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-- Types and functions for Haskell Primitives
library ieee;
use ieee.std_logic_1164.all;
use ieee.numeric_std.all;
package \Prim\ is
subtype \Int#\ is signed(31 downto 0);
subtype \GHC.Types.Int\ is signed(31 downto 0);
subtype \GHC.Types.Bool\ is std_logic;
-- Primitive arithmetic operations
function \GHC.Prim.==#\ ( a, b : \Int#\ ) return \GHC.Types.Bool\;
function \GHC.Prim.<#\ ( a, b : \Int#\ ) return \GHC.Types.Bool\;
function \GHC.Prim.-#\ ( a, b : \Int#\ ) return \Int#\;
-- Data Constructor predicates: each takes a object and returns
-- a boolean (i.e., tested with VHDL's if) that indicates whether the
-- object was constructed with the given constructor
function \is_GHC.Types.False\ (a : \GHC.Types.Bool\) return boolean;
function \is_GHC.Types.True\ (a : \GHC.Types.Bool\) return boolean;
function \is_GHC.Types.I#\ (a : \GHC.Types.Int\) return boolean;
-- Data "deconstructor" procedures: split apart an algebraic data type
-- into fields
procedure \expand_GHC.Types.I#\ ( input : in \GHC.Types.Int\;
field1 : out \Int#\);
end \Prim\;
package body \Prim\ is
function \GHC.Prim.==#\ ( a, b : \Int#\ ) return \GHC.Types.Bool\ is
begin
if a = b then
return '1';
else
return '0';
end if;
end \GHC.Prim.==#\;
function \GHC.Prim.<#\ ( a, b : \Int#\ ) return \GHC.Types.Bool\ is
begin
if a < b then
return '1';
else
return '0';
end if;
end \GHC.Prim.<#\;
function \GHC.Prim.-#\ ( a, b : \Int#\ ) return \Int#\ is
begin
return a - b;
end \GHC.Prim.-#\;
function \is_GHC.Types.False\ (a : \GHC.Types.Bool\) return boolean is
begin
return a = '0';
end \is_GHC.Types.False\;
function \is_GHC.Types.True\ (a : \GHC.Types.Bool\) return boolean is
begin
return a = '1';
end \is_GHC.Types.True\;
function \is_GHC.Types.I#\ (a : \GHC.Types.Int\) return boolean is
begin
return true; -- Trivial: there's only one constructor
end \is_GHC.Types.I#\;
procedure \expand_GHC.Types.I#\ (
input : in \GHC.Types.Int\;
field1 : out \Int#\) is
begin
field1 := input;
end \expand_GHC.Types.I#\;
end \Prim\;
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