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SpecifiedTypes.php
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SpecifiedTypes.php
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<?php declare(strict_types = 1);
namespace PHPStan\Analyser;
use PhpParser\Node\Expr;
use PHPStan\Type\Type;
use PHPStan\Type\TypeCombinator;
class SpecifiedTypes
{
/**
* @api
* @param array<string, array{Expr, Type}> $sureTypes
* @param array<string, array{Expr, Type}> $sureNotTypes
* @param array<string, ConditionalExpressionHolder[]> $newConditionalExpressionHolders
*/
public function __construct(
private array $sureTypes = [],
private array $sureNotTypes = [],
private bool $overwrite = false,
private array $newConditionalExpressionHolders = [],
)
{
}
/**
* @api
* @return array<string, array{Expr, Type}>
*/
public function getSureTypes(): array
{
return $this->sureTypes;
}
/**
* @api
* @return array<string, array{Expr, Type}>
*/
public function getSureNotTypes(): array
{
return $this->sureNotTypes;
}
public function shouldOverwrite(): bool
{
return $this->overwrite;
}
/**
* @return array<string, ConditionalExpressionHolder[]>
*/
public function getNewConditionalExpressionHolders(): array
{
return $this->newConditionalExpressionHolders;
}
/** @api */
public function intersectWith(SpecifiedTypes $other): self
{
$normalized = $this->normalize();
$otherNormalized = $other->normalize();
$sureTypeUnion = [];
$sureNotTypeUnion = [];
foreach ($normalized->sureTypes as $exprString => [$exprNode, $type]) {
if (!isset($otherNormalized->sureTypes[$exprString])) {
continue;
}
$sureTypeUnion[$exprString] = [
$exprNode,
TypeCombinator::union($type, $otherNormalized->sureTypes[$exprString][1]),
];
}
foreach ($normalized->sureNotTypes as $exprString => [$exprNode, $type]) {
if (!isset($otherNormalized->sureNotTypes[$exprString])) {
continue;
}
$sureNotTypeUnion[$exprString] = [
$exprNode,
TypeCombinator::intersect($type, $otherNormalized->sureNotTypes[$exprString][1]),
];
}
return new self($sureTypeUnion, $sureNotTypeUnion);
}
/** @api */
public function unionWith(SpecifiedTypes $other): self
{
$sureTypeUnion = $this->sureTypes + $other->sureTypes;
$sureNotTypeUnion = $this->sureNotTypes + $other->sureNotTypes;
foreach ($this->sureTypes as $exprString => [$exprNode, $type]) {
if (!isset($other->sureTypes[$exprString])) {
continue;
}
$sureTypeUnion[$exprString] = [
$exprNode,
TypeCombinator::intersect($type, $other->sureTypes[$exprString][1]),
];
}
foreach ($this->sureNotTypes as $exprString => [$exprNode, $type]) {
if (!isset($other->sureNotTypes[$exprString])) {
continue;
}
$sureNotTypeUnion[$exprString] = [
$exprNode,
TypeCombinator::union($type, $other->sureNotTypes[$exprString][1]),
];
}
return new self($sureTypeUnion, $sureNotTypeUnion);
}
private function normalize(): self
{
$sureTypes = $this->sureTypes;
$sureNotTypes = [];
foreach ($this->sureNotTypes as $exprString => [$exprNode, $sureNotType]) {
if (!isset($sureTypes[$exprString])) {
$sureNotTypes[$exprString] = [$exprNode, $sureNotType];
continue;
}
$sureTypes[$exprString][1] = TypeCombinator::remove($sureTypes[$exprString][1], $sureNotType);
}
return new self($sureTypes, $sureNotTypes, $this->overwrite, $this->newConditionalExpressionHolders);
}
}