mirror of
https://github.com/danog/psalm.git
synced 2024-11-27 12:55:26 +01:00
1108 lines
35 KiB
PHP
1108 lines
35 KiB
PHP
<?php
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namespace Psalm\Tests\Template;
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use Psalm\Tests\TestCase;
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use Psalm\Tests\Traits;
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class FunctionTemplateTest 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()
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{
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return [
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'validTemplatedType' => [
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'<?php
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namespace FooFoo;
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/**
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* @template T
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* @param T $x
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* @return T
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*/
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function foo($x) {
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return $x;
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}
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function bar(string $a): void { }
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bar(foo("string"));',
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],
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'validPsalmTemplatedFunctionType' => [
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'<?php
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namespace FooFoo;
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/**
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* @psalm-template T
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* @psalm-param T $x
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* @psalm-return T
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*/
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function foo($x) {
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return $x;
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}
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function bar(string $a): void { }
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bar(foo("string"));',
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],
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'validTemplatedStaticMethodType' => [
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'<?php
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namespace FooFoo;
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class A {
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/**
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* @template T
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* @param T $x
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* @return T
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*/
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public static function foo($x) {
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return $x;
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}
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}
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function bar(string $a): void { }
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bar(A::foo("string"));',
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],
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'validTemplatedInstanceMethodType' => [
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'<?php
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namespace FooFoo;
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class A {
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/**
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* @template T
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* @param T $x
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* @return T
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*/
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public function foo($x) {
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return $x;
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}
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}
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function bar(string $a): void { }
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bar((new A())->foo("string"));',
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],
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'genericArrayKeys' => [
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'<?php
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/**
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* @template T as array-key
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*
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* @param array<T, mixed> $arr
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* @return array<int, T>
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*/
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function my_array_keys($arr) {
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return array_keys($arr);
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}
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$a = my_array_keys(["hello" => 5, "goodbye" => new \Exception()]);',
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'assertions' => [
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'$a' => 'array<int, string>',
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],
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],
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'genericArrayFlip' => [
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'<?php
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/**
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* @template TKey as array-key
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* @template TValue as array-key
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*
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* @param array<TKey, TValue> $arr
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* @return array<TValue, TKey>
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*/
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function my_array_flip($arr) {
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return array_flip($arr);
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}
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$b = my_array_flip(["hello" => 5, "goodbye" => 6]);',
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'assertions' => [
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'$b' => 'array<int, string>',
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],
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],
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'byRefKeyValueArray' => [
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'<?php
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/**
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* @template TValue
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* @template TKey as array-key
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*
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* @param array<TKey, TValue> $arr
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*/
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function byRef(array &$arr) : void {}
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$b = ["a" => 5, "c" => 6];
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byRef($b);',
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'assertions' => [
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'$b' => 'array<string, int>',
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],
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],
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'byRefMixedKeyArray' => [
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'<?php
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/**
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* @template TValue
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*
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* @param array<mixed, TValue> $arr
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*/
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function byRef(array &$arr) : void {}
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$b = ["a" => 5, "c" => 6];
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byRef($b);',
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'assertions' => [
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'$b' => 'array<mixed, int>',
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],
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],
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'mixedArrayPop' => [
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'<?php
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/**
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* @template TValue
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*
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* @param array<array-key, TValue> $arr
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* @return TValue|null
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*/
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function my_array_pop(array &$arr) {
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return array_pop($arr);
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}
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/** @var mixed */
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$b = ["a" => 5, "c" => 6];
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$a = my_array_pop($b);',
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'assertions' => [
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'$a' => 'mixed',
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'$b' => 'array<array-key, mixed>',
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],
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'error_levels' => ['MixedAssignment', 'MixedArgument'],
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],
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'genericArrayPop' => [
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'<?php
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/**
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* @template TValue
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* @template TKey as array-key
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*
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* @param array<TKey, TValue> $arr
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* @return TValue|null
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*/
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function my_array_pop(array &$arr) {
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return array_pop($arr);
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}
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$b = ["a" => 5, "c" => 6];
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$a = my_array_pop($b);',
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'assertions' => [
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'$a' => 'null|int',
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'$b' => 'array<string, int>',
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],
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],
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'templateCallableReturnType' => [
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'<?php
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namespace NS;
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/**
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* @template T
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* @psalm-param callable():T $action
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* @psalm-return T
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*/
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function retry(int $maxRetries, callable $action) {
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return $action();
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}
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function takesInt(int $p): void{};
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takesInt(retry(1, function(): int { return 1; }));',
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],
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'templateClosureReturnType' => [
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'<?php
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namespace NS;
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/**
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* @template T
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* @psalm-param \Closure():T $action
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* @psalm-return T
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*/
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function retry(int $maxRetries, callable $action) {
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return $action();
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}
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function takesInt(int $p): void{};
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takesInt(retry(1, function(): int { return 1; }));',
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],
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'replaceChildTypeWithGenerator' => [
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'<?php
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/**
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* @template TKey as array-key
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* @template TValue
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* @param Traversable<TKey, TValue> $t
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* @return array<TKey, TValue>
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*/
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function f(Traversable $t): array {
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$ret = [];
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foreach ($t as $k => $v) $ret[$k] = $v;
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return $ret;
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}
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/** @return Generator<int, stdClass> */
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function g():Generator { yield new stdClass; }
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takesArrayOfStdClass(f(g()));
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/** @param array<stdClass> $p */
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function takesArrayOfStdClass(array $p): void {}',
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],
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'splatTemplateParam' => [
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'<?php
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/**
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* @template TKey as array-key
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* @template TValue
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*
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* @param array<TKey, TValue> $arr
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* @param array $arr2
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* @return array<TKey, TValue>
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*/
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function splat_proof(array $arr, array $arr2) {
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return $arr;
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}
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$foo = [
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[1, 2, 3],
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[1, 2],
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];
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$a = splat_proof(...$foo);',
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'assertions' => [
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'$a' => 'array<int, int>',
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],
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],
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'passArrayByRef' => [
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'<?php
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function acceptsStdClass(stdClass $_p): void {}
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$q = [new stdClass];
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acceptsStdClass(fNoRef($q));
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acceptsStdClass(fRef($q));
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acceptsStdClass(fNoRef($q));
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/**
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* @template TKey as array-key
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* @template TValue
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*
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* @param array<TKey, TValue> $_arr
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* @return null|TValue
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* @psalm-ignore-nullable-return
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*/
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function fRef(array &$_arr) {
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return array_shift($_arr);
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}
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/**
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* @template TKey as array-key
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* @template TValue
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*
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* @param array<TKey, TValue> $_arr
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* @return null|TValue
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* @psalm-ignore-nullable-return
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*/
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function fNoRef(array $_arr) {
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return array_shift($_arr);
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}',
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],
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'classTemplateAsCorrect' => [
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'<?php
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class Foo {}
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class FooChild extends Foo {}
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/**
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* @template T as Foo
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* @param T $x
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* @return T
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*/
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function bar($x) {
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return $x;
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}
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bar(new Foo());
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bar(new FooChild());',
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],
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'classTemplateOfCorrect' => [
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'<?php
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class Foo {}
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class FooChild extends Foo {}
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/**
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* @template T of Foo
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* @param T $x
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* @return T
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*/
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function bar($x) {
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return $x;
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}
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bar(new Foo());
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bar(new FooChild());',
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],
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'classTemplateAsInterface' => [
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'<?php
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interface Foo {}
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interface FooChild extends Foo {}
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class FooImplementer implements Foo {}
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/**
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* @template T as Foo
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* @param T $x
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* @return T
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*/
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function bar($x) {
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return $x;
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}
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function takesFoo(Foo $f) : void {
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bar($f);
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}
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function takesFooChild(FooChild $f) : void {
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bar($f);
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}
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function takesFooImplementer(FooImplementer $f) : void {
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bar($f);
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}',
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],
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'templateFunctionVar' => [
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'<?php
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namespace A\B;
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class C {
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public function bar() : void {}
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}
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interface D {}
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/**
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* @template T as C
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* @return T
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*/
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function foo($some_t) : C {
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/** @var T */
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$a = $some_t;
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$a->bar();
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/** @var T&D */
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$b = $some_t;
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$b->bar();
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/** @var D&T */
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$b = $some_t;
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$b->bar();
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return $a;
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}',
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'assertions' => [],
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'error_levels' => ['MixedAssignment', 'MissingParamType'],
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],
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'bindFirstTemplatedClosureParameter' => [
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'<?php
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/**
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* @template T
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*
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* @param Closure(T):void $t1
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* @param T $t2
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*/
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function apply(Closure $t1, $t2) : void
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{
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$t1($t2);
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}
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apply(function(int $_i) : void {}, 5);
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apply(function(string $_i) : void {}, "hello");
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apply(function(stdClass $_i) : void {}, new stdClass);
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class A {}
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class AChild extends A {}
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apply(function(A $_i) : void {}, new AChild());',
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],
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'callableReturnsItself' => [
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'<?php
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$a =
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/**
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* @param callable():string $s
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* @return string
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*/
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function(callable $s) {
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return $s();
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};
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|
|
/**
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* @template T1
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* @param callable(callable():T1):T1 $s
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* @return void
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*/
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function takesReturnTCallable(callable $s) {}
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takesReturnTCallable($a);',
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],
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'nonBindingParamReturn' => [
|
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'<?php
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/**
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* @template T
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*
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* @param Closure():T $t1
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* @param T $t2
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*/
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function foo(Closure $t1, $t2) : void {}
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foo(
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function () : int {
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return 5;
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},
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"hello"
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);',
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],
|
|
'templatedInterfaceMethodInheritReturnType' => [
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'<?php
|
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class Foo {}
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class SomeIterator implements IteratorAggregate
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{
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public function getIterator() {
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yield new Foo;
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}
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}
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$i = (new SomeIterator())->getIterator();',
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[
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'$i' => 'Traversable<mixed, mixed>',
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],
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],
|
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'upcastArrayToIterable' => [
|
|
'<?php
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/**
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* @template K
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* @template V
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* @param iterable<K,V> $collection
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* @return V
|
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* @psalm-suppress InvalidReturnType
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|
*/
|
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function first($collection) {}
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$one = first([1,2,3]);',
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[
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'$one' => 'int',
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],
|
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],
|
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'templateIntersectionLeft' => [
|
|
'<?php
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interface I1 {}
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interface I2 {}
|
|
|
|
/**
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* @template T as I1&I2
|
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* @param T $a
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*/
|
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function templatedBar(I1 $a) : void {}',
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],
|
|
'templateIntersectionRight' => [
|
|
'<?php
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interface I1 {}
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interface I2 {}
|
|
|
|
/**
|
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* @template T as I1&I2
|
|
* @param T $b
|
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*/
|
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function templatedBar(I2 $b) : void {}',
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|
],
|
|
'matchMostSpecificTemplate' => [
|
|
'<?php
|
|
/**
|
|
* @template TReturn
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|
* @param callable():(\Generator<mixed, mixed, mixed, TReturn>|TReturn) $gen
|
|
* @return array<int, TReturn>
|
|
*/
|
|
function call(callable $gen) : array {
|
|
$return = $gen();
|
|
if ($return instanceof Generator) {
|
|
return [$gen->getReturn()];
|
|
}
|
|
/** @var array<int, TReturn> */
|
|
$wrapped_gen = [$gen];
|
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return $wrapped_gen;
|
|
}
|
|
|
|
$arr = call(
|
|
/**
|
|
* @return Generator<mixed, mixed, mixed, string>
|
|
*/
|
|
function() {
|
|
yield 1;
|
|
return "hello";
|
|
}
|
|
);',
|
|
[
|
|
'$arr' => 'array<int, string>',
|
|
],
|
|
],
|
|
'templateOfWithSpace' => [
|
|
'<?php
|
|
/**
|
|
* @template T of array<int, mixed>
|
|
*/
|
|
class Foo
|
|
{
|
|
}
|
|
|
|
/**
|
|
* @param Foo<array<int, DateTime>> $a
|
|
*/
|
|
function bar(Foo $a) : void {}',
|
|
],
|
|
'allowUnionTypeParam' => [
|
|
'<?php
|
|
/**
|
|
* @template T
|
|
* @param callable(T) $x
|
|
* @param array<T> $y
|
|
*/
|
|
function example($x, $y): void {}
|
|
|
|
example(
|
|
/**
|
|
* @param int|false $x
|
|
*/
|
|
function($x): void {},
|
|
[strpos("str", "str")]
|
|
);',
|
|
],
|
|
'ignoreTooManyArrayArgs' => [
|
|
'<?php
|
|
|
|
function takesArray(array $arr) : void {}
|
|
|
|
/**
|
|
* @psalm-suppress TooManyTemplateParams
|
|
* @var array<int, int, int>
|
|
*/
|
|
$b = [1, 2, 3];
|
|
takesArray($b);',
|
|
],
|
|
'functionTemplateUnionType' => [
|
|
'<?php
|
|
/**
|
|
* @template T0 as int|string
|
|
* @param T0 $t
|
|
* @return T0
|
|
*/
|
|
function foo($t) {
|
|
return $t;
|
|
}
|
|
|
|
$s = foo("hello");
|
|
$i = foo(5);',
|
|
'assertions' => [
|
|
'$s' => 'string',
|
|
'$i' => 'int',
|
|
],
|
|
],
|
|
'reconcileTraversableTemplatedAndNormal' => [
|
|
'<?php
|
|
function foo(Traversable $t): void {
|
|
if ($t instanceof IteratorAggregate) {
|
|
$a = $t->getIterator();
|
|
$t = $a;
|
|
}
|
|
|
|
if (!$t instanceof Iterator) {
|
|
return;
|
|
}
|
|
|
|
if (rand(0, 1) && rand(0, 1)) {
|
|
$t->next();
|
|
}
|
|
}',
|
|
],
|
|
'keyOfTemplate' => [
|
|
'<?php
|
|
/**
|
|
* @template T as array
|
|
* @template K as key-of<T>
|
|
*
|
|
* @param T $o
|
|
* @param K $name
|
|
*
|
|
* @return T[K]
|
|
*/
|
|
function getOffset(array $o, $name) {
|
|
return $o[$name];
|
|
}
|
|
|
|
$a = ["foo" => "hello", "bar" => 2];
|
|
|
|
$b = getOffset($a, "foo");
|
|
$c = getOffset($a, "bar");',
|
|
[
|
|
'$b' => 'string',
|
|
'$c' => 'int',
|
|
],
|
|
],
|
|
'dontGeneraliseBoundParamWithWiderCallable' => [
|
|
'<?php
|
|
class C {
|
|
public function foo() : void {}
|
|
}
|
|
|
|
/**
|
|
* @psalm-template T
|
|
* @psalm-param T $t
|
|
* @psalm-param callable(?T):void $callable
|
|
* @return T
|
|
*/
|
|
function makeConcrete($t, callable $callable) {
|
|
$callable(rand(0, 1) ? $t : null);
|
|
return $t;
|
|
}
|
|
|
|
$c = makeConcrete(new C(), function (?C $c) : void {});',
|
|
[
|
|
'$c' => 'C',
|
|
],
|
|
],
|
|
'allowTemplateTypeBeingUsedInsideFunction' => [
|
|
'<?php
|
|
/**
|
|
* @template T of DateTime
|
|
* @param callable(T) $callable
|
|
* @param T $value
|
|
*/
|
|
function foo(callable $callable, DateTime $value) : void {
|
|
$callable($value);
|
|
}',
|
|
],
|
|
'callFindAnother' => [
|
|
'<?php
|
|
/**
|
|
* @template T as Foo
|
|
* @param T $foo
|
|
* @return T
|
|
*/
|
|
function loader($foo) {
|
|
return $foo::getAnother();
|
|
}
|
|
|
|
class Foo {
|
|
/** @return static */
|
|
public static function getAnother() {
|
|
return new static();
|
|
}
|
|
}',
|
|
],
|
|
'templatedVarOnReturn' => [
|
|
'<?php
|
|
namespace Ns;
|
|
|
|
class A {}
|
|
class B {}
|
|
|
|
/**
|
|
* @template T
|
|
* @param T $t
|
|
* @return T
|
|
*/
|
|
function getAOrB($t) {
|
|
if ($t instanceof A) {
|
|
/** @var T */
|
|
return new A();
|
|
}
|
|
|
|
/** @var T */
|
|
return new B();
|
|
}',
|
|
],
|
|
];
|
|
}
|
|
|
|
/**
|
|
* @return iterable<string,array{string,error_message:string,2?:string[],3?:bool,4?:string}>
|
|
*/
|
|
public function providerInvalidCodeParse()
|
|
{
|
|
return [
|
|
'invalidTemplatedType' => [
|
|
'<?php
|
|
namespace FooFoo;
|
|
|
|
/**
|
|
* @template T
|
|
* @param T $x
|
|
* @return T
|
|
*/
|
|
function foo($x) {
|
|
return $x;
|
|
}
|
|
|
|
function bar(string $a): void { }
|
|
|
|
bar(foo(4));',
|
|
'error_message' => 'InvalidScalarArgument',
|
|
],
|
|
'invalidTemplatedStaticMethodType' => [
|
|
'<?php
|
|
namespace FooFoo;
|
|
|
|
class A {
|
|
/**
|
|
* @template T
|
|
* @param T $x
|
|
* @return T
|
|
*/
|
|
public static function foo($x) {
|
|
return $x;
|
|
}
|
|
}
|
|
|
|
function bar(string $a): void { }
|
|
|
|
bar(A::foo(4));',
|
|
'error_message' => 'InvalidScalarArgument',
|
|
],
|
|
'invalidTemplatedInstanceMethodType' => [
|
|
'<?php
|
|
namespace FooFoo;
|
|
|
|
class A {
|
|
/**
|
|
* @template T
|
|
* @param T $x
|
|
* @return T
|
|
*/
|
|
public function foo($x) {
|
|
return $x;
|
|
}
|
|
}
|
|
|
|
function bar(string $a): void { }
|
|
|
|
bar((new A())->foo(4));',
|
|
'error_message' => 'InvalidScalarArgument',
|
|
],
|
|
'replaceChildTypeNoHint' => [
|
|
'<?php
|
|
/**
|
|
* @template TKey as array-key
|
|
* @template TValue
|
|
* @param Traversable<TKey, TValue> $t
|
|
* @return array<TKey, TValue>
|
|
*/
|
|
function f(Traversable $t): array {
|
|
$ret = [];
|
|
foreach ($t as $k => $v) $ret[$k] = $v;
|
|
return $ret;
|
|
}
|
|
|
|
function g():Generator { yield new stdClass; }
|
|
|
|
takesArrayOfStdClass(f(g()));
|
|
|
|
/** @param array<stdClass> $p */
|
|
function takesArrayOfStdClass(array $p): void {}',
|
|
'error_message' => 'MixedArgumentTypeCoercion',
|
|
],
|
|
'classTemplateAsIncorrectClass' => [
|
|
'<?php
|
|
class Foo {}
|
|
class NotFoo {}
|
|
|
|
/**
|
|
* @template T as Foo
|
|
* @param T $x
|
|
* @return T
|
|
*/
|
|
function bar($x) {
|
|
return $x;
|
|
}
|
|
|
|
bar(new NotFoo());',
|
|
'error_message' => 'InvalidArgument',
|
|
],
|
|
'classTemplateAsIncorrectInterface' => [
|
|
'<?php
|
|
interface Foo {}
|
|
interface NotFoo {}
|
|
|
|
/**
|
|
* @template T as Foo
|
|
* @param T $x
|
|
* @return T
|
|
*/
|
|
function bar($x) {
|
|
return $x;
|
|
}
|
|
|
|
function takesNotFoo(NotFoo $f) : void {
|
|
bar($f);
|
|
}',
|
|
'error_message' => 'InvalidArgument',
|
|
],
|
|
'templateFunctionMethodCallWithoutMethod' => [
|
|
'<?php
|
|
namespace A\B;
|
|
|
|
class C {}
|
|
|
|
/**
|
|
* @template T as C
|
|
* @param T $some_t
|
|
*/
|
|
function foo($some_t) : void {
|
|
$some_t->bar();
|
|
}',
|
|
'error_message' => 'PossiblyUndefinedMethod',
|
|
],
|
|
'templateFunctionMethodCallWithoutAsType' => [
|
|
'<?php
|
|
namespace A\B;
|
|
|
|
/**
|
|
* @template T
|
|
* @param T $some_t
|
|
*/
|
|
function foo($some_t) : void {
|
|
$some_t->bar();
|
|
}',
|
|
'error_message' => 'MixedMethodCall',
|
|
],
|
|
'bindFirstTemplatedClosureParameter' => [
|
|
'<?php
|
|
/**
|
|
* @template T
|
|
*
|
|
* @param Closure(T):void $t1
|
|
* @param T $t2
|
|
*/
|
|
function apply(Closure $t1, $t2) : void
|
|
{
|
|
$t1($t2);
|
|
}
|
|
|
|
apply(function(int $_i) : void {}, "hello");',
|
|
'error_message' => 'InvalidScalarArgument',
|
|
],
|
|
'bindFirstTemplatedClosureParameterTypeCoercion' => [
|
|
'<?php
|
|
/**
|
|
* @template T
|
|
*
|
|
* @param Closure(T):void $t1
|
|
* @param T $t2
|
|
*/
|
|
function apply(Closure $t1, $t2) : void
|
|
{
|
|
$t1($t2);
|
|
}
|
|
|
|
class A {}
|
|
class AChild extends A {}
|
|
|
|
apply(function(AChild $_i) : void {}, new A());',
|
|
'error_message' => 'ArgumentTypeCoercion',
|
|
],
|
|
|
|
'callableDoesNotReturnItself' => [
|
|
'<?php
|
|
$b =
|
|
/**
|
|
* @param callable():int $s
|
|
* @return string
|
|
*/
|
|
function(callable $s) {
|
|
return "#" . $s();
|
|
};
|
|
|
|
/**
|
|
* @template T1
|
|
* @param callable(callable():T1):T1 $s
|
|
* @return void
|
|
*/
|
|
function takesReturnTCallable(callable $s) {}
|
|
|
|
takesReturnTCallable($b);',
|
|
'error_message' => 'InvalidScalarArgument',
|
|
],
|
|
'multipleArgConstraintWithMoreRestrictiveFirstArg' => [
|
|
'<?php
|
|
class A {}
|
|
class AChild extends A {}
|
|
|
|
/**
|
|
* @template T
|
|
* @param callable(T):void $c1
|
|
* @param callable(T):void $c2
|
|
* @param T $a
|
|
*/
|
|
function foo(callable $c1, callable $c2, $a): void {
|
|
$c1($a);
|
|
$c2($a);
|
|
}
|
|
|
|
foo(
|
|
function(AChild $_a) : void {},
|
|
function(A $_a) : void {},
|
|
new A()
|
|
);',
|
|
'error_message' => 'ArgumentTypeCoercion',
|
|
],
|
|
'multipleArgConstraintWithMoreRestrictiveSecondArg' => [
|
|
'<?php
|
|
class A {}
|
|
class AChild extends A {}
|
|
|
|
/**
|
|
* @template T
|
|
* @param callable(T):void $c1
|
|
* @param callable(T):void $c2
|
|
* @param T $a
|
|
*/
|
|
function foo(callable $c1, callable $c2, $a): void {
|
|
$c1($a);
|
|
$c2($a);
|
|
}
|
|
|
|
foo(
|
|
function(A $_a) : void {},
|
|
function(AChild $_a) : void {},
|
|
new A()
|
|
);',
|
|
'error_message' => 'ArgumentTypeCoercion',
|
|
],
|
|
'multipleArgConstraintWithLessRestrictiveThirdArg' => [
|
|
'<?php
|
|
class A {}
|
|
class AChild extends A {}
|
|
|
|
/**
|
|
* @template T
|
|
* @param callable(T):void $c1
|
|
* @param callable(T):void $c2
|
|
* @param T $a
|
|
*/
|
|
function foo(callable $c1, callable $c2, $a): void {
|
|
$c1($a);
|
|
$c2($a);
|
|
}
|
|
|
|
foo(
|
|
function(AChild $_a) : void {},
|
|
function(AChild $_a) : void {},
|
|
new A()
|
|
);',
|
|
'error_message' => 'ArgumentTypeCoercion',
|
|
],
|
|
'possiblyInvalidArgumentWithUnionFirstArg' => [
|
|
'<?php
|
|
|
|
/**
|
|
* @template T
|
|
* @param T $a
|
|
* @param T $b
|
|
* @return T
|
|
*/
|
|
function foo($a, $b) {
|
|
return rand(0, 1) ? $a : $b;
|
|
}
|
|
|
|
echo foo([], "hello");',
|
|
'error_message' => 'PossiblyInvalidArgument',
|
|
],
|
|
'possiblyInvalidArgumentWithUnionSecondArg' => [
|
|
'<?php
|
|
|
|
/**
|
|
* @template T
|
|
* @param T $a
|
|
* @param T $b
|
|
* @return T
|
|
*/
|
|
function foo($a, $b) {
|
|
return rand(0, 1) ? $a : $b;
|
|
}
|
|
|
|
echo foo("hello", []);',
|
|
'error_message' => 'PossiblyInvalidArgument',
|
|
],
|
|
'preventTemplateTypeAsBeingUsedInsideFunction' => [
|
|
'<?php
|
|
/**
|
|
* @template T of DateTime
|
|
* @param callable(T) $callable
|
|
*/
|
|
function foo(callable $callable) : void {
|
|
$callable(new \DateTime());
|
|
}',
|
|
'error_message' => 'InvalidArgument',
|
|
],
|
|
'preventWrongTemplateBeingPassed' => [
|
|
'<?php
|
|
/**
|
|
* @template T of DateTime
|
|
* @template T2 of DateTime
|
|
* @param callable(T): T $parameter
|
|
* @param T2 $value
|
|
* @return T
|
|
*/
|
|
function foo(callable $parameter, $value)
|
|
{
|
|
return $parameter($value);
|
|
}',
|
|
'error_message' => 'InvalidArgument',
|
|
],
|
|
'preventTemplateTypeReturnMoreGeneral' => [
|
|
'<?php
|
|
/**
|
|
* @template T of DateTimeInterface
|
|
* @param T $x
|
|
* @return T
|
|
*/
|
|
function foo($x)
|
|
{
|
|
return new \DateTime();
|
|
}',
|
|
'error_message' => 'InvalidReturnStatement',
|
|
],
|
|
'preventReturningString' => [
|
|
'<?php
|
|
/**
|
|
* @template T
|
|
* @psalm-param T $t
|
|
* @return T
|
|
*/
|
|
function mirror($t) {
|
|
return "string";
|
|
}',
|
|
'error_message' => 'InvalidReturnStatement',
|
|
],
|
|
'unTemplatedVarOnReturn' => [
|
|
'<?php
|
|
namespace Ns;
|
|
|
|
class A {}
|
|
class B {}
|
|
|
|
/**
|
|
* @template T
|
|
* @param T $t
|
|
* @return T
|
|
*/
|
|
function getAOrB($t) {
|
|
if ($t instanceof A) {
|
|
return new A();
|
|
}
|
|
|
|
return new B();
|
|
}',
|
|
'error_message' => 'InvalidReturnStatement',
|
|
],
|
|
];
|
|
}
|
|
}
|