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) 2000-2008, Free Software Foundation, Inc.         --
  10 --                                                                          --
  11 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  12 -- terms of the  GNU General Public License as published  by the Free Soft- --
  13 -- ware  Foundation;  either version 3,  or (at your option) any later ver- --
  14 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  15 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  16 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  17 -- for  more details.  You should have  received  a copy of the GNU General --
  18 -- Public License  distributed with GNAT; see file COPYING3.  If not, go to --
  19 -- http://www.gnu.org/licenses for a complete copy of the license.          --
  20 --                                                                          --
  21 -- GNAT was originally developed  by the GNAT team at  New York University. --
  22 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  23 --                                                                          --
  24 ------------------------------------------------------------------------------
  25
  26 with GNAT.Case_Util;             use GNAT.Case_Util;
  27 with GNAT.Directory_Operations;  use GNAT.Directory_Operations;
  28 with GNAT.HTable;
  29
  30 with Err_Vars; use Err_Vars;
  31 with Fmap;     use Fmap;
  32 with Hostparm;
  33 with MLib.Tgt;
  34 with Opt;      use Opt;
  35 with Osint;    use Osint;
  36 with Output;   use Output;
  37 with Prj.Env;  use Prj.Env;
  38 with Prj.Err;
  39 with Prj.Util; use Prj.Util;
  40 with Sinput.P;
  41 with Snames;   use Snames;
  42 with Table;    use Table;
  43 with Targparm; use Targparm;
  44
  45 with Ada.Characters.Handling;    use Ada.Characters.Handling;
  46 with Ada.Directories;            use Ada.Directories;
  47 with Ada.Strings;                use Ada.Strings;
  48 with Ada.Strings.Fixed;          use Ada.Strings.Fixed;
  49 with Ada.Strings.Maps.Constants; use Ada.Strings.Maps.Constants;
  50
  51 package body Prj.Nmsc is
  52
  53    No_Continuation_String : aliased String := "";
  54    Continuation_String    : aliased String := "\";
  55    --  Used in Check_Library for continuation error messages at the same
  56    --  location.
  57
  58    Error_Report : Put_Line_Access := null;
  59    --  Set to point to error reporting procedure
  60
  61    When_No_Sources : Error_Warning := Error;
  62    --  Indicates what should be done when there is no Ada sources in a non
  63    --  extending Ada project.
  64
  65    ALI_Suffix   : constant String := ".ali";
  66    --  File suffix for ali files
  67
  68    type Name_Location is record
  69       Name     : File_Name_Type;
  70       Location : Source_Ptr;
  71       Source   : Source_Id := No_Source;
  72       Except   : Boolean := False;
  73       Found    : Boolean := False;
  74    end record;
  75    --  Information about file names found in string list attribute
  76    --  Source_Files or in a source list file, stored in hash table
  77    --  Source_Names, used by procedure Get_Path_Names_And_Record_Sources.
  78
  79    No_Name_Location : constant Name_Location :=
  80                         (Name     => No_File,
  81                          Location => No_Location,
  82                          Source   => No_Source,
  83                          Except   => False,
  84                          Found    => False);
  85
  86    package Source_Names is new GNAT.HTable.Simple_HTable
  87      (Header_Num => Header_Num,
  88       Element    => Name_Location,
  89       No_Element => No_Name_Location,
  90       Key        => File_Name_Type,
  91       Hash       => Hash,
  92       Equal      => "=");
  93    --  Hash table to store file names found in string list attribute
  94    --  Source_Files or in a source list file, stored in hash table
  95    --  Source_Names, used by procedure Get_Path_Names_And_Record_Sources.
  96
  97    --  More documentation needed on what unit exceptions are about ???
  98
  99    type Unit_Exception is record
 100       Name : Name_Id;
 101       Spec : File_Name_Type;
 102       Impl : File_Name_Type;
 103    end record;
 104
 105    No_Unit_Exception : constant Unit_Exception :=
 106                          (Name => No_Name,
 107                           Spec => No_File,
 108                           Impl => No_File);
 109
 110    package Unit_Exceptions is new GNAT.HTable.Simple_HTable
 111      (Header_Num => Header_Num,
 112       Element    => Unit_Exception,
 113       No_Element => No_Unit_Exception,
 114       Key        => Name_Id,
 115       Hash       => Hash,
 116       Equal      => "=");
 117    --  Hash table to store the unit exceptions
 118
 119    package Recursive_Dirs is new GNAT.HTable.Simple_HTable
 120      (Header_Num => Header_Num,
 121       Element    => Boolean,
 122       No_Element => False,
 123       Key        => Name_Id,
 124       Hash       => Hash,
 125       Equal      => "=");
 126    --  Hash table to store recursive source directories, to avoid looking
 127    --  several times, and to avoid cycles that may be introduced by symbolic
 128    --  links.
 129
 130    type Ada_Naming_Exception_Id is new Nat;
 131    No_Ada_Naming_Exception : constant Ada_Naming_Exception_Id := 0;
 132
 133    type Unit_Info is record
 134       Kind : Spec_Or_Body;
 135       Unit : Name_Id;
 136       Next : Ada_Naming_Exception_Id := No_Ada_Naming_Exception;
 137    end record;
 138    --  Comment needed???
 139
 140    --  Why is the following commented out ???
 141    --  No_Unit : constant Unit_Info :=
 142    --              (Specification, No_Name, No_Ada_Naming_Exception);
 143
 144    package Ada_Naming_Exception_Table is new Table.Table
 145      (Table_Component_Type => Unit_Info,
 146       Table_Index_Type     => Ada_Naming_Exception_Id,
 147       Table_Low_Bound      => 1,
 148       Table_Initial        => 20,
 149       Table_Increment      => 100,
 150       Table_Name           => "Prj.Nmsc.Ada_Naming_Exception_Table");
 151
 152    package Ada_Naming_Exceptions is new GNAT.HTable.Simple_HTable
 153      (Header_Num => Header_Num,
 154       Element    => Ada_Naming_Exception_Id,
 155       No_Element => No_Ada_Naming_Exception,
 156       Key        => File_Name_Type,
 157       Hash       => Hash,
 158       Equal      => "=");
 159    --  A hash table to store naming exceptions for Ada. For each file name
 160    --  there is one or several unit in table Ada_Naming_Exception_Table.
 161
 162    package Object_File_Names is new GNAT.HTable.Simple_HTable
 163      (Header_Num => Header_Num,
 164       Element    => File_Name_Type,
 165       No_Element => No_File,
 166       Key        => File_Name_Type,
 167       Hash       => Hash,
 168       Equal      => "=");
 169    --  A hash table to store the object file names for a project, to check that
 170    --  two different sources have different object file names.
 171
 172    type File_Found is record
 173       File     : File_Name_Type  := No_File;
 174       Found    : Boolean         := False;
 175       Location : Source_Ptr      := No_Location;
 176    end record;
 177    No_File_Found : constant File_Found := (No_File, False, No_Location);
 178    --  Comments needed ???
 179
 180    package Excluded_Sources_Htable is new GNAT.HTable.Simple_HTable
 181      (Header_Num => Header_Num,
 182       Element    => File_Found,
 183       No_Element => No_File_Found,
 184       Key        => File_Name_Type,
 185       Hash       => Hash,
 186       Equal      => "=");
 187    --  A hash table to store the excluded files, if any. This is filled by
 188    --  Find_Excluded_Sources below.
 189
 190    procedure Find_Excluded_Sources
 191      (Project : Project_Id;
 192       In_Tree : Project_Tree_Ref;
 193       Data    : Project_Data);
 194    --  Find the list of files that should not be considered as source files
 195    --  for this project. Sets the list in the Excluded_Sources_Htable.
 196
 197    function Hash (Unit : Unit_Info) return Header_Num;
 198
 199    type Name_And_Index is record
 200       Name  : Name_Id := No_Name;
 201       Index : Int     := 0;
 202    end record;
 203    No_Name_And_Index : constant Name_And_Index :=
 204                          (Name => No_Name, Index => 0);
 205
 206    package Reverse_Ada_Naming_Exceptions is new GNAT.HTable.Simple_HTable
 207      (Header_Num => Header_Num,
 208       Element    => Name_And_Index,
 209       No_Element => No_Name_And_Index,
 210       Key        => Unit_Info,
 211       Hash       => Hash,
 212       Equal      => "=");
 213    --  A table to check if a unit with an exceptional name will hide a source
 214    --  with a file name following the naming convention.
 215
 216    procedure Add_Source
 217      (Id                  : out Source_Id;
 218       Data                : in out Project_Data;
 219       In_Tree             : Project_Tree_Ref;
 220       Project             : Project_Id;
 221       Lang                : Name_Id;
 222       Lang_Id             : Language_Index;
 223       Kind                : Source_Kind;
 224       File_Name           : File_Name_Type;
 225       Display_File        : File_Name_Type;
 226       Lang_Kind           : Language_Kind;
 227       Naming_Exception    : Boolean := False;
 228       Path                : Path_Name_Type := No_Path;
 229       Display_Path        : Path_Name_Type := No_Path;
 230       Alternate_Languages : Alternate_Language_Id := No_Alternate_Language;
 231       Other_Part          : Source_Id := No_Source;
 232       Unit                : Name_Id   := No_Name;
 233       Index               : Int       := 0;
 234       Source_To_Replace   : Source_Id := No_Source);
 235    --  Add a new source to the different lists: list of all sources in the
 236    --  project tree, list of source of a project and list of sources of a
 237    --  language.
 238    --
 239    --  If Path is specified, the file is also added to Source_Paths_HT.
 240    --  If Source_To_Replace is specified, it points to the source in the
 241    --  extended project that the new file is overriding.
 242
 243    function ALI_File_Name (Source : String) return String;
 244    --  Return the ALI file name corresponding to a source
 245
 246    procedure Check_Ada_Name (Name : String; Unit : out Name_Id);
 247    --  Check that a name is a valid Ada unit name
 248
 249    procedure Check_Naming_Schemes
 250      (Data    : in out Project_Data;
 251       Project : Project_Id;
 252       In_Tree : Project_Tree_Ref);
 253    --  Check the naming scheme part of Data
 254
 255    procedure Check_Ada_Naming_Scheme_Validity
 256      (Project : Project_Id;
 257       In_Tree : Project_Tree_Ref;
 258       Naming  : Naming_Data);
 259    --  Check that the package Naming is correct
 260
 261    procedure Check_Configuration
 262      (Project : Project_Id;
 263       In_Tree : Project_Tree_Ref;
 264       Data    : in out Project_Data);
 265    --  Check the configuration attributes for the project
 266
 267    procedure Check_If_Externally_Built
 268      (Project : Project_Id;
 269       In_Tree : Project_Tree_Ref;
 270       Data    : in out Project_Data);
 271    --  Check attribute Externally_Built of project Project in project tree
 272    --  In_Tree and modify its data Data if it has the value "true".
 273
 274    procedure Check_Interfaces
 275      (Project : Project_Id;
 276       In_Tree : Project_Tree_Ref;
 277       Data    : in out Project_Data);
 278    --  If a list of sources is specified in attribute Interfaces, set
 279    --  In_Interfaces only for the sources specified in the list.
 280
 281    procedure Check_Library_Attributes
 282      (Project     : Project_Id;
 283       In_Tree     : Project_Tree_Ref;
 284       Current_Dir : String;
 285       Data        : in out Project_Data);
 286    --  Check the library attributes of project Project in project tree In_Tree
 287    --  and modify its data Data accordingly.
 288    --  Current_Dir should represent the current directory, and is passed for
 289    --  efficiency to avoid system calls to recompute it.
 290
 291    procedure Check_Package_Naming
 292      (Project : Project_Id;
 293       In_Tree : Project_Tree_Ref;
 294       Data    : in out Project_Data);
 295    --  Check package Naming of project Project in project tree In_Tree and
 296    --  modify its data Data accordingly.
 297
 298    procedure Check_Programming_Languages
 299      (In_Tree : Project_Tree_Ref;
 300       Project : Project_Id;
 301       Data    : in out Project_Data);
 302    --  Check attribute Languages for the project with data Data in project
 303    --  tree In_Tree and set the components of Data for all the programming
 304    --  languages indicated in attribute Languages, if any.
 305
 306    function Check_Project
 307      (P            : Project_Id;
 308       Root_Project : Project_Id;
 309       In_Tree      : Project_Tree_Ref;
 310       Extending    : Boolean) return Boolean;
 311    --  Returns True if P is Root_Project or, if Extending is True, a project
 312    --  extended by Root_Project.
 313
 314    procedure Check_Stand_Alone_Library
 315      (Project     : Project_Id;
 316       In_Tree     : Project_Tree_Ref;
 317       Data        : in out Project_Data;
 318       Current_Dir : String;
 319       Extending   : Boolean);
 320    --  Check if project Project in project tree In_Tree is a Stand-Alone
 321    --  Library project, and modify its data Data accordingly if it is one.
 322    --  Current_Dir should represent the current directory, and is passed for
 323    --  efficiency to avoid system calls to recompute it.
 324
 325    procedure Get_Path_Names_And_Record_Ada_Sources
 326      (Project     : Project_Id;
 327       In_Tree     : Project_Tree_Ref;
 328       Data        : in out Project_Data;
 329       Current_Dir : String);
 330    --  Find the path names of the source files in the Source_Names table
 331    --  in the source directories and record those that are Ada sources.
 332
 333    function Compute_Directory_Last (Dir : String) return Natural;
 334    --  Return the index of the last significant character in Dir. This is used
 335    --  to avoid duplicate '/' (slash) characters at the end of directory names.
 336
 337    procedure Error_Msg
 338      (Project       : Project_Id;
 339       In_Tree       : Project_Tree_Ref;
 340       Msg           : String;
 341       Flag_Location : Source_Ptr);
 342    --  Output an error message. If Error_Report is null, simply call
 343    --  Prj.Err.Error_Msg. Otherwise, disregard Flag_Location and use
 344    --  Error_Report.
 345
 346    procedure Find_Ada_Sources
 347      (Project      : Project_Id;
 348       In_Tree      : Project_Tree_Ref;
 349       Data         : in out Project_Data;
 350       Current_Dir  : String);
 351    --  Find all the Ada sources in all of the source directories of a project
 352    --  Current_Dir should represent the current directory, and is passed for
 353    --  efficiency to avoid system calls to recompute it.
 354
 355    procedure Search_Directories
 356      (Project         : Project_Id;
 357       In_Tree         : Project_Tree_Ref;
 358       Data            : in out Project_Data;
 359       For_All_Sources : Boolean);
 360    --  Search the source directories to find the sources.
 361    --  If For_All_Sources is True, check each regular file name against the
 362    --  naming schemes of the different languages. Otherwise consider only the
 363    --  file names in the hash table Source_Names.
 364
 365    procedure Check_File
 366      (Project           : Project_Id;
 367       In_Tree           : Project_Tree_Ref;
 368       Data              : in out Project_Data;
 369       Name              : String;
 370       File_Name         : File_Name_Type;
 371       Display_File_Name : File_Name_Type;
 372       Source_Directory  : String;
 373       For_All_Sources   : Boolean);
 374    --  Check if file File_Name is a valid source of the project. This is used
 375    --  in multi-language mode only.
 376    --  When the file matches one of the naming schemes, it is added to
 377    --  various htables through Add_Source and to Source_Paths_Htable.
 378    --
 379    --  Name is the name of the candidate file. It hasn't been normalized yet
 380    --  and is the direct result of readdir().
 381    --
 382    --  File_Name is the same as Name, but has been normalized.
 383    --  Display_File_Name, however, has not been normalized.
 384    --
 385    --  Source_Directory is the directory in which the file
 386    --  was found. It hasn't been normalized (nor has had links resolved).
 387    --  It should not end with a directory separator, to avoid duplicates
 388    --  later on.
 389    --
 390    --  If For_All_Sources is True, then all possible file names are analyzed
 391    --  otherwise only those currently set in the Source_Names htable.
 392
 393    procedure Check_Naming_Schemes
 394      (In_Tree               : Project_Tree_Ref;
 395       Data                  : in out Project_Data;
 396       Filename              : String;
 397       File_Name             : File_Name_Type;
 398       Alternate_Languages   : out Alternate_Language_Id;
 399       Language              : out Language_Index;
 400       Language_Name         : out Name_Id;
 401       Display_Language_Name : out Name_Id;
 402       Unit                  : out Name_Id;
 403       Lang_Kind             : out Language_Kind;
 404       Kind                  : out Source_Kind);
 405    --  Check if the file name File_Name conforms to one of the naming
 406    --  schemes of the project.
 407    --
 408    --  If the file does not match one of the naming schemes, set Language
 409    --  to No_Language_Index.
 410    --
 411    --  Filename is the name of the file being investigated. It has been
 412    --  normalized (case-folded). File_Name is the same value.
 413
 414    procedure Free_Ada_Naming_Exceptions;
 415    --  Free the internal hash tables used for checking naming exceptions
 416
 417    procedure Get_Directories
 418      (Project : Project_Id;
 419       In_Tree : Project_Tree_Ref;
 420       Current_Dir : String;
 421       Data    : in out Project_Data);
 422    --  Get the object directory, the exec directory and the source directories
 423    --  of a project.
 424    --
 425    --  Current_Dir should represent the current directory, and is passed for
 426    --  efficiency to avoid system calls to recompute it.
 427
 428    procedure Get_Mains
 429      (Project : Project_Id;
 430       In_Tree : Project_Tree_Ref;
 431       Data    : in out Project_Data);
 432    --  Get the mains of a project from attribute Main, if it exists, and put
 433    --  them in the project data.
 434
 435    procedure Get_Sources_From_File
 436      (Path     : String;
 437       Location : Source_Ptr;
 438       Project  : Project_Id;
 439       In_Tree  : Project_Tree_Ref);
 440    --  Get the list of sources from a text file and put them in hash table
 441    --  Source_Names.
 442
 443    procedure Find_Explicit_Sources
 444      (Current_Dir : String;
 445       Project     : Project_Id;
 446       In_Tree     : Project_Tree_Ref;
 447       Data        : in out Project_Data);
 448    --  Process the Source_Files and Source_List_File attributes, and store
 449    --  the list of source files into the Source_Names htable.
 450    --
 451    --  Lang indicates which language is being processed when in Ada_Only mode
 452    --  (all languages are processed anyway when in Multi_Language mode).
 453
 454    procedure Get_Unit
 455      (In_Tree             : Project_Tree_Ref;
 456       Canonical_File_Name : File_Name_Type;
 457       Naming              : Naming_Data;
 458       Exception_Id        : out Ada_Naming_Exception_Id;
 459       Unit_Name           : out Name_Id;
 460       Unit_Kind           : out Spec_Or_Body;
 461       Needs_Pragma        : out Boolean);
 462    --  Find out, from a file name, the unit name, the unit kind and if a
 463    --  specific SFN pragma is needed. If the file name corresponds to no unit,
 464    --  then Unit_Name will be No_Name. If the file is a multi-unit source or an
 465    --  exception to the naming scheme, then Exception_Id is set to the unit or
 466    --  units that the source contains.
 467
 468    function Is_Illegal_Suffix
 469      (Suffix                          : String;
 470       Dot_Replacement_Is_A_Single_Dot : Boolean) return Boolean;
 471    --  Returns True if the string Suffix cannot be used as a spec suffix, a
 472    --  body suffix or a separate suffix.
 473
 474    procedure Locate_Directory
 475      (Project  : Project_Id;
 476       In_Tree  : Project_Tree_Ref;
 477       Name     : File_Name_Type;
 478       Parent   : Path_Name_Type;
 479       Dir      : out Path_Name_Type;
 480       Display  : out Path_Name_Type;
 481       Create   : String := "";
 482       Current_Dir : String;
 483       Location : Source_Ptr := No_Location);
 484    --  Locate a directory. Name is the directory name. Parent is the root
 485    --  directory, if Name a relative path name. Dir is set to the canonical
 486    --  case path name of the directory, and Display is the directory path name
 487    --  for display purposes. If the directory does not exist and Project_Setup
 488    --  is True and Create is a non null string, an attempt is made to create
 489    --  the directory. If the directory does not exist and Project_Setup is
 490    --  false, then Dir and Display are set to No_Name.
 491    --
 492    --  Current_Dir should represent the current directory, and is passed for
 493    --  efficiency to avoid system calls to recompute it.
 494
 495    procedure Look_For_Sources
 496      (Project     : Project_Id;
 497       In_Tree     : Project_Tree_Ref;
 498       Data        : in out Project_Data;
 499       Current_Dir : String);
 500    --  Find all the sources of project Project in project tree In_Tree and
 501    --  update its Data accordingly.
 502    --
 503    --  Current_Dir should represent the current directory, and is passed for
 504    --  efficiency to avoid system calls to recompute it.
 505
 506    function Path_Name_Of
 507      (File_Name : File_Name_Type;
 508       Directory : Path_Name_Type) return String;
 509    --  Returns the path name of a (non project) file. Returns an empty string
 510    --  if file cannot be found.
 511
 512    procedure Prepare_Ada_Naming_Exceptions
 513      (List    : Array_Element_Id;
 514       In_Tree : Project_Tree_Ref;
 515       Kind    : Spec_Or_Body);
 516    --  Prepare the internal hash tables used for checking naming exceptions
 517    --  for Ada. Insert all elements of List in the tables.
 518
 519    function Project_Extends
 520      (Extending : Project_Id;
 521       Extended  : Project_Id;
 522       In_Tree   : Project_Tree_Ref) return Boolean;
 523    --  Returns True if Extending is extending Extended either directly or
 524    --  indirectly.
 525
 526    procedure Record_Ada_Source
 527      (File_Name       : File_Name_Type;
 528       Path_Name       : Path_Name_Type;
 529       Project         : Project_Id;
 530       In_Tree         : Project_Tree_Ref;
 531       Data            : in out Project_Data;
 532       Location        : Source_Ptr;
 533       Current_Source  : in out String_List_Id;
 534       Source_Recorded : in out Boolean;
 535       Current_Dir     : String);
 536    --  Put a unit in the list of units of a project, if the file name
 537    --  corresponds to a valid unit name.
 538    --
 539    --  Current_Dir should represent the current directory, and is passed for
 540    --  efficiency to avoid system calls to recompute it.
 541
 542    procedure Remove_Source
 543      (Id          : Source_Id;
 544       Replaced_By : Source_Id;
 545       Project     : Project_Id;
 546       Data        : in out Project_Data;
 547       In_Tree     : Project_Tree_Ref);
 548    --  ??? needs comment
 549
 550    procedure Report_No_Sources
 551      (Project      : Project_Id;
 552       Lang_Name    : String;
 553       In_Tree      : Project_Tree_Ref;
 554       Location     : Source_Ptr;
 555       Continuation : Boolean := False);
 556    --  Report an error or a warning depending on the value of When_No_Sources
 557    --  when there are no sources for language Lang_Name.
 558
 559    procedure Show_Source_Dirs
 560      (Data : Project_Data; In_Tree : Project_Tree_Ref);
 561    --  List all the source directories of a project
 562
 563    procedure Warn_If_Not_Sources
 564      (Project     : Project_Id;
 565       In_Tree     : Project_Tree_Ref;
 566       Conventions : Array_Element_Id;
 567       Specs       : Boolean;
 568       Extending   : Boolean);
 569    --  Check that individual naming conventions apply to immediate sources of
 570    --  the project. If not, issue a warning.
 571
 572    ----------------
 573    -- Add_Source --
 574    ----------------
 575
 576    procedure Add_Source
 577      (Id                  : out Source_Id;
 578       Data                : in out Project_Data;
 579       In_Tree             : Project_Tree_Ref;
 580       Project             : Project_Id;
 581       Lang                : Name_Id;
 582       Lang_Id             : Language_Index;
 583       Kind                : Source_Kind;
 584       File_Name           : File_Name_Type;
 585       Display_File        : File_Name_Type;
 586       Lang_Kind           : Language_Kind;
 587       Naming_Exception    : Boolean := False;
 588       Path                : Path_Name_Type := No_Path;
 589       Display_Path        : Path_Name_Type := No_Path;
 590       Alternate_Languages : Alternate_Language_Id := No_Alternate_Language;
 591       Other_Part          : Source_Id := No_Source;
 592       Unit                : Name_Id   := No_Name;
 593       Index               : Int       := 0;
 594       Source_To_Replace   : Source_Id := No_Source)
 595    is
 596       Source   : constant Source_Id := Data.Last_Source;
 597       Src_Data : Source_Data := No_Source_Data;
 598       Config   : constant Language_Config :=
 599                    In_Tree.Languages_Data.Table (Lang_Id).Config;
 600
 601    begin
 602       --  This is a new source so create an entry for it in the Sources table
 603
 604       Source_Data_Table.Increment_Last (In_Tree.Sources);
 605       Id := Source_Data_Table.Last (In_Tree.Sources);
 606
 607       if Current_Verbosity = High then
 608          Write_Str ("Adding source #");
 609          Write_Str (Id'Img);
 610          Write_Str (", File : ");
 611          Write_Str (Get_Name_String (File_Name));
 612
 613          if Lang_Kind = Unit_Based then
 614             Write_Str (", Unit : ");
 615             Write_Str (Get_Name_String (Unit));
 616          end if;
 617
 618          Write_Eol;
 619       end if;
 620
 621       Src_Data.Project             := Project;
 622       Src_Data.Language_Name       := Lang;
 623       Src_Data.Language            := Lang_Id;
 624       Src_Data.Lang_Kind           := Lang_Kind;
 625       Src_Data.Compiled            := In_Tree.Languages_Data.Table
 626                                         (Lang_Id).Config.Compiler_Driver /=
 627                                                               Empty_File_Name;
 628       Src_Data.Kind                := Kind;
 629       Src_Data.Alternate_Languages := Alternate_Languages;
 630       Src_Data.Other_Part          := Other_Part;
 631
 632       Src_Data.Object_Exists := Config.Object_Generated;
 633       Src_Data.Object_Linked := Config.Objects_Linked;
 634
 635       if Other_Part /= No_Source then
 636          In_Tree.Sources.Table (Other_Part).Other_Part := Id;
 637       end if;
 638
 639       Src_Data.Unit                := Unit;
 640       Src_Data.Index               := Index;
 641       Src_Data.File                := File_Name;
 642       Src_Data.Display_File        := Display_File;
 643       Src_Data.Dependency          := In_Tree.Languages_Data.Table
 644                                         (Lang_Id).Config.Dependency_Kind;
 645       Src_Data.Naming_Exception    := Naming_Exception;
 646
 647       if Src_Data.Compiled and then Src_Data.Object_Exists then
 648          Src_Data.Object   := Object_Name (File_Name);
 649          Src_Data.Dep_Name :=
 650            Dependency_Name (File_Name, Src_Data.Dependency);
 651          Src_Data.Switches := Switches_Name (File_Name);
 652       end if;
 653
 654       if Path /= No_Path then
 655          Src_Data.Path := (Path, Display_Path);
 656          Source_Paths_Htable.Set (In_Tree.Source_Paths_HT, Path, Id);
 657       end if;
 658
 659       --  Add the source to the global list
 660
 661       Src_Data.Next_In_Sources := In_Tree.First_Source;
 662       In_Tree.First_Source := Id;
 663
 664       --  Add the source to the project list
 665
 666       if Source = No_Source then
 667          Data.First_Source := Id;
 668       else
 669          In_Tree.Sources.Table (Source).Next_In_Project := Id;
 670       end if;
 671
 672       Data.Last_Source := Id;
 673
 674       --  Add the source to the language list
 675
 676       Src_Data.Next_In_Lang :=
 677         In_Tree.Languages_Data.Table (Lang_Id).First_Source;
 678       In_Tree.Languages_Data.Table (Lang_Id).First_Source := Id;
 679
 680       In_Tree.Sources.Table (Id) := Src_Data;
 681
 682       if Source_To_Replace /= No_Source then
 683          Remove_Source (Source_To_Replace, Id, Project, Data, In_Tree);
 684       end if;
 685    end Add_Source;
 686
 687    -------------------
 688    -- ALI_File_Name --
 689    -------------------
 690
 691    function ALI_File_Name (Source : String) return String is
 692    begin
 693       --  If the source name has an extension, then replace it with
 694       --  the ALI suffix.
 695
 696       for Index in reverse Source'First + 1 .. Source'Last loop
 697          if Source (Index) = '.' then
 698             return Source (Source'First .. Index - 1) & ALI_Suffix;
 699          end if;
 700       end loop;
 701
 702       --  If there is no dot, or if it is the first character, just add the
 703       --  ALI suffix.
 704
 705       return Source & ALI_Suffix;
 706    end ALI_File_Name;
 707
 708    -----------
 709    -- Check --
 710    -----------
 711
 712    procedure Check
 713      (Project         : Project_Id;
 714       In_Tree         : Project_Tree_Ref;
 715       Report_Error    : Put_Line_Access;
 716       When_No_Sources : Error_Warning;
 717       Current_Dir     : String)
 718    is
 719       Data      : Project_Data := In_Tree.Projects.Table (Project);
 720       Extending : Boolean := False;
 721
 722    begin
 723       Nmsc.When_No_Sources := When_No_Sources;
 724       Error_Report := Report_Error;
 725
 726       Recursive_Dirs.Reset;
 727
 728       Check_If_Externally_Built (Project, In_Tree, Data);
 729
 730       --  Object, exec and source directories
 731
 732       Get_Directories (Project, In_Tree, Current_Dir, Data);
 733
 734       --  Get the programming languages
 735
 736       Check_Programming_Languages (In_Tree, Project, Data);
 737
 738       if Data.Qualifier = Dry and then Data.Source_Dirs /= Nil_String then
 739          Error_Msg
 740            (Project, In_Tree,
 741             "an abstract project need to have no language, no sources or no " &
 742             "source directories",
 743             Data.Location);
 744       end if;
 745
 746       --  Check configuration in multi language mode
 747
 748       if Must_Check_Configuration then
 749          Check_Configuration (Project, In_Tree, Data);
 750       end if;
 751
 752       --  Library attributes
 753
 754       Check_Library_Attributes (Project, In_Tree, Current_Dir, Data);
 755
 756       if Current_Verbosity = High then
 757          Show_Source_Dirs (Data, In_Tree);
 758       end if;
 759
 760       Check_Package_Naming (Project, In_Tree, Data);
 761
 762       Extending := Data.Extends /= No_Project;
 763
 764       Check_Naming_Schemes (Data, Project, In_Tree);
 765
 766       if Get_Mode = Ada_Only then
 767          Prepare_Ada_Naming_Exceptions
 768            (Data.Naming.Bodies, In_Tree, Body_Part);
 769          Prepare_Ada_Naming_Exceptions
 770            (Data.Naming.Specs, In_Tree, Specification);
 771       end if;
 772
 773       --  Find the sources
 774
 775       if Data.Source_Dirs /= Nil_String then
 776          Look_For_Sources (Project, In_Tree, Data, Current_Dir);
 777
 778          if Get_Mode = Ada_Only then
 779
 780             --  Check that all individual naming conventions apply to sources
 781             --  of this project file.
 782
 783             Warn_If_Not_Sources
 784               (Project, In_Tree, Data.Naming.Bodies,
 785                Specs     => False,
 786                Extending => Extending);
 787             Warn_If_Not_Sources
 788               (Project, In_Tree, Data.Naming.Specs,
 789                Specs     => True,
 790                Extending => Extending);
 791
 792          elsif Get_Mode = Multi_Language and then
 793                (not Data.Externally_Built) and then
 794                (not Extending)
 795          then
 796             declare
 797                Language      : Language_Index;
 798                Source        : Source_Id;
 799                Src_Data      : Source_Data;
 800                Alt_Lang      : Alternate_Language_Id;
 801                Alt_Lang_Data : Alternate_Language_Data;
 802                Continuation  : Boolean := False;
 803
 804             begin
 805                Language := Data.First_Language_Processing;
 806                while Language /= No_Language_Index loop
 807                   Source := Data.First_Source;
 808                   Source_Loop : while Source /= No_Source loop
 809                      Src_Data := In_Tree.Sources.Table (Source);
 810
 811                      exit Source_Loop when Src_Data.Language = Language;
 812
 813                      Alt_Lang := Src_Data.Alternate_Languages;
 814
 815                      Alternate_Loop :
 816                      while Alt_Lang /= No_Alternate_Language loop
 817                         Alt_Lang_Data :=
 818                           In_Tree.Alt_Langs.Table (Alt_Lang);
 819                         exit Source_Loop
 820                                when Alt_Lang_Data.Language = Language;
 821                         Alt_Lang := Alt_Lang_Data.Next;
 822                      end loop Alternate_Loop;
 823
 824                      Source := Src_Data.Next_In_Project;
 825                   end loop Source_Loop;
 826
 827                   if Source = No_Source then
 828                      Report_No_Sources
 829                        (Project,
 830                         Get_Name_String
 831                           (In_Tree.Languages_Data.Table
 832                              (Language).Display_Name),
 833                         In_Tree,
 834                         Data.Location,
 835                         Continuation);
 836                      Continuation := True;
 837                   end if;
 838
 839                   Language := In_Tree.Languages_Data.Table (Language).Next;
 840                end loop;
 841             end;
 842          end if;
 843       end if;
 844
 845       if Get_Mode = Multi_Language then
 846
 847          --  If a list of sources is specified in attribute Interfaces, set
 848          --  In_Interfaces only for the sources specified in the list.
 849
 850          Check_Interfaces (Project, In_Tree, Data);
 851       end if;
 852
 853       --  If it is a library project file, check if it is a standalone library
 854
 855       if Data.Library then
 856          Check_Stand_Alone_Library
 857            (Project, In_Tree, Data, Current_Dir, Extending);
 858       end if;
 859
 860       --  Put the list of Mains, if any, in the project data
 861
 862       Get_Mains (Project, In_Tree, Data);
 863
 864       --  Update the project data in the Projects table
 865
 866       In_Tree.Projects.Table (Project) := Data;
 867
 868       Free_Ada_Naming_Exceptions;
 869    end Check;
 870
 871    --------------------
 872    -- Check_Ada_Name --
 873    --------------------
 874
 875    procedure Check_Ada_Name (Name : String; Unit : out Name_Id) is
 876       The_Name        : String := Name;
 877       Real_Name       : Name_Id;
 878       Need_Letter     : Boolean := True;
 879       Last_Underscore : Boolean := False;
 880       OK              : Boolean := The_Name'Length > 0;
 881       First           : Positive;
 882
 883       function Is_Reserved (Name : Name_Id) return Boolean;
 884       function Is_Reserved (S    : String)  return Boolean;
 885       --  Check that the given name is not an Ada 95 reserved word. The reason
 886       --  for the Ada 95 here is that we do not want to exclude the case of an
 887       --  Ada 95 unit called Interface (for example). In Ada 2005, such a unit
 888       --  name would be rejected anyway by the compiler. That means there is no
 889       --  requirement that the project file parser reject this.
 890
 891       -----------------
 892       -- Is_Reserved --
 893       -----------------
 894
 895       function Is_Reserved (S : String) return Boolean is
 896       begin
 897          Name_Len := 0;
 898          Add_Str_To_Name_Buffer (S);
 899          return Is_Reserved (Name_Find);
 900       end Is_Reserved;
 901
 902       -----------------
 903       -- Is_Reserved --
 904       -----------------
 905
 906       function Is_Reserved (Name : Name_Id) return Boolean is
 907       begin
 908          if Get_Name_Table_Byte (Name) /= 0
 909            and then Name /= Name_Project
 910            and then Name /= Name_Extends
 911            and then Name /= Name_External
 912            and then Name not in Ada_2005_Reserved_Words
 913          then
 914             Unit := No_Name;
 915
 916             if Current_Verbosity = High then
 917                Write_Str (The_Name);
 918                Write_Line (" is an Ada reserved word.");
 919             end if;
 920
 921             return True;
 922
 923          else
 924             return False;
 925          end if;
 926       end Is_Reserved;
 927
 928    --  Start of processing for Check_Ada_Name
 929
 930    begin
 931       To_Lower (The_Name);
 932
 933       Name_Len := The_Name'Length;
 934       Name_Buffer (1 .. Name_Len) := The_Name;
 935
 936       --  Special cases of children of packages A, G, I and S on VMS
 937
 938       if OpenVMS_On_Target
 939         and then Name_Len > 3
 940         and then Name_Buffer (2 .. 3) = "__"
 941         and then
 942           ((Name_Buffer (1) = 'a') or else
 943            (Name_Buffer (1) = 'g') or else
 944            (Name_Buffer (1) = 'i') or else
 945            (Name_Buffer (1) = 's'))
 946       then
 947          Name_Buffer (2) := '.';
 948          Name_Buffer (3 .. Name_Len - 1) := Name_Buffer (4 .. Name_Len);
 949          Name_Len := Name_Len - 1;
 950       end if;
 951
 952       Real_Name := Name_Find;
 953
 954       if Is_Reserved (Real_Name) then
 955          return;
 956       end if;
 957
 958       First := The_Name'First;
 959
 960       for Index in The_Name'Range loop
 961          if Need_Letter then
 962
 963             --  We need a letter (at the beginning, and following a dot),
 964             --  but we don't have one.
 965
 966             if Is_Letter (The_Name (Index)) then
 967                Need_Letter := False;
 968
 969             else
 970                OK := False;
 971
 972                if Current_Verbosity = High then
 973                   Write_Int  (Types.Int (Index));
 974                   Write_Str  (": '");
 975                   Write_Char (The_Name (Index));
 976                   Write_Line ("' is not a letter.");
 977                end if;
 978
 979                exit;
 980             end if;
 981
 982          elsif Last_Underscore
 983            and then (The_Name (Index) = '_' or else The_Name (Index) = '.')
 984          then
 985             --  Two underscores are illegal, and a dot cannot follow
 986             --  an underscore.
 987
 988             OK := False;
 989
 990             if Current_Verbosity = High then
 991                Write_Int  (Types.Int (Index));
 992                Write_Str  (": '");
 993                Write_Char (The_Name (Index));
 994                Write_Line ("' is illegal here.");
 995             end if;
 996
 997             exit;
 998
 999          elsif The_Name (Index) = '.' then
1000
1001             --  First, check if the name before the dot is not a reserved word
1002             if Is_Reserved (The_Name (First .. Index - 1)) then
1003                return;
1004             end if;
1005
1006             First := Index + 1;
1007
1008             --  We need a letter after a dot
1009
1010             Need_Letter := True;
1011
1012          elsif The_Name (Index) = '_' then
1013             Last_Underscore := True;
1014
1015          else
1016             --  We need an letter or a digit
1017
1018             Last_Underscore := False;
1019
1020             if not Is_Alphanumeric (The_Name (Index)) then
1021                OK := False;
1022
1023                if Current_Verbosity = High then
1024                   Write_Int  (Types.Int (Index));
1025                   Write_Str  (": '");
1026                   Write_Char (The_Name (Index));
1027                   Write_Line ("' is not alphanumeric.");
1028                end if;
1029
1030                exit;
1031             end if;
1032          end if;
1033       end loop;
1034
1035       --  Cannot end with an underscore or a dot
1036
1037       OK := OK and then not Need_Letter and then not Last_Underscore;
1038
1039       if OK then
1040          if First /= Name'First and then
1041            Is_Reserved (The_Name (First .. The_Name'Last))
1042          then
1043             return;
1044          end if;
1045
1046          Unit := Real_Name;
1047
1048       else
1049          --  Signal a problem with No_Name
1050
1051          Unit := No_Name;
1052       end if;
1053    end Check_Ada_Name;
1054
1055    --------------------------------------
1056    -- Check_Ada_Naming_Scheme_Validity --
1057    --------------------------------------
1058
1059    procedure Check_Ada_Naming_Scheme_Validity
1060      (Project : Project_Id;
1061       In_Tree : Project_Tree_Ref;
1062       Naming  : Naming_Data)
1063    is
1064    begin
1065       --  Only check if we are not using the Default naming scheme
1066
1067       if Naming /= In_Tree.Private_Part.Default_Naming then
1068          declare
1069             Dot_Replacement : constant String :=
1070                                 Get_Name_String
1071                                   (Naming.Dot_Replacement);
1072
1073             Spec_Suffix : constant String :=
1074                                   Spec_Suffix_Of (In_Tree, "ada", Naming);
1075
1076             Body_Suffix : constant String :=
1077                                   Body_Suffix_Of (In_Tree, "ada", Naming);
1078
1079             Separate_Suffix : constant String :=
1080                                 Get_Name_String
1081                                   (Naming.Separate_Suffix);
1082
1083          begin
1084             --  Dot_Replacement cannot
1085
1086             --   - be empty
1087             --   - start or end with an alphanumeric
1088             --   - be a single '_'
1089             --   - start with an '_' followed by an alphanumeric
1090             --   - contain a '.' except if it is "."
1091
1092             if Dot_Replacement'Length = 0
1093               or else Is_Alphanumeric
1094                         (Dot_Replacement (Dot_Replacement'First))
1095               or else Is_Alphanumeric
1096                         (Dot_Replacement (Dot_Replacement'Last))
1097               or else (Dot_Replacement (Dot_Replacement'First) = '_'
1098                         and then
1099                         (Dot_Replacement'Length = 1
1100                           or else
1101                            Is_Alphanumeric
1102                              (Dot_Replacement (Dot_Replacement'First + 1))))
1103               or else (Dot_Replacement'Length > 1
1104                          and then
1105                            Index (Source => Dot_Replacement,
1106                                   Pattern => ".") /= 0)
1107             then
1108                Error_Msg
1109                  (Project, In_Tree,
1110                   '"' & Dot_Replacement &
1111                   """ is illegal for Dot_Replacement.",
1112                   Naming.Dot_Repl_Loc);
1113             end if;
1114
1115             --  Suffixes cannot
1116             --   - be empty
1117
1118             if Is_Illegal_Suffix
1119                  (Spec_Suffix, Dot_Replacement = ".")
1120             then
1121                Err_Vars.Error_Msg_File_1 :=
1122                  Spec_Suffix_Id_Of (In_Tree, Name_Ada, Naming);
1123                Error_Msg
1124                  (Project, In_Tree,
1125                   "{ is illegal for Spec_Suffix",
1126                   Naming.Ada_Spec_Suffix_Loc);
1127             end if;
1128
1129             if Is_Illegal_Suffix
1130                  (Body_Suffix, Dot_Replacement = ".")
1131             then
1132                Err_Vars.Error_Msg_File_1 :=
1133                  Body_Suffix_Id_Of (In_Tree, Name_Ada, Naming);
1134                Error_Msg
1135                  (Project, In_Tree,
1136                   "{ is illegal for Body_Suffix",
1137                   Naming.Ada_Body_Suffix_Loc);
1138             end if;
1139
1140             if Body_Suffix /= Separate_Suffix then
1141                if Is_Illegal_Suffix
1142                     (Separate_Suffix, Dot_Replacement = ".")
1143                then
1144                   Err_Vars.Error_Msg_File_1 := Naming.Separate_Suffix;
1145                   Error_Msg
1146                     (Project, In_Tree,
1147                      "{ is illegal for Separate_Suffix",
1148                      Naming.Sep_Suffix_Loc);
1149                end if;
1150             end if;
1151
1152             --  Spec_Suffix cannot be equal to Body_Suffix Separate_Suffix,
1153             --  since that would cause a clear ambiguity. Note that we do
1154             --  allow a Spec_Suffix to have the same termination as one of
1155             --  these, which causes a potential ambiguity, but we resolve
1156             --  that my matching the longest possible suffix.
1157
1158             if Spec_Suffix = Body_Suffix then
1159                Error_Msg
1160                  (Project, In_Tree,
1161                   "Body_Suffix (""" &
1162                   Body_Suffix &
1163                   """) cannot be the same as Spec_Suffix.",
1164                   Naming.Ada_Body_Suffix_Loc);
1165             end if;
1166
1167             if Body_Suffix /= Separate_Suffix
1168               and then Spec_Suffix = Separate_Suffix
1169             then
1170                Error_Msg
1171                  (Project, In_Tree,
1172                   "Separate_Suffix (""" &
1173                   Separate_Suffix &
1174                   """) cannot be the same as Spec_Suffix.",
1175                   Naming.Sep_Suffix_Loc);
1176             end if;
1177          end;
1178       end if;
1179    end Check_Ada_Naming_Scheme_Validity;
1180
1181    -------------------------
1182    -- Check_Configuration --
1183    -------------------------
1184
1185    procedure Check_Configuration
1186      (Project : Project_Id;
1187       In_Tree : Project_Tree_Ref;
1188       Data    : in out Project_Data)
1189    is
1190       Dot_Replacement : File_Name_Type := No_File;
1191       Casing          : Casing_Type    := All_Lower_Case;
1192       Separate_Suffix : File_Name_Type := No_File;
1193
1194       Lang_Index : Language_Index := No_Language_Index;
1195       --  The index of the language data being checked
1196
1197       Prev_Index : Language_Index := No_Language_Index;
1198       --  The index of the previous language
1199
1200       Current_Language : Name_Id := No_Name;
1201       --  The name of the language
1202
1203       Lang_Data : Language_Data;
1204       --  The data of the language being checked
1205
1206       procedure Get_Language_Index_Of (Language : Name_Id);
1207       --  Get the language index of Language, if Language is one of the
1208       --  languages of the project.
1209
1210       procedure Process_Project_Level_Simple_Attributes;
1211       --  Process the simple attributes at the project level
1212
1213       procedure Process_Project_Level_Array_Attributes;
1214       --  Process the associate array attributes at the project level
1215
1216       procedure Process_Packages;
1217       --  Read the packages of the project
1218
1219       ---------------------------
1220       -- Get_Language_Index_Of --
1221       ---------------------------
1222
1223       procedure Get_Language_Index_Of (Language : Name_Id) is
1224          Real_Language : Name_Id;
1225
1226       begin
1227          Get_Name_String (Language);
1228          To_Lower (Name_Buffer (1 .. Name_Len));
1229          Real_Language := Name_Find;
1230
1231          --  Nothing to do if the language is the same as the current language
1232
1233          if Current_Language /= Real_Language then
1234             Lang_Index := Data.First_Language_Processing;
1235             while Lang_Index /= No_Language_Index loop
1236                exit when In_Tree.Languages_Data.Table (Lang_Index).Name =
1237                  Real_Language;
1238                Lang_Index :=
1239                  In_Tree.Languages_Data.Table (Lang_Index).Next;
1240             end loop;
1241
1242             if Lang_Index = No_Language_Index then
1243                Current_Language := No_Name;
1244             else
1245                Current_Language := Real_Language;
1246             end if;
1247          end if;
1248       end Get_Language_Index_Of;
1249
1250       ----------------------
1251       -- Process_Packages --
1252       ----------------------
1253
1254       procedure Process_Packages is
1255          Packages : Package_Id;
1256          Element  : Package_Element;
1257
1258          procedure Process_Binder (Arrays : Array_Id);
1259          --  Process the associate array attributes of package Binder
1260
1261          procedure Process_Builder (Attributes : Variable_Id);
1262          --  Process the simple attributes of package Builder
1263
1264          procedure Process_Compiler (Arrays : Array_Id);
1265          --  Process the associate array attributes of package Compiler
1266
1267          procedure Process_Naming (Attributes : Variable_Id);
1268          --  Process the simple attributes of package Naming
1269
1270          procedure Process_Naming (Arrays : Array_Id);
1271          --  Process the associate array attributes of package Naming
1272
1273          procedure Process_Linker (Attributes : Variable_Id);
1274          --  Process the simple attributes of package Linker of a
1275          --  configuration project.
1276
1277          --------------------
1278          -- Process_Binder --
1279          --------------------
1280
1281          procedure Process_Binder (Arrays : Array_Id) is
1282             Current_Array_Id : Array_Id;
1283             Current_Array    : Array_Data;
1284             Element_Id       : Array_Element_Id;
1285             Element          : Array_Element;
1286
1287          begin
1288             --  Process the associative array attribute of package Binder
1289
1290             Current_Array_Id := Arrays;
1291             while Current_Array_Id /= No_Array loop
1292                Current_Array := In_Tree.Arrays.Table (Current_Array_Id);
1293
1294                Element_Id := Current_Array.Value;
1295                while Element_Id /= No_Array_Element loop
1296                   Element := In_Tree.Array_Elements.Table (Element_Id);
1297
1298                   --  Get the name of the language
1299
1300                   Get_Language_Index_Of (Element.Index);
1301
1302                   if Lang_Index /= No_Language_Index then
1303                      case Current_Array.Name is
1304                         when Name_Driver =>
1305
1306                            --  Attribute Driver (<language>)
1307
1308                            In_Tree.Languages_Data.Table
1309                              (Lang_Index).Config.Binder_Driver :=
1310                              File_Name_Type (Element.Value.Value);
1311
1312                         when Name_Required_Switches =>
1313                            Put (Into_List =>
1314                                 In_Tree.Languages_Data.Table
1315                                   (Lang_Index).Config.Binder_Required_Switches,
1316                                 From_List => Element.Value.Values,
1317                                 In_Tree   => In_Tree);
1318
1319                         when Name_Prefix =>
1320
1321                            --  Attribute Prefix (<language>)
1322
1323                            In_Tree.Languages_Data.Table
1324                              (Lang_Index).Config.Binder_Prefix :=
1325                              Element.Value.Value;
1326
1327                         when Name_Objects_Path =>
1328
1329                            --  Attribute Objects_Path (<language>)
1330
1331                            In_Tree.Languages_Data.Table
1332                              (Lang_Index).Config.Objects_Path :=
1333                              Element.Value.Value;
1334
1335                         when Name_Objects_Path_File =>
1336
1337                            --  Attribute Objects_Path (<language>)
1338
1339                            In_Tree.Languages_Data.Table
1340                              (Lang_Index).Config.Objects_Path_File :=
1341                              Element.Value.Value;
1342
1343                         when others =>
1344                            null;
1345                      end case;
1346                   end if;
1347
1348                   Element_Id := Element.Next;
1349                end loop;
1350
1351                Current_Array_Id := Current_Array.Next;
1352             end loop;
1353          end Process_Binder;
1354
1355          ---------------------
1356          -- Process_Builder --
1357          ---------------------
1358
1359          procedure Process_Builder (Attributes : Variable_Id) is
1360             Attribute_Id : Variable_Id;
1361             Attribute    : Variable;
1362
1363          begin
1364             --  Process non associated array attribute from package Builder
1365
1366             Attribute_Id := Attributes;
1367             while Attribute_Id /= No_Variable loop
1368                Attribute :=
1369                  In_Tree.Variable_Elements.Table (Attribute_Id);
1370
1371                if not Attribute.Value.Default then
1372                   if Attribute.Name = Name_Executable_Suffix then
1373
1374                      --  Attribute Executable_Suffix: the suffix of the
1375                      --  executables.
1376
1377                      Data.Config.Executable_Suffix :=
1378                        Attribute.Value.Value;
1379                   end if;
1380                end if;
1381
1382                Attribute_Id := Attribute.Next;
1383             end loop;
1384          end Process_Builder;
1385
1386          ----------------------
1387          -- Process_Compiler --
1388          ----------------------
1389
1390          procedure Process_Compiler (Arrays : Array_Id) is
1391             Current_Array_Id : Array_Id;
1392             Current_Array    : Array_Data;
1393             Element_Id       : Array_Element_Id;
1394             Element          : Array_Element;
1395             List             : String_List_Id;
1396
1397          begin
1398             --  Process the associative array attribute of package Compiler
1399
1400             Current_Array_Id := Arrays;
1401             while Current_Array_Id /= No_Array loop
1402                Current_Array := In_Tree.Arrays.Table (Current_Array_Id);
1403
1404                Element_Id := Current_Array.Value;
1405                while Element_Id /= No_Array_Element loop
1406                   Element := In_Tree.Array_Elements.Table (Element_Id);
1407
1408                   --  Get the name of the language
1409
1410                   Get_Language_Index_Of (Element.Index);
1411
1412                   if Lang_Index /= No_Language_Index then
1413                      case Current_Array.Name is
1414                         when Name_Dependency_Switches =>
1415
1416                            --  Attribute Dependency_Switches (<language>)
1417
1418                            if In_Tree.Languages_Data.Table
1419                                 (Lang_Index).Config.Dependency_Kind = None
1420                            then
1421                               In_Tree.Languages_Data.Table
1422                                 (Lang_Index).Config.Dependency_Kind :=
1423                                   Makefile;
1424                            end if;
1425
1426                            List := Element.Value.Values;
1427
1428                            if List /= Nil_String then
1429                               Put (Into_List =>
1430                                      In_Tree.Languages_Data.Table
1431                                        (Lang_Index).Config.Dependency_Option,
1432                                    From_List => List,
1433                                    In_Tree   => In_Tree);
1434                            end if;
1435
1436                         when Name_Dependency_Driver =>
1437
1438                            --  Attribute Dependency_Driver (<language>)
1439
1440                            if In_Tree.Languages_Data.Table
1441                              (Lang_Index).Config.Dependency_Kind = None
1442                            then
1443                               In_Tree.Languages_Data.Table
1444                                 (Lang_Index).Config.Dependency_Kind :=
1445                                 Makefile;
1446                            end if;
1447
1448                            List := Element.Value.Values;
1449
1450                            if List /= Nil_String then
1451                               Put (Into_List =>
1452                                      In_Tree.Languages_Data.Table
1453                                        (Lang_Index).Config.Compute_Dependency,
1454                                    From_List => List,
1455                                    In_Tree   => In_Tree);
1456                            end if;
1457
1458                         when Name_Include_Switches =>
1459
1460                            --  Attribute Include_Switches (<language>)
1461
1462                            List := Element.Value.Values;
1463
1464                            if List = Nil_String then
1465                               Error_Msg
1466                                 (Project,
1467                                  In_Tree,
1468                                  "include option cannot be null",
1469                                  Element.Value.Location);
1470                            end if;
1471
1472                            Put (Into_List =>
1473                                 In_Tree.Languages_Data.Table
1474                                   (Lang_Index).Config.Include_Option,
1475                                 From_List => List,
1476                                 In_Tree   => In_Tree);
1477
1478                         when Name_Include_Path =>
1479
1480                            --  Attribute Include_Path (<language>)
1481
1482                            In_Tree.Languages_Data.Table
1483                              (Lang_Index).Config.Include_Path :=
1484                              Element.Value.Value;
1485
1486                         when Name_Include_Path_File =>
1487
1488                            --  Attribute Include_Path_File (<language>)
1489
1490                            In_Tree.Languages_Data.Table
1491                              (Lang_Index).Config.Include_Path_File :=
1492                              Element.Value.Value;
1493
1494                         when Name_Driver =>
1495
1496                            --  Attribute Driver (<language>)
1497
1498                            Get_Name_String (Element.Value.Value);
1499
1500                            In_Tree.Languages_Data.Table
1501                              (Lang_Index).Config.Compiler_Driver :=
1502                              File_Name_Type (Element.Value.Value);
1503
1504                         when Name_Required_Switches =>
1505                            Put (Into_List =>
1506                                 In_Tree.Languages_Data.Table
1507                                   (Lang_Index).Config.
1508                                                  Compiler_Required_Switches,
1509                                 From_List => Element.Value.Values,
1510                                 In_Tree   => In_Tree);
1511
1512                         when Name_Pic_Option =>
1513
1514                            --  Attribute Compiler_Pic_Option (<language>)
1515
1516                            List := Element.Value.Values;
1517
1518                            if List = Nil_String then
1519                               Error_Msg
1520                                 (Project,
1521                                  In_Tree,
1522                                  "compiler PIC option cannot be null",
1523                                  Element.Value.Location);
1524                            end if;
1525
1526                            Put (Into_List =>
1527                                 In_Tree.Languages_Data.Table
1528                                   (Lang_Index).Config.Compilation_PIC_Option,
1529                                 From_List => List,
1530                                 In_Tree   => In_Tree);
1531
1532                         when Name_Mapping_File_Switches =>
1533
1534                            --  Attribute Mapping_File_Switches (<language>)
1535
1536                            List := Element.Value.Values;
1537
1538                            if List = Nil_String then
1539                               Error_Msg
1540                                 (Project,
1541                                  In_Tree,
1542                                  "mapping file switches cannot be null",
1543                                  Element.Value.Location);
1544                            end if;
1545
1546                            Put (Into_List =>
1547                                 In_Tree.Languages_Data.Table
1548                                   (Lang_Index).Config.Mapping_File_Switches,
1549                                 From_List => List,
1550                                 In_Tree   => In_Tree);
1551
1552                         when Name_Mapping_Spec_Suffix =>
1553
1554                            --  Attribute Mapping_Spec_Suffix (<language>)
1555
1556                            In_Tree.Languages_Data.Table
1557                              (Lang_Index).Config.Mapping_Spec_Suffix :=
1558                                File_Name_Type (Element.Value.Value);
1559
1560                         when Name_Mapping_Body_Suffix =>
1561
1562                            --  Attribute Mapping_Body_Suffix (<language>)
1563
1564                            In_Tree.Languages_Data.Table
1565                              (Lang_Index).Config.Mapping_Body_Suffix :=
1566                                File_Name_Type (Element.Value.Value);
1567
1568                         when Name_Config_File_Switches =>
1569
1570                            --  Attribute Config_File_Switches (<language>)
1571
1572                            List := Element.Value.Values;
1573
1574                            if List = Nil_String then
1575                               Error_Msg
1576                                 (Project,
1577                                  In_Tree,
1578                                  "config file switches cannot be null",
1579                                  Element.Value.Location);
1580                            end if;
1581
1582                            Put (Into_List =>
1583                                 In_Tree.Languages_Data.Table
1584                                   (Lang_Index).Config.Config_File_Switches,
1585                                 From_List => List,
1586                                 In_Tree   => In_Tree);
1587
1588                         when Name_Objects_Path =>
1589
1590                            --  Attribute Objects_Path (<language>)
1591
1592                            In_Tree.Languages_Data.Table
1593                              (Lang_Index).Config.Objects_Path :=
1594                              Element.Value.Value;
1595
1596                         when Name_Objects_Path_File =>
1597
1598                            --  Attribute Objects_Path_File (<language>)
1599
1600                            In_Tree.Languages_Data.Table
1601                              (Lang_Index).Config.Objects_Path_File :=
1602                              Element.Value.Value;
1603
1604                         when Name_Config_Body_File_Name =>
1605
1606                            --  Attribute Config_Body_File_Name (<language>)
1607
1608                            In_Tree.Languages_Data.Table
1609                              (Lang_Index).Config.Config_Body :=
1610                              Element.Value.Value;
1611
1612                         when Name_Config_Body_File_Name_Pattern =>
1613
1614                            --  Attribute Config_Body_File_Name_Pattern
1615                            --  (<language>)
1616
1617                            In_Tree.Languages_Data.Table
1618                              (Lang_Index).Config.Config_Body_Pattern :=
1619                                Element.Value.Value;
1620
1621                         when Name_Config_Spec_File_Name =>
1622
1623                            --  Attribute Config_Spec_File_Name (<language>)
1624
1625                            In_Tree.Languages_Data.Table
1626                              (Lang_Index).Config.Config_Spec :=
1627                              Element.Value.Value;
1628
1629                         when Name_Config_Spec_File_Name_Pattern =>
1630
1631                            --  Attribute Config_Spec_File_Name_Pattern
1632                            --  (<language>)
1633
1634                            In_Tree.Languages_Data.Table
1635                              (Lang_Index).Config.Config_Spec_Pattern :=
1636                                Element.Value.Value;
1637
1638                         when Name_Config_File_Unique =>
1639
1640                            --  Attribute Config_File_Unique (<language>)
1641
1642                            begin
1643                               In_Tree.Languages_Data.Table
1644                                 (Lang_Index).Config.Config_File_Unique :=
1645                                   Boolean'Value
1646                                     (Get_Name_String (Element.Value.Value));
1647                            exception
1648                               when Constraint_Error =>
1649                                  Error_Msg
1650                                    (Project,
1651                                     In_Tree,
1652                                     "illegal value for Config_File_Unique",
1653                                     Element.Value.Location);
1654                            end;
1655
1656                         when others =>
1657                            null;
1658                      end case;
1659                   end if;
1660
1661                   Element_Id := Element.Next;
1662                end loop;
1663
1664                Current_Array_Id := Current_Array.Next;
1665             end loop;
1666          end Process_Compiler;
1667
1668          --------------------
1669          -- Process_Naming --
1670          --------------------
1671
1672          procedure Process_Naming (Attributes : Variable_Id) is
1673             Attribute_Id : Variable_Id;
1674             Attribute    : Variable;
1675
1676          begin
1677             --  Process non associated array attribute from package Naming
1678
1679             Attribute_Id := Attributes;
1680             while Attribute_Id /= No_Variable loop
1681                Attribute :=
1682                  In_Tree.Variable_Elements.Table (Attribute_Id);
1683
1684                if not Attribute.Value.Default then
1685                   if Attribute.Name = Name_Separate_Suffix then
1686
1687                      --  Attribute Separate_Suffix
1688
1689                      Separate_Suffix := File_Name_Type (Attribute.Value.Value);
1690
1691                   elsif Attribute.Name = Name_Casing then
1692
1693                      --  Attribute Casing
1694
1695                      begin
1696                         Casing :=
1697                           Value (Get_Name_String (Attribute.Value.Value));
1698
1699                      exception
1700                         when Constraint_Error =>
1701                            Error_Msg
1702                              (Project,
1703                               In_Tree,
1704                               "invalid value for Casing",
1705                               Attribute.Value.Location);
1706                      end;
1707
1708                   elsif Attribute.Name = Name_Dot_Replacement then
1709
1710                      --  Attribute Dot_Replacement
1711
1712                      Dot_Replacement := File_Name_Type (Attribute.Value.Value);
1713
1714                   end if;
1715                end if;
1716
1717                Attribute_Id := Attribute.Next;
1718             end loop;
1719          end Process_Naming;
1720
1721          procedure Process_Naming (Arrays : Array_Id) is
1722             Current_Array_Id : Array_Id;
1723             Current_Array    : Array_Data;
1724             Element_Id       : Array_Element_Id;
1725             Element          : Array_Element;
1726          begin
1727             --  Process the associative array attribute of package Naming
1728
1729             Current_Array_Id := Arrays;
1730             while Current_Array_Id /= No_Array loop
1731                Current_Array := In_Tree.Arrays.Table (Current_Array_Id);
1732
1733                Element_Id := Current_Array.Value;
1734                while Element_Id /= No_Array_Element loop
1735                   Element := In_Tree.Array_Elements.Table (Element_Id);
1736
1737                   --  Get the name of the language
1738
1739                   Get_Language_Index_Of (Element.Index);
1740
1741                   if Lang_Index /= No_Language_Index then
1742                      case Current_Array.Name is
1743                         when Name_Specification_Suffix | Name_Spec_Suffix =>
1744
1745                            --  Attribute Spec_Suffix (<language>)
1746
1747                            In_Tree.Languages_Data.Table
1748                              (Lang_Index).Config.Naming_Data.Spec_Suffix :=
1749                                File_Name_Type (Element.Value.Value);
1750
1751                         when Name_Implementation_Suffix | Name_Body_Suffix =>
1752
1753                            --  Attribute Body_Suffix (<language>)
1754
1755                            In_Tree.Languages_Data.Table
1756                              (Lang_Index).Config.Naming_Data.Body_Suffix :=
1757                                File_Name_Type (Element.Value.Value);
1758
1759                            In_Tree.Languages_Data.Table
1760                              (Lang_Index).Config.Naming_Data.Separate_Suffix :=
1761                                File_Name_Type (Element.Value.Value);
1762
1763                         when others =>
1764                            null;
1765                      end case;
1766                   end if;
1767
1768                   Element_Id := Element.Next;
1769                end loop;
1770
1771                Current_Array_Id := Current_Array.Next;
1772             end loop;
1773          end Process_Naming;
1774
1775          --------------------
1776          -- Process_Linker --
1777          --------------------
1778
1779          procedure Process_Linker (Attributes : Variable_Id) is
1780             Attribute_Id : Variable_Id;
1781             Attribute    : Variable;
1782
1783          begin
1784             --  Process non associated array attribute from package Linker
1785
1786             Attribute_Id := Attributes;
1787             while Attribute_Id /= No_Variable loop
1788                Attribute :=
1789                  In_Tree.Variable_Elements.Table (Attribute_Id);
1790
1791                if not Attribute.Value.Default then
1792                   if Attribute.Name = Name_Driver then
1793
1794                      --  Attribute Linker'Driver: the default linker to use
1795
1796                      Data.Config.Linker :=
1797                        Path_Name_Type (Attribute.Value.Value);
1798
1799                   elsif Attribute.Name = Name_Required_Switches then
1800
1801                      --  Attribute Required_Switches: the minimum
1802                      --  options to use when invoking the linker
1803
1804                      Put (Into_List =>
1805                             Data.Config.Minimum_Linker_Options,
1806                           From_List => Attribute.Value.Values,
1807                           In_Tree   => In_Tree);
1808
1809                   elsif Attribute.Name = Name_Map_File_Option then
1810                      Data.Config.Map_File_Option := Attribute.Value.Value;
1811                   end if;
1812                end if;
1813
1814                Attribute_Id := Attribute.Next;
1815             end loop;
1816          end Process_Linker;
1817
1818       --  Start of processing for Process_Packages
1819
1820       begin
1821          Packages := Data.Decl.Packages;
1822          while Packages /= No_Package loop
1823             Element := In_Tree.Packages.Table (Packages);
1824
1825             case Element.Name is
1826                when Name_Binder =>
1827
1828                   --  Process attributes of package Binder
1829
1830                   Process_Binder (Element.Decl.Arrays);
1831
1832                when Name_Builder =>
1833
1834                   --  Process attributes of package Builder
1835
1836                   Process_Builder (Element.Decl.Attributes);
1837
1838                when Name_Compiler =>
1839
1840                   --  Process attributes of package Compiler
1841
1842                   Process_Compiler (Element.Decl.Arrays);
1843
1844                when Name_Linker =>
1845
1846                   --  Process attributes of package Linker
1847
1848                   Process_Linker (Element.Decl.Attributes);
1849
1850                when Name_Naming =>
1851
1852                   --  Process attributes of package Naming
1853
1854                   Process_Naming (Element.Decl.Attributes);
1855                   Process_Naming (Element.Decl.Arrays);
1856
1857                when others =>
1858                   null;
1859             end case;
1860
1861             Packages := Element.Next;
1862          end loop;
1863       end Process_Packages;
1864
1865       ---------------------------------------------
1866       -- Process_Project_Level_Simple_Attributes --
1867       ---------------------------------------------
1868
1869       procedure Process_Project_Level_Simple_Attributes is
1870          Attribute_Id : Variable_Id;
1871          Attribute    : Variable;
1872          List         : String_List_Id;
1873
1874       begin
1875          --  Process non associated array attribute at project level
1876
1877          Attribute_Id := Data.Decl.Attributes;
1878          while Attribute_Id /= No_Variable loop
1879             Attribute :=
1880               In_Tree.Variable_Elements.Table (Attribute_Id);
1881
1882             if not Attribute.Value.Default then
1883                if Attribute.Name = Name_Library_Builder then
1884
1885                   --  Attribute Library_Builder: the application to invoke
1886                   --  to build libraries.
1887
1888                   Data.Config.Library_Builder :=
1889                     Path_Name_Type (Attribute.Value.Value);
1890
1891                elsif Attribute.Name = Name_Archive_Builder then
1892
1893                   --  Attribute Archive_Builder: the archive builder
1894                   --  (usually "ar") and its minimum options (usually "cr").
1895
1896                   List := Attribute.Value.Values;
1897
1898                   if List = Nil_String then
1899                      Error_Msg
1900                        (Project,
1901                         In_Tree,
1902                         "archive builder cannot be null",
1903                         Attribute.Value.Location);
1904                   end if;
1905
1906                   Put (Into_List => Data.Config.Archive_Builder,
1907                        From_List => List,
1908                        In_Tree   => In_Tree);
1909
1910                elsif Attribute.Name = Name_Archive_Builder_Append_Option then
1911
1912                   --  Attribute Archive_Builder: the archive builder
1913                   --  (usually "ar") and its minimum options (usually "cr").
1914
1915                   List := Attribute.Value.Values;
1916
1917                   if List /= Nil_String then
1918                      Put
1919                        (Into_List => Data.Config.Archive_Builder_Append_Option,
1920                         From_List => List,
1921                         In_Tree   => In_Tree);
1922                   end if;
1923
1924                elsif Attribute.Name = Name_Archive_Indexer then
1925
1926                   --  Attribute Archive_Indexer: the optional archive
1927                   --  indexer (usually "ranlib") with its minimum options
1928                   --  (usually none).
1929
1930                   List := Attribute.Value.Values;
1931
1932                   if List = Nil_String then
1933                      Error_Msg
1934                        (Project,
1935                         In_Tree,
1936                         "archive indexer cannot be null",
1937                         Attribute.Value.Location);
1938                   end if;
1939
1940                   Put (Into_List => Data.Config.Archive_Indexer,
1941                        From_List => List,
1942                        In_Tree   => In_Tree);
1943
1944                elsif Attribute.Name = Name_Library_Partial_Linker then
1945
1946                   --  Attribute Library_Partial_Linker: the optional linker
1947                   --  driver with its minimum options, to partially link
1948                   --  archives.
1949
1950                   List := Attribute.Value.Values;
1951
1952                   if List = Nil_String then
1953                      Error_Msg
1954                        (Project,
1955                         In_Tree,
1956                         "partial linker cannot be null",
1957                         Attribute.Value.Location);
1958                   end if;
1959
1960                   Put (Into_List => Data.Config.Lib_Partial_Linker,
1961                        From_List => List,
1962                        In_Tree   => In_Tree);
1963
1964                elsif Attribute.Name = Name_Library_GCC then
1965                   Data.Config.Shared_Lib_Driver :=
1966                     File_Name_Type (Attribute.Value.Value);
1967
1968                elsif Attribute.Name = Name_Archive_Suffix then
1969                   Data.Config.Archive_Suffix :=
1970                     File_Name_Type (Attribute.Value.Value);
1971
1972                elsif Attribute.Name = Name_Linker_Executable_Option then
1973
1974                   --  Attribute Linker_Executable_Option: optional options
1975                   --  to specify an executable name. Defaults to "-o".
1976
1977                   List := Attribute.Value.Values;
1978
1979                   if List = Nil_String then
1980                      Error_Msg
1981                        (Project,
1982                         In_Tree,
1983                         "linker executable option cannot be null",
1984                         Attribute.Value.Location);
1985                   end if;
1986
1987                   Put (Into_List => Data.Config.Linker_Executable_Option,
1988                        From_List => List,
1989                        In_Tree   => In_Tree);
1990
1991                elsif Attribute.Name = Name_Linker_Lib_Dir_Option then
1992
1993                   --  Attribute Linker_Lib_Dir_Option: optional options
1994                   --  to specify a library search directory. Defaults to
1995                   --  "-L".
1996
1997                   Get_Name_String (Attribute.Value.Value);
1998
1999                   if Name_Len = 0 then
2000                      Error_Msg
2001                        (Project,
2002                         In_Tree,
2003                         "linker library directory option cannot be empty",
2004                         Attribute.Value.Location);
2005                   end if;
2006
2007                   Data.Config.Linker_Lib_Dir_Option := Attribute.Value.Value;
2008
2009                elsif Attribute.Name = Name_Linker_Lib_Name_Option then
2010
2011                   --  Attribute Linker_Lib_Name_Option: optional options
2012                   --  to specify the name of a library to be linked in.
2013                   --  Defaults to "-l".
2014
2015                   Get_Name_String (Attribute.Value.Value);
2016
2017                   if Name_Len = 0 then
2018                      Error_Msg
2019                        (Project,
2020                         In_Tree,
2021                         "linker library name option cannot be empty",
2022                         Attribute.Value.Location);
2023                   end if;
2024
2025                   Data.Config.Linker_Lib_Name_Option := Attribute.Value.Value;
2026
2027                elsif Attribute.Name = Name_Run_Path_Option then
2028
2029                   --  Attribute Run_Path_Option: optional options to
2030                   --  specify a path for libraries.
2031
2032                   List := Attribute.Value.Values;
2033
2034                   if List /= Nil_String then
2035                      Put (Into_List => Data.Config.Run_Path_Option,
2036                           From_List => List,
2037                           In_Tree   => In_Tree);
2038                   end if;
2039
2040                elsif Attribute.Name = Name_Library_Support then
2041                   declare
2042                      pragma Unsuppress (All_Checks);
2043                   begin
2044                      Data.Config.Lib_Support :=
2045                        Library_Support'Value (Get_Name_String
2046                                               (Attribute.Value.Value));
2047                   exception
2048                      when Constraint_Error =>
2049                         Error_Msg
2050                           (Project,
2051                            In_Tree,
2052                            "invalid value """ &
2053                            Get_Name_String (Attribute.Value.Value) &
2054                            """ for Library_Support",
2055                            Attribute.Value.Location);
2056                   end;
2057
2058                elsif Attribute.Name = Name_Shared_Library_Prefix then
2059                   Data.Config.Shared_Lib_Prefix :=
2060                     File_Name_Type (Attribute.Value.Value);
2061
2062                elsif Attribute.Name = Name_Shared_Library_Suffix then
2063                   Data.Config.Shared_Lib_Suffix :=
2064                     File_Name_Type (Attribute.Value.Value);
2065
2066                elsif Attribute.Name = Name_Symbolic_Link_Supported then
2067                   declare
2068                      pragma Unsuppress (All_Checks);
2069                   begin
2070                      Data.Config.Symbolic_Link_Supported :=
2071                        Boolean'Value (Get_Name_String
2072                                       (Attribute.Value.Value));
2073                   exception
2074                      when Constraint_Error =>
2075                         Error_Msg
2076                           (Project,
2077                            In_Tree,
2078                            "invalid value """
2079                              & Get_Name_String (Attribute.Value.Value)
2080                              & """ for Symbolic_Link_Supported",
2081                            Attribute.Value.Location);
2082                   end;
2083
2084                elsif
2085                  Attribute.Name = Name_Library_Major_Minor_Id_Supported
2086                then
2087                   declare
2088                      pragma Unsuppress (All_Checks);
2089                   begin
2090                      Data.Config.Lib_Maj_Min_Id_Supported :=
2091                        Boolean'Value (Get_Name_String
2092                                       (Attribute.Value.Value));
2093                   exception
2094                      when Constraint_Error =>
2095                         Error_Msg
2096                           (Project,
2097                            In_Tree,
2098                            "invalid value """ &
2099                            Get_Name_String (Attribute.Value.Value) &
2100                            """ for Library_Major_Minor_Id_Supported",
2101                            Attribute.Value.Location);
2102                   end;
2103
2104                elsif Attribute.Name = Name_Library_Auto_Init_Supported then
2105                   declare
2106                      pragma Unsuppress (All_Checks);
2107                   begin
2108                      Data.Config.Auto_Init_Supported :=
2109                        Boolean'Value (Get_Name_String (Attribute.Value.Value));
2110                   exception
2111                      when Constraint_Error =>
2112                         Error_Msg
2113                           (Project,
2114                            In_Tree,
2115                            "invalid value """
2116                              & Get_Name_String (Attribute.Value.Value)
2117                              & """ for Library_Auto_Init_Supported",
2118                            Attribute.Value.Location);
2119                   end;
2120
2121                elsif Attribute.Name = Name_Shared_Library_Minimum_Switches then
2122                   List := Attribute.Value.Values;
2123
2124                   if List /= Nil_String then
2125                      Put (Into_List => Data.Config.Shared_Lib_Min_Options,
2126                           From_List => List,
2127                           In_Tree   => In_Tree);
2128                   end if;
2129
2130                elsif Attribute.Name = Name_Library_Version_Switches then
2131                   List := Attribute.Value.Values;
2132
2133                   if List /= Nil_String then
2134                      Put (Into_List => Data.Config.Lib_Version_Options,
2135                           From_List => List,
2136                           In_Tree   => In_Tree);
2137                   end if;
2138                end if;
2139             end if;
2140
2141             Attribute_Id := Attribute.Next;
2142          end loop;
2143       end Process_Project_Level_Simple_Attributes;
2144
2145       --------------------------------------------
2146       -- Process_Project_Level_Array_Attributes --
2147       --------------------------------------------
2148
2149       procedure Process_Project_Level_Array_Attributes is
2150          Current_Array_Id : Array_Id;
2151          Current_Array    : Array_Data;
2152          Element_Id       : Array_Element_Id;
2153          Element          : Array_Element;
2154          List             : String_List_Id;
2155
2156       begin
2157          --  Process the associative array attributes at project level
2158
2159          Current_Array_Id := Data.Decl.Arrays;
2160          while Current_Array_Id /= No_Array loop
2161             Current_Array := In_Tree.Arrays.Table (Current_Array_Id);
2162
2163             Element_Id := Current_Array.Value;
2164             while Element_Id /= No_Array_Element loop
2165                Element := In_Tree.Array_Elements.Table (Element_Id);
2166
2167                --  Get the name of the language
2168
2169                Get_Language_Index_Of (Element.Index);
2170
2171                if Lang_Index /= No_Language_Index then
2172                   case Current_Array.Name is
2173                      when Name_Inherit_Source_Path =>
2174                         List := Element.Value.Values;
2175
2176                         if List /= Nil_String then
2177                            Put
2178                              (Into_List  =>
2179                                 In_Tree.Languages_Data.Table (Lang_Index).
2180                                   Config.Include_Compatible_Languages,
2181                               From_List  => List,
2182                               In_Tree    => In_Tree,
2183                               Lower_Case => True);
2184                         end if;
2185
2186                      when Name_Toolchain_Description =>
2187
2188                         --  Attribute Toolchain_Description (<language>)
2189
2190                         In_Tree.Languages_Data.Table
2191                           (Lang_Index).Config.Toolchain_Description :=
2192                           Element.Value.Value;
2193
2194                      when Name_Toolchain_Version =>
2195
2196                         --  Attribute Toolchain_Version (<language>)
2197
2198                         In_Tree.Languages_Data.Table
2199                           (Lang_Index).Config.Toolchain_Version :=
2200                           Element.Value.Value;
2201
2202                      when Name_Runtime_Library_Dir =>
2203
2204                         --  Attribute Runtime_Library_Dir (<language>)
2205
2206                         In_Tree.Languages_Data.Table
2207                           (Lang_Index).Config.Runtime_Library_Dir :=
2208                           Element.Value.Value;
2209
2210                      when Name_Object_Generated =>
2211                         declare
2212                            pragma Unsuppress (All_Checks);
2213                            Value : Boolean;
2214
2215                         begin
2216                            Value :=
2217                              Boolean'Value
2218                                (Get_Name_String (Element.Value.Value));
2219
2220                            In_Tree.Languages_Data.Table
2221                              (Lang_Index).Config.Object_Generated := Value;
2222
2223                            --  If no object is generated, no object may be
2224                            --  linked.
2225
2226                            if not Value then
2227                               In_Tree.Languages_Data.Table
2228                                 (Lang_Index).Config.Objects_Linked := False;
2229                            end if;
2230
2231                         exception
2232                            when Constraint_Error =>
2233                               Error_Msg
2234                                 (Project,
2235                                  In_Tree,
2236                                  "invalid value """
2237                                  & Get_Name_String (Element.Value.Value)
2238                                  & """ for Object_Generated",
2239                                  Element.Value.Location);
2240                         end;
2241
2242                      when Name_Objects_Linked =>
2243                         declare
2244                            pragma Unsuppress (All_Checks);
2245                            Value : Boolean;
2246
2247                         begin
2248                            Value :=
2249                              Boolean'Value
2250                                (Get_Name_String (Element.Value.Value));
2251
2252                            --  No change if Object_Generated is False, as this
2253                            --  forces Objects_Linked to be False too.
2254
2255                            if In_Tree.Languages_Data.Table
2256                              (Lang_Index).Config.Object_Generated
2257                            then
2258                               In_Tree.Languages_Data.Table
2259                                 (Lang_Index).Config.Objects_Linked :=
2260                                 Value;
2261                            end if;
2262
2263                         exception
2264                            when Constraint_Error =>
2265                               Error_Msg
2266                                 (Project,
2267                                  In_Tree,
2268                                  "invalid value """
2269                                  & Get_Name_String (Element.Value.Value)
2270                                  & """ for Objects_Linked",
2271                                  Element.Value.Location);
2272                         end;
2273                      when others =>
2274                         null;
2275                   end case;
2276                end if;
2277
2278                Element_Id := Element.Next;
2279             end loop;
2280
2281             Current_Array_Id := Current_Array.Next;
2282          end loop;
2283       end Process_Project_Level_Array_Attributes;
2284
2285    begin
2286       Process_Project_Level_Simple_Attributes;
2287       Process_Project_Level_Array_Attributes;
2288       Process_Packages;
2289
2290       --  For unit based languages, set Casing, Dot_Replacement and
2291       --  Separate_Suffix in Naming_Data.
2292
2293       Lang_Index := Data.First_Language_Processing;
2294       while Lang_Index /= No_Language_Index loop
2295          if In_Tree.Languages_Data.Table
2296            (Lang_Index).Name = Name_Ada
2297          then
2298             In_Tree.Languages_Data.Table
2299               (Lang_Index).Config.Naming_Data.Casing := Casing;
2300             In_Tree.Languages_Data.Table
2301               (Lang_Index).Config.Naming_Data.Dot_Replacement :=
2302               Dot_Replacement;
2303
2304             if Separate_Suffix /= No_File then
2305                In_Tree.Languages_Data.Table
2306                  (Lang_Index).Config.Naming_Data.Separate_Suffix :=
2307                  Separate_Suffix;
2308             end if;
2309
2310             exit;
2311          end if;
2312
2313          Lang_Index := In_Tree.Languages_Data.Table (Lang_Index).Next;
2314       end loop;
2315
2316       --  Give empty names to various prefixes/suffixes, if they have not
2317       --  been specified in the configuration.
2318
2319       if Data.Config.Archive_Suffix = No_File then
2320          Data.Config.Archive_Suffix := Empty_File;
2321       end if;
2322
2323       if Data.Config.Shared_Lib_Prefix = No_File then
2324          Data.Config.Shared_Lib_Prefix := Empty_File;
2325       end if;
2326
2327       if Data.Config.Shared_Lib_Suffix = No_File then
2328          Data.Config.Shared_Lib_Suffix := Empty_File;
2329       end if;
2330
2331       Lang_Index := Data.First_Language_Processing;
2332       while Lang_Index /= No_Language_Index loop
2333          Lang_Data := In_Tree.Languages_Data.Table (Lang_Index);
2334
2335          Current_Language := Lang_Data.Display_Name;
2336
2337          --  For all languages, Compiler_Driver needs to be specified
2338
2339          if Lang_Data.Config.Compiler_Driver = No_File then
2340             Error_Msg_Name_1 := Current_Language;
2341             Error_Msg
2342               (Project,
2343                In_Tree,
2344                "?no compiler specified for language %%" &
2345                ", ignoring all its sources",
2346                No_Location);
2347
2348             if Lang_Index = Data.First_Language_Processing then
2349                Data.First_Language_Processing :=
2350                  Lang_Data.Next;
2351             else
2352                In_Tree.Languages_Data.Table (Prev_Index).Next :=
2353                  Lang_Data.Next;
2354             end if;
2355
2356          elsif Lang_Data.Name = Name_Ada then
2357             Prev_Index := Lang_Index;
2358
2359             --  For unit based languages, Dot_Replacement, Spec_Suffix and
2360             --  Body_Suffix need to be specified.
2361
2362             if Lang_Data.Config.Naming_Data.Dot_Replacement = No_File then
2363                Error_Msg
2364                  (Project,
2365                   In_Tree,
2366                   "Dot_Replacement not specified for Ada",
2367                   No_Location);
2368             end if;
2369
2370             if Lang_Data.Config.Naming_Data.Spec_Suffix = No_File then
2371                Error_Msg
2372                  (Project,
2373                   In_Tree,
2374                   "Spec_Suffix not specified for Ada",
2375                   No_Location);
2376             end if;
2377
2378             if Lang_Data.Config.Naming_Data.Body_Suffix = No_File then
2379                Error_Msg
2380                  (Project,
2381                   In_Tree,
2382                   "Body_Suffix not specified for Ada",
2383                   No_Location);
2384             end if;
2385
2386          else
2387             Prev_Index := Lang_Index;
2388
2389             --  For file based languages, either Spec_Suffix or Body_Suffix
2390             --  need to be specified.
2391
2392             if Lang_Data.Config.Naming_Data.Spec_Suffix = No_File and then
2393               Lang_Data.Config.Naming_Data.Body_Suffix = No_File
2394             then
2395                Error_Msg_Name_1 := Current_Language;
2396                Error_Msg
2397                  (Project,
2398                   In_Tree,
2399                   "no suffixes specified for %%",
2400                   No_Location);
2401             end if;
2402          end if;
2403
2404          Lang_Index := Lang_Data.Next;
2405       end loop;
2406    end Check_Configuration;
2407
2408    -------------------------------
2409    -- Check_If_Externally_Built --
2410    -------------------------------
2411
2412    procedure Check_If_Externally_Built
2413      (Project : Project_Id;
2414       In_Tree : Project_Tree_Ref;
2415       Data    : in out Project_Data)
2416    is
2417       Externally_Built : constant Variable_Value :=
2418                            Util.Value_Of
2419                             (Name_Externally_Built,
2420                              Data.Decl.Attributes, In_Tree);
2421
2422    begin
2423       if not Externally_Built.Default then
2424          Get_Name_String (Externally_Built.Value);
2425          To_Lower (Name_Buffer (1 .. Name_Len));
2426
2427          if Name_Buffer (1 .. Name_Len) = "true" then
2428             Data.Externally_Built := True;
2429
2430          elsif Name_Buffer (1 .. Name_Len) /= "false" then
2431             Error_Msg (Project, In_Tree,
2432                        "Externally_Built may only be true or false",
2433                        Externally_Built.Location);
2434          end if;
2435       end if;
2436
2437       --  A virtual project extending an externally built project is itself
2438       --  externally built.
2439
2440       if Data.Virtual and then Data.Extends /= No_Project then
2441          Data.Externally_Built :=
2442            In_Tree.Projects.Table (Data.Extends).Externally_Built;
2443       end if;
2444
2445       if Current_Verbosity = High then
2446          Write_Str ("Project is ");
2447
2448          if not Data.Externally_Built then
2449             Write_Str ("not ");
2450          end if;
2451
2452          Write_Line ("externally built.");
2453       end if;
2454    end Check_If_Externally_Built;
2455
2456    ----------------------
2457    -- Check_Interfaces --
2458    ----------------------
2459
2460    procedure Check_Interfaces
2461      (Project : Project_Id;
2462       In_Tree : Project_Tree_Ref;
2463       Data    : in out Project_Data)
2464    is
2465       Interfaces : constant Prj.Variable_Value :=
2466                      Prj.Util.Value_Of
2467                        (Snames.Name_Interfaces,
2468                         Data.Decl.Attributes,
2469                         In_Tree);
2470
2471       List    : String_List_Id;
2472       Element : String_Element;
2473       Name    : File_Name_Type;
2474
2475       Source   : Source_Id;
2476       Src_Data : Source_Data;
2477
2478       Project_2 : Project_Id;
2479       Data_2     : Project_Data;
2480
2481    begin
2482       if not Interfaces.Default then
2483
2484          --  Set In_Interfaces to False for all sources. It will be set to True
2485          --  later for the sources in the Interfaces list.
2486
2487          Project_2 := Project;
2488          Data_2    := Data;
2489          loop
2490             Source := Data_2.First_Source;
2491             while Source /= No_Source loop
2492                Src_Data := In_Tree.Sources.Table (Source);
2493                Src_Data.In_Interfaces := False;
2494                In_Tree.Sources.Table (Source) := Src_Data;
2495                Source := Src_Data.Next_In_Project;
2496             end loop;
2497
2498             Project_2 := Data_2.Extends;
2499
2500             exit when Project_2 = No_Project;
2501
2502             Data_2 := In_Tree.Projects.Table (Project_2);
2503          end loop;
2504
2505          List := Interfaces.Values;
2506          while List /= Nil_String loop
2507             Element := In_Tree.String_Elements.Table (List);
2508             Get_Name_String (Element.Value);
2509             Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
2510             Name := Name_Find;
2511
2512             Project_2 := Project;
2513             Data_2 := Data;
2514             Big_Loop :
2515             loop
2516                Source := Data_2.First_Source;
2517                while Source /= No_Source loop
2518                   Src_Data := In_Tree.Sources.Table (Source);
2519                   if Src_Data.File = Name then
2520                      if not Src_Data.Locally_Removed then
2521                         In_Tree.Sources.Table (Source).In_Interfaces := True;
2522                         In_Tree.Sources.Table
2523                           (Source).Declared_In_Interfaces := True;
2524
2525                         if Src_Data.Other_Part /= No_Source then
2526                            In_Tree.Sources.Table
2527                              (Src_Data.Other_Part).In_Interfaces := True;
2528                            In_Tree.Sources.Table
2529                              (Src_Data.Other_Part).Declared_In_Interfaces :=
2530                              True;
2531                         end if;
2532
2533                         if Current_Verbosity = High then
2534                            Write_Str ("   interface: ");
2535                            Write_Line (Get_Name_String (Src_Data.Path.Name));
2536                         end if;
2537                      end if;
2538
2539                      exit Big_Loop;
2540                   end if;
2541
2542                   Source := Src_Data.Next_In_Project;
2543                end loop;
2544
2545                Project_2 := Data_2.Extends;
2546
2547                exit Big_Loop when Project_2 = No_Project;
2548
2549                Data_2 := In_Tree.Projects.Table (Project_2);
2550             end loop Big_Loop;
2551
2552             if Source = No_Source then
2553                Error_Msg_File_1 := File_Name_Type (Element.Value);
2554                Error_Msg_Name_1 := Data.Name;
2555
2556                Error_Msg
2557                  (Project,
2558                   In_Tree,
2559                   "{ cannot be an interface of project %% " &
2560                   "as it is not one of its sources",
2561                   Element.Location);
2562             end if;
2563
2564             List := Element.Next;
2565          end loop;
2566
2567          Data.Interfaces_Defined := True;
2568
2569       elsif Data.Extends /= No_Project then
2570          Data.Interfaces_Defined :=
2571            In_Tree.Projects.Table (Data.Extends).Interfaces_Defined;
2572
2573          if Data.Interfaces_Defined then
2574             Source := Data.First_Source;
2575             while Source /= No_Source loop
2576                Src_Data := In_Tree.Sources.Table (Source);
2577
2578                if not Src_Data.Declared_In_Interfaces then
2579                   Src_Data.In_Interfaces := False;
2580                   In_Tree.Sources.Table (Source) := Src_Data;
2581                end if;
2582
2583                Source := Src_Data.Next_In_Project;
2584             end loop;
2585          end if;
2586       end if;
2587    end Check_Interfaces;
2588
2589    --------------------------
2590    -- Check_Naming_Schemes --
2591    --------------------------
2592
2593    procedure Check_Naming_Schemes
2594      (Data    : in out Project_Data;
2595       Project : Project_Id;
2596       In_Tree : Project_Tree_Ref)
2597    is
2598       Naming_Id : constant Package_Id :=
2599                     Util.Value_Of (Name_Naming, Data.Decl.Packages, In_Tree);
2600       Naming    : Package_Element;
2601
2602       procedure Check_Unit_Names (List : Array_Element_Id);
2603       --  Check that a list of unit names contains only valid names
2604
2605       procedure Get_Exceptions (Kind : Source_Kind);
2606
2607       procedure Get_Unit_Exceptions (Kind : Source_Kind);
2608
2609       ----------------------
2610       -- Check_Unit_Names --
2611       ----------------------
2612
2613       procedure Check_Unit_Names (List : Array_Element_Id) is
2614          Current   : Array_Element_Id;
2615          Element   : Array_Element;
2616          Unit_Name : Name_Id;
2617
2618       begin
2619          --  Loop through elements of the string list
2620
2621          Current := List;
2622          while Current /= No_Array_Element loop
2623             Element := In_Tree.Array_Elements.Table (Current);
2624
2625             --  Put file name in canonical case
2626
2627             if not Osint.File_Names_Case_Sensitive then
2628                Get_Name_String (Element.Value.Value);
2629                Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
2630                Element.Value.Value := Name_Find;
2631             end if;
2632
2633             --  Check that it contains a valid unit name
2634
2635             Get_Name_String (Element.Index);
2636             Check_Ada_Name (Name_Buffer (1 .. Name_Len), Unit_Name);
2637
2638             if Unit_Name = No_Name then
2639                Err_Vars.Error_Msg_Name_1 := Element.Index;
2640                Error_Msg
2641                  (Project, In_Tree,
2642                   "%% is not a valid unit name.",
2643                   Element.Value.Location);
2644
2645             else
2646                if Current_Verbosity = High then
2647                   Write_Str ("    Unit (""");
2648                   Write_Str (Get_Name_String (Unit_Name));
2649                   Write_Line (""")");
2650                end if;
2651
2652                Element.Index := Unit_Name;
2653                In_Tree.Array_Elements.Table (Current) := Element;
2654             end if;
2655
2656             Current := Element.Next;
2657          end loop;
2658       end Check_Unit_Names;
2659
2660       --------------------
2661       -- Get_Exceptions --
2662       --------------------
2663
2664       procedure Get_Exceptions (Kind : Source_Kind) is
2665          Exceptions     : Array_Element_Id;
2666          Exception_List : Variable_Value;
2667          Element_Id     : String_List_Id;
2668          Element        : String_Element;
2669          File_Name      : File_Name_Type;
2670          Lang_Id        : Language_Index;
2671          Lang           : Name_Id;
2672          Lang_Kind      : Language_Kind;
2673          Source         : Source_Id;
2674
2675       begin
2676          if Kind = Impl then
2677             Exceptions :=
2678               Value_Of
2679                 (Name_Implementation_Exceptions,
2680                  In_Arrays => Naming.Decl.Arrays,
2681                  In_Tree   => In_Tree);
2682
2683          else
2684             Exceptions :=
2685               Value_Of
2686                 (Name_Specification_Exceptions,
2687                  In_Arrays => Naming.Decl.Arrays,
2688                  In_Tree   => In_Tree);
2689          end if;
2690
2691          Lang_Id := Data.First_Language_Processing;
2692          while Lang_Id /= No_Language_Index loop
2693             if In_Tree.Languages_Data.Table (Lang_Id).Config.Kind =
2694                                                                File_Based
2695             then
2696                Lang := In_Tree.Languages_Data.Table (Lang_Id).Name;
2697                Lang_Kind :=
2698                  In_Tree.Languages_Data.Table (Lang_Id).Config.Kind;
2699
2700                Exception_List := Value_Of
2701                  (Index    => Lang,
2702                   In_Array => Exceptions,
2703                   In_Tree  => In_Tree);
2704
2705                if Exception_List /= Nil_Variable_Value then
2706                   Element_Id := Exception_List.Values;
2707                   while Element_Id /= Nil_String loop
2708                      Element := In_Tree.String_Elements.Table (Element_Id);
2709
2710                      if Osint.File_Names_Case_Sensitive then
2711                         File_Name := File_Name_Type (Element.Value);
2712                      else
2713                         Get_Name_String (Element.Value);
2714                         Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
2715                         File_Name := Name_Find;
2716                      end if;
2717
2718                      Source := Data.First_Source;
2719                      while Source /= No_Source
2720                        and then
2721                        In_Tree.Sources.Table (Source).File /= File_Name
2722                      loop
2723                         Source :=
2724                           In_Tree.Sources.Table (Source).Next_In_Project;
2725                      end loop;
2726
2727                      if Source = No_Source then
2728                         Add_Source
2729                           (Id           => Source,
2730                            Data         => Data,
2731                            In_Tree      => In_Tree,
2732                            Project      => Project,
2733                            Lang         => Lang,
2734                            Lang_Id      => Lang_Id,
2735                            Kind         => Kind,
2736                            File_Name    => File_Name,
2737                            Display_File => File_Name_Type (Element.Value),
2738                            Naming_Exception => True,
2739                            Lang_Kind    => Lang_Kind);
2740
2741                      else
2742                         --  Check if the file name is already recorded for
2743                         --  another language or another kind.
2744
2745                         if
2746                           In_Tree.Sources.Table (Source).Language /= Lang_Id
2747                         then
2748                            Error_Msg
2749                              (Project,
2750                               In_Tree,
2751                               "the same file cannot be a source " &
2752                               "of two languages",
2753                               Element.Location);
2754
2755                         elsif In_Tree.Sources.Table (Source).Kind /= Kind then
2756                            Error_Msg
2757                              (Project,
2758                               In_Tree,
2759                               "the same file cannot be a source " &
2760                               "and a template",
2761                               Element.Location);
2762                         end if;
2763
2764                         --  If the file is already recorded for the same
2765                         --  language and the same kind, it means that the file
2766                         --  name appears several times in the *_Exceptions
2767                         --  attribute; so there is nothing to do.
2768
2769                      end if;
2770
2771                      Element_Id := Element.Next;
2772                   end loop;
2773                end if;
2774             end if;
2775
2776             Lang_Id := In_Tree.Languages_Data.Table (Lang_Id).Next;
2777          end loop;
2778       end Get_Exceptions;
2779
2780       -------------------------
2781       -- Get_Unit_Exceptions --
2782       -------------------------
2783
2784       procedure Get_Unit_Exceptions (Kind : Source_Kind) is
2785          Exceptions : Array_Element_Id;
2786          Element    : Array_Element;
2787          Unit       : Name_Id;
2788          Index      : Int;
2789          File_Name  : File_Name_Type;
2790          Lang_Id    : constant Language_Index :=
2791                         Data.Unit_Based_Language_Index;
2792          Lang       : constant Name_Id :=
2793                         Data.Unit_Based_Language_Name;
2794
2795          Source            : Source_Id;
2796          Source_To_Replace : Source_Id := No_Source;
2797
2798          Other_Project : Project_Id;
2799          Other_Part    : Source_Id := No_Source;
2800
2801       begin
2802          if Lang_Id = No_Language_Index or else Lang = No_Name then
2803             return;
2804          end if;
2805
2806          if Kind = Impl then
2807             Exceptions := Value_Of
2808               (Name_Body,
2809                In_Arrays => Naming.Decl.Arrays,
2810                In_Tree   => In_Tree);
2811
2812             if Exceptions = No_Array_Element then
2813                Exceptions :=
2814                  Value_Of
2815                    (Name_Implementation,
2816                     In_Arrays => Naming.Decl.Arrays,
2817                     In_Tree   => In_Tree);
2818             end if;
2819
2820          else
2821             Exceptions :=
2822               Value_Of
2823                 (Name_Spec,
2824                  In_Arrays => Naming.Decl.Arrays,
2825                  In_Tree   => In_Tree);
2826
2827             if Exceptions = No_Array_Element then
2828                Exceptions := Value_Of
2829                  (Name_Specification,
2830                   In_Arrays => Naming.Decl.Arrays,
2831                   In_Tree   => In_Tree);
2832             end if;
2833
2834          end if;
2835
2836          while Exceptions /= No_Array_Element loop
2837             Element := In_Tree.Array_Elements.Table (Exceptions);
2838
2839             if Osint.File_Names_Case_Sensitive then
2840                File_Name := File_Name_Type (Element.Value.Value);
2841             else
2842                Get_Name_String (Element.Value.Value);
2843                Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
2844                File_Name := Name_Find;
2845             end if;
2846
2847             Get_Name_String (Element.Index);
2848             To_Lower (Name_Buffer (1 .. Name_Len));
2849             Unit := Name_Find;
2850
2851             Index := Element.Value.Index;
2852
2853             --  For Ada, check if it is a valid unit name
2854
2855             if Lang = Name_Ada then
2856                Get_Name_String (Element.Index);
2857                Check_Ada_Name (Name_Buffer (1 .. Name_Len), Unit);
2858
2859                if Unit = No_Name then
2860                   Err_Vars.Error_Msg_Name_1 := Element.Index;
2861                   Error_Msg
2862                     (Project, In_Tree,
2863                      "%% is not a valid unit name.",
2864                      Element.Value.Location);
2865                end if;
2866             end if;
2867
2868             if Unit /= No_Name then
2869
2870                --  Check if the source already exists
2871
2872                Source := In_Tree.First_Source;
2873                Source_To_Replace := No_Source;
2874
2875                while Source /= No_Source and then
2876                  (In_Tree.Sources.Table (Source).Unit /= Unit or else
2877                   In_Tree.Sources.Table (Source).Index /= Index)
2878                loop
2879                   Source := In_Tree.Sources.Table (Source).Next_In_Sources;
2880                end loop;
2881
2882                if Source /= No_Source then
2883                   if In_Tree.Sources.Table (Source).Kind /= Kind then
2884                      Other_Part := Source;
2885
2886                      loop
2887                         Source :=
2888                           In_Tree.Sources.Table (Source).Next_In_Sources;
2889
2890                         exit when Source = No_Source or else
2891                           (In_Tree.Sources.Table (Source).Unit = Unit
2892                            and then
2893                            In_Tree.Sources.Table (Source).Index = Index);
2894                      end loop;
2895                   end if;
2896
2897                   if Source /= No_Source then
2898                      Other_Project := In_Tree.Sources.Table (Source).Project;
2899
2900                      if Is_Extending (Project, Other_Project, In_Tree) then
2901                         Other_Part :=
2902                           In_Tree.Sources.Table (Source).Other_Part;
2903
2904                         --  Record the source to be removed
2905
2906                         Source_To_Replace := Source;
2907                         Source := No_Source;
2908
2909                      else
2910                         Error_Msg_Name_1 := Unit;
2911                         Error_Msg_Name_2 :=
2912                           In_Tree.Projects.Table (Other_Project).Name;
2913                         Error_Msg
2914                           (Project,
2915                            In_Tree,
2916                            "%% is already a source of project %%",
2917                            Element.Value.Location);
2918                      end if;
2919                   end if;
2920                end if;
2921
2922                if Source = No_Source then
2923                   Add_Source
2924                     (Id           => Source,
2925                      Data         => Data,
2926                      In_Tree      => In_Tree,
2927                      Project      => Project,
2928                      Lang         => Lang,
2929                      Lang_Id      => Lang_Id,
2930                      Kind         => Kind,
2931                      File_Name    => File_Name,
2932                      Display_File => File_Name_Type (Element.Value.Value),
2933                      Lang_Kind    => Unit_Based,
2934                      Other_Part   => Other_Part,
2935                      Unit         => Unit,
2936                      Index        => Index,
2937                      Naming_Exception => True,
2938                      Source_To_Replace => Source_To_Replace);
2939                end if;
2940             end if;
2941
2942             Exceptions := Element.Next;
2943          end loop;
2944
2945       end Get_Unit_Exceptions;
2946
2947    --  Start of processing for Check_Naming_Schemes
2948
2949    begin
2950       if Get_Mode = Ada_Only then
2951
2952          --  If there is a package Naming, we will put in Data.Naming what is
2953          --  in this package Naming.
2954
2955          if Naming_Id /= No_Package then
2956             Naming := In_Tree.Packages.Table (Naming_Id);
2957
2958             if Current_Verbosity = High then
2959                Write_Line ("Checking ""Naming"" for Ada.");
2960             end if;
2961
2962             declare
2963                Bodies : constant Array_Element_Id :=
2964                           Util.Value_Of
2965                             (Name_Body, Naming.Decl.Arrays, In_Tree);
2966
2967                Specs  : constant Array_Element_Id :=
2968                           Util.Value_Of
2969                             (Name_Spec, Naming.Decl.Arrays, In_Tree);
2970
2971             begin
2972                if Bodies /= No_Array_Element then
2973
2974                   --  We have elements in the array Body_Part
2975
2976                   if Current_Verbosity = High then
2977                      Write_Line ("Found Bodies.");
2978                   end if;
2979
2980                   Data.Naming.Bodies := Bodies;
2981                   Check_Unit_Names (Bodies);
2982
2983                else
2984                   if Current_Verbosity = High then
2985                      Write_Line ("No Bodies.");
2986                   end if;
2987                end if;
2988
2989                if Specs /= No_Array_Element then
2990
2991                   --  We have elements in the array Specs
2992
2993                   if Current_Verbosity = High then
2994                      Write_Line ("Found Specs.");
2995                   end if;
2996
2997                   Data.Naming.Specs := Specs;
2998                   Check_Unit_Names (Specs);
2999
3000                else
3001                   if Current_Verbosity = High then
3002                      Write_Line ("No Specs.");
3003                   end if;
3004                end if;
3005             end;
3006
3007             --  We are now checking if variables Dot_Replacement, Casing,
3008             --  Spec_Suffix, Body_Suffix and/or Separate_Suffix exist.
3009
3010             --  For each variable, if it does not exist, we do nothing,
3011             --  because we already have the default.
3012
3013             --  Check Dot_Replacement
3014
3015             declare
3016                Dot_Replacement : constant Variable_Value :=
3017                                    Util.Value_Of
3018                                      (Name_Dot_Replacement,
3019                                       Naming.Decl.Attributes, In_Tree);
3020
3021             begin
3022                pragma Assert (Dot_Replacement.Kind = Single,
3023                               "Dot_Replacement is not a single string");
3024
3025                if not Dot_Replacement.Default then
3026                   Get_Name_String (Dot_Replacement.Value);
3027
3028                   if Name_Len = 0 then
3029                      Error_Msg
3030                        (Project, In_Tree,
3031                         "Dot_Replacement cannot be empty",
3032                         Dot_Replacement.Location);
3033
3034                   else
3035                      if Osint.File_Names_Case_Sensitive then
3036                         Data.Naming.Dot_Replacement :=
3037                           File_Name_Type (Dot_Replacement.Value);
3038                      else
3039                         Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
3040                         Data.Naming.Dot_Replacement := Name_Find;
3041                      end if;
3042                      Data.Naming.Dot_Repl_Loc := Dot_Replacement.Location;
3043                   end if;
3044                end if;
3045             end;
3046
3047             if Current_Verbosity = High then
3048                Write_Str  ("  Dot_Replacement = """);
3049                Write_Str  (Get_Name_String (Data.Naming.Dot_Replacement));
3050                Write_Char ('"');
3051                Write_Eol;
3052             end if;
3053
3054             --  Check Casing
3055
3056             declare
3057                Casing_String : constant Variable_Value :=
3058                                  Util.Value_Of
3059                                    (Name_Casing,
3060                                     Naming.Decl.Attributes,
3061                                     In_Tree);
3062
3063             begin
3064                pragma Assert (Casing_String.Kind = Single,
3065                               "Casing is not a single string");
3066
3067                if not Casing_String.Default then
3068                   declare
3069                      Casing_Image : constant String :=
3070                                       Get_Name_String (Casing_String.Value);
3071                   begin
3072                      declare
3073                         Casing_Value : constant Casing_Type :=
3074                                          Value (Casing_Image);
3075                      begin
3076                         Data.Naming.Casing := Casing_Value;
3077                      end;
3078
3079                   exception
3080                      when Constraint_Error =>
3081                         if Casing_Image'Length = 0 then
3082                            Error_Msg
3083                              (Project, In_Tree,
3084                               "Casing cannot be an empty string",
3085                               Casing_String.Location);
3086
3087                         else
3088                            Name_Len := Casing_Image'Length;
3089                            Name_Buffer (1 .. Name_Len) := Casing_Image;
3090                            Err_Vars.Error_Msg_Name_1 := Name_Find;
3091                            Error_Msg
3092                              (Project, In_Tree,
3093                               "%% is not a correct Casing",
3094                               Casing_String.Location);
3095                         end if;
3096                   end;
3097                end if;
3098             end;
3099
3100             if Current_Verbosity = High then
3101                Write_Str  ("  Casing = ");
3102                Write_Str  (Image (Data.Naming.Casing));
3103                Write_Char ('.');
3104                Write_Eol;
3105             end if;
3106
3107             --  Check Spec_Suffix
3108
3109             declare
3110                Ada_Spec_Suffix : constant Variable_Value :=
3111                                    Prj.Util.Value_Of
3112                                      (Index     => Name_Ada,
3113                                       Src_Index => 0,
3114                                       In_Array  => Data.Naming.Spec_Suffix,
3115                                       In_Tree   => In_Tree);
3116
3117             begin
3118                if Ada_Spec_Suffix.Kind = Single
3119                  and then Get_Name_String (Ada_Spec_Suffix.Value) /= ""
3120                then
3121                   Get_Name_String (Ada_Spec_Suffix.Value);
3122                   Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
3123                   Set_Spec_Suffix (In_Tree, "ada", Data.Naming, Name_Find);
3124                   Data.Naming.Ada_Spec_Suffix_Loc := Ada_Spec_Suffix.Location;
3125
3126                else
3127                   Set_Spec_Suffix
3128                     (In_Tree,
3129                      "ada",
3130                      Data.Naming,
3131                      Default_Ada_Spec_Suffix);
3132                end if;
3133             end;
3134
3135             if Current_Verbosity = High then
3136                Write_Str  ("  Spec_Suffix = """);
3137                Write_Str  (Spec_Suffix_Of (In_Tree, "ada", Data.Naming));
3138                Write_Char ('"');
3139                Write_Eol;
3140             end if;
3141
3142             --  Check Body_Suffix
3143
3144             declare
3145                Ada_Body_Suffix : constant Variable_Value :=
3146                                    Prj.Util.Value_Of
3147                                      (Index     => Name_Ada,
3148                                       Src_Index => 0,
3149                                       In_Array  => Data.Naming.Body_Suffix,
3150                                       In_Tree   => In_Tree);
3151
3152             begin
3153                if Ada_Body_Suffix.Kind = Single
3154                  and then Get_Name_String (Ada_Body_Suffix.Value) /= ""
3155                then
3156                   Get_Name_String (Ada_Body_Suffix.Value);
3157                   Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
3158                   Set_Body_Suffix (In_Tree, "ada", Data.Naming, Name_Find);
3159                   Data.Naming.Ada_Body_Suffix_Loc := Ada_Body_Suffix.Location;
3160
3161                else
3162                   Set_Body_Suffix
3163                     (In_Tree,
3164                      "ada",
3165                      Data.Naming,
3166                      Default_Ada_Body_Suffix);
3167                end if;
3168             end;
3169
3170             if Current_Verbosity = High then
3171                Write_Str  ("  Body_Suffix = """);
3172                Write_Str  (Body_Suffix_Of (In_Tree, "ada", Data.Naming));
3173                Write_Char ('"');
3174                Write_Eol;
3175             end if;
3176
3177             --  Check Separate_Suffix
3178
3179             declare
3180                Ada_Sep_Suffix : constant Variable_Value :=
3181                                   Prj.Util.Value_Of
3182                                     (Variable_Name => Name_Separate_Suffix,
3183                                      In_Variables  => Naming.Decl.Attributes,
3184                                      In_Tree       => In_Tree);
3185
3186             begin
3187                if Ada_Sep_Suffix.Default then
3188                   Data.Naming.Separate_Suffix :=
3189                     Body_Suffix_Id_Of (In_Tree, Name_Ada, Data.Naming);
3190
3191                else
3192                   Get_Name_String (Ada_Sep_Suffix.Value);
3193
3194                   if Name_Len = 0 then
3195                      Error_Msg
3196                        (Project, In_Tree,
3197                         "Separate_Suffix cannot be empty",
3198                         Ada_Sep_Suffix.Location);
3199
3200                   else
3201                      Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
3202                      Data.Naming.Separate_Suffix := Name_Find;
3203                      Data.Naming.Sep_Suffix_Loc  := Ada_Sep_Suffix.Location;
3204                   end if;
3205                end if;
3206             end;
3207
3208             if Current_Verbosity = High then
3209                Write_Str  ("  Separate_Suffix = """);
3210                Write_Str  (Get_Name_String (Data.Naming.Separate_Suffix));
3211                Write_Char ('"');
3212                Write_Eol;
3213             end if;
3214
3215             --  Check if Data.Naming is valid
3216
3217             Check_Ada_Naming_Scheme_Validity (Project, In_Tree, Data.Naming);
3218          end if;
3219
3220       elsif not In_Configuration then
3221
3222          --  Look into package Naming, if there is one
3223
3224          if Naming_Id /= No_Package then
3225             Naming := In_Tree.Packages.Table (Naming_Id);
3226
3227             if Current_Verbosity = High then
3228                Write_Line ("Checking package Naming.");
3229             end if;
3230
3231             --  We are now checking if attribute Dot_Replacement, Casing,
3232             --  and/or Separate_Suffix exist.
3233
3234             --  For each attribute, if it does not exist, we do nothing,
3235             --  because we already have the default.
3236             --  Otherwise, for all unit-based languages, we put the declared
3237             --  value in the language config.
3238
3239             declare
3240                Dot_Repl        : constant  Variable_Value :=
3241                                    Util.Value_Of
3242                                      (Name_Dot_Replacement,
3243                                       Naming.Decl.Attributes, In_Tree);
3244                Dot_Replacement : File_Name_Type := No_File;
3245
3246                Casing_String : constant Variable_Value :=
3247                                  Util.Value_Of
3248                                    (Name_Casing,
3249                                     Naming.Decl.Attributes,
3250                                     In_Tree);
3251                Casing          : Casing_Type;
3252                Casing_Defined  : Boolean := False;
3253
3254                Sep_Suffix : constant Variable_Value :=
3255                               Prj.Util.Value_Of
3256                                 (Variable_Name => Name_Separate_Suffix,
3257                                  In_Variables  => Naming.Decl.Attributes,
3258                                  In_Tree       => In_Tree);
3259                Separate_Suffix : File_Name_Type := No_File;
3260
3261                Lang_Id : Language_Index;
3262             begin
3263                --  Check attribute Dot_Replacement
3264
3265                if not Dot_Repl.Default then
3266                   Get_Name_String (Dot_Repl.Value);
3267
3268                   if Name_Len = 0 then
3269                      Error_Msg
3270                        (Project, In_Tree,
3271                         "Dot_Replacement cannot be empty",
3272                         Dot_Repl.Location);
3273
3274                   else
3275                      Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
3276                      Dot_Replacement := Name_Find;
3277
3278                      if Current_Verbosity = High then
3279                         Write_Str  ("  Dot_Replacement = """);
3280                         Write_Str  (Get_Name_String (Dot_Replacement));
3281                         Write_Char ('"');
3282                         Write_Eol;
3283                      end if;
3284                   end if;
3285                end if;
3286
3287                --  Check attribute Casing
3288
3289                if not Casing_String.Default then
3290                   declare
3291                      Casing_Image : constant String :=
3292                                       Get_Name_String (Casing_String.Value);
3293                   begin
3294                      declare
3295                         Casing_Value : constant Casing_Type :=
3296                                          Value (Casing_Image);
3297                      begin
3298                         Casing := Casing_Value;
3299                         Casing_Defined := True;
3300
3301                         if Current_Verbosity = High then
3302                            Write_Str  ("  Casing = ");
3303                            Write_Str  (Image (Casing));
3304                            Write_Char ('.');
3305                            Write_Eol;
3306                         end if;
3307                      end;
3308
3309                   exception
3310                      when Constraint_Error =>
3311                         if Casing_Image'Length = 0 then
3312                            Error_Msg
3313                              (Project, In_Tree,
3314                               "Casing cannot be an empty string",
3315                               Casing_String.Location);
3316
3317                         else
3318                            Name_Len := Casing_Image'Length;
3319                            Name_Buffer (1 .. Name_Len) := Casing_Image;
3320                            Err_Vars.Error_Msg_Name_1 := Name_Find;
3321                            Error_Msg
3322                              (Project, In_Tree,
3323                               "%% is not a correct Casing",
3324                               Casing_String.Location);
3325                         end if;
3326                   end;
3327                end if;
3328
3329                if not Sep_Suffix.Default then
3330                   Get_Name_String (Sep_Suffix.Value);
3331
3332                   if Name_Len = 0 then
3333                      Error_Msg
3334                        (Project, In_Tree,
3335                         "Separate_Suffix cannot be empty",
3336                         Sep_Suffix.Location);
3337
3338                   else
3339                      Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
3340                      Separate_Suffix := Name_Find;
3341
3342                      if Current_Verbosity = High then
3343                         Write_Str ("  Separate_Suffix = """);
3344                         Write_Str (Get_Name_String (Separate_Suffix));
3345                         Write_Char ('"');
3346                         Write_Eol;
3347                      end if;
3348                   end if;
3349                end if;
3350
3351                --  For all unit based languages, if any, set the specified
3352                --  value of Dot_Replacement, Casing and/or Separate_Suffix.
3353
3354                if Dot_Replacement /= No_File
3355                  or else Casing_Defined
3356                  or else Separate_Suffix /= No_File
3357                then
3358                   Lang_Id := Data.First_Language_Processing;
3359                   while Lang_Id /= No_Language_Index loop
3360                      if In_Tree.Languages_Data.Table
3361                        (Lang_Id).Config.Kind = Unit_Based
3362                      then
3363                         if Dot_Replacement /= No_File then
3364                            In_Tree.Languages_Data.Table
3365                              (Lang_Id).Config.Naming_Data.Dot_Replacement :=
3366                              Dot_Replacement;
3367                         end if;
3368
3369                         if Casing_Defined then
3370                            In_Tree.Languages_Data.Table
3371                              (Lang_Id).Config.Naming_Data.Casing := Casing;
3372                         end if;
3373
3374                         if Separate_Suffix /= No_File then
3375                            In_Tree.Languages_Data.Table
3376                              (Lang_Id).Config.Naming_Data.Separate_Suffix :=
3377                                Separate_Suffix;
3378                         end if;
3379                      end if;
3380
3381                      Lang_Id :=
3382                        In_Tree.Languages_Data.Table (Lang_Id).Next;
3383                   end loop;
3384                end if;
3385             end;
3386
3387             --  Next, get the spec and body suffixes
3388
3389             declare
3390                Suffix  : Variable_Value;
3391                Lang_Id : Language_Index;
3392                Lang    : Name_Id;
3393
3394             begin
3395                Lang_Id := Data.First_Language_Processing;
3396                while Lang_Id /= No_Language_Index loop
3397                   Lang := In_Tree.Languages_Data.Table (Lang_Id).Name;
3398
3399                   --  Spec_Suffix
3400
3401                   Suffix := Value_Of
3402                     (Name                    => Lang,
3403                      Attribute_Or_Array_Name => Name_Spec_Suffix,
3404                      In_Package              => Naming_Id,
3405                      In_Tree                 => In_Tree);
3406
3407                   if Suffix = Nil_Variable_Value then
3408                      Suffix := Value_Of
3409                        (Name                    => Lang,
3410                         Attribute_Or_Array_Name => Name_Specification_Suffix,
3411                         In_Package              => Naming_Id,
3412                         In_Tree                 => In_Tree);
3413                   end if;
3414
3415                   if Suffix /= Nil_Variable_Value then
3416                      In_Tree.Languages_Data.Table (Lang_Id).
3417                        Config.Naming_Data.Spec_Suffix :=
3418                          File_Name_Type (Suffix.Value);
3419                   end if;
3420
3421                   --  Body_Suffix
3422
3423                   Suffix := Value_Of
3424                     (Name                    => Lang,
3425                      Attribute_Or_Array_Name => Name_Body_Suffix,
3426                      In_Package              => Naming_Id,
3427                      In_Tree                 => In_Tree);
3428
3429                   if Suffix = Nil_Variable_Value then
3430                      Suffix := Value_Of
3431                        (Name                    => Lang,
3432                         Attribute_Or_Array_Name => Name_Implementation_Suffix,
3433                         In_Package              => Naming_Id,
3434                         In_Tree                 => In_Tree);
3435                   end if;
3436
3437                   if Suffix /= Nil_Variable_Value then
3438                      In_Tree.Languages_Data.Table (Lang_Id).
3439                        Config.Naming_Data.Body_Suffix :=
3440                          File_Name_Type (Suffix.Value);
3441                   end if;
3442
3443                   Lang_Id := In_Tree.Languages_Data.Table (Lang_Id).Next;
3444                end loop;
3445             end;
3446
3447             --  Get the exceptions for file based languages
3448
3449             Get_Exceptions (Spec);
3450             Get_Exceptions (Impl);
3451
3452             --  Get the exceptions for unit based languages
3453
3454             Get_Unit_Exceptions (Spec);
3455             Get_Unit_Exceptions (Impl);
3456
3457          end if;
3458       end if;
3459    end Check_Naming_Schemes;
3460
3461    ------------------------------
3462    -- Check_Library_Attributes --
3463    ------------------------------
3464
3465    procedure Check_Library_Attributes
3466      (Project : Project_Id;
3467       In_Tree : Project_Tree_Ref;
3468       Current_Dir : String;
3469       Data    : in out Project_Data)
3470    is
3471       Attributes   : constant Prj.Variable_Id := Data.Decl.Attributes;
3472
3473       Lib_Dir      : constant Prj.Variable_Value :=
3474                        Prj.Util.Value_Of
3475                          (Snames.Name_Library_Dir, Attributes, In_Tree);
3476
3477       Lib_Name     : constant Prj.Variable_Value :=
3478                        Prj.Util.Value_Of
3479                          (Snames.Name_Library_Name, Attributes, In_Tree);
3480
3481       Lib_Version  : constant Prj.Variable_Value :=
3482                        Prj.Util.Value_Of
3483                          (Snames.Name_Library_Version, Attributes, In_Tree);
3484
3485       Lib_ALI_Dir  : constant Prj.Variable_Value :=
3486                        Prj.Util.Value_Of
3487                          (Snames.Name_Library_Ali_Dir, Attributes, In_Tree);
3488
3489       The_Lib_Kind : constant Prj.Variable_Value :=
3490                        Prj.Util.Value_Of
3491                          (Snames.Name_Library_Kind, Attributes, In_Tree);
3492
3493       Imported_Project_List : Project_List := Empty_Project_List;
3494
3495       Continuation : String_Access := No_Continuation_String'Access;
3496
3497       Support_For_Libraries : Library_Support;
3498
3499       Library_Directory_Present : Boolean;
3500
3501       procedure Check_Library (Proj : Project_Id; Extends : Boolean);
3502       --  Check if an imported or extended project if also a library project
3503
3504       -------------------
3505       -- Check_Library --
3506       -------------------
3507
3508       procedure Check_Library (Proj : Project_Id; Extends : Boolean) is
3509          Proj_Data : Project_Data;
3510          Src_Id    : Source_Id;
3511          Src       : Source_Data;
3512
3513       begin
3514          if Proj /= No_Project then
3515             Proj_Data := In_Tree.Projects.Table (Proj);
3516
3517             if not Proj_Data.Library then
3518
3519                --  The only not library projects that are OK are those that
3520                --  have no sources. However, header files from non-Ada
3521                --  languages are OK, as there is nothing to compile.
3522
3523                Src_Id := Proj_Data.First_Source;
3524                while Src_Id /= No_Source loop
3525                   Src := In_Tree.Sources.Table (Src_Id);
3526
3527                   exit when Src.Lang_Kind /= File_Based
3528                     or else Src.Kind /= Spec;
3529
3530                   Src_Id := Src.Next_In_Project;
3531                end loop;
3532
3533                if Src_Id /= No_Source then
3534                   Error_Msg_Name_1 := Data.Name;
3535                   Error_Msg_Name_2 := Proj_Data.Name;
3536
3537                   if Extends then
3538                      if Data.Library_Kind /= Static then
3539                         Error_Msg
3540                           (Project, In_Tree,
3541                            Continuation.all &
3542                            "shared library project %% cannot extend " &
3543                            "project %% that is not a library project",
3544                            Data.Location);
3545                         Continuation := Continuation_String'Access;
3546                      end if;
3547
3548                   elsif Data.Library_Kind /= Static then
3549                      Error_Msg
3550                        (Project, In_Tree,
3551                         Continuation.all &
3552                         "shared library project %% cannot import project %% " &
3553                         "that is not a shared library project",
3554                         Data.Location);
3555                      Continuation := Continuation_String'Access;
3556                   end if;
3557                end if;
3558
3559             elsif Data.Library_Kind /= Static and then
3560                   Proj_Data.Library_Kind = Static
3561             then
3562                Error_Msg_Name_1 := Data.Name;
3563                Error_Msg_Name_2 := Proj_Data.Name;
3564
3565                if Extends then
3566                   Error_Msg
3567                     (Project, In_Tree,
3568                      Continuation.all &
3569                      "shared library project %% cannot extend static " &
3570                      "library project %%",
3571                      Data.Location);
3572
3573                else
3574                   Error_Msg
3575                     (Project, In_Tree,
3576                      Continuation.all &
3577                      "shared library project %% cannot import static " &
3578                      "library project %%",
3579                      Data.Location);
3580                end if;
3581
3582                Continuation := Continuation_String'Access;
3583             end if;
3584          end if;
3585       end Check_Library;
3586
3587    --  Start of processing for Check_Library_Attributes
3588
3589    begin
3590       Library_Directory_Present := Lib_Dir.Value /= Empty_String;
3591
3592       --  Special case of extending project
3593
3594       if Data.Extends /= No_Project then
3595          declare
3596             Extended_Data : constant Project_Data :=
3597                               In_Tree.Projects.Table (Data.Extends);
3598
3599          begin
3600             --  If the project extended is a library project, we inherit the
3601             --  library name, if it is not redefined; we check that the library
3602             --  directory is specified.
3603
3604             if Extended_Data.Library then
3605                if Data.Qualifier = Standard then
3606                   Error_Msg
3607                     (Project, In_Tree,
3608                      "a standard project cannot extend a library project",
3609                      Data.Location);
3610
3611                else
3612                   if Lib_Name.Default then
3613                      Data.Library_Name := Extended_Data.Library_Name;
3614                   end if;
3615
3616                   if Lib_Dir.Default then
3617                      if not Data.Virtual then
3618                         Error_Msg
3619                           (Project, In_Tree,
3620                            "a project extending a library project must " &
3621                            "specify an attribute Library_Dir",
3622                            Data.Location);
3623
3624                      else
3625                         --  For a virtual project extending a library project,
3626                         --  inherit library directory.
3627
3628                         Data.Library_Dir := Extended_Data.Library_Dir;
3629                         Library_Directory_Present := True;
3630                      end if;
3631                   end if;
3632                end if;
3633             end if;
3634          end;
3635       end if;
3636
3637       pragma Assert (Lib_Name.Kind = Single);
3638
3639       if Lib_Name.Value = Empty_String then
3640          if Current_Verbosity = High
3641            and then Data.Library_Name = No_Name
3642          then
3643             Write_Line ("No library name");
3644          end if;
3645
3646       else
3647          --  There is no restriction on the syntax of library names
3648
3649          Data.Library_Name := Lib_Name.Value;
3650       end if;
3651
3652       if Data.Library_Name /= No_Name then
3653          if Current_Verbosity = High then
3654             Write_Str ("Library name = """);
3655             Write_Str (Get_Name_String (Data.Library_Name));
3656             Write_Line ("""");
3657          end if;
3658
3659          pragma Assert (Lib_Dir.Kind = Single);
3660
3661          if not Library_Directory_Present then
3662             if Current_Verbosity = High then
3663                Write_Line ("No library directory");
3664             end if;
3665
3666          else
3667             --  Find path name (unless inherited), check that it is a directory
3668
3669             if Data.Library_Dir = No_Path_Information then
3670                Locate_Directory
3671                  (Project,
3672                   In_Tree,
3673                   File_Name_Type (Lib_Dir.Value),
3674                   Data.Directory.Display_Name,
3675                   Data.Library_Dir.Name,
3676                   Data.Library_Dir.Display_Name,
3677                   Create      => "library",
3678                   Current_Dir => Current_Dir,
3679                   Location    => Lib_Dir.Location);
3680             end if;
3681
3682             if Data.Library_Dir = No_Path_Information then
3683
3684                --  Get the absolute name of the library directory that
3685                --  does not exist, to report an error.
3686
3687                declare
3688                   Dir_Name : constant String :=
3689                                Get_Name_String (Lib_Dir.Value);
3690
3691                begin
3692                   if Is_Absolute_Path (Dir_Name) then
3693                      Err_Vars.Error_Msg_File_1 :=
3694                        File_Name_Type (Lib_Dir.Value);
3695
3696                   else
3697                      Get_Name_String (Data.Directory.Display_Name);
3698
3699                      if Name_Buffer (Name_Len) /= Directory_Separator then
3700                         Name_Len := Name_Len + 1;
3701                         Name_Buffer (Name_Len) := Directory_Separator;
3702                      end if;
3703
3704                      Name_Buffer
3705                        (Name_Len + 1 .. Name_Len + Dir_Name'Length) :=
3706                        Dir_Name;
3707                      Name_Len := Name_Len + Dir_Name'Length;
3708                      Err_Vars.Error_Msg_File_1 := Name_Find;
3709                   end if;
3710
3711                   --  Report the error
3712
3713                   Error_Msg
3714                     (Project, In_Tree,
3715                      "library directory { does not exist",
3716                      Lib_Dir.Location);
3717                end;
3718
3719                --  The library directory cannot be the same as the Object
3720                --  directory.
3721
3722             elsif Data.Library_Dir.Name = Data.Object_Directory.Name then
3723                Error_Msg
3724                  (Project, In_Tree,
3725                   "library directory cannot be the same " &
3726                   "as object directory",
3727                   Lib_Dir.Location);
3728                Data.Library_Dir := No_Path_Information;
3729
3730             else
3731                declare
3732                   OK       : Boolean := True;
3733                   Dirs_Id  : String_List_Id;
3734                   Dir_Elem : String_Element;
3735
3736                begin
3737                   --  The library directory cannot be the same as a source
3738                   --  directory of the current project.
3739
3740                   Dirs_Id := Data.Source_Dirs;
3741                   while Dirs_Id /= Nil_String loop
3742                      Dir_Elem := In_Tree.String_Elements.Table (Dirs_Id);
3743                      Dirs_Id  := Dir_Elem.Next;
3744
3745                      if
3746                        Data.Library_Dir.Name = Path_Name_Type (Dir_Elem.Value)
3747                      then
3748                         Err_Vars.Error_Msg_File_1 :=
3749                           File_Name_Type (Dir_Elem.Value);
3750                         Error_Msg
3751                           (Project, In_Tree,
3752                            "library directory cannot be the same " &
3753                            "as source directory {",
3754                            Lib_Dir.Location);
3755                         OK := False;
3756                         exit;
3757                      end if;
3758                   end loop;
3759
3760                   if OK then
3761
3762                      --  The library directory cannot be the same as a source
3763                      --  directory of another project either.
3764
3765                      Project_Loop :
3766                      for Pid in 1 .. Project_Table.Last (In_Tree.Projects) loop
3767                         if Pid /= Project then
3768                            Dirs_Id := In_Tree.Projects.Table (Pid).Source_Dirs;
3769
3770                            Dir_Loop : while Dirs_Id /= Nil_String loop
3771                               Dir_Elem :=
3772                                 In_Tree.String_Elements.Table (Dirs_Id);
3773                               Dirs_Id  := Dir_Elem.Next;
3774
3775                               if Data.Library_Dir.Name =
3776                                 Path_Name_Type (Dir_Elem.Value)
3777                               then
3778                                  Err_Vars.Error_Msg_File_1 :=
3779                                    File_Name_Type (Dir_Elem.Value);
3780                                  Err_Vars.Error_Msg_Name_1 :=
3781                                    In_Tree.Projects.Table (Pid).Name;
3782
3783                                  Error_Msg
3784                                    (Project, In_Tree,
3785                                     "library directory cannot be the same " &
3786                                     "as source directory { of project %%",
3787                                     Lib_Dir.Location);
3788                                  OK := False;
3789                                  exit Project_Loop;
3790                               end if;
3791                            end loop Dir_Loop;
3792                         end if;
3793                      end loop Project_Loop;
3794                   end if;
3795
3796                   if not OK then
3797                      Data.Library_Dir := No_Path_Information;
3798
3799                   elsif Current_Verbosity = High then
3800
3801                      --  Display the Library directory in high verbosity
3802
3803                      Write_Str ("Library directory =""");
3804                      Write_Str
3805                        (Get_Name_String (Data.Library_Dir.Display_Name));
3806                      Write_Line ("""");
3807                   end if;
3808                end;
3809             end if;
3810          end if;
3811
3812       end if;
3813
3814       Data.Library :=
3815         Data.Library_Dir /= No_Path_Information
3816         and then
3817       Data.Library_Name /= No_Name;
3818
3819       if Data.Extends = No_Project then
3820          case Data.Qualifier is
3821             when Standard =>
3822                if Data.Library then
3823                   Error_Msg
3824                     (Project, In_Tree,
3825                      "a standard project cannot be a library project",
3826                      Lib_Name.Location);
3827                end if;
3828
3829             when Library =>
3830                if not Data.Library then
3831                   Error_Msg
3832                     (Project, In_Tree,
3833                      "not a library project",
3834                      Data.Location);
3835                end if;
3836
3837             when others =>
3838                null;
3839
3840          end case;
3841       end if;
3842
3843       if Data.Library then
3844          if Get_Mode = Multi_Language then
3845             Support_For_Libraries := Data.Config.Lib_Support;
3846
3847          else
3848             Support_For_Libraries := MLib.Tgt.Support_For_Libraries;
3849          end if;
3850
3851          if Support_For_Libraries = Prj.None then
3852             Error_Msg
3853               (Project, In_Tree,
3854                "?libraries are not supported on this platform",
3855                Lib_Name.Location);
3856             Data.Library := False;
3857
3858          else
3859             if Lib_ALI_Dir.Value = Empty_String then
3860                if Current_Verbosity = High then
3861                   Write_Line ("No library ALI directory specified");
3862                end if;
3863                Data.Library_ALI_Dir := Data.Library_Dir;
3864
3865             else
3866                --  Find path name, check that it is a directory
3867
3868                Locate_Directory
3869                  (Project,
3870                   In_Tree,
3871                   File_Name_Type (Lib_ALI_Dir.Value),
3872                   Data.Directory.Display_Name,
3873                   Data.Library_ALI_Dir.Name,
3874                   Data.Library_ALI_Dir.Display_Name,
3875                   Create   => "library ALI",
3876                   Current_Dir => Current_Dir,
3877                   Location => Lib_ALI_Dir.Location);
3878
3879                if Data.Library_ALI_Dir = No_Path_Information then
3880
3881                   --  Get the absolute name of the library ALI directory that
3882                   --  does not exist, to report an error.
3883
3884                   declare
3885                      Dir_Name : constant String :=
3886                                   Get_Name_String (Lib_ALI_Dir.Value);
3887
3888                   begin
3889                      if Is_Absolute_Path (Dir_Name) then
3890                         Err_Vars.Error_Msg_File_1 :=
3891                           File_Name_Type (Lib_Dir.Value);
3892
3893                      else
3894                         Get_Name_String (Data.Directory.Display_Name);
3895
3896                         if Name_Buffer (Name_Len) /= Directory_Separator then
3897                            Name_Len := Name_Len + 1;
3898                            Name_Buffer (Name_Len) := Directory_Separator;
3899                         end if;
3900
3901                         Name_Buffer
3902                           (Name_Len + 1 .. Name_Len + Dir_Name'Length) :=
3903                           Dir_Name;
3904                         Name_Len := Name_Len + Dir_Name'Length;
3905                         Err_Vars.Error_Msg_File_1 := Name_Find;
3906                      end if;
3907
3908                      --  Report the error
3909
3910                      Error_Msg
3911                        (Project, In_Tree,
3912                         "library 'A'L'I directory { does not exist",
3913                         Lib_ALI_Dir.Location);
3914                   end;
3915                end if;
3916
3917                if Data.Library_ALI_Dir /= Data.Library_Dir then
3918
3919                   --  The library ALI directory cannot be the same as the
3920                   --  Object directory.
3921
3922                   if Data.Library_ALI_Dir = Data.Object_Directory then
3923                      Error_Msg
3924                        (Project, In_Tree,
3925                         "library 'A'L'I directory cannot be the same " &
3926                         "as object directory",
3927                         Lib_ALI_Dir.Location);
3928                      Data.Library_ALI_Dir := No_Path_Information;
3929
3930                   else
3931                      declare
3932                         OK       : Boolean := True;
3933                         Dirs_Id  : String_List_Id;
3934                         Dir_Elem : String_Element;
3935
3936                      begin
3937                         --  The library ALI directory cannot be the same as
3938                         --  a source directory of the current project.
3939
3940                         Dirs_Id := Data.Source_Dirs;
3941                         while Dirs_Id /= Nil_String loop
3942                            Dir_Elem := In_Tree.String_Elements.Table (Dirs_Id);
3943                            Dirs_Id  := Dir_Elem.Next;
3944
3945                            if Data.Library_ALI_Dir.Name =
3946                              Path_Name_Type (Dir_Elem.Value)
3947                            then
3948                               Err_Vars.Error_Msg_File_1 :=
3949                                 File_Name_Type (Dir_Elem.Value);
3950                               Error_Msg
3951                                 (Project, In_Tree,
3952                                  "library 'A'L'I directory cannot be " &
3953                                  "the same as source directory {",
3954                                  Lib_ALI_Dir.Location);
3955                               OK := False;
3956                               exit;
3957                            end if;
3958                         end loop;
3959
3960                         if OK then
3961
3962                            --  The library ALI directory cannot be the same as
3963                            --  a source directory of another project either.
3964
3965                            ALI_Project_Loop :
3966                            for
3967                              Pid in 1 .. Project_Table.Last (In_Tree.Projects)
3968                            loop
3969                               if Pid /= Project then
3970                                  Dirs_Id :=
3971                                    In_Tree.Projects.Table (Pid).Source_Dirs;
3972
3973                                  ALI_Dir_Loop :
3974                                  while Dirs_Id /= Nil_String loop
3975                                     Dir_Elem :=
3976                                       In_Tree.String_Elements.Table (Dirs_Id);
3977                                     Dirs_Id  := Dir_Elem.Next;
3978
3979                                     if Data.Library_ALI_Dir.Name =
3980                                         Path_Name_Type (Dir_Elem.Value)
3981                                     then
3982                                        Err_Vars.Error_Msg_File_1 :=
3983                                          File_Name_Type (Dir_Elem.Value);
3984                                        Err_Vars.Error_Msg_Name_1 :=
3985                                          In_Tree.Projects.Table (Pid).Name;
3986
3987                                        Error_Msg
3988                                          (Project, In_Tree,
3989                                           "library 'A'L'I directory cannot " &
3990                                           "be the same as source directory " &
3991                                           "{ of project %%",
3992                                           Lib_ALI_Dir.Location);
3993                                        OK := False;
3994                                        exit ALI_Project_Loop;
3995                                     end if;
3996                                  end loop ALI_Dir_Loop;
3997                               end if;
3998                            end loop ALI_Project_Loop;
3999                         end if;
4000
4001                         if not OK then
4002                            Data.Library_ALI_Dir := No_Path_Information;
4003
4004                         elsif Current_Verbosity = High then
4005
4006                            --  Display the Library ALI directory in high
4007                            --  verbosity.
4008
4009                            Write_Str ("Library ALI directory =""");
4010                            Write_Str
4011                              (Get_Name_String
4012                                 (Data.Library_ALI_Dir.Display_Name));
4013                            Write_Line ("""");
4014                         end if;
4015                      end;
4016                   end if;
4017                end if;
4018             end if;
4019
4020             pragma Assert (Lib_Version.Kind = Single);
4021
4022             if Lib_Version.Value = Empty_String then
4023                if Current_Verbosity = High then
4024                   Write_Line ("No library version specified");
4025                end if;
4026
4027             else
4028                Data.Lib_Internal_Name := Lib_Version.Value;
4029             end if;
4030
4031             pragma Assert (The_Lib_Kind.Kind = Single);
4032
4033             if The_Lib_Kind.Value = Empty_String then
4034                if Current_Verbosity = High then
4035                   Write_Line ("No library kind specified");
4036                end if;
4037
4038             else
4039                Get_Name_String (The_Lib_Kind.Value);
4040
4041                declare
4042                   Kind_Name : constant String :=
4043                                 To_Lower (Name_Buffer (1 .. Name_Len));
4044
4045                   OK : Boolean := True;
4046
4047                begin
4048                   if Kind_Name = "static" then
4049                      Data.Library_Kind := Static;
4050
4051                   elsif Kind_Name = "dynamic" then
4052                      Data.Library_Kind := Dynamic;
4053
4054                   elsif Kind_Name = "relocatable" then
4055                      Data.Library_Kind := Relocatable;
4056
4057                   else
4058                      Error_Msg
4059                        (Project, In_Tree,
4060                         "illegal value for Library_Kind",
4061                         The_Lib_Kind.Location);
4062                      OK := False;
4063                   end if;
4064
4065                   if Current_Verbosity = High and then OK then
4066                      Write_Str ("Library kind = ");
4067                      Write_Line (Kind_Name);
4068                   end if;
4069
4070                   if Data.Library_Kind /= Static and then
4071                     Support_For_Libraries = Prj.Static_Only
4072                   then
4073                      Error_Msg
4074                        (Project, In_Tree,
4075                         "only static libraries are supported " &
4076                         "on this platform",
4077                         The_Lib_Kind.Location);
4078                      Data.Library := False;
4079                   end if;
4080                end;
4081             end if;
4082
4083             if Data.Library then
4084                if Current_Verbosity = High then
4085                   Write_Line ("This is a library project file");
4086                end if;
4087
4088                if Get_Mode = Multi_Language then
4089                   Check_Library (Data.Extends, Extends => True);
4090
4091                   Imported_Project_List := Data.Imported_Projects;
4092                   while Imported_Project_List /= Empty_Project_List loop
4093                      Check_Library
4094                        (In_Tree.Project_Lists.Table
4095                           (Imported_Project_List).Project,
4096                         Extends => False);
4097                      Imported_Project_List :=
4098                        In_Tree.Project_Lists.Table
4099                          (Imported_Project_List).Next;
4100                   end loop;
4101                end if;
4102             end if;
4103
4104          end if;
4105       end if;
4106
4107       if Data.Extends /= No_Project then
4108          In_Tree.Projects.Table (Data.Extends).Library := False;
4109       end if;
4110    end Check_Library_Attributes;
4111
4112    --------------------------
4113    -- Check_Package_Naming --
4114    --------------------------
4115
4116    procedure Check_Package_Naming
4117      (Project : Project_Id;
4118       In_Tree : Project_Tree_Ref;
4119       Data    : in out Project_Data)
4120    is
4121       Naming_Id : constant Package_Id :=
4122                     Util.Value_Of (Name_Naming, Data.Decl.Packages, In_Tree);
4123
4124       Naming    : Package_Element;
4125
4126    begin
4127       --  If there is a package Naming, we will put in Data.Naming
4128       --  what is in this package Naming.
4129
4130       if Naming_Id /= No_Package then
4131          Naming := In_Tree.Packages.Table (Naming_Id);
4132
4133          if Current_Verbosity = High then
4134             Write_Line ("Checking ""Naming"".");
4135          end if;
4136
4137          --  Check Spec_Suffix
4138
4139          declare
4140             Spec_Suffixs : Array_Element_Id :=
4141                              Util.Value_Of
4142                                (Name_Spec_Suffix,
4143                                 Naming.Decl.Arrays,
4144                                 In_Tree);
4145
4146             Suffix  : Array_Element_Id;
4147             Element : Array_Element;
4148             Suffix2 : Array_Element_Id;
4149
4150          begin
4151             --  If some suffixes have been specified, we make sure that
4152             --  for each language for which a default suffix has been
4153             --  specified, there is a suffix specified, either the one
4154             --  in the project file or if there were none, the default.
4155
4156             if Spec_Suffixs /= No_Array_Element then
4157                Suffix := Data.Naming.Spec_Suffix;
4158
4159                while Suffix /= No_Array_Element loop
4160                   Element :=
4161                     In_Tree.Array_Elements.Table (Suffix);
4162                   Suffix2 := Spec_Suffixs;
4163
4164                   while Suffix2 /= No_Array_Element loop
4165                      exit when In_Tree.Array_Elements.Table
4166                                 (Suffix2).Index = Element.Index;
4167                      Suffix2 := In_Tree.Array_Elements.Table
4168                                  (Suffix2).Next;
4169                   end loop;
4170
4171                   --  There is a registered default suffix, but no
4172                   --  suffix specified in the project file.
4173                   --  Add the default to the array.
4174
4175                   if Suffix2 = No_Array_Element then
4176                      Array_Element_Table.Increment_Last
4177                        (In_Tree.Array_Elements);
4178                      In_Tree.Array_Elements.Table
4179                        (Array_Element_Table.Last
4180                           (In_Tree.Array_Elements)) :=
4181                        (Index                => Element.Index,
4182                         Src_Index            => Element.Src_Index,
4183                         Index_Case_Sensitive => False,
4184                         Value                => Element.Value,
4185                         Next                 => Spec_Suffixs);
4186                      Spec_Suffixs := Array_Element_Table.Last
4187                                        (In_Tree.Array_Elements);
4188                   end if;
4189
4190                   Suffix := Element.Next;
4191                end loop;
4192
4193                --  Put the resulting array as the specification suffixes
4194
4195                Data.Naming.Spec_Suffix := Spec_Suffixs;
4196             end if;
4197          end;
4198
4199          declare
4200             Current : Array_Element_Id;
4201             Element : Array_Element;
4202
4203          begin
4204             Current := Data.Naming.Spec_Suffix;
4205             while Current /= No_Array_Element loop
4206                Element := In_Tree.Array_Elements.Table (Current);
4207                Get_Name_String (Element.Value.Value);
4208
4209                if Name_Len = 0 then
4210                   Error_Msg
4211                     (Project, In_Tree,
4212                      "Spec_Suffix cannot be empty",
4213                      Element.Value.Location);
4214                end if;
4215
4216                In_Tree.Array_Elements.Table (Current) := Element;
4217                Current := Element.Next;
4218             end loop;
4219          end;
4220
4221          --  Check Body_Suffix
4222
4223          declare
4224             Impl_Suffixs : Array_Element_Id :=
4225                              Util.Value_Of
4226                                (Name_Body_Suffix,
4227                                 Naming.Decl.Arrays,
4228                                 In_Tree);
4229
4230             Suffix  : Array_Element_Id;
4231             Element : Array_Element;
4232             Suffix2 : Array_Element_Id;
4233
4234          begin
4235             --  If some suffixes have been specified, we make sure that
4236             --  for each language for which a default suffix has been
4237             --  specified, there is a suffix specified, either the one
4238             --  in the project file or if there were none, the default.
4239
4240             if Impl_Suffixs /= No_Array_Element then
4241                Suffix := Data.Naming.Body_Suffix;
4242                while Suffix /= No_Array_Element loop
4243                   Element :=
4244                     In_Tree.Array_Elements.Table (Suffix);
4245
4246                   Suffix2 := Impl_Suffixs;
4247                   while Suffix2 /= No_Array_Element loop
4248                      exit when In_Tree.Array_Elements.Table
4249                                 (Suffix2).Index = Element.Index;
4250                      Suffix2 := In_Tree.Array_Elements.Table
4251                                   (Suffix2).Next;
4252                   end loop;
4253
4254                   --  There is a registered default suffix, but no suffix was
4255                   --  specified in the project file. Add default to the array.
4256
4257                   if Suffix2 = No_Array_Element then
4258                      Array_Element_Table.Increment_Last
4259                        (In_Tree.Array_Elements);
4260                      In_Tree.Array_Elements.Table
4261                        (Array_Element_Table.Last
4262                           (In_Tree.Array_Elements)) :=
4263                        (Index                => Element.Index,
4264                         Src_Index            => Element.Src_Index,
4265                         Index_Case_Sensitive => False,
4266                         Value                => Element.Value,
4267                         Next                 => Impl_Suffixs);
4268                      Impl_Suffixs := Array_Element_Table.Last
4269                                        (In_Tree.Array_Elements);
4270                   end if;
4271
4272                   Suffix := Element.Next;
4273                end loop;
4274
4275                --  Put the resulting array as the implementation suffixes
4276
4277                Data.Naming.Body_Suffix := Impl_Suffixs;
4278             end if;
4279          end;
4280
4281          declare
4282             Current : Array_Element_Id;
4283             Element : Array_Element;
4284
4285          begin
4286             Current := Data.Naming.Body_Suffix;
4287             while Current /= No_Array_Element loop
4288                Element := In_Tree.Array_Elements.Table (Current);
4289                Get_Name_String (Element.Value.Value);
4290
4291                if Name_Len = 0 then
4292                   Error_Msg
4293                     (Project, In_Tree,
4294                      "Body_Suffix cannot be empty",
4295                      Element.Value.Location);
4296                end if;
4297
4298                In_Tree.Array_Elements.Table (Current) := Element;
4299                Current := Element.Next;
4300             end loop;
4301          end;
4302
4303          --  Get the exceptions, if any
4304
4305          Data.Naming.Specification_Exceptions :=
4306            Util.Value_Of
4307              (Name_Specification_Exceptions,
4308               In_Arrays => Naming.Decl.Arrays,
4309               In_Tree   => In_Tree);
4310
4311          Data.Naming.Implementation_Exceptions :=
4312            Util.Value_Of
4313              (Name_Implementation_Exceptions,
4314               In_Arrays => Naming.Decl.Arrays,
4315               In_Tree   => In_Tree);
4316       end if;
4317    end Check_Package_Naming;
4318
4319    ---------------------------------
4320    -- Check_Programming_Languages --
4321    ---------------------------------
4322
4323    procedure Check_Programming_Languages
4324      (In_Tree : Project_Tree_Ref;
4325       Project : Project_Id;
4326       Data    : in out Project_Data)
4327    is
4328       Languages   : Variable_Value := Nil_Variable_Value;
4329       Def_Lang    : Variable_Value := Nil_Variable_Value;
4330       Def_Lang_Id : Name_Id;
4331
4332    begin
4333       Data.First_Language_Processing := No_Language_Index;
4334       Languages :=
4335         Prj.Util.Value_Of (Name_Languages, Data.Decl.Attributes, In_Tree);
4336       Def_Lang :=
4337         Prj.Util.Value_Of
4338           (Name_Default_Language, Data.Decl.Attributes, In_Tree);
4339       Data.Ada_Sources_Present   := Data.Source_Dirs /= Nil_String;
4340       Data.Other_Sources_Present := Data.Source_Dirs /= Nil_String;
4341
4342       if Data.Source_Dirs /= Nil_String then
4343
4344          --  Check if languages are specified in this project
4345
4346          if Languages.Default then
4347
4348             --  Attribute Languages is not specified. So, it defaults to
4349             --  a project of the default language only.
4350
4351             Name_List_Table.Increment_Last (In_Tree.Name_Lists);
4352             Data.Languages := Name_List_Table.Last (In_Tree.Name_Lists);
4353
4354             --  In Ada_Only mode, the default language is Ada
4355
4356             if Get_Mode = Ada_Only then
4357                In_Tree.Name_Lists.Table (Data.Languages) :=
4358                  (Name => Name_Ada, Next => No_Name_List);
4359
4360                --  Attribute Languages is not specified. So, it defaults to
4361                --  a project of language Ada only. No sources of languages
4362                --  other than Ada
4363
4364                Data.Other_Sources_Present := False;
4365
4366             else
4367                --  Fail if there is no default language defined
4368
4369                if Def_Lang.Default then
4370                   if not Default_Language_Is_Ada then
4371                      Error_Msg
4372                        (Project,
4373                         In_Tree,
4374                         "no languages defined for this project",
4375                         Data.Location);
4376                      Def_Lang_Id := No_Name;
4377                   else
4378                      Def_Lang_Id := Name_Ada;
4379                   end if;
4380
4381                else
4382                   Get_Name_String (Def_Lang.Value);
4383                   To_Lower (Name_Buffer (1 .. Name_Len));
4384                   Def_Lang_Id := Name_Find;
4385                end if;
4386
4387                if Def_Lang_Id /=  No_Name then
4388                   In_Tree.Name_Lists.Table (Data.Languages) :=
4389                     (Name => Def_Lang_Id, Next => No_Name_List);
4390
4391                   Language_Data_Table.Increment_Last (In_Tree.Languages_Data);
4392
4393                   Data.First_Language_Processing :=
4394                     Language_Data_Table.Last (In_Tree.Languages_Data);
4395                   In_Tree.Languages_Data.Table
4396                     (Data.First_Language_Processing) := No_Language_Data;
4397                   In_Tree.Languages_Data.Table
4398                     (Data.First_Language_Processing).Name := Def_Lang_Id;
4399                   Get_Name_String (Def_Lang_Id);
4400                   Name_Buffer (1) := GNAT.Case_Util.To_Upper (Name_Buffer (1));
4401                   In_Tree.Languages_Data.Table
4402                     (Data.First_Language_Processing).Display_Name := Name_Find;
4403
4404                   if Def_Lang_Id = Name_Ada then
4405                      In_Tree.Languages_Data.Table
4406                        (Data.First_Language_Processing).Config.Kind
4407                        := Unit_Based;
4408                      In_Tree.Languages_Data.Table
4409                        (Data.First_Language_Processing).Config.Dependency_Kind
4410                        := ALI_File;
4411                      Data.Unit_Based_Language_Name := Name_Ada;
4412                      Data.Unit_Based_Language_Index :=
4413                        Data.First_Language_Processing;
4414                   else
4415                      In_Tree.Languages_Data.Table
4416                        (Data.First_Language_Processing).Config.Kind
4417                        := File_Based;
4418                   end if;
4419                end if;
4420             end if;
4421
4422          else
4423             declare
4424                Current           : String_List_Id := Languages.Values;
4425                Element           : String_Element;
4426                Lang_Name         : Name_Id;
4427                Index             : Language_Index;
4428                Lang_Data         : Language_Data;
4429                NL_Id             : Name_List_Index := No_Name_List;
4430
4431             begin
4432                --  Assume there are no language declared
4433
4434                Data.Ada_Sources_Present := False;
4435                Data.Other_Sources_Present := False;
4436
4437                --  If there are no languages declared, there are no sources
4438
4439                if Current = Nil_String then
4440                   Data.Source_Dirs := Nil_String;
4441
4442                   if Data.Qualifier = Standard then
4443                      Error_Msg
4444                        (Project,
4445                         In_Tree,
4446                         "a standard project cannot have no language declared",
4447                         Languages.Location);
4448                   end if;
4449
4450                else
4451                   --  Look through all the languages specified in attribute
4452                   --  Languages.
4453
4454                   while Current /= Nil_String loop
4455                      Element :=
4456                        In_Tree.String_Elements.Table (Current);
4457                      Get_Name_String (Element.Value);
4458                      To_Lower (Name_Buffer (1 .. Name_Len));
4459                      Lang_Name := Name_Find;
4460
4461                      NL_Id := Data.Languages;
4462                      while NL_Id /= No_Name_List loop
4463                         exit when
4464                           Lang_Name = In_Tree.Name_Lists.Table (NL_Id).Name;
4465                         NL_Id := In_Tree.Name_Lists.Table (NL_Id).Next;
4466                      end loop;
4467
4468                      if NL_Id = No_Name_List then
4469                         Name_List_Table.Increment_Last (In_Tree.Name_Lists);
4470
4471                         if Data.Languages = No_Name_List then
4472                            Data.Languages :=
4473                              Name_List_Table.Last (In_Tree.Name_Lists);
4474
4475                         else
4476                            NL_Id := Data.Languages;
4477                            while In_Tree.Name_Lists.Table (NL_Id).Next /=
4478                                    No_Name_List
4479                            loop
4480                               NL_Id := In_Tree.Name_Lists.Table (NL_Id).Next;
4481                            end loop;
4482
4483                            In_Tree.Name_Lists.Table (NL_Id).Next :=
4484                              Name_List_Table.Last (In_Tree.Name_Lists);
4485                         end if;
4486
4487                         NL_Id := Name_List_Table.Last (In_Tree.Name_Lists);
4488                         In_Tree.Name_Lists.Table (NL_Id) :=
4489                           (Lang_Name, No_Name_List);
4490
4491                         if Get_Mode = Ada_Only then
4492                            --  Check for language Ada
4493
4494                            if Lang_Name = Name_Ada then
4495                               Data.Ada_Sources_Present := True;
4496
4497                            else
4498                               Data.Other_Sources_Present := True;
4499                            end if;
4500
4501                         else
4502                            Language_Data_Table.Increment_Last
4503                                                  (In_Tree.Languages_Data);
4504                            Index :=
4505                              Language_Data_Table.Last (In_Tree.Languages_Data);
4506                            Lang_Data.Name := Lang_Name;
4507                            Lang_Data.Display_Name := Element.Value;
4508                            Lang_Data.Next := Data.First_Language_Processing;
4509
4510                            if Lang_Name = Name_Ada then
4511                               Lang_Data.Config.Kind := Unit_Based;
4512                               Lang_Data.Config.Dependency_Kind := ALI_File;
4513                               Data.Unit_Based_Language_Name := Name_Ada;
4514                               Data.Unit_Based_Language_Index := Index;
4515
4516                            else
4517                               Lang_Data.Config.Kind := File_Based;
4518                               Lang_Data.Config.Dependency_Kind := None;
4519                            end if;
4520
4521                            In_Tree.Languages_Data.Table (Index) := Lang_Data;
4522                            Data.First_Language_Processing := Index;
4523                         end if;
4524                      end if;
4525
4526                      Current := Element.Next;
4527                   end loop;
4528                end if;
4529             end;
4530          end if;
4531       end if;
4532    end Check_Programming_Languages;
4533
4534    -------------------
4535    -- Check_Project --
4536    -------------------
4537
4538    function Check_Project
4539      (P            : Project_Id;
4540       Root_Project : Project_Id;
4541       In_Tree      : Project_Tree_Ref;
4542       Extending    : Boolean) return Boolean
4543    is
4544    begin
4545       if P = Root_Project then
4546          return True;
4547
4548       elsif Extending then
4549          declare
4550             Data : Project_Data := In_Tree.Projects.Table (Root_Project);
4551
4552          begin
4553             while Data.Extends /= No_Project loop
4554                if P = Data.Extends then
4555                   return True;
4556                end if;
4557
4558                Data := In_Tree.Projects.Table (Data.Extends);
4559             end loop;
4560          end;
4561       end if;
4562
4563       return False;
4564    end Check_Project;
4565
4566    -------------------------------
4567    -- Check_Stand_Alone_Library --
4568    -------------------------------
4569
4570    procedure Check_Stand_Alone_Library
4571      (Project     : Project_Id;
4572       In_Tree     : Project_Tree_Ref;
4573       Data        : in out Project_Data;
4574       Current_Dir : String;
4575       Extending   : Boolean)
4576    is
4577       Lib_Interfaces      : constant Prj.Variable_Value :=
4578                               Prj.Util.Value_Of
4579                                 (Snames.Name_Library_Interface,
4580                                  Data.Decl.Attributes,
4581                                  In_Tree);
4582
4583       Lib_Auto_Init       : constant Prj.Variable_Value :=
4584                               Prj.Util.Value_Of
4585                                 (Snames.Name_Library_Auto_Init,
4586                                  Data.Decl.Attributes,
4587                                  In_Tree);
4588
4589       Lib_Src_Dir         : constant Prj.Variable_Value :=
4590                               Prj.Util.Value_Of
4591                                 (Snames.Name_Library_Src_Dir,
4592                                  Data.Decl.Attributes,
4593                                  In_Tree);
4594
4595       Lib_Symbol_File     : constant Prj.Variable_Value :=
4596                               Prj.Util.Value_Of
4597                                 (Snames.Name_Library_Symbol_File,
4598                                  Data.Decl.Attributes,
4599                                  In_Tree);
4600
4601       Lib_Symbol_Policy   : constant Prj.Variable_Value :=
4602                               Prj.Util.Value_Of
4603                                 (Snames.Name_Library_Symbol_Policy,
4604                                  Data.Decl.Attributes,
4605                                  In_Tree);
4606
4607       Lib_Ref_Symbol_File : constant Prj.Variable_Value :=
4608                               Prj.Util.Value_Of
4609                                 (Snames.Name_Library_Reference_Symbol_File,
4610                                  Data.Decl.Attributes,
4611                                  In_Tree);
4612
4613       Auto_Init_Supported : Boolean;
4614       OK                  : Boolean := True;
4615       Source              : Source_Id;
4616       Next_Proj           : Project_Id;
4617
4618    begin
4619       if Get_Mode = Multi_Language then
4620          Auto_Init_Supported := Data.Config.Auto_Init_Supported;
4621       else
4622          Auto_Init_Supported :=
4623            MLib.Tgt.Standalone_Library_Auto_Init_Is_Supported;
4624       end if;
4625
4626       pragma Assert (Lib_Interfaces.Kind = List);
4627
4628       --  It is a stand-alone library project file if attribute
4629       --  Library_Interface is defined.
4630
4631       if not Lib_Interfaces.Default then
4632          SAL_Library : declare
4633             Interfaces     : String_List_Id := Lib_Interfaces.Values;
4634             Interface_ALIs : String_List_Id := Nil_String;
4635             Unit           : Name_Id;
4636             The_Unit_Id    : Unit_Index;
4637             The_Unit_Data  : Unit_Data;
4638
4639             procedure Add_ALI_For (Source : File_Name_Type);
4640             --  Add an ALI file name to the list of Interface ALIs
4641
4642             -----------------
4643             -- Add_ALI_For --
4644             -----------------
4645
4646             procedure Add_ALI_For (Source : File_Name_Type) is
4647             begin
4648                Get_Name_String (Source);
4649
4650                declare
4651                   ALI         : constant String :=
4652                                   ALI_File_Name (Name_Buffer (1 .. Name_Len));
4653                   ALI_Name_Id : Name_Id;
4654
4655                begin
4656                   Name_Len := ALI'Length;
4657                   Name_Buffer (1 .. Name_Len) := ALI;
4658                   ALI_Name_Id := Name_Find;
4659
4660                   String_Element_Table.Increment_Last
4661                     (In_Tree.String_Elements);
4662                   In_Tree.String_Elements.Table
4663                     (String_Element_Table.Last
4664                       (In_Tree.String_Elements)) :=
4665                     (Value         => ALI_Name_Id,
4666                      Index         => 0,
4667                      Display_Value => ALI_Name_Id,
4668                      Location      =>
4669                        In_Tree.String_Elements.Table
4670                          (Interfaces).Location,
4671                      Flag          => False,
4672                      Next          => Interface_ALIs);
4673                   Interface_ALIs := String_Element_Table.Last
4674                                       (In_Tree.String_Elements);
4675                end;
4676             end Add_ALI_For;
4677
4678          --  Start of processing for SAL_Library
4679
4680          begin
4681             Data.Standalone_Library := True;
4682
4683             --  Library_Interface cannot be an empty list
4684
4685             if Interfaces = Nil_String then
4686                Error_Msg
4687                  (Project, In_Tree,
4688                   "Library_Interface cannot be an empty list",
4689                   Lib_Interfaces.Location);
4690             end if;
4691
4692             --  Process each unit name specified in the attribute
4693             --  Library_Interface.
4694
4695             while Interfaces /= Nil_String loop
4696                Get_Name_String
4697                  (In_Tree.String_Elements.Table (Interfaces).Value);
4698                To_Lower (Name_Buffer (1 .. Name_Len));
4699
4700                if Name_Len = 0 then
4701                   Error_Msg
4702                     (Project, In_Tree,
4703                      "an interface cannot be an empty string",
4704                      In_Tree.String_Elements.Table (Interfaces).Location);
4705
4706                else
4707                   Unit := Name_Find;
4708                   Error_Msg_Name_1 := Unit;
4709
4710                   if Get_Mode = Ada_Only then
4711                      The_Unit_Id :=
4712                        Units_Htable.Get (In_Tree.Units_HT, Unit);
4713
4714                      if The_Unit_Id = No_Unit_Index then
4715                         Error_Msg
4716                           (Project, In_Tree,
4717                            "unknown unit %%",
4718                            In_Tree.String_Elements.Table
4719                              (Interfaces).Location);
4720
4721                      else
4722                         --  Check that the unit is part of the project
4723
4724                         The_Unit_Data :=
4725                           In_Tree.Units.Table (The_Unit_Id);
4726
4727                         if The_Unit_Data.File_Names (Body_Part).Name /= No_File
4728                           and then The_Unit_Data.File_Names
4729                                      (Body_Part).Path.Name /= Slash
4730                         then
4731                            if Check_Project
4732                              (The_Unit_Data.File_Names (Body_Part).Project,
4733                               Project, In_Tree, Extending)
4734                            then
4735                               --  There is a body for this unit.
4736                               --  If there is no spec, we need to check
4737                               --  that it is not a subunit.
4738
4739                               if The_Unit_Data.File_Names
4740                                 (Specification).Name = No_File
4741                               then
4742                                  declare
4743                                     Src_Ind : Source_File_Index;
4744
4745                                  begin
4746                                     Src_Ind := Sinput.P.Load_Project_File
4747                                       (Get_Name_String
4748                                          (The_Unit_Data.File_Names
4749                                             (Body_Part).Path.Name));
4750
4751                                     if Sinput.P.Source_File_Is_Subunit
4752                                       (Src_Ind)
4753                                     then
4754                                        Error_Msg
4755                                          (Project, In_Tree,
4756                                           "%% is a subunit; " &
4757                                           "it cannot be an interface",
4758                                           In_Tree.
4759                                             String_Elements.Table
4760                                               (Interfaces).Location);
4761                                     end if;
4762                                  end;
4763                               end if;
4764
4765                               --  The unit is not a subunit, so we add
4766                               --  to the Interface ALIs the ALI file
4767                               --  corresponding to the body.
4768
4769                               Add_ALI_For
4770                                 (The_Unit_Data.File_Names (Body_Part).Name);
4771
4772                            else
4773                               Error_Msg
4774                                 (Project, In_Tree,
4775                                  "%% is not an unit of this project",
4776                                  In_Tree.String_Elements.Table
4777                                    (Interfaces).Location);
4778                            end if;
4779
4780                         elsif The_Unit_Data.File_Names
4781                           (Specification).Name /= No_File
4782                           and then The_Unit_Data.File_Names
4783                             (Specification).Path.Name /= Slash
4784                           and then Check_Project
4785                             (The_Unit_Data.File_Names
4786                                  (Specification).Project,
4787                              Project, In_Tree, Extending)
4788
4789                         then
4790                            --  The unit is part of the project, it has
4791                            --  a spec, but no body. We add to the Interface
4792                            --  ALIs the ALI file corresponding to the spec.
4793
4794                            Add_ALI_For
4795                              (The_Unit_Data.File_Names (Specification).Name);
4796
4797                         else
4798                            Error_Msg
4799                              (Project, In_Tree,
4800                               "%% is not an unit of this project",
4801                               In_Tree.String_Elements.Table
4802                                 (Interfaces).Location);
4803                         end if;
4804                      end if;
4805
4806                   else
4807                      --  Multi_Language mode
4808
4809                      Next_Proj := Data.Extends;
4810                      Source := Data.First_Source;
4811
4812                      loop
4813                         while Source /= No_Source and then
4814                               In_Tree.Sources.Table (Source).Unit /= Unit
4815                         loop
4816                            Source :=
4817                              In_Tree.Sources.Table (Source).Next_In_Project;
4818                         end loop;
4819
4820                         exit when Source /= No_Source or else
4821                                   Next_Proj = No_Project;
4822
4823                         Source :=
4824                           In_Tree.Projects.Table (Next_Proj).First_Source;
4825                         Next_Proj :=
4826                           In_Tree.Projects.Table (Next_Proj).Extends;
4827                      end loop;
4828
4829                      if Source /= No_Source then
4830                         if In_Tree.Sources.Table (Source).Kind = Sep then
4831                            Source := No_Source;
4832
4833                         elsif In_Tree.Sources.Table (Source).Kind = Spec
4834                           and then
4835                           In_Tree.Sources.Table (Source).Other_Part /=
4836                           No_Source
4837                         then
4838                            Source := In_Tree.Sources.Table (Source).Other_Part;
4839                         end if;
4840                      end if;
4841
4842                      if Source /= No_Source then
4843                         if In_Tree.Sources.Table (Source).Project /= Project
4844                           and then
4845                             not Is_Extending
4846                               (Project,
4847                                In_Tree.Sources.Table (Source).Project,
4848                                In_Tree)
4849                         then
4850                            Source := No_Source;
4851                         end if;
4852                      end if;
4853
4854                      if Source = No_Source then
4855                            Error_Msg
4856                              (Project, In_Tree,
4857                               "%% is not an unit of this project",
4858                               In_Tree.String_Elements.Table
4859                                 (Interfaces).Location);
4860
4861                      else
4862                         if In_Tree.Sources.Table (Source).Kind = Spec and then
4863                           In_Tree.Sources.Table (Source).Other_Part /=
4864                             No_Source
4865                         then
4866                            Source := In_Tree.Sources.Table (Source).Other_Part;
4867                         end if;
4868
4869                         String_Element_Table.Increment_Last
4870                           (In_Tree.String_Elements);
4871                         In_Tree.String_Elements.Table
4872                           (String_Element_Table.Last
4873                              (In_Tree.String_Elements)) :=
4874                           (Value         =>
4875                              Name_Id (In_Tree.Sources.Table (Source).Dep_Name),
4876                            Index         => 0,
4877                            Display_Value =>
4878                              Name_Id (In_Tree.Sources.Table (Source).Dep_Name),
4879                            Location      =>
4880                              In_Tree.String_Elements.Table
4881                                (Interfaces).Location,
4882                            Flag          => False,
4883                            Next          => Interface_ALIs);
4884                         Interface_ALIs := String_Element_Table.Last
4885                           (In_Tree.String_Elements);
4886                      end if;
4887
4888                   end if;
4889
4890                end if;
4891
4892                Interfaces :=
4893                  In_Tree.String_Elements.Table (Interfaces).Next;
4894             end loop;
4895
4896             --  Put the list of Interface ALIs in the project data
4897
4898             Data.Lib_Interface_ALIs := Interface_ALIs;
4899
4900             --  Check value of attribute Library_Auto_Init and set
4901             --  Lib_Auto_Init accordingly.
4902
4903             if Lib_Auto_Init.Default then
4904
4905                --  If no attribute Library_Auto_Init is declared, then set auto
4906                --  init only if it is supported.
4907
4908                Data.Lib_Auto_Init := Auto_Init_Supported;
4909
4910             else
4911                Get_Name_String (Lib_Auto_Init.Value);
4912                To_Lower (Name_Buffer (1 .. Name_Len));
4913
4914                if Name_Buffer (1 .. Name_Len) = "false" then
4915                   Data.Lib_Auto_Init := False;
4916
4917                elsif Name_Buffer (1 .. Name_Len) = "true" then
4918                   if Auto_Init_Supported then
4919                      Data.Lib_Auto_Init := True;
4920
4921                   else
4922                      --  Library_Auto_Init cannot be "true" if auto init is not
4923                      --  supported
4924
4925                      Error_Msg
4926                        (Project, In_Tree,
4927                         "library auto init not supported " &
4928                         "on this platform",
4929                         Lib_Auto_Init.Location);
4930                   end if;
4931
4932                else
4933                   Error_Msg
4934                     (Project, In_Tree,
4935                      "invalid value for attribute Library_Auto_Init",
4936                      Lib_Auto_Init.Location);
4937                end if;
4938             end if;
4939          end SAL_Library;
4940
4941          --  If attribute Library_Src_Dir is defined and not the empty string,
4942          --  check if the directory exist and is not the object directory or
4943          --  one of the source directories. This is the directory where copies
4944          --  of the interface sources will be copied. Note that this directory
4945          --  may be the library directory.
4946
4947          if Lib_Src_Dir.Value /= Empty_String then
4948             declare
4949                Dir_Id : constant File_Name_Type :=
4950                           File_Name_Type (Lib_Src_Dir.Value);
4951
4952             begin
4953                Locate_Directory
4954                  (Project,
4955                   In_Tree,
4956                   Dir_Id,
4957                   Data.Directory.Display_Name,
4958                   Data.Library_Src_Dir.Name,
4959                   Data.Library_Src_Dir.Display_Name,
4960                   Create => "library source copy",
4961                   Current_Dir => Current_Dir,
4962                   Location => Lib_Src_Dir.Location);
4963
4964                --  If directory does not exist, report an error
4965
4966                if Data.Library_Src_Dir = No_Path_Information then
4967
4968                   --  Get the absolute name of the library directory that does
4969                   --  not exist, to report an error.
4970
4971                   declare
4972                      Dir_Name : constant String :=
4973                                   Get_Name_String (Dir_Id);
4974
4975                   begin
4976                      if Is_Absolute_Path (Dir_Name) then
4977                         Err_Vars.Error_Msg_File_1 := Dir_Id;
4978
4979                      else
4980                         Get_Name_String (Data.Directory.Name);
4981
4982                         if Name_Buffer (Name_Len) /=
4983                           Directory_Separator
4984                         then
4985                            Name_Len := Name_Len + 1;
4986                            Name_Buffer (Name_Len) :=
4987                              Directory_Separator;
4988                         end if;
4989
4990                         Name_Buffer
4991                           (Name_Len + 1 ..
4992                              Name_Len + Dir_Name'Length) :=
4993                             Dir_Name;
4994                         Name_Len := Name_Len + Dir_Name'Length;
4995                         Err_Vars.Error_Msg_Name_1 := Name_Find;
4996                      end if;
4997
4998                      --  Report the error
4999
5000                      Error_Msg_File_1 := Dir_Id;
5001                      Error_Msg
5002                        (Project, In_Tree,
5003                         "Directory { does not exist",
5004                         Lib_Src_Dir.Location);
5005                   end;
5006
5007                   --  Report error if it is the same as the object directory
5008
5009                elsif Data.Library_Src_Dir = Data.Object_Directory then
5010                   Error_Msg
5011                     (Project, In_Tree,
5012                      "directory to copy interfaces cannot be " &
5013                      "the object directory",
5014                      Lib_Src_Dir.Location);
5015                   Data.Library_Src_Dir := No_Path_Information;
5016
5017                else
5018                   declare
5019                      Src_Dirs : String_List_Id;
5020                      Src_Dir  : String_Element;
5021
5022                   begin
5023                      --  Interface copy directory cannot be one of the source
5024                      --  directory of the current project.
5025
5026                      Src_Dirs := Data.Source_Dirs;
5027                      while Src_Dirs /= Nil_String loop
5028                         Src_Dir := In_Tree.String_Elements.Table (Src_Dirs);
5029
5030                         --  Report error if it is one of the source directories
5031
5032                         if Data.Library_Src_Dir.Name =
5033                           Path_Name_Type (Src_Dir.Value)
5034                         then
5035                            Error_Msg
5036                              (Project, In_Tree,
5037                               "directory to copy interfaces cannot " &
5038                               "be one of the source directories",
5039                               Lib_Src_Dir.Location);
5040                            Data.Library_Src_Dir := No_Path_Information;
5041                            exit;
5042                         end if;
5043
5044                         Src_Dirs := Src_Dir.Next;
5045                      end loop;
5046
5047                      if Data.Library_Src_Dir /= No_Path_Information then
5048
5049                         --  It cannot be a source directory of any other
5050                         --  project either.
5051
5052                         Project_Loop : for Pid in 1 ..
5053                           Project_Table.Last (In_Tree.Projects)
5054                         loop
5055                            Src_Dirs :=
5056                              In_Tree.Projects.Table (Pid).Source_Dirs;
5057                            Dir_Loop : while Src_Dirs /= Nil_String loop
5058                               Src_Dir :=
5059                                 In_Tree.String_Elements.Table (Src_Dirs);
5060
5061                               --  Report error if it is one of the source
5062                               --  directories
5063
5064                               if Data.Library_Src_Dir.Name =
5065                                 Path_Name_Type (Src_Dir.Value)
5066                               then
5067                                  Error_Msg_File_1 :=
5068                                    File_Name_Type (Src_Dir.Value);
5069                                  Error_Msg_Name_1 :=
5070                                    In_Tree.Projects.Table (Pid).Name;
5071                                  Error_Msg
5072                                    (Project, In_Tree,
5073                                     "directory to copy interfaces cannot " &
5074                                     "be the same as source directory { of " &
5075                                     "project %%",
5076                                     Lib_Src_Dir.Location);
5077                                  Data.Library_Src_Dir := No_Path_Information;
5078                                  exit Project_Loop;
5079                               end if;
5080
5081                               Src_Dirs := Src_Dir.Next;
5082                            end loop Dir_Loop;
5083                         end loop Project_Loop;
5084                      end if;
5085                   end;
5086
5087                   --  In high verbosity, if there is a valid Library_Src_Dir,
5088                   --  display its path name.
5089
5090                   if Data.Library_Src_Dir /= No_Path_Information
5091                     and then Current_Verbosity = High
5092                   then
5093                      Write_Str ("Directory to copy interfaces =""");
5094                      Write_Str (Get_Name_String (Data.Library_Src_Dir.Name));
5095                      Write_Line ("""");
5096                   end if;
5097                end if;
5098             end;
5099          end if;
5100
5101          --  Check the symbol related attributes
5102
5103          --  First, the symbol policy
5104
5105          if not Lib_Symbol_Policy.Default then
5106             declare
5107                Value : constant String :=
5108                  To_Lower
5109                    (Get_Name_String (Lib_Symbol_Policy.Value));
5110
5111             begin
5112                --  Symbol policy must hove one of a limited number of values
5113
5114                if Value = "autonomous" or else Value = "default" then
5115                   Data.Symbol_Data.Symbol_Policy := Autonomous;
5116
5117                elsif Value = "compliant" then
5118                   Data.Symbol_Data.Symbol_Policy := Compliant;
5119
5120                elsif Value = "controlled" then
5121                   Data.Symbol_Data.Symbol_Policy := Controlled;
5122
5123                elsif Value = "restricted" then
5124                   Data.Symbol_Data.Symbol_Policy := Restricted;
5125
5126                elsif Value = "direct" then
5127                   Data.Symbol_Data.Symbol_Policy := Direct;
5128
5129                else
5130                   Error_Msg
5131                     (Project, In_Tree,
5132                      "illegal value for Library_Symbol_Policy",
5133                      Lib_Symbol_Policy.Location);
5134                end if;
5135             end;
5136          end if;
5137
5138          --  If attribute Library_Symbol_File is not specified, symbol policy
5139          --  cannot be Restricted.
5140
5141          if Lib_Symbol_File.Default then
5142             if Data.Symbol_Data.Symbol_Policy = Restricted then
5143                Error_Msg
5144                  (Project, In_Tree,
5145                   "Library_Symbol_File needs to be defined when " &
5146                   "symbol policy is Restricted",
5147                   Lib_Symbol_Policy.Location);
5148             end if;
5149
5150          else
5151             --  Library_Symbol_File is defined
5152
5153             Data.Symbol_Data.Symbol_File :=
5154               Path_Name_Type (Lib_Symbol_File.Value);
5155
5156             Get_Name_String (Lib_Symbol_File.Value);
5157
5158             if Name_Len = 0 then
5159                Error_Msg
5160                  (Project, In_Tree,
5161                   "symbol file name cannot be an empty string",
5162                   Lib_Symbol_File.Location);
5163
5164             else
5165                OK := not Is_Absolute_Path (Name_Buffer (1 .. Name_Len));
5166
5167                if OK then
5168                   for J in 1 .. Name_Len loop
5169                      if Name_Buffer (J) = '/'
5170                        or else Name_Buffer (J) = Directory_Separator
5171                      then
5172                         OK := False;
5173                         exit;
5174                      end if;
5175                   end loop;
5176                end if;
5177
5178                if not OK then
5179                   Error_Msg_File_1 := File_Name_Type (Lib_Symbol_File.Value);
5180                   Error_Msg
5181                     (Project, In_Tree,
5182                      "symbol file name { is illegal. " &
5183                      "Name cannot include directory info.",
5184                      Lib_Symbol_File.Location);
5185                end if;
5186             end if;
5187          end if;
5188
5189          --  If attribute Library_Reference_Symbol_File is not defined,
5190          --  symbol policy cannot be Compliant or Controlled.
5191
5192          if Lib_Ref_Symbol_File.Default then
5193             if Data.Symbol_Data.Symbol_Policy = Compliant
5194               or else Data.Symbol_Data.Symbol_Policy = Controlled
5195             then
5196                Error_Msg
5197                  (Project, In_Tree,
5198                   "a reference symbol file need to be defined",
5199                   Lib_Symbol_Policy.Location);
5200             end if;
5201
5202          else
5203             --  Library_Reference_Symbol_File is defined, check file exists
5204
5205             Data.Symbol_Data.Reference :=
5206               Path_Name_Type (Lib_Ref_Symbol_File.Value);
5207
5208             Get_Name_String (Lib_Ref_Symbol_File.Value);
5209
5210             if Name_Len = 0 then
5211                Error_Msg
5212                  (Project, In_Tree,
5213                   "reference symbol file name cannot be an empty string",
5214                   Lib_Symbol_File.Location);
5215
5216             else
5217                if not Is_Absolute_Path (Name_Buffer (1 .. Name_Len)) then
5218                   Name_Len := 0;
5219                   Add_Str_To_Name_Buffer
5220                     (Get_Name_String (Data.Directory.Name));
5221                   Add_Char_To_Name_Buffer (Directory_Separator);
5222                   Add_Str_To_Name_Buffer
5223                     (Get_Name_String (Lib_Ref_Symbol_File.Value));
5224                   Data.Symbol_Data.Reference := Name_Find;
5225                end if;
5226
5227                if not Is_Regular_File
5228                  (Get_Name_String (Data.Symbol_Data.Reference))
5229                then
5230                   Error_Msg_File_1 :=
5231                     File_Name_Type (Lib_Ref_Symbol_File.Value);
5232
5233                   --  For controlled and direct symbol policies, it is an error
5234                   --  if the reference symbol file does not exist. For other
5235                   --  symbol policies, this is just a warning
5236
5237                   Error_Msg_Warn :=
5238                     Data.Symbol_Data.Symbol_Policy /= Controlled
5239                     and then Data.Symbol_Data.Symbol_Policy /= Direct;
5240
5241                   Error_Msg
5242                     (Project, In_Tree,
5243                      "<library reference symbol file { does not exist",
5244                      Lib_Ref_Symbol_File.Location);
5245
5246                   --  In addition in the non-controlled case, if symbol policy
5247                   --  is Compliant, it is changed to Autonomous, because there
5248                   --  is no reference to check against, and we don't want to
5249                   --  fail in this case.
5250
5251                   if Data.Symbol_Data.Symbol_Policy /= Controlled then
5252                      if Data.Symbol_Data.Symbol_Policy = Compliant then
5253                         Data.Symbol_Data.Symbol_Policy := Autonomous;
5254                      end if;
5255                   end if;
5256                end if;
5257
5258                --  If both the reference symbol file and the symbol file are
5259                --  defined, then check that they are not the same file.
5260
5261                if Data.Symbol_Data.Symbol_File /= No_Path then
5262                   Get_Name_String (Data.Symbol_Data.Symbol_File);
5263
5264                   if Name_Len > 0 then
5265                      declare
5266                         Symb_Path : constant String :=
5267                                       Normalize_Pathname
5268                                         (Get_Name_String
5269                                            (Data.Object_Directory.Name) &
5270                                          Directory_Separator &
5271                                          Name_Buffer (1 .. Name_Len),
5272                                          Directory     => Current_Dir,
5273                                          Resolve_Links =>
5274                                            Opt.Follow_Links_For_Files);
5275                         Ref_Path  : constant String :=
5276                                       Normalize_Pathname
5277                                         (Get_Name_String
5278                                            (Data.Symbol_Data.Reference),
5279                                          Directory     => Current_Dir,
5280                                          Resolve_Links =>
5281                                            Opt.Follow_Links_For_Files);
5282                      begin
5283                         if Symb_Path = Ref_Path then
5284                            Error_Msg
5285                              (Project, In_Tree,
5286                               "library reference symbol file and library" &
5287                               " symbol file cannot be the same file",
5288                               Lib_Ref_Symbol_File.Location);
5289                         end if;
5290                      end;
5291                   end if;
5292                end if;
5293             end if;
5294          end if;
5295       end if;
5296    end Check_Stand_Alone_Library;
5297
5298    ----------------------------
5299    -- Compute_Directory_Last --
5300    ----------------------------
5301
5302    function Compute_Directory_Last (Dir : String) return Natural is
5303    begin
5304       if Dir'Length > 1
5305         and then (Dir (Dir'Last - 1) = Directory_Separator
5306                   or else Dir (Dir'Last - 1) = '/')
5307       then
5308          return Dir'Last - 1;
5309       else
5310          return Dir'Last;
5311       end if;
5312    end Compute_Directory_Last;
5313
5314    ---------------
5315    -- Error_Msg --
5316    ---------------
5317
5318    procedure Error_Msg
5319      (Project       : Project_Id;
5320       In_Tree       : Project_Tree_Ref;
5321       Msg           : String;
5322       Flag_Location : Source_Ptr)
5323    is
5324       Real_Location : Source_Ptr := Flag_Location;
5325       Error_Buffer  : String (1 .. 5_000);
5326       Error_Last    : Natural := 0;
5327       Name_Number   : Natural := 0;
5328       File_Number   : Natural := 0;
5329       First         : Positive := Msg'First;
5330       Index         : Positive;
5331
5332       procedure Add (C : Character);
5333       --  Add a character to the buffer
5334
5335       procedure Add (S : String);
5336       --  Add a string to the buffer
5337
5338       procedure Add_Name;
5339       --  Add a name to the buffer
5340
5341       procedure Add_File;
5342       --  Add a file name to the buffer
5343
5344       ---------
5345       -- Add --
5346       ---------
5347
5348       procedure Add (C : Character) is
5349       begin
5350          Error_Last := Error_Last + 1;
5351          Error_Buffer (Error_Last) := C;
5352       end Add;
5353
5354       procedure Add (S : String) is
5355       begin
5356          Error_Buffer (Error_Last + 1 .. Error_Last + S'Length) := S;
5357          Error_Last := Error_Last + S'Length;
5358       end Add;
5359
5360       --------------
5361       -- Add_File --
5362       --------------
5363
5364       procedure Add_File is
5365          File : File_Name_Type;
5366
5367       begin
5368          Add ('"');
5369          File_Number := File_Number + 1;
5370
5371          case File_Number is
5372             when 1 =>
5373                File := Err_Vars.Error_Msg_File_1;
5374             when 2 =>
5375                File := Err_Vars.Error_Msg_File_2;
5376             when 3 =>
5377                File := Err_Vars.Error_Msg_File_3;
5378             when others =>
5379                null;
5380          end case;
5381
5382          Get_Name_String (File);
5383          Add (Name_Buffer (1 .. Name_Len));
5384          Add ('"');
5385       end Add_File;
5386
5387       --------------
5388       -- Add_Name --
5389       --------------
5390
5391       procedure Add_Name is
5392          Name : Name_Id;
5393
5394       begin
5395          Add ('"');
5396          Name_Number := Name_Number + 1;
5397
5398          case Name_Number is
5399             when 1 =>
5400                Name := Err_Vars.Error_Msg_Name_1;
5401             when 2 =>
5402                Name := Err_Vars.Error_Msg_Name_2;
5403             when 3 =>
5404                Name := Err_Vars.Error_Msg_Name_3;
5405             when others =>
5406                null;
5407          end case;
5408
5409          Get_Name_String (Name);
5410          Add (Name_Buffer (1 .. Name_Len));
5411          Add ('"');
5412       end Add_Name;
5413
5414    --  Start of processing for Error_Msg
5415
5416    begin
5417       --  If location of error is unknown, use the location of the project
5418
5419       if Real_Location = No_Location then
5420          Real_Location := In_Tree.Projects.Table (Project).Location;
5421       end if;
5422
5423       if Error_Report = null then
5424          Prj.Err.Error_Msg (Msg, Real_Location);
5425          return;
5426       end if;
5427
5428       --  Ignore continuation character
5429
5430       if Msg (First) = '\' then
5431          First := First + 1;
5432       end if;
5433
5434       --  Warning character is always the first one in this package
5435       --  this is an undocumented kludge???
5436
5437       if Msg (First) = '?' then
5438          First := First + 1;
5439          Add ("Warning: ");
5440
5441       elsif Msg (First) = '<' then
5442          First := First + 1;
5443
5444          if Err_Vars.Error_Msg_Warn then
5445             Add ("Warning: ");
5446          end if;
5447       end if;
5448
5449       Index := First;
5450       while Index <= Msg'Last loop
5451          if Msg (Index) = '{' then
5452             Add_File;
5453
5454          elsif Msg (Index) = '%' then
5455             if Index < Msg'Last and then Msg (Index + 1) = '%' then
5456                Index := Index + 1;
5457             end if;
5458
5459             Add_Name;
5460          else
5461             Add (Msg (Index));
5462          end if;
5463          Index := Index + 1;
5464
5465       end loop;
5466
5467       Error_Report (Error_Buffer (1 .. Error_Last), Project, In_Tree);
5468    end Error_Msg;
5469
5470    ----------------------
5471    -- Find_Ada_Sources --
5472    ----------------------
5473
5474    procedure Find_Ada_Sources
5475      (Project      : Project_Id;
5476       In_Tree      : Project_Tree_Ref;
5477       Data         : in out Project_Data;
5478       Current_Dir  : String)
5479    is
5480       Source_Dir      : String_List_Id := Data.Source_Dirs;
5481       Element         : String_Element;
5482       Dir             : Dir_Type;
5483       Current_Source  : String_List_Id := Nil_String;
5484       Source_Recorded : Boolean := False;
5485
5486    begin
5487       if Current_Verbosity = High then
5488          Write_Line ("Looking for sources:");
5489       end if;
5490
5491       --  For each subdirectory
5492
5493       while Source_Dir /= Nil_String loop
5494          begin
5495             Source_Recorded := False;
5496             Element := In_Tree.String_Elements.Table (Source_Dir);
5497             if Element.Value /= No_Name then
5498                Get_Name_String (Element.Display_Value);
5499
5500                declare
5501                   Source_Directory : constant String :=
5502                     Name_Buffer (1 .. Name_Len) & Directory_Separator;
5503                   Dir_Last  : constant Natural :=
5504                      Compute_Directory_Last (Source_Directory);
5505
5506                begin
5507                   if Current_Verbosity = High then
5508                      Write_Str ("Source_Dir = ");
5509                      Write_Line (Source_Directory);
5510                   end if;
5511
5512                   --  We look at every entry in the source directory
5513
5514                   Open (Dir,
5515                         Source_Directory (Source_Directory'First .. Dir_Last));
5516
5517                   loop
5518                      Read (Dir, Name_Buffer, Name_Len);
5519
5520                      if Current_Verbosity = High then
5521                         Write_Str  ("   Checking ");
5522                         Write_Line (Name_Buffer (1 .. Name_Len));
5523                      end if;
5524
5525                      exit when Name_Len = 0;
5526
5527                      declare
5528                         File_Name : constant File_Name_Type := Name_Find;
5529
5530                         --  ??? We could probably optimize the following call:
5531                         --  we need to resolve links only once for the
5532                         --  directory itself, and then do a single call to
5533                         --  readlink() for each file. Unfortunately that would
5534                         --  require a change in Normalize_Pathname so that it
5535                         --  has the option of not resolving links for its
5536                         --  Directory parameter, only for Name.
5537
5538                         Path : constant String :=
5539                                  Normalize_Pathname
5540                                    (Name      => Name_Buffer (1 .. Name_Len),
5541                                     Directory =>
5542                                       Source_Directory
5543                                         (Source_Directory'First .. Dir_Last),
5544                                     Resolve_Links =>
5545                                       Opt.Follow_Links_For_Files,
5546                                     Case_Sensitive => True);
5547
5548                         Path_Name : Path_Name_Type;
5549
5550                      begin
5551                         Name_Len := Path'Length;
5552                         Name_Buffer (1 .. Name_Len) := Path;
5553                         Path_Name := Name_Find;
5554
5555                         --  We attempt to register it as a source. However,
5556                         --  there is no error if the file does not contain a
5557                         --  valid source. But there is an error if we have a
5558                         --  duplicate unit name.
5559
5560                         Record_Ada_Source
5561                           (File_Name       => File_Name,
5562                            Path_Name       => Path_Name,
5563                            Project         => Project,
5564                            In_Tree         => In_Tree,
5565                            Data            => Data,
5566                            Location        => No_Location,
5567                            Current_Source  => Current_Source,
5568                            Source_Recorded => Source_Recorded,
5569                            Current_Dir     => Current_Dir);
5570                      end;
5571                   end loop;
5572
5573                   Close (Dir);
5574                end;
5575             end if;
5576
5577          exception
5578             when Directory_Error =>
5579                null;
5580          end;
5581
5582          if Source_Recorded then
5583             In_Tree.String_Elements.Table (Source_Dir).Flag :=
5584               True;
5585          end if;
5586
5587          Source_Dir := Element.Next;
5588       end loop;
5589
5590       if Current_Verbosity = High then
5591          Write_Line ("end Looking for sources.");
5592       end if;
5593
5594    end Find_Ada_Sources;
5595
5596    --------------------------------
5597    -- Free_Ada_Naming_Exceptions --
5598    --------------------------------
5599
5600    procedure Free_Ada_Naming_Exceptions is
5601    begin
5602       Ada_Naming_Exception_Table.Set_Last (0);
5603       Ada_Naming_Exceptions.Reset;
5604       Reverse_Ada_Naming_Exceptions.Reset;
5605    end Free_Ada_Naming_Exceptions;
5606
5607    ---------------------
5608    -- Get_Directories --
5609    ---------------------
5610
5611    procedure Get_Directories
5612      (Project     : Project_Id;
5613       In_Tree     : Project_Tree_Ref;
5614       Current_Dir : String;
5615       Data        : in out Project_Data)
5616    is
5617       Object_Dir  : constant Variable_Value :=
5618                       Util.Value_Of
5619                         (Name_Object_Dir, Data.Decl.Attributes, In_Tree);
5620
5621       Exec_Dir : constant Variable_Value :=
5622                    Util.Value_Of
5623                      (Name_Exec_Dir, Data.Decl.Attributes, In_Tree);
5624
5625       Source_Dirs : constant Variable_Value :=
5626                       Util.Value_Of
5627                         (Name_Source_Dirs, Data.Decl.Attributes, In_Tree);
5628
5629       Excluded_Source_Dirs : constant Variable_Value :=
5630                               Util.Value_Of
5631                                 (Name_Excluded_Source_Dirs,
5632                                  Data.Decl.Attributes,
5633                                  In_Tree);
5634
5635       Source_Files : constant Variable_Value :=
5636                       Util.Value_Of
5637                         (Name_Source_Files, Data.Decl.Attributes, In_Tree);
5638
5639       Last_Source_Dir : String_List_Id  := Nil_String;
5640
5641       procedure Find_Source_Dirs
5642         (From     : File_Name_Type;
5643          Location : Source_Ptr;
5644          Removed  : Boolean := False);
5645       --  Find one or several source directories, and add (or remove, if
5646       --  Removed is True) them to list of source directories of the project.
5647
5648       ----------------------
5649       -- Find_Source_Dirs --
5650       ----------------------
5651
5652       procedure Find_Source_Dirs
5653         (From     : File_Name_Type;
5654          Location : Source_Ptr;
5655          Removed  : Boolean := False)
5656       is
5657          Directory : constant String := Get_Name_String (From);
5658          Element   : String_Element;
5659
5660          procedure Recursive_Find_Dirs (Path : Name_Id);
5661          --  Find all the subdirectories (recursively) of Path and add them
5662          --  to the list of source directories of the project.
5663
5664          -------------------------
5665          -- Recursive_Find_Dirs --
5666          -------------------------
5667
5668          procedure Recursive_Find_Dirs (Path : Name_Id) is
5669             Dir     : Dir_Type;
5670             Name    : String (1 .. 250);
5671             Last    : Natural;
5672             List    : String_List_Id;
5673             Prev    : String_List_Id;
5674             Element : String_Element;
5675             Found   : Boolean := False;
5676
5677             Non_Canonical_Path : Name_Id := No_Name;
5678             Canonical_Path     : Name_Id := No_Name;
5679
5680             The_Path : constant String :=
5681                          Normalize_Pathname
5682                            (Get_Name_String (Path),
5683                             Directory     => Current_Dir,
5684                             Resolve_Links => Opt.Follow_Links_For_Dirs) &
5685                          Directory_Separator;
5686
5687             The_Path_Last : constant Natural :=
5688                               Compute_Directory_Last (The_Path);
5689
5690          begin
5691             Name_Len := The_Path_Last - The_Path'First + 1;
5692             Name_Buffer (1 .. Name_Len) :=
5693               The_Path (The_Path'First .. The_Path_Last);
5694             Non_Canonical_Path := Name_Find;
5695
5696             if Osint.File_Names_Case_Sensitive then
5697                Canonical_Path := Non_Canonical_Path;
5698             else
5699                Get_Name_String (Non_Canonical_Path);
5700                Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
5701                Canonical_Path := Name_Find;
5702             end if;
5703
5704             --  To avoid processing the same directory several times, check
5705             --  if the directory is already in Recursive_Dirs. If it is, then
5706             --  there is nothing to do, just return. If it is not, put it there
5707             --  and continue recursive processing.
5708
5709             if not Removed then
5710                if Recursive_Dirs.Get (Canonical_Path) then
5711                   return;
5712                else
5713                   Recursive_Dirs.Set (Canonical_Path, True);
5714                end if;
5715             end if;
5716
5717             --  Check if directory is already in list
5718
5719             List := Data.Source_Dirs;
5720             Prev := Nil_String;
5721             while List /= Nil_String loop
5722                Element := In_Tree.String_Elements.Table (List);
5723
5724                if Element.Value /= No_Name then
5725                   Found := Element.Value = Canonical_Path;
5726                   exit when Found;
5727                end if;
5728
5729                Prev := List;
5730                List := Element.Next;
5731             end loop;
5732
5733             --  If directory is not already in list, put it there
5734
5735             if (not Removed) and (not Found) then
5736                if Current_Verbosity = High then
5737                   Write_Str  ("   ");
5738                   Write_Line (The_Path (The_Path'First .. The_Path_Last));
5739                end if;
5740
5741                String_Element_Table.Increment_Last
5742                  (In_Tree.String_Elements);
5743                Element :=
5744                  (Value         => Canonical_Path,
5745                   Display_Value => Non_Canonical_Path,
5746                   Location      => No_Location,
5747                   Flag          => False,
5748                   Next          => Nil_String,
5749                   Index         => 0);
5750
5751                --  Case of first source directory
5752
5753                if Last_Source_Dir = Nil_String then
5754                   Data.Source_Dirs := String_Element_Table.Last
5755                                         (In_Tree.String_Elements);
5756
5757                   --  Here we already have source directories
5758
5759                else
5760                   --  Link the previous last to the new one
5761
5762                   In_Tree.String_Elements.Table
5763                     (Last_Source_Dir).Next :=
5764                       String_Element_Table.Last
5765                         (In_Tree.String_Elements);
5766                end if;
5767
5768                --  And register this source directory as the new last
5769
5770                Last_Source_Dir  := String_Element_Table.Last
5771                  (In_Tree.String_Elements);
5772                In_Tree.String_Elements.Table (Last_Source_Dir) :=
5773                  Element;
5774
5775             elsif Removed and Found then
5776                if Prev = Nil_String then
5777                   Data.Source_Dirs :=
5778                     In_Tree.String_Elements.Table (List).Next;
5779                else
5780                   In_Tree.String_Elements.Table (Prev).Next :=
5781                     In_Tree.String_Elements.Table (List).Next;
5782                end if;
5783             end if;
5784
5785             --  Now look for subdirectories. We do that even when this
5786             --  directory is already in the list, because some of its
5787             --  subdirectories may not be in the list yet.
5788
5789             Open (Dir, The_Path (The_Path'First .. The_Path_Last));
5790
5791             loop
5792                Read (Dir, Name, Last);
5793                exit when Last = 0;
5794
5795                if Name (1 .. Last) /= "."
5796                  and then Name (1 .. Last) /= ".."
5797                then
5798                   --  Avoid . and .. directories
5799
5800                   if Current_Verbosity = High then
5801                      Write_Str  ("   Checking ");
5802                      Write_Line (Name (1 .. Last));
5803                   end if;
5804
5805                   declare
5806                      Path_Name : constant String :=
5807                        Normalize_Pathname
5808                          (Name      => Name (1 .. Last),
5809                           Directory =>
5810                             The_Path (The_Path'First .. The_Path_Last),
5811                           Resolve_Links  => Opt.Follow_Links_For_Dirs,
5812                           Case_Sensitive => True);
5813
5814                   begin
5815                      if Is_Directory (Path_Name) then
5816                         --  We have found a new subdirectory, call self
5817
5818                         Name_Len := Path_Name'Length;
5819                         Name_Buffer (1 .. Name_Len) := Path_Name;
5820                         Recursive_Find_Dirs (Name_Find);
5821                      end if;
5822                   end;
5823                end if;
5824             end loop;
5825
5826             Close (Dir);
5827
5828          exception
5829             when Directory_Error =>
5830                null;
5831          end Recursive_Find_Dirs;
5832
5833       --  Start of processing for Find_Source_Dirs
5834
5835       begin
5836          if Current_Verbosity = High and then not Removed then
5837             Write_Str ("Find_Source_Dirs (""");
5838             Write_Str (Directory);
5839             Write_Line (""")");
5840          end if;
5841
5842          --  First, check if we are looking for a directory tree, indicated
5843          --  by "/**" at the end.
5844
5845          if Directory'Length >= 3
5846            and then Directory (Directory'Last - 1 .. Directory'Last) = "**"
5847            and then (Directory (Directory'Last - 2) = '/'
5848                        or else
5849                      Directory (Directory'Last - 2) = Directory_Separator)
5850          then
5851             if not Removed then
5852                Data.Known_Order_Of_Source_Dirs := False;
5853             end if;
5854
5855             Name_Len := Directory'Length - 3;
5856
5857             if Name_Len = 0 then
5858
5859                --  Case of "/**": all directories in file system
5860
5861                Name_Len := 1;
5862                Name_Buffer (1) := Directory (Directory'First);
5863
5864             else
5865                Name_Buffer (1 .. Name_Len) :=
5866                  Directory (Directory'First .. Directory'Last - 3);
5867             end if;
5868
5869             if Current_Verbosity = High then
5870                Write_Str ("Looking for all subdirectories of """);
5871                Write_Str (Name_Buffer (1 .. Name_Len));
5872                Write_Line ("""");
5873             end if;
5874
5875             declare
5876                Base_Dir : constant File_Name_Type := Name_Find;
5877                Root_Dir : constant String :=
5878                             Normalize_Pathname
5879                               (Name      => Get_Name_String (Base_Dir),
5880                                Directory =>
5881                                  Get_Name_String (Data.Directory.Display_Name),
5882                                Resolve_Links  => False,
5883                                Case_Sensitive => True);
5884
5885             begin
5886                if Root_Dir'Length = 0 then
5887                   Err_Vars.Error_Msg_File_1 := Base_Dir;
5888
5889                   if Location = No_Location then
5890                      Error_Msg
5891                        (Project, In_Tree,
5892                         "{ is not a valid directory.",
5893                         Data.Location);
5894                   else
5895                      Error_Msg
5896                        (Project, In_Tree,
5897                         "{ is not a valid directory.",
5898                         Location);
5899                   end if;
5900
5901                else
5902                   --  We have an existing directory, we register it and all of
5903                   --  its subdirectories.
5904
5905                   if Current_Verbosity = High then
5906                      Write_Line ("Looking for source directories:");
5907                   end if;
5908
5909                   Name_Len := Root_Dir'Length;
5910                   Name_Buffer (1 .. Name_Len) := Root_Dir;
5911                   Recursive_Find_Dirs (Name_Find);
5912
5913                   if Current_Verbosity = High then
5914                      Write_Line ("End of looking for source directories.");
5915                   end if;
5916                end if;
5917             end;
5918
5919          --  We have a single directory
5920
5921          else
5922             declare
5923                Path_Name         : Path_Name_Type;
5924                Display_Path_Name : Path_Name_Type;
5925                List              : String_List_Id;
5926                Prev              : String_List_Id;
5927
5928             begin
5929                Locate_Directory
5930                  (Project     => Project,
5931                   In_Tree     => In_Tree,
5932                   Name        => From,
5933                   Parent      => Data.Directory.Display_Name,
5934                   Dir         => Path_Name,
5935                   Display     => Display_Path_Name,
5936                   Current_Dir => Current_Dir);
5937
5938                if Path_Name = No_Path then
5939                   Err_Vars.Error_Msg_File_1 := From;
5940
5941                   if Location = No_Location then
5942                      Error_Msg
5943                        (Project, In_Tree,
5944                         "{ is not a valid directory",
5945                         Data.Location);
5946                   else
5947                      Error_Msg
5948                        (Project, In_Tree,
5949                         "{ is not a valid directory",
5950                         Location);
5951                   end if;
5952
5953                else
5954                   declare
5955                      Path              : constant String :=
5956                                            Get_Name_String (Path_Name) &
5957                                            Directory_Separator;
5958                      Last_Path         : constant Natural :=
5959                                            Compute_Directory_Last (Path);
5960                      Path_Id           : Name_Id;
5961                      Display_Path      : constant String :=
5962                                            Get_Name_String
5963                                              (Display_Path_Name) &
5964                                            Directory_Separator;
5965                      Last_Display_Path : constant Natural :=
5966                                            Compute_Directory_Last
5967                                              (Display_Path);
5968                      Display_Path_Id   : Name_Id;
5969
5970                   begin
5971                      Name_Len := 0;
5972                      Add_Str_To_Name_Buffer (Path (Path'First .. Last_Path));
5973                      Path_Id := Name_Find;
5974                      Name_Len := 0;
5975                      Add_Str_To_Name_Buffer
5976                        (Display_Path
5977                           (Display_Path'First .. Last_Display_Path));
5978                      Display_Path_Id := Name_Find;
5979
5980                      if not Removed then
5981
5982                         --  As it is an existing directory, we add it to the
5983                         --  list of directories.
5984
5985                         String_Element_Table.Increment_Last
5986                           (In_Tree.String_Elements);
5987                         Element :=
5988                           (Value         => Path_Id,
5989                            Index         => 0,
5990                            Display_Value => Display_Path_Id,
5991                            Location      => No_Location,
5992                            Flag          => False,
5993                            Next          => Nil_String);
5994
5995                         if Last_Source_Dir = Nil_String then
5996
5997                            --  This is the first source directory
5998
5999                            Data.Source_Dirs := String_Element_Table.Last
6000                              (In_Tree.String_Elements);
6001
6002                         else
6003                            --  We already have source directories, link the
6004                            --  previous last to the new one.
6005
6006                            In_Tree.String_Elements.Table
6007                              (Last_Source_Dir).Next :=
6008                              String_Element_Table.Last
6009                                (In_Tree.String_Elements);
6010                         end if;
6011
6012                         --  And register this source directory as the new last
6013
6014                         Last_Source_Dir := String_Element_Table.Last
6015                           (In_Tree.String_Elements);
6016                         In_Tree.String_Elements.Table
6017                           (Last_Source_Dir) := Element;
6018
6019                      else
6020                         --  Remove source dir, if present
6021
6022                         List := Data.Source_Dirs;
6023                         Prev := Nil_String;
6024
6025                         --  Look for source dir in current list
6026
6027                         while List /= Nil_String loop
6028                            Element := In_Tree.String_Elements.Table (List);
6029                            exit when Element.Value = Path_Id;
6030                            Prev := List;
6031                            List := Element.Next;
6032                         end loop;
6033
6034                         if List /= Nil_String then
6035                            --  Source dir was found, remove it from the list
6036
6037                            if Prev = Nil_String then
6038                               Data.Source_Dirs :=
6039                                 In_Tree.String_Elements.Table (List).Next;
6040
6041                            else
6042                               In_Tree.String_Elements.Table (Prev).Next :=
6043                                 In_Tree.String_Elements.Table (List).Next;
6044                            end if;
6045                         end if;
6046                      end if;
6047                   end;
6048                end if;
6049             end;
6050          end if;
6051       end Find_Source_Dirs;
6052
6053    --  Start of processing for Get_Directories
6054
6055    begin
6056       if Current_Verbosity = High then
6057          Write_Line ("Starting to look for directories");
6058       end if;
6059
6060       --  Check the object directory
6061
6062       pragma Assert (Object_Dir.Kind = Single,
6063                      "Object_Dir is not a single string");
6064
6065       --  We set the object directory to its default
6066
6067       Data.Object_Directory   := Data.Directory;
6068
6069       if Object_Dir.Value /= Empty_String then
6070          Get_Name_String (Object_Dir.Value);
6071
6072          if Name_Len = 0 then
6073             Error_Msg
6074               (Project, In_Tree,
6075                "Object_Dir cannot be empty",
6076                Object_Dir.Location);
6077
6078          else
6079             --  We check that the specified object directory does exist
6080
6081             Locate_Directory
6082               (Project,
6083                In_Tree,
6084                File_Name_Type (Object_Dir.Value),
6085                Data.Directory.Display_Name,
6086                Data.Object_Directory.Name,
6087                Data.Object_Directory.Display_Name,
6088                Create   => "object",
6089                Location => Object_Dir.Location,
6090                Current_Dir => Current_Dir);
6091
6092             if Data.Object_Directory = No_Path_Information then
6093
6094                --  The object directory does not exist, report an error if the
6095                --  project is not externally built.
6096
6097                if not Data.Externally_Built then
6098                   Err_Vars.Error_Msg_File_1 :=
6099                     File_Name_Type (Object_Dir.Value);
6100                   Error_Msg
6101                     (Project, In_Tree,
6102                      "the object directory { cannot be found",
6103                      Data.Location);
6104                end if;
6105
6106                --  Do not keep a nil Object_Directory. Set it to the specified
6107                --  (relative or absolute) path. This is for the benefit of
6108                --  tools that recover from errors; for example, these tools
6109                --  could create the non existent directory.
6110
6111                Data.Object_Directory.Display_Name :=
6112                  Path_Name_Type (Object_Dir.Value);
6113
6114                if Osint.File_Names_Case_Sensitive then
6115                   Data.Object_Directory.Name :=
6116                     Path_Name_Type (Object_Dir.Value);
6117                else
6118                   Get_Name_String (Object_Dir.Value);
6119                   Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
6120                   Data.Object_Directory.Name := Name_Find;
6121                end if;
6122             end if;
6123          end if;
6124
6125       elsif Subdirs /= null then
6126          Name_Len := 1;
6127          Name_Buffer (1) := '.';
6128          Locate_Directory
6129            (Project,
6130             In_Tree,
6131             Name_Find,
6132             Data.Directory.Name,
6133             Data.Object_Directory.Name,
6134             Data.Object_Directory.Display_Name,
6135             Create      => "object",
6136             Location    => Object_Dir.Location,
6137             Current_Dir => Current_Dir);
6138       end if;
6139
6140       if Current_Verbosity = High then
6141          if Data.Object_Directory = No_Path_Information then
6142             Write_Line ("No object directory");
6143          else
6144             Write_Str ("Object directory: """);
6145             Write_Str (Get_Name_String (Data.Object_Directory.Display_Name));
6146             Write_Line ("""");
6147          end if;
6148       end if;
6149
6150       --  Check the exec directory
6151
6152       pragma Assert (Exec_Dir.Kind = Single,
6153                      "Exec_Dir is not a single string");
6154
6155       --  We set the object directory to its default
6156
6157       Data.Exec_Directory   := Data.Object_Directory;
6158
6159       if Exec_Dir.Value /= Empty_String then
6160          Get_Name_String (Exec_Dir.Value);
6161
6162          if Name_Len = 0 then
6163             Error_Msg
6164               (Project, In_Tree,
6165                "Exec_Dir cannot be empty",
6166                Exec_Dir.Location);
6167
6168          else
6169             --  We check that the specified exec directory does exist
6170
6171             Locate_Directory
6172               (Project,
6173                In_Tree,
6174                File_Name_Type (Exec_Dir.Value),
6175                Data.Directory.Name,
6176                Data.Exec_Directory.Name,
6177                Data.Exec_Directory.Display_Name,
6178                Create   => "exec",
6179                Location => Exec_Dir.Location,
6180                Current_Dir => Current_Dir);
6181
6182             if Data.Exec_Directory = No_Path_Information then
6183                Err_Vars.Error_Msg_File_1 := File_Name_Type (Exec_Dir.Value);
6184                Error_Msg
6185                  (Project, In_Tree,
6186                   "the exec directory { cannot be found",
6187                   Data.Location);
6188             end if;
6189          end if;
6190       end if;
6191
6192       if Current_Verbosity = High then
6193          if Data.Exec_Directory = No_Path_Information then
6194             Write_Line ("No exec directory");
6195          else
6196             Write_Str ("Exec directory: """);
6197             Write_Str (Get_Name_String (Data.Exec_Directory.Display_Name));
6198             Write_Line ("""");
6199          end if;
6200       end if;
6201
6202       --  Look for the source directories
6203
6204       if Current_Verbosity = High then
6205          Write_Line ("Starting to look for source directories");
6206       end if;
6207
6208       pragma Assert (Source_Dirs.Kind = List, "Source_Dirs is not a list");
6209
6210       if (not Source_Files.Default) and then
6211         Source_Files.Values = Nil_String
6212       then
6213          Data.Source_Dirs := Nil_String;
6214
6215          if Data.Qualifier = Standard then
6216             Error_Msg
6217               (Project,
6218                In_Tree,
6219                "a standard project cannot have no sources",
6220                Source_Files.Location);
6221          end if;
6222
6223          if Data.Extends = No_Project
6224            and then Data.Object_Directory = Data.Directory
6225          then
6226             Data.Object_Directory := No_Path_Information;
6227          end if;
6228
6229       elsif Source_Dirs.Default then
6230
6231          --  No Source_Dirs specified: the single source directory is the one
6232          --  containing the project file
6233
6234          String_Element_Table.Increment_Last
6235            (In_Tree.String_Elements);
6236          Data.Source_Dirs := String_Element_Table.Last
6237            (In_Tree.String_Elements);
6238          In_Tree.String_Elements.Table (Data.Source_Dirs) :=
6239            (Value         => Name_Id (Data.Directory.Name),
6240             Display_Value => Name_Id (Data.Directory.Display_Name),
6241             Location      => No_Location,
6242             Flag          => False,
6243             Next          => Nil_String,
6244             Index         => 0);
6245
6246          if Current_Verbosity = High then
6247             Write_Line ("Single source directory:");
6248             Write_Str ("    """);
6249             Write_Str (Get_Name_String (Data.Directory.Display_Name));
6250             Write_Line ("""");
6251          end if;
6252
6253       elsif Source_Dirs.Values = Nil_String then
6254          if Data.Qualifier = Standard then
6255             Error_Msg
6256               (Project,
6257                In_Tree,
6258                "a standard project cannot have no source directories",
6259                Source_Dirs.Location);
6260          end if;
6261
6262          --  If Source_Dirs is an empty string list, this means that this
6263          --  project contains no source. For projects that don't extend other
6264          --  projects, this also means that there is no need for an object
6265          --  directory, if not specified.
6266
6267          if Data.Extends = No_Project
6268            and then  Data.Object_Directory = Data.Directory
6269          then
6270             Data.Object_Directory := No_Path_Information;
6271          end if;
6272
6273          Data.Source_Dirs           := Nil_String;
6274
6275       else
6276          declare
6277             Source_Dir : String_List_Id;
6278             Element    : String_Element;
6279
6280          begin
6281             --  Process the source directories for each element of the list
6282
6283             Source_Dir := Source_Dirs.Values;
6284             while Source_Dir /= Nil_String loop
6285                Element :=
6286                  In_Tree.String_Elements.Table (Source_Dir);
6287                Find_Source_Dirs
6288                  (File_Name_Type (Element.Value), Element.Location);
6289                Source_Dir := Element.Next;
6290             end loop;
6291          end;
6292       end if;
6293
6294       if not Excluded_Source_Dirs.Default
6295         and then Excluded_Source_Dirs.Values /= Nil_String
6296       then
6297          declare
6298             Source_Dir : String_List_Id;
6299             Element    : String_Element;
6300
6301          begin
6302             --  Process the source directories for each element of the list
6303
6304             Source_Dir := Excluded_Source_Dirs.Values;
6305             while Source_Dir /= Nil_String loop
6306                Element :=
6307                  In_Tree.String_Elements.Table (Source_Dir);
6308                Find_Source_Dirs
6309                  (File_Name_Type (Element.Value),
6310                   Element.Location,
6311                   Removed => True);
6312                Source_Dir := Element.Next;
6313             end loop;
6314          end;
6315       end if;
6316
6317       if Current_Verbosity = High then
6318          Write_Line ("Putting source directories in canonical cases");
6319       end if;
6320
6321       declare
6322          Current : String_List_Id := Data.Source_Dirs;
6323          Element : String_Element;
6324
6325       begin
6326          while Current /= Nil_String loop
6327             Element := In_Tree.String_Elements.Table (Current);
6328             if Element.Value /= No_Name then
6329                if not Osint.File_Names_Case_Sensitive then
6330                   Get_Name_String (Element.Value);
6331                   Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
6332                   Element.Value := Name_Find;
6333                end if;
6334
6335                In_Tree.String_Elements.Table (Current) := Element;
6336             end if;
6337
6338             Current := Element.Next;
6339          end loop;
6340       end;
6341
6342    end Get_Directories;
6343
6344    ---------------
6345    -- Get_Mains --
6346    ---------------
6347
6348    procedure Get_Mains
6349      (Project : Project_Id;
6350       In_Tree : Project_Tree_Ref;
6351       Data    : in out Project_Data)
6352    is
6353       Mains : constant Variable_Value :=
6354                 Prj.Util.Value_Of (Name_Main, Data.Decl.Attributes, In_Tree);
6355
6356    begin
6357       Data.Mains := Mains.Values;
6358
6359       --  If no Mains were specified, and if we are an extending project,
6360       --  inherit the Mains from the project we are extending.
6361
6362       if Mains.Default then
6363          if not Data.Library and then Data.Extends /= No_Project then
6364             Data.Mains :=
6365               In_Tree.Projects.Table (Data.Extends).Mains;
6366          end if;
6367
6368       --  In a library project file, Main cannot be specified
6369
6370       elsif Data.Library then
6371          Error_Msg
6372            (Project, In_Tree,
6373             "a library project file cannot have Main specified",
6374             Mains.Location);
6375       end if;
6376    end Get_Mains;
6377
6378    ---------------------------
6379    -- Get_Sources_From_File --
6380    ---------------------------
6381
6382    procedure Get_Sources_From_File
6383      (Path     : String;
6384       Location : Source_Ptr;
6385       Project  : Project_Id;
6386       In_Tree  : Project_Tree_Ref)
6387    is
6388       File        : Prj.Util.Text_File;
6389       Line        : String (1 .. 250);
6390       Last        : Natural;
6391       Source_Name : File_Name_Type;
6392       Name_Loc    : Name_Location;
6393
6394    begin
6395       if Get_Mode = Ada_Only then
6396          Source_Names.Reset;
6397       end if;
6398
6399       if Current_Verbosity = High then
6400          Write_Str  ("Opening """);
6401          Write_Str  (Path);
6402          Write_Line (""".");
6403       end if;
6404
6405       --  Open the file
6406
6407       Prj.Util.Open (File, Path);
6408
6409       if not Prj.Util.Is_Valid (File) then
6410          Error_Msg (Project, In_Tree, "file does not exist", Location);
6411       else
6412          --  Read the lines one by one
6413
6414          while not Prj.Util.End_Of_File (File) loop
6415             Prj.Util.Get_Line (File, Line, Last);
6416
6417             --  A non empty, non comment line should contain a file name
6418
6419             if Last /= 0
6420               and then (Last = 1 or else Line (1 .. 2) /= "--")
6421             then
6422                Name_Len := Last;
6423                Name_Buffer (1 .. Name_Len) := Line (1 .. Last);
6424                Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
6425                Source_Name := Name_Find;
6426
6427                --  Check that there is no directory information
6428
6429                for J in 1 .. Last loop
6430                   if Line (J) = '/' or else Line (J) = Directory_Separator then
6431                      Error_Msg_File_1 := Source_Name;
6432                      Error_Msg
6433                        (Project,
6434                         In_Tree,
6435                         "file name cannot include directory information ({)",
6436                         Location);
6437                      exit;
6438                   end if;
6439                end loop;
6440
6441                Name_Loc := Source_Names.Get (Source_Name);
6442
6443                if Name_Loc = No_Name_Location then
6444                   Name_Loc :=
6445                     (Name     => Source_Name,
6446                      Location => Location,
6447                      Source   => No_Source,
6448                      Except   => False,
6449                      Found    => False);
6450                end if;
6451
6452                Source_Names.Set (Source_Name, Name_Loc);
6453             end if;
6454          end loop;
6455
6456          Prj.Util.Close (File);
6457
6458       end if;
6459    end Get_Sources_From_File;
6460
6461    --------------
6462    -- Get_Unit --
6463    --------------
6464
6465    procedure Get_Unit
6466      (In_Tree             : Project_Tree_Ref;
6467       Canonical_File_Name : File_Name_Type;
6468       Naming              : Naming_Data;
6469       Exception_Id        : out Ada_Naming_Exception_Id;
6470       Unit_Name           : out Name_Id;
6471       Unit_Kind           : out Spec_Or_Body;
6472       Needs_Pragma        : out Boolean)
6473    is
6474       Info_Id  : Ada_Naming_Exception_Id :=
6475                    Ada_Naming_Exceptions.Get (Canonical_File_Name);
6476       VMS_Name : File_Name_Type;
6477
6478    begin
6479       if Info_Id = No_Ada_Naming_Exception then
6480          if Hostparm.OpenVMS then
6481             VMS_Name := Canonical_File_Name;
6482             Get_Name_String (VMS_Name);
6483
6484             if Name_Buffer (Name_Len) = '.' then
6485                Name_Len := Name_Len - 1;
6486                VMS_Name := Name_Find;
6487             end if;
6488
6489             Info_Id := Ada_Naming_Exceptions.Get (VMS_Name);
6490          end if;
6491
6492       end if;
6493
6494       if Info_Id /= No_Ada_Naming_Exception then
6495          Exception_Id := Info_Id;
6496          Unit_Name := No_Name;
6497          Unit_Kind := Specification;
6498          Needs_Pragma := True;
6499          return;
6500       end if;
6501
6502       Needs_Pragma := False;
6503       Exception_Id := No_Ada_Naming_Exception;
6504
6505       Get_Name_String (Canonical_File_Name);
6506
6507       --  How about some comments and a name for this declare block ???
6508       --  In fact the whole code below needs more comments ???
6509
6510       declare
6511          File          : String := Name_Buffer (1 .. Name_Len);
6512          First         : constant Positive := File'First;
6513          Last          : Natural           := File'Last;
6514          Standard_GNAT : Boolean;
6515          Spec          : constant File_Name_Type :=
6516                              Spec_Suffix_Id_Of (In_Tree, Name_Ada, Naming);
6517          Body_Suff     : constant File_Name_Type :=
6518                              Body_Suffix_Id_Of (In_Tree, Name_Ada, Naming);
6519
6520       begin
6521          Standard_GNAT := Spec = Default_Ada_Spec_Suffix
6522             and then Body_Suff = Default_Ada_Body_Suffix;
6523
6524          declare
6525             Spec_Suffix : constant String := Get_Name_String (Spec);
6526             Body_Suffix : constant String := Get_Name_String (Body_Suff);
6527             Sep_Suffix  : constant String :=
6528                             Get_Name_String (Naming.Separate_Suffix);
6529
6530             May_Be_Spec : Boolean;
6531             May_Be_Body : Boolean;
6532             May_Be_Sep  : Boolean;
6533
6534          begin
6535             May_Be_Spec :=
6536               File'Length > Spec_Suffix'Length
6537               and then
6538               File (Last - Spec_Suffix'Length + 1 .. Last) = Spec_Suffix;
6539
6540             May_Be_Body :=
6541               File'Length > Body_Suffix'Length
6542               and then
6543               File (Last - Body_Suffix'Length + 1 .. Last) = Body_Suffix;
6544
6545             May_Be_Sep :=
6546               File'Length > Sep_Suffix'Length
6547               and then
6548               File (Last - Sep_Suffix'Length + 1 .. Last) = Sep_Suffix;
6549
6550             --  If two May_Be_ booleans are True, always choose the longer one
6551
6552             if May_Be_Spec then
6553                if May_Be_Body and then
6554                  Spec_Suffix'Length < Body_Suffix'Length
6555                then
6556                   Unit_Kind := Body_Part;
6557
6558                   if May_Be_Sep and then
6559                     Body_Suffix'Length < Sep_Suffix'Length
6560                   then
6561                      Last := Last - Sep_Suffix'Length;
6562                      May_Be_Body := False;
6563
6564                   else
6565                      Last := Last - Body_Suffix'Length;
6566                      May_Be_Sep := False;
6567                   end if;
6568
6569                elsif May_Be_Sep and then
6570                      Spec_Suffix'Length < Sep_Suffix'Length
6571                then
6572                   Unit_Kind := Body_Part;
6573                   Last := Last - Sep_Suffix'Length;
6574
6575                else
6576                   Unit_Kind := Specification;
6577                   Last := Last - Spec_Suffix'Length;
6578                end if;
6579
6580             elsif May_Be_Body then
6581                Unit_Kind := Body_Part;
6582
6583                if May_Be_Sep and then
6584                   Body_Suffix'Length < Sep_Suffix'Length
6585                then
6586                   Last := Last - Sep_Suffix'Length;
6587                   May_Be_Body := False;
6588                else
6589                   Last := Last - Body_Suffix'Length;
6590                   May_Be_Sep := False;
6591                end if;
6592
6593             elsif May_Be_Sep then
6594                Unit_Kind := Body_Part;
6595                Last := Last - Sep_Suffix'Length;
6596
6597             else
6598                Last := 0;
6599             end if;
6600
6601             if Last = 0 then
6602
6603                --  This is not a source file
6604
6605                Unit_Name := No_Name;
6606                Unit_Kind := Specification;
6607
6608                if Current_Verbosity = High then
6609                   Write_Line ("   Not a valid file name.");
6610                end if;
6611
6612                return;
6613
6614             elsif Current_Verbosity = High then
6615                case Unit_Kind is
6616                when Specification =>
6617                   Write_Str  ("   Specification: ");
6618                   Write_Line (File (First .. Last + Spec_Suffix'Length));
6619
6620                when Body_Part =>
6621                   if May_Be_Body then
6622                      Write_Str  ("   Body: ");
6623                      Write_Line (File (First .. Last + Body_Suffix'Length));
6624
6625                   else
6626                      Write_Str  ("   Separate: ");
6627                      Write_Line (File (First .. Last + Sep_Suffix'Length));
6628                   end if;
6629                end case;
6630             end if;
6631          end;
6632
6633          Get_Name_String (Naming.Dot_Replacement);
6634          Standard_GNAT :=
6635            Standard_GNAT and then Name_Buffer (1 .. Name_Len) = "-";
6636
6637          if Name_Buffer (1 .. Name_Len) /= "." then
6638
6639             --  If Dot_Replacement is not a single dot, then there should not
6640             --  be any dot in the name.
6641
6642             for Index in First .. Last loop
6643                if File (Index) = '.' then
6644                   if Current_Verbosity = High then
6645                      Write_Line
6646                        ("   Not a valid file name (some dot not replaced).");
6647                   end if;
6648
6649                   Unit_Name := No_Name;
6650                   return;
6651
6652                end if;
6653             end loop;
6654
6655             --  Replace the substring Dot_Replacement with dots
6656
6657             declare
6658                Index : Positive := First;
6659
6660             begin
6661                while Index <= Last - Name_Len + 1 loop
6662
6663                   if File (Index .. Index + Name_Len - 1) =
6664                     Name_Buffer (1 .. Name_Len)
6665                   then
6666                      File (Index) := '.';
6667
6668                      if Name_Len > 1 and then Index < Last then
6669                         File (Index + 1 .. Last - Name_Len + 1) :=
6670                           File (Index + Name_Len .. Last);
6671                      end if;
6672
6673                      Last := Last - Name_Len + 1;
6674                   end if;
6675
6676                   Index := Index + 1;
6677                end loop;
6678             end;
6679          end if;
6680
6681          --  Check if the casing is right
6682
6683          declare
6684             Src      : String := File (First .. Last);
6685             Src_Last : Positive := Last;
6686
6687          begin
6688             case Naming.Casing is
6689                when All_Lower_Case =>
6690                   Fixed.Translate
6691                     (Source  => Src,
6692                      Mapping => Lower_Case_Map);
6693
6694                when All_Upper_Case =>
6695                   Fixed.Translate
6696                     (Source  => Src,
6697                      Mapping => Upper_Case_Map);
6698
6699                when Mixed_Case | Unknown =>
6700                   null;
6701             end case;
6702
6703             if Src /= File (First .. Last) then
6704                if Current_Verbosity = High then
6705                   Write_Line ("   Not a valid file name (casing).");
6706                end if;
6707
6708                Unit_Name := No_Name;
6709                return;
6710             end if;
6711
6712             --  We put the name in lower case
6713
6714             Fixed.Translate
6715               (Source  => Src,
6716                Mapping => Lower_Case_Map);
6717
6718             --  In the standard GNAT naming scheme, check for special cases:
6719             --  children or separates of A, G, I or S, and run time sources.
6720
6721             if Standard_GNAT and then Src'Length >= 3 then
6722                declare
6723                   S1 : constant Character := Src (Src'First);
6724                   S2 : constant Character := Src (Src'First + 1);
6725                   S3 : constant Character := Src (Src'First + 2);
6726
6727                begin
6728                   if S1 = 'a' or else
6729                      S1 = 'g' or else
6730                      S1 = 'i' or else
6731                      S1 = 's'
6732                   then
6733                      --  Children or separates of packages A, G, I or S. These
6734                      --  names are x__ ... or x~... (where x is a, g, i, or s).
6735                      --  Both versions (x__... and x~...) are allowed in all
6736                      --  platforms, because it is not possible to know the
6737                      --  platform before processing of the project files.
6738
6739                      if S2 = '_' and then S3 = '_' then
6740                         Src (Src'First + 1) := '.';
6741                         Src_Last := Src_Last - 1;
6742                         Src (Src'First + 2 .. Src_Last) :=
6743                           Src (Src'First + 3 .. Src_Last + 1);
6744
6745                      elsif S2 = '~' then
6746                         Src (Src'First + 1) := '.';
6747
6748                      --  If it is potentially a run time source, disable
6749                      --  filling of the mapping file to avoid warnings.
6750
6751                      elsif S2 = '.' then
6752                         Set_Mapping_File_Initial_State_To_Empty;
6753                      end if;
6754                   end if;
6755                end;
6756             end if;
6757
6758             if Current_Verbosity = High then
6759                Write_Str  ("      ");
6760                Write_Line (Src (Src'First .. Src_Last));
6761             end if;
6762
6763             --  Now, we check if this name is a valid unit name
6764
6765             Check_Ada_Name
6766               (Name => Src (Src'First .. Src_Last), Unit => Unit_Name);
6767          end;
6768
6769       end;
6770    end Get_Unit;
6771
6772    ----------
6773    -- Hash --
6774    ----------
6775
6776    function Hash (Unit : Unit_Info) return Header_Num is
6777    begin
6778       return Header_Num (Unit.Unit mod 2048);
6779    end Hash;
6780
6781    -----------------------
6782    -- Is_Illegal_Suffix --
6783    -----------------------
6784
6785    function Is_Illegal_Suffix
6786      (Suffix                          : String;
6787       Dot_Replacement_Is_A_Single_Dot : Boolean) return Boolean
6788    is
6789    begin
6790       if Suffix'Length = 0 or else Index (Suffix, ".") = 0 then
6791          return True;
6792       end if;
6793
6794       --  If dot replacement is a single dot, and first character of suffix is
6795       --  also a dot
6796
6797       if Dot_Replacement_Is_A_Single_Dot
6798         and then Suffix (Suffix'First) = '.'
6799       then
6800          for Index in Suffix'First + 1 .. Suffix'Last loop
6801
6802             --  If there is another dot
6803
6804             if Suffix (Index) = '.' then
6805
6806                --  It is illegal to have a letter following the initial dot
6807
6808                return Is_Letter (Suffix (Suffix'First + 1));
6809             end if;
6810          end loop;
6811       end if;
6812
6813       --  Everything is OK
6814
6815       return False;
6816    end Is_Illegal_Suffix;
6817
6818    ----------------------
6819    -- Locate_Directory --
6820    ----------------------
6821
6822    procedure Locate_Directory
6823      (Project     : Project_Id;
6824       In_Tree     : Project_Tree_Ref;
6825       Name        : File_Name_Type;
6826       Parent      : Path_Name_Type;
6827       Dir         : out Path_Name_Type;
6828       Display     : out Path_Name_Type;
6829       Create      : String := "";
6830       Current_Dir : String;
6831       Location    : Source_Ptr := No_Location)
6832    is
6833       The_Parent      : constant String :=
6834                           Get_Name_String (Parent) & Directory_Separator;
6835
6836       The_Parent_Last : constant Natural :=
6837                           Compute_Directory_Last (The_Parent);
6838
6839       Full_Name       : File_Name_Type;
6840
6841       The_Name        : File_Name_Type;
6842
6843    begin
6844       Get_Name_String (Name);
6845
6846       --  Add Subdirs.all if it is a directory that may be created and
6847       --  Subdirs is not null;
6848
6849       if Create /= "" and then Subdirs /= null then
6850          if Name_Buffer (Name_Len) /= Directory_Separator then
6851             Add_Char_To_Name_Buffer (Directory_Separator);
6852          end if;
6853
6854          Add_Str_To_Name_Buffer (Subdirs.all);
6855       end if;
6856
6857       --  Convert '/' to directory separator (for Windows)
6858
6859       for J in 1 .. Name_Len loop
6860          if Name_Buffer (J) = '/' then
6861             Name_Buffer (J) := Directory_Separator;
6862          end if;
6863       end loop;
6864
6865       The_Name := Name_Find;
6866
6867       if Current_Verbosity = High then
6868          Write_Str ("Locate_Directory (""");
6869          Write_Str (Get_Name_String (The_Name));
6870          Write_Str (""", """);
6871          Write_Str (The_Parent);
6872          Write_Line (""")");
6873       end if;
6874
6875       Dir     := No_Path;
6876       Display := No_Path;
6877
6878       if Is_Absolute_Path (Get_Name_String (The_Name)) then
6879          Full_Name := The_Name;
6880
6881       else
6882          Name_Len := 0;
6883          Add_Str_To_Name_Buffer
6884            (The_Parent (The_Parent'First .. The_Parent_Last));
6885          Add_Str_To_Name_Buffer (Get_Name_String (The_Name));
6886          Full_Name := Name_Find;
6887       end if;
6888
6889       declare
6890          Full_Path_Name : constant String := Get_Name_String (Full_Name);
6891
6892       begin
6893          if (Setup_Projects or else Subdirs /= null)
6894            and then Create'Length > 0
6895            and then not Is_Directory (Full_Path_Name)
6896          then
6897             begin
6898                Create_Path (Full_Path_Name);
6899
6900                if not Quiet_Output then
6901                   Write_Str (Create);
6902                   Write_Str (" directory """);
6903                   Write_Str (Full_Path_Name);
6904                   Write_Line (""" created");
6905                end if;
6906
6907             exception
6908                when Use_Error =>
6909                   Error_Msg
6910                     (Project, In_Tree,
6911                      "could not create " & Create &
6912                      " directory " & Full_Path_Name,
6913                      Location);
6914             end;
6915          end if;
6916
6917          if Is_Directory (Full_Path_Name) then
6918             declare
6919                Normed : constant String :=
6920                           Normalize_Pathname
6921                             (Full_Path_Name,
6922                              Directory      => Current_Dir,
6923                              Resolve_Links  => False,
6924                              Case_Sensitive => True);
6925
6926                Canonical_Path : constant String :=
6927                                   Normalize_Pathname
6928                                     (Normed,
6929                                      Directory      => Current_Dir,
6930                                      Resolve_Links  =>
6931                                         Opt.Follow_Links_For_Dirs,
6932                                      Case_Sensitive => False);
6933
6934             begin
6935                Name_Len := Normed'Length;
6936                Name_Buffer (1 .. Name_Len) := Normed;
6937                Display := Name_Find;
6938
6939                Name_Len := Canonical_Path'Length;
6940                Name_Buffer (1 .. Name_Len) := Canonical_Path;
6941                Dir := Name_Find;
6942             end;
6943          end if;
6944       end;
6945    end Locate_Directory;
6946
6947    ---------------------------
6948    -- Find_Excluded_Sources --
6949    ---------------------------
6950
6951    procedure Find_Excluded_Sources
6952      (Project : Project_Id;
6953       In_Tree : Project_Tree_Ref;
6954       Data    : Project_Data)
6955    is
6956       Excluded_Sources : Variable_Value;
6957
6958       Excluded_Source_List_File : Variable_Value;
6959
6960       Current          : String_List_Id;
6961
6962       Element : String_Element;
6963
6964       Location : Source_Ptr;
6965
6966       Name : File_Name_Type;
6967
6968       File : Prj.Util.Text_File;
6969       Line : String (1 .. 300);
6970       Last : Natural;
6971
6972       Locally_Removed : Boolean := False;
6973    begin
6974       Excluded_Source_List_File :=
6975         Util.Value_Of
6976           (Name_Excluded_Source_List_File, Data.Decl.Attributes, In_Tree);
6977
6978       Excluded_Sources :=
6979         Util.Value_Of
6980           (Name_Excluded_Source_Files, Data.Decl.Attributes, In_Tree);
6981
6982       --  If Excluded_Source_Files is not declared, check
6983       --  Locally_Removed_Files.
6984
6985       if Excluded_Sources.Default then
6986          Locally_Removed := True;
6987          Excluded_Sources :=
6988            Util.Value_Of
6989              (Name_Locally_Removed_Files, Data.Decl.Attributes, In_Tree);
6990       end if;
6991
6992       Excluded_Sources_Htable.Reset;
6993
6994       --  If there are excluded sources, put them in the table
6995
6996       if not Excluded_Sources.Default then
6997          if not Excluded_Source_List_File.Default then
6998             if Locally_Removed then
6999                Error_Msg
7000                  (Project, In_Tree,
7001                   "?both attributes Locally_Removed_Files and " &
7002                   "Excluded_Source_List_File are present",
7003                   Excluded_Source_List_File.Location);
7004             else
7005                Error_Msg
7006                  (Project, In_Tree,
7007                   "?both attributes Excluded_Source_Files and " &
7008                   "Excluded_Source_List_File are present",
7009                   Excluded_Source_List_File.Location);
7010             end if;
7011          end if;
7012
7013          Current := Excluded_Sources.Values;
7014          while Current /= Nil_String loop
7015             Element := In_Tree.String_Elements.Table (Current);
7016
7017             if Osint.File_Names_Case_Sensitive then
7018                Name := File_Name_Type (Element.Value);
7019             else
7020                Get_Name_String (Element.Value);
7021                Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
7022                Name := Name_Find;
7023             end if;
7024
7025             --  If the element has no location, then use the location
7026             --  of Excluded_Sources to report possible errors.
7027
7028             if Element.Location = No_Location then
7029                Location := Excluded_Sources.Location;
7030             else
7031                Location := Element.Location;
7032             end if;
7033
7034             Excluded_Sources_Htable.Set (Name, (Name, False, Location));
7035             Current := Element.Next;
7036          end loop;
7037
7038       elsif not Excluded_Source_List_File.Default then
7039          Location := Excluded_Source_List_File.Location;
7040
7041          declare
7042             Source_File_Path_Name : constant String :=
7043                                       Path_Name_Of
7044                                         (File_Name_Type
7045                                            (Excluded_Source_List_File.Value),
7046                                          Data.Directory.Name);
7047
7048          begin
7049             if Source_File_Path_Name'Length = 0 then
7050                Err_Vars.Error_Msg_File_1 :=
7051                  File_Name_Type (Excluded_Source_List_File.Value);
7052                Error_Msg
7053                  (Project, In_Tree,
7054                   "file with excluded sources { does not exist",
7055                   Excluded_Source_List_File.Location);
7056
7057             else
7058                --  Open the file
7059
7060                Prj.Util.Open (File, Source_File_Path_Name);
7061
7062                if not Prj.Util.Is_Valid (File) then
7063                   Error_Msg
7064                     (Project, In_Tree, "file does not exist", Location);
7065                else
7066                   --  Read the lines one by one
7067
7068                   while not Prj.Util.End_Of_File (File) loop
7069                      Prj.Util.Get_Line (File, Line, Last);
7070
7071                      --  A non empty, non comment line should contain a file
7072                      --  name
7073
7074                      if Last /= 0
7075                        and then (Last = 1 or else Line (1 .. 2) /= "--")
7076                      then
7077                         Name_Len := Last;
7078                         Name_Buffer (1 .. Name_Len) := Line (1 .. Last);
7079                         Canonical_Case_File_Name
7080                           (Name_Buffer (1 .. Name_Len));
7081                         Name := Name_Find;
7082
7083                         --  Check that there is no directory information
7084
7085                         for J in 1 .. Last loop
7086                            if Line (J) = '/'
7087                              or else Line (J) = Directory_Separator
7088                            then
7089                               Error_Msg_File_1 := Name;
7090                               Error_Msg
7091                                 (Project,
7092                                  In_Tree,
7093                                  "file name cannot include " &
7094                                  "directory information ({)",
7095                                  Location);
7096                               exit;
7097                            end if;
7098                         end loop;
7099
7100                         Excluded_Sources_Htable.Set
7101                           (Name, (Name, False, Location));
7102                      end if;
7103                   end loop;
7104
7105                   Prj.Util.Close (File);
7106                end if;
7107             end if;
7108          end;
7109       end if;
7110    end Find_Excluded_Sources;
7111
7112    ---------------------------
7113    -- Find_Explicit_Sources --
7114    ---------------------------
7115
7116    procedure Find_Explicit_Sources
7117      (Current_Dir : String;
7118       Project     : Project_Id;
7119       In_Tree     : Project_Tree_Ref;
7120       Data        : in out Project_Data)
7121    is
7122       Sources          : constant Variable_Value :=
7123                            Util.Value_Of
7124                              (Name_Source_Files,
7125                               Data.Decl.Attributes,
7126                               In_Tree);
7127       Source_List_File : constant Variable_Value :=
7128                            Util.Value_Of
7129                              (Name_Source_List_File,
7130                               Data.Decl.Attributes,
7131                               In_Tree);
7132       Name_Loc         : Name_Location;
7133
7134    begin
7135       pragma Assert (Sources.Kind = List, "Source_Files is not a list");
7136       pragma Assert
7137         (Source_List_File.Kind = Single,
7138          "Source_List_File is not a single string");
7139
7140       --  If the user has specified a Sources attribute
7141
7142       if not Sources.Default then
7143          if not Source_List_File.Default then
7144             Error_Msg
7145               (Project, In_Tree,
7146                "?both attributes source_files and " &
7147                "source_list_file are present",
7148                Source_List_File.Location);
7149          end if;
7150
7151          --  Sources is a list of file names
7152
7153          declare
7154             Current  : String_List_Id := Sources.Values;
7155             Element  : String_Element;
7156             Location : Source_Ptr;
7157             Name     : File_Name_Type;
7158
7159          begin
7160             if Get_Mode = Ada_Only then
7161                Data.Ada_Sources_Present := Current /= Nil_String;
7162             end if;
7163
7164             if Get_Mode = Multi_Language then
7165                if Current = Nil_String then
7166                   Data.First_Language_Processing := No_Language_Index;
7167
7168                   --  This project contains no source. For projects that
7169                   --  don't extend other projects, this also means that
7170                   --  there is no need for an object directory, if not
7171                   --  specified.
7172
7173                   if Data.Extends = No_Project
7174                     and then Data.Object_Directory = Data.Directory
7175                   then
7176                      Data.Object_Directory := No_Path_Information;
7177                   end if;
7178                end if;
7179             end if;
7180
7181             while Current /= Nil_String loop
7182                Element := In_Tree.String_Elements.Table (Current);
7183                Get_Name_String (Element.Value);
7184
7185                if Osint.File_Names_Case_Sensitive then
7186                   Name := File_Name_Type (Element.Value);
7187                else
7188                   Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
7189                   Name := Name_Find;
7190                end if;
7191
7192                --  If the element has no location, then use the
7193                --  location of Sources to report possible errors.
7194
7195                if Element.Location = No_Location then
7196                   Location := Sources.Location;
7197                else
7198                   Location := Element.Location;
7199                end if;
7200
7201                --  Check that there is no directory information
7202
7203                for J in 1 .. Name_Len loop
7204                   if Name_Buffer (J) = '/'
7205                     or else Name_Buffer (J) = Directory_Separator
7206                   then
7207                      Error_Msg_File_1 := Name;
7208                      Error_Msg
7209                        (Project,
7210                         In_Tree,
7211                         "file name cannot include directory " &
7212                         "information ({)",
7213                         Location);
7214                      exit;
7215                   end if;
7216                end loop;
7217
7218                --  In Multi_Language mode, check whether the file is
7219                --  already there: the same file name may be in the list; if
7220                --  the source is missing, the error will be on the first
7221                --  mention of the source file name.
7222
7223                case Get_Mode is
7224                   when Ada_Only =>
7225                      Name_Loc := No_Name_Location;
7226                   when Multi_Language =>
7227                      Name_Loc := Source_Names.Get (Name);
7228                end case;
7229
7230                if Name_Loc = No_Name_Location then
7231                   Name_Loc :=
7232                     (Name     => Name,
7233                      Location => Location,
7234                      Source   => No_Source,
7235                      Except   => False,
7236                      Found    => False);
7237                   Source_Names.Set (Name, Name_Loc);
7238                end if;
7239
7240                Current := Element.Next;
7241             end loop;
7242
7243             if Get_Mode = Ada_Only then
7244                Get_Path_Names_And_Record_Ada_Sources
7245                  (Project, In_Tree, Data, Current_Dir);
7246             end if;
7247          end;
7248
7249          --  If we have no Source_Files attribute, check the Source_List_File
7250          --  attribute
7251
7252       elsif not Source_List_File.Default then
7253
7254          --  Source_List_File is the name of the file
7255          --  that contains the source file names
7256
7257          declare
7258             Source_File_Path_Name : constant String :=
7259               Path_Name_Of
7260                 (File_Name_Type (Source_List_File.Value), Data.Directory.Name);
7261
7262          begin
7263             if Source_File_Path_Name'Length = 0 then
7264                Err_Vars.Error_Msg_File_1 :=
7265                  File_Name_Type (Source_List_File.Value);
7266                Error_Msg
7267                  (Project, In_Tree,
7268                   "file with sources { does not exist",
7269                   Source_List_File.Location);
7270
7271             else
7272                Get_Sources_From_File
7273                  (Source_File_Path_Name, Source_List_File.Location,
7274                   Project, In_Tree);
7275
7276                if Get_Mode = Ada_Only then
7277                   --  Look in the source directories to find those sources
7278
7279                   Get_Path_Names_And_Record_Ada_Sources
7280                     (Project, In_Tree, Data, Current_Dir);
7281                end if;
7282             end if;
7283          end;
7284
7285       else
7286          --  Neither Source_Files nor Source_List_File has been
7287          --  specified. Find all the files that satisfy the naming
7288          --  scheme in all the source directories.
7289
7290          if Get_Mode = Ada_Only then
7291             Find_Ada_Sources (Project, In_Tree, Data, Current_Dir);
7292          end if;
7293       end if;
7294
7295       if Get_Mode = Multi_Language then
7296          Search_Directories
7297            (Project, In_Tree, Data,
7298             For_All_Sources =>
7299               Sources.Default and then Source_List_File.Default);
7300
7301          --  Check if all exceptions have been found.
7302          --  For Ada, it is an error if an exception is not found.
7303          --  For other language, the source is simply removed.
7304
7305          declare
7306             Source   : Source_Id;
7307             Src_Data : Source_Data;
7308
7309          begin
7310             Source := Data.First_Source;
7311             while Source /= No_Source loop
7312                Src_Data := In_Tree.Sources.Table (Source);
7313
7314                if Src_Data.Naming_Exception
7315                  and then Src_Data.Path = No_Path_Information
7316                then
7317                   if Src_Data.Unit /= No_Name then
7318                      Error_Msg_Name_1 := Name_Id (Src_Data.Display_File);
7319                      Error_Msg_Name_2 := Name_Id (Src_Data.Unit);
7320                      Error_Msg
7321                        (Project, In_Tree,
7322                         "source file %% for unit %% not found",
7323                         No_Location);
7324                   end if;
7325
7326                   Remove_Source (Source, No_Source, Project, Data, In_Tree);
7327                end if;
7328
7329                Source := Src_Data.Next_In_Project;
7330             end loop;
7331          end;
7332
7333          --  Check that all sources in Source_Files or the file
7334          --  Source_List_File has been found.
7335
7336          declare
7337             Name_Loc : Name_Location;
7338
7339          begin
7340             Name_Loc := Source_Names.Get_First;
7341             while Name_Loc /= No_Name_Location loop
7342                if (not Name_Loc.Except) and then (not Name_Loc.Found) then
7343                   Error_Msg_Name_1 := Name_Id (Name_Loc.Name);
7344                   Error_Msg
7345                     (Project,
7346                      In_Tree,
7347                      "file %% not found",
7348                      Name_Loc.Location);
7349                end if;
7350
7351                Name_Loc := Source_Names.Get_Next;
7352             end loop;
7353          end;
7354       end if;
7355
7356       if Get_Mode = Ada_Only
7357         and then Data.Extends = No_Project
7358       then
7359          --  We should have found at least one source, if not report an error
7360
7361          if Data.Ada_Sources = Nil_String then
7362             Report_No_Sources
7363               (Project, "Ada", In_Tree, Source_List_File.Location);
7364          end if;
7365       end if;
7366
7367    end Find_Explicit_Sources;
7368
7369    -------------------------------------------
7370    -- Get_Path_Names_And_Record_Ada_Sources --
7371    -------------------------------------------
7372
7373    procedure Get_Path_Names_And_Record_Ada_Sources
7374      (Project     : Project_Id;
7375       In_Tree     : Project_Tree_Ref;
7376       Data        : in out Project_Data;
7377       Current_Dir : String)
7378    is
7379       Source_Dir      : String_List_Id;
7380       Element         : String_Element;
7381       Path            : Path_Name_Type;
7382       Dir             : Dir_Type;
7383       Name            : File_Name_Type;
7384       Canonical_Name  : File_Name_Type;
7385       Name_Str        : String (1 .. 1_024);
7386       Last            : Natural := 0;
7387       NL              : Name_Location;
7388       Current_Source  : String_List_Id := Nil_String;
7389       First_Error     : Boolean := True;
7390       Source_Recorded : Boolean := False;
7391
7392    begin
7393       --  We look in all source directories for the file names in the hash
7394       --  table Source_Names.
7395
7396       Source_Dir := Data.Source_Dirs;
7397       while Source_Dir /= Nil_String loop
7398          Source_Recorded := False;
7399          Element := In_Tree.String_Elements.Table (Source_Dir);
7400
7401          declare
7402             Dir_Path : constant String :=
7403               Get_Name_String (Element.Display_Value);
7404          begin
7405             if Current_Verbosity = High then
7406                Write_Str ("checking directory """);
7407                Write_Str (Dir_Path);
7408                Write_Line ("""");
7409             end if;
7410
7411             Open (Dir, Dir_Path);
7412
7413             loop
7414                Read (Dir, Name_Str, Last);
7415                exit when Last = 0;
7416
7417                Name_Len := Last;
7418                Name_Buffer (1 .. Name_Len) := Name_Str (1 .. Last);
7419                Name := Name_Find;
7420
7421                if Osint.File_Names_Case_Sensitive then
7422                   Canonical_Name := Name;
7423                else
7424                   Canonical_Case_File_Name (Name_Str (1 .. Last));
7425                   Name_Buffer (1 .. Name_Len) := Name_Str (1 .. Last);
7426                   Canonical_Name := Name_Find;
7427                end if;
7428
7429                NL := Source_Names.Get (Canonical_Name);
7430
7431                if NL /= No_Name_Location and then not NL.Found then
7432                   NL.Found := True;
7433                   Source_Names.Set (Canonical_Name, NL);
7434                   Name_Len := Dir_Path'Length;
7435                   Name_Buffer (1 .. Name_Len) := Dir_Path;
7436
7437                   if Name_Buffer (Name_Len) /= Directory_Separator then
7438                      Add_Char_To_Name_Buffer (Directory_Separator);
7439                   end if;
7440
7441                   Add_Str_To_Name_Buffer (Name_Str (1 .. Last));
7442                   Path := Name_Find;
7443
7444                   if Current_Verbosity = High then
7445                      Write_Str  ("  found ");
7446                      Write_Line (Get_Name_String (Name));
7447                   end if;
7448
7449                   --  Register the source if it is an Ada compilation unit
7450
7451                   Record_Ada_Source
7452                     (File_Name       => Name,
7453                      Path_Name       => Path,
7454                      Project         => Project,
7455                      In_Tree         => In_Tree,
7456                      Data            => Data,
7457                      Location        => NL.Location,
7458                      Current_Source  => Current_Source,
7459                      Source_Recorded => Source_Recorded,
7460                      Current_Dir     => Current_Dir);
7461                end if;
7462             end loop;
7463
7464             Close (Dir);
7465          end;
7466
7467          if Source_Recorded then
7468             In_Tree.String_Elements.Table (Source_Dir).Flag :=
7469               True;
7470          end if;
7471
7472          Source_Dir := Element.Next;
7473       end loop;
7474
7475       --  It is an error if a source file name in a source list or
7476       --  in a source list file is not found.
7477
7478       NL := Source_Names.Get_First;
7479       while NL /= No_Name_Location loop
7480          if not NL.Found then
7481             Err_Vars.Error_Msg_File_1 := NL.Name;
7482
7483             if First_Error then
7484                Error_Msg
7485                  (Project, In_Tree,
7486                   "source file { cannot be found",
7487                   NL.Location);
7488                First_Error := False;
7489
7490             else
7491                Error_Msg
7492                  (Project, In_Tree,
7493                   "\source file { cannot be found",
7494                   NL.Location);
7495             end if;
7496          end if;
7497
7498          NL := Source_Names.Get_Next;
7499       end loop;
7500    end Get_Path_Names_And_Record_Ada_Sources;
7501
7502    --------------------------
7503    -- Check_Naming_Schemes --
7504    --------------------------
7505
7506    procedure Check_Naming_Schemes
7507      (In_Tree               : Project_Tree_Ref;
7508       Data                  : in out Project_Data;
7509       Filename              : String;
7510       File_Name             : File_Name_Type;
7511       Alternate_Languages   : out Alternate_Language_Id;
7512       Language              : out Language_Index;
7513       Language_Name         : out Name_Id;
7514       Display_Language_Name : out Name_Id;
7515       Unit                  : out Name_Id;
7516       Lang_Kind             : out Language_Kind;
7517       Kind                  : out Source_Kind)
7518    is
7519       Last           : Positive := Filename'Last;
7520       Config         : Language_Config;
7521       Lang           : Name_List_Index := Data.Languages;
7522       Header_File    : Boolean := False;
7523       First_Language : Language_Index;
7524       OK             : Boolean;
7525
7526       Last_Spec : Natural;
7527       Last_Body : Natural;
7528       Last_Sep  : Natural;
7529
7530    begin
7531       Unit := No_Name;
7532       Alternate_Languages := No_Alternate_Language;
7533
7534       while Lang /= No_Name_List loop
7535          Language_Name := In_Tree.Name_Lists.Table (Lang).Name;
7536          Language      := Data.First_Language_Processing;
7537
7538          if Current_Verbosity = High then
7539             Write_Line
7540               ("     Testing language "
7541                & Get_Name_String (Language_Name)
7542                & " Header_File=" & Header_File'Img);
7543          end if;
7544
7545          while Language /= No_Language_Index loop
7546             if In_Tree.Languages_Data.Table (Language).Name =
7547               Language_Name
7548             then
7549                Display_Language_Name :=
7550                  In_Tree.Languages_Data.Table (Language).Display_Name;
7551                Config := In_Tree.Languages_Data.Table (Language).Config;
7552                Lang_Kind := Config.Kind;
7553
7554                if Config.Kind = File_Based then
7555
7556                   --  For file based languages, there is no Unit. Just
7557                   --  check if the file name has the implementation or,
7558                   --  if it is specified, the template suffix of the
7559                   --  language.
7560
7561                   Unit := No_Name;
7562
7563                   if not Header_File
7564                     and then Config.Naming_Data.Body_Suffix /= No_File
7565                   then
7566                      declare
7567                         Impl_Suffix : constant String :=
7568                           Get_Name_String (Config.Naming_Data.Body_Suffix);
7569
7570                      begin
7571                         if Filename'Length > Impl_Suffix'Length
7572                           and then
7573                             Filename
7574                               (Last - Impl_Suffix'Length + 1 .. Last) =
7575                               Impl_Suffix
7576                         then
7577                            Kind := Impl;
7578
7579                            if Current_Verbosity = High then
7580                               Write_Str ("     source of language ");
7581                               Write_Line
7582                                 (Get_Name_String (Display_Language_Name));
7583                            end if;
7584
7585                            return;
7586                         end if;
7587                      end;
7588                   end if;
7589
7590                   if Config.Naming_Data.Spec_Suffix /= No_File then
7591                      declare
7592                         Spec_Suffix : constant String :=
7593                           Get_Name_String
7594                             (Config.Naming_Data.Spec_Suffix);
7595
7596                      begin
7597                         if Filename'Length > Spec_Suffix'Length
7598                           and then
7599                             Filename
7600                               (Last - Spec_Suffix'Length + 1 .. Last) =
7601                               Spec_Suffix
7602                         then
7603                            Kind := Spec;
7604
7605                            if Current_Verbosity = High then
7606                               Write_Str ("     header file of language ");
7607                               Write_Line
7608                                 (Get_Name_String (Display_Language_Name));
7609                            end if;
7610
7611                            if Header_File then
7612                               Alternate_Language_Table.Increment_Last
7613                                 (In_Tree.Alt_Langs);
7614                               In_Tree.Alt_Langs.Table
7615                                 (Alternate_Language_Table.Last
7616                                    (In_Tree.Alt_Langs)) :=
7617                                 (Language => Language,
7618                                  Next     => Alternate_Languages);
7619                               Alternate_Languages :=
7620                                 Alternate_Language_Table.Last
7621                                   (In_Tree.Alt_Langs);
7622                            else
7623                               Header_File    := True;
7624                               First_Language := Language;
7625                            end if;
7626                         end if;
7627                      end;
7628                   end if;
7629
7630                elsif not Header_File then
7631                   --  Unit based language
7632
7633                   OK := Config.Naming_Data.Dot_Replacement /= No_File;
7634
7635                   if OK then
7636
7637                      --  Check casing
7638                      --  ??? Are we doing this once per file in the project ?
7639                      --  It should be done only once per project.
7640
7641                      case Config.Naming_Data.Casing is
7642                         when All_Lower_Case =>
7643                            for J in Filename'Range loop
7644                               if Is_Letter (Filename (J)) then
7645                                  if not Is_Lower (Filename (J)) then
7646                                     OK := False;
7647                                     exit;
7648                                  end if;
7649                               end if;
7650                            end loop;
7651
7652                         when All_Upper_Case =>
7653                            for J in Filename'Range loop
7654                               if Is_Letter (Filename (J)) then
7655                                  if not Is_Upper (Filename (J)) then
7656                                     OK := False;
7657                                     exit;
7658                                  end if;
7659                               end if;
7660                            end loop;
7661
7662                         when others =>
7663                            OK := False;
7664                      end case;
7665                   end if;
7666
7667                   if OK then
7668                      Last_Spec := Natural'Last;
7669                      Last_Body := Natural'Last;
7670                      Last_Sep  := Natural'Last;
7671
7672                      if Config.Naming_Data.Separate_Suffix /= No_File
7673                        and then
7674                          Config.Naming_Data.Separate_Suffix /=
7675                            Config.Naming_Data.Body_Suffix
7676                      then
7677                         declare
7678                            Suffix : constant String :=
7679                              Get_Name_String
7680                                (Config.Naming_Data.Separate_Suffix);
7681                         begin
7682                            if Filename'Length > Suffix'Length
7683                              and then
7684                                Filename
7685                                  (Last - Suffix'Length + 1 .. Last) =
7686                                  Suffix
7687                            then
7688                               Last_Sep := Last - Suffix'Length;
7689                            end if;
7690                         end;
7691                      end if;
7692
7693                      if Config.Naming_Data.Body_Suffix /= No_File then
7694                         declare
7695                            Suffix : constant String :=
7696                              Get_Name_String
7697                                (Config.Naming_Data.Body_Suffix);
7698                         begin
7699                            if Filename'Length > Suffix'Length
7700                              and then
7701                                Filename
7702                                  (Last - Suffix'Length + 1 .. Last) =
7703                                  Suffix
7704                            then
7705                               Last_Body := Last - Suffix'Length;
7706                            end if;
7707                         end;
7708                      end if;
7709
7710                      if Config.Naming_Data.Spec_Suffix /= No_File then
7711                         declare
7712                            Suffix : constant String :=
7713                              Get_Name_String
7714                                (Config.Naming_Data.Spec_Suffix);
7715                         begin
7716                            if Filename'Length > Suffix'Length
7717                              and then
7718                                Filename
7719                                  (Last - Suffix'Length + 1 .. Last) =
7720                                  Suffix
7721                            then
7722                               Last_Spec := Last - Suffix'Length;
7723                            end if;
7724                         end;
7725                      end if;
7726
7727                      declare
7728                         Last_Min : constant Natural :=
7729                                      Natural'Min (Natural'Min (Last_Spec,
7730                                                                Last_Body),
7731                                                                Last_Sep);
7732
7733                      begin
7734                         OK := Last_Min < Last;
7735
7736                         if OK then
7737                            Last := Last_Min;
7738
7739                            if Last_Min = Last_Spec then
7740                               Kind := Spec;
7741
7742                            elsif Last_Min = Last_Body then
7743                               Kind := Impl;
7744
7745                            else
7746                               Kind := Sep;
7747                            end if;
7748                         end if;
7749                      end;
7750                   end if;
7751
7752                   if OK then
7753
7754                      --  Replace dot replacements with dots
7755
7756                      Name_Len := 0;
7757
7758                      declare
7759                         J : Positive := Filename'First;
7760
7761                         Dot_Replacement : constant String :=
7762                           Get_Name_String
7763                             (Config.Naming_Data.
7764                                  Dot_Replacement);
7765
7766                         Max : constant Positive :=
7767                           Last - Dot_Replacement'Length + 1;
7768
7769                      begin
7770                         loop
7771                            Name_Len := Name_Len + 1;
7772
7773                            if J <= Max and then
7774                              Filename
7775                                (J .. J + Dot_Replacement'Length - 1) =
7776                                Dot_Replacement
7777                            then
7778                               Name_Buffer (Name_Len) := '.';
7779                               J := J + Dot_Replacement'Length;
7780
7781                            else
7782                               if Filename (J) = '.' then
7783                                  OK := False;
7784                                  exit;
7785                               end if;
7786
7787                               Name_Buffer (Name_Len) :=
7788                                 GNAT.Case_Util.To_Lower (Filename (J));
7789                               J := J + 1;
7790                            end if;
7791
7792                            exit when J > Last;
7793                         end loop;
7794                      end;
7795                   end if;
7796
7797                   if OK then
7798
7799                      --  The name buffer should contain the name of the
7800                      --  the unit, if it is one.
7801
7802                      --  Check that this is a valid unit name
7803
7804                      Check_Ada_Name (Name_Buffer (1 .. Name_Len), Unit);
7805
7806                      if Unit /= No_Name then
7807
7808                         if Current_Verbosity = High then
7809                            if Kind = Spec then
7810                               Write_Str ("     spec of ");
7811                            else
7812                               Write_Str ("     body of ");
7813                            end if;
7814
7815                            Write_Str (Get_Name_String (Unit));
7816                            Write_Str (" (language ");
7817                            Write_Str
7818                              (Get_Name_String (Display_Language_Name));
7819                            Write_Line (")");
7820                         end if;
7821
7822                         --  Comments required, declare block should
7823                         --  be named ???
7824
7825                         declare
7826                            Unit_Except : constant Unit_Exception :=
7827                              Unit_Exceptions.Get (Unit);
7828
7829                            procedure Masked_Unit (Spec : Boolean);
7830                            --  Indicate that there is an exception for
7831                            --  the same unit, so the file is not a
7832                            --  source for the unit.
7833
7834                            -----------------
7835                            -- Masked_Unit --
7836                            -----------------
7837
7838                            procedure Masked_Unit (Spec : Boolean) is
7839                            begin
7840                               if Current_Verbosity = High then
7841                                  Write_Str ("   """);
7842                                  Write_Str (Filename);
7843                                  Write_Str (""" contains the ");
7844
7845                                  if Spec then
7846                                     Write_Str ("spec");
7847                                  else
7848                                     Write_Str ("body");
7849                                  end if;
7850
7851                                  Write_Str
7852                                    (" of a unit that is found in """);
7853
7854                                  if Spec then
7855                                     Write_Str
7856                                       (Get_Name_String
7857                                          (Unit_Except.Spec));
7858                                  else
7859                                     Write_Str
7860                                       (Get_Name_String
7861                                          (Unit_Except.Impl));
7862                                  end if;
7863
7864                                  Write_Line (""" (ignored)");
7865                               end if;
7866
7867                               Language := No_Language_Index;
7868                            end Masked_Unit;
7869
7870                         begin
7871                            if Kind = Spec then
7872                               if Unit_Except.Spec /= No_File
7873                                 and then Unit_Except.Spec /= File_Name
7874                               then
7875                                  Masked_Unit (Spec => True);
7876                               end if;
7877
7878                            else
7879                               if Unit_Except.Impl /= No_File
7880                                 and then Unit_Except.Impl /= File_Name
7881                               then
7882                                  Masked_Unit (Spec => False);
7883                               end if;
7884                            end if;
7885                         end;
7886
7887                         return;
7888                      end if;
7889                   end if;
7890                end if;
7891             end if;
7892
7893             Language := In_Tree.Languages_Data.Table (Language).Next;
7894          end loop;
7895
7896          Lang := In_Tree.Name_Lists.Table (Lang).Next;
7897       end loop;
7898
7899       --  Comment needed here ???
7900
7901       if Header_File then
7902          Language := First_Language;
7903
7904       else
7905          Language := No_Language_Index;
7906
7907          if Current_Verbosity = High then
7908             Write_Line ("     not a source of any language");
7909          end if;
7910       end if;
7911    end Check_Naming_Schemes;
7912
7913    ----------------
7914    -- Check_File --
7915    ----------------
7916
7917    procedure Check_File
7918      (Project           : Project_Id;
7919       In_Tree           : Project_Tree_Ref;
7920       Data              : in out Project_Data;
7921       Name              : String;
7922       File_Name         : File_Name_Type;
7923       Display_File_Name : File_Name_Type;
7924       Source_Directory  : String;
7925       For_All_Sources   : Boolean)
7926    is
7927       Display_Path    : constant String :=
7928         Normalize_Pathname
7929           (Name           => Name,
7930            Directory      => Source_Directory,
7931            Resolve_Links  => Opt.Follow_Links_For_Files,
7932            Case_Sensitive => True);
7933
7934       Name_Loc          : Name_Location := Source_Names.Get (File_Name);
7935       Path_Id           : Path_Name_Type;
7936       Display_Path_Id   : Path_Name_Type;
7937       Check_Name        : Boolean := False;
7938       Alternate_Languages : Alternate_Language_Id := No_Alternate_Language;
7939       Language          : Language_Index;
7940       Source            : Source_Id;
7941       Other_Part        : Source_Id;
7942       Add_Src           : Boolean;
7943       Src_Ind           : Source_File_Index;
7944       Src_Data          : Source_Data;
7945       Unit              : Name_Id;
7946       Source_To_Replace : Source_Id := No_Source;
7947       Language_Name         : Name_Id;
7948       Display_Language_Name : Name_Id;
7949       Lang_Kind             : Language_Kind;
7950       Kind                  : Source_Kind := Spec;
7951
7952    begin
7953       Name_Len := Display_Path'Length;
7954       Name_Buffer (1 .. Name_Len) := Display_Path;
7955       Display_Path_Id := Name_Find;
7956
7957       if Osint.File_Names_Case_Sensitive then
7958          Path_Id := Display_Path_Id;
7959       else
7960          Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
7961          Path_Id := Name_Find;
7962       end if;
7963
7964       if Name_Loc = No_Name_Location then
7965          Check_Name := For_All_Sources;
7966
7967       else
7968          if Name_Loc.Found then
7969
7970             --  Check if it is OK to have the same file name in several
7971             --  source directories.
7972
7973             if not Data.Known_Order_Of_Source_Dirs then
7974                Error_Msg_File_1 := File_Name;
7975                Error_Msg
7976                  (Project, In_Tree,
7977                   "{ is found in several source directories",
7978                   Name_Loc.Location);
7979             end if;
7980
7981          else
7982             Name_Loc.Found := True;
7983
7984             Source_Names.Set (File_Name, Name_Loc);
7985
7986             if Name_Loc.Source = No_Source then
7987                Check_Name := True;
7988
7989             else
7990                In_Tree.Sources.Table (Name_Loc.Source).Path :=
7991                  (Path_Id, Display_Path_Id);
7992
7993                Source_Paths_Htable.Set
7994                  (In_Tree.Source_Paths_HT,
7995                   Path_Id,
7996                   Name_Loc.Source);
7997
7998                --  Check if this is a subunit
7999
8000                if In_Tree.Sources.Table (Name_Loc.Source).Unit /= No_Name
8001                  and then
8002                    In_Tree.Sources.Table (Name_Loc.Source).Kind = Impl
8003                then
8004                   Src_Ind := Sinput.P.Load_Project_File
8005                     (Get_Name_String (Path_Id));
8006
8007                   if Sinput.P.Source_File_Is_Subunit (Src_Ind) then
8008                      In_Tree.Sources.Table (Name_Loc.Source).Kind := Sep;
8009                   end if;
8010                end if;
8011             end if;
8012          end if;
8013       end if;
8014
8015       if Check_Name then
8016          Other_Part := No_Source;
8017
8018          Check_Naming_Schemes
8019            (In_Tree               => In_Tree,
8020             Data                  => Data,
8021             Filename              => Get_Name_String (File_Name),
8022             File_Name             => File_Name,
8023             Alternate_Languages   => Alternate_Languages,
8024             Language              => Language,
8025             Language_Name         => Language_Name,
8026             Display_Language_Name => Display_Language_Name,
8027             Unit                  => Unit,
8028             Lang_Kind             => Lang_Kind,
8029             Kind                  => Kind);
8030
8031          if Language = No_Language_Index then
8032
8033             --  A file name in a list must be a source of a language
8034
8035             if Name_Loc.Found then
8036                Error_Msg_File_1 := File_Name;
8037                Error_Msg
8038                  (Project,
8039                   In_Tree,
8040                   "language unknown for {",
8041                   Name_Loc.Location);
8042             end if;
8043
8044          else
8045             --  Check if the same file name or unit is used in the prj tree
8046
8047             Source := In_Tree.First_Source;
8048             Add_Src := True;
8049             while Source /= No_Source loop
8050                Src_Data := In_Tree.Sources.Table (Source);
8051
8052                if Unit /= No_Name
8053                  and then Src_Data.Unit = Unit
8054                  and then
8055                    ((Src_Data.Kind = Spec and then Kind = Impl)
8056                       or else
8057                     (Src_Data.Kind = Impl and then Kind = Spec))
8058                then
8059                   Other_Part := Source;
8060
8061                elsif (Unit /= No_Name
8062                        and then Src_Data.Unit = Unit
8063                        and then
8064                          (Src_Data.Kind = Kind
8065                             or else
8066                          (Src_Data.Kind = Sep and then Kind = Impl)
8067                             or else
8068                          (Src_Data.Kind = Impl and then Kind = Sep)))
8069                  or else (Unit = No_Name and then Src_Data.File = File_Name)
8070                then
8071                   --  Duplication of file/unit in same project is only
8072                   --  allowed if order of source directories is known.
8073
8074                   if Project = Src_Data.Project then
8075                      if Data.Known_Order_Of_Source_Dirs then
8076                         Add_Src := False;
8077
8078                      elsif Unit /= No_Name then
8079                         Error_Msg_Name_1 := Unit;
8080                         Error_Msg
8081                           (Project, In_Tree, "duplicate unit %%", No_Location);
8082                         Add_Src := False;
8083
8084                      else
8085                         Error_Msg_File_1 := File_Name;
8086                         Error_Msg
8087                           (Project, In_Tree, "duplicate source file name {",
8088                            No_Location);
8089                         Add_Src := False;
8090                      end if;
8091
8092                      --  Do not allow the same unit name in different
8093                      --  projects, except if one is extending the other.
8094
8095                      --  For a file based language, the same file name
8096                      --  replaces a file in a project being extended, but
8097                      --  it is allowed to have the same file name in
8098                      --  unrelated projects.
8099
8100                   elsif Is_Extending
8101                     (Project, Src_Data.Project, In_Tree)
8102                   then
8103                      Source_To_Replace := Source;
8104
8105                   elsif Unit /= No_Name then
8106                      Error_Msg_Name_1 := Unit;
8107                      Error_Msg
8108                        (Project, In_Tree,
8109                         "unit %% cannot belong to several projects",
8110                         No_Location);
8111
8112                      Error_Msg_Name_1 := In_Tree.Projects.Table (Project).Name;
8113                      Error_Msg_Name_2 := Name_Id (Display_Path_Id);
8114                      Error_Msg
8115                        (Project, In_Tree, "\  project %%, %%", No_Location);
8116
8117                      Error_Msg_Name_1 :=
8118                        In_Tree.Projects.Table (Src_Data.Project).Name;
8119                      Error_Msg_Name_2 := Name_Id (Src_Data.Path.Display_Name);
8120                      Error_Msg
8121                        (Project, In_Tree, "\  project %%, %%", No_Location);
8122
8123                      Add_Src := False;
8124                   end if;
8125                end if;
8126
8127                Source := Src_Data.Next_In_Sources;
8128             end loop;
8129
8130             if Add_Src then
8131                Add_Source
8132                  (Id                  => Source,
8133                   Data                => Data,
8134                   In_Tree             => In_Tree,
8135                   Project             => Project,
8136                   Lang                => Language_Name,
8137                   Lang_Id             => Language,
8138                   Lang_Kind           => Lang_Kind,
8139                   Kind                => Kind,
8140                   Alternate_Languages => Alternate_Languages,
8141                   File_Name           => File_Name,
8142                   Display_File        => Display_File_Name,
8143                   Other_Part          => Other_Part,
8144                   Unit                => Unit,
8145                   Path                => Path_Id,
8146                   Display_Path        => Display_Path_Id,
8147                   Source_To_Replace   => Source_To_Replace);
8148             end if;
8149          end if;
8150       end if;
8151    end Check_File;
8152
8153    ------------------------
8154    -- Search_Directories --
8155    ------------------------
8156
8157    procedure Search_Directories
8158      (Project         : Project_Id;
8159       In_Tree         : Project_Tree_Ref;
8160       Data            : in out Project_Data;
8161       For_All_Sources : Boolean)
8162    is
8163       Source_Dir        : String_List_Id;
8164       Element           : String_Element;
8165       Dir               : Dir_Type;
8166       Name              : String (1 .. 1_000);
8167       Last              : Natural;
8168       File_Name         : File_Name_Type;
8169       Display_File_Name : File_Name_Type;
8170
8171    begin
8172       if Current_Verbosity = High then
8173          Write_Line ("Looking for sources:");
8174       end if;
8175
8176       --  Loop through subdirectories
8177
8178       Source_Dir := Data.Source_Dirs;
8179       while Source_Dir /= Nil_String loop
8180          begin
8181             Element := In_Tree.String_Elements.Table (Source_Dir);
8182             if Element.Value /= No_Name then
8183                Get_Name_String (Element.Display_Value);
8184
8185                declare
8186                   Source_Directory : constant String :=
8187                                        Name_Buffer (1 .. Name_Len) &
8188                                          Directory_Separator;
8189
8190                   Dir_Last : constant Natural :=
8191                                        Compute_Directory_Last
8192                                          (Source_Directory);
8193
8194                begin
8195                   if Current_Verbosity = High then
8196                      Write_Str ("Source_Dir = ");
8197                      Write_Line (Source_Directory);
8198                   end if;
8199
8200                   --  We look to every entry in the source directory
8201
8202                   Open (Dir, Source_Directory);
8203
8204                   loop
8205                      Read (Dir, Name, Last);
8206
8207                      exit when Last = 0;
8208
8209                      --  ??? Duplicate system call here, we just did a
8210                      --  a similar one. Maybe Ada.Directories would be more
8211                      --  appropriate here
8212
8213                      if Is_Regular_File
8214                        (Source_Directory & Name (1 .. Last))
8215                      then
8216                         if Current_Verbosity = High then
8217                            Write_Str  ("   Checking ");
8218                            Write_Line (Name (1 .. Last));
8219                         end if;
8220
8221                         Name_Len := Last;
8222                         Name_Buffer (1 .. Name_Len) := Name (1 .. Last);
8223                         Display_File_Name := Name_Find;
8224
8225                         if Osint.File_Names_Case_Sensitive then
8226                            File_Name := Display_File_Name;
8227                         else
8228                            Canonical_Case_File_Name
8229                              (Name_Buffer (1 .. Name_Len));
8230                            File_Name := Name_Find;
8231                         end if;
8232
8233                         declare
8234                            FF : File_Found :=
8235                                   Excluded_Sources_Htable.Get (File_Name);
8236
8237                         begin
8238                            if FF /= No_File_Found then
8239                               if not FF.Found then
8240                                  FF.Found := True;
8241                                  Excluded_Sources_Htable.Set
8242                                    (File_Name, FF);
8243
8244                                  if Current_Verbosity = High then
8245                                     Write_Str ("     excluded source """);
8246                                     Write_Str (Get_Name_String (File_Name));
8247                                     Write_Line ("""");
8248                                  end if;
8249                               end if;
8250
8251                            else
8252                               Check_File
8253                                 (Project           => Project,
8254                                  In_Tree           => In_Tree,
8255                                  Data              => Data,
8256                                  Name              => Name (1 .. Last),
8257                                  File_Name         => File_Name,
8258                                  Display_File_Name => Display_File_Name,
8259                                  Source_Directory  => Source_Directory
8260                                    (Source_Directory'First .. Dir_Last),
8261                                  For_All_Sources   => For_All_Sources);
8262                            end if;
8263                         end;
8264                      end if;
8265                   end loop;
8266
8267                   Close (Dir);
8268                end;
8269             end if;
8270
8271          exception
8272             when Directory_Error =>
8273                null;
8274          end;
8275
8276          Source_Dir := Element.Next;
8277       end loop;
8278
8279       if Current_Verbosity = High then
8280          Write_Line ("end Looking for sources.");
8281       end if;
8282    end Search_Directories;
8283
8284    ----------------------
8285    -- Look_For_Sources --
8286    ----------------------
8287
8288    procedure Look_For_Sources
8289      (Project     : Project_Id;
8290       In_Tree     : Project_Tree_Ref;
8291       Data        : in out Project_Data;
8292       Current_Dir : String)
8293    is
8294       procedure Remove_Locally_Removed_Files_From_Units;
8295       --  Mark all locally removed sources as such in the Units table
8296
8297       procedure Process_Sources_In_Multi_Language_Mode;
8298       --  Find all source files when in multi language mode
8299
8300       ---------------------------------------------
8301       -- Remove_Locally_Removed_Files_From_Units --
8302       ---------------------------------------------
8303
8304       procedure Remove_Locally_Removed_Files_From_Units is
8305          Excluded : File_Found;
8306          OK       : Boolean;
8307          Unit     : Unit_Data;
8308          Extended : Project_Id;
8309
8310       begin
8311          Excluded := Excluded_Sources_Htable.Get_First;
8312          while Excluded /= No_File_Found loop
8313             OK := False;
8314
8315             For_Each_Unit :
8316             for Index in Unit_Table.First ..
8317               Unit_Table.Last (In_Tree.Units)
8318             loop
8319                Unit := In_Tree.Units.Table (Index);
8320
8321                for Kind in Spec_Or_Body'Range loop
8322                   if Unit.File_Names (Kind).Name = Excluded.File then
8323                      OK := True;
8324
8325                      --  Check that this is from the current project or
8326                      --  that the current project extends.
8327
8328                      Extended := Unit.File_Names (Kind).Project;
8329
8330                      if Extended = Project
8331                        or else Project_Extends (Project, Extended, In_Tree)
8332                      then
8333                         Unit.File_Names (Kind).Path.Name := Slash;
8334                         Unit.File_Names (Kind).Needs_Pragma := False;
8335                         In_Tree.Units.Table (Index) := Unit;
8336                         Add_Forbidden_File_Name
8337                           (Unit.File_Names (Kind).Name);
8338                      else
8339                         Error_Msg
8340                           (Project, In_Tree,
8341                            "cannot remove a source from " &
8342                            "another project",
8343                            Excluded.Location);
8344                      end if;
8345                      exit For_Each_Unit;
8346                   end if;
8347                end loop;
8348             end loop For_Each_Unit;
8349
8350             if not OK then
8351                Err_Vars.Error_Msg_File_1 := Excluded.File;
8352                Error_Msg
8353                  (Project, In_Tree, "unknown file {", Excluded.Location);
8354             end if;
8355
8356             Excluded := Excluded_Sources_Htable.Get_Next;
8357          end loop;
8358       end Remove_Locally_Removed_Files_From_Units;
8359
8360       --------------------------------------------
8361       -- Process_Sources_In_Multi_Language_Mode --
8362       --------------------------------------------
8363
8364       procedure Process_Sources_In_Multi_Language_Mode is
8365          Source   : Source_Id;
8366          Src_Data : Source_Data;
8367          Name_Loc : Name_Location;
8368          OK       : Boolean;
8369          FF       : File_Found;
8370
8371       begin
8372          --  First, put all naming exceptions if any, in the Source_Names table
8373
8374          Unit_Exceptions.Reset;
8375
8376          Source := Data.First_Source;
8377          while Source /= No_Source loop
8378             Src_Data := In_Tree.Sources.Table (Source);
8379
8380             --  A file that is excluded cannot also be an exception file name
8381
8382             if Excluded_Sources_Htable.Get (Src_Data.File) /=
8383               No_File_Found
8384             then
8385                Error_Msg_File_1 := Src_Data.File;
8386                Error_Msg
8387                  (Project, In_Tree,
8388                   "{ cannot be both excluded and an exception file name",
8389                   No_Location);
8390             end if;
8391
8392             Name_Loc := (Name     => Src_Data.File,
8393                          Location => No_Location,
8394                          Source   => Source,
8395                          Except   => Src_Data.Unit /= No_Name,
8396                          Found    => False);
8397
8398             if Current_Verbosity = High then
8399                Write_Str ("Putting source #");
8400                Write_Str (Source'Img);
8401                Write_Str (", file ");
8402                Write_Str (Get_Name_String (Src_Data.File));
8403                Write_Line (" in Source_Names");
8404             end if;
8405
8406             Source_Names.Set (K => Src_Data.File, E => Name_Loc);
8407
8408             --  If this is an Ada exception, record it in table Unit_Exceptions
8409
8410             if Src_Data.Unit /= No_Name then
8411                declare
8412                   Unit_Except : Unit_Exception :=
8413                                   Unit_Exceptions.Get (Src_Data.Unit);
8414
8415                begin
8416                   Unit_Except.Name := Src_Data.Unit;
8417
8418                   if Src_Data.Kind = Spec then
8419                      Unit_Except.Spec := Src_Data.File;
8420                   else
8421                      Unit_Except.Impl := Src_Data.File;
8422                   end if;
8423
8424                   Unit_Exceptions.Set (Src_Data.Unit, Unit_Except);
8425                end;
8426             end if;
8427
8428             Source := Src_Data.Next_In_Project;
8429          end loop;
8430
8431          Find_Explicit_Sources
8432            (Current_Dir, Project, In_Tree, Data);
8433
8434          --  Mark as such the sources that are declared as excluded
8435
8436          FF := Excluded_Sources_Htable.Get_First;
8437          while FF /= No_File_Found loop
8438             OK     := False;
8439             Source := In_Tree.First_Source;
8440
8441             while Source /= No_Source loop
8442                Src_Data := In_Tree.Sources.Table (Source);
8443
8444                if Src_Data.File = FF.File then
8445
8446                   --  Check that this is from this project or a project that
8447                   --  the current project extends.
8448
8449                   if Src_Data.Project = Project or else
8450                     Is_Extending (Project, Src_Data.Project, In_Tree)
8451                   then
8452                      Src_Data.Locally_Removed := True;
8453                      Src_Data.In_Interfaces := False;
8454                      In_Tree.Sources.Table (Source) := Src_Data;
8455                      Add_Forbidden_File_Name (FF.File);
8456                      OK := True;
8457                      exit;
8458                   end if;
8459                end if;
8460
8461                Source := Src_Data.Next_In_Sources;
8462             end loop;
8463
8464             if not FF.Found and not OK then
8465                Err_Vars.Error_Msg_File_1 := FF.File;
8466                Error_Msg (Project, In_Tree, "unknown file {", FF.Location);
8467             end if;
8468
8469             FF := Excluded_Sources_Htable.Get_Next;
8470          end loop;
8471
8472          --  Check that two sources of this project do not have the same object
8473          --  file name.
8474
8475          Check_Object_File_Names : declare
8476             Src_Id      : Source_Id;
8477             Src_Data    : Source_Data;
8478             Source_Name : File_Name_Type;
8479
8480             procedure Check_Object;
8481             --  Check if object file name of the current source is already in
8482             --  hash table Object_File_Names. If it is, report an error. If it
8483             --  is not, put it there with the file name of the current source.
8484
8485             ------------------
8486             -- Check_Object --
8487             ------------------
8488
8489             procedure Check_Object is
8490             begin
8491                Source_Name := Object_File_Names.Get (Src_Data.Object);
8492
8493                if Source_Name /= No_File then
8494                   Error_Msg_File_1 := Src_Data.File;
8495                   Error_Msg_File_2 := Source_Name;
8496                   Error_Msg
8497                     (Project,
8498                      In_Tree,
8499                      "{ and { have the same object file name",
8500                      No_Location);
8501
8502                else
8503                   Object_File_Names.Set (Src_Data.Object, Src_Data.File);
8504                end if;
8505             end Check_Object;
8506
8507          --  Start of processing for Check_Object_File_Names
8508
8509          begin
8510             Object_File_Names.Reset;
8511             Src_Id := In_Tree.First_Source;
8512             while Src_Id /= No_Source loop
8513                Src_Data := In_Tree.Sources.Table (Src_Id);
8514
8515                if Src_Data.Compiled and then Src_Data.Object_Exists
8516                  and then Project_Extends (Project, Src_Data.Project, In_Tree)
8517                then
8518                   if Src_Data.Unit = No_Name then
8519                      if Src_Data.Kind = Impl then
8520                         Check_Object;
8521                      end if;
8522
8523                   else
8524                      case Src_Data.Kind is
8525                         when Spec =>
8526                            if Src_Data.Other_Part = No_Source then
8527                               Check_Object;
8528                            end if;
8529
8530                         when Sep =>
8531                            null;
8532
8533                         when Impl =>
8534                            if Src_Data.Other_Part /= No_Source then
8535                               Check_Object;
8536
8537                            else
8538                               --  Check if it is a subunit
8539
8540                               declare
8541                                  Src_Ind : constant Source_File_Index :=
8542                                              Sinput.P.Load_Project_File
8543                                                (Get_Name_String
8544                                                   (Src_Data.Path.Name));
8545
8546                               begin
8547                                  if Sinput.P.Source_File_Is_Subunit
8548                                      (Src_Ind)
8549                                  then
8550                                     In_Tree.Sources.Table (Src_Id).Kind := Sep;
8551                                  else
8552                                     Check_Object;
8553                                  end if;
8554                               end;
8555                            end if;
8556                      end case;
8557                   end if;
8558                end if;
8559
8560                Src_Id := Src_Data.Next_In_Sources;
8561             end loop;
8562          end Check_Object_File_Names;
8563       end Process_Sources_In_Multi_Language_Mode;
8564
8565    --  Start of processing for Look_For_Sources
8566
8567    begin
8568       Source_Names.Reset;
8569       Find_Excluded_Sources (Project, In_Tree, Data);
8570
8571       case Get_Mode is
8572          when Ada_Only =>
8573             if Is_A_Language (In_Tree, Data, Name_Ada) then
8574                Find_Explicit_Sources (Current_Dir, Project, In_Tree, Data);
8575                Remove_Locally_Removed_Files_From_Units;
8576             end if;
8577
8578          when Multi_Language =>
8579             if Data.First_Language_Processing /= No_Language_Index then
8580                Process_Sources_In_Multi_Language_Mode;
8581             end if;
8582       end case;
8583    end Look_For_Sources;
8584
8585    ------------------
8586    -- Path_Name_Of --
8587    ------------------
8588
8589    function Path_Name_Of
8590      (File_Name : File_Name_Type;
8591       Directory : Path_Name_Type) return String
8592    is
8593       Result        : String_Access;
8594       The_Directory : constant String := Get_Name_String (Directory);
8595
8596    begin
8597       Get_Name_String (File_Name);
8598       Result :=
8599         Locate_Regular_File
8600           (File_Name => Name_Buffer (1 .. Name_Len),
8601            Path      => The_Directory);
8602
8603       if Result = null then
8604          return "";
8605       else
8606          Canonical_Case_File_Name (Result.all);
8607          return Result.all;
8608       end if;
8609    end Path_Name_Of;
8610
8611    -------------------------------
8612    -- Prepare_Ada_Naming_Exceptions --
8613    -------------------------------
8614
8615    procedure Prepare_Ada_Naming_Exceptions
8616      (List    : Array_Element_Id;
8617       In_Tree : Project_Tree_Ref;
8618       Kind    : Spec_Or_Body)
8619    is
8620       Current : Array_Element_Id;
8621       Element : Array_Element;
8622       Unit    : Unit_Info;
8623
8624    begin
8625       --  Traverse the list
8626
8627       Current := List;
8628       while Current /= No_Array_Element loop
8629          Element := In_Tree.Array_Elements.Table (Current);
8630
8631          if Element.Index /= No_Name then
8632             Unit :=
8633               (Kind => Kind,
8634                Unit => Element.Index,
8635                Next => No_Ada_Naming_Exception);
8636             Reverse_Ada_Naming_Exceptions.Set
8637               (Unit, (Element.Value.Value, Element.Value.Index));
8638             Unit.Next :=
8639               Ada_Naming_Exceptions.Get (File_Name_Type (Element.Value.Value));
8640             Ada_Naming_Exception_Table.Increment_Last;
8641             Ada_Naming_Exception_Table.Table
8642               (Ada_Naming_Exception_Table.Last) := Unit;
8643             Ada_Naming_Exceptions.Set
8644               (File_Name_Type (Element.Value.Value),
8645                Ada_Naming_Exception_Table.Last);
8646          end if;
8647
8648          Current := Element.Next;
8649       end loop;
8650    end Prepare_Ada_Naming_Exceptions;
8651
8652    ---------------------
8653    -- Project_Extends --
8654    ---------------------
8655
8656    function Project_Extends
8657      (Extending : Project_Id;
8658       Extended  : Project_Id;
8659       In_Tree   : Project_Tree_Ref) return Boolean
8660    is
8661       Current : Project_Id := Extending;
8662
8663    begin
8664       loop
8665          if Current = No_Project then
8666             return False;
8667
8668          elsif Current = Extended then
8669             return True;
8670          end if;
8671
8672          Current := In_Tree.Projects.Table (Current).Extends;
8673       end loop;
8674    end Project_Extends;
8675
8676    -----------------------
8677    -- Record_Ada_Source --
8678    -----------------------
8679
8680    procedure Record_Ada_Source
8681      (File_Name       : File_Name_Type;
8682       Path_Name       : Path_Name_Type;
8683       Project         : Project_Id;
8684       In_Tree         : Project_Tree_Ref;
8685       Data            : in out Project_Data;
8686       Location        : Source_Ptr;
8687       Current_Source  : in out String_List_Id;
8688       Source_Recorded : in out Boolean;
8689       Current_Dir     : String)
8690    is
8691       Canonical_File_Name : File_Name_Type;
8692       Canonical_Path_Name : Path_Name_Type;
8693
8694       Exception_Id : Ada_Naming_Exception_Id;
8695       Unit_Name    : Name_Id;
8696       Unit_Kind    : Spec_Or_Body;
8697       Unit_Ind     : Int := 0;
8698       Info         : Unit_Info;
8699       Name_Index   : Name_And_Index;
8700       Needs_Pragma : Boolean;
8701
8702       The_Location    : Source_Ptr              := Location;
8703       Previous_Source : constant String_List_Id := Current_Source;
8704       Except_Name     : Name_And_Index          := No_Name_And_Index;
8705
8706       Unit_Prj : Unit_Project;
8707
8708       File_Name_Recorded : Boolean := False;
8709
8710    begin
8711       if Osint.File_Names_Case_Sensitive then
8712          Canonical_File_Name := File_Name;
8713          Canonical_Path_Name := Path_Name;
8714       else
8715          Get_Name_String (File_Name);
8716          Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
8717          Canonical_File_Name := Name_Find;
8718
8719          declare
8720             Canonical_Path : constant String :=
8721                                Normalize_Pathname
8722                                  (Get_Name_String (Path_Name),
8723                                   Directory      => Current_Dir,
8724                                   Resolve_Links  => Opt.Follow_Links_For_Files,
8725                                   Case_Sensitive => False);
8726          begin
8727             Name_Len := 0;
8728             Add_Str_To_Name_Buffer (Canonical_Path);
8729             Canonical_Path_Name := Name_Find;
8730          end;
8731       end if;
8732
8733       --  Find out the unit name, the unit kind and if it needs
8734       --  a specific SFN pragma.
8735
8736       Get_Unit
8737         (In_Tree             => In_Tree,
8738          Canonical_File_Name => Canonical_File_Name,
8739          Naming              => Data.Naming,
8740          Exception_Id        => Exception_Id,
8741          Unit_Name           => Unit_Name,
8742          Unit_Kind           => Unit_Kind,
8743          Needs_Pragma        => Needs_Pragma);
8744
8745       if Exception_Id = No_Ada_Naming_Exception
8746         and then Unit_Name = No_Name
8747       then
8748          if Current_Verbosity = High then
8749             Write_Str  ("   """);
8750             Write_Str  (Get_Name_String (Canonical_File_Name));
8751             Write_Line (""" is not a valid source file name (ignored).");
8752          end if;
8753
8754       else
8755          --  Check to see if the source has been hidden by an exception,
8756          --  but only if it is not an exception.
8757
8758          if not Needs_Pragma then
8759             Except_Name :=
8760               Reverse_Ada_Naming_Exceptions.Get
8761                 ((Unit_Kind, Unit_Name, No_Ada_Naming_Exception));
8762
8763             if Except_Name /= No_Name_And_Index then
8764                if Current_Verbosity = High then
8765                   Write_Str  ("   """);
8766                   Write_Str  (Get_Name_String (Canonical_File_Name));
8767                   Write_Str  (""" contains a unit that is found in """);
8768                   Write_Str  (Get_Name_String (Except_Name.Name));
8769                   Write_Line (""" (ignored).");
8770                end if;
8771
8772                --  The file is not included in the source of the project since
8773                --  it is hidden by the exception. So, nothing else to do.
8774
8775                return;
8776             end if;
8777          end if;
8778
8779          loop
8780             if Exception_Id /= No_Ada_Naming_Exception then
8781                Info := Ada_Naming_Exception_Table.Table (Exception_Id);
8782                Exception_Id := Info.Next;
8783                Info.Next := No_Ada_Naming_Exception;
8784                Name_Index := Reverse_Ada_Naming_Exceptions.Get (Info);
8785
8786                Unit_Name := Info.Unit;
8787                Unit_Ind  := Name_Index.Index;
8788                Unit_Kind := Info.Kind;
8789             end if;
8790
8791             --  Put the file name in the list of sources of the project
8792
8793             String_Element_Table.Increment_Last (In_Tree.String_Elements);
8794             In_Tree.String_Elements.Table
8795               (String_Element_Table.Last (In_Tree.String_Elements)) :=
8796                 (Value         => Name_Id (Canonical_File_Name),
8797                  Display_Value => Name_Id (File_Name),
8798                  Location      => No_Location,
8799                  Flag          => False,
8800                  Next          => Nil_String,
8801                  Index         => Unit_Ind);
8802
8803             if Current_Source = Nil_String then
8804                Data.Ada_Sources :=
8805                  String_Element_Table.Last (In_Tree.String_Elements);
8806                Data.Sources := Data.Ada_Sources;
8807             else
8808                In_Tree.String_Elements.Table (Current_Source).Next :=
8809                  String_Element_Table.Last (In_Tree.String_Elements);
8810             end if;
8811
8812             Current_Source :=
8813               String_Element_Table.Last (In_Tree.String_Elements);
8814
8815             --  Put the unit in unit list
8816
8817             declare
8818                The_Unit : Unit_Index :=
8819                             Units_Htable.Get (In_Tree.Units_HT, Unit_Name);
8820
8821                The_Unit_Data : Unit_Data;
8822
8823             begin
8824                if Current_Verbosity = High then
8825                   Write_Str  ("Putting ");
8826                   Write_Str  (Get_Name_String (Unit_Name));
8827                   Write_Line (" in the unit list.");
8828                end if;
8829
8830                --  The unit is already in the list, but may be it is
8831                --  only the other unit kind (spec or body), or what is
8832                --  in the unit list is a unit of a project we are extending.
8833
8834                if The_Unit /= No_Unit_Index then
8835                   The_Unit_Data := In_Tree.Units.Table (The_Unit);
8836
8837                   if (The_Unit_Data.File_Names (Unit_Kind).Name =
8838                                                           Canonical_File_Name
8839                         and then
8840                         The_Unit_Data.File_Names
8841                           (Unit_Kind).Path.Name = Slash)
8842                     or else The_Unit_Data.File_Names (Unit_Kind).Name = No_File
8843                     or else Project_Extends
8844                       (Data.Extends,
8845                        The_Unit_Data.File_Names (Unit_Kind).Project,
8846                        In_Tree)
8847                   then
8848                      if
8849                        The_Unit_Data.File_Names (Unit_Kind).Path.Name = Slash
8850                      then
8851                         Remove_Forbidden_File_Name
8852                           (The_Unit_Data.File_Names (Unit_Kind).Name);
8853                      end if;
8854
8855                      --  Record the file name in the hash table Files_Htable
8856
8857                      Unit_Prj := (Unit => The_Unit, Project => Project);
8858                      Files_Htable.Set
8859                        (In_Tree.Files_HT,
8860                         Canonical_File_Name,
8861                         Unit_Prj);
8862
8863                      The_Unit_Data.File_Names (Unit_Kind) :=
8864                        (Name         => Canonical_File_Name,
8865                         Index        => Unit_Ind,
8866                         Display_Name => File_Name,
8867                         Path         => (Canonical_Path_Name, Path_Name),
8868                         Project      => Project,
8869                         Needs_Pragma => Needs_Pragma);
8870                      In_Tree.Units.Table (The_Unit) := The_Unit_Data;
8871                      Source_Recorded := True;
8872
8873                   elsif The_Unit_Data.File_Names (Unit_Kind).Project = Project
8874                     and then (Data.Known_Order_Of_Source_Dirs
8875                                 or else
8876                                 The_Unit_Data.File_Names
8877                                   (Unit_Kind).Path.Name = Canonical_Path_Name)
8878                   then
8879                      if Previous_Source = Nil_String then
8880                         Data.Ada_Sources := Nil_String;
8881                         Data.Sources := Nil_String;
8882                      else
8883                         In_Tree.String_Elements.Table (Previous_Source).Next :=
8884                           Nil_String;
8885                         String_Element_Table.Decrement_Last
8886                           (In_Tree.String_Elements);
8887                      end if;
8888
8889                      Current_Source := Previous_Source;
8890
8891                   else
8892                      --  It is an error to have two units with the same name
8893                      --  and the same kind (spec or body).
8894
8895                      if The_Location = No_Location then
8896                         The_Location :=
8897                           In_Tree.Projects.Table (Project).Location;
8898                      end if;
8899
8900                      Err_Vars.Error_Msg_Name_1 := Unit_Name;
8901                      Error_Msg
8902                        (Project, In_Tree, "duplicate unit %%", The_Location);
8903
8904                      Err_Vars.Error_Msg_Name_1 :=
8905                        In_Tree.Projects.Table
8906                          (The_Unit_Data.File_Names (Unit_Kind).Project).Name;
8907                      Err_Vars.Error_Msg_File_1 :=
8908                        File_Name_Type
8909                          (The_Unit_Data.File_Names (Unit_Kind).Path.Name);
8910                      Error_Msg
8911                        (Project, In_Tree,
8912                         "\   project file %%, {", The_Location);
8913
8914                      Err_Vars.Error_Msg_Name_1 :=
8915                        In_Tree.Projects.Table (Project).Name;
8916                      Err_Vars.Error_Msg_File_1 :=
8917                        File_Name_Type (Canonical_Path_Name);
8918                      Error_Msg
8919                        (Project, In_Tree,
8920                         "\   project file %%, {", The_Location);
8921                   end if;
8922
8923                --  It is a new unit, create a new record
8924
8925                else
8926                   --  First, check if there is no other unit with this file
8927                   --  name in another project. If it is, report error but note
8928                   --  we do that only for the first unit in the source file.
8929
8930                   Unit_Prj :=
8931                     Files_Htable.Get (In_Tree.Files_HT, Canonical_File_Name);
8932
8933                   if not File_Name_Recorded and then
8934                     Unit_Prj /= No_Unit_Project
8935                   then
8936                      Error_Msg_File_1 := File_Name;
8937                      Error_Msg_Name_1 :=
8938                        In_Tree.Projects.Table (Unit_Prj.Project).Name;
8939                      Error_Msg
8940                        (Project, In_Tree,
8941                         "{ is already a source of project %%",
8942                         Location);
8943
8944                   else
8945                      Unit_Table.Increment_Last (In_Tree.Units);
8946                      The_Unit := Unit_Table.Last (In_Tree.Units);
8947                      Units_Htable.Set
8948                        (In_Tree.Units_HT, Unit_Name, The_Unit);
8949                      Unit_Prj := (Unit => The_Unit, Project => Project);
8950                      Files_Htable.Set
8951                        (In_Tree.Files_HT,
8952                         Canonical_File_Name,
8953                         Unit_Prj);
8954                      The_Unit_Data.Name := Unit_Name;
8955                      The_Unit_Data.File_Names (Unit_Kind) :=
8956                        (Name         => Canonical_File_Name,
8957                         Index        => Unit_Ind,
8958                         Display_Name => File_Name,
8959                         Path         => (Canonical_Path_Name, Path_Name),
8960                         Project      => Project,
8961                         Needs_Pragma => Needs_Pragma);
8962                      In_Tree.Units.Table (The_Unit) := The_Unit_Data;
8963                      Source_Recorded := True;
8964                   end if;
8965                end if;
8966             end;
8967
8968             exit when Exception_Id = No_Ada_Naming_Exception;
8969             File_Name_Recorded := True;
8970          end loop;
8971       end if;
8972    end Record_Ada_Source;
8973
8974    -------------------
8975    -- Remove_Source --
8976    -------------------
8977
8978    procedure Remove_Source
8979      (Id          : Source_Id;
8980       Replaced_By : Source_Id;
8981       Project     : Project_Id;
8982       Data        : in out Project_Data;
8983       In_Tree     : Project_Tree_Ref)
8984    is
8985       Src_Data : constant Source_Data := In_Tree.Sources.Table (Id);
8986       Source   : Source_Id;
8987
8988    begin
8989       if Current_Verbosity = High then
8990          Write_Str ("Removing source #");
8991          Write_Line (Id'Img);
8992       end if;
8993
8994       if Replaced_By /= No_Source then
8995          In_Tree.Sources.Table (Id).Replaced_By := Replaced_By;
8996          In_Tree.Sources.Table (Replaced_By).Declared_In_Interfaces :=
8997            In_Tree.Sources.Table (Id).Declared_In_Interfaces;
8998       end if;
8999
9000       --  Remove the source from the global source list
9001
9002       Source := In_Tree.First_Source;
9003
9004       if Source = Id then
9005          In_Tree.First_Source := Src_Data.Next_In_Sources;
9006
9007       else
9008          while In_Tree.Sources.Table (Source).Next_In_Sources /= Id loop
9009             Source := In_Tree.Sources.Table (Source).Next_In_Sources;
9010          end loop;
9011
9012          In_Tree.Sources.Table (Source).Next_In_Sources :=
9013            Src_Data.Next_In_Sources;
9014       end if;
9015
9016       --  Remove the source from the project list
9017
9018       if Src_Data.Project = Project then
9019          Source := Data.First_Source;
9020
9021          if Source = Id then
9022             Data.First_Source := Src_Data.Next_In_Project;
9023
9024             if Src_Data.Next_In_Project = No_Source then
9025                Data.Last_Source := No_Source;
9026             end if;
9027
9028          else
9029             while In_Tree.Sources.Table (Source).Next_In_Project /= Id loop
9030                Source := In_Tree.Sources.Table (Source).Next_In_Project;
9031             end loop;
9032
9033             In_Tree.Sources.Table (Source).Next_In_Project :=
9034               Src_Data.Next_In_Project;
9035
9036             if Src_Data.Next_In_Project = No_Source then
9037                In_Tree.Projects.Table (Src_Data.Project).Last_Source := Source;
9038             end if;
9039          end if;
9040
9041       else
9042          Source := In_Tree.Projects.Table (Src_Data.Project).First_Source;
9043
9044          if Source = Id then
9045             In_Tree.Projects.Table (Src_Data.Project).First_Source :=
9046               Src_Data.Next_In_Project;
9047
9048             if Src_Data.Next_In_Project = No_Source then
9049                In_Tree.Projects.Table (Src_Data.Project).Last_Source :=
9050                  No_Source;
9051             end if;
9052
9053          else
9054             while In_Tree.Sources.Table (Source).Next_In_Project /= Id loop
9055                Source := In_Tree.Sources.Table (Source).Next_In_Project;
9056             end loop;
9057
9058             In_Tree.Sources.Table (Source).Next_In_Project :=
9059               Src_Data.Next_In_Project;
9060
9061             if Src_Data.Next_In_Project = No_Source then
9062                In_Tree.Projects.Table (Src_Data.Project).Last_Source := Source;
9063             end if;
9064          end if;
9065       end if;
9066
9067       --  Remove source from the language list
9068
9069       Source := In_Tree.Languages_Data.Table (Src_Data.Language).First_Source;
9070
9071       if Source = Id then
9072          In_Tree.Languages_Data.Table (Src_Data.Language).First_Source :=
9073            Src_Data.Next_In_Lang;
9074
9075       else
9076          while In_Tree.Sources.Table (Source).Next_In_Lang /= Id loop
9077             Source := In_Tree.Sources.Table (Source).Next_In_Lang;
9078          end loop;
9079
9080          In_Tree.Sources.Table (Source).Next_In_Lang :=
9081            Src_Data.Next_In_Lang;
9082       end if;
9083    end Remove_Source;
9084
9085    -----------------------
9086    -- Report_No_Sources --
9087    -----------------------
9088
9089    procedure Report_No_Sources
9090      (Project      : Project_Id;
9091       Lang_Name    : String;
9092       In_Tree      : Project_Tree_Ref;
9093       Location     : Source_Ptr;
9094       Continuation : Boolean := False)
9095    is
9096    begin
9097       case When_No_Sources is
9098          when Silent =>
9099             null;
9100
9101          when Warning | Error =>
9102             declare
9103                Msg : constant String :=
9104                        "<there are no " &
9105                        Lang_Name &
9106                        " sources in this project";
9107
9108             begin
9109                Error_Msg_Warn := When_No_Sources = Warning;
9110
9111                if Continuation then
9112                   Error_Msg
9113                     (Project, In_Tree, "\" & Msg, Location);
9114
9115                else
9116                   Error_Msg
9117                     (Project, In_Tree, Msg, Location);
9118                end if;
9119             end;
9120       end case;
9121    end Report_No_Sources;
9122
9123    ----------------------
9124    -- Show_Source_Dirs --
9125    ----------------------
9126
9127    procedure Show_Source_Dirs
9128      (Data    : Project_Data;
9129       In_Tree : Project_Tree_Ref)
9130    is
9131       Current : String_List_Id;
9132       Element : String_Element;
9133
9134    begin
9135       Write_Line ("Source_Dirs:");
9136
9137       Current := Data.Source_Dirs;
9138       while Current /= Nil_String loop
9139          Element := In_Tree.String_Elements.Table (Current);
9140          Write_Str  ("   ");
9141          Write_Line (Get_Name_String (Element.Value));
9142          Current := Element.Next;
9143       end loop;
9144
9145       Write_Line ("end Source_Dirs.");
9146    end Show_Source_Dirs;
9147
9148    -------------------------
9149    -- Warn_If_Not_Sources --
9150    -------------------------
9151
9152    --  comments needed in this body ???
9153
9154    procedure Warn_If_Not_Sources
9155      (Project     : Project_Id;
9156       In_Tree     : Project_Tree_Ref;
9157       Conventions : Array_Element_Id;
9158       Specs       : Boolean;
9159       Extending   : Boolean)
9160    is
9161       Conv          : Array_Element_Id;
9162       Unit          : Name_Id;
9163       The_Unit_Id   : Unit_Index;
9164       The_Unit_Data : Unit_Data;
9165       Location      : Source_Ptr;
9166
9167    begin
9168       Conv := Conventions;
9169       while Conv /= No_Array_Element loop
9170          Unit := In_Tree.Array_Elements.Table (Conv).Index;
9171          Error_Msg_Name_1 := Unit;
9172          Get_Name_String (Unit);
9173          To_Lower (Name_Buffer (1 .. Name_Len));
9174          Unit := Name_Find;
9175          The_Unit_Id := Units_Htable.Get (In_Tree.Units_HT, Unit);
9176          Location := In_Tree.Array_Elements.Table (Conv).Value.Location;
9177
9178          if The_Unit_Id = No_Unit_Index then
9179             Error_Msg (Project, In_Tree, "?unknown unit %%", Location);
9180
9181          else
9182             The_Unit_Data := In_Tree.Units.Table (The_Unit_Id);
9183             Error_Msg_Name_2 :=
9184               In_Tree.Array_Elements.Table (Conv).Value.Value;
9185
9186             if Specs then
9187                if not Check_Project
9188                  (The_Unit_Data.File_Names (Specification).Project,
9189                   Project, In_Tree, Extending)
9190                then
9191                   Error_Msg
9192                     (Project, In_Tree,
9193                      "?source of spec of unit %% (%%)" &
9194                      " cannot be found in this project",
9195                      Location);
9196                end if;
9197
9198             else
9199                if not Check_Project
9200                  (The_Unit_Data.File_Names (Body_Part).Project,
9201                   Project, In_Tree, Extending)
9202                then
9203                   Error_Msg
9204                     (Project, In_Tree,
9205                      "?source of body of unit %% (%%)" &
9206                      " cannot be found in this project",
9207                      Location);
9208                end if;
9209             end if;
9210          end if;
9211
9212          Conv := In_Tree.Array_Elements.Table (Conv).Next;
9213       end loop;
9214    end Warn_If_Not_Sources;
9215
9216 end Prj.Nmsc;