fix(gui): split decompile and index tasks for correct time counting (#1361)

jadx-core/src/main/java/jadx/api/JadxDecompiler.java

@@ -310,7 +310,13 @@ public final class JadxDecompiler implements Closeable {
 			}
 			processQueue.add(cls);
 		}
-		for (List<JavaClass> decompileBatch : decompileScheduler.buildBatches(processQueue)) {
+		List<List<JavaClass>> batches;
+		try {
+			batches = decompileScheduler.buildBatches(processQueue);
+		} catch (Exception e) {
+			throw new JadxRuntimeException("Decompilation batches build failed", e);
+		}
+		for (List<JavaClass> decompileBatch : batches) {
 			tasks.add(() -> {
 				for (JavaClass cls : decompileBatch) {
 					try {

jadx-core/src/main/java/jadx/api/JavaClass.java

@@ -69,6 +69,10 @@ public final class JavaClass implements JavaNode {
 		cls.unloadCode();
 	}
 
+	public boolean isNoCode() {
+		return cls.contains(AFlag.DONT_GENERATE);
+	}
+
 	public synchronized String getSmali() {
 		return cls.getDisassembledCode();
 	}

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

@@ -358,6 +358,17 @@ public class ClassNode extends NotificationAttrNode implements ILoadable, ICodeN
 		return codeInfo;
 	}
 
+	@Nullable
+	public ICodeInfo getCodeFromCache() {
+		ICodeCache codeCache = root().getCodeCache();
+		String clsRawName = getRawName();
+		ICodeInfo codeInfo = codeCache.get(clsRawName);
+		if (codeInfo == ICodeInfo.EMPTY) {
+			return null;
+		}
+		return codeInfo;
+	}
+
 	@Override
 	public void load() {
 		for (MethodNode mth : getMethods()) {