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package com.fasterxml.jackson.databind.deser.std;
import java.io.IOException;
import java.math.BigDecimal;
import java.math.BigInteger;
import java.util.HashSet;
import com.fasterxml.jackson.core.*;
import com.fasterxml.jackson.core.io.NumberInput;
import com.fasterxml.jackson.databind.*;
import com.fasterxml.jackson.databind.annotation.JacksonStdImpl;
import com.fasterxml.jackson.databind.jsontype.TypeDeserializer;
import com.fasterxml.jackson.databind.util.AccessPattern;
/**
* Container class for deserializers that handle core JDK primitive
* (and matching wrapper) types, as well as standard "big" numeric types.
* Note that this includes types such as {@link java.lang.Boolean}
* and {@link java.lang.Character} which are not strictly numeric,
* but are part of primitive/wrapper types.
*/
public class NumberDeserializers
{
private final static HashSet _classNames = new HashSet();
static {
// note: can skip primitive types; other ways to check them:
Class[] numberTypes = new Class[] {
Boolean.class,
Byte.class,
Short.class,
Character.class,
Integer.class,
Long.class,
Float.class,
Double.class,
// and more generic ones
Number.class, BigDecimal.class, BigInteger.class
};
for (Class cls : numberTypes) {
_classNames.add(cls.getName());
}
}
public static JsonDeserializer find(Class rawType, String clsName) {
if (rawType.isPrimitive()) {
if (rawType == Integer.TYPE) {
return IntegerDeserializer.primitiveInstance;
}
if (rawType == Boolean.TYPE) {
return BooleanDeserializer.primitiveInstance;
}
if (rawType == Long.TYPE) {
return LongDeserializer.primitiveInstance;
}
if (rawType == Double.TYPE) {
return DoubleDeserializer.primitiveInstance;
}
if (rawType == Character.TYPE) {
return CharacterDeserializer.primitiveInstance;
}
if (rawType == Byte.TYPE) {
return ByteDeserializer.primitiveInstance;
}
if (rawType == Short.TYPE) {
return ShortDeserializer.primitiveInstance;
}
if (rawType == Float.TYPE) {
return FloatDeserializer.primitiveInstance;
}
} else if (_classNames.contains(clsName)) {
// Start with most common types; int, boolean, long, double
if (rawType == Integer.class) {
return IntegerDeserializer.wrapperInstance;
}
if (rawType == Boolean.class) {
return BooleanDeserializer.wrapperInstance;
}
if (rawType == Long.class) {
return LongDeserializer.wrapperInstance;
}
if (rawType == Double.class) {
return DoubleDeserializer.wrapperInstance;
}
if (rawType == Character.class) {
return CharacterDeserializer.wrapperInstance;
}
if (rawType == Byte.class) {
return ByteDeserializer.wrapperInstance;
}
if (rawType == Short.class) {
return ShortDeserializer.wrapperInstance;
}
if (rawType == Float.class) {
return FloatDeserializer.wrapperInstance;
}
if (rawType == Number.class) {
return NumberDeserializer.instance;
}
if (rawType == BigDecimal.class) {
return BigDecimalDeserializer.instance;
}
if (rawType == BigInteger.class) {
return BigIntegerDeserializer.instance;
}
} else {
return null;
}
// should never occur
throw new IllegalArgumentException("Internal error: can't find deserializer for "+rawType.getName());
}
/*
/**********************************************************
/* Then one intermediate base class for things that have
/* both primitive and wrapper types
/**********************************************************
*/
protected abstract static class PrimitiveOrWrapperDeserializer
extends StdScalarDeserializer
{
private static final long serialVersionUID = 1L;
protected final T _nullValue;
// @since 2.9
protected final T _emptyValue;
protected final boolean _primitive;
protected PrimitiveOrWrapperDeserializer(Class vc, T nvl, T empty) {
super(vc);
_nullValue = nvl;
_emptyValue = empty;
_primitive = vc.isPrimitive();
}
@Override
public AccessPattern getNullAccessPattern() {
// 02-Feb-2017, tatu: For primitives we must dynamically check (and possibly throw
// exception); for wrappers not.
if (_primitive) {
return AccessPattern.DYNAMIC;
}
if (_nullValue == null) {
return AccessPattern.ALWAYS_NULL;
}
return AccessPattern.CONSTANT;
}
@Override
public final T getNullValue(DeserializationContext ctxt) throws JsonMappingException {
// 01-Mar-2017, tatu: Alas, not all paths lead to `_coerceNull()`, as `SettableBeanProperty`
// short-circuits `null` handling. Hence need this check as well.
if (_primitive && ctxt.isEnabled(DeserializationFeature.FAIL_ON_NULL_FOR_PRIMITIVES)) {
ctxt.reportInputMismatch(this,
"Cannot map `null` into type %s (set DeserializationConfig.DeserializationFeature.FAIL_ON_NULL_FOR_PRIMITIVES to 'false' to allow)",
handledType().toString());
}
return _nullValue;
}
@Override
public Object getEmptyValue(DeserializationContext ctxt) throws JsonMappingException {
return _emptyValue;
}
}
/*
/**********************************************************
/* Then primitive/wrapper types
/**********************************************************
*/
@JacksonStdImpl
public final static class BooleanDeserializer
extends PrimitiveOrWrapperDeserializer
{
private static final long serialVersionUID = 1L;
final static BooleanDeserializer primitiveInstance = new BooleanDeserializer(Boolean.TYPE, Boolean.FALSE);
final static BooleanDeserializer wrapperInstance = new BooleanDeserializer(Boolean.class, null);
public BooleanDeserializer(Class cls, Boolean nvl)
{
super(cls, nvl, Boolean.FALSE);
}
@Override
public Boolean deserialize(JsonParser p, DeserializationContext ctxt) throws IOException
{
JsonToken t = p.getCurrentToken();
if (t == JsonToken.VALUE_TRUE) {
return Boolean.TRUE;
}
if (t == JsonToken.VALUE_FALSE) {
return Boolean.FALSE;
}
return _parseBoolean(p, ctxt);
}
// Since we can never have type info ("natural type"; String, Boolean, Integer, Double):
// (is it an error to even call this version?)
@Override
public Boolean deserializeWithType(JsonParser p, DeserializationContext ctxt,
TypeDeserializer typeDeserializer)
throws IOException
{
JsonToken t = p.getCurrentToken();
if (t == JsonToken.VALUE_TRUE) {
return Boolean.TRUE;
}
if (t == JsonToken.VALUE_FALSE) {
return Boolean.FALSE;
}
return _parseBoolean(p, ctxt);
}
protected final Boolean _parseBoolean(JsonParser p, DeserializationContext ctxt)
throws IOException
{
JsonToken t = p.getCurrentToken();
if (t == JsonToken.VALUE_NULL) {
return (Boolean) _coerceNullToken(ctxt, _primitive);
}
if (t == JsonToken.START_ARRAY) { // unwrapping?
return _deserializeFromArray(p, ctxt);
}
// should accept ints too, (0 == false, otherwise true)
if (t == JsonToken.VALUE_NUMBER_INT) {
return Boolean.valueOf(_parseBooleanFromInt(p, ctxt));
}
// And finally, let's allow Strings to be converted too
if (t == JsonToken.VALUE_STRING) {
String text = p.getText().trim();
// [databind#422]: Allow aliases
if ("true".equals(text) || "True".equals(text)) {
_verifyStringForScalarCoercion(ctxt, text);
return Boolean.TRUE;
}
if ("false".equals(text) || "False".equals(text)) {
_verifyStringForScalarCoercion(ctxt, text);
return Boolean.FALSE;
}
if (text.length() == 0) {
return (Boolean) _coerceEmptyString(ctxt, _primitive);
}
if (_hasTextualNull(text)) {
return (Boolean) _coerceTextualNull(ctxt, _primitive);
}
return (Boolean) ctxt.handleWeirdStringValue(_valueClass, text,
"only \"true\" or \"false\" recognized");
}
// usually caller should have handled but:
if (t == JsonToken.VALUE_TRUE) {
return Boolean.TRUE;
}
if (t == JsonToken.VALUE_FALSE) {
return Boolean.FALSE;
}
// Otherwise, no can do:
return (Boolean) ctxt.handleUnexpectedToken(_valueClass, p);
}
}
@JacksonStdImpl
public static class ByteDeserializer
extends PrimitiveOrWrapperDeserializer
{
private static final long serialVersionUID = 1L;
final static ByteDeserializer primitiveInstance = new ByteDeserializer(Byte.TYPE, (byte) 0);
final static ByteDeserializer wrapperInstance = new ByteDeserializer(Byte.class, null);
public ByteDeserializer(Class cls, Byte nvl)
{
super(cls, nvl, (byte) 0);
}
@Override
public Byte deserialize(JsonParser p, DeserializationContext ctxt) throws IOException
{
if (p.hasToken(JsonToken.VALUE_NUMBER_INT)) {
return p.getByteValue();
}
return _parseByte(p, ctxt);
}
protected Byte _parseByte(JsonParser p, DeserializationContext ctxt) throws IOException
{
JsonToken t = p.getCurrentToken();
if (t == JsonToken.VALUE_STRING) { // let's do implicit re-parse
String text = p.getText().trim();
if (_hasTextualNull(text)) {
return (Byte) _coerceTextualNull(ctxt, _primitive);
}
int len = text.length();
if (len == 0) {
return (Byte) _coerceEmptyString(ctxt, _primitive);
}
_verifyStringForScalarCoercion(ctxt, text);
int value;
try {
value = NumberInput.parseInt(text);
} catch (IllegalArgumentException iae) {
return (Byte) ctxt.handleWeirdStringValue(_valueClass, text,
"not a valid Byte value");
}
// So far so good: but does it fit?
// as per [JACKSON-804], allow range up to 255, inclusive
if (_byteOverflow(value)) {
return (Byte) ctxt.handleWeirdStringValue(_valueClass, text,
"overflow, value cannot be represented as 8-bit value");
// fall-through for deferred fails
}
return Byte.valueOf((byte) value);
}
if (t == JsonToken.VALUE_NUMBER_FLOAT) {
if (!ctxt.isEnabled(DeserializationFeature.ACCEPT_FLOAT_AS_INT)) {
_failDoubleToIntCoercion(p, ctxt, "Byte");
}
return p.getByteValue();
}
if (t == JsonToken.VALUE_NULL) {
return (Byte) _coerceNullToken(ctxt, _primitive);
}
// [databind#381]
if (t == JsonToken.START_ARRAY) {
return _deserializeFromArray(p, ctxt);
}
if (t == JsonToken.VALUE_NUMBER_INT) { // shouldn't usually be called with it but
return p.getByteValue();
}
return (Byte) ctxt.handleUnexpectedToken(_valueClass, p);
}
}
@JacksonStdImpl
public static class ShortDeserializer
extends PrimitiveOrWrapperDeserializer
{
private static final long serialVersionUID = 1L;
final static ShortDeserializer primitiveInstance = new ShortDeserializer(Short.TYPE, Short.valueOf((short)0));
final static ShortDeserializer wrapperInstance = new ShortDeserializer(Short.class, null);
public ShortDeserializer(Class cls, Short nvl)
{
super(cls, nvl, (short)0);
}
@Override
public Short deserialize(JsonParser p, DeserializationContext ctxt)
throws IOException
{
return _parseShort(p, ctxt);
}
protected Short _parseShort(JsonParser p, DeserializationContext ctxt) throws IOException
{
JsonToken t = p.getCurrentToken();
if (t == JsonToken.VALUE_NUMBER_INT) {
return p.getShortValue();
}
if (t == JsonToken.VALUE_STRING) { // let's do implicit re-parse
String text = p.getText().trim();
int len = text.length();
if (len == 0) {
return (Short) _coerceEmptyString(ctxt, _primitive);
}
if (_hasTextualNull(text)) {
return (Short) _coerceTextualNull(ctxt, _primitive);
}
_verifyStringForScalarCoercion(ctxt, text);
int value;
try {
value = NumberInput.parseInt(text);
} catch (IllegalArgumentException iae) {
return (Short) ctxt.handleWeirdStringValue(_valueClass, text,
"not a valid Short value");
}
// So far so good: but does it fit?
if (_shortOverflow(value)) {
return (Short) ctxt.handleWeirdStringValue(_valueClass, text,
"overflow, value cannot be represented as 16-bit value");
}
return Short.valueOf((short) value);
}
if (t == JsonToken.VALUE_NUMBER_FLOAT) {
if (!ctxt.isEnabled(DeserializationFeature.ACCEPT_FLOAT_AS_INT)) {
_failDoubleToIntCoercion(p, ctxt, "Short");
}
return p.getShortValue();
}
if (t == JsonToken.VALUE_NULL) {
return (Short) _coerceNullToken(ctxt, _primitive);
}
if (t == JsonToken.START_ARRAY) {
return _deserializeFromArray(p, ctxt);
}
return (Short) ctxt.handleUnexpectedToken(_valueClass, p);
}
}
@JacksonStdImpl
public static class CharacterDeserializer
extends PrimitiveOrWrapperDeserializer
{
private static final long serialVersionUID = 1L;
final static CharacterDeserializer primitiveInstance = new CharacterDeserializer(Character.TYPE, '\0');
final static CharacterDeserializer wrapperInstance = new CharacterDeserializer(Character.class, null);
public CharacterDeserializer(Class cls, Character nvl)
{
super(cls, nvl, '\0');
}
@Override
public Character deserialize(JsonParser p, DeserializationContext ctxt)
throws IOException
{
switch (p.getCurrentTokenId()) {
case JsonTokenId.ID_NUMBER_INT: // ok iff ascii value
_verifyNumberForScalarCoercion(ctxt, p);
int value = p.getIntValue();
if (value >= 0 && value <= 0xFFFF) {
return Character.valueOf((char) value);
}
break;
case JsonTokenId.ID_STRING: // this is the usual type
// But does it have to be exactly one char?
String text = p.getText();
if (text.length() == 1) {
return Character.valueOf(text.charAt(0));
}
// actually, empty should become null?
if (text.length() == 0) {
return (Character) _coerceEmptyString(ctxt, _primitive);
}
break;
case JsonTokenId.ID_NULL:
return (Character) _coerceNullToken(ctxt, _primitive);
case JsonTokenId.ID_START_ARRAY:
return _deserializeFromArray(p, ctxt);
default:
}
return (Character) ctxt.handleUnexpectedToken(_valueClass, p);
}
}
@JacksonStdImpl
public final static class IntegerDeserializer
extends PrimitiveOrWrapperDeserializer
{
private static final long serialVersionUID = 1L;
final static IntegerDeserializer primitiveInstance = new IntegerDeserializer(Integer.TYPE, 0);
final static IntegerDeserializer wrapperInstance = new IntegerDeserializer(Integer.class, null);
public IntegerDeserializer(Class cls, Integer nvl) {
super(cls, nvl, 0);
}
// since 2.6, slightly faster lookups for this very common type
@Override
public boolean isCachable() { return true; }
@Override
public Integer deserialize(JsonParser p, DeserializationContext ctxt) throws IOException {
if (p.hasToken(JsonToken.VALUE_NUMBER_INT)) {
return p.getIntValue();
}
return _parseInteger(p, ctxt);
}
// Since we can never have type info ("natural type"; String, Boolean, Integer, Double):
// (is it an error to even call this version?)
@Override
public Integer deserializeWithType(JsonParser p, DeserializationContext ctxt,
TypeDeserializer typeDeserializer) throws IOException
{
if (p.hasToken(JsonToken.VALUE_NUMBER_INT)) {
return p.getIntValue();
}
return _parseInteger(p, ctxt);
}
protected final Integer _parseInteger(JsonParser p, DeserializationContext ctxt) throws IOException
{
switch (p.getCurrentTokenId()) {
// NOTE: caller assumed to usually check VALUE_NUMBER_INT in fast path
case JsonTokenId.ID_NUMBER_INT:
return Integer.valueOf(p.getIntValue());
case JsonTokenId.ID_NUMBER_FLOAT: // coercing may work too
if (!ctxt.isEnabled(DeserializationFeature.ACCEPT_FLOAT_AS_INT)) {
_failDoubleToIntCoercion(p, ctxt, "Integer");
}
return Integer.valueOf(p.getValueAsInt());
case JsonTokenId.ID_STRING: // let's do implicit re-parse
String text = p.getText().trim();
int len = text.length();
if (len == 0) {
return (Integer) _coerceEmptyString(ctxt, _primitive);
}
if (_hasTextualNull(text)) {
return (Integer) _coerceTextualNull(ctxt, _primitive);
}
_verifyStringForScalarCoercion(ctxt, text);
try {
if (len > 9) {
long l = Long.parseLong(text);
if (_intOverflow(l)) {
return (Integer) ctxt.handleWeirdStringValue(_valueClass, text, String.format(
"Overflow: numeric value (%s) out of range of Integer (%d - %d)",
text, Integer.MIN_VALUE, Integer.MAX_VALUE));
}
return Integer.valueOf((int) l);
}
return Integer.valueOf(NumberInput.parseInt(text));
} catch (IllegalArgumentException iae) {
return (Integer) ctxt.handleWeirdStringValue(_valueClass, text,
"not a valid Integer value");
}
case JsonTokenId.ID_NULL:
return (Integer) _coerceNullToken(ctxt, _primitive);
case JsonTokenId.ID_START_ARRAY:
return _deserializeFromArray(p, ctxt);
}
// Otherwise, no can do:
return (Integer) ctxt.handleUnexpectedToken(_valueClass, p);
}
}
@JacksonStdImpl
public final static class LongDeserializer
extends PrimitiveOrWrapperDeserializer
{
private static final long serialVersionUID = 1L;
final static LongDeserializer primitiveInstance = new LongDeserializer(Long.TYPE, 0L);
final static LongDeserializer wrapperInstance = new LongDeserializer(Long.class, null);
public LongDeserializer(Class cls, Long nvl) {
super(cls, nvl, 0L);
}
// since 2.6, slightly faster lookups for this very common type
@Override
public boolean isCachable() { return true; }
@Override
public Long deserialize(JsonParser p, DeserializationContext ctxt) throws IOException {
if (p.hasToken(JsonToken.VALUE_NUMBER_INT)) {
return p.getLongValue();
}
return _parseLong(p, ctxt);
}
protected final Long _parseLong(JsonParser p, DeserializationContext ctxt) throws IOException
{
switch (p.getCurrentTokenId()) {
// NOTE: caller assumed to usually check VALUE_NUMBER_INT in fast path
case JsonTokenId.ID_NUMBER_INT:
return p.getLongValue();
case JsonTokenId.ID_NUMBER_FLOAT:
if (!ctxt.isEnabled(DeserializationFeature.ACCEPT_FLOAT_AS_INT)) {
_failDoubleToIntCoercion(p, ctxt, "Long");
}
return p.getValueAsLong();
case JsonTokenId.ID_STRING:
String text = p.getText().trim();
if (text.length() == 0) {
return (Long) _coerceEmptyString(ctxt, _primitive);
}
if (_hasTextualNull(text)) {
return (Long) _coerceTextualNull(ctxt, _primitive);
}
_verifyStringForScalarCoercion(ctxt, text);
// let's allow Strings to be converted too
try {
return Long.valueOf(NumberInput.parseLong(text));
} catch (IllegalArgumentException iae) { }
return (Long) ctxt.handleWeirdStringValue(_valueClass, text,
"not a valid Long value");
// fall-through
case JsonTokenId.ID_NULL:
return (Long) _coerceNullToken(ctxt, _primitive);
case JsonTokenId.ID_START_ARRAY:
return _deserializeFromArray(p, ctxt);
}
// Otherwise, no can do:
return (Long) ctxt.handleUnexpectedToken(_valueClass, p);
}
}
@JacksonStdImpl
public static class FloatDeserializer
extends PrimitiveOrWrapperDeserializer
{
private static final long serialVersionUID = 1L;
final static FloatDeserializer primitiveInstance = new FloatDeserializer(Float.TYPE, 0.f);
final static FloatDeserializer wrapperInstance = new FloatDeserializer(Float.class, null);
public FloatDeserializer(Class cls, Float nvl) {
super(cls, nvl, 0.f);
}
@Override
public Float deserialize(JsonParser p, DeserializationContext ctxt) throws IOException
{
return _parseFloat(p, ctxt);
}
protected final Float _parseFloat(JsonParser p, DeserializationContext ctxt)
throws IOException
{
// We accept couple of different types; obvious ones first:
JsonToken t = p.getCurrentToken();
if (t == JsonToken.VALUE_NUMBER_FLOAT || t == JsonToken.VALUE_NUMBER_INT) { // coercing should work too
return p.getFloatValue();
}
// And finally, let's allow Strings to be converted too
if (t == JsonToken.VALUE_STRING) {
String text = p.getText().trim();
if ((text.length() == 0)) {
return (Float) _coerceEmptyString(ctxt, _primitive);
}
if (_hasTextualNull(text)) {
return (Float) _coerceTextualNull(ctxt, _primitive);
}
switch (text.charAt(0)) {
case 'I':
if (_isPosInf(text)) {
return Float.POSITIVE_INFINITY;
}
break;
case 'N':
if (_isNaN(text)) {
return Float.NaN;
}
break;
case '-':
if (_isNegInf(text)) {
return Float.NEGATIVE_INFINITY;
}
break;
}
_verifyStringForScalarCoercion(ctxt, text);
try {
return Float.parseFloat(text);
} catch (IllegalArgumentException iae) { }
return (Float) ctxt.handleWeirdStringValue(_valueClass, text,
"not a valid Float value");
}
if (t == JsonToken.VALUE_NULL) {
return (Float) _coerceNullToken(ctxt, _primitive);
}
if (t == JsonToken.START_ARRAY) {
return _deserializeFromArray(p, ctxt);
}
// Otherwise, no can do:
return (Float) ctxt.handleUnexpectedToken(_valueClass, p);
}
}
@JacksonStdImpl
public static class DoubleDeserializer
extends PrimitiveOrWrapperDeserializer
{
private static final long serialVersionUID = 1L;
final static DoubleDeserializer primitiveInstance = new DoubleDeserializer(Double.TYPE, 0.d);
final static DoubleDeserializer wrapperInstance = new DoubleDeserializer(Double.class, null);
public DoubleDeserializer(Class cls, Double nvl) {
super(cls, nvl, 0.d);
}
@Override
public Double deserialize(JsonParser p, DeserializationContext ctxt) throws IOException {
return _parseDouble(p, ctxt);
}
// Since we can never have type info ("natural type"; String, Boolean, Integer, Double):
// (is it an error to even call this version?)
@Override
public Double deserializeWithType(JsonParser p, DeserializationContext ctxt,
TypeDeserializer typeDeserializer) throws IOException
{
return _parseDouble(p, ctxt);
}
protected final Double _parseDouble(JsonParser p, DeserializationContext ctxt) throws IOException
{
JsonToken t = p.getCurrentToken();
if (t == JsonToken.VALUE_NUMBER_INT || t == JsonToken.VALUE_NUMBER_FLOAT) { // coercing should work too
return p.getDoubleValue();
}
if (t == JsonToken.VALUE_STRING) {
String text = p.getText().trim();
if ((text.length() == 0)) {
return (Double) _coerceEmptyString(ctxt, _primitive);
}
if (_hasTextualNull(text)) {
return (Double) _coerceTextualNull(ctxt, _primitive);
}
switch (text.charAt(0)) {
case 'I':
if (_isPosInf(text)) {
return Double.POSITIVE_INFINITY;
}
break;
case 'N':
if (_isNaN(text)) {
return Double.NaN;
}
break;
case '-':
if (_isNegInf(text)) {
return Double.NEGATIVE_INFINITY;
}
break;
}
_verifyStringForScalarCoercion(ctxt, text);
try {
return parseDouble(text);
} catch (IllegalArgumentException iae) { }
return (Double) ctxt.handleWeirdStringValue(_valueClass, text,
"not a valid Double value");
}
if (t == JsonToken.VALUE_NULL) {
return (Double) _coerceNullToken(ctxt, _primitive);
}
if (t == JsonToken.START_ARRAY) {
return _deserializeFromArray(p, ctxt);
}
// Otherwise, no can do:
return (Double) ctxt.handleUnexpectedToken(_valueClass, p);
}
}
/**
* For type Number.class, we can just rely on type
* mappings that plain {@link JsonParser#getNumberValue} returns.
*
* There is one additional complication: some numeric
* types (specifically, int/Integer and double/Double) are "non-typed";
* meaning that they will NEVER be output with type information.
* But other numeric types may need such type information.
* This is why {@link #deserializeWithType} must be overridden.
*/
@SuppressWarnings("serial")
@JacksonStdImpl
public static class NumberDeserializer
extends StdScalarDeserializer
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