def test_expiry(self):
fifo = CircularFifo(3)
assert None == fifo.append(1)
assert None == fifo.append(2)
assert None == fifo.append(3)
for i in range(4, 10):
assert i - 3 == fifo.append(i)
def test_expiry(self):
fifo = CircularFifo(3)
assert None == fifo.append(1)
assert None == fifo.append(2)
assert None == fifo.append(3)
for i in range(4, 10):
assert i - 3 == fifo.append(i)
def test_pop(self):
fifo = CircularFifo(3)
for i in range(1, 3):
for j in range(i):
assert None == fifo.append(j)
for j in range(i):
popped = fifo.pop()
assert j == popped, "{0} {1} {2}".format(i, j, popped)
for i in range(4):
fifo.append(i)
assert 1 == fifo.pop()
def test_pop(self):
fifo = CircularFifo(3)
for i in range(1, 3):
for j in range(i):
assert None == fifo.append(j)
for j in range(i):
popped = fifo.pop()
assert j == popped, '{0} {1} {2}'.format(i, j, popped)
for i in range(4):
fifo.append(i)
assert 1 == fifo.pop()
def test_list(self):
fifo = CircularFifo(3)
for i in range(7):
fifo.append(i)
assert [4, 5, 6] == list(fifo)
fifo.append(7)
assert [5, 6, 7] == list(fifo)
fifo.append(8)
assert [6, 7, 8] == list(fifo)
fifo.append(9)
assert [7, 8, 9] == list(fifo)
def test_list(self):
fifo = CircularFifo(3)
for i in range(7):
fifo.append(i)
assert [4, 5, 6] == list(fifo)
fifo.append(7)
assert [5, 6, 7] == list(fifo)
fifo.append(8)
assert [6, 7, 8] == list(fifo)
fifo.append(9)
assert [7, 8, 9] == list(fifo)
class _RecordDeepest(_TraceStack):
'''
A logger (implemented as a monitor - `MonitorInterface`)
that records the deepest match found during a parse.
'''
def __init__(self, n_before=6, n_results_after=2, n_done_after=2):
super(_RecordDeepest, self).__init__(enabled=True)
self.n_before = n_before
self.n_results_after = n_results_after
self.n_done_after = n_done_after
self._limited = CircularFifo(n_before)
self._before = []
self._results_after = []
self._done_after = []
self._deepest = -1e99
self._countdown_result = 0
self._countdown_done = 0
def _log_result(self, value, text):
'''
Modify `TraceStack` to record the data.
'''
if type(value) is tuple:
self.record(True, text)
def _log_error(self, text):
'''
Modify `TraceStack` to record the data.
'''
self.record(True, text)
def _log_done(self, text):
'''
Modify `TraceStack` to record the data.
'''
self.record(False, text)
def record(self, is_result, text):
'''
Record the data.
'''
try:
stream = self.generator.stream
try:
depth = s_delta(stream)[0]
except AttributeError: # no .depth()
depth = -1
if depth >= self._deepest and is_result:
self._deepest = depth
self._countdown_result = self.n_results_after
self._countdown_done = self.n_done_after
self._before = list(self._limited)
self._results_after = []
self._done_after = []
elif is_result and self._countdown_result:
self._countdown_result -= 1
self._results_after.append(text)
elif not is_result and self._countdown_done:
self._countdown_done -= 1
self._done_after.append(text)
self._limited.append(text)
except StopIteration: # end of iterator stream
pass
def yield_(self, value):
'''
Display the result and reset.
'''
self._deepest = 0
self._limited.clear()
self.__display()
def raise_(self, value):
'''
Display the result and reset.
'''
self._deepest = 0
self._limited.clear()
self.__display()
def __display(self):
'''
Display the result.
'''
self._info(self.__fmt())
def __fmt(self):
'''
fmt the result.
'''
return fmt(
'\nUp to {0} matches before and including longest match:\n{1}\n'
'Up to {2} failures following longest match:\n{3}\n'
'Up to {4} successful matches following longest match:\n{5}\n',
self.n_before, '\n'.join(self._before),
self.n_done_after, '\n'.join(self._done_after),
self.n_results_after, '\n'.join(self._results_after))
class _RecordDeepest(_TraceStack):
'''
A logger (implemented as a monitor - `MonitorInterface`)
that records the deepest match found during a parse.
'''
def __init__(self, n_before=6, n_results_after=2, n_done_after=2):
super(_RecordDeepest, self).__init__(enabled=True)
self.n_before = n_before
self.n_results_after = n_results_after
self.n_done_after = n_done_after
self._limited = CircularFifo(n_before)
self._before = []
self._results_after = []
self._done_after = []
self._deepest = -1e99
self._countdown_result = 0
self._countdown_done = 0
def _log_result(self, value, text):
'''
Modify `TraceStack` to record the data.
'''
if type(value) is tuple:
self.record(True, text)
def _log_error(self, text):
'''
Modify `TraceStack` to record the data.
'''
self.record(True, text)
def _log_done(self, text):
'''
Modify `TraceStack` to record the data.
'''
self.record(False, text)
def record(self, is_result, text):
'''
Record the data.
'''
try:
stream = self.generator.stream
try:
depth = s_delta(stream)[0]
except AttributeError: # no .depth()
depth = -1
if depth >= self._deepest and is_result:
self._deepest = depth
self._countdown_result = self.n_results_after
self._countdown_done = self.n_done_after
self._before = list(self._limited)
self._results_after = []
self._done_after = []
elif is_result and self._countdown_result:
self._countdown_result -= 1
self._results_after.append(text)
elif not is_result and self._countdown_done:
self._countdown_done -= 1
self._done_after.append(text)
self._limited.append(text)
except StopIteration: # end of iterator stream
pass
def yield_(self, value):
'''
Display the result and reset.
'''
self._deepest = 0
self._limited.clear()
self.__display()
def raise_(self, value):
'''
Display the result and reset.
'''
self._deepest = 0
self._limited.clear()
self.__display()
def __display(self):
'''
Display the result.
'''
self._info(self.__fmt())
def __fmt(self):
'''
fmt the result.
'''
return fmt(
'\nUp to {0} matches before and including longest match:\n{1}\n'
'Up to {2} failures following longest match:\n{3}\n'
'Up to {4} successful matches following longest match:\n{5}\n',
self.n_before, '\n'.join(self._before), self.n_done_after,
'\n'.join(self._done_after), self.n_results_after,
'\n'.join(self._results_after))