New Language: Ada

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

1 files changed, 171 insertions, 0 deletions

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+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT RUNTIME COMPONENTS                          --
+--                                                                          --
+--                      S Y S T E M . I M G _ C H A R                       --
+--                                                                          --
+--                                 B o d y                                  --
+--                                                                          --
+--                            $Revision: 1.11 $                             --
+--                                                                          --
+--     Copyright (C) 1992,1993,1994,1995 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.Img_Char is
+
+   ---------------------
+   -- Image_Character --
+   ---------------------
+
+   function Image_Character (V : Character) return String is
+      subtype Cname is String (1 .. 3);
+
+      S : Cname;
+
+      subtype C0_Range is Character
+        range Character'Val (16#00#) .. Character'Val (16#1F#);
+
+      C0 : constant array (C0_Range) of Cname :=
+              (Character'Val (16#00#) => "NUL",
+               Character'Val (16#01#) => "SOH",
+               Character'Val (16#02#) => "STX",
+               Character'Val (16#03#) => "ETX",
+               Character'Val (16#04#) => "EOT",
+               Character'Val (16#05#) => "ENQ",
+               Character'Val (16#06#) => "ACK",
+               Character'Val (16#07#) => "BEL",
+               Character'Val (16#08#) => "BS ",
+               Character'Val (16#09#) => "HT ",
+               Character'Val (16#0A#) => "LF ",
+               Character'Val (16#0B#) => "VT ",
+               Character'Val (16#0C#) => "FF ",
+               Character'Val (16#0D#) => "CR ",
+               Character'Val (16#0E#) => "SO ",
+               Character'Val (16#0F#) => "SI ",
+               Character'Val (16#10#) => "DLE",
+               Character'Val (16#11#) => "DC1",
+               Character'Val (16#12#) => "DC2",
+               Character'Val (16#13#) => "DC3",
+               Character'Val (16#14#) => "DC4",
+               Character'Val (16#15#) => "NAK",
+               Character'Val (16#16#) => "SYN",
+               Character'Val (16#17#) => "ETB",
+               Character'Val (16#18#) => "CAN",
+               Character'Val (16#19#) => "EM ",
+               Character'Val (16#1A#) => "SUB",
+               Character'Val (16#1B#) => "ESC",
+               Character'Val (16#1C#) => "FS ",
+               Character'Val (16#1D#) => "GS ",
+               Character'Val (16#1E#) => "RS ",
+               Character'Val (16#1F#) => "US ");
+
+      subtype C1_Range is Character
+        range Character'Val (16#7F#) .. Character'Val (16#9F#);
+
+      C1 : constant array (C1_Range) of Cname :=
+              (Character'Val (16#7F#) => "DEL",
+               Character'Val (16#80#) => "res",
+               Character'Val (16#81#) => "res",
+               Character'Val (16#82#) => "BPH",
+               Character'Val (16#83#) => "NBH",
+               Character'Val (16#84#) => "res",
+               Character'Val (16#85#) => "NEL",
+               Character'Val (16#86#) => "SSA",
+               Character'Val (16#87#) => "ESA",
+               Character'Val (16#88#) => "HTS",
+               Character'Val (16#89#) => "HTJ",
+               Character'Val (16#8A#) => "VTS",
+               Character'Val (16#8B#) => "PLD",
+               Character'Val (16#8C#) => "PLU",
+               Character'Val (16#8D#) => "RI ",
+               Character'Val (16#8E#) => "SS2",
+               Character'Val (16#8F#) => "SS3",
+               Character'Val (16#90#) => "DCS",
+               Character'Val (16#91#) => "PU1",
+               Character'Val (16#92#) => "PU2",
+               Character'Val (16#93#) => "STS",
+               Character'Val (16#94#) => "CCH",
+               Character'Val (16#95#) => "MW ",
+               Character'Val (16#96#) => "SPA",
+               Character'Val (16#97#) => "EPA",
+               Character'Val (16#98#) => "SOS",
+               Character'Val (16#99#) => "res",
+               Character'Val (16#9A#) => "SCI",
+               Character'Val (16#9B#) => "CSI",
+               Character'Val (16#9C#) => "ST ",
+               Character'Val (16#9D#) => "OSC",
+               Character'Val (16#9E#) => "PM ",
+               Character'Val (16#9F#) => "APC");
+
+   begin
+      --  Control characters are represented by their names (RM 3.5(32))
+
+      if V in C0_Range then
+         S := C0 (V);
+
+         if S (3) = ' ' then
+            return S (1 .. 2);
+         else
+            return S;
+         end if;
+
+      elsif V in C1_Range then
+         S := C1 (V);
+
+         if S (1) /= 'r' then
+            if S (3) = ' ' then
+               return S (1 .. 2);
+            else
+               return S;
+            end if;
+
+         --  Special case, res means RESERVED_nnn where nnn is the three digit
+         --  decimal value corresponding to the code position (more efficient
+         --  to compute than to store!)
+
+         else
+            declare
+               VP : constant Natural := Character'Pos (V);
+               St : String (1 .. 12) := "RESERVED_xxx";
+
+            begin
+               St (10) := Character'Val (48 + VP / 100);
+               St (11) := Character'Val (48 + (VP / 10) mod 10);
+               St (12) := Character'Val (48 + VP mod 10);
+               return St;
+            end;
+         end if;
+
+      --  Normal characters yield the character enlosed in quotes (RM 3.5(32))
+
+      else
+         S (1) := ''';
+         S (2) := V;
+         S (3) := ''';
+         return S;
+      end if;
+   end Image_Character;
+
+end System.Img_Char;