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Merge from mainline (165734:167278).
[official-gcc/graphite-test-results.git] / gcc / ada / cstand.adb
blobea1ecb661e8c50e7c96485338cb9787b48333d90
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 Scn;
40 with Sem_Mech; use Sem_Mech;
41 with Sem_Util; use Sem_Util;
42 with Sinfo; use Sinfo;
43 with Snames; use Snames;
44 with Stand; use Stand;
45 with Uintp; use Uintp;
46 with Urealp; use Urealp;
47
48 package body CStand is
49
50 Stloc : constant Source_Ptr := Standard_Location;
51 Staloc : constant Source_Ptr := Standard_ASCII_Location;
52 -- Standard abbreviations used throughout this package
53
54 -----------------------
55 -- Local Subprograms --
56 -----------------------
57
58 procedure Build_Float_Type (E : Entity_Id; Siz : Int; Digs : Int);
59 -- Procedure to build standard predefined float base type. The first
60 -- parameter is the entity for the type, and the second parameter
61 -- is the size in bits. The third parameter is the digits value.
62
63 procedure Build_Signed_Integer_Type (E : Entity_Id; Siz : Int);
64 -- Procedure to build standard predefined signed integer subtype. The
65 -- first parameter is the entity for the subtype. The second parameter
66 -- is the size in bits. The corresponding base type is not built by
67 -- this routine but instead must be built by the caller where needed.
68
69 procedure Create_Operators;
70 -- Make entries for each of the predefined operators in Standard
71
72 procedure Create_Unconstrained_Base_Type
73 (E : Entity_Id;
74 K : Entity_Kind);
75 -- The predefined signed integer types are constrained subtypes which
76 -- must have a corresponding unconstrained base type. This type is almost
77 -- useless. The only place it has semantics is Subtypes_Statically_Match.
78 -- Consequently, we arrange for it to be identical apart from the setting
79 -- of the constrained bit. This routine takes an entity E for the Type,
80 -- copies it to estabish the base type, then resets the Ekind of the
81 -- original entity to K (the Ekind for the subtype). The Etype field of
82 -- E is set by the call (to point to the created base type entity), and
83 -- also the Is_Constrained flag of E is set.
84 --
85 -- To understand the exact requirement for this, see RM 3.5.4(11) which
86 -- makes it clear that Integer, for example, is constrained, with the
87 -- constraint bounds matching the bounds of the (unconstrained) base
88 -- type. The point is that Integer and Integer'Base have identical
89 -- bounds, but do not statically match, since a subtype with constraints
90 -- never matches a subtype with no constraints.
91
92 function Identifier_For (S : Standard_Entity_Type) return Node_Id;
93 -- Returns an identifier node with the same name as the defining
94 -- identifier corresponding to the given Standard_Entity_Type value
95
96 procedure Make_Component
97 (Rec : Entity_Id;
98 Typ : Entity_Id;
99 Nam : String);
100 -- Build a record component with the given type and name, and append to
101 -- the list of components of Rec.
102
103 function Make_Formal
104 (Typ : Entity_Id;
105 Formal_Name : String) return Entity_Id;
106 -- Construct entity for subprogram formal with given name and type
107
108 function Make_Integer (V : Uint) return Node_Id;
109 -- Builds integer literal with given value
110
111 procedure Make_Name (Id : Entity_Id; Nam : String);
112 -- Make an entry in the names table for Nam, and set as Chars field of Id
113
114 function New_Operator (Op : Name_Id; Typ : Entity_Id) return Entity_Id;
115 -- Build entity for standard operator with given name and type
116
117 function New_Standard_Entity
118 (New_Node_Kind : Node_Kind := N_Defining_Identifier) return Entity_Id;
119 -- Builds a new entity for Standard
120
121 procedure Print_Standard;
122 -- Print representation of package Standard if switch set
123
124 procedure Set_Integer_Bounds
125 (Id : Entity_Id;
126 Typ : Entity_Id;
127 Lb : Uint;
128 Hb : Uint);
129 -- Procedure to set bounds for integer type or subtype. Id is the entity
130 -- whose bounds and type are to be set. The Typ parameter is the Etype
131 -- value for the entity (which will be the same as Id for all predefined
132 -- integer base types. The third and fourth parameters are the bounds.
133
134 ----------------------
135 -- Build_Float_Type --
136 ----------------------
137
138 procedure Build_Float_Type (E : Entity_Id; Siz : Int; Digs : Int) is
139 begin
140 Set_Type_Definition (Parent (E),
141 Make_Floating_Point_Definition (Stloc,
142 Digits_Expression => Make_Integer (UI_From_Int (Digs))));
143
144 Set_Ekind (E, E_Floating_Point_Type);
145 Set_Etype (E, E);
146
147 if AAMP_On_Target then
148 Set_Float_Rep (E, AAMP);
149 else
150 Set_Float_Rep (E, IEEE_Binary);
151 end if;
152
153 Init_Size (E, Siz);
154 Set_Elem_Alignment (E);
155 Init_Digits_Value (E, Digs);
156 Set_Float_Bounds (E);
157 Set_Is_Frozen (E);
158 Set_Is_Public (E);
159 Set_Size_Known_At_Compile_Time (E);
160 end Build_Float_Type;
161
162 -------------------------------
163 -- Build_Signed_Integer_Type --
164 -------------------------------
165
166 procedure Build_Signed_Integer_Type (E : Entity_Id; Siz : Int) is
167 U2Siz1 : constant Uint := 2 ** (Siz - 1);
168 Lbound : constant Uint := -U2Siz1;
169 Ubound : constant Uint := U2Siz1 - 1;
170
171 begin
172 Set_Type_Definition (Parent (E),
173 Make_Signed_Integer_Type_Definition (Stloc,
174 Low_Bound => Make_Integer (Lbound),
175 High_Bound => Make_Integer (Ubound)));
176
177 Set_Ekind (E, E_Signed_Integer_Type);
178 Set_Etype (E, E);
179 Init_Size (E, Siz);
180 Set_Elem_Alignment (E);
181 Set_Integer_Bounds (E, E, Lbound, Ubound);
182 Set_Is_Frozen (E);
183 Set_Is_Public (E);
184 Set_Is_Known_Valid (E);
185 Set_Size_Known_At_Compile_Time (E);
186 end Build_Signed_Integer_Type;
187
188 ----------------------
189 -- Create_Operators --
190 ----------------------
191
192 -- Each operator has an abbreviated signature. The formals have the names
193 -- LEFT and RIGHT. Their types are not actually used for resolution.
194
195 procedure Create_Operators is
196 Op_Node : Entity_Id;
197
198 -- The following tables define the binary and unary operators and their
199 -- corresponding result type.
200
201 Binary_Ops : constant array (S_Binary_Ops) of Name_Id :=
202
203 -- There is one entry here for each binary operator, except for the
204 -- case of concatenation, where there are three entries, one for a
205 -- String result, one for Wide_String, and one for Wide_Wide_String.
206
207 (Name_Op_Add,
208 Name_Op_And,
209 Name_Op_Concat,
210 Name_Op_Concat,
211 Name_Op_Concat,
212 Name_Op_Divide,
213 Name_Op_Eq,
214 Name_Op_Expon,
215 Name_Op_Ge,
216 Name_Op_Gt,
217 Name_Op_Le,
218 Name_Op_Lt,
219 Name_Op_Mod,
220 Name_Op_Multiply,
221 Name_Op_Ne,
222 Name_Op_Or,
223 Name_Op_Rem,
224 Name_Op_Subtract,
225 Name_Op_Xor);
226
227 Bin_Op_Types : constant array (S_Binary_Ops) of Entity_Id :=
228
229 -- This table has the corresponding result types. The entries are
230 -- ordered so they correspond to the Binary_Ops array above.
231
232 (Universal_Integer, -- Add
233 Standard_Boolean, -- And
234 Standard_String, -- Concat (String)
235 Standard_Wide_String, -- Concat (Wide_String)
236 Standard_Wide_Wide_String, -- Concat (Wide_Wide_String)
237 Universal_Integer, -- Divide
238 Standard_Boolean, -- Eq
239 Universal_Integer, -- Expon
240 Standard_Boolean, -- Ge
241 Standard_Boolean, -- Gt
242 Standard_Boolean, -- Le
243 Standard_Boolean, -- Lt
244 Universal_Integer, -- Mod
245 Universal_Integer, -- Multiply
246 Standard_Boolean, -- Ne
247 Standard_Boolean, -- Or
248 Universal_Integer, -- Rem
249 Universal_Integer, -- Subtract
250 Standard_Boolean); -- Xor
251
252 Unary_Ops : constant array (S_Unary_Ops) of Name_Id :=
253
254 -- There is one entry here for each unary operator
255
256 (Name_Op_Abs,
257 Name_Op_Subtract,
258 Name_Op_Not,
259 Name_Op_Add);
260
261 Unary_Op_Types : constant array (S_Unary_Ops) of Entity_Id :=
262
263 -- This table has the corresponding result types. The entries are
264 -- ordered so they correspond to the Unary_Ops array above.
265
266 (Universal_Integer, -- Abs
267 Universal_Integer, -- Subtract
268 Standard_Boolean, -- Not
269 Universal_Integer); -- Add
270
271 begin
272 for J in S_Binary_Ops loop
273 Op_Node := New_Operator (Binary_Ops (J), Bin_Op_Types (J));
274 SE (J) := Op_Node;
275 Append_Entity (Make_Formal (Any_Type, "LEFT"), Op_Node);
276 Append_Entity (Make_Formal (Any_Type, "RIGHT"), Op_Node);
277 end loop;
278
279 for J in S_Unary_Ops loop
280 Op_Node := New_Operator (Unary_Ops (J), Unary_Op_Types (J));
281 SE (J) := Op_Node;
282 Append_Entity (Make_Formal (Any_Type, "RIGHT"), Op_Node);
283 end loop;
284
285 -- For concatenation, we create a separate operator for each
286 -- array type. This simplifies the resolution of the component-
287 -- component concatenation operation. In Standard, we set the types
288 -- of the formals for string, wide [wide]_string, concatenations.
289
290 Set_Etype (First_Entity (Standard_Op_Concat), Standard_String);
291 Set_Etype (Last_Entity (Standard_Op_Concat), Standard_String);
292
293 Set_Etype (First_Entity (Standard_Op_Concatw), Standard_Wide_String);
294 Set_Etype (Last_Entity (Standard_Op_Concatw), Standard_Wide_String);
295
296 Set_Etype (First_Entity (Standard_Op_Concatww),
297 Standard_Wide_Wide_String);
298
299 Set_Etype (Last_Entity (Standard_Op_Concatww),
300 Standard_Wide_Wide_String);
301 end Create_Operators;
302
303 ---------------------
304 -- Create_Standard --
305 ---------------------
306
307 -- The tree for the package Standard is prefixed to all compilations.
308 -- Several entities required by semantic analysis are denoted by global
309 -- variables that are initialized to point to the corresponding
310 -- occurrences in STANDARD. The visible entities of STANDARD are
311 -- created here. The private entities defined in STANDARD are created
312 -- by Initialize_Standard in the semantics module.
313
314 procedure Create_Standard is
315 Decl_S : constant List_Id := New_List;
316 -- List of declarations in Standard
317
318 Decl_A : constant List_Id := New_List;
319 -- List of declarations in ASCII
320
321 Decl : Node_Id;
322 Pspec : Node_Id;
323 Tdef_Node : Node_Id;
324 Ident_Node : Node_Id;
325 Ccode : Char_Code;
326 E_Id : Entity_Id;
327 R_Node : Node_Id;
328 B_Node : Node_Id;
329
330 procedure Build_Exception (S : Standard_Entity_Type);
331 -- Procedure to declare given entity as an exception
332
333 procedure Pack_String_Type (String_Type : Entity_Id);
334 -- Generate proper tree for pragma Pack that applies to given type, and
335 -- mark type as having the pragma.
336
337 ---------------------
338 -- Build_Exception --
339 ---------------------
340
341 procedure Build_Exception (S : Standard_Entity_Type) is
342 begin
343 Set_Ekind (Standard_Entity (S), E_Exception);
344 Set_Etype (Standard_Entity (S), Standard_Exception_Type);
345 Set_Exception_Code (Standard_Entity (S), Uint_0);
346 Set_Is_Public (Standard_Entity (S), True);
347
348 Decl :=
349 Make_Exception_Declaration (Stloc,
350 Defining_Identifier => Standard_Entity (S));
351 Append (Decl, Decl_S);
352 end Build_Exception;
353
354 ----------------------
355 -- Pack_String_Type --
356 ----------------------
357
358 procedure Pack_String_Type (String_Type : Entity_Id) is
359 Prag : constant Node_Id :=
360 Make_Pragma (Stloc,
361 Chars => Name_Pack,
362 Pragma_Argument_Associations =>
363 New_List (
364 Make_Pragma_Argument_Association (Stloc,
365 Expression =>
366 New_Occurrence_Of (String_Type, Stloc))));
367 begin
368 Append (Prag, Decl_S);
369 Record_Rep_Item (String_Type, Prag);
370 Set_Has_Pragma_Pack (String_Type, True);
371 end Pack_String_Type;
372
373 -- Start of processing for Create_Standard
374
375 begin
376 -- Initialize scanner for internal scans of literals
377
378 Scn.Initialize_Scanner (No_Unit, Internal_Source_File);
379
380 -- First step is to create defining identifiers for each entity
381
382 for S in Standard_Entity_Type loop
383 declare
384 S_Name : constant String := Standard_Entity_Type'Image (S);
385 -- Name of entity (note we skip S_ at the start)
386
387 Ident_Node : Node_Id;
388 -- Defining identifier node
389
390 begin
391 Ident_Node := New_Standard_Entity;
392 Make_Name (Ident_Node, S_Name (3 .. S_Name'Length));
393 Standard_Entity (S) := Ident_Node;
394 end;
395 end loop;
396
397 -- Create package declaration node for package Standard
398
399 Standard_Package_Node := New_Node (N_Package_Declaration, Stloc);
400
401 Pspec := New_Node (N_Package_Specification, Stloc);
402 Set_Specification (Standard_Package_Node, Pspec);
403
404 Set_Defining_Unit_Name (Pspec, Standard_Standard);
405 Set_Visible_Declarations (Pspec, Decl_S);
406
407 Set_Ekind (Standard_Standard, E_Package);
408 Set_Is_Pure (Standard_Standard);
409 Set_Is_Compilation_Unit (Standard_Standard);
410
411 -- Create type/subtype declaration nodes for standard types
412
413 for S in S_Types loop
414
415 -- Subtype declaration case
416
417 if S = S_Natural or else S = S_Positive then
418 Decl := New_Node (N_Subtype_Declaration, Stloc);
419 Set_Subtype_Indication (Decl,
420 New_Occurrence_Of (Standard_Integer, Stloc));
421
422 -- Full type declaration case
423
424 else
425 Decl := New_Node (N_Full_Type_Declaration, Stloc);
426 end if;
427
428 Set_Is_Frozen (Standard_Entity (S));
429 Set_Is_Public (Standard_Entity (S));
430 Set_Defining_Identifier (Decl, Standard_Entity (S));
431 Append (Decl, Decl_S);
432 end loop;
433
434 -- Create type definition node for type Boolean. The Size is set to
435 -- 1 as required by Ada 95 and current ARG interpretations for Ada/83.
436
437 -- Note: Object_Size of Boolean is 8. This means that we do NOT in
438 -- general know that Boolean variables have valid values, so we do
439 -- not set the Is_Known_Valid flag.
440
441 Tdef_Node := New_Node (N_Enumeration_Type_Definition, Stloc);
442 Set_Literals (Tdef_Node, New_List);
443 Append (Standard_False, Literals (Tdef_Node));
444 Append (Standard_True, Literals (Tdef_Node));
445 Set_Type_Definition (Parent (Standard_Boolean), Tdef_Node);
446
447 Set_Ekind (Standard_Boolean, E_Enumeration_Type);
448 Set_First_Literal (Standard_Boolean, Standard_False);
449 Set_Etype (Standard_Boolean, Standard_Boolean);
450 Init_Esize (Standard_Boolean, Standard_Character_Size);
451 Init_RM_Size (Standard_Boolean, 1);
452 Set_Elem_Alignment (Standard_Boolean);
453
454 Set_Is_Unsigned_Type (Standard_Boolean);
455 Set_Size_Known_At_Compile_Time (Standard_Boolean);
456 Set_Has_Pragma_Ordered (Standard_Boolean);
457
458 Set_Ekind (Standard_True, E_Enumeration_Literal);
459 Set_Etype (Standard_True, Standard_Boolean);
460 Set_Enumeration_Pos (Standard_True, Uint_1);
461 Set_Enumeration_Rep (Standard_True, Uint_1);
462 Set_Is_Known_Valid (Standard_True, True);
463
464 Set_Ekind (Standard_False, E_Enumeration_Literal);
465 Set_Etype (Standard_False, Standard_Boolean);
466 Set_Enumeration_Pos (Standard_False, Uint_0);
467 Set_Enumeration_Rep (Standard_False, Uint_0);
468 Set_Is_Known_Valid (Standard_False, True);
469
470 -- For the bounds of Boolean, we create a range node corresponding to
471
472 -- range False .. True
473
474 -- where the occurrences of the literals must point to the
475 -- corresponding definition.
476
477 R_Node := New_Node (N_Range, Stloc);
478 B_Node := New_Node (N_Identifier, Stloc);
479 Set_Chars (B_Node, Chars (Standard_False));
480 Set_Entity (B_Node, Standard_False);
481 Set_Etype (B_Node, Standard_Boolean);
482 Set_Is_Static_Expression (B_Node);
483 Set_Low_Bound (R_Node, B_Node);
484
485 B_Node := New_Node (N_Identifier, Stloc);
486 Set_Chars (B_Node, Chars (Standard_True));
487 Set_Entity (B_Node, Standard_True);
488 Set_Etype (B_Node, Standard_Boolean);
489 Set_Is_Static_Expression (B_Node);
490 Set_High_Bound (R_Node, B_Node);
491
492 Set_Scalar_Range (Standard_Boolean, R_Node);
493 Set_Etype (R_Node, Standard_Boolean);
494 Set_Parent (R_Node, Standard_Boolean);
495
496 -- Record entity identifiers for boolean literals in the
497 -- Boolean_Literals array, for easy reference during expansion.
498
499 Boolean_Literals := (False => Standard_False, True => Standard_True);
500
501 -- Create type definition nodes for predefined integer types
502
503 Build_Signed_Integer_Type
504 (Standard_Short_Short_Integer, Standard_Short_Short_Integer_Size);
505
506 Build_Signed_Integer_Type
507 (Standard_Short_Integer, Standard_Short_Integer_Size);
508
509 Build_Signed_Integer_Type
510 (Standard_Integer, Standard_Integer_Size);
511
512 declare
513 LIS : Nat;
514 begin
515 if Debug_Flag_M then
516 LIS := 64;
517 else
518 LIS := Standard_Long_Integer_Size;
519 end if;
520
521 Build_Signed_Integer_Type (Standard_Long_Integer, LIS);
522 end;
523
524 Build_Signed_Integer_Type
525 (Standard_Long_Long_Integer, Standard_Long_Long_Integer_Size);
526
527 Create_Unconstrained_Base_Type
528 (Standard_Short_Short_Integer, E_Signed_Integer_Subtype);
529
530 Create_Unconstrained_Base_Type
531 (Standard_Short_Integer, E_Signed_Integer_Subtype);
532
533 Create_Unconstrained_Base_Type
534 (Standard_Integer, E_Signed_Integer_Subtype);
535
536 Create_Unconstrained_Base_Type
537 (Standard_Long_Integer, E_Signed_Integer_Subtype);
538
539 Create_Unconstrained_Base_Type
540 (Standard_Long_Long_Integer, E_Signed_Integer_Subtype);
541
542 -- Create type definition nodes for predefined float types
543
544 Build_Float_Type
545 (Standard_Short_Float,
546 Standard_Short_Float_Size,
547 Standard_Short_Float_Digits);
548
549 Build_Float_Type
550 (Standard_Float,
551 Standard_Float_Size,
552 Standard_Float_Digits);
553
554 Build_Float_Type
555 (Standard_Long_Float,
556 Standard_Long_Float_Size,
557 Standard_Long_Float_Digits);
558
559 Build_Float_Type
560 (Standard_Long_Long_Float,
561 Standard_Long_Long_Float_Size,
562 Standard_Long_Long_Float_Digits);
563
564 -- Create type definition node for type Character. Note that we do not
565 -- set the Literals field, since type Character is handled with special
566 -- routine that do not need a literal list.
567
568 Tdef_Node := New_Node (N_Enumeration_Type_Definition, Stloc);
569 Set_Type_Definition (Parent (Standard_Character), Tdef_Node);
570
571 Set_Ekind (Standard_Character, E_Enumeration_Type);
572 Set_Etype (Standard_Character, Standard_Character);
573 Init_Esize (Standard_Character, Standard_Character_Size);
574 Init_RM_Size (Standard_Character, 8);
575 Set_Elem_Alignment (Standard_Character);
576
577 Set_Has_Pragma_Ordered (Standard_Character);
578 Set_Is_Unsigned_Type (Standard_Character);
579 Set_Is_Character_Type (Standard_Character);
580 Set_Is_Known_Valid (Standard_Character);
581 Set_Size_Known_At_Compile_Time (Standard_Character);
582
583 -- Create the bounds for type Character
584
585 R_Node := New_Node (N_Range, Stloc);
586
587 -- Low bound for type Character (Standard.Nul)
588
589 B_Node := New_Node (N_Character_Literal, Stloc);
590 Set_Is_Static_Expression (B_Node);
591 Set_Chars (B_Node, No_Name);
592 Set_Char_Literal_Value (B_Node, Uint_0);
593 Set_Entity (B_Node, Empty);
594 Set_Etype (B_Node, Standard_Character);
595 Set_Low_Bound (R_Node, B_Node);
596
597 -- High bound for type Character
598
599 B_Node := New_Node (N_Character_Literal, Stloc);
600 Set_Is_Static_Expression (B_Node);
601 Set_Chars (B_Node, No_Name);
602 Set_Char_Literal_Value (B_Node, UI_From_Int (16#FF#));
603 Set_Entity (B_Node, Empty);
604 Set_Etype (B_Node, Standard_Character);
605 Set_High_Bound (R_Node, B_Node);
606
607 Set_Scalar_Range (Standard_Character, R_Node);
608 Set_Etype (R_Node, Standard_Character);
609 Set_Parent (R_Node, Standard_Character);
610
611 -- Create type definition for type Wide_Character. Note that we do not
612 -- set the Literals field, since type Wide_Character is handled with
613 -- special routines that do not need a literal list.
614
615 Tdef_Node := New_Node (N_Enumeration_Type_Definition, Stloc);
616 Set_Type_Definition (Parent (Standard_Wide_Character), Tdef_Node);
617
618 Set_Ekind (Standard_Wide_Character, E_Enumeration_Type);
619 Set_Etype (Standard_Wide_Character, Standard_Wide_Character);
620 Init_Size (Standard_Wide_Character, Standard_Wide_Character_Size);
621
622 Set_Elem_Alignment (Standard_Wide_Character);
623 Set_Has_Pragma_Ordered (Standard_Wide_Character);
624 Set_Is_Unsigned_Type (Standard_Wide_Character);
625 Set_Is_Character_Type (Standard_Wide_Character);
626 Set_Is_Known_Valid (Standard_Wide_Character);
627 Set_Size_Known_At_Compile_Time (Standard_Wide_Character);
628
629 -- Create the bounds for type Wide_Character
630
631 R_Node := New_Node (N_Range, Stloc);
632
633 -- Low bound for type Wide_Character
634
635 B_Node := New_Node (N_Character_Literal, Stloc);
636 Set_Is_Static_Expression (B_Node);
637 Set_Chars (B_Node, No_Name); -- ???
638 Set_Char_Literal_Value (B_Node, Uint_0);
639 Set_Entity (B_Node, Empty);
640 Set_Etype (B_Node, Standard_Wide_Character);
641 Set_Low_Bound (R_Node, B_Node);
642
643 -- High bound for type Wide_Character
644
645 B_Node := New_Node (N_Character_Literal, Stloc);
646 Set_Is_Static_Expression (B_Node);
647 Set_Chars (B_Node, No_Name); -- ???
648 Set_Char_Literal_Value (B_Node, UI_From_Int (16#FFFF#));
649 Set_Entity (B_Node, Empty);
650 Set_Etype (B_Node, Standard_Wide_Character);
651 Set_High_Bound (R_Node, B_Node);
652
653 Set_Scalar_Range (Standard_Wide_Character, R_Node);
654 Set_Etype (R_Node, Standard_Wide_Character);
655 Set_Parent (R_Node, Standard_Wide_Character);
656
657 -- Create type definition for type Wide_Wide_Character. Note that we
658 -- do not set the Literals field, since type Wide_Wide_Character is
659 -- handled with special routines that do not need a literal list.
660
661 Tdef_Node := New_Node (N_Enumeration_Type_Definition, Stloc);
662 Set_Type_Definition (Parent (Standard_Wide_Wide_Character), Tdef_Node);
663
664 Set_Ekind (Standard_Wide_Wide_Character, E_Enumeration_Type);
665 Set_Etype (Standard_Wide_Wide_Character,
666 Standard_Wide_Wide_Character);
667 Init_Size (Standard_Wide_Wide_Character,
668 Standard_Wide_Wide_Character_Size);
669
670 Set_Elem_Alignment (Standard_Wide_Wide_Character);
671 Set_Has_Pragma_Ordered (Standard_Wide_Wide_Character);
672 Set_Is_Unsigned_Type (Standard_Wide_Wide_Character);
673 Set_Is_Character_Type (Standard_Wide_Wide_Character);
674 Set_Is_Known_Valid (Standard_Wide_Wide_Character);
675 Set_Size_Known_At_Compile_Time (Standard_Wide_Wide_Character);
676 Set_Is_Ada_2005_Only (Standard_Wide_Wide_Character);
677
678 -- Create the bounds for type Wide_Wide_Character
679
680 R_Node := New_Node (N_Range, Stloc);
681
682 -- Low bound for type Wide_Wide_Character
683
684 B_Node := New_Node (N_Character_Literal, Stloc);
685 Set_Is_Static_Expression (B_Node);
686 Set_Chars (B_Node, No_Name); -- ???
687 Set_Char_Literal_Value (B_Node, Uint_0);
688 Set_Entity (B_Node, Empty);
689 Set_Etype (B_Node, Standard_Wide_Wide_Character);
690 Set_Low_Bound (R_Node, B_Node);
691
692 -- High bound for type Wide_Wide_Character
693
694 B_Node := New_Node (N_Character_Literal, Stloc);
695 Set_Is_Static_Expression (B_Node);
696 Set_Chars (B_Node, No_Name); -- ???
697 Set_Char_Literal_Value (B_Node, UI_From_Int (16#7FFF_FFFF#));
698 Set_Entity (B_Node, Empty);
699 Set_Etype (B_Node, Standard_Wide_Wide_Character);
700 Set_High_Bound (R_Node, B_Node);
701
702 Set_Scalar_Range (Standard_Wide_Wide_Character, R_Node);
703 Set_Etype (R_Node, Standard_Wide_Wide_Character);
704 Set_Parent (R_Node, Standard_Wide_Wide_Character);
705
706 -- Create type definition node for type String
707
708 Tdef_Node := New_Node (N_Unconstrained_Array_Definition, Stloc);
709
710 declare
711 CompDef_Node : Node_Id;
712 begin
713 CompDef_Node := New_Node (N_Component_Definition, Stloc);
714 Set_Aliased_Present (CompDef_Node, False);
715 Set_Access_Definition (CompDef_Node, Empty);
716 Set_Subtype_Indication (CompDef_Node, Identifier_For (S_Character));
717 Set_Component_Definition (Tdef_Node, CompDef_Node);
718 end;
719
720 Set_Subtype_Marks (Tdef_Node, New_List);
721 Append (Identifier_For (S_Positive), Subtype_Marks (Tdef_Node));
722 Set_Type_Definition (Parent (Standard_String), Tdef_Node);
723
724 Set_Ekind (Standard_String, E_String_Type);
725 Set_Etype (Standard_String, Standard_String);
726 Set_Component_Type (Standard_String, Standard_Character);
727 Set_Component_Size (Standard_String, Uint_8);
728 Init_Size_Align (Standard_String);
729 Set_Alignment (Standard_String, Uint_1);
730 Pack_String_Type (Standard_String);
731
732 -- On targets where a storage unit is larger than a byte (such as AAMP),
733 -- pragma Pack has a real effect on the representation of type String,
734 -- and the type must be marked as having a nonstandard representation.
735
736 if System_Storage_Unit > Uint_8 then
737 Set_Has_Non_Standard_Rep (Standard_String);
738 Set_Has_Pragma_Pack (Standard_String);
739 end if;
740
741 -- Set index type of String
742
743 E_Id := First
744 (Subtype_Marks (Type_Definition (Parent (Standard_String))));
745 Set_First_Index (Standard_String, E_Id);
746 Set_Entity (E_Id, Standard_Positive);
747 Set_Etype (E_Id, Standard_Positive);
748
749 -- Create type definition node for type Wide_String
750
751 Tdef_Node := New_Node (N_Unconstrained_Array_Definition, Stloc);
752
753 declare
754 CompDef_Node : Node_Id;
755 begin
756 CompDef_Node := New_Node (N_Component_Definition, Stloc);
757 Set_Aliased_Present (CompDef_Node, False);
758 Set_Access_Definition (CompDef_Node, Empty);
759 Set_Subtype_Indication (CompDef_Node,
760 Identifier_For (S_Wide_Character));
761 Set_Component_Definition (Tdef_Node, CompDef_Node);
762 end;
763
764 Set_Subtype_Marks (Tdef_Node, New_List);
765 Append (Identifier_For (S_Positive), Subtype_Marks (Tdef_Node));
766 Set_Type_Definition (Parent (Standard_Wide_String), Tdef_Node);
767
768 Set_Ekind (Standard_Wide_String, E_String_Type);
769 Set_Etype (Standard_Wide_String, Standard_Wide_String);
770 Set_Component_Type (Standard_Wide_String, Standard_Wide_Character);
771 Set_Component_Size (Standard_Wide_String, Uint_16);
772 Init_Size_Align (Standard_Wide_String);
773 Pack_String_Type (Standard_Wide_String);
774
775 -- Set index type of Wide_String
776
777 E_Id := First
778 (Subtype_Marks (Type_Definition (Parent (Standard_Wide_String))));
779 Set_First_Index (Standard_Wide_String, E_Id);
780 Set_Entity (E_Id, Standard_Positive);
781 Set_Etype (E_Id, Standard_Positive);
782
783 -- Create type definition node for type Wide_Wide_String
784
785 Tdef_Node := New_Node (N_Unconstrained_Array_Definition, Stloc);
786
787 declare
788 CompDef_Node : Node_Id;
789 begin
790 CompDef_Node := New_Node (N_Component_Definition, Stloc);
791 Set_Aliased_Present (CompDef_Node, False);
792 Set_Access_Definition (CompDef_Node, Empty);
793 Set_Subtype_Indication (CompDef_Node,
794 Identifier_For (S_Wide_Wide_Character));
795 Set_Component_Definition (Tdef_Node, CompDef_Node);
796 end;
797
798 Set_Subtype_Marks (Tdef_Node, New_List);
799 Append (Identifier_For (S_Positive), Subtype_Marks (Tdef_Node));
800 Set_Type_Definition (Parent (Standard_Wide_Wide_String), Tdef_Node);
801
802 Set_Ekind (Standard_Wide_Wide_String, E_String_Type);
803 Set_Etype (Standard_Wide_Wide_String,
804 Standard_Wide_Wide_String);
805 Set_Component_Type (Standard_Wide_Wide_String,
806 Standard_Wide_Wide_Character);
807 Set_Component_Size (Standard_Wide_Wide_String, Uint_32);
808 Init_Size_Align (Standard_Wide_Wide_String);
809 Set_Is_Ada_2005_Only (Standard_Wide_Wide_String);
810 Pack_String_Type (Standard_Wide_Wide_String);
811
812 -- Set index type of Wide_Wide_String
813
814 E_Id := First
815 (Subtype_Marks (Type_Definition (Parent (Standard_Wide_Wide_String))));
816 Set_First_Index (Standard_Wide_Wide_String, E_Id);
817 Set_Entity (E_Id, Standard_Positive);
818 Set_Etype (E_Id, Standard_Positive);
819
820 -- Setup entity for Naturalend Create_Standard;
821
822 Set_Ekind (Standard_Natural, E_Signed_Integer_Subtype);
823 Set_Etype (Standard_Natural, Base_Type (Standard_Integer));
824 Init_Esize (Standard_Natural, Standard_Integer_Size);
825 Init_RM_Size (Standard_Natural, Standard_Integer_Size - 1);
826 Set_Elem_Alignment (Standard_Natural);
827 Set_Size_Known_At_Compile_Time
828 (Standard_Natural);
829 Set_Integer_Bounds (Standard_Natural,
830 Typ => Base_Type (Standard_Integer),
831 Lb => Uint_0,
832 Hb => Intval (High_Bound (Scalar_Range (Standard_Integer))));
833 Set_Is_Constrained (Standard_Natural);
834
835 -- Setup entity for Positive
836
837 Set_Ekind (Standard_Positive, E_Signed_Integer_Subtype);
838 Set_Etype (Standard_Positive, Base_Type (Standard_Integer));
839 Init_Esize (Standard_Positive, Standard_Integer_Size);
840 Init_RM_Size (Standard_Positive, Standard_Integer_Size - 1);
841 Set_Elem_Alignment (Standard_Positive);
842
843 Set_Size_Known_At_Compile_Time (Standard_Positive);
844
845 Set_Integer_Bounds (Standard_Positive,
846 Typ => Base_Type (Standard_Integer),
847 Lb => Uint_1,
848 Hb => Intval (High_Bound (Scalar_Range (Standard_Integer))));
849 Set_Is_Constrained (Standard_Positive);
850
851 -- Create declaration for package ASCII
852
853 Decl := New_Node (N_Package_Declaration, Stloc);
854 Append (Decl, Decl_S);
855
856 Pspec := New_Node (N_Package_Specification, Stloc);
857 Set_Specification (Decl, Pspec);
858
859 Set_Defining_Unit_Name (Pspec, Standard_Entity (S_ASCII));
860 Set_Ekind (Standard_Entity (S_ASCII), E_Package);
861 Set_Visible_Declarations (Pspec, Decl_A);
862
863 -- Create control character definitions in package ASCII. Note that
864 -- the character literal entries created here correspond to literal
865 -- values that are impossible in the source, but can be represented
866 -- internally with no difficulties.
867
868 Ccode := 16#00#;
869
870 for S in S_ASCII_Names loop
871 Decl := New_Node (N_Object_Declaration, Staloc);
872 Set_Constant_Present (Decl, True);
873
874 declare
875 A_Char : constant Entity_Id := Standard_Entity (S);
876 Expr_Decl : Node_Id;
877
878 begin
879 Set_Sloc (A_Char, Staloc);
880 Set_Ekind (A_Char, E_Constant);
881 Set_Never_Set_In_Source (A_Char, True);
882 Set_Is_True_Constant (A_Char, True);
883 Set_Etype (A_Char, Standard_Character);
884 Set_Scope (A_Char, Standard_Entity (S_ASCII));
885 Set_Is_Immediately_Visible (A_Char, False);
886 Set_Is_Public (A_Char, True);
887 Set_Is_Known_Valid (A_Char, True);
888
889 Append_Entity (A_Char, Standard_Entity (S_ASCII));
890 Set_Defining_Identifier (Decl, A_Char);
891
892 Set_Object_Definition (Decl, Identifier_For (S_Character));
893 Expr_Decl := New_Node (N_Character_Literal, Staloc);
894 Set_Expression (Decl, Expr_Decl);
895
896 Set_Is_Static_Expression (Expr_Decl);
897 Set_Chars (Expr_Decl, No_Name);
898 Set_Etype (Expr_Decl, Standard_Character);
899 Set_Char_Literal_Value (Expr_Decl, UI_From_Int (Int (Ccode)));
900 end;
901
902 Append (Decl, Decl_A);
903
904 -- Increment character code, dealing with non-contiguities
905
906 Ccode := Ccode + 1;
907
908 if Ccode = 16#20# then
909 Ccode := 16#21#;
910 elsif Ccode = 16#27# then
911 Ccode := 16#3A#;
912 elsif Ccode = 16#3C# then
913 Ccode := 16#3F#;
914 elsif Ccode = 16#41# then
915 Ccode := 16#5B#;
916 end if;
917 end loop;
918
919 -- Create semantic phase entities
920
921 Standard_Void_Type := New_Standard_Entity;
922 Set_Ekind (Standard_Void_Type, E_Void);
923 Set_Etype (Standard_Void_Type, Standard_Void_Type);
924 Set_Scope (Standard_Void_Type, Standard_Standard);
925 Make_Name (Standard_Void_Type, "_void_type");
926
927 -- The type field of packages is set to void
928
929 Set_Etype (Standard_Standard, Standard_Void_Type);
930 Set_Etype (Standard_ASCII, Standard_Void_Type);
931
932 -- Standard_A_String is actually used in generated code, so it has a
933 -- type name that is reasonable, but does not overlap any Ada name.
934
935 Standard_A_String := New_Standard_Entity;
936 Set_Ekind (Standard_A_String, E_Access_Type);
937 Set_Scope (Standard_A_String, Standard_Standard);
938 Set_Etype (Standard_A_String, Standard_A_String);
939
940 if Debug_Flag_6 then
941 Init_Size (Standard_A_String, System_Address_Size);
942 else
943 Init_Size (Standard_A_String, System_Address_Size * 2);
944 end if;
945
946 Init_Alignment (Standard_A_String);
947
948 Set_Directly_Designated_Type
949 (Standard_A_String, Standard_String);
950 Make_Name (Standard_A_String, "access_string");
951
952 Standard_A_Char := New_Standard_Entity;
953 Set_Ekind (Standard_A_Char, E_Access_Type);
954 Set_Scope (Standard_A_Char, Standard_Standard);
955 Set_Etype (Standard_A_Char, Standard_A_String);
956 Init_Size (Standard_A_Char, System_Address_Size);
957 Set_Elem_Alignment (Standard_A_Char);
958
959 Set_Directly_Designated_Type (Standard_A_Char, Standard_Character);
960 Make_Name (Standard_A_Char, "access_character");
961
962 -- Standard_Debug_Renaming_Type is used for the special objects created
963 -- to encode the names occurring in renaming declarations for use by the
964 -- debugger (see exp_dbug.adb). The type is a zero-sized subtype of
965 -- Standard.Integer.
966
967 Standard_Debug_Renaming_Type := New_Standard_Entity;
968
969 Set_Ekind (Standard_Debug_Renaming_Type, E_Signed_Integer_Subtype);
970 Set_Scope (Standard_Debug_Renaming_Type, Standard_Standard);
971 Set_Etype (Standard_Debug_Renaming_Type, Base_Type (Standard_Integer));
972 Init_Esize (Standard_Debug_Renaming_Type, 0);
973 Init_RM_Size (Standard_Debug_Renaming_Type, 0);
974 Set_Size_Known_At_Compile_Time (Standard_Debug_Renaming_Type);
975 Set_Integer_Bounds (Standard_Debug_Renaming_Type,
976 Typ => Base_Type (Standard_Debug_Renaming_Type),
977 Lb => Uint_1,
978 Hb => Uint_0);
979 Set_Is_Constrained (Standard_Debug_Renaming_Type);
980 Set_Has_Size_Clause (Standard_Debug_Renaming_Type);
981
982 Make_Name (Standard_Debug_Renaming_Type, "_renaming_type");
983
984 -- Note on type names. The type names for the following special types
985 -- are constructed so that they will look reasonable should they ever
986 -- appear in error messages etc, although in practice the use of the
987 -- special insertion character } for types results in special handling
988 -- of these type names in any case. The blanks in these names would
989 -- trouble in Gigi, but that's OK here, since none of these types
990 -- should ever get through to Gigi! Attributes of these types are
991 -- filled out to minimize problems with cascaded errors (for example,
992 -- Any_Integer is given reasonable and consistent type and size values)
993
994 Any_Type := New_Standard_Entity;
995 Decl := New_Node (N_Full_Type_Declaration, Stloc);
996 Set_Defining_Identifier (Decl, Any_Type);
997 Set_Scope (Any_Type, Standard_Standard);
998 Build_Signed_Integer_Type (Any_Type, Standard_Integer_Size);
999 Make_Name (Any_Type, "any type");
1000
1001 Any_Id := New_Standard_Entity;
1002 Set_Ekind (Any_Id, E_Variable);
1003 Set_Scope (Any_Id, Standard_Standard);
1004 Set_Etype (Any_Id, Any_Type);
1005 Init_Esize (Any_Id);
1006 Init_Alignment (Any_Id);
1007 Make_Name (Any_Id, "any id");
1008
1009 Any_Access := New_Standard_Entity;
1010 Set_Ekind (Any_Access, E_Access_Type);
1011 Set_Scope (Any_Access, Standard_Standard);
1012 Set_Etype (Any_Access, Any_Access);
1013 Init_Size (Any_Access, System_Address_Size);
1014 Set_Elem_Alignment (Any_Access);
1015 Make_Name (Any_Access, "an access type");
1016
1017 Any_Character := New_Standard_Entity;
1018 Set_Ekind (Any_Character, E_Enumeration_Type);
1019 Set_Scope (Any_Character, Standard_Standard);
1020 Set_Etype (Any_Character, Any_Character);
1021 Set_Is_Unsigned_Type (Any_Character);
1022 Set_Is_Character_Type (Any_Character);
1023 Init_Esize (Any_Character, Standard_Character_Size);
1024 Init_RM_Size (Any_Character, 8);
1025 Set_Elem_Alignment (Any_Character);
1026 Set_Scalar_Range (Any_Character, Scalar_Range (Standard_Character));
1027 Make_Name (Any_Character, "a character type");
1028
1029 Any_Array := New_Standard_Entity;
1030 Set_Ekind (Any_Array, E_String_Type);
1031 Set_Scope (Any_Array, Standard_Standard);
1032 Set_Etype (Any_Array, Any_Array);
1033 Set_Component_Type (Any_Array, Any_Character);
1034 Init_Size_Align (Any_Array);
1035 Make_Name (Any_Array, "an array type");
1036
1037 Any_Boolean := New_Standard_Entity;
1038 Set_Ekind (Any_Boolean, E_Enumeration_Type);
1039 Set_Scope (Any_Boolean, Standard_Standard);
1040 Set_Etype (Any_Boolean, Standard_Boolean);
1041 Init_Esize (Any_Boolean, Standard_Character_Size);
1042 Init_RM_Size (Any_Boolean, 1);
1043 Set_Elem_Alignment (Any_Boolean);
1044 Set_Is_Unsigned_Type (Any_Boolean);
1045 Set_Scalar_Range (Any_Boolean, Scalar_Range (Standard_Boolean));
1046 Make_Name (Any_Boolean, "a boolean type");
1047
1048 Any_Composite := New_Standard_Entity;
1049 Set_Ekind (Any_Composite, E_Array_Type);
1050 Set_Scope (Any_Composite, Standard_Standard);
1051 Set_Etype (Any_Composite, Any_Composite);
1052 Set_Component_Size (Any_Composite, Uint_0);
1053 Set_Component_Type (Any_Composite, Standard_Integer);
1054 Init_Size_Align (Any_Composite);
1055 Make_Name (Any_Composite, "a composite type");
1056
1057 Any_Discrete := New_Standard_Entity;
1058 Set_Ekind (Any_Discrete, E_Signed_Integer_Type);
1059 Set_Scope (Any_Discrete, Standard_Standard);
1060 Set_Etype (Any_Discrete, Any_Discrete);
1061 Init_Size (Any_Discrete, Standard_Integer_Size);
1062 Set_Elem_Alignment (Any_Discrete);
1063 Make_Name (Any_Discrete, "a discrete type");
1064
1065 Any_Fixed := New_Standard_Entity;
1066 Set_Ekind (Any_Fixed, E_Ordinary_Fixed_Point_Type);
1067 Set_Scope (Any_Fixed, Standard_Standard);
1068 Set_Etype (Any_Fixed, Any_Fixed);
1069 Init_Size (Any_Fixed, Standard_Integer_Size);
1070 Set_Elem_Alignment (Any_Fixed);
1071 Make_Name (Any_Fixed, "a fixed-point type");
1072
1073 Any_Integer := New_Standard_Entity;
1074 Set_Ekind (Any_Integer, E_Signed_Integer_Type);
1075 Set_Scope (Any_Integer, Standard_Standard);
1076 Set_Etype (Any_Integer, Standard_Long_Long_Integer);
1077 Init_Size (Any_Integer, Standard_Long_Long_Integer_Size);
1078 Set_Elem_Alignment (Any_Integer);
1079
1080 Set_Integer_Bounds
1081 (Any_Integer,
1082 Typ => Base_Type (Standard_Integer),
1083 Lb => Uint_0,
1084 Hb => Intval (High_Bound (Scalar_Range (Standard_Integer))));
1085 Make_Name (Any_Integer, "an integer type");
1086
1087 Any_Modular := New_Standard_Entity;
1088 Set_Ekind (Any_Modular, E_Modular_Integer_Type);
1089 Set_Scope (Any_Modular, Standard_Standard);
1090 Set_Etype (Any_Modular, Standard_Long_Long_Integer);
1091 Init_Size (Any_Modular, Standard_Long_Long_Integer_Size);
1092 Set_Elem_Alignment (Any_Modular);
1093 Set_Is_Unsigned_Type (Any_Modular);
1094 Make_Name (Any_Modular, "a modular type");
1095
1096 Any_Numeric := New_Standard_Entity;
1097 Set_Ekind (Any_Numeric, E_Signed_Integer_Type);
1098 Set_Scope (Any_Numeric, Standard_Standard);
1099 Set_Etype (Any_Numeric, Standard_Long_Long_Integer);
1100 Init_Size (Any_Numeric, Standard_Long_Long_Integer_Size);
1101 Set_Elem_Alignment (Any_Numeric);
1102 Make_Name (Any_Numeric, "a numeric type");
1103
1104 Any_Real := New_Standard_Entity;
1105 Set_Ekind (Any_Real, E_Floating_Point_Type);
1106 Set_Scope (Any_Real, Standard_Standard);
1107 Set_Etype (Any_Real, Standard_Long_Long_Float);
1108 Init_Size (Any_Real, Standard_Long_Long_Float_Size);
1109 Set_Elem_Alignment (Any_Real);
1110 Make_Name (Any_Real, "a real type");
1111
1112 Any_Scalar := New_Standard_Entity;
1113 Set_Ekind (Any_Scalar, E_Signed_Integer_Type);
1114 Set_Scope (Any_Scalar, Standard_Standard);
1115 Set_Etype (Any_Scalar, Any_Scalar);
1116 Init_Size (Any_Scalar, Standard_Integer_Size);
1117 Set_Elem_Alignment (Any_Scalar);
1118 Make_Name (Any_Scalar, "a scalar type");
1119
1120 Any_String := New_Standard_Entity;
1121 Set_Ekind (Any_String, E_String_Type);
1122 Set_Scope (Any_String, Standard_Standard);
1123 Set_Etype (Any_String, Any_String);
1124 Set_Component_Type (Any_String, Any_Character);
1125 Init_Size_Align (Any_String);
1126 Make_Name (Any_String, "a string type");
1127
1128 declare
1129 Index : Node_Id;
1130
1131 begin
1132 Index :=
1133 Make_Range (Stloc,
1134 Low_Bound => Make_Integer (Uint_0),
1135 High_Bound => Make_Integer (Uint_2 ** Standard_Integer_Size));
1136 Set_Etype (Index, Standard_Integer);
1137 Set_First_Index (Any_String, Index);
1138 end;
1139
1140 Standard_Integer_8 := New_Standard_Entity;
1141 Decl := New_Node (N_Full_Type_Declaration, Stloc);
1142 Set_Defining_Identifier (Decl, Standard_Integer_8);
1143 Make_Name (Standard_Integer_8, "integer_8");
1144 Set_Scope (Standard_Integer_8, Standard_Standard);
1145 Build_Signed_Integer_Type (Standard_Integer_8, 8);
1146
1147 Standard_Integer_16 := New_Standard_Entity;
1148 Decl := New_Node (N_Full_Type_Declaration, Stloc);
1149 Set_Defining_Identifier (Decl, Standard_Integer_16);
1150 Make_Name (Standard_Integer_16, "integer_16");
1151 Set_Scope (Standard_Integer_16, Standard_Standard);
1152 Build_Signed_Integer_Type (Standard_Integer_16, 16);
1153
1154 Standard_Integer_32 := New_Standard_Entity;
1155 Decl := New_Node (N_Full_Type_Declaration, Stloc);
1156 Set_Defining_Identifier (Decl, Standard_Integer_32);
1157 Make_Name (Standard_Integer_32, "integer_32");
1158 Set_Scope (Standard_Integer_32, Standard_Standard);
1159 Build_Signed_Integer_Type (Standard_Integer_32, 32);
1160
1161 Standard_Integer_64 := New_Standard_Entity;
1162 Decl := New_Node (N_Full_Type_Declaration, Stloc);
1163 Set_Defining_Identifier (Decl, Standard_Integer_64);
1164 Make_Name (Standard_Integer_64, "integer_64");
1165 Set_Scope (Standard_Integer_64, Standard_Standard);
1166 Build_Signed_Integer_Type (Standard_Integer_64, 64);
1167
1168 Standard_Unsigned := New_Standard_Entity;
1169 Decl := New_Node (N_Full_Type_Declaration, Stloc);
1170 Set_Defining_Identifier (Decl, Standard_Unsigned);
1171 Make_Name (Standard_Unsigned, "unsigned");
1172
1173 Set_Ekind (Standard_Unsigned, E_Modular_Integer_Type);
1174 Set_Scope (Standard_Unsigned, Standard_Standard);
1175 Set_Etype (Standard_Unsigned, Standard_Unsigned);
1176 Init_Size (Standard_Unsigned, Standard_Integer_Size);
1177 Set_Elem_Alignment (Standard_Unsigned);
1178 Set_Modulus (Standard_Unsigned,
1179 Uint_2 ** Standard_Integer_Size);
1180 Set_Is_Unsigned_Type (Standard_Unsigned);
1181 Set_Size_Known_At_Compile_Time
1182 (Standard_Unsigned);
1183 Set_Is_Known_Valid (Standard_Unsigned, True);
1184
1185 R_Node := New_Node (N_Range, Stloc);
1186 Set_Low_Bound (R_Node, Make_Integer (Uint_0));
1187 Set_High_Bound (R_Node, Make_Integer (Modulus (Standard_Unsigned) - 1));
1188 Set_Etype (Low_Bound (R_Node), Standard_Unsigned);
1189 Set_Etype (High_Bound (R_Node), Standard_Unsigned);
1190 Set_Scalar_Range (Standard_Unsigned, R_Node);
1191
1192 -- Note: universal integer and universal real are constructed as fully
1193 -- formed signed numeric types, with parameters corresponding to the
1194 -- longest runtime types (Long_Long_Integer and Long_Long_Float). This
1195 -- allows Gigi to properly process references to universal types that
1196 -- are not folded at compile time.
1197
1198 Universal_Integer := New_Standard_Entity;
1199 Decl := New_Node (N_Full_Type_Declaration, Stloc);
1200 Set_Defining_Identifier (Decl, Universal_Integer);
1201 Make_Name (Universal_Integer, "universal_integer");
1202 Set_Scope (Universal_Integer, Standard_Standard);
1203 Build_Signed_Integer_Type
1204 (Universal_Integer, Standard_Long_Long_Integer_Size);
1205
1206 Universal_Real := New_Standard_Entity;
1207 Decl := New_Node (N_Full_Type_Declaration, Stloc);
1208 Set_Defining_Identifier (Decl, Universal_Real);
1209 Make_Name (Universal_Real, "universal_real");
1210 Set_Scope (Universal_Real, Standard_Standard);
1211 Build_Float_Type
1212 (Universal_Real,
1213 Standard_Long_Long_Float_Size,
1214 Standard_Long_Long_Float_Digits);
1215
1216 -- Note: universal fixed, unlike universal integer and universal real,
1217 -- is never used at runtime, so it does not need to have bounds set.
1218
1219 Universal_Fixed := New_Standard_Entity;
1220 Decl := New_Node (N_Full_Type_Declaration, Stloc);
1221 Set_Defining_Identifier (Decl, Universal_Fixed);
1222 Make_Name (Universal_Fixed, "universal_fixed");
1223 Set_Ekind (Universal_Fixed, E_Ordinary_Fixed_Point_Type);
1224 Set_Etype (Universal_Fixed, Universal_Fixed);
1225 Set_Scope (Universal_Fixed, Standard_Standard);
1226 Init_Size (Universal_Fixed, Standard_Long_Long_Integer_Size);
1227 Set_Elem_Alignment (Universal_Fixed);
1228 Set_Size_Known_At_Compile_Time
1229 (Universal_Fixed);
1230
1231 -- Create type declaration for Duration, using a 64-bit size. The
1232 -- delta and size values depend on the mode set in system.ads.
1233
1234 Build_Duration : declare
1235 Dlo : Uint;
1236 Dhi : Uint;
1237 Delta_Val : Ureal;
1238
1239 begin
1240 -- In 32 bit mode, the size is 32 bits, and the delta and
1241 -- small values are set to 20 milliseconds (20.0**(10.0**(-3)).
1242
1243 if Duration_32_Bits_On_Target then
1244 Dlo := Intval (Type_Low_Bound (Standard_Integer_32));
1245 Dhi := Intval (Type_High_Bound (Standard_Integer_32));
1246 Delta_Val := UR_From_Components (UI_From_Int (20), Uint_3, 10);
1247
1248 -- In standard 64-bit mode, the size is 64-bits and the delta and
1249 -- small values are set to nanoseconds (1.0**(10.0**(-9))
1250
1251 else
1252 Dlo := Intval (Type_Low_Bound (Standard_Integer_64));
1253 Dhi := Intval (Type_High_Bound (Standard_Integer_64));
1254 Delta_Val := UR_From_Components (Uint_1, Uint_9, 10);
1255 end if;
1256
1257 Tdef_Node := Make_Ordinary_Fixed_Point_Definition (Stloc,
1258 Delta_Expression => Make_Real_Literal (Stloc, Delta_Val),
1259 Real_Range_Specification =>
1260 Make_Real_Range_Specification (Stloc,
1261 Low_Bound => Make_Real_Literal (Stloc,
1262 Realval => Dlo * Delta_Val),
1263 High_Bound => Make_Real_Literal (Stloc,
1264 Realval => Dhi * Delta_Val)));
1265
1266 Set_Type_Definition (Parent (Standard_Duration), Tdef_Node);
1267
1268 Set_Ekind (Standard_Duration, E_Ordinary_Fixed_Point_Type);
1269 Set_Etype (Standard_Duration, Standard_Duration);
1270
1271 if Duration_32_Bits_On_Target then
1272 Init_Size (Standard_Duration, 32);
1273 else
1274 Init_Size (Standard_Duration, 64);
1275 end if;
1276
1277 Set_Elem_Alignment (Standard_Duration);
1278 Set_Delta_Value (Standard_Duration, Delta_Val);
1279 Set_Small_Value (Standard_Duration, Delta_Val);
1280 Set_Scalar_Range (Standard_Duration,
1281 Real_Range_Specification
1282 (Type_Definition (Parent (Standard_Duration))));
1283
1284 -- Normally it does not matter that nodes in package Standard are
1285 -- not marked as analyzed. The Scalar_Range of the fixed-point
1286 -- type Standard_Duration is an exception, because of the special
1287 -- test made in Freeze.Freeze_Fixed_Point_Type.
1288
1289 Set_Analyzed (Scalar_Range (Standard_Duration));
1290
1291 Set_Etype (Type_High_Bound (Standard_Duration), Standard_Duration);
1292 Set_Etype (Type_Low_Bound (Standard_Duration), Standard_Duration);
1293
1294 Set_Is_Static_Expression (Type_High_Bound (Standard_Duration));
1295 Set_Is_Static_Expression (Type_Low_Bound (Standard_Duration));
1296
1297 Set_Corresponding_Integer_Value
1298 (Type_High_Bound (Standard_Duration), Dhi);
1299
1300 Set_Corresponding_Integer_Value
1301 (Type_Low_Bound (Standard_Duration), Dlo);
1302
1303 Set_Size_Known_At_Compile_Time (Standard_Duration);
1304 end Build_Duration;
1305
1306 -- Build standard exception type. Note that the type name here is
1307 -- actually used in the generated code, so it must be set correctly
1308
1309 -- ??? Also note that the Import_Code component is now declared
1310 -- as a System.Standard_Library.Exception_Code to enforce run-time
1311 -- library implementation consistency. It's too early here to resort
1312 -- to rtsfind to get the proper node for that type, so we use the
1313 -- closest possible available type node at hand instead. We should
1314 -- probably be fixing this up at some point.
1315
1316 Standard_Exception_Type := New_Standard_Entity;
1317 Set_Ekind (Standard_Exception_Type, E_Record_Type);
1318 Set_Etype (Standard_Exception_Type, Standard_Exception_Type);
1319 Set_Scope (Standard_Exception_Type, Standard_Standard);
1320 Set_Stored_Constraint
1321 (Standard_Exception_Type, No_Elist);
1322 Init_Size_Align (Standard_Exception_Type);
1323 Set_Size_Known_At_Compile_Time
1324 (Standard_Exception_Type, True);
1325 Make_Name (Standard_Exception_Type, "exception");
1326
1327 Make_Component
1328 (Standard_Exception_Type, Standard_Boolean, "Not_Handled_By_Others");
1329 Make_Component
1330 (Standard_Exception_Type, Standard_Character, "Lang");
1331 Make_Component
1332 (Standard_Exception_Type, Standard_Natural, "Name_Length");
1333 Make_Component
1334 (Standard_Exception_Type, Standard_A_Char, "Full_Name");
1335 Make_Component
1336 (Standard_Exception_Type, Standard_A_Char, "HTable_Ptr");
1337 Make_Component
1338 (Standard_Exception_Type, Standard_Unsigned, "Import_Code");
1339 Make_Component
1340 (Standard_Exception_Type, Standard_A_Char, "Raise_Hook");
1341
1342 -- Build tree for record declaration, for use by the back-end
1343
1344 declare
1345 Comp_List : List_Id;
1346 Comp : Entity_Id;
1347
1348 begin
1349 Comp := First_Entity (Standard_Exception_Type);
1350 Comp_List := New_List;
1351 while Present (Comp) loop
1352 Append (
1353 Make_Component_Declaration (Stloc,
1354 Defining_Identifier => Comp,
1355 Component_Definition =>
1356 Make_Component_Definition (Stloc,
1357 Aliased_Present => False,
1358 Subtype_Indication => New_Occurrence_Of (Etype (Comp),
1359 Stloc))),
1360 Comp_List);
1361
1362 Next_Entity (Comp);
1363 end loop;
1364
1365 Decl := Make_Full_Type_Declaration (Stloc,
1366 Defining_Identifier => Standard_Exception_Type,
1367 Type_Definition =>
1368 Make_Record_Definition (Stloc,
1369 End_Label => Empty,
1370 Component_List =>
1371 Make_Component_List (Stloc,
1372 Component_Items => Comp_List)));
1373 end;
1374
1375 Append (Decl, Decl_S);
1376
1377 Layout_Type (Standard_Exception_Type);
1378
1379 -- Create declarations of standard exceptions
1380
1381 Build_Exception (S_Constraint_Error);
1382 Build_Exception (S_Program_Error);
1383 Build_Exception (S_Storage_Error);
1384 Build_Exception (S_Tasking_Error);
1385
1386 -- Numeric_Error is a normal exception in Ada 83, but in Ada 95
1387 -- it is a renaming of Constraint_Error. Is this test too early???
1388
1389 if Ada_Version = Ada_83 then
1390 Build_Exception (S_Numeric_Error);
1391
1392 else
1393 Decl := New_Node (N_Exception_Renaming_Declaration, Stloc);
1394 E_Id := Standard_Entity (S_Numeric_Error);
1395
1396 Set_Ekind (E_Id, E_Exception);
1397 Set_Exception_Code (E_Id, Uint_0);
1398 Set_Etype (E_Id, Standard_Exception_Type);
1399 Set_Is_Public (E_Id);
1400 Set_Renamed_Entity (E_Id, Standard_Entity (S_Constraint_Error));
1401
1402 Set_Defining_Identifier (Decl, E_Id);
1403 Append (Decl, Decl_S);
1404
1405 Ident_Node := New_Node (N_Identifier, Stloc);
1406 Set_Chars (Ident_Node, Chars (Standard_Entity (S_Constraint_Error)));
1407 Set_Entity (Ident_Node, Standard_Entity (S_Constraint_Error));
1408 Set_Name (Decl, Ident_Node);
1409 end if;
1410
1411 -- Abort_Signal is an entity that does not get made visible
1412
1413 Abort_Signal := New_Standard_Entity;
1414 Set_Chars (Abort_Signal, Name_uAbort_Signal);
1415 Set_Ekind (Abort_Signal, E_Exception);
1416 Set_Exception_Code (Abort_Signal, Uint_0);
1417 Set_Etype (Abort_Signal, Standard_Exception_Type);
1418 Set_Scope (Abort_Signal, Standard_Standard);
1419 Set_Is_Public (Abort_Signal, True);
1420 Decl :=
1421 Make_Exception_Declaration (Stloc,
1422 Defining_Identifier => Abort_Signal);
1423
1424 -- Create defining identifiers for shift operator entities. Note
1425 -- that these entities are used only for marking shift operators
1426 -- generated internally, and hence need no structure, just a name
1427 -- and a unique identity.
1428
1429 Standard_Op_Rotate_Left := New_Standard_Entity;
1430 Set_Chars (Standard_Op_Rotate_Left, Name_Rotate_Left);
1431 Set_Ekind (Standard_Op_Rotate_Left, E_Operator);
1432
1433 Standard_Op_Rotate_Right := New_Standard_Entity;
1434 Set_Chars (Standard_Op_Rotate_Right, Name_Rotate_Right);
1435 Set_Ekind (Standard_Op_Rotate_Right, E_Operator);
1436
1437 Standard_Op_Shift_Left := New_Standard_Entity;
1438 Set_Chars (Standard_Op_Shift_Left, Name_Shift_Left);
1439 Set_Ekind (Standard_Op_Shift_Left, E_Operator);
1440
1441 Standard_Op_Shift_Right := New_Standard_Entity;
1442 Set_Chars (Standard_Op_Shift_Right, Name_Shift_Right);
1443 Set_Ekind (Standard_Op_Shift_Right, E_Operator);
1444
1445 Standard_Op_Shift_Right_Arithmetic := New_Standard_Entity;
1446 Set_Chars (Standard_Op_Shift_Right_Arithmetic,
1447 Name_Shift_Right_Arithmetic);
1448 Set_Ekind (Standard_Op_Shift_Right_Arithmetic,
1449 E_Operator);
1450
1451 -- Create standard operator declarations
1452
1453 Create_Operators;
1454
1455 -- Initialize visibility table with entities in Standard
1456
1457 for E in Standard_Entity_Type loop
1458 if Ekind (Standard_Entity (E)) /= E_Operator then
1459 Set_Name_Entity_Id
1460 (Chars (Standard_Entity (E)), Standard_Entity (E));
1461 Set_Homonym (Standard_Entity (E), Empty);
1462 end if;
1463
1464 if E not in S_ASCII_Names then
1465 Set_Scope (Standard_Entity (E), Standard_Standard);
1466 Set_Is_Immediately_Visible (Standard_Entity (E));
1467 end if;
1468 end loop;
1469
1470 -- The predefined package Standard itself does not have a scope;
1471 -- it is the only entity in the system not to have one, and this
1472 -- is what identifies the package to Gigi.
1473
1474 Set_Scope (Standard_Standard, Empty);
1475
1476 -- Set global variables indicating last Id values and version
1477
1478 Last_Standard_Node_Id := Last_Node_Id;
1479 Last_Standard_List_Id := Last_List_Id;
1480
1481 -- The Error node has an Etype of Any_Type to help error recovery
1482
1483 Set_Etype (Error, Any_Type);
1484
1485 -- Print representation of standard if switch set
1486
1487 if Opt.Print_Standard then
1488 Print_Standard;
1489 end if;
1490 end Create_Standard;
1491
1492 ------------------------------------
1493 -- Create_Unconstrained_Base_Type --
1494 ------------------------------------
1495
1496 procedure Create_Unconstrained_Base_Type
1497 (E : Entity_Id;
1498 K : Entity_Kind)
1499 is
1500 New_Ent : constant Entity_Id := New_Copy (E);
1501
1502 begin
1503 Set_Ekind (E, K);
1504 Set_Is_Constrained (E, True);
1505 Set_Is_First_Subtype (E, True);
1506 Set_Etype (E, New_Ent);
1507
1508 Append_Entity (New_Ent, Standard_Standard);
1509 Set_Is_Constrained (New_Ent, False);
1510 Set_Etype (New_Ent, New_Ent);
1511 Set_Is_Known_Valid (New_Ent, True);
1512
1513 if K = E_Signed_Integer_Subtype then
1514 Set_Etype (Low_Bound (Scalar_Range (E)), New_Ent);
1515 Set_Etype (High_Bound (Scalar_Range (E)), New_Ent);
1516 end if;
1517
1518 end Create_Unconstrained_Base_Type;
1519
1520 --------------------
1521 -- Identifier_For --
1522 --------------------
1523
1524 function Identifier_For (S : Standard_Entity_Type) return Node_Id is
1525 Ident_Node : Node_Id;
1526 begin
1527 Ident_Node := New_Node (N_Identifier, Stloc);
1528 Set_Chars (Ident_Node, Chars (Standard_Entity (S)));
1529 return Ident_Node;
1530 end Identifier_For;
1531
1532 --------------------
1533 -- Make_Component --
1534 --------------------
1535
1536 procedure Make_Component
1537 (Rec : Entity_Id;
1538 Typ : Entity_Id;
1539 Nam : String)
1540 is
1541 Id : constant Entity_Id := New_Standard_Entity;
1542
1543 begin
1544 Set_Ekind (Id, E_Component);
1545 Set_Etype (Id, Typ);
1546 Set_Scope (Id, Rec);
1547 Init_Component_Location (Id);
1548
1549 Set_Original_Record_Component (Id, Id);
1550 Make_Name (Id, Nam);
1551 Append_Entity (Id, Rec);
1552 end Make_Component;
1553
1554 -----------------
1555 -- Make_Formal --
1556 -----------------
1557
1558 function Make_Formal
1559 (Typ : Entity_Id;
1560 Formal_Name : String) return Entity_Id
1561 is
1562 Formal : Entity_Id;
1563
1564 begin
1565 Formal := New_Standard_Entity;
1566
1567 Set_Ekind (Formal, E_In_Parameter);
1568 Set_Mechanism (Formal, Default_Mechanism);
1569 Set_Scope (Formal, Standard_Standard);
1570 Set_Etype (Formal, Typ);
1571 Make_Name (Formal, Formal_Name);
1572
1573 return Formal;
1574 end Make_Formal;
1575
1576 ------------------
1577 -- Make_Integer --
1578 ------------------
1579
1580 function Make_Integer (V : Uint) return Node_Id is
1581 N : constant Node_Id := Make_Integer_Literal (Stloc, V);
1582 begin
1583 Set_Is_Static_Expression (N);
1584 return N;
1585 end Make_Integer;
1586
1587 ---------------
1588 -- Make_Name --
1589 ---------------
1590
1591 procedure Make_Name (Id : Entity_Id; Nam : String) is
1592 begin
1593 for J in 1 .. Nam'Length loop
1594 Name_Buffer (J) := Fold_Lower (Nam (Nam'First + (J - 1)));
1595 end loop;
1596
1597 Name_Len := Nam'Length;
1598 Set_Chars (Id, Name_Find);
1599 end Make_Name;
1600
1601 ------------------
1602 -- New_Operator --
1603 ------------------
1604
1605 function New_Operator (Op : Name_Id; Typ : Entity_Id) return Entity_Id is
1606 Ident_Node : Entity_Id;
1607
1608 begin
1609 Ident_Node := Make_Defining_Identifier (Stloc, Op);
1610
1611 Set_Is_Pure (Ident_Node, True);
1612 Set_Ekind (Ident_Node, E_Operator);
1613 Set_Etype (Ident_Node, Typ);
1614 Set_Scope (Ident_Node, Standard_Standard);
1615 Set_Homonym (Ident_Node, Get_Name_Entity_Id (Op));
1616 Set_Convention (Ident_Node, Convention_Intrinsic);
1617
1618 Set_Is_Immediately_Visible (Ident_Node, True);
1619 Set_Is_Intrinsic_Subprogram (Ident_Node, True);
1620
1621 Set_Name_Entity_Id (Op, Ident_Node);
1622 Append_Entity (Ident_Node, Standard_Standard);
1623 return Ident_Node;
1624 end New_Operator;
1625
1626 -------------------------
1627 -- New_Standard_Entity --
1628 -------------------------
1629
1630 function New_Standard_Entity
1631 (New_Node_Kind : Node_Kind := N_Defining_Identifier) return Entity_Id
1632 is
1633 E : constant Entity_Id := New_Entity (New_Node_Kind, Stloc);
1634
1635 begin
1636 -- All standard entities are Pure and Public
1637
1638 Set_Is_Pure (E);
1639 Set_Is_Public (E);
1640
1641 -- All standard entity names are analyzed manually, and are thus
1642 -- frozen as soon as they are created.
1643
1644 Set_Is_Frozen (E);
1645
1646 -- Set debug information required for all standard types
1647
1648 Set_Needs_Debug_Info (E);
1649
1650 -- All standard entities are built with fully qualified names, so
1651 -- set the flag to prevent an abortive attempt at requalification!
1652
1653 Set_Has_Qualified_Name (E);
1654
1655 -- Return newly created entity to be completed by caller
1656
1657 return E;
1658 end New_Standard_Entity;
1659
1660 --------------------
1661 -- Print_Standard --
1662 --------------------
1663
1664 procedure Print_Standard is
1665
1666 procedure P (Item : String) renames Output.Write_Line;
1667 -- Short-hand, since we do a lot of line writes here!
1668
1669 procedure P_Int_Range (Size : Pos);
1670 -- Prints the range of an integer based on its Size
1671
1672 procedure P_Float_Range (Id : Entity_Id);
1673 -- Prints the bounds range for the given float type entity
1674
1675 -------------------
1676 -- P_Float_Range --
1677 -------------------
1678
1679 procedure P_Float_Range (Id : Entity_Id) is
1680 begin
1681 Write_Str (" range ");
1682 UR_Write (Realval (Type_Low_Bound (Id)));
1683 Write_Str (" .. ");
1684 UR_Write (Realval (Type_High_Bound (Id)));
1685 Write_Str (";");
1686 Write_Eol;
1687 end P_Float_Range;
1688
1689 -----------------
1690 -- P_Int_Range --
1691 -----------------
1692
1693 procedure P_Int_Range (Size : Pos) is
1694 begin
1695 Write_Str (" is range -(2 **");
1696 Write_Int (Size - 1);
1697 Write_Str (")");
1698 Write_Str (" .. +(2 **");
1699 Write_Int (Size - 1);
1700 Write_Str (" - 1);");
1701 Write_Eol;
1702 end P_Int_Range;
1703
1704 -- Start of processing for Print_Standard
1705
1706 begin
1707 P ("-- Representation of package Standard");
1708 Write_Eol;
1709 P ("-- This is not accurate Ada, since new base types cannot be ");
1710 P ("-- created, but the listing shows the target dependent");
1711 P ("-- characteristics of the Standard types for this compiler");
1712 Write_Eol;
1713
1714 P ("package Standard is");
1715 P ("pragma Pure (Standard);");
1716 Write_Eol;
1717
1718 P (" type Boolean is (False, True);");
1719 P (" for Boolean'Size use 1;");
1720 P (" for Boolean use (False => 0, True => 1);");
1721 Write_Eol;
1722
1723 -- Integer types
1724
1725 Write_Str (" type Integer");
1726 P_Int_Range (Standard_Integer_Size);
1727 Write_Str (" for Integer'Size use ");
1728 Write_Int (Standard_Integer_Size);
1729 P (";");
1730 Write_Eol;
1731
1732 P (" subtype Natural is Integer range 0 .. Integer'Last;");
1733 P (" subtype Positive is Integer range 1 .. Integer'Last;");
1734 Write_Eol;
1735
1736 Write_Str (" type Short_Short_Integer");
1737 P_Int_Range (Standard_Short_Short_Integer_Size);
1738 Write_Str (" for Short_Short_Integer'Size use ");
1739 Write_Int (Standard_Short_Short_Integer_Size);
1740 P (";");
1741 Write_Eol;
1742
1743 Write_Str (" type Short_Integer");
1744 P_Int_Range (Standard_Short_Integer_Size);
1745 Write_Str (" for Short_Integer'Size use ");
1746 Write_Int (Standard_Short_Integer_Size);
1747 P (";");
1748 Write_Eol;
1749
1750 Write_Str (" type Long_Integer");
1751 P_Int_Range (Standard_Long_Integer_Size);
1752 Write_Str (" for Long_Integer'Size use ");
1753 Write_Int (Standard_Long_Integer_Size);
1754 P (";");
1755 Write_Eol;
1756
1757 Write_Str (" type Long_Long_Integer");
1758 P_Int_Range (Standard_Long_Long_Integer_Size);
1759 Write_Str (" for Long_Long_Integer'Size use ");
1760 Write_Int (Standard_Long_Long_Integer_Size);
1761 P (";");
1762 Write_Eol;
1763
1764 -- Floating point types
1765
1766 Write_Str (" type Short_Float is digits ");
1767 Write_Int (Standard_Short_Float_Digits);
1768 Write_Eol;
1769 P_Float_Range (Standard_Short_Float);
1770 Write_Str (" for Short_Float'Size use ");
1771 Write_Int (Standard_Short_Float_Size);
1772 P (";");
1773 Write_Eol;
1774
1775 Write_Str (" type Float is digits ");
1776 Write_Int (Standard_Float_Digits);
1777 Write_Eol;
1778 P_Float_Range (Standard_Float);
1779 Write_Str (" for Float'Size use ");
1780 Write_Int (Standard_Float_Size);
1781 P (";");
1782 Write_Eol;
1783
1784 Write_Str (" type Long_Float is digits ");
1785 Write_Int (Standard_Long_Float_Digits);
1786 Write_Eol;
1787 P_Float_Range (Standard_Long_Float);
1788 Write_Str (" for Long_Float'Size use ");
1789 Write_Int (Standard_Long_Float_Size);
1790 P (";");
1791 Write_Eol;
1792
1793 Write_Str (" type Long_Long_Float is digits ");
1794 Write_Int (Standard_Long_Long_Float_Digits);
1795 Write_Eol;
1796 P_Float_Range (Standard_Long_Long_Float);
1797 Write_Str (" for Long_Long_Float'Size use ");
1798 Write_Int (Standard_Long_Long_Float_Size);
1799 P (";");
1800 Write_Eol;
1801
1802 P (" type Character is (...)");
1803 Write_Str (" for Character'Size use ");
1804 Write_Int (Standard_Character_Size);
1805 P (";");
1806 P (" -- See RM A.1(35) for details of this type");
1807 Write_Eol;
1808
1809 P (" type Wide_Character is (...)");
1810 Write_Str (" for Wide_Character'Size use ");
1811 Write_Int (Standard_Wide_Character_Size);
1812 P (";");
1813 P (" -- See RM A.1(36) for details of this type");
1814 Write_Eol;
1815
1816 P (" type Wide_Wide_Character is (...)");
1817 Write_Str (" for Wide_Wide_Character'Size use ");
1818 Write_Int (Standard_Wide_Wide_Character_Size);
1819 P (";");
1820 P (" -- See RM A.1(36) for details of this type");
1821
1822 P (" type String is array (Positive range <>) of Character;");
1823 P (" pragma Pack (String);");
1824 Write_Eol;
1825
1826 P (" type Wide_String is array (Positive range <>)" &
1827 " of Wide_Character;");
1828 P (" pragma Pack (Wide_String);");
1829 Write_Eol;
1830
1831 P (" type Wide_Wide_String is array (Positive range <>)" &
1832 " of Wide_Wide_Character;");
1833 P (" pragma Pack (Wide_Wide_String);");
1834 Write_Eol;
1835
1836 -- Here it's OK to use the Duration type of the host compiler since
1837 -- the implementation of Duration in GNAT is target independent.
1838
1839 if Duration_32_Bits_On_Target then
1840 P (" type Duration is delta 0.020");
1841 P (" range -((2 ** 31 - 1) * 0.020) ..");
1842 P (" +((2 ** 31 - 1) * 0.020);");
1843 P (" for Duration'Small use 0.020;");
1844 else
1845 P (" type Duration is delta 0.000000001");
1846 P (" range -((2 ** 63 - 1) * 0.000000001) ..");
1847 P (" +((2 ** 63 - 1) * 0.000000001);");
1848 P (" for Duration'Small use 0.000000001;");
1849 end if;
1850
1851 Write_Eol;
1852
1853 P (" Constraint_Error : exception;");
1854 P (" Program_Error : exception;");
1855 P (" Storage_Error : exception;");
1856 P (" Tasking_Error : exception;");
1857 P (" Numeric_Error : exception renames Constraint_Error;");
1858 Write_Eol;
1859
1860 P ("end Standard;");
1861 end Print_Standard;
1862
1863 ----------------------
1864 -- Set_Float_Bounds --
1865 ----------------------
1866
1867 procedure Set_Float_Bounds (Id : Entity_Id) is
1868 L : Node_Id;
1869 -- Low bound of literal value
1870
1871 H : Node_Id;
1872 -- High bound of literal value
1873
1874 R : Node_Id;
1875 -- Range specification
1876
1877 Radix : constant Uint := Machine_Radix_Value (Id);
1878 Mantissa : constant Uint := Machine_Mantissa_Value (Id);
1879 Emax : constant Uint := Machine_Emax_Value (Id);
1880 Significand : constant Uint := Radix ** Mantissa - 1;
1881 Exponent : constant Uint := Emax - Mantissa;
1882
1883 begin
1884 -- Note: for the call from Cstand to initially create the types in
1885 -- Standard, Float_Rep will never be VAX_Native. Circuitry in Sem_Vfpt
1886 -- will adjust these types appropriately VAX_Native if a pragma
1887 -- Float_Representation (VAX_Float) is used.
1888
1889 H := Make_Float_Literal (Stloc, Radix, Significand, Exponent);
1890 L := Make_Float_Literal (Stloc, Radix, -Significand, Exponent);
1891
1892 Set_Etype (L, Id);
1893 Set_Is_Static_Expression (L);
1894
1895 Set_Etype (H, Id);
1896 Set_Is_Static_Expression (H);
1897
1898 R := New_Node (N_Range, Stloc);
1899 Set_Low_Bound (R, L);
1900 Set_High_Bound (R, H);
1901 Set_Includes_Infinities (R, True);
1902 Set_Scalar_Range (Id, R);
1903 Set_Etype (R, Id);
1904 Set_Parent (R, Id);
1905 end Set_Float_Bounds;
1906
1907 ------------------------
1908 -- Set_Integer_Bounds --
1909 ------------------------
1910
1911 procedure Set_Integer_Bounds
1912 (Id : Entity_Id;
1913 Typ : Entity_Id;
1914 Lb : Uint;
1915 Hb : Uint)
1916 is
1917 L : Node_Id; -- Low bound of literal value
1918 H : Node_Id; -- High bound of literal value
1919 R : Node_Id; -- Range specification
1920
1921 begin
1922 L := Make_Integer (Lb);
1923 H := Make_Integer (Hb);
1924
1925 Set_Etype (L, Typ);
1926 Set_Etype (H, Typ);
1927
1928 R := New_Node (N_Range, Stloc);
1929 Set_Low_Bound (R, L);
1930 Set_High_Bound (R, H);
1931 Set_Scalar_Range (Id, R);
1932 Set_Etype (R, Typ);
1933 Set_Parent (R, Id);
1934 Set_Is_Unsigned_Type (Id, Lb >= 0);
1935 end Set_Integer_Bounds;
1936
1937 end CStand;
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