106 lines
2.7 KiB
Java
106 lines
2.7 KiB
Java
/*
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* Copyright (C) 2011 Google Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.google.gson.internal;
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import java.io.IOException;
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import java.io.InvalidObjectException;
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import java.io.ObjectInputStream;
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import java.io.ObjectStreamException;
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import java.math.BigDecimal;
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/**
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* This class holds a number value that is lazily converted to a specific number type
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*
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* @author Inderjeet Singh
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*/
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@SuppressWarnings("serial") // ignore warning about missing serialVersionUID
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public final class LazilyParsedNumber extends Number {
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private final String value;
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/** @param value must not be null */
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public LazilyParsedNumber(String value) {
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this.value = value;
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}
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@Override
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public int intValue() {
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try {
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return Integer.parseInt(value);
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} catch (NumberFormatException e) {
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try {
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return (int) Long.parseLong(value);
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} catch (NumberFormatException nfe) {
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return new BigDecimal(value).intValue();
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}
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}
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}
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@Override
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public long longValue() {
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try {
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return Long.parseLong(value);
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} catch (NumberFormatException e) {
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return new BigDecimal(value).longValue();
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}
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}
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@Override
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public float floatValue() {
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return Float.parseFloat(value);
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}
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@Override
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public double doubleValue() {
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return Double.parseDouble(value);
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}
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@Override
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public String toString() {
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return value;
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}
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/**
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* If somebody is unlucky enough to have to serialize one of these, serialize
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* it as a BigDecimal so that they won't need Gson on the other side to
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* deserialize it.
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*/
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private Object writeReplace() throws ObjectStreamException {
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return new BigDecimal(value);
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}
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private void readObject(ObjectInputStream in) throws IOException {
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// Don't permit directly deserializing this class; writeReplace() should have written a replacement
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throw new InvalidObjectException("Deserialization is unsupported");
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}
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@Override
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public int hashCode() {
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return value.hashCode();
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}
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@Override
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public boolean equals(Object obj) {
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if (this == obj) {
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return true;
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}
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if (obj instanceof LazilyParsedNumber) {
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LazilyParsedNumber other = (LazilyParsedNumber) obj;
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return value.equals(other.value);
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}
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return false;
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}
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}
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