1------------------------------------------------------------------------------ 2-- -- 3-- GNAT COMPILER COMPONENTS -- 4-- -- 5-- L I B -- 6-- -- 7-- B o d y -- 8-- -- 9-- Copyright (C) 1992-2013, 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. -- 17-- -- 18-- As a special exception under Section 7 of GPL version 3, you are granted -- 19-- additional permissions described in the GCC Runtime Library Exception, -- 20-- version 3.1, as published by the Free Software Foundation. -- 21-- -- 22-- You should have received a copy of the GNU General Public License and -- 23-- a copy of the GCC Runtime Library Exception along with this program; -- 24-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see -- 25-- <http://www.gnu.org/licenses/>. -- 26-- -- 27-- GNAT was originally developed by the GNAT team at New York University. -- 28-- Extensive contributions were provided by Ada Core Technologies Inc. -- 29-- -- 30------------------------------------------------------------------------------ 31 32pragma Style_Checks (All_Checks); 33-- Subprogram ordering not enforced in this unit 34-- (because of some logical groupings). 35 36with Atree; use Atree; 37with Csets; use Csets; 38with Einfo; use Einfo; 39with Fname; use Fname; 40with Nlists; use Nlists; 41with Output; use Output; 42with Sinfo; use Sinfo; 43with Sinput; use Sinput; 44with Stand; use Stand; 45with Stringt; use Stringt; 46with Tree_IO; use Tree_IO; 47with Uname; use Uname; 48with Widechar; use Widechar; 49 50package body Lib is 51 52 Switch_Storing_Enabled : Boolean := True; 53 -- Controlled by Enable_Switch_Storing/Disable_Switch_Storing 54 55 ----------------------- 56 -- Local Subprograms -- 57 ----------------------- 58 59 type SEU_Result is ( 60 Yes_Before, -- S1 is in same extended unit as S2 and appears before it 61 Yes_Same, -- S1 is in same extended unit as S2, Slocs are the same 62 Yes_After, -- S1 is in same extended unit as S2, and appears after it 63 No); -- S2 is not in same extended unit as S2 64 65 function Check_Same_Extended_Unit (S1, S2 : Source_Ptr) return SEU_Result; 66 -- Used by In_Same_Extended_Unit and Earlier_In_Extended_Unit. Returns 67 -- value as described above. 68 69 function Get_Code_Or_Source_Unit 70 (S : Source_Ptr; 71 Unwind_Instances : Boolean) return Unit_Number_Type; 72 -- Common code for Get_Code_Unit (get unit of instantiation for location) 73 -- and Get_Source_Unit (get unit of template for location). 74 75 -------------------------------------------- 76 -- Access Functions for Unit Table Fields -- 77 -------------------------------------------- 78 79 function Cunit (U : Unit_Number_Type) return Node_Id is 80 begin 81 return Units.Table (U).Cunit; 82 end Cunit; 83 84 function Cunit_Entity (U : Unit_Number_Type) return Entity_Id is 85 begin 86 return Units.Table (U).Cunit_Entity; 87 end Cunit_Entity; 88 89 function Dependency_Num (U : Unit_Number_Type) return Nat is 90 begin 91 return Units.Table (U).Dependency_Num; 92 end Dependency_Num; 93 94 function Dynamic_Elab (U : Unit_Number_Type) return Boolean is 95 begin 96 return Units.Table (U).Dynamic_Elab; 97 end Dynamic_Elab; 98 99 function Error_Location (U : Unit_Number_Type) return Source_Ptr is 100 begin 101 return Units.Table (U).Error_Location; 102 end Error_Location; 103 104 function Expected_Unit (U : Unit_Number_Type) return Unit_Name_Type is 105 begin 106 return Units.Table (U).Expected_Unit; 107 end Expected_Unit; 108 109 function Fatal_Error (U : Unit_Number_Type) return Boolean is 110 begin 111 return Units.Table (U).Fatal_Error; 112 end Fatal_Error; 113 114 function Generate_Code (U : Unit_Number_Type) return Boolean is 115 begin 116 return Units.Table (U).Generate_Code; 117 end Generate_Code; 118 119 function Has_Allocator (U : Unit_Number_Type) return Boolean is 120 begin 121 return Units.Table (U).Has_Allocator; 122 end Has_Allocator; 123 124 function Has_RACW (U : Unit_Number_Type) return Boolean is 125 begin 126 return Units.Table (U).Has_RACW; 127 end Has_RACW; 128 129 function Is_Compiler_Unit (U : Unit_Number_Type) return Boolean is 130 begin 131 return Units.Table (U).Is_Compiler_Unit; 132 end Is_Compiler_Unit; 133 134 function Ident_String (U : Unit_Number_Type) return Node_Id is 135 begin 136 return Units.Table (U).Ident_String; 137 end Ident_String; 138 139 function Loading (U : Unit_Number_Type) return Boolean is 140 begin 141 return Units.Table (U).Loading; 142 end Loading; 143 144 function Main_CPU (U : Unit_Number_Type) return Int is 145 begin 146 return Units.Table (U).Main_CPU; 147 end Main_CPU; 148 149 function Main_Priority (U : Unit_Number_Type) return Int is 150 begin 151 return Units.Table (U).Main_Priority; 152 end Main_Priority; 153 154 function Munit_Index (U : Unit_Number_Type) return Nat is 155 begin 156 return Units.Table (U).Munit_Index; 157 end Munit_Index; 158 159 function OA_Setting (U : Unit_Number_Type) return Character is 160 begin 161 return Units.Table (U).OA_Setting; 162 end OA_Setting; 163 164 function Source_Index (U : Unit_Number_Type) return Source_File_Index is 165 begin 166 return Units.Table (U).Source_Index; 167 end Source_Index; 168 169 function Unit_File_Name (U : Unit_Number_Type) return File_Name_Type is 170 begin 171 return Units.Table (U).Unit_File_Name; 172 end Unit_File_Name; 173 174 function Unit_Name (U : Unit_Number_Type) return Unit_Name_Type is 175 begin 176 return Units.Table (U).Unit_Name; 177 end Unit_Name; 178 179 ------------------------------------------ 180 -- Subprograms to Set Unit Table Fields -- 181 ------------------------------------------ 182 183 procedure Set_Cunit (U : Unit_Number_Type; N : Node_Id) is 184 begin 185 Units.Table (U).Cunit := N; 186 end Set_Cunit; 187 188 procedure Set_Cunit_Entity (U : Unit_Number_Type; E : Entity_Id) is 189 begin 190 Units.Table (U).Cunit_Entity := E; 191 Set_Is_Compilation_Unit (E); 192 end Set_Cunit_Entity; 193 194 procedure Set_Dynamic_Elab (U : Unit_Number_Type; B : Boolean := True) is 195 begin 196 Units.Table (U).Dynamic_Elab := B; 197 end Set_Dynamic_Elab; 198 199 procedure Set_Error_Location (U : Unit_Number_Type; W : Source_Ptr) is 200 begin 201 Units.Table (U).Error_Location := W; 202 end Set_Error_Location; 203 204 procedure Set_Fatal_Error (U : Unit_Number_Type; B : Boolean := True) is 205 begin 206 Units.Table (U).Fatal_Error := B; 207 end Set_Fatal_Error; 208 209 procedure Set_Generate_Code (U : Unit_Number_Type; B : Boolean := True) is 210 begin 211 Units.Table (U).Generate_Code := B; 212 end Set_Generate_Code; 213 214 procedure Set_Has_Allocator (U : Unit_Number_Type; B : Boolean := True) is 215 begin 216 Units.Table (U).Has_Allocator := B; 217 end Set_Has_Allocator; 218 219 procedure Set_Has_RACW (U : Unit_Number_Type; B : Boolean := True) is 220 begin 221 Units.Table (U).Has_RACW := B; 222 end Set_Has_RACW; 223 224 procedure Set_Is_Compiler_Unit 225 (U : Unit_Number_Type; 226 B : Boolean := True) 227 is 228 begin 229 Units.Table (U).Is_Compiler_Unit := B; 230 end Set_Is_Compiler_Unit; 231 232 procedure Set_Ident_String (U : Unit_Number_Type; N : Node_Id) is 233 begin 234 Units.Table (U).Ident_String := N; 235 end Set_Ident_String; 236 237 procedure Set_Loading (U : Unit_Number_Type; B : Boolean := True) is 238 begin 239 Units.Table (U).Loading := B; 240 end Set_Loading; 241 242 procedure Set_Main_CPU (U : Unit_Number_Type; P : Int) is 243 begin 244 Units.Table (U).Main_CPU := P; 245 end Set_Main_CPU; 246 247 procedure Set_Main_Priority (U : Unit_Number_Type; P : Int) is 248 begin 249 Units.Table (U).Main_Priority := P; 250 end Set_Main_Priority; 251 252 procedure Set_OA_Setting (U : Unit_Number_Type; C : Character) is 253 begin 254 Units.Table (U).OA_Setting := C; 255 end Set_OA_Setting; 256 257 procedure Set_Unit_Name (U : Unit_Number_Type; N : Unit_Name_Type) is 258 begin 259 Units.Table (U).Unit_Name := N; 260 end Set_Unit_Name; 261 262 ------------------------------ 263 -- Check_Same_Extended_Unit -- 264 ------------------------------ 265 266 function Check_Same_Extended_Unit (S1, S2 : Source_Ptr) return SEU_Result is 267 Sloc1 : Source_Ptr; 268 Sloc2 : Source_Ptr; 269 Sind1 : Source_File_Index; 270 Sind2 : Source_File_Index; 271 Inst1 : Source_Ptr; 272 Inst2 : Source_Ptr; 273 Unum1 : Unit_Number_Type; 274 Unum2 : Unit_Number_Type; 275 Unit1 : Node_Id; 276 Unit2 : Node_Id; 277 Depth1 : Nat; 278 Depth2 : Nat; 279 280 begin 281 if S1 = No_Location or else S2 = No_Location then 282 return No; 283 284 elsif S1 = Standard_Location then 285 if S2 = Standard_Location then 286 return Yes_Same; 287 else 288 return No; 289 end if; 290 291 elsif S2 = Standard_Location then 292 return No; 293 end if; 294 295 Sloc1 := S1; 296 Sloc2 := S2; 297 298 Unum1 := Get_Source_Unit (Sloc1); 299 Unum2 := Get_Source_Unit (Sloc2); 300 301 loop 302 -- Step 1: Check whether the two locations are in the same source 303 -- file. 304 305 Sind1 := Get_Source_File_Index (Sloc1); 306 Sind2 := Get_Source_File_Index (Sloc2); 307 308 if Sind1 = Sind2 then 309 if Sloc1 < Sloc2 then 310 return Yes_Before; 311 elsif Sloc1 > Sloc2 then 312 return Yes_After; 313 else 314 return Yes_Same; 315 end if; 316 end if; 317 318 -- Step 2: Check subunits. If a subunit is instantiated, follow the 319 -- instantiation chain rather than the stub chain. 320 321 Unit1 := Unit (Cunit (Unum1)); 322 Unit2 := Unit (Cunit (Unum2)); 323 Inst1 := Instantiation (Sind1); 324 Inst2 := Instantiation (Sind2); 325 326 if Nkind (Unit1) = N_Subunit 327 and then Present (Corresponding_Stub (Unit1)) 328 and then Inst1 = No_Location 329 then 330 if Nkind (Unit2) = N_Subunit 331 and then Present (Corresponding_Stub (Unit2)) 332 and then Inst2 = No_Location 333 then 334 -- Both locations refer to subunits which may have a common 335 -- ancestor. If they do, the deeper subunit must have a longer 336 -- unit name. Replace the deeper one with its corresponding 337 -- stub in order to find the nearest ancestor. 338 339 if Length_Of_Name (Unit_Name (Unum1)) < 340 Length_Of_Name (Unit_Name (Unum2)) 341 then 342 Sloc2 := Sloc (Corresponding_Stub (Unit2)); 343 Unum2 := Get_Source_Unit (Sloc2); 344 goto Continue; 345 346 else 347 Sloc1 := Sloc (Corresponding_Stub (Unit1)); 348 Unum1 := Get_Source_Unit (Sloc1); 349 goto Continue; 350 end if; 351 352 -- Sloc1 in subunit, Sloc2 not 353 354 else 355 Sloc1 := Sloc (Corresponding_Stub (Unit1)); 356 Unum1 := Get_Source_Unit (Sloc1); 357 goto Continue; 358 end if; 359 360 -- Sloc2 in subunit, Sloc1 not 361 362 elsif Nkind (Unit2) = N_Subunit 363 and then Present (Corresponding_Stub (Unit2)) 364 and then Inst2 = No_Location 365 then 366 Sloc2 := Sloc (Corresponding_Stub (Unit2)); 367 Unum2 := Get_Source_Unit (Sloc2); 368 goto Continue; 369 end if; 370 371 -- Step 3: Check instances. The two locations may yield a common 372 -- ancestor. 373 374 if Inst1 /= No_Location then 375 if Inst2 /= No_Location then 376 377 -- Both locations denote instantiations 378 379 Depth1 := Instantiation_Depth (Sloc1); 380 Depth2 := Instantiation_Depth (Sloc2); 381 382 if Depth1 < Depth2 then 383 Sloc2 := Inst2; 384 Unum2 := Get_Source_Unit (Sloc2); 385 goto Continue; 386 387 elsif Depth1 > Depth2 then 388 Sloc1 := Inst1; 389 Unum1 := Get_Source_Unit (Sloc1); 390 goto Continue; 391 392 else 393 Sloc1 := Inst1; 394 Sloc2 := Inst2; 395 Unum1 := Get_Source_Unit (Sloc1); 396 Unum2 := Get_Source_Unit (Sloc2); 397 goto Continue; 398 end if; 399 400 -- Sloc1 is an instantiation 401 402 else 403 Sloc1 := Inst1; 404 Unum1 := Get_Source_Unit (Sloc1); 405 goto Continue; 406 end if; 407 408 -- Sloc2 is an instantiation 409 410 elsif Inst2 /= No_Location then 411 Sloc2 := Inst2; 412 Unum2 := Get_Source_Unit (Sloc2); 413 goto Continue; 414 end if; 415 416 -- Step 4: One location in the spec, the other in the corresponding 417 -- body of the same unit. The location in the spec is considered 418 -- earlier. 419 420 if Nkind (Unit1) = N_Subprogram_Body 421 or else 422 Nkind (Unit1) = N_Package_Body 423 then 424 if Library_Unit (Cunit (Unum1)) = Cunit (Unum2) then 425 return Yes_After; 426 end if; 427 428 elsif Nkind (Unit2) = N_Subprogram_Body 429 or else 430 Nkind (Unit2) = N_Package_Body 431 then 432 if Library_Unit (Cunit (Unum2)) = Cunit (Unum1) then 433 return Yes_Before; 434 end if; 435 end if; 436 437 -- At this point it is certain that the two locations denote two 438 -- entirely separate units. 439 440 return No; 441 442 <<Continue>> 443 null; 444 end loop; 445 end Check_Same_Extended_Unit; 446 447 ------------------------------- 448 -- Compilation_Switches_Last -- 449 ------------------------------- 450 451 function Compilation_Switches_Last return Nat is 452 begin 453 return Compilation_Switches.Last; 454 end Compilation_Switches_Last; 455 456 --------------------------- 457 -- Enable_Switch_Storing -- 458 --------------------------- 459 460 procedure Enable_Switch_Storing is 461 begin 462 Switch_Storing_Enabled := True; 463 end Enable_Switch_Storing; 464 465 ---------------------------- 466 -- Disable_Switch_Storing -- 467 ---------------------------- 468 469 procedure Disable_Switch_Storing is 470 begin 471 Switch_Storing_Enabled := False; 472 end Disable_Switch_Storing; 473 474 ------------------------------ 475 -- Earlier_In_Extended_Unit -- 476 ------------------------------ 477 478 function Earlier_In_Extended_Unit (S1, S2 : Source_Ptr) return Boolean is 479 begin 480 return Check_Same_Extended_Unit (S1, S2) = Yes_Before; 481 end Earlier_In_Extended_Unit; 482 483 ----------------------- 484 -- Exact_Source_Name -- 485 ----------------------- 486 487 function Exact_Source_Name (Loc : Source_Ptr) return String is 488 U : constant Unit_Number_Type := Get_Source_Unit (Loc); 489 Buf : constant Source_Buffer_Ptr := Source_Text (Source_Index (U)); 490 Orig : constant Source_Ptr := Original_Location (Loc); 491 P : Source_Ptr; 492 493 WC : Char_Code; 494 Err : Boolean; 495 pragma Warnings (Off, WC); 496 pragma Warnings (Off, Err); 497 498 begin 499 -- Entity is character literal 500 501 if Buf (Orig) = ''' then 502 return String (Buf (Orig .. Orig + 2)); 503 504 -- Entity is operator symbol 505 506 elsif Buf (Orig) = '"' or else Buf (Orig) = '%' then 507 P := Orig; 508 509 loop 510 P := P + 1; 511 exit when Buf (P) = Buf (Orig); 512 end loop; 513 514 return String (Buf (Orig .. P)); 515 516 -- Entity is identifier 517 518 else 519 P := Orig; 520 521 loop 522 if Is_Start_Of_Wide_Char (Buf, P) then 523 Scan_Wide (Buf, P, WC, Err); 524 elsif not Identifier_Char (Buf (P)) then 525 exit; 526 else 527 P := P + 1; 528 end if; 529 end loop; 530 531 -- Write out the identifier by copying the exact source characters 532 -- used in its declaration. Note that this means wide characters will 533 -- be in their original encoded form. 534 535 return String (Buf (Orig .. P - 1)); 536 end if; 537 end Exact_Source_Name; 538 539 ---------------------------- 540 -- Entity_Is_In_Main_Unit -- 541 ---------------------------- 542 543 function Entity_Is_In_Main_Unit (E : Entity_Id) return Boolean is 544 S : Entity_Id; 545 546 begin 547 S := Scope (E); 548 549 while S /= Standard_Standard loop 550 if S = Main_Unit_Entity then 551 return True; 552 elsif Ekind (S) = E_Package and then Is_Child_Unit (S) then 553 return False; 554 else 555 S := Scope (S); 556 end if; 557 end loop; 558 559 return False; 560 end Entity_Is_In_Main_Unit; 561 562 -------------------------- 563 -- Generic_May_Lack_ALI -- 564 -------------------------- 565 566 function Generic_May_Lack_ALI (Sfile : File_Name_Type) return Boolean is 567 begin 568 -- We allow internal generic units to be used without having a 569 -- corresponding ALI files to help bootstrapping with older compilers 570 -- that did not support generating ALIs for such generics. It is safe 571 -- to do so because the only thing the generated code would contain 572 -- is the elaboration boolean, and we are careful to elaborate all 573 -- predefined units first anyway. 574 575 return Is_Internal_File_Name 576 (Fname => Sfile, 577 Renamings_Included => True); 578 end Generic_May_Lack_ALI; 579 580 ----------------------------- 581 -- Get_Code_Or_Source_Unit -- 582 ----------------------------- 583 584 function Get_Code_Or_Source_Unit 585 (S : Source_Ptr; 586 Unwind_Instances : Boolean) return Unit_Number_Type 587 is 588 begin 589 -- Search table unless we have No_Location, which can happen if the 590 -- relevant location has not been set yet. Happens for example when 591 -- we obtain Sloc (Cunit (Main_Unit)) before it is set. 592 593 if S /= No_Location then 594 declare 595 Source_File : Source_File_Index; 596 Source_Unit : Unit_Number_Type; 597 598 begin 599 Source_File := Get_Source_File_Index (S); 600 601 if Unwind_Instances then 602 while Template (Source_File) /= No_Source_File loop 603 Source_File := Template (Source_File); 604 end loop; 605 end if; 606 607 Source_Unit := Unit (Source_File); 608 609 if Source_Unit /= No_Unit then 610 return Source_Unit; 611 end if; 612 end; 613 end if; 614 615 -- If S was No_Location, or was not in the table, we must be in the main 616 -- source unit (and the value has not been placed in the table yet), 617 -- or in one of the configuration pragma files. 618 619 return Main_Unit; 620 end Get_Code_Or_Source_Unit; 621 622 ------------------- 623 -- Get_Code_Unit -- 624 ------------------- 625 626 function Get_Code_Unit (S : Source_Ptr) return Unit_Number_Type is 627 begin 628 return Get_Code_Or_Source_Unit (Top_Level_Location (S), 629 Unwind_Instances => False); 630 end Get_Code_Unit; 631 632 function Get_Code_Unit (N : Node_Or_Entity_Id) return Unit_Number_Type is 633 begin 634 return Get_Code_Unit (Sloc (N)); 635 end Get_Code_Unit; 636 637 ---------------------------- 638 -- Get_Compilation_Switch -- 639 ---------------------------- 640 641 function Get_Compilation_Switch (N : Pos) return String_Ptr is 642 begin 643 if N <= Compilation_Switches.Last then 644 return Compilation_Switches.Table (N); 645 646 else 647 return null; 648 end if; 649 end Get_Compilation_Switch; 650 651 ---------------------------------- 652 -- Get_Cunit_Entity_Unit_Number -- 653 ---------------------------------- 654 655 function Get_Cunit_Entity_Unit_Number 656 (E : Entity_Id) return Unit_Number_Type 657 is 658 begin 659 for U in Units.First .. Units.Last loop 660 if Cunit_Entity (U) = E then 661 return U; 662 end if; 663 end loop; 664 665 -- If not in the table, must be the main source unit, and we just 666 -- have not got it put into the table yet. 667 668 return Main_Unit; 669 end Get_Cunit_Entity_Unit_Number; 670 671 --------------------------- 672 -- Get_Cunit_Unit_Number -- 673 --------------------------- 674 675 function Get_Cunit_Unit_Number (N : Node_Id) return Unit_Number_Type is 676 begin 677 for U in Units.First .. Units.Last loop 678 if Cunit (U) = N then 679 return U; 680 end if; 681 end loop; 682 683 -- If not in the table, must be a spec created for a main unit that is a 684 -- child subprogram body which we have not inserted into the table yet. 685 686 if N = Library_Unit (Cunit (Main_Unit)) then 687 return Main_Unit; 688 689 -- If it is anything else, something is seriously wrong, and we really 690 -- don't want to proceed, even if assertions are off, so we explicitly 691 -- raise an exception in this case to terminate compilation. 692 693 else 694 raise Program_Error; 695 end if; 696 end Get_Cunit_Unit_Number; 697 698 --------------------- 699 -- Get_Source_Unit -- 700 --------------------- 701 702 function Get_Source_Unit (S : Source_Ptr) return Unit_Number_Type is 703 begin 704 return Get_Code_Or_Source_Unit (S, Unwind_Instances => True); 705 end Get_Source_Unit; 706 707 function Get_Source_Unit (N : Node_Or_Entity_Id) return Unit_Number_Type is 708 begin 709 return Get_Source_Unit (Sloc (N)); 710 end Get_Source_Unit; 711 712 -------------------------------- 713 -- In_Extended_Main_Code_Unit -- 714 -------------------------------- 715 716 function In_Extended_Main_Code_Unit 717 (N : Node_Or_Entity_Id) return Boolean 718 is 719 begin 720 if Sloc (N) = Standard_Location then 721 return False; 722 723 elsif Sloc (N) = No_Location then 724 return False; 725 726 -- Special case Itypes to test the Sloc of the associated node. The 727 -- reason we do this is for possible calls from gigi after -gnatD 728 -- processing is complete in sprint. This processing updates the 729 -- sloc fields of all nodes in the tree, but itypes are not in the 730 -- tree so their slocs do not get updated. 731 732 elsif Nkind (N) = N_Defining_Identifier 733 and then Is_Itype (N) 734 then 735 return In_Extended_Main_Code_Unit (Associated_Node_For_Itype (N)); 736 737 -- Otherwise see if we are in the main unit 738 739 elsif Get_Code_Unit (Sloc (N)) = Get_Code_Unit (Cunit (Main_Unit)) then 740 return True; 741 742 -- Node may be in spec (or subunit etc) of main unit 743 744 else 745 return 746 In_Same_Extended_Unit (N, Cunit (Main_Unit)); 747 end if; 748 end In_Extended_Main_Code_Unit; 749 750 function In_Extended_Main_Code_Unit (Loc : Source_Ptr) return Boolean is 751 begin 752 if Loc = Standard_Location then 753 return False; 754 755 elsif Loc = No_Location then 756 return False; 757 758 -- Otherwise see if we are in the main unit 759 760 elsif Get_Code_Unit (Loc) = Get_Code_Unit (Cunit (Main_Unit)) then 761 return True; 762 763 -- Location may be in spec (or subunit etc) of main unit 764 765 else 766 return 767 In_Same_Extended_Unit (Loc, Sloc (Cunit (Main_Unit))); 768 end if; 769 end In_Extended_Main_Code_Unit; 770 771 ---------------------------------- 772 -- In_Extended_Main_Source_Unit -- 773 ---------------------------------- 774 775 function In_Extended_Main_Source_Unit 776 (N : Node_Or_Entity_Id) return Boolean 777 is 778 Nloc : constant Source_Ptr := Sloc (N); 779 Mloc : constant Source_Ptr := Sloc (Cunit (Main_Unit)); 780 781 begin 782 -- If parsing, then use the global flag to indicate result 783 784 if Compiler_State = Parsing then 785 return Parsing_Main_Extended_Source; 786 787 -- Special value cases 788 789 elsif Nloc = Standard_Location then 790 return False; 791 792 elsif Nloc = No_Location then 793 return False; 794 795 -- Special case Itypes to test the Sloc of the associated node. The 796 -- reason we do this is for possible calls from gigi after -gnatD 797 -- processing is complete in sprint. This processing updates the 798 -- sloc fields of all nodes in the tree, but itypes are not in the 799 -- tree so their slocs do not get updated. 800 801 elsif Nkind (N) = N_Defining_Identifier 802 and then Is_Itype (N) 803 then 804 return In_Extended_Main_Source_Unit (Associated_Node_For_Itype (N)); 805 806 -- Otherwise compare original locations to see if in same unit 807 808 else 809 return 810 In_Same_Extended_Unit 811 (Original_Location (Nloc), Original_Location (Mloc)); 812 end if; 813 end In_Extended_Main_Source_Unit; 814 815 function In_Extended_Main_Source_Unit 816 (Loc : Source_Ptr) return Boolean 817 is 818 Mloc : constant Source_Ptr := Sloc (Cunit (Main_Unit)); 819 820 begin 821 -- If parsing, then use the global flag to indicate result 822 823 if Compiler_State = Parsing then 824 return Parsing_Main_Extended_Source; 825 826 -- Special value cases 827 828 elsif Loc = Standard_Location then 829 return False; 830 831 elsif Loc = No_Location then 832 return False; 833 834 -- Otherwise compare original locations to see if in same unit 835 836 else 837 return 838 In_Same_Extended_Unit 839 (Original_Location (Loc), Original_Location (Mloc)); 840 end if; 841 end In_Extended_Main_Source_Unit; 842 843 ------------------------ 844 -- In_Predefined_Unit -- 845 ------------------------ 846 847 function In_Predefined_Unit (N : Node_Or_Entity_Id) return Boolean is 848 begin 849 return In_Predefined_Unit (Sloc (N)); 850 end In_Predefined_Unit; 851 852 function In_Predefined_Unit (S : Source_Ptr) return Boolean is 853 Unit : constant Unit_Number_Type := Get_Source_Unit (S); 854 File : constant File_Name_Type := Unit_File_Name (Unit); 855 begin 856 return Is_Predefined_File_Name (File); 857 end In_Predefined_Unit; 858 859 ----------------------- 860 -- In_Same_Code_Unit -- 861 ----------------------- 862 863 function In_Same_Code_Unit (N1, N2 : Node_Or_Entity_Id) return Boolean is 864 S1 : constant Source_Ptr := Sloc (N1); 865 S2 : constant Source_Ptr := Sloc (N2); 866 867 begin 868 if S1 = No_Location or else S2 = No_Location then 869 return False; 870 871 elsif S1 = Standard_Location then 872 return S2 = Standard_Location; 873 874 elsif S2 = Standard_Location then 875 return False; 876 end if; 877 878 return Get_Code_Unit (N1) = Get_Code_Unit (N2); 879 end In_Same_Code_Unit; 880 881 --------------------------- 882 -- In_Same_Extended_Unit -- 883 --------------------------- 884 885 function In_Same_Extended_Unit 886 (N1, N2 : Node_Or_Entity_Id) return Boolean 887 is 888 begin 889 return Check_Same_Extended_Unit (Sloc (N1), Sloc (N2)) /= No; 890 end In_Same_Extended_Unit; 891 892 function In_Same_Extended_Unit (S1, S2 : Source_Ptr) return Boolean is 893 begin 894 return Check_Same_Extended_Unit (S1, S2) /= No; 895 end In_Same_Extended_Unit; 896 897 ------------------------- 898 -- In_Same_Source_Unit -- 899 ------------------------- 900 901 function In_Same_Source_Unit (N1, N2 : Node_Or_Entity_Id) return Boolean is 902 S1 : constant Source_Ptr := Sloc (N1); 903 S2 : constant Source_Ptr := Sloc (N2); 904 905 begin 906 if S1 = No_Location or else S2 = No_Location then 907 return False; 908 909 elsif S1 = Standard_Location then 910 return S2 = Standard_Location; 911 912 elsif S2 = Standard_Location then 913 return False; 914 end if; 915 916 return Get_Source_Unit (N1) = Get_Source_Unit (N2); 917 end In_Same_Source_Unit; 918 919 ----------------------------- 920 -- Increment_Serial_Number -- 921 ----------------------------- 922 923 function Increment_Serial_Number return Nat is 924 TSN : Int renames Units.Table (Current_Sem_Unit).Serial_Number; 925 begin 926 TSN := TSN + 1; 927 return TSN; 928 end Increment_Serial_Number; 929 930 ---------------- 931 -- Initialize -- 932 ---------------- 933 934 procedure Initialize is 935 begin 936 Linker_Option_Lines.Init; 937 Notes.Init; 938 Load_Stack.Init; 939 Units.Init; 940 Compilation_Switches.Init; 941 end Initialize; 942 943 --------------- 944 -- Is_Loaded -- 945 --------------- 946 947 function Is_Loaded (Uname : Unit_Name_Type) return Boolean is 948 begin 949 for Unum in Units.First .. Units.Last loop 950 if Uname = Unit_Name (Unum) then 951 return True; 952 end if; 953 end loop; 954 955 return False; 956 end Is_Loaded; 957 958 --------------- 959 -- Last_Unit -- 960 --------------- 961 962 function Last_Unit return Unit_Number_Type is 963 begin 964 return Units.Last; 965 end Last_Unit; 966 967 ---------- 968 -- List -- 969 ---------- 970 971 procedure List (File_Names_Only : Boolean := False) is separate; 972 973 ---------- 974 -- Lock -- 975 ---------- 976 977 procedure Lock is 978 begin 979 Linker_Option_Lines.Locked := True; 980 Load_Stack.Locked := True; 981 Units.Locked := True; 982 Linker_Option_Lines.Release; 983 Load_Stack.Release; 984 Units.Release; 985 end Lock; 986 987 --------------- 988 -- Num_Units -- 989 --------------- 990 991 function Num_Units return Nat is 992 begin 993 return Int (Units.Last) - Int (Main_Unit) + 1; 994 end Num_Units; 995 996 ----------------- 997 -- Remove_Unit -- 998 ----------------- 999 1000 procedure Remove_Unit (U : Unit_Number_Type) is 1001 begin 1002 if U = Units.Last then 1003 Units.Decrement_Last; 1004 end if; 1005 end Remove_Unit; 1006 1007 ---------------------------------- 1008 -- Replace_Linker_Option_String -- 1009 ---------------------------------- 1010 1011 procedure Replace_Linker_Option_String 1012 (S : String_Id; Match_String : String) 1013 is 1014 begin 1015 if Match_String'Length > 0 then 1016 for J in 1 .. Linker_Option_Lines.Last loop 1017 String_To_Name_Buffer (Linker_Option_Lines.Table (J).Option); 1018 1019 if Match_String = Name_Buffer (1 .. Match_String'Length) then 1020 Linker_Option_Lines.Table (J).Option := S; 1021 return; 1022 end if; 1023 end loop; 1024 end if; 1025 1026 Store_Linker_Option_String (S); 1027 end Replace_Linker_Option_String; 1028 1029 ---------- 1030 -- Sort -- 1031 ---------- 1032 1033 procedure Sort (Tbl : in out Unit_Ref_Table) is separate; 1034 1035 ------------------------------ 1036 -- Store_Compilation_Switch -- 1037 ------------------------------ 1038 1039 procedure Store_Compilation_Switch (Switch : String) is 1040 begin 1041 if Switch_Storing_Enabled then 1042 Compilation_Switches.Increment_Last; 1043 Compilation_Switches.Table (Compilation_Switches.Last) := 1044 new String'(Switch); 1045 1046 -- Fix up --RTS flag which has been transformed by the gcc driver 1047 -- into -fRTS 1048 1049 if Switch'Last >= Switch'First + 4 1050 and then Switch (Switch'First .. Switch'First + 4) = "-fRTS" 1051 then 1052 Compilation_Switches.Table 1053 (Compilation_Switches.Last) (Switch'First + 1) := '-'; 1054 end if; 1055 end if; 1056 end Store_Compilation_Switch; 1057 1058 -------------------------------- 1059 -- Store_Linker_Option_String -- 1060 -------------------------------- 1061 1062 procedure Store_Linker_Option_String (S : String_Id) is 1063 begin 1064 Linker_Option_Lines.Append ((Option => S, Unit => Current_Sem_Unit)); 1065 end Store_Linker_Option_String; 1066 1067 ---------------- 1068 -- Store_Note -- 1069 ---------------- 1070 1071 procedure Store_Note (N : Node_Id) is 1072 begin 1073 Notes.Append ((Pragma_Node => N, Unit => Current_Sem_Unit)); 1074 end Store_Note; 1075 1076 ------------------------------- 1077 -- Synchronize_Serial_Number -- 1078 ------------------------------- 1079 1080 procedure Synchronize_Serial_Number is 1081 TSN : Int renames Units.Table (Current_Sem_Unit).Serial_Number; 1082 begin 1083 TSN := TSN + 1; 1084 end Synchronize_Serial_Number; 1085 1086 --------------- 1087 -- Tree_Read -- 1088 --------------- 1089 1090 procedure Tree_Read is 1091 N : Nat; 1092 S : String_Ptr; 1093 1094 begin 1095 Units.Tree_Read; 1096 1097 -- Read Compilation_Switches table. First release the memory occupied 1098 -- by the previously loaded switches. 1099 1100 for J in Compilation_Switches.First .. Compilation_Switches.Last loop 1101 Free (Compilation_Switches.Table (J)); 1102 end loop; 1103 1104 Tree_Read_Int (N); 1105 Compilation_Switches.Set_Last (N); 1106 1107 for J in 1 .. N loop 1108 Tree_Read_Str (S); 1109 Compilation_Switches.Table (J) := S; 1110 end loop; 1111 end Tree_Read; 1112 1113 ---------------- 1114 -- Tree_Write -- 1115 ---------------- 1116 1117 procedure Tree_Write is 1118 begin 1119 Units.Tree_Write; 1120 1121 -- Write Compilation_Switches table 1122 1123 Tree_Write_Int (Compilation_Switches.Last); 1124 1125 for J in 1 .. Compilation_Switches.Last loop 1126 Tree_Write_Str (Compilation_Switches.Table (J)); 1127 end loop; 1128 end Tree_Write; 1129 1130 ------------ 1131 -- Unlock -- 1132 ------------ 1133 1134 procedure Unlock is 1135 begin 1136 Linker_Option_Lines.Locked := False; 1137 Load_Stack.Locked := False; 1138 Units.Locked := False; 1139 end Unlock; 1140 1141 ----------------- 1142 -- Version_Get -- 1143 ----------------- 1144 1145 function Version_Get (U : Unit_Number_Type) return Word_Hex_String is 1146 begin 1147 return Get_Hex_String (Units.Table (U).Version); 1148 end Version_Get; 1149 1150 ------------------------ 1151 -- Version_Referenced -- 1152 ------------------------ 1153 1154 procedure Version_Referenced (S : String_Id) is 1155 begin 1156 Version_Ref.Append (S); 1157 end Version_Referenced; 1158 1159 --------------------- 1160 -- Write_Unit_Info -- 1161 --------------------- 1162 1163 procedure Write_Unit_Info 1164 (Unit_Num : Unit_Number_Type; 1165 Item : Node_Id; 1166 Prefix : String := ""; 1167 Withs : Boolean := False) 1168 is 1169 begin 1170 Write_Str (Prefix); 1171 Write_Unit_Name (Unit_Name (Unit_Num)); 1172 Write_Str (", unit "); 1173 Write_Int (Int (Unit_Num)); 1174 Write_Str (", "); 1175 Write_Int (Int (Item)); 1176 Write_Str ("="); 1177 Write_Str (Node_Kind'Image (Nkind (Item))); 1178 1179 if Item /= Original_Node (Item) then 1180 Write_Str (", orig = "); 1181 Write_Int (Int (Original_Node (Item))); 1182 Write_Str ("="); 1183 Write_Str (Node_Kind'Image (Nkind (Original_Node (Item)))); 1184 end if; 1185 1186 Write_Eol; 1187 1188 -- Skip the rest if we're not supposed to print the withs 1189 1190 if not Withs then 1191 return; 1192 end if; 1193 1194 declare 1195 Context_Item : Node_Id; 1196 1197 begin 1198 Context_Item := First (Context_Items (Cunit (Unit_Num))); 1199 while Present (Context_Item) 1200 and then (Nkind (Context_Item) /= N_With_Clause 1201 or else Limited_Present (Context_Item)) 1202 loop 1203 Context_Item := Next (Context_Item); 1204 end loop; 1205 1206 if Present (Context_Item) then 1207 Indent; 1208 Write_Line ("withs:"); 1209 Indent; 1210 1211 while Present (Context_Item) loop 1212 if Nkind (Context_Item) = N_With_Clause 1213 and then not Limited_Present (Context_Item) 1214 then 1215 pragma Assert (Present (Library_Unit (Context_Item))); 1216 Write_Unit_Name 1217 (Unit_Name 1218 (Get_Cunit_Unit_Number (Library_Unit (Context_Item)))); 1219 1220 if Implicit_With (Context_Item) then 1221 Write_Str (" -- implicit"); 1222 end if; 1223 1224 Write_Eol; 1225 end if; 1226 1227 Context_Item := Next (Context_Item); 1228 end loop; 1229 1230 Outdent; 1231 Write_Line ("end withs"); 1232 Outdent; 1233 end if; 1234 end; 1235 end Write_Unit_Info; 1236 1237end Lib; 1238