gcc/ada/prj-nmsc.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                             P R J . N M S C                              --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --          Copyright (C) 2000-2004 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 2,  or (at your option) any later ver- --
  14 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  15 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  16 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  17 -- for  more details.  You should have  received  a copy of the GNU General --
  18 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  19 -- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
  20 -- MA 02111-1307, USA.                                                      --
  21 --                                                                          --
  22 -- GNAT was originally developed  by the GNAT team at  New York University. --
  23 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  24 --                                                                          --
  25 ------------------------------------------------------------------------------
  26
  27 with Err_Vars; use Err_Vars;
  28 with Fmap;     use Fmap;
  29 with Hostparm;
  30 with MLib.Tgt;
  31 with Namet;    use Namet;
  32 with Osint;    use Osint;
  33 with Output;   use Output;
  34 with MLib.Tgt; use MLib.Tgt;
  35 with Prj.Com;  use Prj.Com;
  36 with Prj.Env;  use Prj.Env;
  37 with Prj.Err;
  38 with Prj.Util; use Prj.Util;
  39 with Sinput.P;
  40 with Snames;   use Snames;
  41 with Table;    use Table;
  42 with Types;    use Types;
  43
  44 with Ada.Characters.Handling;    use Ada.Characters.Handling;
  45 with Ada.Strings;                use Ada.Strings;
  46 with Ada.Strings.Fixed;          use Ada.Strings.Fixed;
  47 with Ada.Strings.Maps.Constants; use Ada.Strings.Maps.Constants;
  48
  49 with GNAT.Case_Util;             use GNAT.Case_Util;
  50 with GNAT.Directory_Operations;  use GNAT.Directory_Operations;
  51 with GNAT.OS_Lib;                use GNAT.OS_Lib;
  52 with GNAT.HTable;
  53
  54 package body Prj.Nmsc is
  55
  56    Error_Report : Put_Line_Access := null;
  57    --  Set to point to error reporting procedure
  58
  59    ALI_Suffix   : constant String := ".ali";
  60    --  File suffix for ali files
  61
  62    Object_Suffix : constant String := Get_Object_Suffix.all;
  63    --  File suffix for object files
  64
  65    type Name_Location is record
  66       Name     : Name_Id;
  67       Location : Source_Ptr;
  68       Found    : Boolean := False;
  69    end record;
  70    --  Information about file names found in string list attribute
  71    --  Source_Files or in a source list file, stored in hash table
  72    --  Source_Names, used by procedure Get_Path_Names_And_Record_Sources.
  73
  74    No_Name_Location : constant Name_Location :=
  75      (Name => No_Name, Location => No_Location, Found => False);
  76
  77    package Source_Names is new GNAT.HTable.Simple_HTable
  78      (Header_Num => Header_Num,
  79       Element    => Name_Location,
  80       No_Element => No_Name_Location,
  81       Key        => Name_Id,
  82       Hash       => Hash,
  83       Equal      => "=");
  84    --  Hash table to store file names found in string list attribute
  85    --  Source_Files or in a source list file, stored in hash table
  86    --  Source_Names, used by procedure Get_Path_Names_And_Record_Sources.
  87
  88    package Recursive_Dirs is new GNAT.HTable.Simple_HTable
  89      (Header_Num => Header_Num,
  90       Element    => Boolean,
  91       No_Element => False,
  92       Key        => Name_Id,
  93       Hash       => Hash,
  94       Equal      => "=");
  95    --  Hash table to store recursive source directories, to avoid looking
  96    --  several times, and to avoid cycles that may be introduced by symbolic
  97    --  links.
  98
  99    type Ada_Naming_Exception_Id is new Nat;
 100    No_Ada_Naming_Exception : constant Ada_Naming_Exception_Id := 0;
 101
 102    type Unit_Info is record
 103       Kind : Spec_Or_Body;
 104       Unit : Name_Id;
 105       Next : Ada_Naming_Exception_Id := No_Ada_Naming_Exception;
 106    end record;
 107    --  No_Unit : constant Unit_Info :=
 108    --              (Specification, No_Name, No_Ada_Naming_Exception);
 109
 110    package Ada_Naming_Exception_Table is new Table.Table
 111      (Table_Component_Type => Unit_Info,
 112       Table_Index_Type     => Ada_Naming_Exception_Id,
 113       Table_Low_Bound      => 1,
 114       Table_Initial        => 20,
 115       Table_Increment      => 100,
 116       Table_Name           => "Prj.Nmsc.Ada_Naming_Exception_Table");
 117
 118    package Ada_Naming_Exceptions is new GNAT.HTable.Simple_HTable
 119      (Header_Num => Header_Num,
 120       Element    => Ada_Naming_Exception_Id,
 121       No_Element => No_Ada_Naming_Exception,
 122       Key        => Name_Id,
 123       Hash       => Hash,
 124       Equal      => "=");
 125    --  A hash table to store naming exceptions for Ada. For each file name
 126    --  there is one or several unit in table Ada_Naming_Exception_Table.
 127
 128    function Hash (Unit : Unit_Info) return Header_Num;
 129
 130    type Name_And_Index is record
 131       Name  : Name_Id := No_Name;
 132       Index : Int     := 0;
 133    end record;
 134    No_Name_And_Index : constant Name_And_Index :=
 135                          (Name => No_Name, Index => 0);
 136
 137    package Reverse_Ada_Naming_Exceptions is new GNAT.HTable.Simple_HTable
 138      (Header_Num => Header_Num,
 139       Element    => Name_And_Index,
 140       No_Element => No_Name_And_Index,
 141       Key        => Unit_Info,
 142       Hash       => Hash,
 143       Equal      => "=");
 144    --  A table to check if a unit with an exceptional name will hide
 145    --  a source with a file name following the naming convention.
 146
 147    function ALI_File_Name (Source : String) return String;
 148    --  Return the ALI file name corresponding to a source
 149
 150    procedure Check_Ada_Name
 151      (Name : String;
 152       Unit : out Name_Id);
 153    --  Check that a name is a valid Ada unit name
 154
 155    procedure Check_Naming_Scheme
 156      (Data    : in out Project_Data;
 157       Project : Project_Id);
 158    --  Check the naming scheme part of Data
 159
 160    procedure Check_Ada_Naming_Scheme_Validity
 161      (Project : Project_Id;
 162       Naming  : Naming_Data);
 163    --  Check that the package Naming is correct
 164
 165    procedure Check_For_Source
 166      (File_Name        : Name_Id;
 167       Path_Name        : Name_Id;
 168       Project          : Project_Id;
 169       Data             : in out Project_Data;
 170       Location         : Source_Ptr;
 171       Language         : Language_Index;
 172       Suffix           : String;
 173       Naming_Exception : Boolean);
 174    --  Check if a file in a source directory is a source for a specific
 175    --  language other than Ada. Comments required for parameters ???
 176
 177    procedure Check_If_Externally_Built
 178      (Project : Project_Id;
 179       Data    : in out Project_Data);
 180    --  ??? comment required
 181
 182    procedure Check_Library_Attributes
 183      (Project   : Project_Id;
 184       Data      : in out Project_Data);
 185    --  ??? comment required
 186
 187    procedure Check_Package_Naming
 188      (Project : Project_Id;
 189       Data    : in out Project_Data);
 190    --  ??? comment required
 191
 192    procedure Check_Programming_Languages (Data : in out Project_Data);
 193    --  ??? comment required
 194
 195    function Check_Project
 196      (P            : Project_Id;
 197       Root_Project : Project_Id;
 198       Extending    : Boolean) return Boolean;
 199    --  Returns True if P is Root_Project or, if Extending is True, a project
 200    --  extended by Root_Project.
 201
 202    procedure Check_Stand_Alone_Library
 203      (Project   : Project_Id;
 204       Data      : in out Project_Data;
 205       Extending : Boolean);
 206
 207    function Compute_Directory_Last (Dir : String) return Natural;
 208    --  Return the index of the last significant character in Dir. This is used
 209    --  to avoid duplicates '/' at the end of directory names
 210
 211    function Body_Suffix_Of
 212      (Language : Language_Index; In_Project : Project_Data)
 213       return String;
 214
 215    procedure Error_Msg
 216      (Project       : Project_Id;
 217       Msg           : String;
 218       Flag_Location : Source_Ptr);
 219    --  Output an error message. If Error_Report is null, simply call
 220    --  Prj.Err.Error_Msg. Otherwise, disregard Flag_Location and use
 221    --  Error_Report.
 222
 223    procedure Find_Sources
 224      (Project      : Project_Id;
 225       Data         : in out Project_Data;
 226       For_Language : Language_Index;
 227       Follow_Links : Boolean := False);
 228    --  Find all the sources in all of the source directories of a project for
 229    --  a specified language.
 230
 231    procedure Free_Ada_Naming_Exceptions;
 232    --  Free the internal hash tables used for checking naming exceptions
 233
 234    procedure Get_Directories
 235      (Project : Project_Id;
 236       Data    : in out Project_Data);
 237    --  Get the object directory, the exec directory and the source directories
 238    --  of a project.
 239
 240    procedure Get_Mains (Project : Project_Id; Data : in out Project_Data);
 241    --  Get the mains of a project from attribute Main, if it exists, and put
 242    --  them in the project data.
 243
 244    procedure Get_Sources_From_File
 245      (Path     : String;
 246       Location : Source_Ptr;
 247       Project  : Project_Id);
 248    --  Get the list of sources from a text file and put them in hash table
 249    --  Source_Names.
 250
 251    procedure Get_Unit
 252      (Canonical_File_Name : Name_Id;
 253       Naming              : Naming_Data;
 254       Exception_Id        : out Ada_Naming_Exception_Id;
 255       Unit_Name           : out Name_Id;
 256       Unit_Kind           : out Spec_Or_Body;
 257       Needs_Pragma        : out Boolean);
 258    --  Find out, from a file name, the unit name, the unit kind and if a
 259    --  specific SFN pragma is needed. If the file name corresponds to no
 260    --  unit, then Unit_Name will be No_Name. If the file is a multi-unit source
 261    --  or an exception to the naming scheme, then Exception_Id is set to
 262    --  the unit or units that the source contains.
 263
 264    function Is_Illegal_Suffix
 265      (Suffix                          : String;
 266       Dot_Replacement_Is_A_Single_Dot : Boolean) return Boolean;
 267    --  Returns True if the string Suffix cannot be used as
 268    --  a spec suffix, a body suffix or a separate suffix.
 269
 270    procedure Locate_Directory
 271      (Name    : Name_Id;
 272       Parent  : Name_Id;
 273       Dir     : out Name_Id;
 274       Display : out Name_Id);
 275    --  Locate a directory (returns No_Name for Dir and Display if directory
 276    --  does not exist). Name is the directory name. Parent is the root
 277    --  directory, if Name is a relative path name. Dir is the canonical case
 278    --  path name of the directory, Display is the directory path name for
 279    --  display purposes.
 280
 281    procedure Look_For_Sources
 282      (Project      : Project_Id;
 283       Data         : in out Project_Data;
 284       Follow_Links : Boolean);
 285    --  Comment required ???
 286
 287    function Path_Name_Of
 288      (File_Name : Name_Id;
 289       Directory : Name_Id) return String;
 290    --  Returns the path name of a (non project) file.
 291    --  Returns an empty string if file cannot be found.
 292
 293    procedure Prepare_Ada_Naming_Exceptions
 294      (List : Array_Element_Id;
 295       Kind : Spec_Or_Body);
 296    --  Prepare the internal hash tables used for checking naming exceptions
 297    --  for Ada. Insert all elements of List in the tables.
 298
 299    function Project_Extends
 300      (Extending : Project_Id;
 301       Extended  : Project_Id) return Boolean;
 302    --  Returns True if Extending is extending Extended either directly or
 303    --  indirectly.
 304
 305    procedure Record_Ada_Source
 306      (File_Name       : Name_Id;
 307       Path_Name       : Name_Id;
 308       Project         : Project_Id;
 309       Data            : in out Project_Data;
 310       Location        : Source_Ptr;
 311       Current_Source  : in out String_List_Id;
 312       Source_Recorded : in out Boolean;
 313       Follow_Links    : Boolean);
 314    --  Put a unit in the list of units of a project, if the file name
 315    --  corresponds to a valid unit name.
 316
 317    procedure Record_Other_Sources
 318      (Project           : Project_Id;
 319       Data              : in out Project_Data;
 320       Language          : Language_Index;
 321       Naming_Exceptions : Boolean);
 322    --  Record the sources of a language in a project.
 323    --  When Naming_Exceptions is True, mark the found sources as such, to
 324    --  later remove those that are not named in a list of sources.
 325
 326    procedure Show_Source_Dirs (Project : Project_Id);
 327    --  List all the source directories of a project
 328
 329    function Suffix_For
 330      (Language : Language_Index;
 331       Naming   : Naming_Data) return Name_Id;
 332    --  Get the suffix for the source of a language from a package naming.
 333    --  If not specified, return the default for the language.
 334
 335    procedure Warn_If_Not_Sources
 336      (Project     : Project_Id;
 337       Conventions : Array_Element_Id;
 338       Specs       : Boolean;
 339       Extending   : Boolean);
 340    --  Check that individual naming conventions apply to immediate
 341    --  sources of the project; if not, issue a warning.
 342
 343    -------------------
 344    -- ALI_File_Name --
 345    -------------------
 346
 347    function ALI_File_Name (Source : String) return String is
 348    begin
 349       --  If the source name has an extension, then replace it with
 350       --  the ALI suffix.
 351
 352       for Index in reverse Source'First + 1 .. Source'Last loop
 353          if Source (Index) = '.' then
 354             return Source (Source'First .. Index - 1) & ALI_Suffix;
 355          end if;
 356       end loop;
 357
 358       --  If there is no dot, or if it is the first character, just add the
 359       --  ALI suffix.
 360
 361       return Source & ALI_Suffix;
 362    end ALI_File_Name;
 363
 364    -----------
 365    -- Check --
 366    -----------
 367
 368    procedure Check
 369      (Project      : Project_Id;
 370       Report_Error : Put_Line_Access;
 371       Follow_Links : Boolean)
 372    is
 373       Data         : Project_Data := Projects.Table (Project);
 374
 375       Extending    : Boolean := False;
 376
 377    begin
 378       Error_Report := Report_Error;
 379
 380       Recursive_Dirs.Reset;
 381
 382       --  Object, exec and source directories
 383
 384       Get_Directories (Project, Data);
 385
 386       --  Get the programming languages
 387
 388       Check_Programming_Languages (Data);
 389
 390       --  Library attributes
 391
 392       Check_Library_Attributes (Project, Data);
 393
 394       Check_If_Externally_Built (Project, Data);
 395
 396       if Current_Verbosity = High then
 397          Show_Source_Dirs (Project);
 398       end if;
 399
 400       Check_Package_Naming (Project, Data);
 401
 402       Extending := Data.Extends /= No_Project;
 403
 404       Check_Naming_Scheme (Data, Project);
 405
 406       Prepare_Ada_Naming_Exceptions (Data.Naming.Bodies, Body_Part);
 407       Prepare_Ada_Naming_Exceptions (Data.Naming.Specs,  Specification);
 408
 409       --  Find the sources
 410
 411       if Data.Source_Dirs /= Nil_String then
 412          Look_For_Sources (Project, Data, Follow_Links);
 413       end if;
 414
 415       if Data.Ada_Sources_Present then
 416
 417          --  Check that all individual naming conventions apply to sources of
 418          --  this project file.
 419
 420          Warn_If_Not_Sources
 421            (Project, Data.Naming.Bodies,
 422             Specs     => False,
 423             Extending => Extending);
 424          Warn_If_Not_Sources
 425            (Project, Data.Naming.Specs,
 426             Specs     => True,
 427             Extending => Extending);
 428       end if;
 429
 430
 431       --  If it is a library project file, check if it is a standalone library
 432
 433       if Data.Library then
 434          Check_Stand_Alone_Library (Project, Data, Extending);
 435       end if;
 436
 437       --  Put the list of Mains, if any, in the project data
 438
 439       Get_Mains (Project, Data);
 440
 441       --  Update the project data in the Projects table
 442
 443       Projects.Table (Project) := Data;
 444
 445       Free_Ada_Naming_Exceptions;
 446    end Check;
 447
 448    --------------------
 449    -- Check_Ada_Name --
 450    --------------------
 451
 452    procedure Check_Ada_Name
 453      (Name : String;
 454       Unit : out Name_Id)
 455    is
 456       The_Name        : String := Name;
 457       Real_Name       : Name_Id;
 458       Need_Letter     : Boolean := True;
 459       Last_Underscore : Boolean := False;
 460       OK              : Boolean := The_Name'Length > 0;
 461
 462    begin
 463       To_Lower (The_Name);
 464
 465       Name_Len := The_Name'Length;
 466       Name_Buffer (1 .. Name_Len) := The_Name;
 467       Real_Name := Name_Find;
 468
 469       --  Check first that the given name is not an Ada reserved word
 470
 471       if Get_Name_Table_Byte (Real_Name) /= 0
 472         and then Real_Name /= Name_Project
 473         and then Real_Name /= Name_Extends
 474         and then Real_Name /= Name_External
 475       then
 476          Unit := No_Name;
 477
 478          if Current_Verbosity = High then
 479             Write_Str (The_Name);
 480             Write_Line (" is an Ada reserved word.");
 481          end if;
 482
 483          return;
 484       end if;
 485
 486       for Index in The_Name'Range loop
 487          if Need_Letter then
 488
 489             --  We need a letter (at the beginning, and following a dot),
 490             --  but we don't have one.
 491
 492             if Is_Letter (The_Name (Index)) then
 493                Need_Letter := False;
 494
 495             else
 496                OK := False;
 497
 498                if Current_Verbosity = High then
 499                   Write_Int  (Types.Int (Index));
 500                   Write_Str  (": '");
 501                   Write_Char (The_Name (Index));
 502                   Write_Line ("' is not a letter.");
 503                end if;
 504
 505                exit;
 506             end if;
 507
 508          elsif Last_Underscore
 509            and then (The_Name (Index) = '_' or else The_Name (Index) = '.')
 510          then
 511             --  Two underscores are illegal, and a dot cannot follow
 512             --  an underscore.
 513
 514             OK := False;
 515
 516             if Current_Verbosity = High then
 517                Write_Int  (Types.Int (Index));
 518                Write_Str  (": '");
 519                Write_Char (The_Name (Index));
 520                Write_Line ("' is illegal here.");
 521             end if;
 522
 523             exit;
 524
 525          elsif The_Name (Index) = '.' then
 526
 527             --  We need a letter after a dot
 528
 529             Need_Letter := True;
 530
 531          elsif The_Name (Index) = '_' then
 532             Last_Underscore := True;
 533
 534          else
 535             --  We need an letter or a digit
 536
 537             Last_Underscore := False;
 538
 539             if not Is_Alphanumeric (The_Name (Index)) then
 540                OK := False;
 541
 542                if Current_Verbosity = High then
 543                   Write_Int  (Types.Int (Index));
 544                   Write_Str  (": '");
 545                   Write_Char (The_Name (Index));
 546                   Write_Line ("' is not alphanumeric.");
 547                end if;
 548
 549                exit;
 550             end if;
 551          end if;
 552       end loop;
 553
 554       --  Cannot end with an underscore or a dot
 555
 556       OK := OK and then not Need_Letter and then not Last_Underscore;
 557
 558       if OK then
 559          Unit := Real_Name;
 560
 561       else
 562          --  Signal a problem with No_Name
 563
 564          Unit := No_Name;
 565       end if;
 566    end Check_Ada_Name;
 567
 568    --------------------------------------
 569    -- Check_Ada_Naming_Scheme_Validity --
 570    --------------------------------------
 571
 572    procedure Check_Ada_Naming_Scheme_Validity
 573      (Project : Project_Id;
 574       Naming  : Naming_Data)
 575    is
 576    begin
 577       --  Only check if we are not using the standard naming scheme
 578
 579       if Naming /= Standard_Naming_Data then
 580          declare
 581             Dot_Replacement       : constant String :=
 582                                      Get_Name_String
 583                                        (Naming.Dot_Replacement);
 584
 585             Spec_Suffix : constant String :=
 586                                      Get_Name_String
 587                                        (Naming.Ada_Spec_Suffix);
 588
 589             Body_Suffix : constant String :=
 590                                      Get_Name_String
 591                                        (Naming.Ada_Body_Suffix);
 592
 593             Separate_Suffix       : constant String :=
 594                                      Get_Name_String
 595                                        (Naming.Separate_Suffix);
 596
 597          begin
 598             --  Dot_Replacement cannot
 599             --   - be empty
 600             --   - start or end with an alphanumeric
 601             --   - be a single '_'
 602             --   - start with an '_' followed by an alphanumeric
 603             --   - contain a '.' except if it is "."
 604
 605             if Dot_Replacement'Length = 0
 606               or else Is_Alphanumeric
 607                         (Dot_Replacement (Dot_Replacement'First))
 608               or else Is_Alphanumeric
 609                         (Dot_Replacement (Dot_Replacement'Last))
 610               or else (Dot_Replacement (Dot_Replacement'First) = '_'
 611                         and then
 612                         (Dot_Replacement'Length = 1
 613                           or else
 614                            Is_Alphanumeric
 615                              (Dot_Replacement (Dot_Replacement'First + 1))))
 616               or else (Dot_Replacement'Length > 1
 617                          and then
 618                            Index (Source => Dot_Replacement,
 619                                   Pattern => ".") /= 0)
 620             then
 621                Error_Msg
 622                  (Project,
 623                   '"' & Dot_Replacement &
 624                   """ is illegal for Dot_Replacement.",
 625                   Naming.Dot_Repl_Loc);
 626             end if;
 627
 628             --  Suffixes cannot
 629             --   - be empty
 630
 631             if Is_Illegal_Suffix
 632                  (Spec_Suffix, Dot_Replacement = ".")
 633             then
 634                Err_Vars.Error_Msg_Name_1 := Naming.Ada_Spec_Suffix;
 635                Error_Msg
 636                  (Project,
 637                   "{ is illegal for Spec_Suffix",
 638                   Naming.Spec_Suffix_Loc);
 639             end if;
 640
 641             if Is_Illegal_Suffix
 642                  (Body_Suffix, Dot_Replacement = ".")
 643             then
 644                Err_Vars.Error_Msg_Name_1 := Naming.Ada_Body_Suffix;
 645                Error_Msg
 646                  (Project,
 647                   "{ is illegal for Body_Suffix",
 648                   Naming.Body_Suffix_Loc);
 649             end if;
 650
 651             if Body_Suffix /= Separate_Suffix then
 652                if Is_Illegal_Suffix
 653                     (Separate_Suffix, Dot_Replacement = ".")
 654                then
 655                   Err_Vars.Error_Msg_Name_1 := Naming.Separate_Suffix;
 656                   Error_Msg
 657                     (Project,
 658                      "{ is illegal for Separate_Suffix",
 659                      Naming.Sep_Suffix_Loc);
 660                end if;
 661             end if;
 662
 663             --  Spec_Suffix cannot have the same termination as
 664             --  Body_Suffix or Separate_Suffix
 665
 666             if Spec_Suffix'Length <= Body_Suffix'Length
 667               and then
 668                 Body_Suffix (Body_Suffix'Last -
 669                              Spec_Suffix'Length + 1 ..
 670                              Body_Suffix'Last) = Spec_Suffix
 671             then
 672                Error_Msg
 673                  (Project,
 674                   "Body_Suffix (""" &
 675                   Body_Suffix &
 676                   """) cannot end with" &
 677                   " Spec_Suffix  (""" &
 678                   Spec_Suffix & """).",
 679                   Naming.Body_Suffix_Loc);
 680             end if;
 681
 682             if Body_Suffix /= Separate_Suffix
 683               and then Spec_Suffix'Length <= Separate_Suffix'Length
 684               and then
 685                 Separate_Suffix
 686                   (Separate_Suffix'Last - Spec_Suffix'Length + 1
 687                     ..
 688                    Separate_Suffix'Last) = Spec_Suffix
 689             then
 690                Error_Msg
 691                  (Project,
 692                   "Separate_Suffix (""" &
 693                   Separate_Suffix &
 694                   """) cannot end with" &
 695                   " Spec_Suffix (""" &
 696                   Spec_Suffix & """).",
 697                   Naming.Sep_Suffix_Loc);
 698             end if;
 699          end;
 700       end if;
 701    end Check_Ada_Naming_Scheme_Validity;
 702
 703    ----------------------
 704    -- Check_For_Source --
 705    ----------------------
 706
 707    procedure Check_For_Source
 708      (File_Name        : Name_Id;
 709       Path_Name        : Name_Id;
 710       Project          : Project_Id;
 711       Data             : in out Project_Data;
 712       Location         : Source_Ptr;
 713       Language         : Language_Index;
 714       Suffix           : String;
 715       Naming_Exception : Boolean)
 716    is
 717       Name : String := Get_Name_String (File_Name);
 718       Real_Location : Source_Ptr := Location;
 719
 720    begin
 721       Canonical_Case_File_Name (Name);
 722
 723       --  A file is a source of a language if Naming_Exception is True (case
 724       --  of naming exceptions) or if its file name ends with the suffix.
 725
 726       if Naming_Exception or else
 727         (Name'Length > Suffix'Length and then
 728          Name (Name'Last - Suffix'Length + 1 .. Name'Last) = Suffix)
 729       then
 730          if Real_Location = No_Location then
 731             Real_Location := Data.Location;
 732          end if;
 733
 734          declare
 735             Path : String := Get_Name_String (Path_Name);
 736
 737             Path_Id : Name_Id;
 738             --  The path name id (in canonical case)
 739
 740             File_Id : Name_Id;
 741             --  The file name id (in canonical case)
 742
 743             Obj_Id : Name_Id;
 744             --  The object file name
 745
 746             Obj_Path_Id : Name_Id;
 747             --  The object path name
 748
 749             Dep_Id : Name_Id;
 750             --  The dependency file name
 751
 752             Dep_Path_Id : Name_Id;
 753             --  The dependency path name
 754
 755             Dot_Pos : Natural := 0;
 756             --  Position of the last dot in Name
 757
 758             Source    : Other_Source;
 759             Source_Id : Other_Source_Id := Data.First_Other_Source;
 760
 761          begin
 762             Canonical_Case_File_Name (Path);
 763
 764             --  Get the file name id
 765
 766             Name_Len := Name'Length;
 767             Name_Buffer (1 .. Name_Len) := Name;
 768             File_Id := Name_Find;
 769
 770             --  Get the path name id
 771
 772             Name_Len := Path'Length;
 773             Name_Buffer (1 .. Name_Len) := Path;
 774             Path_Id := Name_Find;
 775
 776             --  Find the position of the last dot
 777
 778             for J in reverse Name'Range loop
 779                if Name (J) = '.' then
 780                   Dot_Pos := J;
 781                   exit;
 782                end if;
 783             end loop;
 784
 785             if Dot_Pos <= Name'First then
 786                Dot_Pos := Name'Last + 1;
 787             end if;
 788
 789             --  Compute the object file name
 790
 791             Get_Name_String (File_Id);
 792             Name_Len := Dot_Pos - Name'First;
 793
 794             for J in Object_Suffix'Range loop
 795                Name_Len := Name_Len + 1;
 796                Name_Buffer (Name_Len) := Object_Suffix (J);
 797             end loop;
 798
 799             Obj_Id := Name_Find;
 800
 801             --  Compute the object path name
 802
 803             Get_Name_String (Data.Object_Directory);
 804
 805             if Name_Buffer (Name_Len) /= Directory_Separator and then
 806               Name_Buffer (Name_Len) /= '/'
 807             then
 808                Name_Len := Name_Len + 1;
 809                Name_Buffer (Name_Len) := Directory_Separator;
 810             end if;
 811
 812             Add_Str_To_Name_Buffer (Get_Name_String (Obj_Id));
 813             Obj_Path_Id := Name_Find;
 814
 815             --  Compute the dependency file name
 816
 817             Get_Name_String (File_Id);
 818             Name_Len := Dot_Pos - Name'First + 1;
 819             Name_Buffer (Name_Len) := '.';
 820             Name_Len := Name_Len + 1;
 821             Name_Buffer (Name_Len) := 'd';
 822             Dep_Id := Name_Find;
 823
 824             --  Compute the dependency path name
 825
 826             Get_Name_String (Data.Object_Directory);
 827
 828             if Name_Buffer (Name_Len) /= Directory_Separator and then
 829               Name_Buffer (Name_Len) /= '/'
 830             then
 831                Name_Len := Name_Len + 1;
 832                Name_Buffer (Name_Len) := Directory_Separator;
 833             end if;
 834
 835             Add_Str_To_Name_Buffer (Get_Name_String (Dep_Id));
 836             Dep_Path_Id := Name_Find;
 837
 838             --  Check if source is already in the list of source for this
 839             --  project: it may have already been specified as a naming
 840             --  exception for the same language or an other language, or
 841             --  they may be two identical file names in different source
 842             --  directories.
 843
 844             while Source_Id /= No_Other_Source loop
 845                Source := Other_Sources.Table (Source_Id);
 846                Source_Id := Source.Next;
 847
 848                if Source.File_Name = File_Id then
 849
 850                   --  Two sources of different languages cannot have the same
 851                   --  file name.
 852
 853                   if Source.Language /= Language then
 854                      Error_Msg_Name_1 := File_Name;
 855                      Error_Msg
 856                        (Project,
 857                         "{ cannot be a source of several languages",
 858                         Real_Location);
 859                      return;
 860
 861                   --  No problem if a file has already been specified as
 862                   --  a naming exception of this language.
 863
 864                   elsif Source.Path_Name = Path_Id then
 865
 866                      --  Reset the naming exception flag, if this is not a
 867                      --  naming exception.
 868
 869                      if not Naming_Exception then
 870                         Other_Sources.Table (Source_Id).Naming_Exception :=
 871                           False;
 872                      end if;
 873
 874                      return;
 875
 876                   --  There are several files with the same names, but the
 877                   --  order of the source directories is known (no /**):
 878                   --  only the first one encountered is kept, the other ones
 879                   --  are ignored.
 880
 881                   elsif Data.Known_Order_Of_Source_Dirs then
 882                      return;
 883
 884                   --  But it is an error if the order of the source directories
 885                   --  is not known.
 886
 887                   else
 888                      Error_Msg_Name_1 := File_Name;
 889                      Error_Msg
 890                        (Project,
 891                         "{ is found in several source directories",
 892                         Real_Location);
 893                      return;
 894                   end if;
 895
 896                --  Two sources with different file names cannot have the same
 897                --  object file name.
 898
 899                elsif Source.Object_Name = Obj_Id then
 900                   Error_Msg_Name_1 := File_Id;
 901                   Error_Msg_Name_2 := Source.File_Name;
 902                   Error_Msg_Name_3 := Obj_Id;
 903                   Error_Msg
 904                        (Project,
 905                         "{ and { have the same object file {",
 906                         Real_Location);
 907                      return;
 908                end if;
 909             end loop;
 910
 911             if Current_Verbosity = High then
 912                Write_Str ("      found ");
 913                Display_Language_Name (Language);
 914                Write_Str (" source """);
 915                Write_Str (Get_Name_String (File_Name));
 916                Write_Line ("""");
 917                Write_Str ("      object path = ");
 918                Write_Line (Get_Name_String (Obj_Path_Id));
 919             end if;
 920
 921             --  Create the Other_Source record
 922
 923             Source :=
 924               (Language         => Language,
 925                File_Name        => File_Id,
 926                Path_Name        => Path_Id,
 927                Source_TS        => File_Stamp (Path_Id),
 928                Object_Name      => Obj_Id,
 929                Object_Path      => Obj_Path_Id,
 930                Object_TS        => File_Stamp (Obj_Path_Id),
 931                Dep_Name         => Dep_Id,
 932                Dep_Path         => Dep_Path_Id,
 933                Dep_TS           => File_Stamp (Dep_Path_Id),
 934                Naming_Exception => Naming_Exception,
 935                Next             => No_Other_Source);
 936
 937             --  And add it to the Other_Sources table
 938
 939             Other_Sources.Increment_Last;
 940             Other_Sources.Table (Other_Sources.Last) := Source;
 941
 942             --  There are sources of languages other than Ada in this project
 943
 944             Data.Other_Sources_Present := True;
 945
 946             --  And there are sources of this language in this project
 947
 948             Set (Language, True, Data);
 949
 950             --  Add this source to the list of sources of languages other than
 951             --  Ada of the project.
 952
 953             if Data.First_Other_Source = No_Other_Source then
 954                Data.First_Other_Source := Other_Sources.Last;
 955
 956             else
 957                Other_Sources.Table (Data.Last_Other_Source).Next :=
 958                  Other_Sources.Last;
 959             end if;
 960
 961             Data.Last_Other_Source  := Other_Sources.Last;
 962          end;
 963       end if;
 964    end Check_For_Source;
 965
 966    -------------------------------
 967    -- Check_If_Externally_Built --
 968    -------------------------------
 969
 970    procedure Check_If_Externally_Built
 971      (Project : Project_Id; Data : in out Project_Data)
 972    is
 973       Externally_Built : constant Variable_Value :=
 974                            Util.Value_Of
 975                              (Name_Externally_Built, Data.Decl.Attributes);
 976
 977    begin
 978       if not Externally_Built.Default then
 979          Get_Name_String (Externally_Built.Value);
 980          To_Lower (Name_Buffer (1 .. Name_Len));
 981
 982          if Name_Buffer (1 .. Name_Len) = "true" then
 983             Data.Externally_Built := True;
 984
 985          elsif Name_Buffer (1 .. Name_Len) /= "false" then
 986             Error_Msg (Project,
 987                        "Externally_Built may only be true or false",
 988                        Externally_Built.Location);
 989          end if;
 990       end if;
 991
 992       if Current_Verbosity = High then
 993          Write_Str ("Project is ");
 994
 995          if not Data.Externally_Built then
 996             Write_Str ("not ");
 997          end if;
 998
 999          Write_Line ("externally built.");
1000       end if;
1001    end Check_If_Externally_Built;
1002
1003    -----------------------------
1004    -- Check_Naming_Scheme --
1005    -----------------------------
1006
1007    procedure Check_Naming_Scheme
1008      (Data    : in out Project_Data;
1009       Project : Project_Id)
1010    is
1011       Naming_Id : constant Package_Id :=
1012                     Util.Value_Of (Name_Naming, Data.Decl.Packages);
1013
1014       Naming : Package_Element;
1015
1016       procedure Check_Unit_Names (List : Array_Element_Id);
1017       --  Check that a list of unit names contains only valid names
1018
1019       ----------------------
1020       -- Check_Unit_Names --
1021       ----------------------
1022
1023       procedure Check_Unit_Names (List : Array_Element_Id) is
1024          Current   : Array_Element_Id := List;
1025          Element   : Array_Element;
1026          Unit_Name : Name_Id;
1027
1028       begin
1029          --  Loop through elements of the string list
1030
1031          while Current /= No_Array_Element loop
1032             Element := Array_Elements.Table (Current);
1033
1034             --  Put file name in canonical case
1035
1036             Get_Name_String (Element.Value.Value);
1037             Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
1038             Element.Value.Value := Name_Find;
1039
1040             --  Check that it contains a valid unit name
1041
1042             Get_Name_String (Element.Index);
1043             Check_Ada_Name (Name_Buffer (1 .. Name_Len), Unit_Name);
1044
1045             if Unit_Name = No_Name then
1046                Err_Vars.Error_Msg_Name_1 := Element.Index;
1047                Error_Msg
1048                  (Project,
1049                   "{ is not a valid unit name.",
1050                   Element.Value.Location);
1051
1052             else
1053                if Current_Verbosity = High then
1054                   Write_Str ("    Unit (""");
1055                   Write_Str (Get_Name_String (Unit_Name));
1056                   Write_Line (""")");
1057                end if;
1058
1059                Element.Index := Unit_Name;
1060                Array_Elements.Table (Current) := Element;
1061             end if;
1062
1063             Current := Element.Next;
1064          end loop;
1065       end Check_Unit_Names;
1066
1067    --  Start of processing for Check_Naming_Scheme
1068
1069    begin
1070       --  If there is a package Naming, we will put in Data.Naming what is in
1071       --  this package Naming.
1072
1073       if Naming_Id /= No_Package then
1074          Naming := Packages.Table (Naming_Id);
1075
1076          if Current_Verbosity = High then
1077             Write_Line ("Checking ""Naming"" for Ada.");
1078          end if;
1079
1080          declare
1081             Bodies : constant Array_Element_Id :=
1082                        Util.Value_Of (Name_Body, Naming.Decl.Arrays);
1083
1084             Specs : constant Array_Element_Id :=
1085                       Util.Value_Of (Name_Spec, Naming.Decl.Arrays);
1086
1087          begin
1088             if Bodies /= No_Array_Element then
1089
1090                --  We have elements in the array Body_Part
1091
1092                if Current_Verbosity = High then
1093                   Write_Line ("Found Bodies.");
1094                end if;
1095
1096                Data.Naming.Bodies := Bodies;
1097                Check_Unit_Names (Bodies);
1098
1099             else
1100                if Current_Verbosity = High then
1101                   Write_Line ("No Bodies.");
1102                end if;
1103             end if;
1104
1105             if Specs /= No_Array_Element then
1106
1107                --  We have elements in the array Specs
1108
1109                if Current_Verbosity = High then
1110                   Write_Line ("Found Specs.");
1111                end if;
1112
1113                Data.Naming.Specs := Specs;
1114                Check_Unit_Names (Specs);
1115
1116             else
1117                if Current_Verbosity = High then
1118                   Write_Line ("No Specs.");
1119                end if;
1120             end if;
1121          end;
1122
1123          --  We are now checking if variables Dot_Replacement, Casing,
1124          --  Spec_Suffix, Body_Suffix and/or Separate_Suffix
1125          --  exist.
1126
1127          --  For each variable, if it does not exist, we do nothing,
1128          --  because we already have the default.
1129
1130          --  Check Dot_Replacement
1131
1132          declare
1133             Dot_Replacement : constant Variable_Value :=
1134                                 Util.Value_Of
1135                                   (Name_Dot_Replacement,
1136                                    Naming.Decl.Attributes);
1137
1138          begin
1139             pragma Assert (Dot_Replacement.Kind = Single,
1140                            "Dot_Replacement is not a single string");
1141
1142             if not Dot_Replacement.Default then
1143                Get_Name_String (Dot_Replacement.Value);
1144
1145                if Name_Len = 0 then
1146                   Error_Msg
1147                     (Project,
1148                      "Dot_Replacement cannot be empty",
1149                      Dot_Replacement.Location);
1150
1151                else
1152                   Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
1153                   Data.Naming.Dot_Replacement := Name_Find;
1154                   Data.Naming.Dot_Repl_Loc := Dot_Replacement.Location;
1155                end if;
1156             end if;
1157          end;
1158
1159          if Current_Verbosity = High then
1160             Write_Str  ("  Dot_Replacement = """);
1161             Write_Str  (Get_Name_String (Data.Naming.Dot_Replacement));
1162             Write_Char ('"');
1163             Write_Eol;
1164          end if;
1165
1166          --  Check Casing
1167
1168          declare
1169             Casing_String : constant Variable_Value :=
1170                               Util.Value_Of
1171                                 (Name_Casing, Naming.Decl.Attributes);
1172
1173          begin
1174             pragma Assert (Casing_String.Kind = Single,
1175                            "Casing is not a single string");
1176
1177             if not Casing_String.Default then
1178                declare
1179                   Casing_Image : constant String :=
1180                                    Get_Name_String (Casing_String.Value);
1181                begin
1182                   declare
1183                      Casing_Value : constant Casing_Type :=
1184                                       Value (Casing_Image);
1185                   begin
1186                      --  Ignore Casing on platforms where file names are
1187                      --  case-insensitive.
1188
1189                      if not File_Names_Case_Sensitive then
1190                         Data.Naming.Casing := All_Lower_Case;
1191
1192                      else
1193                         Data.Naming.Casing := Casing_Value;
1194                      end if;
1195                   end;
1196
1197                exception
1198                   when Constraint_Error =>
1199                      if Casing_Image'Length = 0 then
1200                         Error_Msg
1201                           (Project,
1202                            "Casing cannot be an empty string",
1203                            Casing_String.Location);
1204
1205                      else
1206                         Name_Len := Casing_Image'Length;
1207                         Name_Buffer (1 .. Name_Len) := Casing_Image;
1208                         Err_Vars.Error_Msg_Name_1 := Name_Find;
1209                         Error_Msg
1210                           (Project,
1211                            "{ is not a correct Casing",
1212                            Casing_String.Location);
1213                      end if;
1214                end;
1215             end if;
1216          end;
1217
1218          if Current_Verbosity = High then
1219             Write_Str  ("  Casing = ");
1220             Write_Str  (Image (Data.Naming.Casing));
1221             Write_Char ('.');
1222             Write_Eol;
1223          end if;
1224
1225          --  Check Spec_Suffix
1226
1227          declare
1228             Ada_Spec_Suffix : constant Variable_Value :=
1229                                 Prj.Util.Value_Of
1230                                   (Index     => Name_Ada,
1231                                    Src_Index => 0,
1232                                    In_Array  => Data.Naming.Spec_Suffix);
1233
1234          begin
1235             if Ada_Spec_Suffix.Kind = Single
1236               and then Get_Name_String (Ada_Spec_Suffix.Value) /= ""
1237             then
1238                Get_Name_String (Ada_Spec_Suffix.Value);
1239                Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
1240                Data.Naming.Ada_Spec_Suffix := Name_Find;
1241                Data.Naming.Spec_Suffix_Loc := Ada_Spec_Suffix.Location;
1242
1243             else
1244                Data.Naming.Ada_Spec_Suffix := Default_Ada_Spec_Suffix;
1245             end if;
1246          end;
1247
1248          if Current_Verbosity = High then
1249             Write_Str  ("  Spec_Suffix = """);
1250             Write_Str  (Get_Name_String (Data.Naming.Ada_Spec_Suffix));
1251             Write_Char ('"');
1252             Write_Eol;
1253          end if;
1254
1255          --  Check Body_Suffix
1256
1257          declare
1258             Ada_Body_Suffix : constant Variable_Value :=
1259               Prj.Util.Value_Of
1260                 (Index     => Name_Ada,
1261                  Src_Index => 0,
1262                  In_Array  => Data.Naming.Body_Suffix);
1263
1264          begin
1265             if Ada_Body_Suffix.Kind = Single
1266               and then Get_Name_String (Ada_Body_Suffix.Value) /= ""
1267             then
1268                Get_Name_String (Ada_Body_Suffix.Value);
1269                Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
1270                Data.Naming.Ada_Body_Suffix := Name_Find;
1271                Data.Naming.Body_Suffix_Loc := Ada_Body_Suffix.Location;
1272
1273             else
1274                Data.Naming.Ada_Body_Suffix := Default_Ada_Body_Suffix;
1275             end if;
1276          end;
1277
1278          if Current_Verbosity = High then
1279             Write_Str  ("  Body_Suffix = """);
1280             Write_Str  (Get_Name_String (Data.Naming.Ada_Body_Suffix));
1281             Write_Char ('"');
1282             Write_Eol;
1283          end if;
1284
1285          --  Check Separate_Suffix
1286
1287          declare
1288             Ada_Sep_Suffix : constant Variable_Value :=
1289                                Prj.Util.Value_Of
1290                                  (Variable_Name => Name_Separate_Suffix,
1291                                   In_Variables  => Naming.Decl.Attributes);
1292
1293          begin
1294             if Ada_Sep_Suffix.Default then
1295                Data.Naming.Separate_Suffix :=
1296                  Data.Naming.Ada_Body_Suffix;
1297
1298             else
1299                Get_Name_String (Ada_Sep_Suffix.Value);
1300
1301                if Name_Len = 0 then
1302                   Error_Msg
1303                     (Project,
1304                      "Separate_Suffix cannot be empty",
1305                      Ada_Sep_Suffix.Location);
1306
1307                else
1308                   Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
1309                   Data.Naming.Separate_Suffix := Name_Find;
1310                   Data.Naming.Sep_Suffix_Loc  := Ada_Sep_Suffix.Location;
1311                end if;
1312             end if;
1313          end;
1314
1315          if Current_Verbosity = High then
1316             Write_Str  ("  Separate_Suffix = """);
1317             Write_Str  (Get_Name_String (Data.Naming.Separate_Suffix));
1318             Write_Char ('"');
1319             Write_Eol;
1320          end if;
1321
1322          --  Check if Data.Naming is valid
1323
1324          Check_Ada_Naming_Scheme_Validity (Project, Data.Naming);
1325
1326       else
1327          Data.Naming.Ada_Spec_Suffix := Default_Ada_Spec_Suffix;
1328          Data.Naming.Ada_Body_Suffix := Default_Ada_Body_Suffix;
1329          Data.Naming.Separate_Suffix := Default_Ada_Body_Suffix;
1330       end if;
1331    end Check_Naming_Scheme;
1332
1333    ------------------------------
1334    -- Check_Library_Attributes --
1335    ------------------------------
1336
1337    procedure Check_Library_Attributes
1338      (Project : Project_Id; Data : in out Project_Data)
1339    is
1340       Attributes : constant Prj.Variable_Id := Data.Decl.Attributes;
1341
1342       Lib_Dir : constant Prj.Variable_Value :=
1343                   Prj.Util.Value_Of (Snames.Name_Library_Dir, Attributes);
1344
1345       Lib_Name : constant Prj.Variable_Value :=
1346                    Prj.Util.Value_Of (Snames.Name_Library_Name, Attributes);
1347
1348       Lib_Version : constant Prj.Variable_Value :=
1349                       Prj.Util.Value_Of
1350                         (Snames.Name_Library_Version, Attributes);
1351
1352       The_Lib_Kind : constant Prj.Variable_Value :=
1353                        Prj.Util.Value_Of
1354                          (Snames.Name_Library_Kind, Attributes);
1355
1356    begin
1357       --  Special case of extending project
1358
1359       if Data.Extends /= No_Project then
1360          declare
1361             Extended_Data : constant Project_Data :=
1362                               Projects.Table (Data.Extends);
1363
1364          begin
1365             --  If the project extended is a library project, we inherit
1366             --  the library name, if it is not redefined; we check that
1367             --  the library directory is specified; and we reset the
1368             --  library flag for the extended project.
1369
1370             if Extended_Data.Library then
1371                if Lib_Name.Default then
1372                   Data.Library_Name := Extended_Data.Library_Name;
1373                end if;
1374
1375                if Lib_Dir.Default then
1376                   if not Data.Virtual then
1377                      Error_Msg
1378                        (Project,
1379                         "a project extending a library project must " &
1380                         "specify an attribute Library_Dir",
1381                         Data.Location);
1382                   end if;
1383                end if;
1384
1385                Projects.Table (Data.Extends).Library := False;
1386             end if;
1387          end;
1388       end if;
1389
1390       pragma Assert (Lib_Dir.Kind = Single);
1391
1392       if Lib_Dir.Value = Empty_String then
1393          if Current_Verbosity = High then
1394             Write_Line ("No library directory");
1395          end if;
1396
1397       else
1398          --  Find path name, check that it is a directory
1399
1400          Locate_Directory
1401            (Lib_Dir.Value, Data.Display_Directory,
1402             Data.Library_Dir, Data.Display_Library_Dir);
1403
1404          if Data.Library_Dir = No_Name then
1405
1406             --  Get the absolute name of the library directory that
1407             --  does not exist, to report an error.
1408
1409             declare
1410                Dir_Name : constant String := Get_Name_String (Lib_Dir.Value);
1411
1412             begin
1413                if Is_Absolute_Path (Dir_Name) then
1414                   Err_Vars.Error_Msg_Name_1 := Lib_Dir.Value;
1415
1416                else
1417                   Get_Name_String (Data.Display_Directory);
1418
1419                   if Name_Buffer (Name_Len) /= Directory_Separator then
1420                      Name_Len := Name_Len + 1;
1421                      Name_Buffer (Name_Len) := Directory_Separator;
1422                   end if;
1423
1424                   Name_Buffer
1425                     (Name_Len + 1 .. Name_Len + Dir_Name'Length) :=
1426                     Dir_Name;
1427                   Name_Len := Name_Len + Dir_Name'Length;
1428                   Err_Vars.Error_Msg_Name_1 := Name_Find;
1429                end if;
1430
1431                --  Report the error
1432
1433                Error_Msg
1434                  (Project,
1435                   "library directory { does not exist",
1436                   Lib_Dir.Location);
1437             end;
1438
1439          --  comment ???
1440
1441          elsif Data.Library_Dir = Data.Object_Directory then
1442             Error_Msg
1443               (Project,
1444                "library directory cannot be the same " &
1445                "as object directory",
1446                Lib_Dir.Location);
1447             Data.Library_Dir := No_Name;
1448             Data.Display_Library_Dir := No_Name;
1449
1450          --  comment ???
1451
1452          else
1453             if Current_Verbosity = High then
1454                Write_Str ("Library directory =""");
1455                Write_Str (Get_Name_String (Data.Display_Library_Dir));
1456                Write_Line ("""");
1457             end if;
1458          end if;
1459       end if;
1460
1461       pragma Assert (Lib_Name.Kind = Single);
1462
1463       if Lib_Name.Value = Empty_String then
1464          if Current_Verbosity = High
1465            and then Data.Library_Name = No_Name
1466          then
1467             Write_Line ("No library name");
1468          end if;
1469
1470       else
1471          --  There is no restriction on the syntax of library names
1472
1473          Data.Library_Name := Lib_Name.Value;
1474       end if;
1475
1476       if Data.Library_Name /= No_Name
1477         and then Current_Verbosity = High
1478       then
1479          Write_Str ("Library name = """);
1480          Write_Str (Get_Name_String (Data.Library_Name));
1481          Write_Line ("""");
1482       end if;
1483
1484       Data.Library :=
1485         Data.Library_Dir /= No_Name
1486         and then
1487       Data.Library_Name /= No_Name;
1488
1489       if Data.Library then
1490          if MLib.Tgt.Support_For_Libraries = MLib.Tgt.None then
1491             Error_Msg
1492               (Project,
1493                "?libraries are not supported on this platform",
1494                Lib_Name.Location);
1495             Data.Library := False;
1496
1497          else
1498             pragma Assert (Lib_Version.Kind = Single);
1499
1500             if Lib_Version.Value = Empty_String then
1501                if Current_Verbosity = High then
1502                   Write_Line ("No library version specified");
1503                end if;
1504
1505             else
1506                Data.Lib_Internal_Name := Lib_Version.Value;
1507             end if;
1508
1509             pragma Assert (The_Lib_Kind.Kind = Single);
1510
1511             if The_Lib_Kind.Value = Empty_String then
1512                if Current_Verbosity = High then
1513                   Write_Line ("No library kind specified");
1514                end if;
1515
1516             else
1517                Get_Name_String (The_Lib_Kind.Value);
1518
1519                declare
1520                   Kind_Name : constant String :=
1521                                 To_Lower (Name_Buffer (1 .. Name_Len));
1522
1523                   OK : Boolean := True;
1524
1525                begin
1526                   if Kind_Name = "static" then
1527                      Data.Library_Kind := Static;
1528
1529                   elsif Kind_Name = "dynamic" then
1530                      Data.Library_Kind := Dynamic;
1531
1532                   elsif Kind_Name = "relocatable" then
1533                      Data.Library_Kind := Relocatable;
1534
1535                   else
1536                      Error_Msg
1537                        (Project,
1538                         "illegal value for Library_Kind",
1539                         The_Lib_Kind.Location);
1540                      OK := False;
1541                   end if;
1542
1543                   if Current_Verbosity = High and then OK then
1544                      Write_Str ("Library kind = ");
1545                      Write_Line (Kind_Name);
1546                   end if;
1547
1548                   if Data.Library_Kind /= Static and then
1549                     MLib.Tgt.Support_For_Libraries = MLib.Tgt.Static_Only
1550                   then
1551                      Error_Msg
1552                        (Project,
1553                         "only static libraries are supported " &
1554                         "on this platform",
1555                         The_Lib_Kind.Location);
1556                      Data.Library := False;
1557                   end if;
1558                end;
1559             end if;
1560
1561             if Data.Library and then Current_Verbosity = High then
1562                Write_Line ("This is a library project file");
1563             end if;
1564
1565          end if;
1566       end if;
1567    end Check_Library_Attributes;
1568
1569    --------------------------
1570    -- Check_Package_Naming --
1571    --------------------------
1572
1573    procedure Check_Package_Naming
1574      (Project : Project_Id; Data : in out Project_Data)
1575    is
1576       Naming_Id : constant Package_Id :=
1577                     Util.Value_Of (Name_Naming, Data.Decl.Packages);
1578
1579       Naming : Package_Element;
1580
1581    begin
1582       --  If there is a package Naming, we will put in Data.Naming
1583       --  what is in this package Naming.
1584
1585       if Naming_Id /= No_Package then
1586          Naming := Packages.Table (Naming_Id);
1587
1588          if Current_Verbosity = High then
1589             Write_Line ("Checking ""Naming"".");
1590          end if;
1591
1592          --  Check Spec_Suffix
1593
1594          declare
1595             Spec_Suffixs : Array_Element_Id :=
1596                              Util.Value_Of
1597                                (Name_Spec_Suffix,
1598                                 Naming.Decl.Arrays);
1599
1600             Suffix  : Array_Element_Id;
1601             Element : Array_Element;
1602             Suffix2 : Array_Element_Id;
1603
1604          begin
1605             --  If some suffixs have been specified, we make sure that
1606             --  for each language for which a default suffix has been
1607             --  specified, there is a suffix specified, either the one
1608             --  in the project file or if there were none, the default.
1609
1610             if Spec_Suffixs /= No_Array_Element then
1611                Suffix := Data.Naming.Spec_Suffix;
1612
1613                while Suffix /= No_Array_Element loop
1614                   Element := Array_Elements.Table (Suffix);
1615                   Suffix2 := Spec_Suffixs;
1616
1617                   while Suffix2 /= No_Array_Element loop
1618                      exit when Array_Elements.Table (Suffix2).Index =
1619                        Element.Index;
1620                      Suffix2 := Array_Elements.Table (Suffix2).Next;
1621                   end loop;
1622
1623                   --  There is a registered default suffix, but no
1624                   --  suffix specified in the project file.
1625                   --  Add the default to the array.
1626
1627                   if Suffix2 = No_Array_Element then
1628                      Array_Elements.Increment_Last;
1629                      Array_Elements.Table (Array_Elements.Last) :=
1630                        (Index                => Element.Index,
1631                         Src_Index            => Element.Src_Index,
1632                         Index_Case_Sensitive => False,
1633                         Value                => Element.Value,
1634                         Next                 => Spec_Suffixs);
1635                      Spec_Suffixs := Array_Elements.Last;
1636                   end if;
1637
1638                   Suffix := Element.Next;
1639                end loop;
1640
1641                --  Put the resulting array as the specification suffixs
1642
1643                Data.Naming.Spec_Suffix := Spec_Suffixs;
1644             end if;
1645          end;
1646
1647          declare
1648             Current : Array_Element_Id := Data.Naming.Spec_Suffix;
1649             Element : Array_Element;
1650
1651          begin
1652             while Current /= No_Array_Element loop
1653                Element := Array_Elements.Table (Current);
1654                Get_Name_String (Element.Value.Value);
1655
1656                if Name_Len = 0 then
1657                   Error_Msg
1658                     (Project,
1659                      "Spec_Suffix cannot be empty",
1660                      Element.Value.Location);
1661                end if;
1662
1663                Array_Elements.Table (Current) := Element;
1664                Current := Element.Next;
1665             end loop;
1666          end;
1667
1668          --  Check Body_Suffix
1669
1670          declare
1671             Impl_Suffixs : Array_Element_Id :=
1672               Util.Value_Of
1673                 (Name_Body_Suffix,
1674                  Naming.Decl.Arrays);
1675
1676             Suffix       : Array_Element_Id;
1677             Element      : Array_Element;
1678             Suffix2      : Array_Element_Id;
1679
1680          begin
1681             --  If some suffixes have been specified, we make sure that
1682             --  for each language for which a default suffix has been
1683             --  specified, there is a suffix specified, either the one
1684             --  in the project file or if there were noe, the default.
1685
1686             if Impl_Suffixs /= No_Array_Element then
1687                Suffix := Data.Naming.Body_Suffix;
1688
1689                while Suffix /= No_Array_Element loop
1690                   Element := Array_Elements.Table (Suffix);
1691                   Suffix2 := Impl_Suffixs;
1692
1693                   while Suffix2 /= No_Array_Element loop
1694                      exit when Array_Elements.Table (Suffix2).Index =
1695                        Element.Index;
1696                      Suffix2 := Array_Elements.Table (Suffix2).Next;
1697                   end loop;
1698
1699                   --  There is a registered default suffix, but no suffix was
1700                   --  specified in the project file. Add the default to the
1701                   --  array.
1702
1703                   if Suffix2 = No_Array_Element then
1704                      Array_Elements.Increment_Last;
1705                      Array_Elements.Table (Array_Elements.Last) :=
1706                        (Index                => Element.Index,
1707                         Src_Index            => Element.Src_Index,
1708                         Index_Case_Sensitive => False,
1709                         Value                => Element.Value,
1710                         Next                 => Impl_Suffixs);
1711                      Impl_Suffixs := Array_Elements.Last;
1712                   end if;
1713
1714                   Suffix := Element.Next;
1715                end loop;
1716
1717                --  Put the resulting array as the implementation suffixs
1718
1719                Data.Naming.Body_Suffix := Impl_Suffixs;
1720             end if;
1721          end;
1722
1723          declare
1724             Current : Array_Element_Id := Data.Naming.Body_Suffix;
1725             Element : Array_Element;
1726
1727          begin
1728             while Current /= No_Array_Element loop
1729                Element := Array_Elements.Table (Current);
1730                Get_Name_String (Element.Value.Value);
1731
1732                if Name_Len = 0 then
1733                   Error_Msg
1734                     (Project,
1735                      "Body_Suffix cannot be empty",
1736                      Element.Value.Location);
1737                end if;
1738
1739                Array_Elements.Table (Current) := Element;
1740                Current := Element.Next;
1741             end loop;
1742          end;
1743
1744          --  Get the exceptions, if any
1745
1746          Data.Naming.Specification_Exceptions :=
1747            Util.Value_Of
1748              (Name_Specification_Exceptions,
1749               In_Arrays => Naming.Decl.Arrays);
1750
1751          Data.Naming.Implementation_Exceptions :=
1752            Util.Value_Of
1753              (Name_Implementation_Exceptions,
1754               In_Arrays => Naming.Decl.Arrays);
1755       end if;
1756    end Check_Package_Naming;
1757
1758    ---------------------------------
1759    -- Check_Programming_Languages --
1760    ---------------------------------
1761
1762    procedure Check_Programming_Languages (Data : in out Project_Data) is
1763       Languages : Variable_Value := Nil_Variable_Value;
1764
1765    begin
1766       Languages := Prj.Util.Value_Of (Name_Languages, Data.Decl.Attributes);
1767       Data.Ada_Sources_Present   := Data.Source_Dirs /= Nil_String;
1768       Data.Other_Sources_Present := Data.Source_Dirs /= Nil_String;
1769
1770       if Data.Source_Dirs /= Nil_String then
1771
1772          --  Check if languages are specified in this project
1773
1774          if Languages.Default then
1775
1776             --  Attribute Languages is not specified. So, it defaults to
1777             --  a project of language Ada only.
1778
1779             Data.Languages (Ada_Language_Index) := True;
1780
1781             --  No sources of languages other than Ada
1782
1783             Data.Other_Sources_Present := False;
1784
1785          else
1786             declare
1787                Current   : String_List_Id := Languages.Values;
1788                Element   : String_Element;
1789                Lang_Name : Name_Id;
1790                Index     : Language_Index;
1791
1792             begin
1793                --  Assume that there is no language specified yet
1794
1795                Data.Other_Sources_Present := False;
1796                Data.Ada_Sources_Present   := False;
1797
1798                --  Look through all the languages specified in attribute
1799                --  Languages, if any
1800
1801                while Current /= Nil_String loop
1802                   Element := String_Elements.Table (Current);
1803                   Get_Name_String (Element.Value);
1804                   To_Lower (Name_Buffer (1 .. Name_Len));
1805                   Lang_Name := Name_Find;
1806                   Index := Language_Indexes.Get (Lang_Name);
1807
1808                   if Index = No_Language_Index then
1809                      Add_Language_Name (Lang_Name);
1810                      Index := Last_Language_Index;
1811                   end if;
1812
1813                   Set (Index, True, Data);
1814                   Set (Language_Processing => Default_Language_Processing_Data,
1815                        For_Language        => Index,
1816                        In_Project          => Data);
1817
1818                   if Index = Ada_Language_Index then
1819                      Data.Ada_Sources_Present := True;
1820
1821                   else
1822                      Data.Other_Sources_Present := True;
1823                   end if;
1824
1825                   Current := Element.Next;
1826                end loop;
1827             end;
1828          end if;
1829       end if;
1830    end Check_Programming_Languages;
1831
1832    -------------------
1833    -- Check_Project --
1834    -------------------
1835
1836    function Check_Project
1837      (P            : Project_Id;
1838       Root_Project : Project_Id;
1839       Extending    : Boolean) return Boolean
1840    is
1841    begin
1842       if P = Root_Project then
1843          return True;
1844
1845       elsif Extending then
1846          declare
1847             Data : Project_Data := Projects.Table (Root_Project);
1848
1849          begin
1850             while Data.Extends /= No_Project loop
1851                if P = Data.Extends then
1852                   return True;
1853                end if;
1854
1855                Data := Projects.Table (Data.Extends);
1856             end loop;
1857          end;
1858       end if;
1859
1860       return False;
1861    end Check_Project;
1862
1863    -------------------------------
1864    -- Check_Stand_Alone_Library --
1865    -------------------------------
1866
1867    procedure Check_Stand_Alone_Library
1868      (Project   : Project_Id;
1869       Data      : in out Project_Data;
1870       Extending : Boolean)
1871    is
1872       Lib_Interfaces      : constant Prj.Variable_Value :=
1873                               Prj.Util.Value_Of
1874                                 (Snames.Name_Library_Interface,
1875                                  Data.Decl.Attributes);
1876
1877       Lib_Auto_Init       : constant Prj.Variable_Value :=
1878                               Prj.Util.Value_Of
1879                                 (Snames.Name_Library_Auto_Init,
1880                                  Data.Decl.Attributes);
1881
1882       Lib_Src_Dir         : constant Prj.Variable_Value :=
1883                               Prj.Util.Value_Of
1884                                 (Snames.Name_Library_Src_Dir,
1885                                  Data.Decl.Attributes);
1886
1887       Lib_Symbol_File     : constant Prj.Variable_Value :=
1888                               Prj.Util.Value_Of
1889                                 (Snames.Name_Library_Symbol_File,
1890                                  Data.Decl.Attributes);
1891
1892       Lib_Symbol_Policy   : constant Prj.Variable_Value :=
1893                               Prj.Util.Value_Of
1894                                 (Snames.Name_Library_Symbol_Policy,
1895                                  Data.Decl.Attributes);
1896
1897       Lib_Ref_Symbol_File : constant Prj.Variable_Value :=
1898                               Prj.Util.Value_Of
1899                                 (Snames.Name_Library_Reference_Symbol_File,
1900                                  Data.Decl.Attributes);
1901
1902       Auto_Init_Supported : constant Boolean :=
1903                               MLib.Tgt.
1904                                 Standalone_Library_Auto_Init_Is_Supported;
1905
1906       OK : Boolean := True;
1907
1908    begin
1909       pragma Assert (Lib_Interfaces.Kind = List);
1910
1911       --  It is a stand-alone library project file if attribute
1912       --  Library_Interface is defined.
1913
1914       if not Lib_Interfaces.Default then
1915          SAL_Library : declare
1916             Interfaces     : String_List_Id := Lib_Interfaces.Values;
1917             Interface_ALIs : String_List_Id := Nil_String;
1918             Unit           : Name_Id;
1919             The_Unit_Id    : Unit_Id;
1920             The_Unit_Data  : Unit_Data;
1921
1922             procedure Add_ALI_For (Source : Name_Id);
1923             --  Add an ALI file name to the list of Interface ALIs
1924
1925             -----------------
1926             -- Add_ALI_For --
1927             -----------------
1928
1929             procedure Add_ALI_For (Source : Name_Id) is
1930             begin
1931                Get_Name_String (Source);
1932
1933                declare
1934                   ALI         : constant String :=
1935                     ALI_File_Name (Name_Buffer (1 .. Name_Len));
1936                   ALI_Name_Id : Name_Id;
1937                begin
1938                   Name_Len := ALI'Length;
1939                   Name_Buffer (1 .. Name_Len) := ALI;
1940                   ALI_Name_Id := Name_Find;
1941
1942                   String_Elements.Increment_Last;
1943                   String_Elements.Table (String_Elements.Last) :=
1944                     (Value         => ALI_Name_Id,
1945                      Index         => 0,
1946                      Display_Value => ALI_Name_Id,
1947                      Location      => String_Elements.Table
1948                        (Interfaces).Location,
1949                      Flag          => False,
1950                      Next          => Interface_ALIs);
1951                   Interface_ALIs := String_Elements.Last;
1952                end;
1953             end Add_ALI_For;
1954
1955          --  Start of processing for SAL_Library
1956
1957          begin
1958             Data.Standalone_Library := True;
1959
1960             --  Library_Interface cannot be an empty list
1961
1962             if Interfaces = Nil_String then
1963                Error_Msg
1964                  (Project,
1965                   "Library_Interface cannot be an empty list",
1966                   Lib_Interfaces.Location);
1967             end if;
1968
1969             --  Process each unit name specified in the attribute
1970             --  Library_Interface.
1971
1972             while Interfaces /= Nil_String loop
1973                Get_Name_String
1974                  (String_Elements.Table (Interfaces).Value);
1975                To_Lower (Name_Buffer (1 .. Name_Len));
1976
1977                if Name_Len = 0 then
1978                   Error_Msg
1979                     (Project,
1980                      "an interface cannot be an empty string",
1981                      String_Elements.Table (Interfaces).Location);
1982
1983                else
1984                   Unit := Name_Find;
1985                   Error_Msg_Name_1 := Unit;
1986                   The_Unit_Id := Units_Htable.Get (Unit);
1987
1988                   if The_Unit_Id = Prj.Com.No_Unit then
1989                      Error_Msg
1990                        (Project,
1991                         "unknown unit {",
1992                         String_Elements.Table (Interfaces).Location);
1993
1994                   else
1995                      --  Check that the unit is part of the project
1996
1997                      The_Unit_Data := Units.Table (The_Unit_Id);
1998
1999                      if The_Unit_Data.File_Names
2000                        (Com.Body_Part).Name /= No_Name
2001                        and then The_Unit_Data.File_Names
2002                          (Com.Body_Part).Path /= Slash
2003                      then
2004                         if Check_Project
2005                           (The_Unit_Data.File_Names (Body_Part).Project,
2006                            Project, Extending)
2007                         then
2008                            --  There is a body for this unit.
2009                            --  If there is no spec, we need to check
2010                            --  that it is not a subunit.
2011
2012                            if The_Unit_Data.File_Names
2013                              (Specification).Name = No_Name
2014                            then
2015                               declare
2016                                  Src_Ind : Source_File_Index;
2017
2018                               begin
2019                                  Src_Ind := Sinput.P.Load_Project_File
2020                                    (Get_Name_String
2021                                       (The_Unit_Data.File_Names
2022                                          (Body_Part).Path));
2023
2024                                  if Sinput.P.Source_File_Is_Subunit
2025                                    (Src_Ind)
2026                                  then
2027                                     Error_Msg
2028                                       (Project,
2029                                        "{ is a subunit; " &
2030                                        "it cannot be an interface",
2031                                        String_Elements.Table
2032                                          (Interfaces).Location);
2033                                  end if;
2034                               end;
2035                            end if;
2036
2037                            --  The unit is not a subunit, so we add
2038                            --  to the Interface ALIs the ALI file
2039                            --  corresponding to the body.
2040
2041                            Add_ALI_For
2042                              (The_Unit_Data.File_Names (Body_Part).Name);
2043
2044                         else
2045                            Error_Msg
2046                              (Project,
2047                               "{ is not an unit of this project",
2048                               String_Elements.Table
2049                                 (Interfaces).Location);
2050                         end if;
2051
2052                      elsif The_Unit_Data.File_Names
2053                        (Com.Specification).Name /= No_Name
2054                        and then The_Unit_Data.File_Names
2055                          (Com.Specification).Path /= Slash
2056                        and then Check_Project
2057                          (The_Unit_Data.File_Names
2058                               (Specification).Project,
2059                           Project, Extending)
2060
2061                      then
2062                         --  The unit is part of the project, it has
2063                         --  a spec, but no body. We add to the Interface
2064                         --  ALIs the ALI file corresponding to the spec.
2065
2066                         Add_ALI_For
2067                           (The_Unit_Data.File_Names (Specification).Name);
2068
2069                      else
2070                         Error_Msg
2071                           (Project,
2072                            "{ is not an unit of this project",
2073                            String_Elements.Table (Interfaces).Location);
2074                      end if;
2075                   end if;
2076
2077                end if;
2078
2079                Interfaces := String_Elements.Table (Interfaces).Next;
2080             end loop;
2081
2082             --  Put the list of Interface ALIs in the project data
2083
2084             Data.Lib_Interface_ALIs := Interface_ALIs;
2085
2086             --  Check value of attribute Library_Auto_Init and set
2087             --  Lib_Auto_Init accordingly.
2088
2089             if Lib_Auto_Init.Default then
2090
2091                --  If no attribute Library_Auto_Init is declared, then
2092                --  set auto init only if it is supported.
2093
2094                Data.Lib_Auto_Init := Auto_Init_Supported;
2095
2096             else
2097                Get_Name_String (Lib_Auto_Init.Value);
2098                To_Lower (Name_Buffer (1 .. Name_Len));
2099
2100                if Name_Buffer (1 .. Name_Len) = "false" then
2101                   Data.Lib_Auto_Init := False;
2102
2103                elsif Name_Buffer (1 .. Name_Len) = "true" then
2104                   if Auto_Init_Supported then
2105                      Data.Lib_Auto_Init := True;
2106
2107                   else
2108                      --  Library_Auto_Init cannot be "true" if auto init
2109                      --  is not supported
2110
2111                      Error_Msg
2112                        (Project,
2113                         "library auto init not supported " &
2114                         "on this platform",
2115                         Lib_Auto_Init.Location);
2116                   end if;
2117
2118                else
2119                   Error_Msg
2120                     (Project,
2121                      "invalid value for attribute Library_Auto_Init",
2122                      Lib_Auto_Init.Location);
2123                end if;
2124             end if;
2125          end SAL_Library;
2126
2127          --  If attribute Library_Src_Dir is defined and not the
2128          --  empty string, check if the directory exist and is not
2129          --  the object directory or one of the source directories.
2130          --  This is the directory where copies of the interface
2131          --  sources will be copied. Note that this directory may be
2132          --  the library directory.
2133
2134          if Lib_Src_Dir.Value /= Empty_String then
2135             declare
2136                Dir_Id : constant Name_Id := Lib_Src_Dir.Value;
2137
2138             begin
2139                Locate_Directory
2140                  (Dir_Id, Data.Display_Directory,
2141                   Data.Library_Src_Dir,
2142                   Data.Display_Library_Src_Dir);
2143
2144                --  If directory does not exist, report an error
2145
2146                if Data.Library_Src_Dir = No_Name then
2147
2148                   --  Get the absolute name of the library directory
2149                   --  that does not exist, to report an error.
2150
2151                   declare
2152                      Dir_Name : constant String :=
2153                        Get_Name_String (Dir_Id);
2154
2155                   begin
2156                      if Is_Absolute_Path (Dir_Name) then
2157                         Err_Vars.Error_Msg_Name_1 := Dir_Id;
2158
2159                      else
2160                         Get_Name_String (Data.Directory);
2161
2162                         if Name_Buffer (Name_Len) /=
2163                           Directory_Separator
2164                         then
2165                            Name_Len := Name_Len + 1;
2166                            Name_Buffer (Name_Len) :=
2167                              Directory_Separator;
2168                         end if;
2169
2170                         Name_Buffer
2171                           (Name_Len + 1 ..
2172                              Name_Len + Dir_Name'Length) :=
2173                             Dir_Name;
2174                         Name_Len := Name_Len + Dir_Name'Length;
2175                         Err_Vars.Error_Msg_Name_1 := Name_Find;
2176                      end if;
2177
2178                      --  Report the error
2179
2180                      Error_Msg
2181                        (Project,
2182                         "Directory { does not exist",
2183                         Lib_Src_Dir.Location);
2184                   end;
2185
2186                   --  Report an error if it is the same as the object
2187                   --  directory.
2188
2189                elsif Data.Library_Src_Dir = Data.Object_Directory then
2190                   Error_Msg
2191                     (Project,
2192                      "directory to copy interfaces cannot be " &
2193                      "the object directory",
2194                      Lib_Src_Dir.Location);
2195                   Data.Library_Src_Dir := No_Name;
2196
2197                   --  Check if it is same as one of the source directories
2198
2199                else
2200                   declare
2201                      Src_Dirs : String_List_Id := Data.Source_Dirs;
2202                      Src_Dir  : String_Element;
2203
2204                   begin
2205                      while Src_Dirs /= Nil_String loop
2206                         Src_Dir := String_Elements.Table (Src_Dirs);
2207                         Src_Dirs := Src_Dir.Next;
2208
2209                         --  Report error if it is one of the source directories
2210
2211                         if Data.Library_Src_Dir = Src_Dir.Value then
2212                            Error_Msg
2213                              (Project,
2214                               "directory to copy interfaces cannot " &
2215                               "be one of the source directories",
2216                               Lib_Src_Dir.Location);
2217                            Data.Library_Src_Dir := No_Name;
2218                            exit;
2219                         end if;
2220                      end loop;
2221                   end;
2222
2223                   --  pages of code follow here with no comments at all ???
2224
2225                   if Data.Library_Src_Dir /= No_Name
2226                     and then Current_Verbosity = High
2227                   then
2228                      Write_Str ("Directory to copy interfaces =""");
2229                      Write_Str (Get_Name_String (Data.Library_Dir));
2230                      Write_Line ("""");
2231                   end if;
2232                end if;
2233             end;
2234          end if;
2235
2236          if not Lib_Symbol_Policy.Default then
2237             declare
2238                Value : constant String :=
2239                  To_Lower
2240                    (Get_Name_String (Lib_Symbol_Policy.Value));
2241
2242             begin
2243                if Value = "autonomous" or else Value = "default" then
2244                   Data.Symbol_Data.Symbol_Policy := Autonomous;
2245
2246                elsif Value = "compliant" then
2247                   Data.Symbol_Data.Symbol_Policy := Compliant;
2248
2249                elsif Value = "controlled" then
2250                   Data.Symbol_Data.Symbol_Policy := Controlled;
2251
2252                elsif Value = "restricted" then
2253                   Data.Symbol_Data.Symbol_Policy := Restricted;
2254
2255                else
2256                   Error_Msg
2257                     (Project,
2258                      "illegal value for Library_Symbol_Policy",
2259                      Lib_Symbol_Policy.Location);
2260                end if;
2261             end;
2262          end if;
2263
2264          if Lib_Symbol_File.Default then
2265             if Data.Symbol_Data.Symbol_Policy = Restricted then
2266                Error_Msg
2267                  (Project,
2268                   "Library_Symbol_File needs to be defined when " &
2269                   "symbol policy is Restricted",
2270                   Lib_Symbol_Policy.Location);
2271             end if;
2272
2273          else
2274             Data.Symbol_Data.Symbol_File := Lib_Symbol_File.Value;
2275
2276             Get_Name_String (Lib_Symbol_File.Value);
2277
2278             if Name_Len = 0 then
2279                Error_Msg
2280                  (Project,
2281                   "symbol file name cannot be an empty string",
2282                   Lib_Symbol_File.Location);
2283
2284             else
2285                OK := not Is_Absolute_Path (Name_Buffer (1 .. Name_Len));
2286
2287                if OK then
2288                   for J in 1 .. Name_Len loop
2289                      if Name_Buffer (J) = '/'
2290                        or else Name_Buffer (J) = Directory_Separator
2291                      then
2292                         OK := False;
2293                         exit;
2294                      end if;
2295                   end loop;
2296                end if;
2297
2298                if not OK then
2299                   Error_Msg_Name_1 := Lib_Symbol_File.Value;
2300                   Error_Msg
2301                     (Project,
2302                      "symbol file name { is illegal. " &
2303                      "Name canot include directory info.",
2304                      Lib_Symbol_File.Location);
2305                end if;
2306             end if;
2307          end if;
2308
2309          if Lib_Ref_Symbol_File.Default then
2310             if Data.Symbol_Data.Symbol_Policy = Compliant
2311               or else Data.Symbol_Data.Symbol_Policy = Controlled
2312             then
2313                Error_Msg
2314                  (Project,
2315                   "a reference symbol file need to be defined",
2316                   Lib_Symbol_Policy.Location);
2317             end if;
2318
2319          else
2320             Data.Symbol_Data.Reference := Lib_Ref_Symbol_File.Value;
2321
2322             Get_Name_String (Lib_Ref_Symbol_File.Value);
2323
2324             if Name_Len = 0 then
2325                Error_Msg
2326                  (Project,
2327                   "reference symbol file name cannot be an empty string",
2328                   Lib_Symbol_File.Location);
2329
2330             else
2331                OK := not Is_Absolute_Path (Name_Buffer (1 .. Name_Len));
2332
2333                if OK then
2334                   for J in 1 .. Name_Len loop
2335                      if Name_Buffer (J) = '/'
2336                        or else Name_Buffer (J) = Directory_Separator
2337                      then
2338                         OK := False;
2339                         exit;
2340                      end if;
2341                   end loop;
2342                end if;
2343
2344                if not OK then
2345                   Error_Msg_Name_1 := Lib_Ref_Symbol_File.Value;
2346                   Error_Msg
2347                     (Project,
2348                      "reference symbol file { name is illegal. " &
2349                      "Name canot include directory info.",
2350                      Lib_Ref_Symbol_File.Location);
2351                end if;
2352
2353                if not Is_Regular_File
2354                  (Get_Name_String (Data.Object_Directory) &
2355                   Directory_Separator &
2356                   Get_Name_String (Lib_Ref_Symbol_File.Value))
2357                then
2358                   Error_Msg_Name_1 := Lib_Ref_Symbol_File.Value;
2359                   Error_Msg
2360                     (Project,
2361                      "library reference symbol file { does not exist",
2362                      Lib_Ref_Symbol_File.Location);
2363                end if;
2364
2365                if Data.Symbol_Data.Symbol_File /= No_Name then
2366                   declare
2367                      Symbol    : String :=
2368                        Get_Name_String
2369                          (Data.Symbol_Data.Symbol_File);
2370
2371                      Reference : String :=
2372                        Get_Name_String
2373                          (Data.Symbol_Data.Reference);
2374
2375                   begin
2376                      Canonical_Case_File_Name (Symbol);
2377                      Canonical_Case_File_Name (Reference);
2378
2379                      if Symbol = Reference then
2380                         Error_Msg
2381                           (Project,
2382                            "reference symbol file and symbol file " &
2383                            "cannot be the same file",
2384                            Lib_Ref_Symbol_File.Location);
2385                      end if;
2386                   end;
2387                end if;
2388             end if;
2389          end if;
2390       end if;
2391    end Check_Stand_Alone_Library;
2392
2393    ----------------------------
2394    -- Compute_Directory_Last --
2395    ----------------------------
2396
2397    function Compute_Directory_Last (Dir : String) return Natural is
2398    begin
2399       if Dir'Length > 1
2400         and then (Dir (Dir'Last - 1) = Directory_Separator
2401                   or else Dir (Dir'Last - 1) = '/')
2402       then
2403          return Dir'Last - 1;
2404       else
2405          return Dir'Last;
2406       end if;
2407    end Compute_Directory_Last;
2408
2409    --------------------
2410    -- Body_Suffix_Of --
2411    --------------------
2412
2413    function Body_Suffix_Of
2414      (Language   : Language_Index;
2415       In_Project : Project_Data) return String
2416    is
2417       Suffix_Id : constant Name_Id := Suffix_Of (Language, In_Project);
2418    begin
2419       if Suffix_Id /= No_Name then
2420          return Get_Name_String (Suffix_Id);
2421       else
2422          return "." & Get_Name_String (Language_Names.Table (Language));
2423       end if;
2424    end Body_Suffix_Of;
2425
2426    ---------------
2427    -- Error_Msg --
2428    ---------------
2429
2430    procedure Error_Msg
2431      (Project       : Project_Id;
2432       Msg           : String;
2433       Flag_Location : Source_Ptr)
2434    is
2435       Error_Buffer : String (1 .. 5_000);
2436       Error_Last   : Natural := 0;
2437       Msg_Name     : Natural := 0;
2438       First        : Positive := Msg'First;
2439
2440       procedure Add (C : Character);
2441       --  Add a character to the buffer
2442
2443       procedure Add (S : String);
2444       --  Add a string to the buffer
2445
2446       procedure Add (Id : Name_Id);
2447       --  Add a name to the buffer
2448
2449       ---------
2450       -- Add --
2451       ---------
2452
2453       procedure Add (C : Character) is
2454       begin
2455          Error_Last := Error_Last + 1;
2456          Error_Buffer (Error_Last) := C;
2457       end Add;
2458
2459       procedure Add (S : String) is
2460       begin
2461          Error_Buffer (Error_Last + 1 .. Error_Last + S'Length) := S;
2462          Error_Last := Error_Last + S'Length;
2463       end Add;
2464
2465       procedure Add (Id : Name_Id) is
2466       begin
2467          Get_Name_String (Id);
2468          Add (Name_Buffer (1 .. Name_Len));
2469       end Add;
2470
2471    --  Start of processing for Error_Msg
2472
2473    begin
2474       if Error_Report = null then
2475          Prj.Err.Error_Msg (Msg, Flag_Location);
2476          return;
2477       end if;
2478
2479       --  Ignore continuation character
2480
2481       if Msg (First) = '\' then
2482          First := First + 1;
2483
2484       --  Warniung character is always the first one in this package
2485
2486       elsif Msg (First) = '?' then
2487          First := First + 1;
2488          Add ("Warning: ");
2489       end if;
2490
2491       for Index in First .. Msg'Last loop
2492          if Msg (Index) = '{' or else Msg (Index) = '%' then
2493
2494             --  Include a name between double quotes
2495
2496             Msg_Name := Msg_Name + 1;
2497             Add ('"');
2498
2499             case Msg_Name is
2500                when 1 => Add (Err_Vars.Error_Msg_Name_1);
2501                when 2 => Add (Err_Vars.Error_Msg_Name_2);
2502                when 3 => Add (Err_Vars.Error_Msg_Name_3);
2503
2504                when others => null;
2505             end case;
2506
2507             Add ('"');
2508
2509          else
2510             Add (Msg (Index));
2511          end if;
2512
2513       end loop;
2514
2515       Error_Report (Error_Buffer (1 .. Error_Last), Project);
2516    end Error_Msg;
2517
2518    ------------------
2519    -- Find_Sources --
2520    ------------------
2521
2522    procedure Find_Sources
2523      (Project      : Project_Id;
2524       Data         : in out Project_Data;
2525       For_Language : Language_Index;
2526       Follow_Links : Boolean := False)
2527    is
2528       Source_Dir      : String_List_Id := Data.Source_Dirs;
2529       Element         : String_Element;
2530       Dir             : Dir_Type;
2531       Current_Source  : String_List_Id := Nil_String;
2532       Source_Recorded : Boolean := False;
2533
2534    begin
2535       if Current_Verbosity = High then
2536          Write_Line ("Looking for sources:");
2537       end if;
2538
2539       --  For each subdirectory
2540
2541       while Source_Dir /= Nil_String loop
2542          begin
2543             Source_Recorded := False;
2544             Element := String_Elements.Table (Source_Dir);
2545             if Element.Value /= No_Name then
2546                Get_Name_String (Element.Display_Value);
2547
2548                declare
2549                   Source_Directory : constant String :=
2550                     Name_Buffer (1 .. Name_Len) & Directory_Separator;
2551                   Dir_Last  : constant Natural :=
2552                      Compute_Directory_Last (Source_Directory);
2553
2554                begin
2555                   if Current_Verbosity = High then
2556                      Write_Str ("Source_Dir = ");
2557                      Write_Line (Source_Directory);
2558                   end if;
2559
2560                   --  We look to every entry in the source directory
2561
2562                   Open (Dir, Source_Directory
2563                                (Source_Directory'First .. Dir_Last));
2564
2565                   loop
2566                      Read (Dir, Name_Buffer, Name_Len);
2567
2568                      if Current_Verbosity = High then
2569                         Write_Str  ("   Checking ");
2570                         Write_Line (Name_Buffer (1 .. Name_Len));
2571                      end if;
2572
2573                      exit when Name_Len = 0;
2574
2575                      declare
2576                         File_Name : constant Name_Id := Name_Find;
2577                         Path      : constant String :=
2578                           Normalize_Pathname
2579                             (Name      => Name_Buffer (1 .. Name_Len),
2580                              Directory => Source_Directory
2581                                (Source_Directory'First .. Dir_Last),
2582                              Resolve_Links => Follow_Links,
2583                              Case_Sensitive => True);
2584                         Path_Name : Name_Id;
2585
2586                      begin
2587                         Name_Len := Path'Length;
2588                         Name_Buffer (1 .. Name_Len) := Path;
2589                         Path_Name := Name_Find;
2590
2591                         if For_Language = Ada_Language_Index then
2592
2593                            --  We attempt to register it as a source. However,
2594                            --  there is no error if the file does not contain
2595                            --  a valid source. But there is an error if we have
2596                            --  a duplicate unit name.
2597
2598                            Record_Ada_Source
2599                              (File_Name       => File_Name,
2600                               Path_Name       => Path_Name,
2601                               Project         => Project,
2602                               Data            => Data,
2603                               Location        => No_Location,
2604                               Current_Source  => Current_Source,
2605                               Source_Recorded => Source_Recorded,
2606                               Follow_Links    => Follow_Links);
2607
2608                         else
2609                            Check_For_Source
2610                              (File_Name        => File_Name,
2611                               Path_Name        => Path_Name,
2612                               Project          => Project,
2613                               Data             => Data,
2614                               Location         => No_Location,
2615                               Language         => For_Language,
2616                               Suffix           =>
2617                                 Body_Suffix_Of (For_Language, Data),
2618                               Naming_Exception => False);
2619                         end if;
2620                      end;
2621                   end loop;
2622
2623                   Close (Dir);
2624                end;
2625             end if;
2626
2627          exception
2628             when Directory_Error =>
2629                null;
2630          end;
2631
2632          if Source_Recorded then
2633             String_Elements.Table (Source_Dir).Flag := True;
2634          end if;
2635
2636          Source_Dir := Element.Next;
2637       end loop;
2638
2639       if Current_Verbosity = High then
2640          Write_Line ("end Looking for sources.");
2641       end if;
2642
2643       if For_Language = Ada_Language_Index then
2644
2645          --  If we have looked for sources and found none, then
2646          --  it is an error, except if it is an extending project.
2647          --  If a non extending project is not supposed to contain
2648          --  any source, then we never call Find_Sources.
2649
2650          if Current_Source /= Nil_String then
2651             Data.Ada_Sources_Present := True;
2652
2653          elsif Data.Extends = No_Project then
2654             Error_Msg
2655               (Project,
2656                "there are no Ada sources in this project",
2657                Data.Location);
2658          end if;
2659       end if;
2660    end Find_Sources;
2661
2662    --------------------------------
2663    -- Free_Ada_Naming_Exceptions --
2664    --------------------------------
2665
2666    procedure Free_Ada_Naming_Exceptions is
2667    begin
2668       Ada_Naming_Exception_Table.Set_Last (0);
2669       Ada_Naming_Exceptions.Reset;
2670       Reverse_Ada_Naming_Exceptions.Reset;
2671    end Free_Ada_Naming_Exceptions;
2672
2673    ---------------------
2674    -- Get_Directories --
2675    ---------------------
2676
2677    procedure Get_Directories
2678      (Project : Project_Id;
2679       Data    : in out Project_Data)
2680    is
2681       Object_Dir : constant Variable_Value :=
2682                      Util.Value_Of (Name_Object_Dir, Data.Decl.Attributes);
2683
2684       Exec_Dir   : constant Variable_Value :=
2685                      Util.Value_Of (Name_Exec_Dir, Data.Decl.Attributes);
2686
2687       Source_Dirs : constant Variable_Value :=
2688                       Util.Value_Of
2689                         (Name_Source_Dirs, Data.Decl.Attributes);
2690
2691       Last_Source_Dir : String_List_Id  := Nil_String;
2692
2693       procedure Find_Source_Dirs (From : Name_Id; Location : Source_Ptr);
2694       --  Find one or several source directories, and add them
2695       --  to the list of source directories of the project.
2696
2697       ----------------------
2698       -- Find_Source_Dirs --
2699       ----------------------
2700
2701       procedure Find_Source_Dirs (From : Name_Id; Location : Source_Ptr) is
2702          Directory : constant String := Get_Name_String (From);
2703          Element   : String_Element;
2704
2705          procedure Recursive_Find_Dirs (Path : Name_Id);
2706          --  Find all the subdirectories (recursively) of Path and add them
2707          --  to the list of source directories of the project.
2708
2709          -------------------------
2710          -- Recursive_Find_Dirs --
2711          -------------------------
2712
2713          procedure Recursive_Find_Dirs (Path : Name_Id) is
2714             Dir      : Dir_Type;
2715             Name     : String (1 .. 250);
2716             Last     : Natural;
2717             List     : String_List_Id := Data.Source_Dirs;
2718             Element  : String_Element;
2719             Found    : Boolean := False;
2720
2721             Non_Canonical_Path : Name_Id := No_Name;
2722             Canonical_Path     : Name_Id := No_Name;
2723
2724             The_Path : constant String :=
2725                          Normalize_Pathname (Get_Name_String (Path)) &
2726                          Directory_Separator;
2727
2728             The_Path_Last : constant Natural :=
2729                               Compute_Directory_Last (The_Path);
2730
2731          begin
2732             Name_Len := The_Path_Last - The_Path'First + 1;
2733             Name_Buffer (1 .. Name_Len) :=
2734               The_Path (The_Path'First .. The_Path_Last);
2735             Non_Canonical_Path := Name_Find;
2736             Get_Name_String (Non_Canonical_Path);
2737             Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
2738             Canonical_Path := Name_Find;
2739
2740             --  To avoid processing the same directory several times, check
2741             --  if the directory is already in Recursive_Dirs. If it is,
2742             --  then there is nothing to do, just return. If it is not, put
2743             --  it there and continue recursive processing.
2744
2745             if Recursive_Dirs.Get (Canonical_Path) then
2746                return;
2747
2748             else
2749                Recursive_Dirs.Set (Canonical_Path, True);
2750             end if;
2751
2752             --  Check if directory is already in list
2753
2754             while List /= Nil_String loop
2755                Element := String_Elements.Table (List);
2756
2757                if Element.Value /= No_Name then
2758                   Found := Element.Value = Canonical_Path;
2759                   exit when Found;
2760                end if;
2761
2762                List := Element.Next;
2763             end loop;
2764
2765             --  If directory is not already in list, put it there
2766
2767             if not Found then
2768                if Current_Verbosity = High then
2769                   Write_Str  ("   ");
2770                   Write_Line (The_Path (The_Path'First .. The_Path_Last));
2771                end if;
2772
2773                String_Elements.Increment_Last;
2774                Element :=
2775                  (Value    => Canonical_Path,
2776                   Display_Value => Non_Canonical_Path,
2777                   Location => No_Location,
2778                   Flag     => False,
2779                   Next     => Nil_String,
2780                   Index    => 0);
2781
2782                --  Case of first source directory
2783
2784                if Last_Source_Dir = Nil_String then
2785                   Data.Source_Dirs := String_Elements.Last;
2786
2787                   --  Here we already have source directories
2788
2789                else
2790                   --  Link the previous last to the new one
2791
2792                   String_Elements.Table (Last_Source_Dir).Next :=
2793                     String_Elements.Last;
2794                end if;
2795
2796                --  And register this source directory as the new last
2797
2798                Last_Source_Dir  := String_Elements.Last;
2799                String_Elements.Table (Last_Source_Dir) := Element;
2800             end if;
2801
2802             --  Now look for subdirectories. We do that even when this
2803             --  directory is already in the list, because some of its
2804             --  subdirectories may not be in the list yet.
2805
2806             Open (Dir, The_Path (The_Path'First .. The_Path_Last));
2807
2808             loop
2809                Read (Dir, Name, Last);
2810                exit when Last = 0;
2811
2812                if Name (1 .. Last) /= "."
2813                  and then Name (1 .. Last) /= ".."
2814                then
2815                   --  Avoid . and .. directories
2816
2817                   if Current_Verbosity = High then
2818                      Write_Str  ("   Checking ");
2819                      Write_Line (Name (1 .. Last));
2820                   end if;
2821
2822                   declare
2823                      Path_Name : constant String :=
2824                                    Normalize_Pathname
2825                                      (Name      => Name (1 .. Last),
2826                                       Directory =>
2827                                         The_Path
2828                                           (The_Path'First .. The_Path_Last),
2829                                       Resolve_Links  => False,
2830                                       Case_Sensitive => True);
2831
2832                   begin
2833                      if Is_Directory (Path_Name) then
2834
2835                         --  We have found a new subdirectory, call self
2836
2837                         Name_Len := Path_Name'Length;
2838                         Name_Buffer (1 .. Name_Len) := Path_Name;
2839                         Recursive_Find_Dirs (Name_Find);
2840                      end if;
2841                   end;
2842                end if;
2843             end loop;
2844
2845             Close (Dir);
2846
2847          exception
2848             when Directory_Error =>
2849                null;
2850          end Recursive_Find_Dirs;
2851
2852       --  Start of processing for Find_Source_Dirs
2853
2854       begin
2855          if Current_Verbosity = High then
2856             Write_Str ("Find_Source_Dirs (""");
2857             Write_Str (Directory);
2858             Write_Line (""")");
2859          end if;
2860
2861          --  First, check if we are looking for a directory tree,
2862          --  indicated by "/**" at the end.
2863
2864          if Directory'Length >= 3
2865            and then Directory (Directory'Last - 1 .. Directory'Last) = "**"
2866            and then (Directory (Directory'Last - 2) = '/'
2867                        or else
2868                      Directory (Directory'Last - 2) = Directory_Separator)
2869          then
2870             Data.Known_Order_Of_Source_Dirs := False;
2871
2872             Name_Len := Directory'Length - 3;
2873
2874             if Name_Len = 0 then
2875
2876                --  This is the case of "/**": all directories
2877                --  in the file system.
2878
2879                Name_Len := 1;
2880                Name_Buffer (1) := Directory (Directory'First);
2881
2882             else
2883                Name_Buffer (1 .. Name_Len) :=
2884                  Directory (Directory'First .. Directory'Last - 3);
2885             end if;
2886
2887             if Current_Verbosity = High then
2888                Write_Str ("Looking for all subdirectories of """);
2889                Write_Str (Name_Buffer (1 .. Name_Len));
2890                Write_Line ("""");
2891             end if;
2892
2893             declare
2894                Base_Dir : constant Name_Id := Name_Find;
2895                Root_Dir : constant String :=
2896                             Normalize_Pathname
2897                               (Name      => Get_Name_String (Base_Dir),
2898                                Directory =>
2899                                  Get_Name_String (Data.Display_Directory),
2900                                Resolve_Links  => False,
2901                                Case_Sensitive => True);
2902
2903             begin
2904                if Root_Dir'Length = 0 then
2905                   Err_Vars.Error_Msg_Name_1 := Base_Dir;
2906
2907                   if Location = No_Location then
2908                      Error_Msg
2909                        (Project,
2910                         "{ is not a valid directory.",
2911                         Data.Location);
2912                   else
2913                      Error_Msg
2914                        (Project,
2915                         "{ is not a valid directory.",
2916                         Location);
2917                   end if;
2918
2919                else
2920                   --  We have an existing directory, we register it and all
2921                   --  of its subdirectories.
2922
2923                   if Current_Verbosity = High then
2924                      Write_Line ("Looking for source directories:");
2925                   end if;
2926
2927                   Name_Len := Root_Dir'Length;
2928                   Name_Buffer (1 .. Name_Len) := Root_Dir;
2929                   Recursive_Find_Dirs (Name_Find);
2930
2931                   if Current_Verbosity = High then
2932                      Write_Line ("End of looking for source directories.");
2933                   end if;
2934                end if;
2935             end;
2936
2937          --  We have a single directory
2938
2939          else
2940             declare
2941                Path_Name         : Name_Id;
2942                Display_Path_Name : Name_Id;
2943
2944             begin
2945                Locate_Directory
2946                  (From, Data.Display_Directory, Path_Name, Display_Path_Name);
2947
2948                if Path_Name = No_Name then
2949                   Err_Vars.Error_Msg_Name_1 := From;
2950
2951                   if Location = No_Location then
2952                      Error_Msg
2953                        (Project,
2954                         "{ is not a valid directory",
2955                         Data.Location);
2956                   else
2957                      Error_Msg
2958                        (Project,
2959                         "{ is not a valid directory",
2960                         Location);
2961                   end if;
2962
2963                else
2964                   --  As it is an existing directory, we add it to
2965                   --  the list of directories.
2966
2967                   String_Elements.Increment_Last;
2968                   Element.Value := Path_Name;
2969                   Element.Display_Value := Display_Path_Name;
2970
2971                   if Last_Source_Dir = Nil_String then
2972
2973                      --  This is the first source directory
2974
2975                      Data.Source_Dirs := String_Elements.Last;
2976
2977                   else
2978                      --  We already have source directories,
2979                      --  link the previous last to the new one.
2980
2981                      String_Elements.Table (Last_Source_Dir).Next :=
2982                        String_Elements.Last;
2983                   end if;
2984
2985                   --  And register this source directory as the new last
2986
2987                   Last_Source_Dir := String_Elements.Last;
2988                   String_Elements.Table (Last_Source_Dir) := Element;
2989                end if;
2990             end;
2991          end if;
2992       end Find_Source_Dirs;
2993
2994    --  Start of processing for Get_Directories
2995
2996    begin
2997       if Current_Verbosity = High then
2998          Write_Line ("Starting to look for directories");
2999       end if;
3000
3001       --  Check the object directory
3002
3003       pragma Assert (Object_Dir.Kind = Single,
3004                      "Object_Dir is not a single string");
3005
3006       --  We set the object directory to its default
3007
3008       Data.Object_Directory   := Data.Directory;
3009       Data.Display_Object_Dir := Data.Display_Directory;
3010
3011       if Object_Dir.Value /= Empty_String then
3012          Get_Name_String (Object_Dir.Value);
3013
3014          if Name_Len = 0 then
3015             Error_Msg
3016               (Project,
3017                "Object_Dir cannot be empty",
3018                Object_Dir.Location);
3019
3020          else
3021             --  We check that the specified object directory does exist
3022
3023             Locate_Directory
3024               (Object_Dir.Value, Data.Display_Directory,
3025                Data.Object_Directory, Data.Display_Object_Dir);
3026
3027             if Data.Object_Directory = No_Name then
3028
3029                --  The object directory does not exist, report an error
3030
3031                Err_Vars.Error_Msg_Name_1 := Object_Dir.Value;
3032                Error_Msg
3033                  (Project,
3034                   "the object directory { cannot be found",
3035                   Data.Location);
3036
3037                --  Do not keep a nil Object_Directory. Set it to the specified
3038                --  (relative or absolute) path. This is for the benefit of
3039                --  tools that recover from errors; for example, these tools
3040                --  could create the non existent directory.
3041
3042                Data.Display_Object_Dir := Object_Dir.Value;
3043                Get_Name_String (Object_Dir.Value);
3044                Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
3045                Data.Object_Directory := Name_Find;
3046             end if;
3047          end if;
3048       end if;
3049
3050       if Current_Verbosity = High then
3051          if Data.Object_Directory = No_Name then
3052             Write_Line ("No object directory");
3053          else
3054             Write_Str ("Object directory: """);
3055             Write_Str (Get_Name_String (Data.Display_Object_Dir));
3056             Write_Line ("""");
3057          end if;
3058       end if;
3059
3060       --  Check the exec directory
3061
3062       pragma Assert (Exec_Dir.Kind = Single,
3063                      "Exec_Dir is not a single string");
3064
3065       --  We set the object directory to its default
3066
3067       Data.Exec_Directory   := Data.Object_Directory;
3068       Data.Display_Exec_Dir := Data.Display_Object_Dir;
3069
3070       if Exec_Dir.Value /= Empty_String then
3071          Get_Name_String (Exec_Dir.Value);
3072
3073          if Name_Len = 0 then
3074             Error_Msg
3075               (Project,
3076                "Exec_Dir cannot be empty",
3077                Exec_Dir.Location);
3078
3079          else
3080             --  We check that the specified object directory
3081             --  does exist.
3082
3083             Locate_Directory
3084               (Exec_Dir.Value, Data.Directory,
3085                Data.Exec_Directory, Data.Display_Exec_Dir);
3086
3087             if Data.Exec_Directory = No_Name then
3088                Err_Vars.Error_Msg_Name_1 := Exec_Dir.Value;
3089                Error_Msg
3090                  (Project,
3091                   "the exec directory { cannot be found",
3092                   Data.Location);
3093             end if;
3094          end if;
3095       end if;
3096
3097       if Current_Verbosity = High then
3098          if Data.Exec_Directory = No_Name then
3099             Write_Line ("No exec directory");
3100          else
3101             Write_Str ("Exec directory: """);
3102             Write_Str (Get_Name_String (Data.Display_Exec_Dir));
3103             Write_Line ("""");
3104          end if;
3105       end if;
3106
3107       --  Look for the source directories
3108
3109       if Current_Verbosity = High then
3110          Write_Line ("Starting to look for source directories");
3111       end if;
3112
3113       pragma Assert (Source_Dirs.Kind = List, "Source_Dirs is not a list");
3114
3115       if Source_Dirs.Default then
3116
3117          --  No Source_Dirs specified: the single source directory
3118          --  is the one containing the project file
3119
3120          String_Elements.Increment_Last;
3121          Data.Source_Dirs := String_Elements.Last;
3122          String_Elements.Table (Data.Source_Dirs) :=
3123            (Value         => Data.Directory,
3124             Display_Value => Data.Display_Directory,
3125             Location      => No_Location,
3126             Flag          => False,
3127             Next          => Nil_String,
3128             Index         => 0);
3129
3130          if Current_Verbosity = High then
3131             Write_Line ("Single source directory:");
3132             Write_Str ("    """);
3133             Write_Str (Get_Name_String (Data.Display_Directory));
3134             Write_Line ("""");
3135          end if;
3136
3137       elsif Source_Dirs.Values = Nil_String then
3138
3139          --  If Source_Dirs is an empty string list, this means
3140          --  that this project contains no source. For projects that
3141          --  don't extend other projects, this also means that there is no
3142          --  need for an object directory, if not specified.
3143
3144          if Data.Extends = No_Project
3145            and then  Data.Object_Directory = Data.Directory
3146          then
3147             Data.Object_Directory := No_Name;
3148          end if;
3149
3150          Data.Source_Dirs           := Nil_String;
3151          Data.Ada_Sources_Present   := False;
3152          Data.Other_Sources_Present := False;
3153
3154       else
3155          declare
3156             Source_Dir : String_List_Id := Source_Dirs.Values;
3157             Element    : String_Element;
3158
3159          begin
3160             --  We will find the source directories for each
3161             --  element of the list
3162
3163             while Source_Dir /= Nil_String loop
3164                Element := String_Elements.Table (Source_Dir);
3165                Find_Source_Dirs (Element.Value, Element.Location);
3166                Source_Dir := Element.Next;
3167             end loop;
3168          end;
3169       end if;
3170
3171       if Current_Verbosity = High then
3172          Write_Line ("Putting source directories in canonical cases");
3173       end if;
3174
3175       declare
3176          Current : String_List_Id := Data.Source_Dirs;
3177          Element : String_Element;
3178
3179       begin
3180          while Current /= Nil_String loop
3181             Element := String_Elements.Table (Current);
3182             if Element.Value /= No_Name then
3183                Get_Name_String (Element.Value);
3184                Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
3185                Element.Value := Name_Find;
3186                String_Elements.Table (Current) := Element;
3187             end if;
3188
3189             Current := Element.Next;
3190          end loop;
3191       end;
3192
3193    end Get_Directories;
3194
3195    ---------------
3196    -- Get_Mains --
3197    ---------------
3198
3199    procedure Get_Mains (Project : Project_Id; Data : in out Project_Data) is
3200       Mains : constant Variable_Value :=
3201                 Prj.Util.Value_Of (Name_Main, Data.Decl.Attributes);
3202
3203    begin
3204       Data.Mains := Mains.Values;
3205
3206       --  If no Mains were specified, and if we are an extending
3207       --  project, inherit the Mains from the project we are extending.
3208
3209       if Mains.Default then
3210          if Data.Extends /= No_Project then
3211             Data.Mains := Projects.Table (Data.Extends).Mains;
3212          end if;
3213
3214       --  In a library project file, Main cannot be specified
3215
3216       elsif Data.Library then
3217          Error_Msg
3218            (Project,
3219             "a library project file cannot have Main specified",
3220             Mains.Location);
3221       end if;
3222    end Get_Mains;
3223
3224    ---------------------------
3225    -- Get_Sources_From_File --
3226    ---------------------------
3227
3228    procedure Get_Sources_From_File
3229      (Path     : String;
3230       Location : Source_Ptr;
3231       Project  : Project_Id)
3232    is
3233       File        : Prj.Util.Text_File;
3234       Line        : String (1 .. 250);
3235       Last        : Natural;
3236       Source_Name : Name_Id;
3237
3238    begin
3239       Source_Names.Reset;
3240
3241       if Current_Verbosity = High then
3242          Write_Str  ("Opening """);
3243          Write_Str  (Path);
3244          Write_Line (""".");
3245       end if;
3246
3247       --  Open the file
3248
3249       Prj.Util.Open (File, Path);
3250
3251       if not Prj.Util.Is_Valid (File) then
3252          Error_Msg (Project, "file does not exist", Location);
3253       else
3254          --  Read the lines one by one
3255
3256          while not Prj.Util.End_Of_File (File) loop
3257             Prj.Util.Get_Line (File, Line, Last);
3258
3259             --  A non empty, non comment line should contain a file name
3260
3261             if Last /= 0
3262               and then (Last = 1 or else Line (1 .. 2) /= "--")
3263             then
3264                --  ??? we should check that there is no directory information
3265
3266                Name_Len := Last;
3267                Name_Buffer (1 .. Name_Len) := Line (1 .. Last);
3268                Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
3269                Source_Name := Name_Find;
3270                Source_Names.Set
3271                  (K => Source_Name,
3272                   E =>
3273                     (Name     => Source_Name,
3274                      Location => Location,
3275                      Found    => False));
3276             end if;
3277          end loop;
3278
3279          Prj.Util.Close (File);
3280
3281       end if;
3282    end Get_Sources_From_File;
3283
3284    --------------
3285    -- Get_Unit --
3286    --------------
3287
3288    procedure Get_Unit
3289      (Canonical_File_Name : Name_Id;
3290       Naming              : Naming_Data;
3291       Exception_Id        : out Ada_Naming_Exception_Id;
3292       Unit_Name           : out Name_Id;
3293       Unit_Kind           : out Spec_Or_Body;
3294       Needs_Pragma        : out Boolean)
3295    is
3296       Info_Id  : Ada_Naming_Exception_Id
3297         := Ada_Naming_Exceptions.Get (Canonical_File_Name);
3298       VMS_Name : Name_Id;
3299
3300    begin
3301       if Info_Id = No_Ada_Naming_Exception then
3302          if Hostparm.OpenVMS then
3303             VMS_Name := Canonical_File_Name;
3304             Get_Name_String (VMS_Name);
3305
3306             if Name_Buffer (Name_Len) = '.' then
3307                Name_Len := Name_Len - 1;
3308                VMS_Name := Name_Find;
3309             end if;
3310
3311             Info_Id := Ada_Naming_Exceptions.Get (VMS_Name);
3312          end if;
3313
3314       end if;
3315
3316       if Info_Id /= No_Ada_Naming_Exception then
3317          Exception_Id := Info_Id;
3318          Unit_Name := No_Name;
3319          Unit_Kind := Specification;
3320          Needs_Pragma := True;
3321          return;
3322       end if;
3323
3324       Needs_Pragma := False;
3325       Exception_Id := No_Ada_Naming_Exception;
3326
3327       Get_Name_String (Canonical_File_Name);
3328
3329       declare
3330          File          : String := Name_Buffer (1 .. Name_Len);
3331          First         : constant Positive := File'First;
3332          Last          : Natural           := File'Last;
3333          Standard_GNAT : Boolean;
3334
3335       begin
3336          Standard_GNAT :=
3337            Naming.Ada_Spec_Suffix = Default_Ada_Spec_Suffix
3338              and then Naming.Ada_Body_Suffix = Default_Ada_Body_Suffix;
3339
3340          --  Check if the end of the file name is Specification_Append
3341
3342          Get_Name_String (Naming.Ada_Spec_Suffix);
3343
3344          if File'Length > Name_Len
3345            and then File (Last - Name_Len + 1 .. Last) =
3346                                                 Name_Buffer (1 .. Name_Len)
3347          then
3348             --  We have a spec
3349
3350             Unit_Kind := Specification;
3351             Last := Last - Name_Len;
3352
3353             if Current_Verbosity = High then
3354                Write_Str  ("   Specification: ");
3355                Write_Line (File (First .. Last));
3356             end if;
3357
3358          else
3359             Get_Name_String (Naming.Ada_Body_Suffix);
3360
3361             --  Check if the end of the file name is Body_Append
3362
3363             if File'Length > Name_Len
3364               and then File (Last - Name_Len + 1 .. Last) =
3365                                                 Name_Buffer (1 .. Name_Len)
3366             then
3367                --  We have a body
3368
3369                Unit_Kind := Body_Part;
3370                Last := Last - Name_Len;
3371
3372                if Current_Verbosity = High then
3373                   Write_Str  ("   Body: ");
3374                   Write_Line (File (First .. Last));
3375                end if;
3376
3377             elsif Naming.Separate_Suffix /= Naming.Ada_Spec_Suffix then
3378                Get_Name_String (Naming.Separate_Suffix);
3379
3380                --  Check if the end of the file name is Separate_Append
3381
3382                if File'Length > Name_Len
3383                  and then File (Last - Name_Len + 1 .. Last) =
3384                                                 Name_Buffer (1 .. Name_Len)
3385                then
3386                   --  We have a separate (a body)
3387
3388                   Unit_Kind := Body_Part;
3389                   Last := Last - Name_Len;
3390
3391                   if Current_Verbosity = High then
3392                      Write_Str  ("   Separate: ");
3393                      Write_Line (File (First .. Last));
3394                   end if;
3395
3396                else
3397                   Last := 0;
3398                end if;
3399
3400             else
3401                Last := 0;
3402             end if;
3403          end if;
3404
3405          if Last = 0 then
3406
3407             --  This is not a source file
3408
3409             Unit_Name := No_Name;
3410             Unit_Kind := Specification;
3411
3412             if Current_Verbosity = High then
3413                Write_Line ("   Not a valid file name.");
3414             end if;
3415
3416             return;
3417          end if;
3418
3419          Get_Name_String (Naming.Dot_Replacement);
3420          Standard_GNAT :=
3421            Standard_GNAT and then Name_Buffer (1 .. Name_Len) = "-";
3422
3423          if Name_Buffer (1 .. Name_Len) /= "." then
3424
3425             --  If Dot_Replacement is not a single dot, then there should
3426             --  not be any dot in the name.
3427
3428             for Index in First .. Last loop
3429                if File (Index) = '.' then
3430                   if Current_Verbosity = High then
3431                      Write_Line
3432                        ("   Not a valid file name (some dot not replaced).");
3433                   end if;
3434
3435                   Unit_Name := No_Name;
3436                   return;
3437
3438                end if;
3439             end loop;
3440
3441             --  Replace the substring Dot_Replacement with dots
3442
3443             declare
3444                Index : Positive := First;
3445
3446             begin
3447                while Index <= Last - Name_Len + 1 loop
3448
3449                   if File (Index .. Index + Name_Len - 1) =
3450                     Name_Buffer (1 .. Name_Len)
3451                   then
3452                      File (Index) := '.';
3453
3454                      if Name_Len > 1 and then Index < Last then
3455                         File (Index + 1 .. Last - Name_Len + 1) :=
3456                           File (Index + Name_Len .. Last);
3457                      end if;
3458
3459                      Last := Last - Name_Len + 1;
3460                   end if;
3461
3462                   Index := Index + 1;
3463                end loop;
3464             end;
3465          end if;
3466
3467          --  Check if the casing is right
3468
3469          declare
3470             Src : String := File (First .. Last);
3471
3472          begin
3473             case Naming.Casing is
3474                when All_Lower_Case =>
3475                   Fixed.Translate
3476                     (Source  => Src,
3477                      Mapping => Lower_Case_Map);
3478
3479                when All_Upper_Case =>
3480                   Fixed.Translate
3481                     (Source  => Src,
3482                      Mapping => Upper_Case_Map);
3483
3484                when Mixed_Case | Unknown =>
3485                   null;
3486             end case;
3487
3488             if Src /= File (First .. Last) then
3489                if Current_Verbosity = High then
3490                   Write_Line ("   Not a valid file name (casing).");
3491                end if;
3492
3493                Unit_Name := No_Name;
3494                return;
3495             end if;
3496
3497             --  We put the name in lower case
3498
3499             Fixed.Translate
3500               (Source  => Src,
3501                Mapping => Lower_Case_Map);
3502
3503             --  In the standard GNAT naming scheme, check for special cases:
3504             --  children or separates of A, G, I or S, and run time sources.
3505
3506             if Standard_GNAT and then Src'Length >= 3 then
3507                declare
3508                   S1 : constant Character := Src (Src'First);
3509                   S2 : constant Character := Src (Src'First + 1);
3510
3511                begin
3512                   if S1 = 'a' or else S1 = 'g'
3513                     or else S1 = 'i' or else S1 = 's'
3514                   then
3515                      --  Children or separates of packages A, G, I or S
3516
3517                      if (Hostparm.OpenVMS and then S2 = '$')
3518                        or else (not Hostparm.OpenVMS and then S2 = '~')
3519                      then
3520                         Src (Src'First + 1) := '.';
3521
3522                      --  If it is potentially a run time source, disable
3523                      --  filling of the mapping file to avoid warnings.
3524
3525                      elsif S2 = '.' then
3526                         Set_Mapping_File_Initial_State_To_Empty;
3527                      end if;
3528
3529                   end if;
3530                end;
3531             end if;
3532
3533             if Current_Verbosity = High then
3534                Write_Str  ("      ");
3535                Write_Line (Src);
3536             end if;
3537
3538             --  Now, we check if this name is a valid unit name
3539
3540             Check_Ada_Name (Name => Src, Unit => Unit_Name);
3541          end;
3542
3543       end;
3544    end Get_Unit;
3545
3546    ----------
3547    -- Hash --
3548    ----------
3549
3550    function Hash (Unit : Unit_Info) return Header_Num is
3551    begin
3552       return Header_Num (Unit.Unit mod 2048);
3553    end Hash;
3554
3555    -----------------------
3556    -- Is_Illegal_Suffix --
3557    -----------------------
3558
3559    function Is_Illegal_Suffix
3560      (Suffix                          : String;
3561       Dot_Replacement_Is_A_Single_Dot : Boolean) return Boolean
3562    is
3563    begin
3564       if Suffix'Length = 0 or else Index (Suffix, ".") = 0 then
3565          return True;
3566       end if;
3567
3568       --  If dot replacement is a single dot, and first character of
3569       --  suffix is also a dot
3570
3571       if Dot_Replacement_Is_A_Single_Dot
3572         and then Suffix (Suffix'First) = '.'
3573       then
3574          for Index in Suffix'First + 1 .. Suffix'Last loop
3575
3576             --  If there is another dot
3577
3578             if Suffix (Index) = '.' then
3579
3580                --  It is illegal to have a letter following the initial dot
3581
3582                return Is_Letter (Suffix (Suffix'First + 1));
3583             end if;
3584          end loop;
3585       end if;
3586
3587       --  Everything is OK
3588
3589       return False;
3590    end Is_Illegal_Suffix;
3591
3592    ----------------------
3593    -- Locate_Directory --
3594    ----------------------
3595
3596    procedure Locate_Directory
3597      (Name    : Name_Id;
3598       Parent  : Name_Id;
3599       Dir     : out Name_Id;
3600       Display : out Name_Id)
3601    is
3602       The_Name   : constant String := Get_Name_String (Name);
3603
3604       The_Parent : constant String :=
3605                      Get_Name_String (Parent) & Directory_Separator;
3606
3607       The_Parent_Last : constant Natural :=
3608                      Compute_Directory_Last (The_Parent);
3609
3610    begin
3611       if Current_Verbosity = High then
3612          Write_Str ("Locate_Directory (""");
3613          Write_Str (The_Name);
3614          Write_Str (""", """);
3615          Write_Str (The_Parent);
3616          Write_Line (""")");
3617       end if;
3618
3619       Dir     := No_Name;
3620       Display := No_Name;
3621
3622       if Is_Absolute_Path (The_Name) then
3623          if Is_Directory (The_Name) then
3624             declare
3625                Normed : constant String :=
3626                           Normalize_Pathname
3627                             (The_Name,
3628                              Resolve_Links  => False,
3629                              Case_Sensitive => True);
3630
3631                Canonical_Path : constant String :=
3632                                   Normalize_Pathname
3633                                     (Normed,
3634                                      Resolve_Links  => True,
3635                                      Case_Sensitive => False);
3636
3637             begin
3638                Name_Len := Normed'Length;
3639                Name_Buffer (1 .. Name_Len) := Normed;
3640                Display := Name_Find;
3641
3642                Name_Len := Canonical_Path'Length;
3643                Name_Buffer (1 .. Name_Len) := Canonical_Path;
3644                Dir := Name_Find;
3645             end;
3646          end if;
3647
3648       else
3649          declare
3650             Full_Path : constant String :=
3651                           The_Parent (The_Parent'First .. The_Parent_Last) &
3652                           The_Name;
3653
3654          begin
3655             if Is_Directory (Full_Path) then
3656                declare
3657                   Normed : constant String :=
3658                              Normalize_Pathname
3659                                (Full_Path,
3660                                 Resolve_Links  => False,
3661                                 Case_Sensitive => True);
3662
3663                   Canonical_Path : constant String :=
3664                                      Normalize_Pathname
3665                                        (Normed,
3666                                         Resolve_Links  => True,
3667                                         Case_Sensitive => False);
3668
3669                begin
3670                   Name_Len := Normed'Length;
3671                   Name_Buffer (1 .. Name_Len) := Normed;
3672                   Display := Name_Find;
3673
3674                   Name_Len := Canonical_Path'Length;
3675                   Name_Buffer (1 .. Name_Len) := Canonical_Path;
3676                   Dir := Name_Find;
3677                end;
3678             end if;
3679          end;
3680       end if;
3681    end Locate_Directory;
3682
3683    ----------------------
3684    -- Look_For_Sources --
3685    ----------------------
3686
3687    procedure Look_For_Sources
3688      (Project      : Project_Id;
3689       Data         : in out Project_Data;
3690       Follow_Links : Boolean)
3691    is
3692       procedure Get_Path_Names_And_Record_Sources (Follow_Links : Boolean);
3693       --  Find the path names of the source files in the Source_Names table
3694       --  in the source directories and record those that are Ada sources.
3695
3696       procedure Get_Sources_From_File
3697         (Path     : String;
3698          Location : Source_Ptr);
3699       --  Get the sources of a project from a text file
3700
3701       ---------------------------------------
3702       -- Get_Path_Names_And_Record_Sources --
3703       ---------------------------------------
3704
3705       procedure Get_Path_Names_And_Record_Sources (Follow_Links : Boolean) is
3706          Source_Dir : String_List_Id := Data.Source_Dirs;
3707          Element    : String_Element;
3708          Path       : Name_Id;
3709
3710          Dir      : Dir_Type;
3711          Name     : Name_Id;
3712          Canonical_Name : Name_Id;
3713          Name_Str : String (1 .. 1_024);
3714          Last     : Natural := 0;
3715          NL       : Name_Location;
3716
3717          Current_Source : String_List_Id := Nil_String;
3718
3719          First_Error : Boolean := True;
3720
3721          Source_Recorded : Boolean := False;
3722
3723       begin
3724          --  We look in all source directories for the file names in the
3725          --  hash table Source_Names
3726
3727          while Source_Dir /= Nil_String loop
3728             Source_Recorded := False;
3729             Element := String_Elements.Table (Source_Dir);
3730
3731             declare
3732                Dir_Path : constant String := Get_Name_String (Element.Value);
3733             begin
3734                if Current_Verbosity = High then
3735                   Write_Str ("checking directory """);
3736                   Write_Str (Dir_Path);
3737                   Write_Line ("""");
3738                end if;
3739
3740                Open (Dir, Dir_Path);
3741
3742                loop
3743                   Read (Dir, Name_Str, Last);
3744                   exit when Last = 0;
3745                   Name_Len := Last;
3746                   Name_Buffer (1 .. Name_Len) := Name_Str (1 .. Last);
3747                   Name := Name_Find;
3748                   Canonical_Case_File_Name (Name_Str (1 .. Last));
3749                   Name_Len := Last;
3750                   Name_Buffer (1 .. Name_Len) := Name_Str (1 .. Last);
3751                   Canonical_Name := Name_Find;
3752                   NL := Source_Names.Get (Canonical_Name);
3753
3754                   if NL /= No_Name_Location and then not NL.Found then
3755                      NL.Found := True;
3756                      Source_Names.Set (Canonical_Name, NL);
3757                      Name_Len := Dir_Path'Length;
3758                      Name_Buffer (1 .. Name_Len) := Dir_Path;
3759
3760                      if Name_Buffer (Name_Len) /= Directory_Separator then
3761                         Add_Char_To_Name_Buffer (Directory_Separator);
3762                      end if;
3763
3764                      Add_Str_To_Name_Buffer (Name_Str (1 .. Last));
3765                      Path := Name_Find;
3766
3767                      if Current_Verbosity = High then
3768                         Write_Str  ("  found ");
3769                         Write_Line (Get_Name_String (Name));
3770                      end if;
3771
3772                      --  Register the source if it is an Ada compilation unit
3773
3774                      Record_Ada_Source
3775                        (File_Name       => Name,
3776                         Path_Name       => Path,
3777                         Project         => Project,
3778                         Data            => Data,
3779                         Location        => NL.Location,
3780                         Current_Source  => Current_Source,
3781                         Source_Recorded => Source_Recorded,
3782                         Follow_Links    => Follow_Links);
3783                   end if;
3784                end loop;
3785
3786                Close (Dir);
3787             end;
3788
3789             if Source_Recorded then
3790                String_Elements.Table (Source_Dir).Flag := True;
3791             end if;
3792
3793             Source_Dir := Element.Next;
3794          end loop;
3795
3796          --  It is an error if a source file name in a source list or
3797          --  in a source list file is not found.
3798
3799          NL := Source_Names.Get_First;
3800
3801          while NL /= No_Name_Location loop
3802             if not NL.Found then
3803                Err_Vars.Error_Msg_Name_1 := NL.Name;
3804
3805                if First_Error then
3806                   Error_Msg
3807                     (Project,
3808                      "source file { cannot be found",
3809                      NL.Location);
3810                   First_Error := False;
3811
3812                else
3813                   Error_Msg
3814                     (Project,
3815                      "\source file { cannot be found",
3816                      NL.Location);
3817                end if;
3818             end if;
3819
3820             NL := Source_Names.Get_Next;
3821          end loop;
3822       end Get_Path_Names_And_Record_Sources;
3823
3824       ---------------------------
3825       -- Get_Sources_From_File --
3826       ---------------------------
3827
3828       procedure Get_Sources_From_File
3829         (Path     : String;
3830          Location : Source_Ptr)
3831       is
3832       begin
3833          --  Get the list of sources from the file and put them in hash table
3834          --  Source_Names.
3835
3836          Get_Sources_From_File (Path, Location, Project);
3837
3838          --  Look in the source directories to find those sources
3839
3840          Get_Path_Names_And_Record_Sources (Follow_Links);
3841
3842          --  We should have found at least one source.
3843          --  If not, report an error.
3844
3845          if Data.Sources = Nil_String then
3846             Error_Msg (Project,
3847                        "there are no Ada sources in this project",
3848                        Location);
3849          end if;
3850       end Get_Sources_From_File;
3851
3852    begin
3853       if Data.Ada_Sources_Present then
3854          declare
3855             Sources          : constant Variable_Value :=
3856                                  Util.Value_Of
3857                                    (Name_Source_Files,
3858                                     Data.Decl.Attributes);
3859
3860             Source_List_File : constant Variable_Value :=
3861                                  Util.Value_Of
3862                                    (Name_Source_List_File,
3863                                     Data.Decl.Attributes);
3864
3865             Locally_Removed  : constant Variable_Value :=
3866                                  Util.Value_Of
3867                                    (Name_Locally_Removed_Files,
3868                                     Data.Decl.Attributes);
3869
3870          begin
3871             pragma Assert
3872               (Sources.Kind = List,
3873                "Source_Files is not a list");
3874
3875             pragma Assert
3876               (Source_List_File.Kind = Single,
3877                "Source_List_File is not a single string");
3878
3879             if not Sources.Default then
3880                if not Source_List_File.Default then
3881                   Error_Msg
3882                     (Project,
3883                      "?both variables source_files and " &
3884                      "source_list_file are present",
3885                      Source_List_File.Location);
3886                end if;
3887
3888                --  Sources is a list of file names
3889
3890                declare
3891                   Current  : String_List_Id := Sources.Values;
3892                   Element  : String_Element;
3893                   Location : Source_Ptr;
3894                   Name     : Name_Id;
3895
3896                begin
3897                   Source_Names.Reset;
3898
3899                   Data.Ada_Sources_Present := Current /= Nil_String;
3900
3901                   while Current /= Nil_String loop
3902                      Element := String_Elements.Table (Current);
3903                      Get_Name_String (Element.Value);
3904                      Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
3905                      Name := Name_Find;
3906
3907                      --  If the element has no location, then use the
3908                      --  location of Sources to report possible errors.
3909
3910                      if Element.Location = No_Location then
3911                         Location := Sources.Location;
3912                      else
3913                         Location := Element.Location;
3914                      end if;
3915
3916                      Source_Names.Set
3917                        (K => Name,
3918                         E =>
3919                           (Name     => Name,
3920                            Location => Location,
3921                            Found    => False));
3922
3923                      Current := Element.Next;
3924                   end loop;
3925
3926                   Get_Path_Names_And_Record_Sources (Follow_Links);
3927                end;
3928
3929                --  No source_files specified
3930
3931                --  We check Source_List_File has been specified
3932
3933             elsif not Source_List_File.Default then
3934
3935                --  Source_List_File is the name of the file
3936                --  that contains the source file names
3937
3938                declare
3939                   Source_File_Path_Name : constant String :=
3940                                             Path_Name_Of
3941                                               (Source_List_File.Value,
3942                                                Data.Directory);
3943
3944                begin
3945                   if Source_File_Path_Name'Length = 0 then
3946                      Err_Vars.Error_Msg_Name_1 := Source_List_File.Value;
3947                      Error_Msg
3948                        (Project,
3949                         "file with sources { does not exist",
3950                         Source_List_File.Location);
3951
3952                   else
3953                      Get_Sources_From_File
3954                        (Source_File_Path_Name,
3955                         Source_List_File.Location);
3956                   end if;
3957                end;
3958
3959             else
3960                --  Neither Source_Files nor Source_List_File has been
3961                --  specified. Find all the files that satisfy the naming
3962                --  scheme in all the source directories.
3963
3964                Find_Sources
3965                  (Project, Data, Ada_Language_Index, Follow_Links);
3966             end if;
3967
3968             --  If there are sources that are locally removed, mark them as
3969             --  such in the Units table.
3970
3971             if not Locally_Removed.Default then
3972
3973                --  Sources can be locally removed only in extending
3974                --  project files.
3975
3976                if Data.Extends = No_Project then
3977                   Error_Msg
3978                     (Project,
3979                      "Locally_Removed_Files can only be used " &
3980                      "in an extending project file",
3981                      Locally_Removed.Location);
3982
3983                else
3984                   declare
3985                      Current  : String_List_Id := Locally_Removed.Values;
3986                      Element  : String_Element;
3987                      Location : Source_Ptr;
3988                      OK       : Boolean;
3989                      Unit     : Unit_Data;
3990                      Name     : Name_Id;
3991                      Extended : Project_Id;
3992
3993                   begin
3994                      while Current /= Nil_String loop
3995                         Element := String_Elements.Table (Current);
3996                         Get_Name_String (Element.Value);
3997                         Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
3998                         Name := Name_Find;
3999
4000                         --  If the element has no location, then use the
4001                         --  location of Locally_Removed to report
4002                         --  possible errors.
4003
4004                         if Element.Location = No_Location then
4005                            Location := Locally_Removed.Location;
4006                         else
4007                            Location := Element.Location;
4008                         end if;
4009
4010                         OK := False;
4011
4012                         for Index in 1 .. Units.Last loop
4013                            Unit := Units.Table (Index);
4014
4015                            if Unit.File_Names (Specification).Name = Name then
4016                               OK := True;
4017
4018                               --  Check that this is from a project that
4019                               --  the current project extends, but not the
4020                               --  current project.
4021
4022                               Extended := Unit.File_Names
4023                                 (Specification).Project;
4024
4025                               if Extended = Project then
4026                                  Error_Msg
4027                                    (Project,
4028                                     "cannot remove a source " &
4029                                     "of the same project",
4030                                     Location);
4031
4032                               elsif
4033                                 Project_Extends (Project, Extended)
4034                               then
4035                                  Unit.File_Names
4036                                    (Specification).Path := Slash;
4037                                  Unit.File_Names
4038                                    (Specification).Needs_Pragma := False;
4039                                  Units.Table (Index) := Unit;
4040                                  Add_Forbidden_File_Name
4041                                    (Unit.File_Names (Specification).Name);
4042                                  exit;
4043
4044                               else
4045                                  Error_Msg
4046                                    (Project,
4047                                     "cannot remove a source from " &
4048                                     "another project",
4049                                     Location);
4050                               end if;
4051
4052                            elsif
4053                              Unit.File_Names (Body_Part).Name = Name
4054                            then
4055                               OK := True;
4056
4057                               --  Check that this is from a project that
4058                               --  the current project extends, but not the
4059                               --  current project.
4060
4061                               Extended := Unit.File_Names
4062                                 (Body_Part).Project;
4063
4064                               if Extended = Project then
4065                                  Error_Msg
4066                                    (Project,
4067                                     "cannot remove a source " &
4068                                     "of the same project",
4069                                     Location);
4070
4071                               elsif
4072                                 Project_Extends (Project, Extended)
4073                               then
4074                                  Unit.File_Names (Body_Part).Path := Slash;
4075                                  Unit.File_Names (Body_Part).Needs_Pragma
4076                                    := False;
4077                                  Units.Table (Index) := Unit;
4078                                  Add_Forbidden_File_Name
4079                                    (Unit.File_Names (Body_Part).Name);
4080                                  exit;
4081                               end if;
4082
4083                            end if;
4084                         end loop;
4085
4086                         if not OK then
4087                            Err_Vars.Error_Msg_Name_1 := Name;
4088                            Error_Msg (Project, "unknown file {", Location);
4089                         end if;
4090
4091                         Current := Element.Next;
4092                      end loop;
4093                   end;
4094                end if;
4095             end if;
4096          end;
4097       end if;
4098
4099       if Data.Other_Sources_Present then
4100
4101          --  Set Source_Present to False. It will be set back to True
4102          --  whenever a source is found.
4103
4104          Data.Other_Sources_Present := False;
4105          for Lang in Ada_Language_Index + 1 .. Last_Language_Index loop
4106
4107             --  For each language (other than Ada) in the project file
4108
4109             if Is_Present (Lang, Data) then
4110
4111                --  Reset the indication that there are sources of this
4112                --  language. It will be set back to True whenever we find a
4113                --  source of the language.
4114
4115                Set (Lang, False, Data);
4116
4117                --  First, get the source suffix for the language
4118
4119                Set (Suffix       => Suffix_For (Lang, Data.Naming),
4120                     For_Language => Lang,
4121                     In_Project   => Data);
4122
4123                --  Then, deal with the naming exceptions, if any
4124
4125                Source_Names.Reset;
4126
4127                declare
4128                   Naming_Exceptions : constant Variable_Value :=
4129                     Value_Of
4130                       (Index     => Language_Names.Table (Lang),
4131                        Src_Index => 0,
4132                        In_Array  => Data.Naming.Implementation_Exceptions);
4133                   Element_Id        : String_List_Id;
4134                   Element           : String_Element;
4135                   File_Id           : Name_Id;
4136                   Source_Found      : Boolean := False;
4137
4138                begin
4139                   --  If there are naming exceptions, look through them one
4140                   --  by one.
4141
4142                   if Naming_Exceptions /= Nil_Variable_Value then
4143                      Element_Id := Naming_Exceptions.Values;
4144
4145                      while Element_Id /= Nil_String loop
4146                         Element := String_Elements.Table (Element_Id);
4147                         Get_Name_String (Element.Value);
4148                         Canonical_Case_File_Name
4149                           (Name_Buffer (1 .. Name_Len));
4150                         File_Id := Name_Find;
4151
4152                         --  Put each naming exception in the Source_Names
4153                         --  hash table, but if there are repetition, don't
4154                         --  bother after the first instance.
4155
4156                         if
4157                           Source_Names.Get (File_Id) = No_Name_Location
4158                         then
4159                            Source_Found := True;
4160                            Source_Names.Set
4161                              (File_Id,
4162                               (Name     => File_Id,
4163                                Location => Element.Location,
4164                                Found    => False));
4165                         end if;
4166
4167                         Element_Id := Element.Next;
4168                      end loop;
4169
4170                      --  If there is at least one naming exception, record
4171                      --  those that are found in the source directories.
4172
4173                      if Source_Found then
4174                         Record_Other_Sources
4175                           (Project           => Project,
4176                            Data              => Data,
4177                            Language          => Lang,
4178                            Naming_Exceptions => True);
4179                      end if;
4180
4181                   end if;
4182                end;
4183
4184                --  Now, check if a list of sources is declared either through
4185                --  a string list (attribute Source_Files) or a text file
4186                --  (attribute Source_List_File). If a source list is declared,
4187                --  we will consider only those naming exceptions that are
4188                --  on the list.
4189
4190                declare
4191                   Sources          : constant Variable_Value :=
4192                                        Util.Value_Of
4193                                          (Name_Source_Files,
4194                                           Data.Decl.Attributes);
4195
4196                   Source_List_File : constant Variable_Value :=
4197                                        Util.Value_Of
4198                                          (Name_Source_List_File,
4199                                           Data.Decl.Attributes);
4200
4201                begin
4202                   pragma Assert
4203                     (Sources.Kind = List,
4204                      "Source_Files is not a list");
4205
4206                   pragma Assert
4207                     (Source_List_File.Kind = Single,
4208                      "Source_List_File is not a single string");
4209
4210                   if not Sources.Default then
4211                      if not Source_List_File.Default then
4212                         Error_Msg
4213                           (Project,
4214                            "?both variables source_files and " &
4215                            "source_list_file are present",
4216                            Source_List_File.Location);
4217                      end if;
4218
4219                      --  Sources is a list of file names
4220
4221                      declare
4222                         Current  : String_List_Id := Sources.Values;
4223                         Element  : String_Element;
4224                         Location : Source_Ptr;
4225                         Name     : Name_Id;
4226
4227                      begin
4228                         Source_Names.Reset;
4229
4230                         --  Put all the sources in the Source_Names hash table
4231
4232                         while Current /= Nil_String loop
4233                            Element := String_Elements.Table (Current);
4234                            Get_Name_String (Element.Value);
4235                            Canonical_Case_File_Name
4236                              (Name_Buffer (1 .. Name_Len));
4237                            Name := Name_Find;
4238
4239                            --  If the element has no location, then use the
4240                            --  location of Sources to report possible errors.
4241
4242                            if Element.Location = No_Location then
4243                               Location := Sources.Location;
4244                            else
4245                               Location := Element.Location;
4246                            end if;
4247
4248                            Source_Names.Set
4249                              (K => Name,
4250                               E =>
4251                                 (Name     => Name,
4252                                  Location => Location,
4253                                  Found    => False));
4254
4255                            Current := Element.Next;
4256                         end loop;
4257
4258                         --  And look for their directories
4259
4260                         Record_Other_Sources
4261                           (Project           => Project,
4262                            Data              => Data,
4263                            Language          => Lang,
4264                            Naming_Exceptions => False);
4265                      end;
4266
4267                      --  No source_files specified
4268
4269                      --  We check if Source_List_File has been specified
4270
4271                   elsif not Source_List_File.Default then
4272
4273                      --  Source_List_File is the name of the file
4274                      --  that contains the source file names
4275
4276                      declare
4277                         Source_File_Path_Name : constant String :=
4278                           Path_Name_Of
4279                             (Source_List_File.Value,
4280                              Data.Directory);
4281
4282                      begin
4283                         if Source_File_Path_Name'Length = 0 then
4284                            Err_Vars.Error_Msg_Name_1 :=
4285                              Source_List_File.Value;
4286                            Error_Msg
4287                              (Project,
4288                               "file with sources { does not exist",
4289                               Source_List_File.Location);
4290
4291                         else
4292                            --  Read the file, putting each source in the
4293                            --  Source_Names hash table.
4294
4295                            Get_Sources_From_File
4296                              (Source_File_Path_Name,
4297                               Source_List_File.Location,
4298                               Project);
4299
4300                            --  And look for their directories
4301
4302                            Record_Other_Sources
4303                              (Project           => Project,
4304                               Data              => Data,
4305                               Language          => Lang,
4306                               Naming_Exceptions => False);
4307                         end if;
4308                      end;
4309
4310                   --  Neither Source_Files nor Source_List_File was specified
4311
4312                   else
4313                      --  Find all the files that satisfy the naming scheme in
4314                      --  all the source directories. All the naming exceptions
4315                      --  that effectively exist are also part of the source
4316                      --  of this language.
4317
4318                      Find_Sources (Project, Data, Lang);
4319                   end if;
4320                end;
4321             end if;
4322          end loop;
4323       end if;
4324    end Look_For_Sources;
4325
4326    ------------------
4327    -- Path_Name_Of --
4328    ------------------
4329
4330    function Path_Name_Of
4331      (File_Name : Name_Id;
4332       Directory : Name_Id) return String
4333    is
4334       Result : String_Access;
4335
4336       The_Directory : constant String := Get_Name_String (Directory);
4337
4338    begin
4339       Get_Name_String (File_Name);
4340       Result := Locate_Regular_File
4341         (File_Name => Name_Buffer (1 .. Name_Len),
4342          Path      => The_Directory);
4343
4344       if Result = null then
4345          return "";
4346       else
4347          Canonical_Case_File_Name (Result.all);
4348          return Result.all;
4349       end if;
4350    end Path_Name_Of;
4351
4352    -------------------------------
4353    -- Prepare_Ada_Naming_Exceptions --
4354    -------------------------------
4355
4356    procedure Prepare_Ada_Naming_Exceptions
4357      (List : Array_Element_Id;
4358       Kind : Spec_Or_Body)
4359    is
4360       Current : Array_Element_Id := List;
4361       Element : Array_Element;
4362
4363       Unit : Unit_Info;
4364
4365    begin
4366       --  Traverse the list
4367
4368       while Current /= No_Array_Element loop
4369          Element := Array_Elements.Table (Current);
4370
4371          if Element.Index /= No_Name then
4372             Unit :=
4373               (Kind => Kind,
4374                Unit => Element.Index,
4375                Next => No_Ada_Naming_Exception);
4376             Reverse_Ada_Naming_Exceptions.Set
4377               (Unit, (Element.Value.Value, Element.Value.Index));
4378             Unit.Next := Ada_Naming_Exceptions.Get (Element.Value.Value);
4379             Ada_Naming_Exception_Table.Increment_Last;
4380             Ada_Naming_Exception_Table.Table
4381               (Ada_Naming_Exception_Table.Last) := Unit;
4382             Ada_Naming_Exceptions.Set
4383               (Element.Value.Value, Ada_Naming_Exception_Table.Last);
4384          end if;
4385
4386          Current := Element.Next;
4387       end loop;
4388    end Prepare_Ada_Naming_Exceptions;
4389
4390    ---------------------
4391    -- Project_Extends --
4392    ---------------------
4393
4394    function Project_Extends
4395      (Extending : Project_Id;
4396       Extended  : Project_Id) return Boolean
4397    is
4398       Current : Project_Id := Extending;
4399    begin
4400       loop
4401          if Current = No_Project then
4402             return False;
4403
4404          elsif Current = Extended then
4405             return True;
4406          end if;
4407
4408          Current := Projects.Table (Current).Extends;
4409       end loop;
4410    end Project_Extends;
4411
4412    -----------------------
4413    -- Record_Ada_Source --
4414    -----------------------
4415
4416    procedure Record_Ada_Source
4417      (File_Name       : Name_Id;
4418       Path_Name       : Name_Id;
4419       Project         : Project_Id;
4420       Data            : in out Project_Data;
4421       Location        : Source_Ptr;
4422       Current_Source  : in out String_List_Id;
4423       Source_Recorded : in out Boolean;
4424       Follow_Links    : Boolean)
4425    is
4426       Canonical_File_Name : Name_Id;
4427       Canonical_Path_Name : Name_Id;
4428
4429       Exception_Id : Ada_Naming_Exception_Id;
4430       Unit_Name    : Name_Id;
4431       Unit_Kind    : Spec_Or_Body;
4432       Unit_Index   : Int := 0;
4433       Info         : Unit_Info;
4434       Name_Index   : Name_And_Index;
4435       Needs_Pragma : Boolean;
4436
4437       The_Location    : Source_Ptr              := Location;
4438       Previous_Source : constant String_List_Id := Current_Source;
4439       Except_Name     : Name_And_Index          := No_Name_And_Index;
4440
4441       Unit_Prj : Unit_Project;
4442
4443       File_Name_Recorded : Boolean := False;
4444
4445    begin
4446       Get_Name_String (File_Name);
4447       Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
4448       Canonical_File_Name := Name_Find;
4449
4450       declare
4451          Canonical_Path : constant String :=
4452                             Normalize_Pathname
4453                               (Get_Name_String (Path_Name),
4454                                Resolve_Links => Follow_Links,
4455                                Case_Sensitive => False);
4456       begin
4457          Name_Len := 0;
4458          Add_Str_To_Name_Buffer (Canonical_Path);
4459          Canonical_Path_Name := Name_Find;
4460       end;
4461
4462       --  Find out the unit name, the unit kind and if it needs
4463       --  a specific SFN pragma.
4464
4465       Get_Unit
4466         (Canonical_File_Name => Canonical_File_Name,
4467          Naming              => Data.Naming,
4468          Exception_Id        => Exception_Id,
4469          Unit_Name           => Unit_Name,
4470          Unit_Kind           => Unit_Kind,
4471          Needs_Pragma        => Needs_Pragma);
4472
4473       if Exception_Id = No_Ada_Naming_Exception and then
4474         Unit_Name = No_Name
4475       then
4476          if Current_Verbosity = High then
4477             Write_Str  ("   """);
4478             Write_Str  (Get_Name_String (Canonical_File_Name));
4479             Write_Line (""" is not a valid source file name (ignored).");
4480          end if;
4481
4482       else
4483          --  Check to see if the source has been hidden by an exception,
4484          --  but only if it is not an exception.
4485
4486          if not Needs_Pragma then
4487             Except_Name :=
4488               Reverse_Ada_Naming_Exceptions.Get
4489                 ((Unit_Kind, Unit_Name, No_Ada_Naming_Exception));
4490
4491             if Except_Name /= No_Name_And_Index then
4492                if Current_Verbosity = High then
4493                   Write_Str  ("   """);
4494                   Write_Str  (Get_Name_String (Canonical_File_Name));
4495                   Write_Str  (""" contains a unit that is found in """);
4496                   Write_Str  (Get_Name_String (Except_Name.Name));
4497                   Write_Line (""" (ignored).");
4498                end if;
4499
4500                --  The file is not included in the source of the project,
4501                --  because it is hidden by the exception.
4502                --  So, there is nothing else to do.
4503
4504                return;
4505             end if;
4506          end if;
4507
4508          loop
4509             if Exception_Id /= No_Ada_Naming_Exception then
4510                Info := Ada_Naming_Exception_Table.Table (Exception_Id);
4511                Exception_Id := Info.Next;
4512                Info.Next := No_Ada_Naming_Exception;
4513                Name_Index := Reverse_Ada_Naming_Exceptions.Get (Info);
4514
4515                Unit_Name  := Info.Unit;
4516                Unit_Index := Name_Index.Index;
4517                Unit_Kind  := Info.Kind;
4518             end if;
4519
4520             --  Put the file name in the list of sources of the project
4521
4522             if not File_Name_Recorded then
4523                String_Elements.Increment_Last;
4524                String_Elements.Table (String_Elements.Last) :=
4525                  (Value         => Canonical_File_Name,
4526                   Display_Value => File_Name,
4527                   Location      => No_Location,
4528                   Flag          => False,
4529                   Next          => Nil_String,
4530                   Index         => Unit_Index);
4531             end if;
4532
4533             if Current_Source = Nil_String then
4534                Data.Sources := String_Elements.Last;
4535             else
4536                String_Elements.Table (Current_Source).Next :=
4537                  String_Elements.Last;
4538             end if;
4539
4540             Current_Source := String_Elements.Last;
4541
4542             --  Put the unit in unit list
4543
4544             declare
4545                The_Unit      : Unit_Id := Units_Htable.Get (Unit_Name);
4546                The_Unit_Data : Unit_Data;
4547
4548             begin
4549                if Current_Verbosity = High then
4550                   Write_Str  ("Putting ");
4551                   Write_Str  (Get_Name_String (Unit_Name));
4552                   Write_Line (" in the unit list.");
4553                end if;
4554
4555                --  The unit is already in the list, but may be it is
4556                --  only the other unit kind (spec or body), or what is
4557                --  in the unit list is a unit of a project we are extending.
4558
4559                if The_Unit /= Prj.Com.No_Unit then
4560                   The_Unit_Data := Units.Table (The_Unit);
4561
4562                   if The_Unit_Data.File_Names (Unit_Kind).Name = No_Name
4563                     or else Project_Extends
4564                       (Data.Extends,
4565                        The_Unit_Data.File_Names (Unit_Kind).Project)
4566                   then
4567                      if The_Unit_Data.File_Names (Unit_Kind).Path = Slash then
4568                         Remove_Forbidden_File_Name
4569                           (The_Unit_Data.File_Names (Unit_Kind).Name);
4570                      end if;
4571
4572                      --  Record the file name in the hash table Files_Htable
4573
4574                      Unit_Prj := (Unit => The_Unit, Project => Project);
4575                      Files_Htable.Set (Canonical_File_Name, Unit_Prj);
4576
4577                      The_Unit_Data.File_Names (Unit_Kind) :=
4578                        (Name         => Canonical_File_Name,
4579                         Index        => Unit_Index,
4580                         Display_Name => File_Name,
4581                         Path         => Canonical_Path_Name,
4582                         Display_Path => Path_Name,
4583                         Project      => Project,
4584                         Needs_Pragma => Needs_Pragma);
4585                      Units.Table (The_Unit) := The_Unit_Data;
4586                      Source_Recorded := True;
4587
4588                   elsif The_Unit_Data.File_Names (Unit_Kind).Project = Project
4589                     and then (Data.Known_Order_Of_Source_Dirs or else
4590                               The_Unit_Data.File_Names (Unit_Kind).Path =
4591                                 Canonical_Path_Name)
4592                   then
4593                      if Previous_Source = Nil_String then
4594                         Data.Sources := Nil_String;
4595                      else
4596                         String_Elements.Table (Previous_Source).Next :=
4597                           Nil_String;
4598                         String_Elements.Decrement_Last;
4599                      end if;
4600
4601                      Current_Source := Previous_Source;
4602
4603                   else
4604                      --  It is an error to have two units with the same name
4605                      --  and the same kind (spec or body).
4606
4607                      if The_Location = No_Location then
4608                         The_Location := Projects.Table (Project).Location;
4609                      end if;
4610
4611                      Err_Vars.Error_Msg_Name_1 := Unit_Name;
4612                      Error_Msg (Project, "duplicate source {", The_Location);
4613
4614                      Err_Vars.Error_Msg_Name_1 :=
4615                        Projects.Table
4616                          (The_Unit_Data.File_Names (Unit_Kind).Project).Name;
4617                      Err_Vars.Error_Msg_Name_2 :=
4618                        The_Unit_Data.File_Names (Unit_Kind).Path;
4619                      Error_Msg
4620                        (Project, "\   project file {, {", The_Location);
4621
4622                      Err_Vars.Error_Msg_Name_1 :=
4623                        Projects.Table (Project).Name;
4624                      Err_Vars.Error_Msg_Name_2 := Canonical_Path_Name;
4625                      Error_Msg
4626                        (Project, "\   project file {, {", The_Location);
4627                   end if;
4628
4629                --  It is a new unit, create a new record
4630
4631                else
4632                   --  First, check if there is no other unit with this file
4633                   --  name in another project. If it is, report an error.
4634                   --  Of course, we do that only for the first unit in the
4635                   --  source file.
4636
4637                   Unit_Prj := Files_Htable.Get (Canonical_File_Name);
4638
4639                   if not File_Name_Recorded and then
4640                     Unit_Prj /= No_Unit_Project
4641                   then
4642                      Error_Msg_Name_1 := File_Name;
4643                      Error_Msg_Name_2 :=
4644                        Projects.Table (Unit_Prj.Project).Name;
4645                      Error_Msg
4646                        (Project,
4647                         "{ is already a source of project {",
4648                         Location);
4649
4650                   else
4651                      Units.Increment_Last;
4652                      The_Unit := Units.Last;
4653                      Units_Htable.Set (Unit_Name, The_Unit);
4654                      Unit_Prj := (Unit => The_Unit, Project => Project);
4655                      Files_Htable.Set (Canonical_File_Name, Unit_Prj);
4656                      The_Unit_Data.Name := Unit_Name;
4657                      The_Unit_Data.File_Names (Unit_Kind) :=
4658                        (Name         => Canonical_File_Name,
4659                         Index        => Unit_Index,
4660                         Display_Name => File_Name,
4661                         Path         => Canonical_Path_Name,
4662                         Display_Path => Path_Name,
4663                         Project      => Project,
4664                         Needs_Pragma => Needs_Pragma);
4665                      Units.Table (The_Unit) := The_Unit_Data;
4666                      Source_Recorded := True;
4667                   end if;
4668                end if;
4669             end;
4670
4671             exit when Exception_Id = No_Ada_Naming_Exception;
4672             File_Name_Recorded := True;
4673          end loop;
4674       end if;
4675    end Record_Ada_Source;
4676
4677    --------------------------
4678    -- Record_Other_Sources --
4679    --------------------------
4680
4681    procedure Record_Other_Sources
4682      (Project           : Project_Id;
4683       Data              : in out Project_Data;
4684       Language          : Language_Index;
4685       Naming_Exceptions : Boolean)
4686    is
4687       Source_Dir : String_List_Id := Data.Source_Dirs;
4688       Element    : String_Element;
4689       Path       : Name_Id;
4690
4691       Dir            : Dir_Type;
4692       Canonical_Name : Name_Id;
4693
4694       Name_Str : String (1 .. 1_024);
4695       Last     : Natural := 0;
4696       NL       : Name_Location;
4697
4698       First_Error : Boolean := True;
4699
4700       Suffix : constant String := Body_Suffix_Of (Language, Data);
4701
4702    begin
4703       while Source_Dir /= Nil_String loop
4704          Element := String_Elements.Table (Source_Dir);
4705
4706          declare
4707             Dir_Path : constant String := Get_Name_String (Element.Value);
4708
4709          begin
4710             if Current_Verbosity = High then
4711                Write_Str ("checking directory """);
4712                Write_Str (Dir_Path);
4713                Write_Str (""" for ");
4714
4715                if Naming_Exceptions then
4716                   Write_Str ("naming exceptions");
4717
4718                else
4719                   Write_Str ("sources");
4720                end if;
4721
4722                Write_Str (" of Language ");
4723                Display_Language_Name (Language);
4724             end if;
4725
4726             Open (Dir, Dir_Path);
4727
4728             loop
4729                Read (Dir, Name_Str, Last);
4730                exit when Last = 0;
4731
4732                if Is_Regular_File
4733                  (Dir_Path & Directory_Separator & Name_Str (1 .. Last))
4734                then
4735                   Name_Len := Last;
4736                   Name_Buffer (1 .. Name_Len) := Name_Str (1 .. Last);
4737                   Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
4738                   Canonical_Name := Name_Find;
4739                   NL := Source_Names.Get (Canonical_Name);
4740
4741                   if NL /= No_Name_Location then
4742                      if NL.Found then
4743                         if not Data.Known_Order_Of_Source_Dirs then
4744                            Error_Msg_Name_1 := Canonical_Name;
4745                            Error_Msg
4746                              (Project,
4747                               "{ is found in several source directories",
4748                               NL.Location);
4749                         end if;
4750
4751                      else
4752                         NL.Found := True;
4753                         Source_Names.Set (Canonical_Name, NL);
4754                         Name_Len := Dir_Path'Length;
4755                         Name_Buffer (1 .. Name_Len) := Dir_Path;
4756                         Add_Char_To_Name_Buffer (Directory_Separator);
4757                         Add_Str_To_Name_Buffer (Name_Str (1 .. Last));
4758                         Path := Name_Find;
4759
4760                         Check_For_Source
4761                           (File_Name        => Canonical_Name,
4762                            Path_Name        => Path,
4763                            Project          => Project,
4764                            Data             => Data,
4765                            Location         => NL.Location,
4766                            Language         => Language,
4767                            Suffix           => Suffix,
4768                            Naming_Exception => Naming_Exceptions);
4769                      end if;
4770                   end if;
4771                end if;
4772             end loop;
4773
4774             Close (Dir);
4775          end;
4776
4777          Source_Dir := Element.Next;
4778       end loop;
4779
4780       if not Naming_Exceptions then
4781          NL := Source_Names.Get_First;
4782
4783          --  It is an error if a source file name in a source list or
4784          --  in a source list file is not found.
4785
4786          while NL /= No_Name_Location loop
4787             if not NL.Found then
4788                Err_Vars.Error_Msg_Name_1 := NL.Name;
4789
4790                if First_Error then
4791                   Error_Msg
4792                     (Project,
4793                      "source file { cannot be found",
4794                      NL.Location);
4795                   First_Error := False;
4796
4797                else
4798                   Error_Msg
4799                     (Project,
4800                      "\source file { cannot be found",
4801                      NL.Location);
4802                end if;
4803             end if;
4804
4805             NL := Source_Names.Get_Next;
4806          end loop;
4807
4808          --  Any naming exception of this language that is not in a list
4809          --  of sources must be removed.
4810
4811          declare
4812             Source_Id : Other_Source_Id := Data.First_Other_Source;
4813             Prev_Id   : Other_Source_Id := No_Other_Source;
4814             Source    : Other_Source;
4815
4816          begin
4817             while Source_Id /= No_Other_Source loop
4818                Source := Other_Sources.Table (Source_Id);
4819
4820                if Source.Language = Language
4821                  and then Source.Naming_Exception
4822                then
4823                   if Current_Verbosity = High then
4824                      Write_Str ("Naming exception """);
4825                      Write_Str (Get_Name_String (Source.File_Name));
4826                      Write_Str (""" is not in the list of sources,");
4827                      Write_Line (" so it is removed.");
4828                   end if;
4829
4830                   if Prev_Id = No_Other_Source then
4831                      Data.First_Other_Source := Source.Next;
4832
4833                   else
4834                      Other_Sources.Table (Prev_Id).Next := Source.Next;
4835                   end if;
4836
4837                   Source_Id := Source.Next;
4838
4839                   if Source_Id = No_Other_Source then
4840                      Data.Last_Other_Source := Prev_Id;
4841                   end if;
4842
4843                else
4844                   Prev_Id := Source_Id;
4845                   Source_Id := Source.Next;
4846                end if;
4847             end loop;
4848          end;
4849       end if;
4850    end Record_Other_Sources;
4851
4852    ----------------------
4853    -- Show_Source_Dirs --
4854    ----------------------
4855
4856    procedure Show_Source_Dirs (Project : Project_Id) is
4857       Current : String_List_Id := Projects.Table (Project).Source_Dirs;
4858       Element : String_Element;
4859
4860    begin
4861       Write_Line ("Source_Dirs:");
4862
4863       while Current /= Nil_String loop
4864          Element := String_Elements.Table (Current);
4865          Write_Str  ("   ");
4866          Write_Line (Get_Name_String (Element.Value));
4867          Current := Element.Next;
4868       end loop;
4869
4870       Write_Line ("end Source_Dirs.");
4871    end Show_Source_Dirs;
4872
4873    ----------------
4874    -- Suffix_For --
4875    ----------------
4876
4877    function Suffix_For
4878      (Language : Language_Index;
4879       Naming   : Naming_Data) return Name_Id
4880    is
4881       Suffix : constant Variable_Value :=
4882         Value_Of
4883           (Index     => Language_Names.Table (Language),
4884            Src_Index => 0,
4885            In_Array  => Naming.Body_Suffix);
4886    begin
4887       --  If no suffix for this language in package Naming, use the default
4888
4889       if Suffix = Nil_Variable_Value then
4890          Name_Len := 0;
4891
4892          case Language is
4893             when Ada_Language_Index =>
4894                Add_Str_To_Name_Buffer (".adb");
4895
4896             when C_Language_Index =>
4897                Add_Str_To_Name_Buffer (".c");
4898
4899             when C_Plus_Plus_Language_Index =>
4900                Add_Str_To_Name_Buffer (".cc");
4901
4902             when others =>
4903                return No_Name;
4904          end case;
4905
4906       --  Otherwise use the one specified
4907
4908       else
4909          Get_Name_String (Suffix.Value);
4910       end if;
4911
4912       Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
4913       return Name_Find;
4914    end Suffix_For;
4915
4916    -------------------------
4917    -- Warn_If_Not_Sources --
4918    -------------------------
4919
4920    --  comments needed in this body ???
4921
4922    procedure Warn_If_Not_Sources
4923      (Project     : Project_Id;
4924       Conventions : Array_Element_Id;
4925       Specs       : Boolean;
4926       Extending   : Boolean)
4927    is
4928       Conv          : Array_Element_Id := Conventions;
4929       Unit          : Name_Id;
4930       The_Unit_Id   : Unit_Id;
4931       The_Unit_Data : Unit_Data;
4932       Location      : Source_Ptr;
4933
4934    begin
4935       while Conv /= No_Array_Element loop
4936          Unit := Array_Elements.Table (Conv).Index;
4937          Error_Msg_Name_1 := Unit;
4938          Get_Name_String (Unit);
4939          To_Lower (Name_Buffer (1 .. Name_Len));
4940          Unit := Name_Find;
4941          The_Unit_Id := Units_Htable.Get (Unit);
4942          Location := Array_Elements.Table (Conv).Value.Location;
4943
4944          if The_Unit_Id = Prj.Com.No_Unit then
4945             Error_Msg
4946               (Project,
4947                "?unknown unit {",
4948                Location);
4949
4950          else
4951             The_Unit_Data := Units.Table (The_Unit_Id);
4952
4953             if Specs then
4954                if not Check_Project
4955                  (The_Unit_Data.File_Names (Specification).Project,
4956                   Project, Extending)
4957                then
4958                   Error_Msg
4959                     (Project,
4960                      "?unit{ has no spec in this project",
4961                      Location);
4962                end if;
4963
4964             else
4965                if not Check_Project
4966                  (The_Unit_Data.File_Names (Com.Body_Part).Project,
4967                   Project, Extending)
4968                then
4969                   Error_Msg
4970                     (Project,
4971                      "?unit{ has no body in this project",
4972                      Location);
4973                end if;
4974             end if;
4975          end if;
4976
4977          Conv := Array_Elements.Table (Conv).Next;
4978       end loop;
4979    end Warn_If_Not_Sources;
4980
4981 end Prj.Nmsc;