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-- Name table.
-- Copyright (C) 2002, 2003, 2004, 2005 Tristan Gingold
--
-- GHDL is free software; you can redistribute it and/or modify it under
-- the terms of the GNU General Public License as published by the Free
-- Software Foundation; either version 2, or (at your option) any later
-- version.
--
-- GHDL is distributed in the hope that it will be useful, but WITHOUT 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
-- along with GHDL; see the file COPYING. If not, write to the Free
-- Software Foundation, 59 Temple Place - Suite 330, Boston, MA
-- 02111-1307, USA.
with System;
with Types; use Types;
-- A very simple name table.
-- This is an hash table, such as id1=id2 <=> get_string(id1)=get_string(id2).
package Name_Table is
-- Initialize the package, ie create tables.
procedure Initialize;
-- Get an entry in the name table.
-- (entries for characters are already built).
function Get_Identifier (Char: Character) return Name_Id;
pragma Inline (Get_Identifier);
-- Get or create an entry in the name table.
-- If an entry is created, its token value is tok_identifier.
-- Note:
-- an identifier is represented in all lower case letter,
-- an extended identifier is represented in backslashes, double internal
-- backslashes are simplified,
-- a string is represented by its contents (without the quotation
-- characters, and simplified),
-- a bit string is represented by its raw contents (no simplification).
function Get_Identifier (Str: String) return Name_Id;
-- Get the string associed to a name.
-- If the name is a character, then single quote are added.
function Image (Id: Name_Id) return String;
-- Get the address of the first character of ID.
-- The string is NUL-terminated (this is done by get_identifier).
function Get_Address (Id: Name_Id) return System.Address;
-- Get the length of ID.
function Get_Name_Length (Id: Name_Id) return Natural;
pragma Inline (Get_Name_Length);
-- Get the character associed to a name.
function Get_Character (Id: Name_Id) return Character;
pragma Inline (Get_Character);
-- Return TRUE iff ID is a character.
function Is_Character (Id: Name_Id) return Boolean;
pragma Inline (Is_Character);
-- Get or create an entry in the name table, use NAME_BUFFER/NAME_LENGTH.
function Get_Identifier return Name_Id;
-- Like GET_IDENTIFIER, but return NULL_IDENTIFIER if the identifier
-- is not found (and do not create an entry for it).
function Get_Identifier_No_Create return Name_Id;
-- Set NAME_BUFFER/NAME_LENGTH with the image of ID.
procedure Image (Id : Name_Id);
-- Get and set the info field associated with each identifier.
-- Used to store interpretations of the name.
function Get_Info (Id: Name_Id) return Int32;
pragma Inline (Get_Info);
procedure Set_Info (Id: Name_Id; Info: Int32);
pragma Inline (Set_Info);
-- Return the latest name_id used.
-- kludge, use only for debugging.
function Last_Name_Id return Name_Id;
-- Be sure all info fields have their default value.
procedure Assert_No_Infos;
-- This buffer is used by get_token to set the name.
-- This can be seen as a copy buffer but this is necessary for two reasons:
-- names case must be 'normalized', because VHDL is case insensitive.
Name_Buffer : String (1 .. 1024);
-- The length of the name string.
Name_Length: Natural;
-- Disp statistics.
-- Used for debugging.
procedure Disp_Stats;
end Name_Table;
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