Fixed number deobfuscator

src/me/ByteEdit/edit/Assembler.java

@@ -53,7 +53,7 @@ import me.ByteEdit.utils.UnicodeUtils;
 
 public class Assembler {
 
-	private static final Pattern SPACE = Pattern.compile(" ");
+	public static final Pattern SPACE = Pattern.compile(" ");
 
 	public static ClassNode assemble(String input) {
 		Main.txtByteEditView.removeAllLineHighlights();
@@ -841,7 +841,9 @@ public class Assembler {
 								UnicodeUtils.unescape(hsr, split2[3].substring(6, split2[3].length() - 1)),
 								Integer.parseInt(split2[1].substring(7)), Integer.parseInt(split2[2].substring(5)));
 					} else if (str.startsWith("\"") && str.endsWith("\"")) {
-						val = UnicodeUtils.unescape(hsr, str.substring(1, str.length() - 1));
+						val = UnicodeUtils.unescape(hsr, str.substring(1, str.length() - 1), true);
+					} else if (str.startsWith("#")) {
+						val = UnicodeUtils.unescape(hsr, str);
 					} else if (str.endsWith("l")) {
 						val = Long.parseLong(str.substring(0, str.length() - 1));
 					} else if (str.endsWith("f")) {

src/me/ByteEdit/edit/Disassembler.java

@@ -24,6 +24,7 @@ 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.InsnList;
 import org.objectweb.asm.tree.InsnNode;
 import org.objectweb.asm.tree.IntInsnNode;
 import org.objectweb.asm.tree.InvokeDynamicInsnNode;
@@ -419,9 +420,18 @@ 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()) {
@@ -449,9 +459,21 @@ public class Disassembler {
 			tryCatchTable = ctx.finish();
 		} else
 			tryCatchTable = "";
-		AbstractInsnNode[] insns = mn.instructions.toArray();
-		StringContext ctx = new StringContext(insns.length);
-		for (AbstractInsnNode n : insns) {
+
+		if (deobfNumbers) {
+			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 };
@@ -619,8 +641,14 @@ public class Disassembler {
 				s += "\n\t\t]\n";
 				return s;
 			} else {
-				return "\t\t" + OpcodesReverse.reverseOpcode(node.getOpcode()) + " "
-						+ ClassUtil.getDecompiledValue(node.cst, "", hs) + "\n";
+				String decomp = ClassUtil.getDecompiledValue(node.cst, "", hs);
+				if (node.cst instanceof String) {
+					if (decomp.startsWith("\"#") && decomp.endsWith("\""))
+						decomp = decomp.substring(1, decomp.length() - 1);
+					else if (decomp.startsWith("\"\\u0023"))
+						decomp = "\"#" + decomp.substring(7);
+				}
+				return "\t\t" + OpcodesReverse.reverseOpcode(node.getOpcode()) + " " + decomp + "\n";
 			}
 		});
 		iiMap.put(VarInsnNode.class, (n, labels, hs) -> {

src/me/ByteEdit/edit/StackBasedCalculator.java

@@ -0,0 +1,693 @@
+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() == 8) {
+				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
+				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 {
+			throw new RuntimeException("Unexpected number: " + n);
+		}
+	}
+
+}

src/me/ByteEdit/main/Main.java

@@ -17,11 +17,14 @@ import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
 import java.awt.event.KeyAdapter;
 import java.awt.event.KeyEvent;
+import java.awt.event.MouseEvent;
+import java.io.BufferedReader;
 import java.io.ByteArrayOutputStream;
 import java.io.File;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
+import java.io.StringReader;
 import java.util.ArrayList;
 import java.util.Collection;
 import java.util.Collections;
@@ -75,7 +78,9 @@ import org.fife.ui.rsyntaxtextarea.RSyntaxTextArea;
 import org.fife.ui.rsyntaxtextarea.SyntaxConstants;
 import org.fife.ui.rsyntaxtextarea.folding.CurlyFoldParser;
 import org.fife.ui.rsyntaxtextarea.folding.FoldParserManager;
+import org.fife.ui.rtextarea.RTextArea;
 import org.fife.ui.rtextarea.RTextScrollPane;
+import org.fife.ui.rtextarea.ToolTipSupplier;
 import org.objectweb.asm.ClassReader;
 import org.objectweb.asm.ClassWriter;
 import org.objectweb.asm.tree.ClassNode;
@@ -143,6 +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();
 
@@ -411,6 +418,12 @@ 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);
@@ -594,6 +607,84 @@ public class Main extends JFrame {
 		txtByteEditView = new RSyntaxTextArea();
 		ac.install(txtByteEditView);
 		txtByteEditView.setCodeFoldingEnabled(true);
+		// ToolTips for HugeStrings
+		txtByteEditView.setToolTipSupplier(new ToolTipSupplier() {
+
+			@Override
+			public String getToolTipText(RTextArea textArea, MouseEvent e) {
+				int idx = textArea.viewToModel(e.getPoint());
+				if (idx < 0)
+					return null;
+				int subIdx = Math.max(idx - 15, 0);
+				int subLen = Math.min(30, textArea.getDocument().getLength() - subIdx);
+				if (subLen <= 0)
+					return null;
+				try {
+					String cut = textArea.getText(subIdx, subLen);
+					int hashIdx = -1;
+					for (int off = idx - subIdx; off >= 0; off--) {
+						if (cut.charAt(off) == '#') {
+							hashIdx = off;
+							break;
+						}
+					}
+					if (hashIdx < 0) {
+						for (int off = idx - subIdx; off < cut.length(); off++) {
+							if (cut.charAt(off) == '#') {
+								hashIdx = off;
+								break;
+							}
+						}
+					}
+					if (hashIdx < 0)
+						return null;
+					if (hashIdx >= 5 && cut.substring(hashIdx - 5, hashIdx).equals("ldc \"")) // ldc "#..."
+						return null;
+					int numLen = 1;
+					for (int i = hashIdx + 1; i < cut.length(); i++) {
+						if (!(cut.charAt(i) - '0' >= 0 && cut.charAt(i) - '0' <= 9)) {
+							break;
+						}
+						numLen++;
+					}
+					if (numLen < 2 || hashIdx > idx - subIdx || idx - subIdx - numLen >= hashIdx)
+						return null;
+					String hashNum = cut.substring(hashIdx, hashIdx + numLen);
+
+					String txt = txtByteEditView.getText();
+					int len = 0;
+					for (String asm : txt.split("\\/\\/ #Annotations:\n")) {
+						len += 19; // "\\/\\/ #Annotations:\n".length()
+						if (asm.isEmpty())
+							continue;
+						if (idx >= len && idx < len + asm.length()) {
+							try (BufferedReader reader = new BufferedReader(new StringReader(asm))) {
+								String s;
+								while (!(s = reader.readLine()).startsWith("// #SourceFile: ")) {
+								}
+								while (!(s = reader.readLine()).equals("// #Fields")) {
+									if (s.startsWith("#")) {
+										String[] split = Assembler.SPACE.split(s, 2);
+										if (hashNum.equals(split[0].substring(0, split[0].length() - 1))) {
+											String toolTip = split[1];
+											if (toolTip.length() > 500)
+												toolTip = toolTip.substring(0, 500) + "...";
+											return toolTip;
+										}
+									}
+								}
+							} catch (IOException e1) {
+							}
+							break;
+						} else {
+							len += asm.length();
+						}
+					}
+				} catch (BadLocationException e1) {
+				}
+				return null;
+			}
+		});
 		txtByteEditView.addKeyListener(new KeyAdapter() {
 
 			@Override

src/org/fife/ui/rsyntaxtextarea/TokenImpl.java

@@ -403,6 +403,9 @@ public class TokenImpl implements Token {
 		int last = getOffset();
 		FontMetrics fm = null;
 		while (token != null && token.isPaintable()) {
+			if (token.textCount > 10000) {
+				return getOffset() + (int) (x / 7);
+			}
 			fm = textArea.getFontMetricsForTokenType(token.getType());
 			char[] text = token.text;
 			int start = token.textOffset;
@@ -786,6 +789,13 @@ public class TokenImpl implements Token {
 		this.type = type;
 	}
 
+	public void reset() {
+		text = null;
+		offset = -1;
+		type = Token.NULL;
+		nextToken = null;
+	}
+
 	/**
 	 * {@inheritDoc}
 	 */