gcc/ada/a-zchhan.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT RUN-TIME COMPONENTS                         --
   4 --                                                                          --
   5 --    A D A . W I D E _ W I D E _ C H A R A C T E R S . H A N D L I N G     --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --          Copyright (C) 2010-2013, Free Software Foundation, Inc.         --
  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 with Ada.Wide_Wide_Characters.Unicode; use Ada.Wide_Wide_Characters.Unicode;
  33
  34 package body Ada.Wide_Wide_Characters.Handling is
  35
  36    ---------------------
  37    -- Is_Alphanumeric --
  38    ---------------------
  39
  40    function Is_Alphanumeric (Item : Wide_Wide_Character) return Boolean is
  41    begin
  42       return Is_Letter (Item) or else Is_Digit (Item);
  43    end Is_Alphanumeric;
  44
  45    ----------------
  46    -- Is_Control --
  47    ----------------
  48
  49    function Is_Control (Item : Wide_Wide_Character) return Boolean is
  50    begin
  51       return Get_Category (Item) = Cc;
  52    end Is_Control;
  53
  54    --------------
  55    -- Is_Digit --
  56    --------------
  57
  58    function Is_Digit (Item : Wide_Wide_Character) return Boolean
  59      renames Ada.Wide_Wide_Characters.Unicode.Is_Digit;
  60
  61    ----------------
  62    -- Is_Graphic --
  63    ----------------
  64
  65    function Is_Graphic (Item : Wide_Wide_Character) return Boolean is
  66    begin
  67       return not Is_Non_Graphic (Item);
  68    end Is_Graphic;
  69
  70    --------------------------
  71    -- Is_Hexadecimal_Digit --
  72    --------------------------
  73
  74    function Is_Hexadecimal_Digit (Item : Wide_Wide_Character) return Boolean is
  75    begin
  76       return Is_Digit (Item)
  77         or else Item in 'A' .. 'F'
  78         or else Item in 'a' .. 'f';
  79    end Is_Hexadecimal_Digit;
  80
  81    ---------------
  82    -- Is_Letter --
  83    ---------------
  84
  85    function Is_Letter (Item : Wide_Wide_Character) return Boolean
  86      renames Ada.Wide_Wide_Characters.Unicode.Is_Letter;
  87
  88    ------------------------
  89    -- Is_Line_Terminator --
  90    ------------------------
  91
  92    function Is_Line_Terminator (Item : Wide_Wide_Character) return Boolean
  93      renames Ada.Wide_Wide_Characters.Unicode.Is_Line_Terminator;
  94
  95    --------------
  96    -- Is_Lower --
  97    --------------
  98
  99    function Is_Lower (Item : Wide_Wide_Character) return Boolean is
 100    begin
 101       return Get_Category (Item) = Ll;
 102    end Is_Lower;
 103
 104    -------------
 105    -- Is_Mark --
 106    -------------
 107
 108    function Is_Mark (Item : Wide_Wide_Character) return Boolean
 109      renames Ada.Wide_Wide_Characters.Unicode.Is_Mark;
 110
 111    ---------------------
 112    -- Is_Other_Format --
 113    ---------------------
 114
 115    function Is_Other_Format (Item : Wide_Wide_Character) return Boolean
 116      renames Ada.Wide_Wide_Characters.Unicode.Is_Other;
 117
 118    ------------------------------
 119    -- Is_Punctuation_Connector --
 120    ------------------------------
 121
 122    function Is_Punctuation_Connector
 123      (Item : Wide_Wide_Character) return Boolean
 124      renames Ada.Wide_Wide_Characters.Unicode.Is_Punctuation;
 125
 126    --------------
 127    -- Is_Space --
 128    --------------
 129
 130    function Is_Space (Item : Wide_Wide_Character) return Boolean
 131      renames Ada.Wide_Wide_Characters.Unicode.Is_Space;
 132
 133    ----------------
 134    -- Is_Special --
 135    ----------------
 136
 137    function Is_Special (Item : Wide_Wide_Character) return Boolean is
 138    begin
 139       return Is_Graphic (Item) and then not Is_Alphanumeric (Item);
 140    end Is_Special;
 141
 142    --------------
 143    -- Is_Upper --
 144    --------------
 145
 146    function Is_Upper (Item : Wide_Wide_Character) return Boolean is
 147    begin
 148       return Get_Category (Item) = Lu;
 149    end Is_Upper;
 150
 151    --------------
 152    -- To_Lower --
 153    --------------
 154
 155    function To_Lower (Item : Wide_Wide_Character) return Wide_Wide_Character
 156      renames Ada.Wide_Wide_Characters.Unicode.To_Lower_Case;
 157
 158    function To_Lower (Item : Wide_Wide_String) return Wide_Wide_String is
 159       Result : Wide_Wide_String (Item'Range);
 160
 161    begin
 162       for J in Result'Range loop
 163          Result (J) := To_Lower (Item (J));
 164       end loop;
 165
 166       return Result;
 167    end To_Lower;
 168
 169    --------------
 170    -- To_Upper --
 171    --------------
 172
 173    function To_Upper (Item : Wide_Wide_Character) return Wide_Wide_Character
 174      renames Ada.Wide_Wide_Characters.Unicode.To_Upper_Case;
 175
 176    function To_Upper (Item : Wide_Wide_String) return Wide_Wide_String is
 177       Result : Wide_Wide_String (Item'Range);
 178
 179    begin
 180       for J in Result'Range loop
 181          Result (J) := To_Upper (Item (J));
 182       end loop;
 183
 184       return Result;
 185    end To_Upper;
 186
 187 end Ada.Wide_Wide_Characters.Handling;