60 lines
1.4 KiB
C++
60 lines
1.4 KiB
C++
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/*
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* @Description:
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* @version:
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* @Author: 莫邪
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* @Date: 2023-10-27 10:42:09
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* @LastEditors: 莫邪
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* @LastEditTime: 2023-10-27 10:52:23
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*/
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#include <iostream>
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#include <memory>
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#include <map>
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using namespace std;
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// 抽象处理者
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class Handler {
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public:
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virtual void handleRequest(string request) = 0;
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void setNext(shared_ptr<Handler> handler) {
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nextHandler = handler;
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}
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protected:
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shared_ptr<Handler> nextHandler;
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};
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// 检查库存
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class StockChecker : public Handler {
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map<string, int> stock;
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public:
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StockChecker() {
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stock = {{"goods1", 100}, {"goods2", 10}, {"goods3", 1000}};
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}
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void handleRequest(string request) override {
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if (/* 检查库存 */stock[request] > 10) {
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cout << "库存检查通过" << endl;
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} else {
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cout << "商品库存不足" << endl;
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return;
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}
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// 传递给下一处理者
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if (nextHandler) nextHandler->handleRequest(request);
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}
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};
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// 校验价格
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class PriceValidator : public Handler {
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map<string, int> price;
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public:
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PriceValidator() {
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price = {{"goods1", 100}, {"goods2", 10}, {"goods3", 1000}};
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}
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void handleRequest(string request) override {
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if (/* 校验价格 */price[request] > 100) {
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cout << "价格校验通过" << endl;
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} else {
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cout << "商品价格错误" << endl;
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return;
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}
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if (nextHandler) nextHandler->handleRequest(request);
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}
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};
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// 其他具体处理者
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// ...
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