/*

 *  Copyright 2009-present, Stephen Colebourne

 *

 *  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 org.joda.money.format;

import java.io.IOException;

import java.io.Serializable;

import org.joda.money.BigMoney;

/**

 * Prints and parses a literal.

 * <p>

 * This class is immutable and thread-safe.

 */

final class LiteralPrinterParser implements MoneyPrinter, MoneyParser, Serializable {

    /** Serialization version. */

    private static final long serialVersionUID = 1L;

    /** Literal. */

    private final String literal;

    /**

     * Constructor.

     * @param literal  the literal text, not null

     */

    LiteralPrinterParser(String literal) {

        this.literal = literal;

    }

    //-----------------------------------------------------------------------

    @Override

    public void print(MoneyPrintContext context, Appendable appendable, BigMoney money) throws IOException {

        appendable.append(literal);

    }

    @Override

    public void parse(MoneyParseContext context) {

        var endPos = context.getIndex() + literal.length();

        if (endPos <= context.getTextLength() &&

                context.getTextSubstring(context.getIndex(), endPos).equals(literal)) {

            context.setIndex(endPos);

        } else {

            context.setError();

        }

    }

    @Override

    public String toString() {

        return "'" + literal + "'";

    }

}