| 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. |
| */ |
| 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); |
| |
| } |
| } |