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package com.firefly.utils.function;
/**
* Utility class for the Action interfaces.
*/
public final class Actions {
private Actions() {
throw new IllegalStateException("No instances!");
}
@SuppressWarnings("unchecked")
public static EmptyAction empty() {
return EMPTY_ACTION;
}
@SuppressWarnings("rawtypes")
private static final EmptyAction EMPTY_ACTION = new EmptyAction();
private static final class EmptyAction implements
Action0,
Action1,
Action2,
Action3,
Action4,
Action5,
Action6,
Action7,
Action8,
Action9,
ActionN {
EmptyAction() {
}
@Override
public void call() {
}
@Override
public void call(T0 t1) {
}
@Override
public void call(T0 t1, T1 t2) {
}
@Override
public void call(T0 t1, T1 t2, T2 t3) {
}
@Override
public void call(T0 t1, T1 t2, T2 t3, T3 t4) {
}
@Override
public void call(T0 t1, T1 t2, T2 t3, T3 t4, T4 t5) {
}
@Override
public void call(T0 t1, T1 t2, T2 t3, T3 t4, T4 t5, T5 t6) {
}
@Override
public void call(T0 t1, T1 t2, T2 t3, T3 t4, T4 t5, T5 t6, T6 t7) {
}
@Override
public void call(T0 t1, T1 t2, T2 t3, T3 t4, T4 t5, T5 t6, T6 t7, T7 t8) {
}
@Override
public void call(T0 t1, T1 t2, T2 t3, T3 t4, T4 t5, T5 t6, T6 t7, T7 t8, T8 t9) {
}
@Override
public void call(Object... args) {
}
}
/**
* Converts an {@link Action0} to a function that calls the action and returns {@code null}.
*
* @param action
* the {@link Action0} to convert
* @return a {@link Func0} that calls {@code action} and returns {@code null}
*/
public static Func0 toFunc(final Action0 action) {
return toFunc(action, (Void) null);
}
/**
* Converts an {@link Action1} to a function that calls the action and returns {@code null}.
*
* @param action
* the {@link Action1} to convert
* @return a {@link Func1} that calls {@code action} and returns {@code null}
*/
public static Func1 toFunc(final Action1 action) {
return toFunc(action, (Void) null);
}
/**
* Converts an {@link Action2} to a function that calls the action and returns {@code null}.
*
* @param action
* the {@link Action2} to convert
* @return a {@link Func2} that calls {@code action} and returns {@code null}
*/
public static Func2 toFunc(final Action2 action) {
return toFunc(action, (Void) null);
}
/**
* Converts an {@link Action3} to a function that calls the action and returns {@code null}.
*
* @param action
* the {@link Action3} to convert
* @return a {@link Func3} that calls {@code action} and returns {@code null}
*/
public static Func3 toFunc(final Action3 action) {
return toFunc(action, (Void) null);
}
/**
* Converts an {@link Action4} to a function that calls the action and returns {@code null}.
*
* @param action
* the {@link Action4} to convert
* @return a {@link Func4} that calls {@code action} and returns {@code null}
*/
public static Func4 toFunc(final Action4 action) {
return toFunc(action, (Void) null);
}
/**
* Converts an {@link Action5} to a function that calls the action and returns {@code null}.
*
* @param action
* the {@link Action5} to convert
* @return a {@link Func5} that calls {@code action} and returns {@code null}
*/
public static Func5 toFunc(
final Action5 action) {
return toFunc(action, (Void) null);
}
/**
* Converts an {@link Action6} to a function that calls the action and returns {@code null}.
*
* @param action
* the {@link Action6} to convert
* @return a {@link Func6} that calls {@code action} and returns {@code null}
*/
public static Func6 toFunc(
final Action6 action) {
return toFunc(action, (Void) null);
}
/**
* Converts an {@link Action7} to a function that calls the action and returns {@code null}.
*
* @param action
* the {@link Action7} to convert
* @return a {@link Func7} that calls {@code action} and returns {@code null}
*/
public static Func7 toFunc(
final Action7 action) {
return toFunc(action, (Void) null);
}
/**
* Converts an {@link Action8} to a function that calls the action and returns {@code null}.
*
* @param action
* the {@link Action8} to convert
* @return a {@link Func8} that calls {@code action} and returns {@code null}
*/
public static Func8 toFunc(
final Action8 action) {
return toFunc(action, (Void) null);
}
/**
* Converts an {@link Action9} to a function that calls the action and returns {@code null}.
*
* @param action
* the {@link Action9} to convert
* @return a {@link Func9} that calls {@code action} and returns {@code null}
*/
public static Func9 toFunc(
final Action9 action) {
return toFunc(action, (Void) null);
}
/**
* Converts an {@link ActionN} to a function that calls the action and returns {@code null}.
*
* @param action
* the {@link ActionN} to convert
* @return a {@link FuncN} that calls {@code action} and returns {@code null}
*/
public static FuncN toFunc(
final ActionN action) {
return toFunc(action, (Void) null);
}
/**
* Converts an {@link Action0} to a function that calls the action and returns a specified value.
*
* @param action
* the {@link Action0} to convert
* @param result
* the value to return from the function call
* @return a {@link Func0} that calls {@code action} and returns {@code result}
*/
public static Func0 toFunc(final Action0 action, final R result) {
return new Func0() {
@Override
public R call() {
action.call();
return result;
}
};
}
/**
* Converts an {@link Action1} to a function that calls the action and returns a specified value.
*
* @param action
* the {@link Action1} to convert
* @param result
* the value to return from the function call
* @return a {@link Func1} that calls {@code action} and returns {@code result}
*/
public static Func1 toFunc(final Action1 action, final R result) {
return new Func1() {
@Override
public R call(T1 t1) {
action.call(t1);
return result;
}
};
}
/**
* Converts an {@link Action2} to a function that calls the action and returns a specified value.
*
* @param action
* the {@link Action2} to convert
* @param result
* the value to return from the function call
* @return a {@link Func2} that calls {@code action} and returns {@code result}
*/
public static Func2 toFunc(final Action2 action, final R result) {
return new Func2() {
@Override
public R call(T1 t1, T2 t2) {
action.call(t1, t2);
return result;
}
};
}
/**
* Converts an {@link Action3} to a function that calls the action and returns a specified value.
*
* @param action
* the {@link Action3} to convert
* @param result
* the value to return from the function call
* @return a {@link Func3} that calls {@code action} and returns {@code result}
*/
public static Func3 toFunc(final Action3 action, final R result) {
return new Func3() {
@Override
public R call(T1 t1, T2 t2, T3 t3) {
action.call(t1, t2, t3);
return result;
}
};
}
/**
* Converts an {@link Action4} to a function that calls the action and returns a specified value.
*
* @param action
* the {@link Action4} to convert
* @param result
* the value to return from the function call
* @return a {@link Func4} that calls {@code action} and returns {@code result}
*/
public static Func4 toFunc(final Action4 action, final R result) {
return new Func4() {
@Override
public R call(T1 t1, T2 t2, T3 t3, T4 t4) {
action.call(t1, t2, t3, t4);
return result;
}
};
}
/**
* Converts an {@link Action5} to a function that calls the action and returns a specified value.
*
* @param action
* the {@link Action5} to convert
* @param result
* the value to return from the function call
* @return a {@link Func5} that calls {@code action} and returns {@code result}
*/
public static Func5 toFunc(
final Action5 action, final R result) {
return new Func5() {
@Override
public R call(T1 t1, T2 t2, T3 t3, T4 t4, T5 t5) {
action.call(t1, t2, t3, t4, t5);
return result;
}
};
}
/**
* Converts an {@link Action6} to a function that calls the action and returns a specified value.
*
* @param action
* the {@link Action6} to convert
* @param result
* the value to return from the function call
* @return a {@link Func6} that calls {@code action} and returns {@code result}
*/
public static Func6 toFunc(
final Action6 action, final R result) {
return new Func6() {
@Override
public R call(T1 t1, T2 t2, T3 t3, T4 t4, T5 t5, T6 t6) {
action.call(t1, t2, t3, t4, t5, t6);
return result;
}
};
}
/**
* Converts an {@link Action7} to a function that calls the action and returns a specified value.
*
* @param action
* the {@link Action7} to convert
* @param result
* the value to return from the function call
* @return a {@link Func7} that calls {@code action} and returns {@code result}
*/
public static Func7 toFunc(
final Action7 action, final R result) {
return new Func7() {
@Override
public R call(T1 t1, T2 t2, T3 t3, T4 t4, T5 t5, T6 t6, T7 t7) {
action.call(t1, t2, t3, t4, t5, t6, t7);
return result;
}
};
}
/**
* Converts an {@link Action8} to a function that calls the action and returns a specified value.
*
* @param action
* the {@link Action8} to convert
* @param result
* the value to return from the function call
* @return a {@link Func8} that calls {@code action} and returns {@code result}
*/
public static Func8 toFunc(
final Action8 action, final R result) {
return new Func8() {
@Override
public R call(T1 t1, T2 t2, T3 t3, T4 t4, T5 t5, T6 t6, T7 t7, T8 t8) {
action.call(t1, t2, t3, t4, t5, t6, t7, t8);
return result;
}
};
}
/**
* Converts an {@link Action9} to a function that calls the action and returns a specified value.
*
* @param action
* the {@link Action9} to convert
* @param result
* the value to return from the function call
* @return a {@link Func9} that calls {@code action} and returns {@code result}
*/
public static Func9 toFunc(
final Action9 action, final R result) {
return new Func9() {
@Override
public R call(T1 t1, T2 t2, T3 t3, T4 t4, T5 t5, T6 t6, T7 t7, T8 t8, T9 t9) {
action.call(t1, t2, t3, t4, t5, t6, t7, t8, t9);
return result;
}
};
}
/**
* Converts an {@link ActionN} to a function that calls the action and returns a specified value.
*
* @param action
* the {@link ActionN} to convert
* @param result
* the value to return from the function call
* @return a {@link FuncN} that calls {@code action} and returns {@code result}
*/
public static FuncN toFunc(
final ActionN action, final R result) {
return new FuncN() {
@Override
public R call(Object... args) {
action.call(args);
return result;
}
};
}
}
