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--                                                                          --

--                         GNAT COMPILER COMPONENTS                         --

--                                                                          --

--                          G N A T . R E G E X P                           --

--                                                                          --

--                                 S p e c                                  --

--                                                                          --

--                     Copyright (C) 1998-2010, AdaCore                     --

--                                                                          --

-- 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 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.                                     --

--                                                                          --

-- As a special exception under Section 7 of GPL version 3, you are granted --

-- additional permissions described in the GCC Runtime Library Exception,   --

-- version 3.1, as published by the Free Software Foundation.               --

--                                                                          --

-- You should have received a copy of the GNU General Public License and    --

-- a copy of the GCC Runtime Library Exception along with this program;     --

-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --

-- <http://www.gnu.org/licenses/>.                                          --

--                                                                          --

-- GNAT was originally developed  by the GNAT team at  New York University. --

-- Extensive contributions were provided by Ada Core Technologies Inc.      --

--                                                                          --

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--  Simple Regular expression matching

--  This package provides a simple implementation of a regular expression

--  pattern matching algorithm, using a subset of the syntax of regular

--  expressions copied from familiar Unix style utilities.

--  See file s-regexp.ads for full documentation of the interface

------------------------------------------------------------

-- Summary of Pattern Matching Packages in GNAT Hierarchy --

------------------------------------------------------------

--  There are three related packages that perform pattern matching functions.

--  the following is an outline of these packages, to help you determine

--  which is best for your needs.

--     GNAT.Regexp (files g-regexp.ads/s-regexp.ads/s-regexp.adb)

--       This is a simple package providing Unix-style regular expression

--       matching with the restriction that it matches entire strings. It

--       is particularly useful for file name matching, and in particular

--       it provides "globbing patterns" that are useful in implementing

--       unix or DOS style wild card matching for file names.

--     GNAT.Regpat (files g-regpat.ads/s-regpat.ads/g-regpat.adb)

--       This is a more complete implementation of Unix-style regular

--       expressions, copied from the original V7 style regular expression

--       library written in C by Henry Spencer. It is functionally the

--       same as this library, and uses the same internal data structures

--       stored in a binary compatible manner.

--     GNAT.Spitbol.Patterns (files g-spipat.ads/g-spipat.adb)

--       This is a completely general pattern matching package based on the

--       pattern language of SNOBOL4, as implemented in SPITBOL. The pattern

--       language is modeled on context free grammars, with context sensitive

--       extensions that provide full (type 0) computational capabilities.

with System.Regexp;

package GNAT.Regexp renames System.Regexp;