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Add RecordComponentInfo.getAttribute(byte tag) #494

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Merged
garydgregory merged 4 commits into from
Feb 1, 2026
+31 −0
Merged

Add RecordComponentInfo.getAttribute(byte tag) #494

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5054f64
Add getAttribute(final byte tag) to RecordComponentInfo
Feb 1, 2026
eb3a9a2
fix checkstyle issues
Feb 1, 2026
f9a0d66
Make a separate record test testRecordComponentGetAttribute
Feb 1, 2026
57c7c6e
Javadoc
garydgregory Feb 1, 2026
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19 changes: 19 additions & 0 deletions src/main/java/org/apache/bcel/classfile/RecordComponentInfo.java
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Original file line number Diff line number Diff line change
Expand Up @@ -77,6 +77,25 @@ public void dump(final DataOutputStream file) throws IOException {
}
}

/**
* Gets the attribute for the given tag if present, or null if absent.
*
* @param <T> the attribute type.
* @param tag the attribute tag.
* @return Attribute for given tag, null if not found.
* Refer to {@link org.apache.bcel.Const#ATTR_UNKNOWN} constants named ATTR_* for possible values.
* @since 6.13.0
*/
@SuppressWarnings("unchecked")
public final <T extends Attribute> T getAttribute(final byte tag) {
for (final Attribute attribute : getAttributes()) {
if (attribute.getTag() == tag) {
return (T) attribute;
}
}
return null;
}

/**
* Gets all attributes.
*
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12 changes: 12 additions & 0 deletions src/test/java/org/apache/bcel/classfile/RecordTest.java
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Expand Up @@ -21,12 +21,14 @@
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertNull;
import static org.junit.jupiter.api.Assertions.assertTrue;

import java.io.File;
import java.io.IOException;

import org.apache.bcel.AbstractTest;
import org.apache.bcel.Const;
import org.apache.bcel.util.SyntheticRepository;
import org.apache.bcel.visitors.CountingVisitor;
import org.junit.jupiter.api.Test;
Expand Down Expand Up @@ -118,4 +120,14 @@ void testRecordToString() throws ClassNotFoundException, ClassFormatException, I
assertEquals("RecordComponentInfo(aNumber,I,0):", firstComponent.toString());
}

@Test
void testRecordComponentGetAttribute() throws ClassFormatException, IOException {
final JavaClass clazz = new ClassParser("src/test/resources/record/SimpleRecord.class").parse();
final Record recordAttribute = (Record) findAttribute("Record", clazz)[0];
final RecordComponentInfo secondComponent = recordAttribute.getComponents()[1];
final RuntimeVisibleAnnotations ann = secondComponent.getAttribute(Const.ATTR_RUNTIME_VISIBLE_ANNOTATIONS);
assertEquals("RuntimeVisibleAnnotations:\n"
+ " @Ljavax/annotation/Nonnull;", ann.toString());
assertNull(secondComponent.getAttribute(Const.ATTR_RUNTIME_INVISIBLE_ANNOTATIONS));
}
}
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