declarations (Pspec, Decl_A);
685
686 -- Create control character definitions in package ASCII. Note that
687 -- the character literal entries created here correspond to literal
688 -- values that are impossible in the source, but can be represented
689 -- internally with no difficulties.
690
691 Ccode := 16#00#;
692
693 for S in S_ASCII_Names loop
694 Decl := New_Node (N_Object_Declaration, Staloc);
695 Set_Constant_Present (Decl, True);
696
697 declare
698 A_Char : constant Entity_Id := Standard_Entity (S);
699 Expr_Decl : Node_Id;
700
701 begin
702 Set_Sloc (A_Char, Staloc);
703 Set_Ekind (A_Char, E_Constant);
704 Set_Never_Set_In_Source (A_Char, True);
705 Set_Is_True_Constant (A_Char, True);
706 Set_Etype (A_Char, Standard_Character);
707 Set_Scope (A_Char, Standard_Entity (S_ASCII));
708 Set_Is_Immediately_Visible (A_Char, False);
709 Set_Is_Public (A_Char, True);
710 Set_Is_Known_Valid (A_Char, True);
711
712 Append_Entity (A_Char, Standard_Entity (S_ASCII));
713 Set_Defining_Identifier (Decl, A_Char);
714
715 Set_Object_Definition (Decl, Identifier_For (S_Character));
716 Expr_Decl := New_Node (N_Character_Literal, Staloc);
717 Set_Expression (Decl, Expr_Decl);
718
719 Set_Is_Static_Expression (Expr_Decl);
720 Set_Chars (Expr_Decl, No_Name);
721 Set_Etype (Expr_Decl, Standard_Character);
722 Set_Char_Literal_Value (Expr_Decl, Ccode);
723 end;
724
725 Append (Decl, Decl_A);
726
727 -- Increment character code, dealing with non-contiguities
728
729 Ccode := Ccode + 1;
730
731 if Ccode = 16#20# then
732 Ccode := 16#21#;
733 elsif Ccode = 16#27# then
734 Ccode := 16#3A#;
735 elsif Ccode = 16#3C# then
736 Ccode := 16#3F#;
737 elsif Ccode = 16#41# then
738 Ccode := 16#5B#;
739 end if;
740 end loop;
741
742 -- Create semantic phase entities
743
744 Standard_Void_Type := New_Standard_Entity;
745 Set_Ekind (Standard_Void_Type, E_Void);
746 Set_Etype (Standard_Void_Type, Standard_Void_Type);
747 Set_Scope (Standard_Void_Type, Standard_Standard);
748 Make_Name (Standard_Void_Type, "_void_type");
749
750 -- The type field of packages is set to void
751
752 Set_Etype (Standard_Standard, Standard_Void_Type);
753 Set_Etype (Standard_ASCII, Standard_Void_Type);
754
755 -- Standard_A_String is actually used in generated code, so it has a
756 -- type name that is reasonable, but does not overlap any Ada name.
757
758 Standard_A_String := New_Standard_Entity;
759 Set_Ekind (Standard_A_String, E_Access_Type);
760 Set_Scope (Standard_A_String, Standard_Standard);
761 Set_Etype (Standard_A_String, Standard_A_String);
762
763 if Debug_Flag_6 then
764 Init_Size (Standard_A_String, System_Address_Size);
765 else
766 Init_Size (Standard_A_String, System_Address_Size * 2);
767 end if;
768
769 Init_Alignment (Standard_A_String);
770
771 Set_Directly_Designated_Type
772 (Standard_A_String, Standard_String);
773 Make_Name (Standard_A_String, "access_string");
774
775 Standard_A_Char := New_Standard_Entity;
776 Set_Ekind (Standard_A_Char, E_Access_Type);
777 Set_Scope (Standard_A_Char, Standard_Standard);
778 Set_Etype (Standard_A_Char, Standard_A_String);
779 Init_Size (Standard_A_Char, System_Address_Size);
780 Set_Prim_Alignment (Standard_A_Char);
781
782 Set_Directly_Designated_Type (Standard_A_Char, Standard_Character);
783 Make_Name (Standard_A_Char, "access_character");
784
785 -- Note on type names. The type names for the following special types
786 -- are constructed so that they will look reasonable should they ever
787 -- appear in error messages etc, although in practice the use of the
788 -- special insertion character } for types results in special handling
789 -- of these type names in any case. The blanks in these names would
790 -- trouble in Gigi, but that's OK here, since none of these types
791 -- should ever get through to Gigi! Attributes of these types are
792 -- filled out to minimize problems with cascaded errors (for example,
793 -- Any_Integer is given reasonable and consistent type and size values)
794
795 Any_Type := New_Standard_Entity;
796 Decl := New_Node (N_Full_Type_Declaration, Stloc);
797 Set_Defining_Identifier (Decl, Any_Type);
798 Set_Scope (Any_Type, Standard_Standard);
799 Build_Signed_Integer_Type (Any_Type, Standard_Integer_Size);
800 Make_Name (Any_Type, "any type");
801
802 Any_Id := New_Standard_Entity;
803 Set_Ekind (Any_Id, E_Variable);
804 Set_Scope (Any_Id, Standard_Standard);
805 Set_Etype (Any_Id, Any_Type);
806 Init_Size_Align (Any_Id);
807 Make_Name (Any_Id, "any id");
808
809 Any_Access := New_Standard_Entity;
810 Set_Ekind (Any_Access, E_Access_Type);
811 Set_Scope (Any_Access, Standard_Standard);
812 Set_Etype (Any_Access, Any_Access);
813 Init_Size (Any_Access, System_Address_Size);
814 Set_Prim_Alignment (Any_Access);
815 Make_Name (Any_Access, "an access type");
816
817 Any_Character := New_Standard_Entity;
818 Set_Ekind (Any_Character, E_Enumeration_Type);
819 Set_Scope (Any_Character, Standard_Standard);
820 Set_Etype (Any_Character, Any_Character);
821 Set_Is_Unsigned_Type (Any_Character);
822 Set_Is_Character_Type (Any_Character);
823 Init_Esize (Any_Character, Standard_Character_Size);
824 Init_RM_Size (Any_Character, 8);
825 Set_Prim_Alignment (Any_Character);
826 Set_Scalar_Range (Any_Character, Scalar_Range (Standard_Character));
827 Make_Name (Any_Character, "a character type");
828
829 Any_Array := New_Standard_Entity;
830 Set_Ekind (Any_Array, E_String_Type);
831 Set_Scope (Any_Array, Standard_Standard);
832 Set_Etype (Any_Array, Any_Array);
833 Set_Component_Type (Any_Array, Any_Character);
834 Init_Size_Align (Any_Array);
835 Make_Name (Any_Array, "an array type");
836
837 Any_Boolean := New_Standard_Entity;
838 Set_Ekind (Any_Boolean, E_Enumeration_Type);
839 Set_Scope (Any_Boolean, Standard_Standard);
840 Set_Etype (Any_Boolean, Standard_Boolean);
841 Init_Esize (Any_Boolean, Standard_Character_Size);
842 Init_RM_Size (Any_Boolean, 1);
843 Set_Prim_Alignment (Any_Boolean);
844 Set_Is_Unsigned_Type (Any_Boolean);
845 Set_Scalar_Range (Any_Boolean, Scalar_Range (Standard_Boolean));
846 Make_Name (Any_Boolean, "a boolean type");
847
848 Any_Composite := New_Standard_Entity;
849 Set_Ekind (Any_Composite, E_Array_Type);
850 Set_Scope (Any_Composite, Standard_Standard);
851 Set_Etype (Any_Composite, Any_Composite);
852 Set_Component_Size (Any_Composite, Uint_0);
853 Set_Component_Type (Any_Composite, Standard_Integer);
854 Init_Size_Align (Any_Composite);
855 Make_Name (Any_Composite, "a composite type");
856
857 Any_Discrete := New_Standard_Entity;
858 Set_Ekind (Any_Discrete, E_Signed_Integer_Type);
859 Set_Scope (Any_Discrete, Standard_Standard);
860 Set_Etype (Any_Discrete, Any_Discrete);
861 Init_Size (Any_Discrete, Standard_Integer_Size);
862 Set_Prim_Alignment (Any_Discrete);
863 Make_Name (Any_Discrete, "a discrete type");
864
865 Any_Fixed := New_Standard_Entity;
866 Set_Ekind (Any_Fixed, E_Ordinary_Fixed_Point_Type);
867 Set_Scope (Any_Fixed, Standard_Standard);
868 Set_Etype (Any_Fixed, Any_Fixed);
869 Init_Size (Any_Fixed, Standard_Integer_Size);
870 Set_Prim_Alignment (Any_Fixed);
871 Make_Name (Any_Fixed, "a fixed-point type");
872
873 Any_Integer := New_Standard_Entity;
874 Set_Ekind (Any_Integer, E_Signed_Integer_Type);
875 Set_Scope (Any_Integer, Standard_Standard);
876 Set_Etype (Any_Integer, Standard_Long_Long_Integer);
877 Init_Size (Any_Integer, Standard_Long_Long_Integer_Size);
878 Set_Prim_Alignment (Any_Integer);
879
880 Set_Integer_Bounds
881 (Any_Integer,
882 Typ => Base_Type (Standard_Integer),
883 Lb => Uint_0,
884 Hb => Intval (High_Bound (Scalar_Range (Standard_Integer))));
885 Make_Name (Any_Integer, "an integer type");
886
887 Any_Modular := New_Standard_Entity;
888 Set_Ekind (Any_Modular, E_Modular_Integer_Type);
889 Set_Scope (Any_Modular, Standard_Standard);
890 Set_Etype (Any_Modular, Standard_Long_Long_Integer);
891 Init_Size (Any_Modular, Standard_Long_Long_Integer_Size);
892 Set_Prim_Alignment (Any_Modular);
893 Set_Is_Unsigned_Type (Any_Modular);
894 Make_Name (Any_Modular, "a modular type");
895
896 Any_Numeric := New_Standard_Entity;
897 Set_Ekind (Any_Numeric, E_Signed_Integer_Type);
898 Set_Scope (Any_Numeric, Standard_Standard);
899 Set_Etype (Any_Numeric, Standard_Long_Long_Integer);
900 Init_Size (Any_Numeric, Standard_Long_Long_Integer_Size);
901 Set_Prim_Alignment (Any_Numeric);
902 Make_Name (Any_Numeric, "a numeric type");
903
904 Any_Real := New_Standard_Entity;
905 Set_Ekind (Any_Real, E_Floating_Point_Type);
906 Set_Scope (Any_Real, Standard_Standard);
907 Set_Etype (Any_Real, Standard_Long_Long_Float);
908 Init_Size (Any_Real, Standard_Long_Long_Float_Size);
909 Set_Prim_Alignment (Any_Real);
910 Make_Name (Any_Real, "a real type");
911
912 Any_Scalar := New_Standard_Entity;
913 Set_Ekind (Any_Scalar, E_Signed_Integer_Type);
914 Set_Scope (Any_Scalar, Standard_Standard);
915 Set_Etype (Any_Scalar, Any_Scalar);
916 Init_Size (Any_Scalar, Standard_Integer_Size);
917 Set_Prim_Alignment (Any_Scalar);
918 Make_Name (Any_Scalar, "a scalar type");
919
920 Any_String := New_Standard_Entity;
921 Set_Ekind (Any_String, E_String_Type);
922 Set_Scope (Any_String, Standard_Standard);
923 Set_Etype (Any_String, Any_String);
924 Set_Component_Type (Any_String, Any_Character);
925 Init_Size_Align (Any_String);
926 Make_Name (Any_String, "a string type");
927
928 declare
929 Index : Node_Id;
930
931 begin
932 Index :=
933 Make_Range (Stloc,
934 Low_Bound => Make_Integer (Uint_0),
935 High_Bound => Make_Integer (Uint_2 ** Standard_Integer_Size));
936 Set_Etype (Index, Standard_Integer);
937 Set_First_Index (Any_String, Index);
938 end;
939
940 Standard_Integer_8 := New_Standard_Entity;
941 Decl := New_Node (N_Full_Type_Declaration, Stloc);
942 Set_Defining_Identifier (Decl, Standard_Integer_8);
943 Make_Name (Standard_Integer_8, "integer_8");
944 Set_Scope (Standard_Integer_8, Standard_Standard);
945 Build_Signed_Integer_Type (Standard_Integer_8, 8);
946
947 Standard_Integer_16 := New_Standard_Entity;
948 Decl := New_Node (N_Full_Type_Declaration, Stloc);
949 Set_Defining_Identifier (Decl, Standard_Integer_16);
950 Make_Name (Standard_Integer_16, "integer_16");
951 Set_Scope (Standard_Integer_16, Standard_Standard);
952 Build_Signed_Integer_Type (Standard_Integer_16, 16);
953
954 Standard_Integer_32 := New_Standard_Entity;
955 Decl := New_Node (N_Full_Type_Declaration, Stloc);
956 Set_Defining_Identifier (Decl, Standard_Integer_32);
957 Make_Name (Standard_Integer_32, "integer_32");
958 Set_Scope (Standard_Integer_32, Standard_Standard);
959 Build_Signed_Integer_Type (Standard_Integer_32, 32);
960
961 Standard_Integer_64 := New_Standard_Entity;
962 Decl := New_Node (N_Full_Type_Declaration, Stloc);
963 Set_Defining_Identifier (Decl, Standard_Integer_64);
964 Make_Name (Standard_Integer_64, "integer_64");
965 Set_Scope (Standard_Integer_64, Standard_Standard);
966 Build_Signed_Integer_Type (Standard_Integer_64, 64);
967
968 Standard_Unsigned := New_Standard_Entity;
969 Decl := New_Node (N_Full_Type_Declaration, Stloc);
970 Set_Defining_Identifier (Decl, Standard_Unsigned);
971 Make_Name (Standard_Unsigned, "unsigned");
972
973 Set_Ekind (Standard_Unsigned, E_Modular_Integer_Type);
974 Set_Scope (Standard_Unsigned, Standard_Standard);
975 Set_Etype (Standard_Unsigned, Standard_Unsigned);
976 Init_Size (Standard_Unsigned, Standard_Integer_Size);
977 Set_Prim_Alignment (Standard_Unsigned);
978 Set_Modulus (Standard_Unsigned,
979 Uint_2 ** Standard_Integer_Size);
980 Set_Is_Unsigned_Type (Standard_Unsigned);
981 Set_Size_Known_At_Compile_Time
982 (Standard_Unsigned);
983
984 R_Node := New_Node (N_Range, Stloc);
985 Set_Low_Bound (R_Node, Make_Integer (Uint_0));
986 Set_High_Bound (R_Node, Make_Integer (Modulus (Standard_Unsigned) - 1));
987 Set_Etype (Low_Bound (R_Node), Standard_Unsigned);
988 Set_Etype (High_Bound (R_Node), Standard_Unsigned);
989 Set_Scalar_Range (Standard_Unsigned, R_Node);
990
991 -- Note: universal integer and universal real are constructed as fully
992 -- formed signed numeric types, with parameters corresponding to the
993 -- longest runtime types (Long_Long_Integer and Long_Long_Float). This
994 -- allows Gigi to properly process references to universal types that
995 -- are not folded at compile time.
996
997 Universal_Integer := New_Standard_Entity;
998 Decl := New_Node (N_Full_Type_Declaration, Stloc);
999 Set_Defining_Identifier (Decl, Universal_Integer);
1000 Make_Name (Universal_Integer, "universal_integer");
1001 Set_Scope (Universal_Integer, Standard_Standard);
1002 Build_Signed_Integer_Type
1003 (Universal_Integer, Standard_Long_Long_Integer_Size);
1004
1005 Universal_Real := New_Standard_Entity;
1006 Decl := New_Node (N_Full_Type_Declaration, Stloc);
1007 Set_Defining_Identifier (Decl, Universal_Real);
1008 Make_Name (Universal_Real, "universal_real");
1009 Set_Scope (Universal_Real, Standard_Standard);
1010 Build_Float_Type
1011 (Universal_Real,
1012 Standard_Long_Long_Float_Size,
1013 Standard_Long_Long_Float_Digits);
1014
1015 -- Note: universal fixed, unlike universal integer and universal real,
1016 -- is never used at runtime, so it does not need to have bounds set.
1017
1018 Universal_Fixed := New_Standard_Entity;
1019 Decl := New_Node (N_Full_Type_Declaration, Stloc);
1020 Set_Defining_Identifier (Decl, Universal_Fixed);
1021 Make_Name (Universal_Fixed, "universal_fixed");
1022 Set_Ekind (Universal_Fixed, E_Ordinary_Fixed_Point_Type);
1023 Set_Etype (Universal_Fixed, Universal_Fixed);
1024 Set_Scope (Universal_Fixed, Standard_Standard);
1025 Init_Size (Universal_Fixed, Standard_Long_Long_Integer_Size);
1026 Set_Prim_Alignment (Universal_Fixed);
1027 Set_Size_Known_At_Compile_Time
1028 (Universal_Fixed);
1029
1030 -- Create type declaration for Duration, using a 64-bit size. The
1031 -- delta and size values depend on the mode set in system.ads.
1032
1033 Build_Duration : declare
1034 Dlo : Uint;
1035 Dhi : Uint;
1036 Delta_Val : Ureal;
1037
1038 begin
1039 -- In 32 bit mode, the size is 32 bits, and the delta and
1040 -- small values are set to 20 milliseconds (20.0**(10.0**(-3)).
1041
1042 if Duration_32_Bits_On_Target then
1043 Dlo := Intval (Type_Low_Bound (Standard_Integer_32));
1044 Dhi := Intval (Type_High_Bound (Standard_Integer_32));
1045 Delta_Val := UR_From_Components (UI_From_Int (20), Uint_3, 10);
1046
1047 -- In standard 64-bit mode, the size is 64-bits and the delta and
1048 -- amll values are set to nanoseconds (1.0**(10.0**(-9))
1049
1050 else
1051 Dlo := Intval (Type_Low_Bound (Standard_Integer_64));
1052 Dhi := Intval (Type_High_Bound (Standard_Integer_64));
1053 Delta_Val := UR_From_Components (Uint_1, Uint_9, 10);
1054 end if;
1055
1056 Tdef_Node := Make_Ordinary_Fixed_Point_Definition (Stloc,
1057 Delta_Expression => Make_Real_Literal (Stloc, Delta_Val),
1058 Real_Range_Specification =>
1059 Make_Real_Range_Specification (Stloc,
1060 Low_Bound => Make_Real_Literal (Stloc,
1061 Realval => Dlo * Delta_Val),
1062 High_Bound => Make_Real_Literal (Stloc,
1063 Realval => Dhi * Delta_Val)));
1064
1065 Set_Type_Definition (Parent (Standard_Duration), Tdef_Node);
1066
1067 Set_Ekind (Standard_Duration, E_Ordinary_Fixed_Point_Type);
1068 Set_Etype (Standard_Duration, Standard_Duration);
1069
1070 if Duration_32_Bits_On_Target then
1071 Init_Size (Standard_Duration, 32);
1072 else
1073 Init_Size (Standard_Duration, 64);
1074 end if;
1075
1076 Set_Prim_Alignment (Standard_Duration);
1077 Set_Delta_Value (Standard_Duration, Delta_Val);
1078 Set_Small_Value (Standard_Duration, Delta_Val);
1079 Set_Scalar_Range (Standard_Duration,
1080 Real_Range_Specification
1081 (Type_Definition (Parent (Standard_Duration))));
1082
1083 -- Normally it does not matter that nodes in package Standard are
1084 -- not marked as analyzed. The Scalar_Range of the fixed-point
1085 -- type Standard_Duration is an exception, because of the special
1086 -- test made in Freeze.Freeze_Fixed_Point_Type.
1087
1088 Set_Analyzed (Scalar_Range (Standard_Duration));
1089
1090 Set_Etype (Type_High_Bound (Standard_Duration), Standard_Duration);
1091 Set_Etype (Type_Low_Bound (Standard_Duration), Standard_Duration);
1092
1093 Set_Is_Static_Expression (Type_High_Bound (Standard_Duration));
1094 Set_Is_Static_Expression (Type_Low_Bound (Standard_Duration));
1095
1096 Set_Corresponding_Integer_Value
1097 (Type_High_Bound (Standard_Duration), Dhi);
1098
1099 Set_Corresponding_Integer_Value
1100 (Type_Low_Bound (Standard_Duration), Dlo);
1101
1102 Set_Size_Known_At_Compile_Time (Standard_Duration);
1103 end Build_Duration;
1104
1105 -- Build standard exception type. Note that the type name here is
1106 -- actually used in the generated code, so it must be set correctly
1107
1108 -- ??? Also note that the Import_Code component is now declared
1109 -- as a System.Standard_Library.Exception_Code to enforce run-time
1110 -- library implementation consistency. It's too early here to resort
1111 -- to rtsfind to get the proper node for that type, so we use the
1112 -- closest possible available type node at hand instead. We should
1113 -- probably be fixing this up at some point.
1114
1115 Standard_Exception_Type := New_Standard_Entity;
1116 Set_Ekind (Standard_Exception_Type, E_Record_Type);
1117 Set_Etype (Standard_Exception_Type, Standard_Exception_Type);
1118 Set_Scope (Standard_Exception_Type, Standard_Standard);
1119 Set_Stored_Constraint
1120 (Standard_Exception_Type, No_Elist);
1121 Init_Size_Align (Standard_Exception_Type);
1122 Set_Size_Known_At_Compile_Time
1123 (Standard_Exception_Type, True);
1124 Make_Name (Standard_Exception_Type, "exception");
1125
1126 Make_Component (Standard_Exception_Type, Standard_Boolean,
1127 "Not_Handled_By_Others");
1128 Make_Component (Standard_Exception_Type, Standard_Character, "Lang");
1129 Make_Component (Standard_Exception_Type, Standard_Natural,
1130 "Name_Length");
1131 Make_Component (Standard_Exception_Type, Standard_A_Char,
1132 "Full_Name");
1133 Make_Component (Standard_Exception_Type, Standard_A_Char,
1134 "HTable_Ptr");
1135 Make_Component (Standard_Exception_Type, Standard_Unsigned,
1136 "Import_Code");
1137 Make_Component (Standard_Exception_Type, Standard_A_Char,
1138 "Raise_Hook");
1139 -- Build tree for record declaration, for use by the back-end.
1140
1141 declare
1142 Comp_List : List_Id;
1143 Comp : Entity_Id;
1144
1145 begin
1146 Comp := First_Entity (Standard_Exception_Type);
1147 Comp_List := New_List;
1148
1149 while Present (Comp) loop
1150 Append (
1151 Make_Component_Declaration (Stloc,
1152 Defining_Identifier => Comp,
1153 Component_Definition =>
1154 Make_Component_Definition (Stloc,
1155 Aliased_Present => False,
1156 Subtype_Indication => New_Occurrence_Of (Etype (Comp),
1157 Stloc))),
1158 Comp_List);
1159
1160 Next_Entity (Comp);
1161 end loop;
1162
1163 Decl := Make_Full_Type_Declaration (Stloc,
1164 Defining_Identifier => Standard_Exception_Type,
1165 Type_Definition =>
1166 Make_Record_Definition (Stloc,
1167 End_Label => Empty,
1168 Component_List =>
1169 Make_Component_List (Stloc,
1170 Component_Items => Comp_List)));
1171 end;
1172
1173 Append (Decl, Decl_S);
1174
1175 Layout_Type (Standard_Exception_Type);
1176
1177 -- Create declarations of standard exceptions
1178
1179 Build_Exception (S_Constraint_Error);
1180 Build_Exception (S_Program_Error);
1181 Build_Exception (S_Storage_Error);
1182 Build_Exception (S_Tasking_Error);
1183
1184 -- Numeric_Error is a normal exception in Ada 83, but in Ada 95
1185 -- it is a renaming of Constraint_Error
1186
1187 if Ada_83 then
1188 Build_Exception (S_Numeric_Error);
1189
1190 else
1191 Decl := New_Node (N_Exception_Renaming_Declaration, Stloc);
1192 E_Id := Standard_Entity (S_Numeric_Error);
1193
1194 Set_Ekind (E_Id, E_Exception);
1195 Set_Exception_Code (E_Id, Uint_0);
1196 Set_Etype (E_Id, Standard_Exception_Type);
1197 Set_Is_Public (E_Id);
1198 Set_Renamed_Entity (E_Id, Standard_Entity (S_Constraint_Error));
1199
1200 Set_Defining_Identifier (Decl, E_Id);
1201 Append (Decl, Decl_S);
1202
1203 Ident_Node := New_Node (N_Identifier, Stloc);
1204 Set_Chars (Ident_Node, Chars (Standard_Entity (S_Constraint_Error)));
1205 Set_Entity (Ident_Node, Standard_Entity (S_Constraint_Error));
1206 Set_Name (Decl, Ident_Node);
1207 end if;
1208
1209 -- Abort_Signal is an entity that does not get made visible
1210
1211 Abort_Signal := New_Standard_Entity;
1212 Set_Chars (Abort_Signal, Name_uAbort_Signal);
1213 Set_Ekind (Abort_Signal, E_Exception);
1214 Set_Exception_Code (Abort_Signal, Uint_0);
1215 Set_Etype (Abort_Signal, Standard_Exception_Type);
1216 Set_Scope (Abort_Signal, Standard_Standard);
1217 Set_Is_Public (Abort_Signal, True);
1218 Decl :=
1219 Make_Exception_Declaration (Stloc,
1220 Defining_Identifier => Abort_Signal);
1221
1222 -- Create defining identifiers for shift operator entities. Note
1223 -- that these entities are used only for marking shift operators
1224 -- generated internally, and hence need no structure, just a name
1225 -- and a unique identity.
1226
1227 Standard_Op_Rotate_Left := New_Standard_Entity;
1228 Set_Chars (Standard_Op_Rotate_Left, Name_Rotate_Left);
1229 Set_Ekind (Standard_Op_Rotate_Left, E_Operator);
1230
1231 Standard_Op_Rotate_Right := New_Standard_Entity;
1232 Set_Chars (Standard_Op_Rotate_Right, Name_Rotate_Right);
1233 Set_Ekind (Standard_Op_Rotate_Right, E_Operator);
1234
1235 Standard_Op_Shift_Left := New_Standard_Entity;
1236 Set_Chars (Standard_Op_Shift_Left, Name_Shift_Left);
1237 Set_Ekind (Standard_Op_Shift_Left, E_Operator);
1238
1239 Standard_Op_Shift_Right := New_Standard_Entity;
1240 Set_Chars (Standard_Op_Shift_Right, Name_Shift_Right);
1241 Set_Ekind (Standard_Op_Shift_Right, E_Operator);
1242
1243 Standard_Op_Shift_Right_Arithmetic := New_Standard_Entity;
1244 Set_Chars (Standard_Op_Shift_Right_Arithmetic,
1245 Name_Shift_Right_Arithmetic);
1246 Set_Ekind (Standard_Op_Shift_Right_Arithmetic,
1247 E_Operator);
1248
1249 -- Create standard operator declarations
1250
1251 Create_Operators;
1252
1253 -- Initialize visibility table with entities in Standard
1254
1255 for E in Standard_Entity_Type loop
1256 if Ekind (Standard_Entity (E)) /= E_Operator then
1257 Set_Name_Entity_Id
1258 (Chars (Standard_Entity (E)), Standard_Entity (E));
1259 Set_Homonym (Standard_Entity (E), Empty);
1260 end if;
1261
1262 if E not in S_ASCII_Names then
1263 Set_Scope (Standard_Entity (E), Standard_Standard);
1264 Set_Is_Immediately_Visible (Standard_Entity (E));
1265 end if;
1266 end loop;
1267
1268 -- The predefined package Standard itself does not have a scope;
1269 -- it is the only entity in the system not to have one, and this
1270 -- is what identifies the package to Gigi.
1271
1272 Set_Scope (Standard_Standard, Empty);
1273
1274 -- Set global variables indicating last Id values and version
1275
1276 Last_Standard_Node_Id := Last_Node_Id;
1277 Last_Standard_List_Id := Last_List_Id;
1278
1279 -- The Error node has an Etype of Any_Type to help error recovery
1280
1281 Set_Etype (Error, Any_Type);
1282
1283 -- Print representation of standard if switch set
1284
1285 if Opt.Print_Standard then
1286 Print_Standard;
1287 end if;
1288 end Create_Standard;
1289
1290 ------------------------------------
1291 -- Create_Unconstrained_Base_Type --
1292 ------------------------------------
1293
1294 procedure Create_Unconstrained_Base_Type
1295 (E : Entity_Id;
1296 K : Entity_Kind)
1297 is
1298 New_Ent : constant Entity_Id := New_Copy (E);
1299
1300 begin
1301 Set_Ekind (E, K);
1302 Set_Is_Constrained (E, True);
1303 Set_Is_First_Subtype (E, True);
1304 Set_Etype (E, New_Ent);
1305
1306 Append_Entity (New_Ent, Standard_Standard);
1307 Set_Is_Constrained (New_Ent, False);
1308 Set_Etype (New_Ent, New_Ent);
1309 Set_Is_Known_Valid (New_Ent, True);
1310
1311 if K = E_Signed_Integer_Subtype then
1312 Set_Etype (Low_Bound (Scalar_Range (E)), New_Ent);
1313 Set_Etype (High_Bound (Scalar_Range (E)), New_Ent);
1314 end if;
1315
1316 end Create_Unconstrained_Base_Type;
1317
1318 --------------------
1319 -- Identifier_For --
1320 --------------------
1321
1322 function Identifier_For (S : Standard_Entity_Type) return Node_Id is
1323 Ident_Node : Node_Id;
1324
1325 begin
1326 Ident_Node := New_Node (N_Identifier, Stloc);
1327 Set_Chars (Ident_Node, Chars (Standard_Entity (S)));
1328 return Ident_Node;
1329 end Identifier_For;
1330
1331 --------------------
1332 -- Make_Component --
1333 --------------------
1334
1335 procedure Make_Component
1336 (Rec : Entity_Id;
1337 Typ : Entity_Id;
1338 Nam : String)
1339 is
1340 Id : constant Entity_Id := New_Standard_Entity;
1341
1342 begin
1343 Set_Ekind (Id, E_Component);
1344 Set_Etype (Id, Typ);
1345 Set_Scope (Id, Rec);
1346 Init_Component_Location (Id);
1347
1348 Set_Original_Record_Component (Id, Id);
1349 Make_Name (Id, Nam);
1350 Append_Entity (Id, Rec);
1351 end Make_Component;
1352
1353 -----------------
1354 -- Make_Formal --
1355 -----------------
1356
1357 function Make_Formal
1358 (Typ : Entity_Id;
1359 Formal_Name : String) return Entity_Id
1360 is
1361 Formal : Entity_Id;
1362
1363 begin
1364 Formal := New_Standard_Entity;
1365
1366 Set_Ekind (Formal, E_In_Parameter);
1367 Set_Mechanism (Formal, Default_Mechanism);
1368 Set_Scope (Formal, Standard_Standard);
1369 Set_Etype (Formal, Typ);
1370 Make_Name (Formal, Formal_Name);
1371
1372 return Formal;
1373 end Make_Formal;
1374
1375 ------------------
1376 -- Make_Integer --
1377 ------------------
1378
1379 function Make_Integer (V : Uint) return Node_Id is
1380 N : constant Node_Id := Make_Integer_Literal (Stloc, V);
1381 begin
1382 Set_Is_Static_Expression (N);
1383 return N;
1384 end Make_Integer;
1385
1386 ---------------
1387 -- Make_Name --
1388 ---------------
1389
1390 procedure Make_Name (Id : Entity_Id; Nam : String) is
1391 begin
1392 for J in 1 .. Nam'Length loop
1393 Name_Buffer (J) := Fold_Lower (Nam (Nam'First + (J - 1)));
1394 end loop;
1395
1396 Name_Len := Nam'Length;
1397 Set_Chars (Id, Name_Find);
1398 end Make_Name;
1399
1400 ------------------
1401 -- New_Operator --
1402 ------------------
1403
1404 function New_Operator (Op : Name_Id; Typ : Entity_Id) return Entity_Id is
1405 Ident_Node : Entity_Id;
1406
1407 begin
1408 Ident_Node := Make_Defining_Identifier (Stloc, Op);
1409
1410 Set_Is_Pure (Ident_Node, True);
1411 Set_Ekind (Ident_Node, E_Operator);
1412 Set_Etype (Ident_Node, Typ);
1413 Set_Scope (Ident_Node, Standard_Standard);
1414 Set_Homonym (Ident_Node, Get_Name_Entity_Id (Op));
1415 Set_Convention (Ident_Node, Convention_Intrinsic);
1416
1417 Set_Is_Immediately_Visible (Ident_Node, True);
1418 Set_Is_Intrinsic_Subprogram (Ident_Node, True);
1419
1420 Set_Name_Entity_Id (Op, Ident_Node);
1421 Append_Entity (Ident_Node, Standard_Standard);
1422 return Ident_Node;
1423 end New_Operator;
1424
1425 -------------------------
1426 -- New_Standard_Entity --
1427 -------------------------
1428
1429 function New_Standard_Entity
1430 (New_Node_Kind : Node_Kind := N_Defining_Identifier) return Entity_Id
1431 is
1432 E : constant Entity_Id := New_Entity (New_Node_Kind, Stloc);
1433
1434 begin
1435 -- All standard entities are Pure and Public
1436
1437 Set_Is_Pure (E);
1438 Set_Is_Public (E);
1439
1440 -- All standard entity names are analyzed manually, and are thus
1441 -- frozen as soon as they are created.
1442
1443 Set_Is_Frozen (E);
1444
1445 -- Set debug information required for all standard types
1446
1447 Set_Needs_Debug_Info (E);
1448
1449 -- All standard entities are built with fully qualified names, so
1450 -- set the flag to prevent an abortive attempt at requalification!
1451
1452 Set_Has_Qualified_Name (E);
1453
1454 -- Return newly created entity to be completed by caller
1455
1456 return E;
1457 end New_Standard_Entity;
1458
1459 --------------------
1460 -- Print_Standard --
1461 --------------------
1462
1463 procedure Print_Standard is
1464
1465 procedure P (Item : String) renames Output.Write_Line;
1466 -- Short-hand, since we do a lot of line writes here!
1467
1468 procedure P_Int_Range (Size : Pos);
1469 -- Prints the range of an integer based on its Size
1470
1471 procedure P_Float_Range (Id : Entity_Id);
1472 -- Prints the bounds range for the given float type entity
1473
1474 -------------------
1475 -- P_Float_Range --
1476 -------------------
1477
1478 procedure P_Float_Range (Id : Entity_Id) is
1479 Digs : constant Nat := UI_To_Int (Digits_Value (Id));
1480
1481 begin
1482 Write_Str (" range ");
1483
1484 if Vax_Float (Id) then
1485 if Digs = VAXFF_Digits then
1486 Write_Str (VAXFF_First'Universal_Literal_String);
1487 Write_Str (" .. ");
1488 Write_Str (VAXFF_Last'Universal_Literal_String);
1489
1490 elsif Digs = VAXDF_Digits then
1491 Write_Str (VAXDF_First'Universal_Literal_String);
1492 Write_Str (" .. ");
1493 Write_Str (VAXDF_Last'Universal_Literal_String);
1494
1495 else
1496 pragma Assert (Digs = VAXGF_Digits);
1497
1498 Write_Str (VAXGF_First'Universal_Literal_String);
1499 Write_Str (" .. ");
1500 Write_Str (VAXGF_Last'Universal_Literal_String);
1501 end if;
1502
1503 elsif Is_AAMP_Float (Id) then
1504 if Digs = AAMPS_Digits then
1505 Write_Str (AAMPS_First'Universal_Literal_String);
1506 Write_Str (" .. ");
1507 Write_Str (AAMPS_Last'Universal_Literal_String);
1508
1509 else
1510 pragma Assert (Digs = AAMPL_Digits);
1511 Write_Str (AAMPL_First'Universal_Literal_String);
1512 Write_Str (" .. ");
1513 Write_Str (AAMPL_Last'Universal_Literal_String);
1514 end if;
1515
1516 elsif Digs = IEEES_Digits then
1517 Write_Str (IEEES_First'Universal_Literal_String);
1518 Write_Str (" .. ");
1519 Write_Str (IEEES_Last'Universal_Literal_String);
1520
1521 elsif Digs = IEEEL_Digits then
1522 Write_Str (IEEEL_First'Universal_Literal_String);
1523 Write_Str (" .. ");
1524 Write_Str (IEEEL_Last'Universal_Literal_String);
1525
1526 else
1527 pragma Assert (Digs = IEEEX_Digits);
1528
1529 Write_Str (IEEEX_First'Universal_Literal_String);
1530 Write_Str (" .. ");
1531 Write_Str (IEEEX_Last'Universal_Literal_String);
1532 end if;
1533
1534 Write_Str (";");
1535 Write_Eol;
1536 end P_Float_Range;
1537
1538 -----------------
1539 -- P_Int_Range --
1540 -----------------
1541
1542 procedure P_Int_Range (Size : Pos) is
1543 begin
1544 Write_Str (" is range -(2 **");
1545 Write_Int (Size - 1);
1546 Write_Str (")");
1547 Write_Str (" .. +(2 **");
1548 Write_Int (Size - 1);
1549 Write_Str (" - 1);");
1550 Write_Eol;
1551 end P_Int_Range;
1552
1553 -- Start of processing for Print_Standard
1554
1555 begin
1556 P ("-- Representation of package Standard");
1557 Write_Eol;
1558 P ("-- This is not accurate Ada, since new base types cannot be ");
1559 P ("-- created, but the listing shows the target dependent");
1560 P ("-- characteristics of the Standard types for this compiler");
1561 Write_Eol;
1562
1563 P ("package Standard is");
1564 P ("pragma Pure(Standard);");
1565 Write_Eol;
1566
1567 P (" type Boolean is (False, True);");
1568 P (" for Boolean'Size use 1;");
1569 P (" for Boolean use (False => 0, True => 1);");
1570 Write_Eol;
1571
1572 -- Integer types
1573
1574 Write_Str (" type Integer");
1575 P_Int_Range (Standard_Integer_Size);
1576 Write_Str (" for Integer'Size use ");
1577 Write_Int (Standard_Integer_Size);
1578 P (";");
1579 Write_Eol;
1580
1581 P (" subtype Natural is Integer range 0 .. Integer'Last;");
1582 P (" subtype Positive is Integer range 1 .. Integer'Last;");
1583 Write_Eol;
1584
1585 Write_Str (" type Short_Short_Integer");
1586 P_Int_Range (Standard_Short_Short_Integer_Size);
1587 Write_Str (" for Short_Short_Integer'Size use ");
1588 Write_Int (Standard_Short_Short_Integer_Size);
1589 P (";");
1590 Write_Eol;
1591
1592 Write_Str (" type Short_Integer");
1593 P_Int_Range (Standard_Short_Integer_Size);
1594 Write_Str (" for Short_Integer'Size use ");
1595 Write_Int (Standard_Short_Integer_Size);
1596 P (";");
1597 Write_Eol;
1598
1599 Write_Str (" type Long_Integer");
1600 P_Int_Range (Standard_Long_Integer_Size);
1601 Write_Str (" for Long_Integer'Size use ");
1602 Write_Int (Standard_Long_Integer_Size);
1603 P (";");
1604 Write_Eol;
1605
1606 Write_Str (" type Long_Long_Integer");
1607 P_Int_Range (Standard_Long_Long_Integer_Size);
1608 Write_Str (" for Long_Long_Integer'Size use ");
1609 Write_Int (Standard_Long_Long_Integer_Size);
1610 P (";");
1611 Write_Eol;
1612
1613 -- Floating point types
1614
1615 Write_Str (" type Short_Float is digits ");
1616 Write_Int (Standard_Short_Float_Digits);
1617 Write_Eol;
1618 P_Float_Range (Standard_Short_Float);
1619 Write_Str (" for Short_Float'Size use ");
1620 Write_Int (Standard_Short_Float_Size);
1621 P (";");
1622 Write_Eol;
1623
1624 Write_Str (" type Float is digits ");
1625 Write_Int (Standard_Float_Digits);
1626 Write_Eol;
1627 P_Float_Range (Standard_Float);
1628 Write_Str (" for Float'Size use ");
1629 Write_Int (Standard_Float_Size);
1630 P (";");
1631 Write_Eol;
1632
1633 Write_Str (" type Long_Float is digits ");
1634 Write_Int (Standard_Long_Float_Digits);
1635 Write_Eol;
1636 P_Float_Range (Standard_Long_Float);
1637 Write_Str (" for Long_Float'Size use ");
1638 Write_Int (Standard_Long_Float_Size);
1639 P (";");
1640 Write_Eol;
1641
1642 Write_Str (" type Long_Long_Float is digits ");
1643 Write_Int (Standard_Long_Long_Float_Digits);
1644 Write_Eol;
1645 P_Float_Range (Standard_Long_Long_Float);
1646 Write_Str (" for Long_Long_Float'Size use ");
1647 Write_Int (Standard_Long_Long_Float_Size);
1648 P (";");
1649 Write_Eol;
1650
1651 P (" type Character is (...)");
1652 Write_Str (" for Character'Size use ");
1653 Write_Int (Standard_Character_Size);
1654 P (";");
1655 P (" -- See RM A.1(35) for details of this type");
1656 Write_Eol;
1657
1658 P (" type Wide_Character is (...)");
1659 Write_Str (" for Wide_Character'Size use ");
1660 Write_Int (Standard_Wide_Character_Size);
1661 P (";");
1662 P (" -- See RM A.1(36) for details of this type");
1663 Write_Eol;
1664
1665 P (" type String is array (Positive range <>) of Character;");
1666 P (" pragma Pack (String);");
1667 Write_Eol;
1668
1669 P (" type Wide_String is array (Positive range <>)" &
1670 " of Wide_Character;");
1671 P (" pragma Pack (Wide_String);");
1672 Write_Eol;
1673
1674 -- Here it's OK to use the Duration type of the host compiler since
1675 -- the implementation of Duration in GNAT is target independent.
1676
1677 if Duration_32_Bits_On_Target then
1678 P (" type Duration is delta 0.020");
1679 P (" range -((2 ** 31 - 1) * 0.020) ..");
1680 P (" +((2 ** 31 - 1) * 0.020);");
1681 P (" for Duration'Small use 0.020;");
1682 else
1683 P (" type Duration is delta 0.000000001");
1684 P (" range -((2 ** 63 - 1) * 0.000000001) ..");
1685 P (" +((2 ** 63 - 1) * 0.000000001);");
1686 P (" for Duration'Small use 0.000000001;");
1687 end if;
1688
1689 Write_Eol;
1690
1691 P (" Constraint_Error : exception;");
1692 P (" Program_Error : exception;");
1693 P (" Storage_Error : exception;");
1694 P (" Tasking_Error : exception;");
1695 P (" Numeric_Error : exception renames Constraint_Error;");
1696 Write_Eol;
1697
1698 P ("end Standard;");
1699 end Print_Standard;
1700
1701 ----------------------
1702 -- Set_Float_Bounds --
1703 ----------------------
1704
1705 procedure Set_Float_Bounds (Id : Entity_Id) is
1706 L : Node_Id;
1707 -- Low bound of literal value
1708
1709 H : Node_Id;
1710 -- High bound of literal value
1711
1712 R : Node_Id;
1713 -- Range specification
1714
1715 Digs : constant Nat := UI_To_Int (Digits_Value (Id));
1716 -- Digits value, used to select bounds
1717
1718 begin
1719 -- Note: for the call from Cstand to initially create the types in
1720 -- Standard, Vax_Float will always be False. Circuitry in Sem_Vfpt
1721 -- will adjust these types appropriately in the Vax_Float case if
1722 -- a pragma Float_Representation (VAX_Float) is used.
1723
1724 if Vax_Float (Id) then
1725 if Digs = VAXFF_Digits then
1726 L := Real_Convert
1727 (VAXFF_First'Universal_Literal_String);
1728 H := Real_Convert
1729 (VAXFF_Last'Universal_Literal_String);
1730
1731 elsif Digs = VAXDF_Digits then
1732 L := Real_Convert
1733 (VAXDF_First'Universal_Literal_String);
1734 H := Real_Convert
1735 (VAXDF_Last'Universal_Literal_String);
1736
1737 else
1738 pragma Assert (Digs = VAXGF_Digits);
1739
1740 L := Real_Convert
1741 (VAXGF_First'Universal_Literal_String);
1742 H := Real_Convert
1743 (VAXGF_Last'Universal_Literal_String);
1744 end if;
1745
1746 elsif Is_AAMP_Float (Id) then
1747 if Digs = AAMPS_Digits then
1748 L := Real_Convert
1749 (AAMPS_First'Universal_Literal_String);
1750 H := Real_Convert
1751 (AAMPS_Last'Universal_Literal_String);
1752
1753 else
1754 pragma Assert (Digs = AAMPL_Digits);
1755 L := Real_Convert
1756 (AAMPL_First'Universal_Literal_String);
1757 H := Real_Convert
1758 (AAMPL_Last'Universal_Literal_String);
1759 end if;
1760
1761 elsif Digs = IEEES_Digits then
1762 L := Real_Convert
1763 (IEEES_First'Universal_Literal_String);
1764 H := Real_Convert
1765 (IEEES_Last'Universal_Literal_String);
1766
1767 elsif Digs = IEEEL_Digits then
1768 L := Real_Convert
1769 (IEEEL_First'Universal_Literal_String);
1770 H := Real_Convert
1771 (IEEEL_Last'Universal_Literal_String);
1772
1773 else
1774 pragma Assert (Digs = IEEEX_Digits);
1775
1776 L := Real_Convert
1777 (IEEEX_First'Universal_Literal_String);
1778 H := Real_Convert
1779 (IEEEX_Last'Universal_Literal_String);
1780 end if;
1781
1782 Set_Etype (L, Id);
1783 Set_Is_Static_Expression (L);
1784
1785 Set_Etype (H, Id);
1786 Set_Is_Static_Expression (H);
1787
1788 R := New_Node (N_Range, Stloc);
1789 Set_Low_Bound (R, L);
1790 Set_High_Bound (R, H);
1791 Set_Includes_Infinities (R, True);
1792 Set_Scalar_Range (Id, R);
1793 Set_Etype (R, Id);
1794 Set_Parent (R, Id);
1795 end Set_Float_Bounds;
1796
1797 ------------------------
1798 -- Set_Integer_Bounds --
1799 ------------------------
1800
1801 procedure Set_Integer_Bounds
1802 (Id : Entity_Id;
1803 Typ : Entity_Id;
1804 Lb : Uint;
1805 Hb : Uint)
1806 is
1807 L : Node_Id; -- Low bound of literal value
1808 H : Node_Id; -- High bound of literal value
1809 R : Node_Id; -- Range specification
1810
1811 begin
1812 L := Make_Integer (Lb);
1813 H := Make_Integer (Hb);
1814
1815 Set_Etype (L, Typ);
1816 Set_Etype (H, Typ);
1817
1818 R := New_Node (N_Range, Stloc);
1819 Set_Low_Bound (R, L);
1820 Set_High_Bound (R, H);
1821 Set_Scalar_Range (Id, R);
1822 Set_Etype (R, Typ);
1823 Set_Parent (R, Id);
1824 Set_Is_Unsigned_Type (Id, Lb >= 0);
1825 end Set_Integer_Bounds;
1826
1827 end CStand;
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