Master commit of OpenFace.

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2016-04-28 15:40:36 -04:00
parent 5346d303ab
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// Copyright (C) 2005 Davis E. King (davis@dlib.net)
// License: Boost Software License See LICENSE.txt for the full license.
#ifndef DLIB_STATIC_SET_COMPARe_1_
#define DLIB_STATIC_SET_COMPARe_1_
#include "static_set_compare_abstract.h"
#include "../algs.h"
namespace dlib
{
template <
typename static_set_base
>
class static_set_compare_1 : public static_set_base
{
public:
bool operator< (
const static_set_compare_1& rhs
) const;
bool operator== (
const static_set_compare_1& rhs
) const;
};
template <
typename static_set_base
>
inline void swap (
static_set_compare_1<static_set_base>& a,
static_set_compare_1<static_set_base>& b
) { a.swap(b); }
// ----------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------------
// member function definitions
// ----------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------------
template <
typename static_set_base
>
bool static_set_compare_1<static_set_base>::
operator< (
const static_set_compare_1<static_set_base>& rhs
) const
{
bool result = false;
if (static_set_base::size() < rhs.size())
result = true;
if (static_set_base::size() == rhs.size())
{
rhs.reset();
static_set_base::reset();
while (rhs.move_next())
{
static_set_base::move_next();
if (static_set_base::element() < rhs.element())
{
result = true;
break;
}
else if (rhs.element() < static_set_base::element())
{
break;
}
}
}
static_set_base::reset();
rhs.reset();
return result;
}
// ----------------------------------------------------------------------------------------
template <
typename static_set_base
>
bool static_set_compare_1<static_set_base>::
operator== (
const static_set_compare_1<static_set_base>& rhs
) const
{
bool result = true;
if (static_set_base::size() != rhs.size())
result = false;
rhs.reset();
static_set_base::reset();
while (rhs.move_next() && static_set_base::move_next())
{
if (!(rhs.element() == static_set_base::element()))
{
result = false;
break;
}
}
static_set_base::reset();
rhs.reset();
return result;
}
// ----------------------------------------------------------------------------------------
}
#endif // DLIB_STATIC_SET_COMPARe_1_

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// Copyright (C) 2005 Davis E. King (davis@dlib.net)
// License: Boost Software License See LICENSE.txt for the full license.
#undef DLIB_STATIC_SET_COMPARe_ABSTRACT_
#ifdef DLIB_STATIC_SET_COMPARe_ABSTRACT_
#include "static_set_kernel_abstract.h"
#include "../algs.h"
namespace dlib
{
template <
typename static_set_base
>
class static_set_compare : public static_set_base
{
/*!
REQUIREMENTS ON static_set_base
must an implementation of static_set/static_set_kernel_abstract.h
POINTERS AND REFERENCES TO INTERNAL DATA
operator== and operator< invalidate pointers or references to
data members.
WHAT THIS EXTENSION DOES FOR static_set
This gives a static_set the ability to compare itself to other
static_sets using the < and == operators.
The < operator is conceptually weird for sets. It is useful
though because it allows you to make sets of sets since
sets require that their containing type implement operator<.
Also note that it is the case that for any two sets a and b
if (a<b) == false and (b<a) == false then a == b.
NOTATION
For the purposes of defining what these operators do I will
use the operator[] to reference the elements of the static_sets.
operator[] is defined to access the elements of the static_set in
the same order they would be enumerated by the enumerable
interface.
!*/
public:
bool operator< (
const static_set_compare& rhs
) const;
/*!
ensures
- #at_start() == true
- if (size() < rhs.size()) then
- returns true
- else if (size() > rhs.size()) then
- returns false
- else
- returns true if there exists an integer j such that 0 <= j < size()
and for all integers i such that 0 <= i < j where it is true that
(*this)[i] == rhs[i] and (*this)[j] < rhs[j]
- returns false if there is no j that will satisfy the above conditions.
!*/
bool operator== (
const static_set_compare& rhs
) const;
/*!
ensures
- #at_start() == true
- returns true if *this and rhs contain the same elements.
returns false otherwise.
!*/
};
template <
typename static_set_base
>
inline void swap (
static_set_compare<static_set_base>& a,
static_set_compare<static_set_base>& b
) { a.swap(b); }
/*!
provides a global swap function
!*/
}
#endif // DLIB_STATIC_SET_COMPARe_ABSTRACT_

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// Copyright (C) 2005 Davis E. King (davis@dlib.net)
// License: Boost Software License See LICENSE.txt for the full license.
#ifndef DLIB_STATIC_SET_KERNEl_1_
#define DLIB_STATIC_SET_KERNEl_1_
#include "static_set_kernel_abstract.h"
#include "../interfaces/enumerable.h"
#include "../interfaces/remover.h"
#include "../algs.h"
#include "../sort.h"
#include "../serialize.h"
#include <functional>
namespace dlib
{
template <
typename T,
typename compare = std::less<T>
>
class static_set_kernel_1 : public enumerable<const T>
{
/*!
INITIAL VALUE
- set_size == 0
- d == 0
- at_start_ == true
- cur == 0
CONVENTION
- size() == set_size
- if (set_size > 0) then
- d == pointer to an array containing all the elements of the set
- d is sorted according to operator<
- else
- d == 0
- current_element_valid() == (cur != 0)
- at_start() == (at_start_)
- if (current_element_valid()) then
- element() == *cur
!*/
// I would define this outside the class but Borland 5.5 has some problems
// with non-inline templated friend functions.
friend void deserialize (
static_set_kernel_1& item,
std::istream& in
)
{
try
{
item.clear();
unsigned long size;
deserialize(size,in);
item.set_size = size;
item.d = new T[size];
for (unsigned long i = 0; i < size; ++i)
{
deserialize(item.d[i],in);
}
}
catch (serialization_error e)
{
item.set_size = 0;
if (item.d)
{
delete [] item.d;
item.d = 0;
}
throw serialization_error(e.info + "\n while deserializing object of type static_set_kernel_1");
}
catch (...)
{
item.set_size = 0;
if (item.d)
{
delete [] item.d;
item.d = 0;
}
throw;
}
}
public:
typedef T type;
typedef compare compare_type;
static_set_kernel_1(
);
virtual ~static_set_kernel_1(
);
void clear (
);
void load (
remover<T>& source
);
void load (
asc_remover<T,compare>& source
);
bool is_member (
const T& item
) const;
inline void swap (
static_set_kernel_1& item
);
// functions from the enumerable interface
inline unsigned long size (
) const;
inline bool at_start (
) const;
inline void reset (
) const;
inline bool current_element_valid (
) const;
inline const T& element (
) const;
inline const T& element (
);
inline bool move_next (
) const;
private:
// data members
unsigned long set_size;
T* d;
mutable T* cur;
mutable bool at_start_;
// restricted functions
static_set_kernel_1(static_set_kernel_1&); // copy constructor
static_set_kernel_1& operator=(static_set_kernel_1&); // assignment operator
};
template <
typename T,
typename compare
>
inline void swap (
static_set_kernel_1<T,compare>& a,
static_set_kernel_1<T,compare>& b
) { a.swap(b); }
// ----------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------------
// member function definitions
// ----------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------------
template <
typename T,
typename compare
>
static_set_kernel_1<T,compare>::
static_set_kernel_1(
) :
set_size(0),
d(0),
cur(0),
at_start_(true)
{
}
// ----------------------------------------------------------------------------------------
template <
typename T,
typename compare
>
static_set_kernel_1<T,compare>::
~static_set_kernel_1(
)
{
if (set_size > 0)
delete [] d;
}
// ----------------------------------------------------------------------------------------
template <
typename T,
typename compare
>
void static_set_kernel_1<T,compare>::
clear(
)
{
if (set_size > 0)
{
set_size = 0;
delete [] d;
d = 0;
}
reset();
}
// ----------------------------------------------------------------------------------------
template <
typename T,
typename compare
>
void static_set_kernel_1<T,compare>::
load (
remover<T>& source
)
{
if (source.size() > 0)
{
d = new T[source.size()];
set_size = source.size();
for (unsigned long i = 0; source.size() > 0; ++i)
source.remove_any(d[i]);
compare comp;
qsort_array(d,0,set_size-1,comp);
}
else
{
clear();
}
reset();
}
// ----------------------------------------------------------------------------------------
template <
typename T,
typename compare
>
void static_set_kernel_1<T,compare>::
load (
asc_remover<T,compare>& source
)
{
if (source.size() > 0)
{
d = new T[source.size()];
set_size = source.size();
for (unsigned long i = 0; source.size() > 0; ++i)
source.remove_any(d[i]);
}
else
{
clear();
}
reset();
}
// ----------------------------------------------------------------------------------------
template <
typename T,
typename compare
>
bool static_set_kernel_1<T,compare>::
is_member (
const T& item
) const
{
unsigned long high = set_size;
unsigned long low = 0;
unsigned long p = set_size;
unsigned long idx;
while (p > 0)
{
p = (high-low)>>1;
idx = p+low;
if (item < d[idx])
high = idx;
else if (d[idx] < item)
low = idx;
else
return true;
}
return false;
}
// ----------------------------------------------------------------------------------------
template <
typename T,
typename compare
>
unsigned long static_set_kernel_1<T,compare>::
size (
) const
{
return set_size;
}
// ----------------------------------------------------------------------------------------
template <
typename T,
typename compare
>
void static_set_kernel_1<T,compare>::
swap (
static_set_kernel_1<T,compare>& item
)
{
exchange(set_size,item.set_size);
exchange(d,item.d);
exchange(cur,item.cur);
exchange(at_start_,item.at_start_);
}
// ----------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------------
// enumerable function definitions
// ----------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------------
template <
typename T,
typename compare
>
bool static_set_kernel_1<T,compare>::
at_start (
) const
{
return at_start_;
}
// ----------------------------------------------------------------------------------------
template <
typename T,
typename compare
>
void static_set_kernel_1<T,compare>::
reset (
) const
{
at_start_ = true;
cur = 0;
}
// ----------------------------------------------------------------------------------------
template <
typename T,
typename compare
>
bool static_set_kernel_1<T,compare>::
current_element_valid (
) const
{
return (cur != 0);
}
// ----------------------------------------------------------------------------------------
template <
typename T,
typename compare
>
const T& static_set_kernel_1<T,compare>::
element (
) const
{
return *cur;
}
// ----------------------------------------------------------------------------------------
template <
typename T,
typename compare
>
const T& static_set_kernel_1<T,compare>::
element (
)
{
return *cur;
}
// ----------------------------------------------------------------------------------------
template <
typename T,
typename compare
>
bool static_set_kernel_1<T,compare>::
move_next (
) const
{
// if at_start() && size() > 0
if (at_start_ && set_size > 0)
{
at_start_ = false;
cur = d;
return true;
}
// else if current_element_valid()
else if (cur != 0)
{
++cur;
if (static_cast<unsigned long>(cur - d) < set_size)
{
return true;
}
else
{
cur = 0;
return false;
}
}
else
{
at_start_ = false;
return false;
}
}
// ----------------------------------------------------------------------------------------
}
#endif // DLIB_STATIC_SET_KERNEl_1_

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// Copyright (C) 2005 Davis E. King (davis@dlib.net)
// License: Boost Software License See LICENSE.txt for the full license.
#undef DLIB_STATIC_SET_KERNEl_ABSTRACT_
#ifdef DLIB_STATIC_SET_KERNEl_ABSTRACT_
#include "../interfaces/enumerable.h"
#include "../interfaces/remover.h"
#include "../serialize.h"
#include <functional>
namespace dlib
{
template <
typename T,
typename compare = std::less<T>
>
class static_set : public enumerable<const T>
{
/*!
REQUIREMENTS ON T
T must be comparable by compare where compare is a functor compatible with std::less and
T is swappable by a global swap() and
T must have a default constructor
POINTERS AND REFERENCES TO INTERNAL DATA
Only the destructor will invalidate pointers or references
to internal data.
INITIAL VALUE
size() == 0
ENUMERATION ORDER
The enumerator will iterate over the elements in the set in
ascending order according to the compare functor.
(i.e. the elements are enumerated in sorted order)
WHAT THIS OBJECT REPRESENTS
static_set contains items of type T
This object represents an unaddressed collection of items.
Also note that unless specified otherwise, no member functions
of this object throw exceptions.
NOTE
definition of equivalent:
a is equivalent to b if
a < b == false and
b < a == false
!*/
public:
typedef T type;
typedef compare compare_type;
static_set (
);
/*!
ensures
- #*this is properly initialized
throws
- std::bad_alloc or any exception thrown by T's constructor.
!*/
virtual ~static_set(
);
/*!
ensures
- all memory associated with *this has been released
!*/
void clear(
);
/*!
ensures
- #*this has its initial value
throws
- std::bad_alloc or any exception thrown by T's constructor.
If this exception is thrown then #*this is unusable
until clear() is called and succeeds.
!*/
void load (
remover<T>& source
);
/*!
ensures
- #size() == source.size()
- #source.size() == 0
- all the elements in source are removed and placed into #*this
- #at_start() == true
throws
- std::bad_alloc or any exception thrown by T's constructor.
If this exception is thrown then the call to load() will have
no effect on #*this.
!*/
bool is_member (
const T& item
) const;
/*!
ensures
- if (there is an item in *this equivalent to item) then
- returns true
- else
- returns false
!*/
void swap (
static_set& item
);
/*!
ensures
- swaps *this and item
!*/
private:
// restricted functions
static_set(static_set&); // copy constructor
static_set& operator=(static_set&); // assignment operator
};
template <
typename T,
typename compare
>
inline void swap (
static_set<T,compare>& a,
static_set<T,compare>& b
) { a.swap(b); }
/*!
provides a global swap function
!*/
template <
typename T,
typename compare
>
void deserialize (
static_set<T,compare>& item,
std::istream& in
);
/*!
provides deserialization support
!*/
}
#endif // DLIB_STATIC_SET_KERNEl_ABSTRACT_

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// Copyright (C) 2005 Davis E. King (davis@dlib.net)
// License: Boost Software License See LICENSE.txt for the full license.
#ifndef DLIB_STATIC_SET_KERNEl_C_
#define DLIB_STATIC_SET_KERNEl_C_
#include "static_set_kernel_abstract.h"
#include "../algs.h"
#include "../assert.h"
#include "../interfaces/remover.h"
namespace dlib
{
template <
typename set_base
>
class static_set_kernel_c : public set_base
{
typedef typename set_base::type T;
public:
const T& element (
);
const T& element (
) const;
};
template <
typename set_base
>
inline void swap (
static_set_kernel_c<set_base>& a,
static_set_kernel_c<set_base>& b
) { a.swap(b); }
// ----------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------------
// member function definitions
// ----------------------------------------------------------------------------------------
// ----------------------------------------------------------------------------------------
template <
typename set_base
>
const typename set_base::type& static_set_kernel_c<set_base>::
element (
) const
{
// make sure requires clause is not broken
DLIB_CASSERT(this->current_element_valid() == true,
"\tconst T& static_set::element() const"
<< "\n\tyou can't access the current element if it doesn't exist"
<< "\n\tthis: " << this
);
// call the real function
return set_base::element();
}
// ----------------------------------------------------------------------------------------
template <
typename set_base
>
const typename set_base::type& static_set_kernel_c<set_base>::
element (
)
{
// make sure requires clause is not broken
DLIB_CASSERT(this->current_element_valid() == true,
"\tconst T& static_set::element"
<< "\n\tyou can't access the current element if it doesn't exist"
<< "\n\tthis: " << this
);
// call the real function
return set_base::element();
}
// ----------------------------------------------------------------------------------------
}
#endif // DLIB_STATIC_SET_KERNEl_C_