New Language: Ada

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@45957 138bc75d-0d04-0410-961f-82ee72b054a4

1 files changed, 149 insertions, 0 deletions

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+------------------------------------------------------------------------------
+--                                                                          --
+--                GNU ADA RUNTIME LIBRARY (GNARL) COMPONENTS                --
+--                                                                          --
+--                    S Y S T E M . S T R I N G _ O P S                     --
+--                                                                          --
+--                                 B o d y                                  --
+--                                                                          --
+--                            $Revision: 1.8 $                              --
+--                                                                          --
+--          Copyright (C) 1992-1998 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- --
+-- 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.                                                      --
+--                                                                          --
+-- 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. --
+-- It is now maintained by Ada Core Technologies Inc (http://www.gnat.com). --
+--                                                                          --
+------------------------------------------------------------------------------
+
+package body System.String_Ops is
+
+   ----------------
+   -- Str_Concat --
+   ----------------
+
+   function Str_Concat (X, Y : String) return String is
+   begin
+      if X'Length <= 0 then
+         return Y;
+
+      else
+         declare
+            L : constant Natural := X'Length + Y'Length;
+            R : String (X'First .. X'First + L - 1);
+
+         begin
+            R (X'Range) := X;
+            R (X'First + X'Length .. R'Last) := Y;
+            return R;
+         end;
+      end if;
+   end Str_Concat;
+
+   -------------------
+   -- Str_Concat_CC --
+   -------------------
+
+   function Str_Concat_CC (X, Y : Character) return String is
+      R : String (1 .. 2);
+
+   begin
+      R (1) := X;
+      R (2) := Y;
+      return R;
+   end Str_Concat_CC;
+
+   -------------------
+   -- Str_Concat_CS --
+   -------------------
+
+   function Str_Concat_CS (X : Character; Y : String) return String is
+      R : String (1 .. Y'Length + 1);
+
+   begin
+      R (1) := X;
+      R (2 .. R'Last) := Y;
+      return R;
+   end Str_Concat_CS;
+
+   -------------------
+   -- Str_Concat_SC --
+   -------------------
+
+   function Str_Concat_SC (X : String; Y : Character) return String is
+   begin
+      if X'Length <= 0 then
+         return (1 => Y);
+
+      else
+         declare
+            R : String (X'First .. X'Last + 1);
+
+         begin
+            R (X'Range) := X;
+            R (R'Last) := Y;
+            return R;
+         end;
+      end if;
+   end Str_Concat_SC;
+
+   ---------------
+   -- Str_Equal --
+   ---------------
+
+   function Str_Equal (A, B : String) return Boolean is
+   begin
+      if A'Length /= B'Length then
+         return False;
+
+      else
+         for J in A'Range loop
+            if A (J) /= B (J + (B'First - A'First)) then
+               return False;
+            end if;
+         end loop;
+
+         return True;
+      end if;
+   end Str_Equal;
+
+   -------------------
+   -- Str_Normalize --
+   -------------------
+
+   procedure Str_Normalize (A : in out String) is
+   begin
+      for J in A'Range loop
+         A (J) := Character'Last;
+      end loop;
+   end Str_Normalize;
+
+   ------------------------
+   -- Wide_Str_Normalize --
+   ------------------------
+
+   procedure Wide_Str_Normalize (A : in out Wide_String) is
+   begin
+      for J in A'Range loop
+         A (J) := Wide_Character'Last;
+      end loop;
+   end Wide_Str_Normalize;
+
+end System.String_Ops;