--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/ada/libgnat/a-tigeau.ads	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,191 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT RUN-TIME COMPONENTS                         --
+--                                                                          --
+--              A D A . T E X T _ I O . G E N E R I C _ A U X               --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--          Copyright (C) 1992-2017, 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 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.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  This package contains a set of auxiliary routines used by the Text_IO
+--  generic children, including for reading and writing numeric strings.
+
+private package Ada.Text_IO.Generic_Aux is
+
+   --  Note: for all the Load routines, File indicates the file to be read,
+   --  Buf is the string into which data is stored, Ptr is the index of the
+   --  last character stored so far, and is updated if additional characters
+   --  are stored. Data_Error is raised if the input overflows Buf. The only
+   --  Load routines that do a file status check are Load_Skip and Load_Width
+   --  so one of these two routines must be called first.
+
+   procedure Check_End_Of_Field
+     (Buf   : String;
+      Stop  : Integer;
+      Ptr   : Integer;
+      Width : Field);
+   --  This routine is used after doing a get operations on a numeric value.
+   --  Buf is the string being scanned, and Stop is the last character of
+   --  the field being scanned. Ptr is as set by the call to the scan routine
+   --  that scanned out the numeric value, i.e. it points one past the last
+   --  character scanned, and Width is the width parameter from the Get call.
+   --
+   --  There are two cases, if Width is non-zero, then a check is made that
+   --  the remainder of the field is all blanks. If Width is zero, then it
+   --  means that the scan routine scanned out only part of the field. We
+   --  have already scanned out the field that the ACVC tests seem to expect
+   --  us to read (even if it does not follow the syntax of the type being
+   --  scanned, e.g. allowing negative exponents in integers, and underscores
+   --  at the end of the string), so we just raise Data_Error.
+
+   procedure Check_On_One_Line (File : File_Type; Length : Integer);
+   --  Check to see if item of length Integer characters can fit on
+   --  current line. Call New_Line if not, first checking that the
+   --  line length can accommodate Length characters, raise Layout_Error
+   --  if item is too large for a single line.
+
+   function Getc (File : File_Type) return Integer;
+   --  Gets next character from file, which has already been checked for
+   --  being in read status, and returns the character read if no error
+   --  occurs. The result is EOF if the end of file was read. Note that
+   --  the Col value is not bumped, so it is the caller's responsibility
+   --  to bump it if necessary.
+
+   function Is_Blank (C : Character) return Boolean;
+   --  Determines if C is a blank (space or tab)
+
+   procedure Load_Width
+     (File  : File_Type;
+      Width : Field;
+      Buf   : out String;
+      Ptr   : in out Integer);
+   --  Loads exactly Width characters, unless a line mark is encountered first
+
+   procedure Load_Skip (File  : File_Type);
+   --  Skips leading blanks and line and page marks, if the end of file is
+   --  read without finding a non-blank character, then End_Error is raised.
+   --  Note: a blank is defined as a space or horizontal tab (RM A.10.6(5)).
+
+   procedure Load
+     (File   : File_Type;
+      Buf    : out String;
+      Ptr    : in out Integer;
+      Char   : Character;
+      Loaded : out Boolean);
+   --  If next character is Char, loads it, otherwise no characters are loaded
+   --  Loaded is set to indicate whether or not the character was found.
+
+   procedure Load
+     (File   : File_Type;
+      Buf    : out String;
+      Ptr    : in out Integer;
+      Char   : Character);
+   --  Same as above, but no indication if character is loaded
+
+   procedure Load
+     (File   : File_Type;
+      Buf    : out String;
+      Ptr    : in out Integer;
+      Char1  : Character;
+      Char2  : Character;
+      Loaded : out Boolean);
+   --  If next character is Char1 or Char2, loads it, otherwise no characters
+   --  are loaded. Loaded is set to indicate whether or not one of the two
+   --  characters was found.
+
+   procedure Load
+     (File   : File_Type;
+      Buf    : out String;
+      Ptr    : in out Integer;
+      Char1  : Character;
+      Char2  : Character);
+   --  Same as above, but no indication if character is loaded
+
+   procedure Load_Digits
+     (File   : File_Type;
+      Buf    : out String;
+      Ptr    : in out Integer;
+      Loaded : out Boolean);
+   --  Loads a sequence of zero or more decimal digits. Loaded is set if
+   --  at least one digit is loaded.
+
+   procedure Load_Digits
+     (File   : File_Type;
+      Buf    : out String;
+      Ptr    : in out Integer);
+   --  Same as above, but no indication if character is loaded
+
+   procedure Load_Extended_Digits
+     (File   : File_Type;
+      Buf    : out String;
+      Ptr    : in out Integer;
+      Loaded : out Boolean);
+   --  Like Load_Digits, but also allows extended digits a-f and A-F
+
+   procedure Load_Extended_Digits
+     (File   : File_Type;
+      Buf    : out String;
+      Ptr    : in out Integer);
+   --  Same as above, but no indication if character is loaded
+
+   function Nextc (File : File_Type) return Integer;
+   --  Like Getc, but includes a call to Ungetc, so that the file
+   --  pointer is not moved by the call.
+
+   procedure Put_Item (File : File_Type; Str : String);
+   --  This routine is like Text_IO.Put, except that it checks for overflow
+   --  of bounded lines, as described in (RM A.10.6(8)). It is used for
+   --  all output of numeric values and of enumeration values.
+
+   procedure Store_Char
+     (File : File_Type;
+      ch   : Integer;
+      Buf  : in out String;
+      Ptr  : in out Integer);
+   --  Store a single character in buffer, checking for overflow and
+   --  adjusting the column number in the file to reflect the fact
+   --  that a character has been acquired from the input stream. If
+   --  the character will not fit in the buffer it is stored in the
+   --  last character position of the buffer and Ptr is unchanged.
+   --  No exception is raised in this case, it is the caller's job
+   --  to raise Data_Error if the buffer fills up, so typically the
+   --  caller will make the buffer one character longer than needed.
+
+   procedure String_Skip (Str : String; Ptr : out Integer);
+   --  Used in the Get from string procedures to skip leading blanks in the
+   --  string. Ptr is set to the index of the first non-blank. If the string
+   --  is all blanks, then the exception End_Error is raised, Note that blank
+   --  is defined as a space or horizontal tab (RM A.10.6(5)).
+
+   procedure Ungetc (ch : Integer; File : File_Type);
+   --  Pushes back character into stream, using ungetc. The caller has
+   --  checked that the file is in read status. Device_Error is raised
+   --  if the character cannot be pushed back. An attempt to push back
+   --  an end of file (EOF) is ignored.
+
+private
+   pragma Inline (Is_Blank);
+
+end Ada.Text_IO.Generic_Aux;