gcc/ada/xref_lib.ads

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                              X R E F _ L I B                             --
   6 --                                                                          --
   7 --                                 S p e c                                  --
   8 --                                                                          --
   9 --                            $Revision: 1.20 $
  10 --                                                                          --
  11 --       Copyright (C) 1998-1999 Free Software Foundation, Inc.             --
  12 --                                                                          --
  13 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  14 -- terms of the  GNU General Public License as published  by the Free Soft- --
  15 -- ware  Foundation;  either version 2,  or (at your option) any later ver- --
  16 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  17 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  18 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  19 -- for  more details.  You should have  received  a copy of the GNU General --
  20 -- Public License  distributed with GNAT;  see file COPYING.  If not, write --
  21 -- to  the Free Software Foundation,  59 Temple Place - Suite 330,  Boston, --
  22 -- MA 02111-1307, USA.                                                      --
  23 --                                                                          --
  24 -- GNAT is maintained by Ada Core Technologies Inc (http://www.gnat.com).   --
  25 --                                                                          --
  26 ------------------------------------------------------------------------------
  27
  28 with Hostparm;
  29 with GNAT.Directory_Operations; use GNAT.Directory_Operations;
  30 with GNAT.OS_Lib;               use GNAT.OS_Lib;
  31 with GNAT.Dynamic_Tables;
  32
  33 with Xr_Tabls;                  use Xr_Tabls;
  34 with GNAT.Regexp;               use GNAT.Regexp;
  35
  36 --  Misc. utilities for the cross-referencing tool
  37
  38 package Xref_Lib is
  39
  40    subtype File_Name_String is String (1 .. Hostparm.Max_Name_Length);
  41    subtype Line_String      is String (1 .. Hostparm.Max_Line_Length);
  42
  43    type ALI_File is limited private;
  44
  45    ---------------------
  46    -- Directory Input --
  47    ---------------------
  48    type Rec_DIR is limited private;
  49    --  This one is used for recursive search of .ali files
  50
  51    procedure Find_ALI_Files;
  52    --  Find all the ali files that we will have to parse, and have them to
  53    --  the file list
  54
  55    ---------------------
  56    -- Search patterns --
  57    ---------------------
  58
  59    type Search_Pattern is private;
  60    type Search_Pattern_Ptr is access all Search_Pattern;
  61
  62    procedure Add_Entity
  63      (Pattern : in out Search_Pattern;
  64       Entity  : String;
  65       Glob    : Boolean := False);
  66    --  Add a new entity to the search pattern (the entity should have the
  67    --  form pattern[:file[:line[:column]]], and it is parsed entirely in
  68    --  this procedure. Glob indicates if we should use the 'globbing
  69    --  patterns' (True) or the full regular expressions (False)
  70
  71    procedure Add_File (File : String);
  72    --  Add a new file in the list of files to search for references.
  73    --  File is considered to be a globbing regular expression, which is thus
  74    --  expanded
  75
  76    Invalid_Argument : exception;
  77    --  Exception raised when there is a syntax error in the command line
  78
  79    function Match
  80      (Pattern : Search_Pattern;
  81       Symbol  : String)
  82       return    Boolean;
  83    --  Returns true if Symbol matches one of the entities in the command line
  84
  85    -----------------------
  86    -- Output Algorithms --
  87    -----------------------
  88
  89    procedure Print_Gnatfind
  90      (References     : in Boolean;
  91       Full_Path_Name : in Boolean);
  92    procedure Print_Unused (Full_Path_Name : in Boolean);
  93    procedure Print_Vi (Full_Path_Name : in Boolean);
  94    procedure Print_Xref (Full_Path_Name : in Boolean);
  95    --  The actual print procedures. These functions step through the symbol
  96    --  table and print all the symbols if they match the files given on the
  97    --  command line (they already match the entities if they are in the
  98    --  symbol table)
  99
 100    ------------------------
 101    -- General Algorithms --
 102    ------------------------
 103    function Default_Project_File (Dir_Name : in String) return String;
 104    --  Returns the default Project file name
 105
 106    procedure Search
 107      (Pattern       : Search_Pattern;
 108       Local_Symbols : Boolean;
 109       Wide_Search   : Boolean;
 110       Read_Only     : Boolean;
 111       Der_Info      : Boolean;
 112       Type_Tree     : Boolean);
 113    --  Search every ali file (following the Readdir rule above), for
 114    --  each line matching Pattern, and executes Process on these
 115    --  lines. If World is True, Search will look into every .ali file
 116    --  in the object search path. If Read_Only is True, we parse the
 117    --  read-only ali files too. If Der_Mode is true then the derived type
 118    --  information will be processed. If Type_Tree is true then the type
 119    --  hierarchy will be search going from pattern to the parent type
 120
 121    procedure Search_Xref
 122      (Local_Symbols : Boolean;
 123       Read_Only     : Boolean;
 124       Der_Info      : Boolean);
 125    --  Search every ali file given in the command line and all their
 126    --  dependencies. If Read_Only is True, we parse the read-only ali
 127    --  files too. If Der_Mode is true then the derived type information will
 128    --  be processed
 129
 130    ---------------
 131    -- ALI files --
 132    ---------------
 133
 134    function Current_Xref_File
 135      (File : ALI_File)
 136       return Xr_Tabls.File_Reference;
 137    --  Returns the name of the file in which the last identifier
 138    --  is declared
 139
 140    function File_Name
 141      (File : ALI_File;
 142       Num  : Positive)
 143       return Xr_Tabls.File_Reference;
 144    --  Returns the dependency file name number Num
 145
 146    function Get_Full_Type (Abbrev : Character) return String;
 147    --  Returns the full type corresponding to a type letter as found in
 148    --  the .ali files.
 149
 150    procedure Open
 151      (Name         : in  String;
 152       File         : out ALI_File;
 153       Dependencies : in  Boolean := False);
 154    --  Open a new ALI file
 155    --  if Dependencies is True, the insert every library file 'with'ed in
 156    --  the files database (used for gnatxref)
 157
 158
 159 private
 160    type Rec_DIR is limited record
 161       Dir : GNAT.Directory_Operations.Dir_Type;
 162    end record;
 163
 164    package Dependencies_Tables is new GNAT.Dynamic_Tables
 165      (Table_Component_Type => Xr_Tabls.File_Reference,
 166       Table_Index_Type     => Positive,
 167       Table_Low_Bound      => 1,
 168       Table_Initial        => 400,
 169       Table_Increment      => 100);
 170    use Dependencies_Tables;
 171
 172    type Dependencies is new Dependencies_Tables.Instance;
 173
 174    type ALI_File is limited record
 175       Buffer         : String_Access := null;
 176       --  Buffer used to read the whole file at once
 177
 178       Current_Line   : Positive;
 179       --  Start of the current line in Buffer
 180
 181       Xref_Line      : Positive;
 182       --  Start of the xref lines in Buffer
 183
 184       X_File         : Xr_Tabls.File_Reference;
 185       --  Stores the cross-referencing file-name ("X..." lines), as an
 186       --  index into the dependencies table
 187
 188       Dep : Dependencies;
 189       --  Store file name associated with each number ("D..." lines)
 190    end record;
 191
 192    --  The following record type stores all the patterns that are searched for
 193
 194    type Search_Pattern is record
 195       Entity : GNAT.Regexp.Regexp;
 196       --  A regular expression matching the entities we are looking for.
 197       --  File is a list of the places where the declaration of the entities
 198       --  has to be. When the user enters a file:line:column on the command
 199       --  line, it is stored as "Entity_Name Declaration_File:line:column"
 200
 201       Initialized : Boolean := False;
 202       --  Set to True when Entity has been initialized.
 203    end record;
 204    --  Stores all the pattern that are search for.
 205 end Xref_Lib;