def get_specset(marker_list):
# type: (List) -> Optional[SpecifierSet]
specset = set()
_last_str = "and"
for marker_parts in marker_list:
if isinstance(marker_parts, str):
_last_str = marker_parts # noqa
else:
specset.update(_get_specifiers_from_markers(marker_parts))
specifiers = SpecifierSet()
specifiers._specs = frozenset(specset)
return specifiers
def _get_specs(specset):
if specset is None:
return
if is_instance(specset, Specifier):
new_specset = SpecifierSet()
specs = set()
specs.add(specset)
new_specset._specs = frozenset(specs)
specset = new_specset
if isinstance(specset, str):
specset = SpecifierSet(specset)
result = []
for spec in set(specset):
version = spec.version
op = spec.operator
if op in ("in", "not in"):
versions = version.split(",")
op = "==" if op == "in" else "!="
for ver in versions:
result.append((op, _tuplize_version(ver.strip())))
else:
result.append((spec.operator, _tuplize_version(spec.version)))
return sorted(result, key=operator.itemgetter(1))
def parse_marker_dict(marker_dict):
op = marker_dict["op"]
lhs = marker_dict["lhs"]
rhs = marker_dict["rhs"]
# This is where the spec sets for each side land if we have an "or" operator
side_spec_list = []
side_markers_list = []
finalized_marker = ""
# And if we hit the end of the parse tree we use this format string to make a marker
format_string = "{lhs} {op} {rhs}"
specset = SpecifierSet()
specs = set()
# Essentially we will iterate over each side of the parsed marker if either one is
# A mapping instance (i.e. a dictionary) and recursively parse and reduce the specset
# Union the "and" specs, intersect the "or"s to find the most appropriate range
if any(issubclass(type(side), Mapping) for side in (lhs, rhs)):
for side in (lhs, rhs):
side_specs = set()
side_markers = set()
if issubclass(type(side), Mapping):
merged_side_specs, merged_side_markers = parse_marker_dict(side)
side_specs.update(merged_side_specs)
side_markers.update(merged_side_markers)
else:
marker = _ensure_marker(side)
marker_parts = getattr(marker, "_markers", [])
if marker_parts[0][0].value == "python_version":
side_specs |= set(get_specset(marker_parts))
else:
side_markers.add(str(marker))
side_spec_list.append(side_specs)
side_markers_list.append(side_markers)
if op == "and":
# When we are "and"-ing things together, it probably makes the most sense
# to reduce them here into a single PySpec instance
specs = reduce(lambda x, y: set(x) | set(y), side_spec_list)
markers = reduce(lambda x, y: set(x) | set(y), side_markers_list)
if not specs and not markers:
return specset, finalized_marker
if markers and isinstance(markers, (tuple, list, Set)):
finalized_marker = Marker(" and ".join([m for m in markers if m]))
elif markers:
finalized_marker = str(markers)
specset._specs = frozenset(specs)
return specset, finalized_marker
# Actually when we "or" things as well we can also just turn them into a reduced
# set using this logic now
sides = reduce(lambda x, y: set(x) & set(y), side_spec_list)
finalized_marker = " or ".join(
[normalize_marker_str(m) for m in side_markers_list]
)
specset._specs = frozenset(sorted(sides))
return specset, finalized_marker
else:
# At the tip of the tree we are dealing with strings all around and they just need
# to be smashed together
specs = set()
if lhs == "python_version":
format_string = "{lhs}{op}{rhs}"
marker = Marker(format_string.format(**marker_dict))
marker_parts = getattr(marker, "_markers", [])
_set = get_specset(marker_parts)
if _set:
specs |= set(_set)
specset._specs = frozenset(specs)
return specset, finalized_marker