From ab4721a8b321e5714bdc9c50fe8478747cd5e467 Mon Sep 17 00:00:00 2001
From: Ahmed Ashour <asashour@yahoo.com>
Date: Tue, 9 Apr 2019 16:39:59 +0200
Subject: [PATCH] fix: don't rename R class in deobfuscation (#572) (PR #573)

---
 .../java/jadx/core/deobf/Deobfuscator.java    | 26 +++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/jadx-core/src/main/java/jadx/core/deobf/Deobfuscator.java b/jadx-core/src/main/java/jadx/core/deobf/Deobfuscator.java
index a5e69067a..4a85a69d7 100644
--- a/jadx-core/src/main/java/jadx/core/deobf/Deobfuscator.java
+++ b/jadx-core/src/main/java/jadx/core/deobf/Deobfuscator.java
@@ -226,6 +226,9 @@ public class Deobfuscator {
 	}
 
 	private void processClass(ClassNode cls) {
+		if (isR(cls.getParentClass())) {
+			return;
+		}
 		ClassInfo clsInfo = cls.getClassInfo();
 		String fullName = getClassFullName(clsInfo);
 		if (!fullName.equals(clsInfo.getFullName())) {
@@ -559,4 +562,27 @@ public class Deobfuscator {
 	public PackageNode getRootPackage() {
 		return rootPackage;
 	}
+
+	private static boolean isR(ClassNode cls) {
+		if (!cls.getClassInfo().getShortName().equals("R")) {
+			return false;
+		}
+		if (!cls.getMethods().isEmpty() || !cls.getFields().isEmpty()) {
+			return false;
+		}
+		for (ClassNode inner : cls.getInnerClasses()) {
+			for (MethodNode m : inner.getMethods()) {
+				if (!m.getMethodInfo().isConstructor() && !m.getMethodInfo().isClassInit()) {
+					return false;
+				}
+			}
+			for (FieldNode field : cls.getFields()) {
+				ArgType type = field.getType();
+				if (type != ArgType.INT && (!type.isArray() || type.getArrayElement() != ArgType.INT)) {
+					return false;
+				}
+			}
+		}
+		return true;
+	}
 }