1------------------------------------------------------------------------------ 2-- -- 3-- GNAT COMPILER COMPONENTS -- 4-- -- 5-- C S T A N D -- 6-- -- 7-- B o d y -- 8-- -- 9-- Copyright (C) 1992-2021, 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 26with Atree; use Atree; 27with Csets; use Csets; 28with Debug; use Debug; 29with Einfo; use Einfo; 30with Einfo.Entities; use Einfo.Entities; 31with Einfo.Utils; use Einfo.Utils; 32with Elists; use Elists; 33with Layout; use Layout; 34with Namet; use Namet; 35with Nlists; use Nlists; 36with Nmake; use Nmake; 37with Opt; use Opt; 38with Output; use Output; 39with Set_Targ; use Set_Targ; 40with Targparm; use Targparm; 41with Tbuild; use Tbuild; 42with Ttypes; use Ttypes; 43with Sem_Mech; use Sem_Mech; 44with Sem_Util; use Sem_Util; 45with Sinfo; use Sinfo; 46with Sinfo.Nodes; use Sinfo.Nodes; 47with Sinfo.Utils; use Sinfo.Utils; 48with Snames; use Snames; 49with Stand; use Stand; 50with Uintp; use Uintp; 51with Urealp; use Urealp; 52 53package body CStand is 54 55 Stloc : Source_Ptr renames Standard_Location; 56 Staloc : Source_Ptr renames Standard_ASCII_Location; 57 -- Standard abbreviations used throughout this package 58 59 Back_End_Float_Types : Elist_Id := No_Elist; 60 -- List used for any floating point supported by the back end. This needs 61 -- to be at the library level, because the call back procedures retrieving 62 -- this information are at that level. 63 64 ----------------------- 65 -- Local Subprograms -- 66 ----------------------- 67 68 procedure Build_Float_Type 69 (E : Entity_Id; 70 Digs : Int; 71 Rep : Float_Rep_Kind; 72 Siz : Int; 73 Align : Int); 74 -- Procedure to build standard predefined float base type. The first 75 -- parameter is the entity for the type. The second parameter is the 76 -- digits value. The third parameter indicates the representation to 77 -- be used for the type. The fourth parameter is the size in bits. 78 -- The fifth parameter is the alignment in storage units. Each type 79 -- is added to the list of predefined floating point types. 80 -- 81 -- Note that both RM_Size and Esize are set to the specified size, i.e. 82 -- we do not set the RM_Size to the precision passed by the back end. 83 -- This is consistent with the semantics of 'Size specified in the RM 84 -- because we cannot pack components of the type tighter than this size. 85 86 procedure Build_Signed_Integer_Type (E : Entity_Id; Siz : Nat); 87 -- Procedure to build standard predefined signed integer subtype. The 88 -- first parameter is the entity for the subtype. The second parameter 89 -- is the size in bits. The corresponding base type is not built by 90 -- this routine but instead must be built by the caller where needed. 91 92 procedure Build_Unsigned_Integer_Type (Uns : Entity_Id; Siz : Nat); 93 -- Procedure to build standard predefined unsigned integer subtype. These 94 -- subtypes are not user visible, but they are used internally. The first 95 -- parameter is the entity for the subtype. The second parameter is the 96 -- size in bits. 97 98 procedure Copy_Float_Type (To : Entity_Id; From : Entity_Id); 99 -- Build a floating point type, copying representation details from From. 100 -- This is used to create predefined floating point types based on 101 -- available types in the back end. 102 103 procedure Create_Operators; 104 -- Make entries for each of the predefined operators in Standard 105 106 procedure Create_Unconstrained_Base_Type 107 (E : Entity_Id; 108 K : Entity_Kind); 109 -- The predefined signed integer types are constrained subtypes which 110 -- must have a corresponding unconstrained base type. This type is almost 111 -- useless. The only place it has semantics is Subtypes_Statically_Match. 112 -- Consequently, we arrange for it to be identical apart from the setting 113 -- of the constrained bit. This routine takes an entity E for the Type, 114 -- copies it to estabish the base type, then resets the Ekind of the 115 -- original entity to K (the Ekind for the subtype). The Etype field of 116 -- E is set by the call (to point to the created base type entity), and 117 -- also the Is_Constrained flag of E is set. 118 -- 119 -- To understand the exact requirement for this, see RM 3.5.4(11) which 120 -- makes it clear that Integer, for example, is constrained, with the 121 -- constraint bounds matching the bounds of the (unconstrained) base 122 -- type. The point is that Integer and Integer'Base have identical 123 -- bounds, but do not statically match, since a subtype with constraints 124 -- never matches a subtype with no constraints. 125 126 function Find_Back_End_Float_Type (Name : String) return Entity_Id; 127 -- Return the first float type in Back_End_Float_Types with the given name. 128 -- Names of entities in back end types, are either type names of C 129 -- predefined types (all lower case), or mode names (upper case). 130 -- These are not generally valid identifier names. 131 132 function Identifier_For (S : Standard_Entity_Type) return Node_Id; 133 -- Returns an identifier node with the same name as the defining identifier 134 -- corresponding to the given Standard_Entity_Type value. 135 136 procedure Make_Aliased_Component 137 (Rec : Entity_Id; 138 Typ : Entity_Id; 139 Nam : String); 140 -- Build an aliased record component with the given type and name, 141 -- and append to the list of components of Rec. 142 143 function Make_Formal (Typ : Entity_Id; Nam : String) return Entity_Id; 144 -- Construct entity for subprogram formal with given name and type 145 146 function Make_Integer (V : Uint) return Node_Id; 147 -- Builds integer literal with given value 148 149 function New_Operator (Op : Name_Id; Typ : Entity_Id) return Entity_Id; 150 -- Build entity for standard operator with given name and type 151 152 function New_Standard_Entity return Entity_Id; 153 -- Builds a new entity for Standard 154 155 function New_Standard_Entity (Nam : String) return Entity_Id; 156 -- Builds a new entity for Standard with Nkind = N_Defining_Identifier, 157 -- and Chars of this defining identifier set to the given string Nam. 158 159 procedure Print_Standard; 160 -- Print representation of package Standard if switch set 161 162 procedure Register_Float_Type 163 (Name : String; 164 Digs : Positive; 165 Float_Rep : Float_Rep_Kind; 166 Precision : Positive; 167 Size : Positive; 168 Alignment : Natural); 169 -- Registers a single back end floating-point type (from FPT_Mode_Table in 170 -- Set_Targ). This will create a predefined floating-point base type for 171 -- one of the floating point types reported by the back end, and add it 172 -- to the list of predefined float types. Name is the name of the type 173 -- as a normal format (non-null-terminated) string. Digs is the number of 174 -- digits, which is always non-zero, since non-floating-point types were 175 -- filtered out earlier. Float_Rep indicates the kind of floating-point 176 -- type, and Precision, Size and Alignment are the precision, size and 177 -- alignment in bits. 178 179 procedure Set_Integer_Bounds 180 (Id : Entity_Id; 181 Typ : Entity_Id; 182 Lb : Uint; 183 Hb : Uint); 184 -- Procedure to set bounds for integer type or subtype. Id is the entity 185 -- whose bounds and type are to be set. The Typ parameter is the Etype 186 -- value for the entity (which will be the same as Id for all predefined 187 -- integer base types. The third and fourth parameters are the bounds. 188 189 ---------------------- 190 -- Build_Float_Type -- 191 ---------------------- 192 193 procedure Build_Float_Type 194 (E : Entity_Id; 195 Digs : Int; 196 Rep : Float_Rep_Kind; 197 Siz : Int; 198 Align : Int) 199 is 200 begin 201 Set_Type_Definition (Parent (E), 202 Make_Floating_Point_Definition (Stloc, 203 Digits_Expression => Make_Integer (UI_From_Int (Digs)))); 204 205 Mutate_Ekind (E, E_Floating_Point_Type); 206 Set_Etype (E, E); 207 Set_Digits_Value (E, UI_From_Int (Digs)); 208 Set_Float_Rep (E, Rep); 209 Init_Size (E, Siz); 210 Set_Elem_Alignment (E, Align); 211 Set_Float_Bounds (E); 212 Set_Is_Frozen (E); 213 Set_Is_Public (E); 214 Set_Size_Known_At_Compile_Time (E); 215 end Build_Float_Type; 216 217 ------------------------------ 218 -- Find_Back_End_Float_Type -- 219 ------------------------------ 220 221 function Find_Back_End_Float_Type (Name : String) return Entity_Id is 222 N : Elmt_Id; 223 224 begin 225 N := First_Elmt (Back_End_Float_Types); 226 while Present (N) and then Get_Name_String (Chars (Node (N))) /= Name 227 loop 228 Next_Elmt (N); 229 end loop; 230 231 return Node (N); 232 end Find_Back_End_Float_Type; 233 234 ------------------------------- 235 -- Build_Signed_Integer_Type -- 236 ------------------------------- 237 238 procedure Build_Signed_Integer_Type (E : Entity_Id; Siz : Nat) is 239 U2Siz1 : constant Uint := 2 ** (Siz - 1); 240 Lbound : constant Uint := -U2Siz1; 241 Ubound : constant Uint := U2Siz1 - 1; 242 243 begin 244 Set_Type_Definition (Parent (E), 245 Make_Signed_Integer_Type_Definition (Stloc, 246 Low_Bound => Make_Integer (Lbound), 247 High_Bound => Make_Integer (Ubound))); 248 249 Mutate_Ekind (E, E_Signed_Integer_Type); 250 Set_Etype (E, E); 251 Init_Size (E, Siz); 252 Set_Elem_Alignment (E); 253 Set_Integer_Bounds (E, E, Lbound, Ubound); 254 Set_Is_Frozen (E); 255 Set_Is_Public (E); 256 Set_Is_Known_Valid (E); 257 Set_Size_Known_At_Compile_Time (E); 258 end Build_Signed_Integer_Type; 259 260 --------------------------------- 261 -- Build_Unsigned_Integer_Type -- 262 --------------------------------- 263 264 procedure Build_Unsigned_Integer_Type 265 (Uns : Entity_Id; 266 Siz : Nat) 267 is 268 Decl : constant Node_Id := New_Node (N_Full_Type_Declaration, Stloc); 269 R_Node : constant Node_Id := New_Node (N_Range, Stloc); 270 271 begin 272 Set_Defining_Identifier (Decl, Uns); 273 274 Mutate_Ekind (Uns, E_Modular_Integer_Type); 275 Set_Scope (Uns, Standard_Standard); 276 Set_Etype (Uns, Uns); 277 Init_Size (Uns, Siz); 278 Set_Elem_Alignment (Uns); 279 Set_Modulus (Uns, Uint_2 ** Siz); 280 Set_Is_Unsigned_Type (Uns); 281 Set_Size_Known_At_Compile_Time (Uns); 282 Set_Is_Known_Valid (Uns, True); 283 284 Set_Low_Bound (R_Node, Make_Integer (Uint_0)); 285 Set_High_Bound (R_Node, Make_Integer (Modulus (Uns) - 1)); 286 Set_Etype (Low_Bound (R_Node), Uns); 287 Set_Etype (High_Bound (R_Node), Uns); 288 Set_Scalar_Range (Uns, R_Node); 289 end Build_Unsigned_Integer_Type; 290 291 --------------------- 292 -- Copy_Float_Type -- 293 --------------------- 294 295 procedure Copy_Float_Type (To : Entity_Id; From : Entity_Id) is 296 begin 297 Build_Float_Type 298 (To, UI_To_Int (Digits_Value (From)), Float_Rep (From), 299 UI_To_Int (Esize (From)), UI_To_Int (Alignment (From))); 300 end Copy_Float_Type; 301 302 ---------------------- 303 -- Create_Operators -- 304 ---------------------- 305 306 -- Each operator has an abbreviated signature. The formals have the names 307 -- LEFT and RIGHT. Their types are not actually used for resolution. 308 309 procedure Create_Operators is 310 Op_Node : Entity_Id; 311 312 -- The following tables define the binary and unary operators and their 313 -- corresponding result type. 314 315 Binary_Ops : constant array (S_Binary_Ops) of Name_Id := 316 317 -- There is one entry here for each binary operator, except for the 318 -- case of concatenation, where there are three entries, one for a 319 -- String result, one for Wide_String, and one for Wide_Wide_String. 320 321 (Name_Op_Add, 322 Name_Op_And, 323 Name_Op_Concat, 324 Name_Op_Concat, 325 Name_Op_Concat, 326 Name_Op_Divide, 327 Name_Op_Eq, 328 Name_Op_Expon, 329 Name_Op_Ge, 330 Name_Op_Gt, 331 Name_Op_Le, 332 Name_Op_Lt, 333 Name_Op_Mod, 334 Name_Op_Multiply, 335 Name_Op_Ne, 336 Name_Op_Or, 337 Name_Op_Rem, 338 Name_Op_Subtract, 339 Name_Op_Xor); 340 341 Bin_Op_Types : constant array (S_Binary_Ops) of Entity_Id := 342 343 -- This table has the corresponding result types. The entries are 344 -- ordered so they correspond to the Binary_Ops array above. 345 346 (Universal_Integer, -- Add 347 Standard_Boolean, -- And 348 Standard_String, -- Concat (String) 349 Standard_Wide_String, -- Concat (Wide_String) 350 Standard_Wide_Wide_String, -- Concat (Wide_Wide_String) 351 Universal_Integer, -- Divide 352 Standard_Boolean, -- Eq 353 Universal_Integer, -- Expon 354 Standard_Boolean, -- Ge 355 Standard_Boolean, -- Gt 356 Standard_Boolean, -- Le 357 Standard_Boolean, -- Lt 358 Universal_Integer, -- Mod 359 Universal_Integer, -- Multiply 360 Standard_Boolean, -- Ne 361 Standard_Boolean, -- Or 362 Universal_Integer, -- Rem 363 Universal_Integer, -- Subtract 364 Standard_Boolean); -- Xor 365 366 Unary_Ops : constant array (S_Unary_Ops) of Name_Id := 367 368 -- There is one entry here for each unary operator 369 370 (Name_Op_Abs, 371 Name_Op_Subtract, 372 Name_Op_Not, 373 Name_Op_Add); 374 375 Unary_Op_Types : constant array (S_Unary_Ops) of Entity_Id := 376 377 -- This table has the corresponding result types. The entries are 378 -- ordered so they correspond to the Unary_Ops array above. 379 380 (Universal_Integer, -- Abs 381 Universal_Integer, -- Subtract 382 Standard_Boolean, -- Not 383 Universal_Integer); -- Add 384 385 begin 386 for J in S_Binary_Ops loop 387 Op_Node := New_Operator (Binary_Ops (J), Bin_Op_Types (J)); 388 SE (J) := Op_Node; 389 Append_Entity (Make_Formal (Any_Type, "LEFT"), Op_Node); 390 Append_Entity (Make_Formal (Any_Type, "RIGHT"), Op_Node); 391 end loop; 392 393 for J in S_Unary_Ops loop 394 Op_Node := New_Operator (Unary_Ops (J), Unary_Op_Types (J)); 395 SE (J) := Op_Node; 396 Append_Entity (Make_Formal (Any_Type, "RIGHT"), Op_Node); 397 end loop; 398 399 -- For concatenation, we create a separate operator for each 400 -- array type. This simplifies the resolution of the component- 401 -- component concatenation operation. In Standard, we set the types 402 -- of the formals for string, wide [wide]_string, concatenations. 403 404 Set_Etype (First_Entity (Standard_Op_Concat), Standard_String); 405 Set_Etype (Last_Entity (Standard_Op_Concat), Standard_String); 406 407 Set_Etype (First_Entity (Standard_Op_Concatw), Standard_Wide_String); 408 Set_Etype (Last_Entity (Standard_Op_Concatw), Standard_Wide_String); 409 410 Set_Etype (First_Entity (Standard_Op_Concatww), 411 Standard_Wide_Wide_String); 412 413 Set_Etype (Last_Entity (Standard_Op_Concatww), 414 Standard_Wide_Wide_String); 415 end Create_Operators; 416 417 --------------------- 418 -- Create_Standard -- 419 --------------------- 420 421 -- The tree for the package Standard is prefixed to all compilations. 422 -- Several entities required by semantic analysis are denoted by global 423 -- variables that are initialized to point to the corresponding occurrences 424 -- in Standard. The visible entities of Standard are created here. Special 425 -- entities maybe created here as well or may be created from the semantics 426 -- module. By not adding them to the Decls list of Standard they will not 427 -- be visible to Ada programs. 428 429 procedure Create_Standard is 430 Decl_S : constant List_Id := New_List; 431 -- List of declarations in Standard 432 433 Decl_A : constant List_Id := New_List; 434 -- List of declarations in ASCII 435 436 Decl : Node_Id; 437 Pspec : Node_Id; 438 Tdef_Node : Node_Id; 439 Ident_Node : Node_Id; 440 Ccode : Char_Code; 441 E_Id : Entity_Id; 442 R_Node : Node_Id; 443 B_Node : Node_Id; 444 445 procedure Build_Exception (S : Standard_Entity_Type); 446 -- Procedure to declare given entity as an exception 447 448 procedure Create_Back_End_Float_Types; 449 -- Initialize the Back_End_Float_Types list by having the back end 450 -- enumerate all available types and building type entities for them. 451 452 procedure Create_Float_Types; 453 -- Creates entities for all predefined floating point types, and 454 -- adds these to the Predefined_Float_Types list in package Standard. 455 456 procedure Make_Dummy_Index (E : Entity_Id); 457 -- Called to provide a dummy index field value for Any_Array/Any_String 458 459 procedure Pack_String_Type (String_Type : Entity_Id); 460 -- Generate proper tree for pragma Pack that applies to given type, and 461 -- mark type as having the pragma. 462 463 --------------------- 464 -- Build_Exception -- 465 --------------------- 466 467 procedure Build_Exception (S : Standard_Entity_Type) is 468 begin 469 Mutate_Ekind (Standard_Entity (S), E_Exception); 470 Set_Etype (Standard_Entity (S), Standard_Exception_Type); 471 Set_Is_Public (Standard_Entity (S), True); 472 473 Decl := 474 Make_Exception_Declaration (Stloc, 475 Defining_Identifier => Standard_Entity (S)); 476 Append (Decl, Decl_S); 477 end Build_Exception; 478 479 --------------------------------- 480 -- Create_Back_End_Float_Types -- 481 --------------------------------- 482 483 procedure Create_Back_End_Float_Types is 484 begin 485 for J in 1 .. Num_FPT_Modes loop 486 declare 487 E : FPT_Mode_Entry renames FPT_Mode_Table (J); 488 begin 489 Register_Float_Type 490 (E.NAME.all, E.DIGS, E.FLOAT_REP, E.PRECISION, E.SIZE, 491 E.ALIGNMENT); 492 end; 493 end loop; 494 end Create_Back_End_Float_Types; 495 496 ------------------------ 497 -- Create_Float_Types -- 498 ------------------------ 499 500 procedure Create_Float_Types is 501 begin 502 -- Create type definition nodes for predefined float types 503 504 Copy_Float_Type 505 (Standard_Short_Float, 506 Find_Back_End_Float_Type (C_Type_For (S_Short_Float))); 507 Set_Is_Implementation_Defined (Standard_Short_Float); 508 509 Copy_Float_Type (Standard_Float, Standard_Short_Float); 510 511 Copy_Float_Type 512 (Standard_Long_Float, 513 Find_Back_End_Float_Type (C_Type_For (S_Long_Float))); 514 515 Copy_Float_Type 516 (Standard_Long_Long_Float, 517 Find_Back_End_Float_Type (C_Type_For (S_Long_Long_Float))); 518 Set_Is_Implementation_Defined (Standard_Long_Long_Float); 519 520 Predefined_Float_Types := New_Elmt_List; 521 522 Append_Elmt (Standard_Short_Float, Predefined_Float_Types); 523 Append_Elmt (Standard_Float, Predefined_Float_Types); 524 Append_Elmt (Standard_Long_Float, Predefined_Float_Types); 525 Append_Elmt (Standard_Long_Long_Float, Predefined_Float_Types); 526 527 -- Any other back end types are appended at the end of the list of 528 -- predefined float types, and will only be selected if the none of 529 -- the types in Standard is suitable, or if a specific named type is 530 -- requested through a pragma Import. 531 532 while not Is_Empty_Elmt_List (Back_End_Float_Types) loop 533 declare 534 E : constant Elmt_Id := First_Elmt (Back_End_Float_Types); 535 begin 536 Append_Elmt (Node (E), To => Predefined_Float_Types); 537 Remove_Elmt (Back_End_Float_Types, E); 538 end; 539 end loop; 540 end Create_Float_Types; 541 542 ---------------------- 543 -- Make_Dummy_Index -- 544 ---------------------- 545 546 procedure Make_Dummy_Index (E : Entity_Id) is 547 Index : constant Node_Id := 548 Make_Range (Sloc (E), 549 Low_Bound => Make_Integer (Uint_0), 550 High_Bound => Make_Integer (Uint_2 ** Standard_Integer_Size)); 551 552 -- Make sure Index is a list as required, so Next_Index is Empty 553 554 Dummy : constant List_Id := New_List (Index); 555 556 begin 557 Set_Etype (Index, Standard_Integer); 558 Set_First_Index (E, Index); 559 end Make_Dummy_Index; 560 561 ---------------------- 562 -- Pack_String_Type -- 563 ---------------------- 564 565 procedure Pack_String_Type (String_Type : Entity_Id) is 566 Prag : constant Node_Id := 567 Make_Pragma (Stloc, 568 Chars => Name_Pack, 569 Pragma_Argument_Associations => 570 New_List ( 571 Make_Pragma_Argument_Association (Stloc, 572 Expression => New_Occurrence_Of (String_Type, Stloc)))); 573 574 begin 575 Append (Prag, Decl_S); 576 Record_Rep_Item (String_Type, Prag); 577 Set_Has_Pragma_Pack (String_Type, True); 578 end Pack_String_Type; 579 580 Char_Size : constant Unat := UI_From_Int (Standard_Character_Size); 581 582 -- Start of processing for Create_Standard 583 584 begin 585 -- First step is to create defining identifiers for each entity 586 587 for S in Standard_Entity_Type loop 588 declare 589 S_Name : constant String := Standard_Entity_Type'Image (S); 590 -- Name of entity (note we skip S_ at the start) 591 592 Ident_Node : Node_Id; 593 -- Defining identifier node 594 595 begin 596 Ident_Node := New_Standard_Entity (S_Name (3 .. S_Name'Length)); 597 Standard_Entity (S) := Ident_Node; 598 end; 599 end loop; 600 601 -- Create package declaration node for package Standard 602 603 Standard_Package_Node := New_Node (N_Package_Declaration, Stloc); 604 605 Pspec := New_Node (N_Package_Specification, Stloc); 606 Set_Specification (Standard_Package_Node, Pspec); 607 608 Set_Defining_Unit_Name (Pspec, Standard_Standard); 609 Set_Visible_Declarations (Pspec, Decl_S); 610 611 Mutate_Ekind (Standard_Standard, E_Package); 612 Set_Is_Pure (Standard_Standard); 613 Set_Is_Compilation_Unit (Standard_Standard); 614 615 -- Create type/subtype declaration nodes for standard types 616 617 for S in S_Types loop 618 619 -- Subtype declaration case 620 621 if S = S_Natural or else S = S_Positive then 622 Decl := New_Node (N_Subtype_Declaration, Stloc); 623 Set_Subtype_Indication (Decl, 624 New_Occurrence_Of (Standard_Integer, Stloc)); 625 626 -- Full type declaration case 627 628 else 629 Decl := New_Node (N_Full_Type_Declaration, Stloc); 630 end if; 631 632 Set_Is_Frozen (Standard_Entity (S)); 633 Set_Is_Public (Standard_Entity (S)); 634 Set_Defining_Identifier (Decl, Standard_Entity (S)); 635 Append (Decl, Decl_S); 636 end loop; 637 638 Create_Back_End_Float_Types; 639 640 -- Create type definition node for type Boolean. The Size is set to 641 -- 1 as required by Ada 95 and current ARG interpretations for Ada/83. 642 643 -- Note: Object_Size of Boolean is 8. This means that we do NOT in 644 -- general know that Boolean variables have valid values, so we do 645 -- not set the Is_Known_Valid flag. 646 647 Tdef_Node := New_Node (N_Enumeration_Type_Definition, Stloc); 648 Set_Literals (Tdef_Node, New_List); 649 Append (Standard_False, Literals (Tdef_Node)); 650 Append (Standard_True, Literals (Tdef_Node)); 651 Set_Type_Definition (Parent (Standard_Boolean), Tdef_Node); 652 653 Mutate_Ekind (Standard_Boolean, E_Enumeration_Type); 654 Set_First_Literal (Standard_Boolean, Standard_False); 655 Set_Etype (Standard_Boolean, Standard_Boolean); 656 Set_Esize (Standard_Boolean, Char_Size); 657 Set_RM_Size (Standard_Boolean, Uint_1); 658 Set_Elem_Alignment (Standard_Boolean); 659 660 Set_Is_Unsigned_Type (Standard_Boolean); 661 Set_Size_Known_At_Compile_Time (Standard_Boolean); 662 Set_Has_Pragma_Ordered (Standard_Boolean); 663 664 Mutate_Ekind (Standard_True, E_Enumeration_Literal); 665 Set_Etype (Standard_True, Standard_Boolean); 666 Set_Enumeration_Pos (Standard_True, Uint_1); 667 Set_Enumeration_Rep (Standard_True, Uint_1); 668 Set_Is_Known_Valid (Standard_True, True); 669 670 Mutate_Ekind (Standard_False, E_Enumeration_Literal); 671 Set_Etype (Standard_False, Standard_Boolean); 672 Set_Enumeration_Pos (Standard_False, Uint_0); 673 Set_Enumeration_Rep (Standard_False, Uint_0); 674 Set_Is_Known_Valid (Standard_False, True); 675 676 -- For the bounds of Boolean, we create a range node corresponding to 677 678 -- range False .. True 679 680 -- where the occurrences of the literals must point to the 681 -- corresponding definition. 682 683 R_Node := New_Node (N_Range, Stloc); 684 B_Node := New_Node (N_Identifier, Stloc); 685 Set_Chars (B_Node, Chars (Standard_False)); 686 Set_Entity (B_Node, Standard_False); 687 Set_Etype (B_Node, Standard_Boolean); 688 Set_Is_Static_Expression (B_Node); 689 Set_Low_Bound (R_Node, B_Node); 690 691 B_Node := New_Node (N_Identifier, Stloc); 692 Set_Chars (B_Node, Chars (Standard_True)); 693 Set_Entity (B_Node, Standard_True); 694 Set_Etype (B_Node, Standard_Boolean); 695 Set_Is_Static_Expression (B_Node); 696 Set_High_Bound (R_Node, B_Node); 697 698 Set_Scalar_Range (Standard_Boolean, R_Node); 699 Set_Etype (R_Node, Standard_Boolean); 700 Set_Parent (R_Node, Standard_Boolean); 701 702 -- Record entity identifiers for boolean literals in the 703 -- Boolean_Literals array, for easy reference during expansion. 704 705 Boolean_Literals := (False => Standard_False, True => Standard_True); 706 707 -- Create type definition nodes for predefined integer types 708 709 Build_Signed_Integer_Type 710 (Standard_Short_Short_Integer, Standard_Short_Short_Integer_Size); 711 Set_Is_Implementation_Defined (Standard_Short_Short_Integer); 712 713 Build_Signed_Integer_Type 714 (Standard_Short_Integer, Standard_Short_Integer_Size); 715 Set_Is_Implementation_Defined (Standard_Short_Integer); 716 717 Build_Signed_Integer_Type 718 (Standard_Integer, Standard_Integer_Size); 719 720 Build_Signed_Integer_Type 721 (Standard_Long_Integer, Standard_Long_Integer_Size); 722 723 Build_Signed_Integer_Type 724 (Standard_Long_Long_Integer, Standard_Long_Long_Integer_Size); 725 Set_Is_Implementation_Defined (Standard_Long_Long_Integer); 726 727 Build_Signed_Integer_Type 728 (Standard_Long_Long_Long_Integer, 729 Standard_Long_Long_Long_Integer_Size); 730 Set_Is_Implementation_Defined (Standard_Long_Long_Long_Integer); 731 732 Create_Unconstrained_Base_Type 733 (Standard_Short_Short_Integer, E_Signed_Integer_Subtype); 734 735 Create_Unconstrained_Base_Type 736 (Standard_Short_Integer, E_Signed_Integer_Subtype); 737 738 Create_Unconstrained_Base_Type 739 (Standard_Integer, E_Signed_Integer_Subtype); 740 741 Create_Unconstrained_Base_Type 742 (Standard_Long_Integer, E_Signed_Integer_Subtype); 743 744 Create_Unconstrained_Base_Type 745 (Standard_Long_Long_Integer, E_Signed_Integer_Subtype); 746 747 Create_Unconstrained_Base_Type 748 (Standard_Long_Long_Long_Integer, E_Signed_Integer_Subtype); 749 750 Create_Float_Types; 751 752 -- Create type definition node for type Character. Note that we do not 753 -- set the Literals field, since type Character is handled with special 754 -- routine that do not need a literal list. 755 756 Tdef_Node := New_Node (N_Enumeration_Type_Definition, Stloc); 757 Set_Type_Definition (Parent (Standard_Character), Tdef_Node); 758 759 Mutate_Ekind (Standard_Character, E_Enumeration_Type); 760 Set_Etype (Standard_Character, Standard_Character); 761 Set_Esize (Standard_Character, Char_Size); 762 Set_RM_Size (Standard_Character, Uint_8); 763 Set_Elem_Alignment (Standard_Character); 764 765 Set_Has_Pragma_Ordered (Standard_Character); 766 Set_Is_Unsigned_Type (Standard_Character); 767 Set_Is_Character_Type (Standard_Character); 768 Set_Is_Known_Valid (Standard_Character); 769 Set_Size_Known_At_Compile_Time (Standard_Character); 770 771 -- Create the bounds for type Character 772 773 R_Node := New_Node (N_Range, Stloc); 774 775 -- Low bound for type Character (Standard.Nul) 776 777 B_Node := New_Node (N_Character_Literal, Stloc); 778 Set_Is_Static_Expression (B_Node); 779 Set_Chars (B_Node, No_Name); 780 Set_Char_Literal_Value (B_Node, Uint_0); 781 Set_Entity (B_Node, Empty); 782 Set_Etype (B_Node, Standard_Character); 783 Set_Low_Bound (R_Node, B_Node); 784 785 -- High bound for type Character 786 787 B_Node := New_Node (N_Character_Literal, Stloc); 788 Set_Is_Static_Expression (B_Node); 789 Set_Chars (B_Node, No_Name); 790 Set_Char_Literal_Value (B_Node, UI_From_Int (16#FF#)); 791 Set_Entity (B_Node, Empty); 792 Set_Etype (B_Node, Standard_Character); 793 Set_High_Bound (R_Node, B_Node); 794 795 Set_Scalar_Range (Standard_Character, R_Node); 796 Set_Etype (R_Node, Standard_Character); 797 Set_Parent (R_Node, Standard_Character); 798 799 -- Create type definition for type Wide_Character. Note that we do not 800 -- set the Literals field, since type Wide_Character is handled with 801 -- special routines that do not need a literal list. 802 803 Tdef_Node := New_Node (N_Enumeration_Type_Definition, Stloc); 804 Set_Type_Definition (Parent (Standard_Wide_Character), Tdef_Node); 805 806 Mutate_Ekind (Standard_Wide_Character, E_Enumeration_Type); 807 Set_Etype (Standard_Wide_Character, Standard_Wide_Character); 808 Init_Size (Standard_Wide_Character, Standard_Wide_Character_Size); 809 810 Set_Elem_Alignment (Standard_Wide_Character); 811 Set_Has_Pragma_Ordered (Standard_Wide_Character); 812 Set_Is_Unsigned_Type (Standard_Wide_Character); 813 Set_Is_Character_Type (Standard_Wide_Character); 814 Set_Is_Known_Valid (Standard_Wide_Character); 815 Set_Size_Known_At_Compile_Time (Standard_Wide_Character); 816 817 -- Create the bounds for type Wide_Character 818 819 R_Node := New_Node (N_Range, Stloc); 820 821 -- Low bound for type Wide_Character 822 823 B_Node := New_Node (N_Character_Literal, Stloc); 824 Set_Is_Static_Expression (B_Node); 825 Set_Chars (B_Node, No_Name); 826 Set_Char_Literal_Value (B_Node, Uint_0); 827 Set_Entity (B_Node, Empty); 828 Set_Etype (B_Node, Standard_Wide_Character); 829 Set_Low_Bound (R_Node, B_Node); 830 831 -- High bound for type Wide_Character 832 833 B_Node := New_Node (N_Character_Literal, Stloc); 834 Set_Is_Static_Expression (B_Node); 835 Set_Chars (B_Node, No_Name); 836 Set_Char_Literal_Value (B_Node, UI_From_Int (16#FFFF#)); 837 Set_Entity (B_Node, Empty); 838 Set_Etype (B_Node, Standard_Wide_Character); 839 Set_High_Bound (R_Node, B_Node); 840 841 Set_Scalar_Range (Standard_Wide_Character, R_Node); 842 Set_Etype (R_Node, Standard_Wide_Character); 843 Set_Parent (R_Node, Standard_Wide_Character); 844 845 -- Create type definition for type Wide_Wide_Character. Note that we 846 -- do not set the Literals field, since type Wide_Wide_Character is 847 -- handled with special routines that do not need a literal list. 848 849 Tdef_Node := New_Node (N_Enumeration_Type_Definition, Stloc); 850 Set_Type_Definition (Parent (Standard_Wide_Wide_Character), Tdef_Node); 851 852 Mutate_Ekind (Standard_Wide_Wide_Character, E_Enumeration_Type); 853 Set_Etype (Standard_Wide_Wide_Character, 854 Standard_Wide_Wide_Character); 855 Init_Size (Standard_Wide_Wide_Character, 856 Standard_Wide_Wide_Character_Size); 857 858 Set_Elem_Alignment (Standard_Wide_Wide_Character); 859 Set_Has_Pragma_Ordered (Standard_Wide_Wide_Character); 860 Set_Is_Unsigned_Type (Standard_Wide_Wide_Character); 861 Set_Is_Character_Type (Standard_Wide_Wide_Character); 862 Set_Is_Known_Valid (Standard_Wide_Wide_Character); 863 Set_Size_Known_At_Compile_Time (Standard_Wide_Wide_Character); 864 Set_Is_Ada_2005_Only (Standard_Wide_Wide_Character); 865 866 -- Create the bounds for type Wide_Wide_Character 867 868 R_Node := New_Node (N_Range, Stloc); 869 870 -- Low bound for type Wide_Wide_Character 871 872 B_Node := New_Node (N_Character_Literal, Stloc); 873 Set_Is_Static_Expression (B_Node); 874 Set_Chars (B_Node, No_Name); 875 Set_Char_Literal_Value (B_Node, Uint_0); 876 Set_Entity (B_Node, Empty); 877 Set_Etype (B_Node, Standard_Wide_Wide_Character); 878 Set_Low_Bound (R_Node, B_Node); 879 880 -- High bound for type Wide_Wide_Character 881 882 B_Node := New_Node (N_Character_Literal, Stloc); 883 Set_Is_Static_Expression (B_Node); 884 Set_Chars (B_Node, No_Name); 885 Set_Char_Literal_Value (B_Node, UI_From_Int (16#7FFF_FFFF#)); 886 Set_Entity (B_Node, Empty); 887 Set_Etype (B_Node, Standard_Wide_Wide_Character); 888 Set_High_Bound (R_Node, B_Node); 889 890 Set_Scalar_Range (Standard_Wide_Wide_Character, R_Node); 891 Set_Etype (R_Node, Standard_Wide_Wide_Character); 892 Set_Parent (R_Node, Standard_Wide_Wide_Character); 893 894 -- Create type definition node for type String 895 896 Tdef_Node := New_Node (N_Unconstrained_Array_Definition, Stloc); 897 898 declare 899 CompDef_Node : Node_Id; 900 begin 901 CompDef_Node := New_Node (N_Component_Definition, Stloc); 902 Set_Aliased_Present (CompDef_Node, False); 903 Set_Access_Definition (CompDef_Node, Empty); 904 Set_Subtype_Indication (CompDef_Node, Identifier_For (S_Character)); 905 Set_Component_Definition (Tdef_Node, CompDef_Node); 906 end; 907 908 Set_Subtype_Marks (Tdef_Node, New_List); 909 Append (Identifier_For (S_Positive), Subtype_Marks (Tdef_Node)); 910 Set_Type_Definition (Parent (Standard_String), Tdef_Node); 911 912 Mutate_Ekind (Standard_String, E_Array_Type); 913 Set_Etype (Standard_String, Standard_String); 914 Set_Component_Type (Standard_String, Standard_Character); 915 Set_Component_Size (Standard_String, Uint_8); 916 Reinit_Size_Align (Standard_String); 917 Set_Alignment (Standard_String, Uint_1); 918 Pack_String_Type (Standard_String); 919 920 -- On targets where a storage unit is larger than a byte, pragma Pack 921 -- has a real effect on the representation of type String, and the type 922 -- must be marked as having a nonstandard representation. 923 924 if System_Storage_Unit > Uint_8 then 925 Set_Has_Non_Standard_Rep (Standard_String); 926 Set_Has_Pragma_Pack (Standard_String); 927 end if; 928 929 -- Set index type of String 930 931 E_Id := 932 First (Subtype_Marks (Type_Definition (Parent (Standard_String)))); 933 Set_First_Index (Standard_String, E_Id); 934 Set_Entity (E_Id, Standard_Positive); 935 Set_Etype (E_Id, Standard_Positive); 936 937 -- Create type definition node for type Wide_String 938 939 Tdef_Node := New_Node (N_Unconstrained_Array_Definition, Stloc); 940 941 declare 942 CompDef_Node : Node_Id; 943 begin 944 CompDef_Node := New_Node (N_Component_Definition, Stloc); 945 Set_Aliased_Present (CompDef_Node, False); 946 Set_Access_Definition (CompDef_Node, Empty); 947 Set_Subtype_Indication (CompDef_Node, 948 Identifier_For (S_Wide_Character)); 949 Set_Component_Definition (Tdef_Node, CompDef_Node); 950 end; 951 952 Set_Subtype_Marks (Tdef_Node, New_List); 953 Append (Identifier_For (S_Positive), Subtype_Marks (Tdef_Node)); 954 Set_Type_Definition (Parent (Standard_Wide_String), Tdef_Node); 955 956 Mutate_Ekind (Standard_Wide_String, E_Array_Type); 957 Set_Etype (Standard_Wide_String, Standard_Wide_String); 958 Set_Component_Type (Standard_Wide_String, Standard_Wide_Character); 959 Set_Component_Size (Standard_Wide_String, Uint_16); 960 Reinit_Size_Align (Standard_Wide_String); 961 Pack_String_Type (Standard_Wide_String); 962 963 -- Set index type of Wide_String 964 965 E_Id := 966 First 967 (Subtype_Marks (Type_Definition (Parent (Standard_Wide_String)))); 968 Set_First_Index (Standard_Wide_String, E_Id); 969 Set_Entity (E_Id, Standard_Positive); 970 Set_Etype (E_Id, Standard_Positive); 971 972 -- Create type definition node for type Wide_Wide_String 973 974 Tdef_Node := New_Node (N_Unconstrained_Array_Definition, Stloc); 975 976 declare 977 CompDef_Node : Node_Id; 978 begin 979 CompDef_Node := New_Node (N_Component_Definition, Stloc); 980 Set_Aliased_Present (CompDef_Node, False); 981 Set_Access_Definition (CompDef_Node, Empty); 982 Set_Subtype_Indication (CompDef_Node, 983 Identifier_For (S_Wide_Wide_Character)); 984 Set_Component_Definition (Tdef_Node, CompDef_Node); 985 end; 986 987 Set_Subtype_Marks (Tdef_Node, New_List); 988 Append (Identifier_For (S_Positive), Subtype_Marks (Tdef_Node)); 989 Set_Type_Definition (Parent (Standard_Wide_Wide_String), Tdef_Node); 990 991 Mutate_Ekind (Standard_Wide_Wide_String, E_Array_Type); 992 Set_Etype (Standard_Wide_Wide_String, 993 Standard_Wide_Wide_String); 994 Set_Component_Type (Standard_Wide_Wide_String, 995 Standard_Wide_Wide_Character); 996 Set_Component_Size (Standard_Wide_Wide_String, Uint_32); 997 Reinit_Size_Align (Standard_Wide_Wide_String); 998 Set_Is_Ada_2005_Only (Standard_Wide_Wide_String); 999 Pack_String_Type (Standard_Wide_Wide_String); 1000 1001 -- Set index type of Wide_Wide_String 1002 1003 E_Id := 1004 First 1005 (Subtype_Marks 1006 (Type_Definition (Parent (Standard_Wide_Wide_String)))); 1007 Set_First_Index (Standard_Wide_Wide_String, E_Id); 1008 Set_Entity (E_Id, Standard_Positive); 1009 Set_Etype (E_Id, Standard_Positive); 1010 1011 -- Setup entity for Natural 1012 1013 Mutate_Ekind (Standard_Natural, E_Signed_Integer_Subtype); 1014 Set_Etype (Standard_Natural, Base_Type (Standard_Integer)); 1015 Set_Esize (Standard_Natural, UI_From_Int (Standard_Integer_Size)); 1016 Set_RM_Size (Standard_Natural, UI_From_Int (Standard_Integer_Size - 1)); 1017 Set_Elem_Alignment (Standard_Natural); 1018 Set_Size_Known_At_Compile_Time 1019 (Standard_Natural); 1020 Set_Integer_Bounds (Standard_Natural, 1021 Typ => Base_Type (Standard_Integer), 1022 Lb => Uint_0, 1023 Hb => Intval (High_Bound (Scalar_Range (Standard_Integer)))); 1024 Set_Is_Constrained (Standard_Natural); 1025 1026 -- Setup entity for Positive 1027 1028 Mutate_Ekind (Standard_Positive, E_Signed_Integer_Subtype); 1029 Set_Etype (Standard_Positive, Base_Type (Standard_Integer)); 1030 Set_Esize (Standard_Positive, UI_From_Int (Standard_Integer_Size)); 1031 Set_RM_Size 1032 (Standard_Positive, UI_From_Int (Standard_Integer_Size - 1)); 1033 Set_Elem_Alignment (Standard_Positive); 1034 1035 Set_Size_Known_At_Compile_Time (Standard_Positive); 1036 1037 Set_Integer_Bounds (Standard_Positive, 1038 Typ => Base_Type (Standard_Integer), 1039 Lb => Uint_1, 1040 Hb => Intval (High_Bound (Scalar_Range (Standard_Integer)))); 1041 Set_Is_Constrained (Standard_Positive); 1042 1043 -- Create declaration for package ASCII 1044 1045 Decl := New_Node (N_Package_Declaration, Stloc); 1046 Append (Decl, Decl_S); 1047 1048 Pspec := New_Node (N_Package_Specification, Stloc); 1049 Set_Specification (Decl, Pspec); 1050 1051 Set_Defining_Unit_Name (Pspec, Standard_Entity (S_ASCII)); 1052 Mutate_Ekind (Standard_Entity (S_ASCII), E_Package); 1053 Set_Visible_Declarations (Pspec, Decl_A); 1054 1055 -- Create control character definitions in package ASCII. Note that 1056 -- the character literal entries created here correspond to literal 1057 -- values that are impossible in the source, but can be represented 1058 -- internally with no difficulties. 1059 1060 Ccode := 16#00#; 1061 1062 for S in S_ASCII_Names loop 1063 Decl := New_Node (N_Object_Declaration, Staloc); 1064 Set_Constant_Present (Decl, True); 1065 1066 declare 1067 A_Char : constant Entity_Id := Standard_Entity (S); 1068 Expr_Decl : Node_Id; 1069 1070 begin 1071 Set_Sloc (A_Char, Staloc); 1072 Mutate_Ekind (A_Char, E_Constant); 1073 Set_Never_Set_In_Source (A_Char, True); 1074 Set_Is_True_Constant (A_Char, True); 1075 Set_Etype (A_Char, Standard_Character); 1076 Set_Scope (A_Char, Standard_Entity (S_ASCII)); 1077 Set_Is_Immediately_Visible (A_Char, False); 1078 Set_Is_Public (A_Char, True); 1079 Set_Is_Known_Valid (A_Char, True); 1080 1081 Append_Entity (A_Char, Standard_Entity (S_ASCII)); 1082 Set_Defining_Identifier (Decl, A_Char); 1083 1084 Set_Object_Definition (Decl, Identifier_For (S_Character)); 1085 Expr_Decl := New_Node (N_Character_Literal, Staloc); 1086 Set_Expression (Decl, Expr_Decl); 1087 1088 Set_Is_Static_Expression (Expr_Decl); 1089 Set_Chars (Expr_Decl, No_Name); 1090 Set_Etype (Expr_Decl, Standard_Character); 1091 Set_Char_Literal_Value (Expr_Decl, UI_From_Int (Int (Ccode))); 1092 end; 1093 1094 Append (Decl, Decl_A); 1095 1096 -- Increment character code, dealing with non-contiguities 1097 1098 Ccode := Ccode + 1; 1099 1100 if Ccode = 16#20# then 1101 Ccode := 16#21#; 1102 elsif Ccode = 16#27# then 1103 Ccode := 16#3A#; 1104 elsif Ccode = 16#3C# then 1105 Ccode := 16#3F#; 1106 elsif Ccode = 16#41# then 1107 Ccode := 16#5B#; 1108 end if; 1109 end loop; 1110 1111 -- Create semantic phase entities 1112 1113 Standard_Void_Type := New_Standard_Entity ("_void_type"); 1114 pragma Assert (Ekind (Standard_Void_Type) = E_Void); -- it's the default 1115 Set_Etype (Standard_Void_Type, Standard_Void_Type); 1116 Set_Scope (Standard_Void_Type, Standard_Standard); 1117 1118 -- The type field of packages is set to void 1119 1120 Set_Etype (Standard_Standard, Standard_Void_Type); 1121 Set_Etype (Standard_ASCII, Standard_Void_Type); 1122 1123 -- Standard_A_String is actually used in generated code, so it has a 1124 -- type name that is reasonable, but does not overlap any Ada name. 1125 1126 Standard_A_String := New_Standard_Entity ("access_string"); 1127 Mutate_Ekind (Standard_A_String, E_Access_Type); 1128 Set_Scope (Standard_A_String, Standard_Standard); 1129 Set_Etype (Standard_A_String, Standard_A_String); 1130 1131 if Debug_Flag_6 then 1132 Init_Size (Standard_A_String, System_Address_Size); 1133 else 1134 Init_Size (Standard_A_String, System_Address_Size * 2); 1135 end if; 1136 1137 pragma Assert (not Known_Alignment (Standard_A_String)); 1138 1139 Set_Directly_Designated_Type 1140 (Standard_A_String, Standard_String); 1141 1142 Standard_A_Char := New_Standard_Entity ("access_character"); 1143 Mutate_Ekind (Standard_A_Char, E_Access_Type); 1144 Set_Scope (Standard_A_Char, Standard_Standard); 1145 Set_Etype (Standard_A_Char, Standard_A_String); 1146 Init_Size (Standard_A_Char, System_Address_Size); 1147 Set_Elem_Alignment (Standard_A_Char); 1148 1149 Set_Directly_Designated_Type (Standard_A_Char, Standard_Character); 1150 1151 -- Standard_Debug_Renaming_Type is used for the special objects created 1152 -- to encode the names occurring in renaming declarations for use by the 1153 -- debugger (see exp_dbug.adb). The type is a zero-sized subtype of 1154 -- Standard.Integer. 1155 1156 Standard_Debug_Renaming_Type := New_Standard_Entity ("_renaming_type"); 1157 1158 Mutate_Ekind (Standard_Debug_Renaming_Type, E_Signed_Integer_Subtype); 1159 Set_Scope (Standard_Debug_Renaming_Type, Standard_Standard); 1160 Set_Etype (Standard_Debug_Renaming_Type, Base_Type (Standard_Integer)); 1161 Set_Esize (Standard_Debug_Renaming_Type, Uint_0); 1162 Set_RM_Size (Standard_Debug_Renaming_Type, Uint_0); 1163 Set_Size_Known_At_Compile_Time (Standard_Debug_Renaming_Type); 1164 Set_Integer_Bounds (Standard_Debug_Renaming_Type, 1165 Typ => Base_Type (Standard_Debug_Renaming_Type), 1166 Lb => Uint_1, 1167 Hb => Uint_0); 1168 Set_Is_Constrained (Standard_Debug_Renaming_Type); 1169 Set_Has_Size_Clause (Standard_Debug_Renaming_Type); 1170 1171 -- Note on type names. The type names for the following special types 1172 -- are constructed so that they will look reasonable should they ever 1173 -- appear in error messages etc, although in practice the use of the 1174 -- special insertion character } for types results in special handling 1175 -- of these type names in any case. The blanks in these names would 1176 -- trouble in Gigi, but that's OK here, since none of these types 1177 -- should ever get through to Gigi. Attributes of these types are 1178 -- filled out to minimize problems with cascaded errors (for example, 1179 -- Any_Integer is given reasonable and consistent type and size values) 1180 1181 Any_Type := New_Standard_Entity ("any type"); 1182 Decl := New_Node (N_Full_Type_Declaration, Stloc); 1183 Set_Defining_Identifier (Decl, Any_Type); 1184 Set_Scope (Any_Type, Standard_Standard); 1185 Build_Signed_Integer_Type (Any_Type, Standard_Integer_Size); 1186 1187 Any_Id := New_Standard_Entity ("any id"); 1188 Mutate_Ekind (Any_Id, E_Variable); 1189 Set_Scope (Any_Id, Standard_Standard); 1190 Set_Etype (Any_Id, Any_Type); 1191 pragma Assert (not Known_Esize (Any_Id)); 1192 pragma Assert (not Known_Alignment (Any_Id)); 1193 1194 Any_Access := New_Standard_Entity ("an access type"); 1195 Mutate_Ekind (Any_Access, E_Access_Type); 1196 Set_Scope (Any_Access, Standard_Standard); 1197 Set_Etype (Any_Access, Any_Access); 1198 Init_Size (Any_Access, System_Address_Size); 1199 Set_Elem_Alignment (Any_Access); 1200 Set_Directly_Designated_Type 1201 (Any_Access, Any_Type); 1202 1203 Any_Character := New_Standard_Entity ("a character type"); 1204 Mutate_Ekind (Any_Character, E_Enumeration_Type); 1205 Set_Scope (Any_Character, Standard_Standard); 1206 Set_Etype (Any_Character, Any_Character); 1207 Set_Is_Unsigned_Type (Any_Character); 1208 Set_Is_Character_Type (Any_Character); 1209 Set_Esize (Any_Character, Char_Size); 1210 Set_RM_Size (Any_Character, Uint_8); 1211 Set_Elem_Alignment (Any_Character); 1212 Set_Scalar_Range (Any_Character, Scalar_Range (Standard_Character)); 1213 1214 Any_Array := New_Standard_Entity ("an array type"); 1215 Mutate_Ekind (Any_Array, E_Array_Type); 1216 Set_Scope (Any_Array, Standard_Standard); 1217 Set_Etype (Any_Array, Any_Array); 1218 Set_Component_Type (Any_Array, Any_Character); 1219 Reinit_Size_Align (Any_Array); 1220 Make_Dummy_Index (Any_Array); 1221 1222 Any_Boolean := New_Standard_Entity ("a boolean type"); 1223 Mutate_Ekind (Any_Boolean, E_Enumeration_Type); 1224 Set_Scope (Any_Boolean, Standard_Standard); 1225 Set_Etype (Any_Boolean, Standard_Boolean); 1226 Set_Esize (Any_Boolean, Char_Size); 1227 Set_RM_Size (Any_Boolean, Uint_1); 1228 Set_Elem_Alignment (Any_Boolean); 1229 Set_Is_Unsigned_Type (Any_Boolean); 1230 Set_Scalar_Range (Any_Boolean, Scalar_Range (Standard_Boolean)); 1231 1232 Any_Composite := New_Standard_Entity ("a composite type"); 1233 Mutate_Ekind (Any_Composite, E_Array_Type); 1234 Set_Scope (Any_Composite, Standard_Standard); 1235 Set_Etype (Any_Composite, Any_Composite); 1236 Set_Component_Type (Any_Composite, Standard_Integer); 1237 Reinit_Size_Align (Any_Composite); 1238 1239 pragma Assert (not Known_Component_Size (Any_Composite)); 1240 1241 Any_Discrete := New_Standard_Entity ("a discrete type"); 1242 Mutate_Ekind (Any_Discrete, E_Signed_Integer_Type); 1243 Set_Scope (Any_Discrete, Standard_Standard); 1244 Set_Etype (Any_Discrete, Any_Discrete); 1245 Init_Size (Any_Discrete, Standard_Integer_Size); 1246 Set_Elem_Alignment (Any_Discrete); 1247 1248 Any_Fixed := New_Standard_Entity ("a fixed-point type"); 1249 Mutate_Ekind (Any_Fixed, E_Ordinary_Fixed_Point_Type); 1250 Set_Scope (Any_Fixed, Standard_Standard); 1251 Set_Etype (Any_Fixed, Any_Fixed); 1252 Init_Size (Any_Fixed, Standard_Integer_Size); 1253 Set_Elem_Alignment (Any_Fixed); 1254 1255 Any_Integer := New_Standard_Entity ("an integer type"); 1256 Mutate_Ekind (Any_Integer, E_Signed_Integer_Type); 1257 Set_Scope (Any_Integer, Standard_Standard); 1258 Set_Etype (Any_Integer, Standard_Long_Long_Long_Integer); 1259 Init_Size (Any_Integer, Standard_Long_Long_Long_Integer_Size); 1260 Set_Elem_Alignment (Any_Integer); 1261 1262 Set_Integer_Bounds 1263 (Any_Integer, 1264 Typ => Base_Type (Standard_Integer), 1265 Lb => Uint_0, 1266 Hb => Intval (High_Bound (Scalar_Range (Standard_Integer)))); 1267 1268 Any_Modular := New_Standard_Entity ("a modular type"); 1269 Mutate_Ekind (Any_Modular, E_Modular_Integer_Type); 1270 Set_Scope (Any_Modular, Standard_Standard); 1271 Set_Etype (Any_Modular, Standard_Long_Long_Long_Integer); 1272 Init_Size (Any_Modular, Standard_Long_Long_Long_Integer_Size); 1273 Set_Elem_Alignment (Any_Modular); 1274 Set_Is_Unsigned_Type (Any_Modular); 1275 1276 Any_Numeric := New_Standard_Entity ("a numeric type"); 1277 Mutate_Ekind (Any_Numeric, E_Signed_Integer_Type); 1278 Set_Scope (Any_Numeric, Standard_Standard); 1279 Set_Etype (Any_Numeric, Standard_Long_Long_Long_Integer); 1280 Init_Size (Any_Numeric, Standard_Long_Long_Long_Integer_Size); 1281 Set_Elem_Alignment (Any_Numeric); 1282 1283 Any_Real := New_Standard_Entity ("a real type"); 1284 Mutate_Ekind (Any_Real, E_Floating_Point_Type); 1285 Set_Scope (Any_Real, Standard_Standard); 1286 Set_Etype (Any_Real, Standard_Long_Long_Float); 1287 Init_Size (Any_Real, 1288 UI_To_Int (Esize (Standard_Long_Long_Float))); 1289 Set_Elem_Alignment (Any_Real); 1290 1291 Any_Scalar := New_Standard_Entity ("a scalar type"); 1292 Mutate_Ekind (Any_Scalar, E_Signed_Integer_Type); 1293 Set_Scope (Any_Scalar, Standard_Standard); 1294 Set_Etype (Any_Scalar, Any_Scalar); 1295 Init_Size (Any_Scalar, Standard_Integer_Size); 1296 Set_Elem_Alignment (Any_Scalar); 1297 1298 Any_String := New_Standard_Entity ("a string type"); 1299 Mutate_Ekind (Any_String, E_Array_Type); 1300 Set_Scope (Any_String, Standard_Standard); 1301 Set_Etype (Any_String, Any_String); 1302 Set_Component_Type (Any_String, Any_Character); 1303 Reinit_Size_Align (Any_String); 1304 Make_Dummy_Index (Any_String); 1305 1306 Raise_Type := New_Standard_Entity ("raise type"); 1307 Decl := New_Node (N_Full_Type_Declaration, Stloc); 1308 Set_Defining_Identifier (Decl, Raise_Type); 1309 Set_Scope (Raise_Type, Standard_Standard); 1310 Build_Signed_Integer_Type (Raise_Type, Standard_Integer_Size); 1311 1312 Standard_Integer_8 := New_Standard_Entity ("integer_8"); 1313 Decl := New_Node (N_Full_Type_Declaration, Stloc); 1314 Set_Defining_Identifier (Decl, Standard_Integer_8); 1315 Set_Scope (Standard_Integer_8, Standard_Standard); 1316 Build_Signed_Integer_Type (Standard_Integer_8, 8); 1317 1318 Standard_Integer_16 := New_Standard_Entity ("integer_16"); 1319 Decl := New_Node (N_Full_Type_Declaration, Stloc); 1320 Set_Defining_Identifier (Decl, Standard_Integer_16); 1321 Set_Scope (Standard_Integer_16, Standard_Standard); 1322 Build_Signed_Integer_Type (Standard_Integer_16, 16); 1323 1324 Standard_Integer_32 := New_Standard_Entity ("integer_32"); 1325 Decl := New_Node (N_Full_Type_Declaration, Stloc); 1326 Set_Defining_Identifier (Decl, Standard_Integer_32); 1327 Set_Scope (Standard_Integer_32, Standard_Standard); 1328 Build_Signed_Integer_Type (Standard_Integer_32, 32); 1329 1330 Standard_Integer_64 := New_Standard_Entity ("integer_64"); 1331 Decl := New_Node (N_Full_Type_Declaration, Stloc); 1332 Set_Defining_Identifier (Decl, Standard_Integer_64); 1333 Set_Scope (Standard_Integer_64, Standard_Standard); 1334 Build_Signed_Integer_Type (Standard_Integer_64, 64); 1335 1336 Standard_Integer_128 := New_Standard_Entity ("integer_128"); 1337 Decl := New_Node (N_Full_Type_Declaration, Stloc); 1338 Set_Defining_Identifier (Decl, Standard_Integer_128); 1339 Set_Scope (Standard_Integer_128, Standard_Standard); 1340 Build_Signed_Integer_Type (Standard_Integer_128, 128); 1341 1342 -- Standard_*_Unsigned subtypes are not user visible, but they are 1343 -- used internally. They are unsigned types with the same length as 1344 -- the correspondingly named signed integer types. 1345 1346 Standard_Short_Short_Unsigned 1347 := New_Standard_Entity ("short_short_unsigned"); 1348 Build_Unsigned_Integer_Type 1349 (Standard_Short_Short_Unsigned, Standard_Short_Short_Integer_Size); 1350 1351 Standard_Short_Unsigned := New_Standard_Entity ("short_unsigned"); 1352 Build_Unsigned_Integer_Type 1353 (Standard_Short_Unsigned, Standard_Short_Integer_Size); 1354 1355 Standard_Unsigned := New_Standard_Entity ("unsigned"); 1356 Build_Unsigned_Integer_Type 1357 (Standard_Unsigned, Standard_Integer_Size); 1358 1359 Standard_Long_Unsigned := New_Standard_Entity ("long_unsigned"); 1360 Build_Unsigned_Integer_Type 1361 (Standard_Long_Unsigned, Standard_Long_Integer_Size); 1362 1363 Standard_Long_Long_Unsigned := 1364 New_Standard_Entity ("long_long_unsigned"); 1365 Build_Unsigned_Integer_Type 1366 (Standard_Long_Long_Unsigned, Standard_Long_Long_Integer_Size); 1367 1368 Standard_Long_Long_Long_Unsigned := 1369 New_Standard_Entity ("long_long_long_unsigned"); 1370 Build_Unsigned_Integer_Type 1371 (Standard_Long_Long_Long_Unsigned, 1372 Standard_Long_Long_Long_Integer_Size); 1373 1374 -- Standard_Unsigned_64 is not user visible, but is used internally. It 1375 -- is an unsigned type mod 2**64 with 64 bits size. 1376 1377 Standard_Unsigned_64 := New_Standard_Entity ("unsigned_64"); 1378 Build_Unsigned_Integer_Type (Standard_Unsigned_64, 64); 1379 1380 -- Standard_Address is not user visible, but is used internally. It is 1381 -- an unsigned type mod 2**System_Address_Size with System.Address size. 1382 1383 Standard_Address := New_Standard_Entity ("standard_address"); 1384 Build_Unsigned_Integer_Type (Standard_Address, System_Address_Size); 1385 1386 -- Note: universal integer and universal real are constructed as fully 1387 -- formed signed numeric types, with parameters corresponding to the 1388 -- longest runtime types (Long_Long_Long_Integer and Long_Long_Float). 1389 -- This allows Gigi to properly process references to universal types 1390 -- that are not folded at compile time. 1391 1392 Universal_Integer := New_Standard_Entity ("universal_integer"); 1393 Decl := New_Node (N_Full_Type_Declaration, Stloc); 1394 Set_Defining_Identifier (Decl, Universal_Integer); 1395 Set_Scope (Universal_Integer, Standard_Standard); 1396 Build_Signed_Integer_Type 1397 (Universal_Integer, Standard_Long_Long_Long_Integer_Size); 1398 1399 Universal_Real := New_Standard_Entity ("universal_real"); 1400 Decl := New_Node (N_Full_Type_Declaration, Stloc); 1401 Set_Defining_Identifier (Decl, Universal_Real); 1402 Set_Scope (Universal_Real, Standard_Standard); 1403 Copy_Float_Type (Universal_Real, Standard_Long_Long_Float); 1404 1405 -- Note: universal fixed, unlike universal integer and universal real, 1406 -- is never used at runtime, so it does not need to have bounds set. 1407 1408 Universal_Fixed := New_Standard_Entity ("universal_fixed"); 1409 Decl := New_Node (N_Full_Type_Declaration, Stloc); 1410 Set_Defining_Identifier (Decl, Universal_Fixed); 1411 Mutate_Ekind (Universal_Fixed, E_Ordinary_Fixed_Point_Type); 1412 Set_Etype (Universal_Fixed, Universal_Fixed); 1413 Set_Scope (Universal_Fixed, Standard_Standard); 1414 Init_Size (Universal_Fixed, Standard_Long_Long_Integer_Size); 1415 Set_Elem_Alignment (Universal_Fixed); 1416 Set_Size_Known_At_Compile_Time 1417 (Universal_Fixed); 1418 1419 -- Create type declaration for Duration, using a 64-bit size. The 1420 -- delta and size values depend on the mode set in system.ads. 1421 1422 Build_Duration : declare 1423 Dlo : Uint; 1424 Dhi : Uint; 1425 Delta_Val : Ureal; 1426 1427 begin 1428 -- In 32 bit mode, the size is 32 bits, and the delta and 1429 -- small values are set to 20 milliseconds (20.0*(10.0**(-3)). 1430 1431 if Duration_32_Bits_On_Target then 1432 Dlo := Intval (Type_Low_Bound (Standard_Integer_32)); 1433 Dhi := Intval (Type_High_Bound (Standard_Integer_32)); 1434 Delta_Val := UR_From_Components (UI_From_Int (20), Uint_3, 10); 1435 1436 -- In 64-bit mode, the size is 64-bits and the delta and 1437 -- small values are set to nanoseconds (1.0*(10.0**(-9)). 1438 1439 else 1440 Dlo := Intval (Type_Low_Bound (Standard_Integer_64)); 1441 Dhi := Intval (Type_High_Bound (Standard_Integer_64)); 1442 Delta_Val := UR_From_Components (Uint_1, Uint_9, 10); 1443 end if; 1444 1445 Tdef_Node := Make_Ordinary_Fixed_Point_Definition (Stloc, 1446 Delta_Expression => Make_Real_Literal (Stloc, Delta_Val), 1447 Real_Range_Specification => 1448 Make_Real_Range_Specification (Stloc, 1449 Low_Bound => Make_Real_Literal (Stloc, 1450 Realval => Dlo * Delta_Val), 1451 High_Bound => Make_Real_Literal (Stloc, 1452 Realval => Dhi * Delta_Val))); 1453 1454 Set_Type_Definition (Parent (Standard_Duration), Tdef_Node); 1455 1456 Mutate_Ekind (Standard_Duration, E_Ordinary_Fixed_Point_Type); 1457 Set_Etype (Standard_Duration, Standard_Duration); 1458 1459 if Duration_32_Bits_On_Target then 1460 Init_Size (Standard_Duration, 32); 1461 else 1462 Init_Size (Standard_Duration, 64); 1463 end if; 1464 1465 Set_Elem_Alignment (Standard_Duration); 1466 Set_Delta_Value (Standard_Duration, Delta_Val); 1467 Set_Small_Value (Standard_Duration, Delta_Val); 1468 Set_Scalar_Range (Standard_Duration, 1469 Real_Range_Specification 1470 (Type_Definition (Parent (Standard_Duration)))); 1471 1472 -- Normally it does not matter that nodes in package Standard are 1473 -- not marked as analyzed. The Scalar_Range of the fixed-point type 1474 -- Standard_Duration is an exception, because of the special test 1475 -- made in Freeze.Freeze_Fixed_Point_Type. 1476 1477 Set_Analyzed (Scalar_Range (Standard_Duration)); 1478 1479 Set_Etype (Type_High_Bound (Standard_Duration), Standard_Duration); 1480 Set_Etype (Type_Low_Bound (Standard_Duration), Standard_Duration); 1481 1482 Set_Is_Static_Expression (Type_High_Bound (Standard_Duration)); 1483 Set_Is_Static_Expression (Type_Low_Bound (Standard_Duration)); 1484 1485 Set_Corresponding_Integer_Value 1486 (Type_High_Bound (Standard_Duration), Dhi); 1487 1488 Set_Corresponding_Integer_Value 1489 (Type_Low_Bound (Standard_Duration), Dlo); 1490 1491 Set_Size_Known_At_Compile_Time (Standard_Duration); 1492 end Build_Duration; 1493 1494 -- Build standard exception type. Note that the type name here is 1495 -- actually used in the generated code, so it must be set correctly. 1496 -- The type Standard_Exception_Type must be consistent with the type 1497 -- System.Standard_Library.Exception_Data, as the latter is what is 1498 -- known by the run-time. Components of the record are documented in 1499 -- the declaration in System.Standard_Library. 1500 1501 Build_Exception_Type : declare 1502 Comp_List : List_Id; 1503 Comp : Entity_Id; 1504 1505 begin 1506 Standard_Exception_Type := New_Standard_Entity ("exception"); 1507 Mutate_Ekind (Standard_Exception_Type, E_Record_Type); 1508 Set_Etype (Standard_Exception_Type, Standard_Exception_Type); 1509 Set_Scope (Standard_Exception_Type, Standard_Standard); 1510 Set_Stored_Constraint 1511 (Standard_Exception_Type, No_Elist); 1512 Set_Size_Known_At_Compile_Time 1513 (Standard_Exception_Type, True); 1514 1515 pragma Assert (not Known_RM_Size (Standard_Exception_Type)); 1516 1517 Make_Aliased_Component (Standard_Exception_Type, Standard_Boolean, 1518 "Not_Handled_By_Others"); 1519 Make_Aliased_Component (Standard_Exception_Type, Standard_Character, 1520 "Lang"); 1521 Make_Aliased_Component (Standard_Exception_Type, Standard_Natural, 1522 "Name_Length"); 1523 Make_Aliased_Component (Standard_Exception_Type, Standard_Address, 1524 "Full_Name"); 1525 Make_Aliased_Component (Standard_Exception_Type, Standard_A_Char, 1526 "HTable_Ptr"); 1527 Make_Aliased_Component (Standard_Exception_Type, Standard_Address, 1528 "Foreign_Data"); 1529 Make_Aliased_Component (Standard_Exception_Type, Standard_A_Char, 1530 "Raise_Hook"); 1531 1532 Layout_Type (Standard_Exception_Type); 1533 1534 -- Build tree for record declaration, for use by the back-end 1535 1536 Comp := First_Entity (Standard_Exception_Type); 1537 Comp_List := New_List; 1538 while Present (Comp) loop 1539 Append ( 1540 Make_Component_Declaration (Stloc, 1541 Defining_Identifier => Comp, 1542 Component_Definition => 1543 Make_Component_Definition (Stloc, 1544 Aliased_Present => True, 1545 Subtype_Indication => 1546 New_Occurrence_Of (Etype (Comp), Stloc))), 1547 Comp_List); 1548 1549 Next_Entity (Comp); 1550 end loop; 1551 1552 Decl := Make_Full_Type_Declaration (Stloc, 1553 Defining_Identifier => Standard_Exception_Type, 1554 Type_Definition => 1555 Make_Record_Definition (Stloc, 1556 End_Label => Empty, 1557 Component_List => 1558 Make_Component_List (Stloc, 1559 Component_Items => Comp_List))); 1560 1561 Append (Decl, Decl_S); 1562 end Build_Exception_Type; 1563 1564 -- Create declarations of standard exceptions 1565 1566 Build_Exception (S_Constraint_Error); 1567 Build_Exception (S_Program_Error); 1568 Build_Exception (S_Storage_Error); 1569 Build_Exception (S_Tasking_Error); 1570 1571 -- Numeric_Error is a normal exception in Ada 83, but in Ada 95 1572 -- it is a renaming of Constraint_Error. This test is too early since 1573 -- it doesn't handle pragma Ada_83. But it's not worth the trouble of 1574 -- fixing this. 1575 1576 if Ada_Version = Ada_83 then 1577 Build_Exception (S_Numeric_Error); 1578 1579 else 1580 Decl := New_Node (N_Exception_Renaming_Declaration, Stloc); 1581 E_Id := Standard_Entity (S_Numeric_Error); 1582 1583 Mutate_Ekind (E_Id, E_Exception); 1584 Set_Etype (E_Id, Standard_Exception_Type); 1585 Set_Is_Public (E_Id); 1586 Set_Renamed_Entity (E_Id, Standard_Entity (S_Constraint_Error)); 1587 1588 Set_Defining_Identifier (Decl, E_Id); 1589 Append (Decl, Decl_S); 1590 1591 Ident_Node := New_Node (N_Identifier, Stloc); 1592 Set_Chars (Ident_Node, Chars (Standard_Entity (S_Constraint_Error))); 1593 Set_Entity (Ident_Node, Standard_Entity (S_Constraint_Error)); 1594 Set_Name (Decl, Ident_Node); 1595 end if; 1596 1597 -- Abort_Signal is an entity that does not get made visible 1598 1599 Abort_Signal := New_Standard_Entity; 1600 Set_Chars (Abort_Signal, Name_uAbort_Signal); 1601 Mutate_Ekind (Abort_Signal, E_Exception); 1602 Set_Etype (Abort_Signal, Standard_Exception_Type); 1603 Set_Scope (Abort_Signal, Standard_Standard); 1604 Set_Is_Public (Abort_Signal, True); 1605 Decl := 1606 Make_Exception_Declaration (Stloc, 1607 Defining_Identifier => Abort_Signal); 1608 1609 -- Create defining identifiers for shift operator entities. Note 1610 -- that these entities are used only for marking shift operators 1611 -- generated internally, and hence need no structure, just a name 1612 -- and a unique identity. 1613 1614 Standard_Op_Rotate_Left := New_Standard_Entity; 1615 Set_Chars (Standard_Op_Rotate_Left, Name_Rotate_Left); 1616 Mutate_Ekind (Standard_Op_Rotate_Left, E_Operator); 1617 1618 Standard_Op_Rotate_Right := New_Standard_Entity; 1619 Set_Chars (Standard_Op_Rotate_Right, Name_Rotate_Right); 1620 Mutate_Ekind (Standard_Op_Rotate_Right, E_Operator); 1621 1622 Standard_Op_Shift_Left := New_Standard_Entity; 1623 Set_Chars (Standard_Op_Shift_Left, Name_Shift_Left); 1624 Mutate_Ekind (Standard_Op_Shift_Left, E_Operator); 1625 1626 Standard_Op_Shift_Right := New_Standard_Entity; 1627 Set_Chars (Standard_Op_Shift_Right, Name_Shift_Right); 1628 Mutate_Ekind (Standard_Op_Shift_Right, E_Operator); 1629 1630 Standard_Op_Shift_Right_Arithmetic := New_Standard_Entity; 1631 Set_Chars (Standard_Op_Shift_Right_Arithmetic, 1632 Name_Shift_Right_Arithmetic); 1633 Mutate_Ekind (Standard_Op_Shift_Right_Arithmetic, 1634 E_Operator); 1635 1636 -- Create standard operator declarations 1637 1638 Create_Operators; 1639 1640 -- Initialize visibility table with entities in Standard 1641 1642 for E in Standard_Entity_Type loop 1643 if Ekind (Standard_Entity (E)) /= E_Operator then 1644 Set_Name_Entity_Id 1645 (Chars (Standard_Entity (E)), Standard_Entity (E)); 1646 Set_Homonym (Standard_Entity (E), Empty); 1647 end if; 1648 1649 if E not in S_ASCII_Names then 1650 Set_Scope (Standard_Entity (E), Standard_Standard); 1651 Set_Is_Immediately_Visible (Standard_Entity (E)); 1652 end if; 1653 end loop; 1654 1655 -- The predefined package Standard itself does not have a scope; 1656 -- it is the only entity in the system not to have one, and this 1657 -- is what identifies the package to Gigi. 1658 1659 Set_Scope (Standard_Standard, Empty); 1660 1661 -- Set global variables indicating last Id values and version 1662 1663 Last_Standard_Node_Id := Last_Node_Id; 1664 Last_Standard_List_Id := Last_List_Id; 1665 1666 -- The Error node has an Etype of Any_Type to help error recovery 1667 1668 Set_Etype (Error, Any_Type); 1669 1670 -- Print representation of standard if switch set 1671 1672 if Opt.Print_Standard then 1673 Print_Standard; 1674 end if; 1675 end Create_Standard; 1676 1677 ------------------------------------ 1678 -- Create_Unconstrained_Base_Type -- 1679 ------------------------------------ 1680 1681 procedure Create_Unconstrained_Base_Type 1682 (E : Entity_Id; 1683 K : Entity_Kind) 1684 is 1685 New_Ent : constant Entity_Id := New_Copy (E); 1686 1687 begin 1688 Mutate_Ekind (E, K); 1689 Set_Is_Constrained (E, True); 1690 Set_Is_First_Subtype (E, True); 1691 Set_Etype (E, New_Ent); 1692 1693 Append_Entity (New_Ent, Standard_Standard); 1694 Set_Is_Constrained (New_Ent, False); 1695 Set_Etype (New_Ent, New_Ent); 1696 Set_Is_Known_Valid (New_Ent, True); 1697 1698 if K = E_Signed_Integer_Subtype then 1699 Set_Etype (Low_Bound (Scalar_Range (E)), New_Ent); 1700 Set_Etype (High_Bound (Scalar_Range (E)), New_Ent); 1701 end if; 1702 end Create_Unconstrained_Base_Type; 1703 1704 -------------------- 1705 -- Identifier_For -- 1706 -------------------- 1707 1708 function Identifier_For (S : Standard_Entity_Type) return Node_Id is 1709 Ident_Node : constant Node_Id := New_Node (N_Identifier, Stloc); 1710 1711 begin 1712 Set_Chars (Ident_Node, Chars (Standard_Entity (S))); 1713 Set_Entity (Ident_Node, Standard_Entity (S)); 1714 1715 return Ident_Node; 1716 end Identifier_For; 1717 1718 ---------------------------- 1719 -- Make_Aliased_Component -- 1720 ---------------------------- 1721 1722 procedure Make_Aliased_Component 1723 (Rec : Entity_Id; 1724 Typ : Entity_Id; 1725 Nam : String) 1726 is 1727 Id : constant Entity_Id := New_Standard_Entity (Nam); 1728 1729 begin 1730 Mutate_Ekind (Id, E_Component); 1731 Set_Etype (Id, Typ); 1732 Set_Scope (Id, Rec); 1733 Reinit_Component_Location (Id); 1734 Set_Original_Record_Component (Id, Id); 1735 Set_Is_Aliased (Id); 1736 Set_Is_Independent (Id); 1737 Append_Entity (Id, Rec); 1738 end Make_Aliased_Component; 1739 1740 ----------------- 1741 -- Make_Formal -- 1742 ----------------- 1743 1744 function Make_Formal (Typ : Entity_Id; Nam : String) return Entity_Id is 1745 Formal : constant Entity_Id := New_Standard_Entity (Nam); 1746 1747 begin 1748 Mutate_Ekind (Formal, E_In_Parameter); 1749 Set_Mechanism (Formal, Default_Mechanism); 1750 Set_Scope (Formal, Standard_Standard); 1751 Set_Etype (Formal, Typ); 1752 1753 return Formal; 1754 end Make_Formal; 1755 1756 ------------------ 1757 -- Make_Integer -- 1758 ------------------ 1759 1760 function Make_Integer (V : Uint) return Node_Id is 1761 N : constant Node_Id := Make_Integer_Literal (Stloc, V); 1762 1763 begin 1764 Set_Is_Static_Expression (N); 1765 1766 return N; 1767 end Make_Integer; 1768 1769 ------------------ 1770 -- New_Operator -- 1771 ------------------ 1772 1773 function New_Operator (Op : Name_Id; Typ : Entity_Id) return Entity_Id is 1774 Ident_Node : constant Entity_Id := Make_Defining_Identifier (Stloc, Op); 1775 1776 begin 1777 Set_Is_Pure (Ident_Node, True); 1778 Mutate_Ekind (Ident_Node, E_Operator); 1779 Set_Etype (Ident_Node, Typ); 1780 Set_Scope (Ident_Node, Standard_Standard); 1781 Set_Homonym (Ident_Node, Get_Name_Entity_Id (Op)); 1782 Set_Convention (Ident_Node, Convention_Intrinsic); 1783 1784 Set_Is_Immediately_Visible (Ident_Node, True); 1785 Set_Is_Intrinsic_Subprogram (Ident_Node, True); 1786 1787 Set_Name_Entity_Id (Op, Ident_Node); 1788 Append_Entity (Ident_Node, Standard_Standard); 1789 1790 return Ident_Node; 1791 end New_Operator; 1792 1793 ------------------------- 1794 -- New_Standard_Entity -- 1795 ------------------------- 1796 1797 function New_Standard_Entity return Entity_Id 1798 is 1799 E : constant Entity_Id := New_Entity (N_Defining_Identifier, Stloc); 1800 1801 begin 1802 -- All standard entities are Pure and Public 1803 1804 Set_Is_Pure (E); 1805 Set_Is_Public (E); 1806 1807 -- All standard entity names are analyzed manually, and are thus 1808 -- frozen as soon as they are created. 1809 1810 Set_Is_Frozen (E); 1811 1812 -- Set debug information required for all standard types 1813 1814 Set_Needs_Debug_Info (E); 1815 1816 -- All standard entities are built with fully qualified names, so 1817 -- set the flag to prevent an abortive attempt at requalification. 1818 1819 Set_Has_Qualified_Name (E); 1820 1821 -- Return newly created entity to be completed by caller 1822 1823 return E; 1824 end New_Standard_Entity; 1825 1826 function New_Standard_Entity (Nam : String) return Entity_Id is 1827 Ent : constant Entity_Id := New_Standard_Entity; 1828 1829 begin 1830 for J in 1 .. Nam'Length loop 1831 Name_Buffer (J) := Fold_Lower (Nam (Nam'First + (J - 1))); 1832 end loop; 1833 1834 Name_Len := Nam'Length; 1835 Set_Chars (Ent, Name_Find); 1836 1837 return Ent; 1838 end New_Standard_Entity; 1839 1840 -------------------- 1841 -- Print_Standard -- 1842 -------------------- 1843 1844 procedure Print_Standard is 1845 1846 procedure P (Item : String) renames Output.Write_Line; 1847 -- Short-hand, since we do a lot of line writes here 1848 1849 procedure P_Int_Range (Size : Pos); 1850 -- Prints the range of an integer based on its Size 1851 1852 procedure P_Float_Range (Id : Entity_Id); 1853 -- Prints the bounds range for the given float type entity 1854 1855 procedure P_Float_Type (Id : Entity_Id); 1856 -- Prints the type declaration of the given float type entity 1857 1858 procedure P_Mixed_Name (Id : Name_Id); 1859 -- Prints Id in mixed case 1860 1861 ------------------- 1862 -- P_Float_Range -- 1863 ------------------- 1864 1865 procedure P_Float_Range (Id : Entity_Id) is 1866 begin 1867 Write_Str (" range "); 1868 UR_Write (Realval (Type_Low_Bound (Id))); 1869 Write_Str (" .. "); 1870 UR_Write (Realval (Type_High_Bound (Id))); 1871 Write_Str (";"); 1872 Write_Eol; 1873 end P_Float_Range; 1874 1875 ------------------ 1876 -- P_Float_Type -- 1877 ------------------ 1878 1879 procedure P_Float_Type (Id : Entity_Id) is 1880 begin 1881 Write_Str (" type "); 1882 P_Mixed_Name (Chars (Id)); 1883 Write_Str (" is digits "); 1884 Write_Int (UI_To_Int (Digits_Value (Id))); 1885 Write_Eol; 1886 P_Float_Range (Id); 1887 Write_Str (" for "); 1888 P_Mixed_Name (Chars (Id)); 1889 Write_Str ("'Size use "); 1890 Write_Int (UI_To_Int (RM_Size (Id))); 1891 Write_Line (";"); 1892 Write_Eol; 1893 end P_Float_Type; 1894 1895 ----------------- 1896 -- P_Int_Range -- 1897 ----------------- 1898 1899 procedure P_Int_Range (Size : Pos) is 1900 begin 1901 Write_Str (" is range -(2 **"); 1902 Write_Int (Size - 1); 1903 Write_Str (")"); 1904 Write_Str (" .. +(2 **"); 1905 Write_Int (Size - 1); 1906 Write_Str (" - 1);"); 1907 Write_Eol; 1908 end P_Int_Range; 1909 1910 ------------------ 1911 -- P_Mixed_Name -- 1912 ------------------ 1913 1914 procedure P_Mixed_Name (Id : Name_Id) is 1915 begin 1916 Get_Name_String (Id); 1917 1918 for J in 1 .. Name_Len loop 1919 if J = 1 or else Name_Buffer (J - 1) = '_' then 1920 Name_Buffer (J) := Fold_Upper (Name_Buffer (J)); 1921 end if; 1922 end loop; 1923 1924 Write_Str (Name_Buffer (1 .. Name_Len)); 1925 end P_Mixed_Name; 1926 1927 -- Start of processing for Print_Standard 1928 1929 begin 1930 P ("-- Representation of package Standard"); 1931 Write_Eol; 1932 P ("-- This is not accurate Ada, since new base types cannot be "); 1933 P ("-- created, but the listing shows the target dependent"); 1934 P ("-- characteristics of the Standard types for this compiler"); 1935 Write_Eol; 1936 1937 P ("package Standard is"); 1938 P ("pragma Pure (Standard);"); 1939 Write_Eol; 1940 1941 P (" type Boolean is (False, True);"); 1942 P (" for Boolean'Size use 1;"); 1943 P (" for Boolean use (False => 0, True => 1);"); 1944 Write_Eol; 1945 1946 -- Integer types 1947 1948 Write_Str (" type Integer"); 1949 P_Int_Range (Standard_Integer_Size); 1950 Write_Str (" for Integer'Size use "); 1951 Write_Int (Standard_Integer_Size); 1952 P (";"); 1953 Write_Eol; 1954 1955 P (" subtype Natural is Integer range 0 .. Integer'Last;"); 1956 P (" subtype Positive is Integer range 1 .. Integer'Last;"); 1957 Write_Eol; 1958 1959 Write_Str (" type Short_Short_Integer"); 1960 P_Int_Range (Standard_Short_Short_Integer_Size); 1961 Write_Str (" for Short_Short_Integer'Size use "); 1962 Write_Int (Standard_Short_Short_Integer_Size); 1963 P (";"); 1964 Write_Eol; 1965 1966 Write_Str (" type Short_Integer"); 1967 P_Int_Range (Standard_Short_Integer_Size); 1968 Write_Str (" for Short_Integer'Size use "); 1969 Write_Int (Standard_Short_Integer_Size); 1970 P (";"); 1971 Write_Eol; 1972 1973 Write_Str (" type Long_Integer"); 1974 P_Int_Range (Standard_Long_Integer_Size); 1975 Write_Str (" for Long_Integer'Size use "); 1976 Write_Int (Standard_Long_Integer_Size); 1977 P (";"); 1978 Write_Eol; 1979 1980 Write_Str (" type Long_Long_Integer"); 1981 P_Int_Range (Standard_Long_Long_Integer_Size); 1982 Write_Str (" for Long_Long_Integer'Size use "); 1983 Write_Int (Standard_Long_Long_Integer_Size); 1984 P (";"); 1985 Write_Eol; 1986 1987 Write_Str (" type Long_Long_Long_Integer"); 1988 P_Int_Range (Standard_Long_Long_Long_Integer_Size); 1989 Write_Str (" for Long_Long_Long_Integer'Size use "); 1990 Write_Int (Standard_Long_Long_Long_Integer_Size); 1991 P (";"); 1992 Write_Eol; 1993 1994 -- Floating point types 1995 1996 P_Float_Type (Standard_Short_Float); 1997 P_Float_Type (Standard_Float); 1998 P_Float_Type (Standard_Long_Float); 1999 P_Float_Type (Standard_Long_Long_Float); 2000 2001 P (" type Character is (...)"); 2002 Write_Str (" for Character'Size use "); 2003 Write_Int (Standard_Character_Size); 2004 P (";"); 2005 P (" -- See RM A.1(35) for details of this type"); 2006 Write_Eol; 2007 2008 P (" type Wide_Character is (...)"); 2009 Write_Str (" for Wide_Character'Size use "); 2010 Write_Int (Standard_Wide_Character_Size); 2011 P (";"); 2012 P (" -- See RM A.1(36) for details of this type"); 2013 Write_Eol; 2014 2015 P (" type Wide_Wide_Character is (...)"); 2016 Write_Str (" for Wide_Wide_Character'Size use "); 2017 Write_Int (Standard_Wide_Wide_Character_Size); 2018 P (";"); 2019 P (" -- See RM A.1(36) for details of this type"); 2020 2021 P (" type String is array (Positive range <>) of Character;"); 2022 P (" pragma Pack (String);"); 2023 Write_Eol; 2024 2025 P (" type Wide_String is array (Positive range <>)" & 2026 " of Wide_Character;"); 2027 P (" pragma Pack (Wide_String);"); 2028 Write_Eol; 2029 2030 P (" type Wide_Wide_String is array (Positive range <>)" & 2031 " of Wide_Wide_Character;"); 2032 P (" pragma Pack (Wide_Wide_String);"); 2033 Write_Eol; 2034 2035 -- We only have one representation each for 32-bit and 64-bit sizes, 2036 -- so select the right one based on Duration_32_Bits_On_Target. 2037 2038 if Duration_32_Bits_On_Target then 2039 P (" type Duration is delta 0.020"); 2040 P (" range -((2 ** 31) * 0.020) .."); 2041 P (" +((2 ** 31 - 1) * 0.020);"); 2042 P (" for Duration'Small use 0.020;"); 2043 2044 else 2045 P (" type Duration is delta 0.000000001"); 2046 P (" range -((2 ** 63) * 0.000000001) .."); 2047 P (" +((2 ** 63 - 1) * 0.000000001);"); 2048 P (" for Duration'Small use 0.000000001;"); 2049 end if; 2050 2051 Write_Eol; 2052 2053 P (" Constraint_Error : exception;"); 2054 P (" Program_Error : exception;"); 2055 P (" Storage_Error : exception;"); 2056 P (" Tasking_Error : exception;"); 2057 P (" Numeric_Error : exception renames Constraint_Error;"); 2058 Write_Eol; 2059 2060 P ("end Standard;"); 2061 end Print_Standard; 2062 2063 ------------------------- 2064 -- Register_Float_Type -- 2065 ------------------------- 2066 2067 procedure Register_Float_Type 2068 (Name : String; 2069 Digs : Positive; 2070 Float_Rep : Float_Rep_Kind; 2071 Precision : Positive; 2072 Size : Positive; 2073 Alignment : Natural) 2074 is 2075 pragma Unreferenced (Precision); 2076 -- See Build_Float_Type for the rationale 2077 2078 Ent : constant Entity_Id := New_Standard_Entity (Name); 2079 2080 begin 2081 Set_Defining_Identifier (New_Node (N_Full_Type_Declaration, Stloc), Ent); 2082 Set_Scope (Ent, Standard_Standard); 2083 Build_Float_Type 2084 (Ent, Pos (Digs), Float_Rep, Int (Size), Int (Alignment / 8)); 2085 2086 Append_New_Elmt (Ent, Back_End_Float_Types); 2087 end Register_Float_Type; 2088 2089 ---------------------- 2090 -- Set_Float_Bounds -- 2091 ---------------------- 2092 2093 procedure Set_Float_Bounds (Id : Entity_Id) is 2094 L : Node_Id; 2095 H : Node_Id; 2096 -- Low and high bounds of literal value 2097 2098 R : Node_Id; 2099 -- Range specification 2100 2101 Radix : constant Uint := Machine_Radix_Value (Id); 2102 Mantissa : constant Uint := Machine_Mantissa_Value (Id); 2103 Emax : constant Uint := Machine_Emax_Value (Id); 2104 Significand : constant Uint := Radix ** Mantissa - 1; 2105 Exponent : constant Uint := Emax - Mantissa; 2106 2107 begin 2108 H := Make_Float_Literal (Stloc, Radix, Significand, Exponent); 2109 L := Make_Float_Literal (Stloc, Radix, -Significand, Exponent); 2110 2111 Set_Etype (L, Id); 2112 Set_Is_Static_Expression (L); 2113 2114 Set_Etype (H, Id); 2115 Set_Is_Static_Expression (H); 2116 2117 R := New_Node (N_Range, Stloc); 2118 Set_Low_Bound (R, L); 2119 Set_High_Bound (R, H); 2120 Set_Includes_Infinities (R, True); 2121 Set_Scalar_Range (Id, R); 2122 Set_Etype (R, Id); 2123 Set_Parent (R, Id); 2124 end Set_Float_Bounds; 2125 2126 ------------------------ 2127 -- Set_Integer_Bounds -- 2128 ------------------------ 2129 2130 procedure Set_Integer_Bounds 2131 (Id : Entity_Id; 2132 Typ : Entity_Id; 2133 Lb : Uint; 2134 Hb : Uint) 2135 is 2136 L : Node_Id; 2137 H : Node_Id; 2138 -- Low and high bounds of literal value 2139 2140 R : Node_Id; 2141 -- Range specification 2142 2143 begin 2144 L := Make_Integer (Lb); 2145 H := Make_Integer (Hb); 2146 2147 Set_Etype (L, Typ); 2148 Set_Etype (H, Typ); 2149 2150 R := New_Node (N_Range, Stloc); 2151 Set_Low_Bound (R, L); 2152 Set_High_Bound (R, H); 2153 Set_Scalar_Range (Id, R); 2154 Set_Etype (R, Typ); 2155 Set_Parent (R, Id); 2156 Set_Is_Unsigned_Type (Id, Lb >= 0); 2157 end Set_Integer_Bounds; 2158 2159end CStand; 2160