mirror of
https://github.com/danog/psalm.git
synced 2024-11-26 20:34:47 +01:00
879 lines
30 KiB
PHP
879 lines
30 KiB
PHP
<?php
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namespace Psalm\Tests;
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use const DIRECTORY_SEPARATOR;
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class ClosureTest extends TestCase
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{
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use Traits\InvalidCodeAnalysisTestTrait;
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use Traits\ValidCodeAnalysisTestTrait;
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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(): iterable
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{
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return [
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'byRefUseVar' => [
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'<?php
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/** @return void */
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function run_function(\Closure $fnc) {
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$fnc();
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}
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/**
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* @return void
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* @psalm-suppress MixedArgument
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*/
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function f() {
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run_function(
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/**
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* @return void
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*/
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function() use(&$data) {
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$data = 1;
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}
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);
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echo $data;
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}
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f();',
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],
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'inferredArg' => [
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'<?php
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$bar = ["foo", "bar"];
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$bam = array_map(
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function(string $a) {
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return $a . "blah";
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},
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$bar
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);',
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],
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'inferredArgArrowFunction' => [
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'<?php
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$bar = ["foo", "bar"];
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$bam = array_map(
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fn(string $a) => $a . "blah",
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$bar
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);',
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'assertions' => [],
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'error_levels' => [],
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'7.4'
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],
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'varReturnType' => [
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'<?php
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$add_one = function(int $a) : int {
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return $a + 1;
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};
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$a = $add_one(1);',
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'assertions' => [
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'$a' => 'int',
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],
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],
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'varReturnTypeArray' => [
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'<?php
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$add_one = fn(int $a) : int => $a + 1;
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$a = $add_one(1);',
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'assertions' => [
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'$a' => 'int',
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],
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'error_levels' => [],
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'7.4'
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],
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'correctParamType' => [
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'<?php
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$take_string = function(string $s): string { return $s; };
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$take_string("string");',
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],
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'arrayMapClosureVar' => [
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'<?php
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$mirror = function(int $i) : int { return $i; };
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$a = array_map($mirror, [1, 2, 3]);',
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'assertions' => [
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'$a' => 'array{int, int, int}',
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],
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],
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'inlineCallableFunction' => [
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'<?php
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class A {
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function bar(): void {
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function foobar(int $a, int $b): int {
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return $a > $b ? 1 : 0;
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}
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$arr = [5, 4, 3, 1, 2];
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usort($arr, "fooBar");
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}
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}',
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],
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'closureSelf' => [
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'<?php
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class A
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{
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/**
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* @var self[]
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*/
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private $subitems;
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/**
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* @param self[] $in
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*/
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public function __construct(array $in = [])
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{
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array_map(function(self $i): self { return $i; }, $in);
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$this->subitems = array_map(
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function(self $i): self {
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return $i;
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},
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$in
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);
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}
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}
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new A([new A, new A]);',
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],
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'arrayMapVariadicClosureArg' => [
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'<?php
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$a = array_map(
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function(int $type, string ...$args):string {
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return "hello";
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},
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[1, 2, 3]
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);',
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],
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'returnsTypedClosure' => [
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'<?php
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/**
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* @param Closure(int):int $f
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* @param Closure(int):int $g
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*
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* @return Closure(int):int
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*/
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function foo(Closure $f, Closure $g) : Closure {
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return function (int $x) use ($f, $g) : int {
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return $f($g($x));
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};
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}',
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],
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'returnsTypedClosureArrow' => [
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'<?php
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/**
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* @param Closure(int):int $f
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* @param Closure(int):int $g
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*
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* @return Closure(int):int
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*/
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function foo(Closure $f, Closure $g) : Closure {
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return fn(int $x):int => $f($g($x));
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}',
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'assertions' => [],
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'error_levels' => [],
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'7.4'
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],
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'returnsTypedClosureWithClasses' => [
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'<?php
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class A {}
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class B {}
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class C {}
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/**
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* @param Closure(B):A $f
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* @param Closure(C):B $g
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*
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* @return Closure(C):A
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*/
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function foo(Closure $f, Closure $g) : Closure {
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return function (C $x) use ($f, $g) : A {
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return $f($g($x));
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};
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}
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$a = foo(
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function(B $b) : A { return new A;},
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function(C $c) : B { return new B;}
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)(new C);',
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'assertions' => [
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'$a' => 'A',
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],
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],
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'returnsTypedClosureWithSubclassParam' => [
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'<?php
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class A {}
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class B {}
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class C {}
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class C2 extends C {}
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/**
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* @param Closure(B):A $f
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* @param Closure(C):B $g
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*
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* @return Closure(C2):A
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*/
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function foo(Closure $f, Closure $g) : Closure {
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return function (C $x) use ($f, $g) : A {
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return $f($g($x));
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};
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}
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$a = foo(
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function(B $b) : A { return new A;},
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function(C $c) : B { return new B;}
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)(new C2);',
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'assertions' => [
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'$a' => 'A',
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],
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],
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'returnsTypedClosureWithParentReturn' => [
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'<?php
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class A {}
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class B {}
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class C {}
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class A2 extends A {}
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/**
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* @param Closure(B):A2 $f
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* @param Closure(C):B $g
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*
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* @return Closure(C):A
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*/
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function foo(Closure $f, Closure $g) : Closure {
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return function (C $x) use ($f, $g) : A2 {
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return $f($g($x));
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};
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}
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$a = foo(
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function(B $b) : A2 { return new A2;},
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function(C $c) : B { return new B;}
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)(new C);',
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'assertions' => [
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'$a' => 'A',
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],
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],
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'inferArrayMapReturnTypeWithoutTypehints' => [
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'<?php
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/**
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* @param array{0:string,1:string}[] $ret
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* @return array{0:string,1:int}[]
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*/
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function f(array $ret) : array
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{
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return array_map(
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/**
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* @param array{0:string,1:string} $row
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*/
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function (array $row) {
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return [
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strval($row[0]),
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intval($row[1]),
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];
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},
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$ret
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);
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}',
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'assertions' => [],
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'error_levels' => ['MissingClosureReturnType'],
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],
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'inferArrayMapReturnTypeWithTypehints' => [
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'<?php
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/**
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* @param array{0:string,1:string}[] $ret
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* @return array{0:string,1:int}[]
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*/
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function f(array $ret): array
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{
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return array_map(
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/**
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* @param array{0:string,1:string} $row
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*/
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function (array $row): array {
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return [
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strval($row[0]),
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intval($row[1]),
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];
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},
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$ret
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);
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}',
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],
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'invokableProperties' => [
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'<?php
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class A {
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public function __invoke(): bool { return true; }
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}
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class C {
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/** @var A $invokable */
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private $invokable;
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public function __construct(A $invokable) {
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$this->invokable = $invokable;
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}
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public function callTheInvokableDirectly(): bool {
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return ($this->invokable)();
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}
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public function callTheInvokableIndirectly(): bool {
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$r = $this->invokable;
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return $r();
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}
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}',
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],
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'PHP71-mirrorCallableParams' => [
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'<?php
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namespace NS;
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use Closure;
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/** @param Closure(int):bool $c */
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function acceptsIntToBool(Closure $c): void {}
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acceptsIntToBool(Closure::fromCallable(function(int $n): bool { return $n > 0; }));',
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],
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'singleLineClosures' => [
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'<?php
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$a = function() : Closure { return function() : string { return "hello"; }; };
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$b = $a()();',
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'assertions' => [
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'$a' => 'pure-Closure():pure-Closure():string(hello)',
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'$b' => 'string',
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],
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],
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'voidReturningArrayMap' => [
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'<?php
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array_map(
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function(int $i) : void {
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echo $i;
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},
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[1, 2, 3]
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);',
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],
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'PHP71-closureFromCallableInvokableNamedClass' => [
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'<?php
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namespace NS;
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use Closure;
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/** @param Closure(int):bool $c */
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function acceptsIntToBool(Closure $c): void {}
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class NamedInvokable {
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public function __invoke(int $p): bool {
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return $p > 0;
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}
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}
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acceptsIntToBool(Closure::fromCallable(new NamedInvokable));',
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],
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'PHP71-closureFromCallableInvokableAnonymousClass' => [
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'<?php
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namespace NS;
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use Closure;
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/** @param Closure(int):bool $c */
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function acceptsIntToBool(Closure $c): void {}
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$anonInvokable = new class {
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public function __invoke(int $p):bool {
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return $p > 0;
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}
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};
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acceptsIntToBool(Closure::fromCallable($anonInvokable));',
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],
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'PHP71-publicCallableFromInside' => [
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'<?php
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class Base {
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public function publicMethod() : void {}
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}
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class Example extends Base {
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public function test() : Closure {
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return Closure::fromCallable([$this, "publicMethod"]);
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}
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}',
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],
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'PHP71-protectedCallableFromInside' => [
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'<?php
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class Base {
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protected function protectedMethod() : void {}
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}
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class Example extends Base {
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public function test() : Closure {
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return Closure::fromCallable([$this, "protectedMethod"]);
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}
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}',
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],
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'allowClosureWithNarrowerReturn' => [
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'<?php
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class A {}
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class B extends A {}
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/**
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* @param Closure():A $x
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*/
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function accept_closure($x) : void {
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$x();
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}
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accept_closure(
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function () : B {
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return new B();
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}
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);',
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],
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'allowCallableWithWiderParam' => [
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'<?php
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class A {}
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class B extends A {}
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/**
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* @param Closure(B $a):A $x
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*/
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function accept_closure($x) : void {
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$x(new B());
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}
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accept_closure(
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function (A $a) : A {
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return $a;
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}
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);',
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],
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'allowCallableWithOptionalArg' => [
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'<?php
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/**
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* @param Closure():int $x
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*/
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function accept_closure($x) : void {
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$x();
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}
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accept_closure(
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function (int $x = 5) : int {
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return $x;
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}
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);',
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],
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'refineCallableTypeWithTypehint' => [
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'<?php
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/** @param string[][] $arr */
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function foo(array $arr) : void {
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array_map(
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function(array $a) {
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return reset($a);
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},
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$arr
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);
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}'
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],
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'refineCallableTypeWithoutTypehint' => [
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'<?php
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/** @param string[][] $arr */
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function foo(array $arr) : void {
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array_map(
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function($a) {
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return reset($a);
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},
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$arr
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);
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}'
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],
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'inferGeneratorReturnType' => [
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'<?php
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function accept(Generator $gen): void {}
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accept(
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(function() {
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yield;
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return 42;
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})()
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);'
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],
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'callingInvokeOnClosureIsSameAsCallingDirectly' => [
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'<?php
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class A {
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/** @var Closure(int):int */
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private Closure $a;
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public function __construct() {
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$this->a = fn(int $a) : int => $a + 5;
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}
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public function invoker(int $b) : int {
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return $this->a->__invoke($b);
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}
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}',
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'assertions' => [],
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'error_levels' => [],
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'7.4'
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],
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'annotateShortClosureReturn' => [
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'<?php
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/** @psalm-suppress MissingReturnType */
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function returnsBool() { return true; }
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$a = fn() : bool => /** @var bool */ returnsBool();',
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[],
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[],
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'7.4'
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],
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'rememberParentAssertions' => [
|
|
'<?php
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class A {
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public ?A $a = null;
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public function foo() : void {}
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}
|
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|
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function doFoo(A $a): void {
|
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if ($a->a instanceof A) {
|
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function () use ($a): void {
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$a->a->foo();
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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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|
|
/**
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* @return iterable<string,array{string,error_message:string,2?:string[],3?:bool,4?:string}>
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*/
|
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public function providerInvalidCodeParse(): iterable
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{
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return [
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'wrongArg' => [
|
|
'<?php
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$bar = ["foo", "bar"];
|
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|
|
$bam = array_map(
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function(int $a): int {
|
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return $a + 1;
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},
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$bar
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);',
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'error_message' => 'InvalidScalarArgument',
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],
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'noReturn' => [
|
|
'<?php
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$bar = ["foo", "bar"];
|
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|
|
$bam = array_map(
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function(string $a): string {
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},
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$bar
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);',
|
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'error_message' => 'InvalidReturnType',
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],
|
|
'possiblyNullFunctionCall' => [
|
|
'<?php
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/**
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* @var Closure|null $foo
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*/
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$foo = null;
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|
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$foo =
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/**
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* @param mixed $bar
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* @psalm-suppress MixedFunctionCall
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*/
|
|
function ($bar) use (&$foo): string
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{
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if (is_array($bar)) {
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return $foo($bar);
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}
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|
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return $bar;
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};',
|
|
'error_message' => 'MixedReturnStatement',
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|
],
|
|
'wrongParamType' => [
|
|
'<?php
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|
$take_string = function(string $s): string { return $s; };
|
|
$take_string(42);',
|
|
'error_message' => 'InvalidScalarArgument',
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],
|
|
'missingClosureReturnType' => [
|
|
'<?php
|
|
$a = function() {
|
|
return "foo";
|
|
};',
|
|
'error_message' => 'MissingClosureReturnType',
|
|
],
|
|
'returnsTypedClosureWithBadReturnType' => [
|
|
'<?php
|
|
/**
|
|
* @param Closure(int):int $f
|
|
* @param Closure(int):int $g
|
|
*
|
|
* @return Closure(int):string
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|
*/
|
|
function foo(Closure $f, Closure $g) : Closure {
|
|
return function (int $x) use ($f, $g) : int {
|
|
return $f($g($x));
|
|
};
|
|
}',
|
|
'error_message' => 'InvalidReturnStatement',
|
|
],
|
|
'returnsTypedCallableWithBadReturnType' => [
|
|
'<?php
|
|
/**
|
|
* @param Closure(int):int $f
|
|
* @param Closure(int):int $g
|
|
*
|
|
* @return callable(int):string
|
|
*/
|
|
function foo(Closure $f, Closure $g) : callable {
|
|
return function (int $x) use ($f, $g) : int {
|
|
return $f($g($x));
|
|
};
|
|
}',
|
|
'error_message' => 'InvalidReturnStatement',
|
|
],
|
|
'returnsTypedClosureWithBadParamType' => [
|
|
'<?php
|
|
/**
|
|
* @param Closure(int):int $f
|
|
* @param Closure(int):int $g
|
|
*
|
|
* @return Closure(string):int
|
|
*/
|
|
function foo(Closure $f, Closure $g) : Closure {
|
|
return function (int $x) use ($f, $g) : int {
|
|
return $f($g($x));
|
|
};
|
|
}',
|
|
'error_message' => 'InvalidReturnStatement',
|
|
],
|
|
'returnsTypedCallableWithBadParamType' => [
|
|
'<?php
|
|
/**
|
|
* @param Closure(int):int $f
|
|
* @param Closure(int):int $g
|
|
*
|
|
* @return callable(string):int
|
|
*/
|
|
function foo(Closure $f, Closure $g) : callable {
|
|
return function (int $x) use ($f, $g) : int {
|
|
return $f($g($x));
|
|
};
|
|
}',
|
|
'error_message' => 'InvalidReturnStatement',
|
|
],
|
|
'returnsTypedClosureWithBadCall' => [
|
|
'<?php
|
|
class A {}
|
|
class B {}
|
|
class C {}
|
|
class D {}
|
|
|
|
/**
|
|
* @param Closure(B):A $f
|
|
* @param Closure(C):B $g
|
|
*
|
|
* @return Closure(C):A
|
|
*/
|
|
function foo(Closure $f, Closure $g) : Closure {
|
|
return function (int $x) use ($f, $g) : int {
|
|
return $f($g($x));
|
|
};
|
|
}',
|
|
'error_message' => 'InvalidArgument',
|
|
],
|
|
'returnsTypedClosureWithSubclassParam' => [
|
|
'<?php
|
|
class A {}
|
|
class B {}
|
|
class C {}
|
|
class C2 extends C {}
|
|
|
|
/**
|
|
* @param Closure(B):A $f
|
|
* @param Closure(C):B $g
|
|
*
|
|
* @return Closure(C):A
|
|
*/
|
|
function foo(Closure $f, Closure $g) : Closure {
|
|
return function (C2 $x) use ($f, $g) : A {
|
|
return $f($g($x));
|
|
};
|
|
}',
|
|
'error_message' => 'LessSpecificReturnStatement',
|
|
],
|
|
'returnsTypedClosureWithSubclassReturn' => [
|
|
'<?php
|
|
class A {}
|
|
class B {}
|
|
class C {}
|
|
class A2 extends A {}
|
|
|
|
/**
|
|
* @param Closure(B):A $f
|
|
* @param Closure(C):B $g
|
|
*
|
|
* @return Closure(C):A2
|
|
*/
|
|
function foo(Closure $f, Closure $g) : Closure {
|
|
return function (C $x) use ($f, $g) : A {
|
|
return $f($g($x));
|
|
};
|
|
}',
|
|
'error_message' => 'LessSpecificReturnStatement',
|
|
],
|
|
'returnsTypedClosureFromCallable' => [
|
|
'<?php
|
|
class A {}
|
|
class B {}
|
|
class C {}
|
|
|
|
/**
|
|
* @param Closure(B):A $f
|
|
* @param Closure(C):B $g
|
|
*
|
|
* @return callable(C):A
|
|
*/
|
|
function foo(Closure $f, Closure $g) : callable {
|
|
return function (C $x) use ($f, $g) : A {
|
|
return $f($g($x));
|
|
};
|
|
}
|
|
|
|
/**
|
|
* @param Closure(B):A $f
|
|
* @param Closure(C):B $g
|
|
*
|
|
* @return Closure(C):A
|
|
*/
|
|
function bar(Closure $f, Closure $g) : Closure {
|
|
return foo($f, $g);
|
|
}',
|
|
'error_message' => 'LessSpecificReturnStatement',
|
|
],
|
|
'undefinedVariable' => [
|
|
'<?php
|
|
$a = function() use ($i) {};',
|
|
'error_message' => 'UndefinedVariable',
|
|
],
|
|
'voidReturningArrayMap' => [
|
|
'<?php
|
|
$arr = array_map(
|
|
function(int $i) : void {
|
|
echo $i;
|
|
},
|
|
[1, 2, 3]
|
|
);
|
|
|
|
foreach ($arr as $a) {
|
|
if ($a) {}
|
|
}',
|
|
'error_message' => 'TypeDoesNotContainType',
|
|
],
|
|
'PHP71-closureFromCallableInvokableNamedClassWrongArgs' => [
|
|
'<?php
|
|
namespace NS;
|
|
use Closure;
|
|
|
|
/** @param Closure(string):bool $c */
|
|
function acceptsIntToBool(Closure $c): void {}
|
|
|
|
class NamedInvokable {
|
|
public function __invoke(int $p): bool {
|
|
return $p > 0;
|
|
}
|
|
}
|
|
|
|
acceptsIntToBool(Closure::fromCallable(new NamedInvokable));',
|
|
'error_message' => 'InvalidScalarArgument',
|
|
],
|
|
'undefinedClassForCallable' => [
|
|
'<?php
|
|
class Foo {
|
|
public function __construct(UndefinedClass $o) {}
|
|
}
|
|
new Foo(function() : void {});',
|
|
'error_message' => 'UndefinedClass',
|
|
],
|
|
'useDuplicateName' => [
|
|
'<?php
|
|
$foo = "bar";
|
|
|
|
$a = function (string $foo) use ($foo) : string {
|
|
return $foo;
|
|
};',
|
|
'error_message' => 'DuplicateParam',
|
|
],
|
|
'PHP71-privateCallable' => [
|
|
'<?php
|
|
class Base {
|
|
private function privateMethod() : void {}
|
|
}
|
|
|
|
class Example extends Base {
|
|
public function test() : Closure {
|
|
return Closure::fromCallable([$this, "privateMethod"]);
|
|
}
|
|
}',
|
|
'error_message' => 'InvalidArgument',
|
|
],
|
|
'prohibitCallableWithRequiredArg' => [
|
|
'<?php
|
|
/**
|
|
* @param Closure():int $x
|
|
*/
|
|
function accept_closure($x) : void {
|
|
$x();
|
|
}
|
|
accept_closure(
|
|
function (int $x) : int {
|
|
return $x;
|
|
}
|
|
);',
|
|
'error_message' => 'InvalidArgument',
|
|
],
|
|
'useClosureDocblockType' => [
|
|
'<?php
|
|
class A {}
|
|
class B extends A {}
|
|
|
|
function takesA(A $_a) : void {}
|
|
function takesB(B $_b) : void {}
|
|
|
|
$getAButReallyB = /** @return A */ function() {
|
|
return new B;
|
|
};
|
|
|
|
takesA($getAButReallyB());
|
|
takesB($getAButReallyB());',
|
|
'error_message' => 'ArgumentTypeCoercion - src' . DIRECTORY_SEPARATOR . 'somefile.php:13:28 - Argument 1 of takesB expects B, parent type A provided',
|
|
],
|
|
'closureByRefUseToMixed' => [
|
|
'<?php
|
|
function assertInt(int $int): int {
|
|
$s = static function() use(&$int): void {
|
|
$int = "42";
|
|
};
|
|
|
|
$s();
|
|
|
|
return $int;
|
|
}',
|
|
'error_message' => 'MixedReturnStatement'
|
|
],
|
|
'noCrashWhenComparingIllegitimateCallable' => [
|
|
'<?php
|
|
class C {}
|
|
|
|
function foo() : C {
|
|
return fn (int $i) => "";
|
|
}',
|
|
'error_message' => 'InvalidReturnStatement',
|
|
[],
|
|
false,
|
|
'7.4',
|
|
],
|
|
];
|
|
}
|
|
}
|