1------------------------------------------------------------------------------ 2-- -- 3-- GNAT COMPILER COMPONENTS -- 4-- -- 5-- C S T A N D -- 6-- -- 7-- B o d y -- 8-- -- 9-- Copyright (C) 1992-2012, 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 Back_End; use Back_End; 28with Csets; use Csets; 29with Debug; use Debug; 30with Einfo; use Einfo; 31with Elists; use Elists; 32with Layout; use Layout; 33with Namet; use Namet; 34with Nlists; use Nlists; 35with Nmake; use Nmake; 36with Opt; use Opt; 37with Output; use Output; 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 : Int); 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 Copy_Float_Type (To : Entity_Id; From : Entity_Id); 83 -- Build a floating point type, copying representation details from From. 84 -- This is used to create predefined floating point types based on 85 -- available types in the back end. 86 87 procedure Create_Operators; 88 -- Make entries for each of the predefined operators in Standard 89 90 procedure Create_Unconstrained_Base_Type 91 (E : Entity_Id; 92 K : Entity_Kind); 93 -- The predefined signed integer types are constrained subtypes which 94 -- must have a corresponding unconstrained base type. This type is almost 95 -- useless. The only place it has semantics is Subtypes_Statically_Match. 96 -- Consequently, we arrange for it to be identical apart from the setting 97 -- of the constrained bit. This routine takes an entity E for the Type, 98 -- copies it to estabish the base type, then resets the Ekind of the 99 -- original entity to K (the Ekind for the subtype). The Etype field of 100 -- E is set by the call (to point to the created base type entity), and 101 -- also the Is_Constrained flag of E is set. 102 -- 103 -- To understand the exact requirement for this, see RM 3.5.4(11) which 104 -- makes it clear that Integer, for example, is constrained, with the 105 -- constraint bounds matching the bounds of the (unconstrained) base 106 -- type. The point is that Integer and Integer'Base have identical 107 -- bounds, but do not statically match, since a subtype with constraints 108 -- never matches a subtype with no constraints. 109 110 function Find_Back_End_Float_Type (Name : String) return Entity_Id; 111 -- Return the first float type in Back_End_Float_Types with the given name. 112 -- Names of entities in back end types, are either type names of C 113 -- predefined types (all lower case), or mode names (upper case). 114 -- These are not generally valid identifier names. 115 116 function Identifier_For (S : Standard_Entity_Type) return Node_Id; 117 -- Returns an identifier node with the same name as the defining 118 -- identifier corresponding to the given Standard_Entity_Type value 119 120 procedure Make_Component 121 (Rec : Entity_Id; 122 Typ : Entity_Id; 123 Nam : String); 124 -- Build a record component with the given type and name, and append to 125 -- the list of components of Rec. 126 127 function Make_Formal 128 (Typ : Entity_Id; 129 Formal_Name : String) return Entity_Id; 130 -- Construct entity for subprogram formal with given name and type 131 132 function Make_Integer (V : Uint) return Node_Id; 133 -- Builds integer literal with given value 134 135 procedure Make_Name (Id : Entity_Id; Nam : String); 136 -- Make an entry in the names table for Nam, and set as Chars field of Id 137 138 function New_Operator (Op : Name_Id; Typ : Entity_Id) return Entity_Id; 139 -- Build entity for standard operator with given name and type 140 141 function New_Standard_Entity 142 (New_Node_Kind : Node_Kind := N_Defining_Identifier) return Entity_Id; 143 -- Builds a new entity for Standard 144 145 procedure Print_Standard; 146 -- Print representation of package Standard if switch set 147 148 procedure Register_Float_Type 149 (Name : C_String; -- Nul-terminated string with name of type 150 Digs : Natural; -- Nr or digits for floating point, 0 otherwise 151 Complex : Boolean; -- True iff type has real and imaginary parts 152 Count : Natural; -- Number of elements in vector, 0 otherwise 153 Float_Rep : Float_Rep_Kind; -- Representation used for fpt type 154 Precision : Positive; -- Precision of representation in bits 155 Size : Positive; -- Size of representation in bits 156 Alignment : Natural); -- Required alignment in bits 157 pragma Convention (C, Register_Float_Type); 158 -- Call back to allow the back end to register available types. 159 -- This call back currently creates predefined floating point base types 160 -- for any floating point types reported by the back end, and adds them 161 -- to the list of predefined float types. 162 163 procedure Set_Integer_Bounds 164 (Id : Entity_Id; 165 Typ : Entity_Id; 166 Lb : Uint; 167 Hb : Uint); 168 -- Procedure to set bounds for integer type or subtype. Id is the entity 169 -- whose bounds and type are to be set. The Typ parameter is the Etype 170 -- value for the entity (which will be the same as Id for all predefined 171 -- integer base types. The third and fourth parameters are the bounds. 172 173 ---------------------- 174 -- Build_Float_Type -- 175 ---------------------- 176 177 procedure Build_Float_Type 178 (E : Entity_Id; 179 Siz : Int; 180 Rep : Float_Rep_Kind; 181 Digs : Int) 182 is 183 begin 184 Set_Type_Definition (Parent (E), 185 Make_Floating_Point_Definition (Stloc, 186 Digits_Expression => Make_Integer (UI_From_Int (Digs)))); 187 188 Set_Ekind (E, E_Floating_Point_Type); 189 Set_Etype (E, E); 190 Set_Float_Rep (E, Rep); 191 Init_Size (E, Siz); 192 Set_Elem_Alignment (E); 193 Init_Digits_Value (E, Digs); 194 Set_Float_Bounds (E); 195 Set_Is_Frozen (E); 196 Set_Is_Public (E); 197 Set_Size_Known_At_Compile_Time (E); 198 end Build_Float_Type; 199 200 ------------------------------ 201 -- Find_Back_End_Float_Type -- 202 ------------------------------ 203 204 function Find_Back_End_Float_Type (Name : String) return Entity_Id is 205 N : Elmt_Id; 206 207 begin 208 N := First_Elmt (Back_End_Float_Types); 209 while Present (N) and then Get_Name_String (Chars (Node (N))) /= Name 210 loop 211 Next_Elmt (N); 212 end loop; 213 214 return Node (N); 215 end Find_Back_End_Float_Type; 216 217 ------------------------------- 218 -- Build_Signed_Integer_Type -- 219 ------------------------------- 220 221 procedure Build_Signed_Integer_Type (E : Entity_Id; Siz : Int) is 222 U2Siz1 : constant Uint := 2 ** (Siz - 1); 223 Lbound : constant Uint := -U2Siz1; 224 Ubound : constant Uint := U2Siz1 - 1; 225 226 begin 227 Set_Type_Definition (Parent (E), 228 Make_Signed_Integer_Type_Definition (Stloc, 229 Low_Bound => Make_Integer (Lbound), 230 High_Bound => Make_Integer (Ubound))); 231 232 Set_Ekind (E, E_Signed_Integer_Type); 233 Set_Etype (E, E); 234 Init_Size (E, Siz); 235 Set_Elem_Alignment (E); 236 Set_Integer_Bounds (E, E, Lbound, Ubound); 237 Set_Is_Frozen (E); 238 Set_Is_Public (E); 239 Set_Is_Known_Valid (E); 240 Set_Size_Known_At_Compile_Time (E); 241 end Build_Signed_Integer_Type; 242 243 --------------------- 244 -- Copy_Float_Type -- 245 --------------------- 246 247 procedure Copy_Float_Type (To : Entity_Id; From : Entity_Id) is 248 begin 249 Build_Float_Type (To, UI_To_Int (Esize (From)), Float_Rep (From), 250 UI_To_Int (Digits_Value (From))); 251 end Copy_Float_Type; 252 253 ---------------------- 254 -- Create_Operators -- 255 ---------------------- 256 257 -- Each operator has an abbreviated signature. The formals have the names 258 -- LEFT and RIGHT. Their types are not actually used for resolution. 259 260 procedure Create_Operators is 261 Op_Node : Entity_Id; 262 263 -- The following tables define the binary and unary operators and their 264 -- corresponding result type. 265 266 Binary_Ops : constant array (S_Binary_Ops) of Name_Id := 267 268 -- There is one entry here for each binary operator, except for the 269 -- case of concatenation, where there are three entries, one for a 270 -- String result, one for Wide_String, and one for Wide_Wide_String. 271 272 (Name_Op_Add, 273 Name_Op_And, 274 Name_Op_Concat, 275 Name_Op_Concat, 276 Name_Op_Concat, 277 Name_Op_Divide, 278 Name_Op_Eq, 279 Name_Op_Expon, 280 Name_Op_Ge, 281 Name_Op_Gt, 282 Name_Op_Le, 283 Name_Op_Lt, 284 Name_Op_Mod, 285 Name_Op_Multiply, 286 Name_Op_Ne, 287 Name_Op_Or, 288 Name_Op_Rem, 289 Name_Op_Subtract, 290 Name_Op_Xor); 291 292 Bin_Op_Types : constant array (S_Binary_Ops) of Entity_Id := 293 294 -- This table has the corresponding result types. The entries are 295 -- ordered so they correspond to the Binary_Ops array above. 296 297 (Universal_Integer, -- Add 298 Standard_Boolean, -- And 299 Standard_String, -- Concat (String) 300 Standard_Wide_String, -- Concat (Wide_String) 301 Standard_Wide_Wide_String, -- Concat (Wide_Wide_String) 302 Universal_Integer, -- Divide 303 Standard_Boolean, -- Eq 304 Universal_Integer, -- Expon 305 Standard_Boolean, -- Ge 306 Standard_Boolean, -- Gt 307 Standard_Boolean, -- Le 308 Standard_Boolean, -- Lt 309 Universal_Integer, -- Mod 310 Universal_Integer, -- Multiply 311 Standard_Boolean, -- Ne 312 Standard_Boolean, -- Or 313 Universal_Integer, -- Rem 314 Universal_Integer, -- Subtract 315 Standard_Boolean); -- Xor 316 317 Unary_Ops : constant array (S_Unary_Ops) of Name_Id := 318 319 -- There is one entry here for each unary operator 320 321 (Name_Op_Abs, 322 Name_Op_Subtract, 323 Name_Op_Not, 324 Name_Op_Add); 325 326 Unary_Op_Types : constant array (S_Unary_Ops) of Entity_Id := 327 328 -- This table has the corresponding result types. The entries are 329 -- ordered so they correspond to the Unary_Ops array above. 330 331 (Universal_Integer, -- Abs 332 Universal_Integer, -- Subtract 333 Standard_Boolean, -- Not 334 Universal_Integer); -- Add 335 336 begin 337 for J in S_Binary_Ops loop 338 Op_Node := New_Operator (Binary_Ops (J), Bin_Op_Types (J)); 339 SE (J) := Op_Node; 340 Append_Entity (Make_Formal (Any_Type, "LEFT"), Op_Node); 341 Append_Entity (Make_Formal (Any_Type, "RIGHT"), Op_Node); 342 end loop; 343 344 for J in S_Unary_Ops loop 345 Op_Node := New_Operator (Unary_Ops (J), Unary_Op_Types (J)); 346 SE (J) := Op_Node; 347 Append_Entity (Make_Formal (Any_Type, "RIGHT"), Op_Node); 348 end loop; 349 350 -- For concatenation, we create a separate operator for each 351 -- array type. This simplifies the resolution of the component- 352 -- component concatenation operation. In Standard, we set the types 353 -- of the formals for string, wide [wide]_string, concatenations. 354 355 Set_Etype (First_Entity (Standard_Op_Concat), Standard_String); 356 Set_Etype (Last_Entity (Standard_Op_Concat), Standard_String); 357 358 Set_Etype (First_Entity (Standard_Op_Concatw), Standard_Wide_String); 359 Set_Etype (Last_Entity (Standard_Op_Concatw), Standard_Wide_String); 360 361 Set_Etype (First_Entity (Standard_Op_Concatww), 362 Standard_Wide_Wide_String); 363 364 Set_Etype (Last_Entity (Standard_Op_Concatww), 365 Standard_Wide_Wide_String); 366 end Create_Operators; 367 368 --------------------- 369 -- Create_Standard -- 370 --------------------- 371 372 -- The tree for the package Standard is prefixed to all compilations. 373 -- Several entities required by semantic analysis are denoted by global 374 -- variables that are initialized to point to the corresponding occurrences 375 -- in Standard. The visible entities of Standard are created here. Special 376 -- entities maybe created here as well or may be created from the semantics 377 -- module. By not adding them to the Decls list of Standard they will not 378 -- be visible to Ada programs. 379 380 procedure Create_Standard is 381 Decl_S : constant List_Id := New_List; 382 -- List of declarations in Standard 383 384 Decl_A : constant List_Id := New_List; 385 -- List of declarations in ASCII 386 387 Decl : Node_Id; 388 Pspec : Node_Id; 389 Tdef_Node : Node_Id; 390 Ident_Node : Node_Id; 391 Ccode : Char_Code; 392 E_Id : Entity_Id; 393 R_Node : Node_Id; 394 B_Node : Node_Id; 395 396 procedure Build_Exception (S : Standard_Entity_Type); 397 -- Procedure to declare given entity as an exception 398 399 procedure Create_Back_End_Float_Types; 400 -- Initialize the Back_End_Float_Types list by having the back end 401 -- enumerate all available types and building type entities for them. 402 403 procedure Create_Float_Types; 404 -- Creates entities for all predefined floating point types, and 405 -- adds these to the Predefined_Float_Types list in package Standard. 406 407 procedure Pack_String_Type (String_Type : Entity_Id); 408 -- Generate proper tree for pragma Pack that applies to given type, and 409 -- mark type as having the pragma. 410 411 --------------------- 412 -- Build_Exception -- 413 --------------------- 414 415 procedure Build_Exception (S : Standard_Entity_Type) is 416 begin 417 Set_Ekind (Standard_Entity (S), E_Exception); 418 Set_Etype (Standard_Entity (S), Standard_Exception_Type); 419 Set_Exception_Code (Standard_Entity (S), Uint_0); 420 Set_Is_Public (Standard_Entity (S), True); 421 422 Decl := 423 Make_Exception_Declaration (Stloc, 424 Defining_Identifier => Standard_Entity (S)); 425 Append (Decl, Decl_S); 426 end Build_Exception; 427 428 --------------------------- 429 -- Create_Back_End_Float_Types -- 430 --------------------------- 431 432 procedure Create_Back_End_Float_Types is 433 begin 434 Back_End_Float_Types := No_Elist; 435 Register_Back_End_Types (Register_Float_Type'Access); 436 end Create_Back_End_Float_Types; 437 438 ------------------------ 439 -- Create_Float_Types -- 440 ------------------------ 441 442 procedure Create_Float_Types is 443 begin 444 -- Create type definition nodes for predefined float types 445 446 Copy_Float_Type 447 (Standard_Short_Float, 448 Find_Back_End_Float_Type ("float")); 449 Set_Is_Implementation_Defined (Standard_Short_Float); 450 451 Copy_Float_Type (Standard_Float, Standard_Short_Float); 452 453 Copy_Float_Type (Standard_Long_Float, 454 Find_Back_End_Float_Type ("double")); 455 456 Predefined_Float_Types := New_Elmt_List; 457 Append_Elmt (Standard_Short_Float, Predefined_Float_Types); 458 Append_Elmt (Standard_Float, Predefined_Float_Types); 459 Append_Elmt (Standard_Long_Float, Predefined_Float_Types); 460 461 -- ??? For now, we don't have a good way to tell the widest float 462 -- type with hardware support. Basically, GCC knows the size of that 463 -- type, but on x86-64 there often are two or three 128-bit types, 464 -- one double extended that has 18 decimal digits, a 128-bit quad 465 -- precision type with 33 digits and possibly a 128-bit decimal float 466 -- type with 34 digits. As a workaround, we define Long_Long_Float as 467 -- C's "long double" if that type exists and has at most 18 digits, 468 -- or otherwise the same as Long_Float. 469 470 declare 471 Max_HW_Digs : constant := 18; 472 -- Maximum hardware digits supported 473 474 LLF : Entity_Id := Find_Back_End_Float_Type ("long double"); 475 -- Entity for long double type 476 477 begin 478 if No (LLF) or else Digits_Value (LLF) > Max_HW_Digs then 479 LLF := Standard_Long_Float; 480 end if; 481 482 Set_Is_Implementation_Defined (Standard_Long_Long_Float); 483 Copy_Float_Type (Standard_Long_Long_Float, LLF); 484 485 Append_Elmt (Standard_Long_Long_Float, Predefined_Float_Types); 486 end; 487 488 -- Any other back end types are appended at the end of the list of 489 -- predefined float types, and will only be selected if the none of 490 -- the types in Standard is suitable, or if a specific named type is 491 -- requested through a pragma Import. 492 493 while not Is_Empty_Elmt_List (Back_End_Float_Types) loop 494 declare 495 E : constant Elmt_Id := First_Elmt (Back_End_Float_Types); 496 begin 497 Append_Elmt (Node (E), To => Predefined_Float_Types); 498 Remove_Elmt (Back_End_Float_Types, E); 499 end; 500 end loop; 501 end Create_Float_Types; 502 503 ---------------------- 504 -- Pack_String_Type -- 505 ---------------------- 506 507 procedure Pack_String_Type (String_Type : Entity_Id) is 508 Prag : constant Node_Id := 509 Make_Pragma (Stloc, 510 Chars => Name_Pack, 511 Pragma_Argument_Associations => 512 New_List ( 513 Make_Pragma_Argument_Association (Stloc, 514 Expression => New_Occurrence_Of (String_Type, Stloc)))); 515 begin 516 Append (Prag, Decl_S); 517 Record_Rep_Item (String_Type, Prag); 518 Set_Has_Pragma_Pack (String_Type, True); 519 end Pack_String_Type; 520 521 -- Start of processing for Create_Standard 522 523 begin 524 -- Initialize scanner for internal scans of literals 525 526 Scn.Initialize_Scanner (No_Unit, Internal_Source_File); 527 528 -- First step is to create defining identifiers for each entity 529 530 for S in Standard_Entity_Type loop 531 declare 532 S_Name : constant String := Standard_Entity_Type'Image (S); 533 -- Name of entity (note we skip S_ at the start) 534 535 Ident_Node : Node_Id; 536 -- Defining identifier node 537 538 begin 539 Ident_Node := New_Standard_Entity; 540 Make_Name (Ident_Node, S_Name (3 .. S_Name'Length)); 541 Standard_Entity (S) := Ident_Node; 542 end; 543 end loop; 544 545 -- Create package declaration node for package Standard 546 547 Standard_Package_Node := New_Node (N_Package_Declaration, Stloc); 548 549 Pspec := New_Node (N_Package_Specification, Stloc); 550 Set_Specification (Standard_Package_Node, Pspec); 551 552 Set_Defining_Unit_Name (Pspec, Standard_Standard); 553 Set_Visible_Declarations (Pspec, Decl_S); 554 555 Set_Ekind (Standard_Standard, E_Package); 556 Set_Is_Pure (Standard_Standard); 557 Set_Is_Compilation_Unit (Standard_Standard); 558 559 -- Create type/subtype declaration nodes for standard types 560 561 for S in S_Types loop 562 563 -- Subtype declaration case 564 565 if S = S_Natural or else S = S_Positive then 566 Decl := New_Node (N_Subtype_Declaration, Stloc); 567 Set_Subtype_Indication (Decl, 568 New_Occurrence_Of (Standard_Integer, Stloc)); 569 570 -- Full type declaration case 571 572 else 573 Decl := New_Node (N_Full_Type_Declaration, Stloc); 574 end if; 575 576 Set_Is_Frozen (Standard_Entity (S)); 577 Set_Is_Public (Standard_Entity (S)); 578 Set_Defining_Identifier (Decl, Standard_Entity (S)); 579 Append (Decl, Decl_S); 580 end loop; 581 582 Create_Back_End_Float_Types; 583 584 -- Create type definition node for type Boolean. The Size is set to 585 -- 1 as required by Ada 95 and current ARG interpretations for Ada/83. 586 587 -- Note: Object_Size of Boolean is 8. This means that we do NOT in 588 -- general know that Boolean variables have valid values, so we do 589 -- not set the Is_Known_Valid flag. 590 591 Tdef_Node := New_Node (N_Enumeration_Type_Definition, Stloc); 592 Set_Literals (Tdef_Node, New_List); 593 Append (Standard_False, Literals (Tdef_Node)); 594 Append (Standard_True, Literals (Tdef_Node)); 595 Set_Type_Definition (Parent (Standard_Boolean), Tdef_Node); 596 597 Set_Ekind (Standard_Boolean, E_Enumeration_Type); 598 Set_First_Literal (Standard_Boolean, Standard_False); 599 Set_Etype (Standard_Boolean, Standard_Boolean); 600 Init_Esize (Standard_Boolean, Standard_Character_Size); 601 Init_RM_Size (Standard_Boolean, 1); 602 Set_Elem_Alignment (Standard_Boolean); 603 604 Set_Is_Unsigned_Type (Standard_Boolean); 605 Set_Size_Known_At_Compile_Time (Standard_Boolean); 606 Set_Has_Pragma_Ordered (Standard_Boolean); 607 608 Set_Ekind (Standard_True, E_Enumeration_Literal); 609 Set_Etype (Standard_True, Standard_Boolean); 610 Set_Enumeration_Pos (Standard_True, Uint_1); 611 Set_Enumeration_Rep (Standard_True, Uint_1); 612 Set_Is_Known_Valid (Standard_True, True); 613 614 Set_Ekind (Standard_False, E_Enumeration_Literal); 615 Set_Etype (Standard_False, Standard_Boolean); 616 Set_Enumeration_Pos (Standard_False, Uint_0); 617 Set_Enumeration_Rep (Standard_False, Uint_0); 618 Set_Is_Known_Valid (Standard_False, True); 619 620 -- For the bounds of Boolean, we create a range node corresponding to 621 622 -- range False .. True 623 624 -- where the occurrences of the literals must point to the 625 -- corresponding definition. 626 627 R_Node := New_Node (N_Range, Stloc); 628 B_Node := New_Node (N_Identifier, Stloc); 629 Set_Chars (B_Node, Chars (Standard_False)); 630 Set_Entity (B_Node, Standard_False); 631 Set_Etype (B_Node, Standard_Boolean); 632 Set_Is_Static_Expression (B_Node); 633 Set_Low_Bound (R_Node, B_Node); 634 635 B_Node := New_Node (N_Identifier, Stloc); 636 Set_Chars (B_Node, Chars (Standard_True)); 637 Set_Entity (B_Node, Standard_True); 638 Set_Etype (B_Node, Standard_Boolean); 639 Set_Is_Static_Expression (B_Node); 640 Set_High_Bound (R_Node, B_Node); 641 642 Set_Scalar_Range (Standard_Boolean, R_Node); 643 Set_Etype (R_Node, Standard_Boolean); 644 Set_Parent (R_Node, Standard_Boolean); 645 646 -- Record entity identifiers for boolean literals in the 647 -- Boolean_Literals array, for easy reference during expansion. 648 649 Boolean_Literals := (False => Standard_False, True => Standard_True); 650 651 -- Create type definition nodes for predefined integer types 652 653 Build_Signed_Integer_Type 654 (Standard_Short_Short_Integer, Standard_Short_Short_Integer_Size); 655 656 Build_Signed_Integer_Type 657 (Standard_Short_Integer, Standard_Short_Integer_Size); 658 659 Build_Signed_Integer_Type 660 (Standard_Integer, Standard_Integer_Size); 661 662 declare 663 LIS : Nat; 664 begin 665 if Debug_Flag_M then 666 LIS := 64; 667 else 668 LIS := Standard_Long_Integer_Size; 669 end if; 670 671 Build_Signed_Integer_Type (Standard_Long_Integer, LIS); 672 end; 673 674 Build_Signed_Integer_Type 675 (Standard_Long_Long_Integer, Standard_Long_Long_Integer_Size); 676 Set_Is_Implementation_Defined (Standard_Long_Long_Integer); 677 678 Create_Unconstrained_Base_Type 679 (Standard_Short_Short_Integer, E_Signed_Integer_Subtype); 680 Set_Is_Implementation_Defined (Standard_Short_Short_Integer); 681 682 Create_Unconstrained_Base_Type 683 (Standard_Short_Integer, E_Signed_Integer_Subtype); 684 685 Create_Unconstrained_Base_Type 686 (Standard_Integer, E_Signed_Integer_Subtype); 687 688 Create_Unconstrained_Base_Type 689 (Standard_Long_Integer, E_Signed_Integer_Subtype); 690 691 Create_Unconstrained_Base_Type 692 (Standard_Long_Long_Integer, E_Signed_Integer_Subtype); 693 Set_Is_Implementation_Defined (Standard_Short_Short_Integer); 694 695 Create_Float_Types; 696 697 -- Create type definition node for type Character. Note that we do not 698 -- set the Literals field, since type Character is handled with special 699 -- routine that do not need a literal list. 700 701 Tdef_Node := New_Node (N_Enumeration_Type_Definition, Stloc); 702 Set_Type_Definition (Parent (Standard_Character), Tdef_Node); 703 704 Set_Ekind (Standard_Character, E_Enumeration_Type); 705 Set_Etype (Standard_Character, Standard_Character); 706 Init_Esize (Standard_Character, Standard_Character_Size); 707 Init_RM_Size (Standard_Character, 8); 708 Set_Elem_Alignment (Standard_Character); 709 710 Set_Has_Pragma_Ordered (Standard_Character); 711 Set_Is_Unsigned_Type (Standard_Character); 712 Set_Is_Character_Type (Standard_Character); 713 Set_Is_Known_Valid (Standard_Character); 714 Set_Size_Known_At_Compile_Time (Standard_Character); 715 716 -- Create the bounds for type Character 717 718 R_Node := New_Node (N_Range, Stloc); 719 720 -- Low bound for type Character (Standard.Nul) 721 722 B_Node := New_Node (N_Character_Literal, Stloc); 723 Set_Is_Static_Expression (B_Node); 724 Set_Chars (B_Node, No_Name); 725 Set_Char_Literal_Value (B_Node, Uint_0); 726 Set_Entity (B_Node, Empty); 727 Set_Etype (B_Node, Standard_Character); 728 Set_Low_Bound (R_Node, B_Node); 729 730 -- High bound for type Character 731 732 B_Node := New_Node (N_Character_Literal, Stloc); 733 Set_Is_Static_Expression (B_Node); 734 Set_Chars (B_Node, No_Name); 735 Set_Char_Literal_Value (B_Node, UI_From_Int (16#FF#)); 736 Set_Entity (B_Node, Empty); 737 Set_Etype (B_Node, Standard_Character); 738 Set_High_Bound (R_Node, B_Node); 739 740 Set_Scalar_Range (Standard_Character, R_Node); 741 Set_Etype (R_Node, Standard_Character); 742 Set_Parent (R_Node, Standard_Character); 743 744 -- Create type definition for type Wide_Character. Note that we do not 745 -- set the Literals field, since type Wide_Character is handled with 746 -- special routines that do not need a literal list. 747 748 Tdef_Node := New_Node (N_Enumeration_Type_Definition, Stloc); 749 Set_Type_Definition (Parent (Standard_Wide_Character), Tdef_Node); 750 751 Set_Ekind (Standard_Wide_Character, E_Enumeration_Type); 752 Set_Etype (Standard_Wide_Character, Standard_Wide_Character); 753 Init_Size (Standard_Wide_Character, Standard_Wide_Character_Size); 754 755 Set_Elem_Alignment (Standard_Wide_Character); 756 Set_Has_Pragma_Ordered (Standard_Wide_Character); 757 Set_Is_Unsigned_Type (Standard_Wide_Character); 758 Set_Is_Character_Type (Standard_Wide_Character); 759 Set_Is_Known_Valid (Standard_Wide_Character); 760 Set_Size_Known_At_Compile_Time (Standard_Wide_Character); 761 762 -- Create the bounds for type Wide_Character 763 764 R_Node := New_Node (N_Range, Stloc); 765 766 -- Low bound for type Wide_Character 767 768 B_Node := New_Node (N_Character_Literal, Stloc); 769 Set_Is_Static_Expression (B_Node); 770 Set_Chars (B_Node, No_Name); -- ??? 771 Set_Char_Literal_Value (B_Node, Uint_0); 772 Set_Entity (B_Node, Empty); 773 Set_Etype (B_Node, Standard_Wide_Character); 774 Set_Low_Bound (R_Node, B_Node); 775 776 -- High bound for type Wide_Character 777 778 B_Node := New_Node (N_Character_Literal, Stloc); 779 Set_Is_Static_Expression (B_Node); 780 Set_Chars (B_Node, No_Name); -- ??? 781 Set_Char_Literal_Value (B_Node, UI_From_Int (16#FFFF#)); 782 Set_Entity (B_Node, Empty); 783 Set_Etype (B_Node, Standard_Wide_Character); 784 Set_High_Bound (R_Node, B_Node); 785 786 Set_Scalar_Range (Standard_Wide_Character, R_Node); 787 Set_Etype (R_Node, Standard_Wide_Character); 788 Set_Parent (R_Node, Standard_Wide_Character); 789 790 -- Create type definition for type Wide_Wide_Character. Note that we 791 -- do not set the Literals field, since type Wide_Wide_Character is 792 -- handled with special routines that do not need a literal list. 793 794 Tdef_Node := New_Node (N_Enumeration_Type_Definition, Stloc); 795 Set_Type_Definition (Parent (Standard_Wide_Wide_Character), Tdef_Node); 796 797 Set_Ekind (Standard_Wide_Wide_Character, E_Enumeration_Type); 798 Set_Etype (Standard_Wide_Wide_Character, 799 Standard_Wide_Wide_Character); 800 Init_Size (Standard_Wide_Wide_Character, 801 Standard_Wide_Wide_Character_Size); 802 803 Set_Elem_Alignment (Standard_Wide_Wide_Character); 804 Set_Has_Pragma_Ordered (Standard_Wide_Wide_Character); 805 Set_Is_Unsigned_Type (Standard_Wide_Wide_Character); 806 Set_Is_Character_Type (Standard_Wide_Wide_Character); 807 Set_Is_Known_Valid (Standard_Wide_Wide_Character); 808 Set_Size_Known_At_Compile_Time (Standard_Wide_Wide_Character); 809 Set_Is_Ada_2005_Only (Standard_Wide_Wide_Character); 810 811 -- Create the bounds for type Wide_Wide_Character 812 813 R_Node := New_Node (N_Range, Stloc); 814 815 -- Low bound for type Wide_Wide_Character 816 817 B_Node := New_Node (N_Character_Literal, Stloc); 818 Set_Is_Static_Expression (B_Node); 819 Set_Chars (B_Node, No_Name); -- ??? 820 Set_Char_Literal_Value (B_Node, Uint_0); 821 Set_Entity (B_Node, Empty); 822 Set_Etype (B_Node, Standard_Wide_Wide_Character); 823 Set_Low_Bound (R_Node, B_Node); 824 825 -- High bound for type Wide_Wide_Character 826 827 B_Node := New_Node (N_Character_Literal, Stloc); 828 Set_Is_Static_Expression (B_Node); 829 Set_Chars (B_Node, No_Name); -- ??? 830 Set_Char_Literal_Value (B_Node, UI_From_Int (16#7FFF_FFFF#)); 831 Set_Entity (B_Node, Empty); 832 Set_Etype (B_Node, Standard_Wide_Wide_Character); 833 Set_High_Bound (R_Node, B_Node); 834 835 Set_Scalar_Range (Standard_Wide_Wide_Character, R_Node); 836 Set_Etype (R_Node, Standard_Wide_Wide_Character); 837 Set_Parent (R_Node, Standard_Wide_Wide_Character); 838 839 -- Create type definition node for type String 840 841 Tdef_Node := New_Node (N_Unconstrained_Array_Definition, Stloc); 842 843 declare 844 CompDef_Node : Node_Id; 845 begin 846 CompDef_Node := New_Node (N_Component_Definition, Stloc); 847 Set_Aliased_Present (CompDef_Node, False); 848 Set_Access_Definition (CompDef_Node, Empty); 849 Set_Subtype_Indication (CompDef_Node, Identifier_For (S_Character)); 850 Set_Component_Definition (Tdef_Node, CompDef_Node); 851 end; 852 853 Set_Subtype_Marks (Tdef_Node, New_List); 854 Append (Identifier_For (S_Positive), Subtype_Marks (Tdef_Node)); 855 Set_Type_Definition (Parent (Standard_String), Tdef_Node); 856 857 Set_Ekind (Standard_String, E_String_Type); 858 Set_Etype (Standard_String, Standard_String); 859 Set_Component_Type (Standard_String, Standard_Character); 860 Set_Component_Size (Standard_String, Uint_8); 861 Init_Size_Align (Standard_String); 862 Set_Alignment (Standard_String, Uint_1); 863 Pack_String_Type (Standard_String); 864 865 -- On targets where a storage unit is larger than a byte (such as AAMP), 866 -- pragma Pack has a real effect on the representation of type String, 867 -- and the type must be marked as having a nonstandard representation. 868 869 if System_Storage_Unit > Uint_8 then 870 Set_Has_Non_Standard_Rep (Standard_String); 871 Set_Has_Pragma_Pack (Standard_String); 872 end if; 873 874 -- Set index type of String 875 876 E_Id := First 877 (Subtype_Marks (Type_Definition (Parent (Standard_String)))); 878 Set_First_Index (Standard_String, E_Id); 879 Set_Entity (E_Id, Standard_Positive); 880 Set_Etype (E_Id, Standard_Positive); 881 882 -- Create type definition node for type Wide_String 883 884 Tdef_Node := New_Node (N_Unconstrained_Array_Definition, Stloc); 885 886 declare 887 CompDef_Node : Node_Id; 888 begin 889 CompDef_Node := New_Node (N_Component_Definition, Stloc); 890 Set_Aliased_Present (CompDef_Node, False); 891 Set_Access_Definition (CompDef_Node, Empty); 892 Set_Subtype_Indication (CompDef_Node, 893 Identifier_For (S_Wide_Character)); 894 Set_Component_Definition (Tdef_Node, CompDef_Node); 895 end; 896 897 Set_Subtype_Marks (Tdef_Node, New_List); 898 Append (Identifier_For (S_Positive), Subtype_Marks (Tdef_Node)); 899 Set_Type_Definition (Parent (Standard_Wide_String), Tdef_Node); 900 901 Set_Ekind (Standard_Wide_String, E_String_Type); 902 Set_Etype (Standard_Wide_String, Standard_Wide_String); 903 Set_Component_Type (Standard_Wide_String, Standard_Wide_Character); 904 Set_Component_Size (Standard_Wide_String, Uint_16); 905 Init_Size_Align (Standard_Wide_String); 906 Pack_String_Type (Standard_Wide_String); 907 908 -- Set index type of Wide_String 909 910 E_Id := First 911 (Subtype_Marks (Type_Definition (Parent (Standard_Wide_String)))); 912 Set_First_Index (Standard_Wide_String, E_Id); 913 Set_Entity (E_Id, Standard_Positive); 914 Set_Etype (E_Id, Standard_Positive); 915 916 -- Create type definition node for type Wide_Wide_String 917 918 Tdef_Node := New_Node (N_Unconstrained_Array_Definition, Stloc); 919 920 declare 921 CompDef_Node : Node_Id; 922 begin 923 CompDef_Node := New_Node (N_Component_Definition, Stloc); 924 Set_Aliased_Present (CompDef_Node, False); 925 Set_Access_Definition (CompDef_Node, Empty); 926 Set_Subtype_Indication (CompDef_Node, 927 Identifier_For (S_Wide_Wide_Character)); 928 Set_Component_Definition (Tdef_Node, CompDef_Node); 929 end; 930 931 Set_Subtype_Marks (Tdef_Node, New_List); 932 Append (Identifier_For (S_Positive), Subtype_Marks (Tdef_Node)); 933 Set_Type_Definition (Parent (Standard_Wide_Wide_String), Tdef_Node); 934 935 Set_Ekind (Standard_Wide_Wide_String, E_String_Type); 936 Set_Etype (Standard_Wide_Wide_String, 937 Standard_Wide_Wide_String); 938 Set_Component_Type (Standard_Wide_Wide_String, 939 Standard_Wide_Wide_Character); 940 Set_Component_Size (Standard_Wide_Wide_String, Uint_32); 941 Init_Size_Align (Standard_Wide_Wide_String); 942 Set_Is_Ada_2005_Only (Standard_Wide_Wide_String); 943 Pack_String_Type (Standard_Wide_Wide_String); 944 945 -- Set index type of Wide_Wide_String 946 947 E_Id := First 948 (Subtype_Marks (Type_Definition (Parent (Standard_Wide_Wide_String)))); 949 Set_First_Index (Standard_Wide_Wide_String, E_Id); 950 Set_Entity (E_Id, Standard_Positive); 951 Set_Etype (E_Id, Standard_Positive); 952 953 -- Setup entity for Natural 954 955 Set_Ekind (Standard_Natural, E_Signed_Integer_Subtype); 956 Set_Etype (Standard_Natural, Base_Type (Standard_Integer)); 957 Init_Esize (Standard_Natural, Standard_Integer_Size); 958 Init_RM_Size (Standard_Natural, Standard_Integer_Size - 1); 959 Set_Elem_Alignment (Standard_Natural); 960 Set_Size_Known_At_Compile_Time 961 (Standard_Natural); 962 Set_Integer_Bounds (Standard_Natural, 963 Typ => Base_Type (Standard_Integer), 964 Lb => Uint_0, 965 Hb => Intval (High_Bound (Scalar_Range (Standard_Integer)))); 966 Set_Is_Constrained (Standard_Natural); 967 968 -- Setup entity for Positive 969 970 Set_Ekind (Standard_Positive, E_Signed_Integer_Subtype); 971 Set_Etype (Standard_Positive, Base_Type (Standard_Integer)); 972 Init_Esize (Standard_Positive, Standard_Integer_Size); 973 Init_RM_Size (Standard_Positive, Standard_Integer_Size - 1); 974 Set_Elem_Alignment (Standard_Positive); 975 976 Set_Size_Known_At_Compile_Time (Standard_Positive); 977 978 Set_Integer_Bounds (Standard_Positive, 979 Typ => Base_Type (Standard_Integer), 980 Lb => Uint_1, 981 Hb => Intval (High_Bound (Scalar_Range (Standard_Integer)))); 982 Set_Is_Constrained (Standard_Positive); 983 984 -- Create declaration for package ASCII 985 986 Decl := New_Node (N_Package_Declaration, Stloc); 987 Append (Decl, Decl_S); 988 989 Pspec := New_Node (N_Package_Specification, Stloc); 990 Set_Specification (Decl, Pspec); 991 992 Set_Defining_Unit_Name (Pspec, Standard_Entity (S_ASCII)); 993 Set_Ekind (Standard_Entity (S_ASCII), E_Package); 994 Set_Visible_Declarations (Pspec, Decl_A); 995 996 -- Create control character definitions in package ASCII. Note that 997 -- the character literal entries created here correspond to literal 998 -- values that are impossible in the source, but can be represented 999 -- internally with no difficulties. 1000 1001 Ccode := 16#00#; 1002 1003 for S in S_ASCII_Names loop 1004 Decl := New_Node (N_Object_Declaration, Staloc); 1005 Set_Constant_Present (Decl, True); 1006 1007 declare 1008 A_Char : constant Entity_Id := Standard_Entity (S); 1009 Expr_Decl : Node_Id; 1010 1011 begin 1012 Set_Sloc (A_Char, Staloc); 1013 Set_Ekind (A_Char, E_Constant); 1014 Set_Never_Set_In_Source (A_Char, True); 1015 Set_Is_True_Constant (A_Char, True); 1016 Set_Etype (A_Char, Standard_Character); 1017 Set_Scope (A_Char, Standard_Entity (S_ASCII)); 1018 Set_Is_Immediately_Visible (A_Char, False); 1019 Set_Is_Public (A_Char, True); 1020 Set_Is_Known_Valid (A_Char, True); 1021 1022 Append_Entity (A_Char, Standard_Entity (S_ASCII)); 1023 Set_Defining_Identifier (Decl, A_Char); 1024 1025 Set_Object_Definition (Decl, Identifier_For (S_Character)); 1026 Expr_Decl := New_Node (N_Character_Literal, Staloc); 1027 Set_Expression (Decl, Expr_Decl); 1028 1029 Set_Is_Static_Expression (Expr_Decl); 1030 Set_Chars (Expr_Decl, No_Name); 1031 Set_Etype (Expr_Decl, Standard_Character); 1032 Set_Char_Literal_Value (Expr_Decl, UI_From_Int (Int (Ccode))); 1033 end; 1034 1035 Append (Decl, Decl_A); 1036 1037 -- Increment character code, dealing with non-contiguities 1038 1039 Ccode := Ccode + 1; 1040 1041 if Ccode = 16#20# then 1042 Ccode := 16#21#; 1043 elsif Ccode = 16#27# then 1044 Ccode := 16#3A#; 1045 elsif Ccode = 16#3C# then 1046 Ccode := 16#3F#; 1047 elsif Ccode = 16#41# then 1048 Ccode := 16#5B#; 1049 end if; 1050 end loop; 1051 1052 -- Create semantic phase entities 1053 1054 Standard_Void_Type := New_Standard_Entity; 1055 Set_Ekind (Standard_Void_Type, E_Void); 1056 Set_Etype (Standard_Void_Type, Standard_Void_Type); 1057 Set_Scope (Standard_Void_Type, Standard_Standard); 1058 Make_Name (Standard_Void_Type, "_void_type"); 1059 1060 -- The type field of packages is set to void 1061 1062 Set_Etype (Standard_Standard, Standard_Void_Type); 1063 Set_Etype (Standard_ASCII, Standard_Void_Type); 1064 1065 -- Standard_A_String is actually used in generated code, so it has a 1066 -- type name that is reasonable, but does not overlap any Ada name. 1067 1068 Standard_A_String := New_Standard_Entity; 1069 Set_Ekind (Standard_A_String, E_Access_Type); 1070 Set_Scope (Standard_A_String, Standard_Standard); 1071 Set_Etype (Standard_A_String, Standard_A_String); 1072 1073 if Debug_Flag_6 then 1074 Init_Size (Standard_A_String, System_Address_Size); 1075 else 1076 Init_Size (Standard_A_String, System_Address_Size * 2); 1077 end if; 1078 1079 Init_Alignment (Standard_A_String); 1080 1081 Set_Directly_Designated_Type 1082 (Standard_A_String, Standard_String); 1083 Make_Name (Standard_A_String, "access_string"); 1084 1085 Standard_A_Char := New_Standard_Entity; 1086 Set_Ekind (Standard_A_Char, E_Access_Type); 1087 Set_Scope (Standard_A_Char, Standard_Standard); 1088 Set_Etype (Standard_A_Char, Standard_A_String); 1089 Init_Size (Standard_A_Char, System_Address_Size); 1090 Set_Elem_Alignment (Standard_A_Char); 1091 1092 Set_Directly_Designated_Type (Standard_A_Char, Standard_Character); 1093 Make_Name (Standard_A_Char, "access_character"); 1094 1095 -- Standard_Debug_Renaming_Type is used for the special objects created 1096 -- to encode the names occurring in renaming declarations for use by the 1097 -- debugger (see exp_dbug.adb). The type is a zero-sized subtype of 1098 -- Standard.Integer. 1099 1100 Standard_Debug_Renaming_Type := New_Standard_Entity; 1101 1102 Set_Ekind (Standard_Debug_Renaming_Type, E_Signed_Integer_Subtype); 1103 Set_Scope (Standard_Debug_Renaming_Type, Standard_Standard); 1104 Set_Etype (Standard_Debug_Renaming_Type, Base_Type (Standard_Integer)); 1105 Init_Esize (Standard_Debug_Renaming_Type, 0); 1106 Init_RM_Size (Standard_Debug_Renaming_Type, 0); 1107 Set_Size_Known_At_Compile_Time (Standard_Debug_Renaming_Type); 1108 Set_Integer_Bounds (Standard_Debug_Renaming_Type, 1109 Typ => Base_Type (Standard_Debug_Renaming_Type), 1110 Lb => Uint_1, 1111 Hb => Uint_0); 1112 Set_Is_Constrained (Standard_Debug_Renaming_Type); 1113 Set_Has_Size_Clause (Standard_Debug_Renaming_Type); 1114 1115 Make_Name (Standard_Debug_Renaming_Type, "_renaming_type"); 1116 1117 -- Note on type names. The type names for the following special types 1118 -- are constructed so that they will look reasonable should they ever 1119 -- appear in error messages etc, although in practice the use of the 1120 -- special insertion character } for types results in special handling 1121 -- of these type names in any case. The blanks in these names would 1122 -- trouble in Gigi, but that's OK here, since none of these types 1123 -- should ever get through to Gigi! Attributes of these types are 1124 -- filled out to minimize problems with cascaded errors (for example, 1125 -- Any_Integer is given reasonable and consistent type and size values) 1126 1127 Any_Type := New_Standard_Entity; 1128 Decl := New_Node (N_Full_Type_Declaration, Stloc); 1129 Set_Defining_Identifier (Decl, Any_Type); 1130 Set_Scope (Any_Type, Standard_Standard); 1131 Build_Signed_Integer_Type (Any_Type, Standard_Integer_Size); 1132 Make_Name (Any_Type, "any type"); 1133 1134 Any_Id := New_Standard_Entity; 1135 Set_Ekind (Any_Id, E_Variable); 1136 Set_Scope (Any_Id, Standard_Standard); 1137 Set_Etype (Any_Id, Any_Type); 1138 Init_Esize (Any_Id); 1139 Init_Alignment (Any_Id); 1140 Make_Name (Any_Id, "any id"); 1141 1142 Any_Access := New_Standard_Entity; 1143 Set_Ekind (Any_Access, E_Access_Type); 1144 Set_Scope (Any_Access, Standard_Standard); 1145 Set_Etype (Any_Access, Any_Access); 1146 Init_Size (Any_Access, System_Address_Size); 1147 Set_Elem_Alignment (Any_Access); 1148 Make_Name (Any_Access, "an access type"); 1149 1150 Any_Character := New_Standard_Entity; 1151 Set_Ekind (Any_Character, E_Enumeration_Type); 1152 Set_Scope (Any_Character, Standard_Standard); 1153 Set_Etype (Any_Character, Any_Character); 1154 Set_Is_Unsigned_Type (Any_Character); 1155 Set_Is_Character_Type (Any_Character); 1156 Init_Esize (Any_Character, Standard_Character_Size); 1157 Init_RM_Size (Any_Character, 8); 1158 Set_Elem_Alignment (Any_Character); 1159 Set_Scalar_Range (Any_Character, Scalar_Range (Standard_Character)); 1160 Make_Name (Any_Character, "a character type"); 1161 1162 Any_Array := New_Standard_Entity; 1163 Set_Ekind (Any_Array, E_String_Type); 1164 Set_Scope (Any_Array, Standard_Standard); 1165 Set_Etype (Any_Array, Any_Array); 1166 Set_Component_Type (Any_Array, Any_Character); 1167 Init_Size_Align (Any_Array); 1168 Make_Name (Any_Array, "an array type"); 1169 1170 Any_Boolean := New_Standard_Entity; 1171 Set_Ekind (Any_Boolean, E_Enumeration_Type); 1172 Set_Scope (Any_Boolean, Standard_Standard); 1173 Set_Etype (Any_Boolean, Standard_Boolean); 1174 Init_Esize (Any_Boolean, Standard_Character_Size); 1175 Init_RM_Size (Any_Boolean, 1); 1176 Set_Elem_Alignment (Any_Boolean); 1177 Set_Is_Unsigned_Type (Any_Boolean); 1178 Set_Scalar_Range (Any_Boolean, Scalar_Range (Standard_Boolean)); 1179 Make_Name (Any_Boolean, "a boolean type"); 1180 1181 Any_Composite := New_Standard_Entity; 1182 Set_Ekind (Any_Composite, E_Array_Type); 1183 Set_Scope (Any_Composite, Standard_Standard); 1184 Set_Etype (Any_Composite, Any_Composite); 1185 Set_Component_Size (Any_Composite, Uint_0); 1186 Set_Component_Type (Any_Composite, Standard_Integer); 1187 Init_Size_Align (Any_Composite); 1188 Make_Name (Any_Composite, "a composite type"); 1189 1190 Any_Discrete := New_Standard_Entity; 1191 Set_Ekind (Any_Discrete, E_Signed_Integer_Type); 1192 Set_Scope (Any_Discrete, Standard_Standard); 1193 Set_Etype (Any_Discrete, Any_Discrete); 1194 Init_Size (Any_Discrete, Standard_Integer_Size); 1195 Set_Elem_Alignment (Any_Discrete); 1196 Make_Name (Any_Discrete, "a discrete type"); 1197 1198 Any_Fixed := New_Standard_Entity; 1199 Set_Ekind (Any_Fixed, E_Ordinary_Fixed_Point_Type); 1200 Set_Scope (Any_Fixed, Standard_Standard); 1201 Set_Etype (Any_Fixed, Any_Fixed); 1202 Init_Size (Any_Fixed, Standard_Integer_Size); 1203 Set_Elem_Alignment (Any_Fixed); 1204 Make_Name (Any_Fixed, "a fixed-point type"); 1205 1206 Any_Integer := New_Standard_Entity; 1207 Set_Ekind (Any_Integer, E_Signed_Integer_Type); 1208 Set_Scope (Any_Integer, Standard_Standard); 1209 Set_Etype (Any_Integer, Standard_Long_Long_Integer); 1210 Init_Size (Any_Integer, Standard_Long_Long_Integer_Size); 1211 Set_Elem_Alignment (Any_Integer); 1212 1213 Set_Integer_Bounds 1214 (Any_Integer, 1215 Typ => Base_Type (Standard_Integer), 1216 Lb => Uint_0, 1217 Hb => Intval (High_Bound (Scalar_Range (Standard_Integer)))); 1218 Make_Name (Any_Integer, "an integer type"); 1219 1220 Any_Modular := New_Standard_Entity; 1221 Set_Ekind (Any_Modular, E_Modular_Integer_Type); 1222 Set_Scope (Any_Modular, Standard_Standard); 1223 Set_Etype (Any_Modular, Standard_Long_Long_Integer); 1224 Init_Size (Any_Modular, Standard_Long_Long_Integer_Size); 1225 Set_Elem_Alignment (Any_Modular); 1226 Set_Is_Unsigned_Type (Any_Modular); 1227 Make_Name (Any_Modular, "a modular type"); 1228 1229 Any_Numeric := New_Standard_Entity; 1230 Set_Ekind (Any_Numeric, E_Signed_Integer_Type); 1231 Set_Scope (Any_Numeric, Standard_Standard); 1232 Set_Etype (Any_Numeric, Standard_Long_Long_Integer); 1233 Init_Size (Any_Numeric, Standard_Long_Long_Integer_Size); 1234 Set_Elem_Alignment (Any_Numeric); 1235 Make_Name (Any_Numeric, "a numeric type"); 1236 1237 Any_Real := New_Standard_Entity; 1238 Set_Ekind (Any_Real, E_Floating_Point_Type); 1239 Set_Scope (Any_Real, Standard_Standard); 1240 Set_Etype (Any_Real, Standard_Long_Long_Float); 1241 Init_Size (Any_Real, 1242 UI_To_Int (Esize (Standard_Long_Long_Float))); 1243 Set_Elem_Alignment (Any_Real); 1244 Make_Name (Any_Real, "a real type"); 1245 1246 Any_Scalar := New_Standard_Entity; 1247 Set_Ekind (Any_Scalar, E_Signed_Integer_Type); 1248 Set_Scope (Any_Scalar, Standard_Standard); 1249 Set_Etype (Any_Scalar, Any_Scalar); 1250 Init_Size (Any_Scalar, Standard_Integer_Size); 1251 Set_Elem_Alignment (Any_Scalar); 1252 Make_Name (Any_Scalar, "a scalar type"); 1253 1254 Any_String := New_Standard_Entity; 1255 Set_Ekind (Any_String, E_String_Type); 1256 Set_Scope (Any_String, Standard_Standard); 1257 Set_Etype (Any_String, Any_String); 1258 Set_Component_Type (Any_String, Any_Character); 1259 Init_Size_Align (Any_String); 1260 Make_Name (Any_String, "a string type"); 1261 1262 declare 1263 Index : Node_Id; 1264 1265 begin 1266 Index := 1267 Make_Range (Stloc, 1268 Low_Bound => Make_Integer (Uint_0), 1269 High_Bound => Make_Integer (Uint_2 ** Standard_Integer_Size)); 1270 Set_Etype (Index, Standard_Integer); 1271 Set_First_Index (Any_String, Index); 1272 end; 1273 1274 Standard_Integer_8 := New_Standard_Entity; 1275 Decl := New_Node (N_Full_Type_Declaration, Stloc); 1276 Set_Defining_Identifier (Decl, Standard_Integer_8); 1277 Make_Name (Standard_Integer_8, "integer_8"); 1278 Set_Scope (Standard_Integer_8, Standard_Standard); 1279 Build_Signed_Integer_Type (Standard_Integer_8, 8); 1280 1281 Standard_Integer_16 := New_Standard_Entity; 1282 Decl := New_Node (N_Full_Type_Declaration, Stloc); 1283 Set_Defining_Identifier (Decl, Standard_Integer_16); 1284 Make_Name (Standard_Integer_16, "integer_16"); 1285 Set_Scope (Standard_Integer_16, Standard_Standard); 1286 Build_Signed_Integer_Type (Standard_Integer_16, 16); 1287 1288 Standard_Integer_32 := New_Standard_Entity; 1289 Decl := New_Node (N_Full_Type_Declaration, Stloc); 1290 Set_Defining_Identifier (Decl, Standard_Integer_32); 1291 Make_Name (Standard_Integer_32, "integer_32"); 1292 Set_Scope (Standard_Integer_32, Standard_Standard); 1293 Build_Signed_Integer_Type (Standard_Integer_32, 32); 1294 1295 Standard_Integer_64 := New_Standard_Entity; 1296 Decl := New_Node (N_Full_Type_Declaration, Stloc); 1297 Set_Defining_Identifier (Decl, Standard_Integer_64); 1298 Make_Name (Standard_Integer_64, "integer_64"); 1299 Set_Scope (Standard_Integer_64, Standard_Standard); 1300 Build_Signed_Integer_Type (Standard_Integer_64, 64); 1301 1302 Standard_Unsigned := New_Standard_Entity; 1303 Decl := New_Node (N_Full_Type_Declaration, Stloc); 1304 Set_Defining_Identifier (Decl, Standard_Unsigned); 1305 Make_Name (Standard_Unsigned, "unsigned"); 1306 1307 Set_Ekind (Standard_Unsigned, E_Modular_Integer_Type); 1308 Set_Scope (Standard_Unsigned, Standard_Standard); 1309 Set_Etype (Standard_Unsigned, Standard_Unsigned); 1310 Init_Size (Standard_Unsigned, Standard_Integer_Size); 1311 Set_Elem_Alignment (Standard_Unsigned); 1312 Set_Modulus (Standard_Unsigned, 1313 Uint_2 ** Standard_Integer_Size); 1314 Set_Is_Unsigned_Type (Standard_Unsigned); 1315 Set_Size_Known_At_Compile_Time 1316 (Standard_Unsigned); 1317 Set_Is_Known_Valid (Standard_Unsigned, True); 1318 1319 R_Node := New_Node (N_Range, Stloc); 1320 Set_Low_Bound (R_Node, Make_Integer (Uint_0)); 1321 Set_High_Bound (R_Node, Make_Integer (Modulus (Standard_Unsigned) - 1)); 1322 Set_Etype (Low_Bound (R_Node), Standard_Unsigned); 1323 Set_Etype (High_Bound (R_Node), Standard_Unsigned); 1324 Set_Scalar_Range (Standard_Unsigned, R_Node); 1325 1326 -- Note: universal integer and universal real are constructed as fully 1327 -- formed signed numeric types, with parameters corresponding to the 1328 -- longest runtime types (Long_Long_Integer and Long_Long_Float). This 1329 -- allows Gigi to properly process references to universal types that 1330 -- are not folded at compile time. 1331 1332 Universal_Integer := New_Standard_Entity; 1333 Decl := New_Node (N_Full_Type_Declaration, Stloc); 1334 Set_Defining_Identifier (Decl, Universal_Integer); 1335 Make_Name (Universal_Integer, "universal_integer"); 1336 Set_Scope (Universal_Integer, Standard_Standard); 1337 Build_Signed_Integer_Type 1338 (Universal_Integer, Standard_Long_Long_Integer_Size); 1339 1340 Universal_Real := New_Standard_Entity; 1341 Decl := New_Node (N_Full_Type_Declaration, Stloc); 1342 Set_Defining_Identifier (Decl, Universal_Real); 1343 Make_Name (Universal_Real, "universal_real"); 1344 Set_Scope (Universal_Real, Standard_Standard); 1345 Copy_Float_Type (Universal_Real, Standard_Long_Long_Float); 1346 1347 -- Note: universal fixed, unlike universal integer and universal real, 1348 -- is never used at runtime, so it does not need to have bounds set. 1349 1350 Universal_Fixed := New_Standard_Entity; 1351 Decl := New_Node (N_Full_Type_Declaration, Stloc); 1352 Set_Defining_Identifier (Decl, Universal_Fixed); 1353 Make_Name (Universal_Fixed, "universal_fixed"); 1354 Set_Ekind (Universal_Fixed, E_Ordinary_Fixed_Point_Type); 1355 Set_Etype (Universal_Fixed, Universal_Fixed); 1356 Set_Scope (Universal_Fixed, Standard_Standard); 1357 Init_Size (Universal_Fixed, Standard_Long_Long_Integer_Size); 1358 Set_Elem_Alignment (Universal_Fixed); 1359 Set_Size_Known_At_Compile_Time 1360 (Universal_Fixed); 1361 1362 -- Create type declaration for Duration, using a 64-bit size. The 1363 -- delta and size values depend on the mode set in system.ads. 1364 1365 Build_Duration : declare 1366 Dlo : Uint; 1367 Dhi : Uint; 1368 Delta_Val : Ureal; 1369 1370 begin 1371 -- In 32 bit mode, the size is 32 bits, and the delta and 1372 -- small values are set to 20 milliseconds (20.0*(10.0**(-3)). 1373 1374 if Duration_32_Bits_On_Target then 1375 Dlo := Intval (Type_Low_Bound (Standard_Integer_32)); 1376 Dhi := Intval (Type_High_Bound (Standard_Integer_32)); 1377 Delta_Val := UR_From_Components (UI_From_Int (20), Uint_3, 10); 1378 1379 -- In standard 64-bit mode, the size is 64-bits and the delta and 1380 -- small values are set to nanoseconds (1.0*(10.0**(-9)) 1381 1382 else 1383 Dlo := Intval (Type_Low_Bound (Standard_Integer_64)); 1384 Dhi := Intval (Type_High_Bound (Standard_Integer_64)); 1385 Delta_Val := UR_From_Components (Uint_1, Uint_9, 10); 1386 end if; 1387 1388 Tdef_Node := Make_Ordinary_Fixed_Point_Definition (Stloc, 1389 Delta_Expression => Make_Real_Literal (Stloc, Delta_Val), 1390 Real_Range_Specification => 1391 Make_Real_Range_Specification (Stloc, 1392 Low_Bound => Make_Real_Literal (Stloc, 1393 Realval => Dlo * Delta_Val), 1394 High_Bound => Make_Real_Literal (Stloc, 1395 Realval => Dhi * Delta_Val))); 1396 1397 Set_Type_Definition (Parent (Standard_Duration), Tdef_Node); 1398 1399 Set_Ekind (Standard_Duration, E_Ordinary_Fixed_Point_Type); 1400 Set_Etype (Standard_Duration, Standard_Duration); 1401 1402 if Duration_32_Bits_On_Target then 1403 Init_Size (Standard_Duration, 32); 1404 else 1405 Init_Size (Standard_Duration, 64); 1406 end if; 1407 1408 Set_Elem_Alignment (Standard_Duration); 1409 Set_Delta_Value (Standard_Duration, Delta_Val); 1410 Set_Small_Value (Standard_Duration, Delta_Val); 1411 Set_Scalar_Range (Standard_Duration, 1412 Real_Range_Specification 1413 (Type_Definition (Parent (Standard_Duration)))); 1414 1415 -- Normally it does not matter that nodes in package Standard are 1416 -- not marked as analyzed. The Scalar_Range of the fixed-point 1417 -- type Standard_Duration is an exception, because of the special 1418 -- test made in Freeze.Freeze_Fixed_Point_Type. 1419 1420 Set_Analyzed (Scalar_Range (Standard_Duration)); 1421 1422 Set_Etype (Type_High_Bound (Standard_Duration), Standard_Duration); 1423 Set_Etype (Type_Low_Bound (Standard_Duration), Standard_Duration); 1424 1425 Set_Is_Static_Expression (Type_High_Bound (Standard_Duration)); 1426 Set_Is_Static_Expression (Type_Low_Bound (Standard_Duration)); 1427 1428 Set_Corresponding_Integer_Value 1429 (Type_High_Bound (Standard_Duration), Dhi); 1430 1431 Set_Corresponding_Integer_Value 1432 (Type_Low_Bound (Standard_Duration), Dlo); 1433 1434 Set_Size_Known_At_Compile_Time (Standard_Duration); 1435 end Build_Duration; 1436 1437 -- Build standard exception type. Note that the type name here is 1438 -- actually used in the generated code, so it must be set correctly 1439 1440 -- ??? Also note that the Import_Code component is now declared 1441 -- as a System.Standard_Library.Exception_Code to enforce run-time 1442 -- library implementation consistency. It's too early here to resort 1443 -- to rtsfind to get the proper node for that type, so we use the 1444 -- closest possible available type node at hand instead. We should 1445 -- probably be fixing this up at some point. 1446 1447 Standard_Exception_Type := New_Standard_Entity; 1448 Set_Ekind (Standard_Exception_Type, E_Record_Type); 1449 Set_Etype (Standard_Exception_Type, Standard_Exception_Type); 1450 Set_Scope (Standard_Exception_Type, Standard_Standard); 1451 Set_Stored_Constraint 1452 (Standard_Exception_Type, No_Elist); 1453 Init_Size_Align (Standard_Exception_Type); 1454 Set_Size_Known_At_Compile_Time 1455 (Standard_Exception_Type, True); 1456 Make_Name (Standard_Exception_Type, "exception"); 1457 1458 Make_Component 1459 (Standard_Exception_Type, Standard_Boolean, "Not_Handled_By_Others"); 1460 Make_Component 1461 (Standard_Exception_Type, Standard_Character, "Lang"); 1462 Make_Component 1463 (Standard_Exception_Type, Standard_Natural, "Name_Length"); 1464 Make_Component 1465 (Standard_Exception_Type, Standard_A_Char, "Full_Name"); 1466 Make_Component 1467 (Standard_Exception_Type, Standard_A_Char, "HTable_Ptr"); 1468 Make_Component 1469 (Standard_Exception_Type, Standard_Unsigned, "Import_Code"); 1470 Make_Component 1471 (Standard_Exception_Type, Standard_A_Char, "Raise_Hook"); 1472 1473 -- Build tree for record declaration, for use by the back-end 1474 1475 declare 1476 Comp_List : List_Id; 1477 Comp : Entity_Id; 1478 1479 begin 1480 Comp := First_Entity (Standard_Exception_Type); 1481 Comp_List := New_List; 1482 while Present (Comp) loop 1483 Append ( 1484 Make_Component_Declaration (Stloc, 1485 Defining_Identifier => Comp, 1486 Component_Definition => 1487 Make_Component_Definition (Stloc, 1488 Aliased_Present => False, 1489 Subtype_Indication => New_Occurrence_Of (Etype (Comp), 1490 Stloc))), 1491 Comp_List); 1492 1493 Next_Entity (Comp); 1494 end loop; 1495 1496 Decl := Make_Full_Type_Declaration (Stloc, 1497 Defining_Identifier => Standard_Exception_Type, 1498 Type_Definition => 1499 Make_Record_Definition (Stloc, 1500 End_Label => Empty, 1501 Component_List => 1502 Make_Component_List (Stloc, 1503 Component_Items => Comp_List))); 1504 end; 1505 1506 Append (Decl, Decl_S); 1507 1508 Layout_Type (Standard_Exception_Type); 1509 1510 -- Create declarations of standard exceptions 1511 1512 Build_Exception (S_Constraint_Error); 1513 Build_Exception (S_Program_Error); 1514 Build_Exception (S_Storage_Error); 1515 Build_Exception (S_Tasking_Error); 1516 1517 -- Numeric_Error is a normal exception in Ada 83, but in Ada 95 1518 -- it is a renaming of Constraint_Error. Is this test too early??? 1519 1520 if Ada_Version = Ada_83 then 1521 Build_Exception (S_Numeric_Error); 1522 1523 else 1524 Decl := New_Node (N_Exception_Renaming_Declaration, Stloc); 1525 E_Id := Standard_Entity (S_Numeric_Error); 1526 1527 Set_Ekind (E_Id, E_Exception); 1528 Set_Exception_Code (E_Id, Uint_0); 1529 Set_Etype (E_Id, Standard_Exception_Type); 1530 Set_Is_Public (E_Id); 1531 Set_Renamed_Entity (E_Id, Standard_Entity (S_Constraint_Error)); 1532 1533 Set_Defining_Identifier (Decl, E_Id); 1534 Append (Decl, Decl_S); 1535 1536 Ident_Node := New_Node (N_Identifier, Stloc); 1537 Set_Chars (Ident_Node, Chars (Standard_Entity (S_Constraint_Error))); 1538 Set_Entity (Ident_Node, Standard_Entity (S_Constraint_Error)); 1539 Set_Name (Decl, Ident_Node); 1540 end if; 1541 1542 -- Abort_Signal is an entity that does not get made visible 1543 1544 Abort_Signal := New_Standard_Entity; 1545 Set_Chars (Abort_Signal, Name_uAbort_Signal); 1546 Set_Ekind (Abort_Signal, E_Exception); 1547 Set_Exception_Code (Abort_Signal, Uint_0); 1548 Set_Etype (Abort_Signal, Standard_Exception_Type); 1549 Set_Scope (Abort_Signal, Standard_Standard); 1550 Set_Is_Public (Abort_Signal, True); 1551 Decl := 1552 Make_Exception_Declaration (Stloc, 1553 Defining_Identifier => Abort_Signal); 1554 1555 -- Create defining identifiers for shift operator entities. Note 1556 -- that these entities are used only for marking shift operators 1557 -- generated internally, and hence need no structure, just a name 1558 -- and a unique identity. 1559 1560 Standard_Op_Rotate_Left := New_Standard_Entity; 1561 Set_Chars (Standard_Op_Rotate_Left, Name_Rotate_Left); 1562 Set_Ekind (Standard_Op_Rotate_Left, E_Operator); 1563 1564 Standard_Op_Rotate_Right := New_Standard_Entity; 1565 Set_Chars (Standard_Op_Rotate_Right, Name_Rotate_Right); 1566 Set_Ekind (Standard_Op_Rotate_Right, E_Operator); 1567 1568 Standard_Op_Shift_Left := New_Standard_Entity; 1569 Set_Chars (Standard_Op_Shift_Left, Name_Shift_Left); 1570 Set_Ekind (Standard_Op_Shift_Left, E_Operator); 1571 1572 Standard_Op_Shift_Right := New_Standard_Entity; 1573 Set_Chars (Standard_Op_Shift_Right, Name_Shift_Right); 1574 Set_Ekind (Standard_Op_Shift_Right, E_Operator); 1575 1576 Standard_Op_Shift_Right_Arithmetic := New_Standard_Entity; 1577 Set_Chars (Standard_Op_Shift_Right_Arithmetic, 1578 Name_Shift_Right_Arithmetic); 1579 Set_Ekind (Standard_Op_Shift_Right_Arithmetic, 1580 E_Operator); 1581 1582 -- Create standard operator declarations 1583 1584 Create_Operators; 1585 1586 -- Initialize visibility table with entities in Standard 1587 1588 for E in Standard_Entity_Type loop 1589 if Ekind (Standard_Entity (E)) /= E_Operator then 1590 Set_Name_Entity_Id 1591 (Chars (Standard_Entity (E)), Standard_Entity (E)); 1592 Set_Homonym (Standard_Entity (E), Empty); 1593 end if; 1594 1595 if E not in S_ASCII_Names then 1596 Set_Scope (Standard_Entity (E), Standard_Standard); 1597 Set_Is_Immediately_Visible (Standard_Entity (E)); 1598 end if; 1599 end loop; 1600 1601 -- The predefined package Standard itself does not have a scope; 1602 -- it is the only entity in the system not to have one, and this 1603 -- is what identifies the package to Gigi. 1604 1605 Set_Scope (Standard_Standard, Empty); 1606 1607 -- Set global variables indicating last Id values and version 1608 1609 Last_Standard_Node_Id := Last_Node_Id; 1610 Last_Standard_List_Id := Last_List_Id; 1611 1612 -- The Error node has an Etype of Any_Type to help error recovery 1613 1614 Set_Etype (Error, Any_Type); 1615 1616 -- Print representation of standard if switch set 1617 1618 if Opt.Print_Standard then 1619 Print_Standard; 1620 end if; 1621 end Create_Standard; 1622 1623 ------------------------------------ 1624 -- Create_Unconstrained_Base_Type -- 1625 ------------------------------------ 1626 1627 procedure Create_Unconstrained_Base_Type 1628 (E : Entity_Id; 1629 K : Entity_Kind) 1630 is 1631 New_Ent : constant Entity_Id := New_Copy (E); 1632 1633 begin 1634 Set_Ekind (E, K); 1635 Set_Is_Constrained (E, True); 1636 Set_Is_First_Subtype (E, True); 1637 Set_Etype (E, New_Ent); 1638 1639 Append_Entity (New_Ent, Standard_Standard); 1640 Set_Is_Constrained (New_Ent, False); 1641 Set_Etype (New_Ent, New_Ent); 1642 Set_Is_Known_Valid (New_Ent, True); 1643 1644 if K = E_Signed_Integer_Subtype then 1645 Set_Etype (Low_Bound (Scalar_Range (E)), New_Ent); 1646 Set_Etype (High_Bound (Scalar_Range (E)), New_Ent); 1647 end if; 1648 1649 end Create_Unconstrained_Base_Type; 1650 1651 -------------------- 1652 -- Identifier_For -- 1653 -------------------- 1654 1655 function Identifier_For (S : Standard_Entity_Type) return Node_Id is 1656 Ident_Node : Node_Id; 1657 begin 1658 Ident_Node := New_Node (N_Identifier, Stloc); 1659 Set_Chars (Ident_Node, Chars (Standard_Entity (S))); 1660 Set_Entity (Ident_Node, Standard_Entity (S)); 1661 return Ident_Node; 1662 end Identifier_For; 1663 1664 -------------------- 1665 -- Make_Component -- 1666 -------------------- 1667 1668 procedure Make_Component 1669 (Rec : Entity_Id; 1670 Typ : Entity_Id; 1671 Nam : String) 1672 is 1673 Id : constant Entity_Id := New_Standard_Entity; 1674 1675 begin 1676 Set_Ekind (Id, E_Component); 1677 Set_Etype (Id, Typ); 1678 Set_Scope (Id, Rec); 1679 Init_Component_Location (Id); 1680 1681 Set_Original_Record_Component (Id, Id); 1682 Make_Name (Id, Nam); 1683 Append_Entity (Id, Rec); 1684 end Make_Component; 1685 1686 ----------------- 1687 -- Make_Formal -- 1688 ----------------- 1689 1690 function Make_Formal 1691 (Typ : Entity_Id; 1692 Formal_Name : String) return Entity_Id 1693 is 1694 Formal : Entity_Id; 1695 1696 begin 1697 Formal := New_Standard_Entity; 1698 1699 Set_Ekind (Formal, E_In_Parameter); 1700 Set_Mechanism (Formal, Default_Mechanism); 1701 Set_Scope (Formal, Standard_Standard); 1702 Set_Etype (Formal, Typ); 1703 Make_Name (Formal, Formal_Name); 1704 1705 return Formal; 1706 end Make_Formal; 1707 1708 ------------------ 1709 -- Make_Integer -- 1710 ------------------ 1711 1712 function Make_Integer (V : Uint) return Node_Id is 1713 N : constant Node_Id := Make_Integer_Literal (Stloc, V); 1714 begin 1715 Set_Is_Static_Expression (N); 1716 return N; 1717 end Make_Integer; 1718 1719 --------------- 1720 -- Make_Name -- 1721 --------------- 1722 1723 procedure Make_Name (Id : Entity_Id; Nam : String) is 1724 begin 1725 for J in 1 .. Nam'Length loop 1726 Name_Buffer (J) := Fold_Lower (Nam (Nam'First + (J - 1))); 1727 end loop; 1728 1729 Name_Len := Nam'Length; 1730 Set_Chars (Id, Name_Find); 1731 end Make_Name; 1732 1733 ------------------ 1734 -- New_Operator -- 1735 ------------------ 1736 1737 function New_Operator (Op : Name_Id; Typ : Entity_Id) return Entity_Id is 1738 Ident_Node : Entity_Id; 1739 1740 begin 1741 Ident_Node := Make_Defining_Identifier (Stloc, Op); 1742 1743 Set_Is_Pure (Ident_Node, True); 1744 Set_Ekind (Ident_Node, E_Operator); 1745 Set_Etype (Ident_Node, Typ); 1746 Set_Scope (Ident_Node, Standard_Standard); 1747 Set_Homonym (Ident_Node, Get_Name_Entity_Id (Op)); 1748 Set_Convention (Ident_Node, Convention_Intrinsic); 1749 1750 Set_Is_Immediately_Visible (Ident_Node, True); 1751 Set_Is_Intrinsic_Subprogram (Ident_Node, True); 1752 1753 Set_Name_Entity_Id (Op, Ident_Node); 1754 Append_Entity (Ident_Node, Standard_Standard); 1755 return Ident_Node; 1756 end New_Operator; 1757 1758 ------------------------- 1759 -- New_Standard_Entity -- 1760 ------------------------- 1761 1762 function New_Standard_Entity 1763 (New_Node_Kind : Node_Kind := N_Defining_Identifier) return Entity_Id 1764 is 1765 E : constant Entity_Id := New_Entity (New_Node_Kind, Stloc); 1766 1767 begin 1768 -- All standard entities are Pure and Public 1769 1770 Set_Is_Pure (E); 1771 Set_Is_Public (E); 1772 1773 -- All standard entity names are analyzed manually, and are thus 1774 -- frozen as soon as they are created. 1775 1776 Set_Is_Frozen (E); 1777 1778 -- Set debug information required for all standard types 1779 1780 Set_Needs_Debug_Info (E); 1781 1782 -- All standard entities are built with fully qualified names, so 1783 -- set the flag to prevent an abortive attempt at requalification! 1784 1785 Set_Has_Qualified_Name (E); 1786 1787 -- Return newly created entity to be completed by caller 1788 1789 return E; 1790 end New_Standard_Entity; 1791 1792 -------------------- 1793 -- Print_Standard -- 1794 -------------------- 1795 1796 procedure Print_Standard is 1797 1798 procedure P (Item : String) renames Output.Write_Line; 1799 -- Short-hand, since we do a lot of line writes here! 1800 1801 procedure P_Int_Range (Size : Pos); 1802 -- Prints the range of an integer based on its Size 1803 1804 procedure P_Float_Range (Id : Entity_Id); 1805 -- Prints the bounds range for the given float type entity 1806 1807 procedure P_Float_Type (Id : Entity_Id); 1808 -- Prints the type declaration of the given float type entity 1809 1810 procedure P_Mixed_Name (Id : Name_Id); 1811 -- Prints Id in mixed case 1812 1813 ------------------- 1814 -- P_Float_Range -- 1815 ------------------- 1816 1817 procedure P_Float_Range (Id : Entity_Id) is 1818 begin 1819 Write_Str (" range "); 1820 UR_Write (Realval (Type_Low_Bound (Id))); 1821 Write_Str (" .. "); 1822 UR_Write (Realval (Type_High_Bound (Id))); 1823 Write_Str (";"); 1824 Write_Eol; 1825 end P_Float_Range; 1826 1827 ------------------ 1828 -- P_Float_Type -- 1829 ------------------ 1830 1831 procedure P_Float_Type (Id : Entity_Id) is 1832 begin 1833 Write_Str (" type "); 1834 P_Mixed_Name (Chars (Id)); 1835 Write_Str (" is digits "); 1836 Write_Int (UI_To_Int (Digits_Value (Id))); 1837 Write_Eol; 1838 P_Float_Range (Id); 1839 Write_Str (" for "); 1840 P_Mixed_Name (Chars (Id)); 1841 Write_Str ("'Size use "); 1842 Write_Int (UI_To_Int (RM_Size (Id))); 1843 Write_Line (";"); 1844 Write_Eol; 1845 end P_Float_Type; 1846 1847 ----------------- 1848 -- P_Int_Range -- 1849 ----------------- 1850 1851 procedure P_Int_Range (Size : Pos) is 1852 begin 1853 Write_Str (" is range -(2 **"); 1854 Write_Int (Size - 1); 1855 Write_Str (")"); 1856 Write_Str (" .. +(2 **"); 1857 Write_Int (Size - 1); 1858 Write_Str (" - 1);"); 1859 Write_Eol; 1860 end P_Int_Range; 1861 1862 ------------------ 1863 -- P_Mixed_Name -- 1864 ------------------ 1865 1866 procedure P_Mixed_Name (Id : Name_Id) is 1867 begin 1868 Get_Name_String (Id); 1869 1870 for J in 1 .. Name_Len loop 1871 if J = 1 or else Name_Buffer (J - 1) = '_' then 1872 Name_Buffer (J) := Fold_Upper (Name_Buffer (J)); 1873 end if; 1874 end loop; 1875 1876 Write_Str (Name_Buffer (1 .. Name_Len)); 1877 end P_Mixed_Name; 1878 1879 -- Start of processing for Print_Standard 1880 1881 begin 1882 P ("-- Representation of package Standard"); 1883 Write_Eol; 1884 P ("-- This is not accurate Ada, since new base types cannot be "); 1885 P ("-- created, but the listing shows the target dependent"); 1886 P ("-- characteristics of the Standard types for this compiler"); 1887 Write_Eol; 1888 1889 P ("package Standard is"); 1890 P ("pragma Pure (Standard);"); 1891 Write_Eol; 1892 1893 P (" type Boolean is (False, True);"); 1894 P (" for Boolean'Size use 1;"); 1895 P (" for Boolean use (False => 0, True => 1);"); 1896 Write_Eol; 1897 1898 -- Integer types 1899 1900 Write_Str (" type Integer"); 1901 P_Int_Range (Standard_Integer_Size); 1902 Write_Str (" for Integer'Size use "); 1903 Write_Int (Standard_Integer_Size); 1904 P (";"); 1905 Write_Eol; 1906 1907 P (" subtype Natural is Integer range 0 .. Integer'Last;"); 1908 P (" subtype Positive is Integer range 1 .. Integer'Last;"); 1909 Write_Eol; 1910 1911 Write_Str (" type Short_Short_Integer"); 1912 P_Int_Range (Standard_Short_Short_Integer_Size); 1913 Write_Str (" for Short_Short_Integer'Size use "); 1914 Write_Int (Standard_Short_Short_Integer_Size); 1915 P (";"); 1916 Write_Eol; 1917 1918 Write_Str (" type Short_Integer"); 1919 P_Int_Range (Standard_Short_Integer_Size); 1920 Write_Str (" for Short_Integer'Size use "); 1921 Write_Int (Standard_Short_Integer_Size); 1922 P (";"); 1923 Write_Eol; 1924 1925 Write_Str (" type Long_Integer"); 1926 P_Int_Range (Standard_Long_Integer_Size); 1927 Write_Str (" for Long_Integer'Size use "); 1928 Write_Int (Standard_Long_Integer_Size); 1929 P (";"); 1930 Write_Eol; 1931 1932 Write_Str (" type Long_Long_Integer"); 1933 P_Int_Range (Standard_Long_Long_Integer_Size); 1934 Write_Str (" for Long_Long_Integer'Size use "); 1935 Write_Int (Standard_Long_Long_Integer_Size); 1936 P (";"); 1937 Write_Eol; 1938 1939 -- Floating point types 1940 1941 P_Float_Type (Standard_Short_Float); 1942 P_Float_Type (Standard_Float); 1943 P_Float_Type (Standard_Long_Float); 1944 P_Float_Type (Standard_Long_Long_Float); 1945 1946 P (" type Character is (...)"); 1947 Write_Str (" for Character'Size use "); 1948 Write_Int (Standard_Character_Size); 1949 P (";"); 1950 P (" -- See RM A.1(35) for details of this type"); 1951 Write_Eol; 1952 1953 P (" type Wide_Character is (...)"); 1954 Write_Str (" for Wide_Character'Size use "); 1955 Write_Int (Standard_Wide_Character_Size); 1956 P (";"); 1957 P (" -- See RM A.1(36) for details of this type"); 1958 Write_Eol; 1959 1960 P (" type Wide_Wide_Character is (...)"); 1961 Write_Str (" for Wide_Wide_Character'Size use "); 1962 Write_Int (Standard_Wide_Wide_Character_Size); 1963 P (";"); 1964 P (" -- See RM A.1(36) for details of this type"); 1965 1966 P (" type String is array (Positive range <>) of Character;"); 1967 P (" pragma Pack (String);"); 1968 Write_Eol; 1969 1970 P (" type Wide_String is array (Positive range <>)" & 1971 " of Wide_Character;"); 1972 P (" pragma Pack (Wide_String);"); 1973 Write_Eol; 1974 1975 P (" type Wide_Wide_String is array (Positive range <>)" & 1976 " of Wide_Wide_Character;"); 1977 P (" pragma Pack (Wide_Wide_String);"); 1978 Write_Eol; 1979 1980 -- We only have one representation each for 32-bit and 64-bit sizes, 1981 -- so select the right one based on Duration_32_Bits_On_Target. 1982 1983 if Duration_32_Bits_On_Target then 1984 P (" type Duration is delta 0.020"); 1985 P (" range -((2 ** 31 - 1) * 0.020) .."); 1986 P (" +((2 ** 31 - 1) * 0.020);"); 1987 P (" for Duration'Small use 0.020;"); 1988 1989 else 1990 P (" type Duration is delta 0.000000001"); 1991 P (" range -((2 ** 63 - 1) * 0.000000001) .."); 1992 P (" +((2 ** 63 - 1) * 0.000000001);"); 1993 P (" for Duration'Small use 0.000000001;"); 1994 end if; 1995 1996 Write_Eol; 1997 1998 P (" Constraint_Error : exception;"); 1999 P (" Program_Error : exception;"); 2000 P (" Storage_Error : exception;"); 2001 P (" Tasking_Error : exception;"); 2002 P (" Numeric_Error : exception renames Constraint_Error;"); 2003 Write_Eol; 2004 2005 P ("end Standard;"); 2006 end Print_Standard; 2007 2008 ------------------------- 2009 -- Register_Float_Type -- 2010 ------------------------- 2011 2012 procedure Register_Float_Type 2013 (Name : C_String; 2014 Digs : Natural; 2015 Complex : Boolean; 2016 Count : Natural; 2017 Float_Rep : Float_Rep_Kind; 2018 Precision : Positive; 2019 Size : Positive; 2020 Alignment : Natural) 2021 is 2022 T : String (1 .. Name'Length); 2023 Last : Natural := 0; 2024 2025 procedure Dump; 2026 -- Dump information given by the back end for the type to register 2027 2028 procedure Dump is 2029 begin 2030 Write_Str ("type " & T (1 .. Last) & " is "); 2031 2032 if Count > 0 then 2033 Write_Str ("array (1 .. "); 2034 Write_Int (Int (Count)); 2035 2036 if Complex then 2037 Write_Str (", 1 .. 2"); 2038 end if; 2039 2040 Write_Str (") of "); 2041 2042 elsif Complex then 2043 Write_Str ("array (1 .. 2) of "); 2044 end if; 2045 2046 if Digs > 0 then 2047 Write_Str ("digits "); 2048 Write_Int (Int (Digs)); 2049 Write_Line (";"); 2050 2051 Write_Str ("pragma Float_Representation ("); 2052 2053 case Float_Rep is 2054 when IEEE_Binary => Write_Str ("IEEE"); 2055 when VAX_Native => 2056 case Digs is 2057 when 6 => Write_Str ("VAXF"); 2058 when 9 => Write_Str ("VAXD"); 2059 when 15 => Write_Str ("VAXG"); 2060 when others => Write_Str ("VAX_"); Write_Int (Int (Digs)); 2061 end case; 2062 when AAMP => Write_Str ("AAMP"); 2063 end case; 2064 Write_Line (", " & T & ");"); 2065 2066 else 2067 Write_Str ("mod 2**"); 2068 Write_Int (Int (Precision / Positive'Max (1, Count))); 2069 Write_Line (";"); 2070 end if; 2071 2072 if Precision = Size then 2073 Write_Str ("for " & T (1 .. Last) & "'Size use "); 2074 Write_Int (Int (Size)); 2075 Write_Line (";"); 2076 2077 else 2078 Write_Str ("for " & T (1 .. Last) & "'Value_Size use "); 2079 Write_Int (Int (Precision)); 2080 Write_Line (";"); 2081 2082 Write_Str ("for " & T (1 .. Last) & "'Object_Size use "); 2083 Write_Int (Int (Size)); 2084 Write_Line (";"); 2085 end if; 2086 2087 Write_Str ("for " & T & "'Alignment use "); 2088 Write_Int (Int (Alignment / 8)); 2089 Write_Line (";"); 2090 end Dump; 2091 2092 begin 2093 for J in T'Range loop 2094 T (J) := Name (Name'First + J - 1); 2095 if T (J) = ASCII.NUL then 2096 Last := J - 1; 2097 exit; 2098 end if; 2099 end loop; 2100 2101 if Debug_Flag_Dot_B then 2102 Dump; 2103 end if; 2104 2105 if Digs > 0 and then not Complex and then Count = 0 then 2106 declare 2107 Ent : constant Entity_Id := New_Standard_Entity; 2108 begin 2109 Set_Defining_Identifier 2110 (New_Node (N_Full_Type_Declaration, Stloc), Ent); 2111 Make_Name (Ent, T (1 .. Last)); 2112 Set_Scope (Ent, Standard_Standard); 2113 Build_Float_Type (Ent, Int (Size), Float_Rep, Pos (Digs)); 2114 Set_RM_Size (Ent, UI_From_Int (Int (Precision))); 2115 Set_Alignment (Ent, UI_From_Int (Int (Alignment / 8))); 2116 2117 if No (Back_End_Float_Types) then 2118 Back_End_Float_Types := New_Elmt_List; 2119 end if; 2120 2121 Append_Elmt (Ent, Back_End_Float_Types); 2122 end; 2123 end if; 2124 end Register_Float_Type; 2125 2126 ---------------------- 2127 -- Set_Float_Bounds -- 2128 ---------------------- 2129 2130 procedure Set_Float_Bounds (Id : Entity_Id) is 2131 L : Node_Id; 2132 -- Low bound of literal value 2133 2134 H : Node_Id; 2135 -- High bound of literal value 2136 2137 R : Node_Id; 2138 -- Range specification 2139 2140 Radix : constant Uint := Machine_Radix_Value (Id); 2141 Mantissa : constant Uint := Machine_Mantissa_Value (Id); 2142 Emax : constant Uint := Machine_Emax_Value (Id); 2143 Significand : constant Uint := Radix ** Mantissa - 1; 2144 Exponent : constant Uint := Emax - Mantissa; 2145 2146 begin 2147 -- Note: for the call from Cstand to initially create the types in 2148 -- Standard, Float_Rep will never be VAX_Native. Circuitry in Sem_Vfpt 2149 -- will adjust these types appropriately VAX_Native if a pragma 2150 -- Float_Representation (VAX_Float) is used. 2151 2152 H := Make_Float_Literal (Stloc, Radix, Significand, Exponent); 2153 L := Make_Float_Literal (Stloc, Radix, -Significand, Exponent); 2154 2155 Set_Etype (L, Id); 2156 Set_Is_Static_Expression (L); 2157 2158 Set_Etype (H, Id); 2159 Set_Is_Static_Expression (H); 2160 2161 R := New_Node (N_Range, Stloc); 2162 Set_Low_Bound (R, L); 2163 Set_High_Bound (R, H); 2164 Set_Includes_Infinities (R, True); 2165 Set_Scalar_Range (Id, R); 2166 Set_Etype (R, Id); 2167 Set_Parent (R, Id); 2168 end Set_Float_Bounds; 2169 2170 ------------------------ 2171 -- Set_Integer_Bounds -- 2172 ------------------------ 2173 2174 procedure Set_Integer_Bounds 2175 (Id : Entity_Id; 2176 Typ : Entity_Id; 2177 Lb : Uint; 2178 Hb : Uint) 2179 is 2180 L : Node_Id; -- Low bound of literal value 2181 H : Node_Id; -- High bound of literal value 2182 R : Node_Id; -- Range specification 2183 2184 begin 2185 L := Make_Integer (Lb); 2186 H := Make_Integer (Hb); 2187 2188 Set_Etype (L, Typ); 2189 Set_Etype (H, Typ); 2190 2191 R := New_Node (N_Range, Stloc); 2192 Set_Low_Bound (R, L); 2193 Set_High_Bound (R, H); 2194 Set_Scalar_Range (Id, R); 2195 Set_Etype (R, Typ); 2196 Set_Parent (R, Id); 2197 Set_Is_Unsigned_Type (Id, Lb >= 0); 2198 end Set_Integer_Bounds; 2199 2200end CStand; 2201