org.immutables.fixture.ImmutableSafeInitSingl Maven / Gradle / Ivy
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package org.immutables.fixture;
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 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 SafeDerivedInit.SafeInitSingl}.
*
* Use the builder to create immutable instances:
* {@code ImmutableSafeInitSingl.builder()}.
* Use the static factory method to get the default singleton instance:
* {@code ImmutableSafeInitSingl.of()}.
*/
@Generated(from = "SafeDerivedInit.SafeInitSingl", generator = "Immutables")
@SuppressWarnings({"all"})
@ParametersAreNonnullByDefault
@javax.annotation.processing.Generated("org.immutables.processor.ProxyProcessor")
@Immutable
@CheckReturnValue
public final class ImmutableSafeInitSingl implements SafeDerivedInit.SafeInitSingl {
private final int a;
private transient final int b;
private ImmutableSafeInitSingl() {
this.a = initShim.a();
this.b = initShim.b();
this.initShim = null;
}
private ImmutableSafeInitSingl(ImmutableSafeInitSingl.Builder builder) {
if (builder.aIsSet()) {
initShim.a(builder.a);
}
this.a = initShim.a();
this.b = initShim.b();
this.initShim = null;
}
private ImmutableSafeInitSingl(int a) {
initShim.a(a);
this.a = initShim.a();
this.b = initShim.b();
this.initShim = null;
}
private static final byte STAGE_INITIALIZING = -1;
private static final byte STAGE_UNINITIALIZED = 0;
private static final byte STAGE_INITIALIZED = 1;
@SuppressWarnings("Immutable")
private transient volatile InitShim initShim = new InitShim();
@Generated(from = "SafeDerivedInit.SafeInitSingl", generator = "Immutables")
private final class InitShim {
private byte aBuildStage = STAGE_UNINITIALIZED;
private int a;
int a() {
if (aBuildStage == STAGE_INITIALIZING) throw new IllegalStateException(formatInitCycleMessage());
if (aBuildStage == STAGE_UNINITIALIZED) {
aBuildStage = STAGE_INITIALIZING;
this.a = aInitialize();
aBuildStage = STAGE_INITIALIZED;
}
return this.a;
}
void a(int a) {
this.a = a;
aBuildStage = STAGE_INITIALIZED;
}
private byte bBuildStage = STAGE_UNINITIALIZED;
private int b;
int b() {
if (bBuildStage == STAGE_INITIALIZING) throw new IllegalStateException(formatInitCycleMessage());
if (bBuildStage == STAGE_UNINITIALIZED) {
bBuildStage = STAGE_INITIALIZING;
this.b = bInitialize();
bBuildStage = STAGE_INITIALIZED;
}
return this.b;
}
private String formatInitCycleMessage() {
List attributes = new ArrayList<>();
if (aBuildStage == STAGE_INITIALIZING) attributes.add("a");
if (bBuildStage == STAGE_INITIALIZING) attributes.add("b");
return "Cannot build SafeInitSingl, attribute initializers form cycle " + attributes;
}
}
private int aInitialize() {
return SafeDerivedInit.SafeInitSingl.super.a();
}
private int bInitialize() {
return SafeDerivedInit.SafeInitSingl.super.b();
}
/**
* @return The value of the {@code a} attribute
*/
@Override
public int a() {
InitShim shim = this.initShim;
return shim != null
? shim.a()
: this.a;
}
/**
* @return The computed-at-construction value of the {@code b} attribute
*/
@Override
public int b() {
InitShim shim = this.initShim;
return shim != null
? shim.b()
: this.b;
}
/**
* Copy the current immutable object by setting a value for the {@link SafeDerivedInit.SafeInitSingl#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 ImmutableSafeInitSingl withA(int value) {
if (this.a == value) return this;
return validate(new ImmutableSafeInitSingl(value));
}
/**
* This instance is equal to all instances of {@code ImmutableSafeInitSingl} 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 ImmutableSafeInitSingl
&& equalTo(0, (ImmutableSafeInitSingl) another);
}
private boolean equalTo(int synthetic, ImmutableSafeInitSingl another) {
return a == another.a
&& 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) + b;
return h;
}
/**
* Prints the immutable value {@code SafeInitSingl} with attribute values.
* @return A string representation of the value
*/
@Override
public String toString() {
return MoreObjects.toStringHelper("SafeInitSingl")
.omitNullValues()
.add("a", a)
.add("b", b)
.toString();
}
private static final ImmutableSafeInitSingl INSTANCE = validate(new ImmutableSafeInitSingl());
/**
* Returns the default immutable singleton value of {@code SafeInitSingl}
* @return An immutable instance of SafeInitSingl
*/
public static ImmutableSafeInitSingl of() {
return INSTANCE;
}
private static ImmutableSafeInitSingl validate(ImmutableSafeInitSingl instance) {
return INSTANCE != null && INSTANCE.equalTo(0, instance) ? INSTANCE : instance;
}
/**
* Creates an immutable copy of a {@link SafeDerivedInit.SafeInitSingl} 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 SafeInitSingl instance
*/
public static ImmutableSafeInitSingl copyOf(SafeDerivedInit.SafeInitSingl instance) {
if (instance instanceof ImmutableSafeInitSingl) {
return (ImmutableSafeInitSingl) instance;
}
return ImmutableSafeInitSingl.builder()
.from(instance)
.build();
}
/**
* Creates a builder for {@link ImmutableSafeInitSingl ImmutableSafeInitSingl}.
*
* ImmutableSafeInitSingl.builder()
* .a(int) // optional {@link SafeDerivedInit.SafeInitSingl#a() a}
* .build();
*
* @return A new ImmutableSafeInitSingl builder
*/
public static ImmutableSafeInitSingl.Builder builder() {
return new ImmutableSafeInitSingl.Builder();
}
/**
* Builds instances of type {@link ImmutableSafeInitSingl ImmutableSafeInitSingl}.
* 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 = "SafeDerivedInit.SafeInitSingl", generator = "Immutables")
@NotThreadSafe
public static final class Builder {
private static final long OPT_BIT_A = 0x1L;
private long optBits;
private int a;
private Builder() {
}
/**
* Fill a builder with attribute values from the provided {@code SafeInitSingl} 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 Builder from(SafeDerivedInit.SafeInitSingl instance) {
Objects.requireNonNull(instance, "instance");
a(instance.a());
return this;
}
/**
* Initializes the value for the {@link SafeDerivedInit.SafeInitSingl#a() a} attribute.
*
If not set, this attribute will have a default value as returned by the initializer of {@link SafeDerivedInit.SafeInitSingl#a() a}.
* @param a The value for a
* @return {@code this} builder for use in a chained invocation
*/
@CanIgnoreReturnValue
public final Builder a(int a) {
this.a = a;
optBits |= OPT_BIT_A;
return this;
}
/**
* Builds a new {@link ImmutableSafeInitSingl ImmutableSafeInitSingl}.
* @return An immutable instance of SafeInitSingl
* @throws java.lang.IllegalStateException if any required attributes are missing
*/
public ImmutableSafeInitSingl build() {
return ImmutableSafeInitSingl.validate(new ImmutableSafeInitSingl(this));
}
private boolean aIsSet() {
return (optBits & OPT_BIT_A) != 0;
}
}
}