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Fix unused warnings.
[official-gcc/graphite-test-results.git] / gcc / ada / cstand.adb
blobbc85f0c50445a61f54356ad5942c189d0d4db6f9
1 ------------------------------------------------------------------------------
2 -- --
3 -- GNAT COMPILER COMPONENTS --
4 -- --
5 -- C S T A N D --
6 -- --
7 -- B o d y --
8 -- --
9 -- Copyright (C) 1992-2010, 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 3, 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 COPYING3. If not, go to --
19 -- http://www.gnu.org/licenses for a complete copy of the license. --
20 -- --
21 -- GNAT was originally developed by the GNAT team at New York University. --
22 -- Extensive contributions were provided by Ada Core Technologies Inc. --
23 -- --
24 ------------------------------------------------------------------------------
25
26 with Atree; use Atree;
27 with Csets; use Csets;
28 with Debug; use Debug;
29 with Einfo; use Einfo;
30 with Layout; use Layout;
31 with Namet; use Namet;
32 with Nlists; use Nlists;
33 with Nmake; use Nmake;
34 with Opt; use Opt;
35 with Output; use Output;
36 with Targparm; use Targparm;
37 with Tbuild; use Tbuild;
38 with Ttypes; use Ttypes;
39 with Ttypef; use Ttypef;
40 with Scn;
41 with Sem_Mech; use Sem_Mech;
42 with Sem_Util; use Sem_Util;
43 with Sinfo; use Sinfo;
44 with Snames; use Snames;
45 with Stand; use Stand;
46 with Uintp; use Uintp;
47 with Urealp; use Urealp;
48
49 package body CStand is
50
51 Stloc : constant Source_Ptr := Standard_Location;
52 Staloc : constant Source_Ptr := Standard_ASCII_Location;
53 -- Standard abbreviations used throughout this package
54
55 -----------------------
56 -- Local Subprograms --
57 -----------------------
58
59 procedure Build_Float_Type (E : Entity_Id; Siz : Int; Digs : Int);
60 -- Procedure to build standard predefined float base type. The first
61 -- parameter is the entity for the type, and the second parameter
62 -- is the size in bits. The third parameter is the digits value.
63
64 procedure Build_Signed_Integer_Type (E : Entity_Id; Siz : Int);
65 -- Procedure to build standard predefined signed integer subtype. The
66 -- first parameter is the entity for the subtype. The second parameter
67 -- is the size in bits. The corresponding base type is not built by
68 -- this routine but instead must be built by the caller where needed.
69
70 procedure Create_Operators;
71 -- Make entries for each of the predefined operators in Standard
72
73 procedure Create_Unconstrained_Base_Type
74 (E : Entity_Id;
75 K : Entity_Kind);
76 -- The predefined signed integer types are constrained subtypes which
77 -- must have a corresponding unconstrained base type. This type is almost
78 -- useless. The only place it has semantics is Subtypes_Statically_Match.
79 -- Consequently, we arrange for it to be identical apart from the setting
80 -- of the constrained bit. This routine takes an entity E for the Type,
81 -- copies it to estabish the base type, then resets the Ekind of the
82 -- original entity to K (the Ekind for the subtype). The Etype field of
83 -- E is set by the call (to point to the created base type entity), and
84 -- also the Is_Constrained flag of E is set.
85 --
86 -- To understand the exact requirement for this, see RM 3.5.4(11) which
87 -- makes it clear that Integer, for example, is constrained, with the
88 -- constraint bounds matching the bounds of the (unconstrained) base
89 -- type. The point is that Integer and Integer'Base have identical
90 -- bounds, but do not statically match, since a subtype with constraints
91 -- never matches a subtype with no constraints.
92
93 function Identifier_For (S : Standard_Entity_Type) return Node_Id;
94 -- Returns an identifier node with the same name as the defining
95 -- identifier corresponding to the given Standard_Entity_Type value
96
97 procedure Make_Component
98 (Rec : Entity_Id;
99 Typ : Entity_Id;
100 Nam : String);
101 -- Build a record component with the given type and name, and append to
102 -- the list of components of Rec.
103
104 function Make_Formal
105 (Typ : Entity_Id;
106 Formal_Name : String) return Entity_Id;
107 -- Construct entity for subprogram formal with given name and type
108
109 function Make_Integer (V : Uint) return Node_Id;
110 -- Builds integer literal with given value
111
112 procedure Make_Name (Id : Entity_Id; Nam : String);
113 -- Make an entry in the names table for Nam, and set as Chars field of Id
114
115 function New_Operator (Op : Name_Id; Typ : Entity_Id) return Entity_Id;
116 -- Build entity for standard operator with given name and type
117
118 function New_Standard_Entity
119 (New_Node_Kind : Node_Kind := N_Defining_Identifier) return Entity_Id;
120 -- Builds a new entity for Standard
121
122 procedure Print_Standard;
123 -- Print representation of package Standard if switch set
124
125 procedure Set_Integer_Bounds
126 (Id : Entity_Id;
127 Typ : Entity_Id;
128 Lb : Uint;
129 Hb : Uint);
130 -- Procedure to set bounds for integer type or subtype. Id is the entity
131 -- whose bounds and type are to be set. The Typ parameter is the Etype
132 -- value for the entity (which will be the same as Id for all predefined
133 -- integer base types. The third and fourth parameters are the bounds.
134
135 ----------------------
136 -- Build_Float_Type --
137 ----------------------
138
139 procedure Build_Float_Type (E : Entity_Id; Siz : Int; Digs : Int) is
140 begin
141 Set_Type_Definition (Parent (E),
142 Make_Floating_Point_Definition (Stloc,
143 Digits_Expression => Make_Integer (UI_From_Int (Digs))));
144 Set_Ekind (E, E_Floating_Point_Type);
145 Set_Etype (E, E);
146 Init_Size (E, Siz);
147 Set_Elem_Alignment (E);
148 Init_Digits_Value (E, Digs);
149 Set_Float_Bounds (E);
150 Set_Is_Frozen (E);
151 Set_Is_Public (E);
152 Set_Size_Known_At_Compile_Time (E);
153 end Build_Float_Type;
154
155 -------------------------------
156 -- Build_Signed_Integer_Type --
157 -------------------------------
158
159 procedure Build_Signed_Integer_Type (E : Entity_Id; Siz : Int) is
160 U2Siz1 : constant Uint := 2 ** (Siz - 1);
161 Lbound : constant Uint := -U2Siz1;
162 Ubound : constant Uint := U2Siz1 - 1;
163
164 begin
165 Set_Type_Definition (Parent (E),
166 Make_Signed_Integer_Type_Definition (Stloc,
167 Low_Bound => Make_Integer (Lbound),
168 High_Bound => Make_Integer (Ubound)));
169
170 Set_Ekind (E, E_Signed_Integer_Type);
171 Set_Etype (E, E);
172 Init_Size (E, Siz);
173 Set_Elem_Alignment (E);
174 Set_Integer_Bounds (E, E, Lbound, Ubound);
175 Set_Is_Frozen (E);
176 Set_Is_Public (E);
177 Set_Is_Known_Valid (E);
178 Set_Size_Known_At_Compile_Time (E);
179 end Build_Signed_Integer_Type;
180
181 ----------------------
182 -- Create_Operators --
183 ----------------------
184
185 -- Each operator has an abbreviated signature. The formals have the names
186 -- LEFT and RIGHT. Their types are not actually used for resolution.
187
188 procedure Create_Operators is
189 Op_Node : Entity_Id;
190
191 -- The following tables define the binary and unary operators and their
192 -- corresponding result type.
193
194 Binary_Ops : constant array (S_Binary_Ops) of Name_Id :=
195
196 -- There is one entry here for each binary operator, except for the
197 -- case of concatenation, where there are three entries, one for a
198 -- String result, one for Wide_String, and one for Wide_Wide_String.
199
200 (Name_Op_Add,
201 Name_Op_And,
202 Name_Op_Concat,
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 Standard_Wide_Wide_String, -- Concat (Wide_Wide_String)
230 Universal_Integer, -- Divide
231 Standard_Boolean, -- Eq
232 Universal_Integer, -- Expon
233 Standard_Boolean, -- Ge
234 Standard_Boolean, -- Gt
235 Standard_Boolean, -- Le
236 Standard_Boolean, -- Lt
237 Universal_Integer, -- Mod
238 Universal_Integer, -- Multiply
239 Standard_Boolean, -- Ne
240 Standard_Boolean, -- Or
241 Universal_Integer, -- Rem
242 Universal_Integer, -- Subtract
243 Standard_Boolean); -- Xor
244
245 Unary_Ops : constant array (S_Unary_Ops) of Name_Id :=
246
247 -- There is one entry here for each unary operator
248
249 (Name_Op_Abs,
250 Name_Op_Subtract,
251 Name_Op_Not,
252 Name_Op_Add);
253
254 Unary_Op_Types : constant array (S_Unary_Ops) of Entity_Id :=
255
256 -- This table has the corresponding result types. The entries are
257 -- ordered so they correspond to the Unary_Ops array above.
258
259 (Universal_Integer, -- Abs
260 Universal_Integer, -- Subtract
261 Standard_Boolean, -- Not
262 Universal_Integer); -- Add
263
264 begin
265 for J in S_Binary_Ops loop
266 Op_Node := New_Operator (Binary_Ops (J), Bin_Op_Types (J));
267 SE (J) := Op_Node;
268 Append_Entity (Make_Formal (Any_Type, "LEFT"), Op_Node);
269 Append_Entity (Make_Formal (Any_Type, "RIGHT"), Op_Node);
270 end loop;
271
272 for J in S_Unary_Ops loop
273 Op_Node := New_Operator (Unary_Ops (J), Unary_Op_Types (J));
274 SE (J) := Op_Node;
275 Append_Entity (Make_Formal (Any_Type, "RIGHT"), Op_Node);
276 end loop;
277
278 -- For concatenation, we create a separate operator for each
279 -- array type. This simplifies the resolution of the component-
280 -- component concatenation operation. In Standard, we set the types
281 -- of the formals for string, wide [wide]_string, concatenations.
282
283 Set_Etype (First_Entity (Standard_Op_Concat), Standard_String);
284 Set_Etype (Last_Entity (Standard_Op_Concat), Standard_String);
285
286 Set_Etype (First_Entity (Standard_Op_Concatw), Standard_Wide_String);
287 Set_Etype (Last_Entity (Standard_Op_Concatw), Standard_Wide_String);
288
289 Set_Etype (First_Entity (Standard_Op_Concatww),
290 Standard_Wide_Wide_String);
291
292 Set_Etype (Last_Entity (Standard_Op_Concatww),
293 Standard_Wide_Wide_String);
294 end Create_Operators;
295
296 ---------------------
297 -- Create_Standard --
298 ---------------------
299
300 -- The tree for the package Standard is prefixed to all compilations.
301 -- Several entities required by semantic analysis are denoted by global
302 -- variables that are initialized to point to the corresponding
303 -- occurrences in STANDARD. The visible entities of STANDARD are
304 -- created here. The private entities defined in STANDARD are created
305 -- by Initialize_Standard in the semantics module.
306
307 procedure Create_Standard is
308 Decl_S : constant List_Id := New_List;
309 -- List of declarations in Standard
310
311 Decl_A : constant List_Id := New_List;
312 -- List of declarations in ASCII
313
314 Decl : Node_Id;
315 Pspec : Node_Id;
316 Tdef_Node : Node_Id;
317 Ident_Node : Node_Id;
318 Ccode : Char_Code;
319 E_Id : Entity_Id;
320 R_Node : Node_Id;
321 B_Node : Node_Id;
322
323 procedure Build_Exception (S : Standard_Entity_Type);
324 -- Procedure to declare given entity as an exception
325
326 procedure Pack_String_Type (String_Type : Entity_Id);
327 -- Generate proper tree for pragma Pack that applies to given type, and
328 -- mark type as having the pragma.
329
330 ---------------------
331 -- Build_Exception --
332 ---------------------
333
334 procedure Build_Exception (S : Standard_Entity_Type) is
335 begin
336 Set_Ekind (Standard_Entity (S), E_Exception);
337 Set_Etype (Standard_Entity (S), Standard_Exception_Type);
338 Set_Exception_Code (Standard_Entity (S), Uint_0);
339 Set_Is_Public (Standard_Entity (S), True);
340
341 Decl :=
342 Make_Exception_Declaration (Stloc,
343 Defining_Identifier => Standard_Entity (S));
344 Append (Decl, Decl_S);
345 end Build_Exception;
346
347 ----------------------
348 -- Pack_String_Type --
349 ----------------------
350
351 procedure Pack_String_Type (String_Type : Entity_Id) is
352 Prag : constant Node_Id :=
353 Make_Pragma (Stloc,
354 Chars => Name_Pack,
355 Pragma_Argument_Associations =>
356 New_List (
357 Make_Pragma_Argument_Association (Stloc,
358 Expression =>
359 New_Occurrence_Of (String_Type, Stloc))));
360 begin
361 Append (Prag, Decl_S);
362 Record_Rep_Item (String_Type, Prag);
363 Set_Has_Pragma_Pack (String_Type, True);
364 end Pack_String_Type;
365
366 -- Start of processing for Create_Standard
367
368 begin
369 -- Initialize scanner for internal scans of literals
370
371 Scn.Initialize_Scanner (No_Unit, Internal_Source_File);
372
373 -- First step is to create defining identifiers for each entity
374
375 for S in Standard_Entity_Type loop
376 declare
377 S_Name : constant String := Standard_Entity_Type'Image (S);
378 -- Name of entity (note we skip S_ at the start)
379
380 Ident_Node : Node_Id;
381 -- Defining identifier node
382
383 begin
384 Ident_Node := New_Standard_Entity;
385 Make_Name (Ident_Node, S_Name (3 .. S_Name'Length));
386 Standard_Entity (S) := Ident_Node;
387 end;
388 end loop;
389
390 -- Create package declaration node for package Standard
391
392 Standard_Package_Node := New_Node (N_Package_Declaration, Stloc);
393
394 Pspec := New_Node (N_Package_Specification, Stloc);
395 Set_Specification (Standard_Package_Node, Pspec);
396
397 Set_Defining_Unit_Name (Pspec, Standard_Standard);
398 Set_Visible_Declarations (Pspec, Decl_S);
399
400 Set_Ekind (Standard_Standard, E_Package);
401 Set_Is_Pure (Standard_Standard);
402 Set_Is_Compilation_Unit (Standard_Standard);
403
404 -- Create type/subtype declaration nodes for standard types
405
406 for S in S_Types loop
407
408 -- Subtype declaration case
409
410 if S = S_Natural or else S = S_Positive then
411 Decl := New_Node (N_Subtype_Declaration, Stloc);
412 Set_Subtype_Indication (Decl,
413 New_Occurrence_Of (Standard_Integer, Stloc));
414
415 -- Full type declaration case
416
417 else
418 Decl := New_Node (N_Full_Type_Declaration, Stloc);
419 end if;
420
421 Set_Is_Frozen (Standard_Entity (S));
422 Set_Is_Public (Standard_Entity (S));
423 Set_Defining_Identifier (Decl, Standard_Entity (S));
424 Append (Decl, Decl_S);
425 end loop;
426
427 -- Create type definition node for type Boolean. The Size is set to
428 -- 1 as required by Ada 95 and current ARG interpretations for Ada/83.
429
430 -- Note: Object_Size of Boolean is 8. This means that we do NOT in
431 -- general know that Boolean variables have valid values, so we do
432 -- not set the Is_Known_Valid flag.
433
434 Tdef_Node := New_Node (N_Enumeration_Type_Definition, Stloc);
435 Set_Literals (Tdef_Node, New_List);
436 Append (Standard_False, Literals (Tdef_Node));
437 Append (Standard_True, Literals (Tdef_Node));
438 Set_Type_Definition (Parent (Standard_Boolean), Tdef_Node);
439
440 Set_Ekind (Standard_Boolean, E_Enumeration_Type);
441 Set_First_Literal (Standard_Boolean, Standard_False);
442 Set_Etype (Standard_Boolean, Standard_Boolean);
443 Init_Esize (Standard_Boolean, Standard_Character_Size);
444 Init_RM_Size (Standard_Boolean, 1);
445 Set_Elem_Alignment (Standard_Boolean);
446
447 Set_Is_Unsigned_Type (Standard_Boolean);
448 Set_Size_Known_At_Compile_Time (Standard_Boolean);
449 Set_Has_Pragma_Ordered (Standard_Boolean);
450
451 Set_Ekind (Standard_True, E_Enumeration_Literal);
452 Set_Etype (Standard_True, Standard_Boolean);
453 Set_Enumeration_Pos (Standard_True, Uint_1);
454 Set_Enumeration_Rep (Standard_True, Uint_1);
455 Set_Is_Known_Valid (Standard_True, True);
456
457 Set_Ekind (Standard_False, E_Enumeration_Literal);
458 Set_Etype (Standard_False, Standard_Boolean);
459 Set_Enumeration_Pos (Standard_False, Uint_0);
460 Set_Enumeration_Rep (Standard_False, Uint_0);
461 Set_Is_Known_Valid (Standard_False, True);
462
463 -- For the bounds of Boolean, we create a range node corresponding to
464
465 -- range False .. True
466
467 -- where the occurrences of the literals must point to the
468 -- corresponding definition.
469
470 R_Node := New_Node (N_Range, Stloc);
471 B_Node := New_Node (N_Identifier, Stloc);
472 Set_Chars (B_Node, Chars (Standard_False));
473 Set_Entity (B_Node, Standard_False);
474 Set_Etype (B_Node, Standard_Boolean);
475 Set_Is_Static_Expression (B_Node);
476 Set_Low_Bound (R_Node, B_Node);
477
478 B_Node := New_Node (N_Identifier, Stloc);
479 Set_Chars (B_Node, Chars (Standard_True));
480 Set_Entity (B_Node, Standard_True);
481 Set_Etype (B_Node, Standard_Boolean);
482 Set_Is_Static_Expression (B_Node);
483 Set_High_Bound (R_Node, B_Node);
484
485 Set_Scalar_Range (Standard_Boolean, R_Node);
486 Set_Etype (R_Node, Standard_Boolean);
487 Set_Parent (R_Node, Standard_Boolean);
488
489 -- Record entity identifiers for boolean literals in the
490 -- Boolean_Literals array, for easy reference during expansion.
491
492 Boolean_Literals := (False => Standard_False, True => Standard_True);
493
494 -- Create type definition nodes for predefined integer types
495
496 Build_Signed_Integer_Type
497 (Standard_Short_Short_Integer, Standard_Short_Short_Integer_Size);
498
499 Build_Signed_Integer_Type
500 (Standard_Short_Integer, Standard_Short_Integer_Size);
501
502 Build_Signed_Integer_Type
503 (Standard_Integer, Standard_Integer_Size);
504
505 declare
506 LIS : Nat;
507 begin
508 if Debug_Flag_M then
509 LIS := 64;
510 else
511 LIS := Standard_Long_Integer_Size;
512 end if;
513
514 Build_Signed_Integer_Type (Standard_Long_Integer, LIS);
515 end;
516
517 Build_Signed_Integer_Type
518 (Standard_Long_Long_Integer, Standard_Long_Long_Integer_Size);
519
520 Create_Unconstrained_Base_Type
521 (Standard_Short_Short_Integer, E_Signed_Integer_Subtype);
522
523 Create_Unconstrained_Base_Type
524 (Standard_Short_Integer, E_Signed_Integer_Subtype);
525
526 Create_Unconstrained_Base_Type
527 (Standard_Integer, E_Signed_Integer_Subtype);
528
529 Create_Unconstrained_Base_Type
530 (Standard_Long_Integer, E_Signed_Integer_Subtype);
531
532 Create_Unconstrained_Base_Type
533 (Standard_Long_Long_Integer, E_Signed_Integer_Subtype);
534
535 -- Create type definition nodes for predefined float types
536
537 Build_Float_Type
538 (Standard_Short_Float,
539 Standard_Short_Float_Size,
540 Standard_Short_Float_Digits);
541
542 Build_Float_Type
543 (Standard_Float,
544 Standard_Float_Size,
545 Standard_Float_Digits);
546
547 Build_Float_Type
548 (Standard_Long_Float,
549 Standard_Long_Float_Size,
550 Standard_Long_Float_Digits);
551
552 Build_Float_Type
553 (Standard_Long_Long_Float,
554 Standard_Long_Long_Float_Size,
555 Standard_Long_Long_Float_Digits);
556
557 -- Create type definition node for type Character. Note that we do not
558 -- set the Literals field, since type Character is handled with special
559 -- routine that do not need a literal list.
560
561 Tdef_Node := New_Node (N_Enumeration_Type_Definition, Stloc);
562 Set_Type_Definition (Parent (Standard_Character), Tdef_Node);
563
564 Set_Ekind (Standard_Character, E_Enumeration_Type);
565 Set_Etype (Standard_Character, Standard_Character);
566 Init_Esize (Standard_Character, Standard_Character_Size);
567 Init_RM_Size (Standard_Character, 8);
568 Set_Elem_Alignment (Standard_Character);
569
570 Set_Has_Pragma_Ordered (Standard_Character);
571 Set_Is_Unsigned_Type (Standard_Character);
572 Set_Is_Character_Type (Standard_Character);
573 Set_Is_Known_Valid (Standard_Character);
574 Set_Size_Known_At_Compile_Time (Standard_Character);
575
576 -- Create the bounds for type Character
577
578 R_Node := New_Node (N_Range, Stloc);
579
580 -- Low bound for type Character (Standard.Nul)
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, Uint_0);
586 Set_Entity (B_Node, Empty);
587 Set_Etype (B_Node, Standard_Character);
588 Set_Low_Bound (R_Node, B_Node);
589
590 -- High bound for type 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, UI_From_Int (16#FF#));
596 Set_Entity (B_Node, Empty);
597 Set_Etype (B_Node, Standard_Character);
598 Set_High_Bound (R_Node, B_Node);
599
600 Set_Scalar_Range (Standard_Character, R_Node);
601 Set_Etype (R_Node, Standard_Character);
602 Set_Parent (R_Node, Standard_Character);
603
604 -- Create type definition for type Wide_Character. Note that we do not
605 -- set the Literals field, since type Wide_Character is handled with
606 -- special routines that do not need a literal list.
607
608 Tdef_Node := New_Node (N_Enumeration_Type_Definition, Stloc);
609 Set_Type_Definition (Parent (Standard_Wide_Character), Tdef_Node);
610
611 Set_Ekind (Standard_Wide_Character, E_Enumeration_Type);
612 Set_Etype (Standard_Wide_Character, Standard_Wide_Character);
613 Init_Size (Standard_Wide_Character, Standard_Wide_Character_Size);
614
615 Set_Elem_Alignment (Standard_Wide_Character);
616 Set_Has_Pragma_Ordered (Standard_Wide_Character);
617 Set_Is_Unsigned_Type (Standard_Wide_Character);
618 Set_Is_Character_Type (Standard_Wide_Character);
619 Set_Is_Known_Valid (Standard_Wide_Character);
620 Set_Size_Known_At_Compile_Time (Standard_Wide_Character);
621
622 -- Create the bounds for type Wide_Character
623
624 R_Node := New_Node (N_Range, Stloc);
625
626 -- Low bound for type Wide_Character
627
628 B_Node := New_Node (N_Character_Literal, Stloc);
629 Set_Is_Static_Expression (B_Node);
630 Set_Chars (B_Node, No_Name); -- ???
631 Set_Char_Literal_Value (B_Node, Uint_0);
632 Set_Entity (B_Node, Empty);
633 Set_Etype (B_Node, Standard_Wide_Character);
634 Set_Low_Bound (R_Node, B_Node);
635
636 -- High bound for type Wide_Character
637
638 B_Node := New_Node (N_Character_Literal, Stloc);
639 Set_Is_Static_Expression (B_Node);
640 Set_Chars (B_Node, No_Name); -- ???
641 Set_Char_Literal_Value (B_Node, UI_From_Int (16#FFFF#));
642 Set_Entity (B_Node, Empty);
643 Set_Etype (B_Node, Standard_Wide_Character);
644 Set_High_Bound (R_Node, B_Node);
645
646 Set_Scalar_Range (Standard_Wide_Character, R_Node);
647 Set_Etype (R_Node, Standard_Wide_Character);
648 Set_Parent (R_Node, Standard_Wide_Character);
649
650 -- Create type definition for type Wide_Wide_Character. Note that we
651 -- do not set the Literals field, since type Wide_Wide_Character is
652 -- handled with special routines that do not need a literal list.
653
654 Tdef_Node := New_Node (N_Enumeration_Type_Definition, Stloc);
655 Set_Type_Definition (Parent (Standard_Wide_Wide_Character), Tdef_Node);
656
657 Set_Ekind (Standard_Wide_Wide_Character, E_Enumeration_Type);
658 Set_Etype (Standard_Wide_Wide_Character,
659 Standard_Wide_Wide_Character);
660 Init_Size (Standard_Wide_Wide_Character,
661 Standard_Wide_Wide_Character_Size);
662
663 Set_Elem_Alignment (Standard_Wide_Wide_Character);
664 Set_Has_Pragma_Ordered (Standard_Wide_Wide_Character);
665 Set_Is_Unsigned_Type (Standard_Wide_Wide_Character);
666 Set_Is_Character_Type (Standard_Wide_Wide_Character);
667 Set_Is_Known_Valid (Standard_Wide_Wide_Character);
668 Set_Size_Known_At_Compile_Time (Standard_Wide_Wide_Character);
669 Set_Is_Ada_2005_Only (Standard_Wide_Wide_Character);
670
671 -- Create the bounds for type Wide_Wide_Character
672
673 R_Node := New_Node (N_Range, Stloc);
674
675 -- Low bound for type Wide_Wide_Character
676
677 B_Node := New_Node (N_Character_Literal, Stloc);
678 Set_Is_Static_Expression (B_Node);
679 Set_Chars (B_Node, No_Name); -- ???
680 Set_Char_Literal_Value (B_Node, Uint_0);
681 Set_Entity (B_Node, Empty);
682 Set_Etype (B_Node, Standard_Wide_Wide_Character);
683 Set_Low_Bound (R_Node, B_Node);
684
685 -- High bound for type Wide_Wide_Character
686
687 B_Node := New_Node (N_Character_Literal, Stloc);
688 Set_Is_Static_Expression (B_Node);
689 Set_Chars (B_Node, No_Name); -- ???
690 Set_Char_Literal_Value (B_Node, UI_From_Int (16#7FFF_FFFF#));
691 Set_Entity (B_Node, Empty);
692 Set_Etype (B_Node, Standard_Wide_Wide_Character);
693 Set_High_Bound (R_Node, B_Node);
694
695 Set_Scalar_Range (Standard_Wide_Wide_Character, R_Node);
696 Set_Etype (R_Node, Standard_Wide_Wide_Character);
697 Set_Parent (R_Node, Standard_Wide_Wide_Character);
698
699 -- Create type definition node for type String
700
701 Tdef_Node := New_Node (N_Unconstrained_Array_Definition, Stloc);
702
703 declare
704 CompDef_Node : Node_Id;
705 begin
706 CompDef_Node := New_Node (N_Component_Definition, Stloc);
707 Set_Aliased_Present (CompDef_Node, False);
708 Set_Access_Definition (CompDef_Node, Empty);
709 Set_Subtype_Indication (CompDef_Node, Identifier_For (S_Character));
710 Set_Component_Definition (Tdef_Node, CompDef_Node);
711 end;
712
713 Set_Subtype_Marks (Tdef_Node, New_List);
714 Append (Identifier_For (S_Positive), Subtype_Marks (Tdef_Node));
715 Set_Type_Definition (Parent (Standard_String), Tdef_Node);
716
717 Set_Ekind (Standard_String, E_String_Type);
718 Set_Etype (Standard_String, Standard_String);
719 Set_Component_Type (Standard_String, Standard_Character);
720 Set_Component_Size (Standard_String, Uint_8);
721 Init_Size_Align (Standard_String);
722 Set_Alignment (Standard_String, Uint_1);
723 Pack_String_Type (Standard_String);
724
725 -- On targets where a storage unit is larger than a byte (such as AAMP),
726 -- pragma Pack has a real effect on the representation of type String,
727 -- and the type must be marked as having a nonstandard representation.
728
729 if System_Storage_Unit > Uint_8 then
730 Set_Has_Non_Standard_Rep (Standard_String);
731 Set_Has_Pragma_Pack (Standard_String);
732 end if;
733
734 -- Set index type of String
735
736 E_Id := First
737 (Subtype_Marks (Type_Definition (Parent (Standard_String))));
738 Set_First_Index (Standard_String, E_Id);
739 Set_Entity (E_Id, Standard_Positive);
740 Set_Etype (E_Id, Standard_Positive);
741
742 -- Create type definition node for type Wide_String
743
744 Tdef_Node := New_Node (N_Unconstrained_Array_Definition, Stloc);
745
746 declare
747 CompDef_Node : Node_Id;
748 begin
749 CompDef_Node := New_Node (N_Component_Definition, Stloc);
750 Set_Aliased_Present (CompDef_Node, False);
751 Set_Access_Definition (CompDef_Node, Empty);
752 Set_Subtype_Indication (CompDef_Node,
753 Identifier_For (S_Wide_Character));
754 Set_Component_Definition (Tdef_Node, CompDef_Node);
755 end;
756
757 Set_Subtype_Marks (Tdef_Node, New_List);
758 Append (Identifier_For (S_Positive), Subtype_Marks (Tdef_Node));
759 Set_Type_Definition (Parent (Standard_Wide_String), Tdef_Node);
760
761 Set_Ekind (Standard_Wide_String, E_String_Type);
762 Set_Etype (Standard_Wide_String, Standard_Wide_String);
763 Set_Component_Type (Standard_Wide_String, Standard_Wide_Character);
764 Set_Component_Size (Standard_Wide_String, Uint_16);
765 Init_Size_Align (Standard_Wide_String);
766 Pack_String_Type (Standard_Wide_String);
767
768 -- Set index type of Wide_String
769
770 E_Id := First
771 (Subtype_Marks (Type_Definition (Parent (Standard_Wide_String))));
772 Set_First_Index (Standard_Wide_String, E_Id);
773 Set_Entity (E_Id, Standard_Positive);
774 Set_Etype (E_Id, Standard_Positive);
775
776 -- Create type definition node for type Wide_Wide_String
777
778 Tdef_Node := New_Node (N_Unconstrained_Array_Definition, Stloc);
779
780 declare
781 CompDef_Node : Node_Id;
782 begin
783 CompDef_Node := New_Node (N_Component_Definition, Stloc);
784 Set_Aliased_Present (CompDef_Node, False);
785 Set_Access_Definition (CompDef_Node, Empty);
786 Set_Subtype_Indication (CompDef_Node,
787 Identifier_For (S_Wide_Wide_Character));
788 Set_Component_Definition (Tdef_Node, CompDef_Node);
789 end;
790
791 Set_Subtype_Marks (Tdef_Node, New_List);
792 Append (Identifier_For (S_Positive), Subtype_Marks (Tdef_Node));
793 Set_Type_Definition (Parent (Standard_Wide_Wide_String), Tdef_Node);
794
795 Set_Ekind (Standard_Wide_Wide_String, E_String_Type);
796 Set_Etype (Standard_Wide_Wide_String,
797 Standard_Wide_Wide_String);
798 Set_Component_Type (Standard_Wide_Wide_String,
799 Standard_Wide_Wide_Character);
800 Set_Component_Size (Standard_Wide_Wide_String, Uint_32);
801 Init_Size_Align (Standard_Wide_Wide_String);
802 Set_Is_Ada_2005_Only (Standard_Wide_Wide_String);
803 Pack_String_Type (Standard_Wide_Wide_String);
804
805 -- Set index type of Wide_Wide_String
806
807 E_Id := First
808 (Subtype_Marks (Type_Definition (Parent (Standard_Wide_Wide_String))));
809 Set_First_Index (Standard_Wide_Wide_String, E_Id);
810 Set_Entity (E_Id, Standard_Positive);
811 Set_Etype (E_Id, Standard_Positive);
812
813 -- Setup entity for Naturalend Create_Standard;
814
815 Set_Ekind (Standard_Natural, E_Signed_Integer_Subtype);
816 Set_Etype (Standard_Natural, Base_Type (Standard_Integer));
817 Init_Esize (Standard_Natural, Standard_Integer_Size);
818 Init_RM_Size (Standard_Natural, Standard_Integer_Size - 1);
819 Set_Elem_Alignment (Standard_Natural);
820 Set_Size_Known_At_Compile_Time
821 (Standard_Natural);
822 Set_Integer_Bounds (Standard_Natural,
823 Typ => Base_Type (Standard_Integer),
824 Lb => Uint_0,
825 Hb => Intval (High_Bound (Scalar_Range (Standard_Integer))));
826 Set_Is_Constrained (Standard_Natural);
827
828 -- Setup entity for Positive
829
830 Set_Ekind (Standard_Positive, E_Signed_Integer_Subtype);
831 Set_Etype (Standard_Positive, Base_Type (Standard_Integer));
832 Init_Esize (Standard_Positive, Standard_Integer_Size);
833 Init_RM_Size (Standard_Positive, Standard_Integer_Size - 1);
834 Set_Elem_Alignment (Standard_Positive);
835
836 Set_Size_Known_At_Compile_Time (Standard_Positive);
837
838 Set_Integer_Bounds (Standard_Positive,
839 Typ => Base_Type (Standard_Integer),
840 Lb => Uint_1,
841 Hb => Intval (High_Bound (Scalar_Range (Standard_Integer))));
842 Set_Is_Constrained (Standard_Positive);
843
844 -- Create declaration for package ASCII
845
846 Decl := New_Node (N_Package_Declaration, Stloc);
847 Append (Decl, Decl_S);
848
849 Pspec := New_Node (N_Package_Specification, Stloc);
850 Set_Specification (Decl, Pspec);
851
852 Set_Defining_Unit_Name (Pspec, Standard_Entity (S_ASCII));
853 Set_Ekind (Standard_Entity (S_ASCII), E_Package);
854 Set_Visible_Declarations (Pspec, Decl_A);
855
856 -- Create control character definitions in package ASCII. Note that
857 -- the character literal entries created here correspond to literal
858 -- values that are impossible in the source, but can be represented
859 -- internally with no difficulties.
860
861 Ccode := 16#00#;
862
863 for S in S_ASCII_Names loop
864 Decl := New_Node (N_Object_Declaration, Staloc);
865 Set_Constant_Present (Decl, True);
866
867 declare
868 A_Char : constant Entity_Id := Standard_Entity (S);
869 Expr_Decl : Node_Id;
870
871 begin
872 Set_Sloc (A_Char, Staloc);
873 Set_Ekind (A_Char, E_Constant);
874 Set_Never_Set_In_Source (A_Char, True);
875 Set_Is_True_Constant (A_Char, True);
876 Set_Etype (A_Char, Standard_Character);
877 Set_Scope (A_Char, Standard_Entity (S_ASCII));
878 Set_Is_Immediately_Visible (A_Char, False);
879 Set_Is_Public (A_Char, True);
880 Set_Is_Known_Valid (A_Char, True);
881
882 Append_Entity (A_Char, Standard_Entity (S_ASCII));
883 Set_Defining_Identifier (Decl, A_Char);
884
885 Set_Object_Definition (Decl, Identifier_For (S_Character));
886 Expr_Decl := New_Node (N_Character_Literal, Staloc);
887 Set_Expression (Decl, Expr_Decl);
888
889 Set_Is_Static_Expression (Expr_Decl);
890 Set_Chars (Expr_Decl, No_Name);
891 Set_Etype (Expr_Decl, Standard_Character);
892 Set_Char_Literal_Value (Expr_Decl, UI_From_Int (Int (Ccode)));
893 end;
894
895 Append (Decl, Decl_A);
896
897 -- Increment character code, dealing with non-contiguities
898
899 Ccode := Ccode + 1;
900
901 if Ccode = 16#20# then
902 Ccode := 16#21#;
903 elsif Ccode = 16#27# then
904 Ccode := 16#3A#;
905 elsif Ccode = 16#3C# then
906 Ccode := 16#3F#;
907 elsif Ccode = 16#41# then
908 Ccode := 16#5B#;
909 end if;
910 end loop;
911
912 -- Create semantic phase entities
913
914 Standard_Void_Type := New_Standard_Entity;
915 Set_Ekind (Standard_Void_Type, E_Void);
916 Set_Etype (Standard_Void_Type, Standard_Void_Type);
917 Set_Scope (Standard_Void_Type, Standard_Standard);
918 Make_Name (Standard_Void_Type, "_void_type");
919
920 -- The type field of packages is set to void
921
922 Set_Etype (Standard_Standard, Standard_Void_Type);
923 Set_Etype (Standard_ASCII, Standard_Void_Type);
924
925 -- Standard_A_String is actually used in generated code, so it has a
926 -- type name that is reasonable, but does not overlap any Ada name.
927
928 Standard_A_String := New_Standard_Entity;
929 Set_Ekind (Standard_A_String, E_Access_Type);
930 Set_Scope (Standard_A_String, Standard_Standard);
931 Set_Etype (Standard_A_String, Standard_A_String);
932
933 if Debug_Flag_6 then
934 Init_Size (Standard_A_String, System_Address_Size);
935 else
936 Init_Size (Standard_A_String, System_Address_Size * 2);
937 end if;
938
939 Init_Alignment (Standard_A_String);
940
941 Set_Directly_Designated_Type
942 (Standard_A_String, Standard_String);
943 Make_Name (Standard_A_String, "access_string");
944
945 Standard_A_Char := New_Standard_Entity;
946 Set_Ekind (Standard_A_Char, E_Access_Type);
947 Set_Scope (Standard_A_Char, Standard_Standard);
948 Set_Etype (Standard_A_Char, Standard_A_String);
949 Init_Size (Standard_A_Char, System_Address_Size);
950 Set_Elem_Alignment (Standard_A_Char);
951
952 Set_Directly_Designated_Type (Standard_A_Char, Standard_Character);
953 Make_Name (Standard_A_Char, "access_character");
954
955 -- Standard_Debug_Renaming_Type is used for the special objects created
956 -- to encode the names occurring in renaming declarations for use by the
957 -- debugger (see exp_dbug.adb). The type is a zero-sized subtype of
958 -- Standard.Integer.
959
960 Standard_Debug_Renaming_Type := New_Standard_Entity;
961
962 Set_Ekind (Standard_Debug_Renaming_Type, E_Signed_Integer_Subtype);
963 Set_Scope (Standard_Debug_Renaming_Type, Standard_Standard);
964 Set_Etype (Standard_Debug_Renaming_Type, Base_Type (Standard_Integer));
965 Init_Esize (Standard_Debug_Renaming_Type, 0);
966 Init_RM_Size (Standard_Debug_Renaming_Type, 0);
967 Set_Size_Known_At_Compile_Time (Standard_Debug_Renaming_Type);
968 Set_Integer_Bounds (Standard_Debug_Renaming_Type,
969 Typ => Base_Type (Standard_Debug_Renaming_Type),
970 Lb => Uint_1,
971 Hb => Uint_0);
972 Set_Is_Constrained (Standard_Debug_Renaming_Type);
973 Set_Has_Size_Clause (Standard_Debug_Renaming_Type);
974
975 Make_Name (Standard_Debug_Renaming_Type, "_renaming_type");
976
977 -- Note on type names. The type names for the following special types
978 -- are constructed so that they will look reasonable should they ever
979 -- appear in error messages etc, although in practice the use of the
980 -- special insertion character } for types results in special handling
981 -- of these type names in any case. The blanks in these names would
982 -- trouble in Gigi, but that's OK here, since none of these types
983 -- should ever get through to Gigi! Attributes of these types are
984 -- filled out to minimize problems with cascaded errors (for example,
985 -- Any_Integer is given reasonable and consistent type and size values)
986
987 Any_Type := New_Standard_Entity;
988 Decl := New_Node (N_Full_Type_Declaration, Stloc);
989 Set_Defining_Identifier (Decl, Any_Type);
990 Set_Scope (Any_Type, Standard_Standard);
991 Build_Signed_Integer_Type (Any_Type, Standard_Integer_Size);
992 Make_Name (Any_Type, "any type");
993
994 Any_Id := New_Standard_Entity;
995 Set_Ekind (Any_Id, E_Variable);
996 Set_Scope (Any_Id, Standard_Standard);
997 Set_Etype (Any_Id, Any_Type);
998 Init_Esize (Any_Id);
999 Init_Alignment (Any_Id);
1000 Make_Name (Any_Id, "any id");
1001
1002 Any_Access := New_Standard_Entity;
1003 Set_Ekind (Any_Access, E_Access_Type);
1004 Set_Scope (Any_Access, Standard_Standard);
1005 Set_Etype (Any_Access, Any_Access);
1006 Init_Size (Any_Access, System_Address_Size);
1007 Set_Elem_Alignment (Any_Access);
1008 Make_Name (Any_Access, "an access type");
1009
1010 Any_Character := New_Standard_Entity;
1011 Set_Ekind (Any_Character, E_Enumeration_Type);
1012 Set_Scope (Any_Character, Standard_Standard);
1013 Set_Etype (Any_Character, Any_Character);
1014 Set_Is_Unsigned_Type (Any_Character);
1015 Set_Is_Character_Type (Any_Character);
1016 Init_Esize (Any_Character, Standard_Character_Size);
1017 Init_RM_Size (Any_Character, 8);
1018 Set_Elem_Alignment (Any_Character);
1019 Set_Scalar_Range (Any_Character, Scalar_Range (Standard_Character));
1020 Make_Name (Any_Character, "a character type");
1021
1022 Any_Array := New_Standard_Entity;
1023 Set_Ekind (Any_Array, E_String_Type);
1024 Set_Scope (Any_Array, Standard_Standard);
1025 Set_Etype (Any_Array, Any_Array);
1026 Set_Component_Type (Any_Array, Any_Character);
1027 Init_Size_Align (Any_Array);
1028 Make_Name (Any_Array, "an array type");
1029
1030 Any_Boolean := New_Standard_Entity;
1031 Set_Ekind (Any_Boolean, E_Enumeration_Type);
1032 Set_Scope (Any_Boolean, Standard_Standard);
1033 Set_Etype (Any_Boolean, Standard_Boolean);
1034 Init_Esize (Any_Boolean, Standard_Character_Size);
1035 Init_RM_Size (Any_Boolean, 1);
1036 Set_Elem_Alignment (Any_Boolean);
1037 Set_Is_Unsigned_Type (Any_Boolean);
1038 Set_Scalar_Range (Any_Boolean, Scalar_Range (Standard_Boolean));
1039 Make_Name (Any_Boolean, "a boolean type");
1040
1041 Any_Composite := New_Standard_Entity;
1042 Set_Ekind (Any_Composite, E_Array_Type);
1043 Set_Scope (Any_Composite, Standard_Standard);
1044 Set_Etype (Any_Composite, Any_Composite);
1045 Set_Component_Size (Any_Composite, Uint_0);
1046 Set_Component_Type (Any_Composite, Standard_Integer);
1047 Init_Size_Align (Any_Composite);
1048 Make_Name (Any_Composite, "a composite type");
1049
1050 Any_Discrete := New_Standard_Entity;
1051 Set_Ekind (Any_Discrete, E_Signed_Integer_Type);
1052 Set_Scope (Any_Discrete, Standard_Standard);
1053 Set_Etype (Any_Discrete, Any_Discrete);
1054 Init_Size (Any_Discrete, Standard_Integer_Size);
1055 Set_Elem_Alignment (Any_Discrete);
1056 Make_Name (Any_Discrete, "a discrete type");
1057
1058 Any_Fixed := New_Standard_Entity;
1059 Set_Ekind (Any_Fixed, E_Ordinary_Fixed_Point_Type);
1060 Set_Scope (Any_Fixed, Standard_Standard);
1061 Set_Etype (Any_Fixed, Any_Fixed);
1062 Init_Size (Any_Fixed, Standard_Integer_Size);
1063 Set_Elem_Alignment (Any_Fixed);
1064 Make_Name (Any_Fixed, "a fixed-point type");
1065
1066 Any_Integer := New_Standard_Entity;
1067 Set_Ekind (Any_Integer, E_Signed_Integer_Type);
1068 Set_Scope (Any_Integer, Standard_Standard);
1069 Set_Etype (Any_Integer, Standard_Long_Long_Integer);
1070 Init_Size (Any_Integer, Standard_Long_Long_Integer_Size);
1071 Set_Elem_Alignment (Any_Integer);
1072
1073 Set_Integer_Bounds
1074 (Any_Integer,
1075 Typ => Base_Type (Standard_Integer),
1076 Lb => Uint_0,
1077 Hb => Intval (High_Bound (Scalar_Range (Standard_Integer))));
1078 Make_Name (Any_Integer, "an integer type");
1079
1080 Any_Modular := New_Standard_Entity;
1081 Set_Ekind (Any_Modular, E_Modular_Integer_Type);
1082 Set_Scope (Any_Modular, Standard_Standard);
1083 Set_Etype (Any_Modular, Standard_Long_Long_Integer);
1084 Init_Size (Any_Modular, Standard_Long_Long_Integer_Size);
1085 Set_Elem_Alignment (Any_Modular);
1086 Set_Is_Unsigned_Type (Any_Modular);
1087 Make_Name (Any_Modular, "a modular type");
1088
1089 Any_Numeric := New_Standard_Entity;
1090 Set_Ekind (Any_Numeric, E_Signed_Integer_Type);
1091 Set_Scope (Any_Numeric, Standard_Standard);
1092 Set_Etype (Any_Numeric, Standard_Long_Long_Integer);
1093 Init_Size (Any_Numeric, Standard_Long_Long_Integer_Size);
1094 Set_Elem_Alignment (Any_Numeric);
1095 Make_Name (Any_Numeric, "a numeric type");
1096
1097 Any_Real := New_Standard_Entity;
1098 Set_Ekind (Any_Real, E_Floating_Point_Type);
1099 Set_Scope (Any_Real, Standard_Standard);
1100 Set_Etype (Any_Real, Standard_Long_Long_Float);
1101 Init_Size (Any_Real, Standard_Long_Long_Float_Size);
1102 Set_Elem_Alignment (Any_Real);
1103 Make_Name (Any_Real, "a real type");
1104
1105 Any_Scalar := New_Standard_Entity;
1106 Set_Ekind (Any_Scalar, E_Signed_Integer_Type);
1107 Set_Scope (Any_Scalar, Standard_Standard);
1108 Set_Etype (Any_Scalar, Any_Scalar);
1109 Init_Size (Any_Scalar, Standard_Integer_Size);
1110 Set_Elem_Alignment (Any_Scalar);
1111 Make_Name (Any_Scalar, "a scalar type");
1112
1113 Any_String := New_Standard_Entity;
1114 Set_Ekind (Any_String, E_String_Type);
1115 Set_Scope (Any_String, Standard_Standard);
1116 Set_Etype (Any_String, Any_String);
1117 Set_Component_Type (Any_String, Any_Character);
1118 Init_Size_Align (Any_String);
1119 Make_Name (Any_String, "a string type");
1120
1121 declare
1122 Index : Node_Id;
1123
1124 begin
1125 Index :=
1126 Make_Range (Stloc,
1127 Low_Bound => Make_Integer (Uint_0),
1128 High_Bound => Make_Integer (Uint_2 ** Standard_Integer_Size));
1129 Set_Etype (Index, Standard_Integer);
1130 Set_First_Index (Any_String, Index);
1131 end;
1132
1133 Standard_Integer_8 := New_Standard_Entity;
1134 Decl := New_Node (N_Full_Type_Declaration, Stloc);
1135 Set_Defining_Identifier (Decl, Standard_Integer_8);
1136 Make_Name (Standard_Integer_8, "integer_8");
1137 Set_Scope (Standard_Integer_8, Standard_Standard);
1138 Build_Signed_Integer_Type (Standard_Integer_8, 8);
1139
1140 Standard_Integer_16 := New_Standard_Entity;
1141 Decl := New_Node (N_Full_Type_Declaration, Stloc);
1142 Set_Defining_Identifier (Decl, Standard_Integer_16);
1143 Make_Name (Standard_Integer_16, "integer_16");
1144 Set_Scope (Standard_Integer_16, Standard_Standard);
1145 Build_Signed_Integer_Type (Standard_Integer_16, 16);
1146
1147 Standard_Integer_32 := New_Standard_Entity;
1148 Decl := New_Node (N_Full_Type_Declaration, Stloc);
1149 Set_Defining_Identifier (Decl, Standard_Integer_32);
1150 Make_Name (Standard_Integer_32, "integer_32");
1151 Set_Scope (Standard_Integer_32, Standard_Standard);
1152 Build_Signed_Integer_Type (Standard_Integer_32, 32);
1153
1154 Standard_Integer_64 := New_Standard_Entity;
1155 Decl := New_Node (N_Full_Type_Declaration, Stloc);
1156 Set_Defining_Identifier (Decl, Standard_Integer_64);
1157 Make_Name (Standard_Integer_64, "integer_64");
1158 Set_Scope (Standard_Integer_64, Standard_Standard);
1159 Build_Signed_Integer_Type (Standard_Integer_64, 64);
1160
1161 Standard_Unsigned := New_Standard_Entity;
1162 Decl := New_Node (N_Full_Type_Declaration, Stloc);
1163 Set_Defining_Identifier (Decl, Standard_Unsigned);
1164 Make_Name (Standard_Unsigned, "unsigned");
1165
1166 Set_Ekind (Standard_Unsigned, E_Modular_Integer_Type);
1167 Set_Scope (Standard_Unsigned, Standard_Standard);
1168 Set_Etype (Standard_Unsigned, Standard_Unsigned);
1169 Init_Size (Standard_Unsigned, Standard_Integer_Size);
1170 Set_Elem_Alignment (Standard_Unsigned);
1171 Set_Modulus (Standard_Unsigned,
1172 Uint_2 ** Standard_Integer_Size);
1173 Set_Is_Unsigned_Type (Standard_Unsigned);
1174 Set_Size_Known_At_Compile_Time
1175 (Standard_Unsigned);
1176 Set_Is_Known_Valid (Standard_Unsigned, True);
1177
1178 R_Node := New_Node (N_Range, Stloc);
1179 Set_Low_Bound (R_Node, Make_Integer (Uint_0));
1180 Set_High_Bound (R_Node, Make_Integer (Modulus (Standard_Unsigned) - 1));
1181 Set_Etype (Low_Bound (R_Node), Standard_Unsigned);
1182 Set_Etype (High_Bound (R_Node), Standard_Unsigned);
1183 Set_Scalar_Range (Standard_Unsigned, R_Node);
1184
1185 -- Note: universal integer and universal real are constructed as fully
1186 -- formed signed numeric types, with parameters corresponding to the
1187 -- longest runtime types (Long_Long_Integer and Long_Long_Float). This
1188 -- allows Gigi to properly process references to universal types that
1189 -- are not folded at compile time.
1190
1191 Universal_Integer := New_Standard_Entity;
1192 Decl := New_Node (N_Full_Type_Declaration, Stloc);
1193 Set_Defining_Identifier (Decl, Universal_Integer);
1194 Make_Name (Universal_Integer, "universal_integer");
1195 Set_Scope (Universal_Integer, Standard_Standard);
1196 Build_Signed_Integer_Type
1197 (Universal_Integer, Standard_Long_Long_Integer_Size);
1198
1199 Universal_Real := New_Standard_Entity;
1200 Decl := New_Node (N_Full_Type_Declaration, Stloc);
1201 Set_Defining_Identifier (Decl, Universal_Real);
1202 Make_Name (Universal_Real, "universal_real");
1203 Set_Scope (Universal_Real, Standard_Standard);
1204 Build_Float_Type
1205 (Universal_Real,
1206 Standard_Long_Long_Float_Size,
1207 Standard_Long_Long_Float_Digits);
1208
1209 -- Note: universal fixed, unlike universal integer and universal real,
1210 -- is never used at runtime, so it does not need to have bounds set.
1211
1212 Universal_Fixed := New_Standard_Entity;
1213 Decl := New_Node (N_Full_Type_Declaration, Stloc);
1214 Set_Defining_Identifier (Decl, Universal_Fixed);
1215 Make_Name (Universal_Fixed, "universal_fixed");
1216 Set_Ekind (Universal_Fixed, E_Ordinary_Fixed_Point_Type);
1217 Set_Etype (Universal_Fixed, Universal_Fixed);
1218 Set_Scope (Universal_Fixed, Standard_Standard);
1219 Init_Size (Universal_Fixed, Standard_Long_Long_Integer_Size);
1220 Set_Elem_Alignment (Universal_Fixed);
1221 Set_Size_Known_At_Compile_Time
1222 (Universal_Fixed);
1223
1224 -- Create type declaration for Duration, using a 64-bit size. The
1225 -- delta and size values depend on the mode set in system.ads.
1226
1227 Build_Duration : declare
1228 Dlo : Uint;
1229 Dhi : Uint;
1230 Delta_Val : Ureal;
1231
1232 begin
1233 -- In 32 bit mode, the size is 32 bits, and the delta and
1234 -- small values are set to 20 milliseconds (20.0**(10.0**(-3)).
1235
1236 if Duration_32_Bits_On_Target then
1237 Dlo := Intval (Type_Low_Bound (Standard_Integer_32));
1238 Dhi := Intval (Type_High_Bound (Standard_Integer_32));
1239 Delta_Val := UR_From_Components (UI_From_Int (20), Uint_3, 10);
1240
1241 -- In standard 64-bit mode, the size is 64-bits and the delta and
1242 -- small values are set to nanoseconds (1.0**(10.0**(-9))
1243
1244 else
1245 Dlo := Intval (Type_Low_Bound (Standard_Integer_64));
1246 Dhi := Intval (Type_High_Bound (Standard_Integer_64));
1247 Delta_Val := UR_From_Components (Uint_1, Uint_9, 10);
1248 end if;
1249
1250 Tdef_Node := Make_Ordinary_Fixed_Point_Definition (Stloc,
1251 Delta_Expression => Make_Real_Literal (Stloc, Delta_Val),
1252 Real_Range_Specification =>
1253 Make_Real_Range_Specification (Stloc,
1254 Low_Bound => Make_Real_Literal (Stloc,
1255 Realval => Dlo * Delta_Val),
1256 High_Bound => Make_Real_Literal (Stloc,
1257 Realval => Dhi * Delta_Val)));
1258
1259 Set_Type_Definition (Parent (Standard_Duration), Tdef_Node);
1260
1261 Set_Ekind (Standard_Duration, E_Ordinary_Fixed_Point_Type);
1262 Set_Etype (Standard_Duration, Standard_Duration);
1263
1264 if Duration_32_Bits_On_Target then
1265 Init_Size (Standard_Duration, 32);
1266 else
1267 Init_Size (Standard_Duration, 64);
1268 end if;
1269
1270 Set_Elem_Alignment (Standard_Duration);
1271 Set_Delta_Value (Standard_Duration, Delta_Val);
1272 Set_Small_Value (Standard_Duration, Delta_Val);
1273 Set_Scalar_Range (Standard_Duration,
1274 Real_Range_Specification
1275 (Type_Definition (Parent (Standard_Duration))));
1276
1277 -- Normally it does not matter that nodes in package Standard are
1278 -- not marked as analyzed. The Scalar_Range of the fixed-point
1279 -- type Standard_Duration is an exception, because of the special
1280 -- test made in Freeze.Freeze_Fixed_Point_Type.
1281
1282 Set_Analyzed (Scalar_Range (Standard_Duration));
1283
1284 Set_Etype (Type_High_Bound (Standard_Duration), Standard_Duration);
1285 Set_Etype (Type_Low_Bound (Standard_Duration), Standard_Duration);
1286
1287 Set_Is_Static_Expression (Type_High_Bound (Standard_Duration));
1288 Set_Is_Static_Expression (Type_Low_Bound (Standard_Duration));
1289
1290 Set_Corresponding_Integer_Value
1291 (Type_High_Bound (Standard_Duration), Dhi);
1292
1293 Set_Corresponding_Integer_Value
1294 (Type_Low_Bound (Standard_Duration), Dlo);
1295
1296 Set_Size_Known_At_Compile_Time (Standard_Duration);
1297 end Build_Duration;
1298
1299 -- Build standard exception type. Note that the type name here is
1300 -- actually used in the generated code, so it must be set correctly
1301
1302 -- ??? Also note that the Import_Code component is now declared
1303 -- as a System.Standard_Library.Exception_Code to enforce run-time
1304 -- library implementation consistency. It's too early here to resort
1305 -- to rtsfind to get the proper node for that type, so we use the
1306 -- closest possible available type node at hand instead. We should
1307 -- probably be fixing this up at some point.
1308
1309 Standard_Exception_Type := New_Standard_Entity;
1310 Set_Ekind (Standard_Exception_Type, E_Record_Type);
1311 Set_Etype (Standard_Exception_Type, Standard_Exception_Type);
1312 Set_Scope (Standard_Exception_Type, Standard_Standard);
1313 Set_Stored_Constraint
1314 (Standard_Exception_Type, No_Elist);
1315 Init_Size_Align (Standard_Exception_Type);
1316 Set_Size_Known_At_Compile_Time
1317 (Standard_Exception_Type, True);
1318 Make_Name (Standard_Exception_Type, "exception");
1319
1320 Make_Component
1321 (Standard_Exception_Type, Standard_Boolean, "Not_Handled_By_Others");
1322 Make_Component
1323 (Standard_Exception_Type, Standard_Character, "Lang");
1324 Make_Component
1325 (Standard_Exception_Type, Standard_Natural, "Name_Length");
1326 Make_Component
1327 (Standard_Exception_Type, Standard_A_Char, "Full_Name");
1328 Make_Component
1329 (Standard_Exception_Type, Standard_A_Char, "HTable_Ptr");
1330 Make_Component
1331 (Standard_Exception_Type, Standard_Unsigned, "Import_Code");
1332 Make_Component
1333 (Standard_Exception_Type, Standard_A_Char, "Raise_Hook");
1334
1335 -- Build tree for record declaration, for use by the back-end
1336
1337 declare
1338 Comp_List : List_Id;
1339 Comp : Entity_Id;
1340
1341 begin
1342 Comp := First_Entity (Standard_Exception_Type);
1343 Comp_List := New_List;
1344 while Present (Comp) loop
1345 Append (
1346 Make_Component_Declaration (Stloc,
1347 Defining_Identifier => Comp,
1348 Component_Definition =>
1349 Make_Component_Definition (Stloc,
1350 Aliased_Present => False,
1351 Subtype_Indication => New_Occurrence_Of (Etype (Comp),
1352 Stloc))),
1353 Comp_List);
1354
1355 Next_Entity (Comp);
1356 end loop;
1357
1358 Decl := Make_Full_Type_Declaration (Stloc,
1359 Defining_Identifier => Standard_Exception_Type,
1360 Type_Definition =>
1361 Make_Record_Definition (Stloc,
1362 End_Label => Empty,
1363 Component_List =>
1364 Make_Component_List (Stloc,
1365 Component_Items => Comp_List)));
1366 end;
1367
1368 Append (Decl, Decl_S);
1369
1370 Layout_Type (Standard_Exception_Type);
1371
1372 -- Create declarations of standard exceptions
1373
1374 Build_Exception (S_Constraint_Error);
1375 Build_Exception (S_Program_Error);
1376 Build_Exception (S_Storage_Error);
1377 Build_Exception (S_Tasking_Error);
1378
1379 -- Numeric_Error is a normal exception in Ada 83, but in Ada 95
1380 -- it is a renaming of Constraint_Error. Is this test too early???
1381
1382 if Ada_Version = Ada_83 then
1383 Build_Exception (S_Numeric_Error);
1384
1385 else
1386 Decl := New_Node (N_Exception_Renaming_Declaration, Stloc);
1387 E_Id := Standard_Entity (S_Numeric_Error);
1388
1389 Set_Ekind (E_Id, E_Exception);
1390 Set_Exception_Code (E_Id, Uint_0);
1391 Set_Etype (E_Id, Standard_Exception_Type);
1392 Set_Is_Public (E_Id);
1393 Set_Renamed_Entity (E_Id, Standard_Entity (S_Constraint_Error));
1394
1395 Set_Defining_Identifier (Decl, E_Id);
1396 Append (Decl, Decl_S);
1397
1398 Ident_Node := New_Node (N_Identifier, Stloc);
1399 Set_Chars (Ident_Node, Chars (Standard_Entity (S_Constraint_Error)));
1400 Set_Entity (Ident_Node, Standard_Entity (S_Constraint_Error));
1401 Set_Name (Decl, Ident_Node);
1402 end if;
1403
1404 -- Abort_Signal is an entity that does not get made visible
1405
1406 Abort_Signal := New_Standard_Entity;
1407 Set_Chars (Abort_Signal, Name_uAbort_Signal);
1408 Set_Ekind (Abort_Signal, E_Exception);
1409 Set_Exception_Code (Abort_Signal, Uint_0);
1410 Set_Etype (Abort_Signal, Standard_Exception_Type);
1411 Set_Scope (Abort_Signal, Standard_Standard);
1412 Set_Is_Public (Abort_Signal, True);
1413 Decl :=
1414 Make_Exception_Declaration (Stloc,
1415 Defining_Identifier => Abort_Signal);
1416
1417 -- Create defining identifiers for shift operator entities. Note
1418 -- that these entities are used only for marking shift operators
1419 -- generated internally, and hence need no structure, just a name
1420 -- and a unique identity.
1421
1422 Standard_Op_Rotate_Left := New_Standard_Entity;
1423 Set_Chars (Standard_Op_Rotate_Left, Name_Rotate_Left);
1424 Set_Ekind (Standard_Op_Rotate_Left, E_Operator);
1425
1426 Standard_Op_Rotate_Right := New_Standard_Entity;
1427 Set_Chars (Standard_Op_Rotate_Right, Name_Rotate_Right);
1428 Set_Ekind (Standard_Op_Rotate_Right, E_Operator);
1429
1430 Standard_Op_Shift_Left := New_Standard_Entity;
1431 Set_Chars (Standard_Op_Shift_Left, Name_Shift_Left);
1432 Set_Ekind (Standard_Op_Shift_Left, E_Operator);
1433
1434 Standard_Op_Shift_Right := New_Standard_Entity;
1435 Set_Chars (Standard_Op_Shift_Right, Name_Shift_Right);
1436 Set_Ekind (Standard_Op_Shift_Right, E_Operator);
1437
1438 Standard_Op_Shift_Right_Arithmetic := New_Standard_Entity;
1439 Set_Chars (Standard_Op_Shift_Right_Arithmetic,
1440 Name_Shift_Right_Arithmetic);
1441 Set_Ekind (Standard_Op_Shift_Right_Arithmetic,
1442 E_Operator);
1443
1444 -- Create standard operator declarations
1445
1446 Create_Operators;
1447
1448 -- Initialize visibility table with entities in Standard
1449
1450 for E in Standard_Entity_Type loop
1451 if Ekind (Standard_Entity (E)) /= E_Operator then
1452 Set_Name_Entity_Id
1453 (Chars (Standard_Entity (E)), Standard_Entity (E));
1454 Set_Homonym (Standard_Entity (E), Empty);
1455 end if;
1456
1457 if E not in S_ASCII_Names then
1458 Set_Scope (Standard_Entity (E), Standard_Standard);
1459 Set_Is_Immediately_Visible (Standard_Entity (E));
1460 end if;
1461 end loop;
1462
1463 -- The predefined package Standard itself does not have a scope;
1464 -- it is the only entity in the system not to have one, and this
1465 -- is what identifies the package to Gigi.
1466
1467 Set_Scope (Standard_Standard, Empty);
1468
1469 -- Set global variables indicating last Id values and version
1470
1471 Last_Standard_Node_Id := Last_Node_Id;
1472 Last_Standard_List_Id := Last_List_Id;
1473
1474 -- The Error node has an Etype of Any_Type to help error recovery
1475
1476 Set_Etype (Error, Any_Type);
1477
1478 -- Print representation of standard if switch set
1479
1480 if Opt.Print_Standard then
1481 Print_Standard;
1482 end if;
1483 end Create_Standard;
1484
1485 ------------------------------------
1486 -- Create_Unconstrained_Base_Type --
1487 ------------------------------------
1488
1489 procedure Create_Unconstrained_Base_Type
1490 (E : Entity_Id;
1491 K : Entity_Kind)
1492 is
1493 New_Ent : constant Entity_Id := New_Copy (E);
1494
1495 begin
1496 Set_Ekind (E, K);
1497 Set_Is_Constrained (E, True);
1498 Set_Is_First_Subtype (E, True);
1499 Set_Etype (E, New_Ent);
1500
1501 Append_Entity (New_Ent, Standard_Standard);
1502 Set_Is_Constrained (New_Ent, False);
1503 Set_Etype (New_Ent, New_Ent);
1504 Set_Is_Known_Valid (New_Ent, True);
1505
1506 if K = E_Signed_Integer_Subtype then
1507 Set_Etype (Low_Bound (Scalar_Range (E)), New_Ent);
1508 Set_Etype (High_Bound (Scalar_Range (E)), New_Ent);
1509 end if;
1510
1511 end Create_Unconstrained_Base_Type;
1512
1513 --------------------
1514 -- Identifier_For --
1515 --------------------
1516
1517 function Identifier_For (S : Standard_Entity_Type) return Node_Id is
1518 Ident_Node : Node_Id;
1519 begin
1520 Ident_Node := New_Node (N_Identifier, Stloc);
1521 Set_Chars (Ident_Node, Chars (Standard_Entity (S)));
1522 return Ident_Node;
1523 end Identifier_For;
1524
1525 --------------------
1526 -- Make_Component --
1527 --------------------
1528
1529 procedure Make_Component
1530 (Rec : Entity_Id;
1531 Typ : Entity_Id;
1532 Nam : String)
1533 is
1534 Id : constant Entity_Id := New_Standard_Entity;
1535
1536 begin
1537 Set_Ekind (Id, E_Component);
1538 Set_Etype (Id, Typ);
1539 Set_Scope (Id, Rec);
1540 Init_Component_Location (Id);
1541
1542 Set_Original_Record_Component (Id, Id);
1543 Make_Name (Id, Nam);
1544 Append_Entity (Id, Rec);
1545 end Make_Component;
1546
1547 -----------------
1548 -- Make_Formal --
1549 -----------------
1550
1551 function Make_Formal
1552 (Typ : Entity_Id;
1553 Formal_Name : String) return Entity_Id
1554 is
1555 Formal : Entity_Id;
1556
1557 begin
1558 Formal := New_Standard_Entity;
1559
1560 Set_Ekind (Formal, E_In_Parameter);
1561 Set_Mechanism (Formal, Default_Mechanism);
1562 Set_Scope (Formal, Standard_Standard);
1563 Set_Etype (Formal, Typ);
1564 Make_Name (Formal, Formal_Name);
1565
1566 return Formal;
1567 end Make_Formal;
1568
1569 ------------------
1570 -- Make_Integer --
1571 ------------------
1572
1573 function Make_Integer (V : Uint) return Node_Id is
1574 N : constant Node_Id := Make_Integer_Literal (Stloc, V);
1575 begin
1576 Set_Is_Static_Expression (N);
1577 return N;
1578 end Make_Integer;
1579
1580 ---------------
1581 -- Make_Name --
1582 ---------------
1583
1584 procedure Make_Name (Id : Entity_Id; Nam : String) is
1585 begin
1586 for J in 1 .. Nam'Length loop
1587 Name_Buffer (J) := Fold_Lower (Nam (Nam'First + (J - 1)));
1588 end loop;
1589
1590 Name_Len := Nam'Length;
1591 Set_Chars (Id, Name_Find);
1592 end Make_Name;
1593
1594 ------------------
1595 -- New_Operator --
1596 ------------------
1597
1598 function New_Operator (Op : Name_Id; Typ : Entity_Id) return Entity_Id is
1599 Ident_Node : Entity_Id;
1600
1601 begin
1602 Ident_Node := Make_Defining_Identifier (Stloc, Op);
1603
1604 Set_Is_Pure (Ident_Node, True);
1605 Set_Ekind (Ident_Node, E_Operator);
1606 Set_Etype (Ident_Node, Typ);
1607 Set_Scope (Ident_Node, Standard_Standard);
1608 Set_Homonym (Ident_Node, Get_Name_Entity_Id (Op));
1609 Set_Convention (Ident_Node, Convention_Intrinsic);
1610
1611 Set_Is_Immediately_Visible (Ident_Node, True);
1612 Set_Is_Intrinsic_Subprogram (Ident_Node, True);
1613
1614 Set_Name_Entity_Id (Op, Ident_Node);
1615 Append_Entity (Ident_Node, Standard_Standard);
1616 return Ident_Node;
1617 end New_Operator;
1618
1619 -------------------------
1620 -- New_Standard_Entity --
1621 -------------------------
1622
1623 function New_Standard_Entity
1624 (New_Node_Kind : Node_Kind := N_Defining_Identifier) return Entity_Id
1625 is
1626 E : constant Entity_Id := New_Entity (New_Node_Kind, Stloc);
1627
1628 begin
1629 -- All standard entities are Pure and Public
1630
1631 Set_Is_Pure (E);
1632 Set_Is_Public (E);
1633
1634 -- All standard entity names are analyzed manually, and are thus
1635 -- frozen as soon as they are created.
1636
1637 Set_Is_Frozen (E);
1638
1639 -- Set debug information required for all standard types
1640
1641 Set_Needs_Debug_Info (E);
1642
1643 -- All standard entities are built with fully qualified names, so
1644 -- set the flag to prevent an abortive attempt at requalification!
1645
1646 Set_Has_Qualified_Name (E);
1647
1648 -- Return newly created entity to be completed by caller
1649
1650 return E;
1651 end New_Standard_Entity;
1652
1653 --------------------
1654 -- Print_Standard --
1655 --------------------
1656
1657 procedure Print_Standard is
1658
1659 procedure P (Item : String) renames Output.Write_Line;
1660 -- Short-hand, since we do a lot of line writes here!
1661
1662 procedure P_Int_Range (Size : Pos);
1663 -- Prints the range of an integer based on its Size
1664
1665 procedure P_Float_Range (Id : Entity_Id);
1666 -- Prints the bounds range for the given float type entity
1667
1668 -------------------
1669 -- P_Float_Range --
1670 -------------------
1671
1672 procedure P_Float_Range (Id : Entity_Id) is
1673 Digs : constant Nat := UI_To_Int (Digits_Value (Id));
1674
1675 begin
1676 Write_Str (" range ");
1677
1678 if Vax_Float (Id) then
1679 if Digs = VAXFF_Digits then
1680 Write_Str (VAXFF_First'Universal_Literal_String);
1681 Write_Str (" .. ");
1682 Write_Str (VAXFF_Last'Universal_Literal_String);
1683
1684 elsif Digs = VAXDF_Digits then
1685 Write_Str (VAXDF_First'Universal_Literal_String);
1686 Write_Str (" .. ");
1687 Write_Str (VAXDF_Last'Universal_Literal_String);
1688
1689 else
1690 pragma Assert (Digs = VAXGF_Digits);
1691
1692 Write_Str (VAXGF_First'Universal_Literal_String);
1693 Write_Str (" .. ");
1694 Write_Str (VAXGF_Last'Universal_Literal_String);
1695 end if;
1696
1697 elsif Is_AAMP_Float (Id) then
1698 if Digs = AAMPS_Digits then
1699 Write_Str (AAMPS_First'Universal_Literal_String);
1700 Write_Str (" .. ");
1701 Write_Str (AAMPS_Last'Universal_Literal_String);
1702
1703 else
1704 pragma Assert (Digs = AAMPL_Digits);
1705 Write_Str (AAMPL_First'Universal_Literal_String);
1706 Write_Str (" .. ");
1707 Write_Str (AAMPL_Last'Universal_Literal_String);
1708 end if;
1709
1710 elsif Digs = IEEES_Digits then
1711 Write_Str (IEEES_First'Universal_Literal_String);
1712 Write_Str (" .. ");
1713 Write_Str (IEEES_Last'Universal_Literal_String);
1714
1715 elsif Digs = IEEEL_Digits then
1716 Write_Str (IEEEL_First'Universal_Literal_String);
1717 Write_Str (" .. ");
1718 Write_Str (IEEEL_Last'Universal_Literal_String);
1719
1720 else
1721 pragma Assert (Digs = IEEEX_Digits);
1722
1723 Write_Str (IEEEX_First'Universal_Literal_String);
1724 Write_Str (" .. ");
1725 Write_Str (IEEEX_Last'Universal_Literal_String);
1726 end if;
1727
1728 Write_Str (";");
1729 Write_Eol;
1730 end P_Float_Range;
1731
1732 -----------------
1733 -- P_Int_Range --
1734 -----------------
1735
1736 procedure P_Int_Range (Size : Pos) is
1737 begin
1738 Write_Str (" is range -(2 **");
1739 Write_Int (Size - 1);
1740 Write_Str (")");
1741 Write_Str (" .. +(2 **");
1742 Write_Int (Size - 1);
1743 Write_Str (" - 1);");
1744 Write_Eol;
1745 end P_Int_Range;
1746
1747 -- Start of processing for Print_Standard
1748
1749 begin
1750 P ("-- Representation of package Standard");
1751 Write_Eol;
1752 P ("-- This is not accurate Ada, since new base types cannot be ");
1753 P ("-- created, but the listing shows the target dependent");
1754 P ("-- characteristics of the Standard types for this compiler");
1755 Write_Eol;
1756
1757 P ("package Standard is");
1758 P ("pragma Pure (Standard);");
1759 Write_Eol;
1760
1761 P (" type Boolean is (False, True);");
1762 P (" for Boolean'Size use 1;");
1763 P (" for Boolean use (False => 0, True => 1);");
1764 Write_Eol;
1765
1766 -- Integer types
1767
1768 Write_Str (" type Integer");
1769 P_Int_Range (Standard_Integer_Size);
1770 Write_Str (" for Integer'Size use ");
1771 Write_Int (Standard_Integer_Size);
1772 P (";");
1773 Write_Eol;
1774
1775 P (" subtype Natural is Integer range 0 .. Integer'Last;");
1776 P (" subtype Positive is Integer range 1 .. Integer'Last;");
1777 Write_Eol;
1778
1779 Write_Str (" type Short_Short_Integer");
1780 P_Int_Range (Standard_Short_Short_Integer_Size);
1781 Write_Str (" for Short_Short_Integer'Size use ");
1782 Write_Int (Standard_Short_Short_Integer_Size);
1783 P (";");
1784 Write_Eol;
1785
1786 Write_Str (" type Short_Integer");
1787 P_Int_Range (Standard_Short_Integer_Size);
1788 Write_Str (" for Short_Integer'Size use ");
1789 Write_Int (Standard_Short_Integer_Size);
1790 P (";");
1791 Write_Eol;
1792
1793 Write_Str (" type Long_Integer");
1794 P_Int_Range (Standard_Long_Integer_Size);
1795 Write_Str (" for Long_Integer'Size use ");
1796 Write_Int (Standard_Long_Integer_Size);
1797 P (";");
1798 Write_Eol;
1799
1800 Write_Str (" type Long_Long_Integer");
1801 P_Int_Range (Standard_Long_Long_Integer_Size);
1802 Write_Str (" for Long_Long_Integer'Size use ");
1803 Write_Int (Standard_Long_Long_Integer_Size);
1804 P (";");
1805 Write_Eol;
1806
1807 -- Floating point types
1808
1809 Write_Str (" type Short_Float is digits ");
1810 Write_Int (Standard_Short_Float_Digits);
1811 Write_Eol;
1812 P_Float_Range (Standard_Short_Float);
1813 Write_Str (" for Short_Float'Size use ");
1814 Write_Int (Standard_Short_Float_Size);
1815 P (";");
1816 Write_Eol;
1817
1818 Write_Str (" type Float is digits ");
1819 Write_Int (Standard_Float_Digits);
1820 Write_Eol;
1821 P_Float_Range (Standard_Float);
1822 Write_Str (" for Float'Size use ");
1823 Write_Int (Standard_Float_Size);
1824 P (";");
1825 Write_Eol;
1826
1827 Write_Str (" type Long_Float is digits ");
1828 Write_Int (Standard_Long_Float_Digits);
1829 Write_Eol;
1830 P_Float_Range (Standard_Long_Float);
1831 Write_Str (" for Long_Float'Size use ");
1832 Write_Int (Standard_Long_Float_Size);
1833 P (";");
1834 Write_Eol;
1835
1836 Write_Str (" type Long_Long_Float is digits ");
1837 Write_Int (Standard_Long_Long_Float_Digits);
1838 Write_Eol;
1839 P_Float_Range (Standard_Long_Long_Float);
1840 Write_Str (" for Long_Long_Float'Size use ");
1841 Write_Int (Standard_Long_Long_Float_Size);
1842 P (";");
1843 Write_Eol;
1844
1845 P (" type Character is (...)");
1846 Write_Str (" for Character'Size use ");
1847 Write_Int (Standard_Character_Size);
1848 P (";");
1849 P (" -- See RM A.1(35) for details of this type");
1850 Write_Eol;
1851
1852 P (" type Wide_Character is (...)");
1853 Write_Str (" for Wide_Character'Size use ");
1854 Write_Int (Standard_Wide_Character_Size);
1855 P (";");
1856 P (" -- See RM A.1(36) for details of this type");
1857 Write_Eol;
1858
1859 P (" type Wide_Wide_Character is (...)");
1860 Write_Str (" for Wide_Wide_Character'Size use ");
1861 Write_Int (Standard_Wide_Wide_Character_Size);
1862 P (";");
1863 P (" -- See RM A.1(36) for details of this type");
1864
1865 P (" type String is array (Positive range <>) of Character;");
1866 P (" pragma Pack (String);");
1867 Write_Eol;
1868
1869 P (" type Wide_String is array (Positive range <>)" &
1870 " of Wide_Character;");
1871 P (" pragma Pack (Wide_String);");
1872 Write_Eol;
1873
1874 P (" type Wide_Wide_String is array (Positive range <>)" &
1875 " of Wide_Wide_Character;");
1876 P (" pragma Pack (Wide_Wide_String);");
1877 Write_Eol;
1878
1879 -- Here it's OK to use the Duration type of the host compiler since
1880 -- the implementation of Duration in GNAT is target independent.
1881
1882 if Duration_32_Bits_On_Target then
1883 P (" type Duration is delta 0.020");
1884 P (" range -((2 ** 31 - 1) * 0.020) ..");
1885 P (" +((2 ** 31 - 1) * 0.020);");
1886 P (" for Duration'Small use 0.020;");
1887 else
1888 P (" type Duration is delta 0.000000001");
1889 P (" range -((2 ** 63 - 1) * 0.000000001) ..");
1890 P (" +((2 ** 63 - 1) * 0.000000001);");
1891 P (" for Duration'Small use 0.000000001;");
1892 end if;
1893
1894 Write_Eol;
1895
1896 P (" Constraint_Error : exception;");
1897 P (" Program_Error : exception;");
1898 P (" Storage_Error : exception;");
1899 P (" Tasking_Error : exception;");
1900 P (" Numeric_Error : exception renames Constraint_Error;");
1901 Write_Eol;
1902
1903 P ("end Standard;");
1904 end Print_Standard;
1905
1906 ----------------------
1907 -- Set_Float_Bounds --
1908 ----------------------
1909
1910 procedure Set_Float_Bounds (Id : Entity_Id) is
1911 L : Node_Id;
1912 -- Low bound of literal value
1913
1914 H : Node_Id;
1915 -- High bound of literal value
1916
1917 R : Node_Id;
1918 -- Range specification
1919
1920 Digs : constant Nat := UI_To_Int (Digits_Value (Id));
1921 -- Digits value, used to select bounds
1922
1923 begin
1924 -- Note: for the call from Cstand to initially create the types in
1925 -- Standard, Vax_Float will always be False. Circuitry in Sem_Vfpt
1926 -- will adjust these types appropriately in the Vax_Float case if
1927 -- a pragma Float_Representation (VAX_Float) is used.
1928
1929 if Vax_Float (Id) then
1930 if Digs = VAXFF_Digits then
1931 L := Real_Convert
1932 (VAXFF_First'Universal_Literal_String);
1933 H := Real_Convert
1934 (VAXFF_Last'Universal_Literal_String);
1935
1936 elsif Digs = VAXDF_Digits then
1937 L := Real_Convert
1938 (VAXDF_First'Universal_Literal_String);
1939 H := Real_Convert
1940 (VAXDF_Last'Universal_Literal_String);
1941
1942 else
1943 pragma Assert (Digs = VAXGF_Digits);
1944
1945 L := Real_Convert
1946 (VAXGF_First'Universal_Literal_String);
1947 H := Real_Convert
1948 (VAXGF_Last'Universal_Literal_String);
1949 end if;
1950
1951 elsif Is_AAMP_Float (Id) then
1952 if Digs = AAMPS_Digits then
1953 L := Real_Convert
1954 (AAMPS_First'Universal_Literal_String);
1955 H := Real_Convert
1956 (AAMPS_Last'Universal_Literal_String);
1957
1958 else
1959 pragma Assert (Digs = AAMPL_Digits);
1960 L := Real_Convert
1961 (AAMPL_First'Universal_Literal_String);
1962 H := Real_Convert
1963 (AAMPL_Last'Universal_Literal_String);
1964 end if;
1965
1966 elsif Digs = IEEES_Digits then
1967 L := Real_Convert
1968 (IEEES_First'Universal_Literal_String);
1969 H := Real_Convert
1970 (IEEES_Last'Universal_Literal_String);
1971
1972 elsif Digs = IEEEL_Digits then
1973 L := Real_Convert
1974 (IEEEL_First'Universal_Literal_String);
1975 H := Real_Convert
1976 (IEEEL_Last'Universal_Literal_String);
1977
1978 else
1979 pragma Assert (Digs = IEEEX_Digits);
1980
1981 L := Real_Convert
1982 (IEEEX_First'Universal_Literal_String);
1983 H := Real_Convert
1984 (IEEEX_Last'Universal_Literal_String);
1985 end if;
1986
1987 Set_Etype (L, Id);
1988 Set_Is_Static_Expression (L);
1989
1990 Set_Etype (H, Id);
1991 Set_Is_Static_Expression (H);
1992
1993 R := New_Node (N_Range, Stloc);
1994 Set_Low_Bound (R, L);
1995 Set_High_Bound (R, H);
1996 Set_Includes_Infinities (R, True);
1997 Set_Scalar_Range (Id, R);
1998 Set_Etype (R, Id);
1999 Set_Parent (R, Id);
2000 end Set_Float_Bounds;
2001
2002 ------------------------
2003 -- Set_Integer_Bounds --
2004 ------------------------
2005
2006 procedure Set_Integer_Bounds
2007 (Id : Entity_Id;
2008 Typ : Entity_Id;
2009 Lb : Uint;
2010 Hb : Uint)
2011 is
2012 L : Node_Id; -- Low bound of literal value
2013 H : Node_Id; -- High bound of literal value
2014 R : Node_Id; -- Range specification
2015
2016 begin
2017 L := Make_Integer (Lb);
2018 H := Make_Integer (Hb);
2019
2020 Set_Etype (L, Typ);
2021 Set_Etype (H, Typ);
2022
2023 R := New_Node (N_Range, Stloc);
2024 Set_Low_Bound (R, L);
2025 Set_High_Bound (R, H);
2026 Set_Scalar_Range (Id, R);
2027 Set_Etype (R, Typ);
2028 Set_Parent (R, Id);
2029 Set_Is_Unsigned_Type (Id, Lb >= 0);
2030 end Set_Integer_Bounds;
2031
2032 end CStand;
GCC graphite test results