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from __future__ import unicode_literals
import collections
import logging
from cmakelang.lint import lintdb
logger = logging.getLogger(__name__)
class LintRecord(object):
"""Records an instance of lint at a particular location
"""
def __init__(self, spec, location, msg):
self.spec = spec
self.location = location
self.msg = msg
def __repr__(self):
if self.location is None:
return " [{:s}] {:s}".format(self.spec.idstr, self.msg)
if isinstance(self.location, tuple):
return "{:s}: [{:s}] {:s}".format(
",".join("{:02d}".format(val) for val in self.location[:2]),
self.spec.idstr, self.msg)
raise ValueError(
"Unexpected type {} for location".format(type(self.location)))
SuppressionEvent = collections.namedtuple(
"SuppresionEvent", ["lineno", "mode", "suppressions"])
class FileContext(object):
def __init__(self, global_ctx, infile_path):
self.global_ctx = global_ctx
self.infile_path = infile_path
self.config = None
self._lint = []
# Suppressions active at the current depth
self._suppressions = set()
self._supressed_count = collections.defaultdict(int)
# Map of line number to list of active suppressions starting at this line
# and ending at the line number of the next entry in the list
self._suppression_events = []
def is_idstr(self, idstr):
return idstr in self.global_ctx.lintdb
def suppress(self, lineno, idlist):
"""
Given a list of lint ids, enable a suppression for each one which is not
already supressed. Return the list of new suppressions
"""
new_suppressions = []
for idstr in idlist:
if idstr in self._suppressions:
continue
self._suppressions.add(idstr)
new_suppressions.append(idstr)
self._suppression_events.append(
SuppressionEvent(lineno, "add", list(new_suppressions)))
return new_suppressions
def unsuppress(self, lineno, idlist):
for idstr in idlist:
if idstr not in self._suppressions:
logger.warning(
"Unsupressing %s which is not currently surpressed", idstr)
self._suppressions.discard(idstr)
self._suppression_events.append(
SuppressionEvent(lineno, "remove", list(idlist)))
def record_lint(self, idstr, *args, **kwargs):
if idstr in self.config.lint.disabled_codes:
self._supressed_count[idstr] += 1
return
if idstr in self._suppressions:
self._supressed_count[idstr] += 1
return
spec = self.global_ctx.lintdb[idstr]
location = kwargs.pop("location", ())
msg = spec.msgfmt.format(*args, **kwargs)
record = LintRecord(spec, location, msg)
self._lint.append(record)
def get_lint(self):
"""Return lint records in sorted order"""
records = [
record for _, _, _, record in sorted(
(record.location, record.spec.idstr, idx, record)
for idx, record in enumerate(self._lint))]
# Remove any lint records that were suppressed at the line number where
# they were recorded
out = []
events = list(self._suppression_events)
active_suppressions = set()
for record in records:
if record.location:
while events and record.location[0] >= events[0].lineno:
event = events.pop(0)
if event.mode == "add":
for idstr in event.suppressions:
active_suppressions.add(idstr)
elif event.mode == "remove":
for idstr in event.suppressions:
active_suppressions.discard(idstr)
else:
raise ValueError("Illegal suppression event {}".format(event.mode))
if record.spec.idstr in active_suppressions:
continue
out.append(record)
return out
def writeout(self, outfile):
for record in self.get_lint():
outfile.write("{:s}:{}\n".format(self.infile_path, record))
def has_lint(self):
return bool(self.get_lint())
class GlobalContext(object):
category_names = {
"C": "Convention",
"E": "Error",
"R": "Refactor",
"W": "Warning",
}
def __init__(self, outfile):
self.outfile = outfile
self.lintdb = lintdb.get_database()
self.file_ctxs = {}
def get_file_ctx(self, infile_path, config):
if infile_path not in self.file_ctxs:
self.file_ctxs[infile_path] = FileContext(self, infile_path)
ctx = self.file_ctxs[infile_path]
ctx.config = config
return ctx
def get_category_counts(self):
lint_counts = {}
for _, file_ctx in sorted(self.file_ctxs.items()):
for record in file_ctx.get_lint():
category_char = record.spec.idstr[0]
if category_char not in lint_counts:
lint_counts[category_char] = 0
lint_counts[category_char] += 1
return lint_counts
def write_summary(self, outfile):
outfile.write("Summary\n=======\n")
outfile.write("files scanned: {:d}\n".format(len(self.file_ctxs)))
outfile.write("found lint:\n")
lint_counts = self.get_category_counts()
fieldwidth = max(len(name) for _, name in self.category_names.items())
fmtstr = " {:>" + str(fieldwidth) + "s}: {:d}\n"
for (category_char, count) in sorted(lint_counts.items()):
category_name = self.category_names[category_char]
outfile.write(fmtstr.format(category_name, count))
outfile.write("\n")
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