gcc/ada/prj.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                                  P R J                                   --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   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 with Ada.Characters.Handling; use Ada.Characters.Handling;
  28
  29 with Namet;    use Namet;
  30 with Osint;    use Osint;
  31 with Prj.Attr;
  32 with Prj.Com;
  33 with Prj.Env;
  34 with Prj.Err;  use Prj.Err;
  35 with Scans;    use Scans;
  36 with Snames;   use Snames;
  37
  38 with GNAT.OS_Lib; use GNAT.OS_Lib;
  39
  40 package body Prj is
  41
  42    The_Empty_String : Name_Id;
  43
  44    Ada_Language     : constant Name_Id := Name_Ada;
  45
  46    subtype Known_Casing is Casing_Type range All_Upper_Case .. Mixed_Case;
  47
  48    The_Casing_Images : constant array (Known_Casing) of String_Access :=
  49      (All_Lower_Case => new String'("lowercase"),
  50       All_Upper_Case => new String'("UPPERCASE"),
  51       Mixed_Case     => new String'("MixedCase"));
  52
  53    Initialized : Boolean := False;
  54
  55    Standard_Dot_Replacement      : constant Name_Id :=
  56      First_Name_Id + Character'Pos ('-');
  57
  58    Std_Naming_Data : Naming_Data :=
  59      (Current_Language          => No_Name,
  60       Dot_Replacement           => Standard_Dot_Replacement,
  61       Dot_Repl_Loc              => No_Location,
  62       Casing                    => All_Lower_Case,
  63       Spec_Suffix               => No_Array_Element,
  64       Current_Spec_Suffix       => No_Name,
  65       Spec_Suffix_Loc           => No_Location,
  66       Body_Suffix               => No_Array_Element,
  67       Current_Body_Suffix       => No_Name,
  68       Body_Suffix_Loc           => No_Location,
  69       Separate_Suffix           => No_Name,
  70       Sep_Suffix_Loc            => No_Location,
  71       Specs                     => No_Array_Element,
  72       Bodies                    => No_Array_Element,
  73       Specification_Exceptions  => No_Array_Element,
  74       Implementation_Exceptions => No_Array_Element);
  75
  76    Project_Empty : constant Project_Data :=
  77      (First_Referred_By              => No_Project,
  78       Name                           => No_Name,
  79       Path_Name                      => No_Name,
  80       Virtual                        => False,
  81       Display_Path_Name              => No_Name,
  82       Location                       => No_Location,
  83       Mains                          => Nil_String,
  84       Directory                      => No_Name,
  85       Display_Directory              => No_Name,
  86       Dir_Path                       => null,
  87       Library                        => False,
  88       Library_Dir                    => No_Name,
  89       Display_Library_Dir            => No_Name,
  90       Library_Src_Dir                => No_Name,
  91       Display_Library_Src_Dir        => No_Name,
  92       Library_Name                   => No_Name,
  93       Library_Kind                   => Static,
  94       Lib_Internal_Name              => No_Name,
  95       Lib_Elaboration                => False,
  96       Standalone_Library             => False,
  97       Lib_Interface_ALIs             => Nil_String,
  98       Lib_Auto_Init                  => False,
  99       Symbol_Data                    => No_Symbols,
 100       Sources_Present                => True,
 101       Sources                        => Nil_String,
 102       Source_Dirs                    => Nil_String,
 103       Known_Order_Of_Source_Dirs     => True,
 104       Object_Directory               => No_Name,
 105       Display_Object_Dir             => No_Name,
 106       Exec_Directory                 => No_Name,
 107       Display_Exec_Dir               => No_Name,
 108       Extends                        => No_Project,
 109       Extended_By                    => No_Project,
 110       Naming                         => Std_Naming_Data,
 111       Decl                           => No_Declarations,
 112       Imported_Projects              => Empty_Project_List,
 113       Ada_Include_Path               => null,
 114       Ada_Objects_Path               => null,
 115       Include_Path_File              => No_Name,
 116       Objects_Path_File_With_Libs    => No_Name,
 117       Objects_Path_File_Without_Libs => No_Name,
 118       Config_File_Name               => No_Name,
 119       Config_File_Temp               => False,
 120       Config_Checked                 => False,
 121       Language_Independent_Checked   => False,
 122       Checked                        => False,
 123       Seen                           => False,
 124       Flag1                          => False,
 125       Flag2                          => False,
 126       Depth                          => 0,
 127       Unkept_Comments                => False);
 128
 129    -------------------
 130    -- Add_To_Buffer --
 131    -------------------
 132
 133    procedure Add_To_Buffer (S : String) is
 134    begin
 135       --  If Buffer is too small, double its size
 136
 137       if Buffer_Last + S'Length > Buffer'Last then
 138          declare
 139             New_Buffer : constant  String_Access :=
 140                            new String (1 .. 2 * Buffer'Last);
 141
 142          begin
 143             New_Buffer (1 .. Buffer_Last) := Buffer (1 .. Buffer_Last);
 144             Free (Buffer);
 145             Buffer := New_Buffer;
 146          end;
 147       end if;
 148
 149       Buffer (Buffer_Last + 1 .. Buffer_Last + S'Length) := S;
 150       Buffer_Last := Buffer_Last + S'Length;
 151    end Add_To_Buffer;
 152
 153    -------------------
 154    -- Empty_Project --
 155    -------------------
 156
 157    function Empty_Project return Project_Data is
 158    begin
 159       Initialize;
 160       return Project_Empty;
 161    end Empty_Project;
 162
 163    ------------------
 164    -- Empty_String --
 165    ------------------
 166
 167    function Empty_String return Name_Id is
 168    begin
 169       return The_Empty_String;
 170    end Empty_String;
 171
 172    ------------
 173    -- Expect --
 174    ------------
 175
 176    procedure Expect (The_Token : Token_Type; Token_Image : String) is
 177    begin
 178       if Token /= The_Token then
 179          Error_Msg (Token_Image & " expected", Token_Ptr);
 180       end if;
 181    end Expect;
 182
 183    --------------------------------
 184    -- For_Every_Project_Imported --
 185    --------------------------------
 186
 187    procedure For_Every_Project_Imported
 188      (By         : Project_Id;
 189       With_State : in out State)
 190    is
 191
 192       procedure Check (Project : Project_Id);
 193       --  Check if a project has already been seen.
 194       --  If not seen, mark it as seen, call Action,
 195       --  and check all its imported projects.
 196
 197       procedure Check (Project : Project_Id) is
 198          List : Project_List;
 199
 200       begin
 201          if not Projects.Table (Project).Seen then
 202             Projects.Table (Project).Seen := True;
 203             Action (Project, With_State);
 204
 205             List := Projects.Table (Project).Imported_Projects;
 206             while List /= Empty_Project_List loop
 207                Check (Project_Lists.Table (List).Project);
 208                List := Project_Lists.Table (List).Next;
 209             end loop;
 210          end if;
 211       end Check;
 212
 213    begin
 214       for Project in Projects.First .. Projects.Last loop
 215          Projects.Table (Project).Seen := False;
 216       end loop;
 217
 218       Check (Project => By);
 219    end For_Every_Project_Imported;
 220
 221    -----------
 222    -- Image --
 223    -----------
 224
 225    function Image (Casing : Casing_Type) return String is
 226    begin
 227       return The_Casing_Images (Casing).all;
 228    end Image;
 229
 230    ----------------
 231    -- Initialize --
 232    ----------------
 233
 234    procedure Initialize is
 235    begin
 236       if not Initialized then
 237          Initialized := True;
 238          Name_Len := 0;
 239          The_Empty_String := Name_Find;
 240          Empty_Name := The_Empty_String;
 241          Name_Len := 4;
 242          Name_Buffer (1 .. 4) := ".ads";
 243          Default_Ada_Spec_Suffix := Name_Find;
 244          Name_Len := 4;
 245          Name_Buffer (1 .. 4) := ".adb";
 246          Default_Ada_Body_Suffix := Name_Find;
 247          Name_Len := 1;
 248          Name_Buffer (1) := '/';
 249          Slash := Name_Find;
 250          Std_Naming_Data.Current_Spec_Suffix := Default_Ada_Spec_Suffix;
 251          Std_Naming_Data.Current_Body_Suffix := Default_Ada_Body_Suffix;
 252          Std_Naming_Data.Separate_Suffix     := Default_Ada_Body_Suffix;
 253          Register_Default_Naming_Scheme
 254            (Language            => Ada_Language,
 255             Default_Spec_Suffix => Default_Ada_Spec_Suffix,
 256             Default_Body_Suffix => Default_Ada_Body_Suffix);
 257          Prj.Env.Initialize;
 258          Prj.Attr.Initialize;
 259          Set_Name_Table_Byte (Name_Project,  Token_Type'Pos (Tok_Project));
 260          Set_Name_Table_Byte (Name_Extends,  Token_Type'Pos (Tok_Extends));
 261          Set_Name_Table_Byte (Name_External, Token_Type'Pos (Tok_External));
 262       end if;
 263    end Initialize;
 264
 265    ------------------------------------
 266    -- Register_Default_Naming_Scheme --
 267    ------------------------------------
 268
 269    procedure Register_Default_Naming_Scheme
 270      (Language            : Name_Id;
 271       Default_Spec_Suffix : Name_Id;
 272       Default_Body_Suffix : Name_Id)
 273    is
 274       Lang : Name_Id;
 275       Suffix : Array_Element_Id;
 276       Found : Boolean := False;
 277       Element : Array_Element;
 278
 279    begin
 280       --  Get the language name in small letters
 281
 282       Get_Name_String (Language);
 283       Name_Buffer (1 .. Name_Len) := To_Lower (Name_Buffer (1 .. Name_Len));
 284       Lang := Name_Find;
 285
 286       Suffix := Std_Naming_Data.Spec_Suffix;
 287       Found := False;
 288
 289       --  Look for an element of the spec sufix array indexed by the language
 290       --  name. If one is found, put the default value.
 291
 292       while Suffix /= No_Array_Element and then not Found loop
 293          Element := Array_Elements.Table (Suffix);
 294
 295          if Element.Index = Lang then
 296             Found := True;
 297             Element.Value.Value := Default_Spec_Suffix;
 298             Array_Elements.Table (Suffix) := Element;
 299
 300          else
 301             Suffix := Element.Next;
 302          end if;
 303       end loop;
 304
 305       --  If none can be found, create a new one.
 306
 307       if not Found then
 308          Element :=
 309            (Index => Lang,
 310             Index_Case_Sensitive => False,
 311             Value => (Project  => No_Project,
 312                       Kind     => Single,
 313                       Location => No_Location,
 314                       Default  => False,
 315                       Value    => Default_Spec_Suffix),
 316             Next  => Std_Naming_Data.Spec_Suffix);
 317          Array_Elements.Increment_Last;
 318          Array_Elements.Table (Array_Elements.Last) := Element;
 319          Std_Naming_Data.Spec_Suffix := Array_Elements.Last;
 320       end if;
 321
 322       Suffix := Std_Naming_Data.Body_Suffix;
 323       Found := False;
 324
 325       --  Look for an element of the body sufix array indexed by the language
 326       --  name. If one is found, put the default value.
 327
 328       while Suffix /= No_Array_Element and then not Found loop
 329          Element := Array_Elements.Table (Suffix);
 330
 331          if Element.Index = Lang then
 332             Found := True;
 333             Element.Value.Value := Default_Body_Suffix;
 334             Array_Elements.Table (Suffix) := Element;
 335
 336          else
 337             Suffix := Element.Next;
 338          end if;
 339       end loop;
 340
 341       --  If none can be found, create a new one.
 342
 343       if not Found then
 344          Element :=
 345            (Index => Lang,
 346             Index_Case_Sensitive => False,
 347             Value => (Project  => No_Project,
 348                       Kind     => Single,
 349                       Location => No_Location,
 350                       Default  => False,
 351                       Value    => Default_Body_Suffix),
 352             Next  => Std_Naming_Data.Body_Suffix);
 353          Array_Elements.Increment_Last;
 354          Array_Elements.Table (Array_Elements.Last) := Element;
 355          Std_Naming_Data.Body_Suffix := Array_Elements.Last;
 356       end if;
 357    end Register_Default_Naming_Scheme;
 358
 359    ------------
 360    --  Reset --
 361    ------------
 362
 363    procedure Reset is
 364    begin
 365       Projects.Init;
 366       Project_Lists.Init;
 367       Packages.Init;
 368       Arrays.Init;
 369       Variable_Elements.Init;
 370       String_Elements.Init;
 371       Prj.Com.Units.Init;
 372       Prj.Com.Units_Htable.Reset;
 373       Prj.Com.Files_Htable.Reset;
 374    end Reset;
 375
 376    ------------------------
 377    -- Same_Naming_Scheme --
 378    ------------------------
 379
 380    function Same_Naming_Scheme
 381      (Left, Right : Naming_Data)
 382       return        Boolean
 383    is
 384    begin
 385       return Left.Dot_Replacement = Right.Dot_Replacement
 386         and then Left.Casing = Right.Casing
 387         and then Left.Current_Spec_Suffix = Right.Current_Spec_Suffix
 388         and then Left.Current_Body_Suffix = Right.Current_Body_Suffix
 389         and then Left.Separate_Suffix = Right.Separate_Suffix;
 390    end Same_Naming_Scheme;
 391
 392    --------------------------
 393    -- Standard_Naming_Data --
 394    --------------------------
 395
 396    function Standard_Naming_Data return Naming_Data is
 397    begin
 398       Initialize;
 399       return Std_Naming_Data;
 400    end Standard_Naming_Data;
 401
 402    -----------
 403    -- Value --
 404    -----------
 405
 406    function Value (Image : String) return Casing_Type is
 407    begin
 408       for Casing in The_Casing_Images'Range loop
 409          if To_Lower (Image) = To_Lower (The_Casing_Images (Casing).all) then
 410             return Casing;
 411          end if;
 412       end loop;
 413
 414       raise Constraint_Error;
 415    end Value;
 416
 417 begin
 418    --  Make sure that the standard project file extension is compatible
 419    --  with canonical case file naming.
 420
 421    Canonical_Case_File_Name (Project_File_Extension);
 422 end Prj;