
org.javimmutable.collections.util.Curry Maven / Gradle / Ivy
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package org.javimmutable.collections.util;
import org.javimmutable.collections.Func1;
import org.javimmutable.collections.Func2;
import org.javimmutable.collections.Func3;
import org.javimmutable.collections.Func4;
/**
* Contains static factory methods to produce Curried versions of functions.
*/
public final class Curry
{
private Curry()
{
}
/**
* Produces a Curried Func1 that calls the provided Func4 passing it the fixed parameters
* param1-param3 along with the actual parameter to the apply() method as the fourth parameter.
*
* @param function
* @param param1
* @param param2
* @param param3
* @param
* @param
* @param
* @param
* @param
* @return
*/
public static Func1 of(final Func4 function,
final P1 param1,
final P2 param2,
final P3 param3)
{
return new Func1()
{
@Override
public R apply(P4 value)
{
return function.apply(param1, param2, param3, value);
}
};
}
/**
* Produces a Curried Func1 that calls the provided Func3 passing it the fixed parameters
* param1-param2 along with the actual parameter to the apply() method as the third parameter.
*
* @param function
* @param param1
* @param param2
* @param
* @param
* @param
* @param
* @return
*/
public static Func1 of(final Func3 function,
final P1 param1,
final P2 param2)
{
return new Func1()
{
@Override
public R apply(P3 value)
{
return function.apply(param1, param2, value);
}
};
}
/**
* Produces a Curried Func1 that calls the provided Func2 passing it the fixed parameter
* param1 along with the actual parameter to the apply() method as the second parameter.
*
* @param function
* @param param1
* @param
* @param
* @param
* @return
*/
public static Func1 of(final Func2 function,
final P1 param1)
{
return new Func1()
{
@Override
public R apply(P2 value)
{
return function.apply(param1, value);
}
};
}
/**
* Produces a Curried Func3 that calls the provided Func4 passing it the fixed parameter
* param1 along with the actual parameters to the apply() method.
*
* @param param1
* @param function
* @return
*/
public static Func3 func3(final P1 param1,
final Func4 function)
{
return new Func3()
{
@Override
public R apply(P2 param2,
P3 param3,
P4 param4)
{
return function.apply(param1, param2, param3, param4);
}
};
}
/**
* Produces a Curried Func2 that calls the provided Func3 passing it the fixed parameter
* param1 along with the actual parameters to the apply() method.
*
* @param param1
* @param function
* @return
*/
public static Func2 func2(final P1 param1,
final Func3 function)
{
return new Func2()
{
@Override
public R apply(P2 param2,
P3 param3)
{
return function.apply(param1, param2, param3);
}
};
}
/**
* Produces a Curried Func3 that calls the provided Func4 passing it the fixed parameter
* param1 along with the actual parameters to the apply() method.
*
* @param param1
* @param function
* @return
*/
public static Func2 func2(final P1 param1,
final P2 param2,
final Func4 function)
{
return new Func2()
{
@Override
public R apply(P3 param3,
P4 param4)
{
return function.apply(param1, param2, param3, param4);
}
};
}
/**
* Produces a Curried Func1 that calls the provided Func2 passing it the fixed parameter
* param1 along with the actual parameters to the apply() method.
*
* @param param1
* @param function
* @return
*/
public static Func1 func1(final P1 param1,
final Func2 function)
{
return of(function, param1);
}
/**
* Produces a Curried Func1 that calls the provided Func3 passing it the fixed parameters
* param1 and param2 along with the actual parameters to the apply() method.
*
* @param param1
* @param function
* @return
*/
public static Func1 func1(final P1 param1,
final P2 param2,
final Func3 function)
{
return of(function, param1, param2);
}
/**
* Produces a Curried Func1 that calls the provided Func4 passing it the fixed parameters
* param1 and param2 along with the actual parameters to the apply() method.
*
* @param param1
* @param function
* @return
*/
public static Func1 func1(final P1 param1,
final P2 param2,
final P3 param3,
final Func4 function)
{
return of(function, param1, param2, param3);
}
}
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