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) 2000-2012, Free Software Foundation, Inc.         --
  10 --                                                                          --
  11 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  12 -- terms of the  GNU General Public License as published  by the Free Soft- --
  13 -- ware  Foundation;  either version 3,  or (at your option) any later ver- --
  14 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  15 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  16 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  17 -- for  more details.  You should have  received  a copy of the GNU General --
  18 -- Public License  distributed with GNAT; see file COPYING3.  If not, go to --
  19 -- http://www.gnu.org/licenses for a complete copy of the license.          --
  20 --                                                                          --
  21 -- GNAT was originally developed  by the GNAT team at  New York University. --
  22 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  23 --                                                                          --
  24 ------------------------------------------------------------------------------
  25
  26 with Err_Vars; use Err_Vars;
  27 with Opt;      use Opt;
  28 with Osint;    use Osint;
  29 with Output;   use Output;
  30 with Prj.Com;
  31 with Prj.Env;  use Prj.Env;
  32 with Prj.Err;  use Prj.Err;
  33 with Prj.Tree; use Prj.Tree;
  34 with Prj.Util; use Prj.Util;
  35 with Sinput.P;
  36 with Snames;   use Snames;
  37 with Targparm; use Targparm;
  38
  39 with Ada;                        use Ada;
  40 with Ada.Characters.Handling;    use Ada.Characters.Handling;
  41 with Ada.Directories;            use Ada.Directories;
  42 with Ada.Strings;                use Ada.Strings;
  43 with Ada.Strings.Fixed;          use Ada.Strings.Fixed;
  44 with Ada.Strings.Maps.Constants; use Ada.Strings.Maps.Constants;
  45
  46 with GNAT.Case_Util;            use GNAT.Case_Util;
  47 with GNAT.Directory_Operations; use GNAT.Directory_Operations;
  48 with GNAT.Dynamic_HTables;
  49 with GNAT.Regexp;               use GNAT.Regexp;
  50 with GNAT.Table;
  51
  52 package body Prj.Nmsc is
  53
  54    No_Continuation_String : aliased String := "";
  55    Continuation_String    : aliased String := "\";
  56    --  Used in Check_Library for continuation error messages at the same
  57    --  location.
  58
  59    type Name_Location is record
  60       Name     : File_Name_Type;
  61       --  Key is duplicated, so that it is known when using functions Get_First
  62       --  and Get_Next, as these functions only return an Element.
  63
  64       Location : Source_Ptr;
  65       Source   : Source_Id := No_Source;
  66       Listed   : Boolean := False;
  67       Found    : Boolean := False;
  68    end record;
  69
  70    No_Name_Location : constant Name_Location :=
  71                         (Name     => No_File,
  72                          Location => No_Location,
  73                          Source   => No_Source,
  74                          Listed   => False,
  75                          Found    => False);
  76
  77    package Source_Names_Htable is new GNAT.Dynamic_HTables.Simple_HTable
  78      (Header_Num => Header_Num,
  79       Element    => Name_Location,
  80       No_Element => No_Name_Location,
  81       Key        => File_Name_Type,
  82       Hash       => Hash,
  83       Equal      => "=");
  84    --  File name information found in string list attribute (Source_Files or
  85    --  Source_List_File). Used to check that all referenced files were indeed
  86    --  found on the disk.
  87
  88    type Unit_Exception is record
  89       Name : Name_Id;
  90       --  Key is duplicated, so that it is known when using functions Get_First
  91       --  and Get_Next, as these functions only return an Element.
  92
  93       Spec : File_Name_Type;
  94       Impl : File_Name_Type;
  95    end record;
  96
  97    No_Unit_Exception : constant Unit_Exception := (No_Name, No_File, No_File);
  98
  99    package Unit_Exceptions_Htable is new GNAT.Dynamic_HTables.Simple_HTable
 100      (Header_Num => Header_Num,
 101       Element    => Unit_Exception,
 102       No_Element => No_Unit_Exception,
 103       Key        => Name_Id,
 104       Hash       => Hash,
 105       Equal      => "=");
 106    --  Record special naming schemes for Ada units (name of spec file and name
 107    --  of implementation file). The elements in this list come from the naming
 108    --  exceptions specified in the project files.
 109
 110    type File_Found is record
 111       File      : File_Name_Type := No_File;
 112       Excl_File : File_Name_Type := No_File;
 113       Excl_Line : Natural        := 0;
 114       Found     : Boolean        := False;
 115       Location  : Source_Ptr     := No_Location;
 116    end record;
 117
 118    No_File_Found : constant File_Found :=
 119                      (No_File, No_File, 0, False, No_Location);
 120
 121    package Excluded_Sources_Htable is new GNAT.Dynamic_HTables.Simple_HTable
 122      (Header_Num => Header_Num,
 123       Element    => File_Found,
 124       No_Element => No_File_Found,
 125       Key        => File_Name_Type,
 126       Hash       => Hash,
 127       Equal      => "=");
 128    --  A hash table to store the base names of excluded files, if any
 129
 130    package Object_File_Names_Htable is new GNAT.Dynamic_HTables.Simple_HTable
 131      (Header_Num => Header_Num,
 132       Element    => Source_Id,
 133       No_Element => No_Source,
 134       Key        => File_Name_Type,
 135       Hash       => Hash,
 136       Equal      => "=");
 137    --  A hash table to store the object file names for a project, to check that
 138    --  two different sources have different object file names.
 139
 140    type Project_Processing_Data is record
 141       Project         : Project_Id;
 142       Source_Names    : Source_Names_Htable.Instance;
 143       Unit_Exceptions : Unit_Exceptions_Htable.Instance;
 144       Excluded        : Excluded_Sources_Htable.Instance;
 145
 146       Source_List_File_Location : Source_Ptr;
 147       --  Location of the Source_List_File attribute, for error messages
 148    end record;
 149    --  This is similar to Tree_Processing_Data, but contains project-specific
 150    --  information which is only useful while processing the project, and can
 151    --  be discarded as soon as we have finished processing the project
 152
 153    type Tree_Processing_Data is record
 154       Tree             : Project_Tree_Ref;
 155       Node_Tree        : Prj.Tree.Project_Node_Tree_Ref;
 156       Flags            : Prj.Processing_Flags;
 157       In_Aggregate_Lib : Boolean;
 158    end record;
 159    --  Temporary data which is needed while parsing a project. It does not need
 160    --  to be kept in memory once a project has been fully loaded, but is
 161    --  necessary while performing consistency checks (duplicate sources,...)
 162    --  This data must be initialized before processing any project, and the
 163    --  same data is used for processing all projects in the tree.
 164
 165    type Lib_Data is record
 166       Name : Name_Id;
 167       Proj : Project_Id;
 168    end record;
 169
 170    package Lib_Data_Table is new GNAT.Table
 171      (Table_Component_Type => Lib_Data,
 172       Table_Index_Type     => Natural,
 173       Table_Low_Bound      => 1,
 174       Table_Initial        => 10,
 175       Table_Increment      => 100);
 176    --  A table to record library names in order to check that two library
 177    --  projects do not have the same library names.
 178
 179    procedure Initialize
 180      (Data      : out Tree_Processing_Data;
 181       Tree      : Project_Tree_Ref;
 182       Node_Tree : Prj.Tree.Project_Node_Tree_Ref;
 183       Flags     : Prj.Processing_Flags);
 184    --  Initialize Data
 185
 186    procedure Free (Data : in out Tree_Processing_Data);
 187    --  Free the memory occupied by Data
 188
 189    procedure Initialize
 190      (Data    : in out Project_Processing_Data;
 191       Project : Project_Id);
 192    procedure Free (Data : in out Project_Processing_Data);
 193    --  Initialize or free memory for a project-specific data
 194
 195    procedure Find_Excluded_Sources
 196      (Project : in out Project_Processing_Data;
 197       Data    : in out Tree_Processing_Data);
 198    --  Find the list of files that should not be considered as source files
 199    --  for this project. Sets the list in the Project.Excluded_Sources_Htable.
 200
 201    procedure Override_Kind (Source : Source_Id; Kind : Source_Kind);
 202    --  Override the reference kind for a source file. This properly updates
 203    --  the unit data if necessary.
 204
 205    procedure Load_Naming_Exceptions
 206      (Project : in out Project_Processing_Data;
 207       Data    : in out Tree_Processing_Data);
 208    --  All source files in Data.First_Source are considered as naming
 209    --  exceptions, and copied into the Source_Names and Unit_Exceptions tables
 210    --  as appropriate.
 211
 212    type Search_Type is (Search_Files, Search_Directories);
 213
 214    generic
 215       with procedure Callback
 216         (Path          : Path_Information;
 217          Pattern_Index : Natural);
 218    procedure Expand_Subdirectory_Pattern
 219      (Project       : Project_Id;
 220       Data          : in out Tree_Processing_Data;
 221       Patterns      : String_List_Id;
 222       Ignore        : String_List_Id;
 223       Search_For    : Search_Type;
 224       Resolve_Links : Boolean);
 225    --  Search the subdirectories of Project's directory for files or
 226    --  directories that match the globbing patterns found in Patterns (for
 227    --  instance "**/*.adb"). Typically, Patterns will be the value of the
 228    --  Source_Dirs or Excluded_Source_Dirs attributes.
 229    --
 230    --  Every time such a file or directory is found, the callback is called.
 231    --  Resolve_Links indicates whether we should resolve links while
 232    --  normalizing names.
 233    --
 234    --  In the callback, Pattern_Index is the index within Patterns where the
 235    --  expanded pattern was found (1 for the first element of Patterns and
 236    --  all its matching directories, then 2,...).
 237    --
 238    --  We use a generic and not an access-to-subprogram because in some cases
 239    --  this code is compiled with the restriction No_Implicit_Dynamic_Code.
 240    --  An error message is raised if a pattern does not match any file.
 241
 242    procedure Add_Source
 243      (Id                  : out Source_Id;
 244       Data                : in out Tree_Processing_Data;
 245       Project             : Project_Id;
 246       Source_Dir_Rank     : Natural;
 247       Lang_Id             : Language_Ptr;
 248       Kind                : Source_Kind;
 249       File_Name           : File_Name_Type;
 250       Display_File        : File_Name_Type;
 251       Naming_Exception    : Naming_Exception_Type := No;
 252       Path                : Path_Information      := No_Path_Information;
 253       Alternate_Languages : Language_List         := null;
 254       Unit                : Name_Id               := No_Name;
 255       Index               : Int                   := 0;
 256       Locally_Removed     : Boolean               := False;
 257       Location            : Source_Ptr            := No_Location);
 258    --  Add a new source to the different lists: list of all sources in the
 259    --  project tree, list of source of a project and list of sources of a
 260    --  language. If Path is specified, the file is also added to
 261    --  Source_Paths_HT. Location is used for error messages
 262
 263    function Canonical_Case_File_Name (Name : Name_Id) return File_Name_Type;
 264    --  Same as Osint.Canonical_Case_File_Name but applies to Name_Id.
 265    --  This alters Name_Buffer.
 266
 267    function Suffix_Matches
 268      (Filename : String;
 269       Suffix   : File_Name_Type) return Boolean;
 270    --  True if the file name ends with the given suffix. Always returns False
 271    --  if Suffix is No_Name.
 272
 273    procedure Replace_Into_Name_Buffer
 274      (Str         : String;
 275       Pattern     : String;
 276       Replacement : Character);
 277    --  Copy Str into Name_Buffer, replacing Pattern with Replacement. Str is
 278    --  converted to lower-case at the same time.
 279
 280    procedure Check_Abstract_Project
 281      (Project : Project_Id;
 282       Data    : in out Tree_Processing_Data);
 283    --  Check abstract projects attributes
 284
 285    procedure Check_Configuration
 286      (Project : Project_Id;
 287       Data    : in out Tree_Processing_Data);
 288    --  Check the configuration attributes for the project
 289
 290    procedure Check_If_Externally_Built
 291      (Project : Project_Id;
 292       Data    : in out Tree_Processing_Data);
 293    --  Check attribute Externally_Built of project Project in project tree
 294    --  Data.Tree and modify its data Data if it has the value "true".
 295
 296    procedure Check_Interfaces
 297      (Project : Project_Id;
 298       Data    : in out Tree_Processing_Data);
 299    --  If a list of sources is specified in attribute Interfaces, set
 300    --  In_Interfaces only for the sources specified in the list.
 301
 302    procedure Check_Library_Attributes
 303      (Project : Project_Id;
 304       Data    : in out Tree_Processing_Data);
 305    --  Check the library attributes of project Project in project tree
 306    --  and modify its data Data accordingly.
 307
 308    procedure Check_Package_Naming
 309      (Project : Project_Id;
 310       Data    : in out Tree_Processing_Data);
 311    --  Check the naming scheme part of Data, and initialize the naming scheme
 312    --  data in the config of the various languages.
 313
 314    procedure Check_Programming_Languages
 315      (Project : Project_Id;
 316       Data    : in out Tree_Processing_Data);
 317    --  Check attribute Languages for the project with data Data in project
 318    --  tree Data.Tree and set the components of Data for all the programming
 319    --  languages indicated in attribute Languages, if any.
 320
 321    procedure Check_Stand_Alone_Library
 322      (Project : Project_Id;
 323       Data    : in out Tree_Processing_Data);
 324    --  Check if project Project in project tree Data.Tree is a Stand-Alone
 325    --  Library project, and modify its data Data accordingly if it is one.
 326
 327    procedure Check_Unit_Name (Name : String; Unit : out Name_Id);
 328    --  Check that a name is a valid unit name
 329
 330    function Compute_Directory_Last (Dir : String) return Natural;
 331    --  Return the index of the last significant character in Dir. This is used
 332    --  to avoid duplicate '/' (slash) characters at the end of directory names.
 333
 334    procedure Search_Directories
 335      (Project         : in out Project_Processing_Data;
 336       Data            : in out Tree_Processing_Data;
 337       For_All_Sources : Boolean);
 338    --  Search the source directories to find the sources. If For_All_Sources is
 339    --  True, check each regular file name against the naming schemes of the
 340    --  various languages. Otherwise consider only the file names in hash table
 341    --  Source_Names. If Allow_Duplicate_Basenames then files with identical
 342    --  base names are permitted within a project for source-based languages
 343    --  (never for unit based languages).
 344
 345    procedure Check_File
 346      (Project           : in out Project_Processing_Data;
 347       Data              : in out Tree_Processing_Data;
 348       Source_Dir_Rank   : Natural;
 349       Path              : Path_Name_Type;
 350       Display_Path      : Path_Name_Type;
 351       File_Name         : File_Name_Type;
 352       Display_File_Name : File_Name_Type;
 353       Locally_Removed   : Boolean;
 354       For_All_Sources   : Boolean);
 355    --  Check if file File_Name is a valid source of the project. This is used
 356    --  in multi-language mode only. When the file matches one of the naming
 357    --  schemes, it is added to various htables through Add_Source and to
 358    --  Source_Paths_Htable.
 359    --
 360    --  File_Name is the same as Display_File_Name, but has been normalized.
 361    --  They do not include the directory information.
 362    --
 363    --  Path and Display_Path on the other hand are the full path to the file.
 364    --  Path must have been normalized (canonical casing and possibly links
 365    --  resolved).
 366    --
 367    --  Source_Directory is the directory in which the file was found. It is
 368    --  neither normalized nor has had links resolved, and must not end with a
 369    --  a directory separator, to avoid duplicates later on.
 370    --
 371    --  If For_All_Sources is True, then all possible file names are analyzed
 372    --  otherwise only those currently set in the Source_Names hash table.
 373
 374    procedure Check_File_Naming_Schemes
 375      (Project               : Project_Processing_Data;
 376       File_Name             : File_Name_Type;
 377       Alternate_Languages   : out Language_List;
 378       Language              : out Language_Ptr;
 379       Display_Language_Name : out Name_Id;
 380       Unit                  : out Name_Id;
 381       Lang_Kind             : out Language_Kind;
 382       Kind                  : out Source_Kind);
 383    --  Check if the file name File_Name conforms to one of the naming schemes
 384    --  of the project. If the file does not match one of the naming schemes,
 385    --  set Language to No_Language_Index. Filename is the name of the file
 386    --  being investigated. It has been normalized (case-folded). File_Name is
 387    --  the same value.
 388
 389    procedure Get_Directories
 390      (Project : Project_Id;
 391       Data    : in out Tree_Processing_Data);
 392    --  Get the object directory, the exec directory and the source directories
 393    --  of a project.
 394
 395    procedure Get_Mains
 396      (Project : Project_Id;
 397       Data    : in out Tree_Processing_Data);
 398    --  Get the mains of a project from attribute Main, if it exists, and put
 399    --  them in the project data.
 400
 401    procedure Get_Sources_From_File
 402      (Path     : String;
 403       Location : Source_Ptr;
 404       Project  : in out Project_Processing_Data;
 405       Data     : in out Tree_Processing_Data);
 406    --  Get the list of sources from a text file and put them in hash table
 407    --  Source_Names.
 408
 409    procedure Find_Sources
 410      (Project : in out Project_Processing_Data;
 411       Data    : in out Tree_Processing_Data);
 412    --  Process the Source_Files and Source_List_File attributes, and store the
 413    --  list of source files into the Source_Names htable. When these attributes
 414    --  are not defined, find all files matching the naming schemes in the
 415    --  source directories. If Allow_Duplicate_Basenames, then files with the
 416    --  same base names are authorized within a project for source-based
 417    --  languages (never for unit based languages)
 418
 419    procedure Compute_Unit_Name
 420      (File_Name : File_Name_Type;
 421       Naming    : Lang_Naming_Data;
 422       Kind      : out Source_Kind;
 423       Unit      : out Name_Id;
 424       Project   : Project_Processing_Data);
 425    --  Check whether the file matches the naming scheme. If it does,
 426    --  compute its unit name. If Unit is set to No_Name on exit, none of the
 427    --  other out parameters are relevant.
 428
 429    procedure Check_Illegal_Suffix
 430      (Project         : Project_Id;
 431       Suffix          : File_Name_Type;
 432       Dot_Replacement : File_Name_Type;
 433       Attribute_Name  : String;
 434       Location        : Source_Ptr;
 435       Data            : in out Tree_Processing_Data);
 436    --  Display an error message if the given suffix is illegal for some reason.
 437    --  The name of the attribute we are testing is specified in Attribute_Name,
 438    --  which is used in the error message. Location is the location where the
 439    --  suffix is defined.
 440
 441    procedure Locate_Directory
 442      (Project          : Project_Id;
 443       Name             : File_Name_Type;
 444       Path             : out Path_Information;
 445       Dir_Exists       : out Boolean;
 446       Data             : in out Tree_Processing_Data;
 447       Create           : String := "";
 448       Location         : Source_Ptr := No_Location;
 449       Must_Exist       : Boolean := True;
 450       Externally_Built : Boolean := False);
 451    --  Locate a directory. Name is the directory name. Relative paths are
 452    --  resolved relative to the project's directory. If the directory does not
 453    --  exist and Setup_Projects is True and Create is a non null string, an
 454    --  attempt is made to create the directory. If the directory does not
 455    --  exist, it is either created if Setup_Projects is False (and then
 456    --  returned), or simply returned without checking for its existence (if
 457    --  Must_Exist is False) or No_Path_Information is returned. In all cases,
 458    --  Dir_Exists indicates whether the directory now exists. Create is also
 459    --  used for debugging traces to show which path we are computing.
 460
 461    procedure Look_For_Sources
 462      (Project : in out Project_Processing_Data;
 463       Data    : in out Tree_Processing_Data);
 464    --  Find all the sources of project Project in project tree Data.Tree and
 465    --  update its Data accordingly. This assumes that the special naming
 466    --  exceptions have already been processed.
 467
 468    function Path_Name_Of
 469      (File_Name : File_Name_Type;
 470       Directory : Path_Name_Type) return String;
 471    --  Returns the path name of a (non project) file. Returns an empty string
 472    --  if file cannot be found.
 473
 474    procedure Remove_Source
 475      (Tree        : Project_Tree_Ref;
 476       Id          : Source_Id;
 477       Replaced_By : Source_Id);
 478    --  Remove a file from the list of sources of a project. This might be
 479    --  because the file is replaced by another one in an extending project,
 480    --  or because a file was added as a naming exception but was not found
 481    --  in the end.
 482
 483    procedure Report_No_Sources
 484      (Project      : Project_Id;
 485       Lang_Name    : String;
 486       Data         : Tree_Processing_Data;
 487       Location     : Source_Ptr;
 488       Continuation : Boolean := False);
 489    --  Report an error or a warning depending on the value of When_No_Sources
 490    --  when there are no sources for language Lang_Name.
 491
 492    procedure Show_Source_Dirs
 493      (Project : Project_Id;
 494       Shared  : Shared_Project_Tree_Data_Access);
 495    --  List all the source directories of a project
 496
 497    procedure Write_Attr (Name, Value : String);
 498    --  Debug print a value for a specific property. Does nothing when not in
 499    --  debug mode
 500
 501    procedure Error_Or_Warning
 502      (Flags    : Processing_Flags;
 503       Kind     : Error_Warning;
 504       Msg      : String;
 505       Location : Source_Ptr;
 506       Project  : Project_Id);
 507    --  Emits either an error or warning message (or nothing), depending on Kind
 508
 509    function No_Space_Img (N : Natural) return String;
 510    --  Image of a Natural without the initial space
 511
 512    ----------------------
 513    -- Error_Or_Warning --
 514    ----------------------
 515
 516    procedure Error_Or_Warning
 517      (Flags    : Processing_Flags;
 518       Kind     : Error_Warning;
 519       Msg      : String;
 520       Location : Source_Ptr;
 521       Project  : Project_Id) is
 522    begin
 523       case Kind is
 524          when Error   => Error_Msg (Flags, Msg, Location, Project);
 525          when Warning => Error_Msg (Flags, "?" & Msg, Location, Project);
 526          when Silent  => null;
 527       end case;
 528    end Error_Or_Warning;
 529
 530    ------------------------------
 531    -- Replace_Into_Name_Buffer --
 532    ------------------------------
 533
 534    procedure Replace_Into_Name_Buffer
 535      (Str         : String;
 536       Pattern     : String;
 537       Replacement : Character)
 538    is
 539       Max : constant Integer := Str'Last - Pattern'Length + 1;
 540       J   : Positive;
 541
 542    begin
 543       Name_Len := 0;
 544
 545       J := Str'First;
 546       while J <= Str'Last loop
 547          Name_Len := Name_Len + 1;
 548
 549          if J <= Max
 550            and then Str (J .. J + Pattern'Length - 1) = Pattern
 551          then
 552             Name_Buffer (Name_Len) := Replacement;
 553             J := J + Pattern'Length;
 554
 555          else
 556             Name_Buffer (Name_Len) := GNAT.Case_Util.To_Lower (Str (J));
 557             J := J + 1;
 558          end if;
 559       end loop;
 560    end Replace_Into_Name_Buffer;
 561
 562    --------------------
 563    -- Suffix_Matches --
 564    --------------------
 565
 566    function Suffix_Matches
 567      (Filename : String;
 568       Suffix   : File_Name_Type) return Boolean
 569    is
 570       Min_Prefix_Length : Natural := 0;
 571
 572    begin
 573       if Suffix = No_File or else Suffix = Empty_File then
 574          return False;
 575       end if;
 576
 577       declare
 578          Suf : String := Get_Name_String (Suffix);
 579
 580       begin
 581          --  On non case-sensitive systems, use proper suffix casing
 582
 583          Canonical_Case_File_Name (Suf);
 584
 585          --  The file name must end with the suffix (which is not an extension)
 586          --  For instance a suffix "configure.in" must match a file with the
 587          --  same name. To avoid dummy cases, though, a suffix starting with
 588          --  '.' requires a file that is at least one character longer ('.cpp'
 589          --  should not match a file with the same name).
 590
 591          if Suf (Suf'First) = '.' then
 592             Min_Prefix_Length := 1;
 593          end if;
 594
 595          return Filename'Length >= Suf'Length + Min_Prefix_Length
 596            and then
 597              Filename (Filename'Last - Suf'Length + 1 .. Filename'Last) = Suf;
 598       end;
 599    end Suffix_Matches;
 600
 601    ----------------
 602    -- Write_Attr --
 603    ----------------
 604
 605    procedure Write_Attr (Name, Value : String) is
 606    begin
 607       if Current_Verbosity = High then
 608          Debug_Output (Name & " = """ & Value & '"');
 609       end if;
 610    end Write_Attr;
 611
 612    ----------------
 613    -- Add_Source --
 614    ----------------
 615
 616    procedure Add_Source
 617      (Id                  : out Source_Id;
 618       Data                : in out Tree_Processing_Data;
 619       Project             : Project_Id;
 620       Source_Dir_Rank     : Natural;
 621       Lang_Id             : Language_Ptr;
 622       Kind                : Source_Kind;
 623       File_Name           : File_Name_Type;
 624       Display_File        : File_Name_Type;
 625       Naming_Exception    : Naming_Exception_Type := No;
 626       Path                : Path_Information      := No_Path_Information;
 627       Alternate_Languages : Language_List         := null;
 628       Unit                : Name_Id               := No_Name;
 629       Index               : Int                   := 0;
 630       Locally_Removed     : Boolean               := False;
 631       Location            : Source_Ptr            := No_Location)
 632    is
 633       Config            : constant Language_Config := Lang_Id.Config;
 634       UData             : Unit_Index;
 635       Add_Src           : Boolean;
 636       Source            : Source_Id;
 637       Prev_Unit         : Unit_Index := No_Unit_Index;
 638       Source_To_Replace : Source_Id := No_Source;
 639
 640    begin
 641       --  Check if the same file name or unit is used in the prj tree
 642
 643       Add_Src := True;
 644
 645       if Unit /= No_Name then
 646          Prev_Unit := Units_Htable.Get (Data.Tree.Units_HT, Unit);
 647       end if;
 648
 649       if Prev_Unit /= No_Unit_Index
 650         and then (Kind = Impl or else Kind = Spec)
 651         and then Prev_Unit.File_Names (Kind) /= null
 652       then
 653          --  Suspicious, we need to check later whether this is authorized
 654
 655          Add_Src := False;
 656          Source := Prev_Unit.File_Names (Kind);
 657
 658       else
 659          Source := Source_Files_Htable.Get
 660            (Data.Tree.Source_Files_HT, File_Name);
 661
 662          if Source /= No_Source and then Source.Index = Index then
 663             Add_Src := False;
 664          end if;
 665       end if;
 666
 667       --  Duplication of file/unit in same project is allowed if order of
 668       --  source directories is known, or if there is no compiler for the
 669       --  language.
 670
 671       if Add_Src = False then
 672          Add_Src := True;
 673
 674          if Project = Source.Project then
 675             if Prev_Unit = No_Unit_Index then
 676                if Data.Flags.Allow_Duplicate_Basenames then
 677                   Add_Src := True;
 678
 679                elsif Lang_Id.Config.Compiler_Driver = Empty_File then
 680                   Add_Src := True;
 681
 682                elsif Source_Dir_Rank /= Source.Source_Dir_Rank then
 683                   Add_Src := False;
 684
 685                else
 686                   Error_Msg_File_1 := File_Name;
 687                   Error_Msg
 688                     (Data.Flags, "duplicate source file name {",
 689                      Location, Project);
 690                   Add_Src := False;
 691                end if;
 692
 693             else
 694                if Source_Dir_Rank /= Source.Source_Dir_Rank then
 695                   Add_Src := False;
 696
 697                --  We might be seeing the same file through a different path
 698                --  (for instance because of symbolic links).
 699
 700                elsif Source.Path.Name /= Path.Name then
 701                   if not Source.Duplicate_Unit then
 702                      Error_Msg_Name_1 := Unit;
 703                      Error_Msg
 704                        (Data.Flags, "\duplicate unit %%", Location, Project);
 705                      Source.Duplicate_Unit := True;
 706                   end if;
 707
 708                   Add_Src := False;
 709                end if;
 710             end if;
 711
 712             --  Do not allow the same unit name in different projects, except
 713             --  if one is extending the other.
 714
 715             --  For a file based language, the same file name replaces a file
 716             --  in a project being extended, but it is allowed to have the same
 717             --  file name in unrelated projects.
 718
 719          elsif Is_Extending (Project, Source.Project) then
 720             if not Locally_Removed and then Naming_Exception /= Inherited then
 721                Source_To_Replace := Source;
 722             end if;
 723
 724          elsif Prev_Unit /= No_Unit_Index
 725            and then Prev_Unit.File_Names (Kind) /= null
 726            and then not Source.Locally_Removed
 727            and then not Data.In_Aggregate_Lib
 728          then
 729             --  Path is set if this is a source we found on the disk, in which
 730             --  case we can provide more explicit error message. Path is unset
 731             --  when the source is added from one of the naming exceptions in
 732             --  the project.
 733
 734             if Path /= No_Path_Information then
 735                Error_Msg_Name_1 := Unit;
 736                Error_Msg
 737                  (Data.Flags,
 738                   "unit %% cannot belong to several projects",
 739                   Location, Project);
 740
 741                Error_Msg_Name_1 := Project.Name;
 742                Error_Msg_Name_2 := Name_Id (Path.Display_Name);
 743                Error_Msg
 744                  (Data.Flags, "\  project %%, %%", Location, Project);
 745
 746                Error_Msg_Name_1 := Source.Project.Name;
 747                Error_Msg_Name_2 := Name_Id (Source.Path.Display_Name);
 748                Error_Msg
 749                  (Data.Flags, "\  project %%, %%", Location, Project);
 750
 751             else
 752                Error_Msg_Name_1 := Unit;
 753                Error_Msg_Name_2 := Source.Project.Name;
 754                Error_Msg
 755                  (Data.Flags, "unit %% already belongs to project %%",
 756                   Location, Project);
 757             end if;
 758
 759             Add_Src := False;
 760
 761          elsif not Source.Locally_Removed
 762            and then not Data.Flags.Allow_Duplicate_Basenames
 763            and then Lang_Id.Config.Kind = Unit_Based
 764            and then Source.Language.Config.Kind = Unit_Based
 765            and then not Data.In_Aggregate_Lib
 766          then
 767             Error_Msg_File_1 := File_Name;
 768             Error_Msg_File_2 := File_Name_Type (Source.Project.Name);
 769             Error_Msg
 770               (Data.Flags,
 771                "{ is already a source of project {", Location, Project);
 772
 773             --  Add the file anyway, to avoid further warnings like "language
 774             --  unknown".
 775
 776             Add_Src := True;
 777          end if;
 778       end if;
 779
 780       if not Add_Src then
 781          return;
 782       end if;
 783
 784       --  Add the new file
 785
 786       Id := new Source_Data;
 787
 788       if Current_Verbosity = High then
 789          Debug_Indent;
 790          Write_Str ("adding source File: ");
 791          Write_Str (Get_Name_String (Display_File));
 792
 793          if Index /= 0 then
 794             Write_Str (" at" & Index'Img);
 795          end if;
 796
 797          if Lang_Id.Config.Kind = Unit_Based then
 798             Write_Str (" Unit: ");
 799
 800             --  ??? in gprclean, it seems we sometimes pass an empty Unit name
 801             --  (see test extended_projects).
 802
 803             if Unit /= No_Name then
 804                Write_Str (Get_Name_String (Unit));
 805             end if;
 806
 807             Write_Str (" Kind: ");
 808             Write_Str (Source_Kind'Image (Kind));
 809          end if;
 810
 811          Write_Eol;
 812       end if;
 813
 814       Id.Project             := Project;
 815       Id.Location            := Location;
 816       Id.Source_Dir_Rank     := Source_Dir_Rank;
 817       Id.Language            := Lang_Id;
 818       Id.Kind                := Kind;
 819       Id.Alternate_Languages := Alternate_Languages;
 820       Id.Locally_Removed     := Locally_Removed;
 821       Id.Index               := Index;
 822       Id.File                := File_Name;
 823       Id.Display_File        := Display_File;
 824       Id.Dep_Name            := Dependency_Name
 825                                   (File_Name, Lang_Id.Config.Dependency_Kind);
 826       Id.Naming_Exception    := Naming_Exception;
 827       Id.Object              := Object_Name
 828                                   (File_Name, Config.Object_File_Suffix);
 829       Id.Switches            := Switches_Name (File_Name);
 830
 831       --  Add the source id to the Unit_Sources_HT hash table, if the unit name
 832       --  is not null.
 833
 834       if Unit /= No_Name then
 835
 836          --  Note: we might be creating a dummy unit here, when we in fact have
 837          --  a separate. For instance, file file-bar.adb will initially be
 838          --  assumed to be the IMPL of unit "file.bar". Only later on (in
 839          --  Check_Object_Files) will we parse those units that only have an
 840          --  impl and no spec to make sure whether we have a Separate in fact
 841          --  (that significantly reduces the number of times we need to parse
 842          --  the files, since we are then only interested in those with no
 843          --  spec). We still need those dummy units in the table, since that's
 844          --  the name we find in the ALI file
 845
 846          UData := Units_Htable.Get (Data.Tree.Units_HT, Unit);
 847
 848          if UData = No_Unit_Index then
 849             UData := new Unit_Data;
 850             UData.Name := Unit;
 851
 852             if Naming_Exception /= Inherited then
 853                Units_Htable.Set (Data.Tree.Units_HT, Unit, UData);
 854             end if;
 855          end if;
 856
 857          Id.Unit := UData;
 858
 859          --  Note that this updates Unit information as well
 860
 861          if Naming_Exception /= Inherited then
 862             Override_Kind (Id, Kind);
 863          end if;
 864       end if;
 865
 866       if Path /= No_Path_Information then
 867          Id.Path := Path;
 868          Source_Paths_Htable.Set (Data.Tree.Source_Paths_HT, Path.Name, Id);
 869       end if;
 870
 871       Id.Next_With_File_Name :=
 872         Source_Files_Htable.Get (Data.Tree.Source_Files_HT, File_Name);
 873       Source_Files_Htable.Set (Data.Tree.Source_Files_HT, File_Name, Id);
 874
 875       if Index /= 0 then
 876          Project.Has_Multi_Unit_Sources := True;
 877       end if;
 878
 879       --  Add the source to the language list
 880
 881       Id.Next_In_Lang := Lang_Id.First_Source;
 882       Lang_Id.First_Source := Id;
 883
 884       if Source_To_Replace /= No_Source then
 885          Remove_Source (Data.Tree, Source_To_Replace, Id);
 886       end if;
 887
 888       if Data.Tree.Replaced_Source_Number > 0
 889         and then
 890           Replaced_Source_HTable.Get
 891             (Data.Tree.Replaced_Sources, Id.File) /= No_File
 892       then
 893          Replaced_Source_HTable.Remove (Data.Tree.Replaced_Sources, Id.File);
 894          Data.Tree.Replaced_Source_Number :=
 895            Data.Tree.Replaced_Source_Number - 1;
 896       end if;
 897    end Add_Source;
 898
 899    ------------------------------
 900    -- Canonical_Case_File_Name --
 901    ------------------------------
 902
 903    function Canonical_Case_File_Name (Name : Name_Id) return File_Name_Type is
 904    begin
 905       if Osint.File_Names_Case_Sensitive then
 906          return File_Name_Type (Name);
 907       else
 908          Get_Name_String (Name);
 909          Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
 910          return Name_Find;
 911       end if;
 912    end Canonical_Case_File_Name;
 913
 914    ---------------------------------
 915    -- Process_Aggregated_Projects --
 916    ---------------------------------
 917
 918    procedure Process_Aggregated_Projects
 919      (Tree      : Project_Tree_Ref;
 920       Project   : Project_Id;
 921       Node_Tree : Prj.Tree.Project_Node_Tree_Ref;
 922       Flags     : Processing_Flags)
 923    is
 924       Data : Tree_Processing_Data :=
 925                (Tree             => Tree,
 926                 Node_Tree        => Node_Tree,
 927                 Flags            => Flags,
 928                 In_Aggregate_Lib => False);
 929
 930       Project_Files : constant Prj.Variable_Value :=
 931                         Prj.Util.Value_Of
 932                           (Snames.Name_Project_Files,
 933                            Project.Decl.Attributes,
 934                            Tree.Shared);
 935
 936       Project_Path_For_Aggregate : Prj.Env.Project_Search_Path;
 937
 938       procedure Found_Project_File (Path : Path_Information; Rank : Natural);
 939       --  Called for each project file aggregated by Project
 940
 941       procedure Expand_Project_Files is
 942         new Expand_Subdirectory_Pattern (Callback => Found_Project_File);
 943       --  Search for all project files referenced by the patterns given in
 944       --  parameter. Calls Found_Project_File for each of them.
 945
 946       ------------------------
 947       -- Found_Project_File --
 948       ------------------------
 949
 950       procedure Found_Project_File (Path : Path_Information; Rank : Natural) is
 951          pragma Unreferenced (Rank);
 952
 953       begin
 954          if Path.Name /= Project.Path.Name then
 955             Debug_Output ("aggregates: ", Name_Id (Path.Display_Name));
 956
 957             --  For usual "with" statement, this phase will have been done when
 958             --  parsing the project itself. However, for aggregate projects, we
 959             --  can only do this when processing the aggregate project, since
 960             --  the exact list of project files or project directories can
 961             --  depend on scenario variables.
 962             --
 963             --  We only load the projects explicitly here, but do not process
 964             --  them. For the processing, Prj.Proc will take care of processing
 965             --  them, within the same call to Recursive_Process (thus avoiding
 966             --  the processing of a given project multiple times).
 967             --
 968             --  ??? We might already have loaded the project
 969
 970             Add_Aggregated_Project (Project, Path => Path.Name);
 971
 972          else
 973             Debug_Output ("pattern returned the aggregate itself, ignored");
 974          end if;
 975       end Found_Project_File;
 976
 977    --  Start of processing for Check_Aggregate_Project
 978
 979    begin
 980       pragma Assert (Project.Qualifier in Aggregate_Project);
 981
 982       if Project_Files.Default then
 983          Error_Msg_Name_1 := Snames.Name_Project_Files;
 984          Error_Msg
 985            (Flags,
 986             "Attribute %% must be specified in aggregate project",
 987             Project.Location, Project);
 988          return;
 989       end if;
 990
 991       --  The aggregated projects are only searched relative to the directory
 992       --  of the aggregate project, not in the default project path.
 993
 994       Initialize_Empty (Project_Path_For_Aggregate);
 995
 996       Free (Project.Aggregated_Projects);
 997
 998       --  Look for aggregated projects. For similarity with source files and
 999       --  dirs, the aggregated project files are not searched for on the
1000       --  project path, and are only found through the path specified in
1001       --  the Project_Files attribute.
1002
1003       Expand_Project_Files
1004         (Project       => Project,
1005          Data          => Data,
1006          Patterns      => Project_Files.Values,
1007          Ignore        => Nil_String,
1008          Search_For    => Search_Files,
1009          Resolve_Links => Opt.Follow_Links_For_Files);
1010
1011       Free (Project_Path_For_Aggregate);
1012    end Process_Aggregated_Projects;
1013
1014    ----------------------------
1015    -- Check_Abstract_Project --
1016    ----------------------------
1017
1018    procedure Check_Abstract_Project
1019      (Project : Project_Id;
1020       Data    : in out Tree_Processing_Data)
1021    is
1022       Shared : constant Shared_Project_Tree_Data_Access := Data.Tree.Shared;
1023
1024       Source_Dirs      : constant Variable_Value :=
1025                            Util.Value_Of
1026                              (Name_Source_Dirs,
1027                               Project.Decl.Attributes, Shared);
1028       Source_Files     : constant Variable_Value :=
1029                            Util.Value_Of
1030                              (Name_Source_Files,
1031                               Project.Decl.Attributes, Shared);
1032       Source_List_File : constant Variable_Value :=
1033                            Util.Value_Of
1034                              (Name_Source_List_File,
1035                               Project.Decl.Attributes, Shared);
1036       Languages        : constant Variable_Value :=
1037                            Util.Value_Of
1038                              (Name_Languages,
1039                               Project.Decl.Attributes, Shared);
1040
1041    begin
1042       if Project.Source_Dirs /= Nil_String then
1043          if Source_Dirs.Values  = Nil_String
1044            and then Source_Files.Values = Nil_String
1045            and then Languages.Values = Nil_String
1046            and then Source_List_File.Default
1047          then
1048             Project.Source_Dirs := Nil_String;
1049
1050          else
1051             Error_Msg
1052               (Data.Flags,
1053                "at least one of Source_Files, Source_Dirs or Languages "
1054                & "must be declared empty for an abstract project",
1055                Project.Location, Project);
1056          end if;
1057       end if;
1058    end Check_Abstract_Project;
1059
1060    -------------------------
1061    -- Check_Configuration --
1062    -------------------------
1063
1064    procedure Check_Configuration
1065      (Project : Project_Id;
1066       Data    : in out Tree_Processing_Data)
1067    is
1068       Shared          : constant Shared_Project_Tree_Data_Access :=
1069                           Data.Tree.Shared;
1070
1071       Dot_Replacement : File_Name_Type := No_File;
1072       Casing          : Casing_Type    := All_Lower_Case;
1073       Separate_Suffix : File_Name_Type := No_File;
1074
1075       Lang_Index : Language_Ptr := No_Language_Index;
1076       --  The index of the language data being checked
1077
1078       Prev_Index : Language_Ptr := No_Language_Index;
1079       --  The index of the previous language
1080
1081       procedure Process_Project_Level_Simple_Attributes;
1082       --  Process the simple attributes at the project level
1083
1084       procedure Process_Project_Level_Array_Attributes;
1085       --  Process the associate array attributes at the project level
1086
1087       procedure Process_Packages;
1088       --  Read the packages of the project
1089
1090       ----------------------
1091       -- Process_Packages --
1092       ----------------------
1093
1094       procedure Process_Packages is
1095          Packages : Package_Id;
1096          Element  : Package_Element;
1097
1098          procedure Process_Binder (Arrays : Array_Id);
1099          --  Process the associate array attributes of package Binder
1100
1101          procedure Process_Builder (Attributes : Variable_Id);
1102          --  Process the simple attributes of package Builder
1103
1104          procedure Process_Compiler (Arrays : Array_Id);
1105          --  Process the associate array attributes of package Compiler
1106
1107          procedure Process_Naming (Attributes : Variable_Id);
1108          --  Process the simple attributes of package Naming
1109
1110          procedure Process_Naming (Arrays : Array_Id);
1111          --  Process the associate array attributes of package Naming
1112
1113          procedure Process_Linker (Attributes : Variable_Id);
1114          --  Process the simple attributes of package Linker of a
1115          --  configuration project.
1116
1117          --------------------
1118          -- Process_Binder --
1119          --------------------
1120
1121          procedure Process_Binder (Arrays : Array_Id) is
1122             Current_Array_Id : Array_Id;
1123             Current_Array    : Array_Data;
1124             Element_Id       : Array_Element_Id;
1125             Element          : Array_Element;
1126
1127          begin
1128             --  Process the associative array attribute of package Binder
1129
1130             Current_Array_Id := Arrays;
1131             while Current_Array_Id /= No_Array loop
1132                Current_Array := Shared.Arrays.Table (Current_Array_Id);
1133
1134                Element_Id := Current_Array.Value;
1135                while Element_Id /= No_Array_Element loop
1136                   Element := Shared.Array_Elements.Table (Element_Id);
1137
1138                   if Element.Index /= All_Other_Names then
1139
1140                      --  Get the name of the language
1141
1142                      Lang_Index :=
1143                        Get_Language_From_Name
1144                          (Project, Get_Name_String (Element.Index));
1145
1146                      if Lang_Index /= No_Language_Index then
1147                         case Current_Array.Name is
1148                            when Name_Driver =>
1149
1150                               --  Attribute Driver (<language>)
1151
1152                               Lang_Index.Config.Binder_Driver :=
1153                                 File_Name_Type (Element.Value.Value);
1154
1155                            when Name_Required_Switches =>
1156                               Put
1157                                 (Into_List =>
1158                                    Lang_Index.Config.Binder_Required_Switches,
1159                                  From_List => Element.Value.Values,
1160                                  In_Tree   => Data.Tree);
1161
1162                            when Name_Prefix =>
1163
1164                               --  Attribute Prefix (<language>)
1165
1166                               Lang_Index.Config.Binder_Prefix :=
1167                                 Element.Value.Value;
1168
1169                            when Name_Objects_Path =>
1170
1171                               --  Attribute Objects_Path (<language>)
1172
1173                               Lang_Index.Config.Objects_Path :=
1174                                 Element.Value.Value;
1175
1176                            when Name_Objects_Path_File =>
1177
1178                               --  Attribute Objects_Path (<language>)
1179
1180                               Lang_Index.Config.Objects_Path_File :=
1181                                 Element.Value.Value;
1182
1183                            when others =>
1184                               null;
1185                         end case;
1186                      end if;
1187                   end if;
1188
1189                   Element_Id := Element.Next;
1190                end loop;
1191
1192                Current_Array_Id := Current_Array.Next;
1193             end loop;
1194          end Process_Binder;
1195
1196          ---------------------
1197          -- Process_Builder --
1198          ---------------------
1199
1200          procedure Process_Builder (Attributes : Variable_Id) is
1201             Attribute_Id : Variable_Id;
1202             Attribute    : Variable;
1203
1204          begin
1205             --  Process non associated array attribute from package Builder
1206
1207             Attribute_Id := Attributes;
1208             while Attribute_Id /= No_Variable loop
1209                Attribute := Shared.Variable_Elements.Table (Attribute_Id);
1210
1211                if not Attribute.Value.Default then
1212                   if Attribute.Name = Name_Executable_Suffix then
1213
1214                      --  Attribute Executable_Suffix: the suffix of the
1215                      --  executables.
1216
1217                      Project.Config.Executable_Suffix :=
1218                        Attribute.Value.Value;
1219                   end if;
1220                end if;
1221
1222                Attribute_Id := Attribute.Next;
1223             end loop;
1224          end Process_Builder;
1225
1226          ----------------------
1227          -- Process_Compiler --
1228          ----------------------
1229
1230          procedure Process_Compiler (Arrays : Array_Id) is
1231             Current_Array_Id : Array_Id;
1232             Current_Array    : Array_Data;
1233             Element_Id       : Array_Element_Id;
1234             Element          : Array_Element;
1235             List             : String_List_Id;
1236
1237          begin
1238             --  Process the associative array attribute of package Compiler
1239
1240             Current_Array_Id := Arrays;
1241             while Current_Array_Id /= No_Array loop
1242                Current_Array := Shared.Arrays.Table (Current_Array_Id);
1243
1244                Element_Id := Current_Array.Value;
1245                while Element_Id /= No_Array_Element loop
1246                   Element := Shared.Array_Elements.Table (Element_Id);
1247
1248                   if Element.Index /= All_Other_Names then
1249
1250                      --  Get the name of the language
1251
1252                      Lang_Index := Get_Language_From_Name
1253                        (Project, Get_Name_String (Element.Index));
1254
1255                      if Lang_Index /= No_Language_Index then
1256                         case Current_Array.Name is
1257
1258                         --  Attribute Dependency_Kind (<language>)
1259
1260                         when Name_Dependency_Kind =>
1261                            Get_Name_String (Element.Value.Value);
1262
1263                            begin
1264                               Lang_Index.Config.Dependency_Kind :=
1265                                 Dependency_File_Kind'Value
1266                                   (Name_Buffer (1 .. Name_Len));
1267
1268                            exception
1269                               when Constraint_Error =>
1270                                  Error_Msg
1271                                    (Data.Flags,
1272                                     "illegal value for Dependency_Kind",
1273                                     Element.Value.Location,
1274                                     Project);
1275                            end;
1276
1277                         --  Attribute Dependency_Switches (<language>)
1278
1279                         when Name_Dependency_Switches =>
1280                            if Lang_Index.Config.Dependency_Kind = None then
1281                               Lang_Index.Config.Dependency_Kind := Makefile;
1282                            end if;
1283
1284                            List := Element.Value.Values;
1285
1286                            if List /= Nil_String then
1287                               Put (Into_List =>
1288                                      Lang_Index.Config.Dependency_Option,
1289                                    From_List => List,
1290                                    In_Tree   => Data.Tree);
1291                            end if;
1292
1293                         --  Attribute Dependency_Driver (<language>)
1294
1295                         when Name_Dependency_Driver =>
1296                            if Lang_Index.Config.Dependency_Kind = None then
1297                               Lang_Index.Config.Dependency_Kind := Makefile;
1298                            end if;
1299
1300                            List := Element.Value.Values;
1301
1302                            if List /= Nil_String then
1303                               Put (Into_List =>
1304                                      Lang_Index.Config.Compute_Dependency,
1305                                    From_List => List,
1306                                    In_Tree   => Data.Tree);
1307                            end if;
1308
1309                         --  Attribute Language_Kind (<language>)
1310
1311                         when Name_Language_Kind =>
1312                            Get_Name_String (Element.Value.Value);
1313
1314                            begin
1315                               Lang_Index.Config.Kind :=
1316                                 Language_Kind'Value
1317                                   (Name_Buffer (1 .. Name_Len));
1318
1319                            exception
1320                               when Constraint_Error =>
1321                                  Error_Msg
1322                                    (Data.Flags,
1323                                     "illegal value for Language_Kind",
1324                                     Element.Value.Location,
1325                                     Project);
1326                            end;
1327
1328                         --  Attribute Include_Switches (<language>)
1329
1330                         when Name_Include_Switches =>
1331                            List := Element.Value.Values;
1332
1333                            if List = Nil_String then
1334                               Error_Msg
1335                                 (Data.Flags, "include option cannot be null",
1336                                  Element.Value.Location, Project);
1337                            end if;
1338
1339                            Put (Into_List => Lang_Index.Config.Include_Option,
1340                                 From_List => List,
1341                                 In_Tree   => Data.Tree);
1342
1343                         --  Attribute Include_Path (<language>)
1344
1345                         when Name_Include_Path =>
1346                            Lang_Index.Config.Include_Path :=
1347                              Element.Value.Value;
1348
1349                         --  Attribute Include_Path_File (<language>)
1350
1351                         when Name_Include_Path_File =>
1352                            Lang_Index.Config.Include_Path_File :=
1353                              Element.Value.Value;
1354
1355                         --  Attribute Driver (<language>)
1356
1357                         when Name_Driver =>
1358                            Lang_Index.Config.Compiler_Driver :=
1359                              File_Name_Type (Element.Value.Value);
1360
1361                         when Name_Required_Switches
1362                            | Name_Leading_Required_Switches
1363                            =>
1364                            Put (Into_List =>
1365                                   Lang_Index.Config.
1366                                     Compiler_Leading_Required_Switches,
1367                                 From_List => Element.Value.Values,
1368                                 In_Tree   => Data.Tree);
1369
1370                         when Name_Trailing_Required_Switches =>
1371                            Put (Into_List =>
1372                                   Lang_Index.Config.
1373                                     Compiler_Trailing_Required_Switches,
1374                                 From_List => Element.Value.Values,
1375                                 In_Tree   => Data.Tree);
1376
1377                         when Name_Multi_Unit_Switches =>
1378                            Put (Into_List =>
1379                                   Lang_Index.Config.Multi_Unit_Switches,
1380                                 From_List => Element.Value.Values,
1381                                 In_Tree   => Data.Tree);
1382
1383                         when Name_Multi_Unit_Object_Separator =>
1384                            Get_Name_String (Element.Value.Value);
1385
1386                            if Name_Len /= 1 then
1387                               Error_Msg
1388                                 (Data.Flags,
1389                                  "multi-unit object separator must have " &
1390                                  "a single character",
1391                                  Element.Value.Location, Project);
1392
1393                            elsif Name_Buffer (1) = ' ' then
1394                               Error_Msg
1395                                 (Data.Flags,
1396                                  "multi-unit object separator cannot be " &
1397                                  "a space",
1398                                  Element.Value.Location, Project);
1399
1400                            else
1401                               Lang_Index.Config.Multi_Unit_Object_Separator :=
1402                                 Name_Buffer (1);
1403                            end if;
1404
1405                         when Name_Path_Syntax =>
1406                            begin
1407                               Lang_Index.Config.Path_Syntax :=
1408                                   Path_Syntax_Kind'Value
1409                                     (Get_Name_String (Element.Value.Value));
1410
1411                            exception
1412                               when Constraint_Error =>
1413                                  Error_Msg
1414                                    (Data.Flags,
1415                                     "invalid value for Path_Syntax",
1416                                     Element.Value.Location, Project);
1417                            end;
1418
1419                         when Name_Source_File_Switches =>
1420                            Put (Into_List =>
1421                                   Lang_Index.Config.Source_File_Switches,
1422                                 From_List => Element.Value.Values,
1423                                 In_Tree   => Data.Tree);
1424
1425                         when Name_Object_File_Suffix =>
1426                            if Get_Name_String (Element.Value.Value) = "" then
1427                               Error_Msg
1428                                 (Data.Flags,
1429                                  "object file suffix cannot be empty",
1430                                  Element.Value.Location, Project);
1431
1432                            else
1433                               Lang_Index.Config.Object_File_Suffix :=
1434                                 Element.Value.Value;
1435                            end if;
1436
1437                         when Name_Object_File_Switches =>
1438                            Put (Into_List =>
1439                                   Lang_Index.Config.Object_File_Switches,
1440                                 From_List => Element.Value.Values,
1441                                 In_Tree   => Data.Tree);
1442
1443                         --  Attribute Compiler_Pic_Option (<language>)
1444
1445                         when Name_Pic_Option =>
1446                            List := Element.Value.Values;
1447
1448                            if List = Nil_String then
1449                               Error_Msg
1450                                 (Data.Flags,
1451                                  "compiler PIC option cannot be null",
1452                                  Element.Value.Location, Project);
1453                            end if;
1454
1455                            Put (Into_List =>
1456                                   Lang_Index.Config.Compilation_PIC_Option,
1457                                 From_List => List,
1458                                 In_Tree   => Data.Tree);
1459
1460                         --  Attribute Mapping_File_Switches (<language>)
1461
1462                         when Name_Mapping_File_Switches =>
1463                            List := Element.Value.Values;
1464
1465                            if List = Nil_String then
1466                               Error_Msg
1467                                 (Data.Flags,
1468                                  "mapping file switches cannot be null",
1469                                  Element.Value.Location, Project);
1470                            end if;
1471
1472                            Put (Into_List =>
1473                                 Lang_Index.Config.Mapping_File_Switches,
1474                                 From_List => List,
1475                                 In_Tree   => Data.Tree);
1476
1477                         --  Attribute Mapping_Spec_Suffix (<language>)
1478
1479                         when Name_Mapping_Spec_Suffix =>
1480                            Lang_Index.Config.Mapping_Spec_Suffix :=
1481                              File_Name_Type (Element.Value.Value);
1482
1483                         --  Attribute Mapping_Body_Suffix (<language>)
1484
1485                         when Name_Mapping_Body_Suffix =>
1486                            Lang_Index.Config.Mapping_Body_Suffix :=
1487                              File_Name_Type (Element.Value.Value);
1488
1489                         --  Attribute Config_File_Switches (<language>)
1490
1491                         when Name_Config_File_Switches =>
1492                            List := Element.Value.Values;
1493
1494                            if List = Nil_String then
1495                               Error_Msg
1496                                 (Data.Flags,
1497                                  "config file switches cannot be null",
1498                                  Element.Value.Location, Project);
1499                            end if;
1500
1501                            Put (Into_List =>
1502                                   Lang_Index.Config.Config_File_Switches,
1503                                 From_List => List,
1504                                 In_Tree   => Data.Tree);
1505
1506                         --  Attribute Objects_Path (<language>)
1507
1508                         when Name_Objects_Path =>
1509                            Lang_Index.Config.Objects_Path :=
1510                              Element.Value.Value;
1511
1512                         --  Attribute Objects_Path_File (<language>)
1513
1514                         when Name_Objects_Path_File =>
1515                            Lang_Index.Config.Objects_Path_File :=
1516                              Element.Value.Value;
1517
1518                         --  Attribute Config_Body_File_Name (<language>)
1519
1520                         when Name_Config_Body_File_Name =>
1521                            Lang_Index.Config.Config_Body :=
1522                              Element.Value.Value;
1523
1524                         --  Attribute Config_Body_File_Name_Index (< Language>)
1525
1526                         when Name_Config_Body_File_Name_Index =>
1527                            Lang_Index.Config.Config_Body_Index :=
1528                              Element.Value.Value;
1529
1530                         --  Attribute Config_Body_File_Name_Pattern(<language>)
1531
1532                         when Name_Config_Body_File_Name_Pattern =>
1533                            Lang_Index.Config.Config_Body_Pattern :=
1534                              Element.Value.Value;
1535
1536                            --  Attribute Config_Spec_File_Name (<language>)
1537
1538                         when Name_Config_Spec_File_Name =>
1539                            Lang_Index.Config.Config_Spec :=
1540                              Element.Value.Value;
1541
1542                         --  Attribute Config_Spec_File_Name_Index (<language>)
1543
1544                         when Name_Config_Spec_File_Name_Index =>
1545                            Lang_Index.Config.Config_Spec_Index :=
1546                              Element.Value.Value;
1547
1548                         --  Attribute Config_Spec_File_Name_Pattern(<language>)
1549
1550                         when Name_Config_Spec_File_Name_Pattern =>
1551                            Lang_Index.Config.Config_Spec_Pattern :=
1552                              Element.Value.Value;
1553
1554                         --  Attribute Config_File_Unique (<language>)
1555
1556                         when Name_Config_File_Unique =>
1557                            begin
1558                               Lang_Index.Config.Config_File_Unique :=
1559                                 Boolean'Value
1560                                   (Get_Name_String (Element.Value.Value));
1561                            exception
1562                               when Constraint_Error =>
1563                                  Error_Msg
1564                                    (Data.Flags,
1565                                     "illegal value for Config_File_Unique",
1566                                     Element.Value.Location, Project);
1567                            end;
1568
1569                         when others =>
1570                            null;
1571                         end case;
1572                      end if;
1573                   end if;
1574
1575                   Element_Id := Element.Next;
1576                end loop;
1577
1578                Current_Array_Id := Current_Array.Next;
1579             end loop;
1580          end Process_Compiler;
1581
1582          --------------------
1583          -- Process_Naming --
1584          --------------------
1585
1586          procedure Process_Naming (Attributes : Variable_Id) is
1587             Attribute_Id : Variable_Id;
1588             Attribute    : Variable;
1589
1590          begin
1591             --  Process non associated array attribute from package Naming
1592
1593             Attribute_Id := Attributes;
1594             while Attribute_Id /= No_Variable loop
1595                Attribute := Shared.Variable_Elements.Table (Attribute_Id);
1596
1597                if not Attribute.Value.Default then
1598                   if Attribute.Name = Name_Separate_Suffix then
1599
1600                      --  Attribute Separate_Suffix
1601
1602                      Get_Name_String (Attribute.Value.Value);
1603                      Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
1604                      Separate_Suffix := Name_Find;
1605
1606                   elsif Attribute.Name = Name_Casing then
1607
1608                      --  Attribute Casing
1609
1610                      begin
1611                         Casing :=
1612                           Value (Get_Name_String (Attribute.Value.Value));
1613
1614                      exception
1615                         when Constraint_Error =>
1616                            Error_Msg
1617                              (Data.Flags,
1618                               "invalid value for Casing",
1619                               Attribute.Value.Location, Project);
1620                      end;
1621
1622                   elsif Attribute.Name = Name_Dot_Replacement then
1623
1624                      --  Attribute Dot_Replacement
1625
1626                      Dot_Replacement := File_Name_Type (Attribute.Value.Value);
1627
1628                   end if;
1629                end if;
1630
1631                Attribute_Id := Attribute.Next;
1632             end loop;
1633          end Process_Naming;
1634
1635          procedure Process_Naming (Arrays : Array_Id) is
1636             Current_Array_Id : Array_Id;
1637             Current_Array    : Array_Data;
1638             Element_Id       : Array_Element_Id;
1639             Element          : Array_Element;
1640
1641          begin
1642             --  Process the associative array attribute of package Naming
1643
1644             Current_Array_Id := Arrays;
1645             while Current_Array_Id /= No_Array loop
1646                Current_Array := Shared.Arrays.Table (Current_Array_Id);
1647
1648                Element_Id := Current_Array.Value;
1649                while Element_Id /= No_Array_Element loop
1650                   Element := Shared.Array_Elements.Table (Element_Id);
1651
1652                   --  Get the name of the language
1653
1654                   Lang_Index := Get_Language_From_Name
1655                     (Project, Get_Name_String (Element.Index));
1656
1657                   if Lang_Index /= No_Language_Index then
1658                      case Current_Array.Name is
1659                         when Name_Spec_Suffix | Name_Specification_Suffix =>
1660
1661                            --  Attribute Spec_Suffix (<language>)
1662
1663                            Get_Name_String (Element.Value.Value);
1664                            Canonical_Case_File_Name
1665                              (Name_Buffer (1 .. Name_Len));
1666                            Lang_Index.Config.Naming_Data.Spec_Suffix :=
1667                              Name_Find;
1668
1669                         when Name_Implementation_Suffix | Name_Body_Suffix =>
1670
1671                            Get_Name_String (Element.Value.Value);
1672                            Canonical_Case_File_Name
1673                              (Name_Buffer (1 .. Name_Len));
1674
1675                            --  Attribute Body_Suffix (<language>)
1676
1677                            Lang_Index.Config.Naming_Data.Body_Suffix :=
1678                              Name_Find;
1679                            Lang_Index.Config.Naming_Data.Separate_Suffix :=
1680                              Lang_Index.Config.Naming_Data.Body_Suffix;
1681
1682                         when others =>
1683                            null;
1684                      end case;
1685                   end if;
1686
1687                   Element_Id := Element.Next;
1688                end loop;
1689
1690                Current_Array_Id := Current_Array.Next;
1691             end loop;
1692          end Process_Naming;
1693
1694          --------------------
1695          -- Process_Linker --
1696          --------------------
1697
1698          procedure Process_Linker (Attributes : Variable_Id) is
1699             Attribute_Id : Variable_Id;
1700             Attribute    : Variable;
1701
1702          begin
1703             --  Process non associated array attribute from package Linker
1704
1705             Attribute_Id := Attributes;
1706             while Attribute_Id /= No_Variable loop
1707                Attribute := Shared.Variable_Elements.Table (Attribute_Id);
1708
1709                if not Attribute.Value.Default then
1710                   if Attribute.Name = Name_Driver then
1711
1712                      --  Attribute Linker'Driver: the default linker to use
1713
1714                      Project.Config.Linker :=
1715                        Path_Name_Type (Attribute.Value.Value);
1716
1717                      --  Linker'Driver is also used to link shared libraries
1718                      --  if the obsolescent attribute Library_GCC has not been
1719                      --  specified.
1720
1721                      if Project.Config.Shared_Lib_Driver = No_File then
1722                         Project.Config.Shared_Lib_Driver :=
1723                           File_Name_Type (Attribute.Value.Value);
1724                      end if;
1725
1726                   elsif Attribute.Name = Name_Required_Switches then
1727
1728                      --  Attribute Required_Switches: the minimum trailing
1729                      --  options to use when invoking the linker
1730
1731                      Put (Into_List =>
1732                             Project.Config.Trailing_Linker_Required_Switches,
1733                           From_List => Attribute.Value.Values,
1734                           In_Tree   => Data.Tree);
1735
1736                   elsif Attribute.Name = Name_Map_File_Option then
1737                      Project.Config.Map_File_Option := Attribute.Value.Value;
1738
1739                   elsif Attribute.Name = Name_Max_Command_Line_Length then
1740                      begin
1741                         Project.Config.Max_Command_Line_Length :=
1742                           Natural'Value (Get_Name_String
1743                                          (Attribute.Value.Value));
1744
1745                      exception
1746                         when Constraint_Error =>
1747                            Error_Msg
1748                              (Data.Flags,
1749                               "value must be positive or equal to 0",
1750                               Attribute.Value.Location, Project);
1751                      end;
1752
1753                   elsif Attribute.Name = Name_Response_File_Format then
1754                      declare
1755                         Name  : Name_Id;
1756
1757                      begin
1758                         Get_Name_String (Attribute.Value.Value);
1759                         To_Lower (Name_Buffer (1 .. Name_Len));
1760                         Name := Name_Find;
1761
1762                         if Name = Name_None then
1763                            Project.Config.Resp_File_Format := None;
1764
1765                         elsif Name = Name_Gnu then
1766                            Project.Config.Resp_File_Format := GNU;
1767
1768                         elsif Name = Name_Object_List then
1769                            Project.Config.Resp_File_Format := Object_List;
1770
1771                         elsif Name = Name_Option_List then
1772                            Project.Config.Resp_File_Format := Option_List;
1773
1774                         elsif Name_Buffer (1 .. Name_Len) = "gcc" then
1775                            Project.Config.Resp_File_Format := GCC;
1776
1777                         elsif Name_Buffer (1 .. Name_Len) = "gcc_gnu" then
1778                            Project.Config.Resp_File_Format := GCC_GNU;
1779
1780                         elsif
1781                           Name_Buffer (1 .. Name_Len) = "gcc_option_list"
1782                         then
1783                            Project.Config.Resp_File_Format := GCC_Option_List;
1784
1785                         elsif
1786                           Name_Buffer (1 .. Name_Len) = "gcc_object_list"
1787                         then
1788                            Project.Config.Resp_File_Format := GCC_Object_List;
1789
1790                         else
1791                            Error_Msg
1792                              (Data.Flags,
1793                               "illegal response file format",
1794                               Attribute.Value.Location, Project);
1795                         end if;
1796                      end;
1797
1798                   elsif Attribute.Name = Name_Response_File_Switches then
1799                      Put (Into_List => Project.Config.Resp_File_Options,
1800                           From_List => Attribute.Value.Values,
1801                           In_Tree   => Data.Tree);
1802                   end if;
1803                end if;
1804
1805                Attribute_Id := Attribute.Next;
1806             end loop;
1807          end Process_Linker;
1808
1809       --  Start of processing for Process_Packages
1810
1811       begin
1812          Packages := Project.Decl.Packages;
1813          while Packages /= No_Package loop
1814             Element := Shared.Packages.Table (Packages);
1815
1816             case Element.Name is
1817                when Name_Binder =>
1818
1819                   --  Process attributes of package Binder
1820
1821                   Process_Binder (Element.Decl.Arrays);
1822
1823                when Name_Builder =>
1824
1825                   --  Process attributes of package Builder
1826
1827                   Process_Builder (Element.Decl.Attributes);
1828
1829                when Name_Compiler =>
1830
1831                   --  Process attributes of package Compiler
1832
1833                   Process_Compiler (Element.Decl.Arrays);
1834
1835                when Name_Linker =>
1836
1837                   --  Process attributes of package Linker
1838
1839                   Process_Linker (Element.Decl.Attributes);
1840
1841                when Name_Naming =>
1842
1843                   --  Process attributes of package Naming
1844
1845                   Process_Naming (Element.Decl.Attributes);
1846                   Process_Naming (Element.Decl.Arrays);
1847
1848                when others =>
1849                   null;
1850             end case;
1851
1852             Packages := Element.Next;
1853          end loop;
1854       end Process_Packages;
1855
1856       ---------------------------------------------
1857       -- Process_Project_Level_Simple_Attributes --
1858       ---------------------------------------------
1859
1860       procedure Process_Project_Level_Simple_Attributes is
1861          Attribute_Id : Variable_Id;
1862          Attribute    : Variable;
1863          List         : String_List_Id;
1864
1865       begin
1866          --  Process non associated array attribute at project level
1867
1868          Attribute_Id := Project.Decl.Attributes;
1869          while Attribute_Id /= No_Variable loop
1870             Attribute := Shared.Variable_Elements.Table (Attribute_Id);
1871
1872             if not Attribute.Value.Default then
1873                if Attribute.Name = Name_Target then
1874
1875                   --  Attribute Target: the target specified
1876
1877                   Project.Config.Target := Attribute.Value.Value;
1878
1879                elsif Attribute.Name = Name_Library_Builder then
1880
1881                   --  Attribute Library_Builder: the application to invoke
1882                   --  to build libraries.
1883
1884                   Project.Config.Library_Builder :=
1885                     Path_Name_Type (Attribute.Value.Value);
1886
1887                elsif Attribute.Name = Name_Archive_Builder then
1888
1889                   --  Attribute Archive_Builder: the archive builder
1890                   --  (usually "ar") and its minimum options (usually "cr").
1891
1892                   List := Attribute.Value.Values;
1893
1894                   if List = Nil_String then
1895                      Error_Msg
1896                        (Data.Flags,
1897                         "archive builder cannot be null",
1898                         Attribute.Value.Location, Project);
1899                   end if;
1900
1901                   Put (Into_List => Project.Config.Archive_Builder,
1902                        From_List => List,
1903                        In_Tree   => Data.Tree);
1904
1905                elsif Attribute.Name = Name_Archive_Builder_Append_Option then
1906
1907                   --  Attribute Archive_Builder: the archive builder
1908                   --  (usually "ar") and its minimum options (usually "cr").
1909
1910                   List := Attribute.Value.Values;
1911
1912                   if List /= Nil_String then
1913                      Put
1914                        (Into_List =>
1915                           Project.Config.Archive_Builder_Append_Option,
1916                         From_List => List,
1917                         In_Tree   => Data.Tree);
1918                   end if;
1919
1920                elsif Attribute.Name = Name_Archive_Indexer then
1921
1922                   --  Attribute Archive_Indexer: the optional archive
1923                   --  indexer (usually "ranlib") with its minimum options
1924                   --  (usually none).
1925
1926                   List := Attribute.Value.Values;
1927
1928                   if List = Nil_String then
1929                      Error_Msg
1930                        (Data.Flags,
1931                         "archive indexer cannot be null",
1932                         Attribute.Value.Location, Project);
1933                   end if;
1934
1935                   Put (Into_List => Project.Config.Archive_Indexer,
1936                        From_List => List,
1937                        In_Tree   => Data.Tree);
1938
1939                elsif Attribute.Name = Name_Library_Partial_Linker then
1940
1941                   --  Attribute Library_Partial_Linker: the optional linker
1942                   --  driver with its minimum options, to partially link
1943                   --  archives.
1944
1945                   List := Attribute.Value.Values;
1946
1947                   if List = Nil_String then
1948                      Error_Msg
1949                        (Data.Flags,
1950                         "partial linker cannot be null",
1951                         Attribute.Value.Location, Project);
1952                   end if;
1953
1954                   Put (Into_List => Project.Config.Lib_Partial_Linker,
1955                        From_List => List,
1956                        In_Tree   => Data.Tree);
1957
1958                elsif Attribute.Name = Name_Library_GCC then
1959                   Project.Config.Shared_Lib_Driver :=
1960                     File_Name_Type (Attribute.Value.Value);
1961                   Error_Msg
1962                     (Data.Flags,
1963                      "?Library_'G'C'C is an obsolescent attribute, " &
1964                      "use Linker''Driver instead",
1965                      Attribute.Value.Location, Project);
1966
1967                elsif Attribute.Name = Name_Archive_Suffix then
1968                   Project.Config.Archive_Suffix :=
1969                     File_Name_Type (Attribute.Value.Value);
1970
1971                elsif Attribute.Name = Name_Linker_Executable_Option then
1972
1973                   --  Attribute Linker_Executable_Option: optional options
1974                   --  to specify an executable name. Defaults to "-o".
1975
1976                   List := Attribute.Value.Values;
1977
1978                   if List = Nil_String then
1979                      Error_Msg
1980                        (Data.Flags,
1981                         "linker executable option cannot be null",
1982                         Attribute.Value.Location, Project);
1983                   end if;
1984
1985                   Put (Into_List => Project.Config.Linker_Executable_Option,
1986                        From_List => List,
1987                        In_Tree   => Data.Tree);
1988
1989                elsif Attribute.Name = Name_Linker_Lib_Dir_Option then
1990
1991                   --  Attribute Linker_Lib_Dir_Option: optional options
1992                   --  to specify a library search directory. Defaults to
1993                   --  "-L".
1994
1995                   Get_Name_String (Attribute.Value.Value);
1996
1997                   if Name_Len = 0 then
1998                      Error_Msg
1999                        (Data.Flags,
2000                         "linker library directory option cannot be empty",
2001                         Attribute.Value.Location, Project);
2002                   end if;
2003
2004                   Project.Config.Linker_Lib_Dir_Option :=
2005                     Attribute.Value.Value;
2006
2007                elsif Attribute.Name = Name_Linker_Lib_Name_Option then
2008
2009                   --  Attribute Linker_Lib_Name_Option: optional options
2010                   --  to specify the name of a library to be linked in.
2011                   --  Defaults to "-l".
2012
2013                   Get_Name_String (Attribute.Value.Value);
2014
2015                   if Name_Len = 0 then
2016                      Error_Msg
2017                        (Data.Flags,
2018                         "linker library name option cannot be empty",
2019                         Attribute.Value.Location, Project);
2020                   end if;
2021
2022                   Project.Config.Linker_Lib_Name_Option :=
2023                     Attribute.Value.Value;
2024
2025                elsif Attribute.Name = Name_Run_Path_Option then
2026
2027                   --  Attribute Run_Path_Option: optional options to
2028                   --  specify a path for libraries.
2029
2030                   List := Attribute.Value.Values;
2031
2032                   if List /= Nil_String then
2033                      Put (Into_List => Project.Config.Run_Path_Option,
2034                           From_List => List,
2035                           In_Tree   => Data.Tree);
2036                   end if;
2037
2038                elsif Attribute.Name = Name_Run_Path_Origin then
2039                   Get_Name_String (Attribute.Value.Value);
2040
2041                   if Name_Len = 0 then
2042                      Error_Msg
2043                        (Data.Flags,
2044                         "run path origin cannot be empty",
2045                         Attribute.Value.Location, Project);
2046                   end if;
2047
2048                   Project.Config.Run_Path_Origin := Attribute.Value.Value;
2049
2050                elsif Attribute.Name = Name_Library_Install_Name_Option then
2051                   Project.Config.Library_Install_Name_Option :=
2052                     Attribute.Value.Value;
2053
2054                elsif Attribute.Name = Name_Separate_Run_Path_Options then
2055                   declare
2056                      pragma Unsuppress (All_Checks);
2057                   begin
2058                      Project.Config.Separate_Run_Path_Options :=
2059                        Boolean'Value (Get_Name_String (Attribute.Value.Value));
2060                   exception
2061                      when Constraint_Error =>
2062                         Error_Msg
2063                           (Data.Flags,
2064                            "invalid value """ &
2065                            Get_Name_String (Attribute.Value.Value) &
2066                            """ for Separate_Run_Path_Options",
2067                            Attribute.Value.Location, Project);
2068                   end;
2069
2070                elsif Attribute.Name = Name_Library_Support then
2071                   declare
2072                      pragma Unsuppress (All_Checks);
2073                   begin
2074                      Project.Config.Lib_Support :=
2075                        Library_Support'Value (Get_Name_String
2076                                               (Attribute.Value.Value));
2077                   exception
2078                      when Constraint_Error =>
2079                         Error_Msg
2080                           (Data.Flags,
2081                            "invalid value """ &
2082                            Get_Name_String (Attribute.Value.Value) &
2083                            """ for Library_Support",
2084                            Attribute.Value.Location, Project);
2085                   end;
2086
2087                elsif
2088                  Attribute.Name = Name_Library_Encapsulated_Supported
2089                then
2090                   declare
2091                      pragma Unsuppress (All_Checks);
2092                   begin
2093                      Project.Config.Lib_Encapsulated_Supported :=
2094                        Boolean'Value (Get_Name_String (Attribute.Value.Value));
2095                   exception
2096                      when Constraint_Error =>
2097                         Error_Msg
2098                           (Data.Flags,
2099                            "invalid value """
2100                              & Get_Name_String (Attribute.Value.Value)
2101                              & """ for Library_Encapsulated_Supported",
2102                            Attribute.Value.Location, Project);
2103                   end;
2104
2105                elsif Attribute.Name = Name_Shared_Library_Prefix then
2106                   Project.Config.Shared_Lib_Prefix :=
2107                     File_Name_Type (Attribute.Value.Value);
2108
2109                elsif Attribute.Name = Name_Shared_Library_Suffix then
2110                   Project.Config.Shared_Lib_Suffix :=
2111                     File_Name_Type (Attribute.Value.Value);
2112
2113                elsif Attribute.Name = Name_Symbolic_Link_Supported then
2114                   declare
2115                      pragma Unsuppress (All_Checks);
2116                   begin
2117                      Project.Config.Symbolic_Link_Supported :=
2118                        Boolean'Value (Get_Name_String
2119                                       (Attribute.Value.Value));
2120                   exception
2121                      when Constraint_Error =>
2122                         Error_Msg
2123                           (Data.Flags,
2124                            "invalid value """
2125                              & Get_Name_String (Attribute.Value.Value)
2126                              & """ for Symbolic_Link_Supported",
2127                            Attribute.Value.Location, Project);
2128                   end;
2129
2130                elsif
2131                  Attribute.Name = Name_Library_Major_Minor_Id_Supported
2132                then
2133                   declare
2134                      pragma Unsuppress (All_Checks);
2135                   begin
2136                      Project.Config.Lib_Maj_Min_Id_Supported :=
2137                        Boolean'Value (Get_Name_String
2138                                       (Attribute.Value.Value));
2139                   exception
2140                      when Constraint_Error =>
2141                         Error_Msg
2142                           (Data.Flags,
2143                            "invalid value """ &
2144                            Get_Name_String (Attribute.Value.Value) &
2145                            """ for Library_Major_Minor_Id_Supported",
2146                            Attribute.Value.Location, Project);
2147                   end;
2148
2149                elsif Attribute.Name = Name_Library_Auto_Init_Supported then
2150                   declare
2151                      pragma Unsuppress (All_Checks);
2152                   begin
2153                      Project.Config.Auto_Init_Supported :=
2154                        Boolean'Value (Get_Name_String (Attribute.Value.Value));
2155                   exception
2156                      when Constraint_Error =>
2157                         Error_Msg
2158                           (Data.Flags,
2159                            "invalid value """
2160                              & Get_Name_String (Attribute.Value.Value)
2161                              & """ for Library_Auto_Init_Supported",
2162                            Attribute.Value.Location, Project);
2163                   end;
2164
2165                elsif Attribute.Name = Name_Shared_Library_Minimum_Switches then
2166                   List := Attribute.Value.Values;
2167
2168                   if List /= Nil_String then
2169                      Put (Into_List => Project.Config.Shared_Lib_Min_Options,
2170                           From_List => List,
2171                           In_Tree   => Data.Tree);
2172                   end if;
2173
2174                elsif Attribute.Name = Name_Library_Version_Switches then
2175                   List := Attribute.Value.Values;
2176
2177                   if List /= Nil_String then
2178                      Put (Into_List => Project.Config.Lib_Version_Options,
2179                           From_List => List,
2180                           In_Tree   => Data.Tree);
2181                   end if;
2182                end if;
2183             end if;
2184
2185             Attribute_Id := Attribute.Next;
2186          end loop;
2187       end Process_Project_Level_Simple_Attributes;
2188
2189       --------------------------------------------
2190       -- Process_Project_Level_Array_Attributes --
2191       --------------------------------------------
2192
2193       procedure Process_Project_Level_Array_Attributes is
2194          Current_Array_Id : Array_Id;
2195          Current_Array    : Array_Data;
2196          Element_Id       : Array_Element_Id;
2197          Element          : Array_Element;
2198          List             : String_List_Id;
2199
2200       begin
2201          --  Process the associative array attributes at project level
2202
2203          Current_Array_Id := Project.Decl.Arrays;
2204          while Current_Array_Id /= No_Array loop
2205             Current_Array := Shared.Arrays.Table (Current_Array_Id);
2206
2207             Element_Id := Current_Array.Value;
2208             while Element_Id /= No_Array_Element loop
2209                Element := Shared.Array_Elements.Table (Element_Id);
2210
2211                --  Get the name of the language
2212
2213                Lang_Index :=
2214                  Get_Language_From_Name
2215                    (Project, Get_Name_String (Element.Index));
2216
2217                if Lang_Index /= No_Language_Index then
2218                   case Current_Array.Name is
2219                      when Name_Inherit_Source_Path =>
2220                         List := Element.Value.Values;
2221
2222                         if List /= Nil_String then
2223                            Put
2224                              (Into_List  =>
2225                                 Lang_Index.Config.Include_Compatible_Languages,
2226                               From_List  => List,
2227                               In_Tree    => Data.Tree,
2228                               Lower_Case => True);
2229                         end if;
2230
2231                      when Name_Toolchain_Description =>
2232
2233                         --  Attribute Toolchain_Description (<language>)
2234
2235                         Lang_Index.Config.Toolchain_Description :=
2236                           Element.Value.Value;
2237
2238                      when Name_Toolchain_Version =>
2239
2240                         --  Attribute Toolchain_Version (<language>)
2241
2242                         Lang_Index.Config.Toolchain_Version :=
2243                           Element.Value.Value;
2244
2245                         --  For Ada, set proper checksum computation mode
2246
2247                         if Lang_Index.Name = Name_Ada then
2248                            declare
2249                               Vers : constant String :=
2250                                        Get_Name_String (Element.Value.Value);
2251                               pragma Assert (Vers'First = 1);
2252
2253                            begin
2254                               --  Version 6.3 or earlier
2255
2256                               if Vers'Length >= 8
2257                                 and then Vers (1 .. 5) = "GNAT "
2258                                 and then Vers (7) = '.'
2259                                 and then
2260                                   (Vers (6) < '6'
2261                                     or else
2262                                       (Vers (6) = '6' and then Vers (8) < '4'))
2263                               then
2264                                  Checksum_GNAT_6_3 := True;
2265
2266                                  --  Version 5.03 or earlier
2267
2268                                  if Vers (6) < '5'
2269                                    or else (Vers (6) = '5'
2270                                              and then Vers (Vers'Last) < '4')
2271                                  then
2272                                     Checksum_GNAT_5_03 := True;
2273
2274                                     --  Version 5.02 or earlier
2275
2276                                     if Vers (6) /= '5'
2277                                       or else Vers (Vers'Last) < '3'
2278                                     then
2279                                        Checksum_Accumulate_Token_Checksum :=
2280                                          False;
2281                                     end if;
2282                                  end if;
2283                               end if;
2284                            end;
2285                         end if;
2286
2287                      when Name_Runtime_Library_Dir =>
2288
2289                         --  Attribute Runtime_Library_Dir (<language>)
2290
2291                         Lang_Index.Config.Runtime_Library_Dir :=
2292                           Element.Value.Value;
2293
2294                      when Name_Runtime_Source_Dir =>
2295
2296                         --  Attribute Runtime_Source_Dir (<language>)
2297
2298                         Lang_Index.Config.Runtime_Source_Dir :=
2299                           Element.Value.Value;
2300
2301                      when Name_Object_Generated =>
2302                         declare
2303                            pragma Unsuppress (All_Checks);
2304                            Value : Boolean;
2305
2306                         begin
2307                            Value :=
2308                              Boolean'Value
2309                                (Get_Name_String (Element.Value.Value));
2310
2311                            Lang_Index.Config.Object_Generated := Value;
2312
2313                            --  If no object is generated, no object may be
2314                            --  linked.
2315
2316                            if not Value then
2317                               Lang_Index.Config.Objects_Linked := False;
2318                            end if;
2319
2320                         exception
2321                            when Constraint_Error =>
2322                               Error_Msg
2323                                 (Data.Flags,
2324                                  "invalid value """
2325                                  & Get_Name_String (Element.Value.Value)
2326                                  & """ for Object_Generated",
2327                                  Element.Value.Location, Project);
2328                         end;
2329
2330                      when Name_Objects_Linked =>
2331                         declare
2332                            pragma Unsuppress (All_Checks);
2333                            Value : Boolean;
2334
2335                         begin
2336                            Value :=
2337                              Boolean'Value
2338                                (Get_Name_String (Element.Value.Value));
2339
2340                            --  No change if Object_Generated is False, as this
2341                            --  forces Objects_Linked to be False too.
2342
2343                            if Lang_Index.Config.Object_Generated then
2344                               Lang_Index.Config.Objects_Linked := Value;
2345                            end if;
2346
2347                         exception
2348                            when Constraint_Error =>
2349                               Error_Msg
2350                                 (Data.Flags,
2351                                  "invalid value """
2352                                  & Get_Name_String (Element.Value.Value)
2353                                  & """ for Objects_Linked",
2354                                  Element.Value.Location, Project);
2355                         end;
2356                      when others =>
2357                         null;
2358                   end case;
2359                end if;
2360
2361                Element_Id := Element.Next;
2362             end loop;
2363
2364             Current_Array_Id := Current_Array.Next;
2365          end loop;
2366       end Process_Project_Level_Array_Attributes;
2367
2368    --  Start of processing for Check_Configuration
2369
2370    begin
2371       Process_Project_Level_Simple_Attributes;
2372       Process_Project_Level_Array_Attributes;
2373       Process_Packages;
2374
2375       --  For unit based languages, set Casing, Dot_Replacement and
2376       --  Separate_Suffix in Naming_Data.
2377
2378       Lang_Index := Project.Languages;
2379       while Lang_Index /= No_Language_Index loop
2380          if Lang_Index.Config.Kind = Unit_Based then
2381             Lang_Index.Config.Naming_Data.Casing := Casing;
2382             Lang_Index.Config.Naming_Data.Dot_Replacement := Dot_Replacement;
2383
2384             if Separate_Suffix /= No_File then
2385                Lang_Index.Config.Naming_Data.Separate_Suffix :=
2386                  Separate_Suffix;
2387             end if;
2388
2389             exit;
2390          end if;
2391
2392          Lang_Index := Lang_Index.Next;
2393       end loop;
2394
2395       --  Give empty names to various prefixes/suffixes, if they have not
2396       --  been specified in the configuration.
2397
2398       if Project.Config.Archive_Suffix = No_File then
2399          Project.Config.Archive_Suffix := Empty_File;
2400       end if;
2401
2402       if Project.Config.Shared_Lib_Prefix = No_File then
2403          Project.Config.Shared_Lib_Prefix := Empty_File;
2404       end if;
2405
2406       if Project.Config.Shared_Lib_Suffix = No_File then
2407          Project.Config.Shared_Lib_Suffix := Empty_File;
2408       end if;
2409
2410       Lang_Index := Project.Languages;
2411       while Lang_Index /= No_Language_Index loop
2412
2413          --  For all languages, Compiler_Driver needs to be specified. This is
2414          --  only needed if we do intend to compile (not in GPS for instance).
2415
2416          if Data.Flags.Compiler_Driver_Mandatory
2417            and then Lang_Index.Config.Compiler_Driver = No_File
2418          then
2419             Error_Msg_Name_1 := Lang_Index.Display_Name;
2420             Error_Msg
2421               (Data.Flags,
2422                "?no compiler specified for language %%" &
2423                  ", ignoring all its sources",
2424                No_Location, Project);
2425
2426             if Lang_Index = Project.Languages then
2427                Project.Languages := Lang_Index.Next;
2428             else
2429                Prev_Index.Next := Lang_Index.Next;
2430             end if;
2431
2432          elsif Lang_Index.Config.Kind = Unit_Based then
2433             Prev_Index := Lang_Index;
2434
2435             --  For unit based languages, Dot_Replacement, Spec_Suffix and
2436             --  Body_Suffix need to be specified.
2437
2438             if Lang_Index.Config.Naming_Data.Dot_Replacement = No_File then
2439                Error_Msg
2440                  (Data.Flags,
2441                   "Dot_Replacement not specified for " &
2442                   Get_Name_String (Lang_Index.Name),
2443                   No_Location, Project);
2444             end if;
2445
2446             if Lang_Index.Config.Naming_Data.Spec_Suffix = No_File then
2447                Error_Msg
2448                  (Data.Flags,
2449                   "Spec_Suffix not specified for " &
2450                   Get_Name_String (Lang_Index.Name),
2451                   No_Location, Project);
2452             end if;
2453
2454             if Lang_Index.Config.Naming_Data.Body_Suffix = No_File then
2455                Error_Msg
2456                  (Data.Flags,
2457                   "Body_Suffix not specified for " &
2458                   Get_Name_String (Lang_Index.Name),
2459                   No_Location, Project);
2460             end if;
2461
2462          else
2463             Prev_Index := Lang_Index;
2464
2465             --  For file based languages, either Spec_Suffix or Body_Suffix
2466             --  need to be specified.
2467
2468             if Data.Flags.Require_Sources_Other_Lang
2469               and then Lang_Index.Config.Naming_Data.Spec_Suffix = No_File
2470               and then Lang_Index.Config.Naming_Data.Body_Suffix = No_File
2471             then
2472                Error_Msg_Name_1 := Lang_Index.Display_Name;
2473                Error_Msg
2474                  (Data.Flags,
2475                   "no suffixes specified for %%",
2476                   No_Location, Project);
2477             end if;
2478          end if;
2479
2480          Lang_Index := Lang_Index.Next;
2481       end loop;
2482    end Check_Configuration;
2483
2484    -------------------------------
2485    -- Check_If_Externally_Built --
2486    -------------------------------
2487
2488    procedure Check_If_Externally_Built
2489      (Project : Project_Id;
2490       Data    : in out Tree_Processing_Data)
2491    is
2492       Shared   : constant Shared_Project_Tree_Data_Access := Data.Tree.Shared;
2493       Externally_Built : constant Variable_Value :=
2494                            Util.Value_Of
2495                             (Name_Externally_Built,
2496                              Project.Decl.Attributes, Shared);
2497
2498    begin
2499       if not Externally_Built.Default then
2500          Get_Name_String (Externally_Built.Value);
2501          To_Lower (Name_Buffer (1 .. Name_Len));
2502
2503          if Name_Buffer (1 .. Name_Len) = "true" then
2504             Project.Externally_Built := True;
2505
2506          elsif Name_Buffer (1 .. Name_Len) /= "false" then
2507             Error_Msg (Data.Flags,
2508                        "Externally_Built may only be true or false",
2509                        Externally_Built.Location, Project);
2510          end if;
2511       end if;
2512
2513       --  A virtual project extending an externally built project is itself
2514       --  externally built.
2515
2516       if Project.Virtual and then Project.Extends /= No_Project then
2517          Project.Externally_Built := Project.Extends.Externally_Built;
2518       end if;
2519
2520       if Project.Externally_Built then
2521          Debug_Output ("project is externally built");
2522       else
2523          Debug_Output ("project is not externally built");
2524       end if;
2525    end Check_If_Externally_Built;
2526
2527    ----------------------
2528    -- Check_Interfaces --
2529    ----------------------
2530
2531    procedure Check_Interfaces
2532      (Project : Project_Id;
2533       Data    : in out Tree_Processing_Data)
2534    is
2535       Shared : constant Shared_Project_Tree_Data_Access := Data.Tree.Shared;
2536
2537       Interfaces : constant Prj.Variable_Value :=
2538                      Prj.Util.Value_Of
2539                        (Snames.Name_Interfaces,
2540                         Project.Decl.Attributes,
2541                         Shared);
2542
2543       Library_Interface : constant Prj.Variable_Value :=
2544                             Prj.Util.Value_Of
2545                               (Snames.Name_Library_Interface,
2546                                Project.Decl.Attributes,
2547                                Shared);
2548
2549       List      : String_List_Id;
2550       Element   : String_Element;
2551       Name      : File_Name_Type;
2552       Iter      : Source_Iterator;
2553       Source    : Source_Id;
2554       Project_2 : Project_Id;
2555       Other     : Source_Id;
2556
2557       Interface_ALIs : String_List_Id := Nil_String;
2558
2559       Unit_Found : Boolean;
2560
2561    begin
2562       if not Interfaces.Default then
2563
2564          --  Set In_Interfaces to False for all sources. It will be set to True
2565          --  later for the sources in the Interfaces list.
2566
2567          Project_2 := Project;
2568          while Project_2 /= No_Project loop
2569             Iter := For_Each_Source (Data.Tree, Project_2);
2570             loop
2571                Source := Prj.Element (Iter);
2572                exit when Source = No_Source;
2573                Source.In_Interfaces := False;
2574                Next (Iter);
2575             end loop;
2576
2577             Project_2 := Project_2.Extends;
2578          end loop;
2579
2580          List := Interfaces.Values;
2581          while List /= Nil_String loop
2582             Element := Shared.String_Elements.Table (List);
2583             Name := Canonical_Case_File_Name (Element.Value);
2584
2585             Project_2 := Project;
2586             Big_Loop :
2587             while Project_2 /= No_Project loop
2588                if Project.Qualifier = Aggregate_Library then
2589                   --  For an aggregate library we want to consider sources of
2590                   --  all aggregated projects.
2591
2592                   Iter := For_Each_Source (Data.Tree);
2593
2594                else
2595                   Iter := For_Each_Source (Data.Tree, Project_2);
2596                end if;
2597
2598                loop
2599                   Source := Prj.Element (Iter);
2600                   exit when Source = No_Source;
2601
2602                   if Source.File = Name then
2603                      if not Source.Locally_Removed then
2604                         Source.In_Interfaces := True;
2605                         Source.Declared_In_Interfaces := True;
2606
2607                         Other := Other_Part (Source);
2608
2609                         if Other /= No_Source then
2610                            Other.In_Interfaces := True;
2611                            Other.Declared_In_Interfaces := True;
2612                         end if;
2613
2614                         if Source.Language.Config.Kind = Unit_Based then
2615                            if Source.Kind = Spec
2616                              and then Other_Part (Source) /= No_Source
2617                            then
2618                               Source := Other_Part (Source);
2619                            end if;
2620
2621                            String_Element_Table.Increment_Last
2622                              (Shared.String_Elements);
2623
2624                            Shared.String_Elements.Table
2625                              (String_Element_Table.Last
2626                                 (Shared.String_Elements)) :=
2627                              (Value         => Name_Id (Source.Dep_Name),
2628                               Index         => 0,
2629                               Display_Value => Name_Id (Source.Dep_Name),
2630                               Location      => No_Location,
2631                               Flag          => False,
2632                               Next          => Interface_ALIs);
2633
2634                            Interface_ALIs :=
2635                              String_Element_Table.Last
2636                                (Shared.String_Elements);
2637                         end if;
2638
2639                         Debug_Output
2640                           ("interface: ", Name_Id (Source.Path.Name));
2641                      end if;
2642
2643                      exit Big_Loop;
2644                   end if;
2645
2646                   Next (Iter);
2647                end loop;
2648
2649                Project_2 := Project_2.Extends;
2650             end loop Big_Loop;
2651
2652             if Source = No_Source then
2653                Error_Msg_File_1 := File_Name_Type (Element.Value);
2654                Error_Msg_Name_1 := Project.Name;
2655
2656                Error_Msg
2657                  (Data.Flags,
2658                   "{ cannot be an interface of project %% "
2659                   & "as it is not one of its sources",
2660                   Element.Location, Project);
2661             end if;
2662
2663             List := Element.Next;
2664          end loop;
2665
2666          Project.Interfaces_Defined := True;
2667          Project.Lib_Interface_ALIs := Interface_ALIs;
2668
2669       elsif Project.Library and then not Library_Interface.Default then
2670
2671          --  Set In_Interfaces to False for all sources. It will be set to True
2672          --  later for the sources in the Library_Interface list.
2673
2674          Project_2 := Project;
2675          while Project_2 /= No_Project loop
2676             Iter := For_Each_Source (Data.Tree, Project_2);
2677             loop
2678                Source := Prj.Element (Iter);
2679                exit when Source = No_Source;
2680                Source.In_Interfaces := False;
2681                Next (Iter);
2682             end loop;
2683
2684             Project_2 := Project_2.Extends;
2685          end loop;
2686
2687          List := Library_Interface.Values;
2688          while List /= Nil_String loop
2689             Element := Shared.String_Elements.Table (List);
2690             Get_Name_String (Element.Value);
2691             To_Lower (Name_Buffer (1 .. Name_Len));
2692             Name := Name_Find;
2693             Unit_Found := False;
2694
2695             Project_2 := Project;
2696             Big_Loop_2 :
2697             while Project_2 /= No_Project loop
2698                if Project.Qualifier = Aggregate_Library then
2699                   --  For an aggregate library we want to consider sources of
2700                   --  all aggregated projects.
2701
2702                   Iter := For_Each_Source (Data.Tree);
2703
2704                else
2705                   Iter := For_Each_Source (Data.Tree, Project_2);
2706                end if;
2707
2708                loop
2709                   Source := Prj.Element (Iter);
2710                   exit when Source = No_Source;
2711
2712                   if Source.Unit /= No_Unit_Index
2713                     and then Source.Unit.Name = Name_Id (Name)
2714                   then
2715                      if not Source.Locally_Removed then
2716                         Source.In_Interfaces := True;
2717                         Source.Declared_In_Interfaces := True;
2718                         Project.Interfaces_Defined := True;
2719
2720                         Other := Other_Part (Source);
2721
2722                         if Other /= No_Source then
2723                            Other.In_Interfaces := True;
2724                            Other.Declared_In_Interfaces := True;
2725                         end if;
2726
2727                         Debug_Output
2728                           ("interface: ", Name_Id (Source.Path.Name));
2729
2730                         if Source.Kind = Spec
2731                           and then Other_Part (Source) /= No_Source
2732                         then
2733                            Source := Other_Part (Source);
2734                         end if;
2735
2736                         String_Element_Table.Increment_Last
2737                           (Shared.String_Elements);
2738
2739                         Shared.String_Elements.Table
2740                           (String_Element_Table.Last
2741                              (Shared.String_Elements)) :=
2742                           (Value         => Name_Id (Source.Dep_Name),
2743                            Index         => 0,
2744                            Display_Value => Name_Id (Source.Dep_Name),
2745                            Location      => No_Location,
2746                            Flag          => False,
2747                            Next          => Interface_ALIs);
2748
2749                         Interface_ALIs :=
2750                           String_Element_Table.Last (Shared.String_Elements);
2751                      end if;
2752
2753                      Unit_Found := True;
2754                      exit Big_Loop_2;
2755                   end if;
2756
2757                   Next (Iter);
2758                end loop;
2759
2760                Project_2 := Project_2.Extends;
2761             end loop Big_Loop_2;
2762
2763             if not Unit_Found then
2764                Error_Msg_Name_1 := Name_Id (Name);
2765
2766                Error_Msg
2767                  (Data.Flags,
2768                   "%% is not a unit of this project",
2769                   Element.Location, Project);
2770             end if;
2771
2772             List := Element.Next;
2773          end loop;
2774
2775          Project.Lib_Interface_ALIs := Interface_ALIs;
2776
2777       elsif Project.Extends /= No_Project
2778         and then Project.Extends.Interfaces_Defined
2779       then
2780          Project.Interfaces_Defined := True;
2781
2782          Iter := For_Each_Source (Data.Tree, Project);
2783          loop
2784             Source := Prj.Element (Iter);
2785             exit when Source = No_Source;
2786
2787             if not Source.Declared_In_Interfaces then
2788                Source.In_Interfaces := False;
2789             end if;
2790
2791             Next (Iter);
2792          end loop;
2793
2794          Project.Lib_Interface_ALIs := Project.Extends.Lib_Interface_ALIs;
2795       end if;
2796    end Check_Interfaces;
2797
2798    ------------------------------
2799    -- Check_Library_Attributes --
2800    ------------------------------
2801
2802    --  This procedure is awfully long (over 700 lines) should be broken up???
2803
2804    procedure Check_Library_Attributes
2805      (Project : Project_Id;
2806       Data    : in out Tree_Processing_Data)
2807    is
2808       Shared : constant Shared_Project_Tree_Data_Access := Data.Tree.Shared;
2809
2810       Attributes     : constant Prj.Variable_Id := Project.Decl.Attributes;
2811
2812       Lib_Dir        : constant Prj.Variable_Value :=
2813                          Prj.Util.Value_Of
2814                            (Snames.Name_Library_Dir, Attributes, Shared);
2815
2816       Lib_Name       : constant Prj.Variable_Value :=
2817                          Prj.Util.Value_Of
2818                            (Snames.Name_Library_Name, Attributes, Shared);
2819
2820       Lib_Standalone : constant Prj.Variable_Value :=
2821                          Prj.Util.Value_Of
2822                            (Snames.Name_Library_Standalone,
2823                             Attributes, Shared);
2824
2825       Lib_Version    : constant Prj.Variable_Value :=
2826                          Prj.Util.Value_Of
2827                            (Snames.Name_Library_Version, Attributes, Shared);
2828
2829       Lib_ALI_Dir    : constant Prj.Variable_Value :=
2830                          Prj.Util.Value_Of
2831                            (Snames.Name_Library_Ali_Dir, Attributes, Shared);
2832
2833       Lib_GCC        : constant Prj.Variable_Value :=
2834                          Prj.Util.Value_Of
2835                            (Snames.Name_Library_GCC, Attributes, Shared);
2836
2837       The_Lib_Kind   : constant Prj.Variable_Value :=
2838                          Prj.Util.Value_Of
2839                            (Snames.Name_Library_Kind, Attributes, Shared);
2840
2841       Imported_Project_List : Project_List;
2842       Continuation          : String_Access := No_Continuation_String'Access;
2843       Support_For_Libraries : Library_Support;
2844
2845       Library_Directory_Present : Boolean;
2846
2847       procedure Check_Library (Proj : Project_Id; Extends : Boolean);
2848       --  Check if an imported or extended project if also a library project
2849
2850       -------------------
2851       -- Check_Library --
2852       -------------------
2853
2854       procedure Check_Library (Proj : Project_Id; Extends : Boolean) is
2855          Src_Id : Source_Id;
2856          Iter   : Source_Iterator;
2857
2858       begin
2859          if Proj /= No_Project then
2860             if not Proj.Library then
2861
2862                --  The only not library projects that are OK are those that
2863                --  have no sources. However, header files from non-Ada
2864                --  languages are OK, as there is nothing to compile.
2865
2866                Iter := For_Each_Source (Data.Tree, Proj);
2867                loop
2868                   Src_Id := Prj.Element (Iter);
2869                   exit when Src_Id = No_Source
2870                     or else Src_Id.Language.Config.Kind /= File_Based
2871                     or else Src_Id.Kind /= Spec;
2872                   Next (Iter);
2873                end loop;
2874
2875                if Src_Id /= No_Source then
2876                   Error_Msg_Name_1 := Project.Name;
2877                   Error_Msg_Name_2 := Proj.Name;
2878
2879                   if Extends then
2880                      if Project.Library_Kind /= Static then
2881                         Error_Msg
2882                           (Data.Flags,
2883                            Continuation.all &
2884                            "shared library project %% cannot extend " &
2885                            "project %% that is not a library project",
2886                            Project.Location, Project);
2887                         Continuation := Continuation_String'Access;
2888                      end if;
2889
2890                   elsif not Unchecked_Shared_Lib_Imports
2891                     and then Project.Library_Kind /= Static
2892                   then
2893                      Error_Msg
2894                        (Data.Flags,
2895                         Continuation.all &
2896                         "shared library project %% cannot import project %% " &
2897                         "that is not a shared library project",
2898                         Project.Location, Project);
2899                      Continuation := Continuation_String'Access;
2900                   end if;
2901                end if;
2902
2903             elsif Project.Library_Kind /= Static
2904               and then not Lib_Standalone.Default
2905               and then Get_Name_String (Lib_Standalone.Value) = "encapsulated"
2906               and then Proj.Library_Kind /= Static
2907             then
2908                --  An encapsulated library must depend only on static libraries
2909
2910                Error_Msg_Name_1 := Project.Name;
2911                Error_Msg_Name_2 := Proj.Name;
2912
2913                Error_Msg
2914                  (Data.Flags,
2915                   Continuation.all &
2916                     "encapsulated library project %% cannot import shared " &
2917                     "library project %%",
2918                   Project.Location, Project);
2919                Continuation := Continuation_String'Access;
2920
2921             elsif Project.Library_Kind /= Static
2922               and then Proj.Library_Kind = Static
2923               and then
2924                 (Lib_Standalone.Default
2925                   or else
2926                     Get_Name_String (Lib_Standalone.Value) /= "encapsulated")
2927             then
2928                Error_Msg_Name_1 := Project.Name;
2929                Error_Msg_Name_2 := Proj.Name;
2930
2931                if Extends then
2932                   Error_Msg
2933                     (Data.Flags,
2934                      Continuation.all &
2935                      "shared library project %% cannot extend static " &
2936                      "library project %%",
2937                      Project.Location, Project);
2938                   Continuation := Continuation_String'Access;
2939
2940                elsif not Unchecked_Shared_Lib_Imports then
2941                   Error_Msg
2942                     (Data.Flags,
2943                      Continuation.all &
2944                      "shared library project %% cannot import static " &
2945                      "library project %%",
2946                      Project.Location, Project);
2947                   Continuation := Continuation_String'Access;
2948                end if;
2949
2950             end if;
2951          end if;
2952       end Check_Library;
2953
2954       Dir_Exists : Boolean;
2955
2956    --  Start of processing for Check_Library_Attributes
2957
2958    begin
2959       Library_Directory_Present := Lib_Dir.Value /= Empty_String;
2960
2961       --  Special case of extending project
2962
2963       if Project.Extends /= No_Project then
2964
2965          --  If the project extended is a library project, we inherit the
2966          --  library name, if it is not redefined; we check that the library
2967          --  directory is specified.
2968
2969          if Project.Extends.Library then
2970             if Project.Qualifier = Standard then
2971                Error_Msg
2972                  (Data.Flags,
2973                   "a standard project cannot extend a library project",
2974                   Project.Location, Project);
2975
2976             else
2977                if Lib_Name.Default then
2978                   Project.Library_Name := Project.Extends.Library_Name;
2979                end if;
2980
2981                if Lib_Dir.Default then
2982                   if not Project.Virtual then
2983                      Error_Msg
2984                        (Data.Flags,
2985                         "a project extending a library project must " &
2986                         "specify an attribute Library_Dir",
2987                         Project.Location, Project);
2988
2989                   else
2990                      --  For a virtual project extending a library project,
2991                      --  inherit library directory and library kind.
2992
2993                      Project.Library_Dir := Project.Extends.Library_Dir;
2994                      Library_Directory_Present := True;
2995                      Project.Library_Kind := Project.Extends.Library_Kind;
2996                   end if;
2997                end if;
2998             end if;
2999          end if;
3000       end if;
3001
3002       pragma Assert (Lib_Name.Kind = Single);
3003
3004       if Lib_Name.Value = Empty_String then
3005          if Current_Verbosity = High
3006            and then Project.Library_Name = No_Name
3007          then
3008             Debug_Indent;
3009             Write_Line ("no library name");
3010          end if;
3011
3012       else
3013          --  There is no restriction on the syntax of library names
3014
3015          Project.Library_Name := Lib_Name.Value;
3016       end if;
3017
3018       if Project.Library_Name /= No_Name then
3019          if Current_Verbosity = High then
3020             Write_Attr
3021               ("Library name: ", Get_Name_String (Project.Library_Name));
3022          end if;
3023
3024          pragma Assert (Lib_Dir.Kind = Single);
3025
3026          if not Library_Directory_Present then
3027             Debug_Output ("no library directory");
3028
3029          else
3030             --  Find path name (unless inherited), check that it is a directory
3031
3032             if Project.Library_Dir = No_Path_Information then
3033                Locate_Directory
3034                  (Project,
3035                   File_Name_Type (Lib_Dir.Value),
3036                   Path             => Project.Library_Dir,
3037                   Dir_Exists       => Dir_Exists,
3038                   Data             => Data,
3039                   Create           => "library",
3040                   Must_Exist       => False,
3041                   Location         => Lib_Dir.Location,
3042                   Externally_Built => Project.Externally_Built);
3043
3044             else
3045                Dir_Exists :=
3046                  Is_Directory
3047                    (Get_Name_String (Project.Library_Dir.Display_Name));
3048             end if;
3049
3050             if not Dir_Exists then
3051
3052                --  Get the absolute name of the library directory that
3053                --  does not exist, to report an error.
3054
3055                Err_Vars.Error_Msg_File_1 :=
3056                  File_Name_Type (Project.Library_Dir.Display_Name);
3057                Error_Msg
3058                  (Data.Flags,
3059                   "library directory { does not exist",
3060                   Lib_Dir.Location, Project);
3061
3062             --  Checks for object/source directories
3063
3064             elsif not Project.Externally_Built
3065
3066               --  An aggregate library does not have sources or objects, so
3067               --  these tests are not required in this case.
3068
3069               and then Project.Qualifier /= Aggregate_Library
3070             then
3071                --  Library directory cannot be the same as Object directory
3072
3073                if Project.Library_Dir.Name = Project.Object_Directory.Name then
3074                   Error_Msg
3075                     (Data.Flags,
3076                      "library directory cannot be the same " &
3077                      "as object directory",
3078                      Lib_Dir.Location, Project);
3079                   Project.Library_Dir := No_Path_Information;
3080
3081                else
3082                   declare
3083                      OK       : Boolean := True;
3084                      Dirs_Id  : String_List_Id;
3085                      Dir_Elem : String_Element;
3086                      Pid      : Project_List;
3087
3088                   begin
3089                      --  The library directory cannot be the same as a source
3090                      --  directory of the current project.
3091
3092                      Dirs_Id := Project.Source_Dirs;
3093                      while Dirs_Id /= Nil_String loop
3094                         Dir_Elem := Shared.String_Elements.Table (Dirs_Id);
3095                         Dirs_Id  := Dir_Elem.Next;
3096
3097                         if Project.Library_Dir.Name =
3098                           Path_Name_Type (Dir_Elem.Value)
3099                         then
3100                            Err_Vars.Error_Msg_File_1 :=
3101                              File_Name_Type (Dir_Elem.Value);
3102                            Error_Msg
3103                              (Data.Flags,
3104                               "library directory cannot be the same " &
3105                               "as source directory {",
3106                               Lib_Dir.Location, Project);
3107                            OK := False;
3108                            exit;
3109                         end if;
3110                      end loop;
3111
3112                      if OK then
3113
3114                         --  The library directory cannot be the same as a
3115                         --  source directory of another project either.
3116
3117                         Pid := Data.Tree.Projects;
3118                         Project_Loop : loop
3119                            exit Project_Loop when Pid = null;
3120
3121                            if Pid.Project /= Project then
3122                               Dirs_Id := Pid.Project.Source_Dirs;
3123
3124                               Dir_Loop : while Dirs_Id /= Nil_String loop
3125                                  Dir_Elem :=
3126                                    Shared.String_Elements.Table (Dirs_Id);
3127                                  Dirs_Id  := Dir_Elem.Next;
3128
3129                                  if Project.Library_Dir.Name =
3130                                    Path_Name_Type (Dir_Elem.Value)
3131                                  then
3132                                     Err_Vars.Error_Msg_File_1 :=
3133                                       File_Name_Type (Dir_Elem.Value);
3134                                     Err_Vars.Error_Msg_Name_1 :=
3135                                       Pid.Project.Name;
3136
3137                                     Error_Msg
3138                                       (Data.Flags,
3139                                        "library directory cannot be the same" &
3140                                        " as source directory { of project %%",
3141                                        Lib_Dir.Location, Project);
3142                                     OK := False;
3143                                     exit Project_Loop;
3144                                  end if;
3145                               end loop Dir_Loop;
3146                            end if;
3147
3148                            Pid := Pid.Next;
3149                         end loop Project_Loop;
3150                      end if;
3151
3152                      if not OK then
3153                         Project.Library_Dir := No_Path_Information;
3154
3155                      elsif Current_Verbosity = High then
3156
3157                         --  Display the Library directory in high verbosity
3158
3159                         Write_Attr
3160                           ("Library directory",
3161                            Get_Name_String (Project.Library_Dir.Display_Name));
3162                      end if;
3163                   end;
3164                end if;
3165             end if;
3166          end if;
3167
3168       end if;
3169
3170       Project.Library :=
3171         Project.Library_Dir /= No_Path_Information
3172         and then Project.Library_Name /= No_Name;
3173
3174       if Project.Extends = No_Project then
3175          case Project.Qualifier is
3176             when Standard =>
3177                if Project.Library then
3178                   Error_Msg
3179                     (Data.Flags,
3180                      "a standard project cannot be a library project",
3181                      Lib_Name.Location, Project);
3182                end if;
3183
3184             when Library | Aggregate_Library =>
3185                if not Project.Library then
3186                   if Project.Library_Name = No_Name then
3187                      Error_Msg
3188                        (Data.Flags,
3189                         "attribute Library_Name not declared",
3190                         Project.Location, Project);
3191
3192                      if not Library_Directory_Present then
3193                         Error_Msg
3194                           (Data.Flags,
3195                            "\attribute Library_Dir not declared",
3196                            Project.Location, Project);
3197                      end if;
3198
3199                   elsif Project.Library_Dir = No_Path_Information then
3200                      Error_Msg
3201                        (Data.Flags,
3202                         "attribute Library_Dir not declared",
3203                         Project.Location, Project);
3204                   end if;
3205                end if;
3206
3207             when others =>
3208                null;
3209          end case;
3210       end if;
3211
3212       if Project.Library then
3213          Support_For_Libraries := Project.Config.Lib_Support;
3214
3215          if Support_For_Libraries = Prj.None then
3216             Error_Msg
3217               (Data.Flags,
3218                "?libraries are not supported on this platform",
3219                Lib_Name.Location, Project);
3220             Project.Library := False;
3221
3222          else
3223             if Lib_ALI_Dir.Value = Empty_String then
3224                Debug_Output ("no library ALI directory specified");
3225                Project.Library_ALI_Dir := Project.Library_Dir;
3226
3227             else
3228                --  Find path name, check that it is a directory
3229
3230                Locate_Directory
3231                  (Project,
3232                   File_Name_Type (Lib_ALI_Dir.Value),
3233                   Path             => Project.Library_ALI_Dir,
3234                   Create           => "library ALI",
3235                   Dir_Exists       => Dir_Exists,
3236                   Data             => Data,
3237                   Must_Exist       => False,
3238                   Location         => Lib_ALI_Dir.Location,
3239                   Externally_Built => Project.Externally_Built);
3240
3241                if not Dir_Exists then
3242
3243                   --  Get the absolute name of the library ALI directory that
3244                   --  does not exist, to report an error.
3245
3246                   Err_Vars.Error_Msg_File_1 :=
3247                     File_Name_Type (Project.Library_ALI_Dir.Display_Name);
3248                   Error_Msg
3249                     (Data.Flags,
3250                      "library 'A'L'I directory { does not exist",
3251                      Lib_ALI_Dir.Location, Project);
3252                end if;
3253
3254                if not Project.Externally_Built
3255                  and then Project.Library_ALI_Dir /= Project.Library_Dir
3256                then
3257                   --  The library ALI directory cannot be the same as the
3258                   --  Object directory.
3259
3260                   if Project.Library_ALI_Dir = Project.Object_Directory then
3261                      Error_Msg
3262                        (Data.Flags,
3263                         "library 'A'L'I directory cannot be the same " &
3264                         "as object directory",
3265                         Lib_ALI_Dir.Location, Project);
3266                      Project.Library_ALI_Dir := No_Path_Information;
3267
3268                   else
3269                      declare
3270                         OK       : Boolean := True;
3271                         Dirs_Id  : String_List_Id;
3272                         Dir_Elem : String_Element;
3273                         Pid      : Project_List;
3274
3275                      begin
3276                         --  The library ALI directory cannot be the same as
3277                         --  a source directory of the current project.
3278
3279                         Dirs_Id := Project.Source_Dirs;
3280                         while Dirs_Id /= Nil_String loop
3281                            Dir_Elem := Shared.String_Elements.Table (Dirs_Id);
3282                            Dirs_Id  := Dir_Elem.Next;
3283
3284                            if Project.Library_ALI_Dir.Name =
3285                              Path_Name_Type (Dir_Elem.Value)
3286                            then
3287                               Err_Vars.Error_Msg_File_1 :=
3288                                 File_Name_Type (Dir_Elem.Value);
3289                               Error_Msg
3290                                 (Data.Flags,
3291                                  "library 'A'L'I directory cannot be " &
3292                                  "the same as source directory {",
3293                                  Lib_ALI_Dir.Location, Project);
3294                               OK := False;
3295                               exit;
3296                            end if;
3297                         end loop;
3298
3299                         if OK then
3300
3301                            --  The library ALI directory cannot be the same as
3302                            --  a source directory of another project either.
3303
3304                            Pid := Data.Tree.Projects;
3305                            ALI_Project_Loop : loop
3306                               exit ALI_Project_Loop when Pid = null;
3307
3308                               if Pid.Project /= Project then
3309                                  Dirs_Id := Pid.Project.Source_Dirs;
3310
3311                                  ALI_Dir_Loop :
3312                                  while Dirs_Id /= Nil_String loop
3313                                     Dir_Elem :=
3314                                       Shared.String_Elements.Table (Dirs_Id);
3315                                     Dirs_Id  := Dir_Elem.Next;
3316
3317                                     if Project.Library_ALI_Dir.Name =
3318                                         Path_Name_Type (Dir_Elem.Value)
3319                                     then
3320                                        Err_Vars.Error_Msg_File_1 :=
3321                                          File_Name_Type (Dir_Elem.Value);
3322                                        Err_Vars.Error_Msg_Name_1 :=
3323                                          Pid.Project.Name;
3324
3325                                        Error_Msg
3326                                          (Data.Flags,
3327                                           "library 'A'L'I directory cannot " &
3328                                           "be the same as source directory " &
3329                                           "{ of project %%",
3330                                           Lib_ALI_Dir.Location, Project);
3331                                        OK := False;
3332                                        exit ALI_Project_Loop;
3333                                     end if;
3334                                  end loop ALI_Dir_Loop;
3335                               end if;
3336                               Pid := Pid.Next;
3337                            end loop ALI_Project_Loop;
3338                         end if;
3339
3340                         if not OK then
3341                            Project.Library_ALI_Dir := No_Path_Information;
3342
3343                         elsif Current_Verbosity = High then
3344
3345                            --  Display Library ALI directory in high verbosity
3346
3347                            Write_Attr
3348                              ("Library ALI dir",
3349                               Get_Name_String
3350                                 (Project.Library_ALI_Dir.Display_Name));
3351                         end if;
3352                      end;
3353                   end if;
3354                end if;
3355             end if;
3356
3357             pragma Assert (Lib_Version.Kind = Single);
3358
3359             if Lib_Version.Value = Empty_String then
3360                Debug_Output ("no library version specified");
3361
3362             else
3363                Project.Lib_Internal_Name := Lib_Version.Value;
3364             end if;
3365
3366             pragma Assert (The_Lib_Kind.Kind = Single);
3367
3368             if The_Lib_Kind.Value = Empty_String then
3369                Debug_Output ("no library kind specified");
3370
3371             else
3372                Get_Name_String (The_Lib_Kind.Value);
3373
3374                declare
3375                   Kind_Name : constant String :=
3376                                 To_Lower (Name_Buffer (1 .. Name_Len));
3377
3378                   OK : Boolean := True;
3379
3380                begin
3381                   if Kind_Name = "static" then
3382                      Project.Library_Kind := Static;
3383
3384                   elsif Kind_Name = "dynamic" then
3385                      Project.Library_Kind := Dynamic;
3386
3387                   elsif Kind_Name = "relocatable" then
3388                      Project.Library_Kind := Relocatable;
3389
3390                   else
3391                      Error_Msg
3392                        (Data.Flags,
3393                         "illegal value for Library_Kind",
3394                         The_Lib_Kind.Location, Project);
3395                      OK := False;
3396                   end if;
3397
3398                   if Current_Verbosity = High and then OK then
3399                      Write_Attr ("Library kind", Kind_Name);
3400                   end if;
3401
3402                   if Project.Library_Kind /= Static then
3403                      if Support_For_Libraries = Prj.Static_Only then
3404                         Error_Msg
3405                           (Data.Flags,
3406                            "only static libraries are supported " &
3407                            "on this platform",
3408                            The_Lib_Kind.Location, Project);
3409                         Project.Library := False;
3410
3411                      else
3412                         --  Check if (obsolescent) attribute Library_GCC or
3413                         --  Linker'Driver is declared.
3414
3415                         if Lib_GCC.Value /= Empty_String then
3416                            Error_Msg
3417                              (Data.Flags,
3418                               "?Library_'G'C'C is an obsolescent attribute, " &
3419                               "use Linker''Driver instead",
3420                               Lib_GCC.Location, Project);
3421                            Project.Config.Shared_Lib_Driver :=
3422                              File_Name_Type (Lib_GCC.Value);
3423
3424                         else
3425                            declare
3426                               Linker : constant Package_Id :=
3427                                          Value_Of
3428                                            (Name_Linker,
3429                                             Project.Decl.Packages,
3430                                             Shared);
3431                               Driver : constant Variable_Value :=
3432                                          Value_Of
3433                                            (Name                 => No_Name,
3434                                             Attribute_Or_Array_Name =>
3435                                               Name_Driver,
3436                                             In_Package           => Linker,
3437                                             Shared               => Shared);
3438
3439                            begin
3440                               if Driver /= Nil_Variable_Value
3441                                  and then Driver.Value /= Empty_String
3442                               then
3443                                  Project.Config.Shared_Lib_Driver :=
3444                                    File_Name_Type (Driver.Value);
3445                               end if;
3446                            end;
3447                         end if;
3448                      end if;
3449                   end if;
3450                end;
3451             end if;
3452
3453             if Project.Library
3454               and then Project.Qualifier /= Aggregate_Library
3455             then
3456                Debug_Output ("this is a library project file");
3457
3458                Check_Library (Project.Extends, Extends => True);
3459
3460                Imported_Project_List := Project.Imported_Projects;
3461                while Imported_Project_List /= null loop
3462                   Check_Library
3463                     (Imported_Project_List.Project,
3464                      Extends => False);
3465                   Imported_Project_List := Imported_Project_List.Next;
3466                end loop;
3467             end if;
3468          end if;
3469       end if;
3470
3471       --  Check if Linker'Switches or Linker'Default_Switches are declared.
3472       --  Warn if they are declared, as it is a common error to think that
3473       --  library are "linked" with Linker switches.
3474
3475       if Project.Library then
3476          declare
3477             Linker_Package_Id : constant Package_Id :=
3478                                   Util.Value_Of
3479                                     (Name_Linker,
3480                                      Project.Decl.Packages, Shared);
3481             Linker_Package    : Package_Element;
3482             Switches          : Array_Element_Id := No_Array_Element;
3483
3484          begin
3485             if Linker_Package_Id /= No_Package then
3486                Linker_Package := Shared.Packages.Table (Linker_Package_Id);
3487
3488                Switches :=
3489                  Value_Of
3490                    (Name      => Name_Switches,
3491                     In_Arrays => Linker_Package.Decl.Arrays,
3492                     Shared    => Shared);
3493
3494                if Switches = No_Array_Element then
3495                   Switches :=
3496                     Value_Of
3497                       (Name      => Name_Default_Switches,
3498                        In_Arrays => Linker_Package.Decl.Arrays,
3499                        Shared    => Shared);
3500                end if;
3501
3502                if Switches /= No_Array_Element then
3503                   Error_Msg
3504                     (Data.Flags,
3505                      "?Linker switches not taken into account in library " &
3506                      "projects",
3507                      No_Location, Project);
3508                end if;
3509             end if;
3510          end;
3511       end if;
3512
3513       if Project.Extends /= No_Project and then Project.Extends.Library then
3514
3515          --  Remove the library name from Lib_Data_Table
3516
3517          for J in 1 .. Lib_Data_Table.Last loop
3518             if Lib_Data_Table.Table (J).Proj = Project.Extends then
3519                Lib_Data_Table.Table (J) :=
3520                  Lib_Data_Table.Table (Lib_Data_Table.Last);
3521                Lib_Data_Table.Set_Last (Lib_Data_Table.Last - 1);
3522                exit;
3523             end if;
3524          end loop;
3525       end if;
3526
3527       if Project.Library and then not Lib_Name.Default then
3528
3529          --  Check if the same library name is used in an other library project
3530
3531          for J in 1 .. Lib_Data_Table.Last loop
3532             if Lib_Data_Table.Table (J).Name = Project.Library_Name then
3533                Error_Msg_Name_1 := Lib_Data_Table.Table (J).Proj.Name;
3534                Error_Msg
3535                  (Data.Flags,
3536                   "Library name cannot be the same as in project %%",
3537                   Lib_Name.Location, Project);
3538                Project.Library := False;
3539                exit;
3540             end if;
3541          end loop;
3542       end if;
3543
3544       if Project.Library and not Data.In_Aggregate_Lib then
3545
3546          --  Record the library name
3547
3548          Lib_Data_Table.Append
3549            ((Name => Project.Library_Name, Proj => Project));
3550       end if;
3551    end Check_Library_Attributes;
3552
3553    --------------------------
3554    -- Check_Package_Naming --
3555    --------------------------
3556
3557    procedure Check_Package_Naming
3558      (Project : Project_Id;
3559       Data    : in out Tree_Processing_Data)
3560    is
3561       Shared    : constant Shared_Project_Tree_Data_Access := Data.Tree.Shared;
3562       Naming_Id : constant Package_Id :=
3563                     Util.Value_Of
3564                       (Name_Naming, Project.Decl.Packages, Shared);
3565       Naming    : Package_Element;
3566
3567       Ada_Body_Suffix_Loc : Source_Ptr := No_Location;
3568
3569       procedure Check_Naming;
3570       --  Check the validity of the Naming package (suffixes valid, ...)
3571
3572       procedure Check_Common
3573         (Dot_Replacement : in out File_Name_Type;
3574          Casing          : in out Casing_Type;
3575          Casing_Defined  : out Boolean;
3576          Separate_Suffix : in out File_Name_Type;
3577          Sep_Suffix_Loc  : out Source_Ptr);
3578       --  Check attributes common
3579
3580       procedure Process_Exceptions_File_Based
3581         (Lang_Id : Language_Ptr;
3582          Kind    : Source_Kind);
3583       procedure Process_Exceptions_Unit_Based
3584         (Lang_Id : Language_Ptr;
3585          Kind    : Source_Kind);
3586       --  Process the naming exceptions for the two types of languages
3587
3588       procedure Initialize_Naming_Data;
3589       --  Initialize internal naming data for the various languages
3590
3591       ------------------
3592       -- Check_Common --
3593       ------------------
3594
3595       procedure Check_Common
3596         (Dot_Replacement : in out File_Name_Type;
3597          Casing          : in out Casing_Type;
3598          Casing_Defined  : out Boolean;
3599          Separate_Suffix : in out File_Name_Type;
3600          Sep_Suffix_Loc  : out Source_Ptr)
3601       is
3602          Dot_Repl      : constant Variable_Value :=
3603                            Util.Value_Of
3604                              (Name_Dot_Replacement,
3605                               Naming.Decl.Attributes,
3606                               Shared);
3607          Casing_String : constant Variable_Value :=
3608                            Util.Value_Of
3609                              (Name_Casing,
3610                               Naming.Decl.Attributes,
3611                               Shared);
3612          Sep_Suffix    : constant Variable_Value :=
3613                            Util.Value_Of
3614                              (Name_Separate_Suffix,
3615                               Naming.Decl.Attributes,
3616                               Shared);
3617          Dot_Repl_Loc  : Source_Ptr;
3618
3619       begin
3620          Sep_Suffix_Loc := No_Location;
3621
3622          if not Dot_Repl.Default then
3623             pragma Assert
3624               (Dot_Repl.Kind = Single, "Dot_Replacement is not a string");
3625
3626             if Length_Of_Name (Dot_Repl.Value) = 0 then
3627                Error_Msg
3628                  (Data.Flags, "Dot_Replacement cannot be empty",
3629                   Dot_Repl.Location, Project);
3630             end if;
3631
3632             Dot_Replacement := Canonical_Case_File_Name (Dot_Repl.Value);
3633             Dot_Repl_Loc    := Dot_Repl.Location;
3634
3635             declare
3636                Repl : constant String := Get_Name_String (Dot_Replacement);
3637
3638             begin
3639                --  Dot_Replacement cannot
3640                --   - be empty
3641                --   - start or end with an alphanumeric
3642                --   - be a single '_'
3643                --   - start with an '_' followed by an alphanumeric
3644                --   - contain a '.' except if it is "."
3645
3646                if Repl'Length = 0
3647                  or else Is_Alphanumeric (Repl (Repl'First))
3648                  or else Is_Alphanumeric (Repl (Repl'Last))
3649                  or else (Repl (Repl'First) = '_'
3650                            and then
3651                              (Repl'Length = 1
3652                                or else
3653                                  Is_Alphanumeric (Repl (Repl'First + 1))))
3654                  or else (Repl'Length > 1
3655                            and then
3656                              Index (Source => Repl, Pattern => ".") /= 0)
3657                then
3658                   Error_Msg
3659                     (Data.Flags,
3660                      '"' & Repl &
3661                      """ is illegal for Dot_Replacement.",
3662                      Dot_Repl_Loc, Project);
3663                end if;
3664             end;
3665          end if;
3666
3667          if Dot_Replacement /= No_File then
3668             Write_Attr
3669               ("Dot_Replacement", Get_Name_String (Dot_Replacement));
3670          end if;
3671
3672          Casing_Defined := False;
3673
3674          if not Casing_String.Default then
3675             pragma Assert
3676               (Casing_String.Kind = Single, "Casing is not a string");
3677
3678             declare
3679                Casing_Image : constant String :=
3680                                 Get_Name_String (Casing_String.Value);
3681
3682             begin
3683                if Casing_Image'Length = 0 then
3684                   Error_Msg
3685                     (Data.Flags,
3686                      "Casing cannot be an empty string",
3687                      Casing_String.Location, Project);
3688                end if;
3689
3690                Casing := Value (Casing_Image);
3691                Casing_Defined := True;
3692
3693             exception
3694                when Constraint_Error =>
3695                   Name_Len := Casing_Image'Length;
3696                   Name_Buffer (1 .. Name_Len) := Casing_Image;
3697                   Err_Vars.Error_Msg_Name_1 := Name_Find;
3698                   Error_Msg
3699                     (Data.Flags,
3700                      "%% is not a correct Casing",
3701                      Casing_String.Location, Project);
3702             end;
3703          end if;
3704
3705          Write_Attr ("Casing", Image (Casing));
3706
3707          if not Sep_Suffix.Default then
3708             if Length_Of_Name (Sep_Suffix.Value) = 0 then
3709                Error_Msg
3710                  (Data.Flags,
3711                   "Separate_Suffix cannot be empty",
3712                   Sep_Suffix.Location, Project);
3713
3714             else
3715                Separate_Suffix := Canonical_Case_File_Name (Sep_Suffix.Value);
3716                Sep_Suffix_Loc  := Sep_Suffix.Location;
3717
3718                Check_Illegal_Suffix
3719                  (Project, Separate_Suffix,
3720                   Dot_Replacement, "Separate_Suffix", Sep_Suffix.Location,
3721                   Data);
3722             end if;
3723          end if;
3724
3725          if Separate_Suffix /= No_File then
3726             Write_Attr
3727               ("Separate_Suffix", Get_Name_String (Separate_Suffix));
3728          end if;
3729       end Check_Common;
3730
3731       -----------------------------------
3732       -- Process_Exceptions_File_Based --
3733       -----------------------------------
3734
3735       procedure Process_Exceptions_File_Based
3736         (Lang_Id : Language_Ptr;
3737          Kind    : Source_Kind)
3738       is
3739          Lang           : constant Name_Id := Lang_Id.Name;
3740          Exceptions     : Array_Element_Id;
3741          Exception_List : Variable_Value;
3742          Element_Id     : String_List_Id;
3743          Element        : String_Element;
3744          File_Name      : File_Name_Type;
3745          Source         : Source_Id;
3746
3747       begin
3748          case Kind is
3749             when Impl | Sep =>
3750                Exceptions :=
3751                  Value_Of
3752                    (Name_Implementation_Exceptions,
3753                     In_Arrays => Naming.Decl.Arrays,
3754                     Shared    => Shared);
3755
3756             when Spec =>
3757                Exceptions :=
3758                  Value_Of
3759                    (Name_Specification_Exceptions,
3760                     In_Arrays => Naming.Decl.Arrays,
3761                     Shared    => Shared);
3762          end case;
3763
3764          Exception_List :=
3765            Value_Of
3766              (Index    => Lang,
3767               In_Array => Exceptions,
3768               Shared   => Shared);
3769
3770          if Exception_List /= Nil_Variable_Value then
3771             Element_Id := Exception_List.Values;
3772             while Element_Id /= Nil_String loop
3773                Element   := Shared.String_Elements.Table (Element_Id);
3774                File_Name := Canonical_Case_File_Name (Element.Value);
3775
3776                Source :=
3777                  Source_Files_Htable.Get
3778                    (Data.Tree.Source_Files_HT, File_Name);
3779                while Source /= No_Source
3780                  and then Source.Project /= Project
3781                loop
3782                   Source := Source.Next_With_File_Name;
3783                end loop;
3784
3785                if Source = No_Source then
3786                   Add_Source
3787                     (Id               => Source,
3788                      Data             => Data,
3789                      Project          => Project,
3790                      Source_Dir_Rank  => 0,
3791                      Lang_Id          => Lang_Id,
3792                      Kind             => Kind,
3793                      File_Name        => File_Name,
3794                      Display_File     => File_Name_Type (Element.Value),
3795                      Naming_Exception => Yes,
3796                      Location         => Element.Location);
3797
3798                else
3799                   --  Check if the file name is already recorded for another
3800                   --  language or another kind.
3801
3802                   if Source.Language /= Lang_Id then
3803                      Error_Msg
3804                        (Data.Flags,
3805                         "the same file cannot be a source of two languages",
3806                         Element.Location, Project);
3807
3808                   elsif Source.Kind /= Kind then
3809                      Error_Msg
3810                        (Data.Flags,
3811                         "the same file cannot be a source and a template",
3812                         Element.Location, Project);
3813                   end if;
3814
3815                   --  If the file is already recorded for the same
3816                   --  language and the same kind, it means that the file
3817                   --  name appears several times in the *_Exceptions
3818                   --  attribute; so there is nothing to do.
3819                end if;
3820
3821                Element_Id := Element.Next;
3822             end loop;
3823          end if;
3824       end Process_Exceptions_File_Based;
3825
3826       -----------------------------------
3827       -- Process_Exceptions_Unit_Based --
3828       -----------------------------------
3829
3830       procedure Process_Exceptions_Unit_Based
3831         (Lang_Id : Language_Ptr;
3832          Kind    : Source_Kind)
3833       is
3834          Exceptions : Array_Element_Id;
3835          Element    : Array_Element;
3836          Unit       : Name_Id;
3837          Index      : Int;
3838          File_Name  : File_Name_Type;
3839          Source     : Source_Id;
3840
3841          Naming_Exception : Naming_Exception_Type;
3842
3843       begin
3844          case Kind is
3845             when Impl | Sep =>
3846                Exceptions :=
3847                  Value_Of
3848                    (Name_Body,
3849                     In_Arrays => Naming.Decl.Arrays,
3850                     Shared    => Shared);
3851
3852                if Exceptions = No_Array_Element then
3853                   Exceptions :=
3854                     Value_Of
3855                       (Name_Implementation,
3856                        In_Arrays => Naming.Decl.Arrays,
3857                        Shared    => Shared);
3858                end if;
3859
3860             when Spec =>
3861                Exceptions :=
3862                  Value_Of
3863                    (Name_Spec,
3864                     In_Arrays => Naming.Decl.Arrays,
3865                     Shared    => Shared);
3866
3867                if Exceptions = No_Array_Element then
3868                   Exceptions :=
3869                     Value_Of
3870                       (Name_Specification,
3871                        In_Arrays => Naming.Decl.Arrays,
3872                        Shared    => Shared);
3873                end if;
3874          end case;
3875
3876          while Exceptions /= No_Array_Element loop
3877             Element   := Shared.Array_Elements.Table (Exceptions);
3878
3879             if Element.Restricted then
3880                Naming_Exception := Inherited;
3881             else
3882                Naming_Exception := Yes;
3883             end if;
3884
3885             File_Name := Canonical_Case_File_Name (Element.Value.Value);
3886
3887             Get_Name_String (Element.Index);
3888             To_Lower (Name_Buffer (1 .. Name_Len));
3889             Index := Element.Value.Index;
3890
3891             --  Check if it is a valid unit name
3892
3893             Get_Name_String (Element.Index);
3894             Check_Unit_Name (Name_Buffer (1 .. Name_Len), Unit);
3895
3896             if Unit = No_Name then
3897                Err_Vars.Error_Msg_Name_1 := Element.Index;
3898                Error_Msg
3899                  (Data.Flags,
3900                   "%% is not a valid unit name.",
3901                   Element.Value.Location, Project);
3902             end if;
3903
3904             if Unit /= No_Name then
3905                Add_Source
3906                  (Id               => Source,
3907                   Data             => Data,
3908                   Project          => Project,
3909                   Source_Dir_Rank  => 0,
3910                   Lang_Id          => Lang_Id,
3911                   Kind             => Kind,
3912                   File_Name        => File_Name,
3913                   Display_File     => File_Name_Type (Element.Value.Value),
3914                   Unit             => Unit,
3915                   Index            => Index,
3916                   Location         => Element.Value.Location,
3917                   Naming_Exception => Naming_Exception);
3918             end if;
3919
3920             Exceptions := Element.Next;
3921          end loop;
3922       end Process_Exceptions_Unit_Based;
3923
3924       ------------------
3925       -- Check_Naming --
3926       ------------------
3927
3928       procedure Check_Naming is
3929          Dot_Replacement : File_Name_Type :=
3930                              File_Name_Type
3931                                (First_Name_Id + Character'Pos ('-'));
3932          Separate_Suffix : File_Name_Type := No_File;
3933          Casing          : Casing_Type    := All_Lower_Case;
3934          Casing_Defined  : Boolean;
3935          Lang_Id         : Language_Ptr;
3936          Sep_Suffix_Loc  : Source_Ptr;
3937          Suffix          : Variable_Value;
3938          Lang            : Name_Id;
3939
3940       begin
3941          Check_Common
3942            (Dot_Replacement => Dot_Replacement,
3943             Casing          => Casing,
3944             Casing_Defined  => Casing_Defined,
3945             Separate_Suffix => Separate_Suffix,
3946             Sep_Suffix_Loc  => Sep_Suffix_Loc);
3947
3948          --  For all unit based languages, if any, set the specified value
3949          --  of Dot_Replacement, Casing and/or Separate_Suffix. Do not
3950          --  systematically overwrite, since the defaults come from the
3951          --  configuration file.
3952
3953          if Dot_Replacement /= No_File
3954            or else Casing_Defined
3955            or else Separate_Suffix /= No_File
3956          then
3957             Lang_Id := Project.Languages;
3958             while Lang_Id /= No_Language_Index loop
3959                if Lang_Id.Config.Kind = Unit_Based then
3960                   if Dot_Replacement /= No_File then
3961                      Lang_Id.Config.Naming_Data.Dot_Replacement :=
3962                          Dot_Replacement;
3963                   end if;
3964
3965                   if Casing_Defined then
3966                      Lang_Id.Config.Naming_Data.Casing := Casing;
3967                   end if;
3968                end if;
3969
3970                Lang_Id := Lang_Id.Next;
3971             end loop;
3972          end if;
3973
3974          --  Next, get the spec and body suffixes
3975
3976          Lang_Id := Project.Languages;
3977          while Lang_Id /= No_Language_Index loop
3978             Lang := Lang_Id.Name;
3979
3980             --  Spec_Suffix
3981
3982             Suffix := Value_Of
3983               (Name                    => Lang,
3984                Attribute_Or_Array_Name => Name_Spec_Suffix,
3985                In_Package              => Naming_Id,
3986                Shared                  => Shared);
3987
3988             if Suffix = Nil_Variable_Value then
3989                Suffix := Value_Of
3990                  (Name                    => Lang,
3991                   Attribute_Or_Array_Name => Name_Specification_Suffix,
3992                   In_Package              => Naming_Id,
3993                   Shared                  => Shared);
3994             end if;
3995
3996             if Suffix /= Nil_Variable_Value then
3997                Lang_Id.Config.Naming_Data.Spec_Suffix :=
3998                    File_Name_Type (Suffix.Value);
3999
4000                Check_Illegal_Suffix
4001                  (Project,
4002                   Lang_Id.Config.Naming_Data.Spec_Suffix,
4003                   Lang_Id.Config.Naming_Data.Dot_Replacement,
4004                   "Spec_Suffix", Suffix.Location, Data);
4005
4006                Write_Attr
4007                  ("Spec_Suffix",
4008                   Get_Name_String (Lang_Id.Config.Naming_Data.Spec_Suffix));
4009             end if;
4010
4011             --  Body_Suffix
4012
4013             Suffix :=
4014               Value_Of
4015                 (Name                    => Lang,
4016                  Attribute_Or_Array_Name => Name_Body_Suffix,
4017                  In_Package              => Naming_Id,
4018                  Shared                  => Shared);
4019
4020             if Suffix = Nil_Variable_Value then
4021                Suffix :=
4022                  Value_Of
4023                    (Name                    => Lang,
4024                     Attribute_Or_Array_Name => Name_Implementation_Suffix,
4025                     In_Package              => Naming_Id,
4026                     Shared                  => Shared);
4027             end if;
4028
4029             if Suffix /= Nil_Variable_Value then
4030                Lang_Id.Config.Naming_Data.Body_Suffix :=
4031                  File_Name_Type (Suffix.Value);
4032
4033                --  The default value of separate suffix should be the same as
4034                --  the body suffix, so we need to compute that first.
4035
4036                if Separate_Suffix = No_File then
4037                   Lang_Id.Config.Naming_Data.Separate_Suffix :=
4038                     Lang_Id.Config.Naming_Data.Body_Suffix;
4039                   Write_Attr
4040                     ("Sep_Suffix",
4041                      Get_Name_String
4042                        (Lang_Id.Config.Naming_Data.Separate_Suffix));
4043                else
4044                   Lang_Id.Config.Naming_Data.Separate_Suffix :=
4045                     Separate_Suffix;
4046                end if;
4047
4048                Check_Illegal_Suffix
4049                  (Project,
4050                   Lang_Id.Config.Naming_Data.Body_Suffix,
4051                   Lang_Id.Config.Naming_Data.Dot_Replacement,
4052                   "Body_Suffix", Suffix.Location, Data);
4053
4054                Write_Attr
4055                  ("Body_Suffix",
4056                   Get_Name_String (Lang_Id.Config.Naming_Data.Body_Suffix));
4057
4058             elsif Separate_Suffix /= No_File then
4059                Lang_Id.Config.Naming_Data.Separate_Suffix := Separate_Suffix;
4060             end if;
4061
4062             --  Spec_Suffix cannot be equal to Body_Suffix or Separate_Suffix,
4063             --  since that would cause a clear ambiguity. Note that we do allow
4064             --  a Spec_Suffix to have the same termination as one of these,
4065             --  which causes a potential ambiguity, but we resolve that by
4066             --  matching the longest possible suffix.
4067
4068             if Lang_Id.Config.Naming_Data.Spec_Suffix /= No_File
4069               and then Lang_Id.Config.Naming_Data.Spec_Suffix =
4070                        Lang_Id.Config.Naming_Data.Body_Suffix
4071             then
4072                Error_Msg
4073                  (Data.Flags,
4074                   "Body_Suffix ("""
4075                   & Get_Name_String (Lang_Id.Config.Naming_Data.Body_Suffix)
4076                   & """) cannot be the same as Spec_Suffix.",
4077                   Ada_Body_Suffix_Loc, Project);
4078             end if;
4079
4080             if Lang_Id.Config.Naming_Data.Body_Suffix /=
4081                Lang_Id.Config.Naming_Data.Separate_Suffix
4082               and then Lang_Id.Config.Naming_Data.Spec_Suffix =
4083                        Lang_Id.Config.Naming_Data.Separate_Suffix
4084             then
4085                Error_Msg
4086                  (Data.Flags,
4087                   "Separate_Suffix ("""
4088                   & Get_Name_String
4089                     (Lang_Id.Config.Naming_Data.Separate_Suffix)
4090                   & """) cannot be the same as Spec_Suffix.",
4091                   Sep_Suffix_Loc, Project);
4092             end if;
4093
4094             Lang_Id := Lang_Id.Next;
4095          end loop;
4096
4097          --  Get the naming exceptions for all languages
4098
4099          for Kind in Spec_Or_Body loop
4100             Lang_Id := Project.Languages;
4101             while Lang_Id /= No_Language_Index loop
4102                case Lang_Id.Config.Kind is
4103                   when File_Based =>
4104                      Process_Exceptions_File_Based (Lang_Id, Kind);
4105
4106                   when Unit_Based =>
4107                      Process_Exceptions_Unit_Based (Lang_Id, Kind);
4108                end case;
4109
4110                Lang_Id := Lang_Id.Next;
4111             end loop;
4112          end loop;
4113       end Check_Naming;
4114
4115       ----------------------------
4116       -- Initialize_Naming_Data --
4117       ----------------------------
4118
4119       procedure Initialize_Naming_Data is
4120          Specs : Array_Element_Id :=
4121                    Util.Value_Of
4122                      (Name_Spec_Suffix,
4123                       Naming.Decl.Arrays,
4124                       Shared);
4125
4126          Impls : Array_Element_Id :=
4127                    Util.Value_Of
4128                      (Name_Body_Suffix,
4129                       Naming.Decl.Arrays,
4130                       Shared);
4131
4132          Lang      : Language_Ptr;
4133          Lang_Name : Name_Id;
4134          Value     : Variable_Value;
4135          Extended  : Project_Id;
4136
4137       begin
4138          --  At this stage, the project already contains the default extensions
4139          --  for the various languages. We now merge those suffixes read in the
4140          --  user project, and they override the default.
4141
4142          while Specs /= No_Array_Element loop
4143             Lang_Name := Shared.Array_Elements.Table (Specs).Index;
4144             Lang :=
4145               Get_Language_From_Name
4146                 (Project, Name => Get_Name_String (Lang_Name));
4147
4148             --  An extending project inherits its parent projects' languages
4149             --  so if needed we should create entries for those languages
4150
4151             if Lang = null  then
4152                Extended := Project.Extends;
4153                while Extended /= null loop
4154                   Lang := Get_Language_From_Name
4155                     (Extended, Name => Get_Name_String (Lang_Name));
4156                   exit when Lang /= null;
4157
4158                   Extended := Extended.Extends;
4159                end loop;
4160
4161                if Lang /= null then
4162                   Lang := new Language_Data'(Lang.all);
4163                   Lang.First_Source := null;
4164                   Lang.Next := Project.Languages;
4165                   Project.Languages := Lang;
4166                end if;
4167             end if;
4168
4169             --  If language was not found in project or the projects it extends
4170
4171             if Lang = null then
4172                Debug_Output
4173                  ("ignoring spec naming data (lang. not in project): ",
4174                   Lang_Name);
4175
4176             else
4177                Value := Shared.Array_Elements.Table (Specs).Value;
4178
4179                if Value.Kind = Single then
4180                   Lang.Config.Naming_Data.Spec_Suffix :=
4181                     Canonical_Case_File_Name (Value.Value);
4182                end if;
4183             end if;
4184
4185             Specs := Shared.Array_Elements.Table (Specs).Next;
4186          end loop;
4187
4188          while Impls /= No_Array_Element loop
4189             Lang_Name := Shared.Array_Elements.Table (Impls).Index;
4190             Lang :=
4191               Get_Language_From_Name
4192                 (Project, Name => Get_Name_String (Lang_Name));
4193
4194             if Lang = null then
4195                Debug_Output
4196                  ("ignoring impl naming data (lang. not in project): ",
4197                   Lang_Name);
4198             else
4199                Value := Shared.Array_Elements.Table (Impls).Value;
4200
4201                if Lang.Name = Name_Ada then
4202                   Ada_Body_Suffix_Loc := Value.Location;
4203                end if;
4204
4205                if Value.Kind = Single then
4206                   Lang.Config.Naming_Data.Body_Suffix :=
4207                     Canonical_Case_File_Name (Value.Value);
4208                end if;
4209             end if;
4210
4211             Impls := Shared.Array_Elements.Table (Impls).Next;
4212          end loop;
4213       end Initialize_Naming_Data;
4214
4215    --  Start of processing for Check_Naming_Schemes
4216
4217    begin
4218       --  No Naming package or parsing a configuration file? nothing to do
4219
4220       if Naming_Id /= No_Package
4221         and then Project.Qualifier /= Configuration
4222       then
4223          Naming := Shared.Packages.Table (Naming_Id);
4224          Debug_Increase_Indent ("checking package Naming for ", Project.Name);
4225          Initialize_Naming_Data;
4226          Check_Naming;
4227          Debug_Decrease_Indent ("done checking package naming");
4228       end if;
4229    end Check_Package_Naming;
4230
4231    ---------------------------------
4232    -- Check_Programming_Languages --
4233    ---------------------------------
4234
4235    procedure Check_Programming_Languages
4236      (Project : Project_Id;
4237       Data    : in out Tree_Processing_Data)
4238    is
4239       Shared : constant Shared_Project_Tree_Data_Access := Data.Tree.Shared;
4240
4241       Languages   : Variable_Value := Nil_Variable_Value;
4242       Def_Lang    : Variable_Value := Nil_Variable_Value;
4243       Def_Lang_Id : Name_Id;
4244
4245       procedure Add_Language (Name, Display_Name : Name_Id);
4246       --  Add a new language to the list of languages for the project.
4247       --  Nothing is done if the language has already been defined
4248
4249       ------------------
4250       -- Add_Language --
4251       ------------------
4252
4253       procedure Add_Language (Name, Display_Name : Name_Id) is
4254          Lang : Language_Ptr;
4255
4256       begin
4257          Lang := Project.Languages;
4258          while Lang /= No_Language_Index loop
4259             if Name = Lang.Name then
4260                return;
4261             end if;
4262
4263             Lang := Lang.Next;
4264          end loop;
4265
4266          Lang              := new Language_Data'(No_Language_Data);
4267          Lang.Next         := Project.Languages;
4268          Project.Languages := Lang;
4269          Lang.Name         := Name;
4270          Lang.Display_Name := Display_Name;
4271       end Add_Language;
4272
4273    --  Start of processing for Check_Programming_Languages
4274
4275    begin
4276       Project.Languages := null;
4277       Languages :=
4278         Prj.Util.Value_Of (Name_Languages, Project.Decl.Attributes, Shared);
4279       Def_Lang :=
4280         Prj.Util.Value_Of
4281           (Name_Default_Language, Project.Decl.Attributes, Shared);
4282
4283       if Project.Source_Dirs /= Nil_String then
4284
4285          --  Check if languages are specified in this project
4286
4287          if Languages.Default then
4288
4289             --  Fail if there is no default language defined
4290
4291             if Def_Lang.Default then
4292                Error_Msg
4293                  (Data.Flags,
4294                   "no languages defined for this project",
4295                   Project.Location, Project);
4296                Def_Lang_Id := No_Name;
4297
4298             else
4299                Get_Name_String (Def_Lang.Value);
4300                To_Lower (Name_Buffer (1 .. Name_Len));
4301                Def_Lang_Id := Name_Find;
4302             end if;
4303
4304             if Def_Lang_Id /= No_Name then
4305                Get_Name_String (Def_Lang_Id);
4306                Name_Buffer (1) := GNAT.Case_Util.To_Upper (Name_Buffer (1));
4307                Add_Language
4308                  (Name         => Def_Lang_Id,
4309                   Display_Name => Name_Find);
4310             end if;
4311
4312          else
4313             declare
4314                Current : String_List_Id := Languages.Values;
4315                Element : String_Element;
4316
4317             begin
4318                --  If there are no languages declared, there are no sources
4319
4320                if Current = Nil_String then
4321                   Project.Source_Dirs := Nil_String;
4322
4323                   if Project.Qualifier = Standard then
4324                      Error_Msg
4325                        (Data.Flags,
4326                         "a standard project must have at least one language",
4327                         Languages.Location, Project);
4328                   end if;
4329
4330                else
4331                   --  Look through all the languages specified in attribute
4332                   --  Languages.
4333
4334                   while Current /= Nil_String loop
4335                      Element := Shared.String_Elements.Table (Current);
4336                      Get_Name_String (Element.Value);
4337                      To_Lower (Name_Buffer (1 .. Name_Len));
4338
4339                      Add_Language
4340                        (Name         => Name_Find,
4341                         Display_Name => Element.Value);
4342
4343                      Current := Element.Next;
4344                   end loop;
4345                end if;
4346             end;
4347          end if;
4348       end if;
4349    end Check_Programming_Languages;
4350
4351    -------------------------------
4352    -- Check_Stand_Alone_Library --
4353    -------------------------------
4354
4355    procedure Check_Stand_Alone_Library
4356      (Project : Project_Id;
4357       Data    : in out Tree_Processing_Data)
4358    is
4359       Shared : constant Shared_Project_Tree_Data_Access := Data.Tree.Shared;
4360
4361       Lib_Name            : constant Prj.Variable_Value :=
4362                               Prj.Util.Value_Of
4363                                (Snames.Name_Library_Name,
4364                                 Project.Decl.Attributes,
4365                                 Shared);
4366
4367       Lib_Standalone      : constant Prj.Variable_Value :=
4368                               Prj.Util.Value_Of
4369                                 (Snames.Name_Library_Standalone,
4370                                  Project.Decl.Attributes,
4371                                  Shared);
4372
4373       Lib_Auto_Init       : constant Prj.Variable_Value :=
4374                               Prj.Util.Value_Of
4375                                 (Snames.Name_Library_Auto_Init,
4376                                  Project.Decl.Attributes,
4377                                  Shared);
4378
4379       Lib_Src_Dir         : constant Prj.Variable_Value :=
4380                               Prj.Util.Value_Of
4381                                 (Snames.Name_Library_Src_Dir,
4382                                  Project.Decl.Attributes,
4383                                  Shared);
4384
4385       Lib_Symbol_File     : constant Prj.Variable_Value :=
4386                               Prj.Util.Value_Of
4387                                 (Snames.Name_Library_Symbol_File,
4388                                  Project.Decl.Attributes,
4389                                  Shared);
4390
4391       Lib_Symbol_Policy   : constant Prj.Variable_Value :=
4392                               Prj.Util.Value_Of
4393                                 (Snames.Name_Library_Symbol_Policy,
4394                                  Project.Decl.Attributes,
4395                                  Shared);
4396
4397       Lib_Ref_Symbol_File : constant Prj.Variable_Value :=
4398                               Prj.Util.Value_Of
4399                                 (Snames.Name_Library_Reference_Symbol_File,
4400                                  Project.Decl.Attributes,
4401                                  Shared);
4402
4403       Auto_Init_Supported : Boolean;
4404       OK                  : Boolean := True;
4405
4406    begin
4407       Auto_Init_Supported := Project.Config.Auto_Init_Supported;
4408
4409       --  It is a stand-alone library project file if there is at least one
4410       --  unit in the declared or inherited interface.
4411
4412       if Project.Lib_Interface_ALIs = Nil_String then
4413          if not Lib_Standalone.Default
4414            and then Get_Name_String (Lib_Standalone.Value) /= "no"
4415          then
4416             Error_Msg
4417               (Data.Flags,
4418                "Library_Standalone valid only if Library_Interface is set",
4419                Lib_Standalone.Location, Project);
4420          end if;
4421
4422       else
4423          if Project.Standalone_Library = No then
4424             Project.Standalone_Library := Standard;
4425          end if;
4426
4427          --  The name of a stand-alone library needs to have the syntax of an
4428          --  Ada identifier.
4429
4430          declare
4431             Name : constant String := Get_Name_String (Project.Library_Name);
4432             OK   : Boolean         := Is_Letter (Name (Name'First));
4433
4434             Underline : Boolean := False;
4435
4436          begin
4437             for J in Name'First + 1 .. Name'Last loop
4438                exit when not OK;
4439
4440                if Is_Alphanumeric (Name (J)) then
4441                   Underline := False;
4442
4443                elsif Name (J) = '_' then
4444                   if Underline then
4445                      OK := False;
4446                   else
4447                      Underline := True;
4448                   end if;
4449
4450                else
4451                   OK := False;
4452                end if;
4453             end loop;
4454
4455             OK := OK and not Underline;
4456
4457             if not OK then
4458                Error_Msg
4459                  (Data.Flags,
4460                   "Incorrect library name for a Stand-Alone Library",
4461                   Lib_Name.Location, Project);
4462                return;
4463             end if;
4464          end;
4465
4466          if Lib_Standalone.Default then
4467             Project.Standalone_Library := Standard;
4468
4469          else
4470             Get_Name_String (Lib_Standalone.Value);
4471             To_Lower (Name_Buffer (1 .. Name_Len));
4472
4473             if Name_Buffer (1 .. Name_Len) = "standard" then
4474                Project.Standalone_Library := Standard;
4475
4476             elsif Name_Buffer (1 .. Name_Len) = "encapsulated" then
4477                Project.Standalone_Library := Encapsulated;
4478
4479             elsif Name_Buffer (1 .. Name_Len) = "no" then
4480                Project.Standalone_Library := No;
4481                Error_Msg
4482                  (Data.Flags,
4483                   "wrong value for Library_Standalone "
4484                   & "when Library_Interface defined",
4485                   Lib_Standalone.Location, Project);
4486
4487             else
4488                Error_Msg
4489                  (Data.Flags,
4490                   "invalid value for attribute Library_Standalone",
4491                   Lib_Standalone.Location, Project);
4492             end if;
4493          end if;
4494
4495          --  Check value of attribute Library_Auto_Init and set
4496          --  Lib_Auto_Init accordingly.
4497
4498          if Lib_Auto_Init.Default then
4499
4500             --  If no attribute Library_Auto_Init is declared, then set auto
4501             --  init only if it is supported.
4502
4503             Project.Lib_Auto_Init := Auto_Init_Supported;
4504
4505          else
4506             Get_Name_String (Lib_Auto_Init.Value);
4507             To_Lower (Name_Buffer (1 .. Name_Len));
4508
4509             if Name_Buffer (1 .. Name_Len) = "false" then
4510                Project.Lib_Auto_Init := False;
4511
4512             elsif Name_Buffer (1 .. Name_Len) = "true" then
4513                if Auto_Init_Supported then
4514                   Project.Lib_Auto_Init := True;
4515
4516                else
4517                   --  Library_Auto_Init cannot be "true" if auto init is not
4518                   --  supported.
4519
4520                   Error_Msg
4521                     (Data.Flags,
4522                      "library auto init not supported " &
4523                      "on this platform",
4524                      Lib_Auto_Init.Location, Project);
4525                end if;
4526
4527             else
4528                Error_Msg
4529                  (Data.Flags,
4530                   "invalid value for attribute Library_Auto_Init",
4531                   Lib_Auto_Init.Location, Project);
4532             end if;
4533          end if;
4534
4535          --  If attribute Library_Src_Dir is defined and not the empty string,
4536          --  check if the directory exist and is not the object directory or
4537          --  one of the source directories. This is the directory where copies
4538          --  of the interface sources will be copied. Note that this directory
4539          --  may be the library directory.
4540
4541          if Lib_Src_Dir.Value /= Empty_String then
4542             declare
4543                Dir_Id     : constant File_Name_Type :=
4544                               File_Name_Type (Lib_Src_Dir.Value);
4545                Dir_Exists : Boolean;
4546
4547             begin
4548                Locate_Directory
4549                  (Project,
4550                   Dir_Id,
4551                   Path             => Project.Library_Src_Dir,
4552                   Dir_Exists       => Dir_Exists,
4553                   Data             => Data,
4554                   Must_Exist       => False,
4555                   Create           => "library source copy",
4556                   Location         => Lib_Src_Dir.Location,
4557                   Externally_Built => Project.Externally_Built);
4558
4559                --  If directory does not exist, report an error
4560
4561                if not Dir_Exists then
4562
4563                   --  Get the absolute name of the library directory that does
4564                   --  not exist, to report an error.
4565
4566                   Err_Vars.Error_Msg_File_1 :=
4567                     File_Name_Type (Project.Library_Src_Dir.Display_Name);
4568                   Error_Msg
4569                     (Data.Flags,
4570                      "Directory { does not exist",
4571                      Lib_Src_Dir.Location, Project);
4572
4573                   --  Report error if it is the same as the object directory
4574
4575                elsif Project.Library_Src_Dir = Project.Object_Directory then
4576                   Error_Msg
4577                     (Data.Flags,
4578                      "directory to copy interfaces cannot be " &
4579                      "the object directory",
4580                      Lib_Src_Dir.Location, Project);
4581                   Project.Library_Src_Dir := No_Path_Information;
4582
4583                else
4584                   declare
4585                      Src_Dirs : String_List_Id;
4586                      Src_Dir  : String_Element;
4587                      Pid      : Project_List;
4588
4589                   begin
4590                      --  Interface copy directory cannot be one of the source
4591                      --  directory of the current project.
4592
4593                      Src_Dirs := Project.Source_Dirs;
4594                      while Src_Dirs /= Nil_String loop
4595                         Src_Dir := Shared.String_Elements.Table (Src_Dirs);
4596
4597                         --  Report error if it is one of the source directories
4598
4599                         if Project.Library_Src_Dir.Name =
4600                              Path_Name_Type (Src_Dir.Value)
4601                         then
4602                            Error_Msg
4603                              (Data.Flags,
4604                               "directory to copy interfaces cannot " &
4605                               "be one of the source directories",
4606                               Lib_Src_Dir.Location, Project);
4607                            Project.Library_Src_Dir := No_Path_Information;
4608                            exit;
4609                         end if;
4610
4611                         Src_Dirs := Src_Dir.Next;
4612                      end loop;
4613
4614                      if Project.Library_Src_Dir /= No_Path_Information then
4615
4616                         --  It cannot be a source directory of any other
4617                         --  project either.
4618
4619                         Pid := Data.Tree.Projects;
4620                         Project_Loop : loop
4621                            exit Project_Loop when Pid = null;
4622
4623                            Src_Dirs := Pid.Project.Source_Dirs;
4624                            Dir_Loop : while Src_Dirs /= Nil_String loop
4625                               Src_Dir :=
4626                                 Shared.String_Elements.Table (Src_Dirs);
4627
4628                               --  Report error if it is one of the source
4629                               --  directories.
4630
4631                               if Project.Library_Src_Dir.Name =
4632                                 Path_Name_Type (Src_Dir.Value)
4633                               then
4634                                  Error_Msg_File_1 :=
4635                                    File_Name_Type (Src_Dir.Value);
4636                                  Error_Msg_Name_1 := Pid.Project.Name;
4637                                  Error_Msg
4638                                    (Data.Flags,
4639                                     "directory to copy interfaces cannot " &
4640                                     "be the same as source directory { of " &
4641                                     "project %%",
4642                                     Lib_Src_Dir.Location, Project);
4643                                  Project.Library_Src_Dir :=
4644                                    No_Path_Information;
4645                                  exit Project_Loop;
4646                               end if;
4647
4648                               Src_Dirs := Src_Dir.Next;
4649                            end loop Dir_Loop;
4650
4651                            Pid := Pid.Next;
4652                         end loop Project_Loop;
4653                      end if;
4654                   end;
4655
4656                   --  In high verbosity, if there is a valid Library_Src_Dir,
4657                   --  display its path name.
4658
4659                   if Project.Library_Src_Dir /= No_Path_Information
4660                     and then Current_Verbosity = High
4661                   then
4662                      Write_Attr
4663                        ("Directory to copy interfaces",
4664                         Get_Name_String (Project.Library_Src_Dir.Name));
4665                   end if;
4666                end if;
4667             end;
4668          end if;
4669
4670          --  Check the symbol related attributes
4671
4672          --  First, the symbol policy
4673
4674          if not Lib_Symbol_Policy.Default then
4675             declare
4676                Value : constant String :=
4677                          To_Lower
4678                            (Get_Name_String (Lib_Symbol_Policy.Value));
4679
4680             begin
4681                --  Symbol policy must have one of a limited number of values
4682
4683                if Value = "autonomous" or else Value = "default" then
4684                   Project.Symbol_Data.Symbol_Policy := Autonomous;
4685
4686                elsif Value = "compliant" then
4687                   Project.Symbol_Data.Symbol_Policy := Compliant;
4688
4689                elsif Value = "controlled" then
4690                   Project.Symbol_Data.Symbol_Policy := Controlled;
4691
4692                elsif Value = "restricted" then
4693                   Project.Symbol_Data.Symbol_Policy := Restricted;
4694
4695                elsif Value = "direct" then
4696                   Project.Symbol_Data.Symbol_Policy := Direct;
4697
4698                else
4699                   Error_Msg
4700                     (Data.Flags,
4701                      "illegal value for Library_Symbol_Policy",
4702                      Lib_Symbol_Policy.Location, Project);
4703                end if;
4704             end;
4705          end if;
4706
4707          --  If attribute Library_Symbol_File is not specified, symbol policy
4708          --  cannot be Restricted.
4709
4710          if Lib_Symbol_File.Default then
4711             if Project.Symbol_Data.Symbol_Policy = Restricted then
4712                Error_Msg
4713                  (Data.Flags,
4714                   "Library_Symbol_File needs to be defined when " &
4715                   "symbol policy is Restricted",
4716                   Lib_Symbol_Policy.Location, Project);
4717             end if;
4718
4719          else
4720             --  Library_Symbol_File is defined
4721
4722             Project.Symbol_Data.Symbol_File :=
4723               Path_Name_Type (Lib_Symbol_File.Value);
4724
4725             Get_Name_String (Lib_Symbol_File.Value);
4726
4727             if Name_Len = 0 then
4728                Error_Msg
4729                  (Data.Flags,
4730                   "symbol file name cannot be an empty string",
4731                   Lib_Symbol_File.Location, Project);
4732
4733             else
4734                OK := not Is_Absolute_Path (Name_Buffer (1 .. Name_Len));
4735
4736                if OK then
4737                   for J in 1 .. Name_Len loop
4738                      if Name_Buffer (J) = '/'
4739                        or else Name_Buffer (J) = Directory_Separator
4740                      then
4741                         OK := False;
4742                         exit;
4743                      end if;
4744                   end loop;
4745                end if;
4746
4747                if not OK then
4748                   Error_Msg_File_1 := File_Name_Type (Lib_Symbol_File.Value);
4749                   Error_Msg
4750                     (Data.Flags,
4751                      "symbol file name { is illegal. " &
4752                      "Name cannot include directory info.",
4753                      Lib_Symbol_File.Location, Project);
4754                end if;
4755             end if;
4756          end if;
4757
4758          --  If attribute Library_Reference_Symbol_File is not defined,
4759          --  symbol policy cannot be Compliant or Controlled.
4760
4761          if Lib_Ref_Symbol_File.Default then
4762             if Project.Symbol_Data.Symbol_Policy = Compliant
4763               or else Project.Symbol_Data.Symbol_Policy = Controlled
4764             then
4765                Error_Msg
4766                  (Data.Flags,
4767                   "a reference symbol file needs to be defined",
4768                   Lib_Symbol_Policy.Location, Project);
4769             end if;
4770
4771          else
4772             --  Library_Reference_Symbol_File is defined, check file exists
4773
4774             Project.Symbol_Data.Reference :=
4775               Path_Name_Type (Lib_Ref_Symbol_File.Value);
4776
4777             Get_Name_String (Lib_Ref_Symbol_File.Value);
4778
4779             if Name_Len = 0 then
4780                Error_Msg
4781                  (Data.Flags,
4782                   "reference symbol file name cannot be an empty string",
4783                   Lib_Symbol_File.Location, Project);
4784
4785             else
4786                if not Is_Absolute_Path (Name_Buffer (1 .. Name_Len)) then
4787                   Name_Len := 0;
4788                   Add_Str_To_Name_Buffer
4789                     (Get_Name_String (Project.Directory.Name));
4790                   Add_Str_To_Name_Buffer
4791                     (Get_Name_String (Lib_Ref_Symbol_File.Value));
4792                   Project.Symbol_Data.Reference := Name_Find;
4793                end if;
4794
4795                if not Is_Regular_File
4796                         (Get_Name_String (Project.Symbol_Data.Reference))
4797                then
4798                   Error_Msg_File_1 :=
4799                     File_Name_Type (Lib_Ref_Symbol_File.Value);
4800
4801                   --  For controlled and direct symbol policies, it is an error
4802                   --  if the reference symbol file does not exist. For other
4803                   --  symbol policies, this is just a warning
4804
4805                   Error_Msg_Warn :=
4806                     Project.Symbol_Data.Symbol_Policy /= Controlled
4807                     and then Project.Symbol_Data.Symbol_Policy /= Direct;
4808
4809                   Error_Msg
4810                     (Data.Flags,
4811                      "<library reference symbol file { does not exist",
4812                      Lib_Ref_Symbol_File.Location, Project);
4813
4814                   --  In addition in the non-controlled case, if symbol policy
4815                   --  is Compliant, it is changed to Autonomous, because there
4816                   --  is no reference to check against, and we don't want to
4817                   --  fail in this case.
4818
4819                   if Project.Symbol_Data.Symbol_Policy /= Controlled then
4820                      if Project.Symbol_Data.Symbol_Policy = Compliant then
4821                         Project.Symbol_Data.Symbol_Policy := Autonomous;
4822                      end if;
4823                   end if;
4824                end if;
4825
4826                --  If both the reference symbol file and the symbol file are
4827                --  defined, then check that they are not the same file.
4828
4829                if Project.Symbol_Data.Symbol_File /= No_Path then
4830                   Get_Name_String (Project.Symbol_Data.Symbol_File);
4831
4832                   if Name_Len > 0 then
4833                      declare
4834                         --  We do not need to pass a Directory to
4835                         --  Normalize_Pathname, since the path_information
4836                         --  already contains absolute information.
4837
4838                         Symb_Path : constant String :=
4839                                       Normalize_Pathname
4840                                         (Get_Name_String
4841                                            (Project.Object_Directory.Name) &
4842                                          Name_Buffer (1 .. Name_Len),
4843                                          Directory     => "/",
4844                                          Resolve_Links =>
4845                                            Opt.Follow_Links_For_Files);
4846                         Ref_Path  : constant String :=
4847                                       Normalize_Pathname
4848                                         (Get_Name_String
4849                                            (Project.Symbol_Data.Reference),
4850                                          Directory     => "/",
4851                                          Resolve_Links =>
4852                                            Opt.Follow_Links_For_Files);
4853                      begin
4854                         if Symb_Path = Ref_Path then
4855                            Error_Msg
4856                              (Data.Flags,
4857                               "library reference symbol file and library" &
4858                               " symbol file cannot be the same file",
4859                               Lib_Ref_Symbol_File.Location, Project);
4860                         end if;
4861                      end;
4862                   end if;
4863                end if;
4864             end if;
4865          end if;
4866       end if;
4867    end Check_Stand_Alone_Library;
4868
4869    ---------------------
4870    -- Check_Unit_Name --
4871    ---------------------
4872
4873    procedure Check_Unit_Name (Name : String; Unit : out Name_Id) is
4874       The_Name        : String := Name;
4875       Real_Name       : Name_Id;
4876       Need_Letter     : Boolean := True;
4877       Last_Underscore : Boolean := False;
4878       OK              : Boolean := The_Name'Length > 0;
4879       First           : Positive;
4880
4881       function Is_Reserved (Name : Name_Id) return Boolean;
4882       function Is_Reserved (S    : String)  return Boolean;
4883       --  Check that the given name is not an Ada 95 reserved word. The reason
4884       --  for the Ada 95 here is that we do not want to exclude the case of an
4885       --  Ada 95 unit called Interface (for example). In Ada 2005, such a unit
4886       --  name would be rejected anyway by the compiler. That means there is no
4887       --  requirement that the project file parser reject this.
4888
4889       -----------------
4890       -- Is_Reserved --
4891       -----------------
4892
4893       function Is_Reserved (S : String) return Boolean is
4894       begin
4895          Name_Len := 0;
4896          Add_Str_To_Name_Buffer (S);
4897          return Is_Reserved (Name_Find);
4898       end Is_Reserved;
4899
4900       -----------------
4901       -- Is_Reserved --
4902       -----------------
4903
4904       function Is_Reserved (Name : Name_Id) return Boolean is
4905       begin
4906          if Get_Name_Table_Byte (Name) /= 0
4907            and then Name /= Name_Project
4908            and then Name /= Name_Extends
4909            and then Name /= Name_External
4910            and then Name not in Ada_2005_Reserved_Words
4911          then
4912             Unit := No_Name;
4913             Debug_Output ("Ada reserved word: ", Name);
4914             return True;
4915
4916          else
4917             return False;
4918          end if;
4919       end Is_Reserved;
4920
4921    --  Start of processing for Check_Unit_Name
4922
4923    begin
4924       To_Lower (The_Name);
4925
4926       Name_Len := The_Name'Length;
4927       Name_Buffer (1 .. Name_Len) := The_Name;
4928
4929       --  Special cases of children of packages A, G, I and S on VMS
4930
4931       if OpenVMS_On_Target
4932         and then Name_Len > 3
4933         and then Name_Buffer (2 .. 3) = "__"
4934         and then
4935           (Name_Buffer (1) = 'a' or else
4936            Name_Buffer (1) = 'g' or else
4937            Name_Buffer (1) = 'i' or else
4938            Name_Buffer (1) = 's')
4939       then
4940          Name_Buffer (2) := '.';
4941          Name_Buffer (3 .. Name_Len - 1) := Name_Buffer (4 .. Name_Len);
4942          Name_Len := Name_Len - 1;
4943       end if;
4944
4945       Real_Name := Name_Find;
4946
4947       if Is_Reserved (Real_Name) then
4948          return;
4949       end if;
4950
4951       First := The_Name'First;
4952
4953       for Index in The_Name'Range loop
4954          if Need_Letter then
4955
4956             --  We need a letter (at the beginning, and following a dot),
4957             --  but we don't have one.
4958
4959             if Is_Letter (The_Name (Index)) then
4960                Need_Letter := False;
4961
4962             else
4963                OK := False;
4964
4965                if Current_Verbosity = High then
4966                   Debug_Indent;
4967                   Write_Int  (Types.Int (Index));
4968                   Write_Str  (": '");
4969                   Write_Char (The_Name (Index));
4970                   Write_Line ("' is not a letter.");
4971                end if;
4972
4973                exit;
4974             end if;
4975
4976          elsif Last_Underscore
4977            and then (The_Name (Index) = '_' or else The_Name (Index) = '.')
4978          then
4979             --  Two underscores are illegal, and a dot cannot follow
4980             --  an underscore.
4981
4982             OK := False;
4983
4984             if Current_Verbosity = High then
4985                Debug_Indent;
4986                Write_Int  (Types.Int (Index));
4987                Write_Str  (": '");
4988                Write_Char (The_Name (Index));
4989                Write_Line ("' is illegal here.");
4990             end if;
4991
4992             exit;
4993
4994          elsif The_Name (Index) = '.' then
4995
4996             --  First, check if the name before the dot is not a reserved word
4997
4998             if Is_Reserved (The_Name (First .. Index - 1)) then
4999                return;
5000             end if;
5001
5002             First := Index + 1;
5003
5004             --  We need a letter after a dot
5005
5006             Need_Letter := True;
5007
5008          elsif The_Name (Index) = '_' then
5009             Last_Underscore := True;
5010
5011          else
5012             --  We need an letter or a digit
5013
5014             Last_Underscore := False;
5015
5016             if not Is_Alphanumeric (The_Name (Index)) then
5017                OK := False;
5018
5019                if Current_Verbosity = High then
5020                   Debug_Indent;
5021                   Write_Int  (Types.Int (Index));
5022                   Write_Str  (": '");
5023                   Write_Char (The_Name (Index));
5024                   Write_Line ("' is not alphanumeric.");
5025                end if;
5026
5027                exit;
5028             end if;
5029          end if;
5030       end loop;
5031
5032       --  Cannot end with an underscore or a dot
5033
5034       OK := OK and then not Need_Letter and then not Last_Underscore;
5035
5036       if OK then
5037          if First /= Name'First
5038            and then Is_Reserved (The_Name (First .. The_Name'Last))
5039          then
5040             return;
5041          end if;
5042
5043          Unit := Real_Name;
5044
5045       else
5046          --  Signal a problem with No_Name
5047
5048          Unit := No_Name;
5049       end if;
5050    end Check_Unit_Name;
5051
5052    ----------------------------
5053    -- Compute_Directory_Last --
5054    ----------------------------
5055
5056    function Compute_Directory_Last (Dir : String) return Natural is
5057    begin
5058       if Dir'Length > 1
5059         and then (Dir (Dir'Last - 1) = Directory_Separator
5060                     or else
5061                   Dir (Dir'Last - 1) = '/')
5062       then
5063          return Dir'Last - 1;
5064       else
5065          return Dir'Last;
5066       end if;
5067    end Compute_Directory_Last;
5068
5069    ---------------------
5070    -- Get_Directories --
5071    ---------------------
5072
5073    procedure Get_Directories
5074      (Project : Project_Id;
5075       Data    : in out Tree_Processing_Data)
5076    is
5077       Shared : constant Shared_Project_Tree_Data_Access := Data.Tree.Shared;
5078
5079       Object_Dir  : constant Variable_Value :=
5080                       Util.Value_Of
5081                         (Name_Object_Dir, Project.Decl.Attributes, Shared);
5082
5083       Exec_Dir : constant Variable_Value :=
5084                    Util.Value_Of
5085                      (Name_Exec_Dir, Project.Decl.Attributes, Shared);
5086
5087       Source_Dirs : constant Variable_Value :=
5088                       Util.Value_Of
5089                         (Name_Source_Dirs, Project.Decl.Attributes, Shared);
5090
5091       Ignore_Source_Sub_Dirs : constant Variable_Value :=
5092                                  Util.Value_Of
5093                                    (Name_Ignore_Source_Sub_Dirs,
5094                                     Project.Decl.Attributes,
5095                                     Shared);
5096
5097       Excluded_Source_Dirs : constant Variable_Value :=
5098                               Util.Value_Of
5099                                 (Name_Excluded_Source_Dirs,
5100                                  Project.Decl.Attributes,
5101                                  Shared);
5102
5103       Source_Files : constant Variable_Value :=
5104                       Util.Value_Of
5105                         (Name_Source_Files,
5106                          Project.Decl.Attributes, Shared);
5107
5108       Last_Source_Dir   : String_List_Id    := Nil_String;
5109       Last_Src_Dir_Rank : Number_List_Index := No_Number_List;
5110
5111       Languages : constant Variable_Value :=
5112                       Prj.Util.Value_Of
5113                         (Name_Languages, Project.Decl.Attributes, Shared);
5114
5115       Remove_Source_Dirs : Boolean := False;
5116
5117       procedure Add_To_Or_Remove_From_Source_Dirs
5118         (Path : Path_Information;
5119          Rank : Natural);
5120       --  When Removed = False, the directory Path_Id to the list of
5121       --  source_dirs if not already in the list. When Removed = True,
5122       --  removed directory Path_Id if in the list.
5123
5124       procedure Find_Source_Dirs is new Expand_Subdirectory_Pattern
5125         (Add_To_Or_Remove_From_Source_Dirs);
5126
5127       ---------------------------------------
5128       -- Add_To_Or_Remove_From_Source_Dirs --
5129       ---------------------------------------
5130
5131       procedure Add_To_Or_Remove_From_Source_Dirs
5132         (Path : Path_Information;
5133          Rank : Natural)
5134       is
5135          List      : String_List_Id;
5136          Prev      : String_List_Id;
5137          Rank_List : Number_List_Index;
5138          Prev_Rank : Number_List_Index;
5139          Element   : String_Element;
5140
5141       begin
5142          Prev      := Nil_String;
5143          Prev_Rank := No_Number_List;
5144          List      := Project.Source_Dirs;
5145          Rank_List := Project.Source_Dir_Ranks;
5146          while List /= Nil_String loop
5147             Element := Shared.String_Elements.Table (List);
5148             exit when Element.Value = Name_Id (Path.Name);
5149             Prev := List;
5150             List := Element.Next;
5151             Prev_Rank := Rank_List;
5152             Rank_List := Shared.Number_Lists.Table (Prev_Rank).Next;
5153          end loop;
5154
5155          --  The directory is in the list if List is not Nil_String
5156
5157          if not Remove_Source_Dirs and then List = Nil_String then
5158             Debug_Output ("adding source dir=", Name_Id (Path.Display_Name));
5159
5160             String_Element_Table.Increment_Last (Shared.String_Elements);
5161             Element :=
5162               (Value         => Name_Id (Path.Name),
5163                Index         => 0,
5164                Display_Value => Name_Id (Path.Display_Name),
5165                Location      => No_Location,
5166                Flag          => False,
5167                Next          => Nil_String);
5168
5169             Number_List_Table.Increment_Last (Shared.Number_Lists);
5170
5171             if Last_Source_Dir = Nil_String then
5172
5173                --  This is the first source directory
5174
5175                Project.Source_Dirs :=
5176                  String_Element_Table.Last (Shared.String_Elements);
5177                Project.Source_Dir_Ranks :=
5178                  Number_List_Table.Last (Shared.Number_Lists);
5179
5180             else
5181                --  We already have source directories, link the previous
5182                --  last to the new one.
5183
5184                Shared.String_Elements.Table (Last_Source_Dir).Next :=
5185                  String_Element_Table.Last (Shared.String_Elements);
5186                Shared.Number_Lists.Table (Last_Src_Dir_Rank).Next :=
5187                  Number_List_Table.Last (Shared.Number_Lists);
5188             end if;
5189
5190             --  And register this source directory as the new last
5191
5192             Last_Source_Dir :=
5193               String_Element_Table.Last (Shared.String_Elements);
5194             Shared.String_Elements.Table (Last_Source_Dir) := Element;
5195             Last_Src_Dir_Rank := Number_List_Table.Last (Shared.Number_Lists);
5196             Shared.Number_Lists.Table (Last_Src_Dir_Rank) :=
5197               (Number => Rank, Next => No_Number_List);
5198
5199          elsif Remove_Source_Dirs and then List /= Nil_String then
5200
5201             --  Remove source dir if present
5202
5203             if Prev = Nil_String then
5204                Project.Source_Dirs := Shared.String_Elements.Table (List).Next;
5205                Project.Source_Dir_Ranks :=
5206                  Shared.Number_Lists.Table (Rank_List).Next;
5207
5208             else
5209                Shared.String_Elements.Table (Prev).Next :=
5210                  Shared.String_Elements.Table (List).Next;
5211                Shared.Number_Lists.Table (Prev_Rank).Next :=
5212                  Shared.Number_Lists.Table (Rank_List).Next;
5213             end if;
5214          end if;
5215       end Add_To_Or_Remove_From_Source_Dirs;
5216
5217       --  Local declarations
5218
5219       Dir_Exists : Boolean;
5220
5221       No_Sources : constant Boolean :=
5222                      ((not Source_Files.Default
5223                         and then Source_Files.Values = Nil_String)
5224                       or else
5225                         (not Source_Dirs.Default
5226                           and then Source_Dirs.Values = Nil_String)
5227                       or else
5228                         (not Languages.Default
5229                           and then Languages.Values = Nil_String))
5230                      and then Project.Extends = No_Project;
5231
5232    --  Start of processing for Get_Directories
5233
5234    begin
5235       Debug_Output ("starting to look for directories");
5236
5237       --  Set the object directory to its default which may be nil, if there
5238       --  is no sources in the project.
5239
5240       if No_Sources then
5241          Project.Object_Directory := No_Path_Information;
5242       else
5243          Project.Object_Directory := Project.Directory;
5244       end if;
5245
5246       --  Check the object directory
5247
5248       if Object_Dir.Value /= Empty_String then
5249          Get_Name_String (Object_Dir.Value);
5250
5251          if Name_Len = 0 then
5252             Error_Msg
5253               (Data.Flags,
5254                "Object_Dir cannot be empty",
5255                Object_Dir.Location, Project);
5256
5257          elsif Setup_Projects
5258            and then No_Sources
5259            and then Project.Extends = No_Project
5260          then
5261             --  Do not create an object directory for a non extending project
5262             --  with no sources.
5263
5264             Locate_Directory
5265               (Project,
5266                File_Name_Type (Object_Dir.Value),
5267                Path             => Project.Object_Directory,
5268                Dir_Exists       => Dir_Exists,
5269                Data             => Data,
5270                Location         => Object_Dir.Location,
5271                Must_Exist       => False,
5272                Externally_Built => Project.Externally_Built);
5273
5274          else
5275             --  We check that the specified object directory does exist.
5276             --  However, even when it doesn't exist, we set it to a default
5277             --  value. This is for the benefit of tools that recover from
5278             --  errors; for example, these tools could create the non existent
5279             --  directory. We always return an absolute directory name though.
5280
5281             Locate_Directory
5282               (Project,
5283                File_Name_Type (Object_Dir.Value),
5284                Path             => Project.Object_Directory,
5285                Create           => "object",
5286                Dir_Exists       => Dir_Exists,
5287                Data             => Data,
5288                Location         => Object_Dir.Location,
5289                Must_Exist       => False,
5290                Externally_Built => Project.Externally_Built);
5291
5292             if not Dir_Exists and then not Project.Externally_Built then
5293
5294                --  The object directory does not exist, report an error if the
5295                --  project is not externally built.
5296
5297                Err_Vars.Error_Msg_File_1 :=
5298                  File_Name_Type (Object_Dir.Value);
5299                Error_Or_Warning
5300                  (Data.Flags, Data.Flags.Require_Obj_Dirs,
5301                   "object directory { not found", Project.Location, Project);
5302             end if;
5303          end if;
5304
5305       elsif not No_Sources and then Subdirs /= null then
5306          Name_Len := 1;
5307          Name_Buffer (1) := '.';
5308          Locate_Directory
5309            (Project,
5310             Name_Find,
5311             Path             => Project.Object_Directory,
5312             Create           => "object",
5313             Dir_Exists       => Dir_Exists,
5314             Data             => Data,
5315             Location         => Object_Dir.Location,
5316             Externally_Built => Project.Externally_Built);
5317       end if;
5318
5319       if Current_Verbosity = High then
5320          if Project.Object_Directory = No_Path_Information then
5321             Debug_Output ("no object directory");
5322          else
5323             Write_Attr
5324               ("Object directory",
5325                Get_Name_String (Project.Object_Directory.Display_Name));
5326          end if;
5327       end if;
5328
5329       --  Check the exec directory
5330
5331       --  We set the object directory to its default
5332
5333       Project.Exec_Directory := Project.Object_Directory;
5334
5335       if Exec_Dir.Value /= Empty_String then
5336          Get_Name_String (Exec_Dir.Value);
5337
5338          if Name_Len = 0 then
5339             Error_Msg
5340               (Data.Flags,
5341                "Exec_Dir cannot be empty",
5342                Exec_Dir.Location, Project);
5343
5344          elsif Setup_Projects
5345            and then No_Sources
5346            and then Project.Extends = No_Project
5347          then
5348             --  Do not create an exec directory for a non extending project
5349             --  with no sources.
5350
5351             Locate_Directory
5352               (Project,
5353                File_Name_Type (Exec_Dir.Value),
5354                Path             => Project.Exec_Directory,
5355                Dir_Exists       => Dir_Exists,
5356                Data             => Data,
5357                Location         => Exec_Dir.Location,
5358                Externally_Built => Project.Externally_Built);
5359
5360          else
5361             --  We check that the specified exec directory does exist
5362
5363             Locate_Directory
5364               (Project,
5365                File_Name_Type (Exec_Dir.Value),
5366                Path             => Project.Exec_Directory,
5367                Dir_Exists       => Dir_Exists,
5368                Data             => Data,
5369                Create           => "exec",
5370                Location         => Exec_Dir.Location,
5371                Externally_Built => Project.Externally_Built);
5372
5373             if not Dir_Exists then
5374                Err_Vars.Error_Msg_File_1 := File_Name_Type (Exec_Dir.Value);
5375                Error_Or_Warning
5376                  (Data.Flags, Data.Flags.Missing_Source_Files,
5377                   "exec directory { not found", Project.Location, Project);
5378             end if;
5379          end if;
5380       end if;
5381
5382       if Current_Verbosity = High then
5383          if Project.Exec_Directory = No_Path_Information then
5384             Debug_Output ("no exec directory");
5385          else
5386             Debug_Output
5387               ("exec directory: ",
5388                Name_Id (Project.Exec_Directory.Display_Name));
5389          end if;
5390       end if;
5391
5392       --  Look for the source directories
5393
5394       Debug_Output ("starting to look for source directories");
5395
5396       pragma Assert (Source_Dirs.Kind = List, "Source_Dirs is not a list");
5397
5398       if not Source_Files.Default
5399         and then Source_Files.Values = Nil_String
5400       then
5401          Project.Source_Dirs := Nil_String;
5402
5403          if Project.Qualifier = Standard then
5404             Error_Msg
5405               (Data.Flags,
5406                "a standard project cannot have no sources",
5407                Source_Files.Location, Project);
5408          end if;
5409
5410       elsif Source_Dirs.Default then
5411
5412          --  No Source_Dirs specified: the single source directory is the one
5413          --  containing the project file.
5414
5415          Remove_Source_Dirs := False;
5416          Add_To_Or_Remove_From_Source_Dirs
5417            (Path => (Name         => Project.Directory.Name,
5418                      Display_Name => Project.Directory.Display_Name),
5419             Rank => 1);
5420
5421       else
5422          Remove_Source_Dirs := False;
5423          Find_Source_Dirs
5424            (Project       => Project,
5425             Data          => Data,
5426             Patterns      => Source_Dirs.Values,
5427             Ignore        => Ignore_Source_Sub_Dirs.Values,
5428             Search_For    => Search_Directories,
5429             Resolve_Links => Opt.Follow_Links_For_Dirs);
5430
5431          if Project.Source_Dirs = Nil_String
5432            and then Project.Qualifier = Standard
5433          then
5434             Error_Msg
5435               (Data.Flags,
5436                "a standard project cannot have no source directories",
5437                Source_Dirs.Location, Project);
5438          end if;
5439       end if;
5440
5441       if not Excluded_Source_Dirs.Default
5442         and then Excluded_Source_Dirs.Values /= Nil_String
5443       then
5444          Remove_Source_Dirs := True;
5445          Find_Source_Dirs
5446            (Project       => Project,
5447             Data          => Data,
5448             Patterns      => Excluded_Source_Dirs.Values,
5449             Ignore        => Nil_String,
5450             Search_For    => Search_Directories,
5451             Resolve_Links => Opt.Follow_Links_For_Dirs);
5452       end if;
5453
5454       Debug_Output ("putting source directories in canonical cases");
5455
5456       declare
5457          Current : String_List_Id := Project.Source_Dirs;
5458          Element : String_Element;
5459
5460       begin
5461          while Current /= Nil_String loop
5462             Element := Shared.String_Elements.Table (Current);
5463             if Element.Value /= No_Name then
5464                Element.Value :=
5465                  Name_Id (Canonical_Case_File_Name (Element.Value));
5466                Shared.String_Elements.Table (Current) := Element;
5467             end if;
5468
5469             Current := Element.Next;
5470          end loop;
5471       end;
5472    end Get_Directories;
5473
5474    ---------------
5475    -- Get_Mains --
5476    ---------------
5477
5478    procedure Get_Mains
5479      (Project : Project_Id;
5480       Data    : in out Tree_Processing_Data)
5481    is
5482       Shared : constant Shared_Project_Tree_Data_Access := Data.Tree.Shared;
5483
5484       Mains : constant Variable_Value :=
5485                Prj.Util.Value_Of
5486                  (Name_Main, Project.Decl.Attributes, Shared);
5487       List  : String_List_Id;
5488       Elem  : String_Element;
5489
5490    begin
5491       Project.Mains := Mains.Values;
5492
5493       --  If no Mains were specified, and if we are an extending project,
5494       --  inherit the Mains from the project we are extending.
5495
5496       if Mains.Default then
5497          if not Project.Library and then Project.Extends /= No_Project then
5498             Project.Mains := Project.Extends.Mains;
5499          end if;
5500
5501       --  In a library project file, Main cannot be specified
5502
5503       elsif Project.Library then
5504          Error_Msg
5505            (Data.Flags,
5506             "a library project file cannot have Main specified",
5507             Mains.Location, Project);
5508
5509       else
5510          List := Mains.Values;
5511          while List /= Nil_String loop
5512             Elem := Shared.String_Elements.Table (List);
5513
5514             if Length_Of_Name (Elem.Value) = 0 then
5515                Error_Msg
5516                  (Data.Flags,
5517                   "?a main cannot have an empty name",
5518                   Elem.Location, Project);
5519                exit;
5520             end if;
5521
5522             List := Elem.Next;
5523          end loop;
5524       end if;
5525    end Get_Mains;
5526
5527    ---------------------------
5528    -- Get_Sources_From_File --
5529    ---------------------------
5530
5531    procedure Get_Sources_From_File
5532      (Path     : String;
5533       Location : Source_Ptr;
5534       Project  : in out Project_Processing_Data;
5535       Data     : in out Tree_Processing_Data)
5536    is
5537       File        : Prj.Util.Text_File;
5538       Line        : String (1 .. 250);
5539       Last        : Natural;
5540       Source_Name : File_Name_Type;
5541       Name_Loc    : Name_Location;
5542
5543    begin
5544       if Current_Verbosity = High then
5545          Debug_Output ("opening """ & Path & '"');
5546       end if;
5547
5548       --  Open the file
5549
5550       Prj.Util.Open (File, Path);
5551
5552       if not Prj.Util.Is_Valid (File) then
5553          Error_Msg
5554            (Data.Flags, "file does not exist", Location, Project.Project);
5555
5556       else
5557          --  Read the lines one by one
5558
5559          while not Prj.Util.End_Of_File (File) loop
5560             Prj.Util.Get_Line (File, Line, Last);
5561
5562             --  A non empty, non comment line should contain a file name
5563
5564             if Last /= 0
5565               and then (Last = 1 or else Line (1 .. 2) /= "--")
5566             then
5567                Name_Len := Last;
5568                Name_Buffer (1 .. Name_Len) := Line (1 .. Last);
5569                Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
5570                Source_Name := Name_Find;
5571
5572                --  Check that there is no directory information
5573
5574                for J in 1 .. Last loop
5575                   if Line (J) = '/' or else Line (J) = Directory_Separator then
5576                      Error_Msg_File_1 := Source_Name;
5577                      Error_Msg
5578                        (Data.Flags,
5579                         "file name cannot include directory information ({)",
5580                         Location, Project.Project);
5581                      exit;
5582                   end if;
5583                end loop;
5584
5585                Name_Loc := Source_Names_Htable.Get
5586                  (Project.Source_Names, Source_Name);
5587
5588                if Name_Loc = No_Name_Location then
5589                   Name_Loc :=
5590                     (Name     => Source_Name,
5591                      Location => Location,
5592                      Source   => No_Source,
5593                      Listed   => True,
5594                      Found    => False);
5595
5596                else
5597                   Name_Loc.Listed := True;
5598                end if;
5599
5600                Source_Names_Htable.Set
5601                  (Project.Source_Names, Source_Name, Name_Loc);
5602             end if;
5603          end loop;
5604
5605          Prj.Util.Close (File);
5606
5607       end if;
5608    end Get_Sources_From_File;
5609
5610    ------------------
5611    -- No_Space_Img --
5612    ------------------
5613
5614    function No_Space_Img (N : Natural) return String is
5615       Image : constant String := N'Img;
5616    begin
5617       return Image (2 .. Image'Last);
5618    end No_Space_Img;
5619
5620    -----------------------
5621    -- Compute_Unit_Name --
5622    -----------------------
5623
5624    procedure Compute_Unit_Name
5625      (File_Name : File_Name_Type;
5626       Naming    : Lang_Naming_Data;
5627       Kind      : out Source_Kind;
5628       Unit      : out Name_Id;
5629       Project   : Project_Processing_Data)
5630    is
5631       Filename : constant String  := Get_Name_String (File_Name);
5632       Last     : Integer          := Filename'Last;
5633       Sep_Len  : Integer;
5634       Body_Len : Integer;
5635       Spec_Len : Integer;
5636
5637       Unit_Except : Unit_Exception;
5638       Masked      : Boolean  := False;
5639
5640    begin
5641       Unit := No_Name;
5642       Kind := Spec;
5643
5644       if Naming.Separate_Suffix = No_File
5645         or else Naming.Body_Suffix = No_File
5646         or else Naming.Spec_Suffix = No_File
5647       then
5648          return;
5649       end if;
5650
5651       if Naming.Dot_Replacement = No_File then
5652          Debug_Output ("no dot_replacement specified");
5653          return;
5654       end if;
5655
5656       Sep_Len  := Integer (Length_Of_Name (Naming.Separate_Suffix));
5657       Spec_Len := Integer (Length_Of_Name (Naming.Spec_Suffix));
5658       Body_Len := Integer (Length_Of_Name (Naming.Body_Suffix));
5659
5660       --  Choose the longest suffix that matches. If there are several matches,
5661       --  give priority to specs, then bodies, then separates.
5662
5663       if Naming.Separate_Suffix /= Naming.Body_Suffix
5664         and then Suffix_Matches (Filename, Naming.Separate_Suffix)
5665       then
5666          Last := Filename'Last - Sep_Len;
5667          Kind := Sep;
5668       end if;
5669
5670       if Filename'Last - Body_Len <= Last
5671         and then Suffix_Matches (Filename, Naming.Body_Suffix)
5672       then
5673          Last := Natural'Min (Last, Filename'Last - Body_Len);
5674          Kind := Impl;
5675       end if;
5676
5677       if Filename'Last - Spec_Len <= Last
5678         and then Suffix_Matches (Filename, Naming.Spec_Suffix)
5679       then
5680          Last := Natural'Min (Last, Filename'Last - Spec_Len);
5681          Kind := Spec;
5682       end if;
5683
5684       if Last = Filename'Last then
5685          Debug_Output ("no matching suffix");
5686          return;
5687       end if;
5688
5689       --  Check that the casing matches
5690
5691       if File_Names_Case_Sensitive then
5692          case Naming.Casing is
5693             when All_Lower_Case =>
5694                for J in Filename'First .. Last loop
5695                   if Is_Letter (Filename (J))
5696                     and then not Is_Lower (Filename (J))
5697                   then
5698                      Debug_Output ("invalid casing");
5699                      return;
5700                   end if;
5701                end loop;
5702
5703             when All_Upper_Case =>
5704                for J in Filename'First .. Last loop
5705                   if Is_Letter (Filename (J))
5706                     and then not Is_Upper (Filename (J))
5707                   then
5708                      Debug_Output ("invalid casing");
5709                      return;
5710                   end if;
5711                end loop;
5712
5713             when Mixed_Case | Unknown =>
5714                null;
5715          end case;
5716       end if;
5717
5718       --  If Dot_Replacement is not a single dot, then there should not
5719       --  be any dot in the name.
5720
5721       declare
5722          Dot_Repl : constant String :=
5723                       Get_Name_String (Naming.Dot_Replacement);
5724
5725       begin
5726          if Dot_Repl /= "." then
5727             for Index in Filename'First .. Last loop
5728                if Filename (Index) = '.' then
5729                   Debug_Output ("invalid name, contains dot");
5730                   return;
5731                end if;
5732             end loop;
5733
5734             Replace_Into_Name_Buffer
5735               (Filename (Filename'First .. Last), Dot_Repl, '.');
5736
5737          else
5738             Name_Len := Last - Filename'First + 1;
5739             Name_Buffer (1 .. Name_Len) := Filename (Filename'First .. Last);
5740             Fixed.Translate
5741               (Source  => Name_Buffer (1 .. Name_Len),
5742                Mapping => Lower_Case_Map);
5743          end if;
5744       end;
5745
5746       --  In the standard GNAT naming scheme, check for special cases: children
5747       --  or separates of A, G, I or S, and run time sources.
5748
5749       if Is_Standard_GNAT_Naming (Naming)
5750         and then Name_Len >= 3
5751       then
5752          declare
5753             S1 : constant Character := Name_Buffer (1);
5754             S2 : constant Character := Name_Buffer (2);
5755             S3 : constant Character := Name_Buffer (3);
5756
5757          begin
5758             if        S1 = 'a'
5759               or else S1 = 'g'
5760               or else S1 = 'i'
5761               or else S1 = 's'
5762             then
5763                --  Children or separates of packages A, G, I or S. These names
5764                --  are x__ ... or x~... (where x is a, g, i, or s). Both
5765                --  versions (x__... and x~...) are allowed in all platforms,
5766                --  because it is not possible to know the platform before
5767                --  processing of the project files.
5768
5769                if S2 = '_' and then S3 = '_' then
5770                   Name_Buffer (2) := '.';
5771                   Name_Buffer (3 .. Name_Len - 1) :=
5772                     Name_Buffer (4 .. Name_Len);
5773                   Name_Len := Name_Len - 1;
5774
5775                elsif S2 = '~' then
5776                   Name_Buffer (2) := '.';
5777
5778                elsif S2 = '.' then
5779
5780                   --  If it is potentially a run time source
5781
5782                   null;
5783                end if;
5784             end if;
5785          end;
5786       end if;
5787
5788       --  Name_Buffer contains the name of the unit in lower-cases. Check
5789       --  that this is a valid unit name
5790
5791       Check_Unit_Name (Name_Buffer (1 .. Name_Len), Unit);
5792
5793       --  If there is a naming exception for the same unit, the file is not
5794       --  a source for the unit.
5795
5796       if Unit /= No_Name then
5797          Unit_Except :=
5798            Unit_Exceptions_Htable.Get (Project.Unit_Exceptions, Unit);
5799
5800          if Kind = Spec then
5801             Masked := Unit_Except.Spec /= No_File
5802                         and then
5803                       Unit_Except.Spec /= File_Name;
5804          else
5805             Masked := Unit_Except.Impl /= No_File
5806                         and then
5807                       Unit_Except.Impl /= File_Name;
5808          end if;
5809
5810          if Masked then
5811             if Current_Verbosity = High then
5812                Debug_Indent;
5813                Write_Str ("   """ & Filename & """ contains the ");
5814
5815                if Kind = Spec then
5816                   Write_Str ("spec of a unit found in """);
5817                   Write_Str (Get_Name_String (Unit_Except.Spec));
5818                else
5819                   Write_Str ("body of a unit found in """);
5820                   Write_Str (Get_Name_String (Unit_Except.Impl));
5821                end if;
5822
5823                Write_Line (""" (ignored)");
5824             end if;
5825
5826             Unit := No_Name;
5827          end if;
5828       end if;
5829
5830       if Unit /= No_Name
5831         and then Current_Verbosity = High
5832       then
5833          case Kind is
5834             when Spec => Debug_Output ("spec of", Unit);
5835             when Impl => Debug_Output ("body of", Unit);
5836             when Sep  => Debug_Output ("sep of", Unit);
5837          end case;
5838       end if;
5839    end Compute_Unit_Name;
5840
5841    --------------------------
5842    -- Check_Illegal_Suffix --
5843    --------------------------
5844
5845    procedure Check_Illegal_Suffix
5846      (Project         : Project_Id;
5847       Suffix          : File_Name_Type;
5848       Dot_Replacement : File_Name_Type;
5849       Attribute_Name  : String;
5850       Location        : Source_Ptr;
5851       Data            : in out Tree_Processing_Data)
5852    is
5853       Suffix_Str : constant String := Get_Name_String (Suffix);
5854
5855    begin
5856       if Suffix_Str'Length = 0 then
5857
5858          --  Always valid
5859
5860          return;
5861
5862       elsif Index (Suffix_Str, ".") = 0 then
5863          Err_Vars.Error_Msg_File_1 := Suffix;
5864          Error_Msg
5865            (Data.Flags,
5866             "{ is illegal for " & Attribute_Name & ": must have a dot",
5867             Location, Project);
5868          return;
5869       end if;
5870
5871       --  Case of dot replacement is a single dot, and first character of
5872       --  suffix is also a dot.
5873
5874       if Dot_Replacement /= No_File
5875         and then Get_Name_String (Dot_Replacement) = "."
5876         and then Suffix_Str (Suffix_Str'First) = '.'
5877       then
5878          for Index in Suffix_Str'First + 1 .. Suffix_Str'Last loop
5879
5880             --  If there are multiple dots in the name
5881
5882             if Suffix_Str (Index) = '.' then
5883
5884                --  It is illegal to have a letter following the initial dot
5885
5886                if Is_Letter (Suffix_Str (Suffix_Str'First + 1)) then
5887                   Err_Vars.Error_Msg_File_1 := Suffix;
5888                   Error_Msg
5889                     (Data.Flags,
5890                      "{ is illegal for " & Attribute_Name
5891                      & ": ambiguous prefix when Dot_Replacement is a dot",
5892                      Location, Project);
5893                end if;
5894                return;
5895             end if;
5896          end loop;
5897       end if;
5898    end Check_Illegal_Suffix;
5899
5900    ----------------------
5901    -- Locate_Directory --
5902    ----------------------
5903
5904    procedure Locate_Directory
5905      (Project          : Project_Id;
5906       Name             : File_Name_Type;
5907       Path             : out Path_Information;
5908       Dir_Exists       : out Boolean;
5909       Data             : in out Tree_Processing_Data;
5910       Create           : String := "";
5911       Location         : Source_Ptr := No_Location;
5912       Must_Exist       : Boolean := True;
5913       Externally_Built : Boolean := False)
5914    is
5915       Parent          : constant Path_Name_Type :=
5916                           Project.Directory.Display_Name;
5917       The_Parent      : constant String :=
5918                           Get_Name_String (Parent);
5919       The_Parent_Last : constant Natural :=
5920                           Compute_Directory_Last (The_Parent);
5921       Full_Name       : File_Name_Type;
5922       The_Name        : File_Name_Type;
5923
5924    begin
5925       Get_Name_String (Name);
5926
5927       --  Add Subdirs.all if it is a directory that may be created and
5928       --  Subdirs is not null;
5929
5930       if Create /= "" and then Subdirs /= null then
5931          if Name_Buffer (Name_Len) /= Directory_Separator then
5932             Add_Char_To_Name_Buffer (Directory_Separator);
5933          end if;
5934
5935          Add_Str_To_Name_Buffer (Subdirs.all);
5936       end if;
5937
5938       --  Convert '/' to directory separator (for Windows)
5939
5940       for J in 1 .. Name_Len loop
5941          if Name_Buffer (J) = '/' then
5942             Name_Buffer (J) := Directory_Separator;
5943          end if;
5944       end loop;
5945
5946       The_Name := Name_Find;
5947
5948       if Current_Verbosity = High then
5949          Debug_Indent;
5950          Write_Str ("Locate_Directory (""");
5951          Write_Str (Get_Name_String (The_Name));
5952          Write_Str (""", in """);
5953          Write_Str (The_Parent);
5954          Write_Line (""")");
5955       end if;
5956
5957       Path := No_Path_Information;
5958       Dir_Exists := False;
5959
5960       if Is_Absolute_Path (Get_Name_String (The_Name)) then
5961          Full_Name := The_Name;
5962
5963       else
5964          Name_Len := 0;
5965          Add_Str_To_Name_Buffer
5966            (The_Parent (The_Parent'First .. The_Parent_Last));
5967          Add_Str_To_Name_Buffer (Get_Name_String (The_Name));
5968          Full_Name := Name_Find;
5969       end if;
5970
5971       declare
5972          Full_Path_Name : String_Access :=
5973                             new String'(Get_Name_String (Full_Name));
5974
5975       begin
5976          if (Setup_Projects or else Subdirs /= null)
5977            and then Create'Length > 0
5978          then
5979             if not Is_Directory (Full_Path_Name.all) then
5980
5981                --  If project is externally built, do not create a subdir,
5982                --  use the specified directory, without the subdir.
5983
5984                if Externally_Built then
5985                   if Is_Absolute_Path (Get_Name_String (Name)) then
5986                      Get_Name_String (Name);
5987
5988                   else
5989                      Name_Len := 0;
5990                      Add_Str_To_Name_Buffer
5991                        (The_Parent (The_Parent'First .. The_Parent_Last));
5992                      Add_Str_To_Name_Buffer (Get_Name_String (Name));
5993                   end if;
5994
5995                   Full_Path_Name := new String'(Name_Buffer (1 .. Name_Len));
5996
5997                else
5998                   begin
5999                      Create_Path (Full_Path_Name.all);
6000
6001                      if not Quiet_Output then
6002                         Write_Str (Create);
6003                         Write_Str (" directory """);
6004                         Write_Str (Full_Path_Name.all);
6005                         Write_Str (""" created for project ");
6006                         Write_Line (Get_Name_String (Project.Name));
6007                      end if;
6008
6009                   exception
6010                      when Use_Error =>
6011                         Error_Msg
6012                           (Data.Flags,
6013                            "could not create " & Create &
6014                            " directory " & Full_Path_Name.all,
6015                            Location, Project);
6016                   end;
6017                end if;
6018             end if;
6019          end if;
6020
6021          Dir_Exists := Is_Directory (Full_Path_Name.all);
6022
6023          if not Must_Exist or else Dir_Exists then
6024             declare
6025                Normed : constant String :=
6026                           Normalize_Pathname
6027                             (Full_Path_Name.all,
6028                              Directory      =>
6029                               The_Parent (The_Parent'First .. The_Parent_Last),
6030                              Resolve_Links  => False,
6031                              Case_Sensitive => True);
6032
6033                Canonical_Path : constant String :=
6034                                   Normalize_Pathname
6035                                     (Normed,
6036                                      Directory      =>
6037                                        The_Parent
6038                                          (The_Parent'First .. The_Parent_Last),
6039                                      Resolve_Links  =>
6040                                         Opt.Follow_Links_For_Dirs,
6041                                      Case_Sensitive => False);
6042
6043             begin
6044                Name_Len := Normed'Length;
6045                Name_Buffer (1 .. Name_Len) := Normed;
6046
6047                --  Directories should always end with a directory separator
6048
6049                if Name_Buffer (Name_Len) /= Directory_Separator then
6050                   Add_Char_To_Name_Buffer (Directory_Separator);
6051                end if;
6052
6053                Path.Display_Name := Name_Find;
6054
6055                Name_Len := Canonical_Path'Length;
6056                Name_Buffer (1 .. Name_Len) := Canonical_Path;
6057
6058                if Name_Buffer (Name_Len) /= Directory_Separator then
6059                   Add_Char_To_Name_Buffer (Directory_Separator);
6060                end if;
6061
6062                Path.Name := Name_Find;
6063             end;
6064          end if;
6065
6066          Free (Full_Path_Name);
6067       end;
6068    end Locate_Directory;
6069
6070    ---------------------------
6071    -- Find_Excluded_Sources --
6072    ---------------------------
6073
6074    procedure Find_Excluded_Sources
6075      (Project : in out Project_Processing_Data;
6076       Data    : in out Tree_Processing_Data)
6077    is
6078       Shared : constant Shared_Project_Tree_Data_Access := Data.Tree.Shared;
6079
6080       Excluded_Source_List_File : constant Variable_Value :=
6081                                     Util.Value_Of
6082                                       (Name_Excluded_Source_List_File,
6083                                        Project.Project.Decl.Attributes,
6084                                        Shared);
6085       Excluded_Sources          : Variable_Value := Util.Value_Of
6086                                     (Name_Excluded_Source_Files,
6087                                      Project.Project.Decl.Attributes,
6088                                      Shared);
6089
6090       Current         : String_List_Id;
6091       Element         : String_Element;
6092       Location        : Source_Ptr;
6093       Name            : File_Name_Type;
6094       File            : Prj.Util.Text_File;
6095       Line            : String (1 .. 300);
6096       Last            : Natural;
6097       Locally_Removed : Boolean := False;
6098
6099    begin
6100       --  If Excluded_Source_Files is not declared, check Locally_Removed_Files
6101
6102       if Excluded_Sources.Default then
6103          Locally_Removed := True;
6104          Excluded_Sources :=
6105            Util.Value_Of
6106              (Name_Locally_Removed_Files,
6107               Project.Project.Decl.Attributes, Shared);
6108       end if;
6109
6110       --  If there are excluded sources, put them in the table
6111
6112       if not Excluded_Sources.Default then
6113          if not Excluded_Source_List_File.Default then
6114             if Locally_Removed then
6115                Error_Msg
6116                  (Data.Flags,
6117                   "?both attributes Locally_Removed_Files and " &
6118                   "Excluded_Source_List_File are present",
6119                   Excluded_Source_List_File.Location, Project.Project);
6120             else
6121                Error_Msg
6122                  (Data.Flags,
6123                   "?both attributes Excluded_Source_Files and " &
6124                   "Excluded_Source_List_File are present",
6125                   Excluded_Source_List_File.Location, Project.Project);
6126             end if;
6127          end if;
6128
6129          Current := Excluded_Sources.Values;
6130          while Current /= Nil_String loop
6131             Element := Shared.String_Elements.Table (Current);
6132             Name := Canonical_Case_File_Name (Element.Value);
6133
6134             --  If the element has no location, then use the location of
6135             --  Excluded_Sources to report possible errors.
6136
6137             if Element.Location = No_Location then
6138                Location := Excluded_Sources.Location;
6139             else
6140                Location := Element.Location;
6141             end if;
6142
6143             Excluded_Sources_Htable.Set
6144               (Project.Excluded, Name,
6145                (Name, No_File, 0, False, Location));
6146             Current := Element.Next;
6147          end loop;
6148
6149       elsif not Excluded_Source_List_File.Default then
6150          Location := Excluded_Source_List_File.Location;
6151
6152          declare
6153             Source_File_Name : constant File_Name_Type :=
6154                                  File_Name_Type
6155                                     (Excluded_Source_List_File.Value);
6156             Source_File_Line : Natural := 0;
6157
6158             Source_File_Path_Name : constant String :=
6159                                       Path_Name_Of
6160                                         (Source_File_Name,
6161                                          Project.Project.Directory.Name);
6162
6163          begin
6164             if Source_File_Path_Name'Length = 0 then
6165                Err_Vars.Error_Msg_File_1 :=
6166                  File_Name_Type (Excluded_Source_List_File.Value);
6167                Error_Msg
6168                  (Data.Flags,
6169                   "file with excluded sources { does not exist",
6170                   Excluded_Source_List_File.Location, Project.Project);
6171
6172             else
6173                --  Open the file
6174
6175                Prj.Util.Open (File, Source_File_Path_Name);
6176
6177                if not Prj.Util.Is_Valid (File) then
6178                   Error_Msg
6179                     (Data.Flags, "file does not exist",
6180                      Location, Project.Project);
6181                else
6182                   --  Read the lines one by one
6183
6184                   while not Prj.Util.End_Of_File (File) loop
6185                      Prj.Util.Get_Line (File, Line, Last);
6186                      Source_File_Line := Source_File_Line + 1;
6187
6188                      --  Non empty, non comment line should contain a file name
6189
6190                      if Last /= 0
6191                        and then (Last = 1 or else Line (1 .. 2) /= "--")
6192                      then
6193                         Name_Len := Last;
6194                         Name_Buffer (1 .. Name_Len) := Line (1 .. Last);
6195                         Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
6196                         Name := Name_Find;
6197
6198                         --  Check that there is no directory information
6199
6200                         for J in 1 .. Last loop
6201                            if Line (J) = '/'
6202                              or else Line (J) = Directory_Separator
6203                            then
6204                               Error_Msg_File_1 := Name;
6205                               Error_Msg
6206                                 (Data.Flags,
6207                                  "file name cannot include " &
6208                                  "directory information ({)",
6209                                  Location, Project.Project);
6210                               exit;
6211                            end if;
6212                         end loop;
6213
6214                         Excluded_Sources_Htable.Set
6215                           (Project.Excluded,
6216                            Name,
6217                            (Name, Source_File_Name, Source_File_Line,
6218                             False, Location));
6219                      end if;
6220                   end loop;
6221
6222                   Prj.Util.Close (File);
6223                end if;
6224             end if;
6225          end;
6226       end if;
6227    end Find_Excluded_Sources;
6228
6229    ------------------
6230    -- Find_Sources --
6231    ------------------
6232
6233    procedure Find_Sources
6234      (Project : in out Project_Processing_Data;
6235       Data    : in out Tree_Processing_Data)
6236    is
6237       Shared : constant Shared_Project_Tree_Data_Access := Data.Tree.Shared;
6238
6239       Sources : constant Variable_Value :=
6240                   Util.Value_Of
6241                     (Name_Source_Files,
6242                      Project.Project.Decl.Attributes,
6243                      Shared);
6244
6245       Source_List_File : constant Variable_Value :=
6246                            Util.Value_Of
6247                              (Name_Source_List_File,
6248                               Project.Project.Decl.Attributes,
6249                               Shared);
6250
6251       Name_Loc             : Name_Location;
6252       Has_Explicit_Sources : Boolean;
6253
6254    begin
6255       pragma Assert (Sources.Kind = List, "Source_Files is not a list");
6256       pragma Assert
6257         (Source_List_File.Kind = Single,
6258          "Source_List_File is not a single string");
6259
6260       Project.Source_List_File_Location := Source_List_File.Location;
6261
6262       --  If the user has specified a Source_Files attribute
6263
6264       if not Sources.Default then
6265          if not Source_List_File.Default then
6266             Error_Msg
6267               (Data.Flags,
6268                "?both attributes source_files and " &
6269                "source_list_file are present",
6270                Source_List_File.Location, Project.Project);
6271          end if;
6272
6273          --  Sources is a list of file names
6274
6275          declare
6276             Current  : String_List_Id := Sources.Values;
6277             Element  : String_Element;
6278             Location : Source_Ptr;
6279             Name     : File_Name_Type;
6280
6281          begin
6282             if Current = Nil_String then
6283                Project.Project.Languages := No_Language_Index;
6284
6285                --  This project contains no source. For projects that don't
6286                --  extend other projects, this also means that there is no
6287                --  need for an object directory, if not specified.
6288
6289                if Project.Project.Extends = No_Project
6290                  and then
6291                    Project.Project.Object_Directory = Project.Project.Directory
6292                  and then
6293                    not (Project.Project.Qualifier = Aggregate_Library)
6294                then
6295                   Project.Project.Object_Directory := No_Path_Information;
6296                end if;
6297             end if;
6298
6299             while Current /= Nil_String loop
6300                Element := Shared.String_Elements.Table (Current);
6301                Name := Canonical_Case_File_Name (Element.Value);
6302                Get_Name_String (Element.Value);
6303
6304                --  If the element has no location, then use the location of
6305                --  Sources to report possible errors.
6306
6307                if Element.Location = No_Location then
6308                   Location := Sources.Location;
6309                else
6310                   Location := Element.Location;
6311                end if;
6312
6313                --  Check that there is no directory information
6314
6315                for J in 1 .. Name_Len loop
6316                   if Name_Buffer (J) = '/'
6317                     or else Name_Buffer (J) = Directory_Separator
6318                   then
6319                      Error_Msg_File_1 := Name;
6320                      Error_Msg
6321                        (Data.Flags,
6322                         "file name cannot include directory " &
6323                         "information ({)",
6324                         Location, Project.Project);
6325                      exit;
6326                   end if;
6327                end loop;
6328
6329                --  Check whether the file is already there: the same file name
6330                --  may be in the list. If the source is missing, the error will
6331                --  be on the first mention of the source file name.
6332
6333                Name_Loc := Source_Names_Htable.Get
6334                  (Project.Source_Names, Name);
6335
6336                if Name_Loc = No_Name_Location then
6337                   Name_Loc :=
6338                     (Name     => Name,
6339                      Location => Location,
6340                      Source   => No_Source,
6341                      Listed   => True,
6342                      Found    => False);
6343
6344                else
6345                   Name_Loc.Listed := True;
6346                end if;
6347
6348                Source_Names_Htable.Set
6349                  (Project.Source_Names, Name, Name_Loc);
6350
6351                Current := Element.Next;
6352             end loop;
6353
6354             Has_Explicit_Sources := True;
6355          end;
6356
6357          --  If we have no Source_Files attribute, check the Source_List_File
6358          --  attribute.
6359
6360       elsif not Source_List_File.Default then
6361
6362          --  Source_List_File is the name of the file that contains the source
6363          --  file names.
6364
6365          declare
6366             Source_File_Path_Name : constant String :=
6367                                       Path_Name_Of
6368                                         (File_Name_Type
6369                                            (Source_List_File.Value),
6370                                          Project.Project.
6371                                            Directory.Display_Name);
6372
6373          begin
6374             Has_Explicit_Sources := True;
6375
6376             if Source_File_Path_Name'Length = 0 then
6377                Err_Vars.Error_Msg_File_1 :=
6378                  File_Name_Type (Source_List_File.Value);
6379                Error_Msg
6380                  (Data.Flags,
6381                   "file with sources { does not exist",
6382                   Source_List_File.Location, Project.Project);
6383
6384             else
6385                Get_Sources_From_File
6386                  (Source_File_Path_Name, Source_List_File.Location,
6387                   Project, Data);
6388             end if;
6389          end;
6390
6391       else
6392          --  Neither Source_Files nor Source_List_File has been specified. Find
6393          --  all the files that satisfy the naming scheme in all the source
6394          --  directories.
6395
6396          Has_Explicit_Sources := False;
6397       end if;
6398
6399       --  Remove any exception that is not in the specified list of sources
6400
6401       if Has_Explicit_Sources then
6402          declare
6403             Source : Source_Id;
6404             Iter   : Source_Iterator;
6405             NL     : Name_Location;
6406             Again  : Boolean;
6407          begin
6408             Iter_Loop :
6409             loop
6410                Again := False;
6411                Iter := For_Each_Source (Data.Tree, Project.Project);
6412
6413                Source_Loop :
6414                loop
6415                   Source := Prj.Element (Iter);
6416                   exit Source_Loop when Source = No_Source;
6417
6418                   if Source.Naming_Exception /= No then
6419                      NL := Source_Names_Htable.Get
6420                        (Project.Source_Names, Source.File);
6421
6422                      if NL /= No_Name_Location and then not NL.Listed then
6423                         --  Remove the exception
6424                         Source_Names_Htable.Set
6425                           (Project.Source_Names,
6426                            Source.File,
6427                            No_Name_Location);
6428                         Remove_Source (Data.Tree, Source, No_Source);
6429
6430                         if Source.Naming_Exception = Yes then
6431                            Error_Msg_Name_1 := Name_Id (Source.File);
6432                            Error_Msg
6433                              (Data.Flags,
6434                               "? unknown source file %%",
6435                               NL.Location,
6436                               Project.Project);
6437                         end if;
6438
6439                         Again := True;
6440                         exit Source_Loop;
6441                      end if;
6442                   end if;
6443
6444                   Next (Iter);
6445                end loop Source_Loop;
6446
6447                exit Iter_Loop when not Again;
6448             end loop Iter_Loop;
6449          end;
6450       end if;
6451
6452       Search_Directories
6453         (Project,
6454          Data            => Data,
6455          For_All_Sources => Sources.Default and then Source_List_File.Default);
6456
6457       --  Check if all exceptions have been found
6458
6459       declare
6460          Source : Source_Id;
6461          Iter   : Source_Iterator;
6462          Found  : Boolean := False;
6463
6464       begin
6465          Iter := For_Each_Source (Data.Tree, Project.Project);
6466          loop
6467             Source := Prj.Element (Iter);
6468             exit when Source = No_Source;
6469
6470             --  If the full source path is unknown for this source_id, there
6471             --  could be several reasons:
6472             --    * we simply did not find the file itself, this is an error
6473             --    * we have a multi-unit source file. Another Source_Id from
6474             --      the same file has received the full path, so we need to
6475             --      propagate it.
6476
6477             if Source.Path = No_Path_Information then
6478                if Source.Naming_Exception = Yes then
6479                   if Source.Unit /= No_Unit_Index then
6480                      Found := False;
6481
6482                      if Source.Index /= 0 then  --  Only multi-unit files
6483                         declare
6484                            S : Source_Id :=
6485                                  Source_Files_Htable.Get
6486                                    (Data.Tree.Source_Files_HT, Source.File);
6487
6488                         begin
6489                            while S /= null loop
6490                               if S.Path /= No_Path_Information then
6491                                  Source.Path := S.Path;
6492                                  Found := True;
6493
6494                                  if Current_Verbosity = High then
6495                                     Debug_Output
6496                                       ("setting full path for "
6497                                        & Get_Name_String (Source.File)
6498                                        & " at" & Source.Index'Img
6499                                        & " to "
6500                                        & Get_Name_String (Source.Path.Name));
6501                                  end if;
6502
6503                                  exit;
6504                               end if;
6505
6506                               S := S.Next_With_File_Name;
6507                            end loop;
6508                         end;
6509                      end if;
6510
6511                      if not Found then
6512                         Error_Msg_Name_1 := Name_Id (Source.Display_File);
6513                         Error_Msg_Name_2 := Source.Unit.Name;
6514                         Error_Or_Warning
6515                           (Data.Flags, Data.Flags.Missing_Source_Files,
6516                            "source file %% for unit %% not found",
6517                            No_Location, Project.Project);
6518                      end if;
6519                   end if;
6520
6521                   if Source.Path = No_Path_Information then
6522                      Remove_Source (Data.Tree, Source, No_Source);
6523                   end if;
6524
6525                elsif Source.Naming_Exception = Inherited then
6526                   Remove_Source (Data.Tree, Source, No_Source);
6527                end if;
6528             end if;
6529
6530             Next (Iter);
6531          end loop;
6532       end;
6533
6534       --  It is an error if a source file name in a source list or in a source
6535       --  list file is not found.
6536
6537       if Has_Explicit_Sources then
6538          declare
6539             NL          : Name_Location;
6540             First_Error : Boolean;
6541
6542          begin
6543             NL := Source_Names_Htable.Get_First (Project.Source_Names);
6544             First_Error := True;
6545             while NL /= No_Name_Location loop
6546                if not NL.Found then
6547                   Err_Vars.Error_Msg_File_1 := NL.Name;
6548                   if First_Error then
6549                      Error_Or_Warning
6550                        (Data.Flags, Data.Flags.Missing_Source_Files,
6551                         "source file { not found",
6552                         NL.Location, Project.Project);
6553                      First_Error := False;
6554                   else
6555                      Error_Or_Warning
6556                        (Data.Flags, Data.Flags.Missing_Source_Files,
6557                         "\source file { not found",
6558                         NL.Location, Project.Project);
6559                   end if;
6560                end if;
6561
6562                NL := Source_Names_Htable.Get_Next (Project.Source_Names);
6563             end loop;
6564          end;
6565       end if;
6566    end Find_Sources;
6567
6568    ----------------
6569    -- Initialize --
6570    ----------------
6571
6572    procedure Initialize
6573      (Data      : out Tree_Processing_Data;
6574       Tree      : Project_Tree_Ref;
6575       Node_Tree : Prj.Tree.Project_Node_Tree_Ref;
6576       Flags     : Prj.Processing_Flags)
6577    is
6578    begin
6579       Data.Tree      := Tree;
6580       Data.Node_Tree := Node_Tree;
6581       Data.Flags     := Flags;
6582    end Initialize;
6583
6584    ----------
6585    -- Free --
6586    ----------
6587
6588    procedure Free (Data : in out Tree_Processing_Data) is
6589       pragma Unreferenced (Data);
6590    begin
6591       null;
6592    end Free;
6593
6594    ----------------
6595    -- Initialize --
6596    ----------------
6597
6598    procedure Initialize
6599      (Data    : in out Project_Processing_Data;
6600       Project : Project_Id)
6601    is
6602    begin
6603       Data.Project := Project;
6604    end Initialize;
6605
6606    ----------
6607    -- Free --
6608    ----------
6609
6610    procedure Free (Data : in out Project_Processing_Data) is
6611    begin
6612       Source_Names_Htable.Reset      (Data.Source_Names);
6613       Unit_Exceptions_Htable.Reset   (Data.Unit_Exceptions);
6614       Excluded_Sources_Htable.Reset  (Data.Excluded);
6615    end Free;
6616
6617    -------------------------------
6618    -- Check_File_Naming_Schemes --
6619    -------------------------------
6620
6621    procedure Check_File_Naming_Schemes
6622      (Project               : Project_Processing_Data;
6623       File_Name             : File_Name_Type;
6624       Alternate_Languages   : out Language_List;
6625       Language              : out Language_Ptr;
6626       Display_Language_Name : out Name_Id;
6627       Unit                  : out Name_Id;
6628       Lang_Kind             : out Language_Kind;
6629       Kind                  : out Source_Kind)
6630    is
6631       Filename : constant String := Get_Name_String (File_Name);
6632       Config   : Language_Config;
6633       Tmp_Lang : Language_Ptr;
6634
6635       Header_File : Boolean := False;
6636       --  True if we found at least one language for which the file is a header
6637       --  In such a case, we search for all possible languages where this is
6638       --  also a header (C and C++ for instance), since the file might be used
6639       --  for several such languages.
6640
6641       procedure Check_File_Based_Lang;
6642       --  Does the naming scheme test for file-based languages. For those,
6643       --  there is no Unit. Just check if the file name has the implementation
6644       --  or, if it is specified, the template suffix of the language.
6645       --
6646       --  Returns True if the file belongs to the current language and we
6647       --  should stop searching for matching languages. Not that a given header
6648       --  file could belong to several languages (C and C++ for instance). Thus
6649       --  if we found a header we'll check whether it matches other languages.
6650
6651       ---------------------------
6652       -- Check_File_Based_Lang --
6653       ---------------------------
6654
6655       procedure Check_File_Based_Lang is
6656       begin
6657          if not Header_File
6658            and then Suffix_Matches (Filename, Config.Naming_Data.Body_Suffix)
6659          then
6660             Unit     := No_Name;
6661             Kind     := Impl;
6662             Language := Tmp_Lang;
6663
6664             Debug_Output
6665               ("implementation of language ", Display_Language_Name);
6666
6667          elsif Suffix_Matches (Filename, Config.Naming_Data.Spec_Suffix) then
6668             Debug_Output
6669               ("header of language ", Display_Language_Name);
6670
6671             if Header_File then
6672                Alternate_Languages := new Language_List_Element'
6673                  (Language => Language,
6674                   Next     => Alternate_Languages);
6675
6676             else
6677                Header_File := True;
6678                Kind        := Spec;
6679                Unit        := No_Name;
6680                Language    := Tmp_Lang;
6681             end if;
6682          end if;
6683       end Check_File_Based_Lang;
6684
6685    --  Start of processing for Check_File_Naming_Schemes
6686
6687    begin
6688       Language              := No_Language_Index;
6689       Alternate_Languages   := null;
6690       Display_Language_Name := No_Name;
6691       Unit                  := No_Name;
6692       Lang_Kind             := File_Based;
6693       Kind                  := Spec;
6694
6695       Tmp_Lang := Project.Project.Languages;
6696       while Tmp_Lang /= No_Language_Index loop
6697          if Current_Verbosity = High then
6698             Debug_Output
6699               ("testing language "
6700                & Get_Name_String (Tmp_Lang.Name)
6701                & " Header_File=" & Header_File'Img);
6702          end if;
6703
6704          Display_Language_Name := Tmp_Lang.Display_Name;
6705          Config := Tmp_Lang.Config;
6706          Lang_Kind := Config.Kind;
6707
6708          case Config.Kind is
6709             when File_Based =>
6710                Check_File_Based_Lang;
6711                exit when Kind = Impl;
6712
6713             when Unit_Based =>
6714
6715                --  We know it belongs to a least a file_based language, no
6716                --  need to check unit-based ones.
6717
6718                if not Header_File then
6719                   Compute_Unit_Name
6720                     (File_Name => File_Name,
6721                      Naming    => Config.Naming_Data,
6722                      Kind      => Kind,
6723                      Unit      => Unit,
6724                      Project   => Project);
6725
6726                   if Unit /= No_Name then
6727                      Language    := Tmp_Lang;
6728                      exit;
6729                   end if;
6730                end if;
6731          end case;
6732
6733          Tmp_Lang := Tmp_Lang.Next;
6734       end loop;
6735
6736       if Language = No_Language_Index then
6737          Debug_Output ("not a source of any language");
6738       end if;
6739    end Check_File_Naming_Schemes;
6740
6741    -------------------
6742    -- Override_Kind --
6743    -------------------
6744
6745    procedure Override_Kind (Source : Source_Id; Kind : Source_Kind) is
6746    begin
6747       --  If the file was previously already associated with a unit, change it
6748
6749       if Source.Unit /= null
6750         and then Source.Kind in Spec_Or_Body
6751         and then Source.Unit.File_Names (Source.Kind) /= null
6752       then
6753          --  If we had another file referencing the same unit (for instance it
6754          --  was in an extended project), that source file is in fact invisible
6755          --  from now on, and in particular doesn't belong to the same unit.
6756          --  If the source is an inherited naming exception, then it may not
6757          --  really exist: the source potentially replaced is left untouched.
6758
6759          if Source.Unit.File_Names (Source.Kind) /= Source then
6760             Source.Unit.File_Names (Source.Kind).Unit := No_Unit_Index;
6761          end if;
6762
6763          Source.Unit.File_Names (Source.Kind) := null;
6764       end if;
6765
6766       Source.Kind := Kind;
6767
6768       if Current_Verbosity = High
6769         and then Source.File /= No_File
6770       then
6771          Debug_Output ("override kind for "
6772                        & Get_Name_String (Source.File)
6773                        & " idx=" & Source.Index'Img
6774                        & " kind=" & Source.Kind'Img);
6775       end if;
6776
6777       if Source.Unit /= null then
6778          if Source.Kind = Spec then
6779             Source.Unit.File_Names (Spec) := Source;
6780          else
6781             Source.Unit.File_Names (Impl) := Source;
6782          end if;
6783       end if;
6784    end Override_Kind;
6785
6786    ----------------
6787    -- Check_File --
6788    ----------------
6789
6790    procedure Check_File
6791      (Project           : in out Project_Processing_Data;
6792       Data              : in out Tree_Processing_Data;
6793       Source_Dir_Rank   : Natural;
6794       Path              : Path_Name_Type;
6795       Display_Path      : Path_Name_Type;
6796       File_Name         : File_Name_Type;
6797       Display_File_Name : File_Name_Type;
6798       Locally_Removed   : Boolean;
6799       For_All_Sources   : Boolean)
6800    is
6801       Name_Loc              : Name_Location :=
6802                                 Source_Names_Htable.Get
6803                                   (Project.Source_Names, File_Name);
6804       Check_Name            : Boolean := False;
6805       Alternate_Languages   : Language_List;
6806       Language              : Language_Ptr;
6807       Source                : Source_Id;
6808       Src_Ind               : Source_File_Index;
6809       Unit                  : Name_Id;
6810       Display_Language_Name : Name_Id;
6811       Lang_Kind             : Language_Kind;
6812       Kind                  : Source_Kind := Spec;
6813
6814    begin
6815       if Current_Verbosity = High then
6816          Debug_Increase_Indent
6817            ("checking file (rank=" & Source_Dir_Rank'Img & ")",
6818             Name_Id (Display_Path));
6819       end if;
6820
6821       if Name_Loc = No_Name_Location then
6822          Check_Name := For_All_Sources;
6823
6824       else
6825          if Name_Loc.Found then
6826
6827             --  Check if it is OK to have the same file name in several
6828             --  source directories.
6829
6830             if Source_Dir_Rank = Name_Loc.Source.Source_Dir_Rank then
6831                Error_Msg_File_1 := File_Name;
6832                Error_Msg
6833                  (Data.Flags,
6834                   "{ is found in several source directories",
6835                   Name_Loc.Location, Project.Project);
6836             end if;
6837
6838          else
6839             Name_Loc.Found := True;
6840
6841             Source_Names_Htable.Set
6842               (Project.Source_Names, File_Name, Name_Loc);
6843
6844             if Name_Loc.Source = No_Source then
6845                Check_Name := True;
6846
6847             else
6848                --  Set the full path for the source_id (which might have been
6849                --  created when parsing the naming exceptions, and therefore
6850                --  might not have the full path).
6851                --  We only set this for this source_id, but not for other
6852                --  source_id in the same file (case of multi-unit source files)
6853                --  For the latter, they will be set in Find_Sources when we
6854                --  check that all source_id have known full paths.
6855                --  Doing this later saves one htable lookup per file in the
6856                --  common case where the user is not using multi-unit files.
6857
6858                Name_Loc.Source.Path := (Path, Display_Path);
6859
6860                Source_Paths_Htable.Set
6861                  (Data.Tree.Source_Paths_HT, Path, Name_Loc.Source);
6862
6863                --  Check if this is a subunit
6864
6865                if Name_Loc.Source.Unit /= No_Unit_Index
6866                  and then Name_Loc.Source.Kind = Impl
6867                then
6868                   Src_Ind := Sinput.P.Load_Project_File
6869                     (Get_Name_String (Display_Path));
6870
6871                   if Sinput.P.Source_File_Is_Subunit (Src_Ind) then
6872                      Override_Kind (Name_Loc.Source, Sep);
6873                   end if;
6874                end if;
6875
6876                --  If this is an inherited naming exception, make sure that
6877                --  the naming exception it replaces is no longer a source.
6878
6879                if Name_Loc.Source.Naming_Exception = Inherited then
6880                   declare
6881                      Proj  : Project_Id := Name_Loc.Source.Project.Extends;
6882                      Iter  : Source_Iterator;
6883                      Src   : Source_Id;
6884                   begin
6885                      while Proj /= No_Project loop
6886                         Iter := For_Each_Source (Data.Tree, Proj);
6887                         Src := Prj.Element (Iter);
6888                         while Src /= No_Source loop
6889                            if Src.File = Name_Loc.Source.File then
6890                               Src.Replaced_By := Name_Loc.Source;
6891                               exit;
6892                            end if;
6893
6894                            Next (Iter);
6895                            Src := Prj.Element (Iter);
6896                         end loop;
6897
6898                         Proj := Proj.Extends;
6899                      end loop;
6900                   end;
6901
6902                   if Name_Loc.Source.Unit /= No_Unit_Index then
6903                      if Name_Loc.Source.Kind = Spec then
6904                         Name_Loc.Source.Unit.File_Names (Spec) :=
6905                           Name_Loc.Source;
6906
6907                      elsif Name_Loc.Source.Kind = Impl then
6908                         Name_Loc.Source.Unit.File_Names (Impl) :=
6909                           Name_Loc.Source;
6910                      end if;
6911
6912                      Units_Htable.Set
6913                        (Data.Tree.Units_HT,
6914                         Name_Loc.Source.Unit.Name,
6915                         Name_Loc.Source.Unit);
6916                   end if;
6917                end if;
6918             end if;
6919          end if;
6920       end if;
6921
6922       if Check_Name then
6923          Check_File_Naming_Schemes
6924            (Project               => Project,
6925             File_Name             => File_Name,
6926             Alternate_Languages   => Alternate_Languages,
6927             Language              => Language,
6928             Display_Language_Name => Display_Language_Name,
6929             Unit                  => Unit,
6930             Lang_Kind             => Lang_Kind,
6931             Kind                  => Kind);
6932
6933          if Language = No_Language_Index then
6934
6935             --  A file name in a list must be a source of a language
6936
6937             if Data.Flags.Error_On_Unknown_Language
6938               and then Name_Loc.Found
6939             then
6940                Error_Msg_File_1 := File_Name;
6941                Error_Msg
6942                  (Data.Flags,
6943                   "language unknown for {",
6944                   Name_Loc.Location, Project.Project);
6945             end if;
6946
6947          else
6948             Add_Source
6949               (Id                  => Source,
6950                Project             => Project.Project,
6951                Source_Dir_Rank     => Source_Dir_Rank,
6952                Lang_Id             => Language,
6953                Kind                => Kind,
6954                Data                => Data,
6955                Alternate_Languages => Alternate_Languages,
6956                File_Name           => File_Name,
6957                Display_File        => Display_File_Name,
6958                Unit                => Unit,
6959                Locally_Removed     => Locally_Removed,
6960                Path                => (Path, Display_Path));
6961
6962             --  If it is a source specified in a list, update the entry in
6963             --  the Source_Names table.
6964
6965             if Name_Loc.Found and then Name_Loc.Source = No_Source then
6966                Name_Loc.Source := Source;
6967                Source_Names_Htable.Set
6968                  (Project.Source_Names, File_Name, Name_Loc);
6969             end if;
6970          end if;
6971       end if;
6972
6973       Debug_Decrease_Indent;
6974    end Check_File;
6975
6976    ---------------------------------
6977    -- Expand_Subdirectory_Pattern --
6978    ---------------------------------
6979
6980    procedure Expand_Subdirectory_Pattern
6981      (Project       : Project_Id;
6982       Data          : in out Tree_Processing_Data;
6983       Patterns      : String_List_Id;
6984       Ignore        : String_List_Id;
6985       Search_For    : Search_Type;
6986       Resolve_Links : Boolean)
6987    is
6988       Shared : constant Shared_Project_Tree_Data_Access := Data.Tree.Shared;
6989
6990       package Recursive_Dirs is new GNAT.Dynamic_HTables.Simple_HTable
6991         (Header_Num => Header_Num,
6992          Element    => Boolean,
6993          No_Element => False,
6994          Key        => Path_Name_Type,
6995          Hash       => Hash,
6996          Equal      => "=");
6997       --  Hash table stores recursive source directories, to avoid looking
6998       --  several times, and to avoid cycles that may be introduced by symbolic
6999       --  links.
7000
7001       File_Pattern : GNAT.Regexp.Regexp;
7002       --  Pattern to use when matching file names
7003
7004       Visited : Recursive_Dirs.Instance;
7005
7006       procedure Find_Pattern
7007         (Pattern_Id : Name_Id;
7008          Rank       : Natural;
7009          Location   : Source_Ptr);
7010       --  Find a specific pattern
7011
7012       function Recursive_Find_Dirs
7013         (Path : Path_Information;
7014          Rank : Natural) return Boolean;
7015       --  Search all the subdirectories (recursively) of Path.
7016       --  Return True if at least one file or directory was processed
7017
7018       function Subdirectory_Matches
7019         (Path : Path_Information;
7020          Rank : Natural) return Boolean;
7021       --  Called when a matching directory was found. If the user is in fact
7022       --  searching for files, we then search for those files matching the
7023       --  pattern within the directory.
7024       --  Return True if at least one file or directory was processed
7025
7026       --------------------------
7027       -- Subdirectory_Matches --
7028       --------------------------
7029
7030       function Subdirectory_Matches
7031         (Path : Path_Information;
7032          Rank : Natural) return Boolean
7033       is
7034          Dir   : Dir_Type;
7035          Name  : String (1 .. 250);
7036          Last  : Natural;
7037          Found : Path_Information;
7038          Success : Boolean := False;
7039
7040       begin
7041          case Search_For is
7042             when Search_Directories =>
7043                Callback (Path, Rank);
7044                return True;
7045
7046             when Search_Files =>
7047                Open (Dir, Get_Name_String (Path.Display_Name));
7048                loop
7049                   Read (Dir, Name, Last);
7050                   exit when Last = 0;
7051
7052                   if Name (Name'First .. Last) /= "."
7053                     and then Name (Name'First .. Last) /= ".."
7054                     and then Match (Name (Name'First .. Last), File_Pattern)
7055                   then
7056                      Get_Name_String (Path.Display_Name);
7057                      Add_Str_To_Name_Buffer (Name (Name'First .. Last));
7058
7059                      Found.Display_Name := Name_Find;
7060                      Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
7061                      Found.Name := Name_Find;
7062
7063                      Callback (Found, Rank);
7064                      Success := True;
7065                   end if;
7066                end loop;
7067
7068                Close (Dir);
7069
7070                return Success;
7071          end case;
7072       end Subdirectory_Matches;
7073
7074       -------------------------
7075       -- Recursive_Find_Dirs --
7076       -------------------------
7077
7078       function Recursive_Find_Dirs
7079         (Path : Path_Information;
7080          Rank : Natural) return Boolean
7081       is
7082          Path_Str : constant String := Get_Name_String (Path.Display_Name);
7083          Dir   : Dir_Type;
7084          Name  : String (1 .. 250);
7085          Last  : Natural;
7086          Success : Boolean := False;
7087
7088       begin
7089          Debug_Output ("looking for subdirs of ", Name_Id (Path.Display_Name));
7090
7091          if Recursive_Dirs.Get (Visited, Path.Name) then
7092             return Success;
7093          end if;
7094
7095          Recursive_Dirs.Set (Visited, Path.Name, True);
7096
7097          Success := Subdirectory_Matches (Path, Rank) or Success;
7098
7099          Open (Dir, Path_Str);
7100
7101          loop
7102             Read (Dir, Name, Last);
7103             exit when Last = 0;
7104
7105             if Name (1 .. Last) /= "."
7106                  and then
7107                Name (1 .. Last) /= ".."
7108             then
7109                declare
7110                   Path_Name : constant String :=
7111                     Normalize_Pathname
7112                       (Name           => Name (1 .. Last),
7113                        Directory      => Path_Str,
7114                        Resolve_Links  => Resolve_Links)
7115                     & Directory_Separator;
7116                   Path2     : Path_Information;
7117                   OK        : Boolean := True;
7118
7119                begin
7120                   if Is_Directory (Path_Name) then
7121                      if Ignore /= Nil_String then
7122                         declare
7123                            Dir_Name : String := Name (1 .. Last);
7124                            List     : String_List_Id := Ignore;
7125
7126                         begin
7127                            Canonical_Case_File_Name (Dir_Name);
7128
7129                            while List /= Nil_String loop
7130                               Get_Name_String
7131                                 (Shared.String_Elements.Table (List).Value);
7132                               Canonical_Case_File_Name
7133                                 (Name_Buffer (1 .. Name_Len));
7134                               OK := Name_Buffer (1 .. Name_Len) /= Dir_Name;
7135                               exit when not OK;
7136                               List := Shared.String_Elements.Table (List).Next;
7137                            end loop;
7138                         end;
7139                      end if;
7140
7141                      if OK then
7142                         Name_Len := 0;
7143                         Add_Str_To_Name_Buffer (Path_Name);
7144                         Path2.Display_Name := Name_Find;
7145
7146                         Canonical_Case_File_Name (Name_Buffer (1 .. Name_Len));
7147                         Path2.Name := Name_Find;
7148
7149                         Success :=
7150                           Recursive_Find_Dirs (Path2, Rank) or Success;
7151                      end if;
7152                   end if;
7153                end;
7154             end if;
7155          end loop;
7156
7157          Close (Dir);
7158
7159          return Success;
7160
7161       exception
7162          when Directory_Error =>
7163             return Success;
7164       end Recursive_Find_Dirs;
7165
7166       ------------------
7167       -- Find_Pattern --
7168       ------------------
7169
7170       procedure Find_Pattern
7171         (Pattern_Id : Name_Id;
7172          Rank       : Natural;
7173          Location   : Source_Ptr)
7174       is
7175          Pattern     : constant String := Get_Name_String (Pattern_Id);
7176          Pattern_End : Natural := Pattern'Last;
7177          Recursive   : Boolean;
7178          Dir         : File_Name_Type;
7179          Path_Name   : Path_Information;
7180          Dir_Exists  : Boolean;
7181          Has_Error   : Boolean := False;
7182          Success     : Boolean;
7183
7184       begin
7185          Debug_Increase_Indent ("Find_Pattern", Pattern_Id);
7186
7187          --  If we are looking for files, find the pattern for the files
7188
7189          if Search_For = Search_Files then
7190             while Pattern_End >= Pattern'First
7191               and then Pattern (Pattern_End) /= '/'
7192               and then Pattern (Pattern_End) /= Directory_Separator
7193             loop
7194                Pattern_End := Pattern_End - 1;
7195             end loop;
7196
7197             if Pattern_End = Pattern'Last then
7198                Err_Vars.Error_Msg_File_1 := File_Name_Type (Pattern_Id);
7199                Error_Or_Warning
7200                  (Data.Flags, Data.Flags.Missing_Source_Files,
7201                   "Missing file name or pattern in {", Location, Project);
7202                return;
7203             end if;
7204
7205             if Current_Verbosity = High then
7206                Debug_Indent;
7207                Write_Str ("file_pattern=");
7208                Write_Str (Pattern (Pattern_End + 1 .. Pattern'Last));
7209                Write_Str (" dir_pattern=");
7210                Write_Line (Pattern (Pattern'First .. Pattern_End));
7211             end if;
7212
7213             File_Pattern := Compile
7214               (Pattern (Pattern_End + 1 .. Pattern'Last),
7215                Glob           => True,
7216                Case_Sensitive => File_Names_Case_Sensitive);
7217
7218             --  If we had just "*.gpr", this is equivalent to "./*.gpr"
7219
7220             if Pattern_End > Pattern'First then
7221                Pattern_End := Pattern_End - 1; --  Skip directory separator
7222             end if;
7223          end if;
7224
7225          Recursive :=
7226            Pattern_End - 1 >= Pattern'First
7227            and then Pattern (Pattern_End - 1 .. Pattern_End) = "**"
7228            and then (Pattern_End - 1 = Pattern'First
7229                      or else Pattern (Pattern_End - 2) = '/'
7230                      or else Pattern (Pattern_End - 2) = Directory_Separator);
7231
7232          if Recursive then
7233             Pattern_End := Pattern_End - 2;
7234             if Pattern_End > Pattern'First then
7235                Pattern_End := Pattern_End - 1; --  Skip '/'
7236             end if;
7237          end if;
7238
7239          Name_Len := Pattern_End - Pattern'First + 1;
7240          Name_Buffer (1 .. Name_Len) := Pattern (Pattern'First .. Pattern_End);
7241          Dir := Name_Find;
7242
7243          Locate_Directory
7244            (Project     => Project,
7245             Name        => Dir,
7246             Path        => Path_Name,
7247             Dir_Exists  => Dir_Exists,
7248             Data        => Data,
7249             Must_Exist  => False);
7250
7251          if not Dir_Exists then
7252             Err_Vars.Error_Msg_File_1 := Dir;
7253             Error_Or_Warning
7254               (Data.Flags, Data.Flags.Missing_Source_Files,
7255                "{ is not a valid directory", Location, Project);
7256             Has_Error := Data.Flags.Missing_Source_Files = Error;
7257          end if;
7258
7259          if not Has_Error then
7260
7261             --  Links have been resolved if necessary, and Path_Name
7262             --  always ends with a directory separator.
7263
7264             if Recursive then
7265                Success := Recursive_Find_Dirs (Path_Name, Rank);
7266             else
7267                Success := Subdirectory_Matches (Path_Name, Rank);
7268             end if;
7269
7270             if not Success then
7271                case Search_For is
7272                   when Search_Directories =>
7273                      null;  --  Error can't occur
7274
7275                   when Search_Files =>
7276                      Err_Vars.Error_Msg_File_1 := File_Name_Type (Pattern_Id);
7277                      Error_Or_Warning
7278                        (Data.Flags, Data.Flags.Missing_Source_Files,
7279                         "file { not found", Location, Project);
7280                end case;
7281             end if;
7282          end if;
7283
7284          Debug_Decrease_Indent ("done Find_Pattern");
7285       end Find_Pattern;
7286
7287       --  Local variables
7288
7289       Pattern_Id : String_List_Id := Patterns;
7290       Element    : String_Element;
7291       Rank       : Natural := 1;
7292
7293    --  Start of processing for Expand_Subdirectory_Pattern
7294
7295    begin
7296       while Pattern_Id /= Nil_String loop
7297          Element := Shared.String_Elements.Table (Pattern_Id);
7298          Find_Pattern (Element.Value, Rank, Element.Location);
7299          Rank := Rank + 1;
7300          Pattern_Id := Element.Next;
7301       end loop;
7302
7303       Recursive_Dirs.Reset (Visited);
7304    end Expand_Subdirectory_Pattern;
7305
7306    ------------------------
7307    -- Search_Directories --
7308    ------------------------
7309
7310    procedure Search_Directories
7311      (Project         : in out Project_Processing_Data;
7312       Data            : in out Tree_Processing_Data;
7313       For_All_Sources : Boolean)
7314    is
7315       Shared : constant Shared_Project_Tree_Data_Access := Data.Tree.Shared;
7316
7317       Source_Dir        : String_List_Id;
7318       Element           : String_Element;
7319       Src_Dir_Rank      : Number_List_Index;
7320       Num_Nod           : Number_Node;
7321       Dir               : Dir_Type;
7322       Name              : String (1 .. 1_000);
7323       Last              : Natural;
7324       File_Name         : File_Name_Type;
7325       Display_File_Name : File_Name_Type;
7326
7327    begin
7328       Debug_Increase_Indent ("looking for sources of", Project.Project.Name);
7329
7330       --  Loop through subdirectories
7331
7332       Src_Dir_Rank := Project.Project.Source_Dir_Ranks;
7333
7334       Source_Dir := Project.Project.Source_Dirs;
7335       while Source_Dir /= Nil_String loop
7336          begin
7337             Num_Nod := Shared.Number_Lists.Table (Src_Dir_Rank);
7338             Element := Shared.String_Elements.Table (Source_Dir);
7339
7340             --  Use Element.Value in this test, not Display_Value, because we
7341             --  want the symbolic links to be resolved when appropriate.
7342
7343             if Element.Value /= No_Name then
7344                declare
7345                   Source_Directory : constant String :=
7346                                        Get_Name_String (Element.Value)
7347                                          & Directory_Separator;
7348
7349                   Dir_Last : constant Natural :=
7350                                Compute_Directory_Last (Source_Directory);
7351
7352                   Display_Source_Directory : constant String :=
7353                                                Get_Name_String
7354                                                  (Element.Display_Value)
7355                                                   & Directory_Separator;
7356                   --  Display_Source_Directory is to allow us to open a UTF-8
7357                   --  encoded directory on Windows.
7358
7359                begin
7360                   if Current_Verbosity = High then
7361                      Debug_Increase_Indent
7362                        ("Source_Dir (node=" & Num_Nod.Number'Img & ") """
7363                         & Source_Directory (Source_Directory'First .. Dir_Last)
7364                         & '"');
7365                   end if;
7366
7367                   --  We look to every entry in the source directory
7368
7369                   Open (Dir, Display_Source_Directory);
7370
7371                   loop
7372                      Read (Dir, Name, Last);
7373                      exit when Last = 0;
7374
7375                      --  In fast project loading mode (without -eL), the user
7376                      --  guarantees that no directory has a name which is a
7377                      --  valid source name, so we can avoid doing a system call
7378                      --  here. This provides a very significant speed up on
7379                      --  slow file systems (remote files for instance).
7380
7381                      if not Opt.Follow_Links_For_Files
7382                        or else Is_Regular_File
7383                                  (Display_Source_Directory & Name (1 .. Last))
7384                      then
7385                         Name_Len := Last;
7386                         Name_Buffer (1 .. Name_Len) := Name (1 .. Last);
7387                         Display_File_Name := Name_Find;
7388
7389                         if Osint.File_Names_Case_Sensitive then
7390                            File_Name := Display_File_Name;
7391                         else
7392                            Canonical_Case_File_Name
7393                              (Name_Buffer (1 .. Name_Len));
7394                            File_Name := Name_Find;
7395                         end if;
7396
7397                         declare
7398                            Path_Name : constant String :=
7399                                          Normalize_Pathname
7400                                            (Name (1 .. Last),
7401                                             Directory       =>
7402                                               Source_Directory
7403                                                 (Source_Directory'First ..
7404                                                  Dir_Last),
7405                                             Resolve_Links   =>
7406                                               Opt.Follow_Links_For_Files,
7407                                             Case_Sensitive => True);
7408
7409                            Path      : Path_Name_Type;
7410                            FF        : File_Found :=
7411                                          Excluded_Sources_Htable.Get
7412                                            (Project.Excluded, File_Name);
7413                            To_Remove : Boolean := False;
7414
7415                         begin
7416                            Name_Len := Path_Name'Length;
7417                            Name_Buffer (1 .. Name_Len) := Path_Name;
7418
7419                            if Osint.File_Names_Case_Sensitive then
7420                               Path := Name_Find;
7421                            else
7422                               Canonical_Case_File_Name
7423                                 (Name_Buffer (1 .. Name_Len));
7424                               Path := Name_Find;
7425                            end if;
7426
7427                            if FF /= No_File_Found then
7428                               if not FF.Found then
7429                                  FF.Found := True;
7430                                  Excluded_Sources_Htable.Set
7431                                    (Project.Excluded, File_Name, FF);
7432
7433                                  Debug_Output
7434                                    ("excluded source ",
7435                                     Name_Id (Display_File_Name));
7436
7437                                  --  Will mark the file as removed, but we
7438                                  --  still need to add it to the list: if we
7439                                  --  don't, the file will not appear in the
7440                                  --  mapping file and will cause the compiler
7441                                  --  to fail.
7442
7443                                  To_Remove := True;
7444                               end if;
7445                            end if;
7446
7447                            --  Preserve the user's original casing and use of
7448                            --  links. The display_value (a directory) already
7449                            --  ends with a directory separator by construction,
7450                            --  so no need to add one.
7451
7452                            Get_Name_String (Element.Display_Value);
7453                            Get_Name_String_And_Append (Display_File_Name);
7454
7455                            Check_File
7456                              (Project           => Project,
7457                               Source_Dir_Rank   => Num_Nod.Number,
7458                               Data              => Data,
7459                               Path              => Path,
7460                               Display_Path      => Name_Find,
7461                               File_Name         => File_Name,
7462                               Locally_Removed   => To_Remove,
7463                               Display_File_Name => Display_File_Name,
7464                               For_All_Sources   => For_All_Sources);
7465                         end;
7466
7467                      else
7468                         if Current_Verbosity = High then
7469                            Debug_Output ("ignore " & Name (1 .. Last));
7470                         end if;
7471                      end if;
7472                   end loop;
7473
7474                   Debug_Decrease_Indent;
7475                   Close (Dir);
7476                end;
7477             end if;
7478
7479          exception
7480             when Directory_Error =>
7481                null;
7482          end;
7483
7484          Source_Dir := Element.Next;
7485          Src_Dir_Rank := Num_Nod.Next;
7486       end loop;
7487
7488       Debug_Decrease_Indent ("end looking for sources.");
7489    end Search_Directories;
7490
7491    ----------------------------
7492    -- Load_Naming_Exceptions --
7493    ----------------------------
7494
7495    procedure Load_Naming_Exceptions
7496      (Project : in out Project_Processing_Data;
7497       Data    : in out Tree_Processing_Data)
7498    is
7499       Source : Source_Id;
7500       Iter   : Source_Iterator;
7501
7502    begin
7503       Iter := For_Each_Source (Data.Tree, Project.Project);
7504       loop
7505          Source := Prj.Element (Iter);
7506          exit when Source = No_Source;
7507
7508          --  An excluded file cannot also be an exception file name
7509
7510          if Excluded_Sources_Htable.Get (Project.Excluded, Source.File) /=
7511                                                                  No_File_Found
7512          then
7513             Error_Msg_File_1 := Source.File;
7514             Error_Msg
7515               (Data.Flags,
7516                "{ cannot be both excluded and an exception file name",
7517                No_Location, Project.Project);
7518          end if;
7519
7520          Debug_Output
7521            ("naming exception: adding source file to source_Names: ",
7522             Name_Id (Source.File));
7523
7524          Source_Names_Htable.Set
7525            (Project.Source_Names,
7526             K => Source.File,
7527             E => Name_Location'
7528                   (Name     => Source.File,
7529                    Location => Source.Location,
7530                    Source   => Source,
7531                    Listed   => False,
7532                    Found    => False));
7533
7534          --  If this is an Ada exception, record in table Unit_Exceptions
7535
7536          if Source.Unit /= No_Unit_Index then
7537             declare
7538                Unit_Except : Unit_Exception :=
7539                                Unit_Exceptions_Htable.Get
7540                                  (Project.Unit_Exceptions, Source.Unit.Name);
7541
7542             begin
7543                Unit_Except.Name := Source.Unit.Name;
7544
7545                if Source.Kind = Spec then
7546                   Unit_Except.Spec := Source.File;
7547                else
7548                   Unit_Except.Impl := Source.File;
7549                end if;
7550
7551                Unit_Exceptions_Htable.Set
7552                  (Project.Unit_Exceptions, Source.Unit.Name, Unit_Except);
7553             end;
7554          end if;
7555
7556          Next (Iter);
7557       end loop;
7558    end Load_Naming_Exceptions;
7559
7560    ----------------------
7561    -- Look_For_Sources --
7562    ----------------------
7563
7564    procedure Look_For_Sources
7565      (Project : in out Project_Processing_Data;
7566       Data    : in out Tree_Processing_Data)
7567    is
7568       Object_Files : Object_File_Names_Htable.Instance;
7569       Iter         : Source_Iterator;
7570       Src          : Source_Id;
7571
7572       procedure Check_Object (Src : Source_Id);
7573       --  Check if object file name of Src is already used in the project tree,
7574       --  and report an error if so.
7575
7576       procedure Check_Object_Files;
7577       --  Check that no two sources of this project have the same object file
7578
7579       procedure Mark_Excluded_Sources;
7580       --  Mark as such the sources that are declared as excluded
7581
7582       procedure Check_Missing_Sources;
7583       --  Check whether one of the languages has no sources, and report an
7584       --  error when appropriate
7585
7586       procedure Get_Sources_From_Source_Info;
7587       --  Get the source information from the tables that were created when a
7588       --  source info file was read.
7589
7590       ---------------------------
7591       -- Check_Missing_Sources --
7592       ---------------------------
7593
7594       procedure Check_Missing_Sources is
7595          Extending    : constant Boolean :=
7596                           Project.Project.Extends /= No_Project;
7597          Language     : Language_Ptr;
7598          Source       : Source_Id;
7599          Alt_Lang     : Language_List;
7600          Continuation : Boolean := False;
7601          Iter         : Source_Iterator;
7602       begin
7603          if not Project.Project.Externally_Built
7604            and then not Extending
7605          then
7606             Language := Project.Project.Languages;
7607             while Language /= No_Language_Index loop
7608
7609                --  If there are no sources for this language, check if there
7610                --  are sources for which this is an alternate language.
7611
7612                if Language.First_Source = No_Source
7613                  and then (Data.Flags.Require_Sources_Other_Lang
7614                            or else Language.Name = Name_Ada)
7615                then
7616                   Iter := For_Each_Source (In_Tree => Data.Tree,
7617                                            Project => Project.Project);
7618                   Source_Loop : loop
7619                      Source := Element (Iter);
7620                      exit Source_Loop when Source = No_Source
7621                        or else Source.Language = Language;
7622
7623                      Alt_Lang := Source.Alternate_Languages;
7624                      while Alt_Lang /= null loop
7625                         exit Source_Loop when Alt_Lang.Language = Language;
7626                         Alt_Lang := Alt_Lang.Next;
7627                      end loop;
7628
7629                      Next (Iter);
7630                   end loop Source_Loop;
7631
7632                   if Source = No_Source then
7633                      Report_No_Sources
7634                        (Project.Project,
7635                         Get_Name_String (Language.Display_Name),
7636                         Data,
7637                         Project.Source_List_File_Location,
7638                         Continuation);
7639                      Continuation := True;
7640                   end if;
7641                end if;
7642
7643                Language := Language.Next;
7644             end loop;
7645          end if;
7646       end Check_Missing_Sources;
7647
7648       ------------------
7649       -- Check_Object --
7650       ------------------
7651
7652       procedure Check_Object (Src : Source_Id) is
7653          Source : Source_Id;
7654
7655       begin
7656          Source := Object_File_Names_Htable.Get (Object_Files, Src.Object);
7657
7658          --  We cannot just check on "Source /= Src", since we might have
7659          --  two different entries for the same file (and since that's
7660          --  the same file it is expected that it has the same object)
7661
7662          if Source /= No_Source
7663            and then Source.Replaced_By = No_Source
7664            and then Source.Path /= Src.Path
7665            and then Is_Extending (Src.Project, Source.Project)
7666          then
7667             Error_Msg_File_1 := Src.File;
7668             Error_Msg_File_2 := Source.File;
7669             Error_Msg
7670               (Data.Flags,
7671                "{ and { have the same object file name",
7672                No_Location, Project.Project);
7673
7674          else
7675             Object_File_Names_Htable.Set (Object_Files, Src.Object, Src);
7676          end if;
7677       end Check_Object;
7678
7679       ---------------------------
7680       -- Mark_Excluded_Sources --
7681       ---------------------------
7682
7683       procedure Mark_Excluded_Sources is
7684          Source   : Source_Id := No_Source;
7685          Excluded : File_Found;
7686          Proj     : Project_Id;
7687
7688       begin
7689          --  Minor optimization: if there are no excluded files, no need to
7690          --  traverse the list of sources. We cannot however also check whether
7691          --  the existing exceptions have ".Found" set to True (indicating we
7692          --  found them before) because we need to do some final processing on
7693          --  them in any case.
7694
7695          if Excluded_Sources_Htable.Get_First (Project.Excluded) /=
7696                                                              No_File_Found
7697          then
7698             Proj := Project.Project;
7699             while Proj /= No_Project loop
7700                Iter := For_Each_Source (Data.Tree, Proj);
7701                while Prj.Element (Iter) /= No_Source loop
7702                   Source   := Prj.Element (Iter);
7703                   Excluded := Excluded_Sources_Htable.Get
7704                     (Project.Excluded, Source.File);
7705
7706                   if Excluded /= No_File_Found then
7707                      Source.Locally_Removed := True;
7708                      Source.In_Interfaces   := False;
7709
7710                      if Current_Verbosity = High then
7711                         Debug_Indent;
7712                         Write_Str ("removing file ");
7713                         Write_Line
7714                           (Get_Name_String (Excluded.File)
7715                            & " " & Get_Name_String (Source.Project.Name));
7716                      end if;
7717
7718                      Excluded_Sources_Htable.Remove
7719                        (Project.Excluded, Source.File);
7720                   end if;
7721
7722                   Next (Iter);
7723                end loop;
7724
7725                Proj := Proj.Extends;
7726             end loop;
7727          end if;
7728
7729          --  If we have any excluded element left, that means we did not find
7730          --  the source file
7731
7732          Excluded := Excluded_Sources_Htable.Get_First (Project.Excluded);
7733          while Excluded /= No_File_Found loop
7734             if not Excluded.Found then
7735
7736                --  Check if the file belongs to another imported project to
7737                --  provide a better error message.
7738
7739                Src := Find_Source
7740                  (In_Tree          => Data.Tree,
7741                   Project          => Project.Project,
7742                   In_Imported_Only => True,
7743                   Base_Name        => Excluded.File);
7744
7745                Err_Vars.Error_Msg_File_1 := Excluded.File;
7746
7747                if Src = No_Source then
7748                   if Excluded.Excl_File = No_File then
7749                      Error_Msg
7750                        (Data.Flags,
7751                         "unknown file {", Excluded.Location, Project.Project);
7752
7753                   else
7754                      Error_Msg
7755                     (Data.Flags,
7756                      "in " &
7757                      Get_Name_String (Excluded.Excl_File) & ":" &
7758                      No_Space_Img (Excluded.Excl_Line) &
7759                      ": unknown file {", Excluded.Location, Project.Project);
7760                   end if;
7761
7762                else
7763                   if Excluded.Excl_File = No_File then
7764                      Error_Msg
7765                        (Data.Flags,
7766                         "cannot remove a source from an imported project: {",
7767                         Excluded.Location, Project.Project);
7768
7769                   else
7770                      Error_Msg
7771                        (Data.Flags,
7772                         "in " &
7773                         Get_Name_String (Excluded.Excl_File) & ":" &
7774                           No_Space_Img (Excluded.Excl_Line) &
7775                         ": cannot remove a source from an imported project: {",
7776                         Excluded.Location, Project.Project);
7777                   end if;
7778                end if;
7779             end if;
7780
7781             Excluded := Excluded_Sources_Htable.Get_Next (Project.Excluded);
7782          end loop;
7783       end Mark_Excluded_Sources;
7784
7785       ------------------------
7786       -- Check_Object_Files --
7787       ------------------------
7788
7789       procedure Check_Object_Files is
7790          Iter    : Source_Iterator;
7791          Src_Id  : Source_Id;
7792          Src_Ind : Source_File_Index;
7793
7794       begin
7795          Iter := For_Each_Source (Data.Tree);
7796          loop
7797             Src_Id := Prj.Element (Iter);
7798             exit when Src_Id = No_Source;
7799
7800             if Is_Compilable (Src_Id)
7801               and then Src_Id.Language.Config.Object_Generated
7802               and then Is_Extending (Project.Project, Src_Id.Project)
7803             then
7804                if Src_Id.Unit = No_Unit_Index then
7805                   if Src_Id.Kind = Impl then
7806                      Check_Object (Src_Id);
7807                   end if;
7808
7809                else
7810                   case Src_Id.Kind is
7811                      when Spec =>
7812                         if Other_Part (Src_Id) = No_Source then
7813                            Check_Object (Src_Id);
7814                         end if;
7815
7816                      when Sep =>
7817                         null;
7818
7819                      when Impl =>
7820                         if Other_Part (Src_Id) /= No_Source then
7821                            Check_Object (Src_Id);
7822
7823                         else
7824                            --  Check if it is a subunit
7825
7826                            Src_Ind :=
7827                              Sinput.P.Load_Project_File
7828                                (Get_Name_String (Src_Id.Path.Display_Name));
7829
7830                            if Sinput.P.Source_File_Is_Subunit (Src_Ind) then
7831                               Override_Kind (Src_Id, Sep);
7832                            else
7833                               Check_Object (Src_Id);
7834                            end if;
7835                         end if;
7836                   end case;
7837                end if;
7838             end if;
7839
7840             Next (Iter);
7841          end loop;
7842       end Check_Object_Files;
7843
7844       ----------------------------------
7845       -- Get_Sources_From_Source_Info --
7846       ----------------------------------
7847
7848       procedure Get_Sources_From_Source_Info is
7849          Iter    : Source_Info_Iterator;
7850          Src     : Source_Info;
7851          Id      : Source_Id;
7852          Lang_Id : Language_Ptr;
7853
7854       begin
7855          Initialize (Iter, Project.Project.Name);
7856
7857          loop
7858             Src := Source_Info_Of (Iter);
7859
7860             exit when Src = No_Source_Info;
7861
7862             Id := new Source_Data;
7863
7864             Id.Project := Project.Project;
7865
7866             Lang_Id := Project.Project.Languages;
7867             while Lang_Id /= No_Language_Index
7868               and then Lang_Id.Name /= Src.Language
7869             loop
7870                Lang_Id := Lang_Id.Next;
7871             end loop;
7872
7873             if Lang_Id = No_Language_Index then
7874                Prj.Com.Fail
7875                  ("unknown language " &
7876                   Get_Name_String (Src.Language) &
7877                   " for project " &
7878                   Get_Name_String (Src.Project) &
7879                   " in source info file");
7880             end if;
7881
7882             Id.Language := Lang_Id;
7883             Id.Kind     := Src.Kind;
7884             Id.Index    := Src.Index;
7885
7886             Id.Path :=
7887               (Path_Name_Type (Src.Display_Path_Name),
7888                Path_Name_Type (Src.Path_Name));
7889
7890             Name_Len := 0;
7891             Add_Str_To_Name_Buffer
7892               (Directories.Simple_Name (Get_Name_String (Src.Path_Name)));
7893             Id.File := Name_Find;
7894
7895             Id.Next_With_File_Name :=
7896               Source_Files_Htable.Get (Data.Tree.Source_Files_HT, Id.File);
7897             Source_Files_Htable.Set (Data.Tree.Source_Files_HT, Id.File, Id);
7898
7899             Name_Len := 0;
7900             Add_Str_To_Name_Buffer
7901               (Directories.Simple_Name
7902                  (Get_Name_String (Src.Display_Path_Name)));
7903             Id.Display_File := Name_Find;
7904
7905             Id.Dep_Name         :=
7906               Dependency_Name (Id.File, Id.Language.Config.Dependency_Kind);
7907             Id.Naming_Exception := Src.Naming_Exception;
7908             Id.Object           :=
7909               Object_Name (Id.File, Id.Language.Config.Object_File_Suffix);
7910             Id.Switches         := Switches_Name (Id.File);
7911
7912             --  Add the source id to the Unit_Sources_HT hash table, if the
7913             --  unit name is not null.
7914
7915             if Src.Kind /= Sep and then Src.Unit_Name /= No_Name then
7916
7917                declare
7918                   UData : Unit_Index :=
7919                             Units_Htable.Get
7920                               (Data.Tree.Units_HT, Src.Unit_Name);
7921                begin
7922                   if UData = No_Unit_Index then
7923                      UData := new Unit_Data;
7924                      UData.Name := Src.Unit_Name;
7925                      Units_Htable.Set
7926                        (Data.Tree.Units_HT, Src.Unit_Name, UData);
7927                   end if;
7928
7929                   Id.Unit := UData;
7930                end;
7931
7932                --  Note that this updates Unit information as well
7933
7934                Override_Kind (Id, Id.Kind);
7935             end if;
7936
7937             if Src.Index /= 0 then
7938                Project.Project.Has_Multi_Unit_Sources := True;
7939             end if;
7940
7941             --  Add the source to the language list
7942
7943             Id.Next_In_Lang := Id.Language.First_Source;
7944             Id.Language.First_Source := Id;
7945
7946             Next (Iter);
7947          end loop;
7948       end Get_Sources_From_Source_Info;
7949
7950    --  Start of processing for Look_For_Sources
7951
7952    begin
7953       if Data.Tree.Source_Info_File_Exists then
7954          Get_Sources_From_Source_Info;
7955
7956       else
7957          if Project.Project.Source_Dirs /= Nil_String then
7958             Find_Excluded_Sources (Project, Data);
7959
7960             if Project.Project.Languages /= No_Language_Index then
7961                Load_Naming_Exceptions (Project, Data);
7962                Find_Sources (Project, Data);
7963                Mark_Excluded_Sources;
7964                Check_Object_Files;
7965                Check_Missing_Sources;
7966             end if;
7967          end if;
7968
7969          Object_File_Names_Htable.Reset (Object_Files);
7970       end if;
7971    end Look_For_Sources;
7972
7973    ------------------
7974    -- Path_Name_Of --
7975    ------------------
7976
7977    function Path_Name_Of
7978      (File_Name : File_Name_Type;
7979       Directory : Path_Name_Type) return String
7980    is
7981       Result        : String_Access;
7982       The_Directory : constant String := Get_Name_String (Directory);
7983
7984    begin
7985       Debug_Output ("Path_Name_Of file name=", Name_Id (File_Name));
7986       Debug_Output ("Path_Name_Of directory=", Name_Id (Directory));
7987       Get_Name_String (File_Name);
7988       Result :=
7989         Locate_Regular_File
7990           (File_Name => Name_Buffer (1 .. Name_Len),
7991            Path      => The_Directory);
7992
7993       if Result = null then
7994          return "";
7995       else
7996          declare
7997             R : constant String := Result.all;
7998          begin
7999             Free (Result);
8000             return R;
8001          end;
8002       end if;
8003    end Path_Name_Of;
8004
8005    -------------------
8006    -- Remove_Source --
8007    -------------------
8008
8009    procedure Remove_Source
8010      (Tree        : Project_Tree_Ref;
8011       Id          : Source_Id;
8012       Replaced_By : Source_Id)
8013    is
8014       Source : Source_Id;
8015
8016    begin
8017       if Current_Verbosity = High then
8018          Debug_Indent;
8019          Write_Str ("removing source ");
8020          Write_Str (Get_Name_String (Id.File));
8021
8022          if Id.Index /= 0 then
8023             Write_Str (" at" & Id.Index'Img);
8024          end if;
8025
8026          Write_Eol;
8027       end if;
8028
8029       if Replaced_By /= No_Source then
8030          Id.Replaced_By := Replaced_By;
8031          Replaced_By.Declared_In_Interfaces := Id.Declared_In_Interfaces;
8032
8033          if Id.File /= Replaced_By.File then
8034             declare
8035                Replacement : constant File_Name_Type :=
8036                                Replaced_Source_HTable.Get
8037                                  (Tree.Replaced_Sources, Id.File);
8038
8039             begin
8040                Replaced_Source_HTable.Set
8041                  (Tree.Replaced_Sources, Id.File, Replaced_By.File);
8042
8043                if Replacement = No_File then
8044                   Tree.Replaced_Source_Number :=
8045                     Tree.Replaced_Source_Number + 1;
8046                end if;
8047             end;
8048          end if;
8049       end if;
8050
8051       Id.In_Interfaces := False;
8052       Id.Locally_Removed := True;
8053
8054       --  ??? Should we remove the source from the unit ? The file is not used,
8055       --  so probably should not be referenced from the unit. On the other hand
8056       --  it might give useful additional info
8057       --        if Id.Unit /= null then
8058       --           Id.Unit.File_Names (Id.Kind) := null;
8059       --        end if;
8060
8061       Source := Id.Language.First_Source;
8062
8063       if Source = Id then
8064          Id.Language.First_Source := Id.Next_In_Lang;
8065
8066       else
8067          while Source.Next_In_Lang /= Id loop
8068             Source := Source.Next_In_Lang;
8069          end loop;
8070
8071          Source.Next_In_Lang := Id.Next_In_Lang;
8072       end if;
8073    end Remove_Source;
8074
8075    -----------------------
8076    -- Report_No_Sources --
8077    -----------------------
8078
8079    procedure Report_No_Sources
8080      (Project      : Project_Id;
8081       Lang_Name    : String;
8082       Data         : Tree_Processing_Data;
8083       Location     : Source_Ptr;
8084       Continuation : Boolean := False)
8085    is
8086    begin
8087       case Data.Flags.When_No_Sources is
8088          when Silent =>
8089             null;
8090
8091          when Warning | Error =>
8092             declare
8093                Msg : constant String :=
8094                       "<there are no "
8095                       & Lang_Name & " sources in this project";
8096
8097             begin
8098                Error_Msg_Warn := Data.Flags.When_No_Sources = Warning;
8099
8100                if Continuation then
8101                   Error_Msg (Data.Flags, "\" & Msg, Location, Project);
8102                else
8103                   Error_Msg (Data.Flags, Msg, Location, Project);
8104                end if;
8105             end;
8106       end case;
8107    end Report_No_Sources;
8108
8109    ----------------------
8110    -- Show_Source_Dirs --
8111    ----------------------
8112
8113    procedure Show_Source_Dirs
8114      (Project : Project_Id;
8115       Shared  : Shared_Project_Tree_Data_Access)
8116    is
8117       Current : String_List_Id;
8118       Element : String_Element;
8119
8120    begin
8121       if Project.Source_Dirs = Nil_String then
8122          Debug_Output ("no Source_Dirs");
8123       else
8124          Debug_Increase_Indent ("Source_Dirs:");
8125
8126          Current := Project.Source_Dirs;
8127          while Current /= Nil_String loop
8128             Element := Shared.String_Elements.Table (Current);
8129             Debug_Output (Get_Name_String (Element.Display_Value));
8130             Current := Element.Next;
8131          end loop;
8132
8133          Debug_Decrease_Indent ("end Source_Dirs.");
8134       end if;
8135    end Show_Source_Dirs;
8136
8137    ---------------------------
8138    -- Process_Naming_Scheme --
8139    ---------------------------
8140
8141    procedure Process_Naming_Scheme
8142      (Tree         : Project_Tree_Ref;
8143       Root_Project : Project_Id;
8144       Node_Tree    : Prj.Tree.Project_Node_Tree_Ref;
8145       Flags        : Processing_Flags)
8146    is
8147
8148       procedure Check
8149         (Project          : Project_Id;
8150          In_Aggregate_Lib : Boolean;
8151          Data             : in out Tree_Processing_Data);
8152       --  Process the naming scheme for a single project
8153
8154       procedure Recursive_Check
8155         (Project  : Project_Id;
8156          Prj_Tree : Project_Tree_Ref;
8157          Context  : Project_Context;
8158          Data     : in out Tree_Processing_Data);
8159       --  Check_Naming_Scheme for the project
8160
8161       -----------
8162       -- Check --
8163       -----------
8164
8165       procedure Check
8166         (Project          : Project_Id;
8167          In_Aggregate_Lib : Boolean;
8168          Data             : in out Tree_Processing_Data)
8169       is
8170          procedure Check_Aggregate
8171            (Project : Project_Id;
8172             Data    : in out Tree_Processing_Data);
8173          --  Check the aggregate project attributes, reject any not supported
8174          --  attributes.
8175
8176          ---------------------
8177          -- Check_Aggregate --
8178          ---------------------
8179
8180          procedure Check_Aggregate
8181            (Project : Project_Id;
8182             Data    : in out Tree_Processing_Data)
8183          is
8184
8185             procedure Check_Not_Defined (Name : Name_Id);
8186             --  Report an error if Var is defined
8187
8188             -----------------------
8189             -- Check_Not_Defined --
8190             -----------------------
8191
8192             procedure Check_Not_Defined (Name : Name_Id) is
8193                Var : constant Prj.Variable_Value :=
8194                        Prj.Util.Value_Of
8195                          (Name,
8196                           Project.Decl.Attributes,
8197                           Data.Tree.Shared);
8198             begin
8199                if not Var.Default then
8200                   Error_Msg_Name_1 := Name;
8201                   Error_Msg
8202                     (Data.Flags, "wrong attribute %% in aggregate library",
8203                      Var.Location, Project);
8204                end if;
8205             end Check_Not_Defined;
8206
8207          begin
8208             Check_Not_Defined (Snames.Name_Library_Dir);
8209             Check_Not_Defined (Snames.Name_Library_Interface);
8210             Check_Not_Defined (Snames.Name_Library_Name);
8211             Check_Not_Defined (Snames.Name_Library_Ali_Dir);
8212             Check_Not_Defined (Snames.Name_Library_Src_Dir);
8213             Check_Not_Defined (Snames.Name_Library_Options);
8214             Check_Not_Defined (Snames.Name_Library_Standalone);
8215             Check_Not_Defined (Snames.Name_Library_Kind);
8216             Check_Not_Defined (Snames.Name_Leading_Library_Options);
8217             Check_Not_Defined (Snames.Name_Library_Version);
8218          end Check_Aggregate;
8219
8220          Shared   : constant Shared_Project_Tree_Data_Access :=
8221                       Data.Tree.Shared;
8222          Prj_Data : Project_Processing_Data;
8223
8224       --  Start of processing for Check
8225
8226       begin
8227          Debug_Increase_Indent ("check", Project.Name);
8228
8229          Initialize (Prj_Data, Project);
8230
8231          Check_If_Externally_Built (Project, Data);
8232
8233          case Project.Qualifier is
8234             when Aggregate =>
8235                null;
8236
8237             when Aggregate_Library =>
8238                if Project.Object_Directory = No_Path_Information then
8239                   Project.Object_Directory := Project.Directory;
8240                end if;
8241
8242             when others =>
8243                Get_Directories (Project, Data);
8244                Check_Programming_Languages (Project, Data);
8245
8246                if Current_Verbosity = High then
8247                   Show_Source_Dirs (Project, Shared);
8248                end if;
8249
8250                if Project.Qualifier = Dry then
8251                   Check_Abstract_Project (Project, Data);
8252                end if;
8253          end case;
8254
8255          --  Check configuration. This must be done even for gnatmake (even
8256          --  though no user configuration file was provided) since the default
8257          --  config we generate indicates whether libraries are supported for
8258          --  instance.
8259
8260          Check_Configuration (Project, Data);
8261
8262          --  For aggregate project check no library attributes are defined
8263
8264          if Project.Qualifier = Aggregate then
8265             Check_Aggregate (Project, Data);
8266
8267          else
8268             Check_Library_Attributes (Project, Data);
8269             Check_Package_Naming (Project, Data);
8270
8271             --  An aggregate library has no source, no need to look for them
8272
8273             if Project.Qualifier /= Aggregate_Library then
8274                Look_For_Sources (Prj_Data, Data);
8275             end if;
8276
8277             Check_Interfaces (Project, Data);
8278
8279             --  If this library is part of an aggregated library don't check it
8280             --  as it has no sources by itself and so interface won't be found.
8281
8282             if Project.Library and not In_Aggregate_Lib then
8283                Check_Stand_Alone_Library (Project, Data);
8284             end if;
8285
8286             Get_Mains (Project, Data);
8287          end if;
8288
8289          Free (Prj_Data);
8290
8291          Debug_Decrease_Indent ("done check");
8292       end Check;
8293
8294       ---------------------
8295       -- Recursive_Check --
8296       ---------------------
8297
8298       procedure Recursive_Check
8299         (Project  : Project_Id;
8300          Prj_Tree : Project_Tree_Ref;
8301          Context  : Project_Context;
8302          Data     : in out Tree_Processing_Data)
8303       is
8304       begin
8305          if Current_Verbosity = High then
8306             Debug_Increase_Indent
8307               ("Processing_Naming_Scheme for project", Project.Name);
8308          end if;
8309
8310          Data.Tree := Prj_Tree;
8311          Data.In_Aggregate_Lib := Context.In_Aggregate_Lib;
8312
8313          Check (Project, Context.In_Aggregate_Lib, Data);
8314
8315          if Current_Verbosity = High then
8316             Debug_Decrease_Indent ("done Processing_Naming_Scheme");
8317          end if;
8318       end Recursive_Check;
8319
8320       procedure Check_All_Projects is new For_Every_Project_Imported_Context
8321         (Tree_Processing_Data, Recursive_Check);
8322
8323       Data : Tree_Processing_Data;
8324
8325    --  Start of processing for Process_Naming_Scheme
8326
8327    begin
8328       Lib_Data_Table.Init;
8329       Initialize (Data, Tree => Tree, Node_Tree => Node_Tree, Flags => Flags);
8330       Check_All_Projects (Root_Project, Tree, Data, Imported_First => True);
8331       Free (Data);
8332
8333       --  Adjust language configs for projects that are extended
8334
8335       declare
8336          List : Project_List;
8337          Proj : Project_Id;
8338          Exte : Project_Id;
8339          Lang : Language_Ptr;
8340          Elng : Language_Ptr;
8341
8342       begin
8343          List := Tree.Projects;
8344          while List /= null loop
8345             Proj := List.Project;
8346             Exte := Proj;
8347             while Exte.Extended_By /= No_Project loop
8348                Exte := Exte.Extended_By;
8349             end loop;
8350
8351             if Exte /= Proj then
8352                Lang := Proj.Languages;
8353
8354                if Lang /= No_Language_Index then
8355                   loop
8356                      Elng := Get_Language_From_Name
8357                        (Exte, Get_Name_String (Lang.Name));
8358                      exit when Elng /= No_Language_Index;
8359                      Exte := Exte.Extends;
8360                   end loop;
8361
8362                   if Elng /= Lang then
8363                      Lang.Config := Elng.Config;
8364                   end if;
8365                end if;
8366             end if;
8367
8368             List := List.Next;
8369          end loop;
8370       end;
8371    end Process_Naming_Scheme;
8372
8373 end Prj.Nmsc;