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Þ'¯°ÌME[YéïĵÂCå½ Ué©Áû'Ê9%eÔðNU”ë‘ÌsD3/®+UI˜9h.WC”빓$#:pz:YÓ ¿xž* ³$Í +$kñAŠ‹†¢ Uê>¸)_š¬÷©ßAÂÔb9ÇU ¯¾á•9¯ÏÏ÷O÷¼¼Fähal1‰3Ì[Ïr•´UCksNÐ] R‘¸¥H+§Šé†c©vÖÞ0iÓ76s†î!§=ß ¼~Ô'°Ãmäoäš³ªøi1úÉ)³yV8 CLÄØÁ‘WYïi€H6ÖÑiámø^ÈY´°Ñ7¥Û*—Ñ©L«Qƒï—Ùrÿ ›£Ð*š¸ˆL©ˆ$ˆ ÷¾D§9È®«qbqC)–ˆïv´çñsÑVT­Ø, <àïºÀO«Jý·õ àfPìð .wFšir´þ’2_Y *Æ€x\« ì€9š@ Ž|F⇥ˆkZ@hÖÄ0t¿-<“‹qµ¾*ZL¤Ú)&BJpÓF5=$„at*Zš$’ÑtdûÝRI1 2Ž‰$€$I$#‰SÞ’Hë¬ï;Á$¡t$’`<(ñÇt)$‡Ð.Êf¢X’Kt=Éé$‚ˆªè¢oÝëòI%Rgcª÷ŠyI%¡‰ÿ !ñ)´õ $¤ Ô’IIGÿÙ# results.py from collections.abc import MutableMapping, Mapping, MutableSequence, Iterator import pprint from weakref import ref as wkref from typing import Tuple, Any str_type: Tuple[type, ...] = (str, bytes) _generator_type = type((_ for _ in ())) class _ParseResultsWithOffset: __slots__ = ["tup"] def __init__(self, p1, p2): self.tup = (p1, p2) def __getitem__(self, i): return self.tup[i] def __getstate__(self): return self.tup def __setstate__(self, *args): self.tup = args[0] class ParseResults: """Structured parse results, to provide multiple means of access to the parsed data: - as a list (``len(results)``) - by list index (``results[0], results[1]``, etc.) - by attribute (``results.`` - see :class:`ParserElement.set_results_name`) Example:: integer = Word(nums) date_str = (integer.set_results_name("year") + '/' + integer.set_results_name("month") + '/' + integer.set_results_name("day")) # equivalent form: # date_str = (integer("year") + '/' # + integer("month") + '/' # + integer("day")) # parse_string returns a ParseResults object result = date_str.parse_string("1999/12/31") def test(s, fn=repr): print("{} -> {}".format(s, fn(eval(s)))) test("list(result)") test("result[0]") test("result['month']") test("result.day") test("'month' in result") test("'minutes' in result") test("result.dump()", str) prints:: list(result) -> ['1999', '/', '12', '/', '31'] result[0] -> '1999' result['month'] -> '12' result.day -> '31' 'month' in result -> True 'minutes' in result -> False result.dump() -> ['1999', '/', '12', '/', '31'] - day: '31' - month: '12' - year: '1999' """ _null_values: Tuple[Any, ...] = (None, [], "", ()) __slots__ = [ "_name", "_parent", "_all_names", "_modal", "_toklist", "_tokdict", "__weakref__", ] class List(list): """ Simple wrapper class to distinguish parsed list results that should be preserved as actual Python lists, instead of being converted to :class:`ParseResults`: LBRACK, RBRACK = map(pp.Suppress, "[]") element = pp.Forward() item = ppc.integer element_list = LBRACK + pp.delimited_list(element) + RBRACK # add parse actions to convert from ParseResults to actual Python collection types def as_python_list(t): return pp.ParseResults.List(t.as_list()) element_list.add_parse_action(as_python_list) element <<= item | element_list element.run_tests(''' 100 [2,3,4] [[2, 1],3,4] [(2, 1),3,4] (2,3,4) ''', post_parse=lambda s, r: (r[0], type(r[0]))) prints: 100 (100, ) [2,3,4] ([2, 3, 4], ) [[2, 1],3,4] ([[2, 1], 3, 4], ) (Used internally by :class:`Group` when `aslist=True`.) """ def __new__(cls, contained=None): if contained is None: contained = [] if not isinstance(contained, list): raise TypeError( "{} may only be constructed with a list," " not {}".format(cls.__name__, type(contained).__name__) ) return list.__new__(cls) def __new__(cls, toklist=None, name=None, **kwargs): if isinstance(toklist, ParseResults): return toklist self = object.__new__(cls) self._name = None self._parent = None self._all_names = set() if toklist is None: self._toklist = [] elif isinstance(toklist, (list, _generator_type)): self._toklist = ( [toklist[:]] if isinstance(toklist, ParseResults.List) else list(toklist) ) else: self._toklist = [toklist] self._tokdict = dict() return self # Performance tuning: we construct a *lot* of these, so keep this # constructor as small and fast as possible def __init__( self, toklist=None, name=None, asList=True, modal=True, isinstance=isinstance ): self._modal = modal if name is not None and name != "": if isinstance(name, int): name = str(name) if not modal: self._all_names = {name} self._name = name if toklist not in self._null_values: if isinstance(toklist, (str_type, type)): toklist = [toklist] if asList: if isinstance(toklist, ParseResults): self[name] = _ParseResultsWithOffset( ParseResults(toklist._toklist), 0 ) else: self[name] = _ParseResultsWithOffset( ParseResults(toklist[0]), 0 ) self[name]._name = name else: try: self[name] = toklist[0] except (KeyError, TypeError, IndexError): if toklist is not self: self[name] = toklist else: self._name = name def __getitem__(self, i): if isinstance(i, (int, slice)): return self._toklist[i] else: if i not in self._all_names: return self._tokdict[i][-1][0] else: return ParseResults([v[0] for v in self._tokdict[i]]) def __setitem__(self, k, v, isinstance=isinstance): if isinstance(v, _ParseResultsWithOffset): self._tokdict[k] = self._tokdict.get(k, list()) + [v] sub = v[0] elif isinstance(k, (int, slice)): self._toklist[k] = v sub = v else: self._tokdict[k] = self._tokdict.get(k, list()) + [ _ParseResultsWithOffset(v, 0) ] sub = v if isinstance(sub, ParseResults): sub._parent = wkref(self) def __delitem__(self, i): if isinstance(i, (int, slice)): mylen = len(self._toklist) del self._toklist[i] # convert int to slice if isinstance(i, int): if i < 0: i += mylen i = slice(i, i + 1) # get removed indices removed = list(range(*i.indices(mylen))) removed.reverse() # fixup indices in token dictionary for name, occurrences in self._tokdict.items(): for j in removed: for k, (value, position) in enumerate(occurrences): occurrences[k] = _ParseResultsWithOffset( value, position - (position > j) ) else: del self._tokdict[i] def __contains__(self, k) -> bool: return k in self._tokdict def __len__(self) -> int: return len(self._toklist) def __bool__(self) -> bool: return not not (self._toklist or self._tokdict) def __iter__(self) -> Iterator: return iter(self._toklist) def __reversed__(self) -> Iterator: return iter(self._toklist[::-1]) def keys(self): return iter(self._tokdict) def values(self): return (self[k] for k in self.keys()) def items(self): return ((k, self[k]) for k in self.keys()) def haskeys(self) -> bool: """ Since ``keys()`` returns an iterator, this method is helpful in bypassing code that looks for the existence of any defined results names.""" return bool(self._tokdict) def pop(self, *args, **kwargs): """ Removes and returns item at specified index (default= ``last``). Supports both ``list`` and ``dict`` semantics for ``pop()``. If passed no argument or an integer argument, it will use ``list`` semantics and pop tokens from the list of parsed tokens. If passed a non-integer argument (most likely a string), it will use ``dict`` semantics and pop the corresponding value from any defined results names. A second default return value argument is supported, just as in ``dict.pop()``. Example:: numlist = Word(nums)[...] print(numlist.parse_string("0 123 321")) # -> ['0', '123', '321'] def remove_first(tokens): tokens.pop(0) numlist.add_parse_action(remove_first) print(numlist.parse_string("0 123 321")) # -> ['123', '321'] label = Word(alphas) patt = label("LABEL") + Word(nums)[1, ...] print(patt.parse_string("AAB 123 321").dump()) # Use pop() in a parse action to remove named result (note that corresponding value is not # removed from list form of results) def remove_LABEL(tokens): tokens.pop("LABEL") return tokens patt.add_parse_action(remove_LABEL) print(patt.parse_string("AAB 123 321").dump()) prints:: ['AAB', '123', '321'] - LABEL: 'AAB' ['AAB', '123', '321'] """ if not args: args = [-1] for k, v in kwargs.items(): if k == "default": args = (args[0], v) else: raise TypeError( "pop() got an unexpected keyword argument {!r}".format(k) ) if isinstance(args[0], int) or len(args) == 1 or args[0] in self: index = args[0] ret = self[index] del self[index] return ret else: defaultvalue = args[1] return defaultvalue def get(self, key, default_value=None): """ Returns named result matching the given key, or if there is no such name, then returns the given ``default_value`` or ``None`` if no ``default_value`` is specified. Similar to ``dict.get()``. Example:: integer = Word(nums) date_str = integer("year") + '/' + integer("month") + '/' + integer("day") result = date_str.parse_string("1999/12/31") print(result.get("year")) # -> '1999' print(result.get("hour", "not specified")) # -> 'not specified' print(result.get("hour")) # -> None """ if key in self: return self[key] else: return default_value def insert(self, index, ins_string): """ Inserts new element at location index in the list of parsed tokens. Similar to ``list.insert()``. Example:: numlist = Word(nums)[...] print(numlist.parse_string("0 123 321")) # -> ['0', '123', '321'] # use a parse action to insert the parse location in the front of the parsed results def insert_locn(locn, tokens): tokens.insert(0, locn) numlist.add_parse_action(insert_locn) print(numlist.parse_string("0 123 321")) # -> [0, '0', '123', '321'] """ self._toklist.insert(index, ins_string) # fixup indices in token dictionary for name, occurrences in self._tokdict.items(): for k, (value, position) in enumerate(occurrences): occurrences[k] = _ParseResultsWithOffset( value, position + (position > index) ) def append(self, item): """ Add single element to end of ``ParseResults`` list of elements. Example:: numlist = Word(nums)[...] print(numlist.parse_string("0 123 321")) # -> ['0', '123', '321'] # use a parse action to compute the sum of the parsed integers, and add it to the end def append_sum(tokens): tokens.append(sum(map(int, tokens))) numlist.add_parse_action(append_sum) print(numlist.parse_string("0 123 321")) # -> ['0', '123', '321', 444] """ self._toklist.append(item) def extend(self, itemseq): """ Add sequence of elements to end of ``ParseResults`` list of elements. Example:: patt = Word(alphas)[1, ...] # use a parse action to append the reverse of the matched strings, to make a palindrome def make_palindrome(tokens): tokens.extend(reversed([t[::-1] for t in tokens])) return ''.join(tokens) patt.add_parse_action(make_palindrome) print(patt.parse_string("lskdj sdlkjf lksd")) # -> 'lskdjsdlkjflksddsklfjkldsjdksl' """ if isinstance(itemseq, ParseResults): self.__iadd__(itemseq) else: self._toklist.extend(itemseq) def clear(self): """ Clear all elements and results names. """ del self._toklist[:] self._tokdict.clear() def __getattr__(self, name): try: return self[name] except KeyError: if name.startswith("__"): raise AttributeError(name) return "" def __add__(self, other) -> "ParseResults": ret = self.copy() ret += other return ret def __iadd__(self, other) -> "ParseResults": if other._tokdict: offset = len(self._toklist) addoffset = lambda a: offset if a < 0 else a + offset otheritems = other._tokdict.items() otherdictitems = [ (k, _ParseResultsWithOffset(v[0], addoffset(v[1]))) for k, vlist in otheritems for v in vlist ] for k, v in otherdictitems: self[k] = v if isinstance(v[0], ParseResults): v[0]._parent = wkref(self) self._toklist += other._toklist self._all_names |= other._all_names return self def __radd__(self, other) -> "ParseResults": if isinstance(other, int) and other == 0: # useful for merging many ParseResults using sum() builtin return self.copy() else: # this may raise a TypeError - so be it return other + self def __repr__(self) -> str: return "{}({!r}, {})".format(type(self).__name__, self._toklist, self.as_dict()) def __str__(self) -> str: return ( "[" + ", ".join( [ str(i) if isinstance(i, ParseResults) else repr(i) for i in self._toklist ] ) + "]" ) def _asStringList(self, sep=""): out = [] for item in self._toklist: if out and sep: out.append(sep) if isinstance(item, ParseResults): out += item._asStringList() else: out.append(str(item)) return out def as_list(self) -> list: """ Returns the parse results as a nested list of matching tokens, all converted to strings. Example:: patt = Word(alphas)[1, ...] result = patt.parse_string("sldkj lsdkj sldkj") # even though the result prints in string-like form, it is actually a pyparsing ParseResults print(type(result), result) # -> ['sldkj', 'lsdkj', 'sldkj'] # Use as_list() to create an actual list result_list = result.as_list() print(type(result_list), result_list) # -> ['sldkj', 'lsdkj', 'sldkj'] """ return [ res.as_list() if isinstance(res, ParseResults) else res for res in self._toklist ] def as_dict(self) -> dict: """ Returns the named parse results as a nested dictionary. Example:: integer = Word(nums) date_str = integer("year") + '/' + integer("month") + '/' + integer("day") result = date_str.parse_string('12/31/1999') print(type(result), repr(result)) # -> (['12', '/', '31', '/', '1999'], {'day': [('1999', 4)], 'year': [('12', 0)], 'month': [('31', 2)]}) result_dict = result.as_dict() print(type(result_dict), repr(result_dict)) # -> {'day': '1999', 'year': '12', 'month': '31'} # even though a ParseResults supports dict-like access, sometime you just need to have a dict import json print(json.dumps(result)) # -> Exception: TypeError: ... is not JSON serializable print(json.dumps(result.as_dict())) # -> {"month": "31", "day": "1999", "year": "12"} """ def to_item(obj): if isinstance(obj, ParseResults): return obj.as_dict() if obj.haskeys() else [to_item(v) for v in obj] else: return obj return dict((k, to_item(v)) for k, v in self.items()) def copy(self) -> "ParseResults": """ Returns a new copy of a :class:`ParseResults` object. """ ret = ParseResults(self._toklist) ret._tokdict = self._tokdict.copy() ret._parent = self._parent ret._all_names |= self._all_names ret._name = self._name return ret def get_name(self): r""" Returns the results name for this token expression. Useful when several different expressions might match at a particular location. Example:: integer = Word(nums) ssn_expr = Regex(r"\d\d\d-\d\d-\d\d\d\d") house_number_expr = Suppress('#') + Word(nums, alphanums) user_data = (Group(house_number_expr)("house_number") | Group(ssn_expr)("ssn") | Group(integer)("age")) user_info = user_data[1, ...] result = user_info.parse_string("22 111-22-3333 #221B") for item in result: print(item.get_name(), ':', item[0]) prints:: age : 22 ssn : 111-22-3333 house_number : 221B """ if self._name: return self._name elif self._parent: par = self._parent() def find_in_parent(sub): return next( ( k for k, vlist in par._tokdict.items() for v, loc in vlist if sub is v ), None, ) return find_in_parent(self) if par else None elif ( len(self) == 1 and len(self._tokdict) == 1 and next(iter(self._tokdict.values()))[0][1] in (0, -1) ): return next(iter(self._tokdict.keys())) else: return None def dump(self, indent="", full=True, include_list=True, _depth=0) -> str: """ Diagnostic method for listing out the contents of a :class:`ParseResults`. Accepts an optional ``indent`` argument so that this string can be embedded in a nested display of other data. Example:: integer = Word(nums) date_str = integer("year") + '/' + integer("month") + '/' + integer("day") result = date_str.parse_string('1999/12/31') print(result.dump()) prints:: ['1999', '/', '12', '/', '31'] - day: '31' - month: '12' - year: '1999' """ out = [] NL = "\n" out.append(indent + str(self.as_list()) if include_list else "") if full: if self.haskeys(): items = sorted((str(k), v) for k, v in self.items()) for k, v in items: if out: out.append(NL) out.append("{}{}- {}: ".format(indent, (" " * _depth), k)) if isinstance(v, ParseResults): if v: out.append( v.dump( indent=indent, full=full, include_list=include_list, _depth=_depth + 1, ) ) else: out.append(str(v)) else: out.append(repr(v)) if any(isinstance(vv, ParseResults) for vv in self): v = self for i, vv in enumerate(v): if isinstance(vv, ParseResults): out.append( "\n{}{}[{}]:\n{}{}{}".format( indent, (" " * (_depth)), i, indent, (" " * (_depth + 1)), vv.dump( indent=indent, full=full, include_list=include_list, _depth=_depth + 1, ), ) ) else: out.append( "\n%s%s[%d]:\n%s%s%s" % ( indent, (" " * (_depth)), i, indent, (" " * (_depth + 1)), str(vv), ) ) return "".join(out) def pprint(self, *args, **kwargs): """ Pretty-printer for parsed results as a list, using the `pprint `_ module. Accepts additional positional or keyword args as defined for `pprint.pprint `_ . Example:: ident = Word(alphas, alphanums) num = Word(nums) func = Forward() term = ident | num | Group('(' + func + ')') func <<= ident + Group(Optional(delimited_list(term))) result = func.parse_string("fna a,b,(fnb c,d,200),100") result.pprint(width=40) prints:: ['fna', ['a', 'b', ['(', 'fnb', ['c', 'd', '200'], ')'], '100']] """ pprint.pprint(self.as_list(), *args, **kwargs) # add support for pickle protocol def __getstate__(self): return ( self._toklist, ( self._tokdict.copy(), self._parent is not None and self._parent() or None, self._all_names, self._name, ), ) def __setstate__(self, state): self._toklist, (self._tokdict, par, inAccumNames, self._name) = state self._all_names = set(inAccumNames) if par is not None: self._parent = wkref(par) else: self._parent = None def __getnewargs__(self): return self._toklist, self._name def __dir__(self): return dir(type(self)) + list(self.keys()) @classmethod def from_dict(cls, other, name=None) -> "ParseResults": """ Helper classmethod to construct a ``ParseResults`` from a ``dict``, preserving the name-value relations as results names. If an optional ``name`` argument is given, a nested ``ParseResults`` will be returned. """ def is_iterable(obj): try: iter(obj) except Exception: return False else: return not isinstance(obj, str_type) ret = cls([]) for k, v in other.items(): if isinstance(v, Mapping): ret += cls.from_dict(v, name=k) else: ret += cls([v], name=k, asList=is_iterable(v)) if name is not None: ret = cls([ret], name=name) return ret asList = as_list asDict = as_dict getName = get_name MutableMapping.register(ParseResults) MutableSequence.register(ParseResults)