fix: allow to regenerate class code (#791)

jadx-core/src/main/java/jadx/core/dex/nodes/ClassNode.java

@@ -40,7 +40,7 @@ import jadx.core.utils.exceptions.DecodeException;
 import jadx.core.utils.exceptions.JadxRuntimeException;
 
 import static jadx.core.dex.nodes.ProcessState.LOADED;
-import static jadx.core.dex.nodes.ProcessState.UNLOADED;
+import static jadx.core.dex.nodes.ProcessState.NOT_LOADED;
 
 public class ClassNode extends LineAttrNode implements ILoadable, ICodeNode {
 	private static final Logger LOG = LoggerFactory.getLogger(ClassNode.class);
@@ -262,23 +262,33 @@ public class ClassNode extends LineAttrNode implements ILoadable, ICodeNode {
 		}
 	}
 
-	public synchronized ICodeInfo decompile() {
+	public ICodeInfo decompile() {
+		return decompile(true);
+	}
+
+	public ICodeInfo getCode() {
+		return decompile(true);
+	}
+
+	public ICodeInfo reloadCode() {
+		return decompile(false);
+	}
+
+	private synchronized ICodeInfo decompile(boolean searchInCache) {
 		ICodeCache codeCache = root().getCodeCache();
 		ClassNode topParentClass = getTopParentClass();
 		String clsRawName = topParentClass.getRawName();
-		ICodeInfo code = codeCache.get(clsRawName);
-		if (code != null) {
-			return code;
+		if (searchInCache) {
+			ICodeInfo code = codeCache.get(clsRawName);
+			if (code != null) {
+				return code;
+			}
 		}
 		ICodeInfo codeInfo = ProcessClass.generateCode(topParentClass);
 		codeCache.add(clsRawName, codeInfo);
 		return codeInfo;
 	}
 
-	public ICodeInfo getCode() {
-		return decompile();
-	}
-
 	@Override
 	public void load() {
 		for (MethodNode mth : getMethods()) {
@@ -300,7 +310,7 @@ public class ClassNode extends LineAttrNode implements ILoadable, ICodeNode {
 		innerClasses.forEach(ClassNode::unload);
 		fields.forEach(FieldNode::unloadAttributes);
 		unloadAttributes();
-		setState(UNLOADED);
+		setState(NOT_LOADED);
 	}
 
 	private void buildCache() {

jadx-core/src/main/java/jadx/core/dex/nodes/ProcessState.java

@@ -4,15 +4,13 @@ public enum ProcessState {
 	NOT_LOADED,
 	LOADED,
 	PROCESS_STARTED,
-	PROCESS_COMPLETE,
-	GENERATED,
-	UNLOADED;
+	PROCESS_COMPLETE;
 
 	public boolean isLoaded() {
 		return this != NOT_LOADED;
 	}
 
 	public boolean isProcessed() {
-		return this == PROCESS_COMPLETE || this == GENERATED || this == UNLOADED;
+		return this == PROCESS_COMPLETE;
 	}
 }