-- --
-- B o d y --
-- --
--- Copyright (C) 2001-2005, Free Software Foundation, Inc. --
+-- Copyright (C) 2001-2006, 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- --
-- btyp (Value_xx (X))
- -- where btyp is he base type of the prefix, and
+ -- where btyp is he base type of the prefix
-- For types whose root type is Character
-- xx = Character
-- For floating-point types and ordinary fixed-point types
-- xx = Real
+ -- For Wide_[Wide_]Character types, typ'Value (X) expands into:
+
+ -- btyp (Value_xx (X, EM))
+
+ -- where btyp is the base type of the prefix, and EM is the encoding method
+
-- For decimal types with size <= Integer'Size, typ'Value (X)
-- expands into
elsif Rtyp = Standard_Wide_Character then
Vid := RE_Value_Wide_Character;
+ Append_To (Args,
+ Make_Integer_Literal (Loc,
+ Intval => Int (Wide_Character_Encoding_Method)));
+
elsif Rtyp = Standard_Wide_Wide_Character then
Vid := RE_Value_Wide_Wide_Character;
+ Append_To (Args,
+ Make_Integer_Literal (Loc,
+ Intval => Int (Wide_Character_Encoding_Method)));
+
elsif Rtyp = Base_Type (Standard_Short_Short_Integer)
or else Rtyp = Base_Type (Standard_Short_Integer)
or else Rtyp = Base_Type (Standard_Integer)
-- --
-- B o d y --
-- --
--- Copyright (C) 1992-2005, Free Software Foundation, Inc. --
+-- Copyright (C) 1992-2006, 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- --
with Interfaces; use Interfaces;
with System.Val_Util; use System.Val_Util;
+with System.WCh_Cnv; use System.WCh_Cnv;
+with System.WCh_Con; use System.WCh_Con;
package body System.Val_WChar is
--------------------------
function Value_Wide_Character
- (Str : String) return Wide_Character
+ (Str : String;
+ EM : System.WCh_Con.WC_Encoding_Method) return Wide_Character
is
- WWC : constant Wide_Wide_Character := Value_Wide_Wide_Character (Str);
- WWV : constant Unsigned_32 := Wide_Wide_Character'Pos (WWC);
+ WC : constant Wide_Wide_Character := Value_Wide_Wide_Character (Str, EM);
+ WV : constant Unsigned_32 := Wide_Wide_Character'Pos (WC);
begin
- if WWV > 16#FFFF# then
+ if WV > 16#FFFF# then
raise Constraint_Error
with "out of range character for Value attribute";
else
- return Wide_Character'Val (WWV);
+ return Wide_Character'Val (WV);
end if;
end Value_Wide_Character;
-------------------------------
function Value_Wide_Wide_Character
- (Str : String) return Wide_Wide_Character
+ (Str : String;
+ EM : System.WCh_Con.WC_Encoding_Method) return Wide_Wide_Character
is
F : Natural;
L : Natural;
if S (F) = ''' and then S (L) = ''' then
+ -- Must be at least three characters
+
+ if L - F < 2 then
+ raise Constraint_Error;
+
-- If just three characters, simple character case
- if L - F = 2 then
+ elsif L - F = 2 then
return Wide_Wide_Character'Val (Character'Pos (S (F + 1)));
- -- Otherwise something is very wrong
+ -- Only other possibility for quoted string is wide char sequence
else
- raise Constraint_Error with "invalid string for Value attribute";
+ declare
+ P : Natural;
+ W : Wide_Wide_Character;
+
+ function In_Char return Character;
+ -- Function for instantiations of Char_Sequence_To_UTF_32
+
+ -------------
+ -- In_Char --
+ -------------
+
+ function In_Char return Character is
+ begin
+ P := P + 1;
+
+ if P = Str'Last then
+ raise Constraint_Error;
+ end if;
+
+ return Str (P);
+ end In_Char;
+
+ function UTF_32 is
+ new Char_Sequence_To_UTF_32 (In_Char);
+
+ begin
+ P := F + 1;
+
+ -- Brackets encoding
+
+ if S (F + 1) = '[' then
+ W := Wide_Wide_Character'Val (UTF_32 ('[', WCEM_Brackets));
+
+ else
+ W := Wide_Wide_Character'Val (UTF_32 (S (F + 1), EM));
+ end if;
+
+ if P /= L - 1 then
+ raise Constraint_Error;
+ end if;
+
+ return W;
+ end;
end if;
-- Deal with Hex_hhhhhhhh cases for wide_[wide_]character cases
- elsif Str'Length = 12 and then Str (1 .. 4) = "Hex_" then
+ elsif Str'Length = 12
+ and then Str (Str'First .. Str'First + 3) = "Hex_"
+ then
declare
W : Unsigned_32 := 0;
begin
- for J in 5 .. 12 loop
+ for J in Str'First + 4 .. Str'First + 11 loop
W := W * 16 + Character'Pos (Str (J));
if Str (J) in '0' .. '9' then
elsif Str (J) in 'a' .. 'f' then
W := W - Character'Pos ('a') + 10;
else
- raise Constraint_Error
- with "illegal hex character for Value attribute";
+ raise Constraint_Error;
end if;
end loop;
if W > 16#7FFF_FFFF# then
- raise Constraint_Error
- with "out of range value for Value attribute";
+ raise Constraint_Error;
else
return Wide_Wide_Character'Val (W);
end if;
return
Wide_Wide_Character'Val (Character'Pos (Character'Value (Str)));
end if;
+
+ exception
+ when Constraint_Error =>
+ raise Constraint_Error with "invalid string for value attribute";
end Value_Wide_Wide_Character;
end System.Val_WChar;
-- --
-- S p e c --
-- --
--- Copyright (C) 1992-2005, Free Software Foundation, Inc. --
+-- Copyright (C) 1992-2006, 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- --
-- Processing for Wide_[Wide_]Value attribute
+with System.WCh_Con;
+
package System.Val_WChar is
pragma Pure;
function Value_Wide_Character
- (Str : String) return Wide_Character;
- -- Computes Wide_Character'Value (Str)
+ (Str : String;
+ EM : System.WCh_Con.WC_Encoding_Method) return Wide_Character;
+ -- Computes Wide_Character'Value (Str). The parameter EM is the encoding
+ -- method used for any Wide_Character sequences in Str. Note that brackets
+ -- notation is always permitted.
function Value_Wide_Wide_Character
- (Str : String) return Wide_Wide_Character;
- -- Computes Wide_Character'Value (Str)
+ (Str : String;
+ EM : System.WCh_Con.WC_Encoding_Method) return Wide_Wide_Character;
+ -- Computes Wide_Character'Value (Str). The parameter EM is the encoding
+ -- method used for any wide_character sequences in Str. Note that brackets
+ -- notation is always permitted.
end System.Val_WChar;