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1 | #!/usr/bin/env python |
2 | ||
3 | # Copyright 2016 The Fuchsia Authors. All rights reserved. | |
4 | # Use of this source code is governed by a BSD-style license that can be | |
5 | # found in the LICENSE file. | |
6 | ||
7 | # A tool for autogenerating the mapping between Status and mx_status_t | |
8 | # Usage: python gen_status.py magenta/system/public/magenta/errors.h {sys,enum,match} | |
9 | import re | |
10 | import sys | |
11 | ||
12 | status_re = re.compile('#define\s+(MX_\w+)\s+\((\-?\d+)\)$') | |
13 | ||
14 | def parse(in_filename): | |
15 | result = [] | |
16 | for line in file(in_filename): | |
17 | m = status_re.match(line) | |
18 | if m: | |
19 | result.append((m.group(1), int(m.group(2)))) | |
20 | return result | |
21 | ||
22 | def to_snake_case(name): | |
23 | result = [] | |
24 | for element in name.split('_'): | |
25 | result.append(element[0] + element[1:].lower()) | |
26 | return ''.join(result) | |
27 | ||
28 | def out(style, l): | |
29 | print('// Auto-generated using tools/gen_status.py') | |
30 | longest = max(len(name) for (name, num) in l) | |
31 | if style == 'sys': | |
32 | for (name, num) in l: | |
33 | print('pub const %s : mx_status_t = %d;' % (name.ljust(longest), num)) | |
34 | if style == 'enum': | |
35 | print('pub enum Status {') | |
36 | for (name, num) in l: | |
37 | print(' %s = %d,' % (to_snake_case(name[3:]), num)) | |
38 | print(''); | |
39 | print(' /// Any mx_status_t not in the set above will map to the following:') | |
40 | print(' UnknownOther = -32768,') | |
41 | print('}') | |
42 | if style == 'match': | |
43 | for (name, num) in l: | |
44 | print(' sys::%s => Status::%s,' % (name, to_snake_case(name[3:]))) | |
45 | print(' _ => Status::UnknownOther,') | |
46 | ||
47 | ||
48 | l = parse(sys.argv[1]) | |
49 | out(sys.argv[2], l) |