Add option to extract messages from static method calls

[ybelenko]

I'm not sure, maybe this issue should be submitted to nikic/php-parser repo instead. I use own Translator helper class with static methods and I cannot extract messages from it method invocations.

Translator helper class:

use Gettext\Loader\PoLoader;
use Gettext\Translation;

final class Translator
{
    /** @var Gettext\Loader\LoaderInterface|null */
    protected static $loader;

    /** @var Gettext\Translations|null */
    protected static $translations;

    /**
     * Loads translations from PO file with php/gettext package.
     * @ref https://github.com/php-gettext/Gettext
     *
     * @param string $filePath Path to PO file
     */
    public static function loadPo(string $filePath)
    {
        if (!static::$loader) {
            static::$loader = new PoLoader();
        }
        static::$translations = static::$loader->loadFile($filePath);
    }

    /**
     * Translates message.
     *
     * @param string $msg Original message
     *
     * @return string Localized message or original if doesn't exist in PO file
     */
    public static function translate(string $msg): string
    {
        $t = static::$translations->find(null, $msg);
        if (
            $t instanceof Translation
            && $t->isTranslated()
        ) {
            return $t->getTranslation();
        }

        return $msg;
    }
}

scanner configuration:

//Create a new scanner, adding a translation for each domain we want to get:
$phpScanner = new PhpScanner(
    Translations::create('domain')
);

$phpScanner->setFunctions(
    array_merge(
        $phpScanner->getFunctions(),
        // none of following works
        ['Translator::translate' => 'gettext'],
        ['::translate' => 'gettext'],
        ['translate' => 'gettext']
    )
);

scanned file example:

Translator::loadPo('../locale/en/LC_MESSAGES/domain.po');
// i18n: 'Hello World' should be extracted
$msg = Translator::translate('Hello World');
echo $msg;

// po file saving omitted

[oscarotero]

Hi. Good point.
I'll work on that.
Thanks!

[oscarotero]

The new version (1.2.1) has support for static methods.