Add re2c build for spc-gnu-docker

src/SPC/doctor/AsCheckItem.php

@@ -4,7 +4,7 @@ declare(strict_types=1);
 
 namespace SPC\doctor;
 
-#[\Attribute(\Attribute::TARGET_METHOD)]
+#[\Attribute(\Attribute::TARGET_METHOD | \Attribute::IS_REPEATABLE)]
 class AsCheckItem
 {
     public mixed $callback = null;

src/SPC/doctor/item/Re2cVersionCheck.php

@@ -0,0 +1,44 @@
+<?php
+
+declare(strict_types=1);
+
+namespace SPC\doctor\item;
+
+use SPC\builder\BuilderProvider;
+use SPC\builder\traits\UnixSystemUtilTrait;
+use SPC\doctor\AsCheckItem;
+use SPC\doctor\AsFixItem;
+use SPC\doctor\CheckResult;
+use SPC\store\Downloader;
+use Symfony\Component\Console\Input\ArgvInput;
+
+class Re2cVersionCheck
+{
+    use UnixSystemUtilTrait;
+
+    #[AsCheckItem('if re2c version >= 1.0.3', limit_os: 'Linux', level: 20)]
+    #[AsCheckItem('if re2c version >= 1.0.3', limit_os: 'Darwin', level: 20)]
+    public function checkRe2cVersion(): ?CheckResult
+    {
+        $ver = shell()->execWithResult('re2c --version', false);
+        // match version: re2c X.X(.X)
+        if ($ver[0] !== 0 || !preg_match('/re2c\s+(\d+\.\d+(\.\d+)?)/', $ver[1][0], $matches)) {
+            return CheckResult::fail('Failed to get re2c version', 'build-re2c');
+        }
+        $version_string = $matches[1];
+        if (version_compare($version_string, '1.0.3') < 0) {
+            return CheckResult::fail('re2c version is too low (' . $version_string . ')', 'build-re2c');
+        }
+        return CheckResult::ok($version_string);
+    }
+
+    #[AsFixItem('build-re2c')]
+    public function buildRe2c(): bool
+    {
+        Downloader::downloadSource('re2c');
+        $builder = BuilderProvider::makeBuilderByInput(new ArgvInput([]));
+        $builder->proveLibs(['re2c']);
+        $builder->setupLibs();
+        return true;
+    }
+}