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Added string class
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Alex
233
include/string.hpp
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233
include/string.hpp
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#ifndef __FENNIX_KERNEL_STRING_H__
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#define __FENNIX_KERNEL_STRING_H__
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#include <types.h>
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#include <convert.h>
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#include <debug.h>
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// show debug messages
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// #define DEBUG_CPP_STRING 1
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#ifdef DEBUG_CPP_STRING
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#define strdbg(m, ...) debug(m, ##__VA_ARGS__)
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#else
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#define strdbg(m, ...)
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#endif
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// TODO: Somewhere the delete is called twice, causing a double free error.
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/**
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* @brief String class
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* String class that can be used to store strings.
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*/
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class String
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{
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private:
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char *m_Data;
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int m_Length;
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int m_Capacity;
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public:
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String(const char *Str = "")
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{
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this->m_Length = strlen(Str);
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this->m_Capacity = this->m_Length + 1;
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this->m_Data = new char[m_Capacity];
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strcpy(m_Data, Str);
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strdbg("New string created: \"%s\" (data: %#lx, length: %d, capacity: %d)", this->m_Data, this->m_Data, this->m_Length, this->m_Capacity);
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}
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~String()
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{
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strdbg("String deleted: \"%s\" (data: %#lx, length: %d, capacity: %d)", this->m_Data, this->m_Data, this->m_Length, this->m_Capacity);
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delete[] this->m_Data;
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}
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int length() const
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{
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strdbg("String length: %d", this->m_Length);
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return this->m_Length;
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}
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int capacity() const
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{
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strdbg("String capacity: %d", this->m_Capacity);
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return this->m_Capacity;
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}
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const char *c_str() const
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{
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strdbg("String data: \"%s\"", this->m_Data);
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return this->m_Data;
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}
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void resize(int NewLength)
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{
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strdbg("String resize: %d", NewLength);
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if (NewLength > this->m_Capacity)
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{
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int newCapacity = NewLength + 1;
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char *newData = new char[newCapacity];
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strcpy(newData, this->m_Data);
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strdbg("old: %#lx, new: %#lx", this->m_Data, newData);
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delete[] this->m_Data;
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this->m_Data = newData;
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this->m_Capacity = newCapacity;
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}
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this->m_Length = NewLength;
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this->m_Data[m_Length] = '\0';
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strdbg("String resized: \"%s\" (data: %#lx, length: %d, capacity: %d)", this->m_Data, this->m_Data, this->m_Length, this->m_Capacity);
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}
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void concat(const String &Other)
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{
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int NewLength = this->m_Length + Other.m_Length;
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this->resize(NewLength);
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strcat(m_Data, Other.m_Data);
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strdbg("String concatenated: \"%s\" (data: %#lx, length: %d, capacity: %d)", this->m_Data, this->m_Data, this->m_Length, this->m_Capacity);
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}
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String operator+(const String &Other) const
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{
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String result = *this;
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result.concat(Other);
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strdbg("String added: \"%s\" (data: %#lx, length: %d, capacity: %d)", result.m_Data, result.m_Data, result.m_Length, result.m_Capacity);
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return result;
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}
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String operator+(const char *Other) const
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{
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String result = *this;
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result.concat(Other);
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strdbg("String added: \"%s\" (data: %#lx, length: %d, capacity: %d)", result.m_Data, result.m_Data, result.m_Length, result.m_Capacity);
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return result;
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}
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/* warning: implicitly-declared ‘constexpr String::String(const String&)’ is deprecated [-Wdeprecated-copy] */
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String &operator=(const String &Other) = default;
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// String &operator=(const String &Other)
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// {
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// if (this != &Other)
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// {
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// delete[] this->m_Data;
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// this->m_Data = Other.m_Data;
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// this->m_Length = Other.m_Length;
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// this->m_Capacity = Other.m_Capacity;
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// strdbg("String assigned: \"%s\" (data: %#lx, length: %d, capacity: %d)", this->m_Data, this->m_Data, this->m_Length, this->m_Capacity);
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// }
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// return *this;
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// }
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String &operator=(const char *Other)
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{
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this->m_Length = strlen(Other);
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this->m_Capacity = this->m_Length + 1;
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delete[] this->m_Data;
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this->m_Data = new char[m_Capacity];
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strcpy(m_Data, Other);
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strdbg("String assigned: \"%s\" (data: %#lx, length: %d, capacity: %d)", this->m_Data, this->m_Data, this->m_Length, this->m_Capacity);
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return *this;
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}
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String &operator<<(const String &Other)
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{
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this->concat(Other);
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strdbg("String appended: \"%s\" (data: %#lx, length: %d, capacity: %d)", this->m_Data, this->m_Data, this->m_Length, this->m_Capacity);
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return *this;
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}
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String &operator<<(const char *Other)
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{
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this->concat(Other);
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strdbg("String appended: \"%s\" (data: %#lx, length: %d, capacity: %d)", this->m_Data, this->m_Data, this->m_Length, this->m_Capacity);
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return *this;
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}
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char &operator[](int Index)
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{
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strdbg("String index: %d", Index);
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return this->m_Data[Index];
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}
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const char &operator[](int Index) const
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{
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strdbg("String index: %d", Index);
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return this->m_Data[Index];
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}
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bool operator==(const String &Other) const
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{
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strdbg("String compared: \"%s\" == \"%s\"", this->m_Data, Other.m_Data);
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return strcmp(this->m_Data, Other.m_Data) == 0;
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}
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bool operator!=(const String &Other) const
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{
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strdbg("String compared: \"%s\" != \"%s\"", this->m_Data, Other.m_Data);
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return strcmp(this->m_Data, Other.m_Data) != 0;
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}
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bool operator==(const char *Other) const
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{
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strdbg("String compared: \"%s\" == \"%s\"", this->m_Data, Other);
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return strcmp(this->m_Data, Other) == 0;
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}
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bool operator!=(const char *Other) const
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{
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strdbg("String compared: \"%s\" != \"%s\"", this->m_Data, Other);
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return strcmp(this->m_Data, Other) != 0;
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}
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class Iterator
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{
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private:
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char *m_Pointer;
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public:
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Iterator(char *Pointer) : m_Pointer(Pointer) {}
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Iterator &operator++()
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{
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++this->m_Pointer;
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strdbg("String iterator incremented: %#lx", this->m_Pointer);
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return *this;
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}
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char &operator*()
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{
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strdbg("String iterator dereferenced: %#lx", this->m_Pointer);
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return *this->m_Pointer;
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}
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bool operator!=(const Iterator &Other) const
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{
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strdbg("String iterator compared: %#lx != %#lx", this->m_Pointer, Other.m_Pointer);
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return this->m_Pointer != Other.m_Pointer;
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}
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bool operator==(const Iterator &Other) const
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{
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strdbg("String iterator compared: %#lx == %#lx", this->m_Pointer, Other.m_Pointer);
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return this->m_Pointer == Other.m_Pointer;
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}
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};
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Iterator begin()
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{
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strdbg("String iterator begin: %#lx", this->m_Data);
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return Iterator(this->m_Data);
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}
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Iterator end()
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{
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strdbg("String iterator end: %#lx", this->m_Data + this->m_Length);
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return Iterator(this->m_Data + this->m_Length);
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}
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};
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#endif // !__FENNIX_KERNEL_STRING_H__
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