test262/tools/lint/lib/whitelist.py

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def parse(handle):
'''Parse the contents of the provided file descriptor as a linting
whitelist file. Return a dictionary whose keys are test file names and
whose values are Python sets of "Check" ID strings.'''
whitelist = dict()
for line in handle:
if line.startswith('#'):
continue
parts = line.split()
file_name = parts[0]
check_names = set(parts[1:])
assert file_name not in whitelist, (
'Whitelist should have a single entry for each file')
assert len(check_names) > 0, (
'Each whitelist entry should specify at least on check')
whitelist[file_name] = check_names
return whitelist