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 final 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 int intValue() { return (int) _value; } @Override public long longValue() { return (long) _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); } @Override public final void serialize(JsonGenerator jg, SerializerProvider provider) throws IOException, JsonProcessingException { jg.writeNumber(_value); } @Override public boolean equals(Object o) { if (o == this) return true; if (o == null) return false; if (o.getClass() != getClass()) { // final class, can do this return false; } // 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; } @Override public int hashCode() { // same as hashCode Double.class uses long l = Double.doubleToLongBits(_value); return ((int) l) ^ (int) (l >> 32); } }