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       --  Check if Linker'Switches or Linker'Default_Switches are declared.
4108       --  Warn if they are declared, as it is a common error to think that
4109       --  library are "linked" with Linker switches.
4110
4111       if Data.Library then
4112          declare
4113             Linker_Package_Id : constant Package_Id :=
4114                                   Util.Value_Of
4115                                     (Name_Linker, Data.Decl.Packages, In_Tree);
4116             Linker_Package    : Package_Element;
4117             Switches          : Array_Element_Id := No_Array_Element;
4118
4119          begin
4120             if Linker_Package_Id /= No_Package then
4121                Linker_Package := In_Tree.Packages.Table (Linker_Package_Id);
4122
4123                Switches :=
4124                  Value_Of
4125                    (Name      => Name_Switches,
4126                     In_Arrays => Linker_Package.Decl.Arrays,
4127                     In_Tree   => In_Tree);
4128
4129                if Switches = No_Array_Element then
4130                   Switches :=
4131                     Value_Of
4132                       (Name      => Name_Default_Switches,
4133                        In_Arrays => Linker_Package.Decl.Arrays,
4134                        In_Tree   => In_Tree);
4135                end if;
4136
4137                if Switches /= No_Array_Element then
4138                   Error_Msg
4139                     (Project, In_Tree,
4140                      "?Linker switches not taken into account in library " &
4141                      "projects",
4142                      No_Location);
4143                end if;
4144             end if;
4145          end;
4146       end if;
4147
4148       if Data.Extends /= No_Project then
4149          In_Tree.Projects.Table (Data.Extends).Library := False;
4150       end if;
4151    end Check_Library_Attributes;
4152
4153    --------------------------
4154    -- Check_Package_Naming --
4155    --------------------------
4156
4157    procedure Check_Package_Naming
4158      (Project : Project_Id;
4159       In_Tree : Project_Tree_Ref;
4160       Data    : in out Project_Data)
4161    is
4162       Naming_Id : constant Package_Id :=
4163                     Util.Value_Of (Name_Naming, Data.Decl.Packages, In_Tree);
4164
4165       Naming    : Package_Element;
4166
4167    begin
4168       --  If there is a package Naming, we will put in Data.Naming
4169       --  what is in this package Naming.
4170
4171       if Naming_Id /= No_Package then
4172          Naming := In_Tree.Packages.Table (Naming_Id);
4173
4174          if Current_Verbosity = High then
4175             Write_Line ("Checking ""Naming"".");
4176          end if;
4177
4178          --  Check Spec_Suffix
4179
4180          declare
4181             Spec_Suffixs : Array_Element_Id :=
4182                              Util.Value_Of
4183                                (Name_Spec_Suffix,
4184                                 Naming.Decl.Arrays,
4185                                 In_Tree);
4186
4187             Suffix  : Array_Element_Id;
4188             Element : Array_Element;
4189             Suffix2 : Array_Element_Id;
4190
4191          begin
4192             --  If some suffixes have been specified, we make sure that
4193             --  for each language for which a default suffix has been
4194             --  specified, there is a suffix specified, either the one
4195             --  in the project file or if there were none, the default.
4196
4197             if Spec_Suffixs /= No_Array_Element then
4198                Suffix := Data.Naming.Spec_Suffix;
4199
4200                while Suffix /= No_Array_Element loop
4201                   Element :=
4202                     In_Tree.Array_Elements.Table (Suffix);
4203                   Suffix2 := Spec_Suffixs;
4204
4205                   while Suffix2 /= No_Array_Element loop
4206                      exit when In_Tree.Array_Elements.Table
4207                                 (Suffix2).Index = Element.Index;
4208                      Suffix2 := In_Tree.Array_Elements.Table
4209                                  (Suffix2).Next;
4210                   end loop;
4211
4212                   --  There is a registered default suffix, but no
4213                   --  suffix specified in the project file.
4214                   --  Add the default to the array.
4215
4216                   if Suffix2 = No_Array_Element then
4217                      Array_Element_Table.Increment_Last
4218                        (In_Tree.Array_Elements);
4219                      In_Tree.Array_Elements.Table
4220                        (Array_Element_Table.Last
4221                           (In_Tree.Array_Elements)) :=
4222                        (Index                => Element.Index,
4223                         Src_Index            => Element.Src_Index,
4224                         Index_Case_Sensitive => False,
4225                         Value                => Element.Value,
4226                         Next                 => Spec_Suffixs);
4227                      Spec_Suffixs := Array_Element_Table.Last
4228                                        (In_Tree.Array_Elements);
4229                   end if;
4230
4231                   Suffix := Element.Next;
4232                end loop;
4233
4234                --  Put the resulting array as the specification suffixes
4235
4236                Data.Naming.Spec_Suffix := Spec_Suffixs;
4237             end if;
4238          end;
4239
4240          declare
4241             Current : Array_Element_Id;
4242             Element : Array_Element;
4243
4244          begin
4245             Current := Data.Naming.Spec_Suffix;
4246             while Current /= No_Array_Element loop
4247                Element := In_Tree.Array_Elements.Table (Current);
4248                Get_Name_String (Element.Value.Value);
4249
4250                if Name_Len = 0 then
4251                   Error_Msg
4252                     (Project, In_Tree,
4253                      "Spec_Suffix cannot be empty",
4254                      Element.Value.Location);
4255                end if;
4256
4257                In_Tree.Array_Elements.Table (Current) := Element;
4258                Current := Element.Next;
4259             end loop;
4260          end;
4261
4262          --  Check Body_Suffix
4263
4264          declare
4265             Impl_Suffixs : Array_Element_Id :=
4266                              Util.Value_Of
4267                                (Name_Body_Suffix,
4268                                 Naming.Decl.Arrays,
4269                                 In_Tree);
4270
4271             Suffix  : Array_Element_Id;
4272             Element : Array_Element;
4273             Suffix2 : Array_Element_Id;
4274
4275          begin
4276             --  If some suffixes have been specified, we make sure that
4277             --  for each language for which a default suffix has been
4278             --  specified, there is a suffix specified, either the one
4279             --  in the project file or if there were none, the default.
4280
4281             if Impl_Suffixs /= No_Array_Element then
4282                Suffix := Data.Naming.Body_Suffix;
4283                while Suffix /= No_Array_Element loop
4284                   Element :=
4285                     In_Tree.Array_Elements.Table (Suffix);
4286
4287                   Suffix2 := Impl_Suffixs;
4288                   while Suffix2 /= No_Array_Element loop
4289                      exit when In_Tree.Array_Elements.Table
4290                                 (Suffix2).Index = Element.Index;
4291                      Suffix2 := In_Tree.Array_Elements.Table
4292                                   (Suffix2).Next;
4293                   end loop;
4294
4295                   --  There is a registered default suffix, but no suffix was
4296                   --  specified in the project file. Add default to the array.
4297
4298                   if Suffix2 = No_Array_Element then
4299                      Array_Element_Table.Increment_Last
4300                        (In_Tree.Array_Elements);
4301                      In_Tree.Array_Elements.Table
4302                        (Array_Element_Table.Last
4303                           (In_Tree.Array_Elements)) :=
4304                        (Index                => Element.Index,
4305                         Src_Index            => Element.Src_Index,
4306                         Index_Case_Sensitive => False,
4307                         Value                => Element.Value,
4308                         Next                 => Impl_Suffixs);
4309                      Impl_Suffixs := Array_Element_Table.Last
4310                                        (In_Tree.Array_Elements);
4311                   end if;
4312
4313                   Suffix := Element.Next;
4314                end loop;
4315
4316                --  Put the resulting array as the implementation suffixes
4317
4318                Data.Naming.Body_Suffix := Impl_Suffixs;
4319             end if;
4320          end;
4321
4322          declare
4323             Current : Array_Element_Id;
4324             Element : Array_Element;
4325
4326          begin
4327             Current := Data.Naming.Body_Suffix;
4328             while Current /= No_Array_Element loop
4329                Element := In_Tree.Array_Elements.Table (Current);
4330                Get_Name_String (Element.Value.Value);
4331
4332                if Name_Len = 0 then
4333                   Error_Msg
4334                     (Project, In_Tree,
4335                      "Body_Suffix cannot be empty",
4336                      Element.Value.Location);
4337                end if;
4338
4339                In_Tree.Array_Elements.Table (Current) := Element;
4340                Current := Element.Next;
4341             end loop;
4342          end;
4343
4344          --  Get the exceptions, if any
4345
4346          Data.Naming.Specification_Exceptions :=
4347            Util.Value_Of
4348              (Name_Specification_Exceptions,
4349               In_Arrays => Naming.Decl.Arrays,
4350               In_Tree   => In_Tree);
4351
4352          Data.Naming.Implementation_Exceptions :=
4353            Util.Value_Of
4354              (Name_Implementation_Exceptions,
4355               In_Arrays => Naming.Decl.Arrays,
4356               In_Tree   => In_Tree);
4357       end if;
4358    end Check_Package_Naming;
4359
4360    ---------------------------------
4361    -- Check_Programming_Languages --
4362    ---------------------------------
4363
4364    procedure Check_Programming_Languages
4365      (In_Tree : Project_Tree_Ref;
4366       Project : Project_Id;
4367       Data    : in out Project_Data)
4368    is
4369       Languages   : Variable_Value := Nil_Variable_Value;
4370       Def_Lang    : Variable_Value := Nil_Variable_Value;
4371       Def_Lang_Id : Name_Id;
4372
4373    begin
4374       Data.First_Language_Processing := No_Language_Index;
4375       Languages :=
4376         Prj.Util.Value_Of (Name_Languages, Data.Decl.Attributes, In_Tree);
4377       Def_Lang :=
4378         Prj.Util.Value_Of
4379           (Name_Default_Language, Data.Decl.Attributes, In_Tree);
4380       Data.Ada_Sources_Present   := Data.Source_Dirs /= Nil_String;
4381       Data.Other_Sources_Present := Data.Source_Dirs /= Nil_String;
4382
4383       if Data.Source_Dirs /= Nil_String then
4384
4385          --  Check if languages are specified in this project
4386
4387          if Languages.Default then
4388
4389             --  Attribute Languages is not specified. So, it defaults to
4390             --  a project of the default language only.
4391
4392             Name_List_Table.Increment_Last (In_Tree.Name_Lists);
4393             Data.Languages := Name_List_Table.Last (In_Tree.Name_Lists);
4394
4395             --  In Ada_Only mode, the default language is Ada
4396
4397             if Get_Mode = Ada_Only then
4398                In_Tree.Name_Lists.Table (Data.Languages) :=
4399                  (Name => Name_Ada, Next => No_Name_List);
4400
4401                --  Attribute Languages is not specified. So, it defaults to
4402                --  a project of language Ada only. No sources of languages
4403                --  other than Ada
4404
4405                Data.Other_Sources_Present := False;
4406
4407             else
4408                --  Fail if there is no default language defined
4409
4410                if Def_Lang.Default then
4411                   if not Default_Language_Is_Ada then
4412                      Error_Msg
4413                        (Project,
4414                         In_Tree,
4415                         "no languages defined for this project",
4416                         Data.Location);
4417                      Def_Lang_Id := No_Name;
4418                   else
4419                      Def_Lang_Id := Name_Ada;
4420                   end if;
4421
4422                else
4423                   Get_Name_String (Def_Lang.Value);
4424                   To_Lower (Name_Buffer (1 .. Name_Len));
4425                   Def_Lang_Id := Name_Find;
4426                end if;
4427
4428                if Def_Lang_Id /=  No_Name then
4429                   In_Tree.Name_Lists.Table (Data.Languages) :=
4430                     (Name => Def_Lang_Id, Next => No_Name_List);
4431
4432                   Language_Data_Table.Increment_Last (In_Tree.Languages_Data);
4433
4434                   Data.First_Language_Processing :=
4435                     Language_Data_Table.Last (In_Tree.Languages_Data);
4436                   In_Tree.Languages_Data.Table
4437                     (Data.First_Language_Processing) := No_Language_Data;
4438                   In_Tree.Languages_Data.Table
4439                     (Data.First_Language_Processing).Name := Def_Lang_Id;
4440                   Get_Name_String (Def_Lang_Id);
4441                   Name_Buffer (1) := GNAT.Case_Util.To_Upper (Name_Buffer (1));
4442                   In_Tree.Languages_Data.Table
4443                     (Data.First_Language_Processing).Display_Name := Name_Find;
4444
4445                   if Def_Lang_Id = Name_Ada then
4446                      In_Tree.Languages_Data.Table
4447                        (Data.First_Language_Processing).Config.Kind
4448                        := Unit_Based;
4449                      In_Tree.Languages_Data.Table
4450                        (Data.First_Language_Processing).Config.Dependency_Kind
4451                        := ALI_File;
4452                      Data.Unit_Based_Language_Name := Name_Ada;
4453                      Data.Unit_Based_Language_Index :=
4454                        Data.First_Language_Processing;
4455                   else
4456                      In_Tree.Languages_Data.Table
4457                        (Data.First_Language_Processing).Config.Kind
4458                        := File_Based;
4459                   end if;
4460                end if;
4461             end if;
4462
4463          else
4464             declare
4465                Current           : String_List_Id := Languages.Values;
4466                Element           : String_Element;
4467                Lang_Name         : Name_Id;
4468                Index             : Language_Index;
4469                Lang_Data         : Language_Data;
4470                NL_Id             : Name_List_Index := No_Name_List;
4471
4472             begin
4473                --  Assume there are no language declared
4474
4475                Data.Ada_Sources_Present := False;
4476                Data.Other_Sources_Present := False;
4477
4478                --  If there are no languages declared, there are no sources
4479
4480                if Current = Nil_String then
4481                   Data.Source_Dirs := Nil_String;
4482
4483                   if Data.Qualifier = Standard then
4484                      Error_Msg
4485                        (Project,
4486                         In_Tree,
4487                         "a standard project cannot have no language declared",
4488                         Languages.Location);
4489                   end if;
4490
4491                else
4492                   --  Look through all the languages specified in attribute
4493                   --  Languages.
4494
4495                   while Current /= Nil_String loop
4496                      Element :=
4497                        In_Tree.String_Elements.Table (Current);
4498                      Get_Name_String (Element.Value);
4499                      To_Lower (Name_Buffer (1 .. Name_Len));
4500                      Lang_Name := Name_Find;
4501
4502                      NL_Id := Data.Languages;
4503                      while NL_Id /= No_Name_List loop
4504                         exit when
4505                           Lang_Name = In_Tree.Name_Lists.Table (NL_Id).Name;
4506                         NL_Id := In_Tree.Name_Lists.Table (NL_Id).Next;
4507                      end loop;
4508
4509                      if NL_Id = No_Name_List then
4510                         Name_List_Table.Increment_Last (In_Tree.Name_Lists);
4511
4512                         if Data.Languages = No_Name_List then
4513                            Data.Languages :=
4514                              Name_List_Table.Last (In_Tree.Name_Lists);
4515
4516                         else
4517                            NL_Id := Data.Languages;
4518                            while In_Tree.Name_Lists.Table (NL_Id).Next /=
4519                                    No_Name_List
4520                            loop
4521                               NL_Id := In_Tree.Name_Lists.Table (NL_Id).Next;
4522                            end loop;
4523
4524                            In_Tree.Name_Lists.Table (NL_Id).Next :=
4525                              Name_List_Table.Last (In_Tree.Name_Lists);
4526                         end if;
4527
4528                         NL_Id := Name_List_Table.Last (In_Tree.Name_Lists);
4529                         In_Tree.Name_Lists.Table (NL_Id) :=
4530                           (Lang_Name, No_Name_List);
4531
4532                         if Get_Mode = Ada_Only then
4533                            --  Check for language Ada
4534
4535                            if Lang_Name = Name_Ada then
4536                               Data.Ada_Sources_Present := True;
4537
4538                            else
4539                               Data.Other_Sources_Present := True;
4540                            end if;
4541
4542                         else
4543                            Language_Data_Table.Increment_Last
4544                                                  (In_Tree.Languages_Data);
4545                            Index :=
4546                              Language_Data_Table.Last (In_Tree.Languages_Data);
4547                            Lang_Data.Name := Lang_Name;
4548                            Lang_Data.Display_Name := Element.Value;
4549                            Lang_Data.Next := Data.First_Language_Processing;
4550
4551                            if Lang_Name = Name_Ada then
4552                               Lang_Data.Config.Kind := Unit_Based;
4553                               Lang_Data.Config.Dependency_Kind := ALI_File;
4554                               Data.Unit_Based_Language_Name := Name_Ada;
4555                               Data.Unit_Based_Language_Index := Index;
4556
4557                            else
4558                               Lang_Data.Config.Kind := File_Based;
4559                               Lang_Data.Config.Dependency_Kind := None;
4560                            end if;
4561
4562                            In_Tree.Languages_Data.Table (Index) := Lang_Data;
4563                            Data.First_Language_Processing := Index;
4564                         end if;
4565                      end if;
4566
4567                      Current := Element.Next;
4568                   end loop;
4569                end if;
4570             end;
4571          end if;
4572       end if;
4573    end Check_Programming_Languages;
4574
4575    -------------------
4576    -- Check_Project --
4577    -------------------
4578
4579    function Check_Project
4580      (P            : Project_Id;
4581       Root_Project : Project_Id;
4582       In_Tree      : Project_Tree_Ref;
4583       Extending    : Boolean) return Boolean
4584    is
4585    begin
4586       if P = Root_Project then
4587          return True;
4588
4589       elsif Extending then
4590          declare
4591             Data : Project_Data := In_Tree.Projects.Table (Root_Project);
4592
4593          begin
4594             while Data.Extends /= No_Project loop
4595                if P = Data.Extends then
4596                   return True;
4597                end if;
4598
4599                Data := In_Tree.Projects.Table (Data.Extends);
4600             end loop;
4601          end;
4602       end if;
4603
4604       return False;
4605    end Check_Project;
4606
4607    -------------------------------
4608    -- Check_Stand_Alone_Library --
4609    -------------------------------
4610
4611    procedure Check_Stand_Alone_Library
4612      (Project     : Project_Id;
4613       In_Tree     : Project_Tree_Ref;
4614       Data        : in out Project_Data;
4615       Current_Dir : String;
4616       Extending   : Boolean)
4617    is
4618       Lib_Interfaces      : constant Prj.Variable_Value :=
4619                               Prj.Util.Value_Of
4620                                 (Snames.Name_Library_Interface,
4621                                  Data.Decl.Attributes,
4622                                  In_Tree);
4623
4624       Lib_Auto_Init       : constant Prj.Variable_Value :=
4625                               Prj.Util.Value_Of
4626                                 (Snames.Name_Library_Auto_Init,
4627                                  Data.Decl.Attributes,
4628                                  In_Tree);
4629
4630       Lib_Src_Dir         : constant Prj.Variable_Value :=
4631                               Prj.Util.Value_Of
4632                                 (Snames.Name_Library_Src_Dir,
4633                                  Data.Decl.Attributes,
4634                                  In_Tree);
4635
4636       Lib_Symbol_File     : constant Prj.Variable_Value :=
4637                               Prj.Util.Value_Of
4638                                 (Snames.Name_Library_Symbol_File,
4639                                  Data.Decl.Attributes,
4640                                  In_Tree);
4641
4642       Lib_Symbol_Policy   : constant Prj.Variable_Value :=
4643                               Prj.Util.Value_Of
4644                                 (Snames.Name_Library_Symbol_Policy,
4645                                  Data.Decl.Attributes,
4646                                  In_Tree);
4647
4648       Lib_Ref_Symbol_File : constant Prj.Variable_Value :=
4649                               Prj.Util.Value_Of
4650                                 (Snames.Name_Library_Reference_Symbol_File,
4651                                  Data.Decl.Attributes,
4652                                  In_Tree);
4653
4654       Auto_Init_Supported : Boolean;
4655       OK                  : Boolean := True;
4656       Source              : Source_Id;
4657       Next_Proj           : Project_Id;
4658
4659    begin
4660       if Get_Mode = Multi_Language then
4661          Auto_Init_Supported := Data.Config.Auto_Init_Supported;
4662       else
4663          Auto_Init_Supported :=
4664            MLib.Tgt.Standalone_Library_Auto_Init_Is_Supported;
4665       end if;
4666
4667       pragma Assert (Lib_Interfaces.Kind = List);
4668
4669       --  It is a stand-alone library project file if attribute
4670       --  Library_Interface is defined.
4671
4672       if not Lib_Interfaces.Default then
4673          SAL_Library : declare
4674             Interfaces     : String_List_Id := Lib_Interfaces.Values;
4675             Interface_ALIs : String_List_Id := Nil_String;
4676             Unit           : Name_Id;
4677             The_Unit_Id    : Unit_Index;
4678             The_Unit_Data  : Unit_Data;
4679
4680             procedure Add_ALI_For (Source : File_Name_Type);
4681             --  Add an ALI file name to the list of Interface ALIs
4682
4683             -----------------
4684             -- Add_ALI_For --
4685             -----------------
4686
4687             procedure Add_ALI_For (Source : File_Name_Type) is
4688             begin
4689                Get_Name_String (Source);
4690
4691                declare
4692                   ALI         : constant String :=
4693                                   ALI_File_Name (Name_Buffer (1 .. Name_Len));
4694                   ALI_Name_Id : Name_Id;
4695
4696                begin
4697                   Name_Len := ALI'Length;
4698                   Name_Buffer (1 .. Name_Len) := ALI;
4699                   ALI_Name_Id := Name_Find;
4700
4701                   String_Element_Table.Increment_Last
4702                     (In_Tree.String_Elements);
4703                   In_Tree.String_Elements.Table
4704                     (String_Element_Table.Last
4705                       (In_Tree.String_Elements)) :=
4706                     (Value         => ALI_Name_Id,
4707                      Index         => 0,
4708                      Display_Value => ALI_Name_Id,
4709                      Location      =>
4710                        In_Tree.String_Elements.Table
4711                          (Interfaces).Location,
4712                      Flag          => False,
4713                      Next          => Interface_ALIs);
4714                   Interface_ALIs := String_Element_Table.Last
4715                                       (In_Tree.String_Elements);
4716                end;
4717             end Add_ALI_For;
4718
4719          --  Start of processing for SAL_Library
4720
4721          begin
4722             Data.Standalone_Library := True;
4723
4724             --  Library_Interface cannot be an empty list
4725
4726             if Interfaces = Nil_String then
4727                Error_Msg
4728                  (Project, In_Tree,
4729                   "Library_Interface cannot be an empty list",
4730                   Lib_Interfaces.Location);
4731             end if;
4732
4733             --  Process each unit name specified in the attribute
4734             --  Library_Interface.
4735
4736             while Interfaces /= Nil_String loop
4737                Get_Name_String
4738                  (In_Tree.String_Elements.Table (Interfaces).Value);
4739                To_Lower (Name_Buffer (1 .. Name_Len));
4740
4741                if Name_Len = 0 then
4742                   Error_Msg
4743                     (Project, In_Tree,
4744                      "an interface cannot be an empty string",
4745                      In_Tree.String_Elements.Table (Interfaces).Location);
4746
4747                else
4748                   Unit := Name_Find;
4749                   Error_Msg_Name_1 := Unit;
4750
4751                   if Get_Mode = Ada_Only then
4752                      The_Unit_Id :=
4753                        Units_Htable.Get (In_Tree.Units_HT, Unit);
4754
4755                      if The_Unit_Id = No_Unit_Index then
4756                         Error_Msg
4757                           (Project, In_Tree,
4758                            "unknown unit %%",
4759                            In_Tree.String_Elements.Table
4760                              (Interfaces).Location);
4761
4762                      else
4763                         --  Check that the unit is part of the project
4764
4765                         The_Unit_Data :=
4766                           In_Tree.Units.Table (The_Unit_Id);
4767
4768                         if The_Unit_Data.File_Names (Body_Part).Name /= No_File
4769                           and then The_Unit_Data.File_Names
4770                                      (Body_Part).Path.Name /= Slash
4771                         then
4772                            if Check_Project
4773                              (The_Unit_Data.File_Names (Body_Part).Project,
4774                               Project, In_Tree, Extending)
4775                            then
4776                               --  There is a body for this unit.
4777                               --  If there is no spec, we need to check
4778                               --  that it is not a subunit.
4779
4780                               if The_Unit_Data.File_Names
4781                                 (Specification).Name = No_File
4782                               then
4783                                  declare
4784                                     Src_Ind : Source_File_Index;
4785
4786                                  begin
4787                                     Src_Ind := Sinput.P.Load_Project_File
4788                                       (Get_Name_String
4789                                          (The_Unit_Data.File_Names
4790                                             (Body_Part).Path.Name));
4791
4792                                     if Sinput.P.Source_File_Is_Subunit
4793                                       (Src_Ind)
4794                                     then
4795                                        Error_Msg
4796                                          (Project, In_Tree,
4797                                           "%% is a subunit; " &
4798                                           "it cannot be an interface",
4799                                           In_Tree.
4800                                             String_Elements.Table
4801                                               (Interfaces).Location);
4802                                     end if;
4803                                  end;
4804                               end if;
4805
4806                               --  The unit is not a subunit, so we add
4807                               --  to the Interface ALIs the ALI file
4808                               --  corresponding to the body.
4809
4810                               Add_ALI_For
4811                                 (The_Unit_Data.File_Names (Body_Part).Name);
4812
4813                            else
4814                               Error_Msg
4815                                 (Project, In_Tree,
4816                                  "%% is not an unit of this project",
4817                                  In_Tree.String_Elements.Table
4818                                    (Interfaces).Location);
4819                            end if;
4820
4821                         elsif The_Unit_Data.File_Names
4822                           (Specification).Name /= No_File
4823                           and then The_Unit_Data.File_Names
4824                             (Specification).Path.Name /= Slash
4825                           and then Check_Project
4826                             (The_Unit_Data.File_Names
4827                                  (Specification).Project,
4828                              Project, In_Tree, Extending)
4829
4830                         then
4831                            --  The unit is part of the project, it has
4832                            --  a spec, but no body. We add to the Interface
4833                            --  ALIs the ALI file corresponding to the spec.
4834
4835                            Add_ALI_For
4836                              (The_Unit_Data.File_Names (Specification).Name);
4837
4838                         else
4839                            Error_Msg
4840                              (Project, In_Tree,
4841                               "%% is not an unit of this project",
4842                               In_Tree.String_Elements.Table
4843                                 (Interfaces).Location);
4844                         end if;
4845                      end if;
4846
4847                   else
4848                      --  Multi_Language mode
4849
4850                      Next_Proj := Data.Extends;
4851                      Source := Data.First_Source;
4852
4853                      loop
4854                         while Source /= No_Source and then
4855                               In_Tree.Sources.Table (Source).Unit /= Unit
4856                         loop
4857                            Source :=
4858                              In_Tree.Sources.Table (Source).Next_In_Project;
4859                         end loop;
4860
4861                         exit when Source /= No_Source or else
4862                                   Next_Proj = No_Project;
4863
4864                         Source :=
4865                           In_Tree.Projects.Table (Next_Proj).First_Source;
4866                         Next_Proj :=
4867                           In_Tree.Projects.Table (Next_Proj).Extends;
4868                      end loop;
4869
4870                      if Source /= No_Source then
4871                         if In_Tree.Sources.Table (Source).Kind = Sep then
4872                            Source := No_Source;
4873
4874                         elsif In_Tree.Sources.Table (Source).Kind = Spec
4875                           and then
4876                           In_Tree.Sources.Table (Source).Other_Part /=
4877                           No_Source
4878                         then
4879                            Source := In_Tree.Sources.Table (Source).Other_Part;
4880                         end if;
4881                      end if;
4882
4883                      if Source /= No_Source then
4884                         if In_Tree.Sources.Table (Source).Project /= Project
4885                           and then
4886                             not Is_Extending
4887                               (Project,
4888                                In_Tree.Sources.Table (Source).Project,
4889                                In_Tree)
4890                         then
4891                            Source := No_Source;
4892                         end if;
4893                      end if;
4894
4895                      if Source = No_Source then
4896                            Error_Msg
4897                              (Project, In_Tree,
4898                               "%% is not an unit of this project",
4899                               In_Tree.String_Elements.Table
4900                                 (Interfaces).Location);
4901
4902                      else
4903                         if In_Tree.Sources.Table (Source).Kind = Spec and then
4904                           In_Tree.Sources.Table (Source).Other_Part /=
4905                             No_Source
4906                         then
4907                            Source := In_Tree.Sources.Table (Source).Other_Part;
4908                         end if;
4909
4910                         String_Element_Table.Increment_Last
4911                           (In_Tree.String_Elements);
4912                         In_Tree.String_Elements.Table
4913                           (String_Element_Table.Last
4914                              (In_Tree.String_Elements)) :=
4915                           (Value         =>
4916                              Name_Id (In_Tree.Sources.Table (Source).Dep_Name),
4917                            Index         => 0,
4918                            Display_Value =>
4919                              Name_Id (In_Tree.Sources.Table (Source).Dep_Name),
4920                            Location      =>
4921                              In_Tree.String_Elements.Table
4922                                (Interfaces).Location,
4923                            Flag          => False,
4924                            Next          => Interface_ALIs);
4925                         Interface_ALIs := String_Element_Table.Last
4926                           (In_Tree.String_Elements);
4927                      end if;
4928
4929                   end if;
4930
4931                end if;
4932
4933                Interfaces :=
4934                  In_Tree.String_Elements.Table (Interfaces).Next;
4935             end loop;
4936
4937             --  Put the list of Interface ALIs in the project data
4938
4939             Data.Lib_Interface_ALIs := Interface_ALIs;
4940
4941             --  Check value of attribute Library_Auto_Init and set
4942             --  Lib_Auto_Init accordingly.
4943
4944             if Lib_Auto_Init.Default then
4945
4946                --  If no attribute Library_Auto_Init is declared, then set auto
4947                --  init only if it is supported.
4948
4949                Data.Lib_Auto_Init := Auto_Init_Supported;
4950
4951             else
4952                Get_Name_String (Lib_Auto_Init.Value);
4953                To_Lower (Name_Buffer (1 .. Name_Len));
4954
4955                if Name_Buffer (1 .. Name_Len) = "false" then
4956                   Data.Lib_Auto_Init := False;
4957
4958                elsif Name_Buffer (1 .. Name_Len) = "true" then
4959                   if Auto_Init_Supported then
4960                      Data.Lib_Auto_Init := True;
4961
4962                   else
4963                      --  Library_Auto_Init cannot be "true" if auto init is not
4964                      --  supported
4965
4966                      Error_Msg
4967                        (Project, In_Tree,
4968                         "library auto init not supported " &
4969                         "on this platform",
4970                         Lib_Auto_Init.Location);
4971                   end if;
4972
4973                else
4974                   Error_Msg
4975                     (Project, In_Tree,
4976                      "invalid value for attribute Library_Auto_Init",
4977                      Lib_Auto_Init.Location);
4978                end if;
4979             end if;
4980          end SAL_Library;
4981
4982          --  If attribute Library_Src_Dir is defined and not the empty string,
4983          --  check if the directory exist and is not the object directory or
4984          --  one of the source directories. This is the directory where copies
4985          --  of the interface sources will be copied. Note that this directory
4986          --  may be the library directory.
4987
4988          if Lib_Src_Dir.Value /= Empty_String then
4989             declare
4990                Dir_Id : constant File_Name_Type :=
4991                           File_Name_Type (Lib_Src_Dir.Value);
4992
4993             begin
4994                Locate_Directory
4995                  (Project,
4996                   In_Tree,
4997                   Dir_Id,
4998                   Data.Directory.Display_Name,
4999                   Data.Library_Src_Dir.Name,
5000                   Data.Library_Src_Dir.Display_Name,
5001                   Create => "library source copy",
5002                   Current_Dir => Current_Dir,
5003                   Location => Lib_Src_Dir.Location);
5004
5005                --  If directory does not exist, report an error
5006
5007                if Data.Library_Src_Dir = No_Path_Information then
5008
5009                   --  Get the absolute name of the library directory that does
5010                   --  not exist, to report an error.
5011
5012                   declare
5013                      Dir_Name : constant String :=
5014                                   Get_Name_String (Dir_Id);
5015
5016                   begin
5017                      if Is_Absolute_Path (Dir_Name) then
5018                         Err_Vars.Error_Msg_File_1 := Dir_Id;
5019
5020                      else
5021                         Get_Name_String (Data.Directory.Name);
5022
5023                         if Name_Buffer (Name_Len) /=
5024                           Directory_Separator
5025                         then
5026                            Name_Len := Name_Len + 1;
5027                            Name_Buffer (Name_Len) :=
5028                              Directory_Separator;
5029                         end if;
5030
5031                         Name_Buffer
5032                           (Name_Len + 1 ..
5033                              Name_Len + Dir_Name'Length) :=
5034                             Dir_Name;
5035                         Name_Len := Name_Len + Dir_Name'Length;
5036                         Err_Vars.Error_Msg_Name_1 := Name_Find;
5037                      end if;
5038
5039                      --  Report the error
5040
5041                      Error_Msg_File_1 := Dir_Id;
5042                      Error_Msg
5043                        (Project, In_Tree,
5044                         "Directory { does not exist",
5045                         Lib_Src_Dir.Location);
5046                   end;
5047
5048                   --  Report error if it is the same as the object directory
5049
5050                elsif Data.Library_Src_Dir = Data.Object_Directory then
5051                   Error_Msg
5052                     (Project, In_Tree,
5053                      "directory to copy interfaces cannot be " &
5054                      "the object directory",
5055                      Lib_Src_Dir.Location);
5056                   Data.Library_Src_Dir := No_Path_Information;
5057
5058                else
5059                   declare
5060                      Src_Dirs : String_List_Id;
5061                      Src_Dir  : String_Element;
5062
5063                   begin
5064                      --  Interface copy directory cannot be one of the source
5065                      --  directory of the current project.
5066
5067                      Src_Dirs := Data.Source_Dirs;
5068                      while Src_Dirs /= Nil_String loop
5069                         Src_Dir := In_Tree.String_Elements.Table (Src_Dirs);
5070
5071                         --  Report error if it is one of the source directories
5072
5073                         if Data.Library_Src_Dir.Name =
5074                           Path_Name_Type (Src_Dir.Value)
5075                         then
5076                            Error_Msg
5077                              (Project, In_Tree,
5078                               "directory to copy interfaces cannot " &
5079                               "be one of the source directories",
5080                               Lib_Src_Dir.Location);
5081                            Data.Library_Src_Dir := No_Path_Information;
5082                            exit;
5083                         end if;
5084
5085                         Src_Dirs := Src_Dir.Next;
5086                      end loop;
5087
5088                      if Data.Library_Src_Dir /= No_Path_Information then
5089
5090                         --  It cannot be a source directory of any other
5091                         --  project either.
5092
5093                         Project_Loop : for Pid in 1 ..
5094                           Project_Table.Last (In_Tree.Projects)
5095                         loop
5096                            Src_Dirs :=
5097                              In_Tree.Projects.Table (Pid).Source_Dirs;
5098                            Dir_Loop : while Src_Dirs /= Nil_String loop
5099                               Src_Dir :=
5100                                 In_Tree.String_Elements.Table (Src_Dirs);
5101
5102                               --  Report error if it is one of the source
5103                               --  directories
5104
5105                               if Data.Library_Src_Dir.Name =
5106                                 Path_Name_Type (Src_Dir.Value)
5107                               then
5108                                  Error_Msg_File_1 :=
5109                                    File_Name_Type (Src_Dir.Value);
5110                                  Error_Msg_Name_1 :=
5111                                    In_Tree.Projects.Table (Pid).Name;
5112                                  Error_Msg
5113                                    (Project, In_Tree,
5114                                     "directory to copy interfaces cannot " &
5115                                     "be the same as source directory { of " &
5116                                     "project %%",
5117                                     Lib_Src_Dir.Location);
5118                                  Data.Library_Src_Dir := No_Path_Information;
5119                                  exit Project_Loop;
5120                               end if;
5121
5122                               Src_Dirs := Src_Dir.Next;
5123                            end loop Dir_Loop;
5124                         end loop Project_Loop;
5125                      end if;
5126                   end;
5127
5128                   --  In high verbosity, if there is a valid Library_Src_Dir,
5129                   --  display its path name.
5130
5131                   if Data.Library_Src_Dir /= No_Path_Information
5132                     and then Current_Verbosity = High
5133                   then
5134                      Write_Str ("Directory to copy interfaces =""");
5135                      Write_Str (Get_Name_String (Data.Library_Src_Dir.Name));
5136                      Write_Line ("""");
5137                   end if;
5138                end if;
5139             end;
5140          end if;
5141
5142          --  Check the symbol related attributes
5143
5144          --  First, the symbol policy
5145
5146          if not Lib_Symbol_Policy.Default then
5147             declare
5148                Value : constant String :=
5149                  To_Lower
5150                    (Get_Name_String (Lib_Symbol_Policy.Value));
5151
5152             begin
5153                --  Symbol policy must hove one of a limited number of values
5154
5155                if Value = "autonomous" or else Value = "default" then
5156                   Data.Symbol_Data.Symbol_Policy := Autonomous;
5157
5158                elsif Value = "compliant" then
5159                   Data.Symbol_Data.Symbol_Policy := Compliant;
5160
5161                elsif Value = "controlled" then
5162                   Data.Symbol_Data.Symbol_Policy := Controlled;
5163
5164                elsif Value = "restricted" then
5165                   Data.Symbol_Data.Symbol_Policy := Restricted;
5166
5167                elsif Value = "direct" then
5168                   Data.Symbol_Data.Symbol_Policy := Direct;
5169
5170                else
5171                   Error_Msg
5172                     (Project, In_Tree,
5173                      "illegal value for Library_Symbol_Policy",
5174                      Lib_Symbol_Policy.Location);
5175                end if;
5176             end;
5177          end if;
5178
5179          --  If attribute Library_Symbol_File is not specified, symbol policy
5180          --  cannot be Restricted.
5181
5182          if Lib_Symbol_File.Default then
5183             if Data.Symbol_Data.Symbol_Policy = Restricted then
5184                Error_Msg
5185                  (Project, In_Tree,
5186                   "Library_Symbol_File needs to be defined when " &
5187                   "symbol policy is Restricted",
5188                   Lib_Symbol_Policy.Location);
5189             end if;
5190
5191          else
5192             --  Library_Symbol_File is defined
5193
5194             Data.Symbol_Data.Symbol_File :=
5195               Path_Name_Type (Lib_Symbol_File.Value);
5196
5197             Get_Name_String (Lib_Symbol_File.Value);
5198
5199             if Name_Len = 0 then
5200                Error_Msg
5201                  (Project, In_Tree,
5202                   "symbol file name cannot be an empty string",
5203                   Lib_Symbol_File.Location);
5204
5205             else
5206                OK := not Is_Absolute_Path (Name_Buffer (1 .. Name_Len));
5207
5208                if OK then
5209                   for J in 1 .. Name_Len loop
5210                      if Name_Buffer (J) = '/'
5211                        or else Name_Buffer (J) = Directory_Separator
5212                      then
5213                         OK := False;
5214                         exit;
5215                      end if;
5216                   end loop;
5217                end if;
5218
5219                if not OK then
5220                   Error_Msg_File_1 := File_Name_Type (Lib_Symbol_File.Value);
5221                   Error_Msg
5222                     (Project, In_Tree,
5223                      "symbol file name { is illegal. " &
5224                      "Name cannot include directory info.",
5225                      Lib_Symbol_File.Location);
5226                end if;
5227             end if;
5228          end if;
5229
5230          --  If attribute Library_Reference_Symbol_File is not defined,
5231          --  symbol policy cannot be Compliant or Controlled.
5232
5233          if Lib_Ref_Symbol_File.Default then
5234             if Data.Symbol_Data.Symbol_Policy = Compliant
5235               or else Data.Symbol_Data.Symbol_Policy = Controlled
5236             then
5237                Error_Msg
5238                  (Project, In_Tree,
5239                   "a reference symbol file need to be defined",
5240                   Lib_Symbol_Policy.Location);
5241             end if;
5242
5243          else
5244             --  Library_Reference_Symbol_File is defined, check file exists
5245
5246             Data.Symbol_Data.Reference :=
5247               Path_Name_Type (Lib_Ref_Symbol_File.Value);
5248
5249             Get_Name_String (Lib_Ref_Symbol_File.Value);
5250
5251             if Name_Len = 0 then
5252                Error_Msg
5253                  (Project, In_Tree,
5254                   "reference symbol file name cannot be an empty string",
5255                   Lib_Symbol_File.Location);
5256
5257             else
5258                if not Is_Absolute_Path (Name_Buffer (1 .. Name_Len)) then
5259                   Name_Len := 0;
5260                   Add_Str_To_Name_Buffer
5261                     (Get_Name_String (Data.Directory.Name));
5262                   Add_Char_To_Name_Buffer (Directory_Separator);
5263                   Add_Str_To_Name_Buffer
5264                     (Get_Name_String (Lib_Ref_Symbol_File.Value));
5265                   Data.Symbol_Data.Reference := Name_Find;
5266                end if;
5267
5268                if not Is_Regular_File
5269                  (Get_Name_String (Data.Symbol_Data.Reference))
5270                then
5271                   Error_Msg_File_1 :=
5272                     File_Name_Type (Lib_Ref_Symbol_File.Value);
5273
5274                   --  For controlled and direct symbol policies, it is an error
5275                   --  if the reference symbol file does not exist. For other
5276                   --  symbol policies, this is just a warning
5277
5278                   Error_Msg_Warn :=
5279                     Data.Symbol_Data.Symbol_Policy /= Controlled
5280                     and then Data.Symbol_Data.Symbol_Policy /= Direct;
5281
5282                   Error_Msg
5283                     (Project, In_Tree,
5284                      "<library reference symbol file { does not exist",
5285                      Lib_Ref_Symbol_File.Location);
5286
5287                   --  In addition in the non-controlled case, if symbol policy
5288                   --  is Compliant, it is changed to Autonomous, because there
5289                   --  is no reference to check against, and we don't want to
5290                   --  fail in this case.
5291
5292                   if Data.Symbol_Data.Symbol_Policy /= Controlled then
5293                      if Data.Symbol_Data.Symbol_Policy = Compliant then
5294                         Data.Symbol_Data.Symbol_Policy := Autonomous;
5295                      end if;
5296                   end if;
5297                end if;
5298
5299                --  If both the reference symbol file and the symbol file are
5300                --  defined, then check that they are not the same file.
5301
5302                if Data.Symbol_Data.Symbol_File /= No_Path then
5303                   Get_Name_String (Data.Symbol_Data.Symbol_File);
5304
5305                   if Name_Len > 0 then
5306                      declare
5307                         Symb_Path : constant String :=
5308                                       Normalize_Pathname
5309                                         (Get_Name_String
5310                                            (Data.Object_Directory.Name) &
5311                                          Directory_Separator &
5312                                          Name_Buffer (1 .. Name_Len),
5313                                          Directory     => Current_Dir,
5314                                          Resolve_Links =>
5315                                            Opt.Follow_Links_For_Files);
5316                         Ref_Path  : constant String :=
5317                                       Normalize_Pathname
5318                                         (Get_Name_String
5319                                            (Data.Symbol_Data.Reference),
5320                                          Directory     => Current_Dir,
5321                                          Resolve_Links =>
5322                                            Opt.Follow_Links_For_Files);
5323                      begin
5324                         if Symb_Path = Ref_Path then
5325                            Error_Msg
5326                              (Project, In_Tree,
5327                               "library reference symbol file and library" &
5328                               " symbol file cannot be the same file",
5329                               Lib_Ref_Symbol_File.Location);
5330                         end if;
5331                      end;
5332                   end if;
5333                end if;
5334             end if;
5335          end if;
5336       end if;
5337    end Check_Stand_Alone_Library;
5338
5339    ----------------------------
5340    -- Compute_Directory_Last --
5341    ----------------------------
5342
5343    function Compute_Directory_Last (Dir : String) return Natural is
5344    begin
5345       if Dir'Length > 1
5346         and then (Dir (Dir'Last - 1) = Directory_Separator
5347                   or else Dir (Dir'Last - 1) = '/')
5348       then
5349          return Dir'Last - 1;
5350       else
5351          return Dir'Last;
5352       end if;
5353    end Compute_Directory_Last;
5354
5355    ---------------
5356    -- Error_Msg --
5357    ---------------
5358
5359    procedure Error_Msg
5360      (Project       : Project_Id;
5361       In_Tree       : Project_Tree_Ref;
5362       Msg           : String;
5363       Flag_Location : Source_Ptr)
5364    is
5365       Real_Location : Source_Ptr := Flag_Location;
5366       Error_Buffer  : String (1 .. 5_000);
5367       Error_Last    : Natural := 0;
5368       Name_Number   : Natural := 0;
5369       File_Number   : Natural := 0;
5370       First         : Positive := Msg'First;
5371       Index         : Positive;
5372
5373       procedure Add (C : Character);
5374       --  Add a character to the buffer
5375
5376       procedure Add (S : String);
5377       --  Add a string to the buffer
5378
5379       procedure Add_Name;
5380       --  Add a name to the buffer
5381
5382       procedure Add_File;
5383       --  Add a file name to the buffer
5384
5385       ---------
5386       -- Add --
5387       ---------
5388
5389       procedure Add (C : Character) is
5390       begin
5391          Error_Last := Error_Last + 1;
5392          Error_Buffer (Error_Last) := C;
5393       end Add;
5394
5395       procedure Add (S : String) is
5396       begin
5397          Error_Buffer (Error_Last + 1 .. Error_Last + S'Length) := S;
5398          Error_Last := Error_Last + S'Length;
5399       end Add;
5400
5401       --------------
5402       -- Add_File --
5403       --------------
5404
5405       procedure Add_File is
5406          File : File_Name_Type;
5407
5408       begin
5409          Add ('"');
5410          File_Number := File_Number + 1;
5411
5412          case File_Number is
5413             when 1 =>
5414                File := Err_Vars.Error_Msg_File_1;
5415             when 2 =>
5416                File := Err_Vars.Error_Msg_File_2;
5417             when 3 =>
5418                File := Err_Vars.Error_Msg_File_3;
5419             when others =>
5420                null;
5421          end case;
5422
5423          Get_Name_String (File);
5424          Add (Name_Buffer (1 .. Name_Len));
5425          Add ('"');
5426       end Add_File;
5427
5428       --------------
5429       -- Add_Name --
5430       --------------
5431
5432       procedure Add_Name is
5433          Name : Name_Id;
5434
5435       begin
5436          Add ('"');
5437          Name_Number := Name_Number + 1;
5438
5439          case Name_Number is
5440             when 1 =>
5441                Name := Err_Vars.Error_Msg_Name_1;
5442             when 2 =>
5443                Name := Err_Vars.Error_Msg_Name_2;
5444             when 3 =>
5445                Name := Err_Vars.Error_Msg_Name_3;
5446             when others =>
5447                null;
5448          end case;
5449
5450          Get_Name_String (Name);
5451          Add (Name_Buffer (1 .. Name_Len));
5452          Add ('"');
5453       end Add_Name;
5454
5455    --  Start of processing for Error_Msg
5456
5457    begin
5458       --  If location of error is unknown, use the location of the project
5459
5460       if Real_Location = No_Location then
5461          Real_Location := In_Tree.Projects.Table (Project).Location;
5462       end if;
5463
5464       if Error_Report = null then
5465          Prj.Err.Error_Msg (Msg, Real_Location);
5466          return;
5467       end if;
5468
5469       --  Ignore continuation character
5470
5471       if Msg (First) = '\' then
5472          First := First + 1;
5473       end if;
5474
5475       --  Warning character is always the first one in this package
5476       --  this is an undocumented kludge???
5477
5478       if Msg (First) = '?' then
5479          First := First + 1;
5480          Add ("Warning: ");
5481
5482       elsif Msg (First) = '<' then
5483          First := First + 1;
5484
5485          if Err_Vars.Error_Msg_Warn then
5486             Add ("Warning: ");
5487          end if;
5488       end if;
5489
5490       Index := First;
5491       while Index <= Msg'Last loop
5492          if Msg (Index) = '{' then
5493             Add_File;
5494
5495          elsif Msg (Index) = '%' then
5496             if Index < Msg'Last and then Msg (Index + 1) = '%' then
5497                Index := Index + 1;
5498             end if;
5499
5500             Add_Name;
5501          else
5502             Add (Msg (Index));
5503          end if;
5504          Index := Index + 1;
5505
5506       end loop;
5507
5508       Error_Report (Error_Buffer (1 .. Error_Last), Project, In_Tree);
5509    end Error_Msg;
5510
5511    ----------------------
5512    -- Find_Ada_Sources --
5513    ----------------------
5514
5515    procedure Find_Ada_Sources
5516      (Project      : Project_Id;
5517       In_Tree      : Project_Tree_Ref;
5518       Data         : in out Project_Data;
5519       Current_Dir  : String)
5520    is
5521       Source_Dir      : String_List_Id := Data.Source_Dirs;
5522       Element         : String_Element;
5523       Dir             : Dir_Type;
5524       Current_Source  : String_List_Id := Nil_String;
5525       Source_Recorded : Boolean := False;
5526
5527    begin
5528       if Current_Verbosity = High then
5529          Write_Line ("Looking for sources:");
5530       end if;
5531
5532       --  For each subdirectory
5533
5534       while Source_Dir /= Nil_String loop
5535          begin
5536             Source_Recorded := False;
5537             Element := In_Tree.String_Elements.Table (Source_Dir);
5538             if Element.Value /= No_Name then
5539                Get_Name_String (Element.Display_Value);
5540
5541                declare
5542                   Source_Directory : constant String :=
5543                     Name_Buffer (1 .. Name_Len) & Directory_Separator;
5544                   Dir_Last  : constant Natural :=
5545                      Compute_Directory_Last (Source_Directory);
5546
5547                begin
5548                   if Current_Verbosity = High then
5549                      Write_Str ("Source_Dir = ");
5550                      Write_Line (Source_Directory);
5551                   end if;
5552
5553                   --  We look at every entry in the source directory
5554
5555                   Open (Dir,
5556                         Source_Directory (Source_Directory'First .. Dir_Last));
5557
5558                   loop
5559                      Read (Dir, Name_Buffer, Name_Len);
5560
5561                      if Current_Verbosity = High then
5562                         Write_Str  ("   Checking ");
5563                         Write_Line (Name_Buffer (1 .. Name_Len));
5564                      end if;
5565
5566                      exit when Name_Len = 0;
5567
5568                      declare
5569                         File_Name : constant File_Name_Type := Name_Find;
5570
5571                         --  ??? We could probably optimize the following call:
5572                         --  we need to resolve links only once for the
5573                         --  directory itself, and then do a single call to
5574                         --  readlink() for each file. Unfortunately that would
5575                         --  require a change in Normalize_Pathname so that it
5576                         --  has the option of not resolving links for its
5577                         --  Directory parameter, only for Name.
5578
5579                         Path : constant String :=
5580                                  Normalize_Pathname
5581                                    (Name      => Name_Buffer (1 .. Name_Len),
5582                                     Directory =>
5583                                       Source_Directory
5584                                         (Source_Directory'First .. Dir_Last),
5585                                     Resolve_Links =>
5586                                       Opt.Follow_Links_For_Files,
5587                                     Case_Sensitive => True);
5588
5589                         Path_Name : Path_Name_Type;
5590
5591                      begin
5592                         Name_Len := Path'Length;
5593                         Name_Buffer (1 .. Name_Len) := Path;
5594                         Path_Name := Name_Find;
5595
5596                         --  We attempt to register it as a source. However,
5597                         --  there is no error if the file does not contain a
5598                         --  valid source. But there is an error if we have a
5599                         --  duplicate unit name.
5600
5601                         Record_Ada_Source
5602                           (File_Name       => File_Name,
5603                            Path_Name       => Path_Name,
5604                            Project         => Project,
5605                            In_Tree         => In_Tree,
5606                            Data            => Data,
5607                            Location        => No_Location,
5608                            Current_Source  => Current_Source,
5609                            Source_Recorded => Source_Recorded,
5610                            Current_Dir     => Current_Dir);
5611                      end;
5612                   end loop;
5613
5614                   Close (Dir);
5615                end;
5616             end if;
5617
5618          exception
5619             when Directory_Error =>
5620                null;
5621          end;
5622
5623          if Source_Recorded then
5624             In_Tree.String_Elements.Table (Source_Dir).Flag :=
5625               True;
5626          end if;
5627
5628          Source_Dir := Element.Next;
5629       end loop;
5630
5631       if Current_Verbosity = High then
5632          Write_Line ("end Looking for sources.");
5633       end if;
5634
5635    end Find_Ada_Sources;
5636
5637    --------------------------------
5638    -- Free_Ada_Naming_Exceptions --
5639    --------------------------------
5640
5641    procedure Free_Ada_Naming_Exceptions is
5642    begin
5643       Ada_Naming_Exception_Table.Set_Last (0);
5644       Ada_Naming_Exceptions.Reset;
5645       Reverse_Ada_Naming_Exceptions.Reset;
5646    end Free_Ada_Naming_Exceptions;
5647
5648    ---------------------
5649    -- Get_Directories --
5650    ---------------------
5651
5652    procedure Get_Directories
5653      (Project     : Project_Id;
5654       In_Tree     : Project_Tree_Ref;
5655       Current_Dir : String;
5656       Data        : in out Project_Data)
5657    is
5658       Object_Dir  : constant Variable_Value :=
5659                       Util.Value_Of
5660                         (Name_Object_Dir, Data.Decl.Attributes, In_Tree);
5661
5662       Exec_Dir : constant Variable_Value :=
5663                    Util.Value_Of
5664                      (Name_Exec_Dir, Data.Decl.Attributes, In_Tree);
5665
5666       Source_Dirs : constant Variable_Value :=
5667                       Util.Value_Of
5668                         (Name_Source_Dirs, Data.Decl.Attributes, In_Tree);
5669
5670       Excluded_Source_Dirs : constant Variable_Value :=
5671                               Util.Value_Of
5672                                 (Name_Excluded_Source_Dirs,
5673                                  Data.Decl.Attributes,
5674                                  In_Tree);
5675
5676       Source_Files : constant Variable_Value :=
5677                       Util.Value_Of
5678                         (Name_Source_Files, Data.Decl.Attributes, In_Tree);
5679
5680       Last_Source_Dir : String_List_Id  := Nil_String;
5681
5682       procedure Find_Source_Dirs
5683         (From     : File_Name_Type;
5684          Location : Source_Ptr;
5685          Removed  : Boolean := False);
5686       --  Find one or several source directories, and add (or remove, if
5687       --  Removed is True) them to list of source directories of the project.
5688
5689       ----------------------
5690       -- Find_Source_Dirs --
5691       ----------------------
5692
5693       procedure Find_Source_Dirs
5694         (From     : File_Name_Type;
5695          Location : Source_Ptr;
5696          Removed  : Boolean := False)
5697       is
5698          Directory : constant String := Get_Name_String (From);
5699          Element   : String_Element;
5700
5701          procedure Recursive_Find_Dirs (Path : Name_Id);
5702          --  Find all the subdirectories (recursively) of Path and add them
5703          --  to the list of source directories of the project.
5704
5705          -------------------------
5706          -- Recursive_Find_Dirs --
5707          -------------------------
5708
5709          procedure Recursive_Find_Dirs (Path : Name_Id) is
5710             Dir     : Dir_Type;
5711             Name    : String (1 .. 250);
5712             Last    : Natural;
5713             List    : String_List_Id;
5714             Prev    : String_List_Id;
5715             Element : String_Element;
5716             Found   : Boolean := False;
5717
5718             Non_Canonical_Path : Name_Id := No_Name;
5719             Canonical_Path     : Name_Id := No_Name;
5720
5721             The_Path : constant String :=
5722                          Normalize_Pathname
5723                            (Get_Name_String (Path),
5724                             Directory     => Current_Dir,
5725                             Resolve_Links => Opt.Follow_Links_For_Dirs) &
5726                          Directory_Separator;
5727
5728             The_Path_Last : constant Natural :=
5729                               Compute_Directory_Last (The_Path);
5730
5731          begin
5732             Name_Len := The_Path_Last - The_Path'First + 1;
5733             Name_Buffer (1 .. Name_Len) :=
5734               The_Path (The_Path'First .. The_Path_Last);
5735             Non_Canonical_Path := Name_Find;
5736
5737             if Osint.File_Names_Case_Sensitive then
5738                Canonical_Path := Non_Canonical_Path;
5739             else
5740                Get_Name_String (Non_Canonical_Path);
5741                Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
5742                Canonical_Path := Name_Find;
5743             end if;
5744
5745             --  To avoid processing the same directory several times, check
5746             --  if the directory is already in Recursive_Dirs. If it is, then
5747             --  there is nothing to do, just return. If it is not, put it there
5748             --  and continue recursive processing.
5749
5750             if not Removed then
5751                if Recursive_Dirs.Get (Canonical_Path) then
5752                   return;
5753                else
5754                   Recursive_Dirs.Set (Canonical_Path, True);
5755                end if;
5756             end if;
5757
5758             --  Check if directory is already in list
5759
5760             List := Data.Source_Dirs;
5761             Prev := Nil_String;
5762             while List /= Nil_String loop
5763                Element := In_Tree.String_Elements.Table (List);
5764
5765                if Element.Value /= No_Name then
5766                   Found := Element.Value = Canonical_Path;
5767                   exit when Found;
5768                end if;
5769
5770                Prev := List;
5771                List := Element.Next;
5772             end loop;
5773
5774             --  If directory is not already in list, put it there
5775
5776             if (not Removed) and (not Found) then
5777                if Current_Verbosity = High then
5778                   Write_Str  ("   ");
5779                   Write_Line (The_Path (The_Path'First .. The_Path_Last));
5780                end if;
5781
5782                String_Element_Table.Increment_Last
5783                  (In_Tree.String_Elements);
5784                Element :=
5785                  (Value         => Canonical_Path,
5786                   Display_Value => Non_Canonical_Path,
5787                   Location      => No_Location,
5788                   Flag          => False,
5789                   Next          => Nil_String,
5790                   Index         => 0);
5791
5792                --  Case of first source directory
5793
5794                if Last_Source_Dir = Nil_String then
5795                   Data.Source_Dirs := String_Element_Table.Last
5796                                         (In_Tree.String_Elements);
5797
5798                   --  Here we already have source directories
5799
5800                else
5801                   --  Link the previous last to the new one
5802
5803                   In_Tree.String_Elements.Table
5804                     (Last_Source_Dir).Next :=
5805                       String_Element_Table.Last
5806                         (In_Tree.String_Elements);
5807                end if;
5808
5809                --  And register this source directory as the new last
5810
5811                Last_Source_Dir  := String_Element_Table.Last
5812                  (In_Tree.String_Elements);
5813                In_Tree.String_Elements.Table (Last_Source_Dir) :=
5814                  Element;
5815
5816             elsif Removed and Found then
5817                if Prev = Nil_String then
5818                   Data.Source_Dirs :=
5819                     In_Tree.String_Elements.Table (List).Next;
5820                else
5821                   In_Tree.String_Elements.Table (Prev).Next :=
5822                     In_Tree.String_Elements.Table (List).Next;
5823                end if;
5824             end if;
5825
5826             --  Now look for subdirectories. We do that even when this
5827             --  directory is already in the list, because some of its
5828             --  subdirectories may not be in the list yet.
5829
5830             Open (Dir, The_Path (The_Path'First .. The_Path_Last));
5831
5832             loop
5833                Read (Dir, Name, Last);
5834                exit when Last = 0;
5835
5836                if Name (1 .. Last) /= "."
5837                  and then Name (1 .. Last) /= ".."
5838                then
5839                   --  Avoid . and .. directories
5840
5841                   if Current_Verbosity = High then
5842                      Write_Str  ("   Checking ");
5843                      Write_Line (Name (1 .. Last));
5844                   end if;
5845
5846                   declare
5847                      Path_Name : constant String :=
5848                        Normalize_Pathname
5849                          (Name      => Name (1 .. Last),
5850                           Directory =>
5851                             The_Path (The_Path'First .. The_Path_Last),
5852                           Resolve_Links  => Opt.Follow_Links_For_Dirs,
5853                           Case_Sensitive => True);
5854
5855                   begin
5856                      if Is_Directory (Path_Name) then
5857                         --  We have found a new subdirectory, call self
5858
5859                         Name_Len := Path_Name'Length;
5860                         Name_Buffer (1 .. Name_Len) := Path_Name;
5861                         Recursive_Find_Dirs (Name_Find);
5862                      end if;
5863                   end;
5864                end if;
5865             end loop;
5866
5867             Close (Dir);
5868
5869          exception
5870             when Directory_Error =>
5871                null;
5872          end Recursive_Find_Dirs;
5873
5874       --  Start of processing for Find_Source_Dirs
5875
5876       begin
5877          if Current_Verbosity = High and then not Removed then
5878             Write_Str ("Find_Source_Dirs (""");
5879             Write_Str (Directory);
5880             Write_Line (""")");
5881          end if;
5882
5883          --  First, check if we are looking for a directory tree, indicated
5884          --  by "/**" at the end.
5885
5886          if Directory'Length >= 3
5887            and then Directory (Directory'Last - 1 .. Directory'Last) = "**"
5888            and then (Directory (Directory'Last - 2) = '/'
5889                        or else
5890                      Directory (Directory'Last - 2) = Directory_Separator)
5891          then
5892             if not Removed then
5893                Data.Known_Order_Of_Source_Dirs := False;
5894             end if;
5895
5896             Name_Len := Directory'Length - 3;
5897
5898             if Name_Len = 0 then
5899
5900                --  Case of "/**": all directories in file system
5901
5902                Name_Len := 1;
5903                Name_Buffer (1) := Directory (Directory'First);
5904
5905             else
5906                Name_Buffer (1 .. Name_Len) :=
5907                  Directory (Directory'First .. Directory'Last - 3);
5908             end if;
5909
5910             if Current_Verbosity = High then
5911                Write_Str ("Looking for all subdirectories of """);
5912                Write_Str (Name_Buffer (1 .. Name_Len));
5913                Write_Line ("""");
5914             end if;
5915
5916             declare
5917                Base_Dir : constant File_Name_Type := Name_Find;
5918                Root_Dir : constant String :=
5919                             Normalize_Pathname
5920                               (Name      => Get_Name_String (Base_Dir),
5921                                Directory =>
5922                                  Get_Name_String (Data.Directory.Display_Name),
5923                                Resolve_Links  => False,
5924                                Case_Sensitive => True);
5925
5926             begin
5927                if Root_Dir'Length = 0 then
5928                   Err_Vars.Error_Msg_File_1 := Base_Dir;
5929
5930                   if Location = No_Location then
5931                      Error_Msg
5932                        (Project, In_Tree,
5933                         "{ is not a valid directory.",
5934                         Data.Location);
5935                   else
5936                      Error_Msg
5937                        (Project, In_Tree,
5938                         "{ is not a valid directory.",
5939                         Location);
5940                   end if;
5941
5942                else
5943                   --  We have an existing directory, we register it and all of
5944                   --  its subdirectories.
5945
5946                   if Current_Verbosity = High then
5947                      Write_Line ("Looking for source directories:");
5948                   end if;
5949
5950                   Name_Len := Root_Dir'Length;
5951                   Name_Buffer (1 .. Name_Len) := Root_Dir;
5952                   Recursive_Find_Dirs (Name_Find);
5953
5954                   if Current_Verbosity = High then
5955                      Write_Line ("End of looking for source directories.");
5956                   end if;
5957                end if;
5958             end;
5959
5960          --  We have a single directory
5961
5962          else
5963             declare
5964                Path_Name         : Path_Name_Type;
5965                Display_Path_Name : Path_Name_Type;
5966                List              : String_List_Id;
5967                Prev              : String_List_Id;
5968
5969             begin
5970                Locate_Directory
5971                  (Project     => Project,
5972                   In_Tree     => In_Tree,
5973                   Name        => From,
5974                   Parent      => Data.Directory.Display_Name,
5975                   Dir         => Path_Name,
5976                   Display     => Display_Path_Name,
5977                   Current_Dir => Current_Dir);
5978
5979                if Path_Name = No_Path then
5980                   Err_Vars.Error_Msg_File_1 := From;
5981
5982                   if Location = No_Location then
5983                      Error_Msg
5984                        (Project, In_Tree,
5985                         "{ is not a valid directory",
5986                         Data.Location);
5987                   else
5988                      Error_Msg
5989                        (Project, In_Tree,
5990                         "{ is not a valid directory",
5991                         Location);
5992                   end if;
5993
5994                else
5995                   declare
5996                      Path              : constant String :=
5997                                            Get_Name_String (Path_Name) &
5998                                            Directory_Separator;
5999                      Last_Path         : constant Natural :=
6000                                            Compute_Directory_Last (Path);
6001                      Path_Id           : Name_Id;
6002                      Display_Path      : constant String :=
6003                                            Get_Name_String
6004                                              (Display_Path_Name) &
6005                                            Directory_Separator;
6006                      Last_Display_Path : constant Natural :=
6007                                            Compute_Directory_Last
6008                                              (Display_Path);
6009                      Display_Path_Id   : Name_Id;
6010
6011                   begin
6012                      Name_Len := 0;
6013                      Add_Str_To_Name_Buffer (Path (Path'First .. Last_Path));
6014                      Path_Id := Name_Find;
6015                      Name_Len := 0;
6016                      Add_Str_To_Name_Buffer
6017                        (Display_Path
6018                           (Display_Path'First .. Last_Display_Path));
6019                      Display_Path_Id := Name_Find;
6020
6021                      if not Removed then
6022
6023                         --  As it is an existing directory, we add it to the
6024                         --  list of directories.
6025
6026                         String_Element_Table.Increment_Last
6027                           (In_Tree.String_Elements);
6028                         Element :=
6029                           (Value         => Path_Id,
6030                            Index         => 0,
6031                            Display_Value => Display_Path_Id,
6032                            Location      => No_Location,
6033                            Flag          => False,
6034                            Next          => Nil_String);
6035
6036                         if Last_Source_Dir = Nil_String then
6037
6038                            --  This is the first source directory
6039
6040                            Data.Source_Dirs := String_Element_Table.Last
6041                              (In_Tree.String_Elements);
6042
6043                         else
6044                            --  We already have source directories, link the
6045                            --  previous last to the new one.
6046
6047                            In_Tree.String_Elements.Table
6048                              (Last_Source_Dir).Next :=
6049                              String_Element_Table.Last
6050                                (In_Tree.String_Elements);
6051                         end if;
6052
6053                         --  And register this source directory as the new last
6054
6055                         Last_Source_Dir := String_Element_Table.Last
6056                           (In_Tree.String_Elements);
6057                         In_Tree.String_Elements.Table
6058                           (Last_Source_Dir) := Element;
6059
6060                      else
6061                         --  Remove source dir, if present
6062
6063                         List := Data.Source_Dirs;
6064                         Prev := Nil_String;
6065
6066                         --  Look for source dir in current list
6067
6068                         while List /= Nil_String loop
6069                            Element := In_Tree.String_Elements.Table (List);
6070                            exit when Element.Value = Path_Id;
6071                            Prev := List;
6072                            List := Element.Next;
6073                         end loop;
6074
6075                         if List /= Nil_String then
6076                            --  Source dir was found, remove it from the list
6077
6078                            if Prev = Nil_String then
6079                               Data.Source_Dirs :=
6080                                 In_Tree.String_Elements.Table (List).Next;
6081
6082                            else
6083                               In_Tree.String_Elements.Table (Prev).Next :=
6084                                 In_Tree.String_Elements.Table (List).Next;
6085                            end if;
6086                         end if;
6087                      end if;
6088                   end;
6089                end if;
6090             end;
6091          end if;
6092       end Find_Source_Dirs;
6093
6094    --  Start of processing for Get_Directories
6095
6096    begin
6097       if Current_Verbosity = High then
6098          Write_Line ("Starting to look for directories");
6099       end if;
6100
6101       --  Check the object directory
6102
6103       pragma Assert (Object_Dir.Kind = Single,
6104                      "Object_Dir is not a single string");
6105
6106       --  We set the object directory to its default
6107
6108       Data.Object_Directory   := Data.Directory;
6109
6110       if Object_Dir.Value /= Empty_String then
6111          Get_Name_String (Object_Dir.Value);
6112
6113          if Name_Len = 0 then
6114             Error_Msg
6115               (Project, In_Tree,
6116                "Object_Dir cannot be empty",
6117                Object_Dir.Location);
6118
6119          else
6120             --  We check that the specified object directory does exist
6121
6122             Locate_Directory
6123               (Project,
6124                In_Tree,
6125                File_Name_Type (Object_Dir.Value),
6126                Data.Directory.Display_Name,
6127                Data.Object_Directory.Name,
6128                Data.Object_Directory.Display_Name,
6129                Create   => "object",
6130                Location => Object_Dir.Location,
6131                Current_Dir => Current_Dir);
6132
6133             if Data.Object_Directory = No_Path_Information then
6134
6135                --  The object directory does not exist, report an error if the
6136                --  project is not externally built.
6137
6138                if not Data.Externally_Built then
6139                   Err_Vars.Error_Msg_File_1 :=
6140                     File_Name_Type (Object_Dir.Value);
6141                   Error_Msg
6142                     (Project, In_Tree,
6143                      "the object directory { cannot be found",
6144                      Data.Location);
6145                end if;
6146
6147                --  Do not keep a nil Object_Directory. Set it to the specified
6148                --  (relative or absolute) path. This is for the benefit of
6149                --  tools that recover from errors; for example, these tools
6150                --  could create the non existent directory.
6151
6152                Data.Object_Directory.Display_Name :=
6153                  Path_Name_Type (Object_Dir.Value);
6154
6155                if Osint.File_Names_Case_Sensitive then
6156                   Data.Object_Directory.Name :=
6157                     Path_Name_Type (Object_Dir.Value);
6158                else
6159                   Get_Name_String (Object_Dir.Value);
6160                   Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
6161                   Data.Object_Directory.Name := Name_Find;
6162                end if;
6163             end if;
6164          end if;
6165
6166       elsif Subdirs /= null then
6167          Name_Len := 1;
6168          Name_Buffer (1) := '.';
6169          Locate_Directory
6170            (Project,
6171             In_Tree,
6172             Name_Find,
6173             Data.Directory.Name,
6174             Data.Object_Directory.Name,
6175             Data.Object_Directory.Display_Name,
6176             Create      => "object",
6177             Location    => Object_Dir.Location,
6178             Current_Dir => Current_Dir);
6179       end if;
6180
6181       if Current_Verbosity = High then
6182          if Data.Object_Directory = No_Path_Information then
6183             Write_Line ("No object directory");
6184          else
6185             Write_Str ("Object directory: """);
6186             Write_Str (Get_Name_String (Data.Object_Directory.Display_Name));
6187             Write_Line ("""");
6188          end if;
6189       end if;
6190
6191       --  Check the exec directory
6192
6193       pragma Assert (Exec_Dir.Kind = Single,
6194                      "Exec_Dir is not a single string");
6195
6196       --  We set the object directory to its default
6197
6198       Data.Exec_Directory   := Data.Object_Directory;
6199
6200       if Exec_Dir.Value /= Empty_String then
6201          Get_Name_String (Exec_Dir.Value);
6202
6203          if Name_Len = 0 then
6204             Error_Msg
6205               (Project, In_Tree,
6206                "Exec_Dir cannot be empty",
6207                Exec_Dir.Location);
6208
6209          else
6210             --  We check that the specified exec directory does exist
6211
6212             Locate_Directory
6213               (Project,
6214                In_Tree,
6215                File_Name_Type (Exec_Dir.Value),
6216                Data.Directory.Name,
6217                Data.Exec_Directory.Name,
6218                Data.Exec_Directory.Display_Name,
6219                Create   => "exec",
6220                Location => Exec_Dir.Location,
6221                Current_Dir => Current_Dir);
6222
6223             if Data.Exec_Directory = No_Path_Information then
6224                Err_Vars.Error_Msg_File_1 := File_Name_Type (Exec_Dir.Value);
6225                Error_Msg
6226                  (Project, In_Tree,
6227                   "the exec directory { cannot be found",
6228                   Data.Location);
6229             end if;
6230          end if;
6231       end if;
6232
6233       if Current_Verbosity = High then
6234          if Data.Exec_Directory = No_Path_Information then
6235             Write_Line ("No exec directory");
6236          else
6237             Write_Str ("Exec directory: """);
6238             Write_Str (Get_Name_String (Data.Exec_Directory.Display_Name));
6239             Write_Line ("""");
6240          end if;
6241       end if;
6242
6243       --  Look for the source directories
6244
6245       if Current_Verbosity = High then
6246          Write_Line ("Starting to look for source directories");
6247       end if;
6248
6249       pragma Assert (Source_Dirs.Kind = List, "Source_Dirs is not a list");
6250
6251       if (not Source_Files.Default) and then
6252         Source_Files.Values = Nil_String
6253       then
6254          Data.Source_Dirs := Nil_String;
6255
6256          if Data.Qualifier = Standard then
6257             Error_Msg
6258               (Project,
6259                In_Tree,
6260                "a standard project cannot have no sources",
6261                Source_Files.Location);
6262          end if;
6263
6264          if Data.Extends = No_Project
6265            and then Data.Object_Directory = Data.Directory
6266          then
6267             Data.Object_Directory := No_Path_Information;
6268          end if;
6269
6270       elsif Source_Dirs.Default then
6271
6272          --  No Source_Dirs specified: the single source directory is the one
6273          --  containing the project file
6274
6275          String_Element_Table.Increment_Last
6276            (In_Tree.String_Elements);
6277          Data.Source_Dirs := String_Element_Table.Last
6278            (In_Tree.String_Elements);
6279          In_Tree.String_Elements.Table (Data.Source_Dirs) :=
6280            (Value         => Name_Id (Data.Directory.Name),
6281             Display_Value => Name_Id (Data.Directory.Display_Name),
6282             Location      => No_Location,
6283             Flag          => False,
6284             Next          => Nil_String,
6285             Index         => 0);
6286
6287          if Current_Verbosity = High then
6288             Write_Line ("Single source directory:");
6289             Write_Str ("    """);
6290             Write_Str (Get_Name_String (Data.Directory.Display_Name));
6291             Write_Line ("""");
6292          end if;
6293
6294       elsif Source_Dirs.Values = Nil_String then
6295          if Data.Qualifier = Standard then
6296             Error_Msg
6297               (Project,
6298                In_Tree,
6299                "a standard project cannot have no source directories",
6300                Source_Dirs.Location);
6301          end if;
6302
6303          --  If Source_Dirs is an empty string list, this means that this
6304          --  project contains no source. For projects that don't extend other
6305          --  projects, this also means that there is no need for an object
6306          --  directory, if not specified.
6307
6308          if Data.Extends = No_Project
6309            and then  Data.Object_Directory = Data.Directory
6310          then
6311             Data.Object_Directory := No_Path_Information;
6312          end if;
6313
6314          Data.Source_Dirs           := Nil_String;
6315
6316       else
6317          declare
6318             Source_Dir : String_List_Id;
6319             Element    : String_Element;
6320
6321          begin
6322             --  Process the source directories for each element of the list
6323
6324             Source_Dir := Source_Dirs.Values;
6325             while Source_Dir /= Nil_String loop
6326                Element :=
6327                  In_Tree.String_Elements.Table (Source_Dir);
6328                Find_Source_Dirs
6329                  (File_Name_Type (Element.Value), Element.Location);
6330                Source_Dir := Element.Next;
6331             end loop;
6332          end;
6333       end if;
6334
6335       if not Excluded_Source_Dirs.Default
6336         and then Excluded_Source_Dirs.Values /= Nil_String
6337       then
6338          declare
6339             Source_Dir : String_List_Id;
6340             Element    : String_Element;
6341
6342          begin
6343             --  Process the source directories for each element of the list
6344
6345             Source_Dir := Excluded_Source_Dirs.Values;
6346             while Source_Dir /= Nil_String loop
6347                Element :=
6348                  In_Tree.String_Elements.Table (Source_Dir);
6349                Find_Source_Dirs
6350                  (File_Name_Type (Element.Value),
6351                   Element.Location,
6352                   Removed => True);
6353                Source_Dir := Element.Next;
6354             end loop;
6355          end;
6356       end if;
6357
6358       if Current_Verbosity = High then
6359          Write_Line ("Putting source directories in canonical cases");
6360       end if;
6361
6362       declare
6363          Current : String_List_Id := Data.Source_Dirs;
6364          Element : String_Element;
6365
6366       begin
6367          while Current /= Nil_String loop
6368             Element := In_Tree.String_Elements.Table (Current);
6369             if Element.Value /= No_Name then
6370                if not Osint.File_Names_Case_Sensitive then
6371                   Get_Name_String (Element.Value);
6372                   Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
6373                   Element.Value := Name_Find;
6374                end if;
6375
6376                In_Tree.String_Elements.Table (Current) := Element;
6377             end if;
6378
6379             Current := Element.Next;
6380          end loop;
6381       end;
6382
6383    end Get_Directories;
6384
6385    ---------------
6386    -- Get_Mains --
6387    ---------------
6388
6389    procedure Get_Mains
6390      (Project : Project_Id;
6391       In_Tree : Project_Tree_Ref;
6392       Data    : in out Project_Data)
6393    is
6394       Mains : constant Variable_Value :=
6395                 Prj.Util.Value_Of (Name_Main, Data.Decl.Attributes, In_Tree);
6396
6397    begin
6398       Data.Mains := Mains.Values;
6399
6400       --  If no Mains were specified, and if we are an extending project,
6401       --  inherit the Mains from the project we are extending.
6402
6403       if Mains.Default then
6404          if not Data.Library and then Data.Extends /= No_Project then
6405             Data.Mains :=
6406               In_Tree.Projects.Table (Data.Extends).Mains;
6407          end if;
6408
6409       --  In a library project file, Main cannot be specified
6410
6411       elsif Data.Library then
6412          Error_Msg
6413            (Project, In_Tree,
6414             "a library project file cannot have Main specified",
6415             Mains.Location);
6416       end if;
6417    end Get_Mains;
6418
6419    ---------------------------
6420    -- Get_Sources_From_File --
6421    ---------------------------
6422
6423    procedure Get_Sources_From_File
6424      (Path     : String;
6425       Location : Source_Ptr;
6426       Project  : Project_Id;
6427       In_Tree  : Project_Tree_Ref)
6428    is
6429       File        : Prj.Util.Text_File;
6430       Line        : String (1 .. 250);
6431       Last        : Natural;
6432       Source_Name : File_Name_Type;
6433       Name_Loc    : Name_Location;
6434
6435    begin
6436       if Get_Mode = Ada_Only then
6437          Source_Names.Reset;
6438       end if;
6439
6440       if Current_Verbosity = High then
6441          Write_Str  ("Opening """);
6442          Write_Str  (Path);
6443          Write_Line (""".");
6444       end if;
6445
6446       --  Open the file
6447
6448       Prj.Util.Open (File, Path);
6449
6450       if not Prj.Util.Is_Valid (File) then
6451          Error_Msg (Project, In_Tree, "file does not exist", Location);
6452       else
6453          --  Read the lines one by one
6454
6455          while not Prj.Util.End_Of_File (File) loop
6456             Prj.Util.Get_Line (File, Line, Last);
6457
6458             --  A non empty, non comment line should contain a file name
6459
6460             if Last /= 0
6461               and then (Last = 1 or else Line (1 .. 2) /= "--")
6462             then
6463                Name_Len := Last;
6464                Name_Buffer (1 .. Name_Len) := Line (1 .. Last);
6465                Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
6466                Source_Name := Name_Find;
6467
6468                --  Check that there is no directory information
6469
6470                for J in 1 .. Last loop
6471                   if Line (J) = '/' or else Line (J) = Directory_Separator then
6472                      Error_Msg_File_1 := Source_Name;
6473                      Error_Msg
6474                        (Project,
6475                         In_Tree,
6476                         "file name cannot include directory information ({)",
6477                         Location);
6478                      exit;
6479                   end if;
6480                end loop;
6481
6482                Name_Loc := Source_Names.Get (Source_Name);
6483
6484                if Name_Loc = No_Name_Location then
6485                   Name_Loc :=
6486                     (Name     => Source_Name,
6487                      Location => Location,
6488                      Source   => No_Source,
6489                      Except   => False,
6490                      Found    => False);
6491                end if;
6492
6493                Source_Names.Set (Source_Name, Name_Loc);
6494             end if;
6495          end loop;
6496
6497          Prj.Util.Close (File);
6498
6499       end if;
6500    end Get_Sources_From_File;
6501
6502    --------------
6503    -- Get_Unit --
6504    --------------
6505
6506    procedure Get_Unit
6507      (In_Tree             : Project_Tree_Ref;
6508       Canonical_File_Name : File_Name_Type;
6509       Naming              : Naming_Data;
6510       Exception_Id        : out Ada_Naming_Exception_Id;
6511       Unit_Name           : out Name_Id;
6512       Unit_Kind           : out Spec_Or_Body;
6513       Needs_Pragma        : out Boolean)
6514    is
6515       Info_Id  : Ada_Naming_Exception_Id :=
6516                    Ada_Naming_Exceptions.Get (Canonical_File_Name);
6517       VMS_Name : File_Name_Type;
6518
6519    begin
6520       if Info_Id = No_Ada_Naming_Exception then
6521          if Hostparm.OpenVMS then
6522             VMS_Name := Canonical_File_Name;
6523             Get_Name_String (VMS_Name);
6524
6525             if Name_Buffer (Name_Len) = '.' then
6526                Name_Len := Name_Len - 1;
6527                VMS_Name := Name_Find;
6528             end if;
6529
6530             Info_Id := Ada_Naming_Exceptions.Get (VMS_Name);
6531          end if;
6532
6533       end if;
6534
6535       if Info_Id /= No_Ada_Naming_Exception then
6536          Exception_Id := Info_Id;
6537          Unit_Name := No_Name;
6538          Unit_Kind := Specification;
6539          Needs_Pragma := True;
6540          return;
6541       end if;
6542
6543       Needs_Pragma := False;
6544       Exception_Id := No_Ada_Naming_Exception;
6545
6546       Get_Name_String (Canonical_File_Name);
6547
6548       --  How about some comments and a name for this declare block ???
6549       --  In fact the whole code below needs more comments ???
6550
6551       declare
6552          File          : String := Name_Buffer (1 .. Name_Len);
6553          First         : constant Positive := File'First;
6554          Last          : Natural           := File'Last;
6555          Standard_GNAT : Boolean;
6556          Spec          : constant File_Name_Type :=
6557                              Spec_Suffix_Id_Of (In_Tree, Name_Ada, Naming);
6558          Body_Suff     : constant File_Name_Type :=
6559                              Body_Suffix_Id_Of (In_Tree, Name_Ada, Naming);
6560
6561       begin
6562          Standard_GNAT := Spec = Default_Ada_Spec_Suffix
6563             and then Body_Suff = Default_Ada_Body_Suffix;
6564
6565          declare
6566             Spec_Suffix : constant String := Get_Name_String (Spec);
6567             Body_Suffix : constant String := Get_Name_String (Body_Suff);
6568             Sep_Suffix  : constant String :=
6569                             Get_Name_String (Naming.Separate_Suffix);
6570
6571             May_Be_Spec : Boolean;
6572             May_Be_Body : Boolean;
6573             May_Be_Sep  : Boolean;
6574
6575          begin
6576             May_Be_Spec :=
6577               File'Length > Spec_Suffix'Length
6578               and then
6579               File (Last - Spec_Suffix'Length + 1 .. Last) = Spec_Suffix;
6580
6581             May_Be_Body :=
6582               File'Length > Body_Suffix'Length
6583               and then
6584               File (Last - Body_Suffix'Length + 1 .. Last) = Body_Suffix;
6585
6586             May_Be_Sep :=
6587               File'Length > Sep_Suffix'Length
6588               and then
6589               File (Last - Sep_Suffix'Length + 1 .. Last) = Sep_Suffix;
6590
6591             --  If two May_Be_ booleans are True, always choose the longer one
6592
6593             if May_Be_Spec then
6594                if May_Be_Body and then
6595                  Spec_Suffix'Length < Body_Suffix'Length
6596                then
6597                   Unit_Kind := Body_Part;
6598
6599                   if May_Be_Sep and then
6600                     Body_Suffix'Length < Sep_Suffix'Length
6601                   then
6602                      Last := Last - Sep_Suffix'Length;
6603                      May_Be_Body := False;
6604
6605                   else
6606                      Last := Last - Body_Suffix'Length;
6607                      May_Be_Sep := False;
6608                   end if;
6609
6610                elsif May_Be_Sep and then
6611                      Spec_Suffix'Length < Sep_Suffix'Length
6612                then
6613                   Unit_Kind := Body_Part;
6614                   Last := Last - Sep_Suffix'Length;
6615
6616                else
6617                   Unit_Kind := Specification;
6618                   Last := Last - Spec_Suffix'Length;
6619                end if;
6620
6621             elsif May_Be_Body then
6622                Unit_Kind := Body_Part;
6623
6624                if May_Be_Sep and then
6625                   Body_Suffix'Length < Sep_Suffix'Length
6626                then
6627                   Last := Last - Sep_Suffix'Length;
6628                   May_Be_Body := False;
6629                else
6630                   Last := Last - Body_Suffix'Length;
6631                   May_Be_Sep := False;
6632                end if;
6633
6634             elsif May_Be_Sep then
6635                Unit_Kind := Body_Part;
6636                Last := Last - Sep_Suffix'Length;
6637
6638             else
6639                Last := 0;
6640             end if;
6641
6642             if Last = 0 then
6643
6644                --  This is not a source file
6645
6646                Unit_Name := No_Name;
6647                Unit_Kind := Specification;
6648
6649                if Current_Verbosity = High then
6650                   Write_Line ("   Not a valid file name.");
6651                end if;
6652
6653                return;
6654
6655             elsif Current_Verbosity = High then
6656                case Unit_Kind is
6657                when Specification =>
6658                   Write_Str  ("   Specification: ");
6659                   Write_Line (File (First .. Last + Spec_Suffix'Length));
6660
6661                when Body_Part =>
6662                   if May_Be_Body then
6663                      Write_Str  ("   Body: ");
6664                      Write_Line (File (First .. Last + Body_Suffix'Length));
6665
6666                   else
6667                      Write_Str  ("   Separate: ");
6668                      Write_Line (File (First .. Last + Sep_Suffix'Length));
6669                   end if;
6670                end case;
6671             end if;
6672          end;
6673
6674          Get_Name_String (Naming.Dot_Replacement);
6675          Standard_GNAT :=
6676            Standard_GNAT and then Name_Buffer (1 .. Name_Len) = "-";
6677
6678          if Name_Buffer (1 .. Name_Len) /= "." then
6679
6680             --  If Dot_Replacement is not a single dot, then there should not
6681             --  be any dot in the name.
6682
6683             for Index in First .. Last loop
6684                if File (Index) = '.' then
6685                   if Current_Verbosity = High then
6686                      Write_Line
6687                        ("   Not a valid file name (some dot not replaced).");
6688                   end if;
6689
6690                   Unit_Name := No_Name;
6691                   return;
6692
6693                end if;
6694             end loop;
6695
6696             --  Replace the substring Dot_Replacement with dots
6697
6698             declare
6699                Index : Positive := First;
6700
6701             begin
6702                while Index <= Last - Name_Len + 1 loop
6703
6704                   if File (Index .. Index + Name_Len - 1) =
6705                     Name_Buffer (1 .. Name_Len)
6706                   then
6707                      File (Index) := '.';
6708
6709                      if Name_Len > 1 and then Index < Last then
6710                         File (Index + 1 .. Last - Name_Len + 1) :=
6711                           File (Index + Name_Len .. Last);
6712                      end if;
6713
6714                      Last := Last - Name_Len + 1;
6715                   end if;
6716
6717                   Index := Index + 1;
6718                end loop;
6719             end;
6720          end if;
6721
6722          --  Check if the casing is right
6723
6724          declare
6725             Src      : String := File (First .. Last);
6726             Src_Last : Positive := Last;
6727
6728          begin
6729             case Naming.Casing is
6730                when All_Lower_Case =>
6731                   Fixed.Translate
6732                     (Source  => Src,
6733                      Mapping => Lower_Case_Map);
6734
6735                when All_Upper_Case =>
6736                   Fixed.Translate
6737                     (Source  => Src,
6738                      Mapping => Upper_Case_Map);
6739
6740                when Mixed_Case | Unknown =>
6741                   null;
6742             end case;
6743
6744             if Src /= File (First .. Last) then
6745                if Current_Verbosity = High then
6746                   Write_Line ("   Not a valid file name (casing).");
6747                end if;
6748
6749                Unit_Name := No_Name;
6750                return;
6751             end if;
6752
6753             --  We put the name in lower case
6754
6755             Fixed.Translate
6756               (Source  => Src,
6757                Mapping => Lower_Case_Map);
6758
6759             --  In the standard GNAT naming scheme, check for special cases:
6760             --  children or separates of A, G, I or S, and run time sources.
6761
6762             if Standard_GNAT and then Src'Length >= 3 then
6763                declare
6764                   S1 : constant Character := Src (Src'First);
6765                   S2 : constant Character := Src (Src'First + 1);
6766                   S3 : constant Character := Src (Src'First + 2);
6767
6768                begin
6769                   if S1 = 'a' or else
6770                      S1 = 'g' or else
6771                      S1 = 'i' or else
6772                      S1 = 's'
6773                   then
6774                      --  Children or separates of packages A, G, I or S. These
6775                      --  names are x__ ... or x~... (where x is a, g, i, or s).
6776                      --  Both versions (x__... and x~...) are allowed in all
6777                      --  platforms, because it is not possible to know the
6778                      --  platform before processing of the project files.
6779
6780                      if S2 = '_' and then S3 = '_' then
6781                         Src (Src'First + 1) := '.';
6782                         Src_Last := Src_Last - 1;
6783                         Src (Src'First + 2 .. Src_Last) :=
6784                           Src (Src'First + 3 .. Src_Last + 1);
6785
6786                      elsif S2 = '~' then
6787                         Src (Src'First + 1) := '.';
6788
6789                      --  If it is potentially a run time source, disable
6790                      --  filling of the mapping file to avoid warnings.
6791
6792                      elsif S2 = '.' then
6793                         Set_Mapping_File_Initial_State_To_Empty;
6794                      end if;
6795                   end if;
6796                end;
6797             end if;
6798
6799             if Current_Verbosity = High then
6800                Write_Str  ("      ");
6801                Write_Line (Src (Src'First .. Src_Last));
6802             end if;
6803
6804             --  Now, we check if this name is a valid unit name
6805
6806             Check_Ada_Name
6807               (Name => Src (Src'First .. Src_Last), Unit => Unit_Name);
6808          end;
6809
6810       end;
6811    end Get_Unit;
6812
6813    ----------
6814    -- Hash --
6815    ----------
6816
6817    function Hash (Unit : Unit_Info) return Header_Num is
6818    begin
6819       return Header_Num (Unit.Unit mod 2048);
6820    end Hash;
6821
6822    -----------------------
6823    -- Is_Illegal_Suffix --
6824    -----------------------
6825
6826    function Is_Illegal_Suffix
6827      (Suffix                          : String;
6828       Dot_Replacement_Is_A_Single_Dot : Boolean) return Boolean
6829    is
6830    begin
6831       if Suffix'Length = 0 or else Index (Suffix, ".") = 0 then
6832          return True;
6833       end if;
6834
6835       --  If dot replacement is a single dot, and first character of suffix is
6836       --  also a dot
6837
6838       if Dot_Replacement_Is_A_Single_Dot
6839         and then Suffix (Suffix'First) = '.'
6840       then
6841          for Index in Suffix'First + 1 .. Suffix'Last loop
6842
6843             --  If there is another dot
6844
6845             if Suffix (Index) = '.' then
6846
6847                --  It is illegal to have a letter following the initial dot
6848
6849                return Is_Letter (Suffix (Suffix'First + 1));
6850             end if;
6851          end loop;
6852       end if;
6853
6854       --  Everything is OK
6855
6856       return False;
6857    end Is_Illegal_Suffix;
6858
6859    ----------------------
6860    -- Locate_Directory --
6861    ----------------------
6862
6863    procedure Locate_Directory
6864      (Project     : Project_Id;
6865       In_Tree     : Project_Tree_Ref;
6866       Name        : File_Name_Type;
6867       Parent      : Path_Name_Type;
6868       Dir         : out Path_Name_Type;
6869       Display     : out Path_Name_Type;
6870       Create      : String := "";
6871       Current_Dir : String;
6872       Location    : Source_Ptr := No_Location)
6873    is
6874       The_Parent      : constant String :=
6875                           Get_Name_String (Parent) & Directory_Separator;
6876
6877       The_Parent_Last : constant Natural :=
6878                           Compute_Directory_Last (The_Parent);
6879
6880       Full_Name       : File_Name_Type;
6881
6882       The_Name        : File_Name_Type;
6883
6884    begin
6885       Get_Name_String (Name);
6886
6887       --  Add Subdirs.all if it is a directory that may be created and
6888       --  Subdirs is not null;
6889
6890       if Create /= "" and then Subdirs /= null then
6891          if Name_Buffer (Name_Len) /= Directory_Separator then
6892             Add_Char_To_Name_Buffer (Directory_Separator);
6893          end if;
6894
6895          Add_Str_To_Name_Buffer (Subdirs.all);
6896       end if;
6897
6898       --  Convert '/' to directory separator (for Windows)
6899
6900       for J in 1 .. Name_Len loop
6901          if Name_Buffer (J) = '/' then
6902             Name_Buffer (J) := Directory_Separator;
6903          end if;
6904       end loop;
6905
6906       The_Name := Name_Find;
6907
6908       if Current_Verbosity = High then
6909          Write_Str ("Locate_Directory (""");
6910          Write_Str (Get_Name_String (The_Name));
6911          Write_Str (""", """);
6912          Write_Str (The_Parent);
6913          Write_Line (""")");
6914       end if;
6915
6916       Dir     := No_Path;
6917       Display := No_Path;
6918
6919       if Is_Absolute_Path (Get_Name_String (The_Name)) then
6920          Full_Name := The_Name;
6921
6922       else
6923          Name_Len := 0;
6924          Add_Str_To_Name_Buffer
6925            (The_Parent (The_Parent'First .. The_Parent_Last));
6926          Add_Str_To_Name_Buffer (Get_Name_String (The_Name));
6927          Full_Name := Name_Find;
6928       end if;
6929
6930       declare
6931          Full_Path_Name : constant String := Get_Name_String (Full_Name);
6932
6933       begin
6934          if (Setup_Projects or else Subdirs /= null)
6935            and then Create'Length > 0
6936            and then not Is_Directory (Full_Path_Name)
6937          then
6938             begin
6939                Create_Path (Full_Path_Name);
6940
6941                if not Quiet_Output then
6942                   Write_Str (Create);
6943                   Write_Str (" directory """);
6944                   Write_Str (Full_Path_Name);
6945                   Write_Line (""" created");
6946                end if;
6947
6948             exception
6949                when Use_Error =>
6950                   Error_Msg
6951                     (Project, In_Tree,
6952                      "could not create " & Create &
6953                      " directory " & Full_Path_Name,
6954                      Location);
6955             end;
6956          end if;
6957
6958          if Is_Directory (Full_Path_Name) then
6959             declare
6960                Normed : constant String :=
6961                           Normalize_Pathname
6962                             (Full_Path_Name,
6963                              Directory      => Current_Dir,
6964                              Resolve_Links  => False,
6965                              Case_Sensitive => True);
6966
6967                Canonical_Path : constant String :=
6968                                   Normalize_Pathname
6969                                     (Normed,
6970                                      Directory      => Current_Dir,
6971                                      Resolve_Links  =>
6972                                         Opt.Follow_Links_For_Dirs,
6973                                      Case_Sensitive => False);
6974
6975             begin
6976                Name_Len := Normed'Length;
6977                Name_Buffer (1 .. Name_Len) := Normed;
6978                Display := Name_Find;
6979
6980                Name_Len := Canonical_Path'Length;
6981                Name_Buffer (1 .. Name_Len) := Canonical_Path;
6982                Dir := Name_Find;
6983             end;
6984          end if;
6985       end;
6986    end Locate_Directory;
6987
6988    ---------------------------
6989    -- Find_Excluded_Sources --
6990    ---------------------------
6991
6992    procedure Find_Excluded_Sources
6993      (Project : Project_Id;
6994       In_Tree : Project_Tree_Ref;
6995       Data    : Project_Data)
6996    is
6997       Excluded_Sources : Variable_Value;
6998
6999       Excluded_Source_List_File : Variable_Value;
7000
7001       Current          : String_List_Id;
7002
7003       Element : String_Element;
7004
7005       Location : Source_Ptr;
7006
7007       Name : File_Name_Type;
7008
7009       File : Prj.Util.Text_File;
7010       Line : String (1 .. 300);
7011       Last : Natural;
7012
7013       Locally_Removed : Boolean := False;
7014    begin
7015       Excluded_Source_List_File :=
7016         Util.Value_Of
7017           (Name_Excluded_Source_List_File, Data.Decl.Attributes, In_Tree);
7018
7019       Excluded_Sources :=
7020         Util.Value_Of
7021           (Name_Excluded_Source_Files, Data.Decl.Attributes, In_Tree);
7022
7023       --  If Excluded_Source_Files is not declared, check
7024       --  Locally_Removed_Files.
7025
7026       if Excluded_Sources.Default then
7027          Locally_Removed := True;
7028          Excluded_Sources :=
7029            Util.Value_Of
7030              (Name_Locally_Removed_Files, Data.Decl.Attributes, In_Tree);
7031       end if;
7032
7033       Excluded_Sources_Htable.Reset;
7034
7035       --  If there are excluded sources, put them in the table
7036
7037       if not Excluded_Sources.Default then
7038          if not Excluded_Source_List_File.Default then
7039             if Locally_Removed then
7040                Error_Msg
7041                  (Project, In_Tree,
7042                   "?both attributes Locally_Removed_Files and " &
7043                   "Excluded_Source_List_File are present",
7044                   Excluded_Source_List_File.Location);
7045             else
7046                Error_Msg
7047                  (Project, In_Tree,
7048                   "?both attributes Excluded_Source_Files and " &
7049                   "Excluded_Source_List_File are present",
7050                   Excluded_Source_List_File.Location);
7051             end if;
7052          end if;
7053
7054          Current := Excluded_Sources.Values;
7055          while Current /= Nil_String loop
7056             Element := In_Tree.String_Elements.Table (Current);
7057
7058             if Osint.File_Names_Case_Sensitive then
7059                Name := File_Name_Type (Element.Value);
7060             else
7061                Get_Name_String (Element.Value);
7062                Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
7063                Name := Name_Find;
7064             end if;
7065
7066             --  If the element has no location, then use the location
7067             --  of Excluded_Sources to report possible errors.
7068
7069             if Element.Location = No_Location then
7070                Location := Excluded_Sources.Location;
7071             else
7072                Location := Element.Location;
7073             end if;
7074
7075             Excluded_Sources_Htable.Set (Name, (Name, False, Location));
7076             Current := Element.Next;
7077          end loop;
7078
7079       elsif not Excluded_Source_List_File.Default then
7080          Location := Excluded_Source_List_File.Location;
7081
7082          declare
7083             Source_File_Path_Name : constant String :=
7084                                       Path_Name_Of
7085                                         (File_Name_Type
7086                                            (Excluded_Source_List_File.Value),
7087                                          Data.Directory.Name);
7088
7089          begin
7090             if Source_File_Path_Name'Length = 0 then
7091                Err_Vars.Error_Msg_File_1 :=
7092                  File_Name_Type (Excluded_Source_List_File.Value);
7093                Error_Msg
7094                  (Project, In_Tree,
7095                   "file with excluded sources { does not exist",
7096                   Excluded_Source_List_File.Location);
7097
7098             else
7099                --  Open the file
7100
7101                Prj.Util.Open (File, Source_File_Path_Name);
7102
7103                if not Prj.Util.Is_Valid (File) then
7104                   Error_Msg
7105                     (Project, In_Tree, "file does not exist", Location);
7106                else
7107                   --  Read the lines one by one
7108
7109                   while not Prj.Util.End_Of_File (File) loop
7110                      Prj.Util.Get_Line (File, Line, Last);
7111
7112                      --  A non empty, non comment line should contain a file
7113                      --  name
7114
7115                      if Last /= 0
7116                        and then (Last = 1 or else Line (1 .. 2) /= "--")
7117                      then
7118                         Name_Len := Last;
7119                         Name_Buffer (1 .. Name_Len) := Line (1 .. Last);
7120                         Canonical_Case_File_Name
7121                           (Name_Buffer (1 .. Name_Len));
7122                         Name := Name_Find;
7123
7124                         --  Check that there is no directory information
7125
7126                         for J in 1 .. Last loop
7127                            if Line (J) = '/'
7128                              or else Line (J) = Directory_Separator
7129                            then
7130                               Error_Msg_File_1 := Name;
7131                               Error_Msg
7132                                 (Project,
7133                                  In_Tree,
7134                                  "file name cannot include " &
7135                                  "directory information ({)",
7136                                  Location);
7137                               exit;
7138                            end if;
7139                         end loop;
7140
7141                         Excluded_Sources_Htable.Set
7142                           (Name, (Name, False, Location));
7143                      end if;
7144                   end loop;
7145
7146                   Prj.Util.Close (File);
7147                end if;
7148             end if;
7149          end;
7150       end if;
7151    end Find_Excluded_Sources;
7152
7153    ---------------------------
7154    -- Find_Explicit_Sources --
7155    ---------------------------
7156
7157    procedure Find_Explicit_Sources
7158      (Current_Dir : String;
7159       Project     : Project_Id;
7160       In_Tree     : Project_Tree_Ref;
7161       Data        : in out Project_Data)
7162    is
7163       Sources          : constant Variable_Value :=
7164                            Util.Value_Of
7165                              (Name_Source_Files,
7166                               Data.Decl.Attributes,
7167                               In_Tree);
7168       Source_List_File : constant Variable_Value :=
7169                            Util.Value_Of
7170                              (Name_Source_List_File,
7171                               Data.Decl.Attributes,
7172                               In_Tree);
7173       Name_Loc         : Name_Location;
7174
7175    begin
7176       pragma Assert (Sources.Kind = List, "Source_Files is not a list");
7177       pragma Assert
7178         (Source_List_File.Kind = Single,
7179          "Source_List_File is not a single string");
7180
7181       --  If the user has specified a Sources attribute
7182
7183       if not Sources.Default then
7184          if not Source_List_File.Default then
7185             Error_Msg
7186               (Project, In_Tree,
7187                "?both attributes source_files and " &
7188                "source_list_file are present",
7189                Source_List_File.Location);
7190          end if;
7191
7192          --  Sources is a list of file names
7193
7194          declare
7195             Current  : String_List_Id := Sources.Values;
7196             Element  : String_Element;
7197             Location : Source_Ptr;
7198             Name     : File_Name_Type;
7199
7200          begin
7201             if Get_Mode = Ada_Only then
7202                Data.Ada_Sources_Present := Current /= Nil_String;
7203             end if;
7204
7205             if Get_Mode = Multi_Language then
7206                if Current = Nil_String then
7207                   Data.First_Language_Processing := No_Language_Index;
7208
7209                   --  This project contains no source. For projects that
7210                   --  don't extend other projects, this also means that
7211                   --  there is no need for an object directory, if not
7212                   --  specified.
7213
7214                   if Data.Extends = No_Project
7215                     and then Data.Object_Directory = Data.Directory
7216                   then
7217                      Data.Object_Directory := No_Path_Information;
7218                   end if;
7219                end if;
7220             end if;
7221
7222             while Current /= Nil_String loop
7223                Element := In_Tree.String_Elements.Table (Current);
7224                Get_Name_String (Element.Value);
7225
7226                if Osint.File_Names_Case_Sensitive then
7227                   Name := File_Name_Type (Element.Value);
7228                else
7229                   Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
7230                   Name := Name_Find;
7231                end if;
7232
7233                --  If the element has no location, then use the
7234                --  location of Sources to report possible errors.
7235
7236                if Element.Location = No_Location then
7237                   Location := Sources.Location;
7238                else
7239                   Location := Element.Location;
7240                end if;
7241
7242                --  Check that there is no directory information
7243
7244                for J in 1 .. Name_Len loop
7245                   if Name_Buffer (J) = '/'
7246                     or else Name_Buffer (J) = Directory_Separator
7247                   then
7248                      Error_Msg_File_1 := Name;
7249                      Error_Msg
7250                        (Project,
7251                         In_Tree,
7252                         "file name cannot include directory " &
7253                         "information ({)",
7254                         Location);
7255                      exit;
7256                   end if;
7257                end loop;
7258
7259                --  In Multi_Language mode, check whether the file is
7260                --  already there: the same file name may be in the list; if
7261                --  the source is missing, the error will be on the first
7262                --  mention of the source file name.
7263
7264                case Get_Mode is
7265                   when Ada_Only =>
7266                      Name_Loc := No_Name_Location;
7267                   when Multi_Language =>
7268                      Name_Loc := Source_Names.Get (Name);
7269                end case;
7270
7271                if Name_Loc = No_Name_Location then
7272                   Name_Loc :=
7273                     (Name     => Name,
7274                      Location => Location,
7275                      Source   => No_Source,
7276                      Except   => False,
7277                      Found    => False);
7278                   Source_Names.Set (Name, Name_Loc);
7279                end if;
7280
7281                Current := Element.Next;
7282             end loop;
7283
7284             if Get_Mode = Ada_Only then
7285                Get_Path_Names_And_Record_Ada_Sources
7286                  (Project, In_Tree, Data, Current_Dir);
7287             end if;
7288          end;
7289
7290          --  If we have no Source_Files attribute, check the Source_List_File
7291          --  attribute
7292
7293       elsif not Source_List_File.Default then
7294
7295          --  Source_List_File is the name of the file
7296          --  that contains the source file names
7297
7298          declare
7299             Source_File_Path_Name : constant String :=
7300               Path_Name_Of
7301                 (File_Name_Type (Source_List_File.Value), Data.Directory.Name);
7302
7303          begin
7304             if Source_File_Path_Name'Length = 0 then
7305                Err_Vars.Error_Msg_File_1 :=
7306                  File_Name_Type (Source_List_File.Value);
7307                Error_Msg
7308                  (Project, In_Tree,
7309                   "file with sources { does not exist",
7310                   Source_List_File.Location);
7311
7312             else
7313                Get_Sources_From_File
7314                  (Source_File_Path_Name, Source_List_File.Location,
7315                   Project, In_Tree);
7316
7317                if Get_Mode = Ada_Only then
7318                   --  Look in the source directories to find those sources
7319
7320                   Get_Path_Names_And_Record_Ada_Sources
7321                     (Project, In_Tree, Data, Current_Dir);
7322                end if;
7323             end if;
7324          end;
7325
7326       else
7327          --  Neither Source_Files nor Source_List_File has been
7328          --  specified. Find all the files that satisfy the naming
7329          --  scheme in all the source directories.
7330
7331          if Get_Mode = Ada_Only then
7332             Find_Ada_Sources (Project, In_Tree, Data, Current_Dir);
7333          end if;
7334       end if;
7335
7336       if Get_Mode = Multi_Language then
7337          Search_Directories
7338            (Project, In_Tree, Data,
7339             For_All_Sources =>
7340               Sources.Default and then Source_List_File.Default);
7341
7342          --  Check if all exceptions have been found.
7343          --  For Ada, it is an error if an exception is not found.
7344          --  For other language, the source is simply removed.
7345
7346          declare
7347             Source   : Source_Id;
7348             Src_Data : Source_Data;
7349
7350          begin
7351             Source := Data.First_Source;
7352             while Source /= No_Source loop
7353                Src_Data := In_Tree.Sources.Table (Source);
7354
7355                if Src_Data.Naming_Exception
7356                  and then Src_Data.Path = No_Path_Information
7357                then
7358                   if Src_Data.Unit /= No_Name then
7359                      Error_Msg_Name_1 := Name_Id (Src_Data.Display_File);
7360                      Error_Msg_Name_2 := Name_Id (Src_Data.Unit);
7361                      Error_Msg
7362                        (Project, In_Tree,
7363                         "source file %% for unit %% not found",
7364                         No_Location);
7365                   end if;
7366
7367                   Remove_Source (Source, No_Source, Project, Data, In_Tree);
7368                end if;
7369
7370                Source := Src_Data.Next_In_Project;
7371             end loop;
7372          end;
7373
7374          --  Check that all sources in Source_Files or the file
7375          --  Source_List_File has been found.
7376
7377          declare
7378             Name_Loc : Name_Location;
7379
7380          begin
7381             Name_Loc := Source_Names.Get_First;
7382             while Name_Loc /= No_Name_Location loop
7383                if (not Name_Loc.Except) and then (not Name_Loc.Found) then
7384                   Error_Msg_Name_1 := Name_Id (Name_Loc.Name);
7385                   Error_Msg
7386                     (Project,
7387                      In_Tree,
7388                      "file %% not found",
7389                      Name_Loc.Location);
7390                end if;
7391
7392                Name_Loc := Source_Names.Get_Next;
7393             end loop;
7394          end;
7395       end if;
7396
7397       if Get_Mode = Ada_Only
7398         and then Data.Extends = No_Project
7399       then
7400          --  We should have found at least one source, if not report an error
7401
7402          if Data.Ada_Sources = Nil_String then
7403             Report_No_Sources
7404               (Project, "Ada", In_Tree, Source_List_File.Location);
7405          end if;
7406       end if;
7407
7408    end Find_Explicit_Sources;
7409
7410    -------------------------------------------
7411    -- Get_Path_Names_And_Record_Ada_Sources --
7412    -------------------------------------------
7413
7414    procedure Get_Path_Names_And_Record_Ada_Sources
7415      (Project     : Project_Id;
7416       In_Tree     : Project_Tree_Ref;
7417       Data        : in out Project_Data;
7418       Current_Dir : String)
7419    is
7420       Source_Dir      : String_List_Id;
7421       Element         : String_Element;
7422       Path            : Path_Name_Type;
7423       Dir             : Dir_Type;
7424       Name            : File_Name_Type;
7425       Canonical_Name  : File_Name_Type;
7426       Name_Str        : String (1 .. 1_024);
7427       Last            : Natural := 0;
7428       NL              : Name_Location;
7429       Current_Source  : String_List_Id := Nil_String;
7430       First_Error     : Boolean := True;
7431       Source_Recorded : Boolean := False;
7432
7433    begin
7434       --  We look in all source directories for the file names in the hash
7435       --  table Source_Names.
7436
7437       Source_Dir := Data.Source_Dirs;
7438       while Source_Dir /= Nil_String loop
7439          Source_Recorded := False;
7440          Element := In_Tree.String_Elements.Table (Source_Dir);
7441
7442          declare
7443             Dir_Path : constant String :=
7444               Get_Name_String (Element.Display_Value);
7445          begin
7446             if Current_Verbosity = High then
7447                Write_Str ("checking directory """);
7448                Write_Str (Dir_Path);
7449                Write_Line ("""");
7450             end if;
7451
7452             Open (Dir, Dir_Path);
7453
7454             loop
7455                Read (Dir, Name_Str, Last);
7456                exit when Last = 0;
7457
7458                Name_Len := Last;
7459                Name_Buffer (1 .. Name_Len) := Name_Str (1 .. Last);
7460                Name := Name_Find;
7461
7462                if Osint.File_Names_Case_Sensitive then
7463                   Canonical_Name := Name;
7464                else
7465                   Canonical_Case_File_Name (Name_Str (1 .. Last));
7466                   Name_Buffer (1 .. Name_Len) := Name_Str (1 .. Last);
7467                   Canonical_Name := Name_Find;
7468                end if;
7469
7470                NL := Source_Names.Get (Canonical_Name);
7471
7472                if NL /= No_Name_Location and then not NL.Found then
7473                   NL.Found := True;
7474                   Source_Names.Set (Canonical_Name, NL);
7475                   Name_Len := Dir_Path'Length;
7476                   Name_Buffer (1 .. Name_Len) := Dir_Path;
7477
7478                   if Name_Buffer (Name_Len) /= Directory_Separator then
7479                      Add_Char_To_Name_Buffer (Directory_Separator);
7480                   end if;
7481
7482                   Add_Str_To_Name_Buffer (Name_Str (1 .. Last));
7483                   Path := Name_Find;
7484
7485                   if Current_Verbosity = High then
7486                      Write_Str  ("  found ");
7487                      Write_Line (Get_Name_String (Name));
7488                   end if;
7489
7490                   --  Register the source if it is an Ada compilation unit
7491
7492                   Record_Ada_Source
7493                     (File_Name       => Name,
7494                      Path_Name       => Path,
7495                      Project         => Project,
7496                      In_Tree         => In_Tree,
7497                      Data            => Data,
7498                      Location        => NL.Location,
7499                      Current_Source  => Current_Source,
7500                      Source_Recorded => Source_Recorded,
7501                      Current_Dir     => Current_Dir);
7502                end if;
7503             end loop;
7504
7505             Close (Dir);
7506          end;
7507
7508          if Source_Recorded then
7509             In_Tree.String_Elements.Table (Source_Dir).Flag :=
7510               True;
7511          end if;
7512
7513          Source_Dir := Element.Next;
7514       end loop;
7515
7516       --  It is an error if a source file name in a source list or
7517       --  in a source list file is not found.
7518
7519       NL := Source_Names.Get_First;
7520       while NL /= No_Name_Location loop
7521          if not NL.Found then
7522             Err_Vars.Error_Msg_File_1 := NL.Name;
7523
7524             if First_Error then
7525                Error_Msg
7526                  (Project, In_Tree,
7527                   "source file { cannot be found",
7528                   NL.Location);
7529                First_Error := False;
7530
7531             else
7532                Error_Msg
7533                  (Project, In_Tree,
7534                   "\source file { cannot be found",
7535                   NL.Location);
7536             end if;
7537          end if;
7538
7539          NL := Source_Names.Get_Next;
7540       end loop;
7541    end Get_Path_Names_And_Record_Ada_Sources;
7542
7543    --------------------------
7544    -- Check_Naming_Schemes --
7545    --------------------------
7546
7547    procedure Check_Naming_Schemes
7548      (In_Tree               : Project_Tree_Ref;
7549       Data                  : in out Project_Data;
7550       Filename              : String;
7551       File_Name             : File_Name_Type;
7552       Alternate_Languages   : out Alternate_Language_Id;
7553       Language              : out Language_Index;
7554       Language_Name         : out Name_Id;
7555       Display_Language_Name : out Name_Id;
7556       Unit                  : out Name_Id;
7557       Lang_Kind             : out Language_Kind;
7558       Kind                  : out Source_Kind)
7559    is
7560       Last           : Positive := Filename'Last;
7561       Config         : Language_Config;
7562       Lang           : Name_List_Index := Data.Languages;
7563       Header_File    : Boolean := False;
7564       First_Language : Language_Index;
7565       OK             : Boolean;
7566
7567       Last_Spec : Natural;
7568       Last_Body : Natural;
7569       Last_Sep  : Natural;
7570
7571    begin
7572       Unit := No_Name;
7573       Alternate_Languages := No_Alternate_Language;
7574
7575       while Lang /= No_Name_List loop
7576          Language_Name := In_Tree.Name_Lists.Table (Lang).Name;
7577          Language      := Data.First_Language_Processing;
7578
7579          if Current_Verbosity = High then
7580             Write_Line
7581               ("     Testing language "
7582                & Get_Name_String (Language_Name)
7583                & " Header_File=" & Header_File'Img);
7584          end if;
7585
7586          while Language /= No_Language_Index loop
7587             if In_Tree.Languages_Data.Table (Language).Name =
7588               Language_Name
7589             then
7590                Display_Language_Name :=
7591                  In_Tree.Languages_Data.Table (Language).Display_Name;
7592                Config := In_Tree.Languages_Data.Table (Language).Config;
7593                Lang_Kind := Config.Kind;
7594
7595                if Config.Kind = File_Based then
7596
7597                   --  For file based languages, there is no Unit. Just
7598                   --  check if the file name has the implementation or,
7599                   --  if it is specified, the template suffix of the
7600                   --  language.
7601
7602                   Unit := No_Name;
7603
7604                   if not Header_File
7605                     and then Config.Naming_Data.Body_Suffix /= No_File
7606                   then
7607                      declare
7608                         Impl_Suffix : constant String :=
7609                           Get_Name_String (Config.Naming_Data.Body_Suffix);
7610
7611                      begin
7612                         if Filename'Length > Impl_Suffix'Length
7613                           and then
7614                             Filename
7615                               (Last - Impl_Suffix'Length + 1 .. Last) =
7616                               Impl_Suffix
7617                         then
7618                            Kind := Impl;
7619
7620                            if Current_Verbosity = High then
7621                               Write_Str ("     source of language ");
7622                               Write_Line
7623                                 (Get_Name_String (Display_Language_Name));
7624                            end if;
7625
7626                            return;
7627                         end if;
7628                      end;
7629                   end if;
7630
7631                   if Config.Naming_Data.Spec_Suffix /= No_File then
7632                      declare
7633                         Spec_Suffix : constant String :=
7634                           Get_Name_String
7635                             (Config.Naming_Data.Spec_Suffix);
7636
7637                      begin
7638                         if Filename'Length > Spec_Suffix'Length
7639                           and then
7640                             Filename
7641                               (Last - Spec_Suffix'Length + 1 .. Last) =
7642                               Spec_Suffix
7643                         then
7644                            Kind := Spec;
7645
7646                            if Current_Verbosity = High then
7647                               Write_Str ("     header file of language ");
7648                               Write_Line
7649                                 (Get_Name_String (Display_Language_Name));
7650                            end if;
7651
7652                            if Header_File then
7653                               Alternate_Language_Table.Increment_Last
7654                                 (In_Tree.Alt_Langs);
7655                               In_Tree.Alt_Langs.Table
7656                                 (Alternate_Language_Table.Last
7657                                    (In_Tree.Alt_Langs)) :=
7658                                 (Language => Language,
7659                                  Next     => Alternate_Languages);
7660                               Alternate_Languages :=
7661                                 Alternate_Language_Table.Last
7662                                   (In_Tree.Alt_Langs);
7663                            else
7664                               Header_File    := True;
7665                               First_Language := Language;
7666                            end if;
7667                         end if;
7668                      end;
7669                   end if;
7670
7671                elsif not Header_File then
7672                   --  Unit based language
7673
7674                   OK := Config.Naming_Data.Dot_Replacement /= No_File;
7675
7676                   if OK then
7677
7678                      --  Check casing
7679                      --  ??? Are we doing this once per file in the project ?
7680                      --  It should be done only once per project.
7681
7682                      case Config.Naming_Data.Casing is
7683                         when All_Lower_Case =>
7684                            for J in Filename'Range loop
7685                               if Is_Letter (Filename (J)) then
7686                                  if not Is_Lower (Filename (J)) then
7687                                     OK := False;
7688                                     exit;
7689                                  end if;
7690                               end if;
7691                            end loop;
7692
7693                         when All_Upper_Case =>
7694                            for J in Filename'Range loop
7695                               if Is_Letter (Filename (J)) then
7696                                  if not Is_Upper (Filename (J)) then
7697                                     OK := False;
7698                                     exit;
7699                                  end if;
7700                               end if;
7701                            end loop;
7702
7703                         when others =>
7704                            OK := False;
7705                      end case;
7706                   end if;
7707
7708                   if OK then
7709                      Last_Spec := Natural'Last;
7710                      Last_Body := Natural'Last;
7711                      Last_Sep  := Natural'Last;
7712
7713                      if Config.Naming_Data.Separate_Suffix /= No_File
7714                        and then
7715                          Config.Naming_Data.Separate_Suffix /=
7716                            Config.Naming_Data.Body_Suffix
7717                      then
7718                         declare
7719                            Suffix : constant String :=
7720                              Get_Name_String
7721                                (Config.Naming_Data.Separate_Suffix);
7722                         begin
7723                            if Filename'Length > Suffix'Length
7724                              and then
7725                                Filename
7726                                  (Last - Suffix'Length + 1 .. Last) =
7727                                  Suffix
7728                            then
7729                               Last_Sep := Last - Suffix'Length;
7730                            end if;
7731                         end;
7732                      end if;
7733
7734                      if Config.Naming_Data.Body_Suffix /= No_File then
7735                         declare
7736                            Suffix : constant String :=
7737                              Get_Name_String
7738                                (Config.Naming_Data.Body_Suffix);
7739                         begin
7740                            if Filename'Length > Suffix'Length
7741                              and then
7742                                Filename
7743                                  (Last - Suffix'Length + 1 .. Last) =
7744                                  Suffix
7745                            then
7746                               Last_Body := Last - Suffix'Length;
7747                            end if;
7748                         end;
7749                      end if;
7750
7751                      if Config.Naming_Data.Spec_Suffix /= No_File then
7752                         declare
7753                            Suffix : constant String :=
7754                              Get_Name_String
7755                                (Config.Naming_Data.Spec_Suffix);
7756                         begin
7757                            if Filename'Length > Suffix'Length
7758                              and then
7759                                Filename
7760                                  (Last - Suffix'Length + 1 .. Last) =
7761                                  Suffix
7762                            then
7763                               Last_Spec := Last - Suffix'Length;
7764                            end if;
7765                         end;
7766                      end if;
7767
7768                      declare
7769                         Last_Min : constant Natural :=
7770                                      Natural'Min (Natural'Min (Last_Spec,
7771                                                                Last_Body),
7772                                                                Last_Sep);
7773
7774                      begin
7775                         OK := Last_Min < Last;
7776
7777                         if OK then
7778                            Last := Last_Min;
7779
7780                            if Last_Min = Last_Spec then
7781                               Kind := Spec;
7782
7783                            elsif Last_Min = Last_Body then
7784                               Kind := Impl;
7785
7786                            else
7787                               Kind := Sep;
7788                            end if;
7789                         end if;
7790                      end;
7791                   end if;
7792
7793                   if OK then
7794
7795                      --  Replace dot replacements with dots
7796
7797                      Name_Len := 0;
7798
7799                      declare
7800                         J : Positive := Filename'First;
7801
7802                         Dot_Replacement : constant String :=
7803                           Get_Name_String
7804                             (Config.Naming_Data.
7805                                  Dot_Replacement);
7806
7807                         Max : constant Positive :=
7808                           Last - Dot_Replacement'Length + 1;
7809
7810                      begin
7811                         loop
7812                            Name_Len := Name_Len + 1;
7813
7814                            if J <= Max and then
7815                              Filename
7816                                (J .. J + Dot_Replacement'Length - 1) =
7817                                Dot_Replacement
7818                            then
7819                               Name_Buffer (Name_Len) := '.';
7820                               J := J + Dot_Replacement'Length;
7821
7822                            else
7823                               if Filename (J) = '.' then
7824                                  OK := False;
7825                                  exit;
7826                               end if;
7827
7828                               Name_Buffer (Name_Len) :=
7829                                 GNAT.Case_Util.To_Lower (Filename (J));
7830                               J := J + 1;
7831                            end if;
7832
7833                            exit when J > Last;
7834                         end loop;
7835                      end;
7836                   end if;
7837
7838                   if OK then
7839
7840                      --  The name buffer should contain the name of the
7841                      --  the unit, if it is one.
7842
7843                      --  Check that this is a valid unit name
7844
7845                      Check_Ada_Name (Name_Buffer (1 .. Name_Len), Unit);
7846
7847                      if Unit /= No_Name then
7848
7849                         if Current_Verbosity = High then
7850                            if Kind = Spec then
7851                               Write_Str ("     spec of ");
7852                            else
7853                               Write_Str ("     body of ");
7854                            end if;
7855
7856                            Write_Str (Get_Name_String (Unit));
7857                            Write_Str (" (language ");
7858                            Write_Str
7859                              (Get_Name_String (Display_Language_Name));
7860                            Write_Line (")");
7861                         end if;
7862
7863                         --  Comments required, declare block should
7864                         --  be named ???
7865
7866                         declare
7867                            Unit_Except : constant Unit_Exception :=
7868                              Unit_Exceptions.Get (Unit);
7869
7870                            procedure Masked_Unit (Spec : Boolean);
7871                            --  Indicate that there is an exception for
7872                            --  the same unit, so the file is not a
7873                            --  source for the unit.
7874
7875                            -----------------
7876                            -- Masked_Unit --
7877                            -----------------
7878
7879                            procedure Masked_Unit (Spec : Boolean) is
7880                            begin
7881                               if Current_Verbosity = High then
7882                                  Write_Str ("   """);
7883                                  Write_Str (Filename);
7884                                  Write_Str (""" contains the ");
7885
7886                                  if Spec then
7887                                     Write_Str ("spec");
7888                                  else
7889                                     Write_Str ("body");
7890                                  end if;
7891
7892                                  Write_Str
7893                                    (" of a unit that is found in """);
7894
7895                                  if Spec then
7896                                     Write_Str
7897                                       (Get_Name_String
7898                                          (Unit_Except.Spec));
7899                                  else
7900                                     Write_Str
7901                                       (Get_Name_String
7902                                          (Unit_Except.Impl));
7903                                  end if;
7904
7905                                  Write_Line (""" (ignored)");
7906                               end if;
7907
7908                               Language := No_Language_Index;
7909                            end Masked_Unit;
7910
7911                         begin
7912                            if Kind = Spec then
7913                               if Unit_Except.Spec /= No_File
7914                                 and then Unit_Except.Spec /= File_Name
7915                               then
7916                                  Masked_Unit (Spec => True);
7917                               end if;
7918
7919                            else
7920                               if Unit_Except.Impl /= No_File
7921                                 and then Unit_Except.Impl /= File_Name
7922                               then
7923                                  Masked_Unit (Spec => False);
7924                               end if;
7925                            end if;
7926                         end;
7927
7928                         return;
7929                      end if;
7930                   end if;
7931                end if;
7932             end if;
7933
7934             Language := In_Tree.Languages_Data.Table (Language).Next;
7935          end loop;
7936
7937          Lang := In_Tree.Name_Lists.Table (Lang).Next;
7938       end loop;
7939
7940       --  Comment needed here ???
7941
7942       if Header_File then
7943          Language := First_Language;
7944
7945       else
7946          Language := No_Language_Index;
7947
7948          if Current_Verbosity = High then
7949             Write_Line ("     not a source of any language");
7950          end if;
7951       end if;
7952    end Check_Naming_Schemes;
7953
7954    ----------------
7955    -- Check_File --
7956    ----------------
7957
7958    procedure Check_File
7959      (Project           : Project_Id;
7960       In_Tree           : Project_Tree_Ref;
7961       Data              : in out Project_Data;
7962       Name              : String;
7963       File_Name         : File_Name_Type;
7964       Display_File_Name : File_Name_Type;
7965       Source_Directory  : String;
7966       For_All_Sources   : Boolean)
7967    is
7968       Display_Path    : constant String :=
7969         Normalize_Pathname
7970           (Name           => Name,
7971            Directory      => Source_Directory,
7972            Resolve_Links  => Opt.Follow_Links_For_Files,
7973            Case_Sensitive => True);
7974
7975       Name_Loc          : Name_Location := Source_Names.Get (File_Name);
7976       Path_Id           : Path_Name_Type;
7977       Display_Path_Id   : Path_Name_Type;
7978       Check_Name        : Boolean := False;
7979       Alternate_Languages : Alternate_Language_Id := No_Alternate_Language;
7980       Language          : Language_Index;
7981       Source            : Source_Id;
7982       Other_Part        : Source_Id;
7983       Add_Src           : Boolean;
7984       Src_Ind           : Source_File_Index;
7985       Src_Data          : Source_Data;
7986       Unit              : Name_Id;
7987       Source_To_Replace : Source_Id := No_Source;
7988       Language_Name         : Name_Id;
7989       Display_Language_Name : Name_Id;
7990       Lang_Kind             : Language_Kind;
7991       Kind                  : Source_Kind := Spec;
7992
7993    begin
7994       Name_Len := Display_Path'Length;
7995       Name_Buffer (1 .. Name_Len) := Display_Path;
7996       Display_Path_Id := Name_Find;
7997
7998       if Osint.File_Names_Case_Sensitive then
7999          Path_Id := Display_Path_Id;
8000       else
8001          Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
8002          Path_Id := Name_Find;
8003       end if;
8004
8005       if Name_Loc = No_Name_Location then
8006          Check_Name := For_All_Sources;
8007
8008       else
8009          if Name_Loc.Found then
8010
8011             --  Check if it is OK to have the same file name in several
8012             --  source directories.
8013
8014             if not Data.Known_Order_Of_Source_Dirs then
8015                Error_Msg_File_1 := File_Name;
8016                Error_Msg
8017                  (Project, In_Tree,
8018                   "{ is found in several source directories",
8019                   Name_Loc.Location);
8020             end if;
8021
8022          else
8023             Name_Loc.Found := True;
8024
8025             Source_Names.Set (File_Name, Name_Loc);
8026
8027             if Name_Loc.Source = No_Source then
8028                Check_Name := True;
8029
8030             else
8031                In_Tree.Sources.Table (Name_Loc.Source).Path :=
8032                  (Path_Id, Display_Path_Id);
8033
8034                Source_Paths_Htable.Set
8035                  (In_Tree.Source_Paths_HT,
8036                   Path_Id,
8037                   Name_Loc.Source);
8038
8039                --  Check if this is a subunit
8040
8041                if In_Tree.Sources.Table (Name_Loc.Source).Unit /= No_Name
8042                  and then
8043                    In_Tree.Sources.Table (Name_Loc.Source).Kind = Impl
8044                then
8045                   Src_Ind := Sinput.P.Load_Project_File
8046                     (Get_Name_String (Path_Id));
8047
8048                   if Sinput.P.Source_File_Is_Subunit (Src_Ind) then
8049                      In_Tree.Sources.Table (Name_Loc.Source).Kind := Sep;
8050                   end if;
8051                end if;
8052             end if;
8053          end if;
8054       end if;
8055
8056       if Check_Name then
8057          Other_Part := No_Source;
8058
8059          Check_Naming_Schemes
8060            (In_Tree               => In_Tree,
8061             Data                  => Data,
8062             Filename              => Get_Name_String (File_Name),
8063             File_Name             => File_Name,
8064             Alternate_Languages   => Alternate_Languages,
8065             Language              => Language,
8066             Language_Name         => Language_Name,
8067             Display_Language_Name => Display_Language_Name,
8068             Unit                  => Unit,
8069             Lang_Kind             => Lang_Kind,
8070             Kind                  => Kind);
8071
8072          if Language = No_Language_Index then
8073
8074             --  A file name in a list must be a source of a language
8075
8076             if Name_Loc.Found then
8077                Error_Msg_File_1 := File_Name;
8078                Error_Msg
8079                  (Project,
8080                   In_Tree,
8081                   "language unknown for {",
8082                   Name_Loc.Location);
8083             end if;
8084
8085          else
8086             --  Check if the same file name or unit is used in the prj tree
8087
8088             Source := In_Tree.First_Source;
8089             Add_Src := True;
8090             while Source /= No_Source loop
8091                Src_Data := In_Tree.Sources.Table (Source);
8092
8093                if Unit /= No_Name
8094                  and then Src_Data.Unit = Unit
8095                  and then
8096                    ((Src_Data.Kind = Spec and then Kind = Impl)
8097                       or else
8098                     (Src_Data.Kind = Impl and then Kind = Spec))
8099                then
8100                   Other_Part := Source;
8101
8102                elsif (Unit /= No_Name
8103                        and then Src_Data.Unit = Unit
8104                        and then
8105                          (Src_Data.Kind = Kind
8106                             or else
8107                          (Src_Data.Kind = Sep and then Kind = Impl)
8108                             or else
8109                          (Src_Data.Kind = Impl and then Kind = Sep)))
8110                  or else (Unit = No_Name and then Src_Data.File = File_Name)
8111                then
8112                   --  Duplication of file/unit in same project is only
8113                   --  allowed if order of source directories is known.
8114
8115                   if Project = Src_Data.Project then
8116                      if Data.Known_Order_Of_Source_Dirs then
8117                         Add_Src := False;
8118
8119                      elsif Unit /= No_Name then
8120                         Error_Msg_Name_1 := Unit;
8121                         Error_Msg
8122                           (Project, In_Tree, "duplicate unit %%", No_Location);
8123                         Add_Src := False;
8124
8125                      else
8126                         Error_Msg_File_1 := File_Name;
8127                         Error_Msg
8128                           (Project, In_Tree, "duplicate source file name {",
8129                            No_Location);
8130                         Add_Src := False;
8131                      end if;
8132
8133                      --  Do not allow the same unit name in different
8134                      --  projects, except if one is extending the other.
8135
8136                      --  For a file based language, the same file name
8137                      --  replaces a file in a project being extended, but
8138                      --  it is allowed to have the same file name in
8139                      --  unrelated projects.
8140
8141                   elsif Is_Extending
8142                     (Project, Src_Data.Project, In_Tree)
8143                   then
8144                      Source_To_Replace := Source;
8145
8146                   elsif Unit /= No_Name then
8147                      Error_Msg_Name_1 := Unit;
8148                      Error_Msg
8149                        (Project, In_Tree,
8150                         "unit %% cannot belong to several projects",
8151                         No_Location);
8152
8153                      Error_Msg_Name_1 := In_Tree.Projects.Table (Project).Name;
8154                      Error_Msg_Name_2 := Name_Id (Display_Path_Id);
8155                      Error_Msg
8156                        (Project, In_Tree, "\  project %%, %%", No_Location);
8157
8158                      Error_Msg_Name_1 :=
8159                        In_Tree.Projects.Table (Src_Data.Project).Name;
8160                      Error_Msg_Name_2 := Name_Id (Src_Data.Path.Display_Name);
8161                      Error_Msg
8162                        (Project, In_Tree, "\  project %%, %%", No_Location);
8163
8164                      Add_Src := False;
8165                   end if;
8166                end if;
8167
8168                Source := Src_Data.Next_In_Sources;
8169             end loop;
8170
8171             if Add_Src then
8172                Add_Source
8173                  (Id                  => Source,
8174                   Data                => Data,
8175                   In_Tree             => In_Tree,
8176                   Project             => Project,
8177                   Lang                => Language_Name,
8178                   Lang_Id             => Language,
8179                   Lang_Kind           => Lang_Kind,
8180                   Kind                => Kind,
8181                   Alternate_Languages => Alternate_Languages,
8182                   File_Name           => File_Name,
8183                   Display_File        => Display_File_Name,
8184                   Other_Part          => Other_Part,
8185                   Unit                => Unit,
8186                   Path                => Path_Id,
8187                   Display_Path        => Display_Path_Id,
8188                   Source_To_Replace   => Source_To_Replace);
8189             end if;
8190          end if;
8191       end if;
8192    end Check_File;
8193
8194    ------------------------
8195    -- Search_Directories --
8196    ------------------------
8197
8198    procedure Search_Directories
8199      (Project         : Project_Id;
8200       In_Tree         : Project_Tree_Ref;
8201       Data            : in out Project_Data;
8202       For_All_Sources : Boolean)
8203    is
8204       Source_Dir        : String_List_Id;
8205       Element           : String_Element;
8206       Dir               : Dir_Type;
8207       Name              : String (1 .. 1_000);
8208       Last              : Natural;
8209       File_Name         : File_Name_Type;
8210       Display_File_Name : File_Name_Type;
8211
8212    begin
8213       if Current_Verbosity = High then
8214          Write_Line ("Looking for sources:");
8215       end if;
8216
8217       --  Loop through subdirectories
8218
8219       Source_Dir := Data.Source_Dirs;
8220       while Source_Dir /= Nil_String loop
8221          begin
8222             Element := In_Tree.String_Elements.Table (Source_Dir);
8223             if Element.Value /= No_Name then
8224                Get_Name_String (Element.Display_Value);
8225
8226                declare
8227                   Source_Directory : constant String :=
8228                                        Name_Buffer (1 .. Name_Len) &
8229                                          Directory_Separator;
8230
8231                   Dir_Last : constant Natural :=
8232                                        Compute_Directory_Last
8233                                          (Source_Directory);
8234
8235                begin
8236                   if Current_Verbosity = High then
8237                      Write_Str ("Source_Dir = ");
8238                      Write_Line (Source_Directory);
8239                   end if;
8240
8241                   --  We look to every entry in the source directory
8242
8243                   Open (Dir, Source_Directory);
8244
8245                   loop
8246                      Read (Dir, Name, Last);
8247
8248                      exit when Last = 0;
8249
8250                      --  ??? Duplicate system call here, we just did a
8251                      --  a similar one. Maybe Ada.Directories would be more
8252                      --  appropriate here
8253
8254                      if Is_Regular_File
8255                        (Source_Directory & Name (1 .. Last))
8256                      then
8257                         if Current_Verbosity = High then
8258                            Write_Str  ("   Checking ");
8259                            Write_Line (Name (1 .. Last));
8260                         end if;
8261
8262                         Name_Len := Last;
8263                         Name_Buffer (1 .. Name_Len) := Name (1 .. Last);
8264                         Display_File_Name := Name_Find;
8265
8266                         if Osint.File_Names_Case_Sensitive then
8267                            File_Name := Display_File_Name;
8268                         else
8269                            Canonical_Case_File_Name
8270                              (Name_Buffer (1 .. Name_Len));
8271                            File_Name := Name_Find;
8272                         end if;
8273
8274                         declare
8275                            FF : File_Found :=
8276                                   Excluded_Sources_Htable.Get (File_Name);
8277
8278                         begin
8279                            if FF /= No_File_Found then
8280                               if not FF.Found then
8281                                  FF.Found := True;
8282                                  Excluded_Sources_Htable.Set
8283                                    (File_Name, FF);
8284
8285                                  if Current_Verbosity = High then
8286                                     Write_Str ("     excluded source """);
8287                                     Write_Str (Get_Name_String (File_Name));
8288                                     Write_Line ("""");
8289                                  end if;
8290                               end if;
8291
8292                            else
8293                               Check_File
8294                                 (Project           => Project,
8295                                  In_Tree           => In_Tree,
8296                                  Data              => Data,
8297                                  Name              => Name (1 .. Last),
8298                                  File_Name         => File_Name,
8299                                  Display_File_Name => Display_File_Name,
8300                                  Source_Directory  => Source_Directory
8301                                    (Source_Directory'First .. Dir_Last),
8302                                  For_All_Sources   => For_All_Sources);
8303                            end if;
8304                         end;
8305                      end if;
8306                   end loop;
8307
8308                   Close (Dir);
8309                end;
8310             end if;
8311
8312          exception
8313             when Directory_Error =>
8314                null;
8315          end;
8316
8317          Source_Dir := Element.Next;
8318       end loop;
8319
8320       if Current_Verbosity = High then
8321          Write_Line ("end Looking for sources.");
8322       end if;
8323    end Search_Directories;
8324
8325    ----------------------
8326    -- Look_For_Sources --
8327    ----------------------
8328
8329    procedure Look_For_Sources
8330      (Project     : Project_Id;
8331       In_Tree     : Project_Tree_Ref;
8332       Data        : in out Project_Data;
8333       Current_Dir : String)
8334    is
8335       procedure Remove_Locally_Removed_Files_From_Units;
8336       --  Mark all locally removed sources as such in the Units table
8337
8338       procedure Process_Sources_In_Multi_Language_Mode;
8339       --  Find all source files when in multi language mode
8340
8341       ---------------------------------------------
8342       -- Remove_Locally_Removed_Files_From_Units --
8343       ---------------------------------------------
8344
8345       procedure Remove_Locally_Removed_Files_From_Units is
8346          Excluded : File_Found;
8347          OK       : Boolean;
8348          Unit     : Unit_Data;
8349          Extended : Project_Id;
8350
8351       begin
8352          Excluded := Excluded_Sources_Htable.Get_First;
8353          while Excluded /= No_File_Found loop
8354             OK := False;
8355
8356             For_Each_Unit :
8357             for Index in Unit_Table.First ..
8358               Unit_Table.Last (In_Tree.Units)
8359             loop
8360                Unit := In_Tree.Units.Table (Index);
8361
8362                for Kind in Spec_Or_Body'Range loop
8363                   if Unit.File_Names (Kind).Name = Excluded.File then
8364                      OK := True;
8365
8366                      --  Check that this is from the current project or
8367                      --  that the current project extends.
8368
8369                      Extended := Unit.File_Names (Kind).Project;
8370
8371                      if Extended = Project
8372                        or else Project_Extends (Project, Extended, In_Tree)
8373                      then
8374                         Unit.File_Names (Kind).Path.Name := Slash;
8375                         Unit.File_Names (Kind).Needs_Pragma := False;
8376                         In_Tree.Units.Table (Index) := Unit;
8377                         Add_Forbidden_File_Name
8378                           (Unit.File_Names (Kind).Name);
8379                      else
8380                         Error_Msg
8381                           (Project, In_Tree,
8382                            "cannot remove a source from " &
8383                            "another project",
8384                            Excluded.Location);
8385                      end if;
8386                      exit For_Each_Unit;
8387                   end if;
8388                end loop;
8389             end loop For_Each_Unit;
8390
8391             if not OK then
8392                Err_Vars.Error_Msg_File_1 := Excluded.File;
8393                Error_Msg
8394                  (Project, In_Tree, "unknown file {", Excluded.Location);
8395             end if;
8396
8397             Excluded := Excluded_Sources_Htable.Get_Next;
8398          end loop;
8399       end Remove_Locally_Removed_Files_From_Units;
8400
8401       --------------------------------------------
8402       -- Process_Sources_In_Multi_Language_Mode --
8403       --------------------------------------------
8404
8405       procedure Process_Sources_In_Multi_Language_Mode is
8406          Source   : Source_Id;
8407          Src_Data : Source_Data;
8408          Name_Loc : Name_Location;
8409          OK       : Boolean;
8410          FF       : File_Found;
8411
8412       begin
8413          --  First, put all naming exceptions if any, in the Source_Names table
8414
8415          Unit_Exceptions.Reset;
8416
8417          Source := Data.First_Source;
8418          while Source /= No_Source loop
8419             Src_Data := In_Tree.Sources.Table (Source);
8420
8421             --  A file that is excluded cannot also be an exception file name
8422
8423             if Excluded_Sources_Htable.Get (Src_Data.File) /=
8424               No_File_Found
8425             then
8426                Error_Msg_File_1 := Src_Data.File;
8427                Error_Msg
8428                  (Project, In_Tree,
8429                   "{ cannot be both excluded and an exception file name",
8430                   No_Location);
8431             end if;
8432
8433             Name_Loc := (Name     => Src_Data.File,
8434                          Location => No_Location,
8435                          Source   => Source,
8436                          Except   => Src_Data.Unit /= No_Name,
8437                          Found    => False);
8438
8439             if Current_Verbosity = High then
8440                Write_Str ("Putting source #");
8441                Write_Str (Source'Img);
8442                Write_Str (", file ");
8443                Write_Str (Get_Name_String (Src_Data.File));
8444                Write_Line (" in Source_Names");
8445             end if;
8446
8447             Source_Names.Set (K => Src_Data.File, E => Name_Loc);
8448
8449             --  If this is an Ada exception, record it in table Unit_Exceptions
8450
8451             if Src_Data.Unit /= No_Name then
8452                declare
8453                   Unit_Except : Unit_Exception :=
8454                                   Unit_Exceptions.Get (Src_Data.Unit);
8455
8456                begin
8457                   Unit_Except.Name := Src_Data.Unit;
8458
8459                   if Src_Data.Kind = Spec then
8460                      Unit_Except.Spec := Src_Data.File;
8461                   else
8462                      Unit_Except.Impl := Src_Data.File;
8463                   end if;
8464
8465                   Unit_Exceptions.Set (Src_Data.Unit, Unit_Except);
8466                end;
8467             end if;
8468
8469             Source := Src_Data.Next_In_Project;
8470          end loop;
8471
8472          Find_Explicit_Sources
8473            (Current_Dir, Project, In_Tree, Data);
8474
8475          --  Mark as such the sources that are declared as excluded
8476
8477          FF := Excluded_Sources_Htable.Get_First;
8478          while FF /= No_File_Found loop
8479             OK     := False;
8480             Source := In_Tree.First_Source;
8481
8482             while Source /= No_Source loop
8483                Src_Data := In_Tree.Sources.Table (Source);
8484
8485                if Src_Data.File = FF.File then
8486
8487                   --  Check that this is from this project or a project that
8488                   --  the current project extends.
8489
8490                   if Src_Data.Project = Project or else
8491                     Is_Extending (Project, Src_Data.Project, In_Tree)
8492                   then
8493                      Src_Data.Locally_Removed := True;
8494                      Src_Data.In_Interfaces := False;
8495                      In_Tree.Sources.Table (Source) := Src_Data;
8496                      Add_Forbidden_File_Name (FF.File);
8497                      OK := True;
8498                      exit;
8499                   end if;
8500                end if;
8501
8502                Source := Src_Data.Next_In_Sources;
8503             end loop;
8504
8505             if not FF.Found and not OK then
8506                Err_Vars.Error_Msg_File_1 := FF.File;
8507                Error_Msg (Project, In_Tree, "unknown file {", FF.Location);
8508             end if;
8509
8510             FF := Excluded_Sources_Htable.Get_Next;
8511          end loop;
8512
8513          --  Check that two sources of this project do not have the same object
8514          --  file name.
8515
8516          Check_Object_File_Names : declare
8517             Src_Id      : Source_Id;
8518             Src_Data    : Source_Data;
8519             Source_Name : File_Name_Type;
8520
8521             procedure Check_Object;
8522             --  Check if object file name of the current source is already in
8523             --  hash table Object_File_Names. If it is, report an error. If it
8524             --  is not, put it there with the file name of the current source.
8525
8526             ------------------
8527             -- Check_Object --
8528             ------------------
8529
8530             procedure Check_Object is
8531             begin
8532                Source_Name := Object_File_Names.Get (Src_Data.Object);
8533
8534                if Source_Name /= No_File then
8535                   Error_Msg_File_1 := Src_Data.File;
8536                   Error_Msg_File_2 := Source_Name;
8537                   Error_Msg
8538                     (Project,
8539                      In_Tree,
8540                      "{ and { have the same object file name",
8541                      No_Location);
8542
8543                else
8544                   Object_File_Names.Set (Src_Data.Object, Src_Data.File);
8545                end if;
8546             end Check_Object;
8547
8548          --  Start of processing for Check_Object_File_Names
8549
8550          begin
8551             Object_File_Names.Reset;
8552             Src_Id := In_Tree.First_Source;
8553             while Src_Id /= No_Source loop
8554                Src_Data := In_Tree.Sources.Table (Src_Id);
8555
8556                if Src_Data.Compiled and then Src_Data.Object_Exists
8557                  and then Project_Extends (Project, Src_Data.Project, In_Tree)
8558                then
8559                   if Src_Data.Unit = No_Name then
8560                      if Src_Data.Kind = Impl then
8561                         Check_Object;
8562                      end if;
8563
8564                   else
8565                      case Src_Data.Kind is
8566                         when Spec =>
8567                            if Src_Data.Other_Part = No_Source then
8568                               Check_Object;
8569                            end if;
8570
8571                         when Sep =>
8572                            null;
8573
8574                         when Impl =>
8575                            if Src_Data.Other_Part /= No_Source then
8576                               Check_Object;
8577
8578                            else
8579                               --  Check if it is a subunit
8580
8581                               declare
8582                                  Src_Ind : constant Source_File_Index :=
8583                                              Sinput.P.Load_Project_File
8584                                                (Get_Name_String
8585                                                   (Src_Data.Path.Name));
8586
8587                               begin
8588                                  if Sinput.P.Source_File_Is_Subunit
8589                                      (Src_Ind)
8590                                  then
8591                                     In_Tree.Sources.Table (Src_Id).Kind := Sep;
8592                                  else
8593                                     Check_Object;
8594                                  end if;
8595                               end;
8596                            end if;
8597                      end case;
8598                   end if;
8599                end if;
8600
8601                Src_Id := Src_Data.Next_In_Sources;
8602             end loop;
8603          end Check_Object_File_Names;
8604       end Process_Sources_In_Multi_Language_Mode;
8605
8606    --  Start of processing for Look_For_Sources
8607
8608    begin
8609       Source_Names.Reset;
8610       Find_Excluded_Sources (Project, In_Tree, Data);
8611
8612       case Get_Mode is
8613          when Ada_Only =>
8614             if Is_A_Language (In_Tree, Data, Name_Ada) then
8615                Find_Explicit_Sources (Current_Dir, Project, In_Tree, Data);
8616                Remove_Locally_Removed_Files_From_Units;
8617             end if;
8618
8619          when Multi_Language =>
8620             if Data.First_Language_Processing /= No_Language_Index then
8621                Process_Sources_In_Multi_Language_Mode;
8622             end if;
8623       end case;
8624    end Look_For_Sources;
8625
8626    ------------------
8627    -- Path_Name_Of --
8628    ------------------
8629
8630    function Path_Name_Of
8631      (File_Name : File_Name_Type;
8632       Directory : Path_Name_Type) return String
8633    is
8634       Result        : String_Access;
8635       The_Directory : constant String := Get_Name_String (Directory);
8636
8637    begin
8638       Get_Name_String (File_Name);
8639       Result :=
8640         Locate_Regular_File
8641           (File_Name => Name_Buffer (1 .. Name_Len),
8642            Path      => The_Directory);
8643
8644       if Result = null then
8645          return "";
8646       else
8647          Canonical_Case_File_Name (Result.all);
8648          return Result.all;
8649       end if;
8650    end Path_Name_Of;
8651
8652    -------------------------------
8653    -- Prepare_Ada_Naming_Exceptions --
8654    -------------------------------
8655
8656    procedure Prepare_Ada_Naming_Exceptions
8657      (List    : Array_Element_Id;
8658       In_Tree : Project_Tree_Ref;
8659       Kind    : Spec_Or_Body)
8660    is
8661       Current : Array_Element_Id;
8662       Element : Array_Element;
8663       Unit    : Unit_Info;
8664
8665    begin
8666       --  Traverse the list
8667
8668       Current := List;
8669       while Current /= No_Array_Element loop
8670          Element := In_Tree.Array_Elements.Table (Current);
8671
8672          if Element.Index /= No_Name then
8673             Unit :=
8674               (Kind => Kind,
8675                Unit => Element.Index,
8676                Next => No_Ada_Naming_Exception);
8677             Reverse_Ada_Naming_Exceptions.Set
8678               (Unit, (Element.Value.Value, Element.Value.Index));
8679             Unit.Next :=
8680               Ada_Naming_Exceptions.Get (File_Name_Type (Element.Value.Value));
8681             Ada_Naming_Exception_Table.Increment_Last;
8682             Ada_Naming_Exception_Table.Table
8683               (Ada_Naming_Exception_Table.Last) := Unit;
8684             Ada_Naming_Exceptions.Set
8685               (File_Name_Type (Element.Value.Value),
8686                Ada_Naming_Exception_Table.Last);
8687          end if;
8688
8689          Current := Element.Next;
8690       end loop;
8691    end Prepare_Ada_Naming_Exceptions;
8692
8693    ---------------------
8694    -- Project_Extends --
8695    ---------------------
8696
8697    function Project_Extends
8698      (Extending : Project_Id;
8699       Extended  : Project_Id;
8700       In_Tree   : Project_Tree_Ref) return Boolean
8701    is
8702       Current : Project_Id := Extending;
8703
8704    begin
8705       loop
8706          if Current = No_Project then
8707             return False;
8708
8709          elsif Current = Extended then
8710             return True;
8711          end if;
8712
8713          Current := In_Tree.Projects.Table (Current).Extends;
8714       end loop;
8715    end Project_Extends;
8716
8717    -----------------------
8718    -- Record_Ada_Source --
8719    -----------------------
8720
8721    procedure Record_Ada_Source
8722      (File_Name       : File_Name_Type;
8723       Path_Name       : Path_Name_Type;
8724       Project         : Project_Id;
8725       In_Tree         : Project_Tree_Ref;
8726       Data            : in out Project_Data;
8727       Location        : Source_Ptr;
8728       Current_Source  : in out String_List_Id;
8729       Source_Recorded : in out Boolean;
8730       Current_Dir     : String)
8731    is
8732       Canonical_File_Name : File_Name_Type;
8733       Canonical_Path_Name : Path_Name_Type;
8734
8735       Exception_Id : Ada_Naming_Exception_Id;
8736       Unit_Name    : Name_Id;
8737       Unit_Kind    : Spec_Or_Body;
8738       Unit_Ind     : Int := 0;
8739       Info         : Unit_Info;
8740       Name_Index   : Name_And_Index;
8741       Needs_Pragma : Boolean;
8742
8743       The_Location    : Source_Ptr              := Location;
8744       Previous_Source : constant String_List_Id := Current_Source;
8745       Except_Name     : Name_And_Index          := No_Name_And_Index;
8746
8747       Unit_Prj : Unit_Project;
8748
8749       File_Name_Recorded : Boolean := False;
8750
8751    begin
8752       if Osint.File_Names_Case_Sensitive then
8753          Canonical_File_Name := File_Name;
8754          Canonical_Path_Name := Path_Name;
8755       else
8756          Get_Name_String (File_Name);
8757          Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
8758          Canonical_File_Name := Name_Find;
8759
8760          declare
8761             Canonical_Path : constant String :=
8762                                Normalize_Pathname
8763                                  (Get_Name_String (Path_Name),
8764                                   Directory      => Current_Dir,
8765                                   Resolve_Links  => Opt.Follow_Links_For_Files,
8766                                   Case_Sensitive => False);
8767          begin
8768             Name_Len := 0;
8769             Add_Str_To_Name_Buffer (Canonical_Path);
8770             Canonical_Path_Name := Name_Find;
8771          end;
8772       end if;
8773
8774       --  Find out the unit name, the unit kind and if it needs
8775       --  a specific SFN pragma.
8776
8777       Get_Unit
8778         (In_Tree             => In_Tree,
8779          Canonical_File_Name => Canonical_File_Name,
8780          Naming              => Data.Naming,
8781          Exception_Id        => Exception_Id,
8782          Unit_Name           => Unit_Name,
8783          Unit_Kind           => Unit_Kind,
8784          Needs_Pragma        => Needs_Pragma);
8785
8786       if Exception_Id = No_Ada_Naming_Exception
8787         and then Unit_Name = No_Name
8788       then
8789          if Current_Verbosity = High then
8790             Write_Str  ("   """);
8791             Write_Str  (Get_Name_String (Canonical_File_Name));
8792             Write_Line (""" is not a valid source file name (ignored).");
8793          end if;
8794
8795       else
8796          --  Check to see if the source has been hidden by an exception,
8797          --  but only if it is not an exception.
8798
8799          if not Needs_Pragma then
8800             Except_Name :=
8801               Reverse_Ada_Naming_Exceptions.Get
8802                 ((Unit_Kind, Unit_Name, No_Ada_Naming_Exception));
8803
8804             if Except_Name /= No_Name_And_Index then
8805                if Current_Verbosity = High then
8806                   Write_Str  ("   """);
8807                   Write_Str  (Get_Name_String (Canonical_File_Name));
8808                   Write_Str  (""" contains a unit that is found in """);
8809                   Write_Str  (Get_Name_String (Except_Name.Name));
8810                   Write_Line (""" (ignored).");
8811                end if;
8812
8813                --  The file is not included in the source of the project since
8814                --  it is hidden by the exception. So, nothing else to do.
8815
8816                return;
8817             end if;
8818          end if;
8819
8820          loop
8821             if Exception_Id /= No_Ada_Naming_Exception then
8822                Info := Ada_Naming_Exception_Table.Table (Exception_Id);
8823                Exception_Id := Info.Next;
8824                Info.Next := No_Ada_Naming_Exception;
8825                Name_Index := Reverse_Ada_Naming_Exceptions.Get (Info);
8826
8827                Unit_Name := Info.Unit;
8828                Unit_Ind  := Name_Index.Index;
8829                Unit_Kind := Info.Kind;
8830             end if;
8831
8832             --  Put the file name in the list of sources of the project
8833
8834             String_Element_Table.Increment_Last (In_Tree.String_Elements);
8835             In_Tree.String_Elements.Table
8836               (String_Element_Table.Last (In_Tree.String_Elements)) :=
8837                 (Value         => Name_Id (Canonical_File_Name),
8838                  Display_Value => Name_Id (File_Name),
8839                  Location      => No_Location,
8840                  Flag          => False,
8841                  Next          => Nil_String,
8842                  Index         => Unit_Ind);
8843
8844             if Current_Source = Nil_String then
8845                Data.Ada_Sources :=
8846                  String_Element_Table.Last (In_Tree.String_Elements);
8847             else
8848                In_Tree.String_Elements.Table (Current_Source).Next :=
8849                  String_Element_Table.Last (In_Tree.String_Elements);
8850             end if;
8851
8852             Current_Source :=
8853               String_Element_Table.Last (In_Tree.String_Elements);
8854
8855             --  Put the unit in unit list
8856
8857             declare
8858                The_Unit : Unit_Index :=
8859                             Units_Htable.Get (In_Tree.Units_HT, Unit_Name);
8860
8861                The_Unit_Data : Unit_Data;
8862
8863             begin
8864                if Current_Verbosity = High then
8865                   Write_Str  ("Putting ");
8866                   Write_Str  (Get_Name_String (Unit_Name));
8867                   Write_Line (" in the unit list.");
8868                end if;
8869
8870                --  The unit is already in the list, but may be it is
8871                --  only the other unit kind (spec or body), or what is
8872                --  in the unit list is a unit of a project we are extending.
8873
8874                if The_Unit /= No_Unit_Index then
8875                   The_Unit_Data := In_Tree.Units.Table (The_Unit);
8876
8877                   if (The_Unit_Data.File_Names (Unit_Kind).Name =
8878                                                           Canonical_File_Name
8879                         and then
8880                         The_Unit_Data.File_Names
8881                           (Unit_Kind).Path.Name = Slash)
8882                     or else The_Unit_Data.File_Names (Unit_Kind).Name = No_File
8883                     or else Project_Extends
8884                       (Data.Extends,
8885                        The_Unit_Data.File_Names (Unit_Kind).Project,
8886                        In_Tree)
8887                   then
8888                      if
8889                        The_Unit_Data.File_Names (Unit_Kind).Path.Name = Slash
8890                      then
8891                         Remove_Forbidden_File_Name
8892                           (The_Unit_Data.File_Names (Unit_Kind).Name);
8893                      end if;
8894
8895                      --  Record the file name in the hash table Files_Htable
8896
8897                      Unit_Prj := (Unit => The_Unit, Project => Project);
8898                      Files_Htable.Set
8899                        (In_Tree.Files_HT,
8900                         Canonical_File_Name,
8901                         Unit_Prj);
8902
8903                      The_Unit_Data.File_Names (Unit_Kind) :=
8904                        (Name         => Canonical_File_Name,
8905                         Index        => Unit_Ind,
8906                         Display_Name => File_Name,
8907                         Path         => (Canonical_Path_Name, Path_Name),
8908                         Project      => Project,
8909                         Needs_Pragma => Needs_Pragma);
8910                      In_Tree.Units.Table (The_Unit) := The_Unit_Data;
8911                      Source_Recorded := True;
8912
8913                   elsif The_Unit_Data.File_Names (Unit_Kind).Project = Project
8914                     and then (Data.Known_Order_Of_Source_Dirs
8915                                 or else
8916                                 The_Unit_Data.File_Names
8917                                   (Unit_Kind).Path.Name = Canonical_Path_Name)
8918                   then
8919                      if Previous_Source = Nil_String then
8920                         Data.Ada_Sources := Nil_String;
8921                      else
8922                         In_Tree.String_Elements.Table (Previous_Source).Next :=
8923                           Nil_String;
8924                         String_Element_Table.Decrement_Last
8925                           (In_Tree.String_Elements);
8926                      end if;
8927
8928                      Current_Source := Previous_Source;
8929
8930                   else
8931                      --  It is an error to have two units with the same name
8932                      --  and the same kind (spec or body).
8933
8934                      if The_Location = No_Location then
8935                         The_Location :=
8936                           In_Tree.Projects.Table (Project).Location;
8937                      end if;
8938
8939                      Err_Vars.Error_Msg_Name_1 := Unit_Name;
8940                      Error_Msg
8941                        (Project, In_Tree, "duplicate unit %%", The_Location);
8942
8943                      Err_Vars.Error_Msg_Name_1 :=
8944                        In_Tree.Projects.Table
8945                          (The_Unit_Data.File_Names (Unit_Kind).Project).Name;
8946                      Err_Vars.Error_Msg_File_1 :=
8947                        File_Name_Type
8948                          (The_Unit_Data.File_Names (Unit_Kind).Path.Name);
8949                      Error_Msg
8950                        (Project, In_Tree,
8951                         "\   project file %%, {", The_Location);
8952
8953                      Err_Vars.Error_Msg_Name_1 :=
8954                        In_Tree.Projects.Table (Project).Name;
8955                      Err_Vars.Error_Msg_File_1 :=
8956                        File_Name_Type (Canonical_Path_Name);
8957                      Error_Msg
8958                        (Project, In_Tree,
8959                         "\   project file %%, {", The_Location);
8960                   end if;
8961
8962                --  It is a new unit, create a new record
8963
8964                else
8965                   --  First, check if there is no other unit with this file
8966                   --  name in another project. If it is, report error but note
8967                   --  we do that only for the first unit in the source file.
8968
8969                   Unit_Prj :=
8970                     Files_Htable.Get (In_Tree.Files_HT, Canonical_File_Name);
8971
8972                   if not File_Name_Recorded and then
8973                     Unit_Prj /= No_Unit_Project
8974                   then
8975                      Error_Msg_File_1 := File_Name;
8976                      Error_Msg_Name_1 :=
8977                        In_Tree.Projects.Table (Unit_Prj.Project).Name;
8978                      Error_Msg
8979                        (Project, In_Tree,
8980                         "{ is already a source of project %%",
8981                         Location);
8982
8983                   else
8984                      Unit_Table.Increment_Last (In_Tree.Units);
8985                      The_Unit := Unit_Table.Last (In_Tree.Units);
8986                      Units_Htable.Set
8987                        (In_Tree.Units_HT, Unit_Name, The_Unit);
8988                      Unit_Prj := (Unit => The_Unit, Project => Project);
8989                      Files_Htable.Set
8990                        (In_Tree.Files_HT,
8991                         Canonical_File_Name,
8992                         Unit_Prj);
8993                      The_Unit_Data.Name := Unit_Name;
8994                      The_Unit_Data.File_Names (Unit_Kind) :=
8995                        (Name         => Canonical_File_Name,
8996                         Index        => Unit_Ind,
8997                         Display_Name => File_Name,
8998                         Path         => (Canonical_Path_Name, Path_Name),
8999                         Project      => Project,
9000                         Needs_Pragma => Needs_Pragma);
9001                      In_Tree.Units.Table (The_Unit) := The_Unit_Data;
9002                      Source_Recorded := True;
9003                   end if;
9004                end if;
9005             end;
9006
9007             exit when Exception_Id = No_Ada_Naming_Exception;
9008             File_Name_Recorded := True;
9009          end loop;
9010       end if;
9011    end Record_Ada_Source;
9012
9013    -------------------
9014    -- Remove_Source --
9015    -------------------
9016
9017    procedure Remove_Source
9018      (Id          : Source_Id;
9019       Replaced_By : Source_Id;
9020       Project     : Project_Id;
9021       Data        : in out Project_Data;
9022       In_Tree     : Project_Tree_Ref)
9023    is
9024       Src_Data : constant Source_Data := In_Tree.Sources.Table (Id);
9025       Source   : Source_Id;
9026
9027    begin
9028       if Current_Verbosity = High then
9029          Write_Str ("Removing source #");
9030          Write_Line (Id'Img);
9031       end if;
9032
9033       if Replaced_By /= No_Source then
9034          In_Tree.Sources.Table (Id).Replaced_By := Replaced_By;
9035          In_Tree.Sources.Table (Replaced_By).Declared_In_Interfaces :=
9036            In_Tree.Sources.Table (Id).Declared_In_Interfaces;
9037       end if;
9038
9039       --  Remove the source from the global source list
9040
9041       Source := In_Tree.First_Source;
9042
9043       if Source = Id then
9044          In_Tree.First_Source := Src_Data.Next_In_Sources;
9045
9046       else
9047          while In_Tree.Sources.Table (Source).Next_In_Sources /= Id loop
9048             Source := In_Tree.Sources.Table (Source).Next_In_Sources;
9049          end loop;
9050
9051          In_Tree.Sources.Table (Source).Next_In_Sources :=
9052            Src_Data.Next_In_Sources;
9053       end if;
9054
9055       --  Remove the source from the project list
9056
9057       if Src_Data.Project = Project then
9058          Source := Data.First_Source;
9059
9060          if Source = Id then
9061             Data.First_Source := Src_Data.Next_In_Project;
9062
9063             if Src_Data.Next_In_Project = No_Source then
9064                Data.Last_Source := No_Source;
9065             end if;
9066
9067          else
9068             while In_Tree.Sources.Table (Source).Next_In_Project /= Id loop
9069                Source := In_Tree.Sources.Table (Source).Next_In_Project;
9070             end loop;
9071
9072             In_Tree.Sources.Table (Source).Next_In_Project :=
9073               Src_Data.Next_In_Project;
9074
9075             if Src_Data.Next_In_Project = No_Source then
9076                In_Tree.Projects.Table (Src_Data.Project).Last_Source := Source;
9077             end if;
9078          end if;
9079
9080       else
9081          Source := In_Tree.Projects.Table (Src_Data.Project).First_Source;
9082
9083          if Source = Id then
9084             In_Tree.Projects.Table (Src_Data.Project).First_Source :=
9085               Src_Data.Next_In_Project;
9086
9087             if Src_Data.Next_In_Project = No_Source then
9088                In_Tree.Projects.Table (Src_Data.Project).Last_Source :=
9089                  No_Source;
9090             end if;
9091
9092          else
9093             while In_Tree.Sources.Table (Source).Next_In_Project /= Id loop
9094                Source := In_Tree.Sources.Table (Source).Next_In_Project;
9095             end loop;
9096
9097             In_Tree.Sources.Table (Source).Next_In_Project :=
9098               Src_Data.Next_In_Project;
9099
9100             if Src_Data.Next_In_Project = No_Source then
9101                In_Tree.Projects.Table (Src_Data.Project).Last_Source := Source;
9102             end if;
9103          end if;
9104       end if;
9105
9106       --  Remove source from the language list
9107
9108       Source := In_Tree.Languages_Data.Table (Src_Data.Language).First_Source;
9109
9110       if Source = Id then
9111          In_Tree.Languages_Data.Table (Src_Data.Language).First_Source :=
9112            Src_Data.Next_In_Lang;
9113
9114       else
9115          while In_Tree.Sources.Table (Source).Next_In_Lang /= Id loop
9116             Source := In_Tree.Sources.Table (Source).Next_In_Lang;
9117          end loop;
9118
9119          In_Tree.Sources.Table (Source).Next_In_Lang :=
9120            Src_Data.Next_In_Lang;
9121       end if;
9122    end Remove_Source;
9123
9124    -----------------------
9125    -- Report_No_Sources --
9126    -----------------------
9127
9128    procedure Report_No_Sources
9129      (Project      : Project_Id;
9130       Lang_Name    : String;
9131       In_Tree      : Project_Tree_Ref;
9132       Location     : Source_Ptr;
9133       Continuation : Boolean := False)
9134    is
9135    begin
9136       case When_No_Sources is
9137          when Silent =>
9138             null;
9139
9140          when Warning | Error =>
9141             declare
9142                Msg : constant String :=
9143                        "<there are no " &
9144                        Lang_Name &
9145                        " sources in this project";
9146
9147             begin
9148                Error_Msg_Warn := When_No_Sources = Warning;
9149
9150                if Continuation then
9151                   Error_Msg
9152                     (Project, In_Tree, "\" & Msg, Location);
9153
9154                else
9155                   Error_Msg
9156                     (Project, In_Tree, Msg, Location);
9157                end if;
9158             end;
9159       end case;
9160    end Report_No_Sources;
9161
9162    ----------------------
9163    -- Show_Source_Dirs --
9164    ----------------------
9165
9166    procedure Show_Source_Dirs
9167      (Data    : Project_Data;
9168       In_Tree : Project_Tree_Ref)
9169    is
9170       Current : String_List_Id;
9171       Element : String_Element;
9172
9173    begin
9174       Write_Line ("Source_Dirs:");
9175
9176       Current := Data.Source_Dirs;
9177       while Current /= Nil_String loop
9178          Element := In_Tree.String_Elements.Table (Current);
9179          Write_Str  ("   ");
9180          Write_Line (Get_Name_String (Element.Value));
9181          Current := Element.Next;
9182       end loop;
9183
9184       Write_Line ("end Source_Dirs.");
9185    end Show_Source_Dirs;
9186
9187    -------------------------
9188    -- Warn_If_Not_Sources --
9189    -------------------------
9190
9191    --  comments needed in this body ???
9192
9193    procedure Warn_If_Not_Sources
9194      (Project     : Project_Id;
9195       In_Tree     : Project_Tree_Ref;
9196       Conventions : Array_Element_Id;
9197       Specs       : Boolean;
9198       Extending   : Boolean)
9199    is
9200       Conv          : Array_Element_Id;
9201       Unit          : Name_Id;
9202       The_Unit_Id   : Unit_Index;
9203       The_Unit_Data : Unit_Data;
9204       Location      : Source_Ptr;
9205
9206    begin
9207       Conv := Conventions;
9208       while Conv /= No_Array_Element loop
9209          Unit := In_Tree.Array_Elements.Table (Conv).Index;
9210          Error_Msg_Name_1 := Unit;
9211          Get_Name_String (Unit);
9212          To_Lower (Name_Buffer (1 .. Name_Len));
9213          Unit := Name_Find;
9214          The_Unit_Id := Units_Htable.Get (In_Tree.Units_HT, Unit);
9215          Location := In_Tree.Array_Elements.Table (Conv).Value.Location;
9216
9217          if The_Unit_Id = No_Unit_Index then
9218             Error_Msg (Project, In_Tree, "?unknown unit %%", Location);
9219
9220          else
9221             The_Unit_Data := In_Tree.Units.Table (The_Unit_Id);
9222             Error_Msg_Name_2 :=
9223               In_Tree.Array_Elements.Table (Conv).Value.Value;
9224
9225             if Specs then
9226                if not Check_Project
9227                  (The_Unit_Data.File_Names (Specification).Project,
9228                   Project, In_Tree, Extending)
9229                then
9230                   Error_Msg
9231                     (Project, In_Tree,
9232                      "?source of spec of unit %% (%%)" &
9233                      " cannot be found in this project",
9234                      Location);
9235                end if;
9236
9237             else
9238                if not Check_Project
9239                  (The_Unit_Data.File_Names (Body_Part).Project,
9240                   Project, In_Tree, Extending)
9241                then
9242                   Error_Msg
9243                     (Project, In_Tree,
9244                      "?source of body of unit %% (%%)" &
9245                      " cannot be found in this project",
9246                      Location);
9247                end if;
9248             end if;
9249          end if;
9250
9251          Conv := In_Tree.Array_Elements.Table (Conv).Next;
9252       end loop;
9253    end Warn_If_Not_Sources;
9254
9255 end Prj.Nmsc;