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package com.ql.util.express.instruction.op;

import com.ql.util.express.ArraySwap;
import com.ql.util.express.ExpressUtil;
import com.ql.util.express.InstructionSetContext;
import com.ql.util.express.OperateData;
import com.ql.util.express.OperatorOfNumber;
import com.ql.util.express.instruction.OperateDataCacheManager;

public class OperatorDoubleAddReduce extends OperatorBase {
    public OperatorDoubleAddReduce(String name) {
        this.name = name;
    }

    @Override
    public OperateData executeInner(InstructionSetContext parent, ArraySwap list) throws Exception {
        Object obj = list.get(0).getObject(parent);
        Object result = null;
        if ("++".equals(this.getName())) {
            result = OperatorOfNumber.add(obj, 1, this.isPrecise);
        } else if ("--".equals(this.getName())) {
            result = OperatorOfNumber.subtract(obj, 1, this.isPrecise);
        }
        list.get(0).setObject(parent, result);

        if (result == null) {
            return OperateDataCacheManager.fetchOperateData(null, null);
        } else {
            return OperateDataCacheManager.fetchOperateData(result, ExpressUtil.getSimpleDataType(result.getClass()));
        }
    }
}