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------------------------------------------------------------------------------
-- --
-- POLYORB COMPONENTS --
-- --
-- V A L U E S --
-- --
-- S p e c --
-- --
-- Copyright (C) 2005-2012, Free Software Foundation, Inc. --
-- --
-- This 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 3, or (at your option) any later ver- --
-- sion. This software is distributed in the hope that it will be useful, --
-- but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHAN- --
-- TABILITY 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 and --
-- a copy of the GCC Runtime Library Exception along with this program; --
-- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
-- <http://www.gnu.org/licenses/>. --
-- --
-- PolyORB is maintained by AdaCore --
-- (email: sales@adacore.com) --
-- --
------------------------------------------------------------------------------
with Types; use Types;
with Frontend.Nodes; use Frontend.Nodes;
package Values is
type Value_Type (K : Node_Kind := K_Float) is
record
case K is
when K_Short .. K_Unsigned_Long_Long
| K_Octet
| K_Boolean
| K_Fixed_Point_Type =>
IVal : Unsigned_Long_Long;
Sign : Short_Short;
case K is
when K_Fixed_Point_Type =>
Total : Unsigned_Short_Short;
Scale : Unsigned_Short_Short;
when others =>
Base : Unsigned_Short_Short;
end case;
when K_Float .. K_Long_Double =>
FVal : Long_Double;
when K_Char .. K_Wide_Char =>
CVal : Unsigned_Short;
when K_String .. K_Wide_String
| K_Enumerator =>
SVal : Name_Id;
case K is
when K_Enumerator =>
Pos : Unsigned_Long_Long;
when others =>
null;
end case;
when K_Void =>
null;
when others =>
null;
end case;
end record;
Bad_Value : constant Value_Type;
No_Value : constant Value_Id;
function New_Boolean_Value
(Value : Boolean) return Value_Id;
function New_Character_Value
(Value : Unsigned_Short;
Wide : Boolean) return Value_Id;
function New_Enumerator
(Img : Name_Id;
Pos : Unsigned_Long_Long) return Value_Id;
function New_Fixed_Point_Value
(Value : Unsigned_Long_Long;
Sign : Short_Short;
Total : Unsigned_Short_Short;
Scale : Unsigned_Short_Short) return Value_Id;
function New_Floating_Point_Value
(Value : Long_Double) return Value_Id;
function New_Integer_Value
(Value : Unsigned_Long_Long;
Sign : Short_Short;
Base : Unsigned_Short_Short) return Value_Id;
function New_String_Value
(Value : Name_Id;
Wide : Boolean) return Value_Id;
function New_Value
(Value : Value_Type) return Value_Id;
function Convert (V : Value_Type; K : Node_Kind) return Value_Type;
Max_Digits : constant := 31;
procedure Normalize_Fixed_Point_Value
(Value : in out Value_Id;
Total : Unsigned_Short_Short := Max_Digits;
Scale : Unsigned_Short_Short := Max_Digits);
procedure Normalize_Fixed_Point_Value
(Value : in out Value_Type;
Total : Unsigned_Short_Short := Max_Digits;
Scale : Unsigned_Short_Short := Max_Digits);
function Value (V : Value_Id) return Value_Type;
procedure Set_Value (V : Value_Id; X : Value_Type);
function Image (Value : Value_Id) return String;
function Image_Ada (Value : Value_Id) return String;
function "not" (R : Value_Type) return Value_Type;
function "-" (R : Value_Type) return Value_Type;
function "-" (L, R : Value_Type) return Value_Type;
function "+" (L, R : Value_Type) return Value_Type;
function "mod" (L, R : Value_Type) return Value_Type;
function "/" (L, R : Value_Type) return Value_Type;
function "*" (L, R : Value_Type) return Value_Type;
function "and" (L, R : Value_Type) return Value_Type;
function "or" (L, R : Value_Type) return Value_Type;
function "xor" (L, R : Value_Type) return Value_Type;
function Shift_Left (L, R : Value_Type) return Value_Type;
function Shift_Right (L, R : Value_Type) return Value_Type;
function "<" (L, R : Value_Type) return Boolean;
-- Assume L and R have the same type.
function Negative (V : Value_Type) return Boolean;
function Negative (V : Value_Id) return Boolean;
-- Return True when R is a strictly negative number. Raise an exception if
-- if R is not a number.
private
Bad_Value : constant Value_Type := Value_Type'((K => K_Void));
No_Value : constant Value_Id := 0;
end Values;
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