def extract_simplelevel(self, block: Block, level: DerivedLevel) -> List[Dict[Factor, SimpleLevel]]:
"""Recursively deciphers the excluded level to a list of combinations
basic levels."""
excluded_levels = []
excluded: List[Tuple[Level, ...]] = [cross for cross in level.get_dependent_cross_product()
if level.window.predicate(*[level.name for level in cross])]
for excluded_level_tuple in excluded:
combos: List[Dict[Factor, SimpleLevel]] = [{}]
for excluded_level in excluded_level_tuple:
if isinstance(excluded_level, DerivedLevel):
result = self.extract_simplelevel(block, excluded_level)
newcombos = []
valid = True
for r in result:
for c in combos:
for f in c:
if f in r:
if c[f] != r[f]:
valid = False
if valid:
newcombos.append({**r, **c})
combos = newcombos
else:
if not isinstance(excluded_level, SimpleLevel):
raise ValueError(f"Unexpected level type in exclusion: level {level.name} of type "
f"{type(level).__name__}.")
for c in combos:
if block.factor_in_crossing(excluded_level.factor) and block.require_complete_crossing:
block.errors.add("WARNING: Some combinations have been excluded, this crossing may not be complete!")
c[excluded_level.factor] = excluded_level
excluded_levels.extend(combos)
return excluded_levels
def extract_simplelevel(self, block: Block, level: DerivedLevel) -> List[Dict[Factor, SimpleLevel]]:
excluded_levels = []
excluded = list(filter(lambda c: level.window.fn(*list(map(lambda f: get_external_level_name(f[1]), c))), level.get_dependent_cross_product()))
for i in excluded:
combos = cast(List[Dict[Factor, SimpleLevel]], [dict()])
for j in i:
if type(j[1]) is DerivedLevel:
result = self.extract_simplelevel(block, j[1])
newcombos = []
valid = True
for r in result:
for c in combos:
for f in c:
if f in r:
if c[f] != r[f]:
valid = False
if valid:
newcombos.append({**r, **c})
combos = newcombos
else:
for c in combos:
if block.factor_in_crossing(j[0]) and block.require_complete_crossing:
block.errors.add("WARNING: Some combinations have been excluded, this crossing may not be complete!")
c[j[0]] = j[1]
excluded_levels.extend(combos)
return excluded_levels