mirror of
https://github.com/danog/psalm.git
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0a81f8cd6c
* Use objects, not strings, for assertions * Remove unnecessary param * Remove some unnecessary checks * Fix bad find/replace * Add note about assertions no longer stored as strings in UPGRADING.md
1006 lines
34 KiB
PHP
1006 lines
34 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\Exception\CodeException;
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use Psalm\Tests\Traits\InvalidCodeAnalysisTestTrait;
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use Psalm\Tests\Traits\ValidCodeAnalysisTestTrait;
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class ClassLikeStringTest extends TestCase
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{
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use InvalidCodeAnalysisTestTrait;
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use ValidCodeAnalysisTestTrait;
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public function testDontAllowStringStandInForNewClass(): void
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{
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$this->expectExceptionMessage('InvalidStringClass');
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$this->expectException(CodeException::class);
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Config::getInstance()->allow_string_standin_for_class = false;
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$this->addFile(
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'somefile.php',
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'<?php
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class A {}
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$a = "A";
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new $a();'
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);
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$this->analyzeFile('somefile.php', new Context());
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}
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public function testDontAllowStringStandInForStaticMethodCall(): void
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{
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$this->expectExceptionMessage('InvalidStringClass');
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$this->expectException(CodeException::class);
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Config::getInstance()->allow_string_standin_for_class = false;
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$this->addFile(
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'somefile.php',
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'<?php
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class A {
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public static function foo() : void {}
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}
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$a = "A";
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$a::foo();'
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);
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$this->analyzeFile('somefile.php', new Context());
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}
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/**
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* @return iterable<string,array{code:string,assertions?:array<string,string>,ignored_issues?:list<string>}>
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*/
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public function providerValidCodeParse(): iterable
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{
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return [
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'arrayOfClassConstants' => [
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'code' => '<?php
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/**
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* @param array<class-string> $arr
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*/
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function takesClassConstants(array $arr) : void {}
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class A {}
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class B {}
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takesClassConstants([A::class, B::class]);',
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],
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'arrayOfStringClasses' => [
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'code' => '<?php
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/**
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* @param array<class-string> $arr
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*/
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function takesClassConstants(array $arr) : void {}
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class A {}
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class B {}
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takesClassConstants(["A", "B"]);',
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'annotations' => [],
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'ignored_issues' => ['ArgumentTypeCoercion'],
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],
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'singleClassConstantAsConstant' => [
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'code' => '<?php
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/**
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* @param class-string $s
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*/
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function takesClassConstants(string $s) : void {}
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class A {}
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takesClassConstants(A::class);',
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],
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'singleClassConstantWithString' => [
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'code' => '<?php
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/**
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* @param class-string $s
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*/
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function takesClassConstants(string $s) : void {}
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class A {}
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/** @psalm-suppress ArgumentTypeCoercion */
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takesClassConstants("A");',
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'annotations' => [],
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],
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'returnClassConstant' => [
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'code' => '<?php
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class A {}
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/**
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* @return class-string
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*/
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function takesClassConstants() : string {
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return A::class;
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}',
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],
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'returnClassConstantAllowCoercion' => [
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'code' => '<?php
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class A {}
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/**
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* @return class-string
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*/
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function takesClassConstants() : string {
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return "A";
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}',
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'annotations' => [],
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'ignored_issues' => ['LessSpecificReturnStatement', 'MoreSpecificReturnType'],
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],
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'returnClassConstantArray' => [
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'code' => '<?php
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class A {}
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class B {}
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/**
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* @return array<class-string>
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*/
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function takesClassConstants() : array {
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return [A::class, B::class];
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}',
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],
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'returnClassConstantArrayAllowCoercion' => [
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'code' => '<?php
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class A {}
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class B {}
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/**
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* @return array<class-string>
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*/
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function takesClassConstants() : array {
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return ["A", "B"];
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}',
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'annotations' => [],
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'ignored_issues' => ['LessSpecificReturnStatement', 'MoreSpecificReturnType'],
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],
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'ifClassStringEquals' => [
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'code' => '<?php
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class A {}
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class B {}
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/** @param class-string $class */
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function foo(string $class) : void {
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if ($class === A::class) {}
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if ($class === A::class || $class === B::class) {}
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}',
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],
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'classStringCombination' => [
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'code' => '<?php
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class A {}
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/** @return class-string */
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function foo() : string {
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return A::class;
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}
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/** @param class-string $a */
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function bar(string $a) : void {}
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bar(rand(0, 1) ? foo() : A::class);
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bar(rand(0, 1) ? A::class : foo());',
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],
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'assertionToClassString' => [
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'code' => '<?php
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class A {}
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function foo(string $s) : void {
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if ($s === A::class) {
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bar($s);
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}
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}
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/** @param class-string $s */
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function bar(string $s) : void {
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new $s();
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}',
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'assertions' => [],
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'ignored_issues' => ['MixedMethodCall'],
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],
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'constantArrayOffset' => [
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'code' => '<?php
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class A {
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const FOO = [
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B::class => "bar",
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];
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}
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class B {}
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/** @param class-string $s */
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function bar(string $s) : void {}
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foreach (A::FOO as $class => $_) {
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bar($class);
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}',
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],
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'arrayEquivalence' => [
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'code' => '<?php
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class A {}
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class B {}
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$foo = [
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A::class,
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B::class
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];
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foreach ($foo as $class) {
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if ($class === A::class) {}
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}',
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],
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'switchMixedVar' => [
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'code' => '<?php
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class A {}
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class B {}
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class C {}
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/** @param mixed $a */
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function foo($a) : void {
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switch ($a) {
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case A::class:
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return;
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case B::class:
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case C::class:
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return;
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}
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}',
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],
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'reconcileToFalsy' => [
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'code' => '<?php
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/** @psalm-param ?class-string $s */
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function bar(?string $s) : void {}
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class A {}
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/** @psalm-return ?class-string */
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function bat() {
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if (rand(0, 1)) return null;
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return A::class;
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}
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$a = bat();
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$a ? 1 : 0;
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bar($a);',
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],
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'allowTraitClassComparison' => [
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'code' => '<?php
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trait T {
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public function foo() : void {
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if (self::class === A::class) {}
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if (self::class !== A::class) {}
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}
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}
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class A {
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use T;
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}
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class B {
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use T;
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}',
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],
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'refineStringToClassString' => [
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'code' => '<?php
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class A {}
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function foo(string $s) : ?A {
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if ($s !== A::class) {
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return null;
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}
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return new $s();
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}',
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],
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'takesChildOfClass' => [
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'code' => '<?php
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class A {}
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class AChild extends A {}
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/**
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* @param class-string<A> $s
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*/
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function foo(string $s) : void {}
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foo(AChild::class);',
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],
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'returnClassConstantClassStringParameterized' => [
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'code' => '<?php
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class A {}
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/**
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* @return class-string<A> $s
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*/
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function foo(A $a) : string {
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return $a::class;
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}',
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],
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'returnGetCalledClassClassStringParameterized' => [
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'code' => '<?php
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class A {
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/**
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* @return class-string<A> $s
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*/
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function foo() : string {
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return get_called_class();
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}
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}',
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],
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'returnGetClassClassStringParameterized' => [
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'code' => '<?php
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class A {}
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/**
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* @return class-string<A> $s
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*/
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function foo(A $a) : string {
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return get_class($a);
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}',
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],
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'returnGetParentClassClassStringParameterizedNoArg' => [
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'code' => '<?php
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class A {}
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class B extends A {
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/**
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* @return class-string<A> $s
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*/
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function foo() : string {
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return get_parent_class();
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}
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}',
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],
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'createClassOfTypeFromString' => [
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'code' => '<?php
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class A {}
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/**
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* @return class-string<A> $s
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*/
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function foo(string $s) : string {
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if (!class_exists($s)) {
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throw new \UnexpectedValueException("bad");
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}
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if (!is_a($s, A::class, true)) {
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throw new \UnexpectedValueException("bad");
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}
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return $s;
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}',
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],
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'createClassOfTypeFromStringUsingIsSubclassOf' => [
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'code' => '<?php
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class A {}
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/**
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* @return class-string<A> $s
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*/
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function foo(string $s) : string {
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if (!class_exists($s)) {
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throw new \UnexpectedValueException("bad");
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}
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if (!is_subclass_of($s, A::class)) {
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throw new \UnexpectedValueException("bad");
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}
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return $s;
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}',
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],
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'checkSubclassOfAbstract' => [
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'code' => '<?php
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interface Foo {
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public static function Bar() : bool;
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};
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class FooClass implements Foo {
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public static function Bar() : bool {
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return true;
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}
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}
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function foo(string $className) : bool {
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if (is_subclass_of($className, Foo::class, true)) {
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return $className::Bar();
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}
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return false;
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}',
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],
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'explicitIntersectionClassString' => [
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'code' => '<?php
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interface Foo {
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public static function one() : void;
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};
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interface Bar {
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public static function two() : void;
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}
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/**
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* @param interface-string<Foo&Bar> $className
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*/
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function foo($className) : void {
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$className::one();
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$className::two();
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}',
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],
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'implicitIntersectionClassString' => [
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'code' => '<?php
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interface Foo {
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public static function one() : bool;
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};
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interface Bar {
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public static function two() : bool;
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}
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/**
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* @param interface-string<Bar> $className
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*/
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function foo(string $className) : void {
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$className::two();
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if (is_subclass_of($className, Foo::class, true)) {
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$className::one();
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$className::two();
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}
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}',
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],
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'instanceofClassString' => [
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'code' => '<?php
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function f(Exception $e): ?InvalidArgumentException {
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$type = InvalidArgumentException::class;
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if ($e instanceof $type) {
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return $e;
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} else {
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return null;
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}
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}',
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],
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'instanceofClassStringNotLiteral' => [
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'code' => '<?php
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final class Z {
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/**
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* @psalm-var class-string<stdClass> $class
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*/
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private string $class = stdClass::class;
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public function go(object $object): ?stdClass {
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$a = $this->class;
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if ($object instanceof $a) {
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return $object;
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}
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return null;
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}
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}'
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],
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'returnTemplatedClassString' => [
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'code' => '<?php
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/**
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* @template T
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*
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* @param class-string<T> $shouldBe
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* @return class-string<T>
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*/
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function identity(string $shouldBe) : string { return $shouldBe; }
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identity(DateTimeImmutable::class)::createFromMutable(new DateTime());',
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],
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'filterIsObject' => [
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'code' => '<?php
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/**
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* @param interface-string<DateTimeInterface>|DateTimeInterface $maybe
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*
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* @return interface-string<DateTimeInterface>
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*/
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function Foo($maybe) : string {
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if (is_object($maybe)) {
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return get_class($maybe);
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}
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return $maybe;
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}',
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],
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'filterIsString' => [
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'code' => '<?php
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/**
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* @param interface-string<DateTimeInterface>|DateTimeInterface $maybe
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*
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* @return interface-string<DateTimeInterface>
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*/
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function Bar($maybe) : string {
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if (is_string($maybe)) {
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return $maybe;
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}
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return get_class($maybe);
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}',
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],
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'mergeLiteralClassStringsWithGeneric' => [
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'code' => '<?php
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class Base {}
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class A extends Base {}
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class B extends Base {}
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/**
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* @param array<A::class|B::class> $literal_classes
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* @param array<class-string<Base>> $generic_classes
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* @return array<class-string<Base>>
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*/
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function foo(array $literal_classes, array $generic_classes) {
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return array_merge($literal_classes, $generic_classes);
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}',
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],
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'mergeGenericClassStringsWithLiteral' => [
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'code' => '<?php
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class Base {}
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class A extends Base {}
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class B extends Base {}
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/**
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* @param array<A::class|B::class> $literal_classes
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* @param array<class-string<Base>> $generic_classes
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* @return array<class-string<Base>>
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*/
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function bar(array $literal_classes, array $generic_classes) {
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return array_merge($generic_classes, $literal_classes);
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}',
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],
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'noCrashWithIsSubclassOfNonExistentVariable' => [
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'code' => '<?php
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class A {}
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function foo() : void {
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/**
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* @psalm-suppress UndefinedVariable
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* @psalm-suppress MixedArgument
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*/
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if (!is_subclass_of($s, A::class)) {}
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}',
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],
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'allowClassExistsCheckOnClassString' => [
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'code' => '<?php
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class C
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{
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public function __construct() {
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if (class_exists(\Doesnt\Really::class)) {
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\Doesnt\Really::something();
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}
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}
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}',
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],
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'allowClassExistsCheckOnString' => [
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'code' => '<?php
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class C
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{
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public function __construct() {
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if (class_exists("Doesnt\\Really")) {
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\Doesnt\Really::something();
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}
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}
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}',
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],
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'allowComparisonToStaticClassString' => [
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'code' => '<?php
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class A {
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const CLASSES = ["foobar" => B::class];
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function foo(): bool {
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return self::CLASSES["foobar"] === static::class;
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}
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}
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class B extends A {}',
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],
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'noCrashWhenClassExists' => [
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'code' => '<?php
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class A {}
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if (class_exists(A::class)) {
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new \RuntimeException();
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}',
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],
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'noCrashWhenClassExistsNegated' => [
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'code' => '<?php
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class A {}
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if (!class_exists(A::class)) {
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new \RuntimeException();
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}',
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],
|
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'createNewObjectFromGetClass' => [
|
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'code' => '<?php
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/**
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* @psalm-consistent-constructor
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*/
|
|
class Example {
|
|
static function staticMethod(): string {
|
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return "";
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}
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|
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public function instanceMethod(): string {
|
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$className = get_class();
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|
|
return $className::staticMethod();
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @param class-string<Example> $className
|
|
*/
|
|
function example(string $className, Example $object): string {
|
|
$objectClassName = get_class($object);
|
|
|
|
takesExampleClassString($className);
|
|
takesExampleClassString($objectClassName);
|
|
|
|
if (rand(0, 1)) {
|
|
return (new $className)->instanceMethod();
|
|
}
|
|
|
|
if (rand(0, 1)) {
|
|
return (new $objectClassName)->instanceMethod();
|
|
}
|
|
|
|
if (rand(0, 1)) {
|
|
return $className::staticMethod();
|
|
}
|
|
|
|
return $objectClassName::staticMethod();
|
|
}
|
|
|
|
|
|
/** @param class-string<Example> $className */
|
|
function takesExampleClassString(string $className): void {}'
|
|
],
|
|
'noCrashOnPolyfill' => [
|
|
'code' => '<?php
|
|
if (class_exists(My_Parent::class) && !class_exists(My_Extend::class)) {
|
|
/**
|
|
* Extended class
|
|
*/
|
|
class My_Extend extends My_Parent {
|
|
/**
|
|
* Construct
|
|
*
|
|
* @return void
|
|
*/
|
|
public function __construct() {
|
|
echo "foo";
|
|
}
|
|
}
|
|
}',
|
|
],
|
|
'selfResolvedOnStaticProperty' => [
|
|
'code' => '<?php
|
|
namespace Bar;
|
|
|
|
class Foo {
|
|
/** @var class-string<self> */
|
|
private static $c;
|
|
|
|
/**
|
|
* @return class-string<self>
|
|
*/
|
|
public static function r() : string
|
|
{
|
|
return self::$c;
|
|
}
|
|
}'
|
|
],
|
|
'traitClassStringClone' => [
|
|
'code' => '<?php
|
|
trait Factory
|
|
{
|
|
/** @return class-string<static> */
|
|
public static function getFactoryClass()
|
|
{
|
|
return static::class;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @psalm-consistent-constructor
|
|
*/
|
|
class A
|
|
{
|
|
use Factory;
|
|
|
|
public static function factory(): self
|
|
{
|
|
$class = static::getFactoryClass();
|
|
return new $class;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @psalm-consistent-constructor
|
|
*/
|
|
class B
|
|
{
|
|
use Factory;
|
|
|
|
public static function factory(): self
|
|
{
|
|
$class = static::getFactoryClass();
|
|
return new $class;
|
|
}
|
|
}'
|
|
],
|
|
'staticClassReturn' => [
|
|
'code' => '<?php
|
|
/**
|
|
* @psalm-consistent-constructor
|
|
*/
|
|
class A {
|
|
/** @return static */
|
|
public static function getInstance() {
|
|
$class = static::class;
|
|
return new $class();
|
|
}
|
|
}'
|
|
],
|
|
'getCalledClassIsStaticClass' => [
|
|
'code' => '<?php
|
|
/**
|
|
* @psalm-consistent-constructor
|
|
*/
|
|
class A {
|
|
/** @return static */
|
|
public function getStatic() {
|
|
$c = get_called_class();
|
|
return new $c();
|
|
}
|
|
}'
|
|
],
|
|
'accessConstantOnClassStringVariable' => [
|
|
'code' => '<?php
|
|
class Beep {
|
|
/** @var string */
|
|
public static $boop = "boop";
|
|
}
|
|
$beep = rand(0, 1) ? new Beep() : Beep::class;
|
|
echo $beep::$boop;
|
|
',
|
|
],
|
|
'ClassConstFetchWithTemplate' => [
|
|
'code' => '<?php
|
|
/**
|
|
* @template T of object
|
|
* @psalm-param T $obj
|
|
* @return class-string<T>
|
|
*/
|
|
function a($obj) {
|
|
$class = $obj::class;
|
|
|
|
return $class;
|
|
}',
|
|
],
|
|
'classStringAllowsClasses' => [
|
|
'code' => '<?php
|
|
/**
|
|
* @param class-string $s
|
|
*/
|
|
function takesOpen(string $s): void {}
|
|
|
|
/**
|
|
* @param class-string<Exception> $s
|
|
*/
|
|
function takesException(string $s): void {}
|
|
|
|
/**
|
|
* @param class-string<Exception> $s
|
|
*/
|
|
function takesThrowable(string $s): void {}
|
|
|
|
takesOpen(InvalidArgumentException::class);
|
|
takesException(InvalidArgumentException::class);
|
|
takesThrowable(InvalidArgumentException::class);',
|
|
],
|
|
'reflectionClassCoercion' => [
|
|
'code' => '<?php
|
|
/** @return ReflectionClass<object> */
|
|
function takesString(string $s) {
|
|
/** @psalm-suppress ArgumentTypeCoercion */
|
|
return new ReflectionClass($s);
|
|
}',
|
|
],
|
|
'checkDifferentSubclass' => [
|
|
'code' => '<?php
|
|
class A {}
|
|
class B {}
|
|
|
|
/** @param class-string<A> $s */
|
|
function takesAString(string $a): void {}
|
|
/** @param class-string<B> $s */
|
|
function takesBString(string $a): void {}
|
|
|
|
/** @param class-string $s */
|
|
function foo(string $s): void {
|
|
if (is_subclass_of($s, A::class)) {
|
|
takesAString($s);
|
|
}
|
|
if (is_subclass_of($s, B::class)) {
|
|
takesBString($s);
|
|
}
|
|
}',
|
|
],
|
|
'checkDifferentSubclassAfterNotClassExists' => [
|
|
'code' => '<?php
|
|
class A {}
|
|
class B {}
|
|
|
|
/** @param class-string<A> $s */
|
|
function takesAString(string $a): void {}
|
|
/** @param class-string<B> $s */
|
|
function takesBString(string $a): void {}
|
|
|
|
function foo(string $s): void {
|
|
if (!class_exists($s, false)) {
|
|
return;
|
|
}
|
|
if (is_subclass_of($s, A::class)) {
|
|
takesAString($s);
|
|
}
|
|
if (is_subclass_of($s, B::class)) {
|
|
takesBString($s);
|
|
}
|
|
}',
|
|
],
|
|
'compareGetClassToLiteralClass' => [
|
|
'code' => '<?php
|
|
class A {}
|
|
class B extends A {}
|
|
|
|
function foo(A $a): void {
|
|
if (get_class($a) === A::class) {}
|
|
}',
|
|
],
|
|
];
|
|
}
|
|
|
|
/**
|
|
* @return iterable<string,array{code:string,error_message:string,ignored_issues?:list<string>,php_version?:string}>
|
|
*/
|
|
public function providerInvalidCodeParse(): iterable
|
|
{
|
|
return [
|
|
'arrayOfStringClasses' => [
|
|
'code' => '<?php
|
|
/**
|
|
* @param array<class-string> $arr
|
|
*/
|
|
function takesClassConstants(array $arr) : void {}
|
|
|
|
class A {}
|
|
class B {}
|
|
|
|
takesClassConstants(["A", "B"]);',
|
|
'error_message' => 'ArgumentTypeCoercion',
|
|
],
|
|
'arrayOfNonExistentStringClasses' => [
|
|
'code' => '<?php
|
|
/**
|
|
* @param array<class-string> $arr
|
|
*/
|
|
function takesClassConstants(array $arr) : void {}
|
|
/** @psalm-suppress ArgumentTypeCoercion */
|
|
takesClassConstants(["A", "B"]);',
|
|
'error_message' => 'UndefinedClass',
|
|
],
|
|
'singleClassConstantWithInvalidDocblock' => [
|
|
'code' => '<?php
|
|
/**
|
|
* @param clas-string $s
|
|
*/
|
|
function takesClassConstants(string $s) : void {}',
|
|
'error_message' => 'InvalidDocblock',
|
|
],
|
|
'returnClassConstantDisallowCoercion' => [
|
|
'code' => '<?php
|
|
class A {}
|
|
|
|
/**
|
|
* @return class-string
|
|
*/
|
|
function takesClassConstants() : string {
|
|
return "A";
|
|
}',
|
|
'error_message' => 'LessSpecificReturnStatement',
|
|
],
|
|
'returnClassConstantArrayDisallowCoercion' => [
|
|
'code' => '<?php
|
|
class A {}
|
|
|
|
/**
|
|
* @return array<class-string>
|
|
*/
|
|
function takesClassConstants() : array {
|
|
return ["A", "B"];
|
|
}',
|
|
'error_message' => 'LessSpecificReturnStatement',
|
|
],
|
|
'returnClassConstantArrayAllowCoercionWithUndefinedClass' => [
|
|
'code' => '<?php
|
|
class A {}
|
|
|
|
/**
|
|
* @return array<class-string>
|
|
*/
|
|
function takesClassConstants() : array {
|
|
return ["A", "B"];
|
|
}',
|
|
'error_message' => 'UndefinedClass',
|
|
'ignored_issues' => ['LessSpecificReturnStatement', 'MoreSpecificReturnType'],
|
|
],
|
|
'badClassStringConstructor' => [
|
|
'code' => '<?php
|
|
class Foo
|
|
{
|
|
public function __construct(int $_)
|
|
{
|
|
}
|
|
}
|
|
|
|
/**
|
|
* @return Foo
|
|
*/
|
|
function makeFoo()
|
|
{
|
|
$fooClass = Foo::class;
|
|
return new $fooClass;
|
|
}',
|
|
'error_message' => 'TooFewArguments',
|
|
],
|
|
'unknownConstructorCall' => [
|
|
'code' => '<?php
|
|
/** @param class-string $s */
|
|
function bar(string $s) : void {
|
|
new $s();
|
|
}',
|
|
'error_message' => 'MixedMethodCall',
|
|
],
|
|
'doesNotTakeChildOfClass' => [
|
|
'code' => '<?php
|
|
class A {}
|
|
class AChild extends A {}
|
|
|
|
/**
|
|
* @param A::class $s
|
|
*/
|
|
function foo(string $s) : void {}
|
|
|
|
foo(AChild::class);',
|
|
'error_message' => 'InvalidArgument',
|
|
],
|
|
'createClassOfWrongTypeFromString' => [
|
|
'code' => '<?php
|
|
class A {}
|
|
class B {}
|
|
|
|
/**
|
|
* @return class-string<A> $s
|
|
*/
|
|
function foo(string $s) : string {
|
|
if (!class_exists($s)) {
|
|
throw new \UnexpectedValueException("bad");
|
|
}
|
|
|
|
if (!is_a($s, B::class, true)) {
|
|
throw new \UnexpectedValueException("bad");
|
|
}
|
|
|
|
return $s;
|
|
}',
|
|
'error_message' => 'InvalidReturnStatement',
|
|
],
|
|
];
|
|
}
|
|
}
|