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Fix #4643 - use PHP8 union types when possible

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This commit is contained in:
Matt Brown 2020-11-21 22:50:56 -05:00 committed by Daniil Gentili
parent 169dbf2545
commit 56918001a8
Signed by: danog
GPG Key ID: 8C1BE3B34B230CA7
2 changed files with 57 additions and 23 deletions
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52
src/Psalm/Type/Union.php
View File

@ -437,10 +437,11 @@ class Union implements TypeNode
int $php_major_version,
int $php_minor_version
): ?string {
$nullable = false;
if (!$this->isSingleAndMaybeNullable()
|| $php_major_version < 7
if (!$this->isSingleAndMaybeNullable()) {
if ($php_major_version < 8) {
return null;
}
} elseif ($php_major_version < 7
|| (isset($this->types['null']) && $php_major_version === 7 && $php_minor_version < 1)
) {
return null;
@ -448,36 +449,38 @@ class Union implements TypeNode
$types = $this->types;
if (isset($types['null'])) {
if (count($types) === 1) {
return null;
}
$nullable = false;
if (isset($types['null']) && count($types) === 2) {
unset($types['null']);
$nullable = true;
}
$atomic_type = array_values($types)[0];
$php_types = [];
$atomic_type_string = $atomic_type->toPhpString(
$namespace,
$aliased_classes,
$this_class,
$php_major_version,
$php_minor_version
);
foreach ($types as $atomic_type) {
$php_type = $atomic_type->toPhpString(
$namespace,
$aliased_classes,
$this_class,
$php_major_version,
$php_minor_version
);
if ($atomic_type_string) {
return ($nullable ? '?' : '') . $atomic_type_string;
if (!$php_type) {
return null;
}
$php_types[] = $php_type;
}
return null;
return ($nullable ? '?' : '') . implode('|', array_unique($php_types));
}
public function canBeFullyExpressedInPhp(int $php_major_version, int $php_minor_version): bool
{
if (!$this->isSingleAndMaybeNullable()) {
if (!$this->isSingleAndMaybeNullable() && $php_major_version < 8) {
return false;
}
@ -491,9 +494,12 @@ class Union implements TypeNode
}
}
$atomic_type = array_values($types)[0];
return $atomic_type->canBeFullyExpressedInPhp($php_major_version, $php_minor_version);
return !array_filter(
$types,
function ($atomic_type) use ($php_major_version, $php_minor_version) {
return !$atomic_type->canBeFullyExpressedInPhp($php_major_version, $php_minor_version);
}
);
}
public function removeType(string $type_string): bool

28
tests/FileManipulation/MissingReturnTypeTest.php
View File

@ -984,6 +984,34 @@ class MissingReturnTypeTest extends FileManipulationTest
false,
true,
],
'returnIntOrString' => [
'<?php
function scope(int $i, string $s) {
return rand(0, 1) ? $i : $s;
}',
'<?php
function scope(int $i, string $s): int|string {
return rand(0, 1) ? $i : $s;
}',
'8.0',
['MissingReturnType'],
false,
true,
],
'returnIntOrString80' => [
'<?php
function scope(int $i, string $s) {
return rand(0, 1) ? $i : $s;
}',
'<?php
function scope(int $i, string $s): int|string {
return rand(0, 1) ? $i : $s;
}',
'8.0',
['MissingReturnType'],
false,
true,
],
];
}
}