diff options
Diffstat (limited to 'env/lib/python3.10/site-packages/pyparsing/util.py')
| -rw-r--r-- | env/lib/python3.10/site-packages/pyparsing/util.py | 235 |
1 files changed, 0 insertions, 235 deletions
diff --git a/env/lib/python3.10/site-packages/pyparsing/util.py b/env/lib/python3.10/site-packages/pyparsing/util.py deleted file mode 100644 index 34ce092..0000000 --- a/env/lib/python3.10/site-packages/pyparsing/util.py +++ /dev/null @@ -1,235 +0,0 @@ -# util.py -import warnings -import types -import collections -import itertools -from functools import lru_cache -from typing import List, Union, Iterable - -_bslash = chr(92) - - -class __config_flags: - """Internal class for defining compatibility and debugging flags""" - - _all_names: List[str] = [] - _fixed_names: List[str] = [] - _type_desc = "configuration" - - @classmethod - def _set(cls, dname, value): - if dname in cls._fixed_names: - warnings.warn( - "{}.{} {} is {} and cannot be overridden".format( - cls.__name__, - dname, - cls._type_desc, - str(getattr(cls, dname)).upper(), - ) - ) - return - if dname in cls._all_names: - setattr(cls, dname, value) - else: - raise ValueError("no such {} {!r}".format(cls._type_desc, dname)) - - enable = classmethod(lambda cls, name: cls._set(name, True)) - disable = classmethod(lambda cls, name: cls._set(name, False)) - - -@lru_cache(maxsize=128) -def col(loc: int, strg: str) -> int: - """ - Returns current column within a string, counting newlines as line separators. - The first column is number 1. - - Note: the default parsing behavior is to expand tabs in the input string - before starting the parsing process. See - :class:`ParserElement.parseString` for more - information on parsing strings containing ``<TAB>`` s, and suggested - methods to maintain a consistent view of the parsed string, the parse - location, and line and column positions within the parsed string. - """ - s = strg - return 1 if 0 < loc < len(s) and s[loc - 1] == "\n" else loc - s.rfind("\n", 0, loc) - - -@lru_cache(maxsize=128) -def lineno(loc: int, strg: str) -> int: - """Returns current line number within a string, counting newlines as line separators. - The first line is number 1. - - Note - the default parsing behavior is to expand tabs in the input string - before starting the parsing process. See :class:`ParserElement.parseString` - for more information on parsing strings containing ``<TAB>`` s, and - suggested methods to maintain a consistent view of the parsed string, the - parse location, and line and column positions within the parsed string. - """ - return strg.count("\n", 0, loc) + 1 - - -@lru_cache(maxsize=128) -def line(loc: int, strg: str) -> str: - """ - Returns the line of text containing loc within a string, counting newlines as line separators. - """ - last_cr = strg.rfind("\n", 0, loc) - next_cr = strg.find("\n", loc) - return strg[last_cr + 1 : next_cr] if next_cr >= 0 else strg[last_cr + 1 :] - - -class _UnboundedCache: - def __init__(self): - cache = {} - cache_get = cache.get - self.not_in_cache = not_in_cache = object() - - def get(_, key): - return cache_get(key, not_in_cache) - - def set_(_, key, value): - cache[key] = value - - def clear(_): - cache.clear() - - self.size = None - self.get = types.MethodType(get, self) - self.set = types.MethodType(set_, self) - self.clear = types.MethodType(clear, self) - - -class _FifoCache: - def __init__(self, size): - self.not_in_cache = not_in_cache = object() - cache = collections.OrderedDict() - cache_get = cache.get - - def get(_, key): - return cache_get(key, not_in_cache) - - def set_(_, key, value): - cache[key] = value - while len(cache) > size: - cache.popitem(last=False) - - def clear(_): - cache.clear() - - self.size = size - self.get = types.MethodType(get, self) - self.set = types.MethodType(set_, self) - self.clear = types.MethodType(clear, self) - - -class LRUMemo: - """ - A memoizing mapping that retains `capacity` deleted items - - The memo tracks retained items by their access order; once `capacity` items - are retained, the least recently used item is discarded. - """ - - def __init__(self, capacity): - self._capacity = capacity - self._active = {} - self._memory = collections.OrderedDict() - - def __getitem__(self, key): - try: - return self._active[key] - except KeyError: - self._memory.move_to_end(key) - return self._memory[key] - - def __setitem__(self, key, value): - self._memory.pop(key, None) - self._active[key] = value - - def __delitem__(self, key): - try: - value = self._active.pop(key) - except KeyError: - pass - else: - while len(self._memory) >= self._capacity: - self._memory.popitem(last=False) - self._memory[key] = value - - def clear(self): - self._active.clear() - self._memory.clear() - - -class UnboundedMemo(dict): - """ - A memoizing mapping that retains all deleted items - """ - - def __delitem__(self, key): - pass - - -def _escape_regex_range_chars(s: str) -> str: - # escape these chars: ^-[] - for c in r"\^-[]": - s = s.replace(c, _bslash + c) - s = s.replace("\n", r"\n") - s = s.replace("\t", r"\t") - return str(s) - - -def _collapse_string_to_ranges( - s: Union[str, Iterable[str]], re_escape: bool = True -) -> str: - def is_consecutive(c): - c_int = ord(c) - is_consecutive.prev, prev = c_int, is_consecutive.prev - if c_int - prev > 1: - is_consecutive.value = next(is_consecutive.counter) - return is_consecutive.value - - is_consecutive.prev = 0 - is_consecutive.counter = itertools.count() - is_consecutive.value = -1 - - def escape_re_range_char(c): - return "\\" + c if c in r"\^-][" else c - - def no_escape_re_range_char(c): - return c - - if not re_escape: - escape_re_range_char = no_escape_re_range_char - - ret = [] - s = "".join(sorted(set(s))) - if len(s) > 3: - for _, chars in itertools.groupby(s, key=is_consecutive): - first = last = next(chars) - last = collections.deque( - itertools.chain(iter([last]), chars), maxlen=1 - ).pop() - if first == last: - ret.append(escape_re_range_char(first)) - else: - sep = "" if ord(last) == ord(first) + 1 else "-" - ret.append( - "{}{}{}".format( - escape_re_range_char(first), sep, escape_re_range_char(last) - ) - ) - else: - ret = [escape_re_range_char(c) for c in s] - - return "".join(ret) - - -def _flatten(ll: list) -> list: - ret = [] - for i in ll: - if isinstance(i, list): - ret.extend(_flatten(i)) - else: - ret.append(i) - return ret |