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
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
|
#!/usr/bin/python3
# Copyright 2014 Jussi Pakkanen
# 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
# http://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.
import sys, os
import re
class Token:
def __init__(self, tid, value):
self.tid = tid
self.value = value
self.lineno = 0
self.colno = 0
class Statement():
def __init__(self, name, args):
self.name = name
self.args = args
class Lexer:
def __init__(self):
self.token_specification = [
# Need to be sorted longest to shortest.
('ignore', re.compile(r'[ \t]')),
('id', re.compile('[-+_0-9a-z/A-Z.@]+')),
('eol', re.compile(r'\n')),
('comment', re.compile(r'\#.*')),
('lparen', re.compile(r'\(')),
('rparen', re.compile(r'\)')),
('string', re.compile('"[^"]*?"')),
('varexp', re.compile(r'\${[-_0-9a-z/A-Z.]+}')),
]
def lex(self, code):
lineno = 1
line_start = 0
loc = 0;
col = 0
while(loc < len(code)):
matched = False
value = None
for (tid, reg) in self.token_specification:
mo = reg.match(code, loc)
if mo:
curline = lineno
col = mo.start()-line_start
matched = True
loc = mo.end()
match_text = mo.group()
if tid == 'ignore' or tid == 'comment':
pass
elif tid == 'lparen':
yield(Token('lparen', '('))
elif tid == 'rparen':
yield(Token('rparen', ')'))
elif tid == 'string':
yield(Token('string', match_text[1:-1]))
elif tid == 'id':
yield(Token('id', match_text))
elif tid == 'eol':
#yield('eol')
pass
elif tid == 'varexp':
yield(Token('varexp', match_text[2:-1]))
else:
raise RuntimeError('Wharrgarbl')
break
if not matched:
raise RuntimeError('Lexer got confused %d %d' % (lineno, col))
class Parser():
def __init__(self, code):
self.stream = Lexer().lex(code)
self.getsym()
def getsym(self):
try:
self.current = next(self.stream)
except StopIteration:
self.current = Token('eof', '')
def accept(self, s):
if self.current.tid == s:
self.getsym()
return True
return False
def expect(self, s):
if self.accept(s):
return True
raise RuntimeError('Expecting %s got %s.' % (s, self.current.tid), self.current.lineno, self.current.colno)
def statement(self):
name = self.current.value
self.accept('id')
args = []
self.expect('lparen')
arg = self.current.value
while self.accept('string') or self.accept('varexp') or\
self.accept('id'):
args.append(arg)
arg = self.current.value
self.expect('rparen')
return Statement(name, args)
def parse(self):
while not self.accept('eof'):
yield(self.statement())
def convert(cmake_root):
cfile = os.path.join(cmake_root, 'CMakeLists.txt')
cmakecode = open(cfile).read()
p = Parser(cmakecode)
for t in p.parse():
if t.name == 'add_subdirectory':
print('\nRecursing to subdir', t.args[0], '\n')
convert(os.path.join(cmake_root, t.args[0]))
else:
print(t.name, t.args)
if __name__ == '__main__':
if len(sys.argv) != 2:
print(sys.argv[0], '<CMake project root>')
sys.exit(1)
convert(sys.argv[1])
|
