Linked list

develop
Ben Lubar 2018-06-16 17:30:07 -05:00
parent 1a4440859c
commit 31d22967f8
No known key found for this signature in database
GPG Key ID: 018BAB45DB2D2B24
3 changed files with 300 additions and 2 deletions

@ -25,12 +25,14 @@ distribution.
#pragma once
#include "Pragma.h"
#include "Export.h"
#include "Error.h"
#include <stdint.h>
#include <string.h>
#include <stdlib.h>
#include <sstream>
#include <exception>
//#include <ostream>
#include <type_traits>
#include <iterator>
namespace DFHack
{
template <typename T = int>
@ -232,4 +234,299 @@ namespace DFHack
m_data[idx] = item;
}
};
template <typename L, typename I>
struct DfLinkedList
{
class iterator;
class const_iterator;
class proxy
{
L *root;
L *prev;
friend class iterator;
proxy(L *root, L *prev) : root(root), prev(prev)
{
CHECK_NULL_POINTER(root);
CHECK_NULL_POINTER(prev);
}
public:
operator I * & ()
{
CHECK_NULL_POINTER(prev->next);
return prev->next->item;
}
operator I *() const
{
CHECK_NULL_POINTER(prev->next);
return prev->next->item;
}
I *operator->() const
{
CHECK_NULL_POINTER(prev->next);
return prev->next->item;
}
proxy & operator=(I *item)
{
if (!prev->next)
{
prev->next = df::allocate<L>();
if (prev != root)
prev->next->prev = prev;
}
prev->next->item = item;
return *this;
}
};
class iterator
{
L *root;
L *prev;
bool next;
friend struct DfLinkedList<L, I>;
friend class const_iterator;
iterator() : root(nullptr), prev(nullptr), next(false) {}
public:
using difference_type = void;
using value_type = I *;
using pointer = I **;
using reference = proxy;
using iterator_category = std::output_iterator_tag;
iterator(L *root, L *prev, bool next = false) : root(root), prev(prev), next(next) {}
iterator(const iterator & other) : root(other.root), prev(other.prev), next(other.next) {}
iterator & operator++()
{
CHECK_NULL_POINTER(root);
CHECK_NULL_POINTER(prev);
CHECK_NULL_POINTER(prev->next);
if (!next && !prev->next->next)
{
next = true;
return *this;
}
CHECK_NULL_POINTER(prev->next->next);
prev = prev->next;
return *this;
}
iterator & operator--()
{
CHECK_NULL_POINTER(root);
if (next)
{
next = false;
return *this;
}
CHECK_NULL_POINTER(prev);
if (prev == root)
{
throw DFHack::Error::NullPointer("prev->prev", DFHACK_FUNCTION_SIG);
}
if (root->next == prev)
{
prev = root;
return *this;
}
if (prev->prev)
{
prev = prev->prev;
return *this;
}
for (L *it = root; it->next; it = it->next)
{
if (it->next == prev)
{
prev = it;
return *this;
}
}
throw DFHack::Error::NullPointer("prev->prev", DFHACK_FUNCTION_SIG);
}
iterator operator++(int)
{
iterator copy(*this);
++*this;
return copy;
}
iterator operator--(int)
{
iterator copy(*this);
--*this;
return copy;
}
iterator & operator=(const iterator & other)
{
root = other.root;
prev = other.prev;
next = other.next;
return *this;
}
proxy operator*()
{
CHECK_NULL_POINTER(prev);
CHECK_NULL_POINTER(prev->next);
if (next)
return proxy(root, prev->next);
return proxy(root, prev);
}
const proxy operator*() const
{
CHECK_NULL_POINTER(prev);
CHECK_NULL_POINTER(prev->next);
if (next)
return proxy(root, prev->next);
return proxy(root, prev);
}
I * operator->() const
{
return **this;
}
operator const_iterator() const
{
return const_iterator(*this);
}
bool operator==(const iterator & other) const
{
if (root != other.root)
return false;
if (other.next && !next)
return prev && other.prev && prev->next == other.prev;
if (next && !other.next)
return prev && other.prev && other.prev->next == prev;
return other.prev == prev;
}
bool operator!=(const iterator & other) const
{
return !(*this == other);
}
};
class const_iterator
{
iterator iter;
friend struct DfLinkedList<L, I>;
public:
using difference_type = void;
using value_type = I * ;
using pointer = I * const *;
using reference = const proxy;
using iterator_category = std::bidirectional_iterator_tag;
const_iterator(const iterator & iter) : iter(iter) {}
const_iterator(const const_iterator & other) : iter(other.iter) {}
const_iterator & operator++()
{
++iter;
return *this;
}
const_iterator & operator--()
{
--iter;
return *this;
}
const_iterator operator++(int)
{
const_iterator copy(*this);
++*this;
return copy;
}
const_iterator operator--(int)
{
const_iterator copy(*this);
--*this;
return copy;
}
const_iterator & operator=(const const_iterator & other)
{
iter = other.iter;
return *this;
}
const proxy operator*() const
{
return *iter;
}
I *operator->() const
{
return *iter;
}
bool operator==(const const_iterator & other) const
{
return iter == other.iter;
}
bool operator!=(const const_iterator & other) const
{
return iter != other.iter;
}
};
typedef I *value_type;
typedef I * & reference_type;
typedef void difference_type;
typedef size_t size_type;
bool empty() const
{
return static_cast<const L *>(this)->next == nullptr;
}
size_t size() const
{
size_t n = 0;
for (I *i : *this)
n++;
return n;
}
iterator begin()
{
return iterator(static_cast<L *>(this), static_cast<L *>(this));
}
const_iterator begin() const
{
return const_iterator(const_cast<DfLinkedList<L, I> *>(this)->begin());
}
const_iterator cbegin() const
{
return begin();
}
iterator end()
{
L *it = static_cast<L *>(this);
while (it->next && it->next->next)
{
it = it->next;
}
return iterator(static_cast<L *>(this), it, true);
}
const_iterator end() const
{
return const_iterator(const_cast<DfLinkedList<L, I> *>(this)->end());
}
const_iterator cend() const
{
return end();
}
};
}

@ -439,6 +439,7 @@ namespace df
using DFHack::enum_list_attr;
using DFHack::BitArray;
using DFHack::DfArray;
using DFHack::DfLinkedList;
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wdelete-non-virtual-dtor"

@ -1 +1 @@
Subproject commit 8e19a41d946cc1a82339da669ab7c4f6042afa8f
Subproject commit 83142467d76f0e642455bcb083ea661fbf44098f