com.aol.cyclops.internal.matcher2

Class ADTPredicateBuilder<T>

java.lang.Object

com.aol.cyclops.internal.matcher2.ADTPredicateBuilder<T>

Type Parameters:

T -

public class ADTPredicateBuilder<T>
extends java.lang.Object

Predicate Builder for Algebraic Data Types Can be used to recursively match on ADTs

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ADTPredicateBuilder.InternalADTPredicateBuilder<T>

Constructor Summary

Constructors

Constructor and Description
ADTPredicateBuilder()

Method Summary

Modifier and Type	Method and Description
<V> java.util.function.Predicate<V>	anyValues()
static <T> java.util.function.Predicate<T>	convertToPredicateTyped(java.lang.Object o)
<V> java.util.function.Predicate<V>	hasGuard(V... values) Generate a predicate that determines the provided values hold.
<V> java.util.function.Predicate<V>	isGuard(V... values)

Methods inherited from class java.lang.Object

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

Constructor Detail

ADTPredicateBuilder

public ADTPredicateBuilder()

Method Detail

anyValues

public final <V> java.util.function.Predicate<V> anyValues()

hasGuard

@SafeVarargs
public final <V> java.util.function.Predicate<V> hasGuard(V... values)

Generate a predicate that determines the provided values hold. Values can be comparison value, JDK 8 Predicate, or Hamcrest Matcher for each Element to match on. isType will attempt to match on the type of the supplied Case class. If it matches the Case class will be 'decomposed' via it's unapply method and the Case will then attempt to match on each of the elements that make up the Case class. If the Case class implements Decomposable, that interface and it's unapply method will be used. Otherwise in Extractors it is possible to register Decomposition Funcitons that will unapply Case classes from other sources (e.g. javaslang, jADT or even Scala). If no Decomposition Function has been registered, reflection will be used to call an unapply method on the Case class if it exists.

Parameters:

values - Matching rules for each element in the decomposed / unapplied user input

Returns:

A single Predicate encompassing supplied rules

See Also:

Extractors.decompose(), com.aol.cyclops.internal.matcher2.Extractors#registerDecompositionFunction

isGuard

@SafeVarargs
public final <V> java.util.function.Predicate<V> isGuard(V... values)

convertToPredicateTyped

public static <T> java.util.function.Predicate<T> convertToPredicateTyped(java.lang.Object o)