hg: lambda/lambda/jdk: - pipeline wrapping spliterators should conform to spliterator contract

[paul.sandoz at oracle.com]

Changeset: 2f52eeca15e5
Author:    psandoz
Date:      2012-11-29 15:14 +0100
URL:       http://hg.openjdk.java.net/lambda/lambda/jdk/rev/2f52eeca15e5

- pipeline wrapping spliterators should conform to spliterator contract
- obtain the size, if known, from a spliterator before traversing
operations are performed as such operations may be greedy and consume
elements thus affecting the size.
- when obtaining a spliterator for a depth 0 i.e. the source spliterator
try to return the best spliterator for use with parallel streams.

! src/share/classes/java/util/stream/AbstractPipeline.java
! src/share/classes/java/util/stream/StreamShapeFactory.java