org.immutables.fixture.modifiable.ImmutableDefaultMap Maven / Gradle / Ivy
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package org.immutables.fixture.modifiable;
import com.google.errorprone.annotations.CanIgnoreReturnValue;
import com.google.errorprone.annotations.Var;
import java.util.Collections;
import java.util.LinkedHashMap;
import java.util.Map;
import java.util.Objects;
import javax.annotation.CheckReturnValue;
import javax.annotation.Nullable;
import javax.annotation.ParametersAreNonnullByDefault;
import javax.annotation.concurrent.Immutable;
import javax.annotation.concurrent.NotThreadSafe;
import org.immutables.value.Generated;
/**
* Immutable implementation of {@link DefaultMap}.
*
* Use the builder to create immutable instances:
* {@code ImmutableDefaultMap.builder()}.
*/
@Generated(from = "DefaultMap", generator = "Immutables")
@SuppressWarnings({"all"})
@ParametersAreNonnullByDefault
@javax.annotation.processing.Generated("org.immutables.processor.ProxyProcessor")
@Immutable
@CheckReturnValue
public final class ImmutableDefaultMap implements DefaultMap {
private final Map map;
private ImmutableDefaultMap(ImmutableDefaultMap.Builder builder) {
this.map = builder.mapIsSet()
? createUnmodifiableMap(false, false, builder.map)
: createUnmodifiableMap(true, false, DefaultMap.super.getMap());
}
private ImmutableDefaultMap(Map map) {
this.map = map;
}
/**
* @return The value of the {@code map} attribute
*/
@Override
public Map getMap() {
return map;
}
/**
* Copy the current immutable object by replacing the {@link DefaultMap#getMap() map} map with the specified map.
* Nulls are not permitted as keys or values.
* A shallow reference equality check is used to prevent copying of the same value by returning {@code this}.
* @param entries The entries to be added to the map map
* @return A modified copy of {@code this} object
*/
public final ImmutableDefaultMap withMap(Map entries) {
if (this.map == entries) return this;
Map newValue = createUnmodifiableMap(true, false, entries);
return new ImmutableDefaultMap(newValue);
}
/**
* This instance is equal to all instances of {@code ImmutableDefaultMap} that have equal attribute values.
* @return {@code true} if {@code this} is equal to {@code another} instance
*/
@Override
public boolean equals(@Nullable Object another) {
if (this == another) return true;
return another instanceof ImmutableDefaultMap
&& equalTo(0, (ImmutableDefaultMap) another);
}
private boolean equalTo(int synthetic, ImmutableDefaultMap another) {
return map.equals(another.map);
}
/**
* Computes a hash code from attributes: {@code map}.
* @return hashCode value
*/
@Override
public int hashCode() {
@Var int h = 5381;
h += (h << 5) + map.hashCode();
return h;
}
/**
* Prints the immutable value {@code DefaultMap} with attribute values.
* @return A string representation of the value
*/
@Override
public String toString() {
return "DefaultMap{"
+ "map=" + map
+ "}";
}
/**
* Creates an immutable copy of a {@link DefaultMap} value.
* Uses accessors to get values to initialize the new immutable instance.
* If an instance is already immutable, it is returned as is.
* @param instance The instance to copy
* @return A copied immutable DefaultMap instance
*/
public static ImmutableDefaultMap copyOf(DefaultMap instance) {
if (instance instanceof ImmutableDefaultMap) {
return (ImmutableDefaultMap) instance;
}
return ImmutableDefaultMap.builder()
.from(instance)
.build();
}
/**
* Creates a builder for {@link ImmutableDefaultMap ImmutableDefaultMap}.
*
* ImmutableDefaultMap.builder()
* .putMap|putAllMap(String => String) // {@link DefaultMap#getMap() map} mappings
* .build();
*
* @return A new ImmutableDefaultMap builder
*/
public static ImmutableDefaultMap.Builder builder() {
return new ImmutableDefaultMap.Builder();
}
/**
* Builds instances of type {@link ImmutableDefaultMap ImmutableDefaultMap}.
* Initialize attributes and then invoke the {@link #build()} method to create an
* immutable instance.
* {@code Builder} is not thread-safe and generally should not be stored in a field or collection,
* but instead used immediately to create instances.
*/
@Generated(from = "DefaultMap", generator = "Immutables")
@NotThreadSafe
public static final class Builder {
private static final long OPT_BIT_MAP = 0x1L;
private long optBits;
private Map map = new LinkedHashMap();
private Builder() {
}
/**
* Fill a builder with attribute values from the provided {@code ModifiableDefaultMap} instance.
* @param instance The instance from which to copy values
* @return {@code this} builder for use in a chained invocation
*/
@CanIgnoreReturnValue
public final Builder from(ModifiableDefaultMap instance) {
Objects.requireNonNull(instance, "instance");
putAllMap(instance.getMap());
return this;
}
/**
* Fill a builder with attribute values from the provided {@code DefaultMap} instance.
* Regular attribute values will be replaced with those from the given instance.
* Absent optional values will not replace present values.
* Collection elements and entries will be added, not replaced.
* @param instance The instance from which to copy values
* @return {@code this} builder for use in a chained invocation
*/
@CanIgnoreReturnValue
public final Builder from(DefaultMap instance) {
Objects.requireNonNull(instance, "instance");
if (instance instanceof ModifiableDefaultMap) {
return from((ModifiableDefaultMap) instance);
}
putAllMap(instance.getMap());
return this;
}
/**
* Put one entry to the {@link DefaultMap#getMap() map} map.
* @param key The key in the map map
* @param value The associated value in the map map
* @return {@code this} builder for use in a chained invocation
*/
@CanIgnoreReturnValue
public final Builder putMap(String key, String value) {
this.map.put(
Objects.requireNonNull(key, "map key"),
Objects.requireNonNull(value, value == null ? "map value for key: " + key : null));
optBits |= OPT_BIT_MAP;
return this;
}
/**
* Put one entry to the {@link DefaultMap#getMap() map} map. Nulls are not permitted
* @param entry The key and value entry
* @return {@code this} builder for use in a chained invocation
*/
@CanIgnoreReturnValue
public final Builder putMap(Map.Entry entry) {
String k = entry.getKey();
String v = entry.getValue();
this.map.put(
Objects.requireNonNull(k, "map key"),
Objects.requireNonNull(v, v == null ? "map value for key: " + k : null));
optBits |= OPT_BIT_MAP;
return this;
}
/**
* Sets or replaces all mappings from the specified map as entries for the {@link DefaultMap#getMap() map} map. Nulls are not permitted
* @param entries The entries that will be added to the map map
* @return {@code this} builder for use in a chained invocation
*/
@CanIgnoreReturnValue
public final Builder map(Map entries) {
this.map.clear();
optBits |= OPT_BIT_MAP;
return putAllMap(entries);
}
/**
* Put all mappings from the specified map as entries to {@link DefaultMap#getMap() map} map. Nulls are not permitted
* @param entries The entries that will be added to the map map
* @return {@code this} builder for use in a chained invocation
*/
@CanIgnoreReturnValue
public final Builder putAllMap(Map entries) {
for (Map.Entry e : entries.entrySet()) {
String k = e.getKey();
String v = e.getValue();
this.map.put(
Objects.requireNonNull(k, "map key"),
Objects.requireNonNull(v, v == null ? "map value for key: " + k : null));
}
optBits |= OPT_BIT_MAP;
return this;
}
/**
* Builds a new {@link ImmutableDefaultMap ImmutableDefaultMap}.
* @return An immutable instance of DefaultMap
* @throws java.lang.IllegalStateException if any required attributes are missing
*/
public ImmutableDefaultMap build() {
return new ImmutableDefaultMap(this);
}
private boolean mapIsSet() {
return (optBits & OPT_BIT_MAP) != 0;
}
}
private static Map createUnmodifiableMap(boolean checkNulls, boolean skipNulls, Map map) {
switch (map.size()) {
case 0: return Collections.emptyMap();
case 1: {
Map.Entry e = map.entrySet().iterator().next();
K k = e.getKey();
V v = e.getValue();
if (checkNulls) {
Objects.requireNonNull(k, "key");
Objects.requireNonNull(v, v == null ? "value for key: " + k : null);
}
if (skipNulls && (k == null || v == null)) {
return Collections.emptyMap();
}
return Collections.singletonMap(k, v);
}
default: {
Map linkedMap = new LinkedHashMap<>(map.size() * 4 / 3 + 1);
if (skipNulls || checkNulls) {
for (Map.Entry e : map.entrySet()) {
K k = e.getKey();
V v = e.getValue();
if (skipNulls) {
if (k == null || v == null) continue;
} else if (checkNulls) {
Objects.requireNonNull(k, "key");
Objects.requireNonNull(v, v == null ? "value for key: " + k : null);
}
linkedMap.put(k, v);
}
} else {
linkedMap.putAll(map);
}
return Collections.unmodifiableMap(linkedMap);
}
}
}
}