langtools/src/jdk.compiler/share/classes/com/sun/tools/javac/util/JDK9Wrappers.java
--- a/langtools/src/jdk.compiler/share/classes/com/sun/tools/javac/util/JDK9Wrappers.java Tue Oct 04 18:43:36 2016 -0700
+++ b/langtools/src/jdk.compiler/share/classes/com/sun/tools/javac/util/JDK9Wrappers.java Tue Oct 04 18:56:03 2016 -0700
@@ -25,6 +25,7 @@
package com.sun.tools.javac.util;
+import java.io.IOException;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.nio.file.Path;
@@ -367,4 +368,41 @@
}
}
}
+
+ /**
+ * Helper class for new method in jdk.internal.jmod.JmodFile
+ */
+ public static final class JmodFile {
+ public static final String JMOD_FILE_CLASSNAME = "jdk.internal.jmod.JmodFile";
+
+ public static void checkMagic(Path file) throws IOException {
+ try {
+ init();
+ checkMagicMethod.invoke(null, file);
+ } catch (InvocationTargetException ex) {
+ if (ex.getCause() instanceof IOException) {
+ throw IOException.class.cast(ex.getCause());
+ }
+ throw new Abort(ex);
+ } catch (IllegalAccessException | IllegalArgumentException | SecurityException ex) {
+ throw new Abort(ex);
+ }
+ }
+
+ // -----------------------------------------------------------------------------------------
+
+ private static Class<?> jmodFileClass = null;
+ private static Method checkMagicMethod = null;
+
+ private static void init() {
+ if (jmodFileClass == null) {
+ try {
+ jmodFileClass = Class.forName(JMOD_FILE_CLASSNAME, false, null);
+ checkMagicMethod = jmodFileClass.getDeclaredMethod("checkMagic", Path.class);
+ } catch (ClassNotFoundException | NoSuchMethodException | SecurityException ex) {
+ throw new Abort(ex);
+ }
+ }
+ }
+ }
}