blob: 424b728200b6fa386c77f881120038cc531478a7 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
# =============================================================================
# ____ _ _ ____ _ _ _ _ _ _ _
# _ __ _ _ / ___| | | | _ \| | | (_) |__ __ _| |__ __| | |
# | '_ \| | | | | _| |_| | | | | | | | | '_ \ / _` | '_ \ / _` | |
# | |_) | |_| | |_| | _ | |_| | |___ _| | | |_) | (_| | | | | (_| | |
# | .__/ \__, |\____|_| |_|____/|_____(_)_|_|_.__/ \__, |_| |_|\__,_|_|
# |_| |___/ |___/
# =============================================================================
# Authors: Patrick Lehmann
#
# Package module: Python binding and low-level API for shared library 'libghdl'.
#
# License:
# ============================================================================
# Copyright (C) 2019-2021 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.
#
# SPDX-License-Identifier: GPL-2.0-or-later
# ============================================================================
#
from typing import Callable, List
from pydecor import export
@export
def EnumLookupTable(cls) -> Callable:
"""
Decorator to precalculate a enum lookup table (LUT) for enum position to
enum literal name.
.. todo:: Make compatible to chained decorators
:param cls: Enumerator class for which a LUT shall be pre-calculated.
"""
def decorator(func) -> Callable:
def gen() -> List[str]:
d = [e for e in dir(cls) if e[0] != "_"]
res = [None] * len(d)
for e in d:
res[getattr(cls, e)] = e
return res
__lut = gen()
def wrapper(id: int) -> str:
# function that replaces the placeholder function
return __lut[id]
return wrapper
return decorator
|
