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pela |
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---- ----
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---- PlTbUtils Types Package ----
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---- ----
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---- This file is part of the PlTbUtils project ----
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---- http://opencores.org/project,pltbutils ----
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---- ----
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---- Description: ----
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---- PlTbUtils is a collection of functions, procedures and ----
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---- components for easily creating stimuli and checking response ----
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---- in automatic self-checking testbenches. ----
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---- ----
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---- This file defines types used by PlTbUtils, mainly protected ----
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---- types. ----
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---- ----
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---- ----
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---- To Do: ----
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---- - ----
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---- ----
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---- Author(s): ----
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---- - Per Larsson, pela@opencores.org ----
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---- ----
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----------------------------------------------------------------------
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---- ----
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---- Copyright (C) 2009 Authors and OPENCORES.ORG ----
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---- ----
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---- This source file may be used and distributed without ----
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---- restriction provided that this copyright statement is not ----
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---- removed from the file and that any derivative work contains ----
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---- the original copyright notice and the associated disclaimer. ----
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---- ----
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---- This source file is free software; you can redistribute it ----
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---- and/or modify it under the terms of the GNU Lesser General ----
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---- Public License as published by the Free Software Foundation; ----
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---- either version 2.1 of the License, or (at your option) any ----
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---- later version. ----
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---- ----
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---- This source is distributed in the hope that it will be ----
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---- useful, but WITHOUT ANY WARRANTY; without even the implied ----
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---- warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR ----
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---- PURPOSE. See the GNU Lesser General Public License for more ----
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---- details. ----
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---- ----
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---- You should have received a copy of the GNU Lesser General ----
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---- Public License along with this source; if not, download it ----
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---- from http://www.opencores.org/lgpl.shtml ----
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---- ----
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----------------------------------------------------------------------
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library ieee;
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use ieee.std_logic_1164.all;
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package pltbutils_type_pkg is
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constant C_PLTBUTILS_SC_STRLEN : integer := 80;
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type pltbutils_p_integer_t is protected
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procedure clr;
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procedure inc;
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procedure dec;
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procedure set(x : integer);
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impure function value return integer;
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end protected pltbutils_p_integer_t;
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type pltbutils_p_std_logic_t is protected
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procedure clr;
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procedure set(x : std_logic);
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impure function value return std_logic;
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end protected pltbutils_p_std_logic_t;
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type pltbutils_p_string_t is protected
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procedure clr;
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procedure set(s : string);
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impure function value return string;
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end protected pltbutils_p_string_t;
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end package pltbutils_type_pkg;
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package body pltbutils_type_pkg is
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----------------------------------------------------------------------------
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type pltbutils_p_integer_t is protected body
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variable val : integer := 0;
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procedure clr is
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begin
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val := 0;
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end procedure clr;
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procedure inc is
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begin
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val := val + 1;
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end procedure inc;
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procedure dec is
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begin
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val := val - 1;
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end procedure dec;
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procedure set(x : integer) is
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begin
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val := x;
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end procedure set;
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impure function value return integer is
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begin
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return val;
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end function value;
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end protected body pltbutils_p_integer_t;
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----------------------------------------------------------------------------
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type pltbutils_p_std_logic_t is protected body
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variable val : std_logic := '0';
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procedure clr is
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begin
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val := '0';
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end procedure clr;
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procedure set(x : std_logic) is
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begin
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val := x;
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end procedure set;
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impure function value return std_logic is
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begin
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return val;
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end function value;
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end protected body pltbutils_p_std_logic_t;
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----------------------------------------------------------------------------
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type pltbutils_p_string_t is protected body
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variable str : string(1 to C_PLTBUTILS_SC_STRLEN) := (others => '0');
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procedure clr is
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begin
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str := (others => ' ');
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end procedure clr;
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procedure set(s : string) is
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variable j : positive := s'low;
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begin
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for i in str'range loop
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if j <= s'high then
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str(i) := s(j);
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else
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str(i) := ' ';
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end if;
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j := j + 1;
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end loop;
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end procedure set;
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impure function value return string is
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begin
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return str;
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end function value;
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end protected body pltbutils_p_string_t;
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----------------------------------------------------------------------------
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end package body pltbutils_type_pkg;
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