| 1 | package com.github.valid8j.pcond.experimentals.currying; | |
| 2 | ||
| 3 | import com.github.valid8j.pcond.core.printable.ParameterizedFunctionFactory; | |
| 4 | import com.github.valid8j.pcond.core.printable.ParameterizedPredicateFactory; | |
| 5 | import com.github.valid8j.pcond.core.printable.PrintablePredicateFactory; | |
| 6 | import com.github.valid8j.pcond.experimentals.currying.context.CurriedContext; | |
| 7 | import com.github.valid8j.pcond.experimentals.currying.context.CurriedContextUtils; | |
| 8 | import com.github.valid8j.pcond.forms.Printables; | |
| 9 | import com.github.valid8j.pcond.internals.InternalUtils; | |
| 10 | ||
| 11 | import java.util.Collection; | |
| 12 | import java.util.function.Function; | |
| 13 | import java.util.function.Predicate; | |
| 14 | import java.util.stream.Stream; | |
| 15 | ||
| 16 | import static com.github.valid8j.pcond.internals.InternalUtils.formatObject; | |
| 17 | ||
| 18 | /** | |
| 19 | * A class that collects methods to create functions and predicates in experimental stage. | |
| 20 | */ | |
| 21 | public enum CurriedFunctions { | |
| 22 | ; | |
| 23 | ||
| 24 | /** | |
| 25 | * This function is used to construct a function which replaces 'nested loop' in a usual programming. | |
| 26 | * | |
| 27 | * @param inner A collection for the "inner loop". | |
| 28 | * @return A function to construct a nested structure. | |
| 29 | */ | |
| 30 | public static Function<Stream<?>, Stream<CurriedContext>> nest(Collection<?> inner) { | |
| 31 |
3
1. lambda$nest$0 : replaced return value with "" for com/github/valid8j/pcond/experimentals/currying/CurriedFunctions::lambda$nest$0 → KILLED 2. lambda$nest$1 : replaced return value with Stream.empty for com/github/valid8j/pcond/experimentals/currying/CurriedFunctions::lambda$nest$1 → KILLED 3. nest : replaced return value with null for com/github/valid8j/pcond/experimentals/currying/CurriedFunctions::nest → KILLED |
return Printables.function(() -> "nest" + InternalUtils.formatObject(inner), (Stream<?> stream) -> CurriedContextUtils.nest(stream, inner)); |
| 32 | } | |
| 33 | ||
| 34 | /** | |
| 35 | * Returns a converter function for a stream. | |
| 36 | * The function converts a stream of objects into and returns a stream of contexts each of which hols a value | |
| 37 | * from the original stream. | |
| 38 | * | |
| 39 | * @return A function to convert an object stream into context stream. | |
| 40 | * @see CurriedContext | |
| 41 | */ | |
| 42 | public static Function<Stream<?>, Stream<CurriedContext>> toCurriedContextStream() { | |
| 43 |
2
1. lambda$toCurriedContextStream$2 : replaced return value with "" for com/github/valid8j/pcond/experimentals/currying/CurriedFunctions::lambda$toCurriedContextStream$2 → KILLED 2. toCurriedContextStream : replaced return value with null for com/github/valid8j/pcond/experimentals/currying/CurriedFunctions::toCurriedContextStream → KILLED |
return Printables.function(() -> "toCurriedContextStream", CurriedContextUtils::toCurriedContextStream); |
| 44 | } | |
| 45 | ||
| 46 | /** | |
| 47 | * Returns a function to convert a value into a context that holds the original value. | |
| 48 | * | |
| 49 | * @param <T> The type of the original value. | |
| 50 | * @return A function to convert a value into a context. | |
| 51 | */ | |
| 52 | public static <T> Function<T, CurriedContext> toCurriedContext() { | |
| 53 |
2
1. lambda$toCurriedContext$3 : replaced return value with "" for com/github/valid8j/pcond/experimentals/currying/CurriedFunctions::lambda$toCurriedContext$3 → KILLED 2. toCurriedContext : replaced return value with null for com/github/valid8j/pcond/experimentals/currying/CurriedFunctions::toCurriedContext → KILLED |
return Printables.function(() -> "toCurriedContext", CurriedContextUtils::toCurriedContext); |
| 54 | } | |
| 55 | ||
| 56 | /** | |
| 57 | * Creates a context function that tests the value at the specified index using the given predicate. | |
| 58 | * | |
| 59 | * @param predicate_ A predicate with which the value is tested. | |
| 60 | * @param argIndex An index to specify a value in the context. | |
| 61 | * @param <T> An expected type of value to be tested. | |
| 62 | * @return A new predicate to test a value in a context. | |
| 63 | */ | |
| 64 | public static <T> Predicate<CurriedContext> toCurriedContextPredicate(Predicate<T> predicate_, int argIndex) { | |
| 65 |
1
1. toCurriedContextPredicate : replaced return value with null for com/github/valid8j/pcond/experimentals/currying/CurriedFunctions::toCurriedContextPredicate → KILLED |
return PrintablePredicateFactory.variableBundlePredicate(predicate_, argIndex); |
| 66 | } | |
| 67 | ||
| 68 | /** | |
| 69 | * Converts a predicate to a context predicate which tests the first value in a context | |
| 70 | * using the `predicate`. | |
| 71 | * | |
| 72 | * @param predicate A predicate to be converted | |
| 73 | * @param <T> An expected type of the input value. | |
| 74 | * @return A context predicate. | |
| 75 | */ | |
| 76 | public static <T> Predicate<CurriedContext> toCurriedContextPredicate(Predicate<T> predicate) { | |
| 77 |
1
1. toCurriedContextPredicate : replaced return value with null for com/github/valid8j/pcond/experimentals/currying/CurriedFunctions::toCurriedContextPredicate → KILLED |
return toCurriedContextPredicate(predicate, 0); |
| 78 | } | |
| 79 | ||
| 80 | /** | |
| 81 | * Converts a curried function which results in a boolean value into a predicate. | |
| 82 | * | |
| 83 | * @param curriedFunction A curried function to be converted. | |
| 84 | * @param orderArgs An array to specify the order in which values in the context are applied to the function. | |
| 85 | * @return A predicate converted from the given curried function. | |
| 86 | */ | |
| 87 | public static Predicate<CurriedContext> toCurriedContextPredicate(CurriedFunction<Object, Object> curriedFunction, int... orderArgs) { | |
| 88 |
1
1. toCurriedContextPredicate : replaced return value with null for com/github/valid8j/pcond/experimentals/currying/CurriedFunctions::toCurriedContextPredicate → KILLED |
return CurriedContextUtils.toContextPredicate(curriedFunction, orderArgs); |
| 89 | } | |
| 90 | ||
| 91 | /** | |
| 92 | * Returns a builder for a factory to create a predicate. | |
| 93 | * The factory accepts an argument to create a new predicate. | |
| 94 | * With this method, you can create predicates with different values. | |
| 95 | * | |
| 96 | * Suppose, you are about to create a predicate that tests a given string starts with `"hello"`. | |
| 97 | * At the same time, you also want to create a predicate that checks the value using `"こんにちは"`. | |
| 98 | * You can do it with the factory built by the returned value of this method. | |
| 99 | * | |
| 100 | * @param name The name of the predicate. It will be followed by the value passed to the factory in the `pcond`'s output. | |
| 101 | * @param <T> The expected type of the value to be tested by the final predicate. | |
| 102 | * @return A builder to create a predicate factory. | |
| 103 | */ | |
| 104 | public static <T> ParameterizedPredicateFactory.Builder<T> parameterizedPredicate(String name) { | |
| 105 |
1
1. parameterizedPredicate : replaced return value with null for com/github/valid8j/pcond/experimentals/currying/CurriedFunctions::parameterizedPredicate → KILLED |
return new ParameterizedPredicateFactory.Builder<T>().name(name); |
| 106 | } | |
| 107 | ||
| 108 | /** | |
| 109 | * Returns a builder for a factory to create a function. | |
| 110 | * | |
| 111 | * @param name The name of the function. It will be followed by the value passed to the factory in the `pcond`'s output. | |
| 112 | * @param <T> The expected type of the input value to the final function. | |
| 113 | * @param <R> The expected type of the output value of the final function. | |
| 114 | * @return A builder to create a function factory. | |
| 115 | * @see CurriedFunctions#parameterizedPredicate(String) | |
| 116 | */ | |
| 117 | public static <T, R> ParameterizedFunctionFactory.Builder<T, R> parameterizedFunction(String name) { | |
| 118 |
1
1. parameterizedFunction : replaced return value with null for com/github/valid8j/pcond/experimentals/currying/CurriedFunctions::parameterizedFunction → KILLED |
return new ParameterizedFunctionFactory.Builder<T, R>().name(name); |
| 119 | } | |
| 120 | } | |
Mutations | ||
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1.1 2.2 3.3 |
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| 43 |
1.1 2.2 |
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| 53 |
1.1 2.2 |
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| 65 |
1.1 |
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| 77 |
1.1 |
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| 88 |
1.1 |
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| 105 |
1.1 |
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| 118 |
1.1 |