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------------------------------------------------------------------------------
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--                                                                          --
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--                         GNAT COMPILER COMPONENTS                         --
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--                                                                          --
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--                          G N A T . R E G E X P                           --
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--                                                                          --
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--                                 S p e c                                  --
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--                                                                          --
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--                     Copyright (C) 1998-2010, AdaCore                     --
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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.                                     --
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--                                                                          --
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-- As a special exception under Section 7 of GPL version 3, you are granted --
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-- additional permissions described in the GCC Runtime Library Exception,   --
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-- version 3.1, as published by the Free Software Foundation.               --
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--                                                                          --
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-- You should have received a copy of the GNU General Public License and    --
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-- a copy of the GCC Runtime Library Exception along with this program;     --
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-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
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-- <http://www.gnu.org/licenses/>.                                          --
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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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--  Simple Regular expression matching
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--  This package provides a simple implementation of a regular expression
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--  pattern matching algorithm, using a subset of the syntax of regular
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--  expressions copied from familiar Unix style utilities.
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--  See file s-regexp.ads for full documentation of the interface
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------------------------------------------------------------
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-- Summary of Pattern Matching Packages in GNAT Hierarchy --
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------------------------------------------------------------
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--  There are three related packages that perform pattern matching functions.
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--  the following is an outline of these packages, to help you determine
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--  which is best for your needs.
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--     GNAT.Regexp (files g-regexp.ads/s-regexp.ads/s-regexp.adb)
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--       This is a simple package providing Unix-style regular expression
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--       matching with the restriction that it matches entire strings. It
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--       is particularly useful for file name matching, and in particular
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--       it provides "globbing patterns" that are useful in implementing
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--       unix or DOS style wild card matching for file names.
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--     GNAT.Regpat (files g-regpat.ads/s-regpat.ads/g-regpat.adb)
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--       This is a more complete implementation of Unix-style regular
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--       expressions, copied from the original V7 style regular expression
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--       library written in C by Henry Spencer. It is functionally the
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--       same as this library, and uses the same internal data structures
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--       stored in a binary compatible manner.
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--     GNAT.Spitbol.Patterns (files g-spipat.ads/g-spipat.adb)
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--       This is a completely general pattern matching package based on the
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--       pattern language of SNOBOL4, as implemented in SPITBOL. The pattern
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--       language is modeled on context free grammars, with context sensitive
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--       extensions that provide full (type 0) computational capabilities.
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with System.Regexp;
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package GNAT.Regexp renames System.Regexp;

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