Lint update: use arclint, remove JSHint, remove coala on CI.

This runs linting using the "arc lint" command of arcanist, which
notably gets run automatically as part of the arc diff workflow.

Changes:
- The major change is that arc lint reports, by default, only issues on
changed lines instead of changed files (--lintall changes that).
- JSHint is largely redundant with eslint and does not support some of
the new Javascript functionality that we are able to use in 0 A.D., such
as conditional chaining, thus it is removed (of course, users can still
run it manually).
- Eslint 7 is supported out of the box and updated to ES 2020
- cppcheck and eslint are optional - if the executable is not found
(e.g. in PATH), it will fallback to a 'dummy' PHP script that does
nothing. This has been tested on windows, mac and Debian (CI).
- The licence year linter now suggests replacement, and has been
rewritten as an arcanist linter.
- Add a JSON error linter.

The intention is to have non-intrusive external linting, and largely the
same text linting.

Coala has largely gone unmaintained in the past few years (more so than
arcanist anyways) and installing it on modern Python is convoluted.

Differential Revision: https://code.wildfiregames.com/D3639
This was SVN commit r25056.
This commit is contained in:
wraitii 2021-03-15 15:14:28 +00:00
parent 3e46d2e33f
commit abc7f2a248
20 changed files with 591 additions and 115 deletions

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@ -1,4 +1,5 @@
{
"phabricator.uri" : "https://code.wildfiregames.com/",
"repository.callsign" : "P"
"repository.callsign" : "P",
"load": ["build/arclint/pyrolint"]
}

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@ -3,6 +3,7 @@
"(^binaries/system/)",
"(^build/premake/premake5/)",
"(^source/third_party/)",
"(test_[^.]+.cpp$)",
"(^libraries/)"
],
"linters": {
@ -14,6 +15,25 @@
"3": "disabled",
"5": "disabled"
}
},
"licence-year": {
"type": "licence-year"
},
"json": {
"type": "json",
"include": "/\\.json$/"
},
"eslint": {
"type": "eslint",
"bin": ["eslint", "build\\arclint\\dummies\\eslint.bat", "build/arclint/dummies/eslint.php"],
"include": "/\\.js$/",
"config": "build/arclint/configs/eslintrc.json"
},
"cppcheck": {
"type": "cppcheck",
"bin": ["cppcheck", "build\\arclint\\dummies\\cppcheck.bat", "build/arclint/dummies/cppcheck.php"],
"include": "/\\.(h|cpp)$/",
"flags": ["--max-configs=40", "--language=c++", "--std=c++17", "-Isource/"]
}
}
}

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@ -1,11 +0,0 @@
[Source]
bears = CPPCheckBear, LicenseYearBear
language = c++
files = source/**.(cpp|h)
ignore = source/third_party
[JS]
bears = ESLintBear, JSHintBear
eslint_config = build/coala/lint-config/eslintrc.json
jshint_config = build/coala/lint-config/jshintrc.json
files = binaries/data/**.js

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@ -42,6 +42,12 @@ in particular, let us know and we can try to clarify it.
/build
Various (unspecified)
/build/arclint
GPL version 2 (or later) - see license_gpl-2.0.txt
/build/arclint/pyrolint
Apache version 2 - see license_apache2.txt within that directory
/build/premake/premake5
BSD

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@ -0,0 +1,6 @@
Files in pyrolint/ (and its subdirectories) are released under the Apache 2 licence.
This matches Arcanist: https://github.com/phacility/arcanist
Some files are modified from Pinterest/arcanist-linters (also Apache 2), see https://github.com/pinterest/arcanist-linters. The original copyright header has been retained to identify them.
All other files are released under GPL version 2 or later.

37
build/arclint/README.md Normal file
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@ -0,0 +1,37 @@
# Linting
This folder tools for linting 0 A.D. code
Linting is done via Arcanist: https://secure.phabricator.com/book/phabricator/article/arcanist_lint/
## Linters
- `text` is configured to detect whitespace issues.
- `json` detects JSON syntax errors.
- `licence-year` detects Copyright header years and compares against modification time.
- `eslint`, if installed, will run on javascript files.
- `cppcheck`, if installed, will run on C++ files.
## Installation
This assumes you have arcanist already installed. If not, consult https://trac.wildfiregames.com/wiki/Phabricator#UsingArcanist .
The linting is done via custom PHP scripts, residing in `pyrolint/`.
Configuration is at the root of the project, under `.arclint`.
### Installing linters
We provide dummy replacement for external linters, so that they are not required.
#### eslint
Installation via npm is recommended. The linter assumes a global installation of both eslint and the "brace-rules" plugin.
`npm install -g eslint@latest eslint-plugin-brace-rules`
See also https://eslint.org/docs/user-guide/getting-started
#### cppcheck
Cppcheck is available on various package managers, including HomeBrew on macOS.
An installer is available on windows.
See http://cppcheck.sourceforge.net for details.

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@ -1,6 +1,6 @@
{
"parserOptions": {
"ecmaVersion": 6
"ecmaVersion": 2020
},
"plugins": [
"brace-rules"

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@ -0,0 +1,2 @@
@echo off
php build\arclint\dummies\cppcheck.php

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@ -0,0 +1,43 @@
#!/usr/bin/env php
<?php
/**
* Copyright (C) 2021 Wildfire Games.
* This file is part of 0 A.D.
*
* 0 A.D. is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* 0 A.D. is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* This file replaces cppcheck if the former is not found, to avoid failure in 'arc lint'.
* It is written in PHP as we can assume php is installed if arcanist is to work at all.
* It mimics `cppcheck --xml`.
* Set the VERBOSE env variable to generate an 'advice' level lint message.
*/
$verbose = getenv("VERBOSE") ? getenv("VERBOSE") : false;
$advice = !$verbose ? "" : <<<EOD
<error id="skipped" msg="Cppcheck was not found - skipped" severity="advice" inconclusive="true">
<location file="build/arclint/dummies/cppcheck.php" line="23"/>
</error>
EOD;
$str = <<<EOD
<?xml version="1.0" encoding="UTF-8"?>
<results version="2"><errors>$advice</errors></results>
EOD;
fwrite(STDERR, $str);
?>

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@ -0,0 +1,2 @@
@echo off
php build\arclint\dummies\eslint.php

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@ -0,0 +1,45 @@
#!/usr/bin/env php
<?php
/**
* Copyright (C) 2021 Wildfire Games.
* This file is part of 0 A.D.
*
* 0 A.D. is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 2 of the License, or
* (at your option) any later version.
*
* 0 A.D. is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* This file replaces eslint if the former is not found, to avoid failure in 'arc lint'.
* It is written in PHP as we can assume php is installed if arcanist is to work at all.
* It mimics `eslint --format json`.
* Set the VERBOSE env variable to generate an 'advice' level lint message.
*/
$verbose = getenv("VERBOSE") ? getenv("VERBOSE") : false;
$advice = <<<EOD
{
"filePath": "build/arclint/dummies/eslint.php",
"messages": [{
"ruleId": "skipped",
"severity": 0,
"message": "ESLint not found - skipped",
"line": 23,
"column": 0
}]
}
EOD;
fwrite(STDOUT, $verbose ? "[$advice]" : "[]");
?>

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@ -0,0 +1,201 @@
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limitations under the License.

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@ -0,0 +1,3 @@
<?php
phutil_register_library('pyrolint', __FILE__);

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@ -0,0 +1,20 @@
<?php
/**
* This file is automatically generated. Use 'arc liberate' to rebuild it.
*
* @generated
* @phutil-library-version 2
*/
phutil_register_library_map(array(
'__library_version__' => 2,
'class' => array(
'ESLintLinter' => 'src/ESLintLinter.php',
'LicenceYearLinter' => 'src/LicenceYearLinter.php',
),
'function' => array(),
'xmap' => array(
'ESLintLinter' => 'ArcanistExternalLinter',
'LicenceYearLinter' => 'ArcanistLinter',
),
));

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@ -0,0 +1,122 @@
<?php
/**
* Copyright 2016 Pinterest, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* Copyright 2021 Wildfire Games.
* Lints JavaScript via ESlint.
* Heavily modified from pinterest/arcanist-linters. Original licence above.
*/
final class ESLintLinter extends ArcanistExternalLinter {
private $config;
public function getLinterName() {
return 'ESLINT';
}
public function getLinterConfigurationName() {
return 'eslint';
}
public function getDefaultBinary() {
return 'eslint';
}
public function getInstallInstructions() {
return pht(
'Install eslint using npm install -g eslint.',
'Install the brace-rule plugin using',
'npm install -g eslint-plugin-brace-rules');
}
protected function getMandatoryFlags() {
list($err, $stdout, $stderr) = exec_manual('npm root -g');
return array(
'--format=json',
'--no-color',
'--config',
$this->config,
// This allows globally installing plugins even with eslint 6+
'--resolve-plugins-relative-to',
strtok($stdout, "\n")
);
}
public function getLinterConfigurationOptions() {
$options = array(
'config' => array(
'type' => 'optional string',
'help' => pht('Link to the config file.'),
),
);
return $options + parent::getLinterConfigurationOptions();
}
public function setLinterConfigurationValue($key, $value) {
switch ($key) {
case 'config':
$this->config = $value;
return;
}
return parent::setLinterConfigurationValue($key, $value);
}
protected function parseLinterOutput($path, $err, $stdout, $stderr) {
// Gate on $stderr b/c $err (exit code) is expected.
if ($stderr) {
return false;
}
$json = json_decode($stdout, true);
$messages = array();
foreach ($json as $file) {
foreach ($file['messages'] as $offense) {
// Skip file ignored warning: if a file is ignored by .eslintingore
// but linted explicitly (by arcanist), a warning will be reported,
// containing only: `{fatal:false,severity:1,message:...}`.
if (strpos($offense['message'], "File ignored ") === 0) {
continue;
}
$message = new ArcanistLintMessage();
$message->setPath($file['filePath']);
$message->setSeverity($this->mapSeverity(idx($offense, 'severity', '0')));
$message->setName(nonempty(idx($offense, 'ruleId'), 'unknown'));
$message->setDescription(idx($offense, 'message'));
$message->setLine(idx($offense, 'line'));
$message->setChar(idx($offense, 'column'));
$message->setCode($this->getLinterName());
$messages[] = $message;
}
}
return $messages;
}
private function mapSeverity($eslintSeverity) {
switch($eslintSeverity) {
case '0':
return ArcanistLintSeverity::SEVERITY_ADVICE;
case '1':
return ArcanistLintSeverity::SEVERITY_WARNING;
case '2':
default:
return ArcanistLintSeverity::SEVERITY_ERROR;
}
}
}

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@ -0,0 +1,78 @@
<?php
/**
* Copyright 2021 Wildfire Games.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* Linter for copyright years - if the modification time is incorrect, suggests update.
*/
final class LicenceYearLinter extends ArcanistLinter {
public function getInfoName() {
return pht('Licence Year Linter');
}
public function getLinterName() {
return 'LICENCE YEAR';
}
public function getLinterConfigurationName() {
return 'licence-year';
}
const BAD_YEAR = 1;
public function getLintSeverityMap() {
return array(
// Error makes it appear even if on an unmodified line, too.
self::BAD_YEAR => ArcanistLintSeverity::SEVERITY_ERROR,
);
}
public function getLintNameMap() {
return array(
self::BAD_YEAR => pht('Inaccurate Copyright Year'),
);
}
public function lintPath($path) {
$txt = $this->getData($path);
$matches = null;
$preg = preg_match_all(
"/Copyright( \(C\))? (20[0-9]{2}) Wildfire Games/",
$txt,
$matches,
PREG_OFFSET_CAPTURE);
if (!$preg) {
return;
}
$year = date("Y", filemtime($path));
foreach ($matches[2] as $match) {
list($string, $offset) = $match;
if ($string == $year) {
continue;
}
$this->raiseLintAtOffset(
$offset,
self::BAD_YEAR,
pht('Inaccurate Copyright Year'),
$string,
"$year");
}
}
}

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@ -1,59 +0,0 @@
from coalib.bears.LocalBear import LocalBear
from coalib.results.Result import Result
from os.path import getmtime
from re import compile
from datetime import date
# Requires https://pypi.python.org/pypi/svn
from svn.local import LocalClient
from svn.exception import SvnException
class LicenseYearBear(LocalBear):
"""
Detects a wrong year of a license header
"""
LANGUAGES = {'C', 'C++'}
AUTHORS = {'Vladislav Belov'}
LICENSE = 'GPL-2.0'
CAN_DETECT = {'Documentation', 'Formatting'}
def get_last_modification(self, filename):
client = LocalClient(filename)
was_modified = False
for status in client.status():
if status.type_raw_name == 'modified':
was_modified = True
break
if not was_modified:
try:
return client.info()['commit_date'].year
except (AttributeError, SvnException):
return None
else:
return date.today().year
def run(self, filename, file):
modification_year = self.get_last_modification(filename)
if not modification_year:
return
license_regexp = compile('/\* Copyright \([cC]?\) ([\d]+) Wildfire Games')
for line_number, line in enumerate(file):
match = license_regexp.search(line)
if not match:
break
license_year = match.group(1)
if not license_year:
break
license_year = int(license_year)
if modification_year == license_year:
break
return [Result.from_values(origin=self,
message='License should have "%d" year instead of "%d"' % (modification_year, license_year),
file=filename, line=line_number + 1)]

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@ -1,11 +0,0 @@
{
"esversion": 6,
"eqeqeq": false,
"freeze": true,
"latedef": "nofunc",
"loopfunc": true,
"noarg": true,
"nonbsp": true,
"undef": false,
"unused": false
}

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@ -1,22 +0,0 @@
FROM python:3.8
RUN useradd --uid 1006 builder
RUN apt-get -yy update && apt-get -yy install \
cppcheck \
git \
npm \
subversion
RUN npm install -g npm@latest
RUN npm install -g eslint@5.16.0 jshint eslint-plugin-brace-rules
RUN pip3 install svn
RUN git clone -b 0ad-fixes https://github.com/0ad/coala.git
RUN cd coala && pip3 install .
RUN git clone -b 0ad-fixes https://github.com/0ad/coala-bears.git
RUN cd coala-bears && pip3 install .
USER builder

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@ -1,4 +1,4 @@
/* Copyright (C) 2020 Wildfire Games.
/* Copyright (C) 2021 Wildfire Games.
* This file is part of 0 A.D.
*
* 0 A.D. is free software: you can redistribute it and/or modify
@ -147,16 +147,9 @@ pipeline {
steps {
script {
try {
withDockerContainer("0ad-coala:latest") {
sh '''
svn st | grep '^[AM]' | cut -c 9- | xargs coala -d build/coala --ci --disable-caching \
--format '{{ "name": "{origin}", "code": "{origin}", "severity": "{severity_str}", "path": "{file}", "line": {line}, "description": "`{message}`" }}' \
--limit-files > coala-report
'''
}
sh 'arc lint --output json > .phabricator-lint'
} catch (e) {
sh 'sed -i "s|$(pwd)/||g" coala-report'
sh 'sed -e "s/INFO/advice/g" -e "s/NORMAL/warning/g" -e "s/MAJOR/error/g" coala-report > .phabricator-lint'
sh 'echo \"{ \\\"name\\\": \\\"error\\\", \\\"severity\\\": \\\"error\\\", \\\"code\\\": \\\"0\\\", \\\"description\\\": \\\"lint could not run\\\" }\" > .phabricator-lint '
}
}
}