Bug when text is null

[MoonfaceDev]

When code is null, this error occurs:

java.lang.NullPointerException: Attempt to invoke interface method 'int android.text.Editable.length()' on a null object reference at com.github.ahmadaghazadeh.editor.widget.CodeEditor.getIndexForEndOfLine(CodeEditor.java:369) at com.github.ahmadaghazadeh.editor.processor.TextProcessor.onDraw(TextProcessor.java:905) at android.view.View.draw(View.java:20207) at android.view.View.buildDrawingCacheImpl(View.java:19478) at android.view.View.buildDrawingCache(View.java:19338) at android.view.View.updateDisplayListIfDirty(View.java:19059) at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:4317) at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:4290) at android.view.View.updateDisplayListIfDirty(View.java:19042) at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:4317) at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:4290) at android.view.View.updateDisplayListIfDirty(View.java:19042) at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:4317) at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:4290) at android.view.View.updateDisplayListIfDirty(View.java:19042) at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:4317) at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:4290) at android.view.View.updateDisplayListIfDirty(View.java:19042) at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:4317) at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:4290) at android.view.View.updateDisplayListIfDirty(View.java:19042) at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:4317) at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:4290) at android.view.View.updateDisplayListIfDirty(View.java:19042) at android.view.ViewGroup.recreateChildDisplayList(ViewGroup.java:4317) at android.view.ViewGroup.dispatchGetDisplayList(ViewGroup.java:4290) at android.view.View.updateDisplayListIfDirty(View.java:19042) at android.view.View.draw(View.java:19935) at android.view.ViewGroup.drawChild(ViewGroup.java:4333) at android.view.ViewGroup.dispatchDraw(ViewGroup.java:4112) at android.view.View.draw(View.java:20210) at com.android.internal.policy.DecorView.draw(DecorView.java:780) at android.view.View.updateDisplayListIfDirty(View.java:19082) at android.view.ThreadedRenderer.updateViewTreeDisplayList(ThreadedRenderer.java:686) at android.view.ThreadedRenderer.updateRootDisplayList(ThreadedRenderer.java:692) at android.view.ThreadedRenderer.draw(ThreadedRenderer.java:801) at android.view.ViewRootImpl.draw(ViewRootImpl.java:3312) at android.view.ViewRootImpl.performDraw(ViewRootImpl.java:3116) at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:2485) at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1460) at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:7184) at android.view.Choreographer$CallbackRecord.run(Choreographer.java:949) at android.view.Choreographer.doCallbacks(Choreographer.java:761) at android.view.Choreographer.doFrame(Choreographer.java:696) at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:935) at android.os.Handler.handleCallback(Handler.java:873) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:193) at android.app.ActivityThread.main(ActivityThread.java:6669) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)