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# Copyright (c) 2007, 2010, 2013, 2015 LOGILAB S.A. (Paris, FRANCE) <contact@logilab.fr>
# Copyright (c) 2013 Google, Inc.
# Copyright (c) 2014 Arun Persaud <arun@nubati.net>
# Copyright (c) 2015-2018, 2020 Claudiu Popa <pcmanticore@gmail.com>
# Copyright (c) 2015 Mike Frysinger <vapier@gentoo.org>
# Copyright (c) 2015 Ionel Cristian Maries <contact@ionelmc.ro>
# Copyright (c) 2016 Glenn Matthews <glenn@e-dad.net>
# Copyright (c) 2018 ssolanki <sushobhitsolanki@gmail.com>
# Copyright (c) 2019-2021 Pierre Sassoulas <pierre.sassoulas@gmail.com>
# Copyright (c) 2020-2021 hippo91 <guillaume.peillex@gmail.com>
# Copyright (c) 2020 谭九鼎 <109224573@qq.com>
# Copyright (c) 2021 Daniël van Noord <13665637+DanielNoord@users.noreply.github.com>
# Copyright (c) 2021 bot <bot@noreply.github.com>
# Copyright (c) 2021 Marc Mueller <30130371+cdce8p@users.noreply.github.com>
# Licensed under the GPL: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
# For details: https://github.com/PyCQA/pylint/blob/main/LICENSE
import sys
import tokenize
from typing import TYPE_CHECKING, Any, Optional, cast
from pylint.checkers import BaseTokenChecker
from pylint.interfaces import ITokenChecker
from pylint.reporters.ureports.nodes import Table
from pylint.utils import LinterStats, diff_string
if sys.version_info >= (3, 8):
from typing import Literal
else:
from typing_extensions import Literal
if TYPE_CHECKING:
from pylint.lint import PyLinter
def report_raw_stats(
sect,
stats: LinterStats,
old_stats: Optional[LinterStats],
) -> None:
"""calculate percentage of code / doc / comment / empty"""
total_lines = stats.code_type_count["total"]
sect.description = f"{total_lines} lines have been analyzed"
lines = ["type", "number", "%", "previous", "difference"]
for node_type in ("code", "docstring", "comment", "empty"):
node_type = cast(Literal["code", "docstring", "comment", "empty"], node_type)
total = stats.code_type_count[node_type]
percent = float(total * 100) / total_lines if total_lines else None
old = old_stats.code_type_count[node_type] if old_stats else None
diff_str = diff_string(old, total) if old else None
lines += [
node_type,
str(total),
f"{percent:.2f}" if percent is not None else "NC",
str(old) if old else "NC",
diff_str if diff_str else "NC",
]
sect.append(Table(children=lines, cols=5, rheaders=1))
class RawMetricsChecker(BaseTokenChecker):
"""does not check anything but gives some raw metrics :
* total number of lines
* total number of code lines
* total number of docstring lines
* total number of comments lines
* total number of empty lines
"""
__implements__ = (ITokenChecker,)
# configuration section name
name = "metrics"
# configuration options
options = ()
# messages
msgs: Any = {}
# reports
reports = (("RP0701", "Raw metrics", report_raw_stats),)
def __init__(self, linter):
super().__init__(linter)
def open(self):
"""init statistics"""
self.linter.stats.reset_code_count()
def process_tokens(self, tokens):
"""update stats"""
i = 0
tokens = list(tokens)
while i < len(tokens):
i, lines_number, line_type = get_type(tokens, i)
self.linter.stats.code_type_count["total"] += lines_number
self.linter.stats.code_type_count[line_type] += lines_number
JUNK = (tokenize.NL, tokenize.INDENT, tokenize.NEWLINE, tokenize.ENDMARKER)
def get_type(tokens, start_index):
"""return the line type : docstring, comment, code, empty"""
i = start_index
start = tokens[i][2]
pos = start
line_type = None
while i < len(tokens) and tokens[i][2][0] == start[0]:
tok_type = tokens[i][0]
pos = tokens[i][3]
if line_type is None:
if tok_type == tokenize.STRING:
line_type = "docstring"
elif tok_type == tokenize.COMMENT:
line_type = "comment"
elif tok_type in JUNK:
pass
else:
line_type = "code"
i += 1
if line_type is None:
line_type = "empty"
elif i < len(tokens) and tokens[i][0] == tokenize.NEWLINE:
i += 1
return i, pos[0] - start[0] + 1, line_type
def register(linter: "PyLinter") -> None:
linter.register_checker(RawMetricsChecker(linter))
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