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41 lines
1.2 KiB
41 lines
1.2 KiB
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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