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ArcanistLintWorkflow.php
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ArcanistLintWorkflow.php
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<?php
/*
* Copyright 2012 Facebook, 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.
*/
/**
* Runs lint rules on changes.
*
* @group workflow
*/
class ArcanistLintWorkflow extends ArcanistBaseWorkflow {
const RESULT_OKAY = 0;
const RESULT_WARNINGS = 1;
const RESULT_ERRORS = 2;
const RESULT_SKIP = 3;
private $unresolvedMessages;
private $shouldAmendChanges = false;
private $shouldAmendWithoutPrompt = false;
private $shouldAmendAutofixesWithoutPrompt = false;
public function setShouldAmendChanges($should_amend) {
$this->shouldAmendChanges = $should_amend;
return $this;
}
public function setShouldAmendWithoutPrompt($should_amend) {
$this->shouldAmendWithoutPrompt = $should_amend;
return $this;
}
public function setShouldAmendAutofixesWithoutPrompt($should_amend) {
$this->shouldAmendAutofixesWithoutPrompt = $should_amend;
return $this;
}
public function getCommandSynopses() {
return phutil_console_format(<<<EOTEXT
**lint** [__options__] [__paths__]
**lint** [__options__] --rev [__rev__]
EOTEXT
);
}
public function getCommandHelp() {
return phutil_console_format(<<<EOTEXT
Supports: git, svn, hg
Run static analysis on changes to check for mistakes. If no files
are specified, lint will be run on all files which have been modified.
EOTEXT
);
}
public function getArguments() {
return array(
'lintall' => array(
'help' =>
"Show all lint warnings, not just those on changed lines."
),
'rev' => array(
'param' => 'revision',
'help' => "Lint changes since a specific revision.",
'supports' => array(
'git',
'hg',
),
'nosupport' => array(
'svn' => "Lint does not currently support --rev in SVN.",
),
),
'output' => array(
'param' => 'format',
'help' =>
"With 'summary', show lint warnings in a more compact format. ".
"With 'json', show lint warnings in machine-readable JSON format. ".
"With 'compiler', show lint warnings in suitable for your editor."
),
'advice' => array(
'help' =>
"Show lint advice, not just warnings and errors."
),
'engine' => array(
'param' => 'classname',
'help' =>
"Override configured lint engine for this project."
),
'apply-patches' => array(
'help' =>
'Apply patches suggested by lint to the working copy without '.
'prompting.',
'conflicts' => array(
'never-apply-patches' => true,
),
),
'never-apply-patches' => array(
'help' => 'Never apply patches suggested by lint.',
'conflicts' => array(
'apply-patches' => true,
),
),
'amend-all' => array(
'help' =>
'When linting git repositories, amend HEAD with all patches '.
'suggested by lint without prompting.',
),
'amend-autofixes' => array(
'help' =>
'When linting git repositories, amend HEAD with autofix '.
'patches suggested by lint without prompting.',
),
'*' => 'paths',
);
}
public function requiresWorkingCopy() {
return true;
}
public function requiresRepositoryAPI() {
return true;
}
public function run() {
$working_copy = $this->getWorkingCopy();
$engine = $this->getArgument('engine');
if (!$engine) {
$engine = $working_copy->getConfigFromAnySource('lint.engine');
if (!$engine) {
throw new ArcanistNoEngineException(
"No lint engine configured for this project. Edit .arcconfig to ".
"specify a lint engine.");
}
}
$rev = $this->getArgument('rev');
$paths = $this->getArgument('paths');
if ($rev && $paths) {
throw new ArcanistUsageException("Specify either --rev or paths.");
}
$should_lint_all = $this->getArgument('lintall');
if ($paths) {
// NOTE: When the user specifies paths, we imply --lintall and show all
// warnings for the paths in question. This is easier to deal with for
// us and less confusing for users.
$should_lint_all = true;
}
$paths = $this->selectPathsForWorkflow($paths, $rev);
// is_subclass_of() doesn't autoload under HPHP.
if (!class_exists($engine) ||
!is_subclass_of($engine, 'ArcanistLintEngine')) {
throw new ArcanistUsageException(
"Configured lint engine '{$engine}' is not a subclass of ".
"'ArcanistLintEngine'.");
}
$engine = newv($engine, array());
$engine->setWorkingCopy($working_copy);
if ($this->getArgument('advice')) {
$engine->setMinimumSeverity(ArcanistLintSeverity::SEVERITY_ADVICE);
} else {
$engine->setMinimumSeverity(ArcanistLintSeverity::SEVERITY_AUTOFIX);
}
// Propagate information about which lines changed to the lint engine.
// This is used so that the lint engine can drop warning messages
// concerning lines that weren't in the change.
$engine->setPaths($paths);
if (!$should_lint_all) {
foreach ($paths as $path) {
// Note that getChangedLines() returns null to indicate that a file
// is binary or a directory (i.e., changed lines are not relevant).
$engine->setPathChangedLines(
$path,
$this->getChangedLines($path, 'new'));
}
}
$results = $engine->run();
if ($this->getArgument('never-apply-patches')) {
$apply_patches = false;
} else {
$apply_patches = true;
}
if ($this->getArgument('apply-patches')) {
$prompt_patches = false;
} else {
$prompt_patches = true;
}
if ($this->getArgument('amend-all')) {
$this->shouldAmendChanges = true;
$this->shouldAmendWithoutPrompt = true;
}
if ($this->getArgument('amend-autofixes')) {
$prompt_autofix_patches = false;
$this->shouldAmendChanges = true;
$this->shouldAmendAutofixesWithoutPrompt = true;
} else {
$prompt_autofix_patches = true;
}
$wrote_to_disk = false;
switch ($this->getArgument('output')) {
case 'json':
$renderer = new ArcanistLintJSONRenderer();
$prompt_patches = false;
$apply_patches = $this->getArgument('apply-patches');
break;
case 'summary':
$renderer = new ArcanistLintSummaryRenderer();
break;
case 'compiler':
$renderer = new ArcanistLintLikeCompilerRenderer();
$prompt_patches = false;
$apply_patches = $this->getArgument('apply-patches');
break;
default:
$renderer = new ArcanistLintRenderer();
$renderer->setShowAutofixPatches($prompt_autofix_patches);
break;
}
$all_autofix = true;
foreach ($results as $result) {
$result_all_autofix = $result->isAllAutofix();
if (!$result->getMessages() && !$result_all_autofix) {
continue;
}
if (!$result_all_autofix) {
$all_autofix = false;
}
$lint_result = $renderer->renderLintResult($result);
if ($lint_result) {
echo $lint_result;
}
if ($apply_patches && $result->isPatchable()) {
$patcher = ArcanistLintPatcher::newFromArcanistLintResult($result);
$old = $patcher->getUnmodifiedFileContent();
$new = $patcher->getModifiedFileContent();
if ($prompt_patches &&
!($result_all_autofix && !$prompt_autofix_patches)) {
$old_file = $result->getFilePathOnDisk();
if (!Filesystem::pathExists($old_file)) {
$old_file = '/dev/null';
}
$new_file = new TempFile();
Filesystem::writeFile($new_file, $new);
// TODO: Improve the behavior here, make it more like
// difference_render().
passthru(csprintf("diff -u %s %s", $old_file, $new_file));
$prompt = phutil_console_format(
"Apply this patch to __%s__?",
$result->getPath());
if (!phutil_console_confirm($prompt, $default_no = false)) {
continue;
}
}
$patcher->writePatchToDisk();
$wrote_to_disk = true;
}
}
$repository_api = $this->getRepositoryAPI();
if ($wrote_to_disk &&
($repository_api instanceof ArcanistGitAPI) &&
$this->shouldAmendChanges) {
if ($this->shouldAmendWithoutPrompt ||
($this->shouldAmendAutofixesWithoutPrompt && $all_autofix)) {
echo phutil_console_format(
"<bg:yellow>** LINT NOTICE **</bg> Automatically amending HEAD ".
"with lint patches.\n");
$amend = true;
} else {
$amend = phutil_console_confirm("Amend HEAD with lint patches?");
}
if ($amend) {
execx(
'(cd %s; git commit -a --amend -C HEAD)',
$repository_api->getPath());
} else {
throw new ArcanistUsageException(
"Sort out the lint changes that were applied to the working ".
"copy and relint.");
}
}
$unresolved = array();
$has_warnings = false;
$has_errors = false;
foreach ($results as $result) {
foreach ($result->getMessages() as $message) {
if (!$message->isPatchApplied()) {
if ($message->isError()) {
$has_errors = true;
} else if ($message->isWarning()) {
$has_warnings = true;
}
$unresolved[] = $message;
}
}
}
$this->unresolvedMessages = $unresolved;
// Take the most severe lint message severity and use that
// as the result code.
if ($has_errors) {
$result_code = self::RESULT_ERRORS;
} else if ($has_warnings) {
$result_code = self::RESULT_WARNINGS;
} else {
$result_code = self::RESULT_OKAY;
}
if (!$this->getParentWorkflow()) {
if ($result_code == self::RESULT_OKAY) {
echo $renderer->renderOkayResult();
}
}
return $result_code;
}
public function getUnresolvedMessages() {
return $this->unresolvedMessages;
}
}

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