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
139
140
141
142
143
144
145
146
147
148
149
150
151
|
# Copyright 2013-2014 The Meson development team
# 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.
from . import mparser
from . import coredata
from . import mesonlib
import os, re
forbidden_option_names = coredata.get_builtin_options()
forbidden_prefixes = {'c_': True,
'cpp_': True,
'd_': True,
'rust_': True,
'fortran_': True,
'objc_': True,
'objcpp_': True,
'vala_': True,
'csharp_': True,
'swift_': True,
'b_': True,
}
def is_invalid_name(name):
if name in forbidden_option_names:
return True
pref = name.split('_')[0] + '_'
if pref in forbidden_prefixes:
return True
return False
class OptionException(mesonlib.MesonException):
pass
optname_regex = re.compile('[^a-zA-Z0-9_-]')
def StringParser(name, description, kwargs):
return coredata.UserStringOption(name, description,
kwargs.get('value', ''), kwargs.get('choices', []))
def BooleanParser(name, description, kwargs):
return coredata.UserBooleanOption(name, description, kwargs.get('value', True))
def ComboParser(name, description, kwargs):
if 'choices' not in kwargs:
raise OptionException('Combo option missing "choices" keyword.')
choices = kwargs['choices']
if not isinstance(choices, list):
raise OptionException('Combo choices must be an array.')
for i in choices:
if not isinstance(i, str):
raise OptionException('Combo choice elements must be strings.')
return coredata.UserComboOption(name, description, choices, kwargs.get('value', choices[0]))
option_types = {'string' : StringParser,
'boolean' : BooleanParser,
'combo' : ComboParser,
}
class OptionInterpreter:
def __init__(self, subproject, command_line_options):
self.options = {}
self.subproject = subproject
self.cmd_line_options = {}
for o in command_line_options:
(key, value) = o.split('=', 1)
self.cmd_line_options[key] = value
def process(self, option_file):
try:
with open(option_file, 'r', encoding='utf8') as f:
ast = mparser.Parser(f.read(), '').parse()
except mesonlib.MesonException as me:
me.file = option_file
raise me
if not isinstance(ast, mparser.CodeBlockNode):
e = OptionException('Option file is malformed.')
e.lineno = ast.lineno()
raise e
for cur in ast.lines:
try:
self.evaluate_statement(cur)
except Exception as e:
e.lineno = cur.lineno
e.colno = cur.colno
e.file = os.path.join('meson_options.txt')
raise e
def reduce_single(self, arg):
if isinstance(arg, str):
return arg
elif isinstance(arg, (mparser.StringNode, mparser.BooleanNode,
mparser.NumberNode)):
return arg.value
elif isinstance(arg, mparser.ArrayNode):
return [self.reduce_single(curarg) for curarg in arg.args.arguments]
else:
raise OptionException('Arguments may only be string, int, bool, or array of those.')
def reduce_arguments(self, args):
assert(isinstance(args, mparser.ArgumentNode))
if args.incorrect_order():
raise OptionException('All keyword arguments must be after positional arguments.')
reduced_pos = [self.reduce_single(arg) for arg in args.arguments]
reduced_kw = {}
for key in args.kwargs.keys():
if not isinstance(key, str):
raise OptionException('Keyword argument name is not a string.')
a = args.kwargs[key]
reduced_kw[key] = self.reduce_single(a)
return (reduced_pos, reduced_kw)
def evaluate_statement(self, node):
if not isinstance(node, mparser.FunctionNode):
raise OptionException('Option file may only contain option definitions')
func_name = node.func_name
if func_name != 'option':
raise OptionException('Only calls to option() are allowed in option files.')
(posargs, kwargs) = self.reduce_arguments(node.args)
if 'type' not in kwargs:
raise OptionException('Option call missing mandatory "type" keyword argument')
opt_type = kwargs['type']
if not opt_type in option_types:
raise OptionException('Unknown type %s.' % opt_type)
if len(posargs) != 1:
raise OptionException('Option() must have one (and only one) positional argument')
opt_name = posargs[0]
if not isinstance(opt_name, str):
raise OptionException('Positional argument must be a string.')
if optname_regex.search(opt_name) is not None:
raise OptionException('Option names can only contain letters, numbers or dashes.')
if is_invalid_name(opt_name):
raise OptionException('Option name %s is reserved.' % opt_name)
if self.subproject != '':
opt_name = self.subproject + ':' + opt_name
opt = option_types[opt_type](opt_name, kwargs.get('description', ''), kwargs)
if opt.description == '':
opt.description = opt_name
if opt_name in self.cmd_line_options:
opt.set_value(opt.parse_string(self.cmd_line_options[opt_name]))
self.options[opt_name] = opt
|
