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#include "StringPool.h"
void StringPool::copyFrom(const StringPool& other)
{
data = new MyString * [other.count];
for (size_t i = 0; i < other.count; i++)
data[i] = new MyString(*other.data[i]);
count = other.count;
}
StringPool::StringPool()
{
count = 0;
data = nullptr;
}
void StringPool::free()
{
for (size_t i = 0; i < count; i++)
delete data[i]; //destr of MyString
delete[] data;
}
void StringPool::resize(size_t newCount)
{
MyString** resizedArray = new MyString*[newCount];
for (size_t i = 0; i < std::min(newCount,count); i++)
resizedArray[i] = data[i];
count = newCount;
delete[] data;
data = resizedArray;
}
StringPool& StringPool::operator*=(const MyString& word)
{
if ((*this)[word])
return *this;
resize(count + 1);
data[count - 1] = new MyString(word);
size_t currentStringPosition = count - 1;
while (currentStringPosition > 0 && *data[currentStringPosition] < *data[currentStringPosition - 1])
{
std::swap(data[currentStringPosition], data[currentStringPosition - 1]);
currentStringPosition--;
}
return *this;
}
StringPool& StringPool::operator/=(const MyString& str)
{
int indexOfWord = findWord(str);
if (indexOfWord == -1)
return *this;
delete data[indexOfWord];
for (int i = indexOfWord; i < count - 1; i++)
data[i] = data[i + 1];
resize(count - 1);
return *this;
}
int StringPool::findWord(const MyString& str) const
{
int l = 0;
int r = count - 1;
while (l <= r)
{
size_t mid = l + (r - l) / 2;
if (*data[mid] == str)
return mid;
else if (*data[mid] < str)
l = mid + 1;
else
r = mid - 1;
}
return -1;
}
bool StringPool::operator[](const MyString& str) const
{
return findWord(str) != -1;
}
std::ostream& operator<<(std::ostream& stream, const StringPool& pool)
{
for (size_t i = 0; i < pool.count; i++)
stream << (*pool.data[i]) << " ";
return stream;
}
void operator>>(const MyString& str, StringPool& pool)
{
pool *= str;
}
StringPool& StringPool::operator+=(const StringPool& other)
{
for (size_t i = 0; i < other.count; i++)
(*this) *= (*other.data[i]);
return *this;
}
StringPool& StringPool::operator-=(const StringPool& other)
{
for (size_t i = 0; i < other.count; i++)
(*this) /= (*other.data[i]);
return *this;
}
StringPool operator+(const StringPool& lhs, const StringPool& rhs)
{
StringPool copy(lhs);
copy += rhs;
return copy;
}
StringPool operator-(const StringPool& lhs, const StringPool& rhs)
{
StringPool copy(lhs);
copy -= rhs;
return copy;
}
StringPool::StringPool(const StringPool& other)
{
copyFrom(other);
}
StringPool& StringPool::operator=(const StringPool& other)
{
if (this != &other)
{
free();
copyFrom(other);
}
return *this;
}
StringPool::~StringPool()
{
free();
}
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