github.com/keysonZZZ/kmg@v0.0.0-20151121023212-05317bfd7d39/kmgRpc/kmgRpcJava/java/src/com/google/gson/internal/LazilyParsedNumber.java (about)

     1  /*
     2   * Copyright (C) 2011 Google Inc.
     3   *
     4   * Licensed under the Apache License, Version 2.0 (the "License");
     5   * you may not use this file except in compliance with the License.
     6   * You may obtain a copy of the License at
     7   *
     8   * http://www.apache.org/licenses/LICENSE-2.0
     9   *
    10   * Unless required by applicable law or agreed to in writing, software
    11   * distributed under the License is distributed on an "AS IS" BASIS,
    12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13   * See the License for the specific language governing permissions and
    14   * limitations under the License.
    15   */
    16  package com.google.gson.internal;
    17  
    18  import java.io.ObjectStreamException;
    19  import java.math.BigDecimal;
    20  
    21  /**
    22   * This class holds a number value that is lazily converted to a specific number type
    23   *
    24   * @author Inderjeet Singh
    25   */
    26  public final class LazilyParsedNumber extends Number {
    27    private final String value;
    28  
    29    public LazilyParsedNumber(String value) {
    30      this.value = value;
    31    }
    32  
    33    @Override
    34    public int intValue() {
    35      try {
    36        return Integer.parseInt(value);
    37      } catch (NumberFormatException e) {
    38        try {
    39          return (int) Long.parseLong(value);
    40        } catch (NumberFormatException nfe) {
    41          return new BigDecimal(value).intValue();
    42        }
    43      }
    44    }
    45  
    46    @Override
    47    public long longValue() {
    48      try {
    49        return Long.parseLong(value);
    50      } catch (NumberFormatException e) {
    51        return new BigDecimal(value).longValue();
    52      }
    53    }
    54  
    55    @Override
    56    public float floatValue() {
    57      return Float.parseFloat(value);
    58    }
    59  
    60    @Override
    61    public double doubleValue() {
    62      return Double.parseDouble(value);
    63    }
    64  
    65    @Override
    66    public String toString() {
    67      return value;
    68    }
    69  
    70    /**
    71     * If somebody is unlucky enough to have to serialize one of these, serialize
    72     * it as a BigDecimal so that they won't need Gson on the other side to
    73     * deserialize it.
    74     */
    75    private Object writeReplace() throws ObjectStreamException {
    76      return new BigDecimal(value);
    77    }
    78  }