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
|
#!/usr/bin/env python3
from __future__ import print_function
from collections import OrderedDict
from shutil import copyfile
import argparse
import json
import os
import re
import subprocess
import sys
import tempfile
def normalize(dict_var):
for k, v in dict_var.items():
if isinstance(v, OrderedDict):
normalize(v)
elif isinstance(v, list):
for e in v:
if isinstance(e, OrderedDict):
normalize(e)
elif type(v) is str:
if v != "0x0" and re.match(r"0x[0-9A-Fa-f]+", v):
dict_var[k] = '0x{{.*}}'
elif os.path.isfile(v):
dict_var[k] = '{{.*}}'
else:
splits = (v.split(' '))
out_splits = []
for split in splits:
inner_splits = split.rsplit(':',2)
if os.path.isfile(inner_splits[0]):
out_splits.append(
'{{.*}}:%s:%s'
%(inner_splits[1],
inner_splits[2]))
continue
out_splits.append(split)
dict_var[k] = ' '.join(out_splits)
def filter_json(dict_var, filters, out):
for k, v in dict_var.items():
if type(v) is str:
if v in filters:
out.append(dict_var)
break
elif isinstance(v, OrderedDict):
filter_json(v, filters, out)
elif isinstance(v, list):
for e in v:
if isinstance(e, OrderedDict):
filter_json(e, filters, out)
def default_clang_path():
guessed_clang = os.path.join(os.path.dirname(__file__), "clang")
if os.path.isfile(guessed_clang):
return guessed_clang
return None
def main():
parser = argparse.ArgumentParser()
parser.add_argument("--clang", help="The clang binary (could be a relative or absolute path)",
action="store", default=default_clang_path())
parser.add_argument("--source", help="the source file(s). Without --update, the command used to generate the JSON "
"will be of the format <clang> -cc1 -ast-dump=json <opts> <source>",
action="store", nargs=argparse.ONE_OR_MORE, required=True)
parser.add_argument("--filters", help="comma separated list of AST filters. Ex: --filters=TypedefDecl,BuiltinType",
action="store", default='')
update_or_generate_group = parser.add_mutually_exclusive_group()
update_or_generate_group.add_argument("--update", help="Update the file in-place", action="store_true")
update_or_generate_group.add_argument("--opts", help="other options",
action="store", default='', type=str)
parser.add_argument("--update-manual", help="When using --update, also update files that do not have the "
"autogenerated disclaimer", action="store_true")
args = parser.parse_args()
if not args.source:
sys.exit("Specify the source file to give to clang.")
clang_binary = os.path.abspath(args.clang)
if not os.path.isfile(clang_binary):
sys.exit("clang binary specified not present.")
for src in args.source:
process_file(src, clang_binary, cmdline_filters=args.filters,
cmdline_opts=args.opts, do_update=args.update,
force_update=args.update_manual)
def process_file(source_file, clang_binary, cmdline_filters, cmdline_opts,
do_update, force_update):
note_firstline = "// NOTE: CHECK lines have been autogenerated by " \
"gen_ast_dump_json_test.py"
filters_line_prefix = "// using --filters="
note = note_firstline
cmd = [clang_binary, "-cc1"]
if do_update:
# When updating the first line of the test must be a RUN: line
with open(source_file, "r") as srcf:
first_line = srcf.readline()
found_autogenerated_line = False
filters_line = None
for i, line in enumerate(srcf.readlines()):
if found_autogenerated_line:
# print("Filters line: '", line.rstrip(), "'", sep="")
if line.startswith(filters_line_prefix):
filters_line = line[len(filters_line_prefix):].rstrip()
break
if line.startswith(note_firstline):
found_autogenerated_line = True
# print("Found autogenerated disclaimer at line", i + 1)
if not found_autogenerated_line and not force_update:
print("Not updating", source_file, "since it is not autogenerated.",
file=sys.stderr)
return
if not cmdline_filters and filters_line:
cmdline_filters = filters_line
print("Inferred filters as '" + cmdline_filters + "'")
if "RUN: %clang_cc1 " not in first_line:
sys.exit("When using --update the first line of the input file must contain RUN: %clang_cc1")
clang_start = first_line.find("%clang_cc1") + len("%clang_cc1")
file_check_idx = first_line.rfind("| FileCheck")
if file_check_idx:
dump_cmd = first_line[clang_start:file_check_idx]
else:
dump_cmd = first_line[clang_start:]
print("Inferred run arguments as '", dump_cmd, "'", sep="")
options = dump_cmd.split()
if "-ast-dump=json" not in options:
sys.exit("ERROR: RUN: line does not contain -ast-dump=json")
if "%s" not in options:
sys.exit("ERROR: RUN: line does not contain %s")
options.remove("%s")
else:
options = cmdline_opts.split()
options.append("-ast-dump=json")
cmd.extend(options)
using_ast_dump_filter = any('ast-dump-filter' in arg for arg in cmd)
cmd.append(source_file)
print("Will run", cmd)
filters = set()
if cmdline_filters:
note += "\n" + filters_line_prefix + cmdline_filters
filters = set(cmdline_filters.split(','))
print("Will use the following filters:", filters)
try:
json_str = subprocess.check_output(cmd).decode()
except Exception as ex:
print("The clang command failed with %s" % ex)
return -1
out_asts = []
if using_ast_dump_filter:
# If we're using a filter, then we might have multiple JSON objects
# in the output. To parse each out, we use a manual JSONDecoder in
# "raw" mode and update our location in the string based on where the
# last document ended.
decoder = json.JSONDecoder(object_hook=OrderedDict)
doc_start = 0
prev_end = 0
while True:
try:
prev_end = doc_start
(j, doc_start) = decoder.raw_decode(json_str[doc_start:])
doc_start += prev_end + 1
normalize(j)
out_asts.append(j)
except:
break
else:
j = json.loads(json_str, object_pairs_hook=OrderedDict)
normalize(j)
if len(filters) == 0:
out_asts.append(j)
else:
filter_json(j, filters, out_asts)
with tempfile.NamedTemporaryFile("w", delete=False) as f:
with open(source_file, "r") as srcf:
for line in srcf.readlines():
# copy up to the note:
if line.rstrip() == note_firstline:
break
f.write(line)
f.write(note + "\n")
for out_ast in out_asts:
append_str = json.dumps(out_ast, indent=1, ensure_ascii=False)
out_str = '\n\n'
out_str += "// CHECK-NOT: {{^}}Dumping\n"
index = 0
for append_line in append_str.splitlines()[2:]:
if index == 0:
out_str += '// CHECK: %s\n' %(append_line.rstrip())
index += 1
else:
out_str += '// CHECK-NEXT: %s\n' %(append_line.rstrip())
f.write(out_str)
f.flush()
f.close()
if do_update:
print("Updating json appended source file to %s." % source_file)
copyfile(f.name, source_file)
else:
partition = source_file.rpartition('.')
dest_path = '%s-json%s%s' % (partition[0], partition[1], partition[2])
print("Writing json appended source file to %s." % dest_path)
copyfile(f.name, dest_path)
os.remove(f.name)
return 0
if __name__ == '__main__':
main()
|
