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prevector< N, T, Size, Diff > Class Template Reference

#include <prevector.h>

+ Inheritance diagram for prevector< N, T, Size, Diff >:

Classes

class  const_iterator
 
class  const_reverse_iterator
 
union  direct_or_indirect
 
class  iterator
 
class  reverse_iterator
 

Public Types

typedef Size size_type
 
typedef Diff difference_type
 
typedef T value_type
 
typedef value_typereference
 
typedef const value_typeconst_reference
 
typedef value_typepointer
 
typedef const value_typeconst_pointer
 

Public Member Functions

void assign (size_type n, const T &val)
 
template<typename InputIterator >
void assign (InputIterator first, InputIterator last)
 
 prevector ()
 
 prevector (size_type n)
 
 prevector (size_type n, const T &val=T())
 
template<typename InputIterator >
 prevector (InputIterator first, InputIterator last)
 
 prevector (const prevector< N, T, Size, Diff > &other)
 
prevectoroperator= (const prevector< N, T, Size, Diff > &other)
 
size_type size () const
 
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
 
size_t capacity () const
 
T & operator[] (size_type pos)
 
const T & operator[] (size_type pos) const
 
void resize (size_type new_size)
 
void reserve (size_type new_capacity)
 
void shrink_to_fit ()
 
void clear ()
 
iterator insert (iterator pos, const T &value)
 
void insert (iterator pos, size_type count, const T &value)
 
template<typename InputIterator >
void insert (iterator pos, InputIterator first, InputIterator last)
 
iterator erase (iterator pos)
 
iterator erase (iterator first, iterator last)
 
void push_back (const T &value)
 
void pop_back ()
 
T & front ()
 
const T & front () const
 
T & back ()
 
const T & back () const
 
void swap (prevector< N, T, Size, Diff > &other)
 
 ~prevector ()
 
bool operator== (const prevector< N, T, Size, Diff > &other) const
 
bool operator!= (const prevector< N, T, Size, Diff > &other) const
 
bool operator< (const prevector< N, T, Size, Diff > &other) const
 
size_t allocated_memory () const
 

Private Member Functions

T * direct_ptr (difference_type pos)
 
const T * direct_ptr (difference_type pos) const
 
T * indirect_ptr (difference_type pos)
 
const T * indirect_ptr (difference_type pos) const
 
bool is_direct () const
 
void change_capacity (size_type new_capacity)
 
T * item_ptr (difference_type pos)
 
const T * item_ptr (difference_type pos) const
 

Private Attributes

size_type _size
 
union prevector::direct_or_indirect _union
 

Detailed Description

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
class prevector< N, T, Size, Diff >

Implements a drop-in replacement for std::vector<T> which stores up to N elements directly (without heap allocation). The types Size and Diff are used to store element counts, and can be any unsigned + signed type.

Storage layout is either:

  • Direct allocation:
    • Size _size: the number of used elements (between 0 and N)
    • T direct[N]: an array of N elements of type T (only the first _size are initialized).
  • Indirect allocation:
    • Size _size: the number of used elements plus N + 1
    • Size capacity: the number of allocated elements
    • T* indirect: a pointer to an array of capacity elements of type T (only the first _size are initialized).

The data type T must be movable by memmove/realloc(). Once we switch to C++, move constructors can be used instead.

Definition at line 30 of file prevector.h.

Member Typedef Documentation

◆ const_pointer

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
typedef const value_type* prevector< N, T, Size, Diff >::const_pointer

Definition at line 38 of file prevector.h.

◆ const_reference

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
typedef const value_type& prevector< N, T, Size, Diff >::const_reference

Definition at line 36 of file prevector.h.

◆ difference_type

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
typedef Diff prevector< N, T, Size, Diff >::difference_type

Definition at line 33 of file prevector.h.

◆ pointer

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
typedef value_type* prevector< N, T, Size, Diff >::pointer

Definition at line 37 of file prevector.h.

◆ reference

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
typedef value_type& prevector< N, T, Size, Diff >::reference

Definition at line 35 of file prevector.h.

◆ size_type

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
typedef Size prevector< N, T, Size, Diff >::size_type

Definition at line 32 of file prevector.h.

◆ value_type

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
typedef T prevector< N, T, Size, Diff >::value_type

Definition at line 34 of file prevector.h.

Constructor & Destructor Documentation

◆ prevector() [1/5]

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
prevector< N, T, Size, Diff >::prevector ( )
inline

Definition at line 212 of file prevector.h.

◆ prevector() [2/5]

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
prevector< N, T, Size, Diff >::prevector ( size_type  n)
inlineexplicit

Definition at line 214 of file prevector.h.

◆ prevector() [3/5]

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
prevector< N, T, Size, Diff >::prevector ( size_type  n,
const T &  val = T() 
)
inlineexplicit

Definition at line 218 of file prevector.h.

◆ prevector() [4/5]

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
template<typename InputIterator >
prevector< N, T, Size, Diff >::prevector ( InputIterator  first,
InputIterator  last 
)
inline

Definition at line 227 of file prevector.h.

◆ prevector() [5/5]

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
prevector< N, T, Size, Diff >::prevector ( const prevector< N, T, Size, Diff > &  other)
inline

Definition at line 237 of file prevector.h.

◆ ~prevector()

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
prevector< N, T, Size, Diff >::~prevector ( )
inline

Definition at line 415 of file prevector.h.

Member Function Documentation

◆ allocated_memory()

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
size_t prevector< N, T, Size, Diff >::allocated_memory ( ) const
inline

Definition at line 467 of file prevector.h.

Referenced by memusage::DynamicUsage().

◆ assign() [1/2]

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
void prevector< N, T, Size, Diff >::assign ( size_type  n,
const T &  val 
)
inline

Definition at line 187 of file prevector.h.

◆ assign() [2/2]

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
template<typename InputIterator >
void prevector< N, T, Size, Diff >::assign ( InputIterator  first,
InputIterator  last 
)
inline

Definition at line 199 of file prevector.h.

◆ back() [1/2]

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
T& prevector< N, T, Size, Diff >::back ( )
inline

Definition at line 402 of file prevector.h.

Referenced by CombineSignatures().

◆ back() [2/2]

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
const T& prevector< N, T, Size, Diff >::back ( ) const
inline

Definition at line 406 of file prevector.h.

◆ begin() [1/2]

◆ begin() [2/2]

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
const_iterator prevector< N, T, Size, Diff >::begin ( ) const
inline

Definition at line 271 of file prevector.h.

◆ capacity()

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
size_t prevector< N, T, Size, Diff >::capacity ( ) const
inline

◆ change_capacity()

◆ clear()

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
void prevector< N, T, Size, Diff >::clear ( )
inline

◆ direct_ptr() [1/2]

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
T* prevector< N, T, Size, Diff >::direct_ptr ( difference_type  pos)
inlineprivate

◆ direct_ptr() [2/2]

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
const T* prevector< N, T, Size, Diff >::direct_ptr ( difference_type  pos) const
inlineprivate

Definition at line 152 of file prevector.h.

◆ empty()

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
bool prevector< N, T, Size, Diff >::empty ( ) const
inline

◆ end() [1/2]

◆ end() [2/2]

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
const_iterator prevector< N, T, Size, Diff >::end ( ) const
inline

Definition at line 273 of file prevector.h.

◆ erase() [1/2]

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
iterator prevector< N, T, Size, Diff >::erase ( iterator  pos)
inline

◆ erase() [2/2]

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
iterator prevector< N, T, Size, Diff >::erase ( iterator  first,
iterator  last 
)
inline

Definition at line 369 of file prevector.h.

◆ front() [1/2]

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
T& prevector< N, T, Size, Diff >::front ( )
inline

Definition at line 394 of file prevector.h.

◆ front() [2/2]

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
const T& prevector< N, T, Size, Diff >::front ( ) const
inline

Definition at line 398 of file prevector.h.

◆ indirect_ptr() [1/2]

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
T* prevector< N, T, Size, Diff >::indirect_ptr ( difference_type  pos)
inlineprivate

◆ indirect_ptr() [2/2]

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
const T* prevector< N, T, Size, Diff >::indirect_ptr ( difference_type  pos) const
inlineprivate

Definition at line 154 of file prevector.h.

◆ insert() [1/3]

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
iterator prevector< N, T, Size, Diff >::insert ( iterator  pos,
const T &  value 
)
inline

Definition at line 323 of file prevector.h.

Referenced by CombineMultisig(), CScript::operator+=(), and CScript::operator<<().

◆ insert() [2/3]

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
void prevector< N, T, Size, Diff >::insert ( iterator  pos,
size_type  count,
const T &  value 
)
inline

Definition at line 335 of file prevector.h.

◆ insert() [3/3]

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
template<typename InputIterator >
void prevector< N, T, Size, Diff >::insert ( iterator  pos,
InputIterator  first,
InputIterator  last 
)
inline

Definition at line 349 of file prevector.h.

◆ is_direct()

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
bool prevector< N, T, Size, Diff >::is_direct ( ) const
inlineprivate

◆ item_ptr() [1/2]

◆ item_ptr() [2/2]

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
const T* prevector< N, T, Size, Diff >::item_ptr ( difference_type  pos) const
inlineprivate

Definition at line 184 of file prevector.h.

◆ operator!=()

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
bool prevector< N, T, Size, Diff >::operator!= ( const prevector< N, T, Size, Diff > &  other) const
inline

Definition at line 440 of file prevector.h.

◆ operator<()

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
bool prevector< N, T, Size, Diff >::operator< ( const prevector< N, T, Size, Diff > &  other) const
inline

Definition at line 444 of file prevector.h.

◆ operator=()

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
prevector& prevector< N, T, Size, Diff >::operator= ( const prevector< N, T, Size, Diff > &  other)
inline

Definition at line 247 of file prevector.h.

◆ operator==()

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
bool prevector< N, T, Size, Diff >::operator== ( const prevector< N, T, Size, Diff > &  other) const
inline

Definition at line 423 of file prevector.h.

◆ operator[]() [1/2]

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
T& prevector< N, T, Size, Diff >::operator[] ( size_type  pos)
inline

Definition at line 288 of file prevector.h.

◆ operator[]() [2/2]

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
const T& prevector< N, T, Size, Diff >::operator[] ( size_type  pos) const
inline

Definition at line 292 of file prevector.h.

◆ pop_back()

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
void prevector< N, T, Size, Diff >::pop_back ( )
inline

Definition at line 390 of file prevector.h.

◆ push_back()

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
void prevector< N, T, Size, Diff >::push_back ( const T &  value)
inline

◆ rbegin() [1/2]

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
reverse_iterator prevector< N, T, Size, Diff >::rbegin ( )
inline

Definition at line 275 of file prevector.h.

◆ rbegin() [2/2]

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
const_reverse_iterator prevector< N, T, Size, Diff >::rbegin ( ) const
inline

Definition at line 276 of file prevector.h.

◆ rend() [1/2]

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
reverse_iterator prevector< N, T, Size, Diff >::rend ( )
inline

Definition at line 277 of file prevector.h.

◆ rend() [2/2]

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
const_reverse_iterator prevector< N, T, Size, Diff >::rend ( ) const
inline

Definition at line 278 of file prevector.h.

◆ reserve()

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
void prevector< N, T, Size, Diff >::reserve ( size_type  new_capacity)
inline

Definition at line 309 of file prevector.h.

◆ resize()

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
void prevector< N, T, Size, Diff >::resize ( size_type  new_size)
inline

◆ shrink_to_fit()

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
void prevector< N, T, Size, Diff >::shrink_to_fit ( )
inline

Definition at line 315 of file prevector.h.

◆ size()

◆ swap()

template<unsigned int N, typename T, typename Size = uint32_t, typename Diff = int32_t>
void prevector< N, T, Size, Diff >::swap ( prevector< N, T, Size, Diff > &  other)
inline

Definition at line 410 of file prevector.h.

Referenced by CScriptCheck::swap().

Member Data Documentation

◆ _size

◆ _union


The documentation for this class was generated from the following file: