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package com.fasterxml.jackson.databind.cfg;
import com.fasterxml.jackson.core.util.JacksonFeature;
import com.fasterxml.jackson.core.util.VersionUtil;
/**
* Immutable value class that contains settings for multiple
* {@link DatatypeFeature} enumerations.
*
* @since 2.14
*/
public class DatatypeFeatures
implements java.io.Serializable
{
private static final long serialVersionUID = 1L;
protected final static int FEATURE_INDEX_ENUM = 0;
protected final static int FEATURE_INDEX_JSON_NODE = 1;
private final int _enabledFor1, _enabledFor2;
private final int _explicitFor1, _explicitFor2;
protected DatatypeFeatures(int enabledFor1, int explicitFor1,
int enabledFor2, int explicitFor2) {
_enabledFor1 = enabledFor1;
_explicitFor1 = explicitFor1;
_enabledFor2 = enabledFor2;
_explicitFor2 = explicitFor2;
}
public static DatatypeFeatures defaultFeatures() {
return DefaultHolder.getDefault();
}
private DatatypeFeatures _with(int enabledFor1, int explicitFor1,
int enabledFor2, int explicitFor2) {
if ((_enabledFor1 == enabledFor1) && (_explicitFor1 == explicitFor1)
&& (_enabledFor2 == enabledFor2) && (_explicitFor2 == explicitFor2)) {
return this;
}
return new DatatypeFeatures(enabledFor1, explicitFor1,
enabledFor2, explicitFor2);
}
/*
/**********************************************************************
/* Public Mutant Factory methods
/**********************************************************************
*/
/**
* Mutant factory method that returns an instance with given Feature
* explicitly enabled.
*
* @param f {@link DatatypeFeature} to explicitly enable in this set
*
* @return Existing instance if there is no change (feature was already explicitly enabled),
* or a new instance with feature explicitly enabled (if it was not).
*/
public DatatypeFeatures with(DatatypeFeature f) {
final int mask = f.getMask();
switch (f.featureIndex()) {
case 0:
return _with(_enabledFor1 | mask, _explicitFor1 | mask,
_enabledFor2, _explicitFor2);
case 1:
return _with(_enabledFor1, _explicitFor1,
_enabledFor2 | mask, _explicitFor2 | mask);
default:
VersionUtil.throwInternal();
return this;
}
}
/**
* "Bulk" variant of {@link #with(DatatypeFeature)} which allows explicit enabling
* of multiple features
*
* @param features {@link DatatypeFeature}s to explicitly enable in this set
*
* @return Existing instance if there is no change (features were already explicitly enabled),
* or a new instance with features explicitly enabled (if it was not).
*/
public DatatypeFeatures withFeatures(DatatypeFeature... features) {
int mask = _calcMask(features);
if (mask == 0) {
return this;
}
switch (features[0].featureIndex()) {
case 0:
return _with(_enabledFor1 | mask, _explicitFor1 | mask,
_enabledFor2, _explicitFor2);
case 1:
return _with(_enabledFor1, _explicitFor1,
_enabledFor2 | mask, _explicitFor2 | mask);
default:
VersionUtil.throwInternal();
return this;
}
}
/**
* Mutant factory method that returns an instance with given Feature
* explicitly disabled.
*
* @param f {@link DatatypeFeature} to explicitly disable in this set
*
* @return Existing instance if there is no change (feature was already explicitly disabled),
* or a new instance with feature explicitly disabled (if it was not).
*/
public DatatypeFeatures without(DatatypeFeature f) {
final int mask = f.getMask();
switch (f.featureIndex()) {
case 0:
return _with(_enabledFor1 & ~mask, _explicitFor1 | mask,
_enabledFor2, _explicitFor2);
case 1:
return _with(_enabledFor1, _explicitFor1,
_enabledFor2 & ~mask, _explicitFor2 | mask);
default:
VersionUtil.throwInternal();
return this;
}
}
/**
* "Bulk" variant of {@link #without(DatatypeFeature)} which allows explicit disabling
* of multiple features
*
* @param features {@link DatatypeFeature}s to explicitly disable in this set
*
* @return Existing instance if there is no change (features were already explicitly disabled),
* or a new instance with features explicitly disabled (if it was not).
*/
public DatatypeFeatures withoutFeatures(DatatypeFeature... features) {
int mask = _calcMask(features);
if (mask == 0) {
return this;
}
switch (features[0].featureIndex()) {
case 0:
return _with(_enabledFor1 & ~mask, _explicitFor1 | mask,
_enabledFor2, _explicitFor2);
case 1:
return _with(_enabledFor1, _explicitFor1,
_enabledFor2 & ~mask, _explicitFor2 | mask);
default:
VersionUtil.throwInternal();
return this;
}
}
private final static int _calcMask(DatatypeFeature... features) {
int mask = 0;
for (DatatypeFeature f : features) {
mask |= f.getMask();
}
return mask;
}
/*
/**********************************************************************
/* Public accessors
/**********************************************************************
*/
/**
* Accessor for getting value of specified feature in this set, regardless of
* whether explicit defined or not (if not explicitly enabled/disabled returns
* default value, {@link DatatypeFeature#enabledByDefault()}.
*
* @param f Feature to check
*
* @return True if the specified Feature is enabled in this set either explicitly
* or by having enabled by default (if not explicit enabled or disabled).
*/
public boolean isEnabled(DatatypeFeature f) {
switch (f.featureIndex()) {
case 0:
return f.enabledIn(_enabledFor1);
case 1:
return f.enabledIn(_enabledFor2);
default:
VersionUtil.throwInternal();
return false;
}
}
/**
* Accessor for checking whether given feature has been explicitly enabled or
* disabled in this set or not: if not it has the default value.
*
* @param f Feature to check
*
* @return Whether given feature has been explicitly set (enabled or disabled)
* in this set or not.
*/
public boolean isExplicitlySet(DatatypeFeature f) {
switch (f.featureIndex()) {
case 0:
return f.enabledIn(_explicitFor1);
case 1:
return f.enabledIn(_explicitFor2);
default:
VersionUtil.throwInternal();
return false;
}
}
/**
* Accessor for getting explicit state of given feature in this set
* iff explicitly set, or {@code null} if not explicitly set (default value)
*
* @param f Feature to check
*
* @return {@code Boolean.TRUE} if Feature has been explicitly enabled in this set;
* {@code Boolean.FALSE} if Feature has been explicitly disabled in this set; or
* {@code null} if Feature still has its default value.
*/
public Boolean getExplicitState(DatatypeFeature f) {
switch (f.featureIndex()) {
case 0:
if (f.enabledIn(_explicitFor1)) {
return f.enabledIn(_enabledFor1);
}
return null;
case 1:
if (f.enabledIn(_explicitFor2)) {
return f.enabledIn(_enabledFor2);
}
return null;
default:
VersionUtil.throwInternal();
return null;
}
}
/*
/**********************************************************************
/* Helper classes
/**********************************************************************
*/
/**
* Helper class to avoid cyclic dependencies when initializing default
* instance for {@link DatatypeFeatures}.
*/
private static class DefaultHolder
{
private static final DatatypeFeatures DEFAULT_FEATURES;
static {
DEFAULT_FEATURES = new DatatypeFeatures(
collectDefaults(EnumFeature.values()), 0,
collectDefaults(JsonNodeFeature.values()), 0
);
}
private static & JacksonFeature> int collectDefaults(F[] features)
{
int flags = 0;
for (JacksonFeature f : features) {
if (f.enabledByDefault()) {
flags |= f.getMask();
}
}
return flags;
}
public static DatatypeFeatures getDefault() {
return DEFAULT_FEATURES;
}
}
}