mirror of
https://github.com/danog/psalm.git
synced 2024-12-13 01:37:23 +01:00
1744 lines
58 KiB
PHP
1744 lines
58 KiB
PHP
<?php
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namespace Psalm\Tests;
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use function is_array;
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use Psalm\Context;
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use Psalm\Internal\Analyzer\FileAnalyzer;
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use Psalm\Internal\Analyzer\StatementsAnalyzer;
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use Psalm\Internal\Analyzer\TypeAnalyzer;
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use Psalm\Internal\Clause;
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use Psalm\Type;
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use Psalm\Type\Algebra;
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use Psalm\Type\Reconciler;
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class TypeReconciliationTest extends TestCase
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{
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use Traits\InvalidCodeAnalysisTestTrait;
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use Traits\ValidCodeAnalysisTestTrait;
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/** @var FileAnalyzer */
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protected $file_analyzer;
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/** @var StatementsAnalyzer */
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protected $statements_analyzer;
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/**
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* @return void
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*/
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public function setUp() : void
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{
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parent::setUp();
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$this->file_analyzer = new FileAnalyzer($this->project_analyzer, 'somefile.php', 'somefile.php');
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$this->file_analyzer->context = new Context();
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$this->statements_analyzer = new StatementsAnalyzer($this->file_analyzer);
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}
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/**
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* @dataProvider providerTestReconcilation
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*
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* @param string $expected
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* @param string $type
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* @param string $string
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*
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* @return void
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*/
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public function testReconcilation($expected, $type, $string)
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{
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$reconciled = Reconciler::reconcileTypes(
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$type,
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Type::parseString($string),
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null,
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$this->statements_analyzer,
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false,
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[]
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);
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$this->assertSame(
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$expected,
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$reconciled->getId()
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);
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if (is_array($reconciled->getTypes())) {
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$this->assertContainsOnlyInstancesOf('Psalm\Type\Atomic', $reconciled->getTypes());
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}
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}
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/**
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* @dataProvider providerTestTypeIsContainedBy
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*
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* @param string $input
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* @param string $container
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*
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* @return void
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*/
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public function testTypeIsContainedBy($input, $container)
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{
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$this->assertTrue(
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TypeAnalyzer::isContainedBy(
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$this->project_analyzer->getCodebase(),
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Type::parseString($input),
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Type::parseString($container)
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)
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);
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}
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/**
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* @return void
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*/
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public function testNegateFormula()
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{
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$formula = [
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new Clause(['$a' => ['!falsy']]),
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];
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$negated_formula = Algebra::negateFormula($formula);
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$this->assertCount(1, $negated_formula);
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$this->assertSame(['$a' => ['falsy']], $negated_formula[0]->possibilities);
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$formula = [
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new Clause(['$a' => ['!falsy'], '$b' => ['!falsy']]),
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];
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$negated_formula = Algebra::negateFormula($formula);
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$this->assertCount(2, $negated_formula);
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$this->assertSame(['$a' => ['falsy']], $negated_formula[0]->possibilities);
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$this->assertSame(['$b' => ['falsy']], $negated_formula[1]->possibilities);
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$formula = [
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new Clause(['$a' => ['!falsy']]),
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new Clause(['$b' => ['!falsy']]),
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];
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$negated_formula = Algebra::negateFormula($formula);
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$this->assertCount(1, $negated_formula);
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$this->assertSame(['$a' => ['falsy'], '$b' => ['falsy']], $negated_formula[0]->possibilities);
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$formula = [
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new Clause(['$a' => ['int', 'string'], '$b' => ['!falsy']]),
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];
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$negated_formula = Algebra::negateFormula($formula);
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$this->assertCount(3, $negated_formula);
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$this->assertSame(['$a' => ['!int']], $negated_formula[0]->possibilities);
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$this->assertSame(['$a' => ['!string']], $negated_formula[1]->possibilities);
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$this->assertSame(['$b' => ['falsy']], $negated_formula[2]->possibilities);
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}
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/**
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* @return void
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*/
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public function testContainsClause()
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{
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$this->assertTrue(
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(new Clause(
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[
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'$a' => ['!falsy'],
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'$b' => ['!falsy'],
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]
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))->contains(
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new Clause(
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[
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'$a' => ['!falsy'],
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]
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)
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)
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);
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$this->assertFalse(
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(new Clause(
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[
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'$a' => ['!falsy'],
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]
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))->contains(
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new Clause(
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[
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'$a' => ['!falsy'],
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'$b' => ['!falsy'],
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]
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)
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)
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);
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}
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/**
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* @return void
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*/
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public function testSimplifyCNF()
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{
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$formula = [
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new Clause(['$a' => ['!falsy']]),
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new Clause(['$a' => ['falsy'], '$b' => ['falsy']]),
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];
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$simplified_formula = Algebra::simplifyCNF($formula);
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$this->assertCount(2, $simplified_formula);
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$this->assertSame(['$a' => ['!falsy']], $simplified_formula[0]->possibilities);
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$this->assertSame(['$b' => ['falsy']], $simplified_formula[1]->possibilities);
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}
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/**
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* @return array<string,array{string,string,string}>
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*/
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public function providerTestReconcilation()
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{
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return [
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'notNullWithObject' => ['MyObject', '!null', 'MyObject'],
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'notNullWithObjectPipeNull' => ['MyObject', '!null', 'MyObject|null'],
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'notNullWithMyObjectPipeFalse' => ['false|MyObject', '!null', 'MyObject|false'],
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'notNullWithMixed' => ['mixed', '!null', 'mixed'],
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'notEmptyWithMyObject' => ['MyObject', '!falsy', 'MyObject'],
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'notEmptyWithMyObjectPipeNull' => ['MyObject', '!falsy', 'MyObject|null'],
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'notEmptyWithMyObjectPipeFalse' => ['MyObject', '!falsy', 'MyObject|false'],
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'notEmptyWithMixed' => ['non-empty-mixed', '!falsy', 'mixed'],
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// @todo in the future this should also work
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//'notEmptyWithMyObjectFalseTrue' => ['MyObject|true', '!falsy', 'MyObject|bool'],
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'nullWithMyObjectPipeNull' => ['null', 'null', 'MyObject|null'],
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'nullWithMixed' => ['null', 'null', 'mixed'],
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'falsyWithMyObject' => ['mixed', 'falsy', 'MyObject'],
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'falsyWithMyObjectPipeFalse' => ['false', 'falsy', 'MyObject|false'],
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'falsyWithMyObjectPipeBool' => ['false', 'falsy', 'MyObject|bool'],
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'falsyWithMixed' => ['empty-mixed', 'falsy', 'mixed'],
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'falsyWithBool' => ['false', 'falsy', 'bool'],
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'falsyWithStringOrNull' => ['null|string()|string(0)', 'falsy', 'string|null'],
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'falsyWithScalarOrNull' => ['empty-scalar', 'falsy', 'scalar'],
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'notMyObjectWithMyObjectPipeBool' => ['bool', '!MyObject', 'MyObject|bool'],
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'notMyObjectWithMyObjectPipeNull' => ['null', '!MyObject', 'MyObject|null'],
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'notMyObjectWithMyObjectAPipeMyObjectB' => ['MyObjectB', '!MyObjectA', 'MyObjectA|MyObjectB'],
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'myObjectWithMyObjectPipeBool' => ['MyObject', 'MyObject', 'MyObject|bool'],
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'myObjectWithMyObjectAPipeMyObjectB' => ['MyObjectA', 'MyObjectA', 'MyObjectA|MyObjectB'],
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'array' => ['array<array-key, mixed>', 'array', 'array|null'],
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'2dArray' => ['array<array-key, array<array-key, string>>', 'array', 'array<array<string>>|null'],
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'numeric' => ['numeric-string', 'numeric', 'string'],
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'nullableClassString' => ['null', 'falsy', '?class-string'],
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'mixedOrNullNotFalsy' => ['non-empty-mixed', '!falsy', 'mixed|null'],
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'mixedOrNullFalsy' => ['null|empty-mixed', 'falsy', 'mixed|null'],
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'nullableClassStringFalsy' => ['null', 'falsy', 'class-string<A>|null'],
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'nullableClassStringEqualsNull' => ['null', '=null', 'class-string<A>|null'],
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'nullableClassStringTruthy' => ['class-string<A>', '!falsy', 'class-string<A>|null'],
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];
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}
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/**
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* @return array<string,array{string,string}>
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*/
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public function providerTestTypeIsContainedBy()
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{
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return [
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'arrayContainsWithArrayOfStrings' => ['array<string>', 'array'],
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'arrayContainsWithArrayOfExceptions' => ['array<Exception>', 'array'],
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'unionContainsWithstring' => ['string', 'string|false'],
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'unionContainsWithFalse' => ['false', 'string|false'],
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'objectLikeTypeWithPossiblyUndefinedToGeneric' => [
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'array{0: array{a: string}, 1: array{c: string, e: string}}',
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'array<int, array<string, string>>',
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],
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'objectLikeTypeWithPossiblyUndefinedToEmpty' => [
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'array<empty, empty>',
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'array{a?: string, b?: string}',
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],
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];
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}
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/**
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* @return iterable<string,array{string,assertions?:array<string,string>,error_levels?: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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'intIsMixed' => [
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'<?php
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/** @param mixed $a */
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function foo($a): void {
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$b = 5;
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if ($b === $a) { }
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}',
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],
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'typeResolutionFromDocblock' => [
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'<?php
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class A { }
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/**
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* @param A $a
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* @return void
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*/
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function fooFoo($a) {
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if ($a instanceof A) {
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}
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}',
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'assertions' => [],
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'error_levels' => ['RedundantConditionGivenDocblockType'],
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],
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'arrayTypeResolutionFromDocblock' => [
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'<?php
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/**
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* @param string[] $strs
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* @return void
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*/
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function foo(array $strs) {
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foreach ($strs as $str) {
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if (is_string($str)) {}
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}
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}',
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'assertions' => [],
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'error_levels' => ['RedundantConditionGivenDocblockType'],
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],
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'typeResolutionFromDocblockInside' => [
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'<?php
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/**
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* @param int $length
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* @return void
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*/
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function foo($length) {
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if (!is_int($length)) {
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if (is_numeric($length)) {
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}
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}
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}',
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'assertions' => [],
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'error_levels' => ['DocblockTypeContradiction'],
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],
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'notInstanceof' => [
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'<?php
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class A { }
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class B extends A { }
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$a = new A();
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$out = null;
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if ($a instanceof B) {
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// do something
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}
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else {
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$out = $a;
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}',
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'assertions' => [
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'$out' => 'null|A',
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],
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],
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'notInstanceOfProperty' => [
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'<?php
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class B { }
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class C extends B { }
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class A {
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/** @var B */
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public $foo;
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public function __construct() {
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$this->foo = new B();
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}
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}
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$a = new A();
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$out = null;
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if ($a->foo instanceof C) {
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// do something
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}
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else {
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$out = $a->foo;
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}',
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'assertions' => [
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'$out' => 'null|B',
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],
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'error_levels' => [],
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],
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'notInstanceOfPropertyElseif' => [
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'<?php
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class B { }
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class C extends B { }
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class A {
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/** @var string|B */
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public $foo = "";
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}
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$a = new A();
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$out = null;
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if (is_string($a->foo)) {
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}
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elseif ($a->foo instanceof C) {
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// do something
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}
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else {
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$out = $a->foo;
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}',
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'assertions' => [
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'$out' => 'null|B',
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],
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'error_levels' => [],
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],
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'typeRefinementWithIsNumericOnIntOrFalse' => [
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'<?php
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/** @return void */
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function fooFoo(string $a) {
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if (is_numeric($a)) { }
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if (is_numeric($a) && $a === "1") { }
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}
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$b = rand(0, 1) ? 5 : false;
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if (is_numeric($b)) { }',
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],
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'typeRefinementWithIsNumericAndIsString' => [
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'<?php
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/**
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* @param mixed $a
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* @return void
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*/
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function foo ($a) {
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if (is_numeric($a)) {
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if (is_string($a)) {
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}
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}
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}',
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],
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'typeRefinementWithIsNumericOnIntOrString' => [
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'<?php
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$a = rand(0, 5) > 4 ? "hello" : 5;
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if (is_numeric($a)) {
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exit;
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}',
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'assertions' => [
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'$a' => 'string',
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],
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],
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'typeRefinementWithStringOrTrue' => [
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'<?php
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$a = rand(0, 5) > 4 ? "hello" : true;
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if (is_bool($a)) {
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exit;
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}',
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'assertions' => [
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'$a' => 'string',
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],
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],
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'updateMultipleIssetVars' => [
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'<?php
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/** @return void **/
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function foo(string $s) {}
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$a = rand(0, 1) ? ["hello"] : null;
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if (isset($a[0])) {
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foo($a[0]);
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}',
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],
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'updateMultipleIssetVarsWithVariableOffset' => [
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'<?php
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/** @return void **/
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function foo(string $s) {}
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$a = rand(0, 1) ? ["hello"] : null;
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$b = 0;
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if (isset($a[$b])) {
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foo($a[$b]);
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}',
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],
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'instanceOfSubtypes' => [
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'<?php
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abstract class A {}
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class B extends A {}
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abstract class C {}
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class D extends C {}
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function makeA(): A {
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return new B();
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}
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function makeC(): C {
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return new D();
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}
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$a = rand(0, 1) ? makeA(): makeC();
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if ($a instanceof B || $a instanceof D) { }',
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],
|
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'typeReconciliationAfterIfAndReturn' => [
|
|
'<?php
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/**
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* @param string|int $a
|
|
* @return string|int
|
|
*/
|
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function foo($a) {
|
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if (is_string($a)) {
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return $a;
|
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} elseif (is_int($a)) {
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return $a;
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}
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|
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throw new \LogicException("Runtime error");
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}',
|
|
'assertions' => [],
|
|
'error_levels' => ['RedundantConditionGivenDocblockType'],
|
|
],
|
|
'ignoreNullCheckAndMaintainNullValue' => [
|
|
'<?php
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$a = null;
|
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if ($a !== null) { }
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|
$b = $a;',
|
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'assertions' => [
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'$b' => 'null',
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],
|
|
'error_levels' => ['TypeDoesNotContainType', 'RedundantCondition'],
|
|
],
|
|
'ignoreNullCheckAndMaintainNullableValue' => [
|
|
'<?php
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$a = rand(0, 1) ? 5 : null;
|
|
if ($a !== null) { }
|
|
$b = $a;',
|
|
'assertions' => [
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'$b' => 'int|null',
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|
],
|
|
],
|
|
'ternaryByRefVar' => [
|
|
'<?php
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function foo(): void {
|
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$b = null;
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$c = rand(0, 1) ? bar($b): null;
|
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if (is_int($b)) { }
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}
|
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function bar(?int &$a): void {
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$a = 5;
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}',
|
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],
|
|
'ternaryByRefVarInConditional' => [
|
|
'<?php
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function foo(): void {
|
|
$b = null;
|
|
if (rand(0, 1) || bar($b)) {
|
|
if (is_int($b)) { }
|
|
}
|
|
}
|
|
function bar(?int &$a): void {
|
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$a = 5;
|
|
}',
|
|
],
|
|
'possibleInstanceof' => [
|
|
'<?php
|
|
interface I1 {}
|
|
interface I2 {}
|
|
|
|
class A
|
|
{
|
|
public function foo(): void {
|
|
if ($this instanceof I1 || $this instanceof I2) {}
|
|
}
|
|
}',
|
|
],
|
|
'intersection' => [
|
|
'<?php
|
|
interface I {
|
|
public function bat(): void;
|
|
}
|
|
|
|
function takesI(I $i): void {}
|
|
function takesA(A $a): void {}
|
|
/** @param A&I $a */
|
|
function takesAandI($a): void {}
|
|
/** @param I&A $a */
|
|
function takesIandA($a): void {}
|
|
|
|
class A {
|
|
/**
|
|
* @return A&I|null
|
|
*/
|
|
public function foo() {
|
|
if ($this instanceof I) {
|
|
$this->bar();
|
|
$this->bat();
|
|
|
|
takesA($this);
|
|
takesI($this);
|
|
takesAandI($this);
|
|
takesIandA($this);
|
|
}
|
|
}
|
|
|
|
protected function bar(): void {}
|
|
}
|
|
|
|
class B extends A implements I {
|
|
public function bat(): void {}
|
|
}',
|
|
],
|
|
'createIntersectionOfInterfaceAndClass' => [
|
|
'<?php
|
|
class A {
|
|
public function bat() : void {}
|
|
}
|
|
interface I {
|
|
public function baz();
|
|
}
|
|
|
|
function foo(I $i) : void {
|
|
if ($i instanceof A) {
|
|
$i->bat();
|
|
$i->baz();
|
|
}
|
|
}
|
|
|
|
function bar(A $a) : void {
|
|
if ($a instanceof I) {
|
|
$a->bat();
|
|
$a->baz();
|
|
}
|
|
}
|
|
|
|
class B extends A implements I {
|
|
public function baz() : void {}
|
|
}
|
|
|
|
foo(new B);
|
|
bar(new B);',
|
|
],
|
|
'unionOfArrayOrTraversable' => [
|
|
'<?php
|
|
function foo(iterable $iterable) : void {
|
|
if (\is_array($iterable) || $iterable instanceof \Traversable) {}
|
|
}',
|
|
],
|
|
'isTruthy' => [
|
|
'<?php
|
|
function f(string $s = null): string {
|
|
if ($s == true) {
|
|
return $s;
|
|
}
|
|
|
|
return "backup";
|
|
}',
|
|
],
|
|
'stringOrCallableArg' => [
|
|
'<?php
|
|
/**
|
|
* @param string|callable $param
|
|
*/
|
|
function f($param): void {}
|
|
f("is_array");',
|
|
],
|
|
'stringOrCallableOrObjectArg' => [
|
|
'<?php
|
|
/**
|
|
* @param string|callable|object $param
|
|
*/
|
|
function f($param): void {}
|
|
f("is_array");',
|
|
],
|
|
'intOrFloatArg' => [
|
|
'<?php
|
|
/**
|
|
* @param int|float $param
|
|
*/
|
|
function f($param): void {}
|
|
f(5.0);
|
|
f(5);',
|
|
],
|
|
'nullReplacement' => [
|
|
'<?php
|
|
/**
|
|
* @param string|null|false $a
|
|
* @return string|false $a
|
|
*/
|
|
function foo($a) {
|
|
if ($a === null) {
|
|
if (rand(0, 4) > 2) {
|
|
$a = "hello";
|
|
} else {
|
|
$a = false;
|
|
}
|
|
}
|
|
|
|
return $a;
|
|
}',
|
|
],
|
|
'nullableIntReplacement' => [
|
|
'<?php
|
|
$a = rand(0, 1) ? 5 : null;
|
|
|
|
$b = (bool)rand(0, 1);
|
|
|
|
if ($b || $a !== null) {
|
|
$a = 3;
|
|
}',
|
|
'assertions' => [
|
|
'$a' => 'int|null',
|
|
],
|
|
],
|
|
'eraseNullAfterInequalityCheck' => [
|
|
'<?php
|
|
$a = mt_rand(0, 1) ? mt_rand(-10, 10): null;
|
|
|
|
if ($a > 0) {
|
|
echo $a + 3;
|
|
}
|
|
|
|
if (0 < $a) {
|
|
echo $a + 3;
|
|
}',
|
|
],
|
|
'twoWrongsDontMakeARight' => [
|
|
'<?php
|
|
if (rand(0, 1)) {
|
|
$a = false;
|
|
} else {
|
|
$a = false;
|
|
}',
|
|
'assertions' => [
|
|
'$a' => 'false',
|
|
],
|
|
],
|
|
'instanceofStatic' => [
|
|
'<?php
|
|
abstract class Foo {
|
|
/**
|
|
* @return static[]
|
|
*/
|
|
abstract public static function getArr() : array;
|
|
|
|
/**
|
|
* @return static|null
|
|
*/
|
|
public static function getOne() {
|
|
$one = current(static::getArr());
|
|
return $one instanceof static ? $one : null;
|
|
}
|
|
}',
|
|
],
|
|
'isaStaticClass' => [
|
|
'<?php
|
|
abstract class Foo {
|
|
/**
|
|
* @return static[]
|
|
*/
|
|
abstract public static function getArr() : array;
|
|
|
|
/**
|
|
* @return static|null
|
|
*/
|
|
public static function getOne() {
|
|
$one = current(static::getArr());
|
|
return is_a($one, static::class, false) ? $one : null;
|
|
}
|
|
}',
|
|
],
|
|
'isAClass' => [
|
|
'<?php
|
|
class A {}
|
|
$a_class = rand(0, 1) ? A::class : "blargle";
|
|
if (is_a($a_class, A::class, true)) {
|
|
echo "cool";
|
|
}',
|
|
],
|
|
'specificArrayFields' => [
|
|
'<?php
|
|
/**
|
|
* @param array{field:string} $array
|
|
*/
|
|
function print_field($array) : void {
|
|
echo $array["field"];
|
|
}
|
|
|
|
/**
|
|
* @param array{field:string,otherField:string} $array
|
|
*/
|
|
function has_mix_of_fields($array) : void {
|
|
print_field($array);
|
|
}',
|
|
],
|
|
'numericOrStringPropertySet' => [
|
|
'<?php
|
|
/**
|
|
* @param string|null $b
|
|
* @psalm-suppress DocblockTypeContradiction
|
|
*/
|
|
function foo($b = null) : void {
|
|
if (is_numeric($b) || is_string($b)) {
|
|
takesNullableString($b);
|
|
}
|
|
}
|
|
|
|
function takesNullableString(?string $s) : void {}',
|
|
],
|
|
'falsyScalar' => [
|
|
'<?php
|
|
/**
|
|
* @param scalar|null $value
|
|
*/
|
|
function Foo($value = null) : bool {
|
|
if (!$value) {
|
|
return true;
|
|
}
|
|
return false;
|
|
}',
|
|
],
|
|
'numericStringAssertion' => [
|
|
'<?php
|
|
/**
|
|
* @param mixed $a
|
|
*/
|
|
function foo($a, string $b) : void {
|
|
if (is_numeric($b) && $a === $b) {
|
|
echo $a;
|
|
}
|
|
}',
|
|
],
|
|
'reconcileNullableStringWithWeakEquality' => [
|
|
'<?php
|
|
function foo(?string $s) : void {
|
|
if ($s == "hello" || $s == "goodbye") {
|
|
if ($s == "hello") {
|
|
echo "cool";
|
|
}
|
|
echo "cooler";
|
|
}
|
|
}',
|
|
],
|
|
'reconcileNullableStringWithStrictEqualityStrings' => [
|
|
'<?php
|
|
function foo(?string $s, string $a, string $b) : void {
|
|
if ($s === $a || $s === $b) {
|
|
if ($s === $a) {
|
|
echo "cool";
|
|
}
|
|
echo "cooler";
|
|
}
|
|
}',
|
|
],
|
|
'reconcileNullableStringWithWeakEqualityStrings' => [
|
|
'<?php
|
|
function foo(?string $s, string $a, string $b) : void {
|
|
if ($s == $a || $s == $b) {
|
|
if ($s == $a) {
|
|
echo "cool";
|
|
}
|
|
echo "cooler";
|
|
}
|
|
}',
|
|
],
|
|
'allowWeakEqualityScalarType' => [
|
|
'<?php
|
|
function foo(int $i) : void {
|
|
if ($i == "5") {}
|
|
if ("5" == $i) {}
|
|
if ($i == 5.0) {}
|
|
if (5.0 == $i) {}
|
|
if ($i == 0) {}
|
|
if (0 == $i) {}
|
|
if ($i == 0.0) {}
|
|
if (0.0 == $i) {}
|
|
}
|
|
function bar(float $i) : void {
|
|
$i = $i / 100.0;
|
|
if ($i == "5") {}
|
|
if ("5" == $i) {}
|
|
if ($i == 5) {}
|
|
if (5 == $i) {}
|
|
if ($i == "0") {}
|
|
if ("0" == $i) {}
|
|
if ($i == 0) {}
|
|
if (0 == $i) {}
|
|
}
|
|
function bat(string $i) : void {
|
|
if ($i == 5) {}
|
|
if (5 == $i) {}
|
|
if ($i == 5.0) {}
|
|
if (5.0 == $i) {}
|
|
if ($i == 0) {}
|
|
if (0 == $i) {}
|
|
if ($i == 0.0) {}
|
|
if (0.0 == $i) {}
|
|
}',
|
|
],
|
|
'filterSubclassBasedOnParentInstanceof' => [
|
|
'<?php
|
|
class A {}
|
|
class B extends A {
|
|
public function foo() : void {}
|
|
}
|
|
|
|
class C {}
|
|
class D extends C {}
|
|
|
|
$b_or_d = rand(0, 1) ? new B : new D;
|
|
|
|
if ($b_or_d instanceof A) {
|
|
$b_or_d->foo();
|
|
}',
|
|
],
|
|
'SKIPPED-isArrayOnArrayKeyOffset' => [
|
|
'<?php
|
|
/** @var array{s:array<mixed, array<int, string>|string>} */
|
|
$doc = [];
|
|
|
|
if (!is_array($doc["s"]["t"])) {
|
|
$doc["s"]["t"] = [$doc["s"]["t"]];
|
|
}',
|
|
'assertions' => [
|
|
'$doc[\'s\'][\'t\']' => 'array<int, string>',
|
|
],
|
|
],
|
|
'removeTrue' => [
|
|
'<?php
|
|
$a = rand(0, 1) ? new stdClass : true;
|
|
|
|
if ($a === true) {
|
|
exit;
|
|
}
|
|
|
|
function takesStdClass(stdClass $s) : void {}
|
|
takesStdClass($a);',
|
|
],
|
|
'noReconciliationInElseIf' => [
|
|
'<?php
|
|
class A {}
|
|
$a = rand(0, 1) ? new A : null;
|
|
|
|
if (rand(0, 1)) {
|
|
// do nothing
|
|
} elseif (!$a) {
|
|
$a = new A();
|
|
}
|
|
|
|
if ($a) {}',
|
|
],
|
|
'removeStringWithIsScalar' => [
|
|
'<?php
|
|
$a = rand(0, 1) ? "hello" : null;
|
|
|
|
if (is_scalar($a)) {
|
|
exit;
|
|
}',
|
|
'assertions' => [
|
|
'$a' => 'null',
|
|
],
|
|
],
|
|
'removeNullWithIsScalar' => [
|
|
'<?php
|
|
$a = rand(0, 1) ? "hello" : null;
|
|
|
|
if (!is_scalar($a)) {
|
|
exit;
|
|
}',
|
|
'assertions' => [
|
|
'$a' => 'string',
|
|
],
|
|
],
|
|
'scalarToNumeric' => [
|
|
'<?php
|
|
/**
|
|
* @param scalar $thing
|
|
*/
|
|
function Foo($thing) : void {
|
|
if (is_numeric($thing)) {}
|
|
}',
|
|
],
|
|
'filterSubclassBasedOnParentNegativeInstanceof' => [
|
|
'<?php
|
|
class Obj {}
|
|
class A extends Obj {}
|
|
class B extends A {}
|
|
class C extends Obj {}
|
|
class D extends C {}
|
|
|
|
function takesD(D $d) : void {}
|
|
|
|
/** @param B|D $bar */
|
|
function foo(Obj $bar) : void {
|
|
if (!$bar instanceof A) {
|
|
takesD($bar);
|
|
}
|
|
}',
|
|
],
|
|
'dontEliminateAssignOp' => [
|
|
'<?php
|
|
class Obj {}
|
|
class A extends Obj {}
|
|
class B extends A {}
|
|
class C extends Obj {}
|
|
class D extends C {}
|
|
class E extends C {}
|
|
|
|
function bar(Obj $node) : void {
|
|
if ($node instanceof B
|
|
|| $node instanceof D
|
|
|| $node instanceof E
|
|
) {
|
|
if ($node instanceof C) {}
|
|
if ($node instanceof D) {}
|
|
}
|
|
}',
|
|
],
|
|
'eliminateNonArrays' => [
|
|
'<?php
|
|
interface I {}
|
|
|
|
function takesArray(array $_a): void {}
|
|
|
|
/** @param string|I|string[]|I[] $p */
|
|
function eliminatesNonArray($p): void {
|
|
if (is_array($p)) {
|
|
takesArray($p);
|
|
}
|
|
}',
|
|
],
|
|
'eliminateNonIterable' => [
|
|
'<?php
|
|
/**
|
|
* @param iterable<string>|null $foo
|
|
*/
|
|
function d(?iterable $foo): void {
|
|
if (is_iterable($foo)) {
|
|
foreach ($foo as $f) {}
|
|
}
|
|
|
|
if (!is_iterable($foo)) {
|
|
|
|
} else {
|
|
foreach ($foo as $f) {}
|
|
}
|
|
}',
|
|
],
|
|
'isStringServerVar' => [
|
|
'<?php
|
|
if (is_string($_SERVER["abc"])) {
|
|
echo substr($_SERVER["abc"], 1, 2);
|
|
}',
|
|
],
|
|
'notObject' => [
|
|
'<?php
|
|
function f(): ?object {
|
|
return rand(0,1) ? new stdClass : null;
|
|
}
|
|
|
|
$data = f();
|
|
if (!$data) {}
|
|
if ($data) {}',
|
|
],
|
|
'reconcileWithInstanceof' => [
|
|
'<?php
|
|
class A {}
|
|
class B extends A {
|
|
public function b() : bool {
|
|
return (bool) rand(0, 1);
|
|
}
|
|
}
|
|
|
|
function bar(?A $a) : void {
|
|
if (!$a || ($a instanceof B && $a->b())) {}
|
|
}',
|
|
],
|
|
'reconcileFloatToEmpty' => [
|
|
'<?php
|
|
function bar(float $f) : void {
|
|
if (!$f) {}
|
|
}',
|
|
],
|
|
'scalarToBool' => [
|
|
'<?php
|
|
/** @param mixed $s */
|
|
function foo($s) : void {
|
|
if (!is_scalar($s)) {
|
|
return;
|
|
}
|
|
|
|
if (is_bool($s)) {}
|
|
if (!is_bool($s)) {}
|
|
if (is_string($s)) {}
|
|
if (!is_string($s)) {}
|
|
if (is_int($s)) {}
|
|
if (!is_int($s)) {}
|
|
if (is_float($s)) {}
|
|
if (!is_float($s)) {}
|
|
}',
|
|
],
|
|
'removeFromArray' => [
|
|
'<?php
|
|
/**
|
|
* @param array<string> $v
|
|
*/
|
|
function foo(array $v) : void {
|
|
if (!isset($v[0])) {
|
|
return;
|
|
}
|
|
|
|
if ($v[0] === " ") {
|
|
array_shift($v);
|
|
}
|
|
|
|
if (!isset($v[0])) {}
|
|
}',
|
|
],
|
|
'arrayEquality' => [
|
|
'<?php
|
|
/**
|
|
* @param array<string, array<array-key, string|int>> $haystack
|
|
* @param array<array-key, int|string> $needle
|
|
*/
|
|
function foo(array $haystack, array $needle) : void {
|
|
foreach ($haystack as $arr) {
|
|
if ($arr === $needle) {}
|
|
}
|
|
}',
|
|
],
|
|
'classResolvesBackToSelfAfterComparison' => [
|
|
'<?php
|
|
class A {}
|
|
class B extends A {}
|
|
function getA() : A {
|
|
return new A();
|
|
}
|
|
|
|
$a = getA();
|
|
if ($a instanceof B) {
|
|
$a = new B;
|
|
}',
|
|
'assertions' => [
|
|
'$a' => 'A',
|
|
],
|
|
],
|
|
'isNumericCanBeScalar' => [
|
|
'<?php
|
|
/** @param scalar $val */
|
|
function foo($val) : void {
|
|
if (!is_numeric($val)) {}
|
|
}',
|
|
],
|
|
'classStringCanBeFalsy' => [
|
|
'<?php
|
|
/** @param class-string<stdClass>|null $val */
|
|
function foo(?string $val) : void {
|
|
if (!$val) {}
|
|
if ($val) {}
|
|
}',
|
|
],
|
|
'allowStringToObjectReconciliation' => [
|
|
'<?php
|
|
/**
|
|
* @param string|object $maybe
|
|
*
|
|
* @throws InvalidArgumentException but it should not
|
|
*/
|
|
function foo($maybe) : string {
|
|
/** @psalm-suppress DocblockTypeContradiction */
|
|
if ( ! is_string($maybe) && ! is_object($maybe)) {
|
|
throw new InvalidArgumentException("bad");
|
|
}
|
|
|
|
return is_string($maybe) ? $maybe : get_class($maybe);
|
|
}',
|
|
],
|
|
'allowObjectToStringReconciliation' => [
|
|
'<?php
|
|
/**
|
|
* @param string|object $maybe
|
|
*
|
|
* @throws InvalidArgumentException but it should not
|
|
*/
|
|
function bar($maybe) : string {
|
|
/** @psalm-suppress DocblockTypeContradiction */
|
|
if ( ! is_string($maybe) && ! is_object($maybe)) {
|
|
throw new InvalidArgumentException("bad");
|
|
}
|
|
|
|
return is_object($maybe) ? get_class($maybe) : $maybe;
|
|
}',
|
|
],
|
|
'removeArrayWithIterableCheck' => [
|
|
'<?php
|
|
$s = rand(0,1) ? "foo" : [1];
|
|
if (!is_iterable($s)) {
|
|
strlen($s);
|
|
}',
|
|
],
|
|
'removeIterableWithIterableCheck' => [
|
|
'<?php
|
|
/** @var string|iterable */
|
|
$s = rand(0,1) ? "foo" : [1];
|
|
if (!is_iterable($s)) {
|
|
strlen($s);
|
|
}',
|
|
],
|
|
'removeArrayWithIterableCheckWithExit' => [
|
|
'<?php
|
|
$a = rand(0,1) ? "foo" : [1];
|
|
if (is_iterable($a)) {
|
|
return;
|
|
}
|
|
strlen($a);',
|
|
],
|
|
'removeIterableWithIterableCheckWithExit' => [
|
|
'<?php
|
|
/** @var string|iterable */
|
|
$a = rand(0,1) ? "foo" : [1];
|
|
if (is_iterable($a)) {
|
|
return;
|
|
}
|
|
strlen($a);',
|
|
],
|
|
'removeCallable' => [
|
|
'<?php
|
|
$s = rand(0,1) ? "strlen" : [1];
|
|
if (!is_callable($s)) {
|
|
array_pop($s);
|
|
}
|
|
|
|
$a = rand(0, 1) ? (function(): void {}) : 1.1;
|
|
if (!is_callable($a)) {
|
|
echo $a;
|
|
}',
|
|
],
|
|
'removeCallableWithAssertion' => [
|
|
'<?php
|
|
/**
|
|
* @param mixed $p
|
|
* @psalm-assert !callable $p
|
|
* @throws TypeError
|
|
*/
|
|
function assertIsNotCallable($p): void { if (!is_callable($p)) throw new TypeError; }
|
|
|
|
/** @return callable|float */
|
|
function f() { return rand(0,1) ? "f" : 1.1; }
|
|
|
|
$a = f();
|
|
assert(!is_callable($a));
|
|
|
|
$b = f();
|
|
assertIsNotCallable($b);
|
|
|
|
atan($a);
|
|
atan($b);',
|
|
],
|
|
'PHP71-removeNonCallable' => [
|
|
'<?php
|
|
$f = rand(0, 1) ? "strlen" : 1.1;
|
|
if (is_callable($f)) {
|
|
Closure::fromCallable($f);
|
|
}',
|
|
],
|
|
'compareObjectLikeToArray' => [
|
|
'<?php
|
|
/**
|
|
* @param array<"from"|"to", bool> $a
|
|
* @return array{from:bool, to: bool}
|
|
*/
|
|
function foo(array $a) : array {
|
|
return $a;
|
|
}',
|
|
],
|
|
'dontChangeScalar' => [
|
|
'<?php
|
|
/**
|
|
* @param scalar|null $val
|
|
*/
|
|
function foo($val) : ? bool {
|
|
if ("1" === $val || 1 === $val) {
|
|
return true;
|
|
} elseif ("0" === $val || 0 === $val) {
|
|
return false;
|
|
}
|
|
|
|
return null;
|
|
}',
|
|
],
|
|
'emptyArrayCheck' => [
|
|
'<?php
|
|
/**
|
|
* @param non-empty-array $x
|
|
*/
|
|
function example(array $x): void {}
|
|
|
|
/** @var array */
|
|
$x = [];
|
|
if ($x !== []) {
|
|
example($x);
|
|
}',
|
|
],
|
|
'emptyArrayCheckInverse' => [
|
|
'<?php
|
|
/**
|
|
* @param non-empty-array $x
|
|
*/
|
|
function example(array $x): void {}
|
|
|
|
/** @var array */
|
|
$x = [];
|
|
if ($x === []) {
|
|
} else {
|
|
example($x);
|
|
}',
|
|
],
|
|
'allowNumericToFoldIntoType' => [
|
|
'<?php
|
|
/**
|
|
* @param mixed $width
|
|
* @param mixed $height
|
|
*
|
|
* @throws RuntimeException
|
|
*/
|
|
function Foo($width, $height) : void {
|
|
if (!is_numeric($width) || !is_numeric($height)) {
|
|
throw new RuntimeException("Width & Height were not numeric!");
|
|
}
|
|
|
|
echo sprintf("padding-top:%s%%;", 100 * ($height/$width));
|
|
}',
|
|
],
|
|
'notEmptyCheckOnMixedInTernary' => [
|
|
'<?php
|
|
$a = !empty($_SERVER["HTTPS"]) && $_SERVER["HTTPS"] !== "off" ? true : false;',
|
|
],
|
|
'notEmptyCheckOnMixedInIf' => [
|
|
'<?php
|
|
if (!empty($_SERVER["HTTPS"]) && $_SERVER["HTTPS"] !== "off") {
|
|
$a = true;
|
|
} else {
|
|
$a = false;
|
|
}',
|
|
],
|
|
'dontRewriteNullableArrayAfterEmptyCheck' => [
|
|
'<?php
|
|
/**
|
|
* @param array{x:int,y:int}|null $start_pos
|
|
* @return array{x:int,y:int}|null
|
|
*/
|
|
function foo(?array $start_pos) : ?array {
|
|
if ($start_pos) {}
|
|
|
|
return $start_pos;
|
|
}',
|
|
],
|
|
'falseEqualsBoolean' => [
|
|
'<?php
|
|
class A {}
|
|
class B extends A {
|
|
public function foo() : void {}
|
|
}
|
|
class C extends A {
|
|
public function foo() : void {}
|
|
}
|
|
function bar(A $a) : void {
|
|
if (false === (!$a instanceof B || !$a instanceof C)) {
|
|
return;
|
|
}
|
|
$a->foo();
|
|
}
|
|
function baz(A $a) : void {
|
|
if ((!$a instanceof B || !$a instanceof C) === false) {
|
|
return;
|
|
}
|
|
$a->foo();
|
|
}',
|
|
],
|
|
'selfInstanceofStatic' => [
|
|
'<?php
|
|
class A {
|
|
public function foo(self $value): void {
|
|
if ($value instanceof static) {}
|
|
}
|
|
}',
|
|
],
|
|
'reconcileCallable' => [
|
|
'<?php
|
|
function reflectCallable(callable $callable): ReflectionFunctionAbstract {
|
|
if (\is_array($callable)) {
|
|
return new \ReflectionMethod($callable[0], $callable[1]);
|
|
} elseif ($callable instanceof \Closure || \is_string($callable)) {
|
|
return new \ReflectionFunction($callable);
|
|
} elseif (\is_object($callable)) {
|
|
return new \ReflectionMethod($callable, "__invoke");
|
|
} else {
|
|
throw new \InvalidArgumentException("Bad");
|
|
}
|
|
}',
|
|
],
|
|
'noLeakyClassType' => [
|
|
'<?php
|
|
class A {
|
|
public array $foo = [];
|
|
public array $bar = [];
|
|
|
|
public function setter() : void {
|
|
if ($this->foo) {
|
|
$this->foo = [];
|
|
}
|
|
}
|
|
|
|
public function iffer() : bool {
|
|
return $this->foo || $this->bar;
|
|
}
|
|
}',
|
|
],
|
|
'noLeakyForeachType' => [
|
|
'<?php
|
|
|
|
class A {
|
|
/** @var mixed */
|
|
public $_array_value;
|
|
|
|
private function getArrayValue() : ?array {
|
|
return rand(0, 1) ? [] : null;
|
|
}
|
|
|
|
public function setValue(string $var) : void {
|
|
$this->_array_value = $this->getArrayValue();
|
|
|
|
if ($this->_array_value !== null && !count($this->_array_value)) {
|
|
return;
|
|
}
|
|
|
|
switch ($var) {
|
|
case "a":
|
|
foreach ($this->_array_value ?: [] as $v) {}
|
|
break;
|
|
|
|
case "b":
|
|
foreach ($this->_array_value ?: [] as $v) {}
|
|
break;
|
|
}
|
|
}
|
|
}',
|
|
[],
|
|
['MixedAssignment'],
|
|
],
|
|
'nonEmptyThing' => [
|
|
'<?php
|
|
/** @param mixed $clips */
|
|
function foo($clips, bool $found, int $id) : void {
|
|
if ($found === false) {
|
|
$clips = [];
|
|
}
|
|
|
|
$i = array_search($id, $clips);
|
|
|
|
if ($i !== false) {
|
|
unset($clips[$i]);
|
|
}
|
|
}',
|
|
[],
|
|
['MixedArgument', 'MixedArrayAccess', 'MixedAssignment', 'MixedArrayOffset'],
|
|
],
|
|
'allowNonEmptyArrayComparison' => [
|
|
'<?php
|
|
/**
|
|
* @param non-empty-array $a
|
|
* @param array<string> $b
|
|
*/
|
|
function foo(array $a, array $b) : void {
|
|
if ($a === $b) {}
|
|
}',
|
|
],
|
|
];
|
|
}
|
|
|
|
/**
|
|
* @return iterable<string,array{string,error_message:string,2?:string[],3?:bool,4?:string}>
|
|
*/
|
|
public function providerInvalidCodeParse()
|
|
{
|
|
return [
|
|
'makeNonNullableNull' => [
|
|
'<?php
|
|
class A { }
|
|
$a = new A();
|
|
if ($a === null) {
|
|
}',
|
|
'error_message' => 'TypeDoesNotContainNull',
|
|
],
|
|
'makeInstanceOfThingInElseif' => [
|
|
'<?php
|
|
class A { }
|
|
class B { }
|
|
class C { }
|
|
$a = rand(0, 10) > 5 ? new A(): new B();
|
|
if ($a instanceof A) {
|
|
} elseif ($a instanceof C) {
|
|
}',
|
|
'error_message' => 'TypeDoesNotContainType',
|
|
],
|
|
'functionValueIsNotType' => [
|
|
'<?php
|
|
if (json_last_error() === "5") { }',
|
|
'error_message' => 'TypeDoesNotContainType',
|
|
],
|
|
'stringIsNotTnt' => [
|
|
'<?php
|
|
if (5 === "5") { }',
|
|
'error_message' => 'TypeDoesNotContainType',
|
|
],
|
|
'stringIsNotNull' => [
|
|
'<?php
|
|
if (5 === null) { }',
|
|
'error_message' => 'TypeDoesNotContainNull',
|
|
],
|
|
'stringIsNotFalse' => [
|
|
'<?php
|
|
if (5 === false) { }',
|
|
'error_message' => 'TypeDoesNotContainType',
|
|
],
|
|
'typeTransformation' => [
|
|
'<?php
|
|
$a = "5";
|
|
|
|
if (is_numeric($a)) {
|
|
if (is_int($a)) {
|
|
echo $a;
|
|
}
|
|
}',
|
|
'error_message' => 'TypeDoesNotContainType',
|
|
],
|
|
'dontEraseNullAfterLessThanCheck' => [
|
|
'<?php
|
|
$a = mt_rand(0, 1) ? mt_rand(-10, 10): null;
|
|
|
|
if ($a < 0) {
|
|
echo $a + 3;
|
|
}',
|
|
'error_message' => 'PossiblyNullOperand',
|
|
],
|
|
'dontEraseNullAfterGreaterThanCheck' => [
|
|
'<?php
|
|
$a = mt_rand(0, 1) ? mt_rand(-10, 10): null;
|
|
|
|
if (0 > $a) {
|
|
echo $a + 3;
|
|
}',
|
|
'error_message' => 'PossiblyNullOperand',
|
|
],
|
|
'nonRedundantConditionGivenDocblockType' => [
|
|
'<?php
|
|
/** @param array[] $arr */
|
|
function foo(array $arr) : void {
|
|
if ($arr === "hello") {}
|
|
}',
|
|
'error_message' => 'TypeDoesNotContainType',
|
|
],
|
|
'lessSpecificArrayFields' => [
|
|
'<?php
|
|
/**
|
|
* @param array{field:string, otherField:string} $array
|
|
*/
|
|
function print_field($array) : void {
|
|
echo $array["field"] . " " . $array["otherField"];
|
|
}
|
|
|
|
print_field(["field" => "name"]);',
|
|
'error_message' => 'InvalidArgument',
|
|
],
|
|
'intersectionIncorrect' => [
|
|
'<?php
|
|
interface I {
|
|
public function bat(): void;
|
|
}
|
|
|
|
interface C {}
|
|
|
|
/** @param I&C $a */
|
|
function takesIandC($a): void {}
|
|
|
|
class A {
|
|
public function foo(): void {
|
|
if ($this instanceof I) {
|
|
takesIandC($this);
|
|
}
|
|
}
|
|
}',
|
|
'error_message' => 'InvalidArgument',
|
|
],
|
|
'catchTypeMismatchInBinaryOp' => [
|
|
'<?php
|
|
/** @return array<int, string|int> */
|
|
function getStrings(): array {
|
|
return ["hello", "world", 50];
|
|
}
|
|
|
|
$a = getStrings();
|
|
|
|
if (is_bool($a[0]) && $a[0]) {}',
|
|
'error_message' => 'DocblockTypeContradiction',
|
|
],
|
|
'preventWeakEqualityToObject' => [
|
|
'<?php
|
|
function foo(int $i, stdClass $s) : void {
|
|
if ($i == $s) {}
|
|
}',
|
|
'error_message' => 'TypeDoesNotContainType',
|
|
],
|
|
'properReconciliationInElseIf' => [
|
|
'<?php
|
|
class A {}
|
|
$a = rand(0, 1) ? new A : null;
|
|
|
|
if (rand(0, 1)) {
|
|
$a = new A();
|
|
} elseif (!$a) {
|
|
$a = new A();
|
|
}
|
|
|
|
if ($a) {}',
|
|
'error_message' => 'RedundantCondition',
|
|
],
|
|
'allRemovalOfStringWithIsScalar' => [
|
|
'<?php
|
|
$a = rand(0, 1) ? "hello" : "goodbye";
|
|
|
|
if (is_scalar($a)) {
|
|
exit;
|
|
}',
|
|
'error_message' => 'RedundantCondition',
|
|
],
|
|
'noRemovalOfStringWithIsScalar' => [
|
|
'<?php
|
|
$a = rand(0, 1) ? "hello" : "goodbye";
|
|
|
|
if (!is_scalar($a)) {
|
|
exit;
|
|
}',
|
|
'error_message' => 'TypeDoesNotContainType',
|
|
],
|
|
'impossibleNullEquality' => [
|
|
'<?php
|
|
$i = 5;
|
|
echo $i === null;',
|
|
'error_message' => 'TypeDoesNotContainNull',
|
|
],
|
|
'impossibleTrueEquality' => [
|
|
'<?php
|
|
$i = 5;
|
|
echo $i === true;',
|
|
'error_message' => 'TypeDoesNotContainType',
|
|
],
|
|
'impossibleFalseEquality' => [
|
|
'<?php
|
|
$i = 5;
|
|
echo $i === false;',
|
|
'error_message' => 'TypeDoesNotContainType',
|
|
],
|
|
'impossibleNumberEquality' => [
|
|
'<?php
|
|
$i = 5;
|
|
echo $i === 3;',
|
|
'error_message' => 'TypeDoesNotContainType',
|
|
],
|
|
'SKIPPED-noIntersectionOfArrayOrTraversable' => [
|
|
'<?php
|
|
function foo(iterable $iterable) : void {
|
|
if (\is_array($iterable) && $iterable instanceof \Traversable) {}
|
|
}',
|
|
'error_message' => 'TypeDoesNotContainType',
|
|
],
|
|
'scalarToBoolContradiction' => [
|
|
'<?php
|
|
/** @param mixed $s */
|
|
function foo($s) : void {
|
|
if (!is_scalar($s)) {
|
|
return;
|
|
}
|
|
|
|
if (!is_bool($s)) {
|
|
if (is_bool($s)) {}
|
|
}
|
|
}',
|
|
'error_message' => 'ParadoxicalCondition',
|
|
],
|
|
'noCrashWhenCastingArray' => [
|
|
'<?php
|
|
function foo() : string {
|
|
return (object) ["a" => 1, "b" => 2];
|
|
}',
|
|
'error_message' => 'InvalidReturnStatement',
|
|
],
|
|
'preventStrongEqualityScalarType' => [
|
|
'<?php
|
|
function bar(float $f) : void {
|
|
if ($f === 0) {}
|
|
}',
|
|
'error_message' => 'TypeDoesNotContainType',
|
|
],
|
|
'preventYodaStrongEqualityScalarType' => [
|
|
'<?php
|
|
function bar(float $f) : void {
|
|
if (0 === $f) {}
|
|
}',
|
|
'error_message' => 'TypeDoesNotContainType',
|
|
],
|
|
'classCannotNotBeSelf' => [
|
|
'<?php
|
|
class A {}
|
|
class B extends A {}
|
|
function getA() : A {
|
|
return new A();
|
|
}
|
|
|
|
$a = getA();
|
|
if ($a instanceof B) {
|
|
$a = new B;
|
|
}
|
|
|
|
if ($a instanceof A) {}',
|
|
'error_message' => 'RedundantCondition',
|
|
],
|
|
'preventImpossibleComparisonToTrue' => [
|
|
'<?php
|
|
/** @return false|string */
|
|
function firstChar(string $s) {
|
|
return empty($s) ? false : $s[0];
|
|
}
|
|
|
|
if (true === firstChar("sdf")) {}',
|
|
'error_message' => 'DocblockTypeContradiction',
|
|
],
|
|
'preventAlwaysPossibleComparisonToTrue' => [
|
|
'<?php
|
|
/** @return false|string */
|
|
function firstChar(string $s) {
|
|
return empty($s) ? false : $s[0];
|
|
}
|
|
|
|
if (true !== firstChar("sdf")) {}',
|
|
'error_message' => 'RedundantConditionGivenDocblockType',
|
|
],
|
|
'preventAlwaysImpossibleComparisonToFalse' => [
|
|
'<?php
|
|
function firstChar(string $s) : string { return $s; }
|
|
|
|
if (false === firstChar("sdf")) {}',
|
|
'error_message' => 'TypeDoesNotContainType',
|
|
],
|
|
'preventAlwaysPossibleComparisonToFalse' => [
|
|
'<?php
|
|
function firstChar(string $s) : string { return $s; }
|
|
|
|
if (false !== firstChar("sdf")) {}',
|
|
'error_message' => 'RedundantCondition',
|
|
],
|
|
];
|
|
}
|
|
}
|