Logback: the reliable, generic, fast and flexible logging framework.
Copyright (C) 1999-2015, QOS.ch. All rights reserved.
This program and the accompanying materials are dual-licensed under
either the terms of the Eclipse Public License v1.0 as published by
the Eclipse Foundation
  or (per the licensee's choosing)
under the terms of the GNU Lesser General Public License version 2.1
as published by the Free Software Foundation.
/**
 * Logback: the reliable, generic, fast and flexible logging framework.
 * Copyright (C) 1999-2015, QOS.ch. All rights reserved.
 *
 * This program and the accompanying materials are dual-licensed under
 * either the terms of the Eclipse Public License v1.0 as published by
 * the Eclipse Foundation
 *
 *   or (per the licensee's choosing)
 *
 * under the terms of the GNU Lesser General Public License version 2.1
 * as published by the Free Software Foundation.
 */
package ch.qos.logback.core.subst;

public class Token {

    static public final Token START_TOKEN = new Token(Type.START, null);
    static public final Token CURLY_LEFT_TOKEN = new Token(Type.CURLY_LEFT, null);
    static public final Token CURLY_RIGHT_TOKEN = new Token(Type.CURLY_RIGHT, null);
    static public final Token DEFAULT_SEP_TOKEN = new Token(Type.DEFAULT, null);

    public enum Type {
        LITERAL, START, CURLY_LEFT, CURLY_RIGHT, DEFAULT
    }

    Type type;
    String payload;

    public Token(Type type, String payload) {
        this.type = type;
        this.payload = payload;
    }

    @Override
    public boolean equals(Object o) {
        if (this == o)
            return true;
        if (o == null || getClass() != o.getClass())
            return false;

        Token token = (Token) o;

        if (type != token.type)
            return false;
        if (payload != null ? !payload.equals(token.payload) : token.payload != null)
            return false;

        return true;
    }

    @Override
    public int hashCode() {
        int result = type != null ? type.hashCode() : 0;
        result = 31 * result + (payload != null ? payload.hashCode() : 0);
        return result;
    }

    @Override
    public String toString() {
        String result = "Token{" + "type=" + type;
        if (payload != null)
            result += ", payload='" + payload + '\'';

        result += '}';
        return result;
    }
}