/*

  *  Copyright 2009-2013 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;

     }

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

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

         appendable.append(literal);

     }

     public void parse(MoneyParseContext context) {

         int 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 + "'";

     }

 }