def pad(self, value, pad_width, mode='constant', constant_values=0):
dims = range(len(self.staticshape(value)))
if isinstance(mode, six.string_types) and len(
self.staticshape(constant_values)) == 0:
return self._single_mode_single_constant_pad(
value, pad_width, mode, constant_values)
else:
mode = expand(mode, shape=(len(dims), 2))
passes = [('wrap', 0), ('symmetric', 0), ('reflect', 0)]
constant_values = expand(constant_values, shape=(len(dims), 2))
constant_value_set = set()
for d in dims:
for upper in (False, True):
constant_value_set.add(constant_values[d][upper])
for const in constant_value_set:
passes.append(('constant', const))
for single_mode, constant_value in passes: # order matters! wrap first
widths = [[
collapsed_gather_nd(pad_width, [d, upper])
if mode[d][upper] == single_mode
and constant_values[d][upper] == constant_value else 0
for upper in (False, True)
] for d in dims]
value = self._single_mode_single_constant_pad(
value, widths, single_mode, constant_value)
return value
def pad(self, value, pad_width, mode='constant', constant_values=0):
dims = range(len(self.shape(value)))
constant_values = expand(constant_values, shape=(len(dims), 2))
if isinstance(mode, six.string_types):
return self._single_mode_pad(value, pad_width, mode, constant_values)
else:
mode = expand(mode, shape=(len(dims), 2))
for single_mode in ('wrap', 'symmetric', 'reflect', 'constant'): # order matters! wrap first
widths = [[collapsed_gather_nd(pad_width, [d, upper]) if mode[d][upper] == single_mode else 0 for upper in (False, True)] for d in dims]
value = self._single_mode_pad(value, widths, single_mode, constant_values)
return value
def test_expand(self):
numpy.testing.assert_equal(expand(1, shape=(2, 2)), [[1, 1], [1, 1]])
numpy.testing.assert_equal(expand(['a', ('b', 'c')], shape=(2, 2)),
[['a', 'a'], ['b', 'c']])
