From 7aaa3f9a29c280f01c677c918932620be45cdbd7 Mon Sep 17 00:00:00 2001
From: Vitaly Takmazov
Date: Thu, 8 Nov 2018 21:38:27 +0300
Subject: Merge everything into single Spring Boot application

---
 src/main/java/com/juick/util/StreamUtils.java | 38 +++++++++++++++++++++++++++
 1 file changed, 38 insertions(+)
 create mode 100644 src/main/java/com/juick/util/StreamUtils.java

(limited to 'src/main/java/com/juick/util/StreamUtils.java')

diff --git a/src/main/java/com/juick/util/StreamUtils.java b/src/main/java/com/juick/util/StreamUtils.java
new file mode 100644
index 00000000..576107af
--- /dev/null
+++ b/src/main/java/com/juick/util/StreamUtils.java
@@ -0,0 +1,38 @@
+package com.juick.util;
+
+import java.util.Spliterator;
+import java.util.Spliterators;
+import java.util.function.Consumer;
+import java.util.function.Predicate;
+import java.util.stream.Stream;
+import java.util.stream.StreamSupport;
+
+/**
+ * @deprecated switch to JDK9+ Stream API when possible
+ */
+@Deprecated
+public class StreamUtils {
+    private static <T> Spliterator<T> takeWhile(
+            Spliterator<T> splitr, Predicate<? super T> predicate) {
+        return new Spliterators.AbstractSpliterator<T>(splitr.estimateSize(), 0) {
+            boolean stillGoing = true;
+            @Override public boolean tryAdvance(Consumer<? super T> consumer) {
+                if (stillGoing) {
+                    boolean hadNext = splitr.tryAdvance(elem -> {
+                        if (predicate.test(elem)) {
+                            consumer.accept(elem);
+                        } else {
+                            stillGoing = false;
+                        }
+                    });
+                    return hadNext && stillGoing;
+                }
+                return false;
+            }
+        };
+    }
+
+    public static <T> Stream<T> takeWhile(Stream<T> stream, Predicate<? super T> predicate) {
+        return StreamSupport.stream(takeWhile(stream.spliterator(), predicate), false);
+    }
+}
-- 
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