Better frames

src/me/ByteEdit/edit/Assembler.java

@@ -674,118 +674,41 @@ public class Assembler {
 			labels.put(ln, labelNr);
 			return new LineNumberNode(Integer.parseInt(s.split(" ")[0]), ln);
 		} else if (s.startsWith("// frame ")) {
-			String str1 = s.substring(7);
+			String str1 = s.substring(9);
-			String str = str1.substring(str1.indexOf(' ', 3) + 1);
+			String[] split = str1.split(" ", 2);
-			Object[] local;
-			Object[] stack;
-			ArrayList<Object> arr = new ArrayList<>();
-			if (str.startsWith("l:null")) {
-				local = new Object[0];
-			} else {
-				String l = str.substring(3, str.indexOf("s:") - 2);
-				if (l.isEmpty()) {
-					local = new Object[0];
-				} else {
-					for (String asd : l.split(", ")) {
-						if (!asd.startsWith("(")) {
-							int frameType = ClassUtil.getFrameTypeByName(asd);
-							if (frameType != -1)
-								arr.add(new Integer(frameType));
-							else
-								arr.add(UnicodeUtils.unescape(hsr, asd.substring(1, asd.length() - 1)));
-						} else {
-							if (asd.startsWith("(label) ")) {
-								int labelNr = Integer.parseInt(asd.split(" ")[1]);
-								boolean found = false;
-								for (Map.Entry<LabelNode, Integer> entry : labels.entrySet()) {
-									if (entry.getValue() == labelNr) {
-										arr.add(entry.getKey());
-										found = true;
-									}
-								}
-								if (!found) {
-									LabelNode ln = new LabelNode(new Label());
-									labels.put(ln, labelNr);
-									arr.add(ln);
-								}
-							} else {
-								arr.add(ClassUtil.getCastedValue(asd.split(" ")[1], asd.split("\\) ")[0].substring(1)));
-							}
-						}
-					}
-					local = new Object[arr.size()];
-					int c = 0;
-					for (Object o : arr) {
-						local[c] = o;
-						c++;
-					}
-				}
-			}
-			arr.clear();
-			if (str.endsWith("s:null")) {
-				stack = new Object[0];
-			} else {
-				String st = str.substring(str.indexOf("s:") + 3, str.length() - 1);
-				if (st.isEmpty()) {
-					stack = new Object[0];
-				} else {
-					for (String asd : st.split(", ")) {
-						if (!asd.startsWith("(")) {
-							int frameType = ClassUtil.getFrameTypeByName(asd);
-							if (frameType != -1)
-								arr.add(new Integer(frameType));
-							else
-								arr.add(UnicodeUtils.unescape(hsr, asd.substring(1, asd.length() - 1)));
-						} else {
-							if (asd.startsWith("(label) ")) {
-								int labelNr = Integer.parseInt(asd.split(" ")[1]);
-								boolean found = false;
-								for (Map.Entry<LabelNode, Integer> entry : labels.entrySet()) {
-									if (entry.getValue() == labelNr) {
-										arr.add(entry.getKey());
-										found = true;
-									}
-								}
-								if (!found) {
-									LabelNode ln = new LabelNode(new Label());
-									labels.put(ln, labelNr);
-									arr.add(ln);
-								}
-							} else {
-								arr.add(ClassUtil.getCastedValue(asd.split(" ")[1], asd.split("\\) ")[0].substring(1)));
-							}
-						}
-					}
-					stack = new Object[arr.size()];
-					int c = 0;
-					for (Object o : arr) {
-						stack[c] = o;
-						c++;
-					}
-				}
-			}
 			int type = 0;
-			switch (str1.substring(str1.indexOf(' ', 1) + 1, str1.indexOf(' ', 3))) {
+			Object[] local = null;
-			case "NEW":
+			Object[] stack = null;
-				type = Opcodes.F_NEW;
+			int localLen = 0;
-				break;
+			int stackLen = 0;
-			case "FULL":
+			switch (split[0].toUpperCase()) {
-				type = Opcodes.F_FULL;
-				break;
-			case "APPEND":
-				type = Opcodes.F_APPEND;
-				break;
-			case "CHOP":
-				type = Opcodes.F_CHOP;
-				break;
 			case "SAME":
 				type = Opcodes.F_SAME;
 				break;
 			case "SAME1":
 				type = Opcodes.F_SAME1;
+				stack = parseFrameList(hsr, split[1], labels);
+				stackLen = stack.length;
+				break;
+			case "CHOP":
+				type = Opcodes.F_CHOP;
+				localLen = Integer.parseInt(split[1]);
+				break;
+			case "APPEND":
+				type = Opcodes.F_APPEND;
+				local = parseFrameList(hsr, split[1], labels);
+				localLen = local.length;
+				break;
+			case "FULL":
+				type = Opcodes.F_FULL;
+				split = split[1].split("\\] \\[", 2);
+				local = parseFrameList(hsr, split[0] + "]", labels);
+				localLen = local.length;
+				stack = parseFrameList(hsr, "[" + split[1], labels);
+				stackLen = stack.length;
 				break;
 			}
-			return new FrameNode(type, local.length, local, stack.length, stack);
+			return new FrameNode(type, localLen, local, stackLen, stack);
 		} else {
 			String[] split = s.split(" ");
 			String command = split[0];
@@ -823,10 +746,10 @@ public class Assembler {
 			case "dconst_1":
 				return new InsnNode(15);
 			case "bipush": {
-				return new IntInsnNode(16, Integer.parseInt(split[1]));
+				return new IntInsnNode(16, (byte) Integer.parseInt(split[1]));
 			}
 			case "sipush": {
-				return new IntInsnNode(17, Integer.parseInt(split[1]));
+				return new IntInsnNode(17, (short) Integer.parseInt(split[1]));
 			}
 			case "ldc": {
 				String str = consolidateStrings(split, 1);
@@ -1633,4 +1556,48 @@ public class Assembler {
 			}
 		}
 	}
+
+	private static Object[] parseFrameList(HugeStringsRev hsr, String str, HashMap<LabelNode, Integer> labels) {
+		ArrayList<Object> list = new ArrayList<>();
+		String l = str.substring(1, str.length() - 1);
+		if (l.isEmpty()) {
+			return new Object[0];
+		} else {
+			for (String asd : l.split(", ")) {
+				if (!asd.startsWith("(")) {
+					int frameType = ClassUtil.getFrameTypeByName(asd);
+					if (frameType != -1)
+						list.add(new Integer(frameType));
+					else
+						list.add(UnicodeUtils.unescape(hsr, asd.substring(1, asd.length() - 1)));
+				} else {
+					if (asd.startsWith("(label) ")) {
+						int labelNr = Integer.parseInt(asd.split(" ")[1]);
+						boolean found = false;
+						for (Map.Entry<LabelNode, Integer> entry : labels.entrySet()) {
+							if (entry.getValue() == labelNr) {
+								list.add(entry.getKey());
+								found = true;
+							}
+						}
+						if (!found) {
+							LabelNode ln = new LabelNode(new Label());
+							labels.put(ln, labelNr);
+							list.add(ln);
+						}
+					} else {
+						list.add(ClassUtil.getCastedValue(asd.split(" ")[1], asd.split("\\) ")[0].substring(1)));
+					}
+				}
+			}
+			Object[] arr = new Object[list.size()];
+			int c = 0;
+			for (Object o : list) {
+				arr[c] = o;
+				c++;
+			}
+			return arr;
+		}
+	}
+
 }

src/me/ByteEdit/edit/Disassembler.java

@@ -1,5 +1,22 @@
 package me.ByteEdit.edit;
 
+import static org.objectweb.asm.tree.AbstractInsnNode.FIELD_INSN;
+import static org.objectweb.asm.tree.AbstractInsnNode.FRAME;
+import static org.objectweb.asm.tree.AbstractInsnNode.IINC_INSN;
+import static org.objectweb.asm.tree.AbstractInsnNode.INSN;
+import static org.objectweb.asm.tree.AbstractInsnNode.INT_INSN;
+import static org.objectweb.asm.tree.AbstractInsnNode.INVOKE_DYNAMIC_INSN;
+import static org.objectweb.asm.tree.AbstractInsnNode.JUMP_INSN;
+import static org.objectweb.asm.tree.AbstractInsnNode.LABEL;
+import static org.objectweb.asm.tree.AbstractInsnNode.LDC_INSN;
+import static org.objectweb.asm.tree.AbstractInsnNode.LINE;
+import static org.objectweb.asm.tree.AbstractInsnNode.LOOKUPSWITCH_INSN;
+import static org.objectweb.asm.tree.AbstractInsnNode.METHOD_INSN;
+import static org.objectweb.asm.tree.AbstractInsnNode.MULTIANEWARRAY_INSN;
+import static org.objectweb.asm.tree.AbstractInsnNode.TABLESWITCH_INSN;
+import static org.objectweb.asm.tree.AbstractInsnNode.TYPE_INSN;
+import static org.objectweb.asm.tree.AbstractInsnNode.VAR_INSN;
+
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.HashMap;
@@ -24,7 +41,7 @@ import org.objectweb.asm.tree.FieldNode;
 import org.objectweb.asm.tree.FrameNode;
 import org.objectweb.asm.tree.IincInsnNode;
 import org.objectweb.asm.tree.InnerClassNode;
-import org.objectweb.asm.tree.InsnNode;
+import org.objectweb.asm.tree.InsnList;
 import org.objectweb.asm.tree.IntInsnNode;
 import org.objectweb.asm.tree.InvokeDynamicInsnNode;
 import org.objectweb.asm.tree.JumpInsnNode;
@@ -419,9 +436,18 @@ public class Disassembler {
 		HashMap<Label, Integer> labels = new HashMap<Label, Integer>();
 		String localVarTable;
 		String tryCatchTable;
-		for (AbstractInsnNode n : mn.instructions.toArray()) {
+
+		InsnList insnList = mn.instructions;
+		boolean deobfNumbers = Main.INSTANCE.mntmNumbers.isSelected();
+
+		ArrayList<Label> labelsReversed = deobfNumbers ? new ArrayList<>() : null;
+
+		for (AbstractInsnNode n = insnList.getFirst(); n != null; n = n.getNext()) {
 			if (n instanceof LabelNode) {
-				labels.put(((LabelNode) n).getLabel(), labels.size() + 1);
+				int id = labels.size() + 1;
+				if (deobfNumbers)
+					labelsReversed.add(((LabelNode) n).getLabel());
+				labels.put(((LabelNode) n).getLabel(), id);
 			}
 		}
 		if (mn.localVariables != null && !mn.localVariables.isEmpty()) {
@@ -449,110 +475,62 @@ public class Disassembler {
 			tryCatchTable = ctx.finish();
 		} else
 			tryCatchTable = "";
-		AbstractInsnNode[] insns = mn.instructions.toArray();
+
-		StringContext ctx = new StringContext(insns.length);
+		if (deobfNumbers) {
-		for (AbstractInsnNode n : insns) {
+			StackBasedCalculator calc = new StackBasedCalculator(insnList);
+			calc.run();
+			insnList = calc.get();
+			int i = 0;
+			for (AbstractInsnNode n = insnList.getFirst(); n != null; n = n.getNext()) {
+				if (n instanceof LabelNode) {
+					((LabelNode) n).setLabel(labelsReversed.get(i++));
+				}
+			}
+		}
+
+		StringContext ctx = new StringContext(insnList.size());
+		for (AbstractInsnNode n = insnList.getFirst(); n != null; n = n.getNext()) {
 			ctx.next(disassembleInstruction(n, labels, hs));
 		}
 		return new String[] { ctx.finish(), localVarTable, tryCatchTable };
 	}
 
-	public static final HashMap<Class, InstructionInterface> iiMap = new HashMap<>();
+	public static String disassembleInstruction(AbstractInsnNode n, HashMap<Label, Integer> labels, HugeStrings hs) {
-
+		switch (n.getType()) {
-	static {
+		case INSN: {
-		iiMap.put(FieldInsnNode.class, (n, labels, hs) -> {
+			return "\t\t" + OpcodesReverse.reverseOpcode(n.getOpcode()) + "\n";
+		}
+		case INT_INSN: {
+			IntInsnNode node = (IntInsnNode) n;
+			if (n.getOpcode() == Opcodes.NEWARRAY) {
+				return "\t\t" + OpcodesReverse.reverseOpcode(n.getOpcode()) + " "
+						+ ClassUtil.getArrayTypeByID(node.operand) + "\n";
+			} else {
+				return "\t\t" + OpcodesReverse.reverseOpcode(n.getOpcode()) + " " + node.operand + "\n";
+			}
+		}
+		case VAR_INSN: {
+			VarInsnNode node = (VarInsnNode) n;
+			return "\t\t" + OpcodesReverse.reverseOpcode(n.getOpcode()) + " " + node.var + "\n";
+		}
+		case TYPE_INSN: {
+			TypeInsnNode node = (TypeInsnNode) n;
+			return "\t\t" + OpcodesReverse.reverseOpcode(node.getOpcode()) + " "
+					+ UnicodeUtils.escapeWithSpaces(hs, node.desc) + "\n";
+		}
+		case FIELD_INSN: {
 			FieldInsnNode node = (FieldInsnNode) n;
 			return "\t\t" + OpcodesReverse.reverseOpcode(node.getOpcode()) + " "
 					+ UnicodeUtils.escapeWithSpaces(hs, node.desc) + " " + UnicodeUtils.escapeWithSpaces(hs, node.owner)
 					+ "/" + UnicodeUtils.escapeWithSpaces(hs, node.name).replace("/", "\\u002F") + "\n";
-		});
-		iiMap.put(LabelNode.class, (n, labels, hs) -> {
-			LabelNode node = (LabelNode) n;
-			return "\t\t// label " + labels.get(node.getLabel()) + "\n";
-		});
-		iiMap.put(FrameNode.class, (n, labels, hs) -> {
-			FrameNode node = (FrameNode) n;
-			String type = "";
-			switch (node.type) {
-			case Opcodes.F_NEW:
-				type = "NEW";
-				break;
-			case Opcodes.F_FULL:
-				type = "FULL";
-				break;
-			case Opcodes.F_APPEND:
-				type = "APPEND";
-				break;
-			case Opcodes.F_CHOP:
-				type = "CHOP";
-				break;
-			case Opcodes.F_SAME:
-				type = "SAME";
-				break;
-			case Opcodes.F_SAME1:
-				type = "SAME1";
-				break;
 		}
-			String s = "\t\t// frame " + type + " l:";
+		case METHOD_INSN: {
-			ArrayList<String> arr = new ArrayList<>();
+			MethodInsnNode node = (MethodInsnNode) n;
-			if (node.local != null) {
+			return "\t\t" + OpcodesReverse.reverseOpcode(node.getOpcode()) + " "
-				for (Object o : node.local) {
+					+ UnicodeUtils.escapeWithSpaces(hs, node.desc) + " " + UnicodeUtils.escapeWithSpaces(hs, node.owner)
-					if (o == null) {
+					+ "/" + UnicodeUtils.escapeWithSpaces(hs, node.name).replace("/", "\\u002F") + "\n";
-						arr.add(null);
-					} else {
-						if (o instanceof String) {
-							arr.add("\"" + UnicodeUtils.escapeWithSpaces(hs, (String) o) + "\"");
-						} else if (o instanceof LabelNode) {
-							arr.add("(label) " + labels.get(((LabelNode) o).getLabel()));
-						} else if (o instanceof Integer) {
-							String frameType = ClassUtil.getFrameTypeByID(((Integer) o).intValue());
-							if (frameType != null)
-								arr.add(frameType);
-							else
-								arr.add("(" + o.getClass().getName().replace(".", "/") + ") " + o);
-						} else {
-							arr.add("(" + o.getClass().getName().replace(".", "/") + ") " + o);
 		}
-					}
+		case INVOKE_DYNAMIC_INSN: {
-				}
-				s += arr.toString();
-			} else {
-				s += "null";
-			}
-			arr.clear();
-			s += " s:";
-			if (node.stack != null) {
-				for (Object o : node.stack) {
-					if (o == null) {
-						arr.add(null);
-					} else {
-						if (o instanceof String) {
-							arr.add("\"" + UnicodeUtils.escapeWithSpaces(hs, (String) o) + "\"");
-						} else if (o instanceof LabelNode) {
-							arr.add("(label) " + labels.get(((LabelNode) o).getLabel()));
-						} else if (o instanceof Integer) {
-							String frameType = ClassUtil.getFrameTypeByID(((Integer) o).intValue());
-							if (frameType != null)
-								arr.add(frameType);
-							else
-								arr.add("(" + o.getClass().getName().replace(".", "/") + ") " + o);
-						} else {
-							arr.add("(" + o.getClass().getName().replace(".", "/") + ") " + o);
-						}
-					}
-				}
-				s += arr.toString();
-			} else {
-				s += "null";
-			}
-			s += "\n";
-			return s;
-		});
-		iiMap.put(LineNumberNode.class, (n, labels, hs) -> {
-			LineNumberNode node = (LineNumberNode) n;
-			return "\t\t// line " + node.line + " " + labels.get(node.start.getLabel()) + "\n";
-		});
-		iiMap.put(InvokeDynamicInsnNode.class, (n, labels, hs) -> {
 			InvokeDynamicInsnNode node = (InvokeDynamicInsnNode) n;
 			String s = "\t\t" + OpcodesReverse.reverseOpcode(node.getOpcode()) + " [\n\t\t\tname: "
 					+ UnicodeUtils.escapeWithSpaces(hs, node.name).replace("/", "\\u002F") + "\n\t\t\tdesc: "
@@ -588,24 +566,17 @@ public class Disassembler {
 			}
 			s += "\t\t\t]\n\t\t]\n";
 			return s;
-		});
+		}
-		iiMap.put(MethodInsnNode.class, (n, labels, hs) -> {
+		case JUMP_INSN: {
-			MethodInsnNode node = (MethodInsnNode) n;
+			JumpInsnNode node = (JumpInsnNode) n;
-			return "\t\t" + OpcodesReverse.reverseOpcode(node.getOpcode()) + " "
+			return "\t\t" + OpcodesReverse.reverseOpcode(n.getOpcode()) + " " + labels.get(node.label.getLabel())
-					+ UnicodeUtils.escapeWithSpaces(hs, node.desc) + " " + UnicodeUtils.escapeWithSpaces(hs, node.owner)
+					+ "\n";
-					+ "/" + UnicodeUtils.escapeWithSpaces(hs, node.name).replace("/", "\\u002F") + "\n";
+		}
-		});
+		case LABEL: {
-		iiMap.put(TypeInsnNode.class, (n, labels, hs) -> {
+			LabelNode node = (LabelNode) n;
-			TypeInsnNode node = (TypeInsnNode) n;
+			return "\t\t// label " + labels.get(node.getLabel()) + "\n";
-			return "\t\t" + OpcodesReverse.reverseOpcode(node.getOpcode()) + " "
+		}
-					+ UnicodeUtils.escapeWithSpaces(hs, node.desc) + "\n";
+		case LDC_INSN: {
-		});
-		iiMap.put(MultiANewArrayInsnNode.class, (n, labels, hs) -> {
-			MultiANewArrayInsnNode node = (MultiANewArrayInsnNode) n;
-			return "\t\t" + OpcodesReverse.reverseOpcode(node.getOpcode()) + " "
-					+ UnicodeUtils.escapeWithSpaces(hs, node.desc) + " " + node.dims + "\n";
-		});
-		iiMap.put(LdcInsnNode.class, (n, labels, hs) -> {
 			LdcInsnNode node = (LdcInsnNode) n;
 			if (node.cst instanceof Type) {
 				Type type = (Type) node.cst;
@@ -628,30 +599,12 @@ public class Disassembler {
 				}
 				return "\t\t" + OpcodesReverse.reverseOpcode(node.getOpcode()) + " " + decomp + "\n";
 			}
-		});
-		iiMap.put(VarInsnNode.class, (n, labels, hs) -> {
-			VarInsnNode node = (VarInsnNode) n;
-			return "\t\t" + OpcodesReverse.reverseOpcode(n.getOpcode()) + " " + node.var + "\n";
-		});
-		iiMap.put(InsnNode.class, (n, labels, hs) -> {
-			InsnNode node = (InsnNode) n;
-			return "\t\t" + OpcodesReverse.reverseOpcode(n.getOpcode()) + "\n";
-		});
-		iiMap.put(IntInsnNode.class, (n, labels, hs) -> {
-			IntInsnNode node = (IntInsnNode) n;
-			if (n.getOpcode() == Opcodes.NEWARRAY) {
-				return "\t\t" + OpcodesReverse.reverseOpcode(n.getOpcode()) + " "
-						+ ClassUtil.getArrayTypeByID(node.operand) + "\n";
-			} else {
-				return "\t\t" + OpcodesReverse.reverseOpcode(n.getOpcode()) + " " + node.operand + "\n";
 		}
-		});
+		case IINC_INSN: {
-		iiMap.put(JumpInsnNode.class, (n, labels, hs) -> {
+			IincInsnNode node = (IincInsnNode) n;
-			JumpInsnNode node = (JumpInsnNode) n;
+			return "\t\t" + OpcodesReverse.reverseOpcode(n.getOpcode()) + " " + node.var + " " + node.incr + "\n";
-			return "\t\t" + OpcodesReverse.reverseOpcode(n.getOpcode()) + " " + labels.get(node.label.getLabel())
+		}
-					+ "\n";
+		case TABLESWITCH_INSN: {
-		});
-		iiMap.put(TableSwitchInsnNode.class, (n, labels, hs) -> {
 			TableSwitchInsnNode node = (TableSwitchInsnNode) n;
 			String s = "\t\t" + OpcodesReverse.reverseOpcode(n.getOpcode()) + " [\n\t\t\tmin: " + node.min
 					+ "\n\t\t\tmax: " + node.max + "\n\t\t\tdefault: " + labels.get(node.dflt.getLabel())
@@ -661,8 +614,8 @@ public class Disassembler {
 			}
 			s += "\t\t\t]\n\t\t]\n";
 			return s;
-		});
+		}
-		iiMap.put(LookupSwitchInsnNode.class, (n, labels, hs) -> {
+		case LOOKUPSWITCH_INSN: {
 			LookupSwitchInsnNode node = (LookupSwitchInsnNode) n;
 			String s = "\t\t" + OpcodesReverse.reverseOpcode(n.getOpcode()) + " [\n\t\t\tdefault: "
 					+ labels.get(node.dflt.getLabel()) + "\n\t\t\tkeys: [\n";
@@ -675,24 +628,70 @@ public class Disassembler {
 			}
 			s += "\t\t\t]\n\t\t]\n";
 			return s;
-		});
-		iiMap.put(IincInsnNode.class, (n, labels, hs) -> {
-			IincInsnNode node = (IincInsnNode) n;
-			return "\t\t" + OpcodesReverse.reverseOpcode(n.getOpcode()) + " " + node.var + " " + node.incr + "\n";
-		});
 		}
-
+		case MULTIANEWARRAY_INSN: {
-	static interface InstructionInterface {
+			MultiANewArrayInsnNode node = (MultiANewArrayInsnNode) n;
-		String apply(AbstractInsnNode n, HashMap<Label, Integer> labels, HugeStrings hs);
+			return "\t\t" + OpcodesReverse.reverseOpcode(node.getOpcode()) + " "
+					+ UnicodeUtils.escapeWithSpaces(hs, node.desc) + " " + node.dims + "\n";
 		}
-
+		case FRAME: {
-	public static String disassembleInstruction(AbstractInsnNode n, HashMap<Label, Integer> labels, HugeStrings hs) {
+			FrameNode node = (FrameNode) n;
-		InstructionInterface ii = iiMap.get(n.getClass());
+			String out = "";
-		if (ii != null)
+			switch (node.type) {
-			return ii.apply(n, labels, hs);
+			case Opcodes.F_SAME:
-		else
+				out = "SAME";
+				break;
+			case Opcodes.F_SAME1:
+				out = "SAME1 " + getFrameArray(hs, node.stack, labels);
+				break;
+			case Opcodes.F_CHOP:
+				out = "CHOP " + Integer.toString(node.local.size());
+				break;
+			case Opcodes.F_APPEND:
+				out = "APPEND " + getFrameArray(hs, node.local, labels);
+				break;
+			case Opcodes.F_FULL:
+				out = "FULL " + getFrameArray(hs, node.local, labels) + " " + getFrameArray(hs, node.stack, labels);
+				break;
+			}
+			return "\t\t// frame " + out + "\n";
+		}
+		case LINE: {
+			LineNumberNode node = (LineNumberNode) n;
+			return "\t\t// line " + node.line + " " + labels.get(node.start.getLabel()) + "\n";
+		}
+		default: {
 			return "\t\tNOT HANDLED! " + OpcodesReverse.reverseOpcode(n.getOpcode()) + " "
 					+ n.getClass().getSimpleName() + "\n";
 		}
+		}
+	}
+
+	private static String getFrameArray(HugeStrings hs, List<Object> list, HashMap<Label, Integer> labels) {
+		ArrayList<String> arr = new ArrayList<>();
+		if (list != null) {
+			for (Object o : list) {
+				if (o == null) {
+					arr.add(null);
+				} else {
+					if (o instanceof String) {
+						arr.add("\"" + UnicodeUtils.escapeWithSpaces(hs, (String) o) + "\"");
+					} else if (o instanceof LabelNode) {
+						arr.add("(label) " + labels.get(((LabelNode) o).getLabel()));
+					} else if (o instanceof Integer) {
+						String frameType = ClassUtil.getFrameTypeByID(((Integer) o).intValue());
+						if (frameType != null)
+							arr.add(frameType);
+						else
+							arr.add("(" + o.getClass().getName().replace(".", "/") + ") " + o);
+					} else {
+						arr.add("(" + o.getClass().getName().replace(".", "/") + ") " + o);
+					}
+				}
+			}
+			return arr.toString();
+		}
+		return "null";
+	}
 
 }

src/me/ByteEdit/edit/StackBasedCalculator.java

@@ -0,0 +1,689 @@
+package me.ByteEdit.edit;
+
+import java.util.EmptyStackException;
+import java.util.HashMap;
+import java.util.Stack;
+
+import org.objectweb.asm.Opcodes;
+import org.objectweb.asm.tree.AbstractInsnNode;
+import org.objectweb.asm.tree.InsnList;
+import org.objectweb.asm.tree.InsnNode;
+import org.objectweb.asm.tree.IntInsnNode;
+import org.objectweb.asm.tree.LabelNode;
+import org.objectweb.asm.tree.LdcInsnNode;
+
+public class StackBasedCalculator implements Opcodes, Runnable {
+
+	private final InsnList insns;
+	private final Stack<Number> stack = new Stack<>();
+	private AbstractInsnNode start;
+	private int startIdx = -1;
+	private boolean isAtEnd = false;
+
+	public StackBasedCalculator(InsnList insns) {
+		this.insns = new InsnList();
+
+		HashMap<LabelNode, LabelNode> labelMap = new HashMap<>();
+		for (AbstractInsnNode node = insns.getFirst(); node != null; node = node.getNext()) {
+			if (node.getType() == AbstractInsnNode.LABEL) {
+				labelMap.put((LabelNode) node, new LabelNode());
+			}
+		}
+
+		for (AbstractInsnNode node = insns.getFirst(); node != null; node = node.getNext()) {
+			this.insns.add(node.clone(labelMap));
+		}
+	}
+
+	public InsnList get() {
+		return insns;
+	}
+
+	@Override
+	public void run() {
+		while (!isAtEnd) {
+			out: {
+				AbstractInsnNode[] arr = insns.toArray();
+				for (int i = startIdx == -1 ? 0 : startIdx; i < arr.length; i++) {
+					if (!handle(arr[i]))
+						break out;
+				}
+				isAtEnd = true;
+			}
+		}
+	}
+
+	private boolean handle(AbstractInsnNode node) {
+		try {
+			switch (node.getOpcode()) {
+			case ICONST_0:
+				stack.push(Integer.valueOf(0));
+				if (start == null)
+					start = node;
+				break;
+			case ICONST_1:
+				stack.push(Integer.valueOf(1));
+				if (start == null)
+					start = node;
+				break;
+			case ICONST_2:
+				stack.push(Integer.valueOf(2));
+				if (start == null)
+					start = node;
+				break;
+			case ICONST_3:
+				stack.push(Integer.valueOf(3));
+				if (start == null)
+					start = node;
+				break;
+			case ICONST_4:
+				stack.push(Integer.valueOf(4));
+				if (start == null)
+					start = node;
+				break;
+			case ICONST_5:
+				stack.push(Integer.valueOf(5));
+				if (start == null)
+					start = node;
+				break;
+			case ICONST_M1:
+				stack.push(Integer.valueOf(-1));
+				if (start == null)
+					start = node;
+				break;
+			case DCONST_0:
+				stack.push(Double.valueOf(0));
+				if (start == null)
+					start = node;
+				break;
+			case DCONST_1:
+				stack.push(Double.valueOf(1));
+				if (start == null)
+					start = node;
+				break;
+			case FCONST_0:
+				stack.push(Float.valueOf(0));
+				if (start == null)
+					start = node;
+				break;
+			case FCONST_1:
+				stack.push(Float.valueOf(1));
+				if (start == null)
+					start = node;
+				break;
+			case FCONST_2:
+				stack.push(Float.valueOf(2));
+				if (start == null)
+					start = node;
+				break;
+			case LCONST_0:
+				stack.push(Long.valueOf(0));
+				if (start == null)
+					start = node;
+				break;
+			case LCONST_1:
+				stack.push(Long.valueOf(1));
+				if (start == null)
+					start = node;
+				break;
+			case BIPUSH:
+			case SIPUSH:
+				stack.push(((IntInsnNode) node).operand);
+				if (start == null)
+					start = node;
+				break;
+			case D2F:
+				stack.push(((Double) stack.pop()).floatValue());
+				change(node);
+				return false;
+			case D2I:
+				stack.push(((Double) stack.pop()).intValue());
+				change(node);
+				return false;
+			case D2L:
+				stack.push(((Double) stack.pop()).longValue());
+				change(node);
+				return false;
+			case F2D:
+				stack.push(((Float) stack.pop()).doubleValue());
+				change(node);
+				return false;
+			case F2I:
+				stack.push(((Float) stack.pop()).intValue());
+				change(node);
+				return false;
+			case F2L:
+				stack.push(((Float) stack.pop()).longValue());
+				change(node);
+				return false;
+			case L2D:
+				stack.push(((Long) stack.pop()).doubleValue());
+				change(node);
+				return false;
+			case L2F:
+				stack.push(((Long) stack.pop()).floatValue());
+				change(node);
+				return false;
+			case L2I:
+				stack.push(((Long) stack.pop()).intValue());
+				change(node);
+				return false;
+			case I2B:
+				error(node);
+				return true;
+			case I2C:
+				error(node);
+				return true;
+			case I2D:
+				stack.push(((Integer) stack.pop()).doubleValue());
+				change(node);
+				return false;
+			case I2F:
+				stack.push(((Integer) stack.pop()).floatValue());
+				change(node);
+				return false;
+			case I2L:
+				stack.push(((Integer) stack.pop()).longValue());
+				change(node);
+				return false;
+			case I2S:
+				error(node);
+				return true;
+			case NOP:
+				break;
+			case LDC:
+				LdcInsnNode ldc = (LdcInsnNode) node;
+				if (ldc.cst instanceof Number) {
+					stack.push((Number) ldc.cst);
+					if (start == null)
+						start = node;
+				} else {
+					error(node);
+					return true;
+				}
+				break;
+			// long
+			case LADD: {
+				long top = ((Long) stack.pop()).longValue();
+				long bottom = ((Long) stack.pop()).longValue();
+				stack.push(bottom + top);
+				change(node);
+				return false;
+			}
+			case LSUB: {
+				long top = ((Long) stack.pop()).longValue();
+				long bottom = ((Long) stack.pop()).longValue();
+				stack.push(bottom - top);
+				change(node);
+				return false;
+			}
+			case LMUL: {
+				long top = ((Long) stack.pop()).longValue();
+				long bottom = ((Long) stack.pop()).longValue();
+				stack.push(bottom * top);
+				change(node);
+				return false;
+			}
+			case LDIV: {
+				long top = ((Long) stack.pop()).longValue();
+				long bottom = ((Long) stack.pop()).longValue();
+				stack.push(bottom / top);
+				change(node);
+				return false;
+			}
+			case LREM: {
+				long top = ((Long) stack.pop()).longValue();
+				long bottom = ((Long) stack.pop()).longValue();
+				stack.push(bottom % top);
+				change(node);
+				return false;
+			}
+			case LNEG: {
+				long top = ((Long) stack.pop()).longValue();
+				stack.push(-top);
+				change(node);
+				return false;
+			}
+			case LAND: {
+				long top = ((Long) stack.pop()).longValue();
+				long bottom = ((Long) stack.pop()).longValue();
+				stack.push(bottom & top);
+				change(node);
+				return false;
+			}
+			case LOR: {
+				long top = ((Long) stack.pop()).longValue();
+				long bottom = ((Long) stack.pop()).longValue();
+				stack.push(bottom | top);
+				change(node);
+				return false;
+			}
+			case LXOR: {
+				long top = ((Long) stack.pop()).longValue();
+				long bottom = ((Long) stack.pop()).longValue();
+				stack.push(bottom ^ top);
+				change(node);
+				return false;
+			}
+			case LSHR: {
+				int top = ((Integer) stack.pop()).intValue();
+				long bottom = ((Long) stack.pop()).longValue();
+				stack.push(bottom >> top);
+				change(node);
+				return false;
+			}
+			case LSHL: {
+				int top = ((Integer) stack.pop()).intValue();
+				long bottom = ((Long) stack.pop()).longValue();
+				stack.push(bottom << top);
+				change(node);
+				return false;
+			}
+			case LUSHR: {
+				int top = ((Integer) stack.pop()).intValue();
+				long bottom = ((Long) stack.pop()).longValue();
+				stack.push(bottom >>> top);
+				change(node);
+				return false;
+			}
+			// int
+			case IADD: {
+				int top = ((Integer) stack.pop()).intValue();
+				int bottom = ((Integer) stack.pop()).intValue();
+				stack.push(bottom + top);
+				change(node);
+				return false;
+			}
+			case ISUB: {
+				int top = ((Integer) stack.pop()).intValue();
+				int bottom = ((Integer) stack.pop()).intValue();
+				stack.push(bottom - top);
+				change(node);
+				return false;
+			}
+			case IMUL: {
+				int top = ((Integer) stack.pop()).intValue();
+				int bottom = ((Integer) stack.pop()).intValue();
+				stack.push(bottom * top);
+				change(node);
+				return false;
+			}
+			case IDIV: {
+				int top = ((Integer) stack.pop()).intValue();
+				int bottom = ((Integer) stack.pop()).intValue();
+				stack.push(bottom / top);
+				change(node);
+				return false;
+			}
+			case IREM: {
+				int top = ((Integer) stack.pop()).intValue();
+				int bottom = ((Integer) stack.pop()).intValue();
+				stack.push(bottom % top);
+				change(node);
+				return false;
+			}
+			case INEG: {
+				int top = ((Integer) stack.pop()).intValue();
+				stack.push(-top);
+				change(node);
+				return false;
+			}
+			case IAND: {
+				int top = ((Integer) stack.pop()).intValue();
+				int bottom = ((Integer) stack.pop()).intValue();
+				stack.push(bottom & top);
+				change(node);
+				return false;
+			}
+			case IOR: {
+				int top = ((Integer) stack.pop()).intValue();
+				int bottom = ((Integer) stack.pop()).intValue();
+				stack.push(bottom | top);
+				change(node);
+				return false;
+			}
+			case IXOR: {
+				int top = ((Integer) stack.pop()).intValue();
+				int bottom = ((Integer) stack.pop()).intValue();
+				stack.push(bottom ^ top);
+				change(node);
+				return false;
+			}
+			case ISHR: {
+				int top = ((Integer) stack.pop()).intValue();
+				int bottom = ((Integer) stack.pop()).intValue();
+				stack.push(bottom >> top);
+				change(node);
+				return false;
+			}
+			case ISHL: {
+				int top = ((Integer) stack.pop()).intValue();
+				int bottom = ((Integer) stack.pop()).intValue();
+				stack.push(bottom << top);
+				change(node);
+				return false;
+			}
+			case IUSHR: {
+				int top = ((Integer) stack.pop()).intValue();
+				int bottom = ((Integer) stack.pop()).intValue();
+				stack.push(bottom >>> top);
+				change(node);
+				return false;
+			}
+			// double
+			case DADD: {
+				double top = ((Double) stack.pop()).doubleValue();
+				double bottom = ((Double) stack.pop()).doubleValue();
+				stack.push(bottom + top);
+				change(node);
+				return false;
+			}
+			case DSUB: {
+				double top = ((Double) stack.pop()).doubleValue();
+				double bottom = ((Double) stack.pop()).doubleValue();
+				stack.push(bottom - top);
+				change(node);
+				return false;
+			}
+			case DMUL: {
+				double top = ((Double) stack.pop()).doubleValue();
+				double bottom = ((Double) stack.pop()).doubleValue();
+				stack.push(bottom * top);
+				change(node);
+				return false;
+			}
+			case DDIV: {
+				double top = ((Double) stack.pop()).doubleValue();
+				double bottom = ((Double) stack.pop()).doubleValue();
+				stack.push(bottom / top);
+				change(node);
+				return false;
+			}
+			case DREM: {
+				double top = ((Double) stack.pop()).doubleValue();
+				double bottom = ((Double) stack.pop()).doubleValue();
+				stack.push(bottom % top);
+				change(node);
+				return false;
+			}
+			case DNEG: {
+				double top = ((Double) stack.pop()).doubleValue();
+				stack.push(-top);
+				change(node);
+				return false;
+			}
+			// float
+			case FADD: {
+				float top = ((Float) stack.pop()).floatValue();
+				float bottom = ((Float) stack.pop()).floatValue();
+				stack.push(bottom + top);
+				change(node);
+				return false;
+			}
+			case FSUB: {
+				float top = ((Float) stack.pop()).floatValue();
+				float bottom = ((Float) stack.pop()).floatValue();
+				stack.push(bottom - top);
+				change(node);
+				return false;
+			}
+			case FMUL: {
+				float top = ((Float) stack.pop()).floatValue();
+				float bottom = ((Float) stack.pop()).floatValue();
+				stack.push(bottom * top);
+				change(node);
+				return false;
+			}
+			case FDIV: {
+				float top = ((Float) stack.pop()).floatValue();
+				float bottom = ((Float) stack.pop()).floatValue();
+				stack.push(bottom / top);
+				change(node);
+				return false;
+			}
+			case FREM: {
+				float top = ((Float) stack.pop()).floatValue();
+				float bottom = ((Float) stack.pop()).floatValue();
+				stack.push(bottom % top);
+				change(node);
+				return false;
+			}
+			case FNEG: {
+				float top = ((Float) stack.pop()).floatValue();
+				stack.push(-top);
+				change(node);
+				return false;
+			}
+			// dup
+			case DUP: {
+				Number num = stack.pop();
+				if (num instanceof Double || num instanceof Long) {
+					error(node);
+					return true;
+				}
+				stack.push(num);
+				stack.push(num);
+				change(node);
+				return false;
+			}
+			case DUP_X1: {
+				Number top = stack.pop();
+				Number bottom = stack.pop();
+				if (bottom instanceof Double || bottom instanceof Long || top instanceof Double
+						|| top instanceof Long) {
+					error(node);
+					return true;
+				}
+				stack.push(top);
+				stack.push(bottom);
+				stack.push(top);
+				change(node);
+				return false;
+			}
+			case DUP_X2: {
+				Number top = stack.pop();
+				Number bottom = stack.pop();
+				if (top instanceof Double || top instanceof Long) {
+					error(node);
+					return true;
+				}
+				Number bottom2 = null;
+				if (!(bottom instanceof Double || bottom instanceof Long)) {
+					bottom2 = stack.pop();
+					if (bottom instanceof Double || bottom instanceof Long) {
+						error(node);
+						return true;
+					}
+				}
+				stack.push(top);
+				if (bottom2 != null)
+					stack.push(bottom2);
+				stack.push(bottom);
+				stack.push(top);
+				change(node);
+				return false;
+			}
+			case DUP2: {
+				Number top = stack.pop();
+				Number bottom = null;
+				if (!(top instanceof Double || top instanceof Long)) {
+					bottom = stack.pop();
+					if (bottom instanceof Double || bottom instanceof Long) {
+						error(node);
+						return true;
+					}
+				}
+				if (bottom != null)
+					stack.push(bottom);
+				stack.push(top);
+				if (bottom != null)
+					stack.push(bottom);
+				stack.push(top);
+				change(node);
+				return false;
+			}
+			case DUP2_X1: {
+				Number top = stack.pop();
+				Number bottom = null;
+				if (!(top instanceof Double || top instanceof Long)) {
+					bottom = stack.pop();
+					if (bottom instanceof Double || bottom instanceof Long) {
+						error(node);
+						return true;
+					}
+				}
+				Number bottom2 = stack.pop();
+				if (bottom != null)
+					stack.push(bottom);
+				stack.push(top);
+				stack.push(bottom2);
+				if (bottom != null)
+					stack.push(bottom);
+				stack.push(top);
+				change(node);
+				return false;
+			}
+			case DUP2_X2: {
+				Number top = stack.pop();
+				Number bottom = null;
+				if (!(top instanceof Double || top instanceof Long)) {
+					bottom = stack.pop();
+					if (bottom instanceof Double || bottom instanceof Long) {
+						error(node);
+						return true;
+					}
+				}
+				Number top2 = stack.pop();
+				Number bottom2 = null;
+				if (!(top2 instanceof Double || top2 instanceof Long)) {
+					bottom2 = stack.pop();
+					if (bottom2 instanceof Double || bottom2 instanceof Long) {
+						error(node);
+						return true;
+					}
+				}
+				if (bottom != null)
+					stack.push(bottom);
+				stack.push(top);
+				if (bottom2 != null)
+					stack.push(bottom2);
+				stack.push(top2);
+				if (bottom != null)
+					stack.push(bottom);
+				stack.push(top);
+				change(node);
+				return false;
+			}
+			// stack
+			case POP:
+				stack.pop();
+				change(node);
+				return false;
+			case POP2:
+				stack.pop();
+				stack.pop();
+				change(node);
+				return false;
+			case SWAP: {
+				Number top = stack.pop();
+				Number bottom = stack.pop();
+				if (bottom instanceof Double || bottom instanceof Long || top instanceof Double
+						|| top instanceof Long) {
+					error(node);
+					return true;
+				}
+				stack.push(top);
+				stack.push(bottom);
+				change(node);
+				return false;
+			}
+			default:
+				error(node);
+				return true;
+			}
+		} catch (ClassCastException | EmptyStackException ex) {
+			error(node);
+			return true;
+		}
+		return true;
+	}
+
+	private void error(AbstractInsnNode node) {
+		change(node.getPrevious());
+		stack.clear();
+		start = null;
+	}
+
+	private void change(AbstractInsnNode node) {
+		if (start == null)
+			return;
+		int idx = insns.indexOf(start);
+		startIdx = idx;
+		int idx2 = insns.indexOf(node);
+		if (idx != idx2) {
+			for (int i = 0; i <= idx2 - idx; i++) {
+				insns.remove(insns.get(idx));
+			}
+			while (!stack.isEmpty()) {
+				addNode(idx, stack.pop());
+			}
+		}
+		stack.clear();
+		start = null;
+	}
+
+	private void addNode(int idx, Number n) {
+		if (n instanceof Double) {
+			double val = n.doubleValue();
+			if (val == 0.0)
+				insns.insertBefore(insns.get(idx), new InsnNode(DCONST_0));
+			else if (val == 1.0)
+				insns.insertBefore(insns.get(idx), new InsnNode(DCONST_1));
+			else
+				insns.insertBefore(insns.get(idx), new LdcInsnNode(val));
+		} else if (n instanceof Float) {
+			float val = n.floatValue();
+			if (val == 0.0f)
+				insns.insertBefore(insns.get(idx), new InsnNode(FCONST_0));
+			else if (val == 1.0f)
+				insns.insertBefore(insns.get(idx), new InsnNode(FCONST_1));
+			else if (val == 2.0f)
+				insns.insertBefore(insns.get(idx), new InsnNode(FCONST_2));
+			else
+				insns.insertBefore(insns.get(idx), new LdcInsnNode(val));
+		} else if (n instanceof Long) {
+			long val = n.longValue();
+			if (val == 0l)
+				insns.insertBefore(insns.get(idx), new InsnNode(LCONST_0));
+			else if (val == 1l)
+				insns.insertBefore(insns.get(idx), new InsnNode(LCONST_1));
+			else
+				insns.insertBefore(insns.get(idx), new LdcInsnNode(val));
+		} else if (n instanceof Integer) {
+			int val = n.intValue();
+			if (val == 0)
+				insns.insertBefore(insns.get(idx), new InsnNode(ICONST_0));
+			else if (val == 1)
+				insns.insertBefore(insns.get(idx), new InsnNode(ICONST_1));
+			else if (val == 2)
+				insns.insertBefore(insns.get(idx), new InsnNode(ICONST_2));
+			else if (val == 3)
+				insns.insertBefore(insns.get(idx), new InsnNode(ICONST_3));
+			else if (val == 4)
+				insns.insertBefore(insns.get(idx), new InsnNode(ICONST_4));
+			else if (val == 5)
+				insns.insertBefore(insns.get(idx), new InsnNode(ICONST_5));
+			else if (val == -1)
+				insns.insertBefore(insns.get(idx), new InsnNode(ICONST_M1));
+			else if (val == (byte) val)
+				insns.insertBefore(insns.get(idx), new IntInsnNode(BIPUSH, (byte) val));
+			else if (val == (short) val)
+				insns.insertBefore(insns.get(idx), new IntInsnNode(SIPUSH, (short) val));
+			else
+				insns.insertBefore(insns.get(idx), new LdcInsnNode(val));
+		} else {
+			throw new RuntimeException("Unexpected number: " + n);
+		}
+	}
+
+}

src/me/ByteEdit/main/Main.java

@@ -148,6 +148,8 @@ public class Main extends JFrame {
 	private JMenuItem rdbtnmntm5000;
 	private JMenuItem rdbtnmntm10000;
 	public JCheckBoxMenuItem mntmMultithreaded;
+	private JMenu mnDeobfuscation;
+	public JCheckBoxMenuItem mntmNumbers;
 
 	public static final Object treeLock = new Object();
 
@@ -229,7 +231,17 @@ public class Main extends JFrame {
 				"// #Max: l:0 s:0\n\t// #TryCatch:\n\t// #LocalVars:\n\tpublic static method ()V {\n\t\treturn\n\t}",
 				null, "<html><b><u>method</u></b><br>Creates an example method</html>"));
 		provider.addCompletion(new ShorthandCompletion(provider, "frame", "frame FULL l:[] s:[]", null,
-				"<html><b><u>frame</u></b><br>Creates a stack map frame</html>"));
+				"<html><b><u>frame</u></b><br>Creates a stack map frame<br><br><b>Possible frames:</b><br><ul><li><code>SAME: same locals, empty stack</code></li><li><code>SAME1: same locals, stack has 1 entry</code></li><li><code>CHOP: same locals - k, empty stack</code></li><li><code>APPEND: same locals + k, empty stack</code></li><li><code>FULL: define locals, define stack</code></li></ul></html>"));
+		provider.addCompletion(new BasicCompletion(provider, "SAME", null,
+				"<html><b><u>Frames:</u></b><br><code>SAME</code><br><br><u>Locals:</u> same as previous<br><u>Stack:</u> empty</html>"));
+		provider.addCompletion(new BasicCompletion(provider, "SAME1", null,
+				"<html><b><u>Frames:</u></b><br><code>SAME1 [(type)]</code><br><br><u>Locals:</u> same as previous<br><u>Stack:</u> 1 entry</html>"));
+		provider.addCompletion(new BasicCompletion(provider, "CHOP", null,
+				"<html><b><u>Frames:</u></b><br><code>CHOP (int:k)</code><br><br><u>Locals:</u> removes the top <i>k</i> elements<br><u>Stack:</u> empty</html>"));
+		provider.addCompletion(new BasicCompletion(provider, "APPEND", null,
+				"<html><b><u>Frames:</u></b><br><code>APPEND [(type), (type), ...]</code><br><br><u>Locals:</u> adds the elements to the top<br><u>Stack:</u> empty</html>"));
+		provider.addCompletion(new BasicCompletion(provider, "FULL", null,
+				"<html><b><u>Frames:</u></b><br><code>FULL [(type), (type), ...] [(type), (type), ...]</code><br><i>first locals, then stack</i><br><br><u>Locals:</u> sets the elements<br><u>Stack:</u> sets the elements</html>"));
 		return provider;
 	}
 
@@ -416,6 +428,12 @@ public class Main extends JFrame {
 		group.add(rdbtnmntm5000);
 		group.add(rdbtnmntm10000);
 
+		mnDeobfuscation = new JMenu("Deobfuscation");
+		menuBar.add(mnDeobfuscation);
+
+		mntmNumbers = new JCheckBoxMenuItem("Numbers");
+		mnDeobfuscation.add(mntmNumbers);
+
 		contentPane = new JPanel();
 		contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
 		setContentPane(contentPane);
@@ -672,7 +690,7 @@ public class Main extends JFrame {
 							len += asm.length();
 						}
 					}
-				} catch (BadLocationException e1) {
+				} catch (Exception e1) {
 				}
 				return null;
 			}