diff options
Diffstat (limited to 'raul/Array.hpp')
-rw-r--r-- | raul/Array.hpp | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/raul/Array.hpp b/raul/Array.hpp new file mode 100644 index 0000000..b972b87 --- /dev/null +++ b/raul/Array.hpp @@ -0,0 +1,110 @@ +/* This file is part of Raul. + * Copyright (C) 2007 Dave Robillard <http://drobilla.net> + * + * Raul is free software; you can redistribute it and/or modify it under the + * terms of the GNU General Public License as published by the Free Software + * Foundation; either version 2 of the License, or (at your option) any later + * version. + * + * Raul is distributed in the hope that it will be useful, but WITHOUT ANY + * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS + * FOR A PARTICULAR PURPOSE. See the GNU General Public License for details. + * + * You should have received a copy of the GNU General Public License along + * with this program; if not, write to the Free Software Foundation, Inc., + * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + */ + +#ifndef RAUL_ARRAY_HPP +#define RAUL_ARRAY_HPP + +#include <cassert> +#include <cstdlib> +#include "types.hpp" +#include "Deletable.hpp" + +namespace Raul { + + +/** An array. + * + * Has a stack-like push_back() too, for find_process_order... + */ +template <class T> +class Array : public Deletable +{ +public: + Array(size_t size = 0) : _size(size), _top(0), _elems(NULL) { + if (size > 0) + _elems = new T[size]; + } + + Array(size_t size, T initial_value) : _size(size), _top(0), _elems(NULL) { + if (size > 0) { + _elems = new T[size]; + for (size_t i=0; i < size; ++i) + _elems[i] = initial_value; + } + } + + Array(size_t size, const Array<T>& contents) : _size(size), _top(size+1) { + _elems = new T[size]; + if (size <= contents.size()) + memcpy(_elems, contents._elems, size * sizeof(T)); + else + memcpy(_elems, contents._elems, contents.size() * sizeof(T)); + } + + ~Array() { + free(); + } + + void alloc(size_t num_elems) { + assert(num_elems > 0); + + delete[] _elems; + _size = num_elems; + _top = 0; + + _elems = new T[num_elems]; + } + + void alloc(size_t num_elems, T initial_value) { + assert(num_elems > 0); + + delete[] _elems; + _size = num_elems; + _top = 0; + + _elems = new T[num_elems]; + for (size_t i=0; i < _size; ++i) + _elems[i] = initial_value; + } + + void free() { + delete[] _elems; + _size = 0; + _top = 0; + } + + void push_back(T n) { + assert(_top < _size); + _elems[_top++] = n; + } + + inline size_t size() const { return _size; } + + inline T& operator[](size_t i) const { assert(i < _size); return _elems[i]; } + + inline T& at(size_t i) const { assert(i < _size); return _elems[i]; } + +private: + size_t _size; + size_t _top; // points to empty element above "top" element + T* _elems; +}; + + +} // namespace Raul + +#endif // RAUL_ARRAY_HPP |