Package org.codehaus.groovy.runtime
Class CurriedClosure<V>
java.lang.Object
groovy.lang.GroovyObjectSupport
groovy.lang.Closure<V>
org.codehaus.groovy.runtime.CurriedClosure<V>
- All Implemented Interfaces:
GroovyCallable<V>,GroovyObject,java.io.Serializable,java.lang.Cloneable,java.lang.Runnable,java.util.concurrent.Callable<V>
public final class CurriedClosure<V> extends Closure<V>
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
- See Also:
- Serialized Form
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Field Summary
Fields inherited from class groovy.lang.Closure
DELEGATE_FIRST, DELEGATE_ONLY, DONE, IDENTITY, maximumNumberOfParameters, OWNER_FIRST, OWNER_ONLY, parameterTypes, SKIP, TO_SELF -
Constructor Summary
Constructors Constructor Description CurriedClosure(int index, Closure<V> uncurriedClosure, java.lang.Object... arguments)Creates the curried closure.CurriedClosure(Closure<V> uncurriedClosure, java.lang.Object... arguments) -
Method Summary
Modifier and Type Method Description java.lang.Objectclone()java.lang.ObjectgetDelegate()java.lang.Class[]getParameterTypes()intgetResolveStrategy()Gets the strategy which the closure uses to resolve methods and propertiesjava.lang.Object[]getUncurriedArguments(java.lang.Object... arguments)voidsetDelegate(java.lang.Object delegate)Allows the delegate to be changed such as when performing markup buildingvoidsetResolveStrategy(int resolveStrategy)Sets the strategy which the closure uses to resolve property references and methods.Methods inherited from class groovy.lang.Closure
andThen, andThenSelf, andThenSelf, asWritable, call, call, call, compose, composeSelf, composeSelf, curry, curry, dehydrate, getDirective, getMaximumNumberOfParameters, getOwner, getProperty, getThisObject, isCase, leftShift, leftShift, memoize, memoizeAtLeast, memoizeAtMost, memoizeBetween, ncurry, ncurry, rcurry, rcurry, rehydrate, rightShift, run, setDirective, setProperty, throwRuntimeException, trampoline, trampolineMethods inherited from class groovy.lang.GroovyObjectSupport
getMetaClass, setMetaClassMethods inherited from class java.lang.Object
equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitMethods inherited from interface groovy.lang.GroovyObject
invokeMethod
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Constructor Details
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CurriedClosure
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 injectedarguments- the supplied parameters
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CurriedClosure
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Method Details
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getUncurriedArguments
public java.lang.Object[] getUncurriedArguments(java.lang.Object... arguments) -
setDelegate
public void setDelegate(java.lang.Object delegate)Description copied from class:ClosureAllows the delegate to be changed such as when performing markup building- Overrides:
setDelegatein classClosure<V>- Parameters:
delegate- the new delegate
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getDelegate
public java.lang.Object getDelegate()- Overrides:
getDelegatein classClosure<V>- Returns:
- the delegate Object to which method calls will go which is typically the outer class when the closure is constructed
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setResolveStrategy
public void setResolveStrategy(int resolveStrategy)Description copied from class:ClosureSets the strategy which the closure uses to resolve property references and methods. The default is Closure.OWNER_FIRST- Overrides:
setResolveStrategyin classClosure<V>- Parameters:
resolveStrategy- The resolve strategy to set- See Also:
Closure.DELEGATE_FIRST,Closure.DELEGATE_ONLY,Closure.OWNER_FIRST,Closure.OWNER_ONLY,Closure.TO_SELF
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getResolveStrategy
public int getResolveStrategy()Description copied from class:ClosureGets the strategy which the closure uses to resolve methods and properties- Overrides:
getResolveStrategyin classClosure<V>- Returns:
- The resolve strategy
- See Also:
Closure.DELEGATE_FIRST,Closure.DELEGATE_ONLY,Closure.OWNER_FIRST,Closure.OWNER_ONLY,Closure.TO_SELF
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clone
public java.lang.Object clone() -
getParameterTypes
public java.lang.Class[] getParameterTypes()- Overrides:
getParameterTypesin classClosure<V>- Returns:
- the parameter types of the longest doCall method of this closure
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