Merge branch 'GTNewHorizons:master' into master

1 files changed, 57 insertions, 0 deletions

diff --git a/src/main/java/gtPlusPlus/preloader/CustomClassLoader.java b/src/main/java/gtPlusPlus/preloader/CustomClassLoader.java
new file mode 100644
index 0000000000..56394c11f0
--- /dev/null
+++ b/src/main/java/gtPlusPlus/preloader/CustomClassLoader.java
@@ -0,0 +1,57 @@
+package gtPlusPlus.preloader;
+
+import java.security.AllPermission;
+import java.security.CodeSource;
+import java.security.Permissions;
+import java.security.ProtectionDomain;
+import java.security.cert.Certificate;
+import java.util.HashMap;
+
+import org.objectweb.asm.ClassWriter;
+import org.objectweb.asm.tree.ClassNode;
+
+public class CustomClassLoader extends ClassLoader {
+
+	private HashMap<String, ClassNode> classes = new HashMap<String, ClassNode>();
+
+	@Override
+
+	public Class<?> loadClass(String name) throws ClassNotFoundException {
+		return findClass(name);
+	}
+
+	@Override
+
+	protected Class<?> findClass(String name) throws ClassNotFoundException {
+		ClassNode node = classes.get(name.replace('.', '/'));
+		if (node != null)
+			return nodeToClass(node);
+		else
+			return super.findClass(name);
+	}
+
+	public final void addNode(ClassNode node) {
+		classes.put(node.name, node);
+	}
+
+	private final Class<?> nodeToClass(ClassNode node) {
+		if (super.findLoadedClass(node.name) != null)
+			return findLoadedClass(node.name);
+		ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);
+		node.accept(cw);
+		byte[] b = cw.toByteArray();
+		return defineClass(node.name.replace('/', '.'), b, 0, b.length,	getDomain());
+	}
+
+	private final ProtectionDomain getDomain() {
+		CodeSource code = new CodeSource(null, (Certificate[]) null);
+		return new ProtectionDomain(code, getPermissions());
+	}
+
+	private final Permissions getPermissions() {
+		Permissions permissions = new Permissions();
+		permissions.add(new AllPermission());
+		return permissions;
+	}
+
+}
\ No newline at end of file