-- --
-- S p e c --
-- --
--- --
--- Copyright (C) 1992-2000 Free Software Foundation, Inc. --
+-- Copyright (C) 1992-2010, Free Software Foundation, Inc. --
-- --
-- GNAT is free software; you can redistribute it and/or modify it under --
-- terms of the GNU General Public License as published by the Free Soft- --
--- ware Foundation; either version 2, or (at your option) any later ver- --
+-- ware Foundation; either version 3, or (at your option) any later ver- --
-- sion. GNAT is distributed in the hope that it will be useful, but WITH- --
-- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY --
-- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License --
-- for more details. You should have received a copy of the GNU General --
--- Public License distributed with GNAT; see file COPYING. If not, write --
--- to the Free Software Foundation, 59 Temple Place - Suite 330, Boston, --
--- MA 02111-1307, USA. --
+-- Public License distributed with GNAT; see file COPYING3. If not, go to --
+-- http://www.gnu.org/licenses for a complete copy of the license. --
-- --
-- GNAT was originally developed by the GNAT team at New York University. --
-- Extensive contributions were provided by Ada Core Technologies Inc. --
-- --
------------------------------------------------------------------------------
--- This package contains the lexical analyzer routines. This is used both
--- for scanning Ada source files and also for scanning Ada project files.
+-- This package contains the lexical analyzer routines. This is used by the
+-- compiler for scanning Ada source files.
with Casing; use Casing;
+with Errout; use Errout;
+with Scng;
+with Style; use Style;
with Types; use Types;
package Scn is
-- case is when Unit = No_Unit_Number, and Index corresponds to the
-- source index for reading the configuration pragma file.
- procedure Scan;
- -- Scan scans out the next token, and advances the scan state accordingly
- -- (see package Scan_State for details). If the scan encounters an illegal
- -- token, then an error message is issued pointing to the bad character,
- -- and Scan returns a reasonable substitute token of some kind.
+ function Determine_Token_Casing return Casing_Type;
+ -- Determines the casing style of the current token, which is
+ -- either a keyword or an identifier. See also package Casing.
- function Scan_First_Char return Source_Ptr;
- -- This routine returns the position in Source of the first non-blank
- -- character on the current line, used for certain error recovery actions.
+ procedure Post_Scan;
+ -- Create nodes for tokens: Char_Literal, Identifier, Real_Literal,
+ -- Integer_Literal, String_Literal and Operator_Symbol.
procedure Scan_Reserved_Identifier (Force_Msg : Boolean);
-- This procedure is called to convert the current token, which the caller
-- message, pointing to the token, is also issued if either this is the
-- first occurrence of misuse of this identifier, or if Force_Msg is True.
- function Determine_Token_Casing return Casing_Type;
- pragma Inline (Determine_Token_Casing);
- -- Determines the casing style of the current token, which is
- -- either a keyword or an identifier. See also package Casing.
+ -------------
+ -- Scanner --
+ -------------
+
+ -- The scanner used by the compiler is an instantiation of the
+ -- generic package Scng with routines appropriate to the compiler
+
+ package Scanner is new Scng
+ (Post_Scan => Post_Scan,
+ Error_Msg => Error_Msg,
+ Error_Msg_S => Error_Msg_S,
+ Error_Msg_SC => Error_Msg_SC,
+ Error_Msg_SP => Error_Msg_SP,
+ Style => Style.Style_Inst);
+
+ procedure Scan renames Scanner.Scan;
+ -- Scan scans out the next token, and advances the scan state accordingly
+ -- (see package Scans for details). If the scan encounters an illegal
+ -- token, then an error message is issued pointing to the bad character,
+ -- and Scan returns a reasonable substitute token of some kind.
end Scn;
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