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 --       Copyright (C) 1998-2001 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 -- Extensive contributions were provided by Ada Core Technologies Inc.   --
  23 --                                                                          --
  24 ------------------------------------------------------------------------------
  25
  26 with Hostparm;
  27 with GNAT.Directory_Operations; use GNAT.Directory_Operations;
  28 with GNAT.OS_Lib;               use GNAT.OS_Lib;
  29 with GNAT.Dynamic_Tables;
  30
  31 with Xr_Tabls;                  use Xr_Tabls;
  32 with GNAT.Regexp;               use GNAT.Regexp;
  33
  34 --  Misc. utilities for the cross-referencing tool
  35
  36 package Xref_Lib is
  37
  38    subtype File_Name_String is String (1 .. Hostparm.Max_Name_Length);
  39    subtype Line_String      is String (1 .. Hostparm.Max_Line_Length);
  40
  41    type ALI_File is limited private;
  42
  43    ---------------------
  44    -- Directory Input --
  45    ---------------------
  46    type Rec_DIR is limited private;
  47    --  This one is used for recursive search of .ali files
  48
  49    procedure Find_ALI_Files;
  50    --  Find all the ali files that we will have to parse, and have them to
  51    --  the file list
  52
  53    ---------------------
  54    -- Search patterns --
  55    ---------------------
  56
  57    type Search_Pattern is private;
  58    type Search_Pattern_Ptr is access all Search_Pattern;
  59
  60    procedure Add_Entity
  61      (Pattern : in out Search_Pattern;
  62       Entity  : String;
  63       Glob    : Boolean := False);
  64    --  Add a new entity to the search pattern (the entity should have the
  65    --  form pattern[:file[:line[:column]]], and it is parsed entirely in
  66    --  this procedure. Glob indicates if we should use the 'globbing
  67    --  patterns' (True) or the full regular expressions (False)
  68
  69    procedure Add_Xref_File (File : String);
  70    --  Add a new file in the list of files to search for references. File
  71    --  is interpreted as a globbing regular expression, which is expanded.
  72
  73    Invalid_Argument : exception;
  74    --  Exception raised when there is a syntax error in the command line
  75
  76    function Match
  77      (Pattern : Search_Pattern;
  78       Symbol  : String)
  79       return    Boolean;
  80    --  Returns true if Symbol matches one of the entities in the command line
  81
  82    -----------------------
  83    -- Output Algorithms --
  84    -----------------------
  85
  86    procedure Print_Gnatfind
  87      (References     : in Boolean;
  88       Full_Path_Name : in Boolean);
  89    procedure Print_Unused (Full_Path_Name : in Boolean);
  90    procedure Print_Vi (Full_Path_Name : in Boolean);
  91    procedure Print_Xref (Full_Path_Name : in Boolean);
  92    --  The actual print procedures. These functions step through the symbol
  93    --  table and print all the symbols if they match the files given on the
  94    --  command line (they already match the entities if they are in the
  95    --  symbol table)
  96
  97    ------------------------
  98    -- General Algorithms --
  99    ------------------------
 100    function Default_Project_File (Dir_Name : in String) return String;
 101    --  Returns the default Project file name
 102
 103    procedure Search
 104      (Pattern       : Search_Pattern;
 105       Local_Symbols : Boolean;
 106       Wide_Search   : Boolean;
 107       Read_Only     : Boolean;
 108       Der_Info      : Boolean;
 109       Type_Tree     : Boolean);
 110    --  Search every ali file (following the Readdir rule above), for
 111    --  each line matching Pattern, and executes Process on these
 112    --  lines. If World is True, Search will look into every .ali file
 113    --  in the object search path. If Read_Only is True, we parse the
 114    --  read-only ali files too. If Der_Mode is true then the derived type
 115    --  information will be processed. If Type_Tree is true then the type
 116    --  hierarchy will be search going from pattern to the parent type
 117
 118    procedure Search_Xref
 119      (Local_Symbols : Boolean;
 120       Read_Only     : Boolean;
 121       Der_Info      : Boolean);
 122    --  Search every ali file given in the command line and all their
 123    --  dependencies. If Read_Only is True, we parse the read-only ali
 124    --  files too. If Der_Mode is true then the derived type information will
 125    --  be processed
 126
 127    ---------------
 128    -- ALI files --
 129    ---------------
 130
 131    function Current_Xref_File
 132      (File : ALI_File)
 133       return Xr_Tabls.File_Reference;
 134    --  Returns the name of the file in which the last identifier
 135    --  is declared
 136
 137    function File_Name
 138      (File : ALI_File;
 139       Num  : Positive)
 140       return Xr_Tabls.File_Reference;
 141    --  Returns the dependency file name number Num
 142
 143    function Get_Full_Type (Abbrev : Character) return String;
 144    --  Returns the full type corresponding to a type letter as found in
 145    --  the .ali files.
 146
 147    procedure Open
 148      (Name         : in  String;
 149       File         : out ALI_File;
 150       Dependencies : in  Boolean := False);
 151    --  Open a new ALI file
 152    --  if Dependencies is True, the insert every library file 'with'ed in
 153    --  the files database (used for gnatxref)
 154
 155 private
 156    type Rec_DIR is limited record
 157       Dir : GNAT.Directory_Operations.Dir_Type;
 158    end record;
 159
 160    package Dependencies_Tables is new GNAT.Dynamic_Tables
 161      (Table_Component_Type => Xr_Tabls.File_Reference,
 162       Table_Index_Type     => Positive,
 163       Table_Low_Bound      => 1,
 164       Table_Initial        => 400,
 165       Table_Increment      => 100);
 166    use Dependencies_Tables;
 167
 168    type Dependencies is new Dependencies_Tables.Instance;
 169
 170    type ALI_File is limited record
 171       Buffer         : String_Access := null;
 172       --  Buffer used to read the whole file at once
 173
 174       Current_Line   : Positive;
 175       --  Start of the current line in Buffer
 176
 177       Xref_Line      : Positive;
 178       --  Start of the xref lines in Buffer
 179
 180       X_File         : Xr_Tabls.File_Reference;
 181       --  Stores the cross-referencing file-name ("X..." lines), as an
 182       --  index into the dependencies table
 183
 184       Dep : Dependencies;
 185       --  Store file name associated with each number ("D..." lines)
 186    end record;
 187
 188    --  The following record type stores all the patterns that are searched for
 189
 190    type Search_Pattern is record
 191       Entity : GNAT.Regexp.Regexp;
 192       --  A regular expression matching the entities we are looking for.
 193       --  File is a list of the places where the declaration of the entities
 194       --  has to be. When the user enters a file:line:column on the command
 195       --  line, it is stored as "Entity_Name Declaration_File:line:column"
 196
 197       Initialized : Boolean := False;
 198       --  Set to True when Entity has been initialized.
 199    end record;
 200    --  Stores all the pattern that are search for.
 201 end Xref_Lib;