finished stringview

seminar03_initialization/08_stringview/main.cpp

@@ -1,16 +1,18 @@
 #include <iostream>
-#include "miptstring.cpp"
-#include "miptstringview.cpp"
-
+#include "miptstring.h"
+#include "miptstringview.h"
 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(2);
+    cout << av << endl;
+    mipt::String meow = av;
+    cout << "sv to string: " << meow << endl;
 }

seminar03_initialization/08_stringview/miptstring.cpp

@@ -1,9 +1,9 @@
-#pragma once
-
 #include <iostream>
 #include <algorithm>
 #include <cstdlib>
 #include <cstring>
+#include "miptstring.h"
+#include "miptstringview.h"
 using std::cout, std::cin, std::endl, std::size_t;
 
 namespace mipt{
@@ -19,184 +19,181 @@ char* errorCheckedMalloc(size_t newCapacity)
     return result;
 }
 
-
-class String 
+String::String(const char* str) 
 {
-private:
+    size_t strSize = std::strlen(str);
+    resize(strSize);
+    std::memcpy(mpData, str, mSize);
+}
 
-    size_t mSize        {0};
-    size_t mCapacity    {0};
-    char* mpData        {nullptr};
-
-public:
-
-    String(const char* str) 
-    {
-        size_t strSize = std::strlen(str);
-        resize(strSize);
-        std::memcpy(mpData, str, mSize);
-    }
-
-    String() : String("") {}
-    String(const String& s) : String(s.cStr()) {}
-
-    String(size_t n, char a)
-    {
-        resize(n);
-
-        for (size_t i = 0; i < mSize; ++i)
-            mpData[i] = a;
-    }
-
-    ~String()
-    {
-        std::free(mpData);
-    }
-
-    void reserve(size_t capacity)
-    {
-        if (capacity <= mCapacity)
-            return;
-
-        mCapacity = std::max(2 * mCapacity, capacity);
-        char* newData = errorCheckedMalloc(mCapacity);
-
-        if (mpData)
-            std::memcpy(newData, mpData, mSize + 1);
-
-        std::free(mpData);
-        mpData = newData;
-    }
-
-
-    void resize(size_t size)
-    {
-        reserve(size + 1);
-        mSize = size;
+String::String() : String("") {}
+String::String(const String& s) : String(s.cStr()) {}
+String::String(const StringView& sv) {
+        mSize = sv.size();
+        (*this).reserve(mSize);
+        for(int i = 0; i < mSize; ++i)
+            mpData[i] = sv[i];
         mpData[mSize] = '\0';
-    }
+        
+}
+
+String::String(size_t n, char a)
+{
+    resize(n);
+
+    for (size_t i = 0; i < mSize; ++i)
+        mpData[i] = a;
+}
+
+String::~String()
+{
+    std::free(mpData);
+}
+
+void String::reserve(size_t capacity)
+{
+    if (capacity <= mCapacity)
+        return;
+
+    mCapacity = std::max(2 * mCapacity, capacity);
+    char* newData = errorCheckedMalloc(mCapacity);
+
+    if (mpData)
+        std::memcpy(newData, mpData, mSize + 1);
+
+    std::free(mpData);
+    mpData = newData;
+}
 
 
-    String& operator=(const String& right)
-    {
-        if (this == &right)
-            return *this;
+void String::resize(size_t size)
+{
+    reserve(size + 1);
+    mSize = size;
+    mpData[mSize] = '\0';
+}
 
-        mSize = right.mSize;
-        resize(mSize);
-
-        std::memcpy(mpData, right.mpData, mSize + 1);
 
+String& String::operator=(const String& right)
+{
+    if (this == &right)
         return *this;
-    }
+
+    mSize = right.mSize;
+    resize(mSize);
+
+    std::memcpy(mpData, right.mpData, mSize + 1);
+
+    return *this;
+}
 
 
-    String operator+(const String& b)
+String String::operator+(const String& b)
+{
+    String result;
+    result.resize(mSize + b.mSize);
+
+    std::memcpy(result.mpData, mpData, mSize);
+    std::memcpy(result.mpData + mSize, b.mpData, b.mSize);
+    result.mpData[result.mSize] = '\0';
+
+    return result;
+}
+
+String& String::operator+=(const String& right)
+{
+    *this = *this + right;
+    return *this;
+}
+
+bool String::operator==(const String& right) const
+{
+    if (mSize != right.mSize)
+        return false;
+
+    size_t i = 0;
+    while (i < mSize && mpData[i] == right.mpData[i])
+        i++;
+
+    return i == mSize;
+}
+
+bool String::operator<(const String& right) const
+{
+    size_t i = 0;
+    while (i < mSize && i < right.mSize && mpData[i] == right.mpData[i])
+        i++;
+
+    return mpData[i] < right.mpData[i];
+}
+
+bool String::operator<=(const String& right) const
+{
+    size_t i = 0;
+    while (i < mSize && i < right.mSize && mpData[i] == right.mpData[i])
+        i++;
+
+    return mpData[i] <= right.mpData[i];
+}
+
+bool String::operator!=(const String& right) const
+{
+    return !(*this == right);
+}
+
+bool String::operator>(const String& right) const
+{
+    return !(*this <= right);
+}
+
+bool String::operator>=(const String& right) const
+{
+    return !(*this < right);
+}
+
+char& String::operator[](size_t i)
+{
+    return mpData[i];
+}
+
+const char& String::operator[](size_t i) const
+{
+    return mpData[i];
+}
+
+char& String::at(size_t i)
+{
+    if (i >= mSize)
     {
-        String result;
-        result.resize(mSize + b.mSize);
-
-        std::memcpy(result.mpData, mpData, mSize);
-        std::memcpy(result.mpData + mSize, b.mpData, b.mSize);
-        result.mpData[result.mSize] = '\0';
-
-        return result;
+        cout << "Error! Index is out of bounds." << endl;
     }
+    return mpData[i];
+}
 
-    String& operator+=(const String& right)
-    {
-        *this = *this + right;
-        return *this;
-    }
+void String::clear()
+{
+    std::free(mpData);
 
-    bool operator==(const String& right) const
-    {
-        if (mSize != right.mSize)
-            return false;
+    mSize = 0;
+    mCapacity = 1;
+    mpData = errorCheckedMalloc(mCapacity);
+    mpData[0] = '\0';
+}
 
-        size_t i = 0;
-        while (i < mSize && mpData[i] == right.mpData[i])
-            i++;
+void String::addCharacter(char c)
+{
+    if (mSize + 1 == mCapacity)
+        reserve(2 * mCapacity);
 
-        return i == mSize;
-    }
-
-    bool operator<(const String& right) const
-    {
-        size_t i = 0;
-        while (i < mSize && i < right.mSize && mpData[i] == right.mpData[i])
-            i++;
-
-        return mpData[i] < right.mpData[i];
-    }
-
-    bool operator<=(const String& right) const
-    {
-        size_t i = 0;
-        while (i < mSize && i < right.mSize && mpData[i] == right.mpData[i])
-            i++;
-
-        return mpData[i] <= right.mpData[i];
-    }
-
-    bool operator!=(const String& right) const
-    {
-        return !(*this == right);
-    }
-
-    bool operator>(const String& right) const
-    {
-        return !(*this <= right);
-    }
-
-    bool operator>=(const String& right) const
-    {
-        return !(*this < right);
-    }
-
-    char& operator[](size_t i)
-    {
-        return mpData[i];
-    }
-
-    const char& operator[](size_t i) const
-    {
-        return mpData[i];
-    }
-
-    char& at(size_t i)
-    {
-        if (i >= mSize)
-        {
-            cout << "Error! Index is out of bounds." << endl;
-        }
-        return mpData[i];
-    }
-
-    void clear()
-    {
-        std::free(mpData);
-
-        mSize = 0;
-        mCapacity = 1;
-        mpData = errorCheckedMalloc(mCapacity);
-        mpData[0] = '\0';
-    }
-
-    void addCharacter(char c)
-    {
-        if (mSize + 1 == mCapacity)
-            reserve(2 * mCapacity);
-
-        mpData[mSize] = c;
-        resize(mSize + 1);
-    }
+    mpData[mSize] = c;
+    resize(mSize + 1);
+}
 
 
-    size_t getSize()        const   {return mSize;}
-    size_t getCapacity()    const   {return mCapacity;}
-    const char* cStr()      const   {return mpData;}
-};
+size_t String::getSize()        const   {return mSize;}
+size_t String::getCapacity()    const   {return mCapacity;}
+const char* String::cStr()      const   {return mpData;}
+
 
 
 std::ostream& operator<<(std::ostream& out, const String& s) 

seminar03_initialization/08_stringview/miptstring.h

@@ -0,0 +1,43 @@
+#pragma once
+#include <iostream>
+
+namespace mipt {
+
+class StringView;
+class String 
+{
+private:
+    size_t mSize        {0};
+    size_t mCapacity    {0};
+    char* mpData        {nullptr};
+public:
+    String(const char* str);
+    String();
+    String(const String& s);
+    String(const mipt::StringView& sv);
+    String(size_t n, char a);
+    ~String();
+    void reserve(size_t capacity);
+    void resize(size_t size);
+    String& operator=(const String& right);
+    String operator+(const String& b);
+    String& operator+=(const String& right);
+    bool operator==(const String& right) const;
+    bool operator<(const String& right) const;
+    bool operator<=(const String& right) const;
+    bool operator!=(const String& right) const;
+    bool operator>(const String& right) const;
+    bool operator>=(const String& right) const;
+    char& operator[](size_t i);
+    const char& operator[](size_t i) const;
+    char& at(size_t i);
+    void clear();
+    void addCharacter(char c);
+    size_t getSize()        const; 
+    size_t getCapacity()    const;
+    const char* cStr()      const;
+};
+
+std::ostream& operator<<(std::ostream& out, const String& s);
+std::istream& operator>>(std::istream& in, String& s); 
+}

seminar03_initialization/08_stringview/miptstringview.cpp

@@ -1,37 +1,30 @@
-#pragma once
-
 #include <iostream>
 #include <algorithm>
 #include <cstdlib>
 #include <cstring>
+#include "miptstring.h"
+#include "miptstringview.h"
 using std::cout, std::cin, std::endl, std::size_t;
 
 namespace mipt {
 
-class StringView 
-{
-private:
-    const char* mpData;
-    size_t mSize;
-  
-public:  
-    StringView() {;
+    StringView::StringView() {;
         mSize = 0;
         mpData = nullptr;
     }
-    StringView(const StringView& str) {
+    StringView::StringView(const StringView& str) {
         mSize = str.mSize;
         mpData = str.mpData;
     }
-    StringView(const mipt::String& s) {
+    StringView::StringView(const mipt::String& s) {
         mSize = s.getSize();
         mpData = s.cStr();  
     }
-    StringView(const char* s) {
+    StringView::StringView(const char* s) {
         mpData = s;
         mSize = strlen(s); 
     }
-    const char& at(size_t i)
+    const char& StringView::at(size_t i)
     {
         if (i >= mSize)
         {
@@ -40,20 +33,49 @@ public:
         }
         return mpData[i];
     }
-    const char& operator[](size_t i)
+    const char& StringView::operator[](size_t i) const
     {
         return mpData[i];
     }
-    size_t size() {
+    bool StringView::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 StringView::size() const {
         return mSize;
     }
-
-};
-}
-
-std::ostream& operator<<(std::ostream& out, mipt::StringView sv) {
+    StringView 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 StringView::remove_prefix(size_t n) {
+            mSize -= n;
+    }
+    void StringView::remove_suffix(size_t n) {
+            mSize -= n;
+            mpData += n;
+    }
+/*std::ostream& StringView::operator<<(std::ostream& out, mipt::StringView sv) {
+    size_t size = sv.size();
+    for (int i = 0; i < size; ++i)
+            out << sv[i];
+    return out; 
+}*/
+std::ostream& operator<<(std::ostream& out, const mipt::StringView& sv) {
     size_t size = sv.size();
     for (int i = 0; i < size; ++i)
             out << sv[i];
     return out; 
 }
+};
+

seminar03_initialization/08_stringview/miptstringview.h

@@ -0,0 +1,28 @@
+#pragma once
+
+#include <iostream>
+
+namespace mipt {
+class String;
+class StringView 
+{
+private:
+    const char* mpData;
+    size_t mSize;
+public:  
+    StringView();
+    StringView(const StringView& str);
+    StringView(const mipt::String& s);
+    StringView(const char* s);
+    const char& at(size_t i);
+    const char& operator[](size_t i) const;
+    bool operator<(const StringView& right) const;
+    size_t size() const;
+    StringView substr(size_t pos, size_t count);
+    void remove_prefix(size_t n); 
+    void remove_suffix(size_t n);
+};
+
+std::ostream& operator<<(std::ostream& out, const StringView& sv);
+
+}