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
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
|
import os
from clang.cindex import Config
if 'CLANG_LIBRARY_PATH' in os.environ:
Config.set_library_path(os.environ['CLANG_LIBRARY_PATH'])
from contextlib import contextmanager
import gc
import os
import sys
import tempfile
import unittest
from clang.cindex import CursorKind
from clang.cindex import Cursor
from clang.cindex import File
from clang.cindex import Index
from clang.cindex import SourceLocation
from clang.cindex import SourceRange
from clang.cindex import TranslationUnitSaveError
from clang.cindex import TranslationUnitLoadError
from clang.cindex import TranslationUnit
from .util import get_cursor
from .util import get_tu
from .util import skip_if_no_fspath
from .util import str_to_path
kInputsDir = os.path.join(os.path.dirname(__file__), 'INPUTS')
@contextmanager
def save_tu(tu):
"""Convenience API to save a TranslationUnit to a file.
Returns the filename it was saved to.
"""
with tempfile.NamedTemporaryFile() as t:
tu.save(t.name)
yield t.name
@contextmanager
def save_tu_pathlike(tu):
"""Convenience API to save a TranslationUnit to a file.
Returns the filename it was saved to.
"""
with tempfile.NamedTemporaryFile() as t:
tu.save(str_to_path(t.name))
yield t.name
class TestTranslationUnit(unittest.TestCase):
def test_spelling(self):
path = os.path.join(kInputsDir, 'hello.cpp')
tu = TranslationUnit.from_source(path)
self.assertEqual(tu.spelling, path)
def test_cursor(self):
path = os.path.join(kInputsDir, 'hello.cpp')
tu = get_tu(path)
c = tu.cursor
self.assertIsInstance(c, Cursor)
self.assertIs(c.kind, CursorKind.TRANSLATION_UNIT)
def test_parse_arguments(self):
path = os.path.join(kInputsDir, 'parse_arguments.c')
tu = TranslationUnit.from_source(path, ['-DDECL_ONE=hello', '-DDECL_TWO=hi'])
spellings = [c.spelling for c in tu.cursor.get_children()]
self.assertEqual(spellings[-2], 'hello')
self.assertEqual(spellings[-1], 'hi')
def test_reparse_arguments(self):
path = os.path.join(kInputsDir, 'parse_arguments.c')
tu = TranslationUnit.from_source(path, ['-DDECL_ONE=hello', '-DDECL_TWO=hi'])
tu.reparse()
spellings = [c.spelling for c in tu.cursor.get_children()]
self.assertEqual(spellings[-2], 'hello')
self.assertEqual(spellings[-1], 'hi')
def test_unsaved_files(self):
tu = TranslationUnit.from_source('fake.c', ['-I./'], unsaved_files = [
('fake.c', """
#include "fake.h"
int x;
int SOME_DEFINE;
"""),
('./fake.h', """
#define SOME_DEFINE y
""")
])
spellings = [c.spelling for c in tu.cursor.get_children()]
self.assertEqual(spellings[-2], 'x')
self.assertEqual(spellings[-1], 'y')
def test_unsaved_files_2(self):
if sys.version_info.major >= 3:
from io import StringIO
else:
from io import BytesIO as StringIO
tu = TranslationUnit.from_source('fake.c', unsaved_files = [
('fake.c', StringIO('int x;'))])
spellings = [c.spelling for c in tu.cursor.get_children()]
self.assertEqual(spellings[-1], 'x')
@skip_if_no_fspath
def test_from_source_accepts_pathlike(self):
tu = TranslationUnit.from_source(str_to_path('fake.c'), ['-Iincludes'], unsaved_files = [
(str_to_path('fake.c'), """
#include "fake.h"
int x;
int SOME_DEFINE;
"""),
(str_to_path('includes/fake.h'), """
#define SOME_DEFINE y
""")
])
spellings = [c.spelling for c in tu.cursor.get_children()]
self.assertEqual(spellings[-2], 'x')
self.assertEqual(spellings[-1], 'y')
def assert_normpaths_equal(self, path1, path2):
""" Compares two paths for equality after normalizing them with
os.path.normpath
"""
self.assertEqual(os.path.normpath(path1),
os.path.normpath(path2))
def test_includes(self):
def eq(expected, actual):
if not actual.is_input_file:
self.assert_normpaths_equal(expected[0], actual.source.name)
self.assert_normpaths_equal(expected[1], actual.include.name)
else:
self.assert_normpaths_equal(expected[1], actual.include.name)
src = os.path.join(kInputsDir, 'include.cpp')
h1 = os.path.join(kInputsDir, "header1.h")
h2 = os.path.join(kInputsDir, "header2.h")
h3 = os.path.join(kInputsDir, "header3.h")
inc = [(src, h1), (h1, h3), (src, h2), (h2, h3)]
tu = TranslationUnit.from_source(src)
for i in zip(inc, tu.get_includes()):
eq(i[0], i[1])
def test_inclusion_directive(self):
src = os.path.join(kInputsDir, 'include.cpp')
h1 = os.path.join(kInputsDir, "header1.h")
h2 = os.path.join(kInputsDir, "header2.h")
h3 = os.path.join(kInputsDir, "header3.h")
inc = [h1, h3, h2, h3, h1]
tu = TranslationUnit.from_source(src, options=TranslationUnit.PARSE_DETAILED_PROCESSING_RECORD)
inclusion_directive_files = [c.get_included_file().name for c in tu.cursor.get_children() if c.kind == CursorKind.INCLUSION_DIRECTIVE]
for i in zip(inc, inclusion_directive_files):
self.assert_normpaths_equal(i[0], i[1])
def test_save(self):
"""Ensure TranslationUnit.save() works."""
tu = get_tu('int foo();')
with save_tu(tu) as path:
self.assertTrue(os.path.exists(path))
self.assertGreater(os.path.getsize(path), 0)
@skip_if_no_fspath
def test_save_pathlike(self):
"""Ensure TranslationUnit.save() works with PathLike filename."""
tu = get_tu('int foo();')
with save_tu_pathlike(tu) as path:
self.assertTrue(os.path.exists(path))
self.assertGreater(os.path.getsize(path), 0)
def test_save_translation_errors(self):
"""Ensure that saving to an invalid directory raises."""
tu = get_tu('int foo();')
path = '/does/not/exist/llvm-test.ast'
self.assertFalse(os.path.exists(os.path.dirname(path)))
with self.assertRaises(TranslationUnitSaveError) as cm:
tu.save(path)
ex = cm.exception
expected = TranslationUnitSaveError.ERROR_UNKNOWN
self.assertEqual(ex.save_error, expected)
def test_load(self):
"""Ensure TranslationUnits can be constructed from saved files."""
tu = get_tu('int foo();')
self.assertEqual(len(tu.diagnostics), 0)
with save_tu(tu) as path:
self.assertTrue(os.path.exists(path))
self.assertGreater(os.path.getsize(path), 0)
tu2 = TranslationUnit.from_ast_file(filename=path)
self.assertEqual(len(tu2.diagnostics), 0)
foo = get_cursor(tu2, 'foo')
self.assertIsNotNone(foo)
# Just in case there is an open file descriptor somewhere.
del tu2
@skip_if_no_fspath
def test_load_pathlike(self):
"""Ensure TranslationUnits can be constructed from saved files -
PathLike variant."""
tu = get_tu('int foo();')
self.assertEqual(len(tu.diagnostics), 0)
with save_tu(tu) as path:
tu2 = TranslationUnit.from_ast_file(filename=str_to_path(path))
self.assertEqual(len(tu2.diagnostics), 0)
foo = get_cursor(tu2, 'foo')
self.assertIsNotNone(foo)
# Just in case there is an open file descriptor somewhere.
del tu2
def test_index_parse(self):
path = os.path.join(kInputsDir, 'hello.cpp')
index = Index.create()
tu = index.parse(path)
self.assertIsInstance(tu, TranslationUnit)
def test_get_file(self):
"""Ensure tu.get_file() works appropriately."""
tu = get_tu('int foo();')
f = tu.get_file('t.c')
self.assertIsInstance(f, File)
self.assertEqual(f.name, 't.c')
with self.assertRaises(Exception):
f = tu.get_file('foobar.cpp')
@skip_if_no_fspath
def test_get_file_pathlike(self):
"""Ensure tu.get_file() works appropriately with PathLike filenames."""
tu = get_tu('int foo();')
f = tu.get_file(str_to_path('t.c'))
self.assertIsInstance(f, File)
self.assertEqual(f.name, 't.c')
with self.assertRaises(Exception):
f = tu.get_file(str_to_path('foobar.cpp'))
def test_get_source_location(self):
"""Ensure tu.get_source_location() works."""
tu = get_tu('int foo();')
location = tu.get_location('t.c', 2)
self.assertIsInstance(location, SourceLocation)
self.assertEqual(location.offset, 2)
self.assertEqual(location.file.name, 't.c')
location = tu.get_location('t.c', (1, 3))
self.assertIsInstance(location, SourceLocation)
self.assertEqual(location.line, 1)
self.assertEqual(location.column, 3)
self.assertEqual(location.file.name, 't.c')
def test_get_source_range(self):
"""Ensure tu.get_source_range() works."""
tu = get_tu('int foo();')
r = tu.get_extent('t.c', (1,4))
self.assertIsInstance(r, SourceRange)
self.assertEqual(r.start.offset, 1)
self.assertEqual(r.end.offset, 4)
self.assertEqual(r.start.file.name, 't.c')
self.assertEqual(r.end.file.name, 't.c')
r = tu.get_extent('t.c', ((1,2), (1,3)))
self.assertIsInstance(r, SourceRange)
self.assertEqual(r.start.line, 1)
self.assertEqual(r.start.column, 2)
self.assertEqual(r.end.line, 1)
self.assertEqual(r.end.column, 3)
self.assertEqual(r.start.file.name, 't.c')
self.assertEqual(r.end.file.name, 't.c')
start = tu.get_location('t.c', 0)
end = tu.get_location('t.c', 5)
r = tu.get_extent('t.c', (start, end))
self.assertIsInstance(r, SourceRange)
self.assertEqual(r.start.offset, 0)
self.assertEqual(r.end.offset, 5)
self.assertEqual(r.start.file.name, 't.c')
self.assertEqual(r.end.file.name, 't.c')
def test_get_tokens_gc(self):
"""Ensures get_tokens() works properly with garbage collection."""
tu = get_tu('int foo();')
r = tu.get_extent('t.c', (0, 10))
tokens = list(tu.get_tokens(extent=r))
self.assertEqual(tokens[0].spelling, 'int')
gc.collect()
self.assertEqual(tokens[0].spelling, 'int')
del tokens[1]
gc.collect()
self.assertEqual(tokens[0].spelling, 'int')
# May trigger segfault if we don't do our job properly.
del tokens
gc.collect()
gc.collect() # Just in case.
def test_fail_from_source(self):
path = os.path.join(kInputsDir, 'non-existent.cpp')
try:
tu = TranslationUnit.from_source(path)
except TranslationUnitLoadError:
tu = None
self.assertEqual(tu, None)
def test_fail_from_ast_file(self):
path = os.path.join(kInputsDir, 'non-existent.ast')
try:
tu = TranslationUnit.from_ast_file(path)
except TranslationUnitLoadError:
tu = None
self.assertEqual(tu, None)
|
