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package com.github.andyshao.util.function;

import com.github.andyshao.lang.Convert;
import com.github.andyshao.util.stream.RuntimeExceptionFactory;

import java.util.function.Supplier;

/**
 * 
 * 
 * Title:

 * Descript:

 * Copyright: Copryright(c) Jun 5, 2019

 * Encoding: UNIX UTF-8
 * 
 * @author Andy.Shao
 *
 * @param  return type
 * @see Supplier
 */
@FunctionalInterface
public interface ExceptionableSupplier {
	/**
	 * get operation
	 * @return the value
	 * @throws Throwable any error
	 */
	R get() throws Throwable;

	/**
	 * to supplier
	 * @param f exception factory
	 * @return {@link Supplier}
	 * @param  data type
	 */
	static  Convert, Supplier> toSupplier(RuntimeExceptionFactory f) {
		return input -> {
			return () -> {
				try {
					return input.get();
				} catch (Throwable e) {
					throw f.build(e);
				}
			};
		};
	}

	/**
	 * to supplier
	 * @return {@link Supplier}
	 * @param  data type
	 */
	static  Convert, Supplier> toSupplier() {
		return toSupplier(RuntimeExceptionFactory.DEFAULT);
	}
}