gcc/ada/prj.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                                  P R J                                   --
   6 --                                                                          --
   7 --                                 S p e c                                  --
   8 --                                                                          --
   9 --          Copyright (C) 2001-2007, 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 --  The following package declares the data types for GNAT project.
  27 --  These data types may be used by GNAT Project-aware tools.
  28
  29 --  Children of these package implements various services on these data types.
  30 --  See in particular Prj.Pars and Prj.Env.
  31
  32 with Casing; use Casing;
  33 with Namet;  use Namet;
  34 with Scans;  use Scans;
  35 with Table;
  36 with Types;  use Types;
  37
  38 with GNAT.Dynamic_HTables; use GNAT.Dynamic_HTables;
  39 with GNAT.Dynamic_Tables;
  40 with GNAT.OS_Lib;          use GNAT.OS_Lib;
  41
  42 with System.HTable;
  43
  44 package Prj is
  45
  46    type Library_Support is (None, Static_Only, Full);
  47    --  Support for Library Project File.
  48    --  - None: Library Project Files are not supported at all
  49    --  - Static_Only: Library Project Files are only supported for static
  50    --    libraries.
  51    --  - Full: Library Project Files are supported for static and dynamic
  52    --    (shared) libraries.
  53
  54    type Yes_No_Unknown is (Yes, No, Unknown);
  55    --  Tri-state to decide if -lgnarl is needed when linking
  56
  57    type Mode is (Multi_Language, Ada_Only);
  58
  59    function Get_Mode return Mode;
  60    pragma Inline (Get_Mode);
  61
  62    procedure Set_Mode (New_Mode : Mode);
  63    pragma Inline (Set_Mode);
  64
  65    function In_Configuration return Boolean;
  66    pragma Inline (In_Configuration);
  67
  68    procedure Set_In_Configuration (Value : Boolean);
  69    pragma Inline (Set_In_Configuration);
  70
  71    All_Packages : constant String_List_Access;
  72    --  Default value of parameter Packages of procedures Parse, in Prj.Pars and
  73    --  Prj.Part, indicating that all packages should be checked.
  74
  75    type Project_Tree_Data;
  76    type Project_Tree_Ref is access all Project_Tree_Data;
  77    --  Reference to a project tree.
  78    --  Several project trees may exist in memory at the same time.
  79
  80    No_Project_Tree : constant Project_Tree_Ref;
  81
  82    function Default_Ada_Spec_Suffix return File_Name_Type;
  83    pragma Inline (Default_Ada_Spec_Suffix);
  84    --  The name for the standard GNAT suffix for Ada spec source file name
  85    --  ".ads". Initialized by Prj.Initialize.
  86
  87    function Default_Ada_Body_Suffix return File_Name_Type;
  88    pragma Inline (Default_Ada_Body_Suffix);
  89    --  The name for the standard GNAT suffix for Ada body source file name
  90    --  ".adb". Initialized by Prj.Initialize.
  91
  92    function Slash return Path_Name_Type;
  93    pragma Inline (Slash);
  94    --  "/", used as the path of locally removed files
  95
  96    Config_Project_File_Extension : String := ".cgpr";
  97    Project_File_Extension : String := ".gpr";
  98    --  The standard config and user project file name extensions. They are not
  99    --  constants, because Canonical_Case_File_Name is called on these variables
 100    --  in the body of Prj.
 101
 102    type Error_Warning is (Silent, Warning, Error);
 103    --  Severity of some situations, such as: no Ada sources in a project where
 104    --  Ada is one of the language.
 105    --
 106    --  When the situation occurs, the behaviour depends on the setting:
 107    --
 108    --    - Silent:  no action
 109    --    - Warning: issue a warning, does not cause the tool to fail
 110    --    - Error:   issue an error, causes the tool to fail
 111
 112    function Empty_File   return File_Name_Type;
 113    function Empty_String return Name_Id;
 114    --  Return the id for an empty string ""
 115
 116    type Project_Id is new Nat;
 117    No_Project : constant Project_Id := 0;
 118    --  Id of a Project File
 119
 120    type String_List_Id is new Nat;
 121    Nil_String : constant String_List_Id := 0;
 122    type String_Element is record
 123       Value         : Name_Id        := No_Name;
 124       Index         : Int            := 0;
 125       Display_Value : Name_Id        := No_Name;
 126       Location      : Source_Ptr     := No_Location;
 127       Flag          : Boolean        := False;
 128       Next          : String_List_Id := Nil_String;
 129    end record;
 130    --  To hold values for string list variables and array elements.
 131    --  Component Flag may be used for various purposes. For source
 132    --  directories, it indicates if the directory contains Ada source(s).
 133
 134    package String_Element_Table is new GNAT.Dynamic_Tables
 135      (Table_Component_Type => String_Element,
 136       Table_Index_Type     => String_List_Id,
 137       Table_Low_Bound      => 1,
 138       Table_Initial        => 200,
 139       Table_Increment      => 100);
 140    --  The table for string elements in string lists
 141
 142    type Variable_Kind is (Undefined, List, Single);
 143    --  Different kinds of variables
 144
 145    subtype Defined_Variable_Kind is Variable_Kind range List .. Single;
 146    --  The defined kinds of variables
 147
 148    Ignored : constant Variable_Kind;
 149    --  Used to indicate that a package declaration must be ignored
 150    --  while processing the project tree (unknown package name).
 151
 152    type Variable_Value (Kind : Variable_Kind := Undefined) is record
 153       Project  : Project_Id := No_Project;
 154       Location : Source_Ptr := No_Location;
 155       Default  : Boolean    := False;
 156       case Kind is
 157          when Undefined =>
 158             null;
 159          when List =>
 160             Values : String_List_Id := Nil_String;
 161          when Single =>
 162             Value : Name_Id := No_Name;
 163             Index : Int     := 0;
 164       end case;
 165    end record;
 166    --  Values for variables and array elements. Default is True if the
 167    --  current value is the default one for the variable
 168
 169    Nil_Variable_Value : constant Variable_Value;
 170    --  Value of a non existing variable or array element
 171
 172    type Variable_Id is new Nat;
 173    No_Variable : constant Variable_Id := 0;
 174    type Variable is record
 175       Next  : Variable_Id := No_Variable;
 176       Name  : Name_Id;
 177       Value : Variable_Value;
 178    end record;
 179    --  To hold the list of variables in a project file and in packages
 180
 181    package Variable_Element_Table is new GNAT.Dynamic_Tables
 182      (Table_Component_Type => Variable,
 183       Table_Index_Type     => Variable_Id,
 184       Table_Low_Bound      => 1,
 185       Table_Initial        => 200,
 186       Table_Increment      => 100);
 187    --  The table of variable in list of variables
 188
 189    type Array_Element_Id is new Nat;
 190    No_Array_Element : constant Array_Element_Id := 0;
 191    type Array_Element is record
 192       Index                : Name_Id;
 193       Src_Index            : Int := 0;
 194       Index_Case_Sensitive : Boolean := True;
 195       Value                : Variable_Value;
 196       Next                 : Array_Element_Id := No_Array_Element;
 197    end record;
 198    --  Each Array_Element represents an array element and is linked (Next)
 199    --  to the next array element, if any, in the array.
 200
 201    package Array_Element_Table is new GNAT.Dynamic_Tables
 202      (Table_Component_Type => Array_Element,
 203       Table_Index_Type     => Array_Element_Id,
 204       Table_Low_Bound      => 1,
 205       Table_Initial        => 200,
 206       Table_Increment      => 100);
 207    --  The table that contains all array elements
 208
 209    type Array_Id is new Nat;
 210    No_Array : constant Array_Id := 0;
 211    type Array_Data is record
 212       Name  : Name_Id          := No_Name;
 213       Value : Array_Element_Id := No_Array_Element;
 214       Next  : Array_Id         := No_Array;
 215    end record;
 216    --  Each Array_Data value represents an array.
 217    --  Value is the id of the first element.
 218    --  Next is the id of the next array in the project file or package.
 219
 220    package Array_Table is new GNAT.Dynamic_Tables
 221      (Table_Component_Type => Array_Data,
 222       Table_Index_Type     => Array_Id,
 223       Table_Low_Bound      => 1,
 224       Table_Initial        => 200,
 225       Table_Increment      => 100);
 226    --  The table that contains all arrays
 227
 228    type Package_Id is new Nat;
 229    No_Package : constant Package_Id := 0;
 230    type Declarations is record
 231       Variables  : Variable_Id := No_Variable;
 232       Attributes : Variable_Id := No_Variable;
 233       Arrays     : Array_Id    := No_Array;
 234       Packages   : Package_Id  := No_Package;
 235    end record;
 236    --  Contains the declarations (variables, single and array attributes,
 237    --  packages) for a project or a package in a project.
 238
 239    No_Declarations : constant Declarations :=
 240      (Variables  => No_Variable,
 241       Attributes => No_Variable,
 242       Arrays     => No_Array,
 243       Packages   => No_Package);
 244    --  Default value of Declarations: indicates that there is no declarations
 245
 246    type Package_Element is record
 247       Name   : Name_Id      := No_Name;
 248       Decl   : Declarations := No_Declarations;
 249       Parent : Package_Id   := No_Package;
 250       Next   : Package_Id   := No_Package;
 251    end record;
 252    --  A package (includes declarations that may include other packages)
 253
 254    package Package_Table is new GNAT.Dynamic_Tables
 255      (Table_Component_Type => Package_Element,
 256       Table_Index_Type     => Package_Id,
 257       Table_Low_Bound      => 1,
 258       Table_Initial        => 100,
 259       Table_Increment      => 100);
 260    --  The table that contains all packages
 261
 262    type Language_Index is new Nat;
 263
 264    No_Language_Index : constant Language_Index := 0;
 265
 266    procedure Display_Language_Name
 267      (In_Tree  : Project_Tree_Ref;
 268       Language : Language_Index);
 269
 270    type Header_Num is range 0 .. 2047;
 271
 272    function Hash is new System.HTable.Hash (Header_Num => Header_Num);
 273
 274    function Hash (Name : Name_Id)        return Header_Num;
 275    function Hash (Name : File_Name_Type) return Header_Num;
 276    function Hash (Name : Path_Name_Type) return Header_Num;
 277
 278    type Language_Kind is (File_Based, Unit_Based);
 279
 280    type Dependency_File_Kind is (None, Makefile, ALI_File);
 281
 282    Makefile_Dependency_Suffix : constant String := ".d";
 283    ALI_Dependency_Suffix      : constant String := ".ali";
 284
 285    Switches_Dependency_Suffix : constant String := ".cswi";
 286
 287    Binder_Exchange_Suffix     : constant String := ".bexch";
 288    --  Suffix for binder exchange files
 289
 290    Library_Exchange_Suffix     : constant String := ".lexch";
 291    --  Suffix for library exchange files
 292
 293    type Name_List_Index is new Nat;
 294    No_Name_List            : constant Name_List_Index := 0;
 295
 296    type Name_Node is record
 297       Name : Name_Id         := No_Name;
 298       Next : Name_List_Index := No_Name_List;
 299    end record;
 300
 301    package Name_List_Table is new GNAT.Dynamic_Tables
 302      (Table_Component_Type => Name_Node,
 303       Table_Index_Type     => Name_List_Index,
 304       Table_Low_Bound      => 1,
 305       Table_Initial        => 10,
 306       Table_Increment      => 100);
 307    --  The table for lists of names used in package Language_Processing
 308
 309    package Mapping_Files_Htable is new Simple_HTable
 310      (Header_Num => Header_Num,
 311       Element    => Path_Name_Type,
 312       No_Element => No_Path,
 313       Key        => Path_Name_Type,
 314       Hash       => Hash,
 315       Equal      => "=");
 316    --  A hash table to store the mapping files that are not used
 317
 318    type Lang_Naming_Data is record
 319       Dot_Replacement : File_Name_Type := No_File;
 320       --  The string to replace '.' in the source file name (for Ada)
 321
 322       Casing : Casing_Type := All_Lower_Case;
 323       --  The casing of the source file name (for Ada)
 324
 325       Separate_Suffix : File_Name_Type := No_File;
 326       --  String to append to unit name for source file name of an Ada subunit
 327
 328       Spec_Suffix : File_Name_Type := No_File;
 329       --  The string to append to the unit name for the
 330       --  source file name of a spec.
 331
 332       Body_Suffix : File_Name_Type := No_File;
 333       --  The string to append to the unit name for the
 334       --  source file name of a body.
 335    end record;
 336
 337    No_Lang_Naming_Data : constant Lang_Naming_Data :=
 338                            (Dot_Replacement => No_File,
 339                             Casing          => All_Lower_Case,
 340                             Separate_Suffix => No_File,
 341                             Spec_Suffix     => No_File,
 342                             Body_Suffix     => No_File);
 343
 344    type Source_Id is new Nat;
 345
 346    No_Source : constant Source_Id := 0;
 347
 348    --  All the fields in the below record should be commented ???
 349
 350    type Language_Config is record
 351       Kind : Language_Kind := File_Based;
 352       --  Kind of language. All languages are file based, except Ada which is
 353       --  unit based.
 354
 355       Naming_Data : Lang_Naming_Data;
 356       --  The naming data for the languages (prefixs, etc)
 357
 358       Compiler_Driver : File_Name_Type := No_File;
 359       --  The name of the executable for the compiler of the language
 360
 361       Compiler_Driver_Path : String_Access := null;
 362       --  The path name of the executable for the compiler of the language
 363
 364       Compiler_Required_Switches : Name_List_Index := No_Name_List;
 365       --  The list of switches that are required as a minimum to invoke the
 366       --  compiler driver.
 367
 368       Compilation_PIC_Option : Name_List_Index := No_Name_List;
 369       --  The option(s) to compile a source in Position Independent Code for
 370       --  shared libraries. Specified in the configuration. When not specified,
 371       --  there is no need for such switch.
 372
 373       Mapping_File_Switches  : Name_List_Index := No_Name_List;
 374       --  The option(s) to provide a mapping file to the compiler. Specified in
 375       --  the configuration. When not ???
 376
 377       Mapping_Spec_Suffix  : File_Name_Type       := No_File;
 378       Mapping_Body_Suffix  : File_Name_Type       := No_File;
 379       Config_File_Switches : Name_List_Index      := No_Name_List;
 380       Dependency_Kind      : Dependency_File_Kind := None;
 381       Dependency_Option    : Name_List_Index      := No_Name_List;
 382       Compute_Dependency   : Name_List_Index      := No_Name_List;
 383       Include_Option       : Name_List_Index      := No_Name_List;
 384
 385       Include_Path : Name_Id := No_Name;
 386       --  Name of an environment variable
 387
 388       Include_Path_File : Name_Id := No_Name;
 389       --  Name of an environment variable
 390
 391       Objects_Path : Name_Id := No_Name;
 392       --  Name of an environment variable
 393
 394       Objects_Path_File : Name_Id := No_Name;
 395       --  Name of an environment variable
 396
 397       Config_Body           : Name_Id         := No_Name;
 398       Config_Spec           : Name_Id         := No_Name;
 399       Config_Body_Pattern   : Name_Id         := No_Name;
 400       Config_Spec_Pattern   : Name_Id         := No_Name;
 401       Config_File_Unique    : Boolean         := False;
 402       Runtime_Project       : Path_Name_Type  := No_Path;
 403       Binder_Driver         : File_Name_Type  := No_File;
 404       Binder_Driver_Path    : Path_Name_Type  := No_Path;
 405       Binder_Required_Switches : Name_List_Index      := No_Name_List;
 406       Binder_Prefix         : Name_Id         := No_Name;
 407       Toolchain_Version     : Name_Id         := No_Name;
 408       Toolchain_Description : Name_Id         := No_Name;
 409       PIC_Option            : Name_Id         := No_Name;
 410       Objects_Generated     : Boolean         := True;
 411    end record;
 412
 413    No_Language_Config : constant Language_Config :=
 414                           (Kind                       => File_Based,
 415                            Naming_Data                => No_Lang_Naming_Data,
 416                            Compiler_Driver            => No_File,
 417                            Compiler_Driver_Path       => null,
 418                            Compiler_Required_Switches => No_Name_List,
 419                            Compilation_PIC_Option     => No_Name_List,
 420                            Mapping_File_Switches      => No_Name_List,
 421                            Mapping_Spec_Suffix        => No_File,
 422                            Mapping_Body_Suffix        => No_File,
 423                            Config_File_Switches       => No_Name_List,
 424                            Dependency_Kind            => Makefile,
 425                            Dependency_Option          => No_Name_List,
 426                            Compute_Dependency         => No_Name_List,
 427                            Include_Option             => No_Name_List,
 428                            Include_Path               => No_Name,
 429                            Include_Path_File          => No_Name,
 430                            Objects_Path               => No_Name,
 431                            Objects_Path_File          => No_Name,
 432                            Config_Body                => No_Name,
 433                            Config_Spec                => No_Name,
 434                            Config_Body_Pattern        => No_Name,
 435                            Config_Spec_Pattern        => No_Name,
 436                            Config_File_Unique         => False,
 437                            Runtime_Project            => No_Path,
 438                            Binder_Driver              => No_File,
 439                            Binder_Driver_Path         => No_Path,
 440                            Binder_Required_Switches   => No_Name_List,
 441                            Binder_Prefix              => No_Name,
 442                            Toolchain_Version          => No_Name,
 443                            Toolchain_Description      => No_Name,
 444                            PIC_Option                 => No_Name,
 445                            Objects_Generated          => True);
 446
 447    type Language_Data is record
 448       Name          : Name_Id         := No_Name;
 449       Display_Name  : Name_Id         := No_Name;
 450       Config        : Language_Config := No_Language_Config;
 451       First_Source  : Source_Id       := No_Source;
 452       Mapping_Files : Mapping_Files_Htable.Instance :=
 453                         Mapping_Files_Htable.Nil;
 454       Next          : Language_Index  := No_Language_Index;
 455    end record;
 456
 457    No_Language_Data : constant Language_Data :=
 458                         (Name          => No_Name,
 459                          Display_Name  => No_Name,
 460                          Config        => No_Language_Config,
 461                          First_Source  => No_Source,
 462                          Mapping_Files => Mapping_Files_Htable.Nil,
 463                          Next          => No_Language_Index);
 464
 465    package Language_Data_Table is new GNAT.Dynamic_Tables
 466      (Table_Component_Type => Language_Data,
 467       Table_Index_Type     => Language_Index,
 468       Table_Low_Bound      => 1,
 469       Table_Initial        => 10,
 470       Table_Increment      => 100);
 471    --  The table for lists of names used in package Language_Processing
 472
 473    type Alternate_Language_Id is new Nat;
 474
 475    No_Alternate_Language : constant Alternate_Language_Id := 0;
 476
 477    type Alternate_Language_Data is record
 478       Language : Language_Index := No_Language_Index;
 479       Next     : Alternate_Language_Id := No_Alternate_Language;
 480    end record;
 481
 482    package Alternate_Language_Table is new GNAT.Dynamic_Tables
 483      (Table_Component_Type => Alternate_Language_Data,
 484       Table_Index_Type     => Alternate_Language_Id,
 485       Table_Low_Bound      => 1,
 486       Table_Initial        => 10,
 487       Table_Increment      => 100);
 488    --  The table for storing the alternate languages of a header file that
 489    --  is used for several languages.
 490
 491    type Source_Kind is (Spec, Impl, Sep);
 492
 493    --  Following record needs full comments on every field ???
 494
 495    type Source_Data is record
 496       Project             : Project_Id            := No_Project;
 497       Language_Name       : Name_Id               := No_Name;
 498       Language            : Language_Index        := No_Language_Index;
 499       Alternate_Languages : Alternate_Language_Id := No_Alternate_Language;
 500       Kind                : Source_Kind           := Spec;
 501       Dependency          : Dependency_File_Kind  := Makefile;
 502       Other_Part          : Source_Id             := No_Source;
 503       Unit                : Name_Id               := No_Name;
 504       Index               : Int                   := 0;
 505       Locally_Removed     : Boolean               := False;
 506       Replaced_By         : Source_Id             := No_Source;
 507       File                : File_Name_Type        := No_File;
 508       Display_File        : File_Name_Type        := No_File;
 509       Path                : Path_Name_Type        := No_Path;
 510       Display_Path        : Path_Name_Type        := No_Path;
 511       Source_TS           : Time_Stamp_Type       := Empty_Time_Stamp;
 512       Object_Project      : Project_Id            := No_Project;
 513       Object_Exists       : Boolean               := True;
 514       Object              : File_Name_Type        := No_File;
 515       Current_Object_Path : Path_Name_Type        := No_Path;
 516       Object_Path         : Path_Name_Type        := No_Path;
 517
 518       Object_TS : Time_Stamp_Type := Empty_Time_Stamp;
 519       --  Object file time stamp
 520
 521       Dep_Name : File_Name_Type := No_File;
 522       --  Dependency file simple name
 523
 524       Current_Dep_Path : Path_Name_Type := No_Path;
 525
 526       Dep_Path : Path_Name_Type := No_Path;
 527       --  Dependency full path name
 528
 529       Dep_TS : Time_Stamp_Type := Empty_Time_Stamp;
 530       --  Dependency file time stamp
 531
 532       Switches         : File_Name_Type  := No_File;
 533       Switches_Path    : Path_Name_Type  := No_Path;
 534       Switches_TS      : Time_Stamp_Type := Empty_Time_Stamp;
 535       Naming_Exception : Boolean         := False;
 536       Next_In_Sources  : Source_Id       := No_Source;
 537       Next_In_Project  : Source_Id       := No_Source;
 538       Next_In_Lang     : Source_Id       := No_Source;
 539    end record;
 540
 541    No_Source_Data : constant Source_Data :=
 542                       (Project             => No_Project,
 543                        Language_Name       => No_Name,
 544                        Language            => No_Language_Index,
 545                        Alternate_Languages => No_Alternate_Language,
 546                        Kind                => Spec,
 547                        Dependency          => Makefile,
 548                        Other_Part          => No_Source,
 549                        Unit                => No_Name,
 550                        Index               => 0,
 551                        Locally_Removed     => False,
 552                        Replaced_By         => No_Source,
 553                        File                => No_File,
 554                        Display_File        => No_File,
 555                        Path                => No_Path,
 556                        Display_Path        => No_Path,
 557                        Source_TS           => Empty_Time_Stamp,
 558                        Object_Project      => No_Project,
 559                        Object_Exists       => True,
 560                        Object              => No_File,
 561                        Current_Object_Path => No_Path,
 562                        Object_Path         => No_Path,
 563                        Object_TS           => Empty_Time_Stamp,
 564                        Dep_Name            => No_File,
 565                        Current_Dep_Path    => No_Path,
 566                        Dep_Path            => No_Path,
 567                        Dep_TS              => Empty_Time_Stamp,
 568                        Switches            => No_File,
 569                        Switches_Path       => No_Path,
 570                        Switches_TS         => Empty_Time_Stamp,
 571                        Naming_Exception    => False,
 572                        Next_In_Sources     => No_Source,
 573                        Next_In_Project     => No_Source,
 574                        Next_In_Lang        => No_Source);
 575
 576    package Source_Data_Table is new GNAT.Dynamic_Tables
 577      (Table_Component_Type => Source_Data,
 578       Table_Index_Type     => Source_Id,
 579       Table_Low_Bound      => 1,
 580       Table_Initial        => 1000,
 581       Table_Increment      => 100);
 582    --  The table for the sources
 583
 584    package Source_Paths_Htable is new Simple_HTable
 585      (Header_Num => Header_Num,
 586       Element    => Source_Id,
 587       No_Element => No_Source,
 588       Key        => Path_Name_Type,
 589       Hash       => Hash,
 590       Equal      => "=");
 591    --  Mapping of source paths to source ids
 592
 593    type Verbosity is (Default, Medium, High);
 594    --  Verbosity when parsing GNAT Project Files
 595    --    Default is default (very quiet, if no errors).
 596    --    Medium is more verbose.
 597    --    High is extremely verbose.
 598
 599    Current_Verbosity : Verbosity := Default;
 600    --  The current value of the verbosity the project files are parsed with
 601
 602    type Lib_Kind is (Static, Dynamic, Relocatable);
 603
 604    type Policy is (Autonomous, Compliant, Controlled, Restricted, Direct);
 605    --  Type to specify the symbol policy, when symbol control is supported.
 606    --  See full explanation about this type in package Symbols.
 607    --    Autonomous: Create a symbol file without considering any reference
 608    --    Compliant:  Try to be as compatible as possible with an existing ref
 609    --    Controlled: Fail if symbols are not the same as those in the reference
 610    --    Restricted: Restrict the symbols to those in the symbol file
 611    --    Direct:     The symbol file is used as is
 612
 613    type Symbol_Record is record
 614       Symbol_File   : Path_Name_Type := No_Path;
 615       Reference     : Path_Name_Type := No_Path;
 616       Symbol_Policy : Policy  := Autonomous;
 617    end record;
 618    --  Type to keep the symbol data to be used when building a shared library
 619
 620    No_Symbols : constant Symbol_Record :=
 621      (Symbol_File   => No_Path,
 622       Reference     => No_Path,
 623       Symbol_Policy => Autonomous);
 624    --  The default value of the symbol data
 625
 626    function Image (Casing : Casing_Type) return String;
 627    --  Similar to 'Image (but avoid use of this attribute in compiler)
 628
 629    function Value (Image : String) return Casing_Type;
 630    --  Similar to 'Value (but avoid use of this attribute in compiler)
 631    --  Raises Constraint_Error if not a Casing_Type image.
 632
 633    --  Declarations for gprmake:
 634
 635    First_Language_Index        : constant Language_Index := 1;
 636    First_Language_Indexes_Last : constant Language_Index := 5;
 637
 638    Ada_Language_Index         : constant Language_Index :=
 639                                   First_Language_Index;
 640    C_Language_Index           : constant Language_Index :=
 641                                   Ada_Language_Index + 1;
 642    C_Plus_Plus_Language_Index : constant Language_Index :=
 643                                   C_Language_Index + 1;
 644
 645    Last_Language_Index : Language_Index := No_Language_Index;
 646
 647    subtype First_Language_Indexes is Language_Index
 648       range First_Language_Index .. First_Language_Indexes_Last;
 649
 650    package Language_Indexes is new System.HTable.Simple_HTable
 651      (Header_Num => Header_Num,
 652       Element    => Language_Index,
 653       No_Element => No_Language_Index,
 654       Key        => Name_Id,
 655       Hash       => Hash,
 656       Equal      => "=");
 657    --  Mapping of language names to language indexes
 658
 659    package Language_Names is new Table.Table
 660      (Table_Component_Type => Name_Id,
 661       Table_Index_Type     => Language_Index,
 662       Table_Low_Bound      => 1,
 663       Table_Initial        => 4,
 664       Table_Increment      => 100,
 665       Table_Name           => "Prj.Language_Names");
 666    --  The table for the name of programming languages
 667
 668    procedure Add_Language_Name (Name : Name_Id);
 669
 670    procedure Display_Language_Name (Language : Language_Index);
 671
 672    type Languages_In_Project is array (First_Language_Indexes) of Boolean;
 673    --  Set of supported languages used in a project
 674
 675    No_Languages : constant Languages_In_Project := (others => False);
 676    --  No supported languages are used
 677
 678    type Supp_Language_Index is new Nat;
 679    No_Supp_Language_Index  : constant Supp_Language_Index := 0;
 680
 681    type Supp_Language is record
 682       Index   : Language_Index := No_Language_Index;
 683       Present : Boolean := False;
 684       Next    : Supp_Language_Index := No_Supp_Language_Index;
 685    end record;
 686
 687    package Present_Language_Table is new GNAT.Dynamic_Tables
 688      (Table_Component_Type => Supp_Language,
 689       Table_Index_Type     => Supp_Language_Index,
 690       Table_Low_Bound      => 1,
 691       Table_Initial        => 4,
 692       Table_Increment      => 100);
 693    --  The table for the presence of languages with an index that is outside
 694    --  of First_Language_Indexes.
 695
 696    type Impl_Suffix_Array is array (First_Language_Indexes) of File_Name_Type;
 697    --  Suffixes for the non spec sources of the different supported languages
 698    --  in a project.
 699
 700    No_Impl_Suffixes : constant Impl_Suffix_Array := (others => No_File);
 701    --  A default value for the non spec source suffixes
 702
 703    type Supp_Suffix is record
 704       Index   : Language_Index      := No_Language_Index;
 705       Suffix  : File_Name_Type      := No_File;
 706       Next    : Supp_Language_Index := No_Supp_Language_Index;
 707    end record;
 708
 709    package Supp_Suffix_Table is new GNAT.Dynamic_Tables
 710      (Table_Component_Type => Supp_Suffix,
 711       Table_Index_Type     => Supp_Language_Index,
 712       Table_Low_Bound      => 1,
 713       Table_Initial        => 4,
 714       Table_Increment      => 100);
 715    --  The table for the presence of languages with an index that is outside
 716    --  of First_Language_Indexes.
 717
 718    type Lang_Kind is (GNU, Other);
 719
 720    type Language_Processing_Data is record
 721       Compiler_Drivers     : Name_List_Index := No_Name_List;
 722       Compiler_Paths       : Name_Id         := No_Name;
 723       Compiler_Kinds       : Lang_Kind       := GNU;
 724       Dependency_Options   : Name_List_Index := No_Name_List;
 725       Compute_Dependencies : Name_List_Index := No_Name_List;
 726       Include_Options      : Name_List_Index := No_Name_List;
 727       Binder_Drivers       : Name_Id         := No_Name;
 728       Binder_Driver_Paths  : Name_Id         := No_Name;
 729    end record;
 730
 731    Default_Language_Processing_Data :
 732      constant Language_Processing_Data :=
 733        (Compiler_Drivers     => No_Name_List,
 734         Compiler_Paths       => No_Name,
 735         Compiler_Kinds       => GNU,
 736         Dependency_Options   => No_Name_List,
 737         Compute_Dependencies => No_Name_List,
 738         Include_Options      => No_Name_List,
 739         Binder_Drivers       => No_Name,
 740         Binder_Driver_Paths  => No_Name);
 741
 742    type First_Language_Processing_Data is
 743      array (First_Language_Indexes) of Language_Processing_Data;
 744
 745    Default_First_Language_Processing_Data :
 746       constant First_Language_Processing_Data :=
 747                  (others => Default_Language_Processing_Data);
 748
 749    type Supp_Language_Data is record
 750       Index : Language_Index := No_Language_Index;
 751       Data  : Language_Processing_Data := Default_Language_Processing_Data;
 752       Next  : Supp_Language_Index := No_Supp_Language_Index;
 753    end record;
 754
 755    package Supp_Language_Table is new GNAT.Dynamic_Tables
 756      (Table_Component_Type => Supp_Language_Data,
 757       Table_Index_Type     => Supp_Language_Index,
 758       Table_Low_Bound      => 1,
 759       Table_Initial        => 4,
 760       Table_Increment      => 100);
 761    --  The table for language data when there are more languages than
 762    --  in First_Language_Indexes.
 763
 764    type Other_Source_Id is new Nat;
 765    No_Other_Source : constant Other_Source_Id := 0;
 766
 767    type Other_Source is record
 768       Language         : Language_Index;       --  language of the source
 769       File_Name        : File_Name_Type;       --  source file simple name
 770       Path_Name        : Path_Name_Type;       --  source full path name
 771       Source_TS        : Time_Stamp_Type;      --  source file time stamp
 772       Object_Name      : File_Name_Type;       --  object file simple name
 773       Object_Path      : Path_Name_Type;       --  object full path name
 774       Object_TS        : Time_Stamp_Type;      --  object file time stamp
 775       Dep_Name         : File_Name_Type;       --  dependency file simple name
 776       Dep_Path         : Path_Name_Type;       --  dependency full path name
 777       Dep_TS           : Time_Stamp_Type;      --  dependency file time stamp
 778       Naming_Exception : Boolean := False;     --  True if a naming exception
 779       Next             : Other_Source_Id := No_Other_Source;
 780    end record;
 781    --  Data for a source in a language other than Ada
 782
 783    package Other_Source_Table is new GNAT.Dynamic_Tables
 784      (Table_Component_Type => Other_Source,
 785       Table_Index_Type     => Other_Source_Id,
 786       Table_Low_Bound      => 1,
 787       Table_Initial        => 200,
 788       Table_Increment      => 100);
 789    --  The table for sources of languages other than Ada
 790
 791    --  The following record contains data for a naming scheme
 792
 793    type Naming_Data is record
 794
 795       Dot_Replacement : File_Name_Type := No_File;
 796       --  The string to replace '.' in the source file name (for Ada)
 797
 798       Dot_Repl_Loc : Source_Ptr := No_Location;
 799
 800       Casing : Casing_Type := All_Lower_Case;
 801       --  The casing of the source file name (for Ada)
 802
 803       Spec_Suffix : Array_Element_Id := No_Array_Element;
 804       --  The string to append to the unit name for the
 805       --  source file name of a spec.
 806       --  Indexed by the programming language.
 807
 808       Ada_Spec_Suffix_Loc : Source_Ptr := No_Location;
 809
 810       Body_Suffix : Array_Element_Id := No_Array_Element;
 811       --  The string to append to the unit name for the
 812       --  source file name of a body.
 813       --  Indexed by the programming language.
 814
 815       Ada_Body_Suffix_Loc : Source_Ptr := No_Location;
 816
 817       Separate_Suffix : File_Name_Type := No_File;
 818       --  String to append to unit name for source file name of an Ada subunit
 819
 820       Sep_Suffix_Loc : Source_Ptr := No_Location;
 821       --  Position in the project file source where Separate_Suffix is defined
 822
 823       Specs : Array_Element_Id := No_Array_Element;
 824       --  An associative array mapping individual specs to source file names
 825       --  This is specific to Ada.
 826
 827       Bodies : Array_Element_Id := No_Array_Element;
 828       --  An associative array mapping individual bodies to source file names
 829       --  This is specific to Ada.
 830
 831       Specification_Exceptions : Array_Element_Id := No_Array_Element;
 832       --  An associative array listing spec file names that do not have the
 833       --  spec suffix. Not used by Ada. Indexed by programming language name.
 834
 835       Implementation_Exceptions : Array_Element_Id := No_Array_Element;
 836       --  An associative array listing body file names that do not have the
 837       --  body suffix. Not used by Ada. Indexed by programming language name.
 838
 839       --  For gprmake:
 840
 841       Impl_Suffixes : Impl_Suffix_Array   := No_Impl_Suffixes;
 842       Supp_Suffixes : Supp_Language_Index := No_Supp_Language_Index;
 843    end record;
 844
 845    function Spec_Suffix_Of
 846      (In_Tree  : Project_Tree_Ref;
 847       Language : String;
 848       Naming   : Naming_Data) return String;
 849
 850    function Spec_Suffix_Id_Of
 851      (In_Tree  : Project_Tree_Ref;
 852       Language : String;
 853       Naming   : Naming_Data) return File_Name_Type;
 854
 855    procedure Set_Spec_Suffix
 856      (In_Tree  : Project_Tree_Ref;
 857       Language : String;
 858       Naming   : in out Naming_Data;
 859       Suffix   : File_Name_Type);
 860
 861    function Body_Suffix_Id_Of
 862      (In_Tree  : Project_Tree_Ref;
 863       Language : String;
 864       Naming   : Naming_Data) return File_Name_Type;
 865
 866    function Body_Suffix_Of
 867      (In_Tree  : Project_Tree_Ref;
 868       Language : String;
 869       Naming   : Naming_Data) return String;
 870
 871    procedure Set_Body_Suffix
 872      (In_Tree  : Project_Tree_Ref;
 873       Language : String;
 874       Naming   : in out Naming_Data;
 875       Suffix   : File_Name_Type);
 876
 877    function Objects_Exist_For
 878      (Language : String;
 879       In_Tree  : Project_Tree_Ref) return Boolean;
 880
 881    function Standard_Naming_Data
 882      (Tree : Project_Tree_Ref := No_Project_Tree) return Naming_Data;
 883    pragma Inline (Standard_Naming_Data);
 884    --  The standard GNAT naming scheme when Tree is No_Project_Tree.
 885    --  Otherwise, return the default naming scheme for the project tree Tree,
 886    --  which must have been Initialized.
 887
 888    function Same_Naming_Scheme
 889      (Left, Right : Naming_Data) return Boolean;
 890    --  Returns True if Left and Right are the same naming scheme
 891    --  not considering Specs and Bodies.
 892
 893    type Project_List is new Nat;
 894    Empty_Project_List : constant Project_List := 0;
 895    --  A list of project files
 896
 897    type Project_Element is record
 898       Project : Project_Id   := No_Project;
 899       Next    : Project_List := Empty_Project_List;
 900    end record;
 901    --  Element in a list of project files. Next is the id of the next
 902    --  project file in the list.
 903
 904    package Project_List_Table is new GNAT.Dynamic_Tables
 905      (Table_Component_Type => Project_Element,
 906       Table_Index_Type     => Project_List,
 907       Table_Low_Bound      => 1,
 908       Table_Initial        => 100,
 909       Table_Increment      => 100);
 910    --  The table that contains the lists of project files
 911
 912    type Project_Configuration is record
 913          Run_Path_Option          : Name_List_Index := No_Name_List;
 914          --  The option to use when linking to specify the path where to look
 915          --  for libraries.
 916
 917          Executable_Suffix        : Name_Id         := No_Name;
 918          --  The suffix of executables, when specified in the configuration or
 919          --  in package Builder of the main project. When this is not
 920          --  specified, the executable suffix is the default for the platform.
 921
 922          --  Linking
 923
 924          Linker                   : Path_Name_Type  := No_Path;
 925          --  Path name of the linker driver; specified in the configuration
 926          --  or in the package Builder of the main project.
 927
 928          Minimum_Linker_Options   : Name_List_Index := No_Name_List;
 929          --  The minimum options for the linker driver; specified in the
 930          --  configuration.
 931
 932          Linker_Executable_Option : Name_List_Index := No_Name_List;
 933          --  The option(s) to indicate the name of the executable in the
 934          --  linker command. Specified in the configuration. When not
 935          --  specified, default to -o <executable name>.
 936
 937          Linker_Lib_Dir_Option    : Name_Id         := No_Name;
 938          --  The option to specify where to find a library for linking.
 939          --  Specified in the configuration. When not specified, defaults to
 940          --  "-L".
 941
 942          Linker_Lib_Name_Option   : Name_Id         := No_Name;
 943          --  The option to specify the name of a library for linking.
 944          --  Specified in the configuration. When not specified, defaults to
 945          --  "-l".
 946
 947          --  Libraries
 948
 949          Library_Builder          : Path_Name_Type  := No_Path;
 950          --  The executable to build library. Specified in the configuration.
 951
 952          Lib_Support              : Library_Support := None;
 953          --  The level of library support. Specified in the configuration.
 954          --  Support is none, static libraries only or both static and shared
 955          --  libraries.
 956
 957          --  Archives
 958
 959          Archive_Builder          : Name_List_Index := No_Name_List;
 960          --  The name of the executable to build archives, with the minimum
 961          --  switches. Specified in the configuration.
 962
 963          Archive_Indexer          : Name_List_Index := No_Name_List;
 964          --  The name of the executable to index archives, with the minimum
 965          --  switches. Specified in the configuration.
 966
 967          Archive_Suffix           : File_Name_Type  := No_File;
 968          --  The suffix of archives. Specified in the configuration. When not
 969          --  specified, defaults to ".a".
 970
 971          Lib_Partial_Linker       : Name_List_Index := No_Name_List;
 972
 973          --  Shared libraries
 974
 975          Shared_Lib_Prefix        : File_Name_Type  := No_File;
 976          --  Part of a shared library file name that precedes the name of the
 977          --  library. Specified in the configuration. When not specified,
 978          --  defaults to "lib".
 979
 980          Shared_Lib_Suffix        : File_Name_Type  := No_File;
 981          --  Suffix of shared libraries, after the library name in the shared
 982          --  library name. Specified in the configuration. When not specified,
 983          --  default to ".so".
 984
 985          Shared_Lib_Min_Options   : Name_List_Index := No_Name_List;
 986          --
 987
 988          Lib_Version_Options      : Name_List_Index := No_Name_List;
 989          --
 990
 991          Symbolic_Link_Supported  : Boolean         := False;
 992          --
 993
 994          Lib_Maj_Min_Id_Supported : Boolean         := False;
 995          --
 996
 997          Auto_Init_Supported      : Boolean         := False;
 998          --
 999    end record;
1000
1001    Default_Project_Config : constant Project_Configuration :=
1002        (Run_Path_Option          => No_Name_List,
1003         Executable_Suffix        => No_Name,
1004         Linker                   => No_Path,
1005         Minimum_Linker_Options   => No_Name_List,
1006         Linker_Executable_Option => No_Name_List,
1007         Linker_Lib_Dir_Option    => No_Name,
1008         Linker_Lib_Name_Option   => No_Name,
1009         Library_Builder          => No_Path,
1010         Lib_Support              => None,
1011         Archive_Builder          => No_Name_List,
1012         Archive_Indexer          => No_Name_List,
1013         Archive_Suffix           => No_File,
1014         Lib_Partial_Linker       => No_Name_List,
1015         Shared_Lib_Prefix        => No_File,
1016         Shared_Lib_Suffix        => No_File,
1017         Shared_Lib_Min_Options   => No_Name_List,
1018         Lib_Version_Options      => No_Name_List,
1019         Symbolic_Link_Supported  => False,
1020         Lib_Maj_Min_Id_Supported => False,
1021         Auto_Init_Supported      => False);
1022
1023    --  The following record describes a project file representation
1024
1025    --  Note that it is not specified if the path names of directories (source,
1026    --  object, library or exec directories) end with or without a directory
1027    --  separator.
1028
1029    type Project_Data is record
1030       Externally_Built : Boolean := False;
1031       --  True if the project is externally built. In such case, the Project
1032       --  Manager will not modify anything in this project.
1033
1034       Languages        : Name_List_Index := No_Name_List;
1035       --  The list of languages of the sources of this project
1036
1037       Config           : Project_Configuration;
1038
1039       First_Referred_By : Project_Id := No_Project;
1040       --  The project, if any, that was the first to be known as importing or
1041       --  extending this project
1042
1043       Name : Name_Id := No_Name;
1044       --  The name of the project
1045
1046       Display_Name : Name_Id := No_Name;
1047       --  The name of the project with the spelling of its declaration
1048
1049       Path_Name : Path_Name_Type := No_Path;
1050       --  The path name of the project file
1051
1052       Display_Path_Name : Path_Name_Type := No_Path;
1053       --  The path name used for display purposes. May be different from
1054       --  Path_Name for platforms where the file names are case-insensitive.
1055
1056       Virtual : Boolean := False;
1057       --  True for virtual extending projects
1058
1059       Location : Source_Ptr := No_Location;
1060       --  The location in the project file source of the reserved word project
1061
1062       Mains : String_List_Id := Nil_String;
1063       --  List of mains specified by attribute Main
1064
1065       Directory : Path_Name_Type := No_Path;
1066       --  Path name of the directory where the project file resides
1067
1068       Display_Directory : Path_Name_Type := No_Path;
1069       --  The path name of the project directory, for display purposes. May be
1070       --  different from Directory for platforms where the file names are
1071       --  case-insensitive.
1072
1073       Dir_Path : String_Access;
1074       --  Same as Directory, but as an access to String
1075
1076       Library : Boolean := False;
1077       --  True if this is a library project
1078
1079       Library_Dir : Path_Name_Type := No_Path;
1080       --  If a library project, path name of the directory where the library
1081       --  resides.
1082
1083       Display_Library_Dir : Path_Name_Type := No_Path;
1084       --  The path name of the library directory, for display purposes. May be
1085       --  different from Library_Dir for platforms where the file names are
1086       --  case-insensitive.
1087
1088       Library_TS : Time_Stamp_Type := Empty_Time_Stamp;
1089       --  The timestamp of a library file in a library project
1090
1091       Library_Src_Dir : Path_Name_Type := No_Path;
1092       --  If a Stand-Alone Library project, path name of the directory where
1093       --  the sources of the interfaces of the library are copied. By default,
1094       --  if attribute Library_Src_Dir is not specified, sources of the
1095       --  interfaces are not copied anywhere.
1096
1097       Display_Library_Src_Dir : Path_Name_Type := No_Path;
1098       --  The path name of the library source directory, for display purposes.
1099       --  May be different from Library_Src_Dir for platforms where the file
1100       --  names are case-insensitive.
1101
1102       Library_ALI_Dir : Path_Name_Type := No_Path;
1103       --  In a library project, path name of the directory where the ALI files
1104       --  are copied. If attribute Library_ALI_Dir is not specified, ALI files
1105       --  are copied in the Library_Dir.
1106
1107       Display_Library_ALI_Dir : Path_Name_Type := No_Path;
1108       --  The path name of the library ALI directory, for display purposes. May
1109       --  be different from Library_ALI_Dir for platforms where the file names
1110       --  are case-insensitive.
1111
1112       Library_Name : Name_Id := No_Name;
1113       --  If a library project, name of the library
1114
1115       Library_Kind : Lib_Kind := Static;
1116       --  If a library project, kind of library
1117
1118       Lib_Internal_Name : Name_Id := No_Name;
1119       --  If a library project, internal name store inside the library
1120
1121       Standalone_Library : Boolean := False;
1122       --  Indicate that this is a Standalone Library Project File
1123
1124       Lib_Interface_ALIs : String_List_Id := Nil_String;
1125       --  For Standalone Library Project Files, indicate the list of Interface
1126       --  ALI files.
1127
1128       Lib_Auto_Init : Boolean := False;
1129       --  For non static Stand-Alone Library Project Files, indicate if
1130       --  the library initialisation should be automatic.
1131
1132       Libgnarl_Needed : Yes_No_Unknown := Unknown;
1133       --  Set to True when libgnarl is needed to link
1134
1135       Symbol_Data : Symbol_Record := No_Symbols;
1136       --  Symbol file name, reference symbol file name, symbol policy
1137
1138       Ada_Sources : String_List_Id := Nil_String;
1139       --  The list of all the Ada source file names (gnatmake only).
1140
1141       Sources                 : String_List_Id := Nil_String;
1142       --  Identical to Ada_Sources. For upward compatibility of GPS.
1143
1144       First_Source : Source_Id := No_Source;
1145       Last_Source  : Source_Id := No_Source;
1146       --  Head and tail of the list of sources
1147
1148       Unit_Based_Language_Name  : Name_Id := No_Name;
1149       Unit_Based_Language_Index : Language_Index := No_Language_Index;
1150       --  The name and index, if any, of the unit-based language of some
1151       --  sources of the project. There may be only one unit-based language
1152       --  in one project.
1153
1154       Imported_Directories_Switches : Argument_List_Access := null;
1155       --  List of the source search switches (-I<source dir>) to be used when
1156       --  compiling.
1157
1158       Include_Path : String_Access := null;
1159       --  Value of the environment variable to indicate the source search path,
1160       --  instead of a list of switches (Imported_Directories_Switches).
1161
1162       Include_Path_File : Path_Name_Type := No_Path;
1163       --  The path name of the of the source search directory file
1164
1165       Include_Data_Set : Boolean := False;
1166       --  Set True when Imported_Directories_Switches or Include_Path are set
1167
1168       Include_Language : Language_Index := No_Language_Index;
1169
1170       Source_Dirs : String_List_Id := Nil_String;
1171       --  The list of all the source directories
1172
1173       Known_Order_Of_Source_Dirs : Boolean := True;
1174       --  False, if there is any /** in the Source_Dirs, because in this case
1175       --  the ordering of the source subdirs depend on the OS. If True,
1176       --  duplicate file names in the same project file are allowed.
1177
1178       Object_Directory : Path_Name_Type := No_Path;
1179       --  The path name of the object directory of this project file
1180
1181       Display_Object_Dir : Path_Name_Type := No_Path;
1182       --  The path name of the object directory, for display purposes. May be
1183       --  different from Object_Directory for platforms where the file names
1184       --  are case-insensitive.
1185
1186       Exec_Directory : Path_Name_Type := No_Path;
1187       --  The path name of the exec directory of this project file. Default is
1188       --  equal to Object_Directory.
1189
1190       Display_Exec_Dir : Path_Name_Type := No_Path;
1191       --  The path name of the exec directory, for display purposes. May be
1192       --  different from Exec_Directory for platforms where the file names are
1193       --  case-insensitive.
1194
1195       Extends : Project_Id := No_Project;
1196       --  The reference of the project file, if any, that this project file
1197       --  extends.
1198
1199       Extended_By : Project_Id := No_Project;
1200       --  The reference of the project file, if any, that extends this project
1201       --  file.
1202
1203       Naming : Naming_Data := Standard_Naming_Data;
1204       --  The naming scheme of this project file
1205
1206       First_Language_Processing : Language_Index := No_Language_Index;
1207       --  Comment needed ???
1208
1209       Decl : Declarations := No_Declarations;
1210       --  The declarations (variables, attributes and packages) of this project
1211       --  file.
1212
1213       Imported_Projects : Project_List := Empty_Project_List;
1214       --  The list of all directly imported projects, if any
1215
1216       All_Imported_Projects : Project_List := Empty_Project_List;
1217       --  The list of all projects imported directly or indirectly, if any
1218
1219       Ada_Include_Path : String_Access := null;
1220       --  The cached value of ADA_INCLUDE_PATH for this project file. Do not
1221       --  use this field directly outside of the compiler, use
1222       --  Prj.Env.Ada_Include_Path instead.
1223
1224       Ada_Objects_Path : String_Access := null;
1225       --  The cached value of ADA_OBJECTS_PATH for this project file. Do not
1226       --  use this field directly outside of the compiler, use
1227       --  Prj.Env.Ada_Objects_Path instead.
1228
1229       Objects_Path                  : String_Access := null;
1230       --  ???
1231
1232       Objects_Path_File_With_Libs : Path_Name_Type := No_Path;
1233       --  The cached value of the object path temp file (including library
1234       --  dirs) for this project file.
1235
1236       Objects_Path_File_Without_Libs : Path_Name_Type := No_Path;
1237       --  The cached value of the object path temp file (excluding library
1238       --  dirs) for this project file.
1239
1240       Config_File_Name : Path_Name_Type := No_Path;
1241       --  The path name of the configuration pragmas file, if any
1242
1243       Config_File_Temp : Boolean := False;
1244       --  An indication that the configuration pragmas file is a temporary file
1245       --  that must be deleted at the end.
1246
1247       Linker_Name                    : File_Name_Type  := No_File;
1248       --  Value of attribute Language_Processing'Linker in the project file
1249
1250       Linker_Path                    : Path_Name_Type  := No_Path;
1251       --  Path of linker when attribute Language_Processing'Linker is specified
1252
1253       Minimum_Linker_Options         : Name_List_Index := No_Name_List;
1254       --  List of options specified in attribute
1255       --  Language_Processing'Minimum_Linker_Options.
1256
1257       Config_Checked : Boolean := False;
1258       --  A flag to avoid checking repetitively the configuration pragmas file
1259
1260       Checked : Boolean := False;
1261       --  A flag to avoid checking repetitively the naming scheme of this
1262       --  project file.
1263
1264       Seen : Boolean := False;
1265       --  A flag to mark a project as "visited" to avoid processing the same
1266       --  project several time.
1267
1268       Need_To_Build_Lib : Boolean := False;
1269       --  Indicates that the library of a Library Project needs to be built or
1270       --  rebuilt.
1271
1272       Depth : Natural := 0;
1273       --  The maximum depth of a project in the project graph. Depth of main
1274       --  project is 0.
1275
1276       Unkept_Comments : Boolean := False;
1277       --  True if there are comments in the project sources that cannot be kept
1278       --  in the project tree.
1279
1280       --  For gprmake
1281
1282       Langs          : Languages_In_Project := No_Languages;
1283       Supp_Languages : Supp_Language_Index  := No_Supp_Language_Index;
1284       --  Indicate the different languages of the source of this project
1285
1286       Ada_Sources_Present   : Boolean := True;
1287       Other_Sources_Present : Boolean := True;
1288       First_Other_Source    : Other_Source_Id := No_Other_Source;
1289       Last_Other_Source     : Other_Source_Id := No_Other_Source;
1290       First_Lang_Processing : First_Language_Processing_Data :=
1291                                     Default_First_Language_Processing_Data;
1292       Supp_Language_Processing : Supp_Language_Index := No_Supp_Language_Index;
1293    end record;
1294
1295    function Empty_Project (Tree : Project_Tree_Ref) return Project_Data;
1296    --  Return the representation of an empty project in project Tree tree.
1297    --  The project tree Tree must have been Initialized and/or Reset.
1298
1299    function Is_Extending
1300      (Extending : Project_Id;
1301       Extended  : Project_Id;
1302       In_Tree   : Project_Tree_Ref) return Boolean;
1303
1304    function Is_A_Language
1305      (Tree          : Project_Tree_Ref;
1306       Data          : Project_Data;
1307       Language_Name : String) return Boolean;
1308
1309    function There_Are_Ada_Sources
1310      (In_Tree : Project_Tree_Ref;
1311       Project : Project_Id) return Boolean;
1312
1313    Project_Error : exception;
1314    --  Raised by some subprograms in Prj.Attr
1315
1316    package Project_Table is new GNAT.Dynamic_Tables (
1317      Table_Component_Type => Project_Data,
1318      Table_Index_Type     => Project_Id,
1319      Table_Low_Bound      => 1,
1320      Table_Initial        => 100,
1321      Table_Increment      => 100);
1322    --  The set of all project files
1323
1324    type Spec_Or_Body is
1325      (Specification, Body_Part);
1326
1327    type File_Name_Data is record
1328       Name         : File_Name_Type := No_File;
1329       Index        : Int        := 0;
1330       Display_Name : File_Name_Type := No_File;
1331       Path         : Path_Name_Type := No_Path;
1332       Display_Path : Path_Name_Type := No_Path;
1333       Project      : Project_Id := No_Project;
1334       Needs_Pragma : Boolean    := False;
1335    end record;
1336    --  File and Path name of a spec or body
1337
1338    type File_Names_Data is array (Spec_Or_Body) of File_Name_Data;
1339
1340    type Unit_Index is new Nat;
1341    No_Unit_Index : constant Unit_Index := 0;
1342    type Unit_Data is record
1343       Name       : Name_Id    := No_Name;
1344       File_Names : File_Names_Data;
1345    end record;
1346    --  Name and File and Path names of a unit, with a reference to its
1347    --  GNAT Project File(s).
1348
1349    package Unit_Table is new GNAT.Dynamic_Tables
1350      (Table_Component_Type => Unit_Data,
1351       Table_Index_Type     => Unit_Index,
1352       Table_Low_Bound      => 1,
1353       Table_Initial        => 100,
1354       Table_Increment      => 100);
1355    --  Table of all units in a project tree
1356
1357    package Units_Htable is new Simple_HTable
1358      (Header_Num => Header_Num,
1359       Element    => Unit_Index,
1360       No_Element => No_Unit_Index,
1361       Key        => Name_Id,
1362       Hash       => Hash,
1363       Equal      => "=");
1364    --  Mapping of unit names to indexes in the Units table
1365
1366    type Unit_Project is record
1367       Unit    : Unit_Index := No_Unit_Index;
1368       Project : Project_Id := No_Project;
1369    end record;
1370
1371    No_Unit_Project : constant Unit_Project := (No_Unit_Index, No_Project);
1372
1373    package Files_Htable is new Simple_HTable
1374      (Header_Num => Header_Num,
1375       Element    => Unit_Project,
1376       No_Element => No_Unit_Project,
1377       Key        => File_Name_Type,
1378       Hash       => Hash,
1379       Equal      => "=");
1380    --  Mapping of file names to indexes in the Units table
1381
1382    type Private_Project_Tree_Data is private;
1383    --  Data for a project tree that is used only by the Project Manager
1384
1385    type Project_Tree_Data is
1386       record
1387          --  Languages and sources of the project
1388
1389          First_Language           : Language_Index  := No_Language_Index;
1390          --
1391
1392          First_Source             : Source_Id := No_Source;
1393          --
1394
1395          --  Tables
1396
1397          Languages_Data           : Language_Data_Table.Instance;
1398          Name_Lists               : Name_List_Table.Instance;
1399          String_Elements          : String_Element_Table.Instance;
1400          Variable_Elements        : Variable_Element_Table.Instance;
1401          Array_Elements           : Array_Element_Table.Instance;
1402          Arrays                   : Array_Table.Instance;
1403          Packages                 : Package_Table.Instance;
1404          Project_Lists            : Project_List_Table.Instance;
1405          Projects                 : Project_Table.Instance;
1406          Sources                  : Source_Data_Table.Instance;
1407          Alt_Langs                : Alternate_Language_Table.Instance;
1408          Units                    : Unit_Table.Instance;
1409          Units_HT                 : Units_Htable.Instance;
1410          Files_HT                 : Files_Htable.Instance;
1411          Source_Paths_HT          : Source_Paths_Htable.Instance;
1412
1413          --  For gprmake:
1414
1415          Present_Languages : Present_Language_Table.Instance;
1416          Supp_Suffixes     : Supp_Suffix_Table.Instance;
1417          Supp_Languages    : Supp_Language_Table.Instance;
1418          Other_Sources     : Other_Source_Table.Instance;
1419
1420          --  Private part
1421
1422          Private_Part             : Private_Project_Tree_Data;
1423       end record;
1424    --  Data for a project tree
1425
1426    type Put_Line_Access is access procedure
1427      (Line    : String;
1428       Project : Project_Id;
1429       In_Tree : Project_Tree_Ref);
1430    --  Use to customize error reporting in Prj.Proc and Prj.Nmsc
1431
1432    procedure Expect (The_Token : Token_Type; Token_Image : String);
1433    --  Check that the current token is The_Token. If it is not, then
1434    --  output an error message.
1435
1436    procedure Initialize (Tree : Project_Tree_Ref);
1437    --  This procedure must be called before using any services from the Prj
1438    --  hierarchy. Namet.Initialize must be called before Prj.Initialize.
1439
1440    procedure Reset (Tree : Project_Tree_Ref);
1441    --  This procedure resets all the tables that are used when processing a
1442    --  project file tree. Initialize must be called before the call to Reset.
1443
1444    procedure Register_Default_Naming_Scheme
1445      (Language            : Name_Id;
1446       Default_Spec_Suffix : File_Name_Type;
1447       Default_Body_Suffix : File_Name_Type;
1448       In_Tree             : Project_Tree_Ref);
1449    --  Register the default suffixes for a given language. These extensions
1450    --  will be ignored if the user has specified a new naming scheme in a
1451    --  project file.
1452    --
1453    --  Otherwise, this information will be automatically added to Naming_Data
1454    --  when a project is processed, in the lists Spec_Suffix and Body_Suffix.
1455
1456    generic
1457       type State is limited private;
1458       with procedure Action
1459         (Project    : Project_Id;
1460          With_State : in out State);
1461    procedure For_Every_Project_Imported
1462      (By         : Project_Id;
1463       In_Tree    : Project_Tree_Ref;
1464       With_State : in out State);
1465    --  Call Action for each project imported directly or indirectly by project
1466    --  By. Action is called according to the order of importation: if A
1467    --  imports B, directly or indirectly, Action will be called for A before
1468    --  it is called for B. If two projects import each other directly or
1469    --  indirectly (using at least one "limited with"), it is not specified
1470    --  for which of these two projects Action will be called first. Projects
1471    --  that are extended by other projects are not considered. With_State may
1472    --  be used by Action to choose a behavior or to report some global result.
1473
1474    function Extend_Name
1475      (File        : File_Name_Type;
1476       With_Suffix : String) return File_Name_Type;
1477    --  Replace the extension of File with With_Suffix
1478
1479    function Object_Name
1480      (Source_File_Name : File_Name_Type) return File_Name_Type;
1481    --  Returns the object file name corresponding to a source file name
1482
1483    function Dependency_Name
1484      (Source_File_Name : File_Name_Type;
1485       Dependency       : Dependency_File_Kind) return File_Name_Type;
1486    --  Returns the dependency file name corresponding to a source file name
1487
1488    function Switches_Name
1489      (Source_File_Name : File_Name_Type) return File_Name_Type;
1490    --  Returns the switches file name corresponding to a source file name
1491
1492    --  For gprmake
1493
1494    function Body_Suffix_Of
1495      (Language   : Language_Index;
1496       In_Project : Project_Data;
1497       In_Tree    : Project_Tree_Ref) return String;
1498    --  Returns the suffix of sources of language Language in project In_Project
1499    --  in project tree In_Tree.
1500
1501    function Is_Present
1502      (Language   : Language_Index;
1503       In_Project : Project_Data;
1504       In_Tree    : Project_Tree_Ref) return Boolean;
1505    --  Return True when Language is one of the languages used in
1506    --  project In_Project.
1507
1508    procedure Set
1509      (Language   : Language_Index;
1510       Present    : Boolean;
1511       In_Project : in out Project_Data;
1512       In_Tree    : Project_Tree_Ref);
1513    --  Indicate if Language is or not a language used in project In_Project
1514
1515    function Language_Processing_Data_Of
1516      (Language   : Language_Index;
1517       In_Project : Project_Data;
1518       In_Tree    : Project_Tree_Ref) return Language_Processing_Data;
1519    --  Return the Language_Processing_Data for language Language in project
1520    --  In_Project. Return the default when no Language_Processing_Data are
1521    --  defined for the language.
1522
1523    procedure Set
1524      (Language_Processing : Language_Processing_Data;
1525       For_Language        : Language_Index;
1526       In_Project          : in out Project_Data;
1527       In_Tree             : Project_Tree_Ref);
1528    --  Set the Language_Processing_Data for language Language in project
1529    --  In_Project.
1530
1531    function Suffix_Of
1532      (Language   : Language_Index;
1533       In_Project : Project_Data;
1534       In_Tree    : Project_Tree_Ref) return File_Name_Type;
1535    --  Return the suffix for language Language in project In_Project. Return
1536    --  No_Name when no suffix is defined for the language.
1537
1538    procedure Set
1539      (Suffix       : File_Name_Type;
1540       For_Language : Language_Index;
1541       In_Project   : in out Project_Data;
1542       In_Tree      : Project_Tree_Ref);
1543    --  Set the suffix for language Language in project In_Project
1544
1545    ----------------
1546    -- Temp Files --
1547    ----------------
1548
1549    procedure Record_Temp_File (Path : Path_Name_Type);
1550    --  Record the path of a newly created temporary file, so that it can be
1551    --  deleted later.
1552
1553    procedure Delete_All_Temp_Files;
1554    --  Delete all recorded temporary files
1555
1556 private
1557
1558    All_Packages : constant String_List_Access := null;
1559
1560    No_Project_Tree : constant Project_Tree_Ref := null;
1561
1562    Ignored : constant Variable_Kind := Single;
1563
1564    Nil_Variable_Value : constant Variable_Value :=
1565      (Project  => No_Project,
1566       Kind     => Undefined,
1567       Location => No_Location,
1568       Default  => False);
1569
1570    Virtual_Prefix : constant String := "v$";
1571    --  The prefix for virtual extending projects. Because of the '$', which is
1572    --  normally forbidden for project names, there cannot be any name clash.
1573
1574    Empty_Name : Name_Id;
1575    --  Name_Id for an empty name (no characters). Initialized by the call
1576    --  to procedure Initialize.
1577
1578    procedure Add_To_Buffer
1579      (S    : String;
1580       To   : in out String_Access;
1581       Last : in out Natural);
1582    --  Append a String to the Buffer
1583
1584    type Naming_Id is new Nat;
1585
1586    package Naming_Table is new GNAT.Dynamic_Tables
1587      (Table_Component_Type => Naming_Data,
1588       Table_Index_Type     => Naming_Id,
1589       Table_Low_Bound      => 1,
1590       Table_Initial        => 5,
1591       Table_Increment      => 100);
1592    --  Comment ???
1593
1594    package Path_File_Table is new GNAT.Dynamic_Tables
1595      (Table_Component_Type => Path_Name_Type,
1596       Table_Index_Type     => Natural,
1597       Table_Low_Bound      => 1,
1598       Table_Initial        => 50,
1599       Table_Increment      => 100);
1600    --  Table storing all the temp path file names.
1601    --  Used by Delete_All_Path_Files.
1602
1603    package Source_Path_Table is new GNAT.Dynamic_Tables
1604      (Table_Component_Type => Name_Id,
1605       Table_Index_Type     => Natural,
1606       Table_Low_Bound      => 1,
1607       Table_Initial        => 50,
1608       Table_Increment      => 100);
1609    --  A table to store the source dirs before creating the source path file
1610
1611    package Object_Path_Table is new GNAT.Dynamic_Tables
1612      (Table_Component_Type => Path_Name_Type,
1613       Table_Index_Type     => Natural,
1614       Table_Low_Bound      => 1,
1615       Table_Initial        => 50,
1616       Table_Increment      => 100);
1617    --  A table to store the object dirs, before creating the object path file
1618
1619    type Private_Project_Tree_Data is record
1620       Namings        : Naming_Table.Instance;
1621       Path_Files     : Path_File_Table.Instance;
1622       Source_Paths   : Source_Path_Table.Instance;
1623       Object_Paths   : Object_Path_Table.Instance;
1624       Default_Naming : Naming_Data;
1625    end record;
1626    --  Type to represent the part of a project tree which is private to the
1627    --  Project Manager.
1628
1629 end Prj;