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8sa1-gcc/gcc/ada/gnatpsta.adb
Richard Kenner 38cbfe40a0 New Language: Ada 
From-SVN: r45955
2001-10-02 10:18:40 -04:00

376 lines
15 KiB
Ada
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------------------------------------------------------------------------------
-- --
-- GNAT SYSTEM UTILITIES --
-- --
-- G N A T P S T A --
-- --
-- B o d y --
-- --
-- $Revision: 1.10 $
-- --
-- Copyright (C) 1997-2001 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. --
-- --
-- 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). --
-- --
------------------------------------------------------------------------------
-- Program to print out listing of Standard package for the target (not
-- the host) with all constants appearing explicitly. This is not really
-- valid Ada, since one cannot really define new base types, but it is a
-- helpful listing from a documentation point of view.
-- Note that special care has been taken to use the host parameters for
-- integer and floating point sizes.
with Ada.Text_IO; use Ada.Text_IO;
with Gnatvsn;
with Ttypef; use Ttypef;
with Ttypes; use Ttypes;
with Types; use Types;
procedure GnatPsta is
pragma Ident (Gnatvsn.Gnat_Version_String);
procedure P (Item : String) renames Ada.Text_IO.Put_Line;
procedure P_Int_Range (Size : Pos; Put_First : Boolean := True);
-- Prints the range of an integer based on its Size. If Put_First is
-- False, then skip the first bound.
procedure P_Float_Range (Nb_Digits : Pos);
-- Prints the maximum range of a Float whose 'Digits is given by Nb_Digits
-------------------
-- P_Float_Range --
-------------------
procedure P_Float_Range (Nb_Digits : Pos) is
begin
-- This routine assumes only IEEE floats.
-- ??? Should the following be adapted for OpenVMS ?
case Nb_Digits is
when IEEES_Digits =>
P (" range " & IEEES_First'Universal_Literal_String & " .. " &
IEEES_Last'Universal_Literal_String & ";");
when IEEEL_Digits =>
P (" range " & IEEEL_First'Universal_Literal_String & " .. " &
IEEEL_Last'Universal_Literal_String & ";");
when IEEEX_Digits =>
P (" range " & IEEEX_First'Universal_Literal_String & " .. " &
IEEEX_Last'Universal_Literal_String & ";");
when others =>
P (";");
end case;
-- If one of the floating point types of the host computer has the
-- same digits as the target float we are processing, then print out
-- the float range using the host computer float type.
if Nb_Digits = Short_Float'Digits then
P (" -- " &
Short_Float'First'Img & " .. " & Short_Float'Last'Img);
elsif Nb_Digits = Float'Digits then
P (" -- " &
Float'First'Img & " .. " & Float'Last'Img);
elsif Nb_Digits = Long_Float'Digits then
P (" -- " &
Long_Float'First'Img & " .. " & Long_Float'Last'Img);
elsif Nb_Digits = Long_Long_Float'Digits then
P (" -- " &
Long_Long_Float'First'Img & " .. " & Long_Long_Float'Last'Img);
end if;
New_Line;
end P_Float_Range;
-----------------
-- P_Int_Range --
-----------------
procedure P_Int_Range (Size : Pos; Put_First : Boolean := True) is
begin
if Put_First then
Put (" is range -(2 **" & Pos'Image (Size - 1) & ")");
end if;
P (" .. +(2 **" & Pos'Image (Size - 1) & " - 1);");
end P_Int_Range;
-- Start of processing for GnatPsta
begin
P ("package Standard is");
P ("pragma Pure(Standard);");
New_Line;
P (" type Boolean is (False, True);");
New_Line;
-- Integer types
Put (" type Integer");
P_Int_Range (Standard_Integer_Size);
New_Line;
Put (" subtype Natural is Integer range 0");
P_Int_Range (Standard_Integer_Size, Put_First => False);
Put (" subtype Positive is Integer range 1");
P_Int_Range (Standard_Integer_Size, Put_First => False);
New_Line;
Put (" type Short_Short_Integer");
P_Int_Range (Standard_Short_Short_Integer_Size);
Put (" type Short_Integer ");
P_Int_Range (Standard_Short_Integer_Size);
Put (" type Long_Integer ");
P_Int_Range (Standard_Long_Integer_Size);
Put (" type Long_Long_Integer ");
P_Int_Range (Standard_Long_Long_Integer_Size);
New_Line;
-- Floating point types
P (" type Short_Float is digits"
& Standard_Short_Float_Digits'Img);
P_Float_Range (Standard_Short_Float_Digits);
P (" type Float is digits"
& Standard_Float_Digits'Img);
P_Float_Range (Standard_Float_Digits);
P (" type Long_Float is digits"
& Standard_Long_Float_Digits'Img);
P_Float_Range (Standard_Long_Float_Digits);
P (" type Long_Long_Float is digits"
& Standard_Long_Long_Float_Digits'Img);
P_Float_Range (Standard_Long_Long_Float_Digits);
P (" -- function ""*"" (Left : root_integer; Right : root_real)");
P (" -- return root_real;");
New_Line;
P (" -- function ""*"" (Left : root_real; Right : root_integer)");
P (" -- return root_real;");
New_Line;
P (" -- function ""/"" (Left : root_real; Right : root_integer)");
P (" -- return root_real;");
New_Line;
P (" -- function ""*"" (Left : universal_fixed; " &
"Right : universal_fixed)");
P (" -- return universal_fixed;");
New_Line;
P (" -- function ""/"" (Left : universal_fixed; " &
"Right : universal_fixed)");
P (" -- return universal_fixed;");
New_Line;
P (" -- The declaration of type Character is based on the standard");
P (" -- ISO 8859-1 character set.");
New_Line;
P (" -- There are no character literals corresponding to the positions");
P (" -- for control characters. They are indicated by lower case");
P (" -- identifiers in the following list.");
New_Line;
P (" -- Note: this type cannot be represented accurately in Ada");
New_Line;
P (" -- type Character is");
New_Line;
P (" -- (nul, soh, stx, etx, eot, enq, ack, bel,");
P (" -- bs, ht, lf, vt, ff, cr, so, si,");
New_Line;
P (" -- dle, dc1, dc2, dc3, dc4, nak, syn, etb,");
P (" -- can, em, sub, esc, fs, gs, rs, us,");
New_Line;
P (" -- ' ', '!', '""', '#', '$', '%', '&', ''',");
P (" -- '(', ')', '*', '+', ',', '-', '.', '/',");
New_Line;
P (" -- '0', '1', '2', '3', '4', '5', '6', '7',");
P (" -- '8', '9', ':', ';', '<', '=', '>', '?',");
New_Line;
P (" -- '@', 'A', 'B', 'C', 'D', 'E', 'F', 'G',");
P (" -- 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O',");
New_Line;
P (" -- 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W',");
P (" -- 'X', 'Y', 'Z', '[', '\', ']', '^', '_',");
New_Line;
P (" -- '`', 'a', 'b', 'c', 'd', 'e', 'f', 'g',");
P (" -- 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o',");
New_Line;
P (" -- 'p', 'q', 'r', 's', 't', 'u', 'v', 'w',");
P (" -- 'x', 'y', 'z', '{', '|', '}', '~', del,");
New_Line;
P (" -- reserved_128, reserved_129, bph, nbh,");
P (" -- reserved_132, nel, ssa, esa,");
New_Line;
P (" -- hts, htj, vts, pld, plu, ri, ss2, ss3,");
New_Line;
P (" -- dcs, pu1, pu2, sts, cch, mw, spa, epa,");
New_Line;
P (" -- sos, reserved_153, sci, csi,");
P (" -- st, osc, pm, apc,");
New_Line;
P (" -- ... );");
New_Line;
P (" -- The declaration of type Wide_Character is based " &
"on the standard");
P (" -- ISO 10646 BMP character set.");
New_Line;
P (" -- Note: this type cannot be represented accurately in Ada");
New_Line;
P (" -- The first 256 positions have the same contents as " &
"type Character");
New_Line;
P (" -- type Wide_Character is (nul, soh ... FFFE, FFFF);");
New_Line;
P (" package ASCII is");
New_Line;
P (" -- Control characters:");
New_Line;
P (" NUL : constant Character := Character'Val (16#00#);");
P (" SOH : constant Character := Character'Val (16#01#);");
P (" STX : constant Character := Character'Val (16#02#);");
P (" ETX : constant Character := Character'Val (16#03#);");
P (" EOT : constant Character := Character'Val (16#04#);");
P (" ENQ : constant Character := Character'Val (16#05#);");
P (" ACK : constant Character := Character'Val (16#06#);");
P (" BEL : constant Character := Character'Val (16#07#);");
P (" BS : constant Character := Character'Val (16#08#);");
P (" HT : constant Character := Character'Val (16#09#);");
P (" LF : constant Character := Character'Val (16#0A#);");
P (" VT : constant Character := Character'Val (16#0B#);");
P (" FF : constant Character := Character'Val (16#0C#);");
P (" CR : constant Character := Character'Val (16#0D#);");
P (" SO : constant Character := Character'Val (16#0E#);");
P (" SI : constant Character := Character'Val (16#0F#);");
P (" DLE : constant Character := Character'Val (16#10#);");
P (" DC1 : constant Character := Character'Val (16#11#);");
P (" DC2 : constant Character := Character'Val (16#12#);");
P (" DC3 : constant Character := Character'Val (16#13#);");
P (" DC4 : constant Character := Character'Val (16#14#);");
P (" NAK : constant Character := Character'Val (16#15#);");
P (" SYN : constant Character := Character'Val (16#16#);");
P (" ETB : constant Character := Character'Val (16#17#);");
P (" CAN : constant Character := Character'Val (16#18#);");
P (" EM : constant Character := Character'Val (16#19#);");
P (" SUB : constant Character := Character'Val (16#1A#);");
P (" ESC : constant Character := Character'Val (16#1B#);");
P (" FS : constant Character := Character'Val (16#1C#);");
P (" GS : constant Character := Character'Val (16#1D#);");
P (" RS : constant Character := Character'Val (16#1E#);");
P (" US : constant Character := Character'Val (16#1F#);");
P (" DEL : constant Character := Character'Val (16#7F#);");
New_Line;
P (" -- Other characters:");
New_Line;
P (" Exclam : constant Character := '!';");
P (" Quotation : constant Character := '""';");
P (" Sharp : constant Character := '#';");
P (" Dollar : constant Character := '$';");
P (" Percent : constant Character := '%';");
P (" Ampersand : constant Character := '&';");
P (" Colon : constant Character := ':';");
P (" Semicolon : constant Character := ';';");
P (" Query : constant Character := '?';");
P (" At_Sign : constant Character := '@';");
P (" L_Bracket : constant Character := '[';");
P (" Back_Slash : constant Character := '\';");
P (" R_Bracket : constant Character := ']';");
P (" Circumflex : constant Character := '^';");
P (" Underline : constant Character := '_';");
P (" Grave : constant Character := '`';");
P (" L_Brace : constant Character := '{';");
P (" Bar : constant Character := '|';");
P (" R_Brace : constant Character := '}';");
P (" Tilde : constant Character := '~';");
New_Line;
P (" -- Lower case letters:");
New_Line;
for C in Character range 'a' .. 'z' loop
P (" LC_" & Character'Val (Character'Pos (C) - 32) &
" : constant Character := '" & C & "';");
end loop;
New_Line;
P (" end ASCII;");
New_Line;
P (" type String is array (Positive range <>) of Character;");
P (" pragma Pack (String);");
New_Line;
P (" type Wide_String is array (Positive range <>) of Wide_Character;");
P (" pragma Pack (Wide_String);");
New_Line;
-- Here it's OK to use the Duration type of the host compiler since
-- the implementation of Duration in GNAT is target independent.
P (" type Duration is delta" &
Duration'Image (Duration'Delta));
P (" range -((2 **" & Natural'Image (Duration'Size - 1) &
" - 1) *" & Duration'Image (Duration'Delta) & ") ..");
P (" +((2 **" & Natural'Image (Duration'Size - 1) &
" - 1) *" & Duration'Image (Duration'Delta) & ");");
P (" for Duration'Small use" & Duration'Image (Duration'Small) & ";");
New_Line;
P (" Constraint_Error : exception;");
P (" Program_Error : exception;");
P (" Storage_Error : exception;");
P (" Tasking_Error : exception;");
New_Line;
P ("end Standard;");
end GnatPsta;
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