2007-04-20 Robert Dewar <dewar@adacore.com>

	* g-string.adb, s-proinf-irix-athread.adb, s-gloloc-mingw.adb,
	s-tfsetr-default.adb, gnatfind.adb, gnatxref.adb, gprep.adb,
	g-regexp.adb, g-regexp.ads, g-regpat.ads, g-tasloc.adb, g-tasloc.ads,
	output.adb, switch-m.ads, tree_in.ads, tree_io.ads, indepsw.ads,
	g-utf_32.adb, g-utf_32.ads, a-wichun.adb, a-wichun.ads, a-zchuni.adb,
	a-zchuni.ads: Replace GNAT.xxx by System.xxx when appropriate.

	* s-utf_32.adb, s-utf_32.ads, s-os_lib.adb, s-os_lib.ads, s-regexp.adb,
	s-regexp.ads, s-regpat.adb, s-regpat.ads, s-string.adb, s-string.ads,
	s-tasloc.adb, s-tasloc.ads: New files.



git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@125360 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 139 insertions, 0 deletions

diff --git a/gcc/ada/s-regexp.ads b/gcc/ada/s-regexp.ads
new file mode 100755
index 00000000000..d114f0d0ae6
--- /dev/null
+++ b/gcc/ada/s-regexp.ads
@@ -0,0 +1,139 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT COMPILER COMPONENTS                         --
+--                                                                          --
+--                        S Y S T E M . R E G E X P                         --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--                     Copyright (C) 1998-2007, 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 2,  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,  51  Franklin  Street,  Fifth  Floor, --
+-- Boston, MA 02110-1301, USA.                                              --
+--                                                                          --
+-- As a special exception,  if other files  instantiate  generics from this --
+-- unit, or you link  this unit with other files  to produce an executable, --
+-- this  unit  does not  by itself cause  the resulting  executable  to  be --
+-- covered  by the  GNU  General  Public  License.  This exception does not --
+-- however invalidate  any other reasons why  the executable file  might be --
+-- covered by the  GNU Public License.                                      --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  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.
+
+--  Note: this package is in the System hierarchy so that it can be directly
+--  be used by other predefined packages. User access to this package is via
+--  a renaming of this package in GNAT.Regexp (file g-regexp.ads).
+
+with Ada.Finalization;
+
+package System.Regexp is
+
+   --  The regular expression must first be compiled, using the Compile
+   --  function, which creates a finite state matching table, allowing
+   --  very fast matching once the expression has been compiled.
+
+   --  The following is the form of a regular expression, expressed in Ada
+   --  reference manual style BNF is as follows
+
+   --     regexp ::= term
+
+   --     regexp ::= term | term          -- alternation (term or term ...)
+
+   --     term ::= item
+
+   --     term ::= item item ...          -- concatenation (item then item)
+
+   --     item ::= elmt                   -- match elmt
+   --     item ::= elmt *                 -- zero or more elmt's
+   --     item ::= elmt +                 -- one or more elmt's
+   --     item ::= elmt ?                 -- matches elmt or nothing
+
+   --     elmt ::= nchr                   -- matches given character
+   --     elmt ::= [nchr nchr ...]        -- matches any character listed
+   --     elmt ::= [^ nchr nchr ...]      -- matches any character not listed
+   --     elmt ::= [char - char]          -- matches chars in given range
+   --     elmt ::= .                      -- matches any single character
+   --     elmt ::= ( regexp )             -- parens used for grouping
+
+   --     char ::= any character, including special characters
+   --     nchr ::= any character except \()[].*+?^ or \char to match char
+   --     ... is used to indication repetition (one or more terms)
+
+   --  See also regexp(1) man page on Unix systems for further details
+
+   --  A second kind of regular expressions is provided. This one is more
+   --  like the wild card patterns used in file names by the Unix shell (or
+   --  DOS prompt) command lines. The grammar is the following:
+
+   --     regexp ::= term
+
+   --     term   ::= elmt
+
+   --     term   ::= elmt elmt ...     -- concatenation (elmt then elmt)
+   --     term   ::= *                 -- any string of 0 or more characters
+   --     term   ::= ?                 -- matches any character
+   --     term   ::= [char char ...]   -- matches any character listed
+   --     term   ::= [char - char]     -- matches any character in given range
+   --     term   ::= {elmt, elmt, ...} -- alternation (matches any of elmt)
+
+   --  Important note : This package was mainly intended to match regular
+   --  expressions against file names. The whole string has to match the
+   --  regular expression. If only a substring matches, then the function
+   --  Match will return False.
+
+   type Regexp is private;
+   --  Private type used to represent a regular expression
+
+   Error_In_Regexp : exception;
+   --  Exception raised when an error is found in the regular expression
+
+   function Compile
+     (Pattern        : String;
+      Glob           : Boolean := False;
+      Case_Sensitive : Boolean := True) return Regexp;
+   --  Compiles a regular expression S. If the syntax of the given
+   --  expression is invalid (does not match above grammar, Error_In_Regexp
+   --  is raised. If Glob is True, the pattern is considered as a 'globbing
+   --  pattern', that is a pattern as given by the second grammar above.
+   --  As a special case, if Pattern is the empty string it will always
+   --  match.
+
+   function Match (S : String; R : Regexp) return Boolean;
+   --  True if S matches R, otherwise False. Raises Constraint_Error if
+   --  R is an uninitialized regular expression value.
+
+private
+   type Regexp_Value;
+
+   type Regexp_Access is access Regexp_Value;
+
+   type Regexp is new Ada.Finalization.Controlled with record
+      R : Regexp_Access := null;
+   end record;
+
+   pragma Finalize_Storage_Only (Regexp);
+
+   procedure Finalize (R : in out Regexp);
+   --  Free the memory occupied by R
+
+   procedure Adjust (R : in out Regexp);
+   --  Called after an assignment (do a copy of the Regexp_Access.all)
+
+end System.Regexp;