def __init__(self,
grammar: Grammar,
generalizer_class: Type = TreeGeneralizer,
parser: Optional[Parser] = None,
**kwargs: Any) -> None:
"""Constructor.
`grammar` is an input grammar in fuzzingbook format.
`generalizer_class` is the tree generalizer class to use
(default: `TreeGeneralizer`)
`parser` is the parser to use (default: `EarleyParser(grammar)`).
All other keyword args are passed to the tree generalizer, notably:
`fuzzer` - the fuzzer to use (default: `GrammarFuzzer`), and
`log` - enables debugging output if True.
"""
super().__init__()
self.grammar = grammar
assert is_valid_grammar(grammar)
self.generalizer_class = generalizer_class
if parser is None:
parser = EarleyParser(grammar)
self.parser = parser
self.kwargs = kwargs
# These save state for further fuzz() calls
self.generalized_args: Dict[str, Any] = {}
self.generalized_trees: Dict[str, DerivationTree] = {}
self.generalizers: Dict[str, TreeGeneralizer] = {}
def __init__(self, grammar: Grammar, tree: DerivationTree,
fuzzer: Optional[GrammarFuzzer] = None, log: Union[bool, int] = False):
"""
Constructor.
`grammar` is the underlying grammar;
`tree` is the tree to work on.
`fuzzer` is the grammar fuzzer to use (default: `GrammarFuzzer`)
"""
assert is_valid_grammar(grammar)
self.grammar = grammar
self.tree = tree
self.log = log
if fuzzer is None:
fuzzer = GrammarFuzzer(grammar)
self.fuzzer = fuzzer