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[/] [openrisc/] [trunk/] [gnu-stable/] [gcc-4.5.1/] [gcc/] [ada/] [prep.ads] - Blame information for rev 826

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1 281 jeremybenn
------------------------------------------------------------------------------
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--                                                                          --
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--                         GNAT COMPILER COMPONENTS                         --
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--                                                                          --
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--                                 P R E P                                  --
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--                                                                          --
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--                                 S p e c                                  --
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--                                                                          --
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--          Copyright (C) 2002-2008, Free Software Foundation, Inc.         --
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--                                                                          --
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-- GNAT is free software;  you can  redistribute it  and/or modify it under --
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-- terms of the  GNU General Public License as published  by the Free Soft- --
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-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
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-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
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-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
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-- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
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-- for  more details.  You should have  received  a copy of the GNU General --
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-- Public License  distributed with GNAT; see file COPYING3.  If not, go to --
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-- http://www.gnu.org/licenses for a complete copy of the license.          --
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--                                                                          --
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-- GNAT was originally developed  by the GNAT team at  New York University. --
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-- Extensive contributions were provided by Ada Core Technologies Inc.      --
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--                                                                          --
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------------------------------------------------------------------------------
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with GNAT.Dynamic_Tables;
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with Namet; use Namet;
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with Types; use Types;
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package Prep is
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   -----------------
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   -- Symbol Data --
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   -----------------
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   type Symbol_Data is record
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      Symbol : Name_Id := No_Name;
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      --  The symbol in lower case
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      Original : Name_Id := No_Name;
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      --  The symbol as originally given in the definition file or on
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      --  the command line.
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      On_The_Command_Line : Boolean := False;
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      --  Set to True if symbol is defined on the command line.
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      --  Used to prevent replacement of command line symbols by definition
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      --  file symbols.
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      Is_A_String : Boolean := False;
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      --  Indicate if the value of the symbol has been specified as a string
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      --  or simply as a sequence of characters.
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      Value : String_Id := No_String;
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      --  The value of the symbol (string or sequence of characters)
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   end record;
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   True_Value : Symbol_Data :=
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     (Symbol              => No_Name,
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      Original            => No_Name,
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      On_The_Command_Line => False,
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      Is_A_String         => False,
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      Value               => No_String);
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   type Symbol_Id is new Nat;
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   No_Symbol : constant Symbol_Id := 0;
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   package Symbol_Table is new GNAT.Dynamic_Tables
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     (Table_Component_Type => Symbol_Data,
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      Table_Index_Type     => Symbol_Id,
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      Table_Low_Bound      => 1,
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      Table_Initial        => 10,
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      Table_Increment      => 100);
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   --  The table of all symbols
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   Mapping : Symbol_Table.Instance;
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   --  The mapping table of symbols to values used by procedure Parse_Def_File
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   --  and Preprocess.
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   function Index_Of (Symbol : Name_Id) return Symbol_Id;
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   --  Return the index in the Mapping table of Symbol.
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   --  Return No_Symbol if Symbol in not in the Mapping table.
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   --  Access to procedure types used by procedure Initialize below:
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   type Error_Msg_Proc is access procedure
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     (Msg : String; Flag_Location : Source_Ptr);
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   type Scan_Proc is access procedure;
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   type Set_Ignore_Errors_Proc is access procedure (To : Boolean);
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   type Put_Char_Proc is access procedure (C : Character);
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   type New_EOL_Proc is access procedure;
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   procedure Initialize;
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   --  Initialize the preprocessor's global structures
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   procedure Setup_Hooks
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     (Error_Msg         : Error_Msg_Proc;
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      Scan              : Scan_Proc;
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      Set_Ignore_Errors : Set_Ignore_Errors_Proc;
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      Put_Char          : Put_Char_Proc;
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      New_EOL           : New_EOL_Proc);
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   --  Set the i/o hooks used by the preprocessor
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   procedure Parse_Def_File;
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   --  Parse the definition file. The definition file must have already been
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   --  loaded and the scanner initialized.
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   procedure Preprocess (Source_Modified : out Boolean);
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   --  Preprocess the input file. The input file must have already been loaded
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   --  and the scanner initialized. Source_Modified is set to True iff the
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   --  preprocessor modified the source text.
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   procedure Check_Command_Line_Symbol_Definition
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     (Definition  : String;
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      Data        : out Symbol_Data);
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   --  Check the validity of a command line definition <symbol>=<value>.
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   --  Return the symbol and its value in Data if the definition is valid,
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   --  fail if it is not valid.
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   procedure Change_Reserved_Keyword_To_Symbol
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     (All_Keywords : Boolean := False);
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   --  If Token is an Ada reserved word (other than IF, ELSIF, ELSE,
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   --  END, AND, OR, THEN when All_Keywords is False), change it to
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   --  Tok_Identifier with the corresponding Token_Name.
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   procedure List_Symbols (Foreword : String);
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   --  List the symbols used for preprocessing a file, with their values.
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   --  If Foreword is not empty, Output Foreword before the list.
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end Prep;

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