forked from fanruan/finekit
42 lines
1.2 KiB
42 lines
1.2 KiB
6 years ago
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package com.fanruan.api.cal;
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import com.fanruan.api.err.KitError;
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import com.fr.base.BaseFormula;
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import com.fr.script.Calculator;
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import com.fr.stable.UtilEvalError;
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import com.fr.stable.script.CalculatorProvider;
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/**
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* @author richie
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* @version 10.0
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* Created by richie on 2019-08-15
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* 公式计算相关的工具类
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*/
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public class FormulaKit {
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/**
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* 计算公式的值，会新建一个算子对象来计算该公式
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* @param formula 公式内容
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* @return 公式计算后的结果值
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* @throws KitError 如果计算过程中出现错误，则抛出此异常
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*/
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public static Object eval(String formula) throws KitError {
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return eval(Calculator.createCalculator(), formula);
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}
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/**
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* 计算公式的值
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* @param calculator 自定义算子
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* @param formula 公式内容
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* @return 公式计算后的结果值
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* @throws KitError 如果计算过程中出现错误，则抛出此异常
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*/
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public static Object eval(CalculatorProvider calculator, String formula) throws KitError {
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try {
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return BaseFormula.createFormulaBuilder().build(formula).eval(calculator);
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} catch (UtilEvalError u) {
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throw new KitError(u);
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}
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}
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}
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