1 ------------------------------------------------------------------------------
3 -- GNAT COMPILER COMPONENTS --
9 -- Copyright (C) 1992-2007, Free Software Foundation, Inc. --
11 -- GNAT is free software; you can redistribute it and/or modify it under --
12 -- terms of the GNU General Public License as published by the Free Soft- --
13 -- ware Foundation; either version 2, or (at your option) any later ver- --
14 -- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
15 -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
16 -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
17 -- for more details. You should have received a copy of the GNU General --
18 -- Public License distributed with GNAT; see file COPYING. If not, write --
19 -- to the Free Software Foundation, 51 Franklin Street, Fifth Floor, --
20 -- Boston, MA 02110-1301, USA. --
22 -- GNAT was originally developed by the GNAT team at New York University. --
23 -- Extensive contributions were provided by Ada Core Technologies Inc. --
25 ------------------------------------------------------------------------------
27 with Atree; use Atree;
28 with Csets; use Csets;
29 with Debug; use Debug;
30 with Einfo; use Einfo;
31 with Layout; use Layout;
32 with Namet; use Namet;
33 with Nlists; use Nlists;
34 with Nmake; use Nmake;
36 with Output; use Output;
37 with Targparm; use Targparm;
38 with Tbuild; use Tbuild;
39 with Ttypes; use Ttypes;
40 with Ttypef; use Ttypef;
42 with Sem_Mech; use Sem_Mech;
43 with Sem_Util; use Sem_Util;
44 with Sinfo; use Sinfo;
45 with Snames; use Snames;
46 with Stand; use Stand;
47 with Uintp; use Uintp;
48 with Urealp; use Urealp;
50 package body CStand is
52 Stloc : constant Source_Ptr := Standard_Location;
53 Staloc : constant Source_Ptr := Standard_ASCII_Location;
54 -- Standard abbreviations used throughout this package
56 -----------------------
57 -- Local Subprograms --
58 -----------------------
60 procedure Build_Float_Type (E : Entity_Id; Siz : Int; Digs : Int);
61 -- Procedure to build standard predefined float base type. The first
62 -- parameter is the entity for the type, and the second parameter
63 -- is the size in bits. The third parameter is the digits value.
65 procedure Build_Signed_Integer_Type (E : Entity_Id; Siz : Int);
66 -- Procedure to build standard predefined signed integer subtype. The
67 -- first parameter is the entity for the subtype. The second parameter
68 -- is the size in bits. The corresponding base type is not built by
69 -- this routine but instead must be built by the caller where needed.
71 procedure Create_Operators;
72 -- Make entries for each of the predefined operators in Standard
74 procedure Create_Unconstrained_Base_Type
77 -- The predefined signed integer types are constrained subtypes which
78 -- must have a corresponding unconstrained base type. This type is almost
79 -- useless. The only place it has semantics is Subtypes_Statically_Match.
80 -- Consequently, we arrange for it to be identical apart from the setting
81 -- of the constrained bit. This routine takes an entity E for the Type,
82 -- copies it to estabish the base type, then resets the Ekind of the
83 -- original entity to K (the Ekind for the subtype). The Etype field of
84 -- E is set by the call (to point to the created base type entity), and
85 -- also the Is_Constrained flag of E is set.
87 -- To understand the exact requirement for this, see RM 3.5.4(11) which
88 -- makes it clear that Integer, for example, is constrained, with the
89 -- constraint bounds matching the bounds of the (unconstrained) base
90 -- type. The point is that Integer and Integer'Base have identical
91 -- bounds, but do not statically match, since a subtype with constraints
92 -- never matches a subtype with no constraints.
94 function Identifier_For (S : Standard_Entity_Type) return Node_Id;
95 -- Returns an identifier node with the same name as the defining
96 -- identifier corresponding to the given Standard_Entity_Type value
98 procedure Make_Component
102 -- Build a record component with the given type and name, and append to
103 -- the list of components of Rec.
107 Formal_Name : String) return Entity_Id;
108 -- Construct entity for subprogram formal with given name and type
110 function Make_Integer (V : Uint) return Node_Id;
111 -- Builds integer literal with given value
113 procedure Make_Name (Id : Entity_Id; Nam : String);
114 -- Make an entry in the names table for Nam, and set as Chars field of Id
116 function New_Operator (Op : Name_Id; Typ : Entity_Id) return Entity_Id;
117 -- Build entity for standard operator with given name and type
119 function New_Standard_Entity
120 (New_Node_Kind : Node_Kind := N_Defining_Identifier) return Entity_Id;
121 -- Builds a new entity for Standard
123 procedure Print_Standard;
124 -- Print representation of package Standard if switch set
126 procedure Set_Integer_Bounds
131 -- Procedure to set bounds for integer type or subtype. Id is the entity
132 -- whose bounds and type are to be set. The Typ parameter is the Etype
133 -- value for the entity (which will be the same as Id for all predefined
134 -- integer base types. The third and fourth parameters are the bounds.
136 ----------------------
137 -- Build_Float_Type --
138 ----------------------
140 procedure Build_Float_Type (E : Entity_Id; Siz : Int; Digs : Int) is
142 Set_Type_Definition (Parent (E),
143 Make_Floating_Point_Definition (Stloc,
144 Digits_Expression => Make_Integer (UI_From_Int (Digs))));
145 Set_Ekind (E, E_Floating_Point_Type);
148 Set_Elem_Alignment (E);
149 Init_Digits_Value (E, Digs);
150 Set_Float_Bounds (E);
153 Set_Size_Known_At_Compile_Time (E);
154 end Build_Float_Type;
156 -------------------------------
157 -- Build_Signed_Integer_Type --
158 -------------------------------
160 procedure Build_Signed_Integer_Type (E : Entity_Id; Siz : Int) is
161 U2Siz1 : constant Uint := 2 ** (Siz - 1);
162 Lbound : constant Uint := -U2Siz1;
163 Ubound : constant Uint := U2Siz1 - 1;
166 Set_Type_Definition (Parent (E),
167 Make_Signed_Integer_Type_Definition (Stloc,
168 Low_Bound => Make_Integer (Lbound),
169 High_Bound => Make_Integer (Ubound)));
171 Set_Ekind (E, E_Signed_Integer_Type);
174 Set_Elem_Alignment (E);
175 Set_Integer_Bounds (E, E, Lbound, Ubound);
178 Set_Is_Known_Valid (E);
179 Set_Size_Known_At_Compile_Time (E);
180 end Build_Signed_Integer_Type;
182 ----------------------
183 -- Create_Operators --
184 ----------------------
186 -- Each operator has an abbreviated signature. The formals have the names
187 -- LEFT and RIGHT. Their types are not actually used for resolution.
189 procedure Create_Operators is
192 -- The following tables define the binary and unary operators and their
193 -- corresponding result type.
195 Binary_Ops : constant array (S_Binary_Ops) of Name_Id :=
197 -- There is one entry here for each binary operator, except for the
198 -- case of concatenation, where there are three entries, one for a
199 -- String result, one for Wide_String, and one for Wide_Wide_String.
221 Bin_Op_Types : constant array (S_Binary_Ops) of Entity_Id :=
223 -- This table has the corresponding result types. The entries are
224 -- ordered so they correspond to the Binary_Ops array above.
226 (Universal_Integer, -- Add
227 Standard_Boolean, -- And
228 Standard_String, -- Concat (String)
229 Standard_Wide_String, -- Concat (Wide_String)
230 Standard_Wide_Wide_String, -- Concat (Wide_Wide_String)
231 Universal_Integer, -- Divide
232 Standard_Boolean, -- Eq
233 Universal_Integer, -- Expon
234 Standard_Boolean, -- Ge
235 Standard_Boolean, -- Gt
236 Standard_Boolean, -- Le
237 Standard_Boolean, -- Lt
238 Universal_Integer, -- Mod
239 Universal_Integer, -- Multiply
240 Standard_Boolean, -- Ne
241 Standard_Boolean, -- Or
242 Universal_Integer, -- Rem
243 Universal_Integer, -- Subtract
244 Standard_Boolean); -- Xor
246 Unary_Ops : constant array (S_Unary_Ops) of Name_Id :=
248 -- There is one entry here for each unary operator
255 Unary_Op_Types : constant array (S_Unary_Ops) of Entity_Id :=
257 -- This table has the corresponding result types. The entries are
258 -- ordered so they correspond to the Unary_Ops array above.
260 (Universal_Integer, -- Abs
261 Universal_Integer, -- Subtract
262 Standard_Boolean, -- Not
263 Universal_Integer); -- Add
266 for J in S_Binary_Ops loop
267 Op_Node := New_Operator (Binary_Ops (J), Bin_Op_Types (J));
269 Append_Entity (Make_Formal (Any_Type, "LEFT"), Op_Node);
270 Append_Entity (Make_Formal (Any_Type, "RIGHT"), Op_Node);
273 for J in S_Unary_Ops loop
274 Op_Node := New_Operator (Unary_Ops (J), Unary_Op_Types (J));
276 Append_Entity (Make_Formal (Any_Type, "RIGHT"), Op_Node);
279 -- For concatenation, we create a separate operator for each
280 -- array type. This simplifies the resolution of the component-
281 -- component concatenation operation. In Standard, we set the types
282 -- of the formals for string, wide [wide]_string, concatenations.
284 Set_Etype (First_Entity (Standard_Op_Concat), Standard_String);
285 Set_Etype (Last_Entity (Standard_Op_Concat), Standard_String);
287 Set_Etype (First_Entity (Standard_Op_Concatw), Standard_Wide_String);
288 Set_Etype (Last_Entity (Standard_Op_Concatw), Standard_Wide_String);
290 Set_Etype (First_Entity (Standard_Op_Concatww),
291 Standard_Wide_Wide_String);
293 Set_Etype (Last_Entity (Standard_Op_Concatww),
294 Standard_Wide_Wide_String);
296 end Create_Operators;
298 ---------------------
299 -- Create_Standard --
300 ---------------------
302 -- The tree for the package Standard is prefixed to all compilations.
303 -- Several entities required by semantic analysis are denoted by global
304 -- variables that are initialized to point to the corresponding
305 -- occurrences in STANDARD. The visible entities of STANDARD are
306 -- created here. The private entities defined in STANDARD are created
307 -- by Initialize_Standard in the semantics module.
309 procedure Create_Standard is
310 Decl_S : constant List_Id := New_List;
311 -- List of declarations in Standard
313 Decl_A : constant List_Id := New_List;
314 -- List of declarations in ASCII
319 Ident_Node : Node_Id;
325 procedure Build_Exception (S : Standard_Entity_Type);
326 -- Procedure to declare given entity as an exception
328 ---------------------
329 -- Build_Exception --
330 ---------------------
332 procedure Build_Exception (S : Standard_Entity_Type) is
334 Set_Ekind (Standard_Entity (S), E_Exception);
335 Set_Etype (Standard_Entity (S), Standard_Exception_Type);
336 Set_Exception_Code (Standard_Entity (S), Uint_0);
337 Set_Is_Public (Standard_Entity (S), True);
340 Make_Exception_Declaration (Stloc,
341 Defining_Identifier => Standard_Entity (S));
342 Append (Decl, Decl_S);
345 -- Start of processing for Create_Standard
348 -- Initialize scanner for internal scans of literals
350 Scn.Initialize_Scanner (No_Unit, Internal_Source_File);
352 -- First step is to create defining identifiers for each entity
354 for S in Standard_Entity_Type loop
356 S_Name : constant String := Standard_Entity_Type'Image (S);
357 -- Name of entity (note we skip S_ at the start)
359 Ident_Node : Node_Id;
360 -- Defining identifier node
363 Ident_Node := New_Standard_Entity;
364 Make_Name (Ident_Node, S_Name (3 .. S_Name'Length));
365 Standard_Entity (S) := Ident_Node;
369 -- Create package declaration node for package Standard
371 Standard_Package_Node := New_Node (N_Package_Declaration, Stloc);
373 Pspec := New_Node (N_Package_Specification, Stloc);
374 Set_Specification (Standard_Package_Node, Pspec);
376 Set_Defining_Unit_Name (Pspec, Standard_Standard);
377 Set_Visible_Declarations (Pspec, Decl_S);
379 Set_Ekind (Standard_Standard, E_Package);
380 Set_Is_Pure (Standard_Standard);
381 Set_Is_Compilation_Unit (Standard_Standard);
383 -- Create type declaration nodes for standard types
385 for S in S_Types loop
386 Decl := New_Node (N_Full_Type_Declaration, Stloc);
387 Set_Defining_Identifier (Decl, Standard_Entity (S));
388 Set_Is_Frozen (Standard_Entity (S));
389 Set_Is_Public (Standard_Entity (S));
390 Append (Decl, Decl_S);
393 -- Create type definition node for type Boolean. The Size is set to
394 -- 1 as required by Ada 95 and current ARG interpretations for Ada/83.
396 -- Note: Object_Size of Boolean is 8. This means that we do NOT in
397 -- general know that Boolean variables have valid values, so we do
398 -- not set the Is_Known_Valid flag.
400 Tdef_Node := New_Node (N_Enumeration_Type_Definition, Stloc);
401 Set_Literals (Tdef_Node, New_List);
402 Append (Standard_False, Literals (Tdef_Node));
403 Append (Standard_True, Literals (Tdef_Node));
404 Set_Type_Definition (Parent (Standard_Boolean), Tdef_Node);
406 Set_Ekind (Standard_Boolean, E_Enumeration_Type);
407 Set_First_Literal (Standard_Boolean, Standard_False);
408 Set_Etype (Standard_Boolean, Standard_Boolean);
409 Init_Esize (Standard_Boolean, Standard_Character_Size);
410 Init_RM_Size (Standard_Boolean, 1);
411 Set_Elem_Alignment (Standard_Boolean);
413 Set_Is_Unsigned_Type (Standard_Boolean);
414 Set_Size_Known_At_Compile_Time (Standard_Boolean);
416 Set_Ekind (Standard_True, E_Enumeration_Literal);
417 Set_Etype (Standard_True, Standard_Boolean);
418 Set_Enumeration_Pos (Standard_True, Uint_1);
419 Set_Enumeration_Rep (Standard_True, Uint_1);
420 Set_Is_Known_Valid (Standard_True, True);
422 Set_Ekind (Standard_False, E_Enumeration_Literal);
423 Set_Etype (Standard_False, Standard_Boolean);
424 Set_Enumeration_Pos (Standard_False, Uint_0);
425 Set_Enumeration_Rep (Standard_False, Uint_0);
426 Set_Is_Known_Valid (Standard_False, True);
428 -- For the bounds of Boolean, we create a range node corresponding to
430 -- range False .. True
432 -- where the occurrences of the literals must point to the
433 -- corresponding definition.
435 R_Node := New_Node (N_Range, Stloc);
436 B_Node := New_Node (N_Identifier, Stloc);
437 Set_Chars (B_Node, Chars (Standard_False));
438 Set_Entity (B_Node, Standard_False);
439 Set_Etype (B_Node, Standard_Boolean);
440 Set_Is_Static_Expression (B_Node);
441 Set_Low_Bound (R_Node, B_Node);
443 B_Node := New_Node (N_Identifier, Stloc);
444 Set_Chars (B_Node, Chars (Standard_True));
445 Set_Entity (B_Node, Standard_True);
446 Set_Etype (B_Node, Standard_Boolean);
447 Set_Is_Static_Expression (B_Node);
448 Set_High_Bound (R_Node, B_Node);
450 Set_Scalar_Range (Standard_Boolean, R_Node);
451 Set_Etype (R_Node, Standard_Boolean);
452 Set_Parent (R_Node, Standard_Boolean);
454 -- Record entity identifiers for boolean literals in the
455 -- Boolean_Literals array, for easy reference during expansion.
457 Boolean_Literals := (False => Standard_False, True => Standard_True);
459 -- Create type definition nodes for predefined integer types
461 Build_Signed_Integer_Type
462 (Standard_Short_Short_Integer, Standard_Short_Short_Integer_Size);
464 Build_Signed_Integer_Type
465 (Standard_Short_Integer, Standard_Short_Integer_Size);
467 Build_Signed_Integer_Type
468 (Standard_Integer, Standard_Integer_Size);
476 LIS := Standard_Long_Integer_Size;
479 Build_Signed_Integer_Type (Standard_Long_Integer, LIS);
482 Build_Signed_Integer_Type
483 (Standard_Long_Long_Integer, Standard_Long_Long_Integer_Size);
485 Create_Unconstrained_Base_Type
486 (Standard_Short_Short_Integer, E_Signed_Integer_Subtype);
488 Create_Unconstrained_Base_Type
489 (Standard_Short_Integer, E_Signed_Integer_Subtype);
491 Create_Unconstrained_Base_Type
492 (Standard_Integer, E_Signed_Integer_Subtype);
494 Create_Unconstrained_Base_Type
495 (Standard_Long_Integer, E_Signed_Integer_Subtype);
497 Create_Unconstrained_Base_Type
498 (Standard_Long_Long_Integer, E_Signed_Integer_Subtype);
500 -- Create type definition nodes for predefined float types
503 (Standard_Short_Float,
504 Standard_Short_Float_Size,
505 Standard_Short_Float_Digits);
510 Standard_Float_Digits);
513 (Standard_Long_Float,
514 Standard_Long_Float_Size,
515 Standard_Long_Float_Digits);
518 (Standard_Long_Long_Float,
519 Standard_Long_Long_Float_Size,
520 Standard_Long_Long_Float_Digits);
522 -- Create type definition node for type Character. Note that we do not
523 -- set the Literals field, since type Character is handled with special
524 -- routine that do not need a literal list.
526 Tdef_Node := New_Node (N_Enumeration_Type_Definition, Stloc);
527 Set_Type_Definition (Parent (Standard_Character), Tdef_Node);
529 Set_Ekind (Standard_Character, E_Enumeration_Type);
530 Set_Etype (Standard_Character, Standard_Character);
531 Init_Esize (Standard_Character, Standard_Character_Size);
532 Init_RM_Size (Standard_Character, 8);
533 Set_Elem_Alignment (Standard_Character);
535 Set_Is_Unsigned_Type (Standard_Character);
536 Set_Is_Character_Type (Standard_Character);
537 Set_Is_Known_Valid (Standard_Character);
538 Set_Size_Known_At_Compile_Time (Standard_Character);
540 -- Create the bounds for type Character
542 R_Node := New_Node (N_Range, Stloc);
544 -- Low bound for type Character (Standard.Nul)
546 B_Node := New_Node (N_Character_Literal, Stloc);
547 Set_Is_Static_Expression (B_Node);
548 Set_Chars (B_Node, No_Name);
549 Set_Char_Literal_Value (B_Node, Uint_0);
550 Set_Entity (B_Node, Empty);
551 Set_Etype (B_Node, Standard_Character);
552 Set_Low_Bound (R_Node, B_Node);
554 -- High bound for type Character
556 B_Node := New_Node (N_Character_Literal, Stloc);
557 Set_Is_Static_Expression (B_Node);
558 Set_Chars (B_Node, No_Name);
559 Set_Char_Literal_Value (B_Node, UI_From_Int (16#FF#));
560 Set_Entity (B_Node, Empty);
561 Set_Etype (B_Node, Standard_Character);
562 Set_High_Bound (R_Node, B_Node);
564 Set_Scalar_Range (Standard_Character, R_Node);
565 Set_Etype (R_Node, Standard_Character);
566 Set_Parent (R_Node, Standard_Character);
568 -- Create type definition for type Wide_Character. Note that we do not
569 -- set the Literals field, since type Wide_Character is handled with
570 -- special routines that do not need a literal list.
572 Tdef_Node := New_Node (N_Enumeration_Type_Definition, Stloc);
573 Set_Type_Definition (Parent (Standard_Wide_Character), Tdef_Node);
575 Set_Ekind (Standard_Wide_Character, E_Enumeration_Type);
576 Set_Etype (Standard_Wide_Character, Standard_Wide_Character);
577 Init_Size (Standard_Wide_Character, Standard_Wide_Character_Size);
579 Set_Elem_Alignment (Standard_Wide_Character);
580 Set_Is_Unsigned_Type (Standard_Wide_Character);
581 Set_Is_Character_Type (Standard_Wide_Character);
582 Set_Is_Known_Valid (Standard_Wide_Character);
583 Set_Size_Known_At_Compile_Time (Standard_Wide_Character);
585 -- Create the bounds for type Wide_Character
587 R_Node := New_Node (N_Range, Stloc);
589 -- Low bound for type Wide_Character
591 B_Node := New_Node (N_Character_Literal, Stloc);
592 Set_Is_Static_Expression (B_Node);
593 Set_Chars (B_Node, No_Name); -- ???
594 Set_Char_Literal_Value (B_Node, Uint_0);
595 Set_Entity (B_Node, Empty);
596 Set_Etype (B_Node, Standard_Wide_Character);
597 Set_Low_Bound (R_Node, B_Node);
599 -- High bound for type Wide_Character
601 B_Node := New_Node (N_Character_Literal, Stloc);
602 Set_Is_Static_Expression (B_Node);
603 Set_Chars (B_Node, No_Name); -- ???
604 Set_Char_Literal_Value (B_Node, UI_From_Int (16#FFFF#));
605 Set_Entity (B_Node, Empty);
606 Set_Etype (B_Node, Standard_Wide_Character);
607 Set_High_Bound (R_Node, B_Node);
609 Set_Scalar_Range (Standard_Wide_Character, R_Node);
610 Set_Etype (R_Node, Standard_Wide_Character);
611 Set_Parent (R_Node, Standard_Wide_Character);
613 -- Create type definition for type Wide_Wide_Character. Note that we
614 -- do not set the Literals field, since type Wide_Wide_Character is
615 -- handled with special routines that do not need a literal list.
617 Tdef_Node := New_Node (N_Enumeration_Type_Definition, Stloc);
618 Set_Type_Definition (Parent (Standard_Wide_Wide_Character), Tdef_Node);
620 Set_Ekind (Standard_Wide_Wide_Character, E_Enumeration_Type);
621 Set_Etype (Standard_Wide_Wide_Character,
622 Standard_Wide_Wide_Character);
623 Init_Size (Standard_Wide_Wide_Character,
624 Standard_Wide_Wide_Character_Size);
626 Set_Elem_Alignment (Standard_Wide_Wide_Character);
627 Set_Is_Unsigned_Type (Standard_Wide_Wide_Character);
628 Set_Is_Character_Type (Standard_Wide_Wide_Character);
629 Set_Is_Known_Valid (Standard_Wide_Wide_Character);
630 Set_Size_Known_At_Compile_Time (Standard_Wide_Wide_Character);
631 Set_Is_Ada_2005_Only (Standard_Wide_Wide_Character);
633 -- Create the bounds for type Wide_Wide_Character
635 R_Node := New_Node (N_Range, Stloc);
637 -- Low bound for type Wide_Wide_Character
639 B_Node := New_Node (N_Character_Literal, Stloc);
640 Set_Is_Static_Expression (B_Node);
641 Set_Chars (B_Node, No_Name); -- ???
642 Set_Char_Literal_Value (B_Node, Uint_0);
643 Set_Entity (B_Node, Empty);
644 Set_Etype (B_Node, Standard_Wide_Wide_Character);
645 Set_Low_Bound (R_Node, B_Node);
647 -- High bound for type Wide_Wide_Character
649 B_Node := New_Node (N_Character_Literal, Stloc);
650 Set_Is_Static_Expression (B_Node);
651 Set_Chars (B_Node, No_Name); -- ???
652 Set_Char_Literal_Value (B_Node, UI_From_Int (16#7FFF_FFFF#));
653 Set_Entity (B_Node, Empty);
654 Set_Etype (B_Node, Standard_Wide_Wide_Character);
655 Set_High_Bound (R_Node, B_Node);
657 Set_Scalar_Range (Standard_Wide_Wide_Character, R_Node);
658 Set_Etype (R_Node, Standard_Wide_Wide_Character);
659 Set_Parent (R_Node, Standard_Wide_Wide_Character);
661 -- Create type definition node for type String
663 Tdef_Node := New_Node (N_Unconstrained_Array_Definition, Stloc);
666 CompDef_Node : Node_Id;
668 CompDef_Node := New_Node (N_Component_Definition, Stloc);
669 Set_Aliased_Present (CompDef_Node, False);
670 Set_Access_Definition (CompDef_Node, Empty);
671 Set_Subtype_Indication (CompDef_Node, Identifier_For (S_Character));
672 Set_Component_Definition (Tdef_Node, CompDef_Node);
675 Set_Subtype_Marks (Tdef_Node, New_List);
676 Append (Identifier_For (S_Positive), Subtype_Marks (Tdef_Node));
677 Set_Type_Definition (Parent (Standard_String), Tdef_Node);
679 Set_Ekind (Standard_String, E_String_Type);
680 Set_Etype (Standard_String, Standard_String);
681 Set_Component_Type (Standard_String, Standard_Character);
682 Set_Component_Size (Standard_String, Uint_8);
683 Init_Size_Align (Standard_String);
684 Set_Alignment (Standard_String, Uint_1);
686 -- On targets where a storage unit is larger than a byte (such as AAMP),
687 -- pragma Pack has a real effect on the representation of type String,
688 -- and the type must be marked as having a nonstandard representation.
690 if System_Storage_Unit > Uint_8 then
691 Set_Has_Non_Standard_Rep (Standard_String);
692 Set_Has_Pragma_Pack (Standard_String);
695 -- Set index type of String
698 (Subtype_Marks (Type_Definition (Parent (Standard_String))));
699 Set_First_Index (Standard_String, E_Id);
700 Set_Entity (E_Id, Standard_Positive);
701 Set_Etype (E_Id, Standard_Positive);
703 -- Create type definition node for type Wide_String
705 Tdef_Node := New_Node (N_Unconstrained_Array_Definition, Stloc);
708 CompDef_Node : Node_Id;
710 CompDef_Node := New_Node (N_Component_Definition, Stloc);
711 Set_Aliased_Present (CompDef_Node, False);
712 Set_Access_Definition (CompDef_Node, Empty);
713 Set_Subtype_Indication (CompDef_Node,
714 Identifier_For (S_Wide_Character));
715 Set_Component_Definition (Tdef_Node, CompDef_Node);
718 Set_Subtype_Marks (Tdef_Node, New_List);
719 Append (Identifier_For (S_Positive), Subtype_Marks (Tdef_Node));
720 Set_Type_Definition (Parent (Standard_Wide_String), Tdef_Node);
722 Set_Ekind (Standard_Wide_String, E_String_Type);
723 Set_Etype (Standard_Wide_String, Standard_Wide_String);
724 Set_Component_Type (Standard_Wide_String, Standard_Wide_Character);
725 Set_Component_Size (Standard_Wide_String, Uint_16);
726 Init_Size_Align (Standard_Wide_String);
728 -- Set index type of Wide_String
731 (Subtype_Marks (Type_Definition (Parent (Standard_Wide_String))));
732 Set_First_Index (Standard_Wide_String, E_Id);
733 Set_Entity (E_Id, Standard_Positive);
734 Set_Etype (E_Id, Standard_Positive);
736 -- Create type definition node for type Wide_Wide_String
738 Tdef_Node := New_Node (N_Unconstrained_Array_Definition, Stloc);
741 CompDef_Node : Node_Id;
743 CompDef_Node := New_Node (N_Component_Definition, Stloc);
744 Set_Aliased_Present (CompDef_Node, False);
745 Set_Access_Definition (CompDef_Node, Empty);
746 Set_Subtype_Indication (CompDef_Node,
747 Identifier_For (S_Wide_Wide_Character));
748 Set_Component_Definition (Tdef_Node, CompDef_Node);
751 Set_Subtype_Marks (Tdef_Node, New_List);
752 Append (Identifier_For (S_Positive), Subtype_Marks (Tdef_Node));
753 Set_Type_Definition (Parent (Standard_Wide_Wide_String), Tdef_Node);
755 Set_Ekind (Standard_Wide_Wide_String, E_String_Type);
756 Set_Etype (Standard_Wide_Wide_String,
757 Standard_Wide_Wide_String);
758 Set_Component_Type (Standard_Wide_Wide_String,
759 Standard_Wide_Wide_Character);
760 Set_Component_Size (Standard_Wide_Wide_String, Uint_32);
761 Init_Size_Align (Standard_Wide_Wide_String);
762 Set_Is_Ada_2005_Only (Standard_Wide_Wide_String);
764 -- Set index type of Wide_Wide_String
767 (Subtype_Marks (Type_Definition (Parent (Standard_Wide_Wide_String))));
768 Set_First_Index (Standard_Wide_Wide_String, E_Id);
769 Set_Entity (E_Id, Standard_Positive);
770 Set_Etype (E_Id, Standard_Positive);
772 -- Create subtype declaration for Natural
774 Decl := New_Node (N_Subtype_Declaration, Stloc);
775 Set_Defining_Identifier (Decl, Standard_Natural);
776 Set_Subtype_Indication (Decl,
777 New_Occurrence_Of (Standard_Integer, Stloc));
778 Append (Decl, Decl_S);
780 Set_Ekind (Standard_Natural, E_Signed_Integer_Subtype);
781 Set_Etype (Standard_Natural, Base_Type (Standard_Integer));
782 Init_Esize (Standard_Natural, Standard_Integer_Size);
783 Init_RM_Size (Standard_Natural, Standard_Integer_Size - 1);
784 Set_Elem_Alignment (Standard_Natural);
785 Set_Size_Known_At_Compile_Time
787 Set_Integer_Bounds (Standard_Natural,
788 Typ => Base_Type (Standard_Integer),
790 Hb => Intval (High_Bound (Scalar_Range (Standard_Integer))));
791 Set_Is_Constrained (Standard_Natural);
792 Set_Is_Frozen (Standard_Natural);
793 Set_Is_Public (Standard_Natural);
795 -- Create subtype declaration for Positive
797 Decl := New_Node (N_Subtype_Declaration, Stloc);
798 Set_Defining_Identifier (Decl, Standard_Positive);
799 Set_Subtype_Indication (Decl,
800 New_Occurrence_Of (Standard_Integer, Stloc));
801 Append (Decl, Decl_S);
803 Set_Ekind (Standard_Positive, E_Signed_Integer_Subtype);
804 Set_Etype (Standard_Positive, Base_Type (Standard_Integer));
805 Init_Esize (Standard_Positive, Standard_Integer_Size);
806 Init_RM_Size (Standard_Positive, Standard_Integer_Size - 1);
807 Set_Elem_Alignment (Standard_Positive);
809 Set_Size_Known_At_Compile_Time (Standard_Positive);
811 Set_Integer_Bounds (Standard_Positive,
812 Typ => Base_Type (Standard_Integer),
814 Hb => Intval (High_Bound (Scalar_Range (Standard_Integer))));
815 Set_Is_Constrained (Standard_Positive);
816 Set_Is_Frozen (Standard_Positive);
817 Set_Is_Public (Standard_Positive);
819 -- Create declaration for package ASCII
821 Decl := New_Node (N_Package_Declaration, Stloc);
822 Append (Decl, Decl_S);
824 Pspec := New_Node (N_Package_Specification, Stloc);
825 Set_Specification (Decl, Pspec);
827 Set_Defining_Unit_Name (Pspec, Standard_Entity (S_ASCII));
828 Set_Ekind (Standard_Entity (S_ASCII), E_Package);
829 Set_Visible_Declarations (Pspec, Decl_A);
831 -- Create control character definitions in package ASCII. Note that
832 -- the character literal entries created here correspond to literal
833 -- values that are impossible in the source, but can be represented
834 -- internally with no difficulties.
838 for S in S_ASCII_Names loop
839 Decl := New_Node (N_Object_Declaration, Staloc);
840 Set_Constant_Present (Decl, True);
843 A_Char : constant Entity_Id := Standard_Entity (S);
847 Set_Sloc (A_Char, Staloc);
848 Set_Ekind (A_Char, E_Constant);
849 Set_Never_Set_In_Source (A_Char, True);
850 Set_Is_True_Constant (A_Char, True);
851 Set_Etype (A_Char, Standard_Character);
852 Set_Scope (A_Char, Standard_Entity (S_ASCII));
853 Set_Is_Immediately_Visible (A_Char, False);
854 Set_Is_Public (A_Char, True);
855 Set_Is_Known_Valid (A_Char, True);
857 Append_Entity (A_Char, Standard_Entity (S_ASCII));
858 Set_Defining_Identifier (Decl, A_Char);
860 Set_Object_Definition (Decl, Identifier_For (S_Character));
861 Expr_Decl := New_Node (N_Character_Literal, Staloc);
862 Set_Expression (Decl, Expr_Decl);
864 Set_Is_Static_Expression (Expr_Decl);
865 Set_Chars (Expr_Decl, No_Name);
866 Set_Etype (Expr_Decl, Standard_Character);
867 Set_Char_Literal_Value (Expr_Decl, UI_From_Int (Int (Ccode)));
870 Append (Decl, Decl_A);
872 -- Increment character code, dealing with non-contiguities
876 if Ccode = 16#20# then
878 elsif Ccode = 16#27# then
880 elsif Ccode = 16#3C# then
882 elsif Ccode = 16#41# then
887 -- Create semantic phase entities
889 Standard_Void_Type := New_Standard_Entity;
890 Set_Ekind (Standard_Void_Type, E_Void);
891 Set_Etype (Standard_Void_Type, Standard_Void_Type);
892 Set_Scope (Standard_Void_Type, Standard_Standard);
893 Make_Name (Standard_Void_Type, "_void_type");
895 -- The type field of packages is set to void
897 Set_Etype (Standard_Standard, Standard_Void_Type);
898 Set_Etype (Standard_ASCII, Standard_Void_Type);
900 -- Standard_A_String is actually used in generated code, so it has a
901 -- type name that is reasonable, but does not overlap any Ada name.
903 Standard_A_String := New_Standard_Entity;
904 Set_Ekind (Standard_A_String, E_Access_Type);
905 Set_Scope (Standard_A_String, Standard_Standard);
906 Set_Etype (Standard_A_String, Standard_A_String);
909 Init_Size (Standard_A_String, System_Address_Size);
911 Init_Size (Standard_A_String, System_Address_Size * 2);
914 Init_Alignment (Standard_A_String);
916 Set_Directly_Designated_Type
917 (Standard_A_String, Standard_String);
918 Make_Name (Standard_A_String, "access_string");
920 Standard_A_Char := New_Standard_Entity;
921 Set_Ekind (Standard_A_Char, E_Access_Type);
922 Set_Scope (Standard_A_Char, Standard_Standard);
923 Set_Etype (Standard_A_Char, Standard_A_String);
924 Init_Size (Standard_A_Char, System_Address_Size);
925 Set_Elem_Alignment (Standard_A_Char);
927 Set_Directly_Designated_Type (Standard_A_Char, Standard_Character);
928 Make_Name (Standard_A_Char, "access_character");
930 -- Standard_Debug_Renaming_Type is used for the special objects created
931 -- to encode the names occurring in renaming declarations for use by the
932 -- debugger (see exp_dbug.adb). The type is a zero-sized subtype of
935 Standard_Debug_Renaming_Type := New_Standard_Entity;
937 Set_Ekind (Standard_Debug_Renaming_Type, E_Signed_Integer_Subtype);
938 Set_Scope (Standard_Debug_Renaming_Type, Standard_Standard);
939 Set_Etype (Standard_Debug_Renaming_Type, Base_Type (Standard_Integer));
940 Init_Esize (Standard_Debug_Renaming_Type, 0);
941 Init_RM_Size (Standard_Debug_Renaming_Type, 0);
942 Set_Size_Known_At_Compile_Time (Standard_Debug_Renaming_Type);
943 Set_Integer_Bounds (Standard_Debug_Renaming_Type,
944 Typ => Base_Type (Standard_Debug_Renaming_Type),
947 Set_Is_Constrained (Standard_Debug_Renaming_Type);
948 Set_Has_Size_Clause (Standard_Debug_Renaming_Type);
950 Make_Name (Standard_Debug_Renaming_Type, "_renaming_type");
952 -- Note on type names. The type names for the following special types
953 -- are constructed so that they will look reasonable should they ever
954 -- appear in error messages etc, although in practice the use of the
955 -- special insertion character } for types results in special handling
956 -- of these type names in any case. The blanks in these names would
957 -- trouble in Gigi, but that's OK here, since none of these types
958 -- should ever get through to Gigi! Attributes of these types are
959 -- filled out to minimize problems with cascaded errors (for example,
960 -- Any_Integer is given reasonable and consistent type and size values)
962 Any_Type := New_Standard_Entity;
963 Decl := New_Node (N_Full_Type_Declaration, Stloc);
964 Set_Defining_Identifier (Decl, Any_Type);
965 Set_Scope (Any_Type, Standard_Standard);
966 Build_Signed_Integer_Type (Any_Type, Standard_Integer_Size);
967 Make_Name (Any_Type, "any type");
969 Any_Id := New_Standard_Entity;
970 Set_Ekind (Any_Id, E_Variable);
971 Set_Scope (Any_Id, Standard_Standard);
972 Set_Etype (Any_Id, Any_Type);
974 Init_Alignment (Any_Id);
975 Make_Name (Any_Id, "any id");
977 Any_Access := New_Standard_Entity;
978 Set_Ekind (Any_Access, E_Access_Type);
979 Set_Scope (Any_Access, Standard_Standard);
980 Set_Etype (Any_Access, Any_Access);
981 Init_Size (Any_Access, System_Address_Size);
982 Set_Elem_Alignment (Any_Access);
983 Make_Name (Any_Access, "an access type");
985 Any_Character := New_Standard_Entity;
986 Set_Ekind (Any_Character, E_Enumeration_Type);
987 Set_Scope (Any_Character, Standard_Standard);
988 Set_Etype (Any_Character, Any_Character);
989 Set_Is_Unsigned_Type (Any_Character);
990 Set_Is_Character_Type (Any_Character);
991 Init_Esize (Any_Character, Standard_Character_Size);
992 Init_RM_Size (Any_Character, 8);
993 Set_Elem_Alignment (Any_Character);
994 Set_Scalar_Range (Any_Character, Scalar_Range (Standard_Character));
995 Make_Name (Any_Character, "a character type");
997 Any_Array := New_Standard_Entity;
998 Set_Ekind (Any_Array, E_String_Type);
999 Set_Scope (Any_Array, Standard_Standard);
1000 Set_Etype (Any_Array, Any_Array);
1001 Set_Component_Type (Any_Array, Any_Character);
1002 Init_Size_Align (Any_Array);
1003 Make_Name (Any_Array, "an array type");
1005 Any_Boolean := New_Standard_Entity;
1006 Set_Ekind (Any_Boolean, E_Enumeration_Type);
1007 Set_Scope (Any_Boolean, Standard_Standard);
1008 Set_Etype (Any_Boolean, Standard_Boolean);
1009 Init_Esize (Any_Boolean, Standard_Character_Size);
1010 Init_RM_Size (Any_Boolean, 1);
1011 Set_Elem_Alignment (Any_Boolean);
1012 Set_Is_Unsigned_Type (Any_Boolean);
1013 Set_Scalar_Range (Any_Boolean, Scalar_Range (Standard_Boolean));
1014 Make_Name (Any_Boolean, "a boolean type");
1016 Any_Composite := New_Standard_Entity;
1017 Set_Ekind (Any_Composite, E_Array_Type);
1018 Set_Scope (Any_Composite, Standard_Standard);
1019 Set_Etype (Any_Composite, Any_Composite);
1020 Set_Component_Size (Any_Composite, Uint_0);
1021 Set_Component_Type (Any_Composite, Standard_Integer);
1022 Init_Size_Align (Any_Composite);
1023 Make_Name (Any_Composite, "a composite type");
1025 Any_Discrete := New_Standard_Entity;
1026 Set_Ekind (Any_Discrete, E_Signed_Integer_Type);
1027 Set_Scope (Any_Discrete, Standard_Standard);
1028 Set_Etype (Any_Discrete, Any_Discrete);
1029 Init_Size (Any_Discrete, Standard_Integer_Size);
1030 Set_Elem_Alignment (Any_Discrete);
1031 Make_Name (Any_Discrete, "a discrete type");
1033 Any_Fixed := New_Standard_Entity;
1034 Set_Ekind (Any_Fixed, E_Ordinary_Fixed_Point_Type);
1035 Set_Scope (Any_Fixed, Standard_Standard);
1036 Set_Etype (Any_Fixed, Any_Fixed);
1037 Init_Size (Any_Fixed, Standard_Integer_Size);
1038 Set_Elem_Alignment (Any_Fixed);
1039 Make_Name (Any_Fixed, "a fixed-point type");
1041 Any_Integer := New_Standard_Entity;
1042 Set_Ekind (Any_Integer, E_Signed_Integer_Type);
1043 Set_Scope (Any_Integer, Standard_Standard);
1044 Set_Etype (Any_Integer, Standard_Long_Long_Integer);
1045 Init_Size (Any_Integer, Standard_Long_Long_Integer_Size);
1046 Set_Elem_Alignment (Any_Integer);
1050 Typ => Base_Type (Standard_Integer),
1052 Hb => Intval (High_Bound (Scalar_Range (Standard_Integer))));
1053 Make_Name (Any_Integer, "an integer type");
1055 Any_Modular := New_Standard_Entity;
1056 Set_Ekind (Any_Modular, E_Modular_Integer_Type);
1057 Set_Scope (Any_Modular, Standard_Standard);
1058 Set_Etype (Any_Modular, Standard_Long_Long_Integer);
1059 Init_Size (Any_Modular, Standard_Long_Long_Integer_Size);
1060 Set_Elem_Alignment (Any_Modular);
1061 Set_Is_Unsigned_Type (Any_Modular);
1062 Make_Name (Any_Modular, "a modular type");
1064 Any_Numeric := New_Standard_Entity;
1065 Set_Ekind (Any_Numeric, E_Signed_Integer_Type);
1066 Set_Scope (Any_Numeric, Standard_Standard);
1067 Set_Etype (Any_Numeric, Standard_Long_Long_Integer);
1068 Init_Size (Any_Numeric, Standard_Long_Long_Integer_Size);
1069 Set_Elem_Alignment (Any_Numeric);
1070 Make_Name (Any_Numeric, "a numeric type");
1072 Any_Real := New_Standard_Entity;
1073 Set_Ekind (Any_Real, E_Floating_Point_Type);
1074 Set_Scope (Any_Real, Standard_Standard);
1075 Set_Etype (Any_Real, Standard_Long_Long_Float);
1076 Init_Size (Any_Real, Standard_Long_Long_Float_Size);
1077 Set_Elem_Alignment (Any_Real);
1078 Make_Name (Any_Real, "a real type");
1080 Any_Scalar := New_Standard_Entity;
1081 Set_Ekind (Any_Scalar, E_Signed_Integer_Type);
1082 Set_Scope (Any_Scalar, Standard_Standard);
1083 Set_Etype (Any_Scalar, Any_Scalar);
1084 Init_Size (Any_Scalar, Standard_Integer_Size);
1085 Set_Elem_Alignment (Any_Scalar);
1086 Make_Name (Any_Scalar, "a scalar type");
1088 Any_String := New_Standard_Entity;
1089 Set_Ekind (Any_String, E_String_Type);
1090 Set_Scope (Any_String, Standard_Standard);
1091 Set_Etype (Any_String, Any_String);
1092 Set_Component_Type (Any_String, Any_Character);
1093 Init_Size_Align (Any_String);
1094 Make_Name (Any_String, "a string type");
1102 Low_Bound => Make_Integer (Uint_0),
1103 High_Bound => Make_Integer (Uint_2 ** Standard_Integer_Size));
1104 Set_Etype (Index, Standard_Integer);
1105 Set_First_Index (Any_String, Index);
1108 Standard_Integer_8 := New_Standard_Entity;
1109 Decl := New_Node (N_Full_Type_Declaration, Stloc);
1110 Set_Defining_Identifier (Decl, Standard_Integer_8);
1111 Make_Name (Standard_Integer_8, "integer_8");
1112 Set_Scope (Standard_Integer_8, Standard_Standard);
1113 Build_Signed_Integer_Type (Standard_Integer_8, 8);
1115 Standard_Integer_16 := New_Standard_Entity;
1116 Decl := New_Node (N_Full_Type_Declaration, Stloc);
1117 Set_Defining_Identifier (Decl, Standard_Integer_16);
1118 Make_Name (Standard_Integer_16, "integer_16");
1119 Set_Scope (Standard_Integer_16, Standard_Standard);
1120 Build_Signed_Integer_Type (Standard_Integer_16, 16);
1122 Standard_Integer_32 := New_Standard_Entity;
1123 Decl := New_Node (N_Full_Type_Declaration, Stloc);
1124 Set_Defining_Identifier (Decl, Standard_Integer_32);
1125 Make_Name (Standard_Integer_32, "integer_32");
1126 Set_Scope (Standard_Integer_32, Standard_Standard);
1127 Build_Signed_Integer_Type (Standard_Integer_32, 32);
1129 Standard_Integer_64 := New_Standard_Entity;
1130 Decl := New_Node (N_Full_Type_Declaration, Stloc);
1131 Set_Defining_Identifier (Decl, Standard_Integer_64);
1132 Make_Name (Standard_Integer_64, "integer_64");
1133 Set_Scope (Standard_Integer_64, Standard_Standard);
1134 Build_Signed_Integer_Type (Standard_Integer_64, 64);
1136 Standard_Unsigned := New_Standard_Entity;
1137 Decl := New_Node (N_Full_Type_Declaration, Stloc);
1138 Set_Defining_Identifier (Decl, Standard_Unsigned);
1139 Make_Name (Standard_Unsigned, "unsigned");
1141 Set_Ekind (Standard_Unsigned, E_Modular_Integer_Type);
1142 Set_Scope (Standard_Unsigned, Standard_Standard);
1143 Set_Etype (Standard_Unsigned, Standard_Unsigned);
1144 Init_Size (Standard_Unsigned, Standard_Integer_Size);
1145 Set_Elem_Alignment (Standard_Unsigned);
1146 Set_Modulus (Standard_Unsigned,
1147 Uint_2 ** Standard_Integer_Size);
1148 Set_Is_Unsigned_Type (Standard_Unsigned);
1149 Set_Size_Known_At_Compile_Time
1150 (Standard_Unsigned);
1152 R_Node := New_Node (N_Range, Stloc);
1153 Set_Low_Bound (R_Node, Make_Integer (Uint_0));
1154 Set_High_Bound (R_Node, Make_Integer (Modulus (Standard_Unsigned) - 1));
1155 Set_Etype (Low_Bound (R_Node), Standard_Unsigned);
1156 Set_Etype (High_Bound (R_Node), Standard_Unsigned);
1157 Set_Scalar_Range (Standard_Unsigned, R_Node);
1159 -- Note: universal integer and universal real are constructed as fully
1160 -- formed signed numeric types, with parameters corresponding to the
1161 -- longest runtime types (Long_Long_Integer and Long_Long_Float). This
1162 -- allows Gigi to properly process references to universal types that
1163 -- are not folded at compile time.
1165 Universal_Integer := New_Standard_Entity;
1166 Decl := New_Node (N_Full_Type_Declaration, Stloc);
1167 Set_Defining_Identifier (Decl, Universal_Integer);
1168 Make_Name (Universal_Integer, "universal_integer");
1169 Set_Scope (Universal_Integer, Standard_Standard);
1170 Build_Signed_Integer_Type
1171 (Universal_Integer, Standard_Long_Long_Integer_Size);
1173 Universal_Real := New_Standard_Entity;
1174 Decl := New_Node (N_Full_Type_Declaration, Stloc);
1175 Set_Defining_Identifier (Decl, Universal_Real);
1176 Make_Name (Universal_Real, "universal_real");
1177 Set_Scope (Universal_Real, Standard_Standard);
1180 Standard_Long_Long_Float_Size,
1181 Standard_Long_Long_Float_Digits);
1183 -- Note: universal fixed, unlike universal integer and universal real,
1184 -- is never used at runtime, so it does not need to have bounds set.
1186 Universal_Fixed := New_Standard_Entity;
1187 Decl := New_Node (N_Full_Type_Declaration, Stloc);
1188 Set_Defining_Identifier (Decl, Universal_Fixed);
1189 Make_Name (Universal_Fixed, "universal_fixed");
1190 Set_Ekind (Universal_Fixed, E_Ordinary_Fixed_Point_Type);
1191 Set_Etype (Universal_Fixed, Universal_Fixed);
1192 Set_Scope (Universal_Fixed, Standard_Standard);
1193 Init_Size (Universal_Fixed, Standard_Long_Long_Integer_Size);
1194 Set_Elem_Alignment (Universal_Fixed);
1195 Set_Size_Known_At_Compile_Time
1198 -- Create type declaration for Duration, using a 64-bit size. The
1199 -- delta and size values depend on the mode set in system.ads.
1201 Build_Duration : declare
1207 -- In 32 bit mode, the size is 32 bits, and the delta and
1208 -- small values are set to 20 milliseconds (20.0**(10.0**(-3)).
1210 if Duration_32_Bits_On_Target then
1211 Dlo := Intval (Type_Low_Bound (Standard_Integer_32));
1212 Dhi := Intval (Type_High_Bound (Standard_Integer_32));
1213 Delta_Val := UR_From_Components (UI_From_Int (20), Uint_3, 10);
1215 -- In standard 64-bit mode, the size is 64-bits and the delta and
1216 -- small values are set to nanoseconds (1.0**(10.0**(-9))
1219 Dlo := Intval (Type_Low_Bound (Standard_Integer_64));
1220 Dhi := Intval (Type_High_Bound (Standard_Integer_64));
1221 Delta_Val := UR_From_Components (Uint_1, Uint_9, 10);
1224 Tdef_Node := Make_Ordinary_Fixed_Point_Definition (Stloc,
1225 Delta_Expression => Make_Real_Literal (Stloc, Delta_Val),
1226 Real_Range_Specification =>
1227 Make_Real_Range_Specification (Stloc,
1228 Low_Bound => Make_Real_Literal (Stloc,
1229 Realval => Dlo * Delta_Val),
1230 High_Bound => Make_Real_Literal (Stloc,
1231 Realval => Dhi * Delta_Val)));
1233 Set_Type_Definition (Parent (Standard_Duration), Tdef_Node);
1235 Set_Ekind (Standard_Duration, E_Ordinary_Fixed_Point_Type);
1236 Set_Etype (Standard_Duration, Standard_Duration);
1238 if Duration_32_Bits_On_Target then
1239 Init_Size (Standard_Duration, 32);
1241 Init_Size (Standard_Duration, 64);
1244 Set_Elem_Alignment (Standard_Duration);
1245 Set_Delta_Value (Standard_Duration, Delta_Val);
1246 Set_Small_Value (Standard_Duration, Delta_Val);
1247 Set_Scalar_Range (Standard_Duration,
1248 Real_Range_Specification
1249 (Type_Definition (Parent (Standard_Duration))));
1251 -- Normally it does not matter that nodes in package Standard are
1252 -- not marked as analyzed. The Scalar_Range of the fixed-point
1253 -- type Standard_Duration is an exception, because of the special
1254 -- test made in Freeze.Freeze_Fixed_Point_Type.
1256 Set_Analyzed (Scalar_Range (Standard_Duration));
1258 Set_Etype (Type_High_Bound (Standard_Duration), Standard_Duration);
1259 Set_Etype (Type_Low_Bound (Standard_Duration), Standard_Duration);
1261 Set_Is_Static_Expression (Type_High_Bound (Standard_Duration));
1262 Set_Is_Static_Expression (Type_Low_Bound (Standard_Duration));
1264 Set_Corresponding_Integer_Value
1265 (Type_High_Bound (Standard_Duration), Dhi);
1267 Set_Corresponding_Integer_Value
1268 (Type_Low_Bound (Standard_Duration), Dlo);
1270 Set_Size_Known_At_Compile_Time (Standard_Duration);
1273 -- Build standard exception type. Note that the type name here is
1274 -- actually used in the generated code, so it must be set correctly
1276 -- ??? Also note that the Import_Code component is now declared
1277 -- as a System.Standard_Library.Exception_Code to enforce run-time
1278 -- library implementation consistency. It's too early here to resort
1279 -- to rtsfind to get the proper node for that type, so we use the
1280 -- closest possible available type node at hand instead. We should
1281 -- probably be fixing this up at some point.
1283 Standard_Exception_Type := New_Standard_Entity;
1284 Set_Ekind (Standard_Exception_Type, E_Record_Type);
1285 Set_Etype (Standard_Exception_Type, Standard_Exception_Type);
1286 Set_Scope (Standard_Exception_Type, Standard_Standard);
1287 Set_Stored_Constraint
1288 (Standard_Exception_Type, No_Elist);
1289 Init_Size_Align (Standard_Exception_Type);
1290 Set_Size_Known_At_Compile_Time
1291 (Standard_Exception_Type, True);
1292 Make_Name (Standard_Exception_Type, "exception");
1295 (Standard_Exception_Type, Standard_Boolean, "Not_Handled_By_Others");
1297 (Standard_Exception_Type, Standard_Character, "Lang");
1299 (Standard_Exception_Type, Standard_Natural, "Name_Length");
1301 (Standard_Exception_Type, Standard_A_Char, "Full_Name");
1303 (Standard_Exception_Type, Standard_A_Char, "HTable_Ptr");
1305 (Standard_Exception_Type, Standard_Unsigned, "Import_Code");
1307 (Standard_Exception_Type, Standard_A_Char, "Raise_Hook");
1309 -- Build tree for record declaration, for use by the back-end
1312 Comp_List : List_Id;
1316 Comp := First_Entity (Standard_Exception_Type);
1317 Comp_List := New_List;
1319 while Present (Comp) loop
1321 Make_Component_Declaration (Stloc,
1322 Defining_Identifier => Comp,
1323 Component_Definition =>
1324 Make_Component_Definition (Stloc,
1325 Aliased_Present => False,
1326 Subtype_Indication => New_Occurrence_Of (Etype (Comp),
1333 Decl := Make_Full_Type_Declaration (Stloc,
1334 Defining_Identifier => Standard_Exception_Type,
1336 Make_Record_Definition (Stloc,
1339 Make_Component_List (Stloc,
1340 Component_Items => Comp_List)));
1343 Append (Decl, Decl_S);
1345 Layout_Type (Standard_Exception_Type);
1347 -- Create declarations of standard exceptions
1349 Build_Exception (S_Constraint_Error);
1350 Build_Exception (S_Program_Error);
1351 Build_Exception (S_Storage_Error);
1352 Build_Exception (S_Tasking_Error);
1354 -- Numeric_Error is a normal exception in Ada 83, but in Ada 95
1355 -- it is a renaming of Constraint_Error. Is this test too early???
1357 if Ada_Version = Ada_83 then
1358 Build_Exception (S_Numeric_Error);
1361 Decl := New_Node (N_Exception_Renaming_Declaration, Stloc);
1362 E_Id := Standard_Entity (S_Numeric_Error);
1364 Set_Ekind (E_Id, E_Exception);
1365 Set_Exception_Code (E_Id, Uint_0);
1366 Set_Etype (E_Id, Standard_Exception_Type);
1367 Set_Is_Public (E_Id);
1368 Set_Renamed_Entity (E_Id, Standard_Entity (S_Constraint_Error));
1370 Set_Defining_Identifier (Decl, E_Id);
1371 Append (Decl, Decl_S);
1373 Ident_Node := New_Node (N_Identifier, Stloc);
1374 Set_Chars (Ident_Node, Chars (Standard_Entity (S_Constraint_Error)));
1375 Set_Entity (Ident_Node, Standard_Entity (S_Constraint_Error));
1376 Set_Name (Decl, Ident_Node);
1379 -- Abort_Signal is an entity that does not get made visible
1381 Abort_Signal := New_Standard_Entity;
1382 Set_Chars (Abort_Signal, Name_uAbort_Signal);
1383 Set_Ekind (Abort_Signal, E_Exception);
1384 Set_Exception_Code (Abort_Signal, Uint_0);
1385 Set_Etype (Abort_Signal, Standard_Exception_Type);
1386 Set_Scope (Abort_Signal, Standard_Standard);
1387 Set_Is_Public (Abort_Signal, True);
1389 Make_Exception_Declaration (Stloc,
1390 Defining_Identifier => Abort_Signal);
1392 -- Create defining identifiers for shift operator entities. Note
1393 -- that these entities are used only for marking shift operators
1394 -- generated internally, and hence need no structure, just a name
1395 -- and a unique identity.
1397 Standard_Op_Rotate_Left := New_Standard_Entity;
1398 Set_Chars (Standard_Op_Rotate_Left, Name_Rotate_Left);
1399 Set_Ekind (Standard_Op_Rotate_Left, E_Operator);
1401 Standard_Op_Rotate_Right := New_Standard_Entity;
1402 Set_Chars (Standard_Op_Rotate_Right, Name_Rotate_Right);
1403 Set_Ekind (Standard_Op_Rotate_Right, E_Operator);
1405 Standard_Op_Shift_Left := New_Standard_Entity;
1406 Set_Chars (Standard_Op_Shift_Left, Name_Shift_Left);
1407 Set_Ekind (Standard_Op_Shift_Left, E_Operator);
1409 Standard_Op_Shift_Right := New_Standard_Entity;
1410 Set_Chars (Standard_Op_Shift_Right, Name_Shift_Right);
1411 Set_Ekind (Standard_Op_Shift_Right, E_Operator);
1413 Standard_Op_Shift_Right_Arithmetic := New_Standard_Entity;
1414 Set_Chars (Standard_Op_Shift_Right_Arithmetic,
1415 Name_Shift_Right_Arithmetic);
1416 Set_Ekind (Standard_Op_Shift_Right_Arithmetic,
1419 -- Create standard operator declarations
1423 -- Initialize visibility table with entities in Standard
1425 for E in Standard_Entity_Type loop
1426 if Ekind (Standard_Entity (E)) /= E_Operator then
1428 (Chars (Standard_Entity (E)), Standard_Entity (E));
1429 Set_Homonym (Standard_Entity (E), Empty);
1432 if E not in S_ASCII_Names then
1433 Set_Scope (Standard_Entity (E), Standard_Standard);
1434 Set_Is_Immediately_Visible (Standard_Entity (E));
1438 -- The predefined package Standard itself does not have a scope;
1439 -- it is the only entity in the system not to have one, and this
1440 -- is what identifies the package to Gigi.
1442 Set_Scope (Standard_Standard, Empty);
1444 -- Set global variables indicating last Id values and version
1446 Last_Standard_Node_Id := Last_Node_Id;
1447 Last_Standard_List_Id := Last_List_Id;
1449 -- The Error node has an Etype of Any_Type to help error recovery
1451 Set_Etype (Error, Any_Type);
1453 -- Print representation of standard if switch set
1455 if Opt.Print_Standard then
1458 end Create_Standard;
1460 ------------------------------------
1461 -- Create_Unconstrained_Base_Type --
1462 ------------------------------------
1464 procedure Create_Unconstrained_Base_Type
1468 New_Ent : constant Entity_Id := New_Copy (E);
1472 Set_Is_Constrained (E, True);
1473 Set_Is_First_Subtype (E, True);
1474 Set_Etype (E, New_Ent);
1476 Append_Entity (New_Ent, Standard_Standard);
1477 Set_Is_Constrained (New_Ent, False);
1478 Set_Etype (New_Ent, New_Ent);
1479 Set_Is_Known_Valid (New_Ent, True);
1481 if K = E_Signed_Integer_Subtype then
1482 Set_Etype (Low_Bound (Scalar_Range (E)), New_Ent);
1483 Set_Etype (High_Bound (Scalar_Range (E)), New_Ent);
1486 end Create_Unconstrained_Base_Type;
1488 --------------------
1489 -- Identifier_For --
1490 --------------------
1492 function Identifier_For (S : Standard_Entity_Type) return Node_Id is
1493 Ident_Node : Node_Id;
1496 Ident_Node := New_Node (N_Identifier, Stloc);
1497 Set_Chars (Ident_Node, Chars (Standard_Entity (S)));
1501 --------------------
1502 -- Make_Component --
1503 --------------------
1505 procedure Make_Component
1510 Id : constant Entity_Id := New_Standard_Entity;
1513 Set_Ekind (Id, E_Component);
1514 Set_Etype (Id, Typ);
1515 Set_Scope (Id, Rec);
1516 Init_Component_Location (Id);
1518 Set_Original_Record_Component (Id, Id);
1519 Make_Name (Id, Nam);
1520 Append_Entity (Id, Rec);
1527 function Make_Formal
1529 Formal_Name : String) return Entity_Id
1534 Formal := New_Standard_Entity;
1536 Set_Ekind (Formal, E_In_Parameter);
1537 Set_Mechanism (Formal, Default_Mechanism);
1538 Set_Scope (Formal, Standard_Standard);
1539 Set_Etype (Formal, Typ);
1540 Make_Name (Formal, Formal_Name);
1549 function Make_Integer (V : Uint) return Node_Id is
1550 N : constant Node_Id := Make_Integer_Literal (Stloc, V);
1552 Set_Is_Static_Expression (N);
1560 procedure Make_Name (Id : Entity_Id; Nam : String) is
1562 for J in 1 .. Nam'Length loop
1563 Name_Buffer (J) := Fold_Lower (Nam (Nam'First + (J - 1)));
1566 Name_Len := Nam'Length;
1567 Set_Chars (Id, Name_Find);
1574 function New_Operator (Op : Name_Id; Typ : Entity_Id) return Entity_Id is
1575 Ident_Node : Entity_Id;
1578 Ident_Node := Make_Defining_Identifier (Stloc, Op);
1580 Set_Is_Pure (Ident_Node, True);
1581 Set_Ekind (Ident_Node, E_Operator);
1582 Set_Etype (Ident_Node, Typ);
1583 Set_Scope (Ident_Node, Standard_Standard);
1584 Set_Homonym (Ident_Node, Get_Name_Entity_Id (Op));
1585 Set_Convention (Ident_Node, Convention_Intrinsic);
1587 Set_Is_Immediately_Visible (Ident_Node, True);
1588 Set_Is_Intrinsic_Subprogram (Ident_Node, True);
1590 Set_Name_Entity_Id (Op, Ident_Node);
1591 Append_Entity (Ident_Node, Standard_Standard);
1595 -------------------------
1596 -- New_Standard_Entity --
1597 -------------------------
1599 function New_Standard_Entity
1600 (New_Node_Kind : Node_Kind := N_Defining_Identifier) return Entity_Id
1602 E : constant Entity_Id := New_Entity (New_Node_Kind, Stloc);
1605 -- All standard entities are Pure and Public
1610 -- All standard entity names are analyzed manually, and are thus
1611 -- frozen as soon as they are created.
1615 -- Set debug information required for all standard types
1617 Set_Needs_Debug_Info (E);
1619 -- All standard entities are built with fully qualified names, so
1620 -- set the flag to prevent an abortive attempt at requalification!
1622 Set_Has_Qualified_Name (E);
1624 -- Return newly created entity to be completed by caller
1627 end New_Standard_Entity;
1629 --------------------
1630 -- Print_Standard --
1631 --------------------
1633 procedure Print_Standard is
1635 procedure P (Item : String) renames Output.Write_Line;
1636 -- Short-hand, since we do a lot of line writes here!
1638 procedure P_Int_Range (Size : Pos);
1639 -- Prints the range of an integer based on its Size
1641 procedure P_Float_Range (Id : Entity_Id);
1642 -- Prints the bounds range for the given float type entity
1648 procedure P_Float_Range (Id : Entity_Id) is
1649 Digs : constant Nat := UI_To_Int (Digits_Value (Id));
1652 Write_Str (" range ");
1654 if Vax_Float (Id) then
1655 if Digs = VAXFF_Digits then
1656 Write_Str (VAXFF_First'Universal_Literal_String);
1658 Write_Str (VAXFF_Last'Universal_Literal_String);
1660 elsif Digs = VAXDF_Digits then
1661 Write_Str (VAXDF_First'Universal_Literal_String);
1663 Write_Str (VAXDF_Last'Universal_Literal_String);
1666 pragma Assert (Digs = VAXGF_Digits);
1668 Write_Str (VAXGF_First'Universal_Literal_String);
1670 Write_Str (VAXGF_Last'Universal_Literal_String);
1673 elsif Is_AAMP_Float (Id) then
1674 if Digs = AAMPS_Digits then
1675 Write_Str (AAMPS_First'Universal_Literal_String);
1677 Write_Str (AAMPS_Last'Universal_Literal_String);
1680 pragma Assert (Digs = AAMPL_Digits);
1681 Write_Str (AAMPL_First'Universal_Literal_String);
1683 Write_Str (AAMPL_Last'Universal_Literal_String);
1686 elsif Digs = IEEES_Digits then
1687 Write_Str (IEEES_First'Universal_Literal_String);
1689 Write_Str (IEEES_Last'Universal_Literal_String);
1691 elsif Digs = IEEEL_Digits then
1692 Write_Str (IEEEL_First'Universal_Literal_String);
1694 Write_Str (IEEEL_Last'Universal_Literal_String);
1697 pragma Assert (Digs = IEEEX_Digits);
1699 Write_Str (IEEEX_First'Universal_Literal_String);
1701 Write_Str (IEEEX_Last'Universal_Literal_String);
1712 procedure P_Int_Range (Size : Pos) is
1714 Write_Str (" is range -(2 **");
1715 Write_Int (Size - 1);
1717 Write_Str (" .. +(2 **");
1718 Write_Int (Size - 1);
1719 Write_Str (" - 1);");
1723 -- Start of processing for Print_Standard
1726 P ("-- Representation of package Standard");
1728 P ("-- This is not accurate Ada, since new base types cannot be ");
1729 P ("-- created, but the listing shows the target dependent");
1730 P ("-- characteristics of the Standard types for this compiler");
1733 P ("package Standard is");
1734 P ("pragma Pure(Standard);");
1737 P (" type Boolean is (False, True);");
1738 P (" for Boolean'Size use 1;");
1739 P (" for Boolean use (False => 0, True => 1);");
1744 Write_Str (" type Integer");
1745 P_Int_Range (Standard_Integer_Size);
1746 Write_Str (" for Integer'Size use ");
1747 Write_Int (Standard_Integer_Size);
1751 P (" subtype Natural is Integer range 0 .. Integer'Last;");
1752 P (" subtype Positive is Integer range 1 .. Integer'Last;");
1755 Write_Str (" type Short_Short_Integer");
1756 P_Int_Range (Standard_Short_Short_Integer_Size);
1757 Write_Str (" for Short_Short_Integer'Size use ");
1758 Write_Int (Standard_Short_Short_Integer_Size);
1762 Write_Str (" type Short_Integer");
1763 P_Int_Range (Standard_Short_Integer_Size);
1764 Write_Str (" for Short_Integer'Size use ");
1765 Write_Int (Standard_Short_Integer_Size);
1769 Write_Str (" type Long_Integer");
1770 P_Int_Range (Standard_Long_Integer_Size);
1771 Write_Str (" for Long_Integer'Size use ");
1772 Write_Int (Standard_Long_Integer_Size);
1776 Write_Str (" type Long_Long_Integer");
1777 P_Int_Range (Standard_Long_Long_Integer_Size);
1778 Write_Str (" for Long_Long_Integer'Size use ");
1779 Write_Int (Standard_Long_Long_Integer_Size);
1783 -- Floating point types
1785 Write_Str (" type Short_Float is digits ");
1786 Write_Int (Standard_Short_Float_Digits);
1788 P_Float_Range (Standard_Short_Float);
1789 Write_Str (" for Short_Float'Size use ");
1790 Write_Int (Standard_Short_Float_Size);
1794 Write_Str (" type Float is digits ");
1795 Write_Int (Standard_Float_Digits);
1797 P_Float_Range (Standard_Float);
1798 Write_Str (" for Float'Size use ");
1799 Write_Int (Standard_Float_Size);
1803 Write_Str (" type Long_Float is digits ");
1804 Write_Int (Standard_Long_Float_Digits);
1806 P_Float_Range (Standard_Long_Float);
1807 Write_Str (" for Long_Float'Size use ");
1808 Write_Int (Standard_Long_Float_Size);
1812 Write_Str (" type Long_Long_Float is digits ");
1813 Write_Int (Standard_Long_Long_Float_Digits);
1815 P_Float_Range (Standard_Long_Long_Float);
1816 Write_Str (" for Long_Long_Float'Size use ");
1817 Write_Int (Standard_Long_Long_Float_Size);
1821 P (" type Character is (...)");
1822 Write_Str (" for Character'Size use ");
1823 Write_Int (Standard_Character_Size);
1825 P (" -- See RM A.1(35) for details of this type");
1828 P (" type Wide_Character is (...)");
1829 Write_Str (" for Wide_Character'Size use ");
1830 Write_Int (Standard_Wide_Character_Size);
1832 P (" -- See RM A.1(36) for details of this type");
1835 P (" type Wide_Wide_Character is (...)");
1836 Write_Str (" for Wide_Character'Size use ");
1837 Write_Int (Standard_Wide_Wide_Character_Size);
1839 P (" -- See RM A.1(36) for details of this type");
1841 P (" type String is array (Positive range <>) of Character;");
1842 P (" pragma Pack (String);");
1845 P (" type Wide_String is array (Positive range <>)" &
1846 " of Wide_Character;");
1847 P (" pragma Pack (Wide_String);");
1850 P (" type Wide_Wide_String is array (Positive range <>)" &
1851 " of Wide_Wide_Character;");
1852 P (" pragma Pack (Wide_Wide_String);");
1855 -- Here it's OK to use the Duration type of the host compiler since
1856 -- the implementation of Duration in GNAT is target independent.
1858 if Duration_32_Bits_On_Target then
1859 P (" type Duration is delta 0.020");
1860 P (" range -((2 ** 31 - 1) * 0.020) ..");
1861 P (" +((2 ** 31 - 1) * 0.020);");
1862 P (" for Duration'Small use 0.020;");
1864 P (" type Duration is delta 0.000000001");
1865 P (" range -((2 ** 63 - 1) * 0.000000001) ..");
1866 P (" +((2 ** 63 - 1) * 0.000000001);");
1867 P (" for Duration'Small use 0.000000001;");
1872 P (" Constraint_Error : exception;");
1873 P (" Program_Error : exception;");
1874 P (" Storage_Error : exception;");
1875 P (" Tasking_Error : exception;");
1876 P (" Numeric_Error : exception renames Constraint_Error;");
1879 P ("end Standard;");
1882 ----------------------
1883 -- Set_Float_Bounds --
1884 ----------------------
1886 procedure Set_Float_Bounds (Id : Entity_Id) is
1888 -- Low bound of literal value
1891 -- High bound of literal value
1894 -- Range specification
1896 Digs : constant Nat := UI_To_Int (Digits_Value (Id));
1897 -- Digits value, used to select bounds
1900 -- Note: for the call from Cstand to initially create the types in
1901 -- Standard, Vax_Float will always be False. Circuitry in Sem_Vfpt
1902 -- will adjust these types appropriately in the Vax_Float case if
1903 -- a pragma Float_Representation (VAX_Float) is used.
1905 if Vax_Float (Id) then
1906 if Digs = VAXFF_Digits then
1908 (VAXFF_First'Universal_Literal_String);
1910 (VAXFF_Last'Universal_Literal_String);
1912 elsif Digs = VAXDF_Digits then
1914 (VAXDF_First'Universal_Literal_String);
1916 (VAXDF_Last'Universal_Literal_String);
1919 pragma Assert (Digs = VAXGF_Digits);
1922 (VAXGF_First'Universal_Literal_String);
1924 (VAXGF_Last'Universal_Literal_String);
1927 elsif Is_AAMP_Float (Id) then
1928 if Digs = AAMPS_Digits then
1930 (AAMPS_First'Universal_Literal_String);
1932 (AAMPS_Last'Universal_Literal_String);
1935 pragma Assert (Digs = AAMPL_Digits);
1937 (AAMPL_First'Universal_Literal_String);
1939 (AAMPL_Last'Universal_Literal_String);
1942 elsif Digs = IEEES_Digits then
1944 (IEEES_First'Universal_Literal_String);
1946 (IEEES_Last'Universal_Literal_String);
1948 elsif Digs = IEEEL_Digits then
1950 (IEEEL_First'Universal_Literal_String);
1952 (IEEEL_Last'Universal_Literal_String);
1955 pragma Assert (Digs = IEEEX_Digits);
1958 (IEEEX_First'Universal_Literal_String);
1960 (IEEEX_Last'Universal_Literal_String);
1964 Set_Is_Static_Expression (L);
1967 Set_Is_Static_Expression (H);
1969 R := New_Node (N_Range, Stloc);
1970 Set_Low_Bound (R, L);
1971 Set_High_Bound (R, H);
1972 Set_Includes_Infinities (R, True);
1973 Set_Scalar_Range (Id, R);
1976 end Set_Float_Bounds;
1978 ------------------------
1979 -- Set_Integer_Bounds --
1980 ------------------------
1982 procedure Set_Integer_Bounds
1988 L : Node_Id; -- Low bound of literal value
1989 H : Node_Id; -- High bound of literal value
1990 R : Node_Id; -- Range specification
1993 L := Make_Integer (Lb);
1994 H := Make_Integer (Hb);
1999 R := New_Node (N_Range, Stloc);
2000 Set_Low_Bound (R, L);
2001 Set_High_Bound (R, H);
2002 Set_Scalar_Range (Id, R);
2005 Set_Is_Unsigned_Type (Id, Lb >= 0);
2006 end Set_Integer_Bounds;