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This commit is contained in:
nuno maduro
2026-04-21 08:15:24 -07:00
parent ed399af43e
commit 2941f9821f
9 changed files with 114 additions and 23 deletions
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30
src/Plugins/Tia/Fingerprint.php
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@ -16,7 +16,7 @@ final readonly class Fingerprint
{
// Bump this whenever the set of inputs or the hash algorithm changes, so
// older graphs are invalidated automatically.
private const int SCHEMA_VERSION = 2;
private const int SCHEMA_VERSION = 3;
/**
* @return array<string, int|string|null>
@ -26,6 +26,13 @@ final readonly class Fingerprint
return [
'schema' => self::SCHEMA_VERSION,
'php' => PHP_VERSION,
// Loaded extensions + their versions. Guards against the
// "recorded without pcov/xdebug → subsequent run has the
// driver but graph has no edges" trap where the fingerprint
// matches but the graph is effectively empty. Sorted so two
// processes with the same extensions in different load order
// still produce the same hash.
'extensions' => self::extensionsFingerprint(),
'pest' => self::readPestVersion($projectRoot),
'composer_lock' => self::hashIfExists($projectRoot.'/composer.lock'),
'phpunit_xml' => self::hashIfExists($projectRoot.'/phpunit.xml'),
@ -41,6 +48,27 @@ final readonly class Fingerprint
];
}
/**
* Deterministic hash of the PHP extension set: `ext-name@version` pairs
* sorted alphabetically and joined. Captures both presence (pcov
* disappeared? graph must rebuild) and version changes (xdebug minor
* bump with coverage-mode semantics).
*/
private static function extensionsFingerprint(): string
{
$extensions = get_loaded_extensions();
sort($extensions);
$parts = [];
foreach ($extensions as $name) {
$version = phpversion($name);
$parts[] = $name.'@'.($version === false ? '?' : $version);
}
return hash('xxh128', implode("\n", $parts));
}
/**
* @param array<string, mixed> $a
* @param array<string, mixed> $b