mirror of
https://github.com/rust-lang/rust-clippy
synced 2024-11-10 23:24:24 +00:00
129 lines
4.2 KiB
Python
129 lines
4.2 KiB
Python
# Copyright 2014-2018 The Rust Project Developers. See the COPYRIGHT
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# file at the top-level directory of this distribution and at
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# http://rust-lang.org/COPYRIGHT.
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#
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# Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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# http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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# <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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# option. This file may not be copied, modified, or distributed
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# except according to those terms.
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# Common utils for the several housekeeping scripts.
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import os
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import re
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import collections
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import logging as log
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log.basicConfig(level=log.INFO, format='%(levelname)s: %(message)s')
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Lint = collections.namedtuple('Lint', 'name level doc sourcefile group')
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Config = collections.namedtuple('Config', 'name ty doc default')
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lintname_re = re.compile(r'''pub\s+([A-Z_][A-Z_0-9]*)''')
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group_re = re.compile(r'''\s*([a-z_][a-z_0-9]+)''')
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conf_re = re.compile(r'''define_Conf! {\n([^}]*)\n}''', re.MULTILINE)
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confvar_re = re.compile(
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r'''/// Lint: (\w+). (.*).*\n\s*\([^,]+,\s+"([^"]+)",\s+([^=\)]+)=>\s+(.*)\),''', re.MULTILINE)
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lint_levels = {
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"correctness": 'Deny',
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"style": 'Warn',
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"complexity": 'Warn',
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"perf": 'Warn',
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"restriction": 'Allow',
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"pedantic": 'Allow',
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"nursery": 'Allow',
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"cargo": 'Allow',
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}
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def parse_lints(lints, filepath):
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last_comment = []
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comment = True
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clippy = False
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deprecated = False
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name = ""
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with open(filepath) as fp:
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for line in fp:
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if comment:
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if line.startswith("/// "):
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last_comment.append(line[4:])
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elif line.startswith("///"):
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last_comment.append(line[3:])
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elif line.startswith("declare_lint!"):
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import sys
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print("don't use `declare_lint!` in Clippy, use `declare_clippy_lint!` instead")
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sys.exit(42)
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elif line.startswith("declare_clippy_lint!"):
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comment = False
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deprecated = False
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clippy = True
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name = ""
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elif line.startswith("declare_deprecated_lint!"):
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comment = False
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deprecated = True
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clippy = False
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else:
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last_comment = []
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if not comment:
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m = lintname_re.search(line)
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if m:
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name = m.group(1).lower()
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line = next(fp)
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if deprecated:
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level = "Deprecated"
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group = "deprecated"
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else:
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while True:
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g = group_re.search(line)
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if g:
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group = g.group(1).lower()
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level = lint_levels.get(group, None)
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break
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line = next(fp)
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if level is None:
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continue
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log.info("found %s with level %s in %s",
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name, level, filepath)
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lints.append(Lint(name, level, last_comment, filepath, group))
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last_comment = []
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comment = True
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if "}" in line:
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log.warn("Warning: missing Lint-Name in %s", filepath)
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comment = True
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def parse_configs(path):
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configs = {}
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with open(os.path.join(path, 'utils/conf.rs')) as fp:
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contents = fp.read()
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match = re.search(conf_re, contents)
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confvars = re.findall(confvar_re, match.group(1))
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for (lint, doc, name, default, ty) in confvars:
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configs[lint.lower()] = Config(name.replace("_", "-"), ty, doc, default)
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return configs
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def parse_all(path="clippy_lints/src"):
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lints = []
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for root, dirs, files in os.walk(path):
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for fn in files:
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if fn.endswith('.rs'):
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parse_lints(lints, os.path.join(root, fn))
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log.info("got %s lints", len(lints))
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configs = parse_configs(path)
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log.info("got %d configs", len(configs))
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return lints, configs
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