/*
    * Licensed to the Apache Software Foundation (ASF) under one or more
    * contributor license agreements.  See the NOTICE file distributed with
    * this work for additional information regarding copyright ownership.
    * The ASF licenses this file to You 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.apache.shardingsphere.sql.parser.sql.common.value.literal.impl;
  
  import lombok.Getter;
  import org.apache.shardingsphere.sql.parser.sql.common.value.literal.LiteralValue;
  
  import java.math.BigDecimal;
  import java.math.BigInteger;
  
  /**
   * Number literal value.
   */
  @Getter
  public final class NumberLiteralValue implements LiteralValue<Number> {
      
      private final Number value;
      
      public NumberLiteralValue(final String value) {
          this.value = getNumber(value);
      }
      
      private Number getNumber(final String value) {
          try {
              return getBigInteger(value);
          } catch (final NumberFormatException ex) {
              // TODO make sure with double and float
              return new BigDecimal(value);
          }
      }
      
      private static Number getBigInteger(final String value) {
          BigInteger result = new BigInteger(value);
          if (result.compareTo(new BigInteger(String.valueOf(Integer.MIN_VALUE))) >= 0 && result.compareTo(new BigInteger(String.valueOf(Integer.MAX_VALUE))) <= 0) {
              return result.intValue();
          }
          if (result.compareTo(new BigInteger(String.valueOf(Long.MIN_VALUE))) >= 0 && result.compareTo(new BigInteger(String.valueOf(Long.MAX_VALUE))) <= 0) {
              return result.longValue();
          }
          return result;
      }
  }