You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
172 lines
4.9 KiB
172 lines
4.9 KiB
library ieee;
|
|
use ieee.std_logic_1164.all;
|
|
|
|
|
|
|
|
package DictP is
|
|
|
|
|
|
type t_dict is protected
|
|
|
|
procedure set (key : in string; data : in std_logic_vector);
|
|
procedure get (key : in string; data : out std_logic_vector; err : out boolean);
|
|
procedure del (key : in string; err : out boolean);
|
|
procedure init (logging : in boolean := false);
|
|
procedure clear (err : out boolean);
|
|
impure function hasKey (key : string) return boolean;
|
|
impure function size return natural;
|
|
|
|
end protected t_dict;
|
|
|
|
|
|
end package DictP;
|
|
|
|
|
|
|
|
package body DictP is
|
|
|
|
|
|
type t_dict is protected body
|
|
|
|
|
|
type t_entry;
|
|
type t_entry_ptr is access t_entry;
|
|
|
|
type t_key_ptr is access string;
|
|
type t_data_ptr is access std_logic_vector;
|
|
|
|
type t_entry is record
|
|
key : t_key_ptr;
|
|
data : t_data_ptr;
|
|
last_entry : t_entry_ptr;
|
|
next_entry : t_entry_ptr;
|
|
end record t_entry;
|
|
|
|
variable v_head : t_entry_ptr := null;
|
|
variable v_size : natural := 0;
|
|
variable v_logging : boolean := false;
|
|
|
|
impure function find (key : string) return t_entry_ptr;
|
|
|
|
procedure set (key : in string; data : in std_logic_vector) is
|
|
variable v_entry : t_entry_ptr := find(key);
|
|
begin
|
|
if (v_entry = null) then
|
|
if (v_head /= null) then
|
|
v_entry := new t_entry;
|
|
v_entry.key := new string'(key);
|
|
v_entry.data := new std_logic_vector'(data);
|
|
v_entry.last_entry := v_head;
|
|
v_entry.next_entry := null;
|
|
v_head := v_entry;
|
|
v_head.last_entry.next_entry := v_head;
|
|
else
|
|
v_head := new t_entry;
|
|
v_head.key := new string'(key);
|
|
v_head.data := new std_logic_vector'(data);
|
|
v_head.last_entry := null;
|
|
v_head.next_entry := null;
|
|
end if;
|
|
if (v_logging) then
|
|
report t_dict'instance_name & ": Add key " & key & " with data 0x" & to_hstring(data);
|
|
end if;
|
|
v_size := v_size + 1;
|
|
else
|
|
v_entry.data.all := data;
|
|
if (v_logging) then
|
|
report t_dict'instance_name & ": Set key " & key & " to 0x" & to_hstring(data);
|
|
end if;
|
|
end if;
|
|
end procedure set;
|
|
|
|
procedure get (key : in string; data : out std_logic_vector; err : out boolean) is
|
|
variable v_entry : t_entry_ptr := find(key);
|
|
begin
|
|
if(v_entry /= null) then
|
|
data := v_entry.data.all;
|
|
if v_logging then
|
|
report t_dict'instance_name & ": Got key " & key & " with data 0x" & to_hstring(v_entry.data.all);
|
|
end if;
|
|
err := false;
|
|
else
|
|
err := true;
|
|
end if;
|
|
end procedure get;
|
|
|
|
procedure del (key : in string; err : out boolean) is
|
|
variable v_entry : t_entry_ptr := find(key);
|
|
begin
|
|
if (v_entry /= null) then
|
|
-- remove head entry
|
|
if(v_entry.next_entry = null and v_entry.last_entry /= null) then
|
|
v_entry.last_entry.next_entry := null;
|
|
v_head := v_entry.last_entry;
|
|
-- remove start entry
|
|
elsif(v_entry.next_entry /= null and v_entry.last_entry = null) then
|
|
v_entry.next_entry.last_entry := null;
|
|
v_entry.next_entry.last_entry := v_entry.last_entry;
|
|
-- remove from between
|
|
elsif(v_entry.next_entry /= null and v_entry.last_entry /= null) then
|
|
v_entry.last_entry.next_entry := v_entry.next_entry;
|
|
v_entry.next_entry.last_entry := v_entry.last_entry;
|
|
end if;
|
|
deallocate(v_entry.key);
|
|
deallocate(v_entry.data);
|
|
deallocate(v_entry);
|
|
v_size := v_size - 1;
|
|
err := false;
|
|
else
|
|
err := true;
|
|
end if;
|
|
end procedure del;
|
|
|
|
impure function find (key : string) return t_entry_ptr is
|
|
variable v_entry : t_entry_ptr := v_head;
|
|
begin
|
|
while (v_entry /= null) loop
|
|
if(v_entry.key.all = key) then
|
|
return v_entry;
|
|
end if;
|
|
v_entry := v_entry.last_entry;
|
|
end loop;
|
|
return null;
|
|
end function find;
|
|
|
|
procedure clear (err : out boolean) is
|
|
variable v_entry : t_entry_ptr := v_head;
|
|
variable v_entry_d : t_entry_ptr;
|
|
variable v_err : boolean;
|
|
begin
|
|
err := false;
|
|
while (v_entry /= null) loop
|
|
v_entry_d := v_entry;
|
|
del(v_entry_d.key.all, v_err);
|
|
if v_err then
|
|
err := true;
|
|
return;
|
|
else
|
|
v_entry := v_entry.last_entry;
|
|
end if;
|
|
end loop;
|
|
end procedure clear;
|
|
|
|
impure function hasKey (key : string) return boolean is
|
|
begin
|
|
return find(key) /= null;
|
|
end function hasKey;
|
|
|
|
impure function size return natural is
|
|
begin
|
|
return v_size;
|
|
end function size;
|
|
|
|
procedure init (logging : in boolean := false) is
|
|
begin
|
|
v_logging := logging;
|
|
end procedure init;
|
|
|
|
|
|
end protected body t_dict;
|
|
|
|
|
|
end package body DictP;
|