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2005-01-22 Thomas Koenig <Thomas.Koenig@online.de>
[official-gcc.git] / gcc / ada / cstand.adb
blob73afd401c2f43f33051004683cbde353dfc91f5a
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_Elem_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_Elem_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 -- The following tables define the binary and unary operators and their
193 -- corresponding result type.
194
195 Binary_Ops : constant array (S_Binary_Ops) of Name_Id :=
196
197 -- There is one entry here for each binary operator, except for the
198 -- case of concatenation, where there are two entries, one for a
199 -- String result, and one for a Wide_String result.
200
201 (Name_Op_Add,
202 Name_Op_And,
203 Name_Op_Concat,
204 Name_Op_Concat,
205 Name_Op_Divide,
206 Name_Op_Eq,
207 Name_Op_Expon,
208 Name_Op_Ge,
209 Name_Op_Gt,
210 Name_Op_Le,
211 Name_Op_Lt,
212 Name_Op_Mod,
213 Name_Op_Multiply,
214 Name_Op_Ne,
215 Name_Op_Or,
216 Name_Op_Rem,
217 Name_Op_Subtract,
218 Name_Op_Xor);
219
220 Bin_Op_Types : constant array (S_Binary_Ops) of Entity_Id :=
221
222 -- This table has the corresponding result types. The entries are
223 -- ordered so they correspond to the Binary_Ops array above.
224
225 (Universal_Integer, -- Add
226 Standard_Boolean, -- And
227 Standard_String, -- Concat (String)
228 Standard_Wide_String, -- Concat (Wide_String)
229 Universal_Integer, -- Divide
230 Standard_Boolean, -- Eq
231 Universal_Integer, -- Expon
232 Standard_Boolean, -- Ge
233 Standard_Boolean, -- Gt
234 Standard_Boolean, -- Le
235 Standard_Boolean, -- Lt
236 Universal_Integer, -- Mod
237 Universal_Integer, -- Multiply
238 Standard_Boolean, -- Ne
239 Standard_Boolean, -- Or
240 Universal_Integer, -- Rem
241 Universal_Integer, -- Subtract
242 Standard_Boolean); -- Xor
243
244 Unary_Ops : constant array (S_Unary_Ops) of Name_Id :=
245
246 -- There is one entry here for each unary operator
247
248 (Name_Op_Abs,
249 Name_Op_Subtract,
250 Name_Op_Not,
251 Name_Op_Add);
252
253 Unary_Op_Types : constant array (S_Unary_Ops) of Entity_Id :=
254
255 -- This table has the corresponding result types. The entries are
256 -- ordered so they correspond to the Unary_Ops array above.
257
258 (Universal_Integer, -- Abs
259 Universal_Integer, -- Subtract
260 Standard_Boolean, -- Not
261 Universal_Integer); -- Add
262
263 begin
264 for J in S_Binary_Ops loop
265 Op_Node := New_Operator (Binary_Ops (J), Bin_Op_Types (J));
266 SE (J) := Op_Node;
267 Append_Entity (Make_Formal (Any_Type, "LEFT"), Op_Node);
268 Append_Entity (Make_Formal (Any_Type, "RIGHT"), Op_Node);
269 end loop;
270
271 for J in S_Unary_Ops loop
272 Op_Node := New_Operator (Unary_Ops (J), Unary_Op_Types (J));
273 SE (J) := Op_Node;
274 Append_Entity (Make_Formal (Any_Type, "RIGHT"), Op_Node);
275 end loop;
276
277 -- For concatenation, we create a separate operator for each
278 -- array type. This simplifies the resolution of the component-
279 -- component concatenation operation. In Standard, we set the types
280 -- of the formals for string and wide string concatenation.
281
282 Set_Etype (First_Entity (Standard_Op_Concat), Standard_String);
283 Set_Etype (Last_Entity (Standard_Op_Concat), Standard_String);
284
285 Set_Etype (First_Entity (Standard_Op_Concatw), Standard_Wide_String);
286 Set_Etype (Last_Entity (Standard_Op_Concatw), Standard_Wide_String);
287 end Create_Operators;
288
289 ---------------------
290 -- Create_Standard --
291 ---------------------
292
293 -- The tree for the package Standard is prefixed to all compilations.
294 -- Several entities required by semantic analysis are denoted by global
295 -- variables that are initialized to point to the corresponding
296 -- occurrences in STANDARD. The visible entities of STANDARD are
297 -- created here. The private entities defined in STANDARD are created
298 -- by Initialize_Standard in the semantics module.
299
300 procedure Create_Standard is
301 Decl_S : constant List_Id := New_List;
302 -- List of declarations in Standard
303
304 Decl_A : constant List_Id := New_List;
305 -- List of declarations in ASCII
306
307 Decl : Node_Id;
308 Pspec : Node_Id;
309 Tdef_Node : Node_Id;
310 Ident_Node : Node_Id;
311 Ccode : Char_Code;
312 E_Id : Entity_Id;
313 R_Node : Node_Id;
314 B_Node : Node_Id;
315
316 procedure Build_Exception (S : Standard_Entity_Type);
317 -- Procedure to declare given entity as an exception
318
319 ---------------------
320 -- Build_Exception --
321 ---------------------
322
323 procedure Build_Exception (S : Standard_Entity_Type) is
324 begin
325 Set_Ekind (Standard_Entity (S), E_Exception);
326 Set_Etype (Standard_Entity (S), Standard_Exception_Type);
327 Set_Exception_Code (Standard_Entity (S), Uint_0);
328 Set_Is_Public (Standard_Entity (S), True);
329
330 Decl :=
331 Make_Exception_Declaration (Stloc,
332 Defining_Identifier => Standard_Entity (S));
333 Append (Decl, Decl_S);
334 end Build_Exception;
335
336 -- Start of processing for Create_Standard
337
338 begin
339 -- Initialize scanner for internal scans of literals
340
341 Scn.Initialize_Scanner (No_Unit, Internal_Source_File);
342
343 -- First step is to create defining identifiers for each entity
344
345 for S in Standard_Entity_Type loop
346 declare
347 S_Name : constant String := Standard_Entity_Type'Image (S);
348 -- Name of entity (note we skip S_ at the start)
349
350 Ident_Node : Node_Id;
351 -- Defining identifier node
352
353 begin
354 Ident_Node := New_Standard_Entity;
355 Make_Name (Ident_Node, S_Name (3 .. S_Name'Length));
356 Standard_Entity (S) := Ident_Node;
357 end;
358 end loop;
359
360 -- Create package declaration node for package Standard
361
362 Standard_Package_Node := New_Node (N_Package_Declaration, Stloc);
363
364 Pspec := New_Node (N_Package_Specification, Stloc);
365 Set_Specification (Standard_Package_Node, Pspec);
366
367 Set_Defining_Unit_Name (Pspec, Standard_Standard);
368 Set_Visible_Declarations (Pspec, Decl_S);
369
370 Set_Ekind (Standard_Standard, E_Package);
371 Set_Is_Pure (Standard_Standard);
372 Set_Is_Compilation_Unit (Standard_Standard);
373
374 -- Create type declaration nodes for standard types
375
376 for S in S_Types loop
377 Decl := New_Node (N_Full_Type_Declaration, Stloc);
378 Set_Defining_Identifier (Decl, Standard_Entity (S));
379 Set_Is_Frozen (Standard_Entity (S));
380 Set_Is_Public (Standard_Entity (S));
381 Append (Decl, Decl_S);
382 end loop;
383
384 -- Create type definition node for type Boolean. The Size is set to
385 -- 1 as required by Ada 95 and current ARG interpretations for Ada/83.
386
387 -- Note: Object_Size of Boolean is 8. This means that we do NOT in
388 -- general know that Boolean variables have valid values, so we do
389 -- not set the Is_Known_Valid flag.
390
391 Tdef_Node := New_Node (N_Enumeration_Type_Definition, Stloc);
392 Set_Literals (Tdef_Node, New_List);
393 Append (Standard_False, Literals (Tdef_Node));
394 Append (Standard_True, Literals (Tdef_Node));
395 Set_Type_Definition (Parent (Standard_Boolean), Tdef_Node);
396
397 Set_Ekind (Standard_Boolean, E_Enumeration_Type);
398 Set_First_Literal (Standard_Boolean, Standard_False);
399 Set_Etype (Standard_Boolean, Standard_Boolean);
400 Init_Esize (Standard_Boolean, Standard_Character_Size);
401 Init_RM_Size (Standard_Boolean, 1);
402 Set_Elem_Alignment (Standard_Boolean);
403
404 Set_Is_Unsigned_Type (Standard_Boolean);
405 Set_Size_Known_At_Compile_Time (Standard_Boolean);
406
407 Set_Ekind (Standard_True, E_Enumeration_Literal);
408 Set_Etype (Standard_True, Standard_Boolean);
409 Set_Enumeration_Pos (Standard_True, Uint_1);
410 Set_Enumeration_Rep (Standard_True, Uint_1);
411 Set_Is_Known_Valid (Standard_True, True);
412
413 Set_Ekind (Standard_False, E_Enumeration_Literal);
414 Set_Etype (Standard_False, Standard_Boolean);
415 Set_Enumeration_Pos (Standard_False, Uint_0);
416 Set_Enumeration_Rep (Standard_False, Uint_0);
417 Set_Is_Known_Valid (Standard_False, True);
418
419 -- For the bounds of Boolean, we create a range node corresponding to
420
421 -- range False .. True
422
423 -- where the occurrences of the literals must point to the
424 -- corresponding definition.
425
426 R_Node := New_Node (N_Range, Stloc);
427 B_Node := New_Node (N_Identifier, Stloc);
428 Set_Chars (B_Node, Chars (Standard_False));
429 Set_Entity (B_Node, Standard_False);
430 Set_Etype (B_Node, Standard_Boolean);
431 Set_Is_Static_Expression (B_Node);
432 Set_Low_Bound (R_Node, B_Node);
433
434 B_Node := New_Node (N_Identifier, Stloc);
435 Set_Chars (B_Node, Chars (Standard_True));
436 Set_Entity (B_Node, Standard_True);
437 Set_Etype (B_Node, Standard_Boolean);
438 Set_Is_Static_Expression (B_Node);
439 Set_High_Bound (R_Node, B_Node);
440
441 Set_Scalar_Range (Standard_Boolean, R_Node);
442 Set_Etype (R_Node, Standard_Boolean);
443 Set_Parent (R_Node, Standard_Boolean);
444
445 -- Record entity identifiers for boolean literals in the
446 -- Boolean_Literals array, for easy reference during expansion.
447
448 Boolean_Literals := (False => Standard_False, True => Standard_True);
449
450 -- Create type definition nodes for predefined integer types
451
452 Build_Signed_Integer_Type
453 (Standard_Short_Short_Integer, Standard_Short_Short_Integer_Size);
454
455 Build_Signed_Integer_Type
456 (Standard_Short_Integer, Standard_Short_Integer_Size);
457
458 Build_Signed_Integer_Type
459 (Standard_Integer, Standard_Integer_Size);
460
461 declare
462 LIS : Nat;
463 begin
464 if Debug_Flag_M then
465 LIS := 64;
466 else
467 LIS := Standard_Long_Integer_Size;
468 end if;
469
470 Build_Signed_Integer_Type (Standard_Long_Integer, LIS);
471 end;
472
473 Build_Signed_Integer_Type
474 (Standard_Long_Long_Integer, Standard_Long_Long_Integer_Size);
475
476 Create_Unconstrained_Base_Type
477 (Standard_Short_Short_Integer, E_Signed_Integer_Subtype);
478
479 Create_Unconstrained_Base_Type
480 (Standard_Short_Integer, E_Signed_Integer_Subtype);
481
482 Create_Unconstrained_Base_Type
483 (Standard_Integer, E_Signed_Integer_Subtype);
484
485 Create_Unconstrained_Base_Type
486 (Standard_Long_Integer, E_Signed_Integer_Subtype);
487
488 Create_Unconstrained_Base_Type
489 (Standard_Long_Long_Integer, E_Signed_Integer_Subtype);
490
491 -- Create type definition nodes for predefined float types
492
493 Build_Float_Type
494 (Standard_Short_Float,
495 Standard_Short_Float_Size,
496 Standard_Short_Float_Digits);
497
498 Build_Float_Type
499 (Standard_Float,
500 Standard_Float_Size,
501 Standard_Float_Digits);
502
503 Build_Float_Type
504 (Standard_Long_Float,
505 Standard_Long_Float_Size,
506 Standard_Long_Float_Digits);
507
508 Build_Float_Type
509 (Standard_Long_Long_Float,
510 Standard_Long_Long_Float_Size,
511 Standard_Long_Long_Float_Digits);
512
513 -- Create type definition node for type Character. Note that we do not
514 -- set the Literals field, since type Character is handled with special
515 -- routine that do not need a literal list.
516
517 Tdef_Node := New_Node (N_Enumeration_Type_Definition, Stloc);
518 Set_Type_Definition (Parent (Standard_Character), Tdef_Node);
519
520 Set_Ekind (Standard_Character, E_Enumeration_Type);
521 Set_Etype (Standard_Character, Standard_Character);
522 Init_Esize (Standard_Character, Standard_Character_Size);
523 Init_RM_Size (Standard_Character, 8);
524 Set_Elem_Alignment (Standard_Character);
525
526 Set_Is_Unsigned_Type (Standard_Character);
527 Set_Is_Character_Type (Standard_Character);
528 Set_Is_Known_Valid (Standard_Character);
529 Set_Size_Known_At_Compile_Time (Standard_Character);
530
531 -- Create the bounds for type Character.
532
533 R_Node := New_Node (N_Range, Stloc);
534
535 -- Low bound for type Character (Standard.Nul)
536
537 B_Node := New_Node (N_Character_Literal, Stloc);
538 Set_Is_Static_Expression (B_Node);
539 Set_Chars (B_Node, No_Name);
540 Set_Char_Literal_Value (B_Node, 16#00#);
541 Set_Entity (B_Node, Empty);
542 Set_Etype (B_Node, Standard_Character);
543 Set_Low_Bound (R_Node, B_Node);
544
545 -- High bound for type Character
546
547 B_Node := New_Node (N_Character_Literal, Stloc);
548 Set_Is_Static_Expression (B_Node);
549 Set_Chars (B_Node, No_Name);
550 Set_Char_Literal_Value (B_Node, 16#FF#);
551 Set_Entity (B_Node, Empty);
552 Set_Etype (B_Node, Standard_Character);
553 Set_High_Bound (R_Node, B_Node);
554
555 Set_Scalar_Range (Standard_Character, R_Node);
556 Set_Etype (R_Node, Standard_Character);
557 Set_Parent (R_Node, Standard_Character);
558
559 -- Create type definition for type Wide_Character. Note that we do not
560 -- set the Literals field, since type Wide_Character is handled with
561 -- special routines that do not need a literal list.
562
563 Tdef_Node := New_Node (N_Enumeration_Type_Definition, Stloc);
564 Set_Type_Definition (Parent (Standard_Wide_Character), Tdef_Node);
565
566 Set_Ekind (Standard_Wide_Character, E_Enumeration_Type);
567 Set_Etype (Standard_Wide_Character, Standard_Wide_Character);
568 Init_Size (Standard_Wide_Character, Standard_Wide_Character_Size);
569
570 Set_Elem_Alignment (Standard_Wide_Character);
571 Set_Is_Unsigned_Type (Standard_Wide_Character);
572 Set_Is_Character_Type (Standard_Wide_Character);
573 Set_Is_Known_Valid (Standard_Wide_Character);
574 Set_Size_Known_At_Compile_Time (Standard_Wide_Character);
575
576 -- Create the bounds for type Wide_Character.
577
578 R_Node := New_Node (N_Range, Stloc);
579
580 -- Low bound for type Wide_Character
581
582 B_Node := New_Node (N_Character_Literal, Stloc);
583 Set_Is_Static_Expression (B_Node);
584 Set_Chars (B_Node, No_Name); -- ???
585 Set_Char_Literal_Value (B_Node, 16#0000#);
586 Set_Entity (B_Node, Empty);
587 Set_Etype (B_Node, Standard_Wide_Character);
588 Set_Low_Bound (R_Node, B_Node);
589
590 -- High bound for type Wide_Character
591
592 B_Node := New_Node (N_Character_Literal, Stloc);
593 Set_Is_Static_Expression (B_Node);
594 Set_Chars (B_Node, No_Name); -- ???
595 Set_Char_Literal_Value (B_Node, 16#FFFF#);
596 Set_Entity (B_Node, Empty);
597 Set_Etype (B_Node, Standard_Wide_Character);
598 Set_High_Bound (R_Node, B_Node);
599
600 Set_Scalar_Range (Standard_Wide_Character, R_Node);
601 Set_Etype (R_Node, Standard_Wide_Character);
602 Set_Parent (R_Node, Standard_Wide_Character);
603
604 -- Create type definition node for type String
605
606 Tdef_Node := New_Node (N_Unconstrained_Array_Definition, Stloc);
607
608 declare
609 CompDef_Node : Node_Id;
610 begin
611 CompDef_Node := New_Node (N_Component_Definition, Stloc);
612 Set_Aliased_Present (CompDef_Node, False);
613 Set_Access_Definition (CompDef_Node, Empty);
614 Set_Subtype_Indication (CompDef_Node, Identifier_For (S_Character));
615 Set_Component_Definition (Tdef_Node, CompDef_Node);
616 end;
617
618 Set_Subtype_Marks (Tdef_Node, New_List);
619 Append (Identifier_For (S_Positive), Subtype_Marks (Tdef_Node));
620 Set_Type_Definition (Parent (Standard_String), Tdef_Node);
621
622 Set_Ekind (Standard_String, E_String_Type);
623 Set_Etype (Standard_String, Standard_String);
624 Set_Component_Type (Standard_String, Standard_Character);
625 Set_Component_Size (Standard_String, Uint_8);
626 Init_Size_Align (Standard_String);
627 Set_Alignment (Standard_String, Uint_1);
628
629 -- Set index type of String
630
631 E_Id := First
632 (Subtype_Marks (Type_Definition (Parent (Standard_String))));
633 Set_First_Index (Standard_String, E_Id);
634 Set_Entity (E_Id, Standard_Positive);
635 Set_Etype (E_Id, Standard_Positive);
636
637 -- Create type definition node for type Wide_String
638
639 Tdef_Node := New_Node (N_Unconstrained_Array_Definition, Stloc);
640 declare
641 CompDef_Node : Node_Id;
642 begin
643 CompDef_Node := New_Node (N_Component_Definition, Stloc);
644 Set_Aliased_Present (CompDef_Node, False);
645 Set_Access_Definition (CompDef_Node, Empty);
646 Set_Subtype_Indication (CompDef_Node,
647 Identifier_For (S_Wide_Character));
648 Set_Component_Definition (Tdef_Node, CompDef_Node);
649 end;
650 Set_Subtype_Marks (Tdef_Node, New_List);
651 Append (Identifier_For (S_Positive), Subtype_Marks (Tdef_Node));
652 Set_Type_Definition (Parent (Standard_Wide_String), Tdef_Node);
653
654 Set_Ekind (Standard_Wide_String, E_String_Type);
655 Set_Etype (Standard_Wide_String, Standard_Wide_String);
656 Set_Component_Type (Standard_Wide_String, Standard_Wide_Character);
657 Set_Component_Size (Standard_Wide_String, Uint_16);
658 Init_Size_Align (Standard_Wide_String);
659
660 -- Set index type of Wide_String
661
662 E_Id := First
663 (Subtype_Marks (Type_Definition (Parent (Standard_Wide_String))));
664 Set_First_Index (Standard_Wide_String, E_Id);
665 Set_Entity (E_Id, Standard_Positive);
666 Set_Etype (E_Id, Standard_Positive);
667
668 -- Create subtype declaration for Natural
669
670 Decl := New_Node (N_Subtype_Declaration, Stloc);
671 Set_Defining_Identifier (Decl, Standard_Natural);
672 Set_Subtype_Indication (Decl,
673 New_Occurrence_Of (Standard_Integer, Stloc));
674 Append (Decl, Decl_S);
675
676 Set_Ekind (Standard_Natural, E_Signed_Integer_Subtype);
677 Set_Etype (Standard_Natural, Base_Type (Standard_Integer));
678 Init_Esize (Standard_Natural, Standard_Integer_Size);
679 Init_RM_Size (Standard_Natural, Standard_Integer_Size - 1);
680 Set_Elem_Alignment (Standard_Natural);
681 Set_Size_Known_At_Compile_Time
682 (Standard_Natural);
683 Set_Integer_Bounds (Standard_Natural,
684 Typ => Base_Type (Standard_Integer),
685 Lb => Uint_0,
686 Hb => Intval (High_Bound (Scalar_Range (Standard_Integer))));
687 Set_Is_Constrained (Standard_Natural);
688 Set_Is_Frozen (Standard_Natural);
689 Set_Is_Public (Standard_Natural);
690
691 -- Create subtype declaration for Positive
692
693 Decl := New_Node (N_Subtype_Declaration, Stloc);
694 Set_Defining_Identifier (Decl, Standard_Positive);
695 Set_Subtype_Indication (Decl,
696 New_Occurrence_Of (Standard_Integer, Stloc));
697 Append (Decl, Decl_S);
698
699 Set_Ekind (Standard_Positive, E_Signed_Integer_Subtype);
700 Set_Etype (Standard_Positive, Base_Type (Standard_Integer));
701 Init_Esize (Standard_Positive, Standard_Integer_Size);
702 Init_RM_Size (Standard_Positive, Standard_Integer_Size - 1);
703 Set_Elem_Alignment (Standard_Positive);
704
705 Set_Size_Known_At_Compile_Time (Standard_Positive);
706
707 Set_Integer_Bounds (Standard_Positive,
708 Typ => Base_Type (Standard_Integer),
709 Lb => Uint_1,
710 Hb => Intval (High_Bound (Scalar_Range (Standard_Integer))));
711 Set_Is_Constrained (Standard_Positive);
712 Set_Is_Frozen (Standard_Positive);
713 Set_Is_Public (Standard_Positive);
714
715 -- Create declaration for package ASCII
716
717 Decl := New_Node (N_Package_Declaration, Stloc);
718 Append (Decl, Decl_S);
719
720 Pspec := New_Node (N_Package_Specification, Stloc);
721 Set_Specification (Decl, Pspec);
722
723 Set_Defining_Unit_Name (Pspec, Standard_Entity (S_ASCII));
724 Set_Ekind (Standard_Entity (S_ASCII), E_Package);
725 Set_Visible_Declarations (Pspec, Decl_A);
726
727 -- Create control character definitions in package ASCII. Note that
728 -- the character literal entries created here correspond to literal
729 -- values that are impossible in the source, but can be represented
730 -- internally with no difficulties.
731
732 Ccode := 16#00#;
733
734 for S in S_ASCII_Names loop
735 Decl := New_Node (N_Object_Declaration, Staloc);
736 Set_Constant_Present (Decl, True);
737
738 declare
739 A_Char : constant Entity_Id := Standard_Entity (S);
740 Expr_Decl : Node_Id;
741
742 begin
743 Set_Sloc (A_Char, Staloc);
744 Set_Ekind (A_Char, E_Constant);
745 Set_Never_Set_In_Source (A_Char, True);
746 Set_Is_True_Constant (A_Char, True);
747 Set_Etype (A_Char, Standard_Character);
748 Set_Scope (A_Char, Standard_Entity (S_ASCII));
749 Set_Is_Immediately_Visible (A_Char, False);
750 Set_Is_Public (A_Char, True);
751 Set_Is_Known_Valid (A_Char, True);
752
753 Append_Entity (A_Char, Standard_Entity (S_ASCII));
754 Set_Defining_Identifier (Decl, A_Char);
755
756 Set_Object_Definition (Decl, Identifier_For (S_Character));
757 Expr_Decl := New_Node (N_Character_Literal, Staloc);
758 Set_Expression (Decl, Expr_Decl);
759
760 Set_Is_Static_Expression (Expr_Decl);
761 Set_Chars (Expr_Decl, No_Name);
762 Set_Etype (Expr_Decl, Standard_Character);
763 Set_Char_Literal_Value (Expr_Decl, Ccode);
764 end;
765
766 Append (Decl, Decl_A);
767
768 -- Increment character code, dealing with non-contiguities
769
770 Ccode := Ccode + 1;
771
772 if Ccode = 16#20# then
773 Ccode := 16#21#;
774 elsif Ccode = 16#27# then
775 Ccode := 16#3A#;
776 elsif Ccode = 16#3C# then
777 Ccode := 16#3F#;
778 elsif Ccode = 16#41# then
779 Ccode := 16#5B#;
780 end if;
781 end loop;
782
783 -- Create semantic phase entities
784
785 Standard_Void_Type := New_Standard_Entity;
786 Set_Ekind (Standard_Void_Type, E_Void);
787 Set_Etype (Standard_Void_Type, Standard_Void_Type);
788 Set_Scope (Standard_Void_Type, Standard_Standard);
789 Make_Name (Standard_Void_Type, "_void_type");
790
791 -- The type field of packages is set to void
792
793 Set_Etype (Standard_Standard, Standard_Void_Type);
794 Set_Etype (Standard_ASCII, Standard_Void_Type);
795
796 -- Standard_A_String is actually used in generated code, so it has a
797 -- type name that is reasonable, but does not overlap any Ada name.
798
799 Standard_A_String := New_Standard_Entity;
800 Set_Ekind (Standard_A_String, E_Access_Type);
801 Set_Scope (Standard_A_String, Standard_Standard);
802 Set_Etype (Standard_A_String, Standard_A_String);
803
804 if Debug_Flag_6 then
805 Init_Size (Standard_A_String, System_Address_Size);
806 else
807 Init_Size (Standard_A_String, System_Address_Size * 2);
808 end if;
809
810 Init_Alignment (Standard_A_String);
811
812 Set_Directly_Designated_Type
813 (Standard_A_String, Standard_String);
814 Make_Name (Standard_A_String, "access_string");
815
816 Standard_A_Char := New_Standard_Entity;
817 Set_Ekind (Standard_A_Char, E_Access_Type);
818 Set_Scope (Standard_A_Char, Standard_Standard);
819 Set_Etype (Standard_A_Char, Standard_A_String);
820 Init_Size (Standard_A_Char, System_Address_Size);
821 Set_Elem_Alignment (Standard_A_Char);
822
823 Set_Directly_Designated_Type (Standard_A_Char, Standard_Character);
824 Make_Name (Standard_A_Char, "access_character");
825
826 -- Note on type names. The type names for the following special types
827 -- are constructed so that they will look reasonable should they ever
828 -- appear in error messages etc, although in practice the use of the
829 -- special insertion character } for types results in special handling
830 -- of these type names in any case. The blanks in these names would
831 -- trouble in Gigi, but that's OK here, since none of these types
832 -- should ever get through to Gigi! Attributes of these types are
833 -- filled out to minimize problems with cascaded errors (for example,
834 -- Any_Integer is given reasonable and consistent type and size values)
835
836 Any_Type := New_Standard_Entity;
837 Decl := New_Node (N_Full_Type_Declaration, Stloc);
838 Set_Defining_Identifier (Decl, Any_Type);
839 Set_Scope (Any_Type, Standard_Standard);
840 Build_Signed_Integer_Type (Any_Type, Standard_Integer_Size);
841 Make_Name (Any_Type, "any type");
842
843 Any_Id := New_Standard_Entity;
844 Set_Ekind (Any_Id, E_Variable);
845 Set_Scope (Any_Id, Standard_Standard);
846 Set_Etype (Any_Id, Any_Type);
847 Init_Size_Align (Any_Id);
848 Make_Name (Any_Id, "any id");
849
850 Any_Access := New_Standard_Entity;
851 Set_Ekind (Any_Access, E_Access_Type);
852 Set_Scope (Any_Access, Standard_Standard);
853 Set_Etype (Any_Access, Any_Access);
854 Init_Size (Any_Access, System_Address_Size);
855 Set_Elem_Alignment (Any_Access);
856 Make_Name (Any_Access, "an access type");
857
858 Any_Character := New_Standard_Entity;
859 Set_Ekind (Any_Character, E_Enumeration_Type);
860 Set_Scope (Any_Character, Standard_Standard);
861 Set_Etype (Any_Character, Any_Character);
862 Set_Is_Unsigned_Type (Any_Character);
863 Set_Is_Character_Type (Any_Character);
864 Init_Esize (Any_Character, Standard_Character_Size);
865 Init_RM_Size (Any_Character, 8);
866 Set_Elem_Alignment (Any_Character);
867 Set_Scalar_Range (Any_Character, Scalar_Range (Standard_Character));
868 Make_Name (Any_Character, "a character type");
869
870 Any_Array := New_Standard_Entity;
871 Set_Ekind (Any_Array, E_String_Type);
872 Set_Scope (Any_Array, Standard_Standard);
873 Set_Etype (Any_Array, Any_Array);
874 Set_Component_Type (Any_Array, Any_Character);
875 Init_Size_Align (Any_Array);
876 Make_Name (Any_Array, "an array type");
877
878 Any_Boolean := New_Standard_Entity;
879 Set_Ekind (Any_Boolean, E_Enumeration_Type);
880 Set_Scope (Any_Boolean, Standard_Standard);
881 Set_Etype (Any_Boolean, Standard_Boolean);
882 Init_Esize (Any_Boolean, Standard_Character_Size);
883 Init_RM_Size (Any_Boolean, 1);
884 Set_Elem_Alignment (Any_Boolean);
885 Set_Is_Unsigned_Type (Any_Boolean);
886 Set_Scalar_Range (Any_Boolean, Scalar_Range (Standard_Boolean));
887 Make_Name (Any_Boolean, "a boolean type");
888
889 Any_Composite := New_Standard_Entity;
890 Set_Ekind (Any_Composite, E_Array_Type);
891 Set_Scope (Any_Composite, Standard_Standard);
892 Set_Etype (Any_Composite, Any_Composite);
893 Set_Component_Size (Any_Composite, Uint_0);
894 Set_Component_Type (Any_Composite, Standard_Integer);
895 Init_Size_Align (Any_Composite);
896 Make_Name (Any_Composite, "a composite type");
897
898 Any_Discrete := New_Standard_Entity;
899 Set_Ekind (Any_Discrete, E_Signed_Integer_Type);
900 Set_Scope (Any_Discrete, Standard_Standard);
901 Set_Etype (Any_Discrete, Any_Discrete);
902 Init_Size (Any_Discrete, Standard_Integer_Size);
903 Set_Elem_Alignment (Any_Discrete);
904 Make_Name (Any_Discrete, "a discrete type");
905
906 Any_Fixed := New_Standard_Entity;
907 Set_Ekind (Any_Fixed, E_Ordinary_Fixed_Point_Type);
908 Set_Scope (Any_Fixed, Standard_Standard);
909 Set_Etype (Any_Fixed, Any_Fixed);
910 Init_Size (Any_Fixed, Standard_Integer_Size);
911 Set_Elem_Alignment (Any_Fixed);
912 Make_Name (Any_Fixed, "a fixed-point type");
913
914 Any_Integer := New_Standard_Entity;
915 Set_Ekind (Any_Integer, E_Signed_Integer_Type);
916 Set_Scope (Any_Integer, Standard_Standard);
917 Set_Etype (Any_Integer, Standard_Long_Long_Integer);
918 Init_Size (Any_Integer, Standard_Long_Long_Integer_Size);
919 Set_Elem_Alignment (Any_Integer);
920
921 Set_Integer_Bounds
922 (Any_Integer,
923 Typ => Base_Type (Standard_Integer),
924 Lb => Uint_0,
925 Hb => Intval (High_Bound (Scalar_Range (Standard_Integer))));
926 Make_Name (Any_Integer, "an integer type");
927
928 Any_Modular := New_Standard_Entity;
929 Set_Ekind (Any_Modular, E_Modular_Integer_Type);
930 Set_Scope (Any_Modular, Standard_Standard);
931 Set_Etype (Any_Modular, Standard_Long_Long_Integer);
932 Init_Size (Any_Modular, Standard_Long_Long_Integer_Size);
933 Set_Elem_Alignment (Any_Modular);
934 Set_Is_Unsigned_Type (Any_Modular);
935 Make_Name (Any_Modular, "a modular type");
936
937 Any_Numeric := New_Standard_Entity;
938 Set_Ekind (Any_Numeric, E_Signed_Integer_Type);
939 Set_Scope (Any_Numeric, Standard_Standard);
940 Set_Etype (Any_Numeric, Standard_Long_Long_Integer);
941 Init_Size (Any_Numeric, Standard_Long_Long_Integer_Size);
942 Set_Elem_Alignment (Any_Numeric);
943 Make_Name (Any_Numeric, "a numeric type");
944
945 Any_Real := New_Standard_Entity;
946 Set_Ekind (Any_Real, E_Floating_Point_Type);
947 Set_Scope (Any_Real, Standard_Standard);
948 Set_Etype (Any_Real, Standard_Long_Long_Float);
949 Init_Size (Any_Real, Standard_Long_Long_Float_Size);
950 Set_Elem_Alignment (Any_Real);
951 Make_Name (Any_Real, "a real type");
952
953 Any_Scalar := New_Standard_Entity;
954 Set_Ekind (Any_Scalar, E_Signed_Integer_Type);
955 Set_Scope (Any_Scalar, Standard_Standard);
956 Set_Etype (Any_Scalar, Any_Scalar);
957 Init_Size (Any_Scalar, Standard_Integer_Size);
958 Set_Elem_Alignment (Any_Scalar);
959 Make_Name (Any_Scalar, "a scalar type");
960
961 Any_String := New_Standard_Entity;
962 Set_Ekind (Any_String, E_String_Type);
963 Set_Scope (Any_String, Standard_Standard);
964 Set_Etype (Any_String, Any_String);
965 Set_Component_Type (Any_String, Any_Character);
966 Init_Size_Align (Any_String);
967 Make_Name (Any_String, "a string type");
968
969 declare
970 Index : Node_Id;
971
972 begin
973 Index :=
974 Make_Range (Stloc,
975 Low_Bound => Make_Integer (Uint_0),
976 High_Bound => Make_Integer (Uint_2 ** Standard_Integer_Size));
977 Set_Etype (Index, Standard_Integer);
978 Set_First_Index (Any_String, Index);
979 end;
980
981 Standard_Integer_8 := New_Standard_Entity;
982 Decl := New_Node (N_Full_Type_Declaration, Stloc);
983 Set_Defining_Identifier (Decl, Standard_Integer_8);
984 Make_Name (Standard_Integer_8, "integer_8");
985 Set_Scope (Standard_Integer_8, Standard_Standard);
986 Build_Signed_Integer_Type (Standard_Integer_8, 8);
987
988 Standard_Integer_16 := New_Standard_Entity;
989 Decl := New_Node (N_Full_Type_Declaration, Stloc);
990 Set_Defining_Identifier (Decl, Standard_Integer_16);
991 Make_Name (Standard_Integer_16, "integer_16");
992 Set_Scope (Standard_Integer_16, Standard_Standard);
993 Build_Signed_Integer_Type (Standard_Integer_16, 16);
994
995 Standard_Integer_32 := New_Standard_Entity;
996 Decl := New_Node (N_Full_Type_Declaration, Stloc);
997 Set_Defining_Identifier (Decl, Standard_Integer_32);
998 Make_Name (Standard_Integer_32, "integer_32");
999 Set_Scope (Standard_Integer_32, Standard_Standard);
1000 Build_Signed_Integer_Type (Standard_Integer_32, 32);
1001
1002 Standard_Integer_64 := New_Standard_Entity;
1003 Decl := New_Node (N_Full_Type_Declaration, Stloc);
1004 Set_Defining_Identifier (Decl, Standard_Integer_64);
1005 Make_Name (Standard_Integer_64, "integer_64");
1006 Set_Scope (Standard_Integer_64, Standard_Standard);
1007 Build_Signed_Integer_Type (Standard_Integer_64, 64);
1008
1009 Standard_Unsigned := New_Standard_Entity;
1010 Decl := New_Node (N_Full_Type_Declaration, Stloc);
1011 Set_Defining_Identifier (Decl, Standard_Unsigned);
1012 Make_Name (Standard_Unsigned, "unsigned");
1013
1014 Set_Ekind (Standard_Unsigned, E_Modular_Integer_Type);
1015 Set_Scope (Standard_Unsigned, Standard_Standard);
1016 Set_Etype (Standard_Unsigned, Standard_Unsigned);
1017 Init_Size (Standard_Unsigned, Standard_Integer_Size);
1018 Set_Elem_Alignment (Standard_Unsigned);
1019 Set_Modulus (Standard_Unsigned,
1020 Uint_2 ** Standard_Integer_Size);
1021 Set_Is_Unsigned_Type (Standard_Unsigned);
1022 Set_Size_Known_At_Compile_Time
1023 (Standard_Unsigned);
1024
1025 R_Node := New_Node (N_Range, Stloc);
1026 Set_Low_Bound (R_Node, Make_Integer (Uint_0));
1027 Set_High_Bound (R_Node, Make_Integer (Modulus (Standard_Unsigned) - 1));
1028 Set_Etype (Low_Bound (R_Node), Standard_Unsigned);
1029 Set_Etype (High_Bound (R_Node), Standard_Unsigned);
1030 Set_Scalar_Range (Standard_Unsigned, R_Node);
1031
1032 -- Note: universal integer and universal real are constructed as fully
1033 -- formed signed numeric types, with parameters corresponding to the
1034 -- longest runtime types (Long_Long_Integer and Long_Long_Float). This
1035 -- allows Gigi to properly process references to universal types that
1036 -- are not folded at compile time.
1037
1038 Universal_Integer := New_Standard_Entity;
1039 Decl := New_Node (N_Full_Type_Declaration, Stloc);
1040 Set_Defining_Identifier (Decl, Universal_Integer);
1041 Make_Name (Universal_Integer, "universal_integer");
1042 Set_Scope (Universal_Integer, Standard_Standard);
1043 Build_Signed_Integer_Type
1044 (Universal_Integer, Standard_Long_Long_Integer_Size);
1045
1046 Universal_Real := New_Standard_Entity;
1047 Decl := New_Node (N_Full_Type_Declaration, Stloc);
1048 Set_Defining_Identifier (Decl, Universal_Real);
1049 Make_Name (Universal_Real, "universal_real");
1050 Set_Scope (Universal_Real, Standard_Standard);
1051 Build_Float_Type
1052 (Universal_Real,
1053 Standard_Long_Long_Float_Size,
1054 Standard_Long_Long_Float_Digits);
1055
1056 -- Note: universal fixed, unlike universal integer and universal real,
1057 -- is never used at runtime, so it does not need to have bounds set.
1058
1059 Universal_Fixed := New_Standard_Entity;
1060 Decl := New_Node (N_Full_Type_Declaration, Stloc);
1061 Set_Defining_Identifier (Decl, Universal_Fixed);
1062 Make_Name (Universal_Fixed, "universal_fixed");
1063 Set_Ekind (Universal_Fixed, E_Ordinary_Fixed_Point_Type);
1064 Set_Etype (Universal_Fixed, Universal_Fixed);
1065 Set_Scope (Universal_Fixed, Standard_Standard);
1066 Init_Size (Universal_Fixed, Standard_Long_Long_Integer_Size);
1067 Set_Elem_Alignment (Universal_Fixed);
1068 Set_Size_Known_At_Compile_Time
1069 (Universal_Fixed);
1070
1071 -- Create type declaration for Duration, using a 64-bit size. The
1072 -- delta and size values depend on the mode set in system.ads.
1073
1074 Build_Duration : declare
1075 Dlo : Uint;
1076 Dhi : Uint;
1077 Delta_Val : Ureal;
1078
1079 begin
1080 -- In 32 bit mode, the size is 32 bits, and the delta and
1081 -- small values are set to 20 milliseconds (20.0**(10.0**(-3)).
1082
1083 if Duration_32_Bits_On_Target then
1084 Dlo := Intval (Type_Low_Bound (Standard_Integer_32));
1085 Dhi := Intval (Type_High_Bound (Standard_Integer_32));
1086 Delta_Val := UR_From_Components (UI_From_Int (20), Uint_3, 10);
1087
1088 -- In standard 64-bit mode, the size is 64-bits and the delta and
1089 -- small values are set to nanoseconds (1.0**(10.0**(-9))
1090
1091 else
1092 Dlo := Intval (Type_Low_Bound (Standard_Integer_64));
1093 Dhi := Intval (Type_High_Bound (Standard_Integer_64));
1094 Delta_Val := UR_From_Components (Uint_1, Uint_9, 10);
1095 end if;
1096
1097 Tdef_Node := Make_Ordinary_Fixed_Point_Definition (Stloc,
1098 Delta_Expression => Make_Real_Literal (Stloc, Delta_Val),
1099 Real_Range_Specification =>
1100 Make_Real_Range_Specification (Stloc,
1101 Low_Bound => Make_Real_Literal (Stloc,
1102 Realval => Dlo * Delta_Val),
1103 High_Bound => Make_Real_Literal (Stloc,
1104 Realval => Dhi * Delta_Val)));
1105
1106 Set_Type_Definition (Parent (Standard_Duration), Tdef_Node);
1107
1108 Set_Ekind (Standard_Duration, E_Ordinary_Fixed_Point_Type);
1109 Set_Etype (Standard_Duration, Standard_Duration);
1110
1111 if Duration_32_Bits_On_Target then
1112 Init_Size (Standard_Duration, 32);
1113 else
1114 Init_Size (Standard_Duration, 64);
1115 end if;
1116
1117 Set_Elem_Alignment (Standard_Duration);
1118 Set_Delta_Value (Standard_Duration, Delta_Val);
1119 Set_Small_Value (Standard_Duration, Delta_Val);
1120 Set_Scalar_Range (Standard_Duration,
1121 Real_Range_Specification
1122 (Type_Definition (Parent (Standard_Duration))));
1123
1124 -- Normally it does not matter that nodes in package Standard are
1125 -- not marked as analyzed. The Scalar_Range of the fixed-point
1126 -- type Standard_Duration is an exception, because of the special
1127 -- test made in Freeze.Freeze_Fixed_Point_Type.
1128
1129 Set_Analyzed (Scalar_Range (Standard_Duration));
1130
1131 Set_Etype (Type_High_Bound (Standard_Duration), Standard_Duration);
1132 Set_Etype (Type_Low_Bound (Standard_Duration), Standard_Duration);
1133
1134 Set_Is_Static_Expression (Type_High_Bound (Standard_Duration));
1135 Set_Is_Static_Expression (Type_Low_Bound (Standard_Duration));
1136
1137 Set_Corresponding_Integer_Value
1138 (Type_High_Bound (Standard_Duration), Dhi);
1139
1140 Set_Corresponding_Integer_Value
1141 (Type_Low_Bound (Standard_Duration), Dlo);
1142
1143 Set_Size_Known_At_Compile_Time (Standard_Duration);
1144 end Build_Duration;
1145
1146 -- Build standard exception type. Note that the type name here is
1147 -- actually used in the generated code, so it must be set correctly
1148
1149 -- ??? Also note that the Import_Code component is now declared
1150 -- as a System.Standard_Library.Exception_Code to enforce run-time
1151 -- library implementation consistency. It's too early here to resort
1152 -- to rtsfind to get the proper node for that type, so we use the
1153 -- closest possible available type node at hand instead. We should
1154 -- probably be fixing this up at some point.
1155
1156 Standard_Exception_Type := New_Standard_Entity;
1157 Set_Ekind (Standard_Exception_Type, E_Record_Type);
1158 Set_Etype (Standard_Exception_Type, Standard_Exception_Type);
1159 Set_Scope (Standard_Exception_Type, Standard_Standard);
1160 Set_Stored_Constraint
1161 (Standard_Exception_Type, No_Elist);
1162 Init_Size_Align (Standard_Exception_Type);
1163 Set_Size_Known_At_Compile_Time
1164 (Standard_Exception_Type, True);
1165 Make_Name (Standard_Exception_Type, "exception");
1166
1167 Make_Component (Standard_Exception_Type, Standard_Boolean,
1168 "Not_Handled_By_Others");
1169 Make_Component (Standard_Exception_Type, Standard_Character, "Lang");
1170 Make_Component (Standard_Exception_Type, Standard_Natural,
1171 "Name_Length");
1172 Make_Component (Standard_Exception_Type, Standard_A_Char,
1173 "Full_Name");
1174 Make_Component (Standard_Exception_Type, Standard_A_Char,
1175 "HTable_Ptr");
1176 Make_Component (Standard_Exception_Type, Standard_Unsigned,
1177 "Import_Code");
1178 Make_Component (Standard_Exception_Type, Standard_A_Char,
1179 "Raise_Hook");
1180 -- Build tree for record declaration, for use by the back-end.
1181
1182 declare
1183 Comp_List : List_Id;
1184 Comp : Entity_Id;
1185
1186 begin
1187 Comp := First_Entity (Standard_Exception_Type);
1188 Comp_List := New_List;
1189
1190 while Present (Comp) loop
1191 Append (
1192 Make_Component_Declaration (Stloc,
1193 Defining_Identifier => Comp,
1194 Component_Definition =>
1195 Make_Component_Definition (Stloc,
1196 Aliased_Present => False,
1197 Subtype_Indication => New_Occurrence_Of (Etype (Comp),
1198 Stloc))),
1199 Comp_List);
1200
1201 Next_Entity (Comp);
1202 end loop;
1203
1204 Decl := Make_Full_Type_Declaration (Stloc,
1205 Defining_Identifier => Standard_Exception_Type,
1206 Type_Definition =>
1207 Make_Record_Definition (Stloc,
1208 End_Label => Empty,
1209 Component_List =>
1210 Make_Component_List (Stloc,
1211 Component_Items => Comp_List)));
1212 end;
1213
1214 Append (Decl, Decl_S);
1215
1216 Layout_Type (Standard_Exception_Type);
1217
1218 -- Create declarations of standard exceptions
1219
1220 Build_Exception (S_Constraint_Error);
1221 Build_Exception (S_Program_Error);
1222 Build_Exception (S_Storage_Error);
1223 Build_Exception (S_Tasking_Error);
1224
1225 -- Numeric_Error is a normal exception in Ada 83, but in Ada 95
1226 -- it is a renaming of Constraint_Error. Is this test too early???
1227
1228 if Ada_Version = Ada_83 then
1229 Build_Exception (S_Numeric_Error);
1230
1231 else
1232 Decl := New_Node (N_Exception_Renaming_Declaration, Stloc);
1233 E_Id := Standard_Entity (S_Numeric_Error);
1234
1235 Set_Ekind (E_Id, E_Exception);
1236 Set_Exception_Code (E_Id, Uint_0);
1237 Set_Etype (E_Id, Standard_Exception_Type);
1238 Set_Is_Public (E_Id);
1239 Set_Renamed_Entity (E_Id, Standard_Entity (S_Constraint_Error));
1240
1241 Set_Defining_Identifier (Decl, E_Id);
1242 Append (Decl, Decl_S);
1243
1244 Ident_Node := New_Node (N_Identifier, Stloc);
1245 Set_Chars (Ident_Node, Chars (Standard_Entity (S_Constraint_Error)));
1246 Set_Entity (Ident_Node, Standard_Entity (S_Constraint_Error));
1247 Set_Name (Decl, Ident_Node);
1248 end if;
1249
1250 -- Abort_Signal is an entity that does not get made visible
1251
1252 Abort_Signal := New_Standard_Entity;
1253 Set_Chars (Abort_Signal, Name_uAbort_Signal);
1254 Set_Ekind (Abort_Signal, E_Exception);
1255 Set_Exception_Code (Abort_Signal, Uint_0);
1256 Set_Etype (Abort_Signal, Standard_Exception_Type);
1257 Set_Scope (Abort_Signal, Standard_Standard);
1258 Set_Is_Public (Abort_Signal, True);
1259 Decl :=
1260 Make_Exception_Declaration (Stloc,
1261 Defining_Identifier => Abort_Signal);
1262
1263 -- Create defining identifiers for shift operator entities. Note
1264 -- that these entities are used only for marking shift operators
1265 -- generated internally, and hence need no structure, just a name
1266 -- and a unique identity.
1267
1268 Standard_Op_Rotate_Left := New_Standard_Entity;
1269 Set_Chars (Standard_Op_Rotate_Left, Name_Rotate_Left);
1270 Set_Ekind (Standard_Op_Rotate_Left, E_Operator);
1271
1272 Standard_Op_Rotate_Right := New_Standard_Entity;
1273 Set_Chars (Standard_Op_Rotate_Right, Name_Rotate_Right);
1274 Set_Ekind (Standard_Op_Rotate_Right, E_Operator);
1275
1276 Standard_Op_Shift_Left := New_Standard_Entity;
1277 Set_Chars (Standard_Op_Shift_Left, Name_Shift_Left);
1278 Set_Ekind (Standard_Op_Shift_Left, E_Operator);
1279
1280 Standard_Op_Shift_Right := New_Standard_Entity;
1281 Set_Chars (Standard_Op_Shift_Right, Name_Shift_Right);
1282 Set_Ekind (Standard_Op_Shift_Right, E_Operator);
1283
1284 Standard_Op_Shift_Right_Arithmetic := New_Standard_Entity;
1285 Set_Chars (Standard_Op_Shift_Right_Arithmetic,
1286 Name_Shift_Right_Arithmetic);
1287 Set_Ekind (Standard_Op_Shift_Right_Arithmetic,
1288 E_Operator);
1289
1290 -- Create standard operator declarations
1291
1292 Create_Operators;
1293
1294 -- Initialize visibility table with entities in Standard
1295
1296 for E in Standard_Entity_Type loop
1297 if Ekind (Standard_Entity (E)) /= E_Operator then
1298 Set_Name_Entity_Id
1299 (Chars (Standard_Entity (E)), Standard_Entity (E));
1300 Set_Homonym (Standard_Entity (E), Empty);
1301 end if;
1302
1303 if E not in S_ASCII_Names then
1304 Set_Scope (Standard_Entity (E), Standard_Standard);
1305 Set_Is_Immediately_Visible (Standard_Entity (E));
1306 end if;
1307 end loop;
1308
1309 -- The predefined package Standard itself does not have a scope;
1310 -- it is the only entity in the system not to have one, and this
1311 -- is what identifies the package to Gigi.
1312
1313 Set_Scope (Standard_Standard, Empty);
1314
1315 -- Set global variables indicating last Id values and version
1316
1317 Last_Standard_Node_Id := Last_Node_Id;
1318 Last_Standard_List_Id := Last_List_Id;
1319
1320 -- The Error node has an Etype of Any_Type to help error recovery
1321
1322 Set_Etype (Error, Any_Type);
1323
1324 -- Print representation of standard if switch set
1325
1326 if Opt.Print_Standard then
1327 Print_Standard;
1328 end if;
1329 end Create_Standard;
1330
1331 ------------------------------------
1332 -- Create_Unconstrained_Base_Type --
1333 ------------------------------------
1334
1335 procedure Create_Unconstrained_Base_Type
1336 (E : Entity_Id;
1337 K : Entity_Kind)
1338 is
1339 New_Ent : constant Entity_Id := New_Copy (E);
1340
1341 begin
1342 Set_Ekind (E, K);
1343 Set_Is_Constrained (E, True);
1344 Set_Is_First_Subtype (E, True);
1345 Set_Etype (E, New_Ent);
1346
1347 Append_Entity (New_Ent, Standard_Standard);
1348 Set_Is_Constrained (New_Ent, False);
1349 Set_Etype (New_Ent, New_Ent);
1350 Set_Is_Known_Valid (New_Ent, True);
1351
1352 if K = E_Signed_Integer_Subtype then
1353 Set_Etype (Low_Bound (Scalar_Range (E)), New_Ent);
1354 Set_Etype (High_Bound (Scalar_Range (E)), New_Ent);
1355 end if;
1356
1357 end Create_Unconstrained_Base_Type;
1358
1359 --------------------
1360 -- Identifier_For --
1361 --------------------
1362
1363 function Identifier_For (S : Standard_Entity_Type) return Node_Id is
1364 Ident_Node : Node_Id;
1365
1366 begin
1367 Ident_Node := New_Node (N_Identifier, Stloc);
1368 Set_Chars (Ident_Node, Chars (Standard_Entity (S)));
1369 return Ident_Node;
1370 end Identifier_For;
1371
1372 --------------------
1373 -- Make_Component --
1374 --------------------
1375
1376 procedure Make_Component
1377 (Rec : Entity_Id;
1378 Typ : Entity_Id;
1379 Nam : String)
1380 is
1381 Id : constant Entity_Id := New_Standard_Entity;
1382
1383 begin
1384 Set_Ekind (Id, E_Component);
1385 Set_Etype (Id, Typ);
1386 Set_Scope (Id, Rec);
1387 Init_Component_Location (Id);
1388
1389 Set_Original_Record_Component (Id, Id);
1390 Make_Name (Id, Nam);
1391 Append_Entity (Id, Rec);
1392 end Make_Component;
1393
1394 -----------------
1395 -- Make_Formal --
1396 -----------------
1397
1398 function Make_Formal
1399 (Typ : Entity_Id;
1400 Formal_Name : String) return Entity_Id
1401 is
1402 Formal : Entity_Id;
1403
1404 begin
1405 Formal := New_Standard_Entity;
1406
1407 Set_Ekind (Formal, E_In_Parameter);
1408 Set_Mechanism (Formal, Default_Mechanism);
1409 Set_Scope (Formal, Standard_Standard);
1410 Set_Etype (Formal, Typ);
1411 Make_Name (Formal, Formal_Name);
1412
1413 return Formal;
1414 end Make_Formal;
1415
1416 ------------------
1417 -- Make_Integer --
1418 ------------------
1419
1420 function Make_Integer (V : Uint) return Node_Id is
1421 N : constant Node_Id := Make_Integer_Literal (Stloc, V);
1422 begin
1423 Set_Is_Static_Expression (N);
1424 return N;
1425 end Make_Integer;
1426
1427 ---------------
1428 -- Make_Name --
1429 ---------------
1430
1431 procedure Make_Name (Id : Entity_Id; Nam : String) is
1432 begin
1433 for J in 1 .. Nam'Length loop
1434 Name_Buffer (J) := Fold_Lower (Nam (Nam'First + (J - 1)));
1435 end loop;
1436
1437 Name_Len := Nam'Length;
1438 Set_Chars (Id, Name_Find);
1439 end Make_Name;
1440
1441 ------------------
1442 -- New_Operator --
1443 ------------------
1444
1445 function New_Operator (Op : Name_Id; Typ : Entity_Id) return Entity_Id is
1446 Ident_Node : Entity_Id;
1447
1448 begin
1449 Ident_Node := Make_Defining_Identifier (Stloc, Op);
1450
1451 Set_Is_Pure (Ident_Node, True);
1452 Set_Ekind (Ident_Node, E_Operator);
1453 Set_Etype (Ident_Node, Typ);
1454 Set_Scope (Ident_Node, Standard_Standard);
1455 Set_Homonym (Ident_Node, Get_Name_Entity_Id (Op));
1456 Set_Convention (Ident_Node, Convention_Intrinsic);
1457
1458 Set_Is_Immediately_Visible (Ident_Node, True);
1459 Set_Is_Intrinsic_Subprogram (Ident_Node, True);
1460
1461 Set_Name_Entity_Id (Op, Ident_Node);
1462 Append_Entity (Ident_Node, Standard_Standard);
1463 return Ident_Node;
1464 end New_Operator;
1465
1466 -------------------------
1467 -- New_Standard_Entity --
1468 -------------------------
1469
1470 function New_Standard_Entity
1471 (New_Node_Kind : Node_Kind := N_Defining_Identifier) return Entity_Id
1472 is
1473 E : constant Entity_Id := New_Entity (New_Node_Kind, Stloc);
1474
1475 begin
1476 -- All standard entities are Pure and Public
1477
1478 Set_Is_Pure (E);
1479 Set_Is_Public (E);
1480
1481 -- All standard entity names are analyzed manually, and are thus
1482 -- frozen as soon as they are created.
1483
1484 Set_Is_Frozen (E);
1485
1486 -- Set debug information required for all standard types
1487
1488 Set_Needs_Debug_Info (E);
1489
1490 -- All standard entities are built with fully qualified names, so
1491 -- set the flag to prevent an abortive attempt at requalification!
1492
1493 Set_Has_Qualified_Name (E);
1494
1495 -- Return newly created entity to be completed by caller
1496
1497 return E;
1498 end New_Standard_Entity;
1499
1500 --------------------
1501 -- Print_Standard --
1502 --------------------
1503
1504 procedure Print_Standard is
1505
1506 procedure P (Item : String) renames Output.Write_Line;
1507 -- Short-hand, since we do a lot of line writes here!
1508
1509 procedure P_Int_Range (Size : Pos);
1510 -- Prints the range of an integer based on its Size
1511
1512 procedure P_Float_Range (Id : Entity_Id);
1513 -- Prints the bounds range for the given float type entity
1514
1515 -------------------
1516 -- P_Float_Range --
1517 -------------------
1518
1519 procedure P_Float_Range (Id : Entity_Id) is
1520 Digs : constant Nat := UI_To_Int (Digits_Value (Id));
1521
1522 begin
1523 Write_Str (" range ");
1524
1525 if Vax_Float (Id) then
1526 if Digs = VAXFF_Digits then
1527 Write_Str (VAXFF_First'Universal_Literal_String);
1528 Write_Str (" .. ");
1529 Write_Str (VAXFF_Last'Universal_Literal_String);
1530
1531 elsif Digs = VAXDF_Digits then
1532 Write_Str (VAXDF_First'Universal_Literal_String);
1533 Write_Str (" .. ");
1534 Write_Str (VAXDF_Last'Universal_Literal_String);
1535
1536 else
1537 pragma Assert (Digs = VAXGF_Digits);
1538
1539 Write_Str (VAXGF_First'Universal_Literal_String);
1540 Write_Str (" .. ");
1541 Write_Str (VAXGF_Last'Universal_Literal_String);
1542 end if;
1543
1544 elsif Is_AAMP_Float (Id) then
1545 if Digs = AAMPS_Digits then
1546 Write_Str (AAMPS_First'Universal_Literal_String);
1547 Write_Str (" .. ");
1548 Write_Str (AAMPS_Last'Universal_Literal_String);
1549
1550 else
1551 pragma Assert (Digs = AAMPL_Digits);
1552 Write_Str (AAMPL_First'Universal_Literal_String);
1553 Write_Str (" .. ");
1554 Write_Str (AAMPL_Last'Universal_Literal_String);
1555 end if;
1556
1557 elsif Digs = IEEES_Digits then
1558 Write_Str (IEEES_First'Universal_Literal_String);
1559 Write_Str (" .. ");
1560 Write_Str (IEEES_Last'Universal_Literal_String);
1561
1562 elsif Digs = IEEEL_Digits then
1563 Write_Str (IEEEL_First'Universal_Literal_String);
1564 Write_Str (" .. ");
1565 Write_Str (IEEEL_Last'Universal_Literal_String);
1566
1567 else
1568 pragma Assert (Digs = IEEEX_Digits);
1569
1570 Write_Str (IEEEX_First'Universal_Literal_String);
1571 Write_Str (" .. ");
1572 Write_Str (IEEEX_Last'Universal_Literal_String);
1573 end if;
1574
1575 Write_Str (";");
1576 Write_Eol;
1577 end P_Float_Range;
1578
1579 -----------------
1580 -- P_Int_Range --
1581 -----------------
1582
1583 procedure P_Int_Range (Size : Pos) is
1584 begin
1585 Write_Str (" is range -(2 **");
1586 Write_Int (Size - 1);
1587 Write_Str (")");
1588 Write_Str (" .. +(2 **");
1589 Write_Int (Size - 1);
1590 Write_Str (" - 1);");
1591 Write_Eol;
1592 end P_Int_Range;
1593
1594 -- Start of processing for Print_Standard
1595
1596 begin
1597 P ("-- Representation of package Standard");
1598 Write_Eol;
1599 P ("-- This is not accurate Ada, since new base types cannot be ");
1600 P ("-- created, but the listing shows the target dependent");
1601 P ("-- characteristics of the Standard types for this compiler");
1602 Write_Eol;
1603
1604 P ("package Standard is");
1605 P ("pragma Pure(Standard);");
1606 Write_Eol;
1607
1608 P (" type Boolean is (False, True);");
1609 P (" for Boolean'Size use 1;");
1610 P (" for Boolean use (False => 0, True => 1);");
1611 Write_Eol;
1612
1613 -- Integer types
1614
1615 Write_Str (" type Integer");
1616 P_Int_Range (Standard_Integer_Size);
1617 Write_Str (" for Integer'Size use ");
1618 Write_Int (Standard_Integer_Size);
1619 P (";");
1620 Write_Eol;
1621
1622 P (" subtype Natural is Integer range 0 .. Integer'Last;");
1623 P (" subtype Positive is Integer range 1 .. Integer'Last;");
1624 Write_Eol;
1625
1626 Write_Str (" type Short_Short_Integer");
1627 P_Int_Range (Standard_Short_Short_Integer_Size);
1628 Write_Str (" for Short_Short_Integer'Size use ");
1629 Write_Int (Standard_Short_Short_Integer_Size);
1630 P (";");
1631 Write_Eol;
1632
1633 Write_Str (" type Short_Integer");
1634 P_Int_Range (Standard_Short_Integer_Size);
1635 Write_Str (" for Short_Integer'Size use ");
1636 Write_Int (Standard_Short_Integer_Size);
1637 P (";");
1638 Write_Eol;
1639
1640 Write_Str (" type Long_Integer");
1641 P_Int_Range (Standard_Long_Integer_Size);
1642 Write_Str (" for Long_Integer'Size use ");
1643 Write_Int (Standard_Long_Integer_Size);
1644 P (";");
1645 Write_Eol;
1646
1647 Write_Str (" type Long_Long_Integer");
1648 P_Int_Range (Standard_Long_Long_Integer_Size);
1649 Write_Str (" for Long_Long_Integer'Size use ");
1650 Write_Int (Standard_Long_Long_Integer_Size);
1651 P (";");
1652 Write_Eol;
1653
1654 -- Floating point types
1655
1656 Write_Str (" type Short_Float is digits ");
1657 Write_Int (Standard_Short_Float_Digits);
1658 Write_Eol;
1659 P_Float_Range (Standard_Short_Float);
1660 Write_Str (" for Short_Float'Size use ");
1661 Write_Int (Standard_Short_Float_Size);
1662 P (";");
1663 Write_Eol;
1664
1665 Write_Str (" type Float is digits ");
1666 Write_Int (Standard_Float_Digits);
1667 Write_Eol;
1668 P_Float_Range (Standard_Float);
1669 Write_Str (" for Float'Size use ");
1670 Write_Int (Standard_Float_Size);
1671 P (";");
1672 Write_Eol;
1673
1674 Write_Str (" type Long_Float is digits ");
1675 Write_Int (Standard_Long_Float_Digits);
1676 Write_Eol;
1677 P_Float_Range (Standard_Long_Float);
1678 Write_Str (" for Long_Float'Size use ");
1679 Write_Int (Standard_Long_Float_Size);
1680 P (";");
1681 Write_Eol;
1682
1683 Write_Str (" type Long_Long_Float is digits ");
1684 Write_Int (Standard_Long_Long_Float_Digits);
1685 Write_Eol;
1686 P_Float_Range (Standard_Long_Long_Float);
1687 Write_Str (" for Long_Long_Float'Size use ");
1688 Write_Int (Standard_Long_Long_Float_Size);
1689 P (";");
1690 Write_Eol;
1691
1692 P (" type Character is (...)");
1693 Write_Str (" for Character'Size use ");
1694 Write_Int (Standard_Character_Size);
1695 P (";");
1696 P (" -- See RM A.1(35) for details of this type");
1697 Write_Eol;
1698
1699 P (" type Wide_Character is (...)");
1700 Write_Str (" for Wide_Character'Size use ");
1701 Write_Int (Standard_Wide_Character_Size);
1702 P (";");
1703 P (" -- See RM A.1(36) for details of this type");
1704 Write_Eol;
1705
1706 P (" type String is array (Positive range <>) of Character;");
1707 P (" pragma Pack (String);");
1708 Write_Eol;
1709
1710 P (" type Wide_String is array (Positive range <>)" &
1711 " of Wide_Character;");
1712 P (" pragma Pack (Wide_String);");
1713 Write_Eol;
1714
1715 -- Here it's OK to use the Duration type of the host compiler since
1716 -- the implementation of Duration in GNAT is target independent.
1717
1718 if Duration_32_Bits_On_Target then
1719 P (" type Duration is delta 0.020");
1720 P (" range -((2 ** 31 - 1) * 0.020) ..");
1721 P (" +((2 ** 31 - 1) * 0.020);");
1722 P (" for Duration'Small use 0.020;");
1723 else
1724 P (" type Duration is delta 0.000000001");
1725 P (" range -((2 ** 63 - 1) * 0.000000001) ..");
1726 P (" +((2 ** 63 - 1) * 0.000000001);");
1727 P (" for Duration'Small use 0.000000001;");
1728 end if;
1729
1730 Write_Eol;
1731
1732 P (" Constraint_Error : exception;");
1733 P (" Program_Error : exception;");
1734 P (" Storage_Error : exception;");
1735 P (" Tasking_Error : exception;");
1736 P (" Numeric_Error : exception renames Constraint_Error;");
1737 Write_Eol;
1738
1739 P ("end Standard;");
1740 end Print_Standard;
1741
1742 ----------------------
1743 -- Set_Float_Bounds --
1744 ----------------------
1745
1746 procedure Set_Float_Bounds (Id : Entity_Id) is
1747 L : Node_Id;
1748 -- Low bound of literal value
1749
1750 H : Node_Id;
1751 -- High bound of literal value
1752
1753 R : Node_Id;
1754 -- Range specification
1755
1756 Digs : constant Nat := UI_To_Int (Digits_Value (Id));
1757 -- Digits value, used to select bounds
1758
1759 begin
1760 -- Note: for the call from Cstand to initially create the types in
1761 -- Standard, Vax_Float will always be False. Circuitry in Sem_Vfpt
1762 -- will adjust these types appropriately in the Vax_Float case if
1763 -- a pragma Float_Representation (VAX_Float) is used.
1764
1765 if Vax_Float (Id) then
1766 if Digs = VAXFF_Digits then
1767 L := Real_Convert
1768 (VAXFF_First'Universal_Literal_String);
1769 H := Real_Convert
1770 (VAXFF_Last'Universal_Literal_String);
1771
1772 elsif Digs = VAXDF_Digits then
1773 L := Real_Convert
1774 (VAXDF_First'Universal_Literal_String);
1775 H := Real_Convert
1776 (VAXDF_Last'Universal_Literal_String);
1777
1778 else
1779 pragma Assert (Digs = VAXGF_Digits);
1780
1781 L := Real_Convert
1782 (VAXGF_First'Universal_Literal_String);
1783 H := Real_Convert
1784 (VAXGF_Last'Universal_Literal_String);
1785 end if;
1786
1787 elsif Is_AAMP_Float (Id) then
1788 if Digs = AAMPS_Digits then
1789 L := Real_Convert
1790 (AAMPS_First'Universal_Literal_String);
1791 H := Real_Convert
1792 (AAMPS_Last'Universal_Literal_String);
1793
1794 else
1795 pragma Assert (Digs = AAMPL_Digits);
1796 L := Real_Convert
1797 (AAMPL_First'Universal_Literal_String);
1798 H := Real_Convert
1799 (AAMPL_Last'Universal_Literal_String);
1800 end if;
1801
1802 elsif Digs = IEEES_Digits then
1803 L := Real_Convert
1804 (IEEES_First'Universal_Literal_String);
1805 H := Real_Convert
1806 (IEEES_Last'Universal_Literal_String);
1807
1808 elsif Digs = IEEEL_Digits then
1809 L := Real_Convert
1810 (IEEEL_First'Universal_Literal_String);
1811 H := Real_Convert
1812 (IEEEL_Last'Universal_Literal_String);
1813
1814 else
1815 pragma Assert (Digs = IEEEX_Digits);
1816
1817 L := Real_Convert
1818 (IEEEX_First'Universal_Literal_String);
1819 H := Real_Convert
1820 (IEEEX_Last'Universal_Literal_String);
1821 end if;
1822
1823 Set_Etype (L, Id);
1824 Set_Is_Static_Expression (L);
1825
1826 Set_Etype (H, Id);
1827 Set_Is_Static_Expression (H);
1828
1829 R := New_Node (N_Range, Stloc);
1830 Set_Low_Bound (R, L);
1831 Set_High_Bound (R, H);
1832 Set_Includes_Infinities (R, True);
1833 Set_Scalar_Range (Id, R);
1834 Set_Etype (R, Id);
1835 Set_Parent (R, Id);
1836 end Set_Float_Bounds;
1837
1838 ------------------------
1839 -- Set_Integer_Bounds --
1840 ------------------------
1841
1842 procedure Set_Integer_Bounds
1843 (Id : Entity_Id;
1844 Typ : Entity_Id;
1845 Lb : Uint;
1846 Hb : Uint)
1847 is
1848 L : Node_Id; -- Low bound of literal value
1849 H : Node_Id; -- High bound of literal value
1850 R : Node_Id; -- Range specification
1851
1852 begin
1853 L := Make_Integer (Lb);
1854 H := Make_Integer (Hb);
1855
1856 Set_Etype (L, Typ);
1857 Set_Etype (H, Typ);
1858
1859 R := New_Node (N_Range, Stloc);
1860 Set_Low_Bound (R, L);
1861 Set_High_Bound (R, H);
1862 Set_Scalar_Range (Id, R);
1863 Set_Etype (R, Typ);
1864 Set_Parent (R, Id);
1865 Set_Is_Unsigned_Type (Id, Lb >= 0);
1866 end Set_Integer_Bounds;
1867
1868 end CStand;
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