org.immutables.fixture.style.ImmutableCanBuild Maven / Gradle / Ivy
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package org.immutables.fixture.style;
import com.google.common.base.MoreObjects;
import com.google.errorprone.annotations.CanIgnoreReturnValue;
import com.google.errorprone.annotations.Var;
import java.util.ArrayList;
import java.util.List;
import java.util.Objects;
import java.util.Optional;
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 CanBuild}.
*
* Use the builder to create immutable instances:
* {@code new CanBuild.Builder()}.
*/
@Generated(from = "CanBuild", generator = "Immutables")
@SuppressWarnings({"all"})
@ParametersAreNonnullByDefault
@javax.annotation.processing.Generated("org.immutables.processor.ProxyProcessor")
@Immutable
@CheckReturnValue
public final class ImmutableCanBuild implements CanBuild {
private final int a;
private final @Nullable String b;
private ImmutableCanBuild(int a, @Nullable String b) {
this.a = a;
this.b = b;
}
/**
* @return The value of the {@code a} attribute
*/
@Override
public int a() {
return a;
}
/**
* @return The value of the {@code b} attribute
*/
@Override
public Optional b() {
return Optional.ofNullable(b);
}
/**
* Copy the current immutable object by setting a value for the {@link CanBuild#a() a} attribute.
* A value equality check is used to prevent copying of the same value by returning {@code this}.
* @param value A new value for a
* @return A modified copy of the {@code this} object
*/
public final ImmutableCanBuild withA(int value) {
if (this.a == value) return this;
return new ImmutableCanBuild(value, this.b);
}
/**
* Copy the current immutable object by setting a present value for the optional {@link CanBuild#b() b} attribute.
* @param value The value for b
* @return A modified copy of {@code this} object
*/
public final ImmutableCanBuild withB(String value) {
@Nullable String newValue = Objects.requireNonNull(value, "b");
if (Objects.equals(this.b, newValue)) return this;
return new ImmutableCanBuild(this.a, newValue);
}
/**
* Copy the current immutable object by setting an optional value for the {@link CanBuild#b() b} attribute.
* An equality check is used on inner nullable value to prevent copying of the same value by returning {@code this}.
* @param optional A value for b
* @return A modified copy of {@code this} object
*/
public final ImmutableCanBuild withB(Optional optional) {
@Nullable String value = optional.orElse(null);
if (Objects.equals(this.b, value)) return this;
return new ImmutableCanBuild(this.a, value);
}
/**
* This instance is equal to all instances of {@code ImmutableCanBuild} 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 ImmutableCanBuild
&& equalTo(0, (ImmutableCanBuild) another);
}
private boolean equalTo(int synthetic, ImmutableCanBuild another) {
return a == another.a
&& Objects.equals(b, another.b);
}
/**
* Computes a hash code from attributes: {@code a}, {@code b}.
* @return hashCode value
*/
@Override
public int hashCode() {
@Var int h = 5381;
h += (h << 5) + a;
h += (h << 5) + Objects.hashCode(b);
return h;
}
/**
* Prints the immutable value {@code CanBuild} with attribute values.
* @return A string representation of the value
*/
@Override
public String toString() {
return MoreObjects.toStringHelper("CanBuild")
.omitNullValues()
.add("a", a)
.add("b", b)
.toString();
}
/**
* Creates an immutable copy of a {@link CanBuild} 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 CanBuild instance
*/
public static ImmutableCanBuild copyOf(CanBuild instance) {
if (instance instanceof ImmutableCanBuild) {
return (ImmutableCanBuild) instance;
}
return new CanBuild.Builder()
.from(instance)
.build();
}
/**
* Builds instances of type {@link ImmutableCanBuild ImmutableCanBuild}.
* 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 = "CanBuild", generator = "Immutables")
@NotThreadSafe
public static class Builder {
private static final long INIT_BIT_A = 0x1L;
private long initBits = 0x1L;
private int a;
private @Nullable String b;
/**
* Creates a builder for {@link ImmutableCanBuild ImmutableCanBuild} instances.
*
* new CanBuild.Builder()
* .a(int) // required {@link CanBuild#a() a}
* .b(String) // optional {@link CanBuild#b() b}
* .build();
*
*/
public Builder() {
if (!(this instanceof CanBuild.Builder)) {
throw new UnsupportedOperationException("Use: new CanBuild.Builder()");
}
}
/**
* Fill a builder with attribute values from the provided {@code CanBuild} instance.
* Regular attribute values will be replaced with those from the given instance.
* Absent optional values will not replace present values.
* @param instance The instance from which to copy values
* @return {@code this} builder for use in a chained invocation
*/
@CanIgnoreReturnValue
public final CanBuild.Builder from(CanBuild instance) {
Objects.requireNonNull(instance, "instance");
a(instance.a());
Optional bOptional = instance.b();
if (bOptional.isPresent()) {
b(bOptional);
}
return (CanBuild.Builder) this;
}
/**
* Initializes the value for the {@link CanBuild#a() a} attribute.
* @param a The value for a
* @return {@code this} builder for use in a chained invocation
*/
@CanIgnoreReturnValue
public final CanBuild.Builder a(int a) {
this.a = a;
initBits &= ~INIT_BIT_A;
return (CanBuild.Builder) this;
}
/**
* Initializes the optional value {@link CanBuild#b() b} to b.
* @param b The value for b
* @return {@code this} builder for chained invocation
*/
@CanIgnoreReturnValue
public final CanBuild.Builder b(String b) {
this.b = Objects.requireNonNull(b, "b");
return (CanBuild.Builder) this;
}
/**
* Initializes the optional value {@link CanBuild#b() b} to b.
* @param b The value for b
* @return {@code this} builder for use in a chained invocation
*/
@CanIgnoreReturnValue
public final CanBuild.Builder b(Optional b) {
this.b = b.orElse(null);
return (CanBuild.Builder) this;
}
/**
* Builds a new {@link ImmutableCanBuild ImmutableCanBuild}.
* @return An immutable instance of CanBuild
* @throws java.lang.IllegalStateException if any required attributes are missing
*/
public ImmutableCanBuild build() {
if (initBits != 0) {
throw new IllegalStateException(formatRequiredAttributesMessage());
}
return new ImmutableCanBuild(a, b);
}
/**
* If all required attributes are set and calling {@link #build()}
* will return an instance and will not throw {@code IllegalStateException}.
* @return {@code true} if all mandatory attributes are initialized
*/
public boolean isBuilderCanBuild() {
return initBits == 0;
}
private String formatRequiredAttributesMessage() {
List attributes = new ArrayList<>();
if ((initBits & INIT_BIT_A) != 0) attributes.add("a");
return "Cannot build CanBuild, some of required attributes are not set " + attributes;
}
}
}