添加异常类

base/exception/sales.cpp

@@ -0,0 +1,54 @@
+//
+// Created by nicemoe on 2021/9/7.
+//
+
+#include "sales.h"
+using namespace std;
+
+Sales::bad_index::bad_index(int ix, const std::string &s) :std::logic_error(s),bi(ix){
+}
+Sales::Sales(int yy, const double *gr, int n) {
+    year =yy;
+    int lim = (n < MONTHS)?n : MONTHS;
+    int i;
+    for (i = 0; i < lim; ++i) {
+        gross[i] = gr[i];
+    }
+    for (; i < MONTHS; ++i) {
+        gross[i] = 0;
+    }
+}
+double Sales::operator[](int i) const {
+    if (i < 0|| i >= MONTHS){
+        throw bad_index(i);
+    }
+    return gross[i];
+}
+double & Sales::operator[](int i){
+    if (i < 0|| i >= MONTHS){
+        throw bad_index(i);
+    }
+    return gross[i];
+}
+
+LabeledSales::nbad_index::nbad_index(const std::string &lb, int ix, const std::string &s): Sales::bad_index(ix,s) {
+    lbl = lb;
+}
+LabeledSales::LabeledSales(const std::string &lb, int yy) : Sales(yy){
+    label = lb;
+}
+LabeledSales::LabeledSales(const std::string &lb, int yy, const double *gr, int n) : Sales(yy,gr,n){
+    label =lb;
+}
+double LabeledSales::operator[](int i) const {
+    if (i < 0|| i >= MONTHS){
+        throw nbad_index(Label(),i);
+    }
+    return Sales::operator[](i);
+}
+double & LabeledSales::operator[](int i) {
+    if (i < 0|| i >= MONTHS){
+        throw nbad_index(Label(),i);
+    }
+    return Sales::operator[](i);
+}

base/exception/sales.h

@@ -0,0 +1,76 @@
+//
+// Created by nicemoe on 2021/9/7.
+//
+
+#ifndef BASE_SALES_H
+#define BASE_SALES_H
+
+#include <stdexcept>
+#include <string>
+
+class Sales {
+public:
+    enum {
+        MONTHS = 12
+    };
+
+    class bad_index : public std::logic_error {
+    private:
+        int bi;
+    public:
+        explicit bad_index(int ix, const std::string &s = "Index error in Sales object\n");
+
+        int bi_val() const {
+            return bi;
+        }
+
+        virtual ~bad_index() throw() {}
+    };
+
+    explicit Sales(int yy = 0);
+
+    Sales(int yy, const double *gr, int n);
+
+    virtual ~Sales();
+
+    int Year() const {
+        return year;
+    }
+
+    virtual double operator[](int i) const;
+
+    virtual double &operator[](int i);
+
+private:
+    double gross[MONTHS];
+    int year;
+};
+
+class LabeledSales : public Sales {
+private:
+    std::string label;
+public:
+    class nbad_index : public Sales::bad_index {
+    private:
+        std::string lbl;
+    public:
+        nbad_index(const std::string &lb, int ix, const std::string &s = "Index error in LabeledSales object\n");
+
+        const std::string &label_val() const {
+            return lbl;
+        }
+
+        virtual ~nbad_index() throw() {}
+    };
+    explicit LabeledSales(const std::string & lb = "none",int yy =0);
+    LabeledSales(const std::string & lb,int yy,const double  * gr,int n);
+    virtual ~LabeledSales();
+    const std::string & Label() const{
+        return label;
+    }
+    virtual double operator[](int i) const;
+
+    virtual double &operator[](int i);
+};
+
+#endif //BASE_SALES_H