/*******************************************************************************
 * 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 cuchaz.enigma.utils.Utils;

public class MethodEntry implements BehaviorEntry {

    private ClassEntry classEntry;
    private String name;
    private Signature signature;

    public MethodEntry(ClassEntry classEntry, String name, Signature signature) {
        if (classEntry == null) {
            throw new IllegalArgumentException("Class cannot be null!");
        }
        if (name == null) {
            throw new IllegalArgumentException("Method name cannot be null!");
        }
        if (signature == null) {
            throw new IllegalArgumentException("Method signature cannot be null!");
        }
        if (name.startsWith("<")) {
            throw new IllegalArgumentException("Don't use MethodEntry for a constructor!");
        }

        this.classEntry = classEntry;
        this.name = name;
        this.signature = signature;
    }

    public MethodEntry(MethodEntry other, String newClassName) {
        this.classEntry = new ClassEntry(newClassName);
        this.name = other.name;
        this.signature = other.signature;
    }

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

    @Override
    public String getName() {
        return this.name;
    }

    @Override
    public Signature getSignature() {
        return this.signature;
    }

    @Override
    public String getClassName() {
        return this.classEntry.getName();
    }

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

    @Override
    public int hashCode() {
        return Utils.combineHashesOrdered(this.classEntry, this.name, this.signature);
    }

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

    public boolean equals(MethodEntry other) {
        return this.classEntry.equals(other.classEntry) && this.name.equals(other.name) && this.signature.equals(other.signature);
    }

    @Override
    public String toString() {
        return this.classEntry.getName() + "." + this.name + this.signature;
    }
}