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Diffstat (limited to 'src/main/java/com/google/escapevelocity/ImmutableList.java')
-rw-r--r-- | src/main/java/com/google/escapevelocity/ImmutableList.java | 93 |
1 files changed, 0 insertions, 93 deletions
diff --git a/src/main/java/com/google/escapevelocity/ImmutableList.java b/src/main/java/com/google/escapevelocity/ImmutableList.java deleted file mode 100644 index 0b903f7..0000000 --- a/src/main/java/com/google/escapevelocity/ImmutableList.java +++ /dev/null @@ -1,93 +0,0 @@ -/* - * Copyright (C) 2017 Google, Inc. - * - * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except - * in compliance with the License. You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software distributed under the License - * is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express - * or implied. See the License for the specific language governing permissions and limitations under - * the License. - */ -package com.google.escapevelocity; - -import java.util.AbstractList; -import java.util.ArrayList; -import java.util.Arrays; -import java.util.Iterator; -import java.util.List; - -/** - * An immutable list. - * - * @author emcmanus@google.com (Éamonn McManus) - */ -class ImmutableList<E> extends AbstractList<E> { - private static final ImmutableList<?> EMPTY = new ImmutableList<>(new Object[0]); - - private final E[] elements; - - private ImmutableList(E[] elements) { - this.elements = elements; - } - - @Override - public Iterator<E> iterator() { - return Arrays.asList(elements).iterator(); - } - - @Override - public E get(int index) { - if (index < 0 || index >= elements.length) { - throw new IndexOutOfBoundsException(String.valueOf(index)); - } - return elements[index]; - } - - @Override - public int size() { - return elements.length; - } - - static <E> ImmutableList<E> of() { - @SuppressWarnings("unchecked") - ImmutableList<E> empty = (ImmutableList<E>) EMPTY; - return empty; - } - - @SafeVarargs - static <E> ImmutableList<E> of(E... elements) { - return new ImmutableList<>(elements.clone()); - } - - static <E> ImmutableList<E> copyOf(List<E> list) { - @SuppressWarnings("unchecked") - E[] elements = (E[]) new Object[list.size()]; - list.toArray(elements); - return new ImmutableList<>(elements); - } - - static <E> Builder<E> builder() { - return new Builder<E>(); - } - - static class Builder<E> { - private final List<E> list = new ArrayList<>(); - - void add(E element) { - list.add(element); - } - - ImmutableList<E> build() { - if (list.isEmpty()) { - return ImmutableList.of(); - } - @SuppressWarnings("unchecked") - E[] elements = (E[]) new Object[list.size()]; - list.toArray(elements); - return new ImmutableList<>(elements); - } - } -} |