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#!/usr/bin/env python
from __future__ import print_function
from collections import OrderedDict
from shutil import copyfile
import argparse
import json
import os
import pprint
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 unicode:
st = v.encode('utf-8')
if v != "0x0" and re.match(r"0x[0-9A-Fa-f]+", v):
dict_var[k] = u'0x{{.*}}'
elif os.path.isfile(v):
dict_var[k] = u'{{.*}}'
else:
splits = (v.split(u' '))
out_splits = []
for split in splits:
inner_splits = split.rsplit(u':',2)
if os.path.isfile(inner_splits[0]):
out_splits.append(
u'{{.*}}:%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 unicode:
st = v.encode('utf-8')
if st 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 main():
parser = argparse.ArgumentParser()
parser.add_argument("--clang", help="The clang binary (could be a relative or absolute path)",
action="store", required=True)
parser.add_argument("--source", help="the source file. Command used to generate the json will be of the format <clang> -cc1 -ast-dump=json <opts> <source>",
action="store", 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)
args = parser.parse_args()
if not args.source:
print("Specify the source file to give to clang.")
return -1
clang_binary = os.path.abspath(args.clang)
if not os.path.isfile(clang_binary):
print("clang binary specified not present.")
return -1
filters = set(args.filters.split(',')) if args.filters else set()
note = "// NOTE: CHECK lines have been autogenerated by " \
"gen_ast_dump_json_test.py"
if (args.filters):
note += "\n// using --filters=" + args.filters
cmd = [clang_binary, "-cc1"]
if args.update:
# When updating the first line of the test must be a RUN: line
with open(args.source, "r") as srcf:
first_line = srcf.readline()
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 = args.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(args.source)
print("Will run", cmd)
try:
json_str = subprocess.check_output(cmd)
except Exception as ex:
print("The clang command failed with %s" % ex)
return -1
out_asts = []
if using_ast_dump_filter:
splits = re.split('Dumping .*:\n', json_str)
if len(splits) > 1:
for split in splits[1:]:
j = json.loads(split.decode('utf-8'), object_pairs_hook=OrderedDict)
normalize(j)
out_asts.append(j)
else:
j = json.loads(json_str.decode('utf-8'), object_pairs_hook=OrderedDict)
normalize(j)
if len(filters) == 0:
out_asts.append(j)
else:
#assert using_ast_dump_filter is False,\
# "Does not support using compiler's ast-dump-filter "\
# "and the tool's filter option at the same time yet."
filter_json(j, filters, out_asts)
with tempfile.NamedTemporaryFile("w") as f:
with open(args.source, "r") as srcf:
for line in srcf.readlines():
# copy up to the note:
if line.rstrip() == note:
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'
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()
if args.update:
print("Updating json appended source file to %s." % args.source)
copyfile(f.name, args.source)
else:
partition = args.source.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)
return 0
if __name__ == '__main__':
main()
|
