From 336445673c60b7c05b015114077f49493f18e7f4 Mon Sep 17 00:00:00 2001 From: Josh MacDonald Date: Sat, 1 Nov 2014 00:13:18 -0700 Subject: Checksum test under development --- xdelta3/cpp-btree/btree_container.h | 349 ++++++++++++++++++++++++++++++++++++ 1 file changed, 349 insertions(+) create mode 100644 xdelta3/cpp-btree/btree_container.h (limited to 'xdelta3/cpp-btree/btree_container.h') diff --git a/xdelta3/cpp-btree/btree_container.h b/xdelta3/cpp-btree/btree_container.h new file mode 100644 index 0000000..fb617ab --- /dev/null +++ b/xdelta3/cpp-btree/btree_container.h @@ -0,0 +1,349 @@ +// Copyright 2013 Google Inc. All Rights Reserved. +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. + +#ifndef UTIL_BTREE_BTREE_CONTAINER_H__ +#define UTIL_BTREE_BTREE_CONTAINER_H__ + +#include +#include + +#include "btree.h" + +namespace btree { + +// A common base class for btree_set, btree_map, btree_multiset and +// btree_multimap. +template +class btree_container { + typedef btree_container self_type; + + public: + typedef typename Tree::params_type params_type; + typedef typename Tree::key_type key_type; + typedef typename Tree::value_type value_type; + typedef typename Tree::key_compare key_compare; + typedef typename Tree::allocator_type allocator_type; + typedef typename Tree::pointer pointer; + typedef typename Tree::const_pointer const_pointer; + typedef typename Tree::reference reference; + typedef typename Tree::const_reference const_reference; + typedef typename Tree::size_type size_type; + typedef typename Tree::difference_type difference_type; + typedef typename Tree::iterator iterator; + typedef typename Tree::const_iterator const_iterator; + typedef typename Tree::reverse_iterator reverse_iterator; + typedef typename Tree::const_reverse_iterator const_reverse_iterator; + + public: + // Default constructor. + btree_container(const key_compare &comp, const allocator_type &alloc) + : tree_(comp, alloc) { + } + + // Copy constructor. + btree_container(const self_type &x) + : tree_(x.tree_) { + } + + // Iterator routines. + iterator begin() { return tree_.begin(); } + const_iterator begin() const { return tree_.begin(); } + iterator end() { return tree_.end(); } + const_iterator end() const { return tree_.end(); } + reverse_iterator rbegin() { return tree_.rbegin(); } + const_reverse_iterator rbegin() const { return tree_.rbegin(); } + reverse_iterator rend() { return tree_.rend(); } + const_reverse_iterator rend() const { return tree_.rend(); } + + // Lookup routines. + iterator lower_bound(const key_type &key) { + return tree_.lower_bound(key); + } + const_iterator lower_bound(const key_type &key) const { + return tree_.lower_bound(key); + } + iterator upper_bound(const key_type &key) { + return tree_.upper_bound(key); + } + const_iterator upper_bound(const key_type &key) const { + return tree_.upper_bound(key); + } + std::pair equal_range(const key_type &key) { + return tree_.equal_range(key); + } + std::pair equal_range(const key_type &key) const { + return tree_.equal_range(key); + } + + // Utility routines. + void clear() { + tree_.clear(); + } + void swap(self_type &x) { + tree_.swap(x.tree_); + } + void dump(std::ostream &os) const { + tree_.dump(os); + } + void verify() const { + tree_.verify(); + } + + // Size routines. + size_type size() const { return tree_.size(); } + size_type max_size() const { return tree_.max_size(); } + bool empty() const { return tree_.empty(); } + size_type height() const { return tree_.height(); } + size_type internal_nodes() const { return tree_.internal_nodes(); } + size_type leaf_nodes() const { return tree_.leaf_nodes(); } + size_type nodes() const { return tree_.nodes(); } + size_type bytes_used() const { return tree_.bytes_used(); } + static double average_bytes_per_value() { + return Tree::average_bytes_per_value(); + } + double fullness() const { return tree_.fullness(); } + double overhead() const { return tree_.overhead(); } + + bool operator==(const self_type& x) const { + if (size() != x.size()) { + return false; + } + for (const_iterator i = begin(), xi = x.begin(); i != end(); ++i, ++xi) { + if (*i != *xi) { + return false; + } + } + return true; + } + + bool operator!=(const self_type& other) const { + return !operator==(other); + } + + + protected: + Tree tree_; +}; + +template +inline std::ostream& operator<<(std::ostream &os, const btree_container &b) { + b.dump(os); + return os; +} + +// A common base class for btree_set and safe_btree_set. +template +class btree_unique_container : public btree_container { + typedef btree_unique_container self_type; + typedef btree_container super_type; + + public: + typedef typename Tree::key_type key_type; + typedef typename Tree::value_type value_type; + typedef typename Tree::size_type size_type; + typedef typename Tree::key_compare key_compare; + typedef typename Tree::allocator_type allocator_type; + typedef typename Tree::iterator iterator; + typedef typename Tree::const_iterator const_iterator; + + public: + // Default constructor. + btree_unique_container(const key_compare &comp = key_compare(), + const allocator_type &alloc = allocator_type()) + : super_type(comp, alloc) { + } + + // Copy constructor. + btree_unique_container(const self_type &x) + : super_type(x) { + } + + // Range constructor. + template + btree_unique_container(InputIterator b, InputIterator e, + const key_compare &comp = key_compare(), + const allocator_type &alloc = allocator_type()) + : super_type(comp, alloc) { + insert(b, e); + } + + // Lookup routines. + iterator find(const key_type &key) { + return this->tree_.find_unique(key); + } + const_iterator find(const key_type &key) const { + return this->tree_.find_unique(key); + } + size_type count(const key_type &key) const { + return this->tree_.count_unique(key); + } + + // Insertion routines. + std::pair insert(const value_type &x) { + return this->tree_.insert_unique(x); + } + iterator insert(iterator position, const value_type &x) { + return this->tree_.insert_unique(position, x); + } + template + void insert(InputIterator b, InputIterator e) { + this->tree_.insert_unique(b, e); + } + + // Deletion routines. + int erase(const key_type &key) { + return this->tree_.erase_unique(key); + } + // Erase the specified iterator from the btree. The iterator must be valid + // (i.e. not equal to end()). Return an iterator pointing to the node after + // the one that was erased (or end() if none exists). + iterator erase(const iterator &iter) { + return this->tree_.erase(iter); + } + void erase(const iterator &first, const iterator &last) { + this->tree_.erase(first, last); + } +}; + +// A common base class for btree_map and safe_btree_map. +template +class btree_map_container : public btree_unique_container { + typedef btree_map_container self_type; + typedef btree_unique_container super_type; + + public: + typedef typename Tree::key_type key_type; + typedef typename Tree::data_type data_type; + typedef typename Tree::value_type value_type; + typedef typename Tree::mapped_type mapped_type; + typedef typename Tree::key_compare key_compare; + typedef typename Tree::allocator_type allocator_type; + + private: + // A pointer-like object which only generates its value when + // dereferenced. Used by operator[] to avoid constructing an empty data_type + // if the key already exists in the map. + struct generate_value { + generate_value(const key_type &k) + : key(k) { + } + value_type operator*() const { + return std::make_pair(key, data_type()); + } + const key_type &key; + }; + + public: + // Default constructor. + btree_map_container(const key_compare &comp = key_compare(), + const allocator_type &alloc = allocator_type()) + : super_type(comp, alloc) { + } + + // Copy constructor. + btree_map_container(const self_type &x) + : super_type(x) { + } + + // Range constructor. + template + btree_map_container(InputIterator b, InputIterator e, + const key_compare &comp = key_compare(), + const allocator_type &alloc = allocator_type()) + : super_type(b, e, comp, alloc) { + } + + // Insertion routines. + data_type& operator[](const key_type &key) { + return this->tree_.insert_unique(key, generate_value(key)).first->second; + } +}; + +// A common base class for btree_multiset and btree_multimap. +template +class btree_multi_container : public btree_container { + typedef btree_multi_container self_type; + typedef btree_container super_type; + + public: + typedef typename Tree::key_type key_type; + typedef typename Tree::value_type value_type; + typedef typename Tree::size_type size_type; + typedef typename Tree::key_compare key_compare; + typedef typename Tree::allocator_type allocator_type; + typedef typename Tree::iterator iterator; + typedef typename Tree::const_iterator const_iterator; + + public: + // Default constructor. + btree_multi_container(const key_compare &comp = key_compare(), + const allocator_type &alloc = allocator_type()) + : super_type(comp, alloc) { + } + + // Copy constructor. + btree_multi_container(const self_type &x) + : super_type(x) { + } + + // Range constructor. + template + btree_multi_container(InputIterator b, InputIterator e, + const key_compare &comp = key_compare(), + const allocator_type &alloc = allocator_type()) + : super_type(comp, alloc) { + insert(b, e); + } + + // Lookup routines. + iterator find(const key_type &key) { + return this->tree_.find_multi(key); + } + const_iterator find(const key_type &key) const { + return this->tree_.find_multi(key); + } + size_type count(const key_type &key) const { + return this->tree_.count_multi(key); + } + + // Insertion routines. + iterator insert(const value_type &x) { + return this->tree_.insert_multi(x); + } + iterator insert(iterator position, const value_type &x) { + return this->tree_.insert_multi(position, x); + } + template + void insert(InputIterator b, InputIterator e) { + this->tree_.insert_multi(b, e); + } + + // Deletion routines. + int erase(const key_type &key) { + return this->tree_.erase_multi(key); + } + // Erase the specified iterator from the btree. The iterator must be valid + // (i.e. not equal to end()). Return an iterator pointing to the node after + // the one that was erased (or end() if none exists). + iterator erase(const iterator &iter) { + return this->tree_.erase(iter); + } + void erase(const iterator &first, const iterator &last) { + this->tree_.erase(first, last); + } +}; + +} // namespace btree + +#endif // UTIL_BTREE_BTREE_CONTAINER_H__ -- cgit v1.2.3