class ParsleyCompatibleParser(object):
def __init__(self, grammar, receiver, bindings):
self._grammar = grammar
self._receiver = receiver
self._bindings = bindings
self._bindings['receiver'] = receiver
self.compiler = Compiler(self._grammar)
self._rules = {}
self._setup()
def getParseTree(self, name):
# XXX this must also cache .compileRule, not just .getRule
# but apparently some state is still held inside the parse tree?
if name not in self._rules:
self._rules[name] = self.compiler.compileRule(self.compiler.getRule(name))
return self._rules[name]
def _setup(self):
parseTree = self.getParseTree(self._receiver.currentRule)
self._interp = Interp(parseTree, self._setup, names=self._bindings)
def receive(self, data):
self._interp.receive(data)
class ParsleyCompatibleParser(object):
def __init__(self, grammar, receiver, bindings):
self._grammar = grammar
self._receiver = receiver
self._bindings = bindings
self._bindings['receiver'] = receiver
self.compiler = Compiler(self._grammar)
self._rules = {}
self._setup()
def getParseTree(self, name):
# XXX this must also cache .compileRule, not just .getRule
# but apparently some state is still held inside the parse tree?
if name not in self._rules:
self._rules[name] = self.compiler.compileRule(
self.compiler.getRule(name))
return self._rules[name]
def _setup(self):
parseTree = self.getParseTree(self._receiver.currentRule)
self._interp = Interp(parseTree, self._setup, names=self._bindings)
def receive(self, data):
self._interp.receive(data)
def test_reuseMany(self):
receiver = NetstringsReceiver()
compiler = Compiler("""
a = 'a'*:string 'b' -> receiver.netstringReceived(string)
""")
rule = compiler.getRule('a')
parseTree = compiler.compileRule(rule)
interp = Interp(parseTree, names={'receiver': receiver})
interp.receive('aab')
assert receiver.strings == [['a', 'a']]
interp = Interp(parseTree, names={'receiver': receiver})
interp.receive('aaab')
assert receiver.strings == [['a', 'a'], ['a', 'a', 'a']]
def test_reuseParseTree_newInterp(self):
receiver = NetstringsReceiver()
compiler = Compiler(netstringsGrammar)
rule = compiler.getRule('receiveNetstring')
parseTree = compiler.compileRule(rule)
interp = Interp(parseTree, names={'receiver': receiver})
interp.receive('11:aaaaaaaaaaa,')
assert receiver.strings == ['aaaaaaaaaaa']
interp = Interp(parseTree, names={'receiver': receiver})
interp.receive('2:bb,')
assert receiver.strings == ['aaaaaaaaaaa', 'bb']
def getParseTree(source, name=None):
compiler = Compiler(source)
return compiler.compileRule(compiler.getRule(name))
def getParseTree(source, name=None):
compiler = Compiler(source)
return compiler.compileRule(compiler.getRule(name))