diff -r 3e6fe94f02a8 -r e68aa1253821 jdk/src/share/classes/java/util/stream/StreamBuilder.java --- a/jdk/src/share/classes/java/util/stream/StreamBuilder.java Thu Jul 25 20:10:48 2013 +0530 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,265 +0,0 @@ -/* - * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. - * - * This code is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 only, as - * published by the Free Software Foundation. Oracle designates this - * particular file as subject to the "Classpath" exception as provided - * by Oracle in the LICENSE file that accompanied this code. - * - * This code is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * version 2 for more details (a copy is included in the LICENSE file that - * accompanied this code). - * - * You should have received a copy of the GNU General Public License version - * 2 along with this work; if not, write to the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. - * - * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA - * or visit www.oracle.com if you need additional information or have any - * questions. - */ -package java.util.stream; - -import java.util.function.Consumer; -import java.util.function.DoubleConsumer; -import java.util.function.IntConsumer; -import java.util.function.LongConsumer; - -/** - * A mutable builder for a {@code Stream}. This allows the creation of a - * {@code Stream} by generating elements individually and adding them to the - * {@code StreamBuilder} (without the copying overhead that comes from using - * an {@code ArrayList} as a temporary buffer.) - * - *
A {@code StreamBuilder} has a lifecycle, where it starts in a building - * phase, during which elements can be added, and then transitions to a built - * phase, after which elements may not be added. The built phase begins - * when the {@link #build()} method is called, which creates an ordered - * {@code Stream} whose elements are the elements that were added to the stream - * builder, in the order they were added. - * - *
Primitive specializations of {@code StreamBuilder} are provided
- * for {@link OfInt int}, {@link OfLong long}, and {@link OfDouble double}
- * values.
- *
- * @param A stream builder has a lifecycle, where it starts in a building
- * phase, during which elements can be added, and then transitions to a
- * built phase, after which elements may not be added. The built phase
- * begins when the {@link #build()} method is called, which creates an
- * ordered stream whose elements are the elements that were added to the
- * stream builder, in the order they were added.
- *
- * @see IntStream#builder()
- * @since 1.8
- */
- interface OfInt extends IntConsumer {
-
- /**
- * Adds an element to the stream being built.
- *
- * @throws IllegalStateException if the builder has already transitioned
- * to the built state
- */
- @Override
- void accept(int t);
-
- /**
- * Adds an element to the stream being built.
- *
- * @implSpec
- * The default implementation behaves as if:
- * A stream builder has a lifecycle, where it starts in a building
- * phase, during which elements can be added, and then transitions to a
- * built phase, after which elements may not be added. The built phase
- * begins when the {@link #build()} method is called, which creates an
- * ordered stream whose elements are the elements that were added to the
- * stream builder, in the order they were added.
- *
- * @see LongStream#builder()
- * @since 1.8
- */
- interface OfLong extends LongConsumer {
-
- /**
- * Adds an element to the stream being built.
- *
- * @throws IllegalStateException if the builder has already transitioned
- * to the built state
- */
- @Override
- void accept(long t);
-
- /**
- * Adds an element to the stream being built.
- *
- * @implSpec
- * The default implementation behaves as if:
- * A stream builder has a lifecycle, where it starts in a building
- * phase, during which elements can be added, and then transitions to a
- * built phase, after which elements may not be added. The built phase
- * begins when the {@link #build()} method is called, which creates an
- * ordered stream whose elements are the elements that were added to the
- * stream builder, in the order they were added.
- *
- * @see LongStream#builder()
- * @since 1.8
- */
- interface OfDouble extends DoubleConsumer {
-
- /**
- * Adds an element to the stream being built.
- *
- * @throws IllegalStateException if the builder has already transitioned
- * to the built state
- */
- @Override
- void accept(double t);
-
- /**
- * Adds an element to the stream being built.
- *
- * @implSpec
- * The default implementation behaves as if:
- * {@code
- * accept(t)
- * return this;
- * }
- *
- * @param t the element to add
- * @return {@code this} builder
- * @throws IllegalStateException if the builder has already transitioned to
- * the built state
- */
- default StreamBuilder{@code
- * accept(t)
- * return this;
- * }
- *
- * @param t the element to add
- * @return {@code this} builder
- * @throws IllegalStateException if the builder has already transitioned
- * to the built state
- */
- default StreamBuilder.OfInt add(int t) {
- accept(t);
- return this;
- }
-
- /**
- * Builds the stream, transitioning this builder to the built state.
- * An {@code IllegalStateException} is thrown if there are further
- * attempts to operate on the builder after it has entered the built
- * state.
- *
- * @return the built stream
- * @throws IllegalStateException if the builder has already transitioned to
- * the built state
- */
- IntStream build();
- }
-
- /**
- * A mutable builder for a {@code LongStream}.
- *
- * {@code
- * accept(t)
- * return this;
- * }
- *
- * @param t the element to add
- * @return {@code this} builder
- * @throws IllegalStateException if the builder has already transitioned
- * to the built state
- */
- default StreamBuilder.OfLong add(long t) {
- accept(t);
- return this;
- }
-
- /**
- * Builds the stream, transitioning this builder to the built state.
- * An {@code IllegalStateException} is thrown if there are further
- * attempts to operate on the builder after it has entered the built
- * state.
- *
- * @return the built stream
- * @throws IllegalStateException if the builder has already transitioned
- * to the built state
- */
- LongStream build();
- }
-
- /**
- * A mutable builder for a {@code DoubleStream}.
- *
- * {@code
- * accept(t)
- * return this;
- * }
- *
- * @param t the element to add
- * @return {@code this} builder
- * @throws IllegalStateException if the builder has already transitioned
- * to the built state
- */
- default StreamBuilder.OfDouble add(double t) {
- accept(t);
- return this;
- }
-
- /**
- * Builds the stream, transitioning this builder to the built state.
- * An {@code IllegalStateException} is thrown if there are further
- * attempts to operate on the builder after it has entered the built
- * state.
- *
- * @return the built stream
- * @throws IllegalStateException if the builder has already transitioned
- * to the built state
- */
- DoubleStream build();
- }
-}