Module pyparsing :: Class NotAny

Class NotAny

     object --+        
              |        
  ParserElement --+    
                  |    
ParseElementEnhance --+
                      |
                     NotAny

Lookahead to disallow matching with the given parse expression. ``NotAny`` does *not* advance the parsing position within the input string, it only verifies that the specified parse expression does *not* match at the current position. Also, ``NotAny`` does *not* skip over leading whitespace. ``NotAny`` always returns a null token list. May be constructed using the '~' operator.

Example:

   AND, OR, NOT = map(CaselessKeyword, "AND OR NOT".split())

   # take care not to mistake keywords for identifiers
   ident = ~(AND | OR | NOT) + Word(alphas)
   boolean_term = Optional(NOT) + ident

   # very crude boolean expression - to support parenthesis groups and
   # operation hierarchy, use infixNotation
   boolean_expr = boolean_term + ZeroOrMore((AND | OR) + boolean_term)

   # integers that are followed by "." are actually floats
   integer = Word(nums) + ~Char(".")

Nested Classes

[hide private]

Inherited from ParserElement (private): _FifoCache, _UnboundedCache, _literalStringClass

Instance Methods

[hide private]

__init__(self, expr)
x.__init__(...) initializes x; see help(type(x)) for signature

source code

parseImpl(self, instring, loc, doActions=True)

source code

__str__(self)
str(x)

source code

Inherited from ParseElementEnhance: checkRecursion, ignore, leaveWhitespace, streamline, validate

Inherited from ParserElement: __add__, __and__, __call__, __eq__, __getitem__, __hash__, __invert__, __iter__, __mul__, __ne__, __or__, __radd__, __rand__, __repr__, __req__, __rmul__, __rne__, __ror__, __rsub__, __rxor__, __sub__, __xor__, addCondition, addParseAction, canParseNext, copy, matches, parseFile, parseString, parseWithTabs, postParse, preParse, runTests, scanString, searchString, setBreak, setDebug, setDebugActions, setFailAction, setName, setParseAction, setResultsName, setWhitespaceChars, split, suppress, transformString, tryParse

Inherited from ParserElement (private): _parse, _parseCache, _parseNoCache, _setResultsName, _skipIgnorables

Inherited from object: __delattr__, __format__, __getattribute__, __new__, __reduce__, __reduce_ex__, __setattr__, __sizeof__, __subclasshook__