OperatorBit.java

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

import com.ql.util.express.Operator;
import com.ql.util.express.exception.QLException;

import java.util.Arrays;

/**
 * Created by tianqiao on 16/12/15.
 */
public class OperatorBit extends Operator {
    
    public OperatorBit(String name)
    {
        this.name = name;
    }
    @Override
    public Object executeInner(Object[] list) throws Exception {
        if( this.name.equals("~")){
            if (list.length == 1 && list[0] instanceof Number) {
                if(list[0]instanceof Integer) {
                    return ~(((Number) list[0]).intValue());
                }else{
                    return ~(((Number) list[0]).longValue());
                }
            }else{
                throw new QLException("取反操作符 ~ 参数不合法:"+ Arrays.toString(list));
            }
        }
        if( this.name.equals("&")){
            if (list.length == 2 && list[0] instanceof Number && list[1] instanceof Number) {
                if(list[0]instanceof Integer && list[1] instanceof Integer){
                    return (Integer)list[0]&(Integer)list[1];
                }
                return (((Number)list[0]).longValue())&(((Number)list[1]).longValue());
            }else{
                throw new QLException("按位与操作符 & 两边的参数不合法:"+ Arrays.toString(list));
            }
        }
        if( this.name.equals("|")){
            if (list.length == 2 && list[0] instanceof Number && list[1] instanceof Number) {
                if(list[0]instanceof Integer && list[1] instanceof Integer){
                    return (Integer)list[0]|(Integer)list[1];
                }
                return (((Number)list[0]).longValue())|(((Number)list[1]).longValue());
            }else{
                throw new QLException("按位或操作符 | 两边的参数不合法:"+ Arrays.toString(list));
            }
        }
        if( this.name.equals("^")){
            if (list.length == 2 && list[0] instanceof Number && list[1] instanceof Number) {
                if(list[0]instanceof Integer && list[1] instanceof Integer){
                    return (Integer)list[0]^(Integer)list[1];
                }
                return (((Number)list[0]).longValue())^(((Number)list[1]).longValue());
            }else{
                throw new QLException("按位异或操作符 ^ 两边的参数不合法:"+ Arrays.toString(list));
            }
        }
        if( this.name.equals("<<")){
            if (list.length == 2 && list[0] instanceof Number && list[1] instanceof Number) {
                if(list[0]instanceof Integer && list[1] instanceof Integer){
                    return (Integer)list[0]<<(Integer)list[1];
                }
                return (((Number)list[0]).longValue())<<(((Number)list[1]).longValue());
            }else{
                throw new QLException("左移操作符 << 两边的参数不合法:"+ Arrays.toString(list));
            }
        }
        if( this.name.equals(">>")){
            if (list.length == 2 && list[0] instanceof Number && list[1] instanceof Number) {
                if(list[0]instanceof Integer && list[1] instanceof Integer){
                    return (Integer)list[0]>>(Integer)list[1];
                }
                return (((Number)list[0]).longValue())>>(((Number)list[1]).longValue());
            }else{
                throw new QLException("右移操作符 >> 两边的参数不合法:"+ Arrays.toString(list));
            }
        }
        throw new QLException("不支持的位运算操作符:"+ Arrays.toString(list));
    }
}