1------------------------------------------------------------------------------ 2-- -- 3-- GNAT COMPILER COMPONENTS -- 4-- -- 5-- C S T A N D -- 6-- -- 7-- B o d y -- 8-- -- 9-- Copyright (C) 1992-2014, 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 Elists; use Elists; 31with Layout; use Layout; 32with Namet; use Namet; 33with Nlists; use Nlists; 34with Nmake; use Nmake; 35with Opt; use Opt; 36with Output; use Output; 37with Set_Targ; use Set_Targ; 38with Targparm; use Targparm; 39with Tbuild; use Tbuild; 40with Ttypes; use Ttypes; 41with Scn; 42with Sem_Mech; use Sem_Mech; 43with Sem_Util; use Sem_Util; 44with Sinfo; use Sinfo; 45with Snames; use Snames; 46with Stand; use Stand; 47with Uintp; use Uintp; 48with Urealp; use Urealp; 49 50package body CStand is 51 52 Stloc : constant Source_Ptr := Standard_Location; 53 Staloc : constant Source_Ptr := Standard_ASCII_Location; 54 -- Standard abbreviations used throughout this package 55 56 Back_End_Float_Types : Elist_Id := No_Elist; 57 -- List used for any floating point supported by the back end. This needs 58 -- to be at the library level, because the call back procedures retrieving 59 -- this information are at that level. 60 61 ----------------------- 62 -- Local Subprograms -- 63 ----------------------- 64 65 procedure Build_Float_Type 66 (E : Entity_Id; 67 Siz : Int; 68 Rep : Float_Rep_Kind; 69 Digs : Int); 70 -- Procedure to build standard predefined float base type. The first 71 -- parameter is the entity for the type, and the second parameter is the 72 -- size in bits. The third parameter indicates the kind of representation 73 -- to be used. The fourth parameter is the digits value. Each type 74 -- is added to the list of predefined floating point types. 75 76 procedure Build_Signed_Integer_Type (E : Entity_Id; Siz : Nat); 77 -- Procedure to build standard predefined signed integer subtype. The 78 -- first parameter is the entity for the subtype. The second parameter 79 -- is the size in bits. The corresponding base type is not built by 80 -- this routine but instead must be built by the caller where needed. 81 82 procedure Build_Unsigned_Integer_Type 83 (Uns : Entity_Id; 84 Siz : Nat; 85 Nam : String); 86 -- Procedure to build standard predefined unsigned integer subtype. These 87 -- subtypes are not user visible, but they are used internally. The first 88 -- parameter is the entity for the subtype. The second parameter is the 89 -- size in bits. The third parameter is an identifying name. 90 91 procedure Copy_Float_Type (To : Entity_Id; From : Entity_Id); 92 -- Build a floating point type, copying representation details from From. 93 -- This is used to create predefined floating point types based on 94 -- available types in the back end. 95 96 procedure Create_Operators; 97 -- Make entries for each of the predefined operators in Standard 98 99 procedure Create_Unconstrained_Base_Type 100 (E : Entity_Id; 101 K : Entity_Kind); 102 -- The predefined signed integer types are constrained subtypes which 103 -- must have a corresponding unconstrained base type. This type is almost 104 -- useless. The only place it has semantics is Subtypes_Statically_Match. 105 -- Consequently, we arrange for it to be identical apart from the setting 106 -- of the constrained bit. This routine takes an entity E for the Type, 107 -- copies it to estabish the base type, then resets the Ekind of the 108 -- original entity to K (the Ekind for the subtype). The Etype field of 109 -- E is set by the call (to point to the created base type entity), and 110 -- also the Is_Constrained flag of E is set. 111 -- 112 -- To understand the exact requirement for this, see RM 3.5.4(11) which 113 -- makes it clear that Integer, for example, is constrained, with the 114 -- constraint bounds matching the bounds of the (unconstrained) base 115 -- type. The point is that Integer and Integer'Base have identical 116 -- bounds, but do not statically match, since a subtype with constraints 117 -- never matches a subtype with no constraints. 118 119 function Find_Back_End_Float_Type (Name : String) return Entity_Id; 120 -- Return the first float type in Back_End_Float_Types with the given name. 121 -- Names of entities in back end types, are either type names of C 122 -- predefined types (all lower case), or mode names (upper case). 123 -- These are not generally valid identifier names. 124 125 function Identifier_For (S : Standard_Entity_Type) return Node_Id; 126 -- Returns an identifier node with the same name as the defining 127 -- identifier corresponding to the given Standard_Entity_Type value 128 129 procedure Make_Component 130 (Rec : Entity_Id; 131 Typ : Entity_Id; 132 Nam : String); 133 -- Build a record component with the given type and name, and append to 134 -- the list of components of Rec. 135 136 function Make_Formal 137 (Typ : Entity_Id; 138 Formal_Name : String) return Entity_Id; 139 -- Construct entity for subprogram formal with given name and type 140 141 function Make_Integer (V : Uint) return Node_Id; 142 -- Builds integer literal with given value 143 144 procedure Make_Name (Id : Entity_Id; Nam : String); 145 -- Make an entry in the names table for Nam, and set as Chars field of Id 146 147 function New_Operator (Op : Name_Id; Typ : Entity_Id) return Entity_Id; 148 -- Build entity for standard operator with given name and type 149 150 function New_Standard_Entity 151 (New_Node_Kind : Node_Kind := N_Defining_Identifier) return Entity_Id; 152 -- Builds a new entity for Standard 153 154 procedure Print_Standard; 155 -- Print representation of package Standard if switch set 156 157 procedure Register_Float_Type 158 (Name : String; 159 Digs : Positive; 160 Float_Rep : Float_Rep_Kind; 161 Precision : Positive; 162 Size : Positive; 163 Alignment : Natural); 164 -- Registers a single back end floating-point type (from FPT_Mode_Table in 165 -- Set_Targ). This will create a predefined floating-point base type for 166 -- one of the floating point types reported by the back end, and add it 167 -- to the list of predefined float types. Name is the name of the type 168 -- as a normal format (non-null-terminated) string. Digs is the number of 169 -- digits, which is always non-zero, since non-floating-point types were 170 -- filtered out earlier. Float_Rep indicates the kind of floating-point 171 -- type, and Precision, Size and Alignment are the precision, size and 172 -- alignment in bits. 173 174 procedure Set_Integer_Bounds 175 (Id : Entity_Id; 176 Typ : Entity_Id; 177 Lb : Uint; 178 Hb : Uint); 179 -- Procedure to set bounds for integer type or subtype. Id is the entity 180 -- whose bounds and type are to be set. The Typ parameter is the Etype 181 -- value for the entity (which will be the same as Id for all predefined 182 -- integer base types. The third and fourth parameters are the bounds. 183 184 ---------------------- 185 -- Build_Float_Type -- 186 ---------------------- 187 188 procedure Build_Float_Type 189 (E : Entity_Id; 190 Siz : Int; 191 Rep : Float_Rep_Kind; 192 Digs : Int) 193 is 194 begin 195 Set_Type_Definition (Parent (E), 196 Make_Floating_Point_Definition (Stloc, 197 Digits_Expression => Make_Integer (UI_From_Int (Digs)))); 198 199 Set_Ekind (E, E_Floating_Point_Type); 200 Set_Etype (E, E); 201 Set_Float_Rep (E, Rep); 202 Init_Size (E, Siz); 203 Set_Elem_Alignment (E); 204 Init_Digits_Value (E, Digs); 205 Set_Float_Bounds (E); 206 Set_Is_Frozen (E); 207 Set_Is_Public (E); 208 Set_Size_Known_At_Compile_Time (E); 209 end Build_Float_Type; 210 211 ------------------------------ 212 -- Find_Back_End_Float_Type -- 213 ------------------------------ 214 215 function Find_Back_End_Float_Type (Name : String) return Entity_Id is 216 N : Elmt_Id; 217 218 begin 219 N := First_Elmt (Back_End_Float_Types); 220 while Present (N) and then Get_Name_String (Chars (Node (N))) /= Name 221 loop 222 Next_Elmt (N); 223 end loop; 224 225 return Node (N); 226 end Find_Back_End_Float_Type; 227 228 ------------------------------- 229 -- Build_Signed_Integer_Type -- 230 ------------------------------- 231 232 procedure Build_Signed_Integer_Type (E : Entity_Id; Siz : Nat) is 233 U2Siz1 : constant Uint := 2 ** (Siz - 1); 234 Lbound : constant Uint := -U2Siz1; 235 Ubound : constant Uint := U2Siz1 - 1; 236 237 begin 238 Set_Type_Definition (Parent (E), 239 Make_Signed_Integer_Type_Definition (Stloc, 240 Low_Bound => Make_Integer (Lbound), 241 High_Bound => Make_Integer (Ubound))); 242 243 Set_Ekind (E, E_Signed_Integer_Type); 244 Set_Etype (E, E); 245 Init_Size (E, Siz); 246 Set_Elem_Alignment (E); 247 Set_Integer_Bounds (E, E, Lbound, Ubound); 248 Set_Is_Frozen (E); 249 Set_Is_Public (E); 250 Set_Is_Known_Valid (E); 251 Set_Size_Known_At_Compile_Time (E); 252 end Build_Signed_Integer_Type; 253 254 --------------------------------- 255 -- Build_Unsigned_Integer_Type -- 256 --------------------------------- 257 258 procedure Build_Unsigned_Integer_Type 259 (Uns : Entity_Id; 260 Siz : Nat; 261 Nam : String) 262 is 263 Decl : Node_Id; 264 R_Node : Node_Id; 265 266 begin 267 Decl := New_Node (N_Full_Type_Declaration, Stloc); 268 Set_Defining_Identifier (Decl, Uns); 269 Make_Name (Uns, Nam); 270 271 Set_Ekind (Uns, E_Modular_Integer_Type); 272 Set_Scope (Uns, Standard_Standard); 273 Set_Etype (Uns, Uns); 274 Init_Size (Uns, Siz); 275 Set_Elem_Alignment (Uns); 276 Set_Modulus (Uns, Uint_2 ** Siz); 277 Set_Is_Unsigned_Type (Uns); 278 Set_Size_Known_At_Compile_Time (Uns); 279 Set_Is_Known_Valid (Uns, True); 280 281 R_Node := New_Node (N_Range, Stloc); 282 Set_Low_Bound (R_Node, Make_Integer (Uint_0)); 283 Set_High_Bound (R_Node, Make_Integer (Modulus (Uns) - 1)); 284 Set_Etype (Low_Bound (R_Node), Uns); 285 Set_Etype (High_Bound (R_Node), Uns); 286 Set_Scalar_Range (Uns, R_Node); 287 end Build_Unsigned_Integer_Type; 288 289 --------------------- 290 -- Copy_Float_Type -- 291 --------------------- 292 293 procedure Copy_Float_Type (To : Entity_Id; From : Entity_Id) is 294 begin 295 Build_Float_Type (To, UI_To_Int (Esize (From)), Float_Rep (From), 296 UI_To_Int (Digits_Value (From))); 297 end Copy_Float_Type; 298 299 ---------------------- 300 -- Create_Operators -- 301 ---------------------- 302 303 -- Each operator has an abbreviated signature. The formals have the names 304 -- LEFT and RIGHT. Their types are not actually used for resolution. 305 306 procedure Create_Operators is 307 Op_Node : Entity_Id; 308 309 -- The following tables define the binary and unary operators and their 310 -- corresponding result type. 311 312 Binary_Ops : constant array (S_Binary_Ops) of Name_Id := 313 314 -- There is one entry here for each binary operator, except for the 315 -- case of concatenation, where there are three entries, one for a 316 -- String result, one for Wide_String, and one for Wide_Wide_String. 317 318 (Name_Op_Add, 319 Name_Op_And, 320 Name_Op_Concat, 321 Name_Op_Concat, 322 Name_Op_Concat, 323 Name_Op_Divide, 324 Name_Op_Eq, 325 Name_Op_Expon, 326 Name_Op_Ge, 327 Name_Op_Gt, 328 Name_Op_Le, 329 Name_Op_Lt, 330 Name_Op_Mod, 331 Name_Op_Multiply, 332 Name_Op_Ne, 333 Name_Op_Or, 334 Name_Op_Rem, 335 Name_Op_Subtract, 336 Name_Op_Xor); 337 338 Bin_Op_Types : constant array (S_Binary_Ops) of Entity_Id := 339 340 -- This table has the corresponding result types. The entries are 341 -- ordered so they correspond to the Binary_Ops array above. 342 343 (Universal_Integer, -- Add 344 Standard_Boolean, -- And 345 Standard_String, -- Concat (String) 346 Standard_Wide_String, -- Concat (Wide_String) 347 Standard_Wide_Wide_String, -- Concat (Wide_Wide_String) 348 Universal_Integer, -- Divide 349 Standard_Boolean, -- Eq 350 Universal_Integer, -- Expon 351 Standard_Boolean, -- Ge 352 Standard_Boolean, -- Gt 353 Standard_Boolean, -- Le 354 Standard_Boolean, -- Lt 355 Universal_Integer, -- Mod 356 Universal_Integer, -- Multiply 357 Standard_Boolean, -- Ne 358 Standard_Boolean, -- Or 359 Universal_Integer, -- Rem 360 Universal_Integer, -- Subtract 361 Standard_Boolean); -- Xor 362 363 Unary_Ops : constant array (S_Unary_Ops) of Name_Id := 364 365 -- There is one entry here for each unary operator 366 367 (Name_Op_Abs, 368 Name_Op_Subtract, 369 Name_Op_Not, 370 Name_Op_Add); 371 372 Unary_Op_Types : constant array (S_Unary_Ops) of Entity_Id := 373 374 -- This table has the corresponding result types. The entries are 375 -- ordered so they correspond to the Unary_Ops array above. 376 377 (Universal_Integer, -- Abs 378 Universal_Integer, -- Subtract 379 Standard_Boolean, -- Not 380 Universal_Integer); -- Add 381 382 begin 383 for J in S_Binary_Ops loop 384 Op_Node := New_Operator (Binary_Ops (J), Bin_Op_Types (J)); 385 SE (J) := Op_Node; 386 Append_Entity (Make_Formal (Any_Type, "LEFT"), Op_Node); 387 Append_Entity (Make_Formal (Any_Type, "RIGHT"), Op_Node); 388 end loop; 389 390 for J in S_Unary_Ops loop 391 Op_Node := New_Operator (Unary_Ops (J), Unary_Op_Types (J)); 392 SE (J) := Op_Node; 393 Append_Entity (Make_Formal (Any_Type, "RIGHT"), Op_Node); 394 end loop; 395 396 -- For concatenation, we create a separate operator for each 397 -- array type. This simplifies the resolution of the component- 398 -- component concatenation operation. In Standard, we set the types 399 -- of the formals for string, wide [wide]_string, concatenations. 400 401 Set_Etype (First_Entity (Standard_Op_Concat), Standard_String); 402 Set_Etype (Last_Entity (Standard_Op_Concat), Standard_String); 403 404 Set_Etype (First_Entity (Standard_Op_Concatw), Standard_Wide_String); 405 Set_Etype (Last_Entity (Standard_Op_Concatw), Standard_Wide_String); 406 407 Set_Etype (First_Entity (Standard_Op_Concatww), 408 Standard_Wide_Wide_String); 409 410 Set_Etype (Last_Entity (Standard_Op_Concatww), 411 Standard_Wide_Wide_String); 412 end Create_Operators; 413 414 --------------------- 415 -- Create_Standard -- 416 --------------------- 417 418 -- The tree for the package Standard is prefixed to all compilations. 419 -- Several entities required by semantic analysis are denoted by global 420 -- variables that are initialized to point to the corresponding occurrences 421 -- in Standard. The visible entities of Standard are created here. Special 422 -- entities maybe created here as well or may be created from the semantics 423 -- module. By not adding them to the Decls list of Standard they will not 424 -- be visible to Ada programs. 425 426 procedure Create_Standard is 427 Decl_S : constant List_Id := New_List; 428 -- List of declarations in Standard 429 430 Decl_A : constant List_Id := New_List; 431 -- List of declarations in ASCII 432 433 Decl : Node_Id; 434 Pspec : Node_Id; 435 Tdef_Node : Node_Id; 436 Ident_Node : Node_Id; 437 Ccode : Char_Code; 438 E_Id : Entity_Id; 439 R_Node : Node_Id; 440 B_Node : Node_Id; 441 442 procedure Build_Exception (S : Standard_Entity_Type); 443 -- Procedure to declare given entity as an exception 444 445 procedure Create_Back_End_Float_Types; 446 -- Initialize the Back_End_Float_Types list by having the back end 447 -- enumerate all available types and building type entities for them. 448 449 procedure Create_Float_Types; 450 -- Creates entities for all predefined floating point types, and 451 -- adds these to the Predefined_Float_Types list in package Standard. 452 453 procedure Pack_String_Type (String_Type : Entity_Id); 454 -- Generate proper tree for pragma Pack that applies to given type, and 455 -- mark type as having the pragma. 456 457 --------------------- 458 -- Build_Exception -- 459 --------------------- 460 461 procedure Build_Exception (S : Standard_Entity_Type) is 462 begin 463 Set_Ekind (Standard_Entity (S), E_Exception); 464 Set_Etype (Standard_Entity (S), Standard_Exception_Type); 465 Set_Exception_Code (Standard_Entity (S), Uint_0); 466 Set_Is_Public (Standard_Entity (S), True); 467 468 Decl := 469 Make_Exception_Declaration (Stloc, 470 Defining_Identifier => Standard_Entity (S)); 471 Append (Decl, Decl_S); 472 end Build_Exception; 473 474 --------------------------------- 475 -- Create_Back_End_Float_Types -- 476 --------------------------------- 477 478 procedure Create_Back_End_Float_Types is 479 begin 480 for J in 1 .. Num_FPT_Modes loop 481 declare 482 E : FPT_Mode_Entry renames FPT_Mode_Table (J); 483 begin 484 Register_Float_Type 485 (E.NAME.all, E.DIGS, E.FLOAT_REP, E.PRECISION, E.SIZE, 486 E.ALIGNMENT); 487 end; 488 end loop; 489 end Create_Back_End_Float_Types; 490 491 ------------------------ 492 -- Create_Float_Types -- 493 ------------------------ 494 495 procedure Create_Float_Types is 496 begin 497 -- Create type definition nodes for predefined float types 498 499 Copy_Float_Type 500 (Standard_Short_Float, 501 Find_Back_End_Float_Type ("float")); 502 Set_Is_Implementation_Defined (Standard_Short_Float); 503 504 Copy_Float_Type (Standard_Float, Standard_Short_Float); 505 506 Copy_Float_Type (Standard_Long_Float, 507 Find_Back_End_Float_Type ("double")); 508 509 Predefined_Float_Types := New_Elmt_List; 510 Append_Elmt (Standard_Short_Float, Predefined_Float_Types); 511 Append_Elmt (Standard_Float, Predefined_Float_Types); 512 Append_Elmt (Standard_Long_Float, Predefined_Float_Types); 513 514 -- ??? For now, we don't have a good way to tell the widest float 515 -- type with hardware support. Basically, GCC knows the size of that 516 -- type, but on x86-64 there often are two or three 128-bit types, 517 -- one double extended that has 18 decimal digits, a 128-bit quad 518 -- precision type with 33 digits and possibly a 128-bit decimal float 519 -- type with 34 digits. As a workaround, we define Long_Long_Float as 520 -- C's "long double" if that type exists and has at most 18 digits, 521 -- or otherwise the same as Long_Float. 522 523 declare 524 Max_HW_Digs : constant := 18; 525 -- Maximum hardware digits supported 526 527 LLF : Entity_Id := Find_Back_End_Float_Type ("long double"); 528 -- Entity for long double type 529 530 begin 531 if No (LLF) or else Digits_Value (LLF) > Max_HW_Digs then 532 LLF := Standard_Long_Float; 533 end if; 534 535 Set_Is_Implementation_Defined (Standard_Long_Long_Float); 536 Copy_Float_Type (Standard_Long_Long_Float, LLF); 537 538 Append_Elmt (Standard_Long_Long_Float, Predefined_Float_Types); 539 end; 540 541 -- Any other back end types are appended at the end of the list of 542 -- predefined float types, and will only be selected if the none of 543 -- the types in Standard is suitable, or if a specific named type is 544 -- requested through a pragma Import. 545 546 while not Is_Empty_Elmt_List (Back_End_Float_Types) loop 547 declare 548 E : constant Elmt_Id := First_Elmt (Back_End_Float_Types); 549 begin 550 Append_Elmt (Node (E), To => Predefined_Float_Types); 551 Remove_Elmt (Back_End_Float_Types, E); 552 end; 553 end loop; 554 end Create_Float_Types; 555 556 ---------------------- 557 -- Pack_String_Type -- 558 ---------------------- 559 560 procedure Pack_String_Type (String_Type : Entity_Id) is 561 Prag : constant Node_Id := 562 Make_Pragma (Stloc, 563 Chars => Name_Pack, 564 Pragma_Argument_Associations => 565 New_List ( 566 Make_Pragma_Argument_Association (Stloc, 567 Expression => New_Occurrence_Of (String_Type, Stloc)))); 568 begin 569 Append (Prag, Decl_S); 570 Record_Rep_Item (String_Type, Prag); 571 Set_Has_Pragma_Pack (String_Type, True); 572 end Pack_String_Type; 573 574 -- Start of processing for Create_Standard 575 576 begin 577 -- Initialize scanner for internal scans of literals 578 579 Scn.Initialize_Scanner (No_Unit, Internal_Source_File); 580 581 -- First step is to create defining identifiers for each entity 582 583 for S in Standard_Entity_Type loop 584 declare 585 S_Name : constant String := Standard_Entity_Type'Image (S); 586 -- Name of entity (note we skip S_ at the start) 587 588 Ident_Node : Node_Id; 589 -- Defining identifier node 590 591 begin 592 Ident_Node := New_Standard_Entity; 593 Make_Name (Ident_Node, S_Name (3 .. S_Name'Length)); 594 Standard_Entity (S) := Ident_Node; 595 end; 596 end loop; 597 598 -- Create package declaration node for package Standard 599 600 Standard_Package_Node := New_Node (N_Package_Declaration, Stloc); 601 602 Pspec := New_Node (N_Package_Specification, Stloc); 603 Set_Specification (Standard_Package_Node, Pspec); 604 605 Set_Defining_Unit_Name (Pspec, Standard_Standard); 606 Set_Visible_Declarations (Pspec, Decl_S); 607 608 Set_Ekind (Standard_Standard, E_Package); 609 Set_Is_Pure (Standard_Standard); 610 Set_Is_Compilation_Unit (Standard_Standard); 611 612 -- Create type/subtype declaration nodes for standard types 613 614 for S in S_Types loop 615 616 -- Subtype declaration case 617 618 if S = S_Natural or else S = S_Positive then 619 Decl := New_Node (N_Subtype_Declaration, Stloc); 620 Set_Subtype_Indication (Decl, 621 New_Occurrence_Of (Standard_Integer, Stloc)); 622 623 -- Full type declaration case 624 625 else 626 Decl := New_Node (N_Full_Type_Declaration, Stloc); 627 end if; 628 629 Set_Is_Frozen (Standard_Entity (S)); 630 Set_Is_Public (Standard_Entity (S)); 631 Set_Defining_Identifier (Decl, Standard_Entity (S)); 632 Append (Decl, Decl_S); 633 end loop; 634 635 Create_Back_End_Float_Types; 636 637 -- Create type definition node for type Boolean. The Size is set to 638 -- 1 as required by Ada 95 and current ARG interpretations for Ada/83. 639 640 -- Note: Object_Size of Boolean is 8. This means that we do NOT in 641 -- general know that Boolean variables have valid values, so we do 642 -- not set the Is_Known_Valid flag. 643 644 Tdef_Node := New_Node (N_Enumeration_Type_Definition, Stloc); 645 Set_Literals (Tdef_Node, New_List); 646 Append (Standard_False, Literals (Tdef_Node)); 647 Append (Standard_True, Literals (Tdef_Node)); 648 Set_Type_Definition (Parent (Standard_Boolean), Tdef_Node); 649 650 Set_Ekind (Standard_Boolean, E_Enumeration_Type); 651 Set_First_Literal (Standard_Boolean, Standard_False); 652 Set_Etype (Standard_Boolean, Standard_Boolean); 653 Init_Esize (Standard_Boolean, Standard_Character_Size); 654 Init_RM_Size (Standard_Boolean, 1); 655 Set_Elem_Alignment (Standard_Boolean); 656 657 Set_Is_Unsigned_Type (Standard_Boolean); 658 Set_Size_Known_At_Compile_Time (Standard_Boolean); 659 Set_Has_Pragma_Ordered (Standard_Boolean); 660 661 Set_Ekind (Standard_True, E_Enumeration_Literal); 662 Set_Etype (Standard_True, Standard_Boolean); 663 Set_Enumeration_Pos (Standard_True, Uint_1); 664 Set_Enumeration_Rep (Standard_True, Uint_1); 665 Set_Is_Known_Valid (Standard_True, True); 666 667 Set_Ekind (Standard_False, E_Enumeration_Literal); 668 Set_Etype (Standard_False, Standard_Boolean); 669 Set_Enumeration_Pos (Standard_False, Uint_0); 670 Set_Enumeration_Rep (Standard_False, Uint_0); 671 Set_Is_Known_Valid (Standard_False, True); 672 673 -- For the bounds of Boolean, we create a range node corresponding to 674 675 -- range False .. True 676 677 -- where the occurrences of the literals must point to the 678 -- corresponding definition. 679 680 R_Node := New_Node (N_Range, Stloc); 681 B_Node := New_Node (N_Identifier, Stloc); 682 Set_Chars (B_Node, Chars (Standard_False)); 683 Set_Entity (B_Node, Standard_False); 684 Set_Etype (B_Node, Standard_Boolean); 685 Set_Is_Static_Expression (B_Node); 686 Set_Low_Bound (R_Node, B_Node); 687 688 B_Node := New_Node (N_Identifier, Stloc); 689 Set_Chars (B_Node, Chars (Standard_True)); 690 Set_Entity (B_Node, Standard_True); 691 Set_Etype (B_Node, Standard_Boolean); 692 Set_Is_Static_Expression (B_Node); 693 Set_High_Bound (R_Node, B_Node); 694 695 Set_Scalar_Range (Standard_Boolean, R_Node); 696 Set_Etype (R_Node, Standard_Boolean); 697 Set_Parent (R_Node, Standard_Boolean); 698 699 -- Record entity identifiers for boolean literals in the 700 -- Boolean_Literals array, for easy reference during expansion. 701 702 Boolean_Literals := (False => Standard_False, True => Standard_True); 703 704 -- Create type definition nodes for predefined integer types 705 706 Build_Signed_Integer_Type 707 (Standard_Short_Short_Integer, Standard_Short_Short_Integer_Size); 708 709 Build_Signed_Integer_Type 710 (Standard_Short_Integer, Standard_Short_Integer_Size); 711 712 Build_Signed_Integer_Type 713 (Standard_Integer, Standard_Integer_Size); 714 715 declare 716 LIS : Nat; 717 begin 718 if Debug_Flag_M then 719 LIS := 64; 720 else 721 LIS := Standard_Long_Integer_Size; 722 end if; 723 724 Build_Signed_Integer_Type (Standard_Long_Integer, LIS); 725 end; 726 727 Build_Signed_Integer_Type 728 (Standard_Long_Long_Integer, Standard_Long_Long_Integer_Size); 729 Set_Is_Implementation_Defined (Standard_Long_Long_Integer); 730 731 Create_Unconstrained_Base_Type 732 (Standard_Short_Short_Integer, E_Signed_Integer_Subtype); 733 Set_Is_Implementation_Defined (Standard_Short_Short_Integer); 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 Set_Is_Implementation_Defined (Standard_Short_Short_Integer); 747 748 Create_Float_Types; 749 750 -- Create type definition node for type Character. Note that we do not 751 -- set the Literals field, since type Character is handled with special 752 -- routine that do not need a literal list. 753 754 Tdef_Node := New_Node (N_Enumeration_Type_Definition, Stloc); 755 Set_Type_Definition (Parent (Standard_Character), Tdef_Node); 756 757 Set_Ekind (Standard_Character, E_Enumeration_Type); 758 Set_Etype (Standard_Character, Standard_Character); 759 Init_Esize (Standard_Character, Standard_Character_Size); 760 Init_RM_Size (Standard_Character, 8); 761 Set_Elem_Alignment (Standard_Character); 762 763 Set_Has_Pragma_Ordered (Standard_Character); 764 Set_Is_Unsigned_Type (Standard_Character); 765 Set_Is_Character_Type (Standard_Character); 766 Set_Is_Known_Valid (Standard_Character); 767 Set_Size_Known_At_Compile_Time (Standard_Character); 768 769 -- Create the bounds for type Character 770 771 R_Node := New_Node (N_Range, Stloc); 772 773 -- Low bound for type Character (Standard.Nul) 774 775 B_Node := New_Node (N_Character_Literal, Stloc); 776 Set_Is_Static_Expression (B_Node); 777 Set_Chars (B_Node, No_Name); 778 Set_Char_Literal_Value (B_Node, Uint_0); 779 Set_Entity (B_Node, Empty); 780 Set_Etype (B_Node, Standard_Character); 781 Set_Low_Bound (R_Node, B_Node); 782 783 -- High bound for type Character 784 785 B_Node := New_Node (N_Character_Literal, Stloc); 786 Set_Is_Static_Expression (B_Node); 787 Set_Chars (B_Node, No_Name); 788 Set_Char_Literal_Value (B_Node, UI_From_Int (16#FF#)); 789 Set_Entity (B_Node, Empty); 790 Set_Etype (B_Node, Standard_Character); 791 Set_High_Bound (R_Node, B_Node); 792 793 Set_Scalar_Range (Standard_Character, R_Node); 794 Set_Etype (R_Node, Standard_Character); 795 Set_Parent (R_Node, Standard_Character); 796 797 -- Create type definition for type Wide_Character. Note that we do not 798 -- set the Literals field, since type Wide_Character is handled with 799 -- special routines that do not need a literal list. 800 801 Tdef_Node := New_Node (N_Enumeration_Type_Definition, Stloc); 802 Set_Type_Definition (Parent (Standard_Wide_Character), Tdef_Node); 803 804 Set_Ekind (Standard_Wide_Character, E_Enumeration_Type); 805 Set_Etype (Standard_Wide_Character, Standard_Wide_Character); 806 Init_Size (Standard_Wide_Character, Standard_Wide_Character_Size); 807 808 Set_Elem_Alignment (Standard_Wide_Character); 809 Set_Has_Pragma_Ordered (Standard_Wide_Character); 810 Set_Is_Unsigned_Type (Standard_Wide_Character); 811 Set_Is_Character_Type (Standard_Wide_Character); 812 Set_Is_Known_Valid (Standard_Wide_Character); 813 Set_Size_Known_At_Compile_Time (Standard_Wide_Character); 814 815 -- Create the bounds for type Wide_Character 816 817 R_Node := New_Node (N_Range, Stloc); 818 819 -- Low bound for type Wide_Character 820 821 B_Node := New_Node (N_Character_Literal, Stloc); 822 Set_Is_Static_Expression (B_Node); 823 Set_Chars (B_Node, No_Name); -- ??? 824 Set_Char_Literal_Value (B_Node, Uint_0); 825 Set_Entity (B_Node, Empty); 826 Set_Etype (B_Node, Standard_Wide_Character); 827 Set_Low_Bound (R_Node, B_Node); 828 829 -- High bound for type Wide_Character 830 831 B_Node := New_Node (N_Character_Literal, Stloc); 832 Set_Is_Static_Expression (B_Node); 833 Set_Chars (B_Node, No_Name); -- ??? 834 Set_Char_Literal_Value (B_Node, UI_From_Int (16#FFFF#)); 835 Set_Entity (B_Node, Empty); 836 Set_Etype (B_Node, Standard_Wide_Character); 837 Set_High_Bound (R_Node, B_Node); 838 839 Set_Scalar_Range (Standard_Wide_Character, R_Node); 840 Set_Etype (R_Node, Standard_Wide_Character); 841 Set_Parent (R_Node, Standard_Wide_Character); 842 843 -- Create type definition for type Wide_Wide_Character. Note that we 844 -- do not set the Literals field, since type Wide_Wide_Character is 845 -- handled with special routines that do not need a literal list. 846 847 Tdef_Node := New_Node (N_Enumeration_Type_Definition, Stloc); 848 Set_Type_Definition (Parent (Standard_Wide_Wide_Character), Tdef_Node); 849 850 Set_Ekind (Standard_Wide_Wide_Character, E_Enumeration_Type); 851 Set_Etype (Standard_Wide_Wide_Character, 852 Standard_Wide_Wide_Character); 853 Init_Size (Standard_Wide_Wide_Character, 854 Standard_Wide_Wide_Character_Size); 855 856 Set_Elem_Alignment (Standard_Wide_Wide_Character); 857 Set_Has_Pragma_Ordered (Standard_Wide_Wide_Character); 858 Set_Is_Unsigned_Type (Standard_Wide_Wide_Character); 859 Set_Is_Character_Type (Standard_Wide_Wide_Character); 860 Set_Is_Known_Valid (Standard_Wide_Wide_Character); 861 Set_Size_Known_At_Compile_Time (Standard_Wide_Wide_Character); 862 Set_Is_Ada_2005_Only (Standard_Wide_Wide_Character); 863 864 -- Create the bounds for type Wide_Wide_Character 865 866 R_Node := New_Node (N_Range, Stloc); 867 868 -- Low bound for type Wide_Wide_Character 869 870 B_Node := New_Node (N_Character_Literal, Stloc); 871 Set_Is_Static_Expression (B_Node); 872 Set_Chars (B_Node, No_Name); -- ??? 873 Set_Char_Literal_Value (B_Node, Uint_0); 874 Set_Entity (B_Node, Empty); 875 Set_Etype (B_Node, Standard_Wide_Wide_Character); 876 Set_Low_Bound (R_Node, B_Node); 877 878 -- High bound for type Wide_Wide_Character 879 880 B_Node := New_Node (N_Character_Literal, Stloc); 881 Set_Is_Static_Expression (B_Node); 882 Set_Chars (B_Node, No_Name); -- ??? 883 Set_Char_Literal_Value (B_Node, UI_From_Int (16#7FFF_FFFF#)); 884 Set_Entity (B_Node, Empty); 885 Set_Etype (B_Node, Standard_Wide_Wide_Character); 886 Set_High_Bound (R_Node, B_Node); 887 888 Set_Scalar_Range (Standard_Wide_Wide_Character, R_Node); 889 Set_Etype (R_Node, Standard_Wide_Wide_Character); 890 Set_Parent (R_Node, Standard_Wide_Wide_Character); 891 892 -- Create type definition node for type String 893 894 Tdef_Node := New_Node (N_Unconstrained_Array_Definition, Stloc); 895 896 declare 897 CompDef_Node : Node_Id; 898 begin 899 CompDef_Node := New_Node (N_Component_Definition, Stloc); 900 Set_Aliased_Present (CompDef_Node, False); 901 Set_Access_Definition (CompDef_Node, Empty); 902 Set_Subtype_Indication (CompDef_Node, Identifier_For (S_Character)); 903 Set_Component_Definition (Tdef_Node, CompDef_Node); 904 end; 905 906 Set_Subtype_Marks (Tdef_Node, New_List); 907 Append (Identifier_For (S_Positive), Subtype_Marks (Tdef_Node)); 908 Set_Type_Definition (Parent (Standard_String), Tdef_Node); 909 910 Set_Ekind (Standard_String, E_String_Type); 911 Set_Etype (Standard_String, Standard_String); 912 Set_Component_Type (Standard_String, Standard_Character); 913 Set_Component_Size (Standard_String, Uint_8); 914 Init_Size_Align (Standard_String); 915 Set_Alignment (Standard_String, Uint_1); 916 Pack_String_Type (Standard_String); 917 918 -- On targets where a storage unit is larger than a byte (such as AAMP), 919 -- pragma Pack has a real effect on the representation of type String, 920 -- and the type must be marked as having a nonstandard representation. 921 922 if System_Storage_Unit > Uint_8 then 923 Set_Has_Non_Standard_Rep (Standard_String); 924 Set_Has_Pragma_Pack (Standard_String); 925 end if; 926 927 -- Set index type of String 928 929 E_Id := First 930 (Subtype_Marks (Type_Definition (Parent (Standard_String)))); 931 Set_First_Index (Standard_String, E_Id); 932 Set_Entity (E_Id, Standard_Positive); 933 Set_Etype (E_Id, Standard_Positive); 934 935 -- Create type definition node for type Wide_String 936 937 Tdef_Node := New_Node (N_Unconstrained_Array_Definition, Stloc); 938 939 declare 940 CompDef_Node : Node_Id; 941 begin 942 CompDef_Node := New_Node (N_Component_Definition, Stloc); 943 Set_Aliased_Present (CompDef_Node, False); 944 Set_Access_Definition (CompDef_Node, Empty); 945 Set_Subtype_Indication (CompDef_Node, 946 Identifier_For (S_Wide_Character)); 947 Set_Component_Definition (Tdef_Node, CompDef_Node); 948 end; 949 950 Set_Subtype_Marks (Tdef_Node, New_List); 951 Append (Identifier_For (S_Positive), Subtype_Marks (Tdef_Node)); 952 Set_Type_Definition (Parent (Standard_Wide_String), Tdef_Node); 953 954 Set_Ekind (Standard_Wide_String, E_String_Type); 955 Set_Etype (Standard_Wide_String, Standard_Wide_String); 956 Set_Component_Type (Standard_Wide_String, Standard_Wide_Character); 957 Set_Component_Size (Standard_Wide_String, Uint_16); 958 Init_Size_Align (Standard_Wide_String); 959 Pack_String_Type (Standard_Wide_String); 960 961 -- Set index type of Wide_String 962 963 E_Id := First 964 (Subtype_Marks (Type_Definition (Parent (Standard_Wide_String)))); 965 Set_First_Index (Standard_Wide_String, E_Id); 966 Set_Entity (E_Id, Standard_Positive); 967 Set_Etype (E_Id, Standard_Positive); 968 969 -- Create type definition node for type Wide_Wide_String 970 971 Tdef_Node := New_Node (N_Unconstrained_Array_Definition, Stloc); 972 973 declare 974 CompDef_Node : Node_Id; 975 begin 976 CompDef_Node := New_Node (N_Component_Definition, Stloc); 977 Set_Aliased_Present (CompDef_Node, False); 978 Set_Access_Definition (CompDef_Node, Empty); 979 Set_Subtype_Indication (CompDef_Node, 980 Identifier_For (S_Wide_Wide_Character)); 981 Set_Component_Definition (Tdef_Node, CompDef_Node); 982 end; 983 984 Set_Subtype_Marks (Tdef_Node, New_List); 985 Append (Identifier_For (S_Positive), Subtype_Marks (Tdef_Node)); 986 Set_Type_Definition (Parent (Standard_Wide_Wide_String), Tdef_Node); 987 988 Set_Ekind (Standard_Wide_Wide_String, E_String_Type); 989 Set_Etype (Standard_Wide_Wide_String, 990 Standard_Wide_Wide_String); 991 Set_Component_Type (Standard_Wide_Wide_String, 992 Standard_Wide_Wide_Character); 993 Set_Component_Size (Standard_Wide_Wide_String, Uint_32); 994 Init_Size_Align (Standard_Wide_Wide_String); 995 Set_Is_Ada_2005_Only (Standard_Wide_Wide_String); 996 Pack_String_Type (Standard_Wide_Wide_String); 997 998 -- Set index type of Wide_Wide_String 999 1000 E_Id := First 1001 (Subtype_Marks (Type_Definition (Parent (Standard_Wide_Wide_String)))); 1002 Set_First_Index (Standard_Wide_Wide_String, E_Id); 1003 Set_Entity (E_Id, Standard_Positive); 1004 Set_Etype (E_Id, Standard_Positive); 1005 1006 -- Setup entity for Natural 1007 1008 Set_Ekind (Standard_Natural, E_Signed_Integer_Subtype); 1009 Set_Etype (Standard_Natural, Base_Type (Standard_Integer)); 1010 Init_Esize (Standard_Natural, Standard_Integer_Size); 1011 Init_RM_Size (Standard_Natural, Standard_Integer_Size - 1); 1012 Set_Elem_Alignment (Standard_Natural); 1013 Set_Size_Known_At_Compile_Time 1014 (Standard_Natural); 1015 Set_Integer_Bounds (Standard_Natural, 1016 Typ => Base_Type (Standard_Integer), 1017 Lb => Uint_0, 1018 Hb => Intval (High_Bound (Scalar_Range (Standard_Integer)))); 1019 Set_Is_Constrained (Standard_Natural); 1020 1021 -- Setup entity for Positive 1022 1023 Set_Ekind (Standard_Positive, E_Signed_Integer_Subtype); 1024 Set_Etype (Standard_Positive, Base_Type (Standard_Integer)); 1025 Init_Esize (Standard_Positive, Standard_Integer_Size); 1026 Init_RM_Size (Standard_Positive, Standard_Integer_Size - 1); 1027 Set_Elem_Alignment (Standard_Positive); 1028 1029 Set_Size_Known_At_Compile_Time (Standard_Positive); 1030 1031 Set_Integer_Bounds (Standard_Positive, 1032 Typ => Base_Type (Standard_Integer), 1033 Lb => Uint_1, 1034 Hb => Intval (High_Bound (Scalar_Range (Standard_Integer)))); 1035 Set_Is_Constrained (Standard_Positive); 1036 1037 -- Create declaration for package ASCII 1038 1039 Decl := New_Node (N_Package_Declaration, Stloc); 1040 Append (Decl, Decl_S); 1041 1042 Pspec := New_Node (N_Package_Specification, Stloc); 1043 Set_Specification (Decl, Pspec); 1044 1045 Set_Defining_Unit_Name (Pspec, Standard_Entity (S_ASCII)); 1046 Set_Ekind (Standard_Entity (S_ASCII), E_Package); 1047 Set_Visible_Declarations (Pspec, Decl_A); 1048 1049 -- Create control character definitions in package ASCII. Note that 1050 -- the character literal entries created here correspond to literal 1051 -- values that are impossible in the source, but can be represented 1052 -- internally with no difficulties. 1053 1054 Ccode := 16#00#; 1055 1056 for S in S_ASCII_Names loop 1057 Decl := New_Node (N_Object_Declaration, Staloc); 1058 Set_Constant_Present (Decl, True); 1059 1060 declare 1061 A_Char : constant Entity_Id := Standard_Entity (S); 1062 Expr_Decl : Node_Id; 1063 1064 begin 1065 Set_Sloc (A_Char, Staloc); 1066 Set_Ekind (A_Char, E_Constant); 1067 Set_Never_Set_In_Source (A_Char, True); 1068 Set_Is_True_Constant (A_Char, True); 1069 Set_Etype (A_Char, Standard_Character); 1070 Set_Scope (A_Char, Standard_Entity (S_ASCII)); 1071 Set_Is_Immediately_Visible (A_Char, False); 1072 Set_Is_Public (A_Char, True); 1073 Set_Is_Known_Valid (A_Char, True); 1074 1075 Append_Entity (A_Char, Standard_Entity (S_ASCII)); 1076 Set_Defining_Identifier (Decl, A_Char); 1077 1078 Set_Object_Definition (Decl, Identifier_For (S_Character)); 1079 Expr_Decl := New_Node (N_Character_Literal, Staloc); 1080 Set_Expression (Decl, Expr_Decl); 1081 1082 Set_Is_Static_Expression (Expr_Decl); 1083 Set_Chars (Expr_Decl, No_Name); 1084 Set_Etype (Expr_Decl, Standard_Character); 1085 Set_Char_Literal_Value (Expr_Decl, UI_From_Int (Int (Ccode))); 1086 end; 1087 1088 Append (Decl, Decl_A); 1089 1090 -- Increment character code, dealing with non-contiguities 1091 1092 Ccode := Ccode + 1; 1093 1094 if Ccode = 16#20# then 1095 Ccode := 16#21#; 1096 elsif Ccode = 16#27# then 1097 Ccode := 16#3A#; 1098 elsif Ccode = 16#3C# then 1099 Ccode := 16#3F#; 1100 elsif Ccode = 16#41# then 1101 Ccode := 16#5B#; 1102 end if; 1103 end loop; 1104 1105 -- Create semantic phase entities 1106 1107 Standard_Void_Type := New_Standard_Entity; 1108 Set_Ekind (Standard_Void_Type, E_Void); 1109 Set_Etype (Standard_Void_Type, Standard_Void_Type); 1110 Set_Scope (Standard_Void_Type, Standard_Standard); 1111 Make_Name (Standard_Void_Type, "_void_type"); 1112 1113 -- The type field of packages is set to void 1114 1115 Set_Etype (Standard_Standard, Standard_Void_Type); 1116 Set_Etype (Standard_ASCII, Standard_Void_Type); 1117 1118 -- Standard_A_String is actually used in generated code, so it has a 1119 -- type name that is reasonable, but does not overlap any Ada name. 1120 1121 Standard_A_String := New_Standard_Entity; 1122 Set_Ekind (Standard_A_String, E_Access_Type); 1123 Set_Scope (Standard_A_String, Standard_Standard); 1124 Set_Etype (Standard_A_String, Standard_A_String); 1125 1126 if Debug_Flag_6 then 1127 Init_Size (Standard_A_String, System_Address_Size); 1128 else 1129 Init_Size (Standard_A_String, System_Address_Size * 2); 1130 end if; 1131 1132 Init_Alignment (Standard_A_String); 1133 1134 Set_Directly_Designated_Type 1135 (Standard_A_String, Standard_String); 1136 Make_Name (Standard_A_String, "access_string"); 1137 1138 Standard_A_Char := New_Standard_Entity; 1139 Set_Ekind (Standard_A_Char, E_Access_Type); 1140 Set_Scope (Standard_A_Char, Standard_Standard); 1141 Set_Etype (Standard_A_Char, Standard_A_String); 1142 Init_Size (Standard_A_Char, System_Address_Size); 1143 Set_Elem_Alignment (Standard_A_Char); 1144 1145 Set_Directly_Designated_Type (Standard_A_Char, Standard_Character); 1146 Make_Name (Standard_A_Char, "access_character"); 1147 1148 -- Standard_Debug_Renaming_Type is used for the special objects created 1149 -- to encode the names occurring in renaming declarations for use by the 1150 -- debugger (see exp_dbug.adb). The type is a zero-sized subtype of 1151 -- Standard.Integer. 1152 1153 Standard_Debug_Renaming_Type := New_Standard_Entity; 1154 1155 Set_Ekind (Standard_Debug_Renaming_Type, E_Signed_Integer_Subtype); 1156 Set_Scope (Standard_Debug_Renaming_Type, Standard_Standard); 1157 Set_Etype (Standard_Debug_Renaming_Type, Base_Type (Standard_Integer)); 1158 Init_Esize (Standard_Debug_Renaming_Type, 0); 1159 Init_RM_Size (Standard_Debug_Renaming_Type, 0); 1160 Set_Size_Known_At_Compile_Time (Standard_Debug_Renaming_Type); 1161 Set_Integer_Bounds (Standard_Debug_Renaming_Type, 1162 Typ => Base_Type (Standard_Debug_Renaming_Type), 1163 Lb => Uint_1, 1164 Hb => Uint_0); 1165 Set_Is_Constrained (Standard_Debug_Renaming_Type); 1166 Set_Has_Size_Clause (Standard_Debug_Renaming_Type); 1167 1168 Make_Name (Standard_Debug_Renaming_Type, "_renaming_type"); 1169 1170 -- Note on type names. The type names for the following special types 1171 -- are constructed so that they will look reasonable should they ever 1172 -- appear in error messages etc, although in practice the use of the 1173 -- special insertion character } for types results in special handling 1174 -- of these type names in any case. The blanks in these names would 1175 -- trouble in Gigi, but that's OK here, since none of these types 1176 -- should ever get through to Gigi. Attributes of these types are 1177 -- filled out to minimize problems with cascaded errors (for example, 1178 -- Any_Integer is given reasonable and consistent type and size values) 1179 1180 Any_Type := New_Standard_Entity; 1181 Decl := New_Node (N_Full_Type_Declaration, Stloc); 1182 Set_Defining_Identifier (Decl, Any_Type); 1183 Set_Scope (Any_Type, Standard_Standard); 1184 Build_Signed_Integer_Type (Any_Type, Standard_Integer_Size); 1185 Make_Name (Any_Type, "any type"); 1186 1187 Any_Id := New_Standard_Entity; 1188 Set_Ekind (Any_Id, E_Variable); 1189 Set_Scope (Any_Id, Standard_Standard); 1190 Set_Etype (Any_Id, Any_Type); 1191 Init_Esize (Any_Id); 1192 Init_Alignment (Any_Id); 1193 Make_Name (Any_Id, "any id"); 1194 1195 Any_Access := New_Standard_Entity; 1196 Set_Ekind (Any_Access, E_Access_Type); 1197 Set_Scope (Any_Access, Standard_Standard); 1198 Set_Etype (Any_Access, Any_Access); 1199 Init_Size (Any_Access, System_Address_Size); 1200 Set_Elem_Alignment (Any_Access); 1201 Make_Name (Any_Access, "an access type"); 1202 1203 Any_Character := New_Standard_Entity; 1204 Set_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 Init_Esize (Any_Character, Standard_Character_Size); 1210 Init_RM_Size (Any_Character, 8); 1211 Set_Elem_Alignment (Any_Character); 1212 Set_Scalar_Range (Any_Character, Scalar_Range (Standard_Character)); 1213 Make_Name (Any_Character, "a character type"); 1214 1215 Any_Array := New_Standard_Entity; 1216 Set_Ekind (Any_Array, E_String_Type); 1217 Set_Scope (Any_Array, Standard_Standard); 1218 Set_Etype (Any_Array, Any_Array); 1219 Set_Component_Type (Any_Array, Any_Character); 1220 Init_Size_Align (Any_Array); 1221 Make_Name (Any_Array, "an array type"); 1222 1223 Any_Boolean := New_Standard_Entity; 1224 Set_Ekind (Any_Boolean, E_Enumeration_Type); 1225 Set_Scope (Any_Boolean, Standard_Standard); 1226 Set_Etype (Any_Boolean, Standard_Boolean); 1227 Init_Esize (Any_Boolean, Standard_Character_Size); 1228 Init_RM_Size (Any_Boolean, 1); 1229 Set_Elem_Alignment (Any_Boolean); 1230 Set_Is_Unsigned_Type (Any_Boolean); 1231 Set_Scalar_Range (Any_Boolean, Scalar_Range (Standard_Boolean)); 1232 Make_Name (Any_Boolean, "a boolean type"); 1233 1234 Any_Composite := New_Standard_Entity; 1235 Set_Ekind (Any_Composite, E_Array_Type); 1236 Set_Scope (Any_Composite, Standard_Standard); 1237 Set_Etype (Any_Composite, Any_Composite); 1238 Set_Component_Size (Any_Composite, Uint_0); 1239 Set_Component_Type (Any_Composite, Standard_Integer); 1240 Init_Size_Align (Any_Composite); 1241 Make_Name (Any_Composite, "a composite type"); 1242 1243 Any_Discrete := New_Standard_Entity; 1244 Set_Ekind (Any_Discrete, E_Signed_Integer_Type); 1245 Set_Scope (Any_Discrete, Standard_Standard); 1246 Set_Etype (Any_Discrete, Any_Discrete); 1247 Init_Size (Any_Discrete, Standard_Integer_Size); 1248 Set_Elem_Alignment (Any_Discrete); 1249 Make_Name (Any_Discrete, "a discrete type"); 1250 1251 Any_Fixed := New_Standard_Entity; 1252 Set_Ekind (Any_Fixed, E_Ordinary_Fixed_Point_Type); 1253 Set_Scope (Any_Fixed, Standard_Standard); 1254 Set_Etype (Any_Fixed, Any_Fixed); 1255 Init_Size (Any_Fixed, Standard_Integer_Size); 1256 Set_Elem_Alignment (Any_Fixed); 1257 Make_Name (Any_Fixed, "a fixed-point type"); 1258 1259 Any_Integer := New_Standard_Entity; 1260 Set_Ekind (Any_Integer, E_Signed_Integer_Type); 1261 Set_Scope (Any_Integer, Standard_Standard); 1262 Set_Etype (Any_Integer, Standard_Long_Long_Integer); 1263 Init_Size (Any_Integer, Standard_Long_Long_Integer_Size); 1264 Set_Elem_Alignment (Any_Integer); 1265 1266 Set_Integer_Bounds 1267 (Any_Integer, 1268 Typ => Base_Type (Standard_Integer), 1269 Lb => Uint_0, 1270 Hb => Intval (High_Bound (Scalar_Range (Standard_Integer)))); 1271 Make_Name (Any_Integer, "an integer type"); 1272 1273 Any_Modular := New_Standard_Entity; 1274 Set_Ekind (Any_Modular, E_Modular_Integer_Type); 1275 Set_Scope (Any_Modular, Standard_Standard); 1276 Set_Etype (Any_Modular, Standard_Long_Long_Integer); 1277 Init_Size (Any_Modular, Standard_Long_Long_Integer_Size); 1278 Set_Elem_Alignment (Any_Modular); 1279 Set_Is_Unsigned_Type (Any_Modular); 1280 Make_Name (Any_Modular, "a modular type"); 1281 1282 Any_Numeric := New_Standard_Entity; 1283 Set_Ekind (Any_Numeric, E_Signed_Integer_Type); 1284 Set_Scope (Any_Numeric, Standard_Standard); 1285 Set_Etype (Any_Numeric, Standard_Long_Long_Integer); 1286 Init_Size (Any_Numeric, Standard_Long_Long_Integer_Size); 1287 Set_Elem_Alignment (Any_Numeric); 1288 Make_Name (Any_Numeric, "a numeric type"); 1289 1290 Any_Real := New_Standard_Entity; 1291 Set_Ekind (Any_Real, E_Floating_Point_Type); 1292 Set_Scope (Any_Real, Standard_Standard); 1293 Set_Etype (Any_Real, Standard_Long_Long_Float); 1294 Init_Size (Any_Real, 1295 UI_To_Int (Esize (Standard_Long_Long_Float))); 1296 Set_Elem_Alignment (Any_Real); 1297 Make_Name (Any_Real, "a real type"); 1298 1299 Any_Scalar := New_Standard_Entity; 1300 Set_Ekind (Any_Scalar, E_Signed_Integer_Type); 1301 Set_Scope (Any_Scalar, Standard_Standard); 1302 Set_Etype (Any_Scalar, Any_Scalar); 1303 Init_Size (Any_Scalar, Standard_Integer_Size); 1304 Set_Elem_Alignment (Any_Scalar); 1305 Make_Name (Any_Scalar, "a scalar type"); 1306 1307 Any_String := New_Standard_Entity; 1308 Set_Ekind (Any_String, E_String_Type); 1309 Set_Scope (Any_String, Standard_Standard); 1310 Set_Etype (Any_String, Any_String); 1311 Set_Component_Type (Any_String, Any_Character); 1312 Init_Size_Align (Any_String); 1313 Make_Name (Any_String, "a string type"); 1314 1315 declare 1316 Index : Node_Id; 1317 1318 begin 1319 Index := 1320 Make_Range (Stloc, 1321 Low_Bound => Make_Integer (Uint_0), 1322 High_Bound => Make_Integer (Uint_2 ** Standard_Integer_Size)); 1323 Set_Etype (Index, Standard_Integer); 1324 Set_First_Index (Any_String, Index); 1325 end; 1326 1327 Raise_Type := New_Standard_Entity; 1328 Decl := New_Node (N_Full_Type_Declaration, Stloc); 1329 Set_Defining_Identifier (Decl, Raise_Type); 1330 Set_Scope (Raise_Type, Standard_Standard); 1331 Build_Signed_Integer_Type (Raise_Type, Standard_Integer_Size); 1332 Make_Name (Raise_Type, "any type"); 1333 1334 Standard_Integer_8 := New_Standard_Entity; 1335 Decl := New_Node (N_Full_Type_Declaration, Stloc); 1336 Set_Defining_Identifier (Decl, Standard_Integer_8); 1337 Make_Name (Standard_Integer_8, "integer_8"); 1338 Set_Scope (Standard_Integer_8, Standard_Standard); 1339 Build_Signed_Integer_Type (Standard_Integer_8, 8); 1340 1341 Standard_Integer_16 := New_Standard_Entity; 1342 Decl := New_Node (N_Full_Type_Declaration, Stloc); 1343 Set_Defining_Identifier (Decl, Standard_Integer_16); 1344 Make_Name (Standard_Integer_16, "integer_16"); 1345 Set_Scope (Standard_Integer_16, Standard_Standard); 1346 Build_Signed_Integer_Type (Standard_Integer_16, 16); 1347 1348 Standard_Integer_32 := New_Standard_Entity; 1349 Decl := New_Node (N_Full_Type_Declaration, Stloc); 1350 Set_Defining_Identifier (Decl, Standard_Integer_32); 1351 Make_Name (Standard_Integer_32, "integer_32"); 1352 Set_Scope (Standard_Integer_32, Standard_Standard); 1353 Build_Signed_Integer_Type (Standard_Integer_32, 32); 1354 1355 Standard_Integer_64 := New_Standard_Entity; 1356 Decl := New_Node (N_Full_Type_Declaration, Stloc); 1357 Set_Defining_Identifier (Decl, Standard_Integer_64); 1358 Make_Name (Standard_Integer_64, "integer_64"); 1359 Set_Scope (Standard_Integer_64, Standard_Standard); 1360 Build_Signed_Integer_Type (Standard_Integer_64, 64); 1361 1362 -- Standard_*_Unsigned subtypes are not user visible, but they are 1363 -- used internally. They are unsigned types with the same length as 1364 -- the correspondingly named signed integer types. 1365 1366 Standard_Short_Short_Unsigned := New_Standard_Entity; 1367 Build_Unsigned_Integer_Type 1368 (Standard_Short_Short_Unsigned, 1369 Standard_Short_Short_Integer_Size, 1370 "short_short_unsigned"); 1371 1372 Standard_Short_Unsigned := New_Standard_Entity; 1373 Build_Unsigned_Integer_Type 1374 (Standard_Short_Unsigned, 1375 Standard_Short_Integer_Size, 1376 "short_unsigned"); 1377 1378 Standard_Unsigned := New_Standard_Entity; 1379 Build_Unsigned_Integer_Type 1380 (Standard_Unsigned, 1381 Standard_Integer_Size, 1382 "unsigned"); 1383 1384 Standard_Long_Unsigned := New_Standard_Entity; 1385 Build_Unsigned_Integer_Type 1386 (Standard_Long_Unsigned, 1387 Standard_Long_Integer_Size, 1388 "long_unsigned"); 1389 1390 Standard_Long_Long_Unsigned := New_Standard_Entity; 1391 Build_Unsigned_Integer_Type 1392 (Standard_Long_Long_Unsigned, 1393 Standard_Long_Long_Integer_Size, 1394 "long_long_unsigned"); 1395 1396 -- Standard_Unsigned_64 is not user visible, but is used internally. It 1397 -- is an unsigned type mod 2**64, 64-bits unsigned, size is 64. 1398 1399 Standard_Unsigned_64 := New_Standard_Entity; 1400 Build_Unsigned_Integer_Type (Standard_Unsigned_64, 64, "unsigned_64"); 1401 1402 -- Note: universal integer and universal real are constructed as fully 1403 -- formed signed numeric types, with parameters corresponding to the 1404 -- longest runtime types (Long_Long_Integer and Long_Long_Float). This 1405 -- allows Gigi to properly process references to universal types that 1406 -- are not folded at compile time. 1407 1408 Universal_Integer := New_Standard_Entity; 1409 Decl := New_Node (N_Full_Type_Declaration, Stloc); 1410 Set_Defining_Identifier (Decl, Universal_Integer); 1411 Make_Name (Universal_Integer, "universal_integer"); 1412 Set_Scope (Universal_Integer, Standard_Standard); 1413 Build_Signed_Integer_Type 1414 (Universal_Integer, Standard_Long_Long_Integer_Size); 1415 1416 Universal_Real := New_Standard_Entity; 1417 Decl := New_Node (N_Full_Type_Declaration, Stloc); 1418 Set_Defining_Identifier (Decl, Universal_Real); 1419 Make_Name (Universal_Real, "universal_real"); 1420 Set_Scope (Universal_Real, Standard_Standard); 1421 Copy_Float_Type (Universal_Real, Standard_Long_Long_Float); 1422 1423 -- Note: universal fixed, unlike universal integer and universal real, 1424 -- is never used at runtime, so it does not need to have bounds set. 1425 1426 Universal_Fixed := New_Standard_Entity; 1427 Decl := New_Node (N_Full_Type_Declaration, Stloc); 1428 Set_Defining_Identifier (Decl, Universal_Fixed); 1429 Make_Name (Universal_Fixed, "universal_fixed"); 1430 Set_Ekind (Universal_Fixed, E_Ordinary_Fixed_Point_Type); 1431 Set_Etype (Universal_Fixed, Universal_Fixed); 1432 Set_Scope (Universal_Fixed, Standard_Standard); 1433 Init_Size (Universal_Fixed, Standard_Long_Long_Integer_Size); 1434 Set_Elem_Alignment (Universal_Fixed); 1435 Set_Size_Known_At_Compile_Time 1436 (Universal_Fixed); 1437 1438 -- Create type declaration for Duration, using a 64-bit size. The 1439 -- delta and size values depend on the mode set in system.ads. 1440 1441 Build_Duration : declare 1442 Dlo : Uint; 1443 Dhi : Uint; 1444 Delta_Val : Ureal; 1445 1446 begin 1447 -- In 32 bit mode, the size is 32 bits, and the delta and 1448 -- small values are set to 20 milliseconds (20.0*(10.0**(-3)). 1449 1450 if Duration_32_Bits_On_Target then 1451 Dlo := Intval (Type_Low_Bound (Standard_Integer_32)); 1452 Dhi := Intval (Type_High_Bound (Standard_Integer_32)); 1453 Delta_Val := UR_From_Components (UI_From_Int (20), Uint_3, 10); 1454 1455 -- In standard 64-bit mode, the size is 64-bits and the delta and 1456 -- small values are set to nanoseconds (1.0*(10.0**(-9)) 1457 1458 else 1459 Dlo := Intval (Type_Low_Bound (Standard_Integer_64)); 1460 Dhi := Intval (Type_High_Bound (Standard_Integer_64)); 1461 Delta_Val := UR_From_Components (Uint_1, Uint_9, 10); 1462 end if; 1463 1464 Tdef_Node := Make_Ordinary_Fixed_Point_Definition (Stloc, 1465 Delta_Expression => Make_Real_Literal (Stloc, Delta_Val), 1466 Real_Range_Specification => 1467 Make_Real_Range_Specification (Stloc, 1468 Low_Bound => Make_Real_Literal (Stloc, 1469 Realval => Dlo * Delta_Val), 1470 High_Bound => Make_Real_Literal (Stloc, 1471 Realval => Dhi * Delta_Val))); 1472 1473 Set_Type_Definition (Parent (Standard_Duration), Tdef_Node); 1474 1475 Set_Ekind (Standard_Duration, E_Ordinary_Fixed_Point_Type); 1476 Set_Etype (Standard_Duration, Standard_Duration); 1477 1478 if Duration_32_Bits_On_Target then 1479 Init_Size (Standard_Duration, 32); 1480 else 1481 Init_Size (Standard_Duration, 64); 1482 end if; 1483 1484 Set_Elem_Alignment (Standard_Duration); 1485 Set_Delta_Value (Standard_Duration, Delta_Val); 1486 Set_Small_Value (Standard_Duration, Delta_Val); 1487 Set_Scalar_Range (Standard_Duration, 1488 Real_Range_Specification 1489 (Type_Definition (Parent (Standard_Duration)))); 1490 1491 -- Normally it does not matter that nodes in package Standard are 1492 -- not marked as analyzed. The Scalar_Range of the fixed-point type 1493 -- Standard_Duration is an exception, because of the special test 1494 -- made in Freeze.Freeze_Fixed_Point_Type. 1495 1496 Set_Analyzed (Scalar_Range (Standard_Duration)); 1497 1498 Set_Etype (Type_High_Bound (Standard_Duration), Standard_Duration); 1499 Set_Etype (Type_Low_Bound (Standard_Duration), Standard_Duration); 1500 1501 Set_Is_Static_Expression (Type_High_Bound (Standard_Duration)); 1502 Set_Is_Static_Expression (Type_Low_Bound (Standard_Duration)); 1503 1504 Set_Corresponding_Integer_Value 1505 (Type_High_Bound (Standard_Duration), Dhi); 1506 1507 Set_Corresponding_Integer_Value 1508 (Type_Low_Bound (Standard_Duration), Dlo); 1509 1510 Set_Size_Known_At_Compile_Time (Standard_Duration); 1511 end Build_Duration; 1512 1513 -- Build standard exception type. Note that the type name here is 1514 -- actually used in the generated code, so it must be set correctly. 1515 -- The type Standard_Exception_Type must be consistent with the type 1516 -- System.Standard_Library.Exception_Data, as the latter is what is 1517 -- known by the run-time. Components of the record are documented in 1518 -- the declaration in System.Standard_Library. 1519 1520 Standard_Exception_Type := New_Standard_Entity; 1521 Set_Ekind (Standard_Exception_Type, E_Record_Type); 1522 Set_Etype (Standard_Exception_Type, Standard_Exception_Type); 1523 Set_Scope (Standard_Exception_Type, Standard_Standard); 1524 Set_Stored_Constraint 1525 (Standard_Exception_Type, No_Elist); 1526 Init_Size_Align (Standard_Exception_Type); 1527 Set_Size_Known_At_Compile_Time 1528 (Standard_Exception_Type, True); 1529 Make_Name (Standard_Exception_Type, "exception"); 1530 1531 Make_Component 1532 (Standard_Exception_Type, Standard_Boolean, "Not_Handled_By_Others"); 1533 Make_Component 1534 (Standard_Exception_Type, Standard_Character, "Lang"); 1535 Make_Component 1536 (Standard_Exception_Type, Standard_Natural, "Name_Length"); 1537 Make_Component 1538 (Standard_Exception_Type, Standard_A_Char, "Full_Name"); 1539 Make_Component 1540 (Standard_Exception_Type, Standard_A_Char, "HTable_Ptr"); 1541 Make_Component 1542 (Standard_Exception_Type, Standard_A_Char, "Foreign_Data"); 1543 Make_Component 1544 (Standard_Exception_Type, Standard_A_Char, "Raise_Hook"); 1545 1546 -- Build tree for record declaration, for use by the back-end 1547 1548 declare 1549 Comp_List : List_Id; 1550 Comp : Entity_Id; 1551 1552 begin 1553 Comp := First_Entity (Standard_Exception_Type); 1554 Comp_List := New_List; 1555 while Present (Comp) loop 1556 Append ( 1557 Make_Component_Declaration (Stloc, 1558 Defining_Identifier => Comp, 1559 Component_Definition => 1560 Make_Component_Definition (Stloc, 1561 Aliased_Present => False, 1562 Subtype_Indication => New_Occurrence_Of (Etype (Comp), 1563 Stloc))), 1564 Comp_List); 1565 1566 Next_Entity (Comp); 1567 end loop; 1568 1569 Decl := Make_Full_Type_Declaration (Stloc, 1570 Defining_Identifier => Standard_Exception_Type, 1571 Type_Definition => 1572 Make_Record_Definition (Stloc, 1573 End_Label => Empty, 1574 Component_List => 1575 Make_Component_List (Stloc, 1576 Component_Items => Comp_List))); 1577 end; 1578 1579 Append (Decl, Decl_S); 1580 1581 Layout_Type (Standard_Exception_Type); 1582 1583 -- Create declarations of standard exceptions 1584 1585 Build_Exception (S_Constraint_Error); 1586 Build_Exception (S_Program_Error); 1587 Build_Exception (S_Storage_Error); 1588 Build_Exception (S_Tasking_Error); 1589 1590 -- Numeric_Error is a normal exception in Ada 83, but in Ada 95 1591 -- it is a renaming of Constraint_Error. Is this test too early??? 1592 1593 if Ada_Version = Ada_83 then 1594 Build_Exception (S_Numeric_Error); 1595 1596 else 1597 Decl := New_Node (N_Exception_Renaming_Declaration, Stloc); 1598 E_Id := Standard_Entity (S_Numeric_Error); 1599 1600 Set_Ekind (E_Id, E_Exception); 1601 Set_Exception_Code (E_Id, Uint_0); 1602 Set_Etype (E_Id, Standard_Exception_Type); 1603 Set_Is_Public (E_Id); 1604 Set_Renamed_Entity (E_Id, Standard_Entity (S_Constraint_Error)); 1605 1606 Set_Defining_Identifier (Decl, E_Id); 1607 Append (Decl, Decl_S); 1608 1609 Ident_Node := New_Node (N_Identifier, Stloc); 1610 Set_Chars (Ident_Node, Chars (Standard_Entity (S_Constraint_Error))); 1611 Set_Entity (Ident_Node, Standard_Entity (S_Constraint_Error)); 1612 Set_Name (Decl, Ident_Node); 1613 end if; 1614 1615 -- Abort_Signal is an entity that does not get made visible 1616 1617 Abort_Signal := New_Standard_Entity; 1618 Set_Chars (Abort_Signal, Name_uAbort_Signal); 1619 Set_Ekind (Abort_Signal, E_Exception); 1620 Set_Exception_Code (Abort_Signal, Uint_0); 1621 Set_Etype (Abort_Signal, Standard_Exception_Type); 1622 Set_Scope (Abort_Signal, Standard_Standard); 1623 Set_Is_Public (Abort_Signal, True); 1624 Decl := 1625 Make_Exception_Declaration (Stloc, 1626 Defining_Identifier => Abort_Signal); 1627 1628 -- Create defining identifiers for shift operator entities. Note 1629 -- that these entities are used only for marking shift operators 1630 -- generated internally, and hence need no structure, just a name 1631 -- and a unique identity. 1632 1633 Standard_Op_Rotate_Left := New_Standard_Entity; 1634 Set_Chars (Standard_Op_Rotate_Left, Name_Rotate_Left); 1635 Set_Ekind (Standard_Op_Rotate_Left, E_Operator); 1636 1637 Standard_Op_Rotate_Right := New_Standard_Entity; 1638 Set_Chars (Standard_Op_Rotate_Right, Name_Rotate_Right); 1639 Set_Ekind (Standard_Op_Rotate_Right, E_Operator); 1640 1641 Standard_Op_Shift_Left := New_Standard_Entity; 1642 Set_Chars (Standard_Op_Shift_Left, Name_Shift_Left); 1643 Set_Ekind (Standard_Op_Shift_Left, E_Operator); 1644 1645 Standard_Op_Shift_Right := New_Standard_Entity; 1646 Set_Chars (Standard_Op_Shift_Right, Name_Shift_Right); 1647 Set_Ekind (Standard_Op_Shift_Right, E_Operator); 1648 1649 Standard_Op_Shift_Right_Arithmetic := New_Standard_Entity; 1650 Set_Chars (Standard_Op_Shift_Right_Arithmetic, 1651 Name_Shift_Right_Arithmetic); 1652 Set_Ekind (Standard_Op_Shift_Right_Arithmetic, 1653 E_Operator); 1654 1655 -- Create standard operator declarations 1656 1657 Create_Operators; 1658 1659 -- Initialize visibility table with entities in Standard 1660 1661 for E in Standard_Entity_Type loop 1662 if Ekind (Standard_Entity (E)) /= E_Operator then 1663 Set_Name_Entity_Id 1664 (Chars (Standard_Entity (E)), Standard_Entity (E)); 1665 Set_Homonym (Standard_Entity (E), Empty); 1666 end if; 1667 1668 if E not in S_ASCII_Names then 1669 Set_Scope (Standard_Entity (E), Standard_Standard); 1670 Set_Is_Immediately_Visible (Standard_Entity (E)); 1671 end if; 1672 end loop; 1673 1674 -- The predefined package Standard itself does not have a scope; 1675 -- it is the only entity in the system not to have one, and this 1676 -- is what identifies the package to Gigi. 1677 1678 Set_Scope (Standard_Standard, Empty); 1679 1680 -- Set global variables indicating last Id values and version 1681 1682 Last_Standard_Node_Id := Last_Node_Id; 1683 Last_Standard_List_Id := Last_List_Id; 1684 1685 -- The Error node has an Etype of Any_Type to help error recovery 1686 1687 Set_Etype (Error, Any_Type); 1688 1689 -- Print representation of standard if switch set 1690 1691 if Opt.Print_Standard then 1692 Print_Standard; 1693 end if; 1694 end Create_Standard; 1695 1696 ------------------------------------ 1697 -- Create_Unconstrained_Base_Type -- 1698 ------------------------------------ 1699 1700 procedure Create_Unconstrained_Base_Type 1701 (E : Entity_Id; 1702 K : Entity_Kind) 1703 is 1704 New_Ent : constant Entity_Id := New_Copy (E); 1705 1706 begin 1707 Set_Ekind (E, K); 1708 Set_Is_Constrained (E, True); 1709 Set_Is_First_Subtype (E, True); 1710 Set_Etype (E, New_Ent); 1711 1712 Append_Entity (New_Ent, Standard_Standard); 1713 Set_Is_Constrained (New_Ent, False); 1714 Set_Etype (New_Ent, New_Ent); 1715 Set_Is_Known_Valid (New_Ent, True); 1716 1717 if K = E_Signed_Integer_Subtype then 1718 Set_Etype (Low_Bound (Scalar_Range (E)), New_Ent); 1719 Set_Etype (High_Bound (Scalar_Range (E)), New_Ent); 1720 end if; 1721 1722 end Create_Unconstrained_Base_Type; 1723 1724 -------------------- 1725 -- Identifier_For -- 1726 -------------------- 1727 1728 function Identifier_For (S : Standard_Entity_Type) return Node_Id is 1729 Ident_Node : Node_Id; 1730 begin 1731 Ident_Node := New_Node (N_Identifier, Stloc); 1732 Set_Chars (Ident_Node, Chars (Standard_Entity (S))); 1733 Set_Entity (Ident_Node, Standard_Entity (S)); 1734 return Ident_Node; 1735 end Identifier_For; 1736 1737 -------------------- 1738 -- Make_Component -- 1739 -------------------- 1740 1741 procedure Make_Component 1742 (Rec : Entity_Id; 1743 Typ : Entity_Id; 1744 Nam : String) 1745 is 1746 Id : constant Entity_Id := New_Standard_Entity; 1747 1748 begin 1749 Set_Ekind (Id, E_Component); 1750 Set_Etype (Id, Typ); 1751 Set_Scope (Id, Rec); 1752 Init_Component_Location (Id); 1753 1754 Set_Original_Record_Component (Id, Id); 1755 Make_Name (Id, Nam); 1756 Append_Entity (Id, Rec); 1757 end Make_Component; 1758 1759 ----------------- 1760 -- Make_Formal -- 1761 ----------------- 1762 1763 function Make_Formal 1764 (Typ : Entity_Id; 1765 Formal_Name : String) return Entity_Id 1766 is 1767 Formal : Entity_Id; 1768 1769 begin 1770 Formal := New_Standard_Entity; 1771 1772 Set_Ekind (Formal, E_In_Parameter); 1773 Set_Mechanism (Formal, Default_Mechanism); 1774 Set_Scope (Formal, Standard_Standard); 1775 Set_Etype (Formal, Typ); 1776 Make_Name (Formal, Formal_Name); 1777 1778 return Formal; 1779 end Make_Formal; 1780 1781 ------------------ 1782 -- Make_Integer -- 1783 ------------------ 1784 1785 function Make_Integer (V : Uint) return Node_Id is 1786 N : constant Node_Id := Make_Integer_Literal (Stloc, V); 1787 begin 1788 Set_Is_Static_Expression (N); 1789 return N; 1790 end Make_Integer; 1791 1792 --------------- 1793 -- Make_Name -- 1794 --------------- 1795 1796 procedure Make_Name (Id : Entity_Id; Nam : String) is 1797 begin 1798 for J in 1 .. Nam'Length loop 1799 Name_Buffer (J) := Fold_Lower (Nam (Nam'First + (J - 1))); 1800 end loop; 1801 1802 Name_Len := Nam'Length; 1803 Set_Chars (Id, Name_Find); 1804 end Make_Name; 1805 1806 ------------------ 1807 -- New_Operator -- 1808 ------------------ 1809 1810 function New_Operator (Op : Name_Id; Typ : Entity_Id) return Entity_Id is 1811 Ident_Node : Entity_Id; 1812 1813 begin 1814 Ident_Node := Make_Defining_Identifier (Stloc, Op); 1815 1816 Set_Is_Pure (Ident_Node, True); 1817 Set_Ekind (Ident_Node, E_Operator); 1818 Set_Etype (Ident_Node, Typ); 1819 Set_Scope (Ident_Node, Standard_Standard); 1820 Set_Homonym (Ident_Node, Get_Name_Entity_Id (Op)); 1821 Set_Convention (Ident_Node, Convention_Intrinsic); 1822 1823 Set_Is_Immediately_Visible (Ident_Node, True); 1824 Set_Is_Intrinsic_Subprogram (Ident_Node, True); 1825 1826 Set_Name_Entity_Id (Op, Ident_Node); 1827 Append_Entity (Ident_Node, Standard_Standard); 1828 return Ident_Node; 1829 end New_Operator; 1830 1831 ------------------------- 1832 -- New_Standard_Entity -- 1833 ------------------------- 1834 1835 function New_Standard_Entity 1836 (New_Node_Kind : Node_Kind := N_Defining_Identifier) return Entity_Id 1837 is 1838 E : constant Entity_Id := New_Entity (New_Node_Kind, Stloc); 1839 1840 begin 1841 -- All standard entities are Pure and Public 1842 1843 Set_Is_Pure (E); 1844 Set_Is_Public (E); 1845 1846 -- All standard entity names are analyzed manually, and are thus 1847 -- frozen as soon as they are created. 1848 1849 Set_Is_Frozen (E); 1850 1851 -- Set debug information required for all standard types 1852 1853 Set_Needs_Debug_Info (E); 1854 1855 -- All standard entities are built with fully qualified names, so 1856 -- set the flag to prevent an abortive attempt at requalification. 1857 1858 Set_Has_Qualified_Name (E); 1859 1860 -- Return newly created entity to be completed by caller 1861 1862 return E; 1863 end New_Standard_Entity; 1864 1865 -------------------- 1866 -- Print_Standard -- 1867 -------------------- 1868 1869 procedure Print_Standard is 1870 1871 procedure P (Item : String) renames Output.Write_Line; 1872 -- Short-hand, since we do a lot of line writes here 1873 1874 procedure P_Int_Range (Size : Pos); 1875 -- Prints the range of an integer based on its Size 1876 1877 procedure P_Float_Range (Id : Entity_Id); 1878 -- Prints the bounds range for the given float type entity 1879 1880 procedure P_Float_Type (Id : Entity_Id); 1881 -- Prints the type declaration of the given float type entity 1882 1883 procedure P_Mixed_Name (Id : Name_Id); 1884 -- Prints Id in mixed case 1885 1886 ------------------- 1887 -- P_Float_Range -- 1888 ------------------- 1889 1890 procedure P_Float_Range (Id : Entity_Id) is 1891 begin 1892 Write_Str (" range "); 1893 UR_Write (Realval (Type_Low_Bound (Id))); 1894 Write_Str (" .. "); 1895 UR_Write (Realval (Type_High_Bound (Id))); 1896 Write_Str (";"); 1897 Write_Eol; 1898 end P_Float_Range; 1899 1900 ------------------ 1901 -- P_Float_Type -- 1902 ------------------ 1903 1904 procedure P_Float_Type (Id : Entity_Id) is 1905 begin 1906 Write_Str (" type "); 1907 P_Mixed_Name (Chars (Id)); 1908 Write_Str (" is digits "); 1909 Write_Int (UI_To_Int (Digits_Value (Id))); 1910 Write_Eol; 1911 P_Float_Range (Id); 1912 Write_Str (" for "); 1913 P_Mixed_Name (Chars (Id)); 1914 Write_Str ("'Size use "); 1915 Write_Int (UI_To_Int (RM_Size (Id))); 1916 Write_Line (";"); 1917 Write_Eol; 1918 end P_Float_Type; 1919 1920 ----------------- 1921 -- P_Int_Range -- 1922 ----------------- 1923 1924 procedure P_Int_Range (Size : Pos) is 1925 begin 1926 Write_Str (" is range -(2 **"); 1927 Write_Int (Size - 1); 1928 Write_Str (")"); 1929 Write_Str (" .. +(2 **"); 1930 Write_Int (Size - 1); 1931 Write_Str (" - 1);"); 1932 Write_Eol; 1933 end P_Int_Range; 1934 1935 ------------------ 1936 -- P_Mixed_Name -- 1937 ------------------ 1938 1939 procedure P_Mixed_Name (Id : Name_Id) is 1940 begin 1941 Get_Name_String (Id); 1942 1943 for J in 1 .. Name_Len loop 1944 if J = 1 or else Name_Buffer (J - 1) = '_' then 1945 Name_Buffer (J) := Fold_Upper (Name_Buffer (J)); 1946 end if; 1947 end loop; 1948 1949 Write_Str (Name_Buffer (1 .. Name_Len)); 1950 end P_Mixed_Name; 1951 1952 -- Start of processing for Print_Standard 1953 1954 begin 1955 P ("-- Representation of package Standard"); 1956 Write_Eol; 1957 P ("-- This is not accurate Ada, since new base types cannot be "); 1958 P ("-- created, but the listing shows the target dependent"); 1959 P ("-- characteristics of the Standard types for this compiler"); 1960 Write_Eol; 1961 1962 P ("package Standard is"); 1963 P ("pragma Pure (Standard);"); 1964 Write_Eol; 1965 1966 P (" type Boolean is (False, True);"); 1967 P (" for Boolean'Size use 1;"); 1968 P (" for Boolean use (False => 0, True => 1);"); 1969 Write_Eol; 1970 1971 -- Integer types 1972 1973 Write_Str (" type Integer"); 1974 P_Int_Range (Standard_Integer_Size); 1975 Write_Str (" for Integer'Size use "); 1976 Write_Int (Standard_Integer_Size); 1977 P (";"); 1978 Write_Eol; 1979 1980 P (" subtype Natural is Integer range 0 .. Integer'Last;"); 1981 P (" subtype Positive is Integer range 1 .. Integer'Last;"); 1982 Write_Eol; 1983 1984 Write_Str (" type Short_Short_Integer"); 1985 P_Int_Range (Standard_Short_Short_Integer_Size); 1986 Write_Str (" for Short_Short_Integer'Size use "); 1987 Write_Int (Standard_Short_Short_Integer_Size); 1988 P (";"); 1989 Write_Eol; 1990 1991 Write_Str (" type Short_Integer"); 1992 P_Int_Range (Standard_Short_Integer_Size); 1993 Write_Str (" for Short_Integer'Size use "); 1994 Write_Int (Standard_Short_Integer_Size); 1995 P (";"); 1996 Write_Eol; 1997 1998 Write_Str (" type Long_Integer"); 1999 P_Int_Range (Standard_Long_Integer_Size); 2000 Write_Str (" for Long_Integer'Size use "); 2001 Write_Int (Standard_Long_Integer_Size); 2002 P (";"); 2003 Write_Eol; 2004 2005 Write_Str (" type Long_Long_Integer"); 2006 P_Int_Range (Standard_Long_Long_Integer_Size); 2007 Write_Str (" for Long_Long_Integer'Size use "); 2008 Write_Int (Standard_Long_Long_Integer_Size); 2009 P (";"); 2010 Write_Eol; 2011 2012 -- Floating point types 2013 2014 P_Float_Type (Standard_Short_Float); 2015 P_Float_Type (Standard_Float); 2016 P_Float_Type (Standard_Long_Float); 2017 P_Float_Type (Standard_Long_Long_Float); 2018 2019 P (" type Character is (...)"); 2020 Write_Str (" for Character'Size use "); 2021 Write_Int (Standard_Character_Size); 2022 P (";"); 2023 P (" -- See RM A.1(35) for details of this type"); 2024 Write_Eol; 2025 2026 P (" type Wide_Character is (...)"); 2027 Write_Str (" for Wide_Character'Size use "); 2028 Write_Int (Standard_Wide_Character_Size); 2029 P (";"); 2030 P (" -- See RM A.1(36) for details of this type"); 2031 Write_Eol; 2032 2033 P (" type Wide_Wide_Character is (...)"); 2034 Write_Str (" for Wide_Wide_Character'Size use "); 2035 Write_Int (Standard_Wide_Wide_Character_Size); 2036 P (";"); 2037 P (" -- See RM A.1(36) for details of this type"); 2038 2039 P (" type String is array (Positive range <>) of Character;"); 2040 P (" pragma Pack (String);"); 2041 Write_Eol; 2042 2043 P (" type Wide_String is array (Positive range <>)" & 2044 " of Wide_Character;"); 2045 P (" pragma Pack (Wide_String);"); 2046 Write_Eol; 2047 2048 P (" type Wide_Wide_String is array (Positive range <>)" & 2049 " of Wide_Wide_Character;"); 2050 P (" pragma Pack (Wide_Wide_String);"); 2051 Write_Eol; 2052 2053 -- We only have one representation each for 32-bit and 64-bit sizes, 2054 -- so select the right one based on Duration_32_Bits_On_Target. 2055 2056 if Duration_32_Bits_On_Target then 2057 P (" type Duration is delta 0.020"); 2058 P (" range -((2 ** 31 - 1) * 0.020) .."); 2059 P (" +((2 ** 31 - 1) * 0.020);"); 2060 P (" for Duration'Small use 0.020;"); 2061 2062 else 2063 P (" type Duration is delta 0.000000001"); 2064 P (" range -((2 ** 63 - 1) * 0.000000001) .."); 2065 P (" +((2 ** 63 - 1) * 0.000000001);"); 2066 P (" for Duration'Small use 0.000000001;"); 2067 end if; 2068 2069 Write_Eol; 2070 2071 P (" Constraint_Error : exception;"); 2072 P (" Program_Error : exception;"); 2073 P (" Storage_Error : exception;"); 2074 P (" Tasking_Error : exception;"); 2075 P (" Numeric_Error : exception renames Constraint_Error;"); 2076 Write_Eol; 2077 2078 P ("end Standard;"); 2079 end Print_Standard; 2080 2081 ------------------------- 2082 -- Register_Float_Type -- 2083 ------------------------- 2084 2085 procedure Register_Float_Type 2086 (Name : String; 2087 Digs : Positive; 2088 Float_Rep : Float_Rep_Kind; 2089 Precision : Positive; 2090 Size : Positive; 2091 Alignment : Natural) 2092 is 2093 Ent : constant Entity_Id := New_Standard_Entity; 2094 2095 begin 2096 Set_Defining_Identifier (New_Node (N_Full_Type_Declaration, Stloc), Ent); 2097 Make_Name (Ent, Name); 2098 Set_Scope (Ent, Standard_Standard); 2099 Build_Float_Type (Ent, Int (Size), Float_Rep, Pos (Digs)); 2100 Set_RM_Size (Ent, UI_From_Int (Int (Precision))); 2101 Set_Alignment (Ent, UI_From_Int (Int (Alignment / 8))); 2102 2103 if No (Back_End_Float_Types) then 2104 Back_End_Float_Types := New_Elmt_List; 2105 end if; 2106 2107 Append_Elmt (Ent, Back_End_Float_Types); 2108 end Register_Float_Type; 2109 2110 ---------------------- 2111 -- Set_Float_Bounds -- 2112 ---------------------- 2113 2114 procedure Set_Float_Bounds (Id : Entity_Id) is 2115 L : Node_Id; 2116 H : Node_Id; 2117 -- Low and high bounds of literal value 2118 2119 R : Node_Id; 2120 -- Range specification 2121 2122 Radix : constant Uint := Machine_Radix_Value (Id); 2123 Mantissa : constant Uint := Machine_Mantissa_Value (Id); 2124 Emax : constant Uint := Machine_Emax_Value (Id); 2125 Significand : constant Uint := Radix ** Mantissa - 1; 2126 Exponent : constant Uint := Emax - Mantissa; 2127 2128 begin 2129 -- Note: for the call from Cstand to initially create the types in 2130 -- Standard, Float_Rep will never be VAX_Native. Circuitry in Sem_Vfpt 2131 -- will adjust these types appropriately VAX_Native if a pragma 2132 -- Float_Representation (VAX_Float) is used. 2133 2134 H := Make_Float_Literal (Stloc, Radix, Significand, Exponent); 2135 L := Make_Float_Literal (Stloc, Radix, -Significand, Exponent); 2136 2137 Set_Etype (L, Id); 2138 Set_Is_Static_Expression (L); 2139 2140 Set_Etype (H, Id); 2141 Set_Is_Static_Expression (H); 2142 2143 R := New_Node (N_Range, Stloc); 2144 Set_Low_Bound (R, L); 2145 Set_High_Bound (R, H); 2146 Set_Includes_Infinities (R, True); 2147 Set_Scalar_Range (Id, R); 2148 Set_Etype (R, Id); 2149 Set_Parent (R, Id); 2150 end Set_Float_Bounds; 2151 2152 ------------------------ 2153 -- Set_Integer_Bounds -- 2154 ------------------------ 2155 2156 procedure Set_Integer_Bounds 2157 (Id : Entity_Id; 2158 Typ : Entity_Id; 2159 Lb : Uint; 2160 Hb : Uint) 2161 is 2162 L : Node_Id; 2163 H : Node_Id; 2164 -- Low and high bounds of literal value 2165 2166 R : Node_Id; 2167 -- Range specification 2168 2169 begin 2170 L := Make_Integer (Lb); 2171 H := Make_Integer (Hb); 2172 2173 Set_Etype (L, Typ); 2174 Set_Etype (H, Typ); 2175 2176 R := New_Node (N_Range, Stloc); 2177 Set_Low_Bound (R, L); 2178 Set_High_Bound (R, H); 2179 Set_Scalar_Range (Id, R); 2180 Set_Etype (R, Typ); 2181 Set_Parent (R, Id); 2182 Set_Is_Unsigned_Type (Id, Lb >= 0); 2183 end Set_Integer_Bounds; 2184 2185end CStand; 2186