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Add result caching #46

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Merged
nunomaduro merged 1 commit into from
Apr 25, 2025
Merged

Add result caching #46

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54 changes: 52 additions & 2 deletions src/Analyser.php
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Original file line number Diff line number Diff line change
Expand Up @@ -21,12 +21,62 @@ public static function analyse(array $files, Closure $callback): void
{
$testCase = new TestCaseForTypeCoverage;

$cache = self::getCache();

$cacheIsModified = false;
foreach ($files as $file) {
$errors = $testCase->gatherAnalyserErrors([$file]);
$ignored = $testCase->getIgnoredErrors();
$fileHash = sha1_file($file);
if (array_key_exists($file, $cache) && $cache[$file]['hash'] === $fileHash) {
$errors = $cache[$file]['errors'];
$ignored = $cache[$file]['ignored'];
} else {
$errors = $testCase->gatherAnalyserErrors([$file]);
$ignored = $testCase->getIgnoredErrors();
$cache[$file] = [
'hash' => $fileHash,
'errors' => $errors,
'ignored' => $ignored,
];
$cacheIsModified = true;
}
$testCase->resetIgnoredErrors();

$callback(Result::fromPHPStanErrors($file, $errors, $ignored));
}
$cache = self::clearRemovedFilesFromCache($cache);
if ($cacheIsModified) {
self::saveCache($cache);
}
}

private static function getCache(): array
{
return is_file(self::getCacheFilepath())
? include self::getCacheFilepath()
: [];
}

private static function saveCache(array $cache): void
{
file_put_contents(
self::getCacheFilepath(),
"<?php\nreturn ".var_export($cache, true).';',
);
}

private static function getCacheFilepath(): string
{
return sys_get_temp_dir().'/pest_plugin_type_coverage_cache_'.md5(__DIR__).'.php';
}

private static function clearRemovedFilesFromCache(array $cache): array
{
foreach (array_keys($cache) as $file) {
if (! is_file($file)) {
unset($cache[$file]);
}
}

return $cache;
}
}