working stringview

seminar03_initialization/08_stringview/main.cpp

@@ -2,15 +2,17 @@
 #include "miptstring.cpp"
 #include "miptstringview.cpp"
 
+
 using namespace std;
 
 int main() {
-        mipt::String str = "Meow!!";
-        cout << str << endl;
-        mipt::StringView sv = str;
-        cout << "string view: " << sv << endl; 
-        char a[] = "nyaa!";
-        mipt::StringView sv1 = a;
-       cout << "string view: " << sv1 << endl; 
-       cout << sv1.at(200) << endl;
+    mipt::String a = "abcd";
+    mipt::String b = "abce";
+    mipt::StringView av = a;
+    mipt::StringView bv = b;
+    //cout << (b < a) << endl;
+    //cout << (bv < av) << endl;
+    cout << av.substr(1,10) << endl; 
+    av.remove_suffix(5);
+    cout << av << endl;
 }

seminar03_initialization/08_stringview/miptstring.cpp

@@ -4,6 +4,8 @@
 #include <algorithm>
 #include <cstdlib>
 #include <cstring>
+//#include "miptstringview.cpp"
+
 using std::cout, std::cin, std::endl, std::size_t;
 
 namespace mipt{
@@ -39,7 +41,15 @@ public:
 
     String() : String("") {}
     String(const String& s) : String(s.cStr()) {}
-
+/*    String(const mipt::StringView& sv) {
+        mSize = sv.size();
+        self.reserve(mSize);
+        for(int i = 0; i < mSize; ++i)
+            mpData[i] = sv[i];
+        mpData[mSize] = '\0';
+        
+    }
+*/
     String(size_t n, char a)
     {
         resize(n);
@@ -218,4 +228,5 @@ std::istream& operator>>(std::istream& in, String& s)
     return in;
 }
 
+
 }

seminar03_initialization/08_stringview/miptstringview.cpp

@@ -44,12 +44,39 @@ public:
     {
         return mpData[i];
     }
+    bool operator<(const StringView& right) const
+    {
+        size_t i = 0;
+        while (i < mSize && i < right.mSize && mpData[i] == right.mpData[i])
+            i++;
+
+        return mpData[i] < right.mpData[i];
+    }
     size_t size() {
         return mSize;
     }
+    StringView substr(size_t pos, size_t count) {
+        if (pos > mSize) 
+                throw std::out_of_range("Error! Index is out of bounds.");
+        if (pos + count > mSize)
+              count = mSize - pos;
+        StringView result;
+        result.mpData = mpData + pos;
+        result.mSize = count;
+        return result;
+    }
+    void remove_prefix(size_t n) {
+            mSize -= n;
+    }
+    void remove_suffix(size_t n) {
+            mSize -= n;
+            mpData += n;
+    }
+    
+};
 
 };
-}
+
 
 std::ostream& operator<<(std::ostream& out, mipt::StringView sv) {
     size_t size = sv.size();