How to use py_scanstring method in autotest

Best Python code snippet using autotest_python

json_util.py

Source:json_util.py Github

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1# coding=utf82import re3import json.decoder4from collections import namedtuple5from json.decoder import JSONDecoder6from json.scanner import py_make_scanner7from json.decoder import py_scanstring8class JSONDecodeError(object):9 def __init__(self, parser, message):10 self.message = message11 self.parser = parser12 def __eq__(self, err):13 return err.parser == self.parser and self.message in err.message14class errors(object):15 StringInvalidUXXXXEscape = JSONDecodeError("py_scanstring", "Invalid \\uXXXX escape")16 # 2 different case17 StringUnterminatedString = JSONDecodeError("py_scanstring", "Unterminated string starting at")18 StringInvalidControlCharacter = JSONDecodeError("py_scanstring", "Invalid control character")19 StringInvalidEscape = JSONDecodeError("py_scanstring", "Invalid \\escape")20 ObjectExceptColon = JSONDecodeError("JSONObject", "Expecting ':' delimiter")21 ObjectExceptObject = JSONDecodeError("JSONObject", "Expecting object")22 # 2 different case23 ObjectExceptKey = JSONDecodeError("JSONObject", "Expecting property name enclosed in double quotes")24 ObjectExceptComma = JSONDecodeError("JSONObject", "Expecting ',' delimiter")25 ArrayExceptObject = JSONDecodeError("JSONArray", "Expecting object")26 ArrayExceptComma = JSONDecodeError("JSONArray", "Expecting ',' delimiter")27 @classmethod28 def get_decode_error(cls, parser, message):29 err = JSONDecodeError(parser, message)30 for _, value in cls.__dict__.items():31 if isinstance(value, JSONDecodeError):32 if err == value:33 return value34 return None35 """36 01 先不看,不研究37 02 badcase: " --> "" success38 03 控制符 pass39 04 unicode \\u 的 pass40 05 同上41 06 object 后面没有跟随 " , badcase: {abc":1} --> {"abc":1}42 07 object key 后面没有 : , badcase: {"abc"1} --> {"abc":1}43 08 object 开始检测 Value 收到 StopIteration44 08.1 要么后面没有了45 08.2 要么后面不是 "/​{/​[/​n[ull]/​t[rue]/​f[alse]/​number/​NaN/​Infinity/​-Infinity 开头的东西46 -- 08.1 后面补上 null}47 -- 08.2 无脑补一个 "48 09 object 解析完一个 pair 后,下一个不是}, 期待一个 ','49 badcase {"k":1"s":2}50 10 在 09 的基础上解析完{"k":1, 发现下一个不是 ", 这个后面再优化(暂时和 06 一致)51 badcase {"k":1,x":2}52 11 array 开始检测 Value 收到 StopIteration53 11.1 要么后面没有了,补上]54 11.2 同 08.2,无脑补一个{ 看看55 12 array 解析完前一个 object, 需要一个 ,56 这里 nextchar 既不是 ] 也不是, 代表这个 nextchar 的 end 也已经+1 了，所以减 257 """58def errmsg_inv(e):59 assert isinstance(e, ValueError)60 message = e.message61 idx = message.rindex(':')62 errmsg, left = message[:idx], message[idx + 1:]63 numbers = re.compile(r'\d+').findall(left)64 parser = e.__dict__.get("parser", "")65 result = {66 "parsers": e.__dict__.get("parsers", []),67 "error": errors.get_decode_error(parser, errmsg),68 "lineno": int(numbers[0]),69 "colno": int(numbers[1]),70 }71 if len(numbers) == 3:72 result["pos"] = int(numbers[2])73 if len(numbers) > 3:74 result["endlineno"] = int(numbers[2])75 result["endcolno"] = int(numbers[3])76 result["pos"] = int(numbers[4])77 result["end"] = int(numbers[5])78 return result79def record_parser_name(parser):80 def new_parser(*args, **kwargs):81 try:82 return parser(*args, **kwargs)83 except Exception as e:84 if "parser" not in e.__dict__:85 e.__dict__["parser"] = parser.__name__86 if "parsers" not in e.__dict__:87 e.__dict__["parsers"] = []88 e.__dict__["parsers"].append(parser.__name__)89 raise e90 return new_parser91def make_decoder():92 json.decoder.scanstring = record_parser_name(py_scanstring)93 decoder = JSONDecoder()94 decoder.parse_object = record_parser_name(decoder.parse_object)95 decoder.parse_array = record_parser_name(decoder.parse_array)96 decoder.parse_string = record_parser_name(py_scanstring)97 decoder.parse_object = record_parser_name(decoder.parse_object)98 decoder.scan_once = py_make_scanner(decoder)99 return decoder100decoder = make_decoder()101DecodeResult = namedtuple('DecodeResult', ['success', 'exception', 'err_info'])102def decode_line(line):103 try:104 obj, end = decoder.scan_once(line, 0)105 ok = end == len(line)106 return DecodeResult(success=ok, exception=None, err_info=(obj, end))107 except StopIteration as e:108 return DecodeResult(success=False, exception=e, err_info=None)109 except ValueError as e:110 err_info = errmsg_inv(e)...

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test_scanstring.py

Source:test_scanstring.py Github

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...111 scanstring(s, 1, True)112 def test_overflow(self):113 import sys114 with self.assertRaises(OverflowError):115 self.kim_edn.decoder.py_scanstring(b"xxx", sys.maxsize + 1)116class TestPyScanstring(TestScanstring, PyTest):...

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timer.py

Source:timer.py Github

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1import time2from parser import Parser3p = Parser()4def timer(f):5 def wrapper(*args, **kwargs):6 start = time.time()7 result = f(*args, **kwargs)8 print(time.time() - start)9 return result10 return wrapper11def parse_x_times(string, x):12 for _ in range(x):13 p.parse(string)14parse_x_times = timer(parse_x_times)15string = """16 [17 {18 "precision": "zip",19 "Latitude": 37.7668,20 "Longitude": -122.3959,21 "Address": "",22 "City": "SAN FRANCISCO",23 "State": "CA",24 "Zip": "94107",25 "Country": "US"26 },27 {28 "precision": "zip",29 "Latitude": 37.371991,30 "Longitude": -122.026020,31 "Address": "",32 "City": "SUNNYVALE",33 "State": "CA",34 "Zip": "94085",35 "Country": "US"36 }37 ]38"""39import json40def load_x_times(string, x):41 for _ in range(x):42 json.loads(string)43load_x_times = timer(load_x_times)44import cProfile45cProfile.run('parse_x_times(string, 10000)')46from json.scanner import py_make_scanner47from json.decoder import py_scanstring48from json import decoder49decoder.scanstring = py_scanstring50dec = decoder.JSONDecoder()51dec.parse_string = py_scanstring52dec.scan_once = py_make_scanner(dec)53@timer54def decode_x_times(string, x):55 for _ in range(x):56 dec.decode(string)...

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