Initial revision

From-SVN: r26263

libjava/java/lang/ClassLoader.java

@@ -0,0 +1,94 @@
+// ClassLoader.java - Define policies for loading Java classes.
+
+/* Copyright (C) 1998, 1999  Cygnus Solutions
+
+   This file is part of libgcj.
+
+This software is copyrighted work licensed under the terms of the
+Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
+details.  */
+
+package java.lang;
+import java.io.InputStream;
+import java.util.Hashtable;
+
+/**
+ * @author Tom Tromey <tromey@cygnus.com>
+ * @date October 28, 1998 
+ */
+
+/* Written using "Java Class Libraries", 2nd edition, ISBN 0-201-31002-3
+ * Status: Just a stub; not useful at all.
+ */
+
+public abstract class ClassLoader
+{
+  protected ClassLoader ()
+    {
+      cache = new Hashtable ();
+    }
+
+  protected final Class defineClass (String className, byte[] bytecode,
+				     int offset, int length)
+    {
+      throw new ClassFormatError ("defineClass unimplemented");
+    }
+
+  protected final Class defineClass (byte[] bytecodes,
+				     int offset, int length)
+    {
+      return defineClass (null, bytecodes, offset, length);
+    }
+
+  protected final Class findLoadedClass (String className)
+    {
+      return (Class) cache.get(className);
+    }
+
+  protected final Class findSystemClass (String className)
+    throws ClassNotFoundException
+    {
+      Class c = system.findLoadedClass(className);
+      system.resolveClass(c);
+      return c;
+    }
+
+  // FIXME: Needs URL.
+  // public URL getResource (String resName);
+
+  public InputStream getResourceAsStream (String resName)
+    {
+      return null;
+    }
+
+  // FIXME: Needs URL.
+  // public static final URL getSystemResource (String resName);
+
+  public static final InputStream getSystemResourceAsStream (String resName)
+    {
+      return null;
+    }
+
+  protected abstract Class loadClass (String className, boolean resolve)
+    throws ClassNotFoundException;
+  public Class loadClass (String name) throws ClassNotFoundException
+    {
+      return loadClass (name, true);
+    }
+
+  protected final void resolveClass (Class c)
+    {
+      // Nothing for now.
+    }
+
+  protected final void setSigners (Class cl, Object[] signers)
+    {
+      // Nothing for now.
+    }
+
+  // Class cache.
+  private Hashtable cache;
+
+  // The system class loader.  FIXME: should have an actual value
+  private static final ClassLoader system = null;
+}