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IfElsePkg.vhd
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IfElsePkg.vhd
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--
-- File Name: IfElsePkg.vhd
-- Design Unit Name: IfElsePkg
-- Revision: STANDARD VERSION
--
-- Maintainer: Jim Lewis email: [email protected]
-- Contributor(s):
-- Jim Lewis [email protected]
--
--
-- Description:
-- Consolidated IfElse Utilities in one place for early analyze
--
--
-- Developed for:
-- SynthWorks Design Inc.
-- VHDL Training Classes
-- 11898 SW 128th Ave. Tigard, Or 97223
-- http://www.SynthWorks.com
--
-- Revision History:
-- Date Version Description
-- 07/2024 2024.07 Added IfElse for std_logic
-- 01/2024 2024.01 Initial revision
--
--
-- This file is part of OSVVM.
--
-- Copyright (c) 2024 by SynthWorks Design Inc.
--
-- Licensed under the Apache License, Version 2.0 (the "License");
-- you may not use this file except in compliance with the License.
-- You may obtain a copy of the License at
--
-- https://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS,
-- WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-- See the License for the specific language governing permissions and
-- limitations under the License.
--
use std.textio.all ;
library ieee ;
use ieee.std_logic_1164.all ;
use ieee.numeric_std.all ;
package IfElsePkg is
------------------------------------------------------------
-- IfElse
-- Crutch until VHDL-2019 conditional initialization
-- If condition is true return first parameter otherwise return second
------------------------------------------------------------
function IfElse(Expr : boolean ; A, B : string) return string ;
function IfElse(Expr : boolean ; A, B : std_logic) return std_logic ;
function IfElse(Expr : boolean ; A, B : std_logic_vector) return std_logic_vector ;
function IfElse(Expr : boolean ; A, B : integer) return integer ;
function IfElse(Expr : boolean ; A, B : boolean) return boolean ;
end IfElsePkg ;
--- ///////////////////////////////////////////////////////////////////////////
--- ///////////////////////////////////////////////////////////////////////////
--- ///////////////////////////////////////////////////////////////////////////
package body IfElsePkg is
------------------------------------------------------------
function IfElse(Expr : boolean ; A, B : string) return string is
------------------------------------------------------------
begin
if Expr then
return A ;
else
return B ;
end if ;
end function IfElse ;
------------------------------------------------------------
function IfElse(Expr : boolean ; A, B : std_logic) return std_logic is
------------------------------------------------------------
begin
if Expr then
return A ;
else
return B ;
end if ;
end function IfElse ;
------------------------------------------------------------
function IfElse(Expr : boolean ; A, B : std_logic_vector) return std_logic_vector is
------------------------------------------------------------
begin
if Expr then
return A ;
else
return B ;
end if ;
end function IfElse ;
------------------------------------------------------------
function IfElse(Expr : boolean ; A, B : integer) return integer is
------------------------------------------------------------
begin
if Expr then
return A ;
else
return B ;
end if ;
end function IfElse ;
------------------------------------------------------------
function IfElse(Expr : boolean ; A, B : boolean) return boolean is
------------------------------------------------------------
begin
if Expr then
return A ;
else
return B ;
end if ;
end function IfElse ;
end package body IfElsePkg ;