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s-strxdr.adb, [...] (Block_IO_OK): New subprogram. 

2008-04-08  Hristian Kirtchev  <kirtchev@adacore.com>

	* s-strxdr.adb, s-stratt.ads, s-stratt.adb (Block_IO_OK): New
	subprogram.
	Add new subtype S_WWC, unchecked conversion routines From_WWC and
	To_WWC.
	(I_WWC, O_WWC): New routines for input and output of
	Wide_Wide_Character.

From-SVN: r134052
This commit is contained in:
Hristian Kirtchev 2008-04-08 08:55:45 +02:00 committed by Arnaud Charlet
parent 7f8b32d541
commit 9147cc0be7
3 changed files with 156 additions and 20 deletions
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44
gcc/ada/s-stratt.adb
View File

@ -6,7 +6,7 @@
-- --
-- B o d y --
-- --
-- Copyright (C) 1992-2007, Free Software Foundation, Inc. --
-- Copyright (C) 1992-2008, 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- --
@ -74,6 +74,7 @@ package body System.Stream_Attributes is
subtype S_SU is SEA (1 .. (UST.Short_Unsigned'Size + SU - 1) / SU);
subtype S_U is SEA (1 .. (UST.Unsigned'Size + SU - 1) / SU);
subtype S_WC is SEA (1 .. (Wide_Character'Size + SU - 1) / SU);
subtype S_WWC is SEA (1 .. (Wide_Wide_Character'Size + SU - 1) / SU);
-- Unchecked conversions from the elementary type to the stream type
@ -94,6 +95,7 @@ package body System.Stream_Attributes is
function From_SU is new UC (UST.Short_Unsigned, S_SU);
function From_U is new UC (UST.Unsigned, S_U);
function From_WC is new UC (Wide_Character, S_WC);
function From_WWC is new UC (Wide_Wide_Character, S_WWC);
-- Unchecked conversions from the stream type to elementary type
@ -114,6 +116,16 @@ package body System.Stream_Attributes is
function To_SU is new UC (S_SU, UST.Short_Unsigned);
function To_U is new UC (S_U, UST.Unsigned);
function To_WC is new UC (S_WC, Wide_Character);
function To_WWC is new UC (S_WWC, Wide_Wide_Character);
-----------------
-- Block_IO_OK --
-----------------
function Block_IO_OK return Boolean is
begin
return True;
end Block_IO_OK;
----------
-- I_AD --
@ -461,6 +473,24 @@ package body System.Stream_Attributes is
end if;
end I_WC;
-----------
-- I_WWC --
-----------
function I_WWC (Stream : not null access RST) return Wide_Wide_Character is
T : S_WWC;
L : SEO;
begin
Ada.Streams.Read (Stream.all, T, L);
if L < T'Last then
raise Err;
else
return To_WWC (T);
end if;
end I_WWC;
----------
-- W_AD --
----------
@ -665,4 +695,16 @@ package body System.Stream_Attributes is
Ada.Streams.Write (Stream.all, T);
end W_WC;
-----------
-- W_WWC --
-----------
procedure W_WWC
(Stream : not null access RST; Item : Wide_Wide_Character)
is
T : constant S_WWC := From_WWC (Item);
begin
Ada.Streams.Write (Stream.all, T);
end W_WWC;
end System.Stream_Attributes;

15
gcc/ada/s-stratt.ads
View File

@ -6,7 +6,7 @@
-- --
-- S p e c --
-- --
-- Copyright (C) 1992-2006, Free Software Foundation, Inc. --
-- Copyright (C) 1992-2008, 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- --
@ -121,6 +121,7 @@ package System.Stream_Attributes is
function I_SU (Stream : not null access RST) return UST.Short_Unsigned;
function I_U (Stream : not null access RST) return UST.Unsigned;
function I_WC (Stream : not null access RST) return Wide_Character;
function I_WWC (Stream : not null access RST) return Wide_Wide_Character;
-----------------------
-- Output Procedures --
@ -154,6 +155,14 @@ package System.Stream_Attributes is
Item : UST.Short_Unsigned);
procedure W_U (Stream : not null access RST; Item : UST.Unsigned);
procedure W_WC (Stream : not null access RST; Item : Wide_Character);
procedure W_WWC (Stream : not null access RST; Item : Wide_Wide_Character);
function Block_IO_OK return Boolean;
-- Package System.Stream_Attributes has several bodies - the default one
-- distributed with GNAT, s-strxdr.adb which is based on the XDR standard
-- and s-stratt.adb for Garlic. All three bodies share the same spec. The
-- role of this function is to determine whether the current version of
-- System.Stream_Attributes is able to support block IO.
private
pragma Inline (I_AD);
@ -175,6 +184,7 @@ private
pragma Inline (I_SU);
pragma Inline (I_U);
pragma Inline (I_WC);
pragma Inline (I_WWC);
pragma Inline (W_AD);
pragma Inline (W_AS);
@ -195,5 +205,8 @@ private
pragma Inline (W_SU);
pragma Inline (W_U);
pragma Inline (W_WC);
pragma Inline (W_WWC);
pragma Inline (Block_IO_OK);
end System.Stream_Attributes;

117
gcc/ada/s-strxdr.adb
View File

@ -6,7 +6,7 @@
-- --
-- B o d y --
-- --
-- Copyright (C) 1996-2006, Free Software Foundation, Inc. --
-- Copyright (C) 1996-2008, Free Software Foundation, Inc. --
-- --
-- GARLIC 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- --
@ -267,6 +267,12 @@ package body System.Stream_Attributes is
subtype XDR_S_WC is SEA (1 .. WC_L);
type XDR_WC is mod BB ** WC_L;
-- Consider Wide_Wide_Character as an enumeration type
WWC_L : constant := 8;
subtype XDR_S_WWC is SEA (1 .. WWC_L);
type XDR_WWC is mod BB ** WWC_L;
-- Optimization: if we already have the correct Bit_Order, then some
-- computations can be avoided since the source and the target will be
-- identical anyway. They will be replaced by direct unchecked
@ -275,6 +281,15 @@ package body System.Stream_Attributes is
Optimize_Integers : constant Boolean :=
Default_Bit_Order = High_Order_First;
-----------------
-- Block_IO_OK --
-----------------
function Block_IO_OK return Boolean is
begin
return False;
end Block_IO_OK;
----------
-- I_AD --
----------
@ -303,6 +318,7 @@ package body System.Stream_Attributes is
if L /= S'Last then
raise Data_Error;
else
for N in S'Range loop
U := U * BB + XDR_TM (S (N));
@ -338,8 +354,8 @@ package body System.Stream_Attributes is
if L /= S'Last then
raise Data_Error;
else
else
-- Use Ada requirements on Character representation clause
return Character'Val (S (1));
@ -694,10 +710,11 @@ package body System.Stream_Attributes is
if L /= S'Last then
raise Data_Error;
elsif Optimize_Integers then
return XDR_S_LLI_To_Long_Long_Integer (S);
else
else
-- Compute using machine unsigned for computing
-- rather than long_long_unsigned.
@ -737,10 +754,11 @@ package body System.Stream_Attributes is
if L /= S'Last then
raise Data_Error;
elsif Optimize_Integers then
return XDR_S_LLU_To_Long_Long_Unsigned (S);
else
else
-- Compute using machine unsigned
-- rather than long_long_unsigned.
@ -774,10 +792,11 @@ package body System.Stream_Attributes is
if L /= S'Last then
raise Data_Error;
elsif Optimize_Integers then
return Long_Unsigned (XDR_S_LU_To_Long_Long_Unsigned (S));
else
else
-- Compute using machine unsigned
-- rather than long_unsigned.
@ -924,8 +943,10 @@ package body System.Stream_Attributes is
if L /= S'Last then
raise Data_Error;
elsif Optimize_Integers then
return XDR_S_SSI_To_Short_Short_Integer (S);
else
U := XDR_SSU (S (1));
@ -953,9 +974,9 @@ package body System.Stream_Attributes is
if L /= S'Last then
raise Data_Error;
else
U := XDR_SSU (S (1));
return Short_Short_Unsigned (U);
end if;
end I_SSU;
@ -974,8 +995,10 @@ package body System.Stream_Attributes is
if L /= S'Last then
raise Data_Error;
elsif Optimize_Integers then
return XDR_S_SU_To_Short_Unsigned (S);
else
for N in S'Range loop
U := U * BB + XDR_SU (S (N));
@ -1026,6 +1049,7 @@ package body System.Stream_Attributes is
if L /= S'Last then
raise Data_Error;
else
for N in S'Range loop
U := U * BB + XDR_WC (S (N));
@ -1037,6 +1061,32 @@ package body System.Stream_Attributes is
end if;
end I_WC;
-----------
-- I_WWC --
-----------
function I_WWC (Stream : not null access RST) return Wide_Wide_Character is
S : XDR_S_WWC;
L : SEO;
U : XDR_WWC := 0;
begin
Ada.Streams.Read (Stream.all, S, L);
if L /= S'Last then
raise Data_Error;
else
for N in S'Range loop
U := U * BB + XDR_WWC (S (N));
end loop;
-- Use Ada requirements on Wide_Wide_Character representation clause
return Wide_Wide_Character'Val (U);
end if;
end I_WWC;
----------
-- W_AD --
----------
@ -1111,7 +1161,6 @@ package body System.Stream_Attributes is
pragma Assert (C_L = 1);
begin
-- Use Ada requirements on Character representation clause
S (1) := SE (Character'Pos (Item));
@ -1212,8 +1261,8 @@ package body System.Stream_Attributes is
begin
if Optimize_Integers then
S := Integer_To_XDR_S_I (Item);
else
else
-- Test sign and apply two complement notation
if Item < 0 then
@ -1329,8 +1378,8 @@ package body System.Stream_Attributes is
begin
if Optimize_Integers then
S := Long_Long_Integer_To_XDR_S_LI (Long_Long_Integer (Item));
else
else
-- Test sign and apply two complement notation
if Item < 0 then
@ -1462,8 +1511,9 @@ package body System.Stream_Attributes is
-- W_LLI --
-----------
procedure W_LLI (Stream : not null access RST;
Item : Long_Long_Integer)
procedure W_LLI
(Stream : not null access RST;
Item : Long_Long_Integer)
is
S : XDR_S_LLI;
U : Unsigned;
@ -1472,8 +1522,8 @@ package body System.Stream_Attributes is
begin
if Optimize_Integers then
S := Long_Long_Integer_To_XDR_S_LLI (Item);
else
else
-- Test sign and apply two complement notation
if Item < 0 then
@ -1510,8 +1560,10 @@ package body System.Stream_Attributes is
-- W_LLU --
-----------
procedure W_LLU (Stream : not null access RST;
Item : Long_Long_Unsigned) is
procedure W_LLU
(Stream : not null access RST;
Item : Long_Long_Unsigned)
is
S : XDR_S_LLU;
U : Unsigned;
X : Long_Long_Unsigned := Item;
@ -1519,6 +1571,7 @@ package body System.Stream_Attributes is
begin
if Optimize_Integers then
S := Long_Long_Unsigned_To_XDR_S_LLU (Item);
else
-- Compute using machine unsigned
-- rather than long_long_unsigned.
@ -1556,6 +1609,7 @@ package body System.Stream_Attributes is
begin
if Optimize_Integers then
S := Long_Long_Unsigned_To_XDR_S_LU (Long_Long_Unsigned (Item));
else
-- Compute using machine unsigned
-- rather than long_unsigned.
@ -1673,8 +1727,8 @@ package body System.Stream_Attributes is
begin
if Optimize_Integers then
S := Short_Integer_To_XDR_S_SI (Item);
else
else
-- Test sign and apply two complement's notation
if Item < 0 then
@ -1710,8 +1764,8 @@ package body System.Stream_Attributes is
begin
if Optimize_Integers then
S := Short_Short_Integer_To_XDR_S_SSI (Item);
else
else
-- Test sign and apply two complement's notation
if Item < 0 then
@ -1739,7 +1793,6 @@ package body System.Stream_Attributes is
begin
S (1) := SE (U);
Ada.Streams.Write (Stream.all, S);
end W_SSU;
@ -1754,6 +1807,7 @@ package body System.Stream_Attributes is
begin
if Optimize_Integers then
S := Short_Unsigned_To_XDR_S_SU (Item);
else
for N in reverse S'Range loop
S (N) := SE (U mod BB);
@ -1779,6 +1833,7 @@ package body System.Stream_Attributes is
begin
if Optimize_Integers then
S := Unsigned_To_XDR_S_U (Item);
else
for N in reverse S'Range loop
S (N) := SE (U mod BB);
@ -1802,7 +1857,6 @@ package body System.Stream_Attributes is
U : XDR_WC;
begin
-- Use Ada requirements on Wide_Character representation clause
U := XDR_WC (Wide_Character'Pos (Item));
@ -1819,4 +1873,31 @@ package body System.Stream_Attributes is
end if;
end W_WC;
-----------
-- W_WWC --
-----------
procedure W_WWC
(Stream : not null access RST; Item : Wide_Wide_Character)
is
S : XDR_S_WWC;
U : XDR_WWC;
begin
-- Use Ada requirements on Wide_Wide_Character representation clause
U := XDR_WWC (Wide_Wide_Character'Pos (Item));
for N in reverse S'Range loop
S (N) := SE (U mod BB);
U := U / BB;
end loop;
Ada.Streams.Write (Stream.all, S);
if U /= 0 then
raise Data_Error;
end if;
end W_WWC;
end System.Stream_Attributes;