def __init__(self, grammar, trace=0):
self._grammar = grammar
self._trace = trace
self._stack = None
self._remaining_text = None
self._history = []
AbstractParse.__init__(self)
def __init__(self, grammar, trace=0):
self._grammar = grammar
self._trace = trace
self._stack = None
self._remaining_text = None
self._history = []
AbstractParse.__init__(self)
def __init__(self, grammar, trace=0):
self._grammar = grammar
self._trace = trace
self._rtext = None
self._tree = None
self._frontier = [()]
self._tried_e = {}
self._tried_m = {}
self._history = []
self._parses = []
AbstractParse.__init__(self)
def __init__(self, grammar, trace=0):
"""
Create a new C{RecursiveDescent}, that uses C{grammar}
to parse texts.
@type grammar: C{Grammar}
@param grammar: The grammar used to parse texts.
@type trace: C{int}
@param trace: The level of tracing that should be used when
parsing a text. C{0} will generate no tracing output;
and higher numbers will produce more verbose tracing
output.
"""
self._grammar = grammar
self._trace = trace
AbstractParse.__init__(self)