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package org.springblade.core.tool.support;
 
import org.springblade.core.tool.utils.Exceptions;
import org.springframework.lang.Nullable;
 
import java.util.Objects;
import java.util.function.Consumer;
import java.util.function.Function;
import java.util.function.Supplier;
 
/**
 * Lambda 受检异常处理
 * https://segmentfault.com/a/1190000007832130
 *
 * @author Chill
 */
public class Try {
 
    public static <T, R> Function<T, R> of(UncheckedFunction<T, R> mapper) {
        Objects.requireNonNull(mapper);
        return t -> {
            try {
                return mapper.apply(t);
            } catch (Exception e) {
                throw Exceptions.unchecked(e);
            }
        };
    }
 
    public static <T> Consumer<T> of(UncheckedConsumer<T> mapper) {
        Objects.requireNonNull(mapper);
        return t -> {
            try {
                mapper.accept(t);
            } catch (Exception e) {
                throw Exceptions.unchecked(e);
            }
        };
    }
 
    public static <T> Supplier<T> of(UncheckedSupplier<T> mapper) {
        Objects.requireNonNull(mapper);
        return () -> {
            try {
                return mapper.get();
            } catch (Exception e) {
                throw Exceptions.unchecked(e);
            }
        };
    }
 
    @FunctionalInterface
    public interface UncheckedFunction<T, R> {
        /**
         * apply
         *
         * @param t
         * @return
         * @throws Exception
         */
        @Nullable
        R apply(@Nullable T t) throws Exception;
    }
 
    @FunctionalInterface
    public interface UncheckedConsumer<T> {
        /**
         * accept
         *
         * @param t
         * @throws Exception
         */
        @Nullable
        void accept(@Nullable T t) throws Exception;
    }
 
    @FunctionalInterface
    public interface UncheckedSupplier<T> {
        /**
         * get
         *
         * @return
         * @throws Exception
         */
        @Nullable
        T get() throws Exception;
    }
}