Python code coverage for Lib/json/scanner.py

#	count	content
1	n/a	"""JSON token scanner
2	n/a	"""
3	n/a	import re
4	n/a	try:
5	n/a	from _json import make_scanner as c_make_scanner
6	n/a	except ImportError:
7	n/a	c_make_scanner = None
8	n/a
9	n/a	__all__ = ['make_scanner']
10	n/a
11	n/a	NUMBER_RE = re.compile(
12	n/a	r'(-?(?:0\|[1-9]\d*))(\.\d+)?([eE][-+]?\d+)?',
13	n/a	(re.VERBOSE \| re.MULTILINE \| re.DOTALL))
14	n/a
15	n/a	def py_make_scanner(context):
16	n/a	parse_object = context.parse_object
17	n/a	parse_array = context.parse_array
18	n/a	parse_string = context.parse_string
19	n/a	match_number = NUMBER_RE.match
20	n/a	strict = context.strict
21	n/a	parse_float = context.parse_float
22	n/a	parse_int = context.parse_int
23	n/a	parse_constant = context.parse_constant
24	n/a	object_hook = context.object_hook
25	n/a	object_pairs_hook = context.object_pairs_hook
26	n/a	memo = context.memo
27	n/a
28	n/a	def _scan_once(string, idx):
29	n/a	try:
30	n/a	nextchar = string[idx]
31	n/a	except IndexError:
32	n/a	raise StopIteration(idx)
33	n/a
34	n/a	if nextchar == '"':
35	n/a	return parse_string(string, idx + 1, strict)
36	n/a	elif nextchar == '{':
37	n/a	return parse_object((string, idx + 1), strict,
38	n/a	_scan_once, object_hook, object_pairs_hook, memo)
39	n/a	elif nextchar == '[':
40	n/a	return parse_array((string, idx + 1), _scan_once)
41	n/a	elif nextchar == 'n' and string[idx:idx + 4] == 'null':
42	n/a	return None, idx + 4
43	n/a	elif nextchar == 't' and string[idx:idx + 4] == 'true':
44	n/a	return True, idx + 4
45	n/a	elif nextchar == 'f' and string[idx:idx + 5] == 'false':
46	n/a	return False, idx + 5
47	n/a
48	n/a	m = match_number(string, idx)
49	n/a	if m is not None:
50	n/a	integer, frac, exp = m.groups()
51	n/a	if frac or exp:
52	n/a	res = parse_float(integer + (frac or '') + (exp or ''))
53	n/a	else:
54	n/a	res = parse_int(integer)
55	n/a	return res, m.end()
56	n/a	elif nextchar == 'N' and string[idx:idx + 3] == 'NaN':
57	n/a	return parse_constant('NaN'), idx + 3
58	n/a	elif nextchar == 'I' and string[idx:idx + 8] == 'Infinity':
59	n/a	return parse_constant('Infinity'), idx + 8
60	n/a	elif nextchar == '-' and string[idx:idx + 9] == '-Infinity':
61	n/a	return parse_constant('-Infinity'), idx + 9
62	n/a	else:
63	n/a	raise StopIteration(idx)
64	n/a
65	n/a	def scan_once(string, idx):
66	n/a	try:
67	n/a	return _scan_once(string, idx)
68	n/a	finally:
69	n/a	memo.clear()
70	n/a
71	n/a	return _scan_once
72	n/a
73	n/a	make_scanner = c_make_scanner or py_make_scanner