finekit/src/main/java/com/fanruan/api/function/FunctionKit.java

package com.fanruan.api.function;

import com.fanruan.api.function.shell.FineFunc;
import com.fr.design.formula.FunctionDefNAD;
import com.fr.design.formula.NameAndDescription;
import com.fr.file.FunctionManager;
import com.fr.file.FunctionManagerProvider;
import com.fr.script.Calculator;
import com.fr.stable.StringUtils;
import com.fr.stable.fun.FunctionHelper;
import com.fr.stable.script.FunctionDef;

import java.util.ArrayList;
import java.util.List;

/**
 * @author zack
 * @date 2019/8/23
 * @version 10.0
 * 函数相关工具类
 */
public class FunctionKit {
    /**
     * 新增一个自定义函数
     *
     * @param fineFunc 自定义函数对象
     */
    public static void addFunc(FineFunc fineFunc) {
        if (fineFunc == null) {
            return;
        }
        if (Calculator.createCalculator().resolveMethod(fineFunc.getName()) == null) {
            FunctionManager.getInstance().addFunctionDef(new FunctionDef(fineFunc.getName(), fineFunc.getDescription(), fineFunc.getClassName()));
        }
    }

    /**
     * 根据自定义函数类路径移除一个自定义函数
     *
     * @param className 自定义函数类路径
     */
    public static void removeFunc(String className) {
        if (StringUtils.isEmpty(className)) {
            return;
        }
        int count = FunctionManager.getInstance().getFunctionDefCount();
        List<FunctionDef> functionDefList = new ArrayList<FunctionDef>(count);
        for (int i = 0; i < count; i++) {
            FunctionDef functionDef = FunctionManager.getInstance().getFunctionDef(i);
            if (!className.equalsIgnoreCase(functionDef.getClassName())) {
                functionDefList.add(functionDef);
            }
        }
        if (functionDefList.size() == count) {
            return;
        }
        FunctionManager.getInstance().clearAllFunctionDef();
        for (FunctionDef fun : functionDefList) {
            FunctionManager.getInstance().addFunctionDef(fun);
        }
    }

    /**
     * 得到描述函数管理器中所有的函数的名称描述
     * @return 函数的名称描述数组
     */
    public static NameAndDescription[] getDescription() {
        FunctionManagerProvider funtionManager = FunctionKit.getInstance();
        if (funtionManager != null) {
            int functionDefCount = funtionManager.getFunctionDefCount();
            FunctionDefNAD[] nads = new FunctionDefNAD[functionDefCount];
            for (int i = 0; i < functionDefCount; i++) {
                nads[i] = new FunctionDefNAD(funtionManager.getFunctionDef(i));
            }

            return nads;
        }

        return new NameAndDescription[0];
    }
    /**
     * 得到函数管理器实例
     * @return 函数管理器
     */
    public static com.fr.file.FunctionManager getInstance() {
        return com.fr.file.FunctionManager.getInstance();
    }

    public static int generateFunctionID(String var0) {
        return FunctionHelper.generateFunctionID(var0);
    }

}