--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/ada/libgnat/a-zchuni.ads	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,196 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT RUN-TIME COMPONENTS                         --
+--                                                                          --
+--    A D A . W I D E _ W I D E _ C H A R A C T E R T S . U N I C O D E    --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--          Copyright (C) 2005-2017, 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.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  Unicode categorization routines for Wide_Wide_Character
+
+with System.UTF_32;
+
+package Ada.Wide_Wide_Characters.Unicode is
+   pragma Pure;
+
+   --  The following type defines the categories from the unicode definitions.
+   --  The one addition we make is Fe, which represents the characters FFFE
+   --  and FFFF in any of the planes.
+
+   type Category is new System.UTF_32.Category;
+   --  Cc   Other, Control
+   --  Cf   Other, Format
+   --  Cn   Other, Not Assigned
+   --  Co   Other, Private Use
+   --  Cs   Other, Surrogate
+   --  Ll   Letter, Lowercase
+   --  Lm   Letter, Modifier
+   --  Lo   Letter, Other
+   --  Lt   Letter, Titlecase
+   --  Lu   Letter, Uppercase
+   --  Mc   Mark, Spacing Combining
+   --  Me   Mark, Enclosing
+   --  Mn   Mark, Nonspacing
+   --  Nd   Number, Decimal Digit
+   --  Nl   Number, Letter
+   --  No   Number, Other
+   --  Pc   Punctuation, Connector
+   --  Pd   Punctuation, Dash
+   --  Pe   Punctuation, Close
+   --  Pf   Punctuation, Final quote
+   --  Pi   Punctuation, Initial quote
+   --  Po   Punctuation, Other
+   --  Ps   Punctuation, Open
+   --  Sc   Symbol, Currency
+   --  Sk   Symbol, Modifier
+   --  Sm   Symbol, Math
+   --  So   Symbol, Other
+   --  Zl   Separator, Line
+   --  Zp   Separator, Paragraph
+   --  Zs   Separator, Space
+   --  Fe   relative position FFFE/FFFF in plane
+
+   function Get_Category (U : Wide_Wide_Character) return Category;
+   pragma Inline (Get_Category);
+   --  Given a Wide_Wide_Character, returns corresponding Category, or Cn if
+   --  the code does not have an assigned unicode category.
+
+   --  The following functions perform category tests corresponding to lexical
+   --  classes defined in the Ada standard. There are two interfaces for each
+   --  function. The second takes a Category (e.g. returned by Get_Category).
+   --  The first takes a Wide_Wide_Character. The form taking the
+   --  Wide_Wide_Character is typically more efficient than calling
+   --  Get_Category, but if several different tests are to be performed on the
+   --  same code, it is more efficient to use Get_Category to get the category,
+   --  then test the resulting category.
+
+   function Is_Letter (U : Wide_Wide_Character) return Boolean;
+   function Is_Letter (C : Category)            return Boolean;
+   pragma Inline (Is_Letter);
+   --  Returns true iff U is a letter that can be used to start an identifier,
+   --  or if C is one of the corresponding categories, which are the following:
+   --    Letter, Uppercase (Lu)
+   --    Letter, Lowercase (Ll)
+   --    Letter, Titlecase (Lt)
+   --    Letter, Modifier  (Lm)
+   --    Letter, Other     (Lo)
+   --    Number, Letter    (Nl)
+
+   function Is_Digit (U : Wide_Wide_Character) return Boolean;
+   function Is_Digit (C : Category)            return Boolean;
+   pragma Inline (Is_Digit);
+   --  Returns true iff U is a digit that can be used to extend an identifer,
+   --  or if C is one of the corresponding categories, which are the following:
+   --    Number, Decimal_Digit (Nd)
+
+   function Is_Line_Terminator (U : Wide_Wide_Character) return Boolean;
+   pragma Inline (Is_Line_Terminator);
+   --  Returns true iff U is an allowed line terminator for source programs,
+   --  if U is in the category Zp (Separator, Paragaph), or Zs (Separator,
+   --  Line), or if U is a conventional line terminator (CR, LF, VT, FF).
+   --  There is no category version for this function, since the set of
+   --  characters does not correspond to a set of Unicode categories.
+
+   function Is_Mark (U : Wide_Wide_Character) return Boolean;
+   function Is_Mark (C : Category)            return Boolean;
+   pragma Inline (Is_Mark);
+   --  Returns true iff U is a mark character which can be used to extend an
+   --  identifier, or if C is one of the corresponding categories, which are
+   --  the following:
+   --    Mark, Non-Spacing (Mn)
+   --    Mark, Spacing Combining (Mc)
+
+   function Is_Other (U : Wide_Wide_Character) return Boolean;
+   function Is_Other (C : Category)            return Boolean;
+   pragma Inline (Is_Other);
+   --  Returns true iff U is an other format character, which means that it
+   --  can be used to extend an identifier, but is ignored for the purposes of
+   --  matching of identiers, or if C is one of the corresponding categories,
+   --  which are the following:
+   --    Other, Format (Cf)
+
+   function Is_Punctuation (U : Wide_Wide_Character) return Boolean;
+   function Is_Punctuation (C : Category)            return Boolean;
+   pragma Inline (Is_Punctuation);
+   --  Returns true iff U is a punctuation character that can be used to
+   --  separate pices of an identifier, or if C is one of the corresponding
+   --  categories, which are the following:
+   --    Punctuation, Connector (Pc)
+
+   function Is_Space (U : Wide_Wide_Character) return Boolean;
+   function Is_Space (C : Category)            return Boolean;
+   pragma Inline (Is_Space);
+   --  Returns true iff U is considered a space to be ignored, or if C is one
+   --  of the corresponding categories, which are the following:
+   --    Separator, Space (Zs)
+
+   function Is_Non_Graphic (U : Wide_Wide_Character) return Boolean;
+   function Is_Non_Graphic (C : Category)            return Boolean;
+   pragma Inline (Is_Non_Graphic);
+   --  Returns true iff U is considered to be a non-graphic character, or if C
+   --  is one of the corresponding categories, which are the following:
+   --    Other, Control (Cc)
+   --    Other, Private Use (Co)
+   --    Other, Surrogate (Cs)
+   --    Separator, Line (Zl)
+   --    Separator, Paragraph (Zp)
+   --    FFFE or FFFF positions in any plane (Fe)
+   --
+   --  Note that the Ada category format effector is subsumed by the above
+   --  list of Unicode categories.
+   --
+   --  Note that Other, Unassiged (Cn) is quite deliberately not included
+   --  in the list of categories above. This means that should any of these
+   --  code positions be defined in future with graphic characters they will
+   --  be allowed without a need to change implementations or the standard.
+   --
+   --  Note that Other, Format (Cf) is also quite deliberately not included
+   --  in the list of categories above. This means that these characters can
+   --  be included in character and string literals.
+
+   --  The following function is used to fold to upper case, as required by
+   --  the Ada 2005 standard rules for identifier case folding. Two
+   --  identifiers are equivalent if they are identical after folding all
+   --  letters to upper case using this routine. A fold to lower routine is
+   --  also provided.
+
+   function To_Lower_Case
+     (U : Wide_Wide_Character) return Wide_Wide_Character;
+   pragma Inline (To_Lower_Case);
+   --  If U represents an upper case letter, returns the corresponding lower
+   --  case letter, otherwise U is returned unchanged. The folding is locale
+   --  independent as defined by documents referenced in the note in section
+   --  1 of ISO/IEC 10646:2003
+
+   function To_Upper_Case
+     (U : Wide_Wide_Character) return Wide_Wide_Character;
+   pragma Inline (To_Upper_Case);
+   --  If U represents a lower case letter, returns the corresponding upper
+   --  case letter, otherwise U is returned unchanged. The folding is locale
+   --  independent as defined by documents referenced in the note in section
+   --  1 of ISO/IEC 10646:2003
+
+end Ada.Wide_Wide_Characters.Unicode;