svm: keep a legacy FileSystemProviderSupport class for backwards compatibility [GR-65809]

Author: zapster

substratevm/src/com.oracle.svm.core/src/com/oracle/svm/core/jdk/FileSystemProviderSupport.java

@@ -0,0 +1,51 @@
+/*
+ * Copyright (c) 2016, 2025, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.  Oracle designates this
+ * particular file as subject to the "Classpath" exception as provided
+ * by Oracle in the LICENSE file that accompanied this code.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+package com.oracle.svm.core.jdk;
+
+import java.nio.file.spi.FileSystemProvider;
+
+import org.graalvm.nativeimage.Platform;
+import org.graalvm.nativeimage.Platforms;
+
+import com.oracle.svm.core.FutureDefaultsOptions;
+import com.oracle.svm.core.jdk.buildtimeinit.FileSystemProviderBuildTimeInitSupport;
+import com.oracle.svm.core.util.VMError;
+
+/**
+ * Legacy delegate for backwards compatibility. It should go away eventually (GR-65809).
+ * 
+ * @see com.oracle.svm.core.jdk.buildtimeinit.FileSystemProviderBuildTimeInitSupport
+ */
+@SuppressWarnings("unused")
+public final class FileSystemProviderSupport {
+
+    @Platforms(Platform.HOSTED_ONLY.class)
+    public static void register(FileSystemProvider provider) {
+        VMError.guarantee(!FutureDefaultsOptions.isJDKInitializedAtRunTime(), "No need to register FileSystemProvider if the JDK is initialized at run time.");
+        FileSystemProviderBuildTimeInitSupport.register(provider);
+    }
+
+}