io.virtdata.api.composers.ComposerForIntFunction Maven / Gradle / Ivy

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With inspiration from other libraries
There is a newer version: 2.12.15
package io.virtdata.api.composers;

import io.virtdata.api.FunctionType;

import java.util.function.*;

public class ComposerForIntFunction implements FunctionComposer> {

    private final IntFunction inner;

    public ComposerForIntFunction(IntFunction inner) {
        this.inner = inner;
    }

    @Override
    public FunctionComposer andThen(Object outer) {
        FunctionType functionType =FunctionType.valueOf(outer);
        switch (functionType) {

            case long_long:
                final IntToLongFunction f1 =
                        (int i) ->
                                ((LongUnaryOperator)outer).applyAsLong( (((IntFunction)inner).apply(i)).intValue() );
                return new ComposerForIntToLongFunction(f1);
            case long_T:
                final IntFunction f2 =
                        (int i) ->
                                ((LongFunction)outer).apply(((IntFunction)inner).apply(i));
                return new ComposerForIntFunction(f2);
            case long_int:
                final IntUnaryOperator f3 =
                        (int i) ->
                                ((LongToIntFunction)outer).applyAsInt(((IntFunction)inner).apply(i));
                return new ComposerForIntUnaryOperator(f3);
            case long_double:
                final IntToDoubleFunction f4 =
                        (int i) ->
                                ((LongToDoubleFunction)outer).applyAsDouble(((IntFunction)inner).apply(i));
                return new ComposerForIntToDoubleFunction(f4);
            case int_int:
                final IntUnaryOperator f5 =
                        (int i) ->
                                ((IntUnaryOperator)outer).applyAsInt(((IntFunction)inner).apply(i));
                return new ComposerForIntUnaryOperator(f5);
            case R_T:
                final IntFunction f6 =
                        (int i) ->
                                ((IntFunction)outer).apply(((IntFunction)inner).apply(i));
                return new ComposerForIntFunction(f6);
            case int_long:
                final IntToLongFunction f7 =
                        (int i) -> ((IntToLongFunction)outer).applyAsLong(((IntFunction)inner).apply(i));
                return new ComposerForIntToLongFunction(f7);
            case int_double:
                final IntToDoubleFunction f8 =
                        (int i) -> ((IntToDoubleFunction)outer).applyAsDouble(((IntFunction)inner).apply(i));
                return new ComposerForIntToDoubleFunction(f8);
            case int_T:
                final IntFunction f9 =
                        (int i) -> ((IntFunction)outer).apply(((IntFunction)inner).apply(i));
                return new ComposerForIntFunction(f9);
            case double_double:
                final IntToDoubleFunction f10 =
                        (int i) -> ((DoubleUnaryOperator)outer).applyAsDouble(((IntFunction)inner).apply(i));
                return new ComposerForIntToDoubleFunction(f10);
            case double_long:
                final IntToLongFunction f11 =
                        (int i) -> ((DoubleToLongFunction)outer).applyAsLong(((IntFunction)inner).apply(i));
                return new ComposerForIntToLongFunction(f11);
            case double_int:
                final IntUnaryOperator f12 =
                        (int i) -> ((DoubleToIntFunction)outer).applyAsInt(((IntFunction)inner).apply(i));
                return new ComposerForIntUnaryOperator(f12);

            case double_T:
                final IntFunction f13 =
                        (int i) -> ((DoubleFunction)outer).apply(((IntFunction)inner).apply(i));
                return new ComposerForIntFunction(f13);
            default:
                throw new RuntimeException(functionType + " is not recognized");

        }
    }

    @Override
    public Object getFunctionObject() {
        return inner;
    }

}