mirror of
https://github.com/ecency/ecency-mobile.git
synced 2024-12-23 13:22:02 +03:00
519 lines
21 KiB
C++
519 lines
21 KiB
C++
// ----------------------------------------------------------------------------
|
|
// Copyright (C) 2002-2006 Marcin Kalicinski
|
|
// Copyright (C) 2009 Sebastian Redl
|
|
//
|
|
// Distributed under the Boost Software License, Version 1.0.
|
|
// (See accompanying file LICENSE_1_0.txt or copy at
|
|
// http://www.boost.org/LICENSE_1_0.txt)
|
|
//
|
|
// For more information, see www.boost.org
|
|
// ----------------------------------------------------------------------------
|
|
|
|
#ifndef BOOST_PROPERTY_TREE_PTREE_HPP_INCLUDED
|
|
#define BOOST_PROPERTY_TREE_PTREE_HPP_INCLUDED
|
|
|
|
#include <boost/property_tree/ptree_fwd.hpp>
|
|
#include <boost/property_tree/string_path.hpp>
|
|
#include <boost/property_tree/stream_translator.hpp>
|
|
#include <boost/property_tree/exceptions.hpp>
|
|
#include <boost/property_tree/detail/ptree_utils.hpp>
|
|
|
|
#include <boost/multi_index_container.hpp>
|
|
#include <boost/multi_index/indexed_by.hpp>
|
|
#include <boost/multi_index/sequenced_index.hpp>
|
|
#include <boost/multi_index/ordered_index.hpp>
|
|
#include <boost/multi_index/member.hpp>
|
|
#include <boost/utility/enable_if.hpp>
|
|
#include <boost/throw_exception.hpp>
|
|
#include <boost/optional.hpp>
|
|
#include <utility> // for std::pair
|
|
|
|
namespace boost { namespace property_tree
|
|
{
|
|
|
|
/**
|
|
* Property tree main structure. A property tree is a hierarchical data
|
|
* structure which has one element of type @p Data in each node, as well
|
|
* as an ordered sequence of sub-nodes, which are additionally identified
|
|
* by a non-unique key of type @p Key.
|
|
*
|
|
* Key equivalency is defined by @p KeyCompare, a predicate defining a
|
|
* strict weak ordering.
|
|
*
|
|
* Property tree defines a Container-like interface to the (key-node) pairs
|
|
* of its direct sub-nodes. The iterators are bidirectional. The sequence
|
|
* of nodes is held in insertion order, not key order.
|
|
*/
|
|
template<class Key, class Data, class KeyCompare>
|
|
class basic_ptree
|
|
{
|
|
#if defined(BOOST_PROPERTY_TREE_DOXYGEN_INVOKED)
|
|
public:
|
|
#endif
|
|
// Internal types
|
|
/**
|
|
* Simpler way to refer to this basic_ptree\<C,K,P,A\> type.
|
|
* Note that this is private, and made public only for doxygen.
|
|
*/
|
|
typedef basic_ptree<Key, Data, KeyCompare> self_type;
|
|
|
|
public:
|
|
// Basic types
|
|
typedef Key key_type;
|
|
typedef Data data_type;
|
|
typedef KeyCompare key_compare;
|
|
|
|
// Container view types
|
|
typedef std::pair<const Key, self_type> value_type;
|
|
typedef std::size_t size_type;
|
|
|
|
// The problem with the iterators is that I can't make them complete
|
|
// until the container is complete. Sucks. Especially for the reverses.
|
|
class iterator;
|
|
class const_iterator;
|
|
class reverse_iterator;
|
|
class const_reverse_iterator;
|
|
|
|
// Associative view types
|
|
class assoc_iterator;
|
|
class const_assoc_iterator;
|
|
|
|
// Property tree view types
|
|
typedef typename path_of<Key>::type path_type;
|
|
|
|
|
|
// The big five
|
|
|
|
/** Creates a node with no children and default-constructed data. */
|
|
basic_ptree();
|
|
/** Creates a node with no children and a copy of the given data. */
|
|
explicit basic_ptree(const data_type &data);
|
|
basic_ptree(const self_type &rhs);
|
|
~basic_ptree();
|
|
/** Basic guarantee only. */
|
|
self_type &operator =(const self_type &rhs);
|
|
|
|
/** Swap with other tree. Only constant-time and nothrow if the
|
|
* data type's swap is.
|
|
*/
|
|
void swap(self_type &rhs);
|
|
|
|
// Container view functions
|
|
|
|
/** The number of direct children of this node. */
|
|
size_type size() const;
|
|
size_type max_size() const;
|
|
/** Whether there are any direct children. */
|
|
bool empty() const;
|
|
|
|
iterator begin();
|
|
const_iterator begin() const;
|
|
iterator end();
|
|
const_iterator end() const;
|
|
reverse_iterator rbegin();
|
|
const_reverse_iterator rbegin() const;
|
|
reverse_iterator rend();
|
|
const_reverse_iterator rend() const;
|
|
|
|
value_type &front();
|
|
const value_type &front() const;
|
|
value_type &back();
|
|
const value_type &back() const;
|
|
|
|
/** Insert a copy of the given tree with its key just before the given
|
|
* position in this node. This operation invalidates no iterators.
|
|
* @return An iterator to the newly created child.
|
|
*/
|
|
iterator insert(iterator where, const value_type &value);
|
|
|
|
/** Range insert. Equivalent to:
|
|
* @code
|
|
* for(; first != last; ++first) insert(where, *first);
|
|
* @endcode
|
|
*/
|
|
template<class It> void insert(iterator where, It first, It last);
|
|
|
|
/** Erase the child pointed at by the iterator. This operation
|
|
* invalidates the given iterator, as well as its equivalent
|
|
* assoc_iterator.
|
|
* @return A valid iterator pointing to the element after the erased.
|
|
*/
|
|
iterator erase(iterator where);
|
|
|
|
/** Range erase. Equivalent to:
|
|
* @code
|
|
* while(first != last;) first = erase(first);
|
|
* @endcode
|
|
*/
|
|
iterator erase(iterator first, iterator last);
|
|
|
|
/** Equivalent to insert(begin(), value). */
|
|
iterator push_front(const value_type &value);
|
|
|
|
/** Equivalent to insert(end(), value). */
|
|
iterator push_back(const value_type &value);
|
|
|
|
/** Equivalent to erase(begin()). */
|
|
void pop_front();
|
|
|
|
/** Equivalent to erase(boost::prior(end())). */
|
|
void pop_back();
|
|
|
|
/** Reverses the order of direct children in the property tree. */
|
|
void reverse();
|
|
|
|
/** Sorts the direct children of this node according to the predicate.
|
|
* The predicate is passed the whole pair of key and child.
|
|
*/
|
|
template<class Compare> void sort(Compare comp);
|
|
|
|
/** Sorts the direct children of this node according to key order. */
|
|
void sort();
|
|
|
|
// Equality
|
|
|
|
/** Two property trees are the same if they have the same data, the keys
|
|
* and order of their children are the same, and the children compare
|
|
* equal, recursively.
|
|
*/
|
|
bool operator ==(const self_type &rhs) const;
|
|
bool operator !=(const self_type &rhs) const;
|
|
|
|
// Associative view
|
|
|
|
/** Returns an iterator to the first child, in key order. */
|
|
assoc_iterator ordered_begin();
|
|
/** Returns an iterator to the first child, in key order. */
|
|
const_assoc_iterator ordered_begin() const;
|
|
|
|
/** Returns the not-found iterator. Equivalent to end() in a real
|
|
* associative container.
|
|
*/
|
|
assoc_iterator not_found();
|
|
/** Returns the not-found iterator. Equivalent to end() in a real
|
|
* associative container.
|
|
*/
|
|
const_assoc_iterator not_found() const;
|
|
|
|
/** Find a child with the given key, or not_found() if there is none.
|
|
* There is no guarantee about which child is returned if multiple have
|
|
* the same key.
|
|
*/
|
|
assoc_iterator find(const key_type &key);
|
|
|
|
/** Find a child with the given key, or not_found() if there is none.
|
|
* There is no guarantee about which child is returned if multiple have
|
|
* the same key.
|
|
*/
|
|
const_assoc_iterator find(const key_type &key) const;
|
|
|
|
/** Find the range of children that have the given key. */
|
|
std::pair<assoc_iterator, assoc_iterator>
|
|
equal_range(const key_type &key);
|
|
|
|
/** Find the range of children that have the given key. */
|
|
std::pair<const_assoc_iterator, const_assoc_iterator>
|
|
equal_range(const key_type &key) const;
|
|
|
|
/** Count the number of direct children with the given key. */
|
|
size_type count(const key_type &key) const;
|
|
|
|
/** Erase all direct children with the given key and return the count.
|
|
*/
|
|
size_type erase(const key_type &key);
|
|
|
|
/** Get the iterator that points to the same element as the argument.
|
|
* @note A valid assoc_iterator range (a, b) does not imply that
|
|
* (to_iterator(a), to_iterator(b)) is a valid range.
|
|
*/
|
|
iterator to_iterator(assoc_iterator it);
|
|
|
|
/** Get the iterator that points to the same element as the argument.
|
|
* @note A valid const_assoc_iterator range (a, b) does not imply that
|
|
* (to_iterator(a), to_iterator(b)) is a valid range.
|
|
*/
|
|
const_iterator to_iterator(const_assoc_iterator it) const;
|
|
|
|
// Property tree view
|
|
|
|
/** Reference to the actual data in this node. */
|
|
data_type &data();
|
|
|
|
/** Reference to the actual data in this node. */
|
|
const data_type &data() const;
|
|
|
|
/** Clear this tree completely, of both data and children. */
|
|
void clear();
|
|
|
|
/** Get the child at the given path, or throw @c ptree_bad_path.
|
|
* @note Depending on the path, the result at each level may not be
|
|
* completely deterministic, i.e. if the same key appears multiple
|
|
* times, which child is chosen is not specified. This can lead
|
|
* to the path not being resolved even though there is a
|
|
* descendant with this path. Example:
|
|
* @code
|
|
* a -> b -> c
|
|
* -> b
|
|
* @endcode
|
|
* The path "a.b.c" will succeed if the resolution of "b" chooses
|
|
* the first such node, but fail if it chooses the second.
|
|
*/
|
|
self_type &get_child(const path_type &path);
|
|
|
|
/** Get the child at the given path, or throw @c ptree_bad_path. */
|
|
const self_type &get_child(const path_type &path) const;
|
|
|
|
/** Get the child at the given path, or return @p default_value. */
|
|
self_type &get_child(const path_type &path, self_type &default_value);
|
|
|
|
/** Get the child at the given path, or return @p default_value. */
|
|
const self_type &get_child(const path_type &path,
|
|
const self_type &default_value) const;
|
|
|
|
/** Get the child at the given path, or return boost::null. */
|
|
optional<self_type &> get_child_optional(const path_type &path);
|
|
|
|
/** Get the child at the given path, or return boost::null. */
|
|
optional<const self_type &>
|
|
get_child_optional(const path_type &path) const;
|
|
|
|
/** Set the node at the given path to the given value. Create any
|
|
* missing parents. If the node at the path already exists, replace it.
|
|
* @return A reference to the inserted subtree.
|
|
* @note Because of the way paths work, it is not generally guaranteed
|
|
* that a node newly created can be accessed using the same path.
|
|
* @note If the path could refer to multiple nodes, it is unspecified
|
|
* which one gets replaced.
|
|
*/
|
|
self_type &put_child(const path_type &path, const self_type &value);
|
|
|
|
/** Add the node at the given path. Create any missing parents. If there
|
|
* already is a node at the path, add another one with the same key.
|
|
* @param path Path to the child. The last fragment must not have an
|
|
* index.
|
|
* @return A reference to the inserted subtree.
|
|
* @note Because of the way paths work, it is not generally guaranteed
|
|
* that a node newly created can be accessed using the same path.
|
|
*/
|
|
self_type &add_child(const path_type &path, const self_type &value);
|
|
|
|
/** Take the value of this node and attempt to translate it to a
|
|
* @c Type object using the supplied translator.
|
|
* @throw ptree_bad_data if the conversion fails.
|
|
*/
|
|
template<class Type, class Translator>
|
|
typename boost::enable_if<detail::is_translator<Translator>, Type>::type
|
|
get_value(Translator tr) const;
|
|
|
|
/** Take the value of this node and attempt to translate it to a
|
|
* @c Type object using the default translator.
|
|
* @throw ptree_bad_data if the conversion fails.
|
|
*/
|
|
template<class Type>
|
|
Type get_value() const;
|
|
|
|
/** Take the value of this node and attempt to translate it to a
|
|
* @c Type object using the supplied translator. Return @p default_value
|
|
* if this fails.
|
|
*/
|
|
template<class Type, class Translator>
|
|
Type get_value(const Type &default_value, Translator tr) const;
|
|
|
|
/** Make get_value do the right thing for string literals. */
|
|
template <class Ch, class Translator>
|
|
typename boost::enable_if<
|
|
detail::is_character<Ch>,
|
|
std::basic_string<Ch>
|
|
>::type
|
|
get_value(const Ch *default_value, Translator tr) const;
|
|
|
|
/** Take the value of this node and attempt to translate it to a
|
|
* @c Type object using the default translator. Return @p default_value
|
|
* if this fails.
|
|
*/
|
|
template<class Type>
|
|
typename boost::disable_if<detail::is_translator<Type>, Type>::type
|
|
get_value(const Type &default_value) const;
|
|
|
|
/** Make get_value do the right thing for string literals. */
|
|
template <class Ch>
|
|
typename boost::enable_if<
|
|
detail::is_character<Ch>,
|
|
std::basic_string<Ch>
|
|
>::type
|
|
get_value(const Ch *default_value) const;
|
|
|
|
/** Take the value of this node and attempt to translate it to a
|
|
* @c Type object using the supplied translator. Return boost::null if
|
|
* this fails.
|
|
*/
|
|
template<class Type, class Translator>
|
|
optional<Type> get_value_optional(Translator tr) const;
|
|
|
|
/** Take the value of this node and attempt to translate it to a
|
|
* @c Type object using the default translator. Return boost::null if
|
|
* this fails.
|
|
*/
|
|
template<class Type>
|
|
optional<Type> get_value_optional() const;
|
|
|
|
/** Replace the value at this node with the given value, translated
|
|
* to the tree's data type using the supplied translator.
|
|
* @throw ptree_bad_data if the conversion fails.
|
|
*/
|
|
template<class Type, class Translator>
|
|
void put_value(const Type &value, Translator tr);
|
|
|
|
/** Replace the value at this node with the given value, translated
|
|
* to the tree's data type using the default translator.
|
|
* @throw ptree_bad_data if the conversion fails.
|
|
*/
|
|
template<class Type>
|
|
void put_value(const Type &value);
|
|
|
|
/** Shorthand for get_child(path).get_value(tr). */
|
|
template<class Type, class Translator>
|
|
typename boost::enable_if<detail::is_translator<Translator>, Type>::type
|
|
get(const path_type &path, Translator tr) const;
|
|
|
|
/** Shorthand for get_child(path).get_value\<Type\>(). */
|
|
template<class Type>
|
|
Type get(const path_type &path) const;
|
|
|
|
/** Shorthand for get_child(path, empty_ptree())
|
|
* .get_value(default_value, tr).
|
|
* That is, return the translated value if possible, and the default
|
|
* value if the node doesn't exist or conversion fails.
|
|
*/
|
|
template<class Type, class Translator>
|
|
Type get(const path_type &path,
|
|
const Type &default_value,
|
|
Translator tr) const;
|
|
|
|
/** Make get do the right thing for string literals. */
|
|
template <class Ch, class Translator>
|
|
typename boost::enable_if<
|
|
detail::is_character<Ch>,
|
|
std::basic_string<Ch>
|
|
>::type
|
|
get(const path_type &path, const Ch *default_value, Translator tr)const;
|
|
|
|
/** Shorthand for get_child(path, empty_ptree())
|
|
* .get_value(default_value).
|
|
* That is, return the translated value if possible, and the default
|
|
* value if the node doesn't exist or conversion fails.
|
|
*/
|
|
template<class Type>
|
|
typename boost::disable_if<detail::is_translator<Type>, Type>::type
|
|
get(const path_type &path, const Type &default_value) const;
|
|
|
|
/** Make get do the right thing for string literals. */
|
|
template <class Ch>
|
|
typename boost::enable_if<
|
|
detail::is_character<Ch>,
|
|
std::basic_string<Ch>
|
|
>::type
|
|
get(const path_type &path, const Ch *default_value) const;
|
|
|
|
/** Shorthand for:
|
|
* @code
|
|
* if(optional\<self_type&\> node = get_child_optional(path))
|
|
* return node->get_value_optional(tr);
|
|
* return boost::null;
|
|
* @endcode
|
|
* That is, return the value if it exists and can be converted, or nil.
|
|
*/
|
|
template<class Type, class Translator>
|
|
optional<Type> get_optional(const path_type &path, Translator tr) const;
|
|
|
|
/** Shorthand for:
|
|
* @code
|
|
* if(optional\<const self_type&\> node = get_child_optional(path))
|
|
* return node->get_value_optional();
|
|
* return boost::null;
|
|
* @endcode
|
|
* That is, return the value if it exists and can be converted, or nil.
|
|
*/
|
|
template<class Type>
|
|
optional<Type> get_optional(const path_type &path) const;
|
|
|
|
/** Set the value of the node at the given path to the supplied value,
|
|
* translated to the tree's data type. If the node doesn't exist, it is
|
|
* created, including all its missing parents.
|
|
* @return The node that had its value changed.
|
|
* @throw ptree_bad_data if the conversion fails.
|
|
*/
|
|
template<class Type, class Translator>
|
|
self_type &put(const path_type &path, const Type &value, Translator tr);
|
|
|
|
/** Set the value of the node at the given path to the supplied value,
|
|
* translated to the tree's data type. If the node doesn't exist, it is
|
|
* created, including all its missing parents.
|
|
* @return The node that had its value changed.
|
|
* @throw ptree_bad_data if the conversion fails.
|
|
*/
|
|
template<class Type>
|
|
self_type &put(const path_type &path, const Type &value);
|
|
|
|
/** If the node identified by the path does not exist, create it,
|
|
* including all its missing parents.
|
|
* If the node already exists, add a sibling with the same key.
|
|
* Set the newly created node's value to the given paremeter,
|
|
* translated with the supplied translator.
|
|
* @param path Path to the child. The last fragment must not have an
|
|
* index.
|
|
* @param value The value to add.
|
|
* @param tr The translator to use.
|
|
* @return The node that was added.
|
|
* @throw ptree_bad_data if the conversion fails.
|
|
*/
|
|
template<class Type, class Translator>
|
|
self_type &add(const path_type &path,
|
|
const Type &value,
|
|
Translator tr);
|
|
|
|
/** If the node identified by the path does not exist, create it,
|
|
* including all its missing parents.
|
|
* If the node already exists, add a sibling with the same key.
|
|
* Set the newly created node's value to the given paremeter,
|
|
* translated with the supplied translator.
|
|
* @param path Path to the child. The last fragment must not have an
|
|
* index.
|
|
* @param value The value to add.
|
|
* @return The node that was added.
|
|
* @throw ptree_bad_data if the conversion fails.
|
|
*/
|
|
template<class Type>
|
|
self_type &add(const path_type &path, const Type &value);
|
|
|
|
private:
|
|
// Hold the data of this node
|
|
data_type m_data;
|
|
// Hold the children - this is a void* because we can't complete the
|
|
// container type within the class.
|
|
void* m_children;
|
|
|
|
// Getter tree-walk. Not const-safe! Gets the node the path refers to,
|
|
// or null. Destroys p's value.
|
|
self_type* walk_path(path_type& p) const;
|
|
|
|
// Modifer tree-walk. Gets the parent of the node referred to by the
|
|
// path, creating nodes as necessary. p is the path to the remaining
|
|
// child.
|
|
self_type& force_path(path_type& p);
|
|
|
|
// This struct contains typedefs for the concrete types.
|
|
struct subs;
|
|
friend struct subs;
|
|
friend class iterator;
|
|
friend class const_iterator;
|
|
friend class reverse_iterator;
|
|
friend class const_reverse_iterator;
|
|
};
|
|
|
|
}}
|
|
|
|
#include <boost/property_tree/detail/ptree_implementation.hpp>
|
|
|
|
#endif
|