Package net.bytebuddy.implementation
Class HashCodeMethod.Appender
- java.lang.Object
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- net.bytebuddy.implementation.HashCodeMethod.Appender
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- All Implemented Interfaces:
ByteCodeAppender
- Enclosing class:
- HashCodeMethod
@Enhance protected static class HashCodeMethod.Appender extends java.lang.Object implements ByteCodeAppender
A byte code appender to implement a hash code method.
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Nested Class Summary
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Nested classes/interfaces inherited from interface net.bytebuddy.implementation.bytecode.ByteCodeAppender
ByteCodeAppender.Compound, ByteCodeAppender.Simple, ByteCodeAppender.Size
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Field Summary
Fields Modifier and Type Field Description private java.util.List<FieldDescription.InDefinedShape>
fieldDescriptions
A list of fields to include in the hash code computation.private StackManipulation
initialValue
Loads the initial hash code onto the operand stack.private int
multiplier
A multiplier for each value before adding a field's hash code value.private ElementMatcher<? super FieldDescription.InDefinedShape>
nonNullable
A matcher to determine fields of a reference type that cannot benull
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Constructor Summary
Constructors Modifier Constructor Description protected
Appender(StackManipulation initialValue, int multiplier, java.util.List<FieldDescription.InDefinedShape> fieldDescriptions, ElementMatcher<? super FieldDescription.InDefinedShape> nonNullable)
Creates a new appender for implementing a hash code method.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description ByteCodeAppender.Size
apply(org.objectweb.asm.MethodVisitor methodVisitor, Implementation.Context implementationContext, MethodDescription instrumentedMethod)
Applies this byte code appender to a type creation process.
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Field Detail
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initialValue
private final StackManipulation initialValue
Loads the initial hash code onto the operand stack.
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multiplier
private final int multiplier
A multiplier for each value before adding a field's hash code value.
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fieldDescriptions
private final java.util.List<FieldDescription.InDefinedShape> fieldDescriptions
A list of fields to include in the hash code computation.
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nonNullable
private final ElementMatcher<? super FieldDescription.InDefinedShape> nonNullable
A matcher to determine fields of a reference type that cannot benull
.
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Constructor Detail
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Appender
protected Appender(StackManipulation initialValue, int multiplier, java.util.List<FieldDescription.InDefinedShape> fieldDescriptions, ElementMatcher<? super FieldDescription.InDefinedShape> nonNullable)
Creates a new appender for implementing a hash code method.- Parameters:
initialValue
- Loads the initial hash code onto the operand stack.multiplier
- A multiplier for each value before adding a field's hash code value.fieldDescriptions
- A list of fields to include in the hash code computation.nonNullable
- A matcher to determine fields of a reference type that cannot benull
.
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Method Detail
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apply
public ByteCodeAppender.Size apply(org.objectweb.asm.MethodVisitor methodVisitor, Implementation.Context implementationContext, MethodDescription instrumentedMethod)
Applies this byte code appender to a type creation process.- Specified by:
apply
in interfaceByteCodeAppender
- Parameters:
methodVisitor
- The method visitor to which the byte code appender writes its code to.implementationContext
- The implementation context of the current type creation process.instrumentedMethod
- The method that is the target of the instrumentation.- Returns:
- The required size for the applied byte code to run.
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