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
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
|
# -*- Mode: Python -*-
# GObject-Introspection - a framework for introspecting GObject libraries
# Copyright (C) 2010 Red Hat, Inc.
# Copyright (C) 2010 Johan Dahlin
#
# This program 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
# of the License, or (at your option) any later version.
#
# This program 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 this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301, USA.
#
import os
import sys
import operator
from . import utils
(WARNING,
ERROR,
FATAL) = range(3)
class Position(object):
"""
Represents a position in the source file which we
want to inform about.
"""
__slots__ = ('filename', 'line', 'column', 'is_typedef')
def __init__(self, filename=None, line=None, column=None, is_typedef=False):
self.filename = filename
self.line = line
self.column = column
self.is_typedef = is_typedef
def _compare(self, other, op):
return op((self.filename, self.line, self.column),
(other.filename, other.line, other.column))
def __lt__(self, other):
return self._compare(other, operator.lt)
def __gt__(self, other):
return self._compare(other, operator.gt)
def __ge__(self, other):
return self._compare(other, operator.ge)
def __le__(self, other):
return self._compare(other, operator.le)
def __eq__(self, other):
return self._compare(other, operator.eq)
def __ne__(self, other):
return self._compare(other, operator.ne)
def __hash__(self):
return hash((self.filename, self.line, self.column))
def __repr__(self):
return '<Position %s:%d:%d>' % (os.path.basename(self.filename),
self.line or -1,
self.column or -1)
def format(self, cwd):
filename = os.path.relpath(os.path.realpath(self.filename),
os.path.realpath(cwd))
if self.column is not None:
return '%s:%d:%d' % (filename, self.line, self.column)
elif self.line is not None:
return '%s:%d' % (filename, self.line, )
else:
return '%s:' % (filename, )
class MessageLogger(object):
_instance = None
def __init__(self, namespace=None, output=None):
if output is None:
output = sys.stderr
self._cwd = os.getcwd()
self._output = output
self._namespace = namespace
self._enable_warnings = False
self._warning_count = 0
@classmethod
def get(cls, *args, **kwargs):
if cls._instance is None:
cls._instance = cls(*args, **kwargs)
return cls._instance
def enable_warnings(self, value):
self._enable_warnings = bool(value)
def get_warning_count(self):
return self._warning_count
def log(self, log_type, text, positions=None, prefix=None, marker_pos=None, marker_line=None):
"""
Log a warning, using optional file positioning information.
If the warning is related to a ast.Node type, see log_node().
"""
utils.break_on_debug_flag('warning')
self._warning_count += 1
if not self._enable_warnings:
return
if type(positions) == set:
positions = list(positions)
if isinstance(positions, Position):
positions = [positions]
if not positions:
positions = [Position('<unknown>')]
for position in positions[:-1]:
self._output.write("%s:\n" % (position.format(cwd=self._cwd), ))
last_position = positions[-1].format(cwd=self._cwd)
if log_type == WARNING:
error_type = "Warning"
elif log_type == ERROR:
error_type = "Error"
elif log_type == FATAL:
error_type = "Fatal"
if marker_pos is not None and marker_line is not None:
text = '%s\n%s\n%s' % (text, marker_line, ' ' * marker_pos + '^')
if prefix:
if self._namespace:
text = ('%s: %s: %s: %s: %s\n' % (last_position, error_type,
self._namespace.name, prefix, text))
else:
text = ('%s: %s: %s: %s\n' % (last_position, error_type,
prefix, text))
else:
if self._namespace:
text = ('%s: %s: %s: %s\n' % (last_position, error_type,
self._namespace.name, text))
else:
text = ('%s: %s: %s\n' % (last_position, error_type, text))
self._output.write(text)
if log_type == FATAL:
utils.break_on_debug_flag('fatal')
raise SystemExit(text)
def log_node(self, log_type, node, text, context=None, positions=None):
"""
Log a warning, using information about file positions from
the given node. The optional context argument, if given, should be
another ast.Node type which will also be displayed. If no file position
information is available from the node, the position data from the
context will be used.
"""
if positions:
pass
elif getattr(node, 'file_positions', None):
positions = node.file_positions
elif context and context.file_positions:
positions = context.file_positions
else:
positions = set()
if context:
text = "%s: %s" % (getattr(context, 'symbol', context.name), text)
elif not positions and hasattr(node, 'name'):
text = "(%s)%s: %s" % (node.__class__.__name__, node.name, text)
self.log(log_type, text, positions)
def log_symbol(self, log_type, symbol, text):
"""Log a warning in the context of the given symbol."""
self.log(log_type, text, symbol.position,
prefix="symbol='%s'" % (symbol.ident, ))
def log_node(log_type, node, text, context=None, positions=None):
ml = MessageLogger.get()
ml.log_node(log_type, node, text, context=context, positions=positions)
def warn(text, positions=None, prefix=None, marker_pos=None, marker_line=None):
ml = MessageLogger.get()
ml.log(WARNING, text, positions, prefix, marker_pos, marker_line)
def warn_node(node, text, context=None, positions=None):
log_node(WARNING, node, text, context=context, positions=positions)
def error_node(node, text, context=None, positions=None):
log_node(ERROR, node, text, context=context, positions=positions)
def warn_symbol(symbol, text):
ml = MessageLogger.get()
ml.log_symbol(WARNING, symbol, text)
def error(text, positions=None, prefix=None, marker_pos=None, marker_line=None):
ml = MessageLogger.get()
ml.log(ERROR, text, positions, prefix, marker_pos, marker_line)
def fatal(text, positions=None, prefix=None, marker_pos=None, marker_line=None):
ml = MessageLogger.get()
ml.log(FATAL, text, positions, prefix, marker_pos, marker_line)
|
