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) 2001-2004 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 2,  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 COPYING.  If not, write --
  19 -- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
  20 -- MA 02111-1307, USA.                                                      --
  21 --                                                                          --
  22 -- GNAT was originally developed  by the GNAT team at  New York University. --
  23 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  24 --                                                                          --
  25 ------------------------------------------------------------------------------
  26
  27 --  The following package declares the data types for GNAT project.
  28 --  These data types may be used by GNAT Project-aware tools.
  29
  30 --  Children of these package implements various services on these data types.
  31 --  See in particular Prj.Pars and Prj.Env.
  32
  33 with Casing; use Casing;
  34 with Scans;  use Scans;
  35 with Table;
  36 with Types;  use Types;
  37
  38 with GNAT.OS_Lib; use GNAT.OS_Lib;
  39
  40 package Prj is
  41
  42    Empty_Name : Name_Id;
  43    --  Name_Id for an empty name (no characters). Initialized by the call
  44    --  to procedure Initialize.
  45
  46    All_Packages : constant String_List_Access := null;
  47    --  Default value of parameter Packages of procedures Parse, in Prj.Pars and
  48    --  Prj.Part, indicating that all packages should be checked.
  49
  50    Virtual_Prefix : constant String := "v$";
  51    --  The prefix for virtual extending projects. Because of the '$', which is
  52    --  normally forbidden for project names, there cannot be any name clash.
  53
  54    Project_File_Extension : String := ".gpr";
  55    --  The standard project file name extension. It is not a constant, because
  56    --  Canonical_Case_File_Name is called on this variable in the body of Prj.
  57
  58    Default_Ada_Spec_Suffix : Name_Id;
  59    --  The Name_Id for the standard GNAT suffix for Ada spec source file
  60    --  name ".ads". Initialized by Prj.Initialize.
  61
  62    Default_Ada_Body_Suffix : Name_Id;
  63    --  The Name_Id for the standard GNAT suffix for Ada body source file
  64    --  name ".adb". Initialized by Prj.Initialize.
  65
  66    Slash : Name_Id;
  67    --  "/", used as the path of locally removed files
  68
  69    type Languages_Processed is (Ada_Language, Other_Languages, All_Languages);
  70    --  To specify how to process project files
  71
  72    type Programming_Language is
  73      (Lang_Ada, Lang_C, Lang_C_Plus_Plus);
  74    --  The set of languages supported
  75
  76    subtype Other_Programming_Language is
  77      Programming_Language range Lang_C .. Programming_Language'Last;
  78    --  The set of non-Ada languages supported
  79
  80    type Languages_In_Project is array (Programming_Language) of Boolean;
  81    --  Set of supported languages used in a project
  82
  83    No_Languages : constant Languages_In_Project := (others => False);
  84    --  No supported languages are used
  85
  86    type Impl_Suffix_Array is array (Programming_Language) of Name_Id;
  87    --  Suffixes for the non spec sources of the different supported languages
  88    --  in a project.
  89
  90    No_Impl_Suffixes : constant Impl_Suffix_Array := (others => No_Name);
  91    --  A default value for the non spec source suffixes
  92
  93    Lang_Ada_Name         : aliased String := "ada";
  94    Lang_C_Name           : aliased String := "c";
  95    Lang_C_Plus_Plus_Name : aliased String := "c++";
  96    Lang_Names : constant array (Programming_Language) of String_Access :=
  97      (Lang_Ada         => Lang_Ada_Name        'Access,
  98       Lang_C           => Lang_C_Name          'Access,
  99       Lang_C_Plus_Plus => Lang_C_Plus_Plus_Name'Access);
 100    --  Names of the supported programming languages, to be used after switch
 101    --  -x when using a GCC compiler.
 102
 103    Lang_Name_Ids : array (Programming_Language) of Name_Id;
 104    --  Same as Lang_Names, but using Name_Id, instead of String_Access.
 105    --  Initialized by Prj.Initialize.
 106
 107    Lang_Ada_Display_Name         : aliased String := "Ada";
 108    Lang_C_Display_Name           : aliased String := "C";
 109    Lang_C_Plus_Plus_Display_Name : aliased String := "C++";
 110    Lang_Display_Names :
 111      constant array (Programming_Language) of String_Access :=
 112        (Lang_Ada         => Lang_Ada_Display_Name        'Access,
 113         Lang_C           => Lang_C_Display_Name          'Access,
 114         Lang_C_Plus_Plus => Lang_C_Plus_Plus_Display_Name'Access);
 115    --  Names of the supported programming languages, to be used for display
 116    --  purposes.
 117
 118    Ada_Impl_Suffix         : aliased String := ".adb";
 119    C_Impl_Suffix           : aliased String := ".c";
 120    C_Plus_Plus_Impl_Suffix : aliased String := ".cc";
 121    Lang_Suffixes : constant array (Programming_Language) of String_Access :=
 122      (Lang_Ada         => Ada_Impl_Suffix        'Access,
 123       Lang_C           => C_Impl_Suffix          'Access,
 124       Lang_C_Plus_Plus => C_Plus_Plus_Impl_Suffix'Access);
 125    --  Default extension of the sources of the different languages.
 126
 127    Lang_Suffix_Ids         : array (Programming_Language) of Name_Id;
 128    --  Same as Lang_Suffixes, but using Name_Id, instead of String_Access.
 129    --  Initialized by Prj.Initialize.
 130
 131    Gnatmake_String    : aliased String := "gnatmake";
 132    Gcc_String         : aliased String := "gcc";
 133    G_Plus_Plus_String : aliased String := "g++";
 134    Default_Compiler_Names  :
 135      constant array (Programming_Language) of String_Access :=
 136      (Lang_Ada         => Gnatmake_String   'Access,
 137       Lang_C           => Gcc_String        'Access,
 138       Lang_C_Plus_Plus => G_Plus_Plus_String'Access);
 139    --  Default names of the compilers for the supported languages.
 140    --  Used when no IDE'Compiler_Command is specified for a language.
 141    --  For Ada, specify the gnatmake executable.
 142
 143    Ada_Args_Strings        : aliased String := "";
 144    C_Args_String           : aliased String := "c";
 145    C_Plus_Plus_Args_String : aliased String := "xx";
 146    Lang_Args : constant array (Programming_Language) of String_Access :=
 147      (Lang_Ada         => Ada_Args_Strings       'Access,
 148       Lang_C           => C_Args_String          'Access,
 149       Lang_C_Plus_Plus => C_Plus_Plus_Args_String'Access);
 150    --  For each supported language, the string between "-c" and "args" to
 151    --  be used in the gprmake switch for the start of the compiling switch
 152    --  section for each supported language. For example, "-ccargs" indicates
 153    --  the start of the C compiler switch section.
 154
 155    type Other_Source_Id is new Nat;
 156    No_Other_Source : constant Other_Source_Id := 0;
 157    type Other_Source is record
 158       Language         : Programming_Language; --  language of the source
 159       File_Name        : Name_Id;              --  source file simple name
 160       Path_Name        : Name_Id;              --  source full path name
 161       Source_TS        : Time_Stamp_Type;      --  source file time stamp
 162       Object_Name      : Name_Id;              --  object file simple name
 163       Object_Path      : Name_Id;              --  object full path name
 164       Object_TS        : Time_Stamp_Type;      --  object file time stamp
 165       Dep_Name         : Name_Id;              --  dependency file simple name
 166       Dep_Path         : Name_Id;              --  dependency full path name
 167       Dep_TS           : Time_Stamp_Type;      --  dependency file time stamp
 168       Naming_Exception : Boolean := False;     --  True if a naming exception
 169       Next             : Other_Source_Id := No_Other_Source;
 170    end record;
 171    --  Data for a source in a language other than Ada
 172
 173    package Other_Sources is new Table.Table
 174      (Table_Component_Type => Other_Source,
 175       Table_Index_Type     => Other_Source_Id,
 176       Table_Low_Bound      => 1,
 177       Table_Initial        => 200,
 178       Table_Increment      => 100,
 179       Table_Name           => "Prj.Other_Sources");
 180    --  The table for sources of languages other than Ada
 181
 182    type Verbosity is (Default, Medium, High);
 183    --  Verbosity when parsing GNAT Project Files
 184    --    Default is default (very quiet, if no errors).
 185    --    Medium is more verbose.
 186    --    High is extremely verbose.
 187
 188    type Lib_Kind is (Static, Dynamic, Relocatable);
 189    type Policy is (Autonomous, Compliant, Controlled, Restricted);
 190    --  Type to specify the symbol policy, when symbol control is supported.
 191    --  See full explanation about this type in package Symbols.
 192    --  Autonomous: Create a symbol file without considering any reference
 193    --  Compliant: Try to be as compatible as possible with an existing ref
 194    --  Controlled: Fail if symbols are not the same as those in the reference
 195    --  Restricted: Restrict the symbols to those in the symbol file
 196
 197    type Symbol_Record is record
 198       Symbol_File   : Name_Id := No_Name;
 199       Reference     : Name_Id := No_Name;
 200       Symbol_Policy : Policy  := Autonomous;
 201    end record;
 202    --  Type to keep the symbol data to be used when building a shared library
 203
 204    No_Symbols : Symbol_Record :=
 205      (Symbol_File   => No_Name,
 206       Reference     => No_Name,
 207       Symbol_Policy => Autonomous);
 208    --  The default value of the symbol data
 209
 210    function Empty_String return Name_Id;
 211    --  Return the Name_Id for an empty string ""
 212
 213    type Project_Id is new Nat;
 214    No_Project : constant Project_Id := 0;
 215    --  Id of a Project File
 216
 217    type String_List_Id is new Nat;
 218    Nil_String : constant String_List_Id := 0;
 219    type String_Element is record
 220       Value    : Name_Id        := No_Name;
 221       Index    : Int            := 0;
 222       Display_Value : Name_Id   := No_Name;
 223       Location : Source_Ptr     := No_Location;
 224       Flag     : Boolean        := False;
 225       Next     : String_List_Id := Nil_String;
 226    end record;
 227    --  To hold values for string list variables and array elements.
 228    --  Component Flag may be used for various purposes. For source
 229    --  directories, it indicates if the directory contains Ada source(s).
 230
 231    package String_Elements is new Table.Table
 232      (Table_Component_Type => String_Element,
 233       Table_Index_Type     => String_List_Id,
 234       Table_Low_Bound      => 1,
 235       Table_Initial        => 200,
 236       Table_Increment      => 100,
 237       Table_Name           => "Prj.String_Elements");
 238    --  The table for string elements in string lists
 239
 240    type Variable_Kind is (Undefined, List, Single);
 241    --  Different kinds of variables
 242
 243    subtype Defined_Variable_Kind is Variable_Kind range List .. Single;
 244    --  The defined kinds of variables
 245
 246    Ignored : constant Variable_Kind := Single;
 247    --  Used to indicate that a package declaration must be ignored
 248    --  while processing the project tree (unknown package name).
 249
 250    type Variable_Value (Kind : Variable_Kind := Undefined) is record
 251       Project  : Project_Id := No_Project;
 252       Location : Source_Ptr := No_Location;
 253       Default  : Boolean    := False;
 254       case Kind is
 255          when Undefined =>
 256             null;
 257          when List =>
 258             Values : String_List_Id := Nil_String;
 259          when Single =>
 260             Value : Name_Id := No_Name;
 261             Index : Int     := 0;
 262       end case;
 263    end record;
 264    --  Values for variables and array elements. Default is True if the
 265    --  current value is the default one for the variable
 266
 267    Nil_Variable_Value : constant Variable_Value :=
 268      (Project  => No_Project,
 269       Kind     => Undefined,
 270       Location => No_Location,
 271       Default  => False);
 272    --  Value of a non existing variable or array element
 273
 274    type Variable_Id is new Nat;
 275    No_Variable : constant Variable_Id := 0;
 276    type Variable is record
 277       Next     : Variable_Id := No_Variable;
 278       Name     : Name_Id;
 279       Value    : Variable_Value;
 280    end record;
 281    --  To hold the list of variables in a project file and in packages
 282
 283    package Variable_Elements is new Table.Table
 284      (Table_Component_Type => Variable,
 285       Table_Index_Type     => Variable_Id,
 286       Table_Low_Bound      => 1,
 287       Table_Initial        => 200,
 288       Table_Increment      => 100,
 289       Table_Name           => "Prj.Variable_Elements");
 290    --  The table of variable in list of variables
 291
 292    type Array_Element_Id is new Nat;
 293    No_Array_Element : constant Array_Element_Id := 0;
 294    type Array_Element is record
 295       Index                : Name_Id;
 296       Src_Index            : Int := 0;
 297       Index_Case_Sensitive : Boolean := True;
 298       Value                : Variable_Value;
 299       Next                 : Array_Element_Id := No_Array_Element;
 300    end record;
 301    --  Each Array_Element represents an array element and is linked (Next)
 302    --  to the next array element, if any, in the array.
 303
 304    package Array_Elements is new Table.Table
 305      (Table_Component_Type => Array_Element,
 306       Table_Index_Type     => Array_Element_Id,
 307       Table_Low_Bound      => 1,
 308       Table_Initial        => 200,
 309       Table_Increment      => 100,
 310       Table_Name           => "Prj.Array_Elements");
 311    --  The table that contains all array elements
 312
 313    type Array_Id is new Nat;
 314    No_Array : constant Array_Id := 0;
 315    type Array_Data is record
 316       Name  : Name_Id          := No_Name;
 317       Value : Array_Element_Id := No_Array_Element;
 318       Next  : Array_Id         := No_Array;
 319    end record;
 320    --  Each Array_Data value represents an array.
 321    --  Value is the id of the first element.
 322    --  Next is the id of the next array in the project file or package.
 323
 324    package Arrays is new Table.Table
 325      (Table_Component_Type => Array_Data,
 326       Table_Index_Type     => Array_Id,
 327       Table_Low_Bound      => 1,
 328       Table_Initial        => 200,
 329       Table_Increment      => 100,
 330       Table_Name           => "Prj.Arrays");
 331    --  The table that contains all arrays
 332
 333    type Package_Id is new Nat;
 334    No_Package : constant Package_Id := 0;
 335    type Declarations is record
 336       Variables  : Variable_Id := No_Variable;
 337       Attributes : Variable_Id := No_Variable;
 338       Arrays     : Array_Id    := No_Array;
 339       Packages   : Package_Id  := No_Package;
 340    end record;
 341    --  Contains the declarations (variables, single and array attributes,
 342    --  packages) for a project or a package in a project.
 343
 344    No_Declarations : constant Declarations :=
 345      (Variables  => No_Variable,
 346       Attributes => No_Variable,
 347       Arrays     => No_Array,
 348       Packages   => No_Package);
 349    --  Default value of Declarations: indicates that there is no declarations.
 350
 351    type Package_Element is record
 352       Name   : Name_Id      := No_Name;
 353       Decl   : Declarations := No_Declarations;
 354       Parent : Package_Id   := No_Package;
 355       Next   : Package_Id   := No_Package;
 356    end record;
 357    --  A package. Includes declarations that may include other packages.
 358
 359    package Packages is new Table.Table
 360      (Table_Component_Type => Package_Element,
 361       Table_Index_Type     => Package_Id,
 362       Table_Low_Bound      => 1,
 363       Table_Initial        => 100,
 364       Table_Increment      => 100,
 365       Table_Name           => "Prj.Packages");
 366    --  The table that contains all packages.
 367
 368    function Image (Casing : Casing_Type) return String;
 369    --  Similar to 'Image (but avoid use of this attribute in compiler)
 370
 371    function Value (Image : String) return Casing_Type;
 372    --  Similar to 'Value (but avoid use of this attribute in compiler)
 373    --  Raises Constraint_Error if not a Casing_Type image.
 374
 375    --  The following record contains data for a naming scheme
 376
 377    type Naming_Data is record
 378       Current_Language : Name_Id := No_Name;
 379       --  The programming language being currently considered
 380
 381       Dot_Replacement : Name_Id := No_Name;
 382       --  The string to replace '.' in the source file name (for Ada).
 383
 384       Dot_Repl_Loc : Source_Ptr := No_Location;
 385       --  The position in the project file source where
 386       --  Dot_Replacement is defined.
 387
 388       Casing : Casing_Type := All_Lower_Case;
 389       --  The casing of the source file name (for Ada).
 390
 391       Spec_Suffix : Array_Element_Id := No_Array_Element;
 392       --  The string to append to the unit name for the
 393       --  source file name of a spec.
 394       --  Indexed by the programming language.
 395
 396       Current_Spec_Suffix : Name_Id := No_Name;
 397       --  The "spec" suffix of the current programming language
 398
 399       Spec_Suffix_Loc : Source_Ptr := No_Location;
 400       --  The position in the project file source where
 401       --  Current_Spec_Suffix is defined.
 402
 403       Body_Suffix : Array_Element_Id := No_Array_Element;
 404       --  The string to append to the unit name for the
 405       --  source file name of a body.
 406       --  Indexed by the programming language.
 407
 408       Current_Body_Suffix : Name_Id := No_Name;
 409       --  The "body" suffix of the current programming language
 410
 411       Body_Suffix_Loc : Source_Ptr := No_Location;
 412       --  The position in the project file source where
 413       --  Current_Body_Suffix is defined.
 414
 415       Separate_Suffix : Name_Id := No_Name;
 416       --  String to append to unit name for source file name of an Ada subunit.
 417
 418       Sep_Suffix_Loc : Source_Ptr := No_Location;
 419       --  Position in the project file source where Separate_Suffix is defined.
 420
 421       Specs : Array_Element_Id := No_Array_Element;
 422       --  An associative array mapping individual specs to source file names.
 423       --  This is specific to Ada.
 424
 425       Bodies : Array_Element_Id := No_Array_Element;
 426       --  An associative array mapping individual bodies to source file names.
 427       --  This is specific to Ada.
 428
 429       Specification_Exceptions : Array_Element_Id := No_Array_Element;
 430       --  An associative array listing spec file names that do not have the
 431       --  spec suffix. Not used by Ada. Indexed by programming language name.
 432
 433       Implementation_Exceptions : Array_Element_Id := No_Array_Element;
 434       --  An associative array listing body file names that do not have the
 435       --  body suffix. Not used by Ada. Indexed by programming language name.
 436
 437    end record;
 438
 439    function Standard_Naming_Data return Naming_Data;
 440    pragma Inline (Standard_Naming_Data);
 441    --  The standard GNAT naming scheme
 442
 443    function Same_Naming_Scheme
 444      (Left, Right : Naming_Data)
 445       return        Boolean;
 446    --  Returns True if Left and Right are the same naming scheme
 447    --  not considering Specs and Bodies.
 448
 449    type Project_List is new Nat;
 450    Empty_Project_List : constant Project_List := 0;
 451    --  A list of project files
 452
 453    type Project_Element is record
 454       Project : Project_Id   := No_Project;
 455       Next    : Project_List := Empty_Project_List;
 456    end record;
 457    --  Element in a list of project files. Next is the id of the next
 458    --  project file in the list.
 459
 460    package Project_Lists is new Table.Table
 461      (Table_Component_Type => Project_Element,
 462       Table_Index_Type     => Project_List,
 463       Table_Low_Bound      => 1,
 464       Table_Initial        => 100,
 465       Table_Increment      => 100,
 466       Table_Name           => "Prj.Project_Lists");
 467    --  The table that contains the lists of project files
 468
 469    --  The following record describes a project file representation
 470
 471    type Project_Data is record
 472       Languages : Languages_In_Project := No_Languages;
 473       --  Indicate the different languages of the source of this project
 474
 475       Impl_Suffixes : Impl_Suffix_Array := No_Impl_Suffixes;
 476       --  The source suffixes of the different languages other than Ada
 477
 478       First_Referred_By  : Project_Id := No_Project;
 479       --  The project, if any, that was the first to be known
 480       --  as importing or extending this project.
 481       --  Set by Prj.Proc.Process.
 482
 483       Name : Name_Id := No_Name;
 484       --  The name of the project. Set by Prj.Proc.Process.
 485
 486       Path_Name : Name_Id := No_Name;
 487       --  The path name of the project file. Set by Prj.Proc.Process.
 488
 489       Display_Path_Name : Name_Id := No_Name;
 490       --  The path name used for display purposes. May be different from
 491       --  Path_Name for platforms where the file names are case-insensitive.
 492
 493       Virtual : Boolean := False;
 494       --  True for virtual extending projects
 495
 496       Location : Source_Ptr := No_Location;
 497       --  The location in the project file source of the reserved word
 498       --  project. Set by Prj.Proc.Process.
 499
 500       Mains : String_List_Id := Nil_String;
 501       --  List of mains specified by attribute Main. Set by Prj.Nmsc.Ada_Check.
 502
 503       Directory : Name_Id := No_Name;
 504       --  Directory where the project file resides. Set by Prj.Proc.Process.
 505
 506       Display_Directory : Name_Id := No_Name;
 507
 508       Dir_Path : String_Access;
 509       --  Same as Directory, but as an access to String.
 510       --  Set by Make.Compile_Sources.Collect_Arguments_And_Compile.
 511
 512       Library : Boolean := False;
 513       --  True if this is a library project.
 514       --  Set by Prj.Nmsc.Language_Independent_Check.
 515
 516       Library_Dir : Name_Id := No_Name;
 517       --  If a library project, directory where resides the library
 518       --  Set by Prj.Nmsc.Language_Independent_Check.
 519
 520       Display_Library_Dir : Name_Id := No_Name;
 521       --  The name of the library directory, for display purposes.
 522       --  May be different from Library_Dir for platforms where the file names
 523       --  are case-insensitive.
 524
 525       Library_Src_Dir : Name_Id := No_Name;
 526       --  If a library project, directory where the sources and the ALI files
 527       --  of the library are copied. By default, if attribute Library_Src_Dir
 528       --  is not specified, sources are not copied anywhere and ALI files are
 529       --  copied in the Library Directory.
 530       --  Set by Prj.Nmsc.Language_Independent_Check.
 531
 532       Display_Library_Src_Dir : Name_Id := No_Name;
 533       --  The name of the library source directory, for display purposes.
 534       --  May be different from Library_Src_Dir for platforms where the file
 535       --  names are case-insensitive.
 536
 537       Library_Name : Name_Id := No_Name;
 538       --  If a library project, name of the library
 539       --  Set by Prj.Nmsc.Language_Independent_Check.
 540
 541       Library_Kind : Lib_Kind := Static;
 542       --  If a library project, kind of library
 543       --  Set by Prj.Nmsc.Language_Independent_Check.
 544
 545       Lib_Internal_Name : Name_Id := No_Name;
 546       --  If a library project, internal name store inside the library
 547       --  Set by Prj.Nmsc.Language_Independent_Check.
 548
 549       Standalone_Library : Boolean := False;
 550       --  Indicate that this is a Standalone Library Project File.
 551       --  Set by Prj.Nmsc.Ada_Check.
 552
 553       Lib_Interface_ALIs : String_List_Id := Nil_String;
 554       --  For Standalone Library Project Files, indicate the list
 555       --  of Interface ALI files. Set by Prj.Nmsc.Ada_Check.
 556
 557       Lib_Auto_Init : Boolean := False;
 558       --  For non static Standalone Library Project Files, indicate if
 559       --  the library initialisation should be automatic.
 560
 561       Symbol_Data : Symbol_Record := No_Symbols;
 562       --  Symbol file name, reference symbol file name, symbol policy
 563
 564       Ada_Sources_Present : Boolean := True;
 565       --  A flag that indicates if there are Ada sources in this project file.
 566       --  There are no sources if any of the following is true:
 567       --    1) Source_Dirs is specified as an empty list
 568       --    2) Source_Files is specified as an empty list
 569       --    3) Ada is not in the list of the specified Languages
 570
 571       Other_Sources_Present : Boolean := True;
 572       --  A flag that indicates that there are non-Ada sources in this project
 573
 574       Sources : String_List_Id := Nil_String;
 575       --  The list of all the source file names. Set by
 576       --  Prj.Nmsc.Check_Ada_Naming_Scheme.
 577
 578       First_Other_Source : Other_Source_Id := No_Other_Source;
 579       Last_Other_Source  : Other_Source_Id := No_Other_Source;
 580       --  Head and tail of the list of sources of languages other than Ada
 581
 582       Imported_Directories_Switches : Argument_List_Access := null;
 583       --  List of the -I switches to be used when compiling sources of
 584       --  languages other than Ada.
 585
 586       Include_Path : String_Access := null;
 587       --  Value to be used as CPATH, when using a GCC, instead of a list of
 588       --  -I switches.
 589
 590       Include_Data_Set : Boolean := False;
 591       --  Set True when Imported_Directories_Switches or Include_Path are set
 592
 593       Source_Dirs : String_List_Id := Nil_String;
 594       --  The list of all the source directories.
 595       --  Set by Prj.Nmsc.Language_Independent_Check.
 596
 597       Known_Order_Of_Source_Dirs : Boolean := True;
 598       --  False, if there is any /** in the Source_Dirs, because in this case
 599       --  the ordering of the source subdirs depend on the OS. If True,
 600       --  duplicate file names in the same project file are allowed.
 601
 602       Object_Directory : Name_Id := No_Name;
 603       --  The object directory of this project file.
 604       --  Set by Prj.Nmsc.Language_Independent_Check.
 605
 606       Display_Object_Dir : Name_Id := No_Name;
 607       --  The name of the object directory, for display purposes.
 608       --  May be different from Object_Directory for platforms where the file
 609       --  names are case-insensitive.
 610
 611       Exec_Directory : Name_Id := No_Name;
 612       --  The exec directory of this project file. Default is equal to
 613       --  Object_Directory. Set by Prj.Nmsc.Language_Independent_Check.
 614
 615       Display_Exec_Dir : Name_Id := No_Name;
 616       --  The name of the exec directory, for display purposes.
 617       --  May be different from Exec_Directory for platforms where the file
 618       --  names are case-insensitive.
 619
 620       Extends : Project_Id := No_Project;
 621       --  The reference of the project file, if any, that this
 622       --  project file extends. Set by Prj.Proc.Process.
 623
 624       Extended_By : Project_Id := No_Project;
 625       --  The reference of the project file, if any, that
 626       --  extends this project file. Set by Prj.Proc.Process.
 627
 628       Naming : Naming_Data := Standard_Naming_Data;
 629       --  The naming scheme of this project file.
 630       --  Set by Prj.Nmsc.Check_Naming_Scheme.
 631
 632       Decl : Declarations := No_Declarations;
 633       --  The declarations (variables, attributes and packages) of this
 634       --  project file. Set by Prj.Proc.Process.
 635
 636       Imported_Projects : Project_List := Empty_Project_List;
 637       --  The list of all directly imported projects, if any.
 638       --  Set by Prj.Proc.Process.
 639
 640       Ada_Include_Path : String_Access := null;
 641       --  The cached value of ADA_INCLUDE_PATH for this project file.
 642       --  Do not use this field directly outside of the compiler, use
 643       --  Prj.Env.Ada_Include_Path instead. Set by Prj.Env.Ada_Include_Path.
 644
 645       Ada_Objects_Path : String_Access := null;
 646       --  The cached value of ADA_OBJECTS_PATH for this project file.
 647       --  Do not use this field directly outside of the compiler, use
 648       --  Prj.Env.Ada_Objects_Path instead. Set by Prj.Env.Ada_Objects_Path
 649
 650       Include_Path_File : Name_Id := No_Name;
 651       --  The cached value of the source path temp file for this project file.
 652       --  Set by gnatmake (Prj.Env.Set_Ada_Paths).
 653
 654       Objects_Path_File_With_Libs : Name_Id := No_Name;
 655       --  The cached value of the object path temp file (including library
 656       --  dirs) for this project file. Set by gnatmake (Prj.Env.Set_Ada_Paths).
 657
 658       Objects_Path_File_Without_Libs : Name_Id := No_Name;
 659       --  The cached value of the object path temp file (excluding library
 660       --  dirs) for this project file. Set by gnatmake (Prj.Env.Set_Ada_Paths).
 661
 662       Config_File_Name : Name_Id := No_Name;
 663       --  The name of the configuration pragmas file, if any.
 664       --  Set by gnatmake (Prj.Env.Create_Config_Pragmas_File).
 665
 666       Config_File_Temp : Boolean := False;
 667       --  An indication that the configuration pragmas file is
 668       --  a temporary file that must be deleted at the end.
 669       --  Set by gnatmake (Prj.Env.Create_Config_Pragmas_File).
 670
 671       Config_Checked : Boolean := False;
 672       --  A flag to avoid checking repetitively the configuration pragmas file.
 673       --  Set by gnatmake (Prj.Env.Create_Config_Pragmas_File).
 674
 675       Language_Independent_Checked : Boolean := False;
 676       --  A flag that indicates that the project file has been checked
 677       --  for language independent features: Object_Directory,
 678       --  Source_Directories, Library, non empty Naming Suffixes.
 679
 680       Checked : Boolean := False;
 681       --  A flag to avoid checking repetitively the naming scheme of
 682       --  this project file. Set by Prj.Nmsc.Check_Ada_Naming_Scheme.
 683
 684       Seen                           : Boolean := False;
 685       --  A flag to mark a project as "visited" to avoid processing the same
 686       --  project several time.
 687
 688       Need_To_Build_Lib : Boolean := False;
 689       --  Indicates that the library of a Library Project needs to be built or
 690       --  rebuilt.
 691
 692       Depth : Natural := 0;
 693       --  The maximum depth of a project in the project graph.
 694       --  Depth of main project is 0.
 695
 696       Unkept_Comments : Boolean := False;
 697       --  True if there are comments in the project sources that cannot
 698       --  be kept in the project tree.
 699
 700    end record;
 701
 702    Project_Error : exception;
 703    --  Raised by some subprograms in Prj.Attr.
 704
 705    function Empty_Project return Project_Data;
 706    --  Return the representation of an empty project
 707
 708    package Projects is new Table.Table (
 709      Table_Component_Type => Project_Data,
 710      Table_Index_Type     => Project_Id,
 711      Table_Low_Bound      => 1,
 712      Table_Initial        => 100,
 713      Table_Increment      => 100,
 714      Table_Name           => "Prj.Projects");
 715    --  The set of all project files
 716
 717    type Put_Line_Access is access procedure
 718      (Line    : String;
 719       Project : Project_Id);
 720    --  Use to customize error reporting in Prj.Proc and Prj.Nmsc
 721
 722    procedure Expect (The_Token : Token_Type; Token_Image : String);
 723    --  Check that the current token is The_Token. If it is not, then
 724    --  output an error message.
 725
 726    procedure Initialize;
 727    --  This procedure must be called before using any services from the Prj
 728    --  hierarchy. Namet.Initialize must be called before Prj.Initialize.
 729
 730    procedure Reset;
 731    --  This procedure resets all the tables that are used when processing a
 732    --  project file tree. Initialize must be called before the call to Reset.
 733
 734    procedure Register_Default_Naming_Scheme
 735      (Language            : Name_Id;
 736       Default_Spec_Suffix : Name_Id;
 737       Default_Body_Suffix : Name_Id);
 738    --  Register the default suffixes for a given language. These extensions
 739    --  will be ignored if the user has specified a new naming scheme in a
 740    --  project file.
 741    --
 742    --  Otherwise, this information will be automatically added to Naming_Data
 743    --  when a project is processed, in the lists Spec_Suffix and Body_Suffix.
 744
 745    generic
 746       type State is limited private;
 747       with procedure Action
 748         (Project    : Project_Id;
 749          With_State : in out State);
 750    procedure For_Every_Project_Imported
 751      (By         : Project_Id;
 752       With_State : in out State);
 753    --  Call Action for each project imported directly or indirectly by project
 754    --  By. Action is called according to the order of importation: if A
 755    --  imports B, directly or indirectly, Action will be called for A before
 756    --  it is called for B. With_State may be used by Action to choose a
 757    --  behavior or to report some global result.
 758
 759 private
 760
 761    Initial_Buffer_Size : constant := 100;
 762    --  Initial size for extensible buffer used below
 763
 764    Buffer : String_Access := new String (1 .. Initial_Buffer_Size);
 765    --  An extensible character buffer to store names. Used in Prj.Part and
 766    --  Prj.Strt.
 767
 768    Buffer_Last : Natural := 0;
 769    --  The index of the last character in the Buffer
 770
 771    Current_Packages_To_Check : String_List_Access := All_Packages;
 772    --  Global variable, set by Prj.Part.Parse, used by Prj.Dect.
 773
 774    procedure Add_To_Buffer (S : String);
 775    --  Append a String to the Buffer
 776
 777 end Prj;