def execute(self):
""""Run Checkstyle on all found non-synthetic source files."""
python_tgts = self.context.targets(
lambda tgt: isinstance(tgt, (PythonTarget)))
if not python_tgts:
return 0
interpreter_cache = PythonInterpreterCache(
PythonSetup.global_instance(),
PythonRepos.global_instance(),
logger=self.context.log.debug)
with self.invalidated(self.get_targets(
self._is_checked)) as invalidation_check:
failure_count = 0
tgts_by_compatibility, _ = interpreter_cache.partition_targets_by_compatibility(
[vt.target for vt in invalidation_check.invalid_vts])
for filters, targets in tgts_by_compatibility.items():
if self.get_options(
).interpreter_constraints_whitelist is None and not self._constraints_are_whitelisted(
filters):
deprecated_conditional(
lambda: self.get_options(
).interpreter_constraints_whitelist is None,
'1.14.0.dev2',
"Python linting is currently restricted to targets that match the global "
"interpreter constraints: {}. Pants detected unacceptable filters: {}. "
"Use the `--interpreter-constraints-whitelist` lint option to whitelist "
"compatibiltiy constraints.".format(
PythonSetup.global_instance().
interpreter_constraints, filters))
else:
sources = self.calculate_sources([tgt for tgt in targets])
if sources:
allowed_interpreters = set(
interpreter_cache.setup(filters=filters))
if not allowed_interpreters:
raise TaskError(
'No valid interpreters found for targets: {}\n(filters: {})'
.format(targets, filters))
interpreter = min(allowed_interpreters)
failure_count += self.checkstyle(interpreter, sources)
if failure_count > 0 and self.get_options().fail:
raise TaskError(
'{} Python Style issues found. You may try `./pants fmt <targets>`'
.format(failure_count))
return failure_count
