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, Serializable, Cloneable, Runnable, 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

- - ### 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 and Description
    `CurriedClosure(Closure<V> uncurriedClosure, Object... arguments)`
    `CurriedClosure(int index, Closure<V> uncurriedClosure, Object... arguments)` Creates the curried closure.

  - ### Method Summary

    All Methods Instance Methods Concrete Methods
    Modifier and Type | Method and Description
    --- | ---
    `Object` | `clone()`
    `Object` | `getDelegate()`
    `Class[]` | `getParameterTypes()`
    `int` | `getResolveStrategy()` Gets the strategy which the closure uses to resolve methods and properties
    `Object[]` | `getUncurriedArguments(Object... arguments)`
    `void` | `setDelegate(Object delegate)` Allows the delegate to be changed such as when performing markup building
    `void` | `setResolveStrategy(int resolveStrategy)` Sets the strategy which the closure uses to resolve property references and methods.

    - ### Methods inherited from class groovy.lang.Closure

      `asWritable, call, call, call, 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, trampoline`

    - ### Methods inherited from class groovy.lang.GroovyObjectSupport

      `getMetaClass, invokeMethod, setMetaClass`

    - ### Methods inherited from class java.lang.Object

      `equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

- - ### Constructor Detail

    - #### CurriedClosure

          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

    - #### CurriedClosure

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

  - ### Method Detail

    - #### getUncurriedArguments

          public Object[] getUncurriedArguments(Object... arguments)

    - #### setDelegate

          public void setDelegate(Object delegate)

      Description copied from class: `Closure`
      Allows the delegate to be changed such as when performing markup building
      Overrides:
        `setDelegate` in class `Closure<V>`
      Parameters:
        `delegate` - the new delegate

    - #### getDelegate

          public Object getDelegate()

      Overrides:
        `getDelegate` in class `Closure<V>`
      Returns:
        the delegate Object to which method calls will go which is typically the outer class when the closure is constructed

    - #### setResolveStrategy

          public void setResolveStrategy(int resolveStrategy)

      Description copied from class: `Closure`
      Sets the strategy which the closure uses to resolve property references and methods. The default is Closure.OWNER_FIRST
      Overrides:
        `setResolveStrategy` in class `Closure<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`

    - #### getResolveStrategy

          public int getResolveStrategy()

      Description copied from class: `Closure`
      Gets the strategy which the closure uses to resolve methods and properties
      Overrides:
        `getResolveStrategy` in class `Closure<V>`
      Returns:
        The resolve strategy
      See Also:
        `Closure.DELEGATE_FIRST`, `Closure.DELEGATE_ONLY`, `Closure.OWNER_FIRST`, `Closure.OWNER_ONLY`, `Closure.TO_SELF`

    - #### clone

          public Object clone()

      Overrides:
        `clone` in class `Closure<V>`

    - #### getParameterTypes

          public Class[] getParameterTypes()

      Overrides:
        `getParameterTypes` in class `Closure<V>`
      Returns:
        the parameter types of the longest doCall method of this closure