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package com.fasterxml.jackson.databind.node;
import java.io.IOException;
import java.math.BigDecimal;
import java.math.BigInteger;
import com.fasterxml.jackson.core.*;
import com.fasterxml.jackson.core.io.NumberOutput;
import com.fasterxml.jackson.databind.SerializerProvider;
/**
* Numeric node that contains 64-bit ("double precision")
* floating point values simple 32-bit integer values.
*/
@SuppressWarnings("serial")
public class DoubleNode
extends NumericNode
{
protected final double _value;
/*
/**********************************************************
/* Construction
/**********************************************************
*/
public DoubleNode(double v) { _value = v; }
public static DoubleNode valueOf(double v) { return new DoubleNode(v); }
/*
/**********************************************************
/* BaseJsonNode extended API
/**********************************************************
*/
@Override public JsonToken asToken() { return JsonToken.VALUE_NUMBER_FLOAT; }
@Override
public JsonParser.NumberType numberType() { return JsonParser.NumberType.DOUBLE; }
/*
/**********************************************************
/* Overrridden JsonNode methods
/**********************************************************
*/
@Override
public boolean isFloatingPointNumber() { return true; }
@Override
public boolean isDouble() { return true; }
@Override public boolean canConvertToInt() {
return (_value >= Integer.MIN_VALUE && _value <= Integer.MAX_VALUE);
}
@Override public boolean canConvertToLong() {
return (_value >= Long.MIN_VALUE && _value <= Long.MAX_VALUE);
}
@Override
public Number numberValue() {
return Double.valueOf(_value);
}
@Override
public short shortValue() { return (short) _value; }
@Override
public int intValue() { return (int) _value; }
@Override
public long longValue() { return (long) _value; }
@Override
public float floatValue() { return (float) _value; }
@Override
public double doubleValue() { return _value; }
@Override
public BigDecimal decimalValue() { return BigDecimal.valueOf(_value); }
@Override
public BigInteger bigIntegerValue() {
return decimalValue().toBigInteger();
}
@Override
public String asText() {
return NumberOutput.toString(_value);
}
// @since 2.9
@Override
public boolean isNaN() {
return Double.isNaN(_value) || Double.isInfinite(_value);
}
@Override
public final void serialize(JsonGenerator g, SerializerProvider provider) throws IOException {
g.writeNumber(_value);
}
@Override
public boolean equals(Object o)
{
if (o == this) return true;
if (o == null) return false;
if (o instanceof DoubleNode) {
// We must account for NaNs: NaN does not equal NaN, therefore we have
// to use Double.compare().
final double otherValue = ((DoubleNode) o)._value;
return Double.compare(_value, otherValue) == 0;
}
return false;
}
@Override
public int hashCode()
{
// same as hashCode Double.class uses
long l = Double.doubleToLongBits(_value);
return ((int) l) ^ (int) (l >> 32);
}
}
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