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[cleanup] Refactor JSInterpreter._seperate
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@ -25,6 +25,8 @@
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_NAME_RE = r'[a-zA-Z_$][a-zA-Z_$0-9]*'
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_MATCHING_PARENS = dict(zip('({[', ')}]'))
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class JS_Break(ExtractorError):
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def __init__(self):
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@ -88,26 +90,24 @@ def _named_object(self, namespace, obj):
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def _seperate(expr, delim=',', max_split=None):
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if not expr:
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return
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parens = {'(': 0, '{': 0, '[': 0, ']': 0, '}': 0, ')': 0}
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start, splits, pos, max_pos = 0, 0, 0, len(delim) - 1
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counters = {k: 0 for k in _MATCHING_PARENS.values()}
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start, splits, pos, delim_len = 0, 0, 0, len(delim) - 1
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for idx, char in enumerate(expr):
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if char in parens:
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parens[char] += 1
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is_in_parens = (parens['['] - parens[']']
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or parens['('] - parens[')']
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or parens['{'] - parens['}'])
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if char == delim[pos] and not is_in_parens:
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if pos == max_pos:
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pos = 0
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yield expr[start: idx - max_pos]
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start = idx + 1
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splits += 1
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if max_split and splits >= max_split:
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break
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else:
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pos += 1
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else:
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if char in _MATCHING_PARENS:
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counters[_MATCHING_PARENS[char]] += 1
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elif char in counters:
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counters[char] -= 1
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if char != delim[pos] or any(counters.values()):
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pos = 0
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continue
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elif pos != delim_len:
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pos += 1
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continue
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yield expr[start: idx - delim_len]
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start, pos = idx + 1, 0
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splits += 1
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if max_split and splits >= max_split:
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break
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yield expr[start:]
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@staticmethod
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