OpenJDK 27 · java.lang.invoke.AbstractValidatingLambdaMetafactory

Field Summary

Modifier and Type	Field and Description
pack-priv final Class<?>[]	altInterfaces
pack-priv final MethodType[]	altMethods
pack-priv final MethodHandles.Lookup	caller
pack-priv final MethodType	dynamicMethodType
pack-priv final MethodType	factoryType
pack-priv final Class<?>	implClass
pack-priv final MethodHandle	implementation
pack-priv final MethodHandleInfo	implInfo
pack-priv final boolean	implIsInstanceMethod
pack-priv final int	implKind
pack-priv final MethodType	implMethodType
pack-priv final Class<?>	interfaceClass
pack-priv final String	interfaceMethodName
pack-priv final MethodType	interfaceMethodType
pack-priv final boolean	isSerializable
pack-priv final Class<?>	targetClass

Constructor Summary

Access Constructor and Description

Access	Constructor and Description
pack-priv	AbstractValidatingLambdaMetafactory(MethodHandles.Lookup Stacked automatically by VM; represents a lookup context with the accessibility privileges of the caller. caller, MethodType Stacked automatically by VM; the signature of the invoked method, which includes the expected static type of the returned lambda object, and the static types of the captured arguments for the lambda. In the event that the implementation method is an instance method, the first argument in the invocation signature will correspond to the receiver. factoryType, String Name of the method in the functional interface to which the lambda or method reference is being converted, represented as a String. interfaceMethodName, MethodType Type of the method in the functional interface to which the lambda or method reference is being converted, represented as a MethodType. interfaceMethodType, MethodHandle The implementation method which should be called (with suitable adaptation of argument types, return types, and adjustment for captured arguments) when methods of the resulting functional interface instance are invoked. implementation, MethodType The signature of the primary functional interface method after type variables are substituted with their instantiation from the capture site dynamicMethodType, boolean Should the lambda be made serializable? If set, either the target type or one of the additional SAM types must extend `Serializable`. isSerializable, Class<?>[] Additional interfaces which the lambda object should implement. altInterfaces, MethodType[] Method types for additional signatures to be implemented by invoking the implementation method altMethods) Meta-factory constructor.

pack-priv

AbstractValidatingLambdaMetafactory(MethodHandles.Lookup

Stacked automatically by VM; represents a lookup context with the accessibility privileges of the caller.

caller, MethodType

Stacked automatically by VM; the signature of the invoked method, which includes the expected static type of the returned lambda object, and the static types of the captured arguments for the lambda. In the event that the implementation method is an instance method, the first argument in the invocation signature will correspond to the receiver.

factoryType, String

Name of the method in the functional interface to which the lambda or method reference is being converted, represented as a String.

interfaceMethodName, MethodType

Type of the method in the functional interface to which the lambda or method reference is being converted, represented as a MethodType.

interfaceMethodType, MethodHandle

The implementation method which should be called (with suitable adaptation of argument types, return types, and adjustment for captured arguments) when methods of the resulting functional interface instance are invoked.

implementation, MethodType

The signature of the primary functional interface method after type variables are substituted with their instantiation from the capture site

dynamicMethodType, boolean

Should the lambda be made serializable? If set, either the target type or one of the additional SAM types must extend Serializable.

isSerializable, Class<?>[]

Additional interfaces which the lambda object should implement.

altInterfaces, MethodType[]

Method types for additional signatures to be implemented by invoking the implementation method

altMethods)

Meta-factory constructor.

Method Summary

Modifier and Type	Method and Description
pack-priv abstract CallSite	Returns: a CallSite, which, when invoked, will return an instance of the functional interface buildCallSite() Build the CallSite.
private void	checkDescriptor(MethodType descriptor) Validate that the given descriptor's types are compatible with `dynamicMethodType`
private boolean	Returns: True if 'fromType' can be passed to an argument of 'toType' isAdaptableTo(Class<?> Type to convert from fromType, Class<?> Type to convert to toType, boolean If true, do strict checks, else allow that fromType may be parameterized strict) Check type adaptability for parameter types.
private boolean	Returns: True if 'fromType' can be converted to 'toType' isAdaptableToAsReturn(Class<?> fromType, Class<?> toType) Check type adaptability for return types -- special handling of void type) and parameterized fromType
private boolean	isAdaptableToAsReturnStrict(Class<?> fromType, Class<?> toType)
pack-priv void	validateMetafactoryArgs() Check the meta-factory arguments for errors

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

altInterfaces	back to summary
pack-priv final Class<?>[] altInterfaces

altMethods	back to summary
pack-priv final MethodType[] altMethods

caller	back to summary
pack-priv final MethodHandles.Lookup caller

dynamicMethodType	back to summary
pack-priv final MethodType dynamicMethodType

factoryType	back to summary
pack-priv final MethodType factoryType

implClass	back to summary
pack-priv final Class<?> implClass

implementation	back to summary
pack-priv final MethodHandle implementation

implInfo	back to summary
pack-priv final MethodHandleInfo implInfo

implIsInstanceMethod	back to summary
pack-priv final boolean implIsInstanceMethod

implKind	back to summary
pack-priv final int implKind

implMethodType	back to summary
pack-priv final MethodType implMethodType

interfaceClass	back to summary
pack-priv final Class<?> interfaceClass

interfaceMethodName	back to summary
pack-priv final String interfaceMethodName

interfaceMethodType	back to summary
pack-priv final MethodType interfaceMethodType

isSerializable	back to summary
pack-priv final boolean isSerializable

targetClass	back to summary
pack-priv final Class<?> targetClass

Constructor Detail

AbstractValidatingLambdaMetafactory back to summary

AbstractValidatingLambdaMetafactory	back to summary
pack-priv AbstractValidatingLambdaMetafactory(MethodHandles.Lookup caller, MethodType factoryType, String interfaceMethodName, MethodType interfaceMethodType, MethodHandle implementation, MethodType dynamicMethodType, boolean isSerializable, Class<?>[] altInterfaces, MethodType[] altMethods) throws LambdaConversionException Meta-factory constructor. Parameters caller:MethodHandles.Lookup Stacked automatically by VM; represents a lookup context with the accessibility privileges of the caller. factoryType:MethodType Stacked automatically by VM; the signature of the invoked method, which includes the expected static type of the returned lambda object, and the static types of the captured arguments for the lambda. In the event that the implementation method is an instance method, the first argument in the invocation signature will correspond to the receiver. interfaceMethodName:String Name of the method in the functional interface to which the lambda or method reference is being converted, represented as a String. interfaceMethodType:MethodType Type of the method in the functional interface to which the lambda or method reference is being converted, represented as a MethodType. implementation:MethodHandle The implementation method which should be called (with suitable adaptation of argument types, return types, and adjustment for captured arguments) when methods of the resulting functional interface instance are invoked. dynamicMethodType:MethodType The signature of the primary functional interface method after type variables are substituted with their instantiation from the capture site isSerializable:boolean Should the lambda be made serializable? If set, either the target type or one of the additional SAM types must extend `Serializable`. altInterfaces:Class<?>[] Additional interfaces which the lambda object should implement. altMethods:MethodType[] Method types for additional signatures to be implemented by invoking the implementation method Exceptions LambdaConversionException: If any of the meta-factory protocol invariants are violated

pack-priv AbstractValidatingLambdaMetafactory(MethodHandles.Lookup caller, MethodType factoryType, String interfaceMethodName, MethodType interfaceMethodType, MethodHandle implementation, MethodType dynamicMethodType, boolean isSerializable, Class<?>[] altInterfaces, MethodType[] altMethods) throws LambdaConversionException

Meta-factory constructor.

Parameters

caller:MethodHandles.Lookup: Stacked automatically by VM; represents a lookup context with the accessibility privileges of the caller.
factoryType:MethodType: Stacked automatically by VM; the signature of the invoked method, which includes the expected static type of the returned lambda object, and the static types of the captured arguments for the lambda. In the event that the implementation method is an instance method, the first argument in the invocation signature will correspond to the receiver.
interfaceMethodName:String: Name of the method in the functional interface to which the lambda or method reference is being converted, represented as a String.
interfaceMethodType:MethodType: Type of the method in the functional interface to which the lambda or method reference is being converted, represented as a MethodType.
implementation:MethodHandle: The implementation method which should be called (with suitable adaptation of argument types, return types, and adjustment for captured arguments) when methods of the resulting functional interface instance are invoked.
dynamicMethodType:MethodType: The signature of the primary functional interface method after type variables are substituted with their instantiation from the capture site
isSerializable:boolean: Should the lambda be made serializable? If set, either the target type or one of the additional SAM types must extend Serializable.
altInterfaces:Class<?>[]: Additional interfaces which the lambda object should implement.
altMethods:MethodType[]: Method types for additional signatures to be implemented by invoking the implementation method

Exceptions

LambdaConversionException:: If any of the meta-factory protocol invariants are violated

Method Detail

buildCallSite	back to summary
pack-priv abstract CallSite buildCallSite() throws LambdaConversionException Build the CallSite. Returns:CallSite a CallSite, which, when invoked, will return an instance of the functional interface

buildCallSite

back to summary

pack-priv abstract CallSite buildCallSite() throws LambdaConversionException

Build the CallSite.

Returns:CallSite: a CallSite, which, when invoked, will return an instance of the functional interface

checkDescriptor	back to summary
private void checkDescriptor(MethodType descriptor) throws LambdaConversionException Validate that the given descriptor's types are compatible with `dynamicMethodType`

isAdaptableTo	back to summary
private boolean isAdaptableTo(Class<?> fromType, Class<?> toType, boolean strict) Check type adaptability for parameter types. Parameters fromType:Class<?> Type to convert from toType:Class<?> Type to convert to strict:boolean If true, do strict checks, else allow that fromType may be parameterized Returns:boolean True if 'fromType' can be passed to an argument of 'toType'

isAdaptableTo

back to summary

private boolean isAdaptableTo(Class<?> fromType, Class<?> toType, boolean strict)

Check type adaptability for parameter types.

Parameters

fromType:Class<?>: Type to convert from
toType:Class<?>: Type to convert to
strict:boolean: If true, do strict checks, else allow that fromType may be parameterized

Returns:boolean

True if 'fromType' can be passed to an argument of 'toType'

isAdaptableToAsReturn	back to summary
private boolean isAdaptableToAsReturn(Class<?> fromType, Class<?> toType) Check type adaptability for return types -- special handling of void type) and parameterized fromType Returns:boolean True if 'fromType' can be converted to 'toType'

isAdaptableToAsReturn

back to summary

private boolean isAdaptableToAsReturn(Class<?> fromType, Class<?> toType)

Check type adaptability for return types -- special handling of void type) and parameterized fromType

Returns:boolean: True if 'fromType' can be converted to 'toType'

isAdaptableToAsReturnStrict	back to summary
private boolean isAdaptableToAsReturnStrict(Class<?> fromType, Class<?> toType)

validateMetafactoryArgs	back to summary
pack-priv void validateMetafactoryArgs() throws LambdaConversionException Check the meta-factory arguments for errors Exceptions LambdaConversionException: if there are improper conversions

validateMetafactoryArgs

back to summary

pack-priv void validateMetafactoryArgs() throws LambdaConversionException

Check the meta-factory arguments for errors

Exceptions

LambdaConversionException:: if there are improper conversions

pack-priv abstract Class AbstractValidatingLambdaMetafactory

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Field Detail

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