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GS Collections is a collections framework for Java. It has JDK-compatible List, Set and Map implementations with a rich API and set of utility classes that work with any JDK compatible Collections, Arrays, Maps or Strings. The iteration protocol was inspired by the Smalltalk collection framework.
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/*
 * Copyright 2014 Goldman Sachs.
 *
 * 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.gs.collections.impl.stack.immutable.primitive;

import java.io.IOException;
import java.io.Serializable;

import com.gs.collections.api.ByteIterable;
import com.gs.collections.api.LazyByteIterable;
import com.gs.collections.api.bag.primitive.MutableByteBag;
import com.gs.collections.api.block.function.primitive.ByteToObjectFunction;
import com.gs.collections.api.block.function.primitive.ObjectByteToObjectFunction;
import com.gs.collections.api.block.predicate.primitive.BytePredicate;
import com.gs.collections.api.block.procedure.primitive.ByteProcedure;
import com.gs.collections.api.iterator.ByteIterator;
import com.gs.collections.api.list.primitive.ByteList;
import com.gs.collections.api.list.primitive.MutableByteList;
import com.gs.collections.api.set.primitive.MutableByteSet;
import com.gs.collections.api.stack.ImmutableStack;
import com.gs.collections.api.stack.primitive.ByteStack;
import com.gs.collections.api.stack.primitive.ImmutableByteStack;
import com.gs.collections.impl.bag.mutable.primitive.ByteHashBag;
import com.gs.collections.impl.factory.Stacks;
import com.gs.collections.impl.factory.primitive.ByteStacks;
import com.gs.collections.impl.lazy.primitive.LazyByteIterableAdapter;
import com.gs.collections.impl.list.mutable.primitive.ByteArrayList;
import com.gs.collections.impl.set.mutable.primitive.ByteHashSet;
import com.gs.collections.impl.stack.mutable.primitive.ByteArrayStack;
import net.jcip.annotations.Immutable;

/**
 * ImmutableByteSingletonStack is an optimization for {@link ImmutableByteStack} of size 1.
 * This file was automatically generated from template file immutablePrimitiveSingletonStack.stg.
 */
@Immutable
final class ImmutableByteSingletonStack implements ImmutableByteStack, Serializable
{
    private static final long serialVersionUID = 1L;
    private final byte element1;

    ImmutableByteSingletonStack(byte element)
    {
        this.element1 = element;
    }

    public ByteIterator byteIterator()
    {
        return ByteArrayStack.newStackWith(this.element1).byteIterator();
    }

    public void forEach(ByteProcedure procedure)
    {
        procedure.value(this.element1);
    }

    public int count(BytePredicate predicate)
    {
        return predicate.accept(this.element1) ? 1 : 0;
    }

    public boolean anySatisfy(BytePredicate predicate)
    {
        return predicate.accept(this.element1);
    }

    public boolean allSatisfy(BytePredicate predicate)
    {
        return predicate.accept(this.element1);
    }

    public boolean noneSatisfy(BytePredicate predicate)
    {
        return !predicate.accept(this.element1);
    }

    public byte peek()
    {
        return this.element1;
    }

    public ByteList peek(int count)
    {
        this.checkNegativeCount(count);
        if (count == 0)
        {
            return new ByteArrayList(0);
        }
        if (count == 1)
        {
            return ByteArrayList.newListWith(this.element1);
        }
        throw new IllegalArgumentException("Count must be less than or equal to size: Count = " + count + " Size = 1");
    }

    public byte peekAt(int index)
    {
        this.checkNegativeCount(index);
        if (index == 0)
        {
            return this.element1;
        }
        throw new IllegalArgumentException("Index must be less than size: Index = " + index + " Size = 1");
    }

    public ImmutableByteStack select(BytePredicate predicate)
    {
        return predicate.accept(this.element1) ? ByteStacks.immutable.with(this.element1)
                : ByteStacks.immutable.with();
    }

    public ImmutableByteStack reject(BytePredicate predicate)
    {
        return predicate.accept(this.element1) ? ByteStacks.immutable.with()
                : ByteStacks.immutable.with(this.element1);
    }

    public byte detectIfNone(BytePredicate predicate, byte ifNone)
    {
        return predicate.accept(this.element1) ? this.element1 : ifNone;
    }

    public  ImmutableStack collect(ByteToObjectFunction function)
    {
        return Stacks.immutable.with(function.valueOf(this.element1));
    }

    public long sum()
    {
        return this.element1;
    }

    public byte max()
    {
        return this.element1;
    }

    public byte maxIfEmpty(byte defaultValue)
    {
        return this.element1;
    }

    public byte min()
    {
        return this.element1;
    }

    public byte minIfEmpty(byte defaultValue)
    {
        return this.element1;
    }

    public double average()
    {
        return this.element1;
    }

    public double median()
    {
        return this.element1;
    }

    public byte[] toSortedArray()
    {
        return new byte[]{this.element1};
    }

    public MutableByteList toSortedList()
    {
        return ByteArrayList.newListWith(this.element1);
    }

    public byte[] toArray()
    {
        return new byte[]{this.element1};
    }

    public boolean contains(byte value)
    {
        return this.element1 == value;
    }

    public boolean containsAll(byte... source)
    {
        for (byte value : source)
        {
            if (this.element1 != value)
            {
                return false;
            }
        }
        return true;
    }

    public boolean containsAll(ByteIterable source)
    {
        for (ByteIterator iterator = source.byteIterator(); iterator.hasNext(); )
        {
            if (this.element1 != iterator.next())
            {
                return false;
            }
        }
        return true;
    }

    public MutableByteList toList()
    {
        return ByteArrayList.newListWith(this.element1);
    }

    public MutableByteSet toSet()
    {
        return ByteHashSet.newSetWith(this.element1);
    }

    public MutableByteBag toBag()
    {
        return ByteHashBag.newBagWith(this.element1);
    }

    public LazyByteIterable asLazy()
    {
        return new LazyByteIterableAdapter(this);
    }

    public ImmutableByteStack toImmutable()
    {
        return this;
    }

    public ImmutableByteStack push(byte element)
    {
        return ByteStacks.immutable.with(this.element1, element);
    }

    public ImmutableByteStack pop()
    {
        return ByteStacks.immutable.with();
    }

    public ImmutableByteStack pop(int count)
    {
        this.checkNegativeCount(count);
        if (count == 0)
        {
            return this;
        }
        if (count == 1)
        {
            return ByteStacks.immutable.with();
        }
        throw new IllegalArgumentException("Count must be less than size: Count = " + count + " Size = 1");
    }

    private void checkNegativeCount(int count)
    {
        if (count < 0)
        {
            throw new IllegalArgumentException("Count must be positive but was " + count);
        }
    }

    public int size()
    {
        return 1;
    }

    public boolean isEmpty()
    {
        return false;
    }

    public boolean notEmpty()
    {
        return true;
    }

    public  T injectInto(T injectedValue, ObjectByteToObjectFunction function)
    {
        return function.valueOf(injectedValue, this.element1);
    }

    @Override
    public boolean equals(Object otherStack)
    {
        if (otherStack == this)
        {
            return true;
        }
        if (!(otherStack instanceof ByteStack))
        {
            return false;
        }
        ByteStack stack = (ByteStack) otherStack;
        if (stack.size() != 1)
        {
            return false;
        }
        return this.element1 == stack.peek();
    }

    @Override
    public int hashCode()
    {
        return 31 + (int) this.element1;
    }

    @Override
    public String toString()
    {
        return "[" + this.element1 + ']';
    }

    public String makeString()
    {
        return this.makeString(", ");
    }

    public String makeString(String separator)
    {
        return this.makeString("", separator, "");
    }

    public String makeString(String start, String separator, String end)
    {
        Appendable stringBuilder = new StringBuilder();
        this.appendString(stringBuilder, start, separator, end);
        return stringBuilder.toString();
    }

    public void appendString(Appendable appendable)
    {
        this.appendString(appendable, ", ");
    }

    public void appendString(Appendable appendable, String separator)
    {
        this.appendString(appendable, "", separator, "");
    }

    public void appendString(Appendable appendable, String start, String separator, String end)
    {
        try
        {
            appendable.append(start);
            appendable.append(String.valueOf(this.element1));
            appendable.append(end);
        }
        catch (IOException e)
        {
            throw new RuntimeException(e);
        }
    }
}