Package com.headius.invokebinder.transform

Class Collect

java.lang.Object

com.headius.invokebinder.transform.Transform

com.headius.invokebinder.transform.Collect

public class Collect
extends Transform

A filter that takes multiple arguments and replaces them with zero or one argument of a new type. Equivalent call: MethodHandle.asCollector(Class, int) or MethodHandles.collectArguments

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private static class	Collect.Permutes

Field Summary

Fields

Modifier and Type	Field	Description
private final MethodHandle	collector
private final int	count
private final int	index
private final Class<?>	resultType
private final MethodType	source

Constructor Summary

Constructors

Constructor	Description
Collect(MethodType source, int index, int count, Class<?> resultType)
Collect(MethodType source, int index, int count, Class<?> resultType, MethodHandle collector)
Collect(MethodType source, int index, Class<?> resultType)
Collect(MethodType source, int index, Class<?> resultType, MethodHandle collector)

Method Summary

Modifier and Type	Method	Description
private void	assertTypesAreCompatible()
private Collect.Permutes	buildPermutes(MethodType source, MethodType target)
MethodType	down(MethodType type)	Apply this transform downward from an incoming MethodType, producing a new type.
private boolean	onlyTail()
private Binder	preparePermuteBinder(Collect.Permutes permutes)
String	toJava(MethodType incoming)	Return a Java code representation of this transform.
String	toString()	Return a string representation of this transform.
MethodHandle	up(MethodHandle target)	Apply this transform upward from the given MethodHandle, producing a new handle.

Methods inherited from class com.headius.invokebinder.transform.Transform

buildClassArgument, buildClassArguments, buildClassCast, buildPrimitiveJava, generateMethodType

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details

source

private final MethodType source

index

private final int index

count

private final int count

resultType

private final Class<?> resultType

collector

private final MethodHandle collector

Constructor Details

Collect

public Collect(MethodType source,
 int index,
 Class<?> resultType)

Collect

public Collect(MethodType source,
 int index,
 Class<?> resultType,
 MethodHandle collector)

Collect

public Collect(MethodType source,
 int index,
 int count,
 Class<?> resultType)

Collect

public Collect(MethodType source,
 int index,
 int count,
 Class<?> resultType,
 MethodHandle collector)

Method Details

up

public MethodHandle up(MethodHandle target)

Description copied from class: Transform

Apply this transform upward from the given MethodHandle, producing a new handle.

Specified by:

up in class Transform

Parameters:

target - the target handle

Returns:

the adapted handle

preparePermuteBinder

private Binder preparePermuteBinder(Collect.Permutes permutes)

down

public MethodType down(MethodType type)

Description copied from class: Transform

Apply this transform downward from an incoming MethodType, producing a new type.

Specified by:

down in class Transform

Parameters:

type - the source type

Returns:

the new type

assertTypesAreCompatible

private void assertTypesAreCompatible()

toString

public String toString()

Description copied from class: Transform

Return a string representation of this transform.

Specified by:

toString in class Transform

Returns:

a string representation of this transform

toJava

public String toJava(MethodType incoming)

Description copied from class: Transform

Return a Java code representation of this transform.

Specified by:

toJava in class Transform

Returns:

a Java code representation of this transform.

onlyTail

private boolean onlyTail()

buildPermutes

private Collect.Permutes buildPermutes(MethodType source,
 MethodType target)