Initial commit

sources/io/reactivex/internal/operators/observable/ObservableTakeLast.java

@@ -0,0 +1,80 @@
+package io.reactivex.internal.operators.observable;
+
+import io.reactivex.ObservableSource;
+import io.reactivex.Observer;
+import io.reactivex.disposables.Disposable;
+import io.reactivex.internal.disposables.DisposableHelper;
+import java.util.ArrayDeque;
+
+/* loaded from: classes2.dex */
+public final class ObservableTakeLast<T> extends AbstractObservableWithUpstream<T, T> {
+    final int b;
+
+    static final class TakeLastObserver<T> extends ArrayDeque<T> implements Observer<T>, Disposable {
+        final Observer<? super T> a;
+        final int b;
+        Disposable c;
+        volatile boolean d;
+
+        TakeLastObserver(Observer<? super T> observer, int i) {
+            this.a = observer;
+            this.b = i;
+        }
+
+        @Override // io.reactivex.disposables.Disposable
+        public void dispose() {
+            if (this.d) {
+                return;
+            }
+            this.d = true;
+            this.c.dispose();
+        }
+
+        @Override // io.reactivex.Observer
+        public void onComplete() {
+            Observer<? super T> observer = this.a;
+            while (!this.d) {
+                T poll = poll();
+                if (poll == null) {
+                    if (this.d) {
+                        return;
+                    }
+                    observer.onComplete();
+                    return;
+                }
+                observer.onNext(poll);
+            }
+        }
+
+        @Override // io.reactivex.Observer
+        public void onError(Throwable th) {
+            this.a.onError(th);
+        }
+
+        @Override // io.reactivex.Observer
+        public void onNext(T t) {
+            if (this.b == size()) {
+                poll();
+            }
+            offer(t);
+        }
+
+        @Override // io.reactivex.Observer
+        public void onSubscribe(Disposable disposable) {
+            if (DisposableHelper.validate(this.c, disposable)) {
+                this.c = disposable;
+                this.a.onSubscribe(this);
+            }
+        }
+    }
+
+    public ObservableTakeLast(ObservableSource<T> observableSource, int i) {
+        super(observableSource);
+        this.b = i;
+    }
+
+    @Override // io.reactivex.Observable
+    public void subscribeActual(Observer<? super T> observer) {
+        this.a.subscribe(new TakeLastObserver(observer, this.b));
+    }
+}