gcc/ada/prj-tree.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                              P R J . T R E E                             --
   6 --                                                                          --
   7 --                                 S p e c                                  --
   8 --                                                                          --
   9 --             Copyright (C) 2001-2005 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 --  This package defines the structure of the Project File tree
  28
  29 with GNAT.Dynamic_HTables;
  30 with GNAT.Dynamic_Tables;
  31
  32 with Prj.Attr; use Prj.Attr;
  33 with Types;    use Types;
  34
  35 package Prj.Tree is
  36
  37    type Project_Node_Tree_Data;
  38    type Project_Node_Tree_Ref is access all Project_Node_Tree_Data;
  39    --  Type to designate a project node tree, so that several project node
  40    --  trees can coexist in memory.
  41
  42    Project_Nodes_Initial   : constant := 1_000;
  43    Project_Nodes_Increment : constant := 100;
  44    --  Allocation parameters for initializing and extending number
  45    --  of nodes in table Tree_Private_Part.Project_Nodes
  46
  47    Project_Node_Low_Bound  : constant := 0;
  48    Project_Node_High_Bound : constant := 099_999_999;
  49    --  Range of values for project node id's (in practice infinite)
  50
  51    type Project_Node_Id is range
  52      Project_Node_Low_Bound .. Project_Node_High_Bound;
  53    --  The index of table Tree_Private_Part.Project_Nodes
  54
  55    Empty_Node : constant Project_Node_Id := Project_Node_Low_Bound;
  56    --  Designates no node in table Project_Nodes
  57
  58    First_Node_Id : constant Project_Node_Id := Project_Node_Low_Bound + 1;
  59
  60    subtype Variable_Node_Id is Project_Node_Id;
  61    --  Used to designate a node whose expected kind is one of
  62    --  N_Typed_Variable_Declaration, N_Variable_Declaration or
  63    --  N_Variable_Reference.
  64
  65    subtype Package_Declaration_Id is Project_Node_Id;
  66    --  Used to designate a node whose expected kind is N_Proect_Declaration
  67
  68    type Project_Node_Kind is
  69      (N_Project,
  70       N_With_Clause,
  71       N_Project_Declaration,
  72       N_Declarative_Item,
  73       N_Package_Declaration,
  74       N_String_Type_Declaration,
  75       N_Literal_String,
  76       N_Attribute_Declaration,
  77       N_Typed_Variable_Declaration,
  78       N_Variable_Declaration,
  79       N_Expression,
  80       N_Term,
  81       N_Literal_String_List,
  82       N_Variable_Reference,
  83       N_External_Value,
  84       N_Attribute_Reference,
  85       N_Case_Construction,
  86       N_Case_Item,
  87       N_Comment_Zones,
  88       N_Comment);
  89    --  Each node in the tree is of a Project_Node_Kind
  90    --  For the signification of the fields in each node of a
  91    --  Project_Node_Kind, look at package Tree_Private_Part.
  92
  93    procedure Initialize (Tree : Project_Node_Tree_Ref);
  94    --  Initialize the Project File tree: empty the Project_Nodes table
  95    --  and reset the Projects_Htable.
  96
  97    function Default_Project_Node
  98      (In_Tree       : Project_Node_Tree_Ref;
  99       Of_Kind       : Project_Node_Kind;
 100       And_Expr_Kind : Variable_Kind := Undefined) return Project_Node_Id;
 101    --  Returns a Project_Node_Record with the specified Kind and
 102    --  Expr_Kind; all the other components have default nil values.
 103
 104    function Hash (N : Project_Node_Id) return Header_Num;
 105    --  Used for hash tables where the key is a Project_Node_Id
 106
 107    function Imported_Or_Extended_Project_Of
 108      (Project   : Project_Node_Id;
 109       In_Tree   : Project_Node_Tree_Ref;
 110       With_Name : Name_Id) return Project_Node_Id;
 111    --  Return the node of a project imported or extended by project Project and
 112    --  whose name is With_Name. Return Empty_Node if there is no such project.
 113
 114    --------------
 115    -- Comments --
 116    --------------
 117
 118    type Comment_State is private;
 119    --  A type to store the values of several global variables related to
 120    --  comments.
 121
 122    procedure Save (S : out Comment_State);
 123    --  Save in variable S the comment state. Called before scanning a new
 124    --  project file.
 125
 126    procedure Restore (S : in Comment_State);
 127    --  Restore the comment state to a previously saved value. Called after
 128    --  scanning a project file.
 129
 130    procedure Reset_State;
 131    --  Set the comment state to its initial value. Called before scanning a
 132    --  new project file.
 133
 134    function There_Are_Unkept_Comments return Boolean;
 135    --  Indicates that some of the comments in a project file could not be
 136    --  stored in the parse tree.
 137
 138    procedure Set_Previous_Line_Node (To : Project_Node_Id);
 139    --  Indicate the node on the previous line. If there are comments
 140    --  immediately following this line, then they should be associated with
 141    --  this node.
 142
 143    procedure Set_Previous_End_Node (To : Project_Node_Id);
 144    --  Indicate that on the previous line the "end" belongs to node To.
 145    --  If there are comments immediately following this "end" line, they
 146    --  should be associated with this node.
 147
 148    procedure Set_End_Of_Line (To : Project_Node_Id);
 149    --  Indicate the node on the current line. If there is an end of line
 150    --  comment, then it should be associated with this node.
 151
 152    procedure Set_Next_End_Node (To : Project_Node_Id);
 153    --  Put node To on the top of the end node stack. When an "end" line
 154    --  is found with this node on the top of the end node stack, the comments,
 155    --  if any, immediately preceding this "end" line will be associated with
 156    --  this node.
 157
 158    procedure Remove_Next_End_Node;
 159    --  Remove the top of the end node stack
 160
 161    ------------------------
 162    -- Comment Processing --
 163    ------------------------
 164
 165    type Comment_Data is record
 166       Value                     : Name_Id := No_Name;
 167       Follows_Empty_Line        : Boolean := False;
 168       Is_Followed_By_Empty_Line : Boolean := False;
 169    end record;
 170
 171    package Comments is new Table.Table
 172      (Table_Component_Type => Comment_Data,
 173       Table_Index_Type     => Natural,
 174       Table_Low_Bound      => 1,
 175       Table_Initial        => 10,
 176       Table_Increment      => 100,
 177       Table_Name           => "Prj.Tree.Comments");
 178    --  A table to store the comments that may be stored is the tree
 179
 180    procedure Scan (In_Tree : Project_Node_Tree_Ref);
 181    --  Scan the tokens and accumulate comments
 182
 183    type Comment_Location is
 184      (Before, After, Before_End, After_End, End_Of_Line);
 185
 186    procedure Add_Comments
 187      (To      : Project_Node_Id;
 188       In_Tree : Project_Node_Tree_Ref;
 189       Where   : Comment_Location);
 190    --  Add comments to this node
 191
 192    ----------------------
 193    -- Access Functions --
 194    ----------------------
 195
 196    --  The following query functions are part of the abstract interface
 197    --  of the Project File tree
 198
 199    function Name_Of
 200      (Node    : Project_Node_Id;
 201       In_Tree : Project_Node_Tree_Ref) return Name_Id;
 202    pragma Inline (Name_Of);
 203    --  Valid for all non empty nodes. May return No_Name for nodes that have
 204    --  no names.
 205
 206    function Kind_Of
 207      (Node    : Project_Node_Id;
 208       In_Tree : Project_Node_Tree_Ref) return Project_Node_Kind;
 209    pragma Inline (Kind_Of);
 210    --  Valid for all non empty nodes
 211
 212    function Location_Of
 213      (Node    : Project_Node_Id;
 214       In_Tree : Project_Node_Tree_Ref) return Source_Ptr;
 215    pragma Inline (Location_Of);
 216    --  Valid for all non empty nodes
 217
 218    function First_Comment_After
 219      (Node    : Project_Node_Id;
 220       In_Tree : Project_Node_Tree_Ref) return Project_Node_Id;
 221    --  Valid only for N_Comment_Zones nodes
 222
 223    function First_Comment_After_End
 224      (Node    : Project_Node_Id;
 225       In_Tree : Project_Node_Tree_Ref) return Project_Node_Id;
 226    --  Valid only for N_Comment_Zones nodes
 227
 228    function First_Comment_Before
 229      (Node    : Project_Node_Id;
 230       In_Tree : Project_Node_Tree_Ref) return Project_Node_Id;
 231    --  Valid only for N_Comment_Zones nodes
 232
 233    function First_Comment_Before_End
 234      (Node    : Project_Node_Id;
 235       In_Tree : Project_Node_Tree_Ref) return Project_Node_Id;
 236    --  Valid only for N_Comment_Zones nodes
 237
 238    function Next_Comment
 239      (Node    : Project_Node_Id;
 240       In_Tree : Project_Node_Tree_Ref) return Project_Node_Id;
 241    --  Valid only for N_Comment nodes
 242
 243    function End_Of_Line_Comment
 244      (Node    : Project_Node_Id;
 245       In_Tree : Project_Node_Tree_Ref) return Name_Id;
 246    --  Valid only for non empty nodes
 247
 248    function Follows_Empty_Line
 249      (Node    : Project_Node_Id;
 250       In_Tree : Project_Node_Tree_Ref) return Boolean;
 251    --  Valid only for N_Comment nodes
 252
 253    function Is_Followed_By_Empty_Line
 254      (Node    : Project_Node_Id;
 255       In_Tree : Project_Node_Tree_Ref) return Boolean;
 256    --  Valid only for N_Comment nodes
 257
 258    function Project_File_Includes_Unkept_Comments
 259      (Node    : Project_Node_Id;
 260       In_Tree : Project_Node_Tree_Ref)
 261       return Boolean;
 262    --  Valid only for N_Project nodes
 263
 264    function Directory_Of
 265      (Node    : Project_Node_Id;
 266       In_Tree : Project_Node_Tree_Ref) return Name_Id;
 267    pragma Inline (Directory_Of);
 268    --  Only valid for N_Project nodes
 269
 270    function Expression_Kind_Of
 271      (Node    : Project_Node_Id;
 272       In_Tree : Project_Node_Tree_Ref) return Variable_Kind;
 273    pragma Inline (Expression_Kind_Of);
 274    --  Only valid for N_Literal_String, N_Attribute_Declaration,
 275    --  N_Variable_Declaration, N_Typed_Variable_Declaration, N_Expression,
 276    --  N_Term, N_Variable_Reference or N_Attribute_Reference nodes.
 277
 278    function Is_Extending_All
 279      (Node    : Project_Node_Id;
 280       In_Tree : Project_Node_Tree_Ref) return Boolean;
 281    pragma Inline (Is_Extending_All);
 282    --  Only valid for N_Project and N_With_Clause
 283
 284    function First_Variable_Of
 285      (Node    : Project_Node_Id;
 286       In_Tree : Project_Node_Tree_Ref) return Variable_Node_Id;
 287    pragma Inline (First_Variable_Of);
 288    --  Only valid for N_Project or N_Package_Declaration nodes
 289
 290    function First_Package_Of
 291      (Node    : Project_Node_Id;
 292       In_Tree : Project_Node_Tree_Ref) return Package_Declaration_Id;
 293    pragma Inline (First_Package_Of);
 294    --  Only valid for N_Project nodes
 295
 296    function Package_Id_Of
 297      (Node    : Project_Node_Id;
 298       In_Tree : Project_Node_Tree_Ref) return Package_Node_Id;
 299    pragma Inline (Package_Id_Of);
 300    --  Only valid for N_Package_Declaration nodes
 301
 302    function Path_Name_Of
 303      (Node    : Project_Node_Id;
 304       In_Tree : Project_Node_Tree_Ref) return Name_Id;
 305    pragma Inline (Path_Name_Of);
 306    --  Only valid for N_Project and N_With_Clause nodes
 307
 308    function String_Value_Of
 309      (Node    : Project_Node_Id;
 310       In_Tree : Project_Node_Tree_Ref) return Name_Id;
 311    pragma Inline (String_Value_Of);
 312    --  Only valid for N_With_Clause, N_Literal_String nodes or N_Comment
 313
 314    function Source_Index_Of
 315      (Node    : Project_Node_Id;
 316       In_Tree : Project_Node_Tree_Ref) return Int;
 317    pragma Inline (Source_Index_Of);
 318    --  Only valid for N_Literal_String and N_Attribute_Declaration nodes
 319
 320    function First_With_Clause_Of
 321      (Node    : Project_Node_Id;
 322       In_Tree : Project_Node_Tree_Ref) return Project_Node_Id;
 323    pragma Inline (First_With_Clause_Of);
 324    --  Only valid for N_Project nodes
 325
 326    function Project_Declaration_Of
 327      (Node    : Project_Node_Id;
 328       In_Tree : Project_Node_Tree_Ref) return Project_Node_Id;
 329    pragma Inline (Project_Declaration_Of);
 330    --  Only valid for N_Project nodes
 331
 332    function Extending_Project_Of
 333      (Node    : Project_Node_Id;
 334       In_Tree : Project_Node_Tree_Ref) return Project_Node_Id;
 335    pragma Inline (Extending_Project_Of);
 336    --  Only valid for N_Project_Declaration nodes
 337
 338    function First_String_Type_Of
 339      (Node    : Project_Node_Id;
 340       In_Tree : Project_Node_Tree_Ref) return Project_Node_Id;
 341    pragma Inline (First_String_Type_Of);
 342    --  Only valid for N_Project nodes
 343
 344    function Extended_Project_Path_Of
 345      (Node    : Project_Node_Id;
 346       In_Tree : Project_Node_Tree_Ref) return Name_Id;
 347    pragma Inline (Extended_Project_Path_Of);
 348    --  Only valid for N_With_Clause nodes
 349
 350    function Project_Node_Of
 351      (Node    : Project_Node_Id;
 352       In_Tree : Project_Node_Tree_Ref) return Project_Node_Id;
 353    pragma Inline (Project_Node_Of);
 354    --  Only valid for N_With_Clause, N_Variable_Reference and
 355    --  N_Attribute_Reference nodes.
 356
 357    function Non_Limited_Project_Node_Of
 358      (Node    : Project_Node_Id;
 359       In_Tree : Project_Node_Tree_Ref) return Project_Node_Id;
 360    pragma Inline (Non_Limited_Project_Node_Of);
 361    --  Only valid for N_With_Clause nodes. Returns Empty_Node for limited
 362    --  imported project files, otherwise returns the same result as
 363    --  Project_Node_Of.
 364
 365    function Next_With_Clause_Of
 366      (Node    : Project_Node_Id;
 367       In_Tree : Project_Node_Tree_Ref) return Project_Node_Id;
 368    pragma Inline (Next_With_Clause_Of);
 369    --  Only valid for N_With_Clause nodes
 370
 371    function First_Declarative_Item_Of
 372      (Node    : Project_Node_Id;
 373       In_Tree : Project_Node_Tree_Ref) return Project_Node_Id;
 374    pragma Inline (First_Declarative_Item_Of);
 375    --  Only valid for N_With_Clause nodes
 376
 377    function Extended_Project_Of
 378      (Node    : Project_Node_Id;
 379       In_Tree : Project_Node_Tree_Ref) return Project_Node_Id;
 380    pragma Inline (Extended_Project_Of);
 381    --  Only valid for N_Project_Declaration nodes
 382
 383    function Current_Item_Node
 384      (Node    : Project_Node_Id;
 385       In_Tree : Project_Node_Tree_Ref) return Project_Node_Id;
 386    pragma Inline (Current_Item_Node);
 387    --  Only valid for N_Declarative_Item nodes
 388
 389    function Next_Declarative_Item
 390      (Node    : Project_Node_Id;
 391       In_Tree : Project_Node_Tree_Ref) return Project_Node_Id;
 392    pragma Inline (Next_Declarative_Item);
 393    --  Only valid for N_Declarative_Item node
 394
 395    function Project_Of_Renamed_Package_Of
 396      (Node    : Project_Node_Id;
 397       In_Tree : Project_Node_Tree_Ref) return Project_Node_Id;
 398    pragma Inline (Project_Of_Renamed_Package_Of);
 399    --  Only valid for N_Package_Declaration nodes.
 400    --  May return Empty_Node.
 401
 402    function Next_Package_In_Project
 403      (Node    : Project_Node_Id;
 404       In_Tree : Project_Node_Tree_Ref) return Project_Node_Id;
 405    pragma Inline (Next_Package_In_Project);
 406    --  Only valid for N_Package_Declaration nodes
 407
 408    function First_Literal_String
 409      (Node    : Project_Node_Id;
 410       In_Tree : Project_Node_Tree_Ref) return Project_Node_Id;
 411    pragma Inline (First_Literal_String);
 412    --  Only valid for N_String_Type_Declaration nodes
 413
 414    function Next_String_Type
 415      (Node    : Project_Node_Id;
 416       In_Tree : Project_Node_Tree_Ref) return Project_Node_Id;
 417    pragma Inline (Next_String_Type);
 418    --  Only valid for N_String_Type_Declaration nodes
 419
 420    function Next_Literal_String
 421      (Node    : Project_Node_Id;
 422       In_Tree : Project_Node_Tree_Ref) return Project_Node_Id;
 423    pragma Inline (Next_Literal_String);
 424    --  Only valid for N_Literal_String nodes
 425
 426    function Expression_Of
 427      (Node    : Project_Node_Id;
 428       In_Tree : Project_Node_Tree_Ref) return Project_Node_Id;
 429    pragma Inline (Expression_Of);
 430    --  Only valid for N_Attribute_Declaration, N_Typed_Variable_Declaration
 431    --  or N_Variable_Declaration nodes
 432
 433    function Associative_Project_Of
 434      (Node    : Project_Node_Id;
 435       In_Tree : Project_Node_Tree_Ref)
 436       return  Project_Node_Id;
 437    pragma Inline (Associative_Project_Of);
 438    --  Only valid for N_Attribute_Declaration nodes
 439
 440    function Associative_Package_Of
 441      (Node    : Project_Node_Id;
 442       In_Tree : Project_Node_Tree_Ref)
 443       return  Project_Node_Id;
 444    pragma Inline (Associative_Package_Of);
 445    --  Only valid for N_Attribute_Declaration nodes
 446
 447    function Value_Is_Valid
 448      (For_Typed_Variable : Project_Node_Id;
 449       In_Tree            : Project_Node_Tree_Ref;
 450       Value              : Name_Id) return Boolean;
 451    pragma Inline (Value_Is_Valid);
 452    --  Only valid for N_Typed_Variable_Declaration. Returns True if Value is
 453    --  in the list of allowed strings for For_Typed_Variable. False otherwise.
 454
 455    function Associative_Array_Index_Of
 456      (Node    : Project_Node_Id;
 457       In_Tree : Project_Node_Tree_Ref) return Name_Id;
 458    pragma Inline (Associative_Array_Index_Of);
 459    --  Only valid for N_Attribute_Declaration and N_Attribute_Reference.
 460    --  Returns No_String for non associative array attributes.
 461
 462    function Next_Variable
 463      (Node    : Project_Node_Id;
 464       In_Tree : Project_Node_Tree_Ref) return Project_Node_Id;
 465    pragma Inline (Next_Variable);
 466    --  Only valid for N_Typed_Variable_Declaration or N_Variable_Declaration
 467    --  nodes.
 468
 469    function First_Term
 470      (Node    : Project_Node_Id;
 471       In_Tree : Project_Node_Tree_Ref) return Project_Node_Id;
 472    pragma Inline (First_Term);
 473    --  Only valid for N_Expression nodes
 474
 475    function Next_Expression_In_List
 476      (Node    : Project_Node_Id;
 477       In_Tree : Project_Node_Tree_Ref) return Project_Node_Id;
 478    pragma Inline (Next_Expression_In_List);
 479    --  Only valid for N_Expression nodes
 480
 481    function Current_Term
 482      (Node    : Project_Node_Id;
 483       In_Tree : Project_Node_Tree_Ref) return Project_Node_Id;
 484    pragma Inline (Current_Term);
 485    --  Only valid for N_Term nodes
 486
 487    function Next_Term
 488      (Node    : Project_Node_Id;
 489       In_Tree : Project_Node_Tree_Ref) return Project_Node_Id;
 490    pragma Inline (Next_Term);
 491    --  Only valid for N_Term nodes
 492
 493    function First_Expression_In_List
 494      (Node    : Project_Node_Id;
 495       In_Tree : Project_Node_Tree_Ref) return Project_Node_Id;
 496    pragma Inline (First_Expression_In_List);
 497    --  Only valid for N_Literal_String_List nodes
 498
 499    function Package_Node_Of
 500      (Node    : Project_Node_Id;
 501       In_Tree : Project_Node_Tree_Ref) return Project_Node_Id;
 502    pragma Inline (Package_Node_Of);
 503    --  Only valid for N_Variable_Reference or N_Attribute_Reference nodes.
 504    --  May return Empty_Node.
 505
 506    function String_Type_Of
 507      (Node    : Project_Node_Id;
 508       In_Tree : Project_Node_Tree_Ref) return Project_Node_Id;
 509    pragma Inline (String_Type_Of);
 510    --  Only valid for N_Variable_Reference or N_Typed_Variable_Declaration
 511    --  nodes.
 512
 513    function External_Reference_Of
 514      (Node    : Project_Node_Id;
 515       In_Tree : Project_Node_Tree_Ref) return Project_Node_Id;
 516    pragma Inline (External_Reference_Of);
 517    --  Only valid for N_External_Value nodes
 518
 519    function External_Default_Of
 520      (Node    : Project_Node_Id;
 521       In_Tree : Project_Node_Tree_Ref) return Project_Node_Id;
 522    pragma Inline (External_Default_Of);
 523    --  Only valid for N_External_Value nodes
 524
 525    function Case_Variable_Reference_Of
 526      (Node    : Project_Node_Id;
 527       In_Tree : Project_Node_Tree_Ref) return Project_Node_Id;
 528    pragma Inline (Case_Variable_Reference_Of);
 529    --  Only valid for N_Case_Construction nodes
 530
 531    function First_Case_Item_Of
 532      (Node    : Project_Node_Id;
 533       In_Tree : Project_Node_Tree_Ref) return Project_Node_Id;
 534    pragma Inline (First_Case_Item_Of);
 535    --  Only valid for N_Case_Construction nodes
 536
 537    function First_Choice_Of
 538      (Node    : Project_Node_Id;
 539       In_Tree : Project_Node_Tree_Ref) return Project_Node_Id;
 540    pragma Inline (First_Choice_Of);
 541    --  Return the first choice in a N_Case_Item, or Empty_Node if
 542    --  this is when others.
 543
 544    function Next_Case_Item
 545      (Node    : Project_Node_Id;
 546       In_Tree : Project_Node_Tree_Ref) return Project_Node_Id;
 547    pragma Inline (Next_Case_Item);
 548    --  Only valid for N_Case_Item nodes
 549
 550    function Case_Insensitive
 551      (Node    : Project_Node_Id;
 552       In_Tree : Project_Node_Tree_Ref) return Boolean;
 553    --  Only valid for N_Attribute_Declaration and N_Attribute_Reference nodes
 554
 555    --------------------
 556    -- Set Procedures --
 557    --------------------
 558
 559    --  The following procedures are part of the abstract interface of
 560    --  the Project File tree.
 561
 562    --  Each Set_* procedure is valid only for the same Project_Node_Kind
 563    --  nodes as the corresponding query function above.
 564
 565    procedure Set_Name_Of
 566      (Node    : Project_Node_Id;
 567       In_Tree : Project_Node_Tree_Ref;
 568       To      : Name_Id);
 569    pragma Inline (Set_Name_Of);
 570
 571    procedure Set_Kind_Of
 572      (Node    : Project_Node_Id;
 573       In_Tree : Project_Node_Tree_Ref;
 574       To      : Project_Node_Kind);
 575    pragma Inline (Set_Kind_Of);
 576
 577    procedure Set_Location_Of
 578      (Node    : Project_Node_Id;
 579       In_Tree : Project_Node_Tree_Ref;
 580       To      : Source_Ptr);
 581    pragma Inline (Set_Location_Of);
 582
 583    procedure Set_First_Comment_After
 584      (Node    : Project_Node_Id;
 585       In_Tree : Project_Node_Tree_Ref;
 586       To      : Project_Node_Id);
 587    pragma Inline (Set_First_Comment_After);
 588
 589    procedure Set_First_Comment_After_End
 590      (Node    : Project_Node_Id;
 591       In_Tree : Project_Node_Tree_Ref;
 592       To      : Project_Node_Id);
 593    pragma Inline (Set_First_Comment_After_End);
 594
 595    procedure Set_First_Comment_Before
 596      (Node    : Project_Node_Id;
 597       In_Tree : Project_Node_Tree_Ref;
 598       To      : Project_Node_Id);
 599    pragma Inline (Set_First_Comment_Before);
 600
 601    procedure Set_First_Comment_Before_End
 602      (Node    : Project_Node_Id;
 603       In_Tree : Project_Node_Tree_Ref;
 604       To      : Project_Node_Id);
 605    pragma Inline (Set_First_Comment_Before_End);
 606
 607    procedure Set_Next_Comment
 608      (Node    : Project_Node_Id;
 609       In_Tree : Project_Node_Tree_Ref;
 610       To      : Project_Node_Id);
 611    pragma Inline (Set_Next_Comment);
 612
 613    procedure Set_Project_File_Includes_Unkept_Comments
 614      (Node    : Project_Node_Id;
 615       In_Tree : Project_Node_Tree_Ref;
 616       To      : Boolean);
 617
 618    procedure Set_Directory_Of
 619      (Node    : Project_Node_Id;
 620       In_Tree : Project_Node_Tree_Ref;
 621       To      : Name_Id);
 622    pragma Inline (Set_Directory_Of);
 623
 624    procedure Set_Expression_Kind_Of
 625      (Node    : Project_Node_Id;
 626       In_Tree : Project_Node_Tree_Ref;
 627       To      : Variable_Kind);
 628    pragma Inline (Set_Expression_Kind_Of);
 629
 630    procedure Set_Is_Extending_All
 631      (Node    : Project_Node_Id;
 632       In_Tree : Project_Node_Tree_Ref);
 633    pragma Inline (Set_Is_Extending_All);
 634
 635    procedure Set_First_Variable_Of
 636      (Node    : Project_Node_Id;
 637       In_Tree : Project_Node_Tree_Ref;
 638       To      : Variable_Node_Id);
 639    pragma Inline (Set_First_Variable_Of);
 640
 641    procedure Set_First_Package_Of
 642      (Node    : Project_Node_Id;
 643       In_Tree : Project_Node_Tree_Ref;
 644       To      : Package_Declaration_Id);
 645    pragma Inline (Set_First_Package_Of);
 646
 647    procedure Set_Package_Id_Of
 648      (Node    : Project_Node_Id;
 649       In_Tree : Project_Node_Tree_Ref;
 650       To      : Package_Node_Id);
 651    pragma Inline (Set_Package_Id_Of);
 652
 653    procedure Set_Path_Name_Of
 654      (Node    : Project_Node_Id;
 655       In_Tree : Project_Node_Tree_Ref;
 656       To      : Name_Id);
 657    pragma Inline (Set_Path_Name_Of);
 658
 659    procedure Set_String_Value_Of
 660      (Node    : Project_Node_Id;
 661       In_Tree : Project_Node_Tree_Ref;
 662       To      : Name_Id);
 663    pragma Inline (Set_String_Value_Of);
 664
 665    procedure Set_First_With_Clause_Of
 666      (Node    : Project_Node_Id;
 667       In_Tree : Project_Node_Tree_Ref;
 668       To      : Project_Node_Id);
 669    pragma Inline (Set_First_With_Clause_Of);
 670
 671    procedure Set_Project_Declaration_Of
 672      (Node    : Project_Node_Id;
 673       In_Tree : Project_Node_Tree_Ref;
 674       To      : Project_Node_Id);
 675    pragma Inline (Set_Project_Declaration_Of);
 676
 677    procedure Set_Extending_Project_Of
 678      (Node    : Project_Node_Id;
 679       In_Tree : Project_Node_Tree_Ref;
 680       To      : Project_Node_Id);
 681    pragma Inline (Set_Extending_Project_Of);
 682
 683    procedure Set_First_String_Type_Of
 684      (Node    : Project_Node_Id;
 685       In_Tree : Project_Node_Tree_Ref;
 686       To      : Project_Node_Id);
 687    pragma Inline (Set_First_String_Type_Of);
 688
 689    procedure Set_Extended_Project_Path_Of
 690      (Node    : Project_Node_Id;
 691       In_Tree : Project_Node_Tree_Ref;
 692       To      : Name_Id);
 693    pragma Inline (Set_Extended_Project_Path_Of);
 694
 695    procedure Set_Project_Node_Of
 696      (Node         : Project_Node_Id;
 697       In_Tree      : Project_Node_Tree_Ref;
 698       To           : Project_Node_Id;
 699       Limited_With : Boolean := False);
 700    pragma Inline (Set_Project_Node_Of);
 701
 702    procedure Set_Next_With_Clause_Of
 703      (Node    : Project_Node_Id;
 704       In_Tree : Project_Node_Tree_Ref;
 705       To      : Project_Node_Id);
 706    pragma Inline (Set_Next_With_Clause_Of);
 707
 708    procedure Set_First_Declarative_Item_Of
 709      (Node    : Project_Node_Id;
 710       In_Tree : Project_Node_Tree_Ref;
 711       To      : Project_Node_Id);
 712    pragma Inline (Set_First_Declarative_Item_Of);
 713
 714    procedure Set_Extended_Project_Of
 715      (Node    : Project_Node_Id;
 716       In_Tree : Project_Node_Tree_Ref;
 717       To      : Project_Node_Id);
 718    pragma Inline (Set_Extended_Project_Of);
 719
 720    procedure Set_Current_Item_Node
 721      (Node    : Project_Node_Id;
 722       In_Tree : Project_Node_Tree_Ref;
 723       To      : Project_Node_Id);
 724    pragma Inline (Set_Current_Item_Node);
 725
 726    procedure Set_Next_Declarative_Item
 727      (Node    : Project_Node_Id;
 728       In_Tree : Project_Node_Tree_Ref;
 729       To      : Project_Node_Id);
 730    pragma Inline (Set_Next_Declarative_Item);
 731
 732    procedure Set_Project_Of_Renamed_Package_Of
 733      (Node    : Project_Node_Id;
 734       In_Tree : Project_Node_Tree_Ref;
 735       To      : Project_Node_Id);
 736    pragma Inline (Set_Project_Of_Renamed_Package_Of);
 737
 738    procedure Set_Next_Package_In_Project
 739      (Node    : Project_Node_Id;
 740       In_Tree : Project_Node_Tree_Ref;
 741       To      : Project_Node_Id);
 742    pragma Inline (Set_Next_Package_In_Project);
 743
 744    procedure Set_First_Literal_String
 745      (Node    : Project_Node_Id;
 746       In_Tree : Project_Node_Tree_Ref;
 747       To      : Project_Node_Id);
 748    pragma Inline (Set_First_Literal_String);
 749
 750    procedure Set_Next_String_Type
 751      (Node    : Project_Node_Id;
 752       In_Tree : Project_Node_Tree_Ref;
 753       To      : Project_Node_Id);
 754    pragma Inline (Set_Next_String_Type);
 755
 756    procedure Set_Next_Literal_String
 757      (Node    : Project_Node_Id;
 758       In_Tree : Project_Node_Tree_Ref;
 759       To      : Project_Node_Id);
 760    pragma Inline (Set_Next_Literal_String);
 761
 762    procedure Set_Expression_Of
 763      (Node    : Project_Node_Id;
 764       In_Tree : Project_Node_Tree_Ref;
 765       To      : Project_Node_Id);
 766    pragma Inline (Set_Expression_Of);
 767
 768    procedure Set_Associative_Project_Of
 769      (Node    : Project_Node_Id;
 770       In_Tree : Project_Node_Tree_Ref;
 771       To      : Project_Node_Id);
 772    pragma Inline (Set_Associative_Project_Of);
 773
 774    procedure Set_Associative_Package_Of
 775      (Node    : Project_Node_Id;
 776       In_Tree : Project_Node_Tree_Ref;
 777       To      : Project_Node_Id);
 778    pragma Inline (Set_Associative_Package_Of);
 779
 780    procedure Set_Associative_Array_Index_Of
 781      (Node    : Project_Node_Id;
 782       In_Tree : Project_Node_Tree_Ref;
 783       To      : Name_Id);
 784    pragma Inline (Set_Associative_Array_Index_Of);
 785
 786    procedure Set_Next_Variable
 787      (Node    : Project_Node_Id;
 788       In_Tree : Project_Node_Tree_Ref;
 789       To      : Project_Node_Id);
 790    pragma Inline (Set_Next_Variable);
 791
 792    procedure Set_First_Term
 793      (Node    : Project_Node_Id;
 794       In_Tree : Project_Node_Tree_Ref;
 795       To      : Project_Node_Id);
 796    pragma Inline (Set_First_Term);
 797
 798    procedure Set_Next_Expression_In_List
 799      (Node    : Project_Node_Id;
 800       In_Tree : Project_Node_Tree_Ref;
 801       To      : Project_Node_Id);
 802    pragma Inline (Set_Next_Expression_In_List);
 803
 804    procedure Set_Current_Term
 805      (Node    : Project_Node_Id;
 806       In_Tree : Project_Node_Tree_Ref;
 807       To      : Project_Node_Id);
 808    pragma Inline (Set_Current_Term);
 809
 810    procedure Set_Next_Term
 811      (Node    : Project_Node_Id;
 812       In_Tree : Project_Node_Tree_Ref;
 813       To      : Project_Node_Id);
 814    pragma Inline (Set_Next_Term);
 815
 816    procedure Set_First_Expression_In_List
 817      (Node    : Project_Node_Id;
 818       In_Tree : Project_Node_Tree_Ref;
 819       To      : Project_Node_Id);
 820    pragma Inline (Set_First_Expression_In_List);
 821
 822    procedure Set_Package_Node_Of
 823      (Node    : Project_Node_Id;
 824       In_Tree : Project_Node_Tree_Ref;
 825       To      : Project_Node_Id);
 826    pragma Inline (Set_Package_Node_Of);
 827
 828    procedure Set_Source_Index_Of
 829      (Node    : Project_Node_Id;
 830       In_Tree : Project_Node_Tree_Ref;
 831       To      : Int);
 832    pragma Inline (Set_Source_Index_Of);
 833
 834    procedure Set_String_Type_Of
 835      (Node    : Project_Node_Id;
 836       In_Tree : Project_Node_Tree_Ref;
 837       To      : Project_Node_Id);
 838    pragma Inline (Set_String_Type_Of);
 839
 840    procedure Set_External_Reference_Of
 841      (Node    : Project_Node_Id;
 842       In_Tree : Project_Node_Tree_Ref;
 843       To      : Project_Node_Id);
 844    pragma Inline (Set_External_Reference_Of);
 845
 846    procedure Set_External_Default_Of
 847      (Node    : Project_Node_Id;
 848       In_Tree : Project_Node_Tree_Ref;
 849       To      : Project_Node_Id);
 850    pragma Inline (Set_External_Default_Of);
 851
 852    procedure Set_Case_Variable_Reference_Of
 853      (Node    : Project_Node_Id;
 854       In_Tree : Project_Node_Tree_Ref;
 855       To      : Project_Node_Id);
 856    pragma Inline (Set_Case_Variable_Reference_Of);
 857
 858    procedure Set_First_Case_Item_Of
 859      (Node    : Project_Node_Id;
 860       In_Tree : Project_Node_Tree_Ref;
 861       To      : Project_Node_Id);
 862    pragma Inline (Set_First_Case_Item_Of);
 863
 864    procedure Set_First_Choice_Of
 865      (Node    : Project_Node_Id;
 866       In_Tree : Project_Node_Tree_Ref;
 867       To      : Project_Node_Id);
 868    pragma Inline (Set_First_Choice_Of);
 869
 870    procedure Set_Next_Case_Item
 871      (Node    : Project_Node_Id;
 872       In_Tree : Project_Node_Tree_Ref;
 873       To      : Project_Node_Id);
 874    pragma Inline (Set_Next_Case_Item);
 875
 876    procedure Set_Case_Insensitive
 877      (Node    : Project_Node_Id;
 878       In_Tree : Project_Node_Tree_Ref;
 879       To      : Boolean);
 880
 881    -------------------------------
 882    -- Restricted Access Section --
 883    -------------------------------
 884
 885    package Tree_Private_Part is
 886
 887       --  This is conceptually in the private part.
 888       --  However, for efficiency, some packages are accessing it directly.
 889
 890       type Project_Node_Record is record
 891
 892          Kind : Project_Node_Kind;
 893
 894          Location : Source_Ptr := No_Location;
 895
 896          Directory : Name_Id       := No_Name;
 897          --  Only for N_Project
 898
 899          Expr_Kind : Variable_Kind := Undefined;
 900          --  See below for what Project_Node_Kind it is used
 901
 902          Variables : Variable_Node_Id := Empty_Node;
 903          --  First variable in a project or a package
 904
 905          Packages : Package_Declaration_Id := Empty_Node;
 906          --  First package declaration in a project
 907
 908          Pkg_Id : Package_Node_Id := Empty_Package;
 909          --  Only used for N_Package_Declaration
 910          --  The component Pkg_Id is an entry into the table Package_Attributes
 911          --  (in Prj.Attr). It is used to indicate all the attributes of the
 912          --  package with their characteristics.
 913          --
 914          --  The tables Prj.Attr.Attributes and Prj.Attr.Package_Attributes
 915          --  are built once and for all through a call (from Prj.Initialize)
 916          --  to procedure Prj.Attr.Initialize. It is never modified after that.
 917
 918          Name : Name_Id := No_Name;
 919          --  See below for what Project_Node_Kind it is used
 920
 921          Src_Index : Int := 0;
 922          --  Index of a unit in a multi-unit source.
 923          --  Onli for some N_Attribute_Declaration and N_Literal_String.
 924
 925          Path_Name : Name_Id := No_Name;
 926          --  See below for what Project_Node_Kind it is used
 927
 928          Value : Name_Id := No_Name;
 929          --  See below for what Project_Node_Kind it is used
 930
 931          Field1 : Project_Node_Id := Empty_Node;
 932          --  See below the meaning for each Project_Node_Kind
 933
 934          Field2 : Project_Node_Id := Empty_Node;
 935          --  See below the meaning for each Project_Node_Kind
 936
 937          Field3 : Project_Node_Id := Empty_Node;
 938          --  See below the meaning for each Project_Node_Kind
 939
 940          Flag1 : Boolean := False;
 941          --  This flag is significant only for:
 942          --    N_Attribute_Declaration and N_Atribute_Reference
 943          --      It indicates for an associative array attribute, that the
 944          --      index is case insensitive.
 945          --    N_Comment - it indicates that the comment is preceded by an
 946          --                empty line.
 947          --    N_Project - it indicates that there are comments in the project
 948          --                source that cannot be kept in the tree.
 949          --    N_Project_Declaration
 950          --              - it indicates that there are unkept comments in the
 951          --                project.
 952
 953          Flag2 : Boolean := False;
 954          --  This flag is significant only for:
 955          --    N_Project - it indicates that the project "extends all" another
 956          --                project.
 957          --    N_Comment - it indicates that the comment is followed by an
 958          --                empty line.
 959          --    N_With_Clause
 960          --              - it indicates that the originally imported project
 961          --                is an extending all project.
 962
 963          Comments : Project_Node_Id := Empty_Node;
 964          --  For nodes other that N_Comment_Zones or N_Comment, designates the
 965          --  comment zones associated with the node.
 966          --  for N_Comment_Zones, designates the comment after the "end" of
 967          --  the construct.
 968          --  For N_Comment, designates the next comment, if any.
 969
 970       end record;
 971
 972       --  type Project_Node_Kind is
 973
 974       --   (N_Project,
 975       --    --  Name:      project name
 976       --    --  Path_Name: project path name
 977       --    --  Expr_Kind: Undefined
 978       --    --  Field1:    first with clause
 979       --    --  Field2:    project declaration
 980       --    --  Field3:    first string type
 981       --    --  Value:     extended project path name (if any)
 982
 983       --    N_With_Clause,
 984       --    --  Name:      imported project name
 985       --    --  Path_Name: imported project path name
 986       --    --  Expr_Kind: Undefined
 987       --    --  Field1:    project node
 988       --    --  Field2:    next with clause
 989       --    --  Field3:    project node or empty if "limited with"
 990       --    --  Value:     literal string withed
 991
 992       --    N_Project_Declaration,
 993       --    --  Name:      not used
 994       --    --  Path_Name: not used
 995       --    --  Expr_Kind: Undefined
 996       --    --  Field1:    first declarative item
 997       --    --  Field2:    extended project
 998       --    --  Field3:    extending project
 999       --    --  Value:     not used
1000
1001       --    N_Declarative_Item,
1002       --    --  Name:      not used
1003       --    --  Path_Name: not used
1004       --    --  Expr_Kind: Undefined
1005       --    --  Field1:    current item node
1006       --    --  Field2:    next declarative item
1007       --    --  Field3:    not used
1008       --    --  Value:     not used
1009
1010       --    N_Package_Declaration,
1011       --    --  Name:      package name
1012       --    --  Path_Name: not used
1013       --    --  Expr_Kind: Undefined
1014       --    --  Field1:    project of renamed package (if any)
1015       --    --  Field2:    first declarative item
1016       --    --  Field3:    next package in project
1017       --    --  Value:     not used
1018
1019       --    N_String_Type_Declaration,
1020       --    --  Name:      type name
1021       --    --  Path_Name: not used
1022       --    --  Expr_Kind: Undefined
1023       --    --  Field1:    first literal string
1024       --    --  Field2:    next string type
1025       --    --  Field3:    not used
1026       --    --  Value:     not used
1027
1028       --    N_Literal_String,
1029       --    --  Name:      not used
1030       --    --  Path_Name: not used
1031       --    --  Expr_Kind: Single
1032       --    --  Field1:    next literal string
1033       --    --  Field2:    not used
1034       --    --  Field3:    not used
1035       --    --  Value:     string value
1036
1037       --    N_Attribute_Declaration,
1038       --    --  Name:      attribute name
1039       --    --  Path_Name: not used
1040       --    --  Expr_Kind: attribute kind
1041       --    --  Field1:    expression
1042       --    --  Field2:    project of full associative array
1043       --    --  Field3:    package of full associative array
1044       --    --  Value:     associative array index
1045       --    --             (if an associative array element)
1046
1047       --    N_Typed_Variable_Declaration,
1048       --    --  Name:      variable name
1049       --    --  Path_Name: not used
1050       --    --  Expr_Kind: Single
1051       --    --  Field1:    expression
1052       --    --  Field2:    type of variable (N_String_Type_Declaration)
1053       --    --  Field3:    next variable
1054       --    --  Value:     not used
1055
1056       --    N_Variable_Declaration,
1057       --    --  Name:      variable name
1058       --    --  Path_Name: not used
1059       --    --  Expr_Kind: variable kind
1060       --    --  Field1:    expression
1061       --    --  Field2:    not used
1062       --    --             Field3 is used for next variable, instead of Field2,
1063       --    --             so that it is the same field for
1064       --    --             N_Variable_Declaration and
1065       --    --             N_Typed_Variable_Declaration
1066       --    --  Field3:    next variable
1067       --    --  Value:     not used
1068
1069       --    N_Expression,
1070       --    --  Name:      not used
1071       --    --  Path_Name: not used
1072       --    --  Expr_Kind: expression kind
1073       --    --  Field1:    first term
1074       --    --  Field2:    next expression in list
1075       --    --  Field3:    not used
1076       --    --  Value:     not used
1077
1078       --    N_Term,
1079       --    --  Name:      not used
1080       --    --  Path_Name: not used
1081       --    --  Expr_Kind: term kind
1082       --    --  Field1:    current term
1083       --    --  Field2:    next term in the expression
1084       --    --  Field3:    not used
1085       --    --  Value:     not used
1086
1087       --    N_Literal_String_List,
1088       --    --  Designates a list of string expressions between brackets
1089       --    --  separated by commas. The string expressions are not necessarily
1090       --    --  literal strings.
1091       --    --  Name:      not used
1092       --    --  Path_Name: not used
1093       --    --  Expr_Kind: List
1094       --    --  Field1:    first expression
1095       --    --  Field2:    not used
1096       --    --  Field3:    not used
1097       --    --  Value:     not used
1098
1099       --    N_Variable_Reference,
1100       --    --  Name:      variable name
1101       --    --  Path_Name: not used
1102       --    --  Expr_Kind: variable kind
1103       --    --  Field1:    project (if specified)
1104       --    --  Field2:    package (if specified)
1105       --    --  Field3:    type of variable (N_String_Type_Declaration), if any
1106       --    --  Value:     not used
1107
1108       --    N_External_Value,
1109       --    --  Name:      not used
1110       --    --  Path_Name: not used
1111       --    --  Expr_Kind: Single
1112       --    --  Field1:    Name of the external reference (literal string)
1113       --    --  Field2:    Default (literal string)
1114       --    --  Field3:    not used
1115       --    --  Value:     not used
1116
1117       --    N_Attribute_Reference,
1118       --    --  Name:      attribute name
1119       --    --  Path_Name: not used
1120       --    --  Expr_Kind: attribute kind
1121       --    --  Field1:    project
1122       --    --  Field2:    package (if attribute of a package)
1123       --    --  Field3:    not used
1124       --    --  Value:     associative array index
1125       --    --             (if an associative array element)
1126
1127       --    N_Case_Construction,
1128       --    --  Name:      not used
1129       --    --  Path_Name: not used
1130       --    --  Expr_Kind: Undefined
1131       --    --  Field1:    case variable reference
1132       --    --  Field2:    first case item
1133       --    --  Field3:    not used
1134       --    --  Value:     not used
1135
1136       --    N_Case_Item
1137       --    --  Name:      not used
1138       --    --  Path_Name: not used
1139       --    --  Expr_Kind: not used
1140       --    --  Field1:    first choice (literal string), or Empty_Node
1141       --    --             for when others
1142       --    --  Field2:    first declarative item
1143       --    --  Field3:    next case item
1144       --    --  Value:     not used
1145
1146       --    N_Comment_zones
1147       --    --  Name:      not used
1148       --    --  Path_Name: not used
1149       --    --  Expr_Kind: not used
1150       --    --  Field1:    comment before the construct
1151       --    --  Field2:    comment after the construct
1152       --    --  Field3:    comment before the "end" of the construct
1153       --    --  Value:     end of line comment
1154       --    --  Comments:  comment after the "end" of the construct
1155
1156       --    N_Comment
1157       --    --  Name:      not used
1158       --    --  Path_Name: not used
1159       --    --  Expr_Kind: not used
1160       --    --  Field1:    not used
1161       --    --  Field2:    not used
1162       --    --  Field3:    not used
1163       --    --  Value:     comment
1164       --    --  Flag1:     comment is preceded by an empty line
1165       --    --  Flag2:     comment is followed by an empty line
1166       --    --  Comments:  next comment
1167
1168       package Project_Node_Table is
1169         new GNAT.Dynamic_Tables
1170           (Table_Component_Type => Project_Node_Record,
1171            Table_Index_Type     => Project_Node_Id,
1172            Table_Low_Bound      => First_Node_Id,
1173            Table_Initial        => Project_Nodes_Initial,
1174            Table_Increment      => Project_Nodes_Increment);
1175       --  This table contains the syntactic tree of project data
1176       --  from project files.
1177
1178       type Project_Name_And_Node is record
1179          Name : Name_Id;
1180          --  Name of the project
1181
1182          Node : Project_Node_Id;
1183          --  Node of the project in table Project_Nodes
1184
1185          Canonical_Path : Name_Id;
1186          --  Resolved and canonical path of the project file
1187
1188          Extended : Boolean;
1189          --  True when the project is being extended by another project
1190       end record;
1191
1192       No_Project_Name_And_Node : constant Project_Name_And_Node :=
1193         (Name           => No_Name,
1194          Node           => Empty_Node,
1195          Canonical_Path => No_Name,
1196          Extended       => True);
1197
1198       package Projects_Htable is new GNAT.Dynamic_HTables.Simple_HTable
1199         (Header_Num => Header_Num,
1200          Element    => Project_Name_And_Node,
1201          No_Element => No_Project_Name_And_Node,
1202          Key        => Name_Id,
1203          Hash       => Hash,
1204          Equal      => "=");
1205       --  This hash table contains a mapping of project names to project nodes.
1206       --  Note that this hash table contains only the nodes whose Kind is
1207       --  N_Project. It is used to find the node of a project from its
1208       --  name, and to verify if a project has already been parsed, knowing
1209       --  its name.
1210
1211    end Tree_Private_Part;
1212
1213    type Project_Node_Tree_Data is record
1214       Project_Nodes : Tree_Private_Part.Project_Node_Table.Instance;
1215       Projects_HT   : Tree_Private_Part.Projects_Htable.Instance;
1216    end record;
1217    --  The data for a project node tree
1218
1219 private
1220    type Comment_Array is array (Positive range <>) of Comment_Data;
1221    type Comments_Ptr is access Comment_Array;
1222
1223    type Comment_State is record
1224       End_Of_Line_Node   : Project_Node_Id := Empty_Node;
1225
1226       Previous_Line_Node : Project_Node_Id := Empty_Node;
1227
1228       Previous_End_Node  : Project_Node_Id := Empty_Node;
1229
1230       Unkept_Comments    : Boolean := False;
1231
1232       Comments           : Comments_Ptr := null;
1233    end record;
1234
1235 end Prj.Tree;