------------------------------------------------------------------------------ -- -- -- GNAT COMPILER COMPONENTS -- -- -- -- S Y S T E M . V A L _ E N U M -- -- -- -- B o d y -- -- -- -- Copyright (C) 1992-2000, 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. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ with Unchecked_Conversion; with System.Val_Util; use System.Val_Util; package body System.Val_Enum is ------------------------- -- Value_Enumeration_8 -- ------------------------- function Value_Enumeration_8 (Names : String; Indexes : System.Address; Num : Natural; Str : String) return Natural is F : Natural; L : Natural; S : String (Str'Range) := Str; type Natural_8 is range 0 .. 2 ** 7 - 1; type Index_Table is array (Natural) of Natural_8; type Index_Table_Ptr is access Index_Table; function To_Index_Table_Ptr is new Unchecked_Conversion (System.Address, Index_Table_Ptr); IndexesT : constant Index_Table_Ptr := To_Index_Table_Ptr (Indexes); begin Normalize_String (S, F, L); for J in 0 .. Num loop if Names (Natural (IndexesT (J)) .. Natural (IndexesT (J + 1)) - 1) = S (F .. L) then return J; end if; end loop; raise Constraint_Error; end Value_Enumeration_8; -------------------------- -- Value_Enumeration_16 -- -------------------------- function Value_Enumeration_16 (Names : String; Indexes : System.Address; Num : Natural; Str : String) return Natural is F : Natural; L : Natural; S : String (Str'Range) := Str; type Natural_16 is range 0 .. 2 ** 15 - 1; type Index_Table is array (Natural) of Natural_16; type Index_Table_Ptr is access Index_Table; function To_Index_Table_Ptr is new Unchecked_Conversion (System.Address, Index_Table_Ptr); IndexesT : constant Index_Table_Ptr := To_Index_Table_Ptr (Indexes); begin Normalize_String (S, F, L); for J in 0 .. Num loop if Names (Natural (IndexesT (J)) .. Natural (IndexesT (J + 1)) - 1) = S (F .. L) then return J; end if; end loop; raise Constraint_Error; end Value_Enumeration_16; -------------------------- -- Value_Enumeration_32 -- -------------------------- function Value_Enumeration_32 (Names : String; Indexes : System.Address; Num : Natural; Str : String) return Natural is F : Natural; L : Natural; S : String (Str'Range) := Str; type Natural_32 is range 0 .. 2 ** 31 - 1; type Index_Table is array (Natural) of Natural_32; type Index_Table_Ptr is access Index_Table; function To_Index_Table_Ptr is new Unchecked_Conversion (System.Address, Index_Table_Ptr); IndexesT : constant Index_Table_Ptr := To_Index_Table_Ptr (Indexes); begin Normalize_String (S, F, L); for J in 0 .. Num loop if Names (Natural (IndexesT (J)) .. Natural (IndexesT (J + 1)) - 1) = S (F .. L) then return J; end if; end loop; raise Constraint_Error; end Value_Enumeration_32; end System.Val_Enum;