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Diffstat (limited to 'include/hiddenpointer.h')
| -rw-r--r-- | include/hiddenpointer.h | 183 |
1 files changed, 0 insertions, 183 deletions
diff --git a/include/hiddenpointer.h b/include/hiddenpointer.h deleted file mode 100644 index 955e7d7..0000000 --- a/include/hiddenpointer.h +++ /dev/null @@ -1,183 +0,0 @@ -/** - * HiddenPointer.h - * - * Helper class that we use to hide a pointer in a string. We do this - * by creating a string buffer that is a littlebit bigger, and put - * the hidden pointer in front of the name - * - * @author Emiel Bruijntjes <emiel.bruijntjes@copernica.com> - * @copyright 2013 Copernica BV - */ - -/** - * Set up namespace - */ -namespace Php { - -/** - * Class definition - */ -template <typename Type> -class HiddenPointer -{ -public: - /** - * Constructor to hide the pointer in a buffer - * @param pointer The pointer to hide - * @param text The visible text - * @param size Optional text size - */ - HiddenPointer(Type *pointer, const char *text, int size=-1) - { - // calculate size of the text - if (size < 0) size = ::strlen(text); - - // allocate data + trailing null + size of pointer - char *buffer = new char[size + 1 + sizeof(Type *)]; - - // copy pointer into the buffer - memcpy(buffer, &pointer, sizeof(Type *)); - - // copy the name into the buffer - memcpy(buffer + sizeof(Type *), text, size + 1); - - // store in member - _buffer = buffer; - } - - /** - * Hide pointer in buffer - * @param pointer - * @param text - */ - HiddenPointer(Type *pointer, const std::string &text) : - HiddenPointer(pointer, text.c_str(), text.size()) {} - - /** - * Constructor to retrieve the object given a buffer - * @param text The visible text - */ - HiddenPointer(const char *text) : - _buffer(text - sizeof(Type *)), // the buffer starts before the actual text - _allocated(false) {} // no memory was allocated - - /** - * Copy constructor - * @param that - */ - HiddenPointer(const HiddenPointer<Type> &that) : _allocated(that._allocated) - { - // is the other object allocated? - if (_allocated) - { - // allocate this object too, call other constructor - HiddenPointer(that, that); - } - else - { - // just copy the data - _buffer = that._buffer; - } - } - - /** - * Move constructor - * @param that - */ - HiddenPointer(HiddenPointer<Type> &&that) _NOEXCEPT : _allocated(that._allocated), _buffer(that._buffer) - { - // the other object is no longer allocated - that._allocated = false; - } - - /** - * Destructor - */ - virtual ~HiddenPointer() - { - // destruct data - if (_allocated) delete[] _buffer; - } - - /** - * Assignment operator - * @param that - * @return HiddenPointer - */ - HiddenPointer<Type> &operator=(const HiddenPointer &that) - { - // skip self assignmend - if (this == &that) return *this; - - // deallocate current object - if (_allocated) delete[] _buffer; - - // copy allocated setting - _allocated = that._allocated; - - // is the other object allocated? - if (_allocated) - { - // allocate this object too, call constructor - HiddenPointer(that, that); - } - else - { - // just copy the data - _buffer = that._buffer; - } - - // done - return *this; - } - - /** - * Retrieve the pointer - * @return Type* - */ - operator Type * () const - { - // type is stored in front of the buffer - return *((Type **)_buffer); - } - - /** - * Retrieve the text - * @return const char * - */ - operator const char * () const - { - // name starts a number of bytes further - return _buffer + sizeof(Type *); - } - - /** - * Derefence the pointer - * @return Type* - */ - Type *operator->() const - { - // type is stored in front of the buffer - return *((Type **)_buffer); - } - -private: - /** - * Buffer that holds both the pointer and the text - the text starts - * a number of bytes further up - * @var buffer - */ - const char *_buffer = nullptr; - - /** - * Was this allocated? - * @var bool - */ - bool _allocated = true; -}; - -/** - * End of namespace - */ -} - |