1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT COMPILER COMPONENTS                         --
4--                                                                          --
5--                          G N A T . R E G E X P                           --
6--                                                                          --
7--                                 S p e c                                  --
8--                                                                          --
9--                     Copyright (C) 1998-2010, AdaCore                     --
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 3,  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.                                     --
17--                                                                          --
18-- As a special exception under Section 7 of GPL version 3, you are granted --
19-- additional permissions described in the GCC Runtime Library Exception,   --
20-- version 3.1, as published by the Free Software Foundation.               --
21--                                                                          --
22-- You should have received a copy of the GNU General Public License and    --
23-- a copy of the GCC Runtime Library Exception along with this program;     --
24-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
25-- <http://www.gnu.org/licenses/>.                                          --
26--                                                                          --
27-- GNAT was originally developed  by the GNAT team at  New York University. --
28-- Extensive contributions were provided by Ada Core Technologies Inc.      --
29--                                                                          --
30------------------------------------------------------------------------------
31
32--  Simple Regular expression matching
33
34--  This package provides a simple implementation of a regular expression
35--  pattern matching algorithm, using a subset of the syntax of regular
36--  expressions copied from familiar Unix style utilities.
37
38--  See file s-regexp.ads for full documentation of the interface
39
40------------------------------------------------------------
41-- Summary of Pattern Matching Packages in GNAT Hierarchy --
42------------------------------------------------------------
43
44--  There are three related packages that perform pattern matching functions.
45--  the following is an outline of these packages, to help you determine
46--  which is best for your needs.
47
48--     GNAT.Regexp (files g-regexp.ads/s-regexp.ads/s-regexp.adb)
49--       This is a simple package providing Unix-style regular expression
50--       matching with the restriction that it matches entire strings. It
51--       is particularly useful for file name matching, and in particular
52--       it provides "globbing patterns" that are useful in implementing
53--       unix or DOS style wild card matching for file names.
54
55--     GNAT.Regpat (files g-regpat.ads/s-regpat.ads/g-regpat.adb)
56--       This is a more complete implementation of Unix-style regular
57--       expressions, copied from the original V7 style regular expression
58--       library written in C by Henry Spencer. It is functionally the
59--       same as this library, and uses the same internal data structures
60--       stored in a binary compatible manner.
61
62--     GNAT.Spitbol.Patterns (files g-spipat.ads/g-spipat.adb)
63--       This is a completely general pattern matching package based on the
64--       pattern language of SNOBOL4, as implemented in SPITBOL. The pattern
65--       language is modeled on context free grammars, with context sensitive
66--       extensions that provide full (type 0) computational capabilities.
67
68with System.Regexp;
69
70package GNAT.Regexp renames System.Regexp;
71