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simple lambda builders #1533

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Merged
merged 1 commit into from
Jan 17, 2025
Merged

simple lambda builders #1533

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12 changes: 12 additions & 0 deletions value-fixture/src/org/immutables/fixture/builder/ForLambdaBuilder.java
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Original file line number Diff line number Diff line change
@@ -0,0 +1,12 @@
package org.immutables.fixture.builder;

import org.immutables.fixture.builder.attribute_builders.FirstPartyImmutable;
import org.immutables.fixture.builder.attribute_builders.ThirdPartyImmutable;
import org.immutables.value.Value;

@Value.Immutable
@Value.Style(attributeBuilderDetection = true)
public interface ForLambdaBuilder {
FirstPartyImmutable firstPartyImmutable();
ThirdPartyImmutable thirdPartyImmutable();
}
11 changes: 11 additions & 0 deletions value-fixture/test/org/immutables/fixture/builder/AttributeBuilderTest.java
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Expand Up @@ -58,6 +58,17 @@ public void toBuilderSandwich() {
check(instance.a()).is(2);
}

@Test
public void lambdaBuilder() {
ForLambdaBuilder l = ImmutableForLambdaBuilder.builder()
.firstPartyImmutable(b -> b.value("X"))
.thirdPartyImmutable(b -> b.setValue("Y"))
.build();

check(l.firstPartyImmutable().value()).is("X");
check(l.thirdPartyImmutable().getValue()).is("Y");
}

@Test
public void basicApiForVanillaParent() {
assertBasicApi(ImmutableVanillaAttributeBuilderParent.class,
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36 changes: 36 additions & 0 deletions value-processor/src/org/immutables/value/processor/Immutables.generator
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Expand Up @@ -1787,6 +1787,24 @@ checkNotIsSet([v.names.isSet](), "[v.names.raw]");
}
[if v.isAttributeBuilder]

/**
* Initialized [sourceDocRef v] using lambda (consumer) which receives builder instance for the attribute value.
*
* Once called, the attribute builder field is set to a new instance of the builder.
* If called more than once, returns the same builder instance.
*/
[eachLine v.builderAttributeAnnotation]
[deprecation v]
[builderInitAccess v]final [builderReturnType type] [v.names.init](java.util.function.Consumer<[attributeBuilderBuilderType v.getAttributeBuilderDescriptor]> consumer) {
if (this.[v.name] == null) {
this.[v.name] = [createAttributeBuilder v.getAttributeBuilderDescriptor];
}
[nondefaultSetInBuilder v]
[mandatorySetInBuilder v]
consumer.accept(this.[v.name]);
return [builderReturnThis type];
}

/**
* Returns a builder for [sourceDocRef v].
*
Expand Down Expand Up @@ -2101,6 +2119,24 @@ checkNotIsSet([v.names.isSet](), "[v.names.raw]");
}
[if v.isAttributeBuilder]

/**
* Initialized [sourceDocRef v] using lambda (consumer) which receives builder instance for the attribute value.
*
* Once called, the attribute builder field is set to a new instance of the builder.
* If called more than once, returns the same builder instance.
*/
[eachLine v.builderAttributeAnnotation]
[deprecation v]
[builderInitAccess v]final [builderReturnType type] [v.names.init](java.util.function.Consumer<[attributeBuilderBuilderType v.getAttributeBuilderDescriptor]> consumer) {
if (this.[v.name] == null) {
this.[v.name] = [createAttributeBuilder v.getAttributeBuilderDescriptor];
}
[nondefaultSetInBuilder v]
[mandatorySetInBuilder v]
consumer.accept(this.[v.name]);
return [builderReturnThis type];
}

/**
* Returns a builder for [sourceDocRef v].
*
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