src/java.base/share/classes/java/util/ArrayDeque.java

8197531: Miscellaneous changes imported from jsr166 CVS 2018-04
Reviewed-by: martin, psandoz

*** 206,216 ****
       * @param c the collection whose elements are to be placed into the deque
       * @throws NullPointerException if the specified collection is null
       */
      public ArrayDeque(Collection<? extends E> c) {
          this(c.size());
!         addAll(c);
      }
  
      /**
       * Circularly increments i, mod modulus.
       * Precondition and postcondition: 0 <= i < modulus.
--- 206,216 ----
       * @param c the collection whose elements are to be placed into the deque
       * @throws NullPointerException if the specified collection is null
       */
      public ArrayDeque(Collection<? extends E> c) {
          this(c.size());
!         copyElements(c);
      }
  
      /**
       * Circularly increments i, mod modulus.
       * Precondition and postcondition: 0 <= i < modulus.
*** 320,333 ****
       */
      public boolean addAll(Collection<? extends E> c) {
          final int s, needed;
          if ((needed = (s = size()) + c.size() + 1 - elements.length) > 0)
              grow(needed);
!         c.forEach(this::addLast);
          return size() > s;
      }
  
      /**
       * Inserts the specified element at the front of this deque.
       *
       * @param e the element to add
       * @return {@code true} (as specified by {@link Deque#offerFirst})
--- 320,337 ----
       */
      public boolean addAll(Collection<? extends E> c) {
          final int s, needed;
          if ((needed = (s = size()) + c.size() + 1 - elements.length) > 0)
              grow(needed);
!         copyElements(c);
          return size() > s;
      }
  
+     private void copyElements(Collection<? extends E> c) {
+         c.forEach(this::addLast);
+     }
+ 
      /**
       * Inserts the specified element at the front of this deque.
       *
       * @param e the element to add
       * @return {@code true} (as specified by {@link Deque#offerFirst})