[Java] Class CurriedClosure<V>

org.codehaus.groovy.runtime.CurriedClosure

public final class CurriedClosure<V>
extends Closure

A wrapper for Closure to support currying. Normally used only internally through the curry(), rcurry() or ncurry() methods on Closure. Typical usages:

 // normal usage
 def unitAdder = { first, second, unit -> "${first + second} $unit" }
 assert unitAdder(10, 15, "minutes") == "25 minutes"
 assert unitAdder.curry(60)(15, "minutes") == "75 minutes"
 def minuteAdder = unitAdder.rcurry("minutes")
 assert minuteAdder(15, 60) == "75 minutes"

 // explicit creation
 import org.codehaus.groovy.runtime.CurriedClosure
 assert new CurriedClosure(unitAdder, 45)(15, "minutes") == "60 minutes"
 assert new CurriedClosure(unitAdder, "six", "ty")("minutes") == "sixty minutes"

Notes:

Caters for Groovy's lazy (rcurry) and eager (ncurry) calculation of argument position

Inherited fields
Fields inherited from class	Fields
`class Closure`	`OWNER_FIRST, DELEGATE_FIRST, OWNER_ONLY, DELEGATE_ONLY, TO_SELF, DONE, SKIP, IDENTITY`

Constructor Summary

Constructors
Constructor and description
`CurriedClosure (int index, Closure<V> uncurriedClosure, Object arguments)` Creates the curried closure.
`CurriedClosure (Closure<V> uncurriedClosure, Object arguments)`

Methods Summary

Methods
Type Params	Return Type	Name and description
	`public Object`	`clone()`
	`public Object`	`getDelegate()`
	`public Class[]`	`getParameterTypes()`
	`public int`	`getResolveStrategy()`
	`public Object[]`	`getUncurriedArguments(Object arguments)`
	`public void`	`setDelegate(Object delegate)`
	`public void`	`setResolveStrategy(int resolveStrategy)`

Inherited Methods Summary

Inherited Methods
Methods inherited from class	Name
`class Closure`	run, getProperty, clone, getParameterTypes, setProperty, getOwner, setDelegate, call, call, call, andThen, memoize, getDelegate, leftShift, leftShift, dehydrate, getResolveStrategy, ncurry, ncurry, rightShift, memoizeAtLeast, rehydrate, setDirective, trampoline, trampoline, getDirective, isCase, curry, curry, asWritable, rcurry, rcurry, memoizeAtMost, memoizeBetween, setResolveStrategy, getThisObject, getMaximumNumberOfParameters, andThenSelf, andThenSelf, composeSelf, composeSelf, compose, getMetaClass, setMetaClass, wait, wait, wait, equals, toString, hashCode, getClass, notify, notifyAll, invokeMethod

Constructor Detail

public CurriedClosure(int index, Closure<V> uncurriedClosure, Object arguments)

Creates the curried closure.

Parameters:: index - the position where the parameters should be injected (-ve for lazy); uncurriedClosure - the closure to be called after the curried parameters are injected; arguments - the supplied parameters

public CurriedClosure(Closure<V> uncurriedClosure, Object arguments)

Method Detail

@SuppressWarnings("unchecked") public Object clone()

public Object getDelegate()

public Class[] getParameterTypes()

public int getResolveStrategy()

public Object[] getUncurriedArguments(Object arguments)

public void setDelegate(Object delegate)

public void setResolveStrategy(int resolveStrategy)

© 2003-2020 The Apache Software Foundation
Licensed under the Apache license.
https://docs.groovy-lang.org/3.0.7/html/gapi/org/codehaus/groovy/runtime/CurriedClosure.html