* fix#5010 function exec() is disabled
* Improve error message
Co-authored-by: Thomas Bley <thomas.bley@bringmeister.de>
Co-authored-by: Matthew Brown <github@muglug.com>
* #4997 added more precise stub for `count()` returning `0` or `positive-int` on known types
* #4997 updated `count()` to support `\SimpleXmlElement` and `\ResourceBundle` counting, as well as handling hardcoded 2-element-arrays cases
This patch:
* adds support for `count(\SimpleXmlElement)` (https://www.php.net/manual/en/simplexmlelement.count.php)
* adds support for `count(\ResourceBundle)` (https://www.php.net/manual/en/resourcebundle.count.php)
* removes usage of global constants from stub (not supported - see https://www.php.net/manual/en/function.count.php)
* adds support for identifying fixed-element-count arrays, for example `count(callable&array)`, which is always `2`
* #4997 adapted `FunctionCallReturnTypeFetcher` to infer `TPositiveInt` for `count(TNonEmptyArray)` and `count(TNonEmptyList)`
* The `FunctionCallReturnTypeFetcher` is responsible for defining the precise type of a `\count(T)`
expression when given a `T`, so we baked the whole type resolution for `positive-int`, `0` and
`positive-int|0` directly in there.
While this complicates things, it is also true that it is not possible right now (for the stubs)
to provide the level of detail around `count()` that is required by the type inference system
for such a complex function with so many different semantics.
This should allow analysis of forward-compatible polyfills used in
codebases targeting older PHP versions.
The following previously problematic polyfills should now emit no parse
errors:
* `symfony/polyfill-ctype`
* `symfony/polyfill-intl-grapheme`
* `symfony/polyfill-intl-normalizer`
* `symfony/polyfill-mbstring`
The pattern that is now works as intended looks like this:
```php
if (\PHP_VERSION_ID >= 80000) {
require __DIR__ . '/bootstrap80.php';
return;
}
```
Previously Psalm would scan the required file even when codebase
targeted older PHP versions, and would emit parse errors when that file
contained PHP 8 syntax.
Fixes#4961 and #4965
* add stubs for standard iterators
* Apply suggestions from code review cc @weirdan
Co-authored-by: Bruce Weirdan <weirdan@gmail.com>
* complete stub + delete code made redundant by stubs + fix some syntax in stubs
* fix parse error
Co-authored-by: Bruce Weirdan <weirdan@gmail.com>
