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Memoize expensive calls to docComments. #458

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Feb 26, 2021
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Memoize expensive calls to docComments. #458

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12 changes: 9 additions & 3 deletions src/Reflection/ClassReflection.php
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Original file line number Diff line number Diff line change
Expand Up @@ -89,6 +89,9 @@ class ClassReflection implements ReflectionWithFilename
/** @var string|false|null */
private $filename;

/** @var string|false|null */
private $reflectionDocComment;

/**
* @param \PHPStan\Reflection\ReflectionProvider $reflectionProvider
* @param \PHPStan\Type\FileTypeMapper $fileTypeMapper
Expand Down Expand Up @@ -933,12 +936,15 @@ public function getResolvedPhpDoc(): ?ResolvedPhpDocBlock
return null;
}

$docComment = $this->reflection->getDocComment();
if ($docComment === false) {
if ($this->reflectionDocComment === null) {
$this->reflectionDocComment = $this->reflection->getDocComment();
}

if ($this->reflectionDocComment === false) {
return null;
}

return $this->fileTypeMapper->getResolvedPhpDoc($fileName, $this->getName(), null, null, $docComment);
return $this->fileTypeMapper->getResolvedPhpDoc($fileName, $this->getName(), null, null, $this->reflectionDocComment);
}

private function getFirstExtendsTag(): ?ExtendsTag
Expand Down
9 changes: 8 additions & 1 deletion src/Type/FileTypeMapper.php
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Expand Up @@ -53,6 +53,9 @@ class FileTypeMapper
/** @var array<string, bool> */
private array $alreadyProcessedDependentFiles = [];

/** @var array<string, string> */
private array $docKeys = [];

public function __construct(
ReflectionProviderProvider $reflectionProviderProvider,
Parser $phpParser,
Expand Down Expand Up @@ -518,7 +521,11 @@ private function getPhpDocKey(
string $docComment
): string
{
$docComment = \Nette\Utils\Strings::replace($docComment, '#\s+#', ' ');
$cacheKey = md5($docComment);
if (!isset($this->docKeys[$cacheKey])) {
$this->docKeys[$cacheKey] = \Nette\Utils\Strings::replace($docComment, '#\s+#', ' ');
}
$docComment = $this->docKeys[$cacheKey];

return md5(sprintf('%s-%s-%s-%s', $class, $trait, $function, $docComment));
}
Expand Down