import os
import re
import collections
import logging as log
log.basicConfig(level=log.INFO, format='%(levelname)s: %(message)s')
Lint = collections.namedtuple('Lint', 'name level doc sourcefile group')
Config = collections.namedtuple('Config', 'name ty doc default')
lintname_re = re.compile(r'''pub\s+([A-Z_][A-Z_0-9]*)''')
group_re = re.compile(r'''\s*([a-z_][a-z_0-9]+)''')
conf_re = re.compile(r'''define_Conf! {\n([^}]*)\n}''', re.MULTILINE)
confvar_re = re.compile(
r'''/// Lint: (\w+). (.*).*\n\s*\([^,]+,\s+"([^"]+)",\s+([^=\)]+)=>\s+(.*)\),''', re.MULTILINE)
lint_levels = {
"correctness": 'Deny',
"style": 'Warn',
"complexity": 'Warn',
"perf": 'Warn',
"restriction": 'Allow',
"pedantic": 'Allow',
"nursery": 'Allow',
"cargo": 'Allow',
}
def parse_lints(lints, filepath):
last_comment = []
comment = True
clippy = False
deprecated = False
name = ""
with open(filepath) as fp:
for line in fp:
if comment:
if line.startswith("/// "):
last_comment.append(line[4:])
elif line.startswith("///"):
last_comment.append(line[3:])
elif line.startswith("declare_lint!"):
import sys
print "don't use `declare_lint!` in clippy, use `declare_clippy_lint!` instead"
sys.exit(42)
elif line.startswith("declare_clippy_lint!"):
comment = False
deprecated = False
clippy = True
name = ""
elif line.startswith("declare_deprecated_lint!"):
comment = False
deprecated = True
clippy = False
else:
last_comment = []
if not comment:
m = lintname_re.search(line)
if m:
name = m.group(1).lower()
line = next(fp)
if deprecated:
level = "Deprecated"
group = "deprecated"
else:
while True:
g = group_re.search(line)
if g:
group = g.group(1).lower()
level = lint_levels[group]
break
line = next(fp)
log.info("found %s with level %s in %s",
name, level, filepath)
lints.append(Lint(name, level, last_comment, filepath, group))
last_comment = []
comment = True
if "}" in line:
log.warn("Warning: missing Lint-Name in %s", filepath)
comment = True
def parse_configs(path):
configs = {}
with open(os.path.join(path, 'utils/conf.rs')) as fp:
contents = fp.read()
match = re.search(conf_re, contents)
confvars = re.findall(confvar_re, match.group(1))
for (lint, doc, name, default, ty) in confvars:
configs[lint.lower()] = Config(name.replace("_", "-"), ty, doc, default)
return configs
def parse_all(path="clippy_lints/src"):
lints = []
for filename in os.listdir(path):
if filename.endswith(".rs"):
parse_lints(lints, os.path.join(path, filename))
log.info("got %s lints", len(lints))
configs = parse_configs(path)
log.info("got %d configs", len(configs))
return lints, configs