s, pe): """ internal factory method to simplify creating one type of ParseException from another - avoids having __init__ signature conflicts among subclasses """ return cls(pe.pstr, pe.loc, pe.msg, pe.parserElement) @property def line(self) -> str: """ Return the line of text where the exception occurred. """ return line(self.loc, self.pstr) @property def lineno(self) -> int: """ Return the 1-based line number of text where the exception occurred. """ return lineno(self.loc, self.pstr) @property def col(self) -> int: """ Return the 1-based column on the line of text where the exception occurred. """ return col(self.loc, self.pstr) @property def column(self) -> int: """ Return the 1-based column on the line of text where the exception occurred. """ return col(self.loc, self.pstr) def __str__(self) -> str: if self.pstr: if self.loc >= len(self.pstr): foundstr = ", found end of text" else: # pull out next word at error location found_match = _exception_word_extractor.match(self.pstr, self.loc) if found_match is not None: found = found_match.group(0) else: found = self.pstr[self.loc : self.loc + 1] foundstr = (", found %r" % found).replace(r"\\", "\\") else: foundstr = "" return "{}{} (at char {}), (line:{}, col:{})".format( self.msg, foundstr, self.loc, self.lineno, self.column ) def __repr__(self): return str(self) def mark_input_line(self, marker_string: str = None, *, markerString=">!<") -> str: """ Extracts the exception line from the input string, and marks the location of the exception with a special symbol. """ markerString = marker_string if marker_string is not None else markerString line_str = self.line line_column = self.column - 1 if markerString: line_str = "".join( (line_str[:line_column], markerString, line_str[line_column:]) ) return line_str.strip() def explain(self, depth=16) -> str: """ Method to translate the Python internal traceback into a list of the pyparsing expressions that caused the exception to be raised. Parameters: - depth (default=16) - number of levels back in the stack trace to list expression and function names; if None, the full stack trace names will be listed; if 0, only the failing input line, marker, and exception string will be shown Returns a multi-line string listing the ParserElements and/or function names in the exception's stack trace. Example:: expr = pp.Word(pp.nums) * 3 try: expr.parse_string("123 456 A789") except pp.ParseException as pe: print(pe.explain(depth=0)) prints:: 123 456 A789 ^ ParseException: Expected W:(0-9), found 'A' (at char 8), (line:1, col:9) Note: the diagnostic output will include string representations of the expressions that failed to parse. These representations will be more helpful if you use `set_name` to give identifiable names to your expressions. Otherwise they will use the default string forms, which may be cryptic to read. Note: pyparsing's default truncation of exception tracebacks may also truncate the stack of expressions that are displayed in the ``explain`` output. To get the full listing of parser expressions, you may have to set ``ParserElement.verbose_stacktrace = True`` """ return self.explain_exception(self, depth) markInputline = mark_input_line class ParseException(ParseBaseException): """ Exception thrown when a parse expression doesn't match the input string Example:: try: Word(nums).set_name("integer").parse_string("ABC") except ParseException as pe: print(pe) print("column: {}".format(pe.column)) prints:: Expected integer (at char 0), (line:1, col:1) column: 1 """ class ParseFatalException(ParseBaseException): """ User-throwable exception thrown when inconsistent parse content is found; stops all parsing immediately """ class ParseSyntaxException(ParseFatalException): """ Just like :class:`ParseFatalException`, but thrown internally when an :class:`ErrorStop` ('-' operator) indicates that parsing is to stop immediately because an unbacktrackable syntax error has been found. """ class RecursiveGrammarException(Exception): """ Exception thrown by :class:`ParserElement.validate` if the grammar could be left-recursive; parser may need to enable left recursion using :class:`ParserElement.enable_left_recursion` """ def __init__(self, parseElementList): self.parseElementTrace = parseElementList def __str__(self) -> str: return "RecursiveGrammarException: {}".format(self.parseElementTrace) PK