mirror of
https://github.com/danog/psalm.git
synced 2024-11-30 04:39:00 +01:00
898 lines
28 KiB
PHP
898 lines
28 KiB
PHP
<?php
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namespace Psalm\Tests;
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use Psalm\Config;
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use Psalm\Context;
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use Psalm\Internal\Analyzer\FileAnalyzer;
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use Psalm\Tests\Internal\Provider;
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class UnusedCodeTest extends TestCase
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{
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/** @var \Psalm\Internal\Analyzer\ProjectAnalyzer */
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protected $project_analyzer;
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/**
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* @return void
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*/
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public function setUp() : void
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{
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FileAnalyzer::clearCache();
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$this->file_provider = new Provider\FakeFileProvider();
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$this->project_analyzer = new \Psalm\Internal\Analyzer\ProjectAnalyzer(
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new TestConfig(),
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new \Psalm\Internal\Provider\Providers(
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$this->file_provider,
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new Provider\FakeParserCacheProvider()
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)
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);
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$this->project_analyzer->getCodebase()->reportUnusedCode();
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$this->project_analyzer->setPhpVersion('7.3');
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}
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/**
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* @dataProvider providerValidCodeParse
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*
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* @param string $code
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* @param array<string> $error_levels
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*
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* @return void
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*/
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public function testValidCode($code, array $error_levels = [])
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{
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$test_name = $this->getTestName();
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if (\strpos($test_name, 'SKIPPED-') !== false) {
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$this->markTestSkipped('Skipped due to a bug.');
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}
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$file_path = self::$src_dir_path . 'somefile.php';
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$this->addFile(
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$file_path,
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$code
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);
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foreach ($error_levels as $error_level) {
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$this->project_analyzer->getCodebase()->config->setCustomErrorLevel($error_level, Config::REPORT_SUPPRESS);
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}
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$context = new Context();
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$context->collect_references = true;
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$this->analyzeFile($file_path, $context, false);
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$this->project_analyzer->consolidateAnalyzedData();
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\Psalm\IssueBuffer::processUnusedSuppressions($this->project_analyzer->getCodebase()->file_provider);
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}
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/**
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* @dataProvider providerInvalidCodeParse
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*
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* @param string $code
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* @param string $error_message
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* @param array<string> $error_levels
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*
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* @return void
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*/
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public function testInvalidCode($code, $error_message, $error_levels = [])
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{
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if (\strpos($this->getTestName(), 'SKIPPED-') !== false) {
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$this->markTestSkipped();
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}
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$this->expectException(\Psalm\Exception\CodeException::class);
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$this->expectExceptionMessageRegExp('/\b' . \preg_quote($error_message, '/') . '\b/');
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$file_path = self::$src_dir_path . 'somefile.php';
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foreach ($error_levels as $error_level) {
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$this->project_analyzer->getCodebase()->config->setCustomErrorLevel($error_level, Config::REPORT_SUPPRESS);
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}
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$this->addFile(
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$file_path,
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$code
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);
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$context = new Context();
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$context->collect_references = true;
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$this->analyzeFile($file_path, $context, false);
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$this->project_analyzer->consolidateAnalyzedData();
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\Psalm\IssueBuffer::processUnusedSuppressions($this->project_analyzer->getCodebase()->file_provider);
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}
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/**
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* @return array<string, array{string}>
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*/
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public function providerValidCodeParse()
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{
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return [
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'magicCall' => [
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'<?php
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class A {
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/** @var string */
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private $value = "default";
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/** @param string[] $args */
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public function __call(string $name, array $args) {
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if (count($args) == 1) {
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$this->modify($name, $args[0]);
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}
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}
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private function modify(string $name, string $value): void {
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call_user_func([$this, "modify" . $name], $value);
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}
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public function modifyFoo(string $value): void {
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$this->value = $value;
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}
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public function getFoo() : string {
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return $this->value;
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}
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}
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$m = new A();
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$m->foo("value");
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$m->modifyFoo("value2");
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echo $m->getFoo();',
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],
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'usedTraitMethodWithExplicitCall' => [
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'<?php
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class A {
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public function foo(): void {
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echo "parent method";
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}
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}
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trait T {
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public function foo(): void {
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echo "trait method";
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}
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}
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class B extends A {
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use T;
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}
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(new A)->foo();
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(new B)->foo();',
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],
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'usedInterfaceMethod' => [
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'<?php
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interface I {
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public function foo(): void;
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}
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class A implements I {
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public function foo(): void {}
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}
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(new A)->foo();',
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],
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'constructorIsUsed' => [
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'<?php
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class A {
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public function __construct() {
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$this->foo();
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}
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private function foo() : void {}
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}
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$a = new A();
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echo (bool) $a;',
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],
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'everythingUsed' => [
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'<?php
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interface I {
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public function foo() : void;
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}
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class B implements I {
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public function foo() : void {}
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}
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class A
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{
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/**
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* @var I
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*/
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private $i;
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/**
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* @param int[] $as
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*/
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public function __construct(array $as) {
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$this->i = new B();
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foreach ($as as $a) {
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$this->a($a, 1);
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}
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}
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private function a(int $a, int $b): self
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{
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$this->v($a, $b);
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$this->i->foo();
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return $this;
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}
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private function v(int $a, int $b): void
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{
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if ($a + $b > 0) {
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throw new \RuntimeException("");
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}
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}
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}
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new A([1, 2, 3]);',
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],
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'unusedParamWithUnderscore' => [
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'<?php
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function foo(int $_) : void {}
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foo(4);',
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],
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'unusedParamWithUnusedPrefix' => [
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'<?php
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function foo(int $unusedArg) : void {}
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foo(4);',
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],
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'usedFunctionCall' => [
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'<?php
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$a = strlen("goodbye");
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echo $a;',
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],
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'possiblyUnusedParamWithUnderscore' => [
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'<?php
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class A {
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public static function foo(int $_ = null) : void {}
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}
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A::foo();',
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],
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'possiblyUnusedParamWithUnusedPrefix' => [
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'<?php
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class A {
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public static function foo(int $unusedArg = null) : void {}
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}
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A::foo();',
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],
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'usedClass' => [
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'<?php
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class A { }
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new A();',
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],
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'usedTraitMethodWithImplicitCall' => [
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'<?php
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class A {
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public function foo() : void {}
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}
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trait T {
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public function foo() : void {}
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}
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class B extends A {
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use T;
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}
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function takesA(A $a) : void {
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$a->foo();
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}
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takesA(new B);',
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],
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'usedMethodInTryCatch' => [
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'<?php
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class A {
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protected function getC() : C {
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return new C;
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}
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}
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class C {
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public function foo() : void {}
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}
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class B extends A {
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public function bar() : void {
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$c = $this->getC();
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foreach ([1, 2, 3] as $_) {
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try {
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$c->foo();
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} catch (Exception $e) {}
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}
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}
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}
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(new B)->bar();',
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],
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'suppressPrivateUnusedMethod' => [
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'<?php
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class A {
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/**
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* @psalm-suppress UnusedMethod
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* @return void
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*/
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private function foo() {}
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}
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new A();',
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],
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'abstractMethodImplementerCoveredByParentCall' => [
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'<?php
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abstract class Foobar {
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public function doIt(): void {
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$this->inner();
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}
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abstract protected function inner(): void;
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}
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class MyFooBar extends Foobar {
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protected function inner(): void {
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// Do nothing
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}
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}
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$myFooBar = new MyFooBar();
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$myFooBar->doIt();',
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],
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'methodUsedAsCallable' => [
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'<?php
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class C {
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public static function foo() : void {}
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}
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function takesCallable(callable $c) : void {
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$c();
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}
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takesCallable([C::class, "foo"]);',
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],
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'propertyAndMethodOverriddenDownstream' => [
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'<?php
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class A {
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/** @var string */
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public $foo = "hello";
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public function bar() : void {}
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}
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class B extends A {
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/** @var string */
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public $foo = "goodbye";
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public function bar() : void {}
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}
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function foo(A $a) : void {
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echo $a->foo;
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$a->bar();
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}
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foo(new B());',
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],
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'protectedPropertyOverriddenDownstream' => [
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'<?php
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class C {
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/** @var int */
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protected $foo = 1;
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public function bar() : void {
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$this->foo = 5;
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}
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}
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class D extends C {
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protected $foo = 2;
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}
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(new D)->bar();',
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],
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'usedClassAfterExtensionLoaded' => [
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'<?php
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class A {
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public function __construct() {}
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}
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if (extension_loaded("fdsfdsfd")) {
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new A();
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}',
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],
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'usedParamInIf' => [
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'<?php
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class O {}
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class C {
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private bool $a = false;
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public array $_types = [];
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private static function mirror(array $a) : array {
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return $a;
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}
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/**
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* @param class-string<O>|null $type
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* @return self
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*/
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public function addType(?string $type, array $ids = array())
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{
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if ($this->a) {
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$ids = self::mirror($ids);
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}
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$this->_types[$type ?: ""] = new ArrayObject($ids);
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return $this;
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}
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}
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(new C)->addType(null);',
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],
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'usedMethodAfterClassExists' => [
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'<?php
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class A {
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public static function bar() : void {}
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}
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if (class_exists(A::class)) {
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A::bar();
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}',
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],
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'usedParamInLoopBeforeBreak' => [
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'<?php
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class Foo {}
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function takesFoo(Foo $foo1, Foo $foo2): Foo {
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while (rand(0, 1)) {
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echo get_class($foo1);
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if (rand(0, 1)) {
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$foo1 = $foo2;
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break;
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}
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}
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return $foo1;
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}',
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],
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'usedParamInLoopBeforeContinue' => [
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'<?php
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class Foo {}
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function takesFoo(Foo $foo1, Foo $foo2): Foo {
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while (rand(0, 1)) {
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echo get_class($foo1);
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if (rand(0, 1)) {
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$foo1 = $foo2;
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continue;
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}
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}
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return $foo1;
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}',
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],
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'usedParamInLoopBeforeWithChangeContinue' => [
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'<?php
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class Foo {}
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class Bar {
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public static function build(Foo $foo) : ?self {
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echo get_class($foo);
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return new self();
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}
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public function produceFoo(): Foo {
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return new Foo();
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}
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}
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function takesFoo(Foo $foo): Foo {
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while (rand(0, 1)) {
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$bar = Bar::build($foo);
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if ($bar) {
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$foo = $bar->produceFoo();
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continue;
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}
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}
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return $foo;
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}',
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],
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'suppressUnusedMethod' => [
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'<?php
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class A {
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/**
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* @psalm-suppress UnusedMethod
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*/
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public function foo() : void {}
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}
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new A();'
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],
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'usedFunctionInCall' => [
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'<?php
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function fooBar(): void {}
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$foo = "foo";
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$bar = "bar";
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($foo . ucfirst($bar))();',
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],
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'usedParamInUnknownMethodConcat' => [
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'<?php
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/**
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* @psalm-suppress MixedMethodCall
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*/
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function foo(string $s, object $o) : void {
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$o->foo("COUNT{$s}");
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}'
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],
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'usedFunctioninMethodCallName' => [
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'<?php
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class Foo {
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/**
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* @psalm-suppress MixedArgument
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*/
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public function bar(): void {
|
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/** @var mixed $action */
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$action = "";
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$this->{"execute" . ucfirst($action)}($request);
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}
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}
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(new Foo)->bar();'
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],
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'usedMethodCallForExternalMutationFreeClass' => [
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'<?php
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/**
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* @psalm-external-mutation-free
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*/
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class A {
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private string $foo;
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public function __construct(string $foo) {
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$this->foo = $foo;
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}
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public function setFoo(string $foo) : void {
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$this->foo = $foo;
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}
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public function getFoo() : string {
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return $this->foo;
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}
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}
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$a = new A("hello");
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$a->setFoo($a->getFoo() . "cool");',
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],
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'functionUsedAsArrayKeyInc' => [
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'<?php
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/** @param array<int, int> $arr */
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function inc(array $arr) : array {
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$arr[strlen("hello")]++;
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return $arr;
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}'
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],
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'pureFunctionUsesMethodBeforeReturning' => [
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'<?php
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/** @psalm-external-mutation-free */
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class Counter {
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private int $count = 0;
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|
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public function __construct(int $count) {
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$this->count = $count;
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}
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public function increment() : void {
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$this->count++;
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}
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}
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|
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/** @psalm-pure */
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function makesACounter(int $i) : Counter {
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$c = new Counter($i);
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$c->increment();
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return $c;
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}',
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],
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'usedUsort' => [
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'<?php
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/** @param string[] $arr */
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function foo(array $arr) : array {
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usort($arr, "strnatcasecmp");
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return $arr;
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}'
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],
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'allowArrayMapWithClosure' => [
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'<?php
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$a = [1, 2, 3];
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array_map(function($i) { echo $i;}, $a);'
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],
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];
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}
|
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|
|
/**
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|
* @return array<string,array{string,error_message:string}>
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|
*/
|
|
public function providerInvalidCodeParse()
|
|
{
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|
return [
|
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'unusedClass' => [
|
|
'<?php
|
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class A { }',
|
|
'error_message' => 'UnusedClass',
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],
|
|
'publicUnusedMethod' => [
|
|
'<?php
|
|
class A {
|
|
/** @return void */
|
|
public function foo() {}
|
|
}
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|
|
new A();',
|
|
'error_message' => 'PossiblyUnusedMethod',
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|
],
|
|
'possiblyUnusedParam' => [
|
|
'<?php
|
|
class A {
|
|
/** @return void */
|
|
public function foo(int $i) {}
|
|
}
|
|
|
|
(new A)->foo(4);',
|
|
'error_message' => 'PossiblyUnusedParam - src' . \DIRECTORY_SEPARATOR
|
|
. 'somefile.php:4:49 - Param #1 is never referenced in this method',
|
|
],
|
|
'unusedParam' => [
|
|
'<?php
|
|
function foo(int $i) {}
|
|
|
|
foo(4);',
|
|
'error_message' => 'UnusedParam',
|
|
],
|
|
'possiblyUnusedProperty' => [
|
|
'<?php
|
|
class A {
|
|
/** @var string */
|
|
public $foo = "hello";
|
|
}
|
|
|
|
$a = new A();',
|
|
'error_message' => 'PossiblyUnusedProperty',
|
|
'error_levels' => ['UnusedVariable'],
|
|
],
|
|
'unusedProperty' => [
|
|
'<?php
|
|
class A {
|
|
/** @var string */
|
|
private $foo = "hello";
|
|
}
|
|
|
|
$a = new A();',
|
|
'error_message' => 'UnusedProperty',
|
|
'error_levels' => ['UnusedVariable'],
|
|
],
|
|
'privateUnusedMethod' => [
|
|
'<?php
|
|
class A {
|
|
/** @return void */
|
|
private function foo() {}
|
|
}
|
|
|
|
new A();',
|
|
'error_message' => 'UnusedMethod',
|
|
],
|
|
'unevaluatedCode' => [
|
|
'<?php
|
|
function foo(): void {
|
|
return;
|
|
$a = "foo";
|
|
}',
|
|
'error_message' => 'UnevaluatedCode',
|
|
],
|
|
'unusedTraitMethodInParent' => [
|
|
'<?php
|
|
class A {
|
|
public function foo() : void {}
|
|
}
|
|
trait T {
|
|
public function foo() : void {}
|
|
|
|
public function bar() : void {}
|
|
}
|
|
class B extends A {
|
|
use T;
|
|
}
|
|
function takesA(A $a) : void {
|
|
$a->foo();
|
|
}
|
|
takesA(new B);',
|
|
'error_message' => 'PossiblyUnusedMethod',
|
|
],
|
|
'unusedRecursivelyUsedMethod' => [
|
|
'<?php
|
|
class C {
|
|
public function foo() : void {
|
|
if (rand(0, 1)) {
|
|
$this->foo();
|
|
}
|
|
}
|
|
|
|
public function bar() : void {}
|
|
}
|
|
|
|
(new C)->bar();',
|
|
'error_message' => 'PossiblyUnusedMethod',
|
|
],
|
|
'unusedRecursivelyUsedStaticMethod' => [
|
|
'<?php
|
|
class C {
|
|
public static function foo() : void {
|
|
if (rand(0, 1)) {
|
|
self::foo();
|
|
}
|
|
}
|
|
|
|
public function bar() : void {}
|
|
}
|
|
|
|
(new C)->bar();',
|
|
'error_message' => 'PossiblyUnusedMethod',
|
|
],
|
|
'unusedFunctionCall' => [
|
|
'<?php
|
|
strlen("goodbye");',
|
|
'error_message' => 'UnusedFunctionCall',
|
|
],
|
|
'unusedMethodCall' => [
|
|
'<?php
|
|
class A {
|
|
private string $foo;
|
|
|
|
public function __construct(string $foo) {
|
|
$this->foo = $foo;
|
|
}
|
|
|
|
public function getFoo() : string {
|
|
return $this->foo;
|
|
}
|
|
}
|
|
|
|
$a = new A("hello");
|
|
$a->getFoo();',
|
|
'error_message' => 'UnusedMethodCall',
|
|
],
|
|
'propertyOverriddenDownstreamAndNotUsed' => [
|
|
'<?php
|
|
class A {
|
|
/** @var string */
|
|
public $foo = "hello";
|
|
}
|
|
|
|
class B extends A {
|
|
/** @var string */
|
|
public $foo = "goodbye";
|
|
}
|
|
|
|
new B();',
|
|
'error_message' => 'PossiblyUnusedProperty',
|
|
],
|
|
'propertyUsedOnlyInConstructor' => [
|
|
'<?php
|
|
class A {
|
|
/** @var int */
|
|
private $used;
|
|
|
|
/** @var int */
|
|
private $unused;
|
|
|
|
/** @var int */
|
|
private static $staticUnused;
|
|
|
|
public function __construct() {
|
|
$this->used = 4;
|
|
$this->unused = 4;
|
|
self::$staticUnused = 4;
|
|
}
|
|
|
|
public function handle(): void
|
|
{
|
|
$this->used++;
|
|
}
|
|
}
|
|
(new A())->handle();',
|
|
'error_message' => 'UnusedProperty',
|
|
],
|
|
'unusedMethodCallForExternalMutationFreeClass' => [
|
|
'<?php
|
|
/**
|
|
* @psalm-external-mutation-free
|
|
*/
|
|
class A {
|
|
private string $foo;
|
|
|
|
public function __construct(string $foo) {
|
|
$this->foo = $foo;
|
|
}
|
|
|
|
public function setFoo(string $foo) : void {
|
|
$this->foo = $foo;
|
|
}
|
|
}
|
|
|
|
function foo() : void {
|
|
(new A("hello"))->setFoo("goodbye");
|
|
}',
|
|
'error_message' => 'UnusedMethodCall',
|
|
],
|
|
'unusedMethodCallForGeneratingMethod' => [
|
|
'<?php
|
|
/**
|
|
* @psalm-external-mutation-free
|
|
*/
|
|
class A {
|
|
private string $foo;
|
|
|
|
public function __construct(string $foo) {
|
|
$this->foo = $foo;
|
|
}
|
|
|
|
public function getFoo() : string {
|
|
return "abular" . $this->foo;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @psalm-pure
|
|
*/
|
|
function makeA(string $s) : A {
|
|
return new A($s);
|
|
}
|
|
|
|
function foo() : void {
|
|
makeA("hello")->getFoo();
|
|
}',
|
|
'error_message' => 'UnusedMethodCall',
|
|
],
|
|
'annotatedMutationFreeUnused' => [
|
|
'<?php
|
|
class A {
|
|
private string $s;
|
|
|
|
public function __construct(string $s) {
|
|
$this->s = $s;
|
|
}
|
|
|
|
/** @psalm-mutation-free */
|
|
public function getShort() : string {
|
|
return substr($this->s, 0, 5);
|
|
}
|
|
}
|
|
|
|
$a = new A("hello");
|
|
$a->getShort();',
|
|
'error_message' => 'UnusedMethodCall',
|
|
],
|
|
'dateTimeImmutable' => [
|
|
'<?php
|
|
function foo(DateTimeImmutable $dt) : void {
|
|
$dt->modify("+1 day");
|
|
}',
|
|
'error_message' => 'UnusedMethodCall',
|
|
],
|
|
];
|
|
}
|
|
}
|