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