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Code Issues Releases Wiki Activity

Added runnable to Dummy

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This commit is contained in:
dragonmacher 2020-11-19 14:18:56 -05:00
parent c11d589514
commit 0097aabccf
1 changed files with 32 additions and 11 deletions
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43
Ghidra/Framework/Utility/src/main/java/utility/function/Dummy.java
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@ -62,20 +62,30 @@ public class Dummy {
}
/**
* Returns the given consumer object if it is not {@code null}. Otherwise, a {@link #consumer()}
* Creates a dummy runnable
* @return the runnable
*/
public static Runnable runnable() {
return () -> {
// no-op
};
}
/**
* Returns the given consumer object if it is not {@code null}. Otherwise, a {@link #consumer()}
* is returned. This is useful to avoid using {@code null}.
*
*
* @param c the consumer function to check for {@code null}
* @return a non-null consumer function
* @return a non-null consumer
*/
public static <T> Consumer<T> ifNull(Consumer<T> c) {
return c == null ? consumer() : c;
}
/**
* Returns the given callback object if it is not {@code null}. Otherwise, a {@link #callback()}
* Returns the given callback object if it is not {@code null}. Otherwise, a {@link #callback()}
* is returned. This is useful to avoid using {@code null}.
*
*
* @param c the callback function to check for {@code null}
* @return a non-null callback function
*/
@ -84,26 +94,37 @@ public class Dummy {
}
/**
* Returns the given function object if it is not {@code null}. Otherwise, a
* Returns the given function object if it is not {@code null}. Otherwise, a
* {@link #function()} is returned. This is useful to avoid using {@code null}.
*
*
* @param <T> the input type
* @param <R> the result type
* @param f the function to check for {@code null}
* @return a non-null callback function
* @return a non-null function
*/
public static <T, R> Function<T, R> ifNull(Function<T, R> f) {
return f == null ? function() : f;
}
/**
* Returns the given callback object if it is not {@code null}. Otherwise, a {@link #callback()}
* Returns the given callback object if it is not {@code null}. Otherwise, a {@link #callback()}
* is returned. This is useful to avoid using {@code null}.
*
*
* @param s the supplier function to check for {@code null}
* @return a non-null callback function
* @return a non-null supplier
*/
public static <T> Supplier<T> ifNull(Supplier<T> s) {
return s == null ? supplier() : s;
}
/**
* Returns the given runnable object if it is not {@code null}. Otherwise, a {@link #runnable()}
* is returned. This is useful to avoid using {@code null}.
*
* @param r the runnable function to check for {@code null}
* @return a non-null runnable
*/
public static Runnable ifNull(Runnable r) {
return r == null ? runnable() : r;
}
}