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/*******************************************************************************
 * Copyright (c) 2015 Jeff Martin.
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Lesser General Public
 * License v3.0 which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/lgpl.html
 * <p>
 * Contributors:
 * Jeff Martin - initial API and implementation
 ******************************************************************************/
package cuchaz.enigma.mapping;

import java.io.Serializable;

import cuchaz.enigma.Util;

public class ArgumentEntry implements Entry, Serializable {

    private static final long serialVersionUID = 4472172468162696006L;

    private BehaviorEntry m_behaviorEntry;
    private int m_index;
    private String m_name;

    public ArgumentEntry(BehaviorEntry behaviorEntry, int index, String name) {
        if (behaviorEntry == null) {
            throw new IllegalArgumentException("Behavior cannot be null!");
        }
        if (index < 0) {
            throw new IllegalArgumentException("Index must be non-negative!");
        }
        if (name == null) {
            throw new IllegalArgumentException("Argument name cannot be null!");
        }

       m_behaviorEntry = behaviorEntry;
        m_index = index;
        m_name = name;
    }

    public ArgumentEntry(ArgumentEntry other) {
        m_behaviorEntry = (BehaviorEntry) m_behaviorEntry.cloneToNewClass(getClassEntry());
        m_index = other.m_index;
        m_name = other.m_name;
    }

    public ArgumentEntry(ArgumentEntry other, String newClassName) {
        m_behaviorEntry = (BehaviorEntry) other.m_behaviorEntry.cloneToNewClass(new ClassEntry(newClassName));
        m_index = other.m_index;
        m_name = other.m_name;
    }

    public BehaviorEntry getBehaviorEntry() {
        return m_behaviorEntry;
    }

    public int getIndex() {
        return m_index;
    }

    @Override
    public String getName() {
        return m_name;
    }

    @Override
    public ClassEntry getClassEntry() {
        return m_behaviorEntry.getClassEntry();
    }

    @Override
    public String getClassName() {
        return m_behaviorEntry.getClassName();
    }

    @Override
    public ArgumentEntry cloneToNewClass(ClassEntry classEntry) {
        return new ArgumentEntry(this, classEntry.getName());
    }

    public String getMethodName() {
        return m_behaviorEntry.getName();
    }

    public Signature getMethodSignature() {
        return m_behaviorEntry.getSignature();
    }

    @Override
    public int hashCode() {
        return Util.combineHashesOrdered(
                m_behaviorEntry,
                Integer.valueOf(m_index).hashCode(),
                m_name.hashCode()
        );
    }

    @Override
    public boolean equals(Object other) {
        return other instanceof ArgumentEntry && equals((ArgumentEntry) other);
    }

    public boolean equals(ArgumentEntry other) {
        return m_behaviorEntry.equals(other.m_behaviorEntry) && m_index == other.m_index && m_name.equals(other.m_name);
    }

    @Override
    public String toString() {
        return m_behaviorEntry.toString() + "(" + m_index + ":" + m_name + ")";
    }
}