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'rapiddweller Common' is an open source Java library forked from Databene Commons by Volker Bergmann. It provides extensions to the Java core library by utility classes, abstract concepts and concrete implementations.

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/*
 * Copyright (C) 2004-2015 Volker Bergmann ([email protected]).
 * All rights reserved.
 *
 * 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 com.rapiddweller.common;

import java.text.ParsePosition;

/**
 * Parent for classes which parse {@link String}.
 * It resembles the 'parse' part of the {@link java.text.Format} class.
 * Created: 10.03.2011 15:36:54
 *
 * @param  the result type of the parser
 * @author Volker Bergmann
 * @since 0.5.8
 */
public abstract class Parser {

  /**
   * Parse e.
   *
   * @param text the text
   * @return the e
   */
  public E parse(String text) {
    ParsePosition pos = new ParsePosition(0);
    E result = parseObject(text, pos);
    if (pos.getIndex() < text.length()) {
      throw new ParseException("Illegal syntax", text, -1, pos.getIndex());
    }
    return result;
  }

  /**
   * Parse object e.
   *
   * @param text the text
   * @param pos  the pos
   * @return the e
   */
  public abstract E parseObject(String text, ParsePosition pos);

}