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Rename CLIST_ITERATOR to ITERATOR and CLIST_LINK to LINK, so they can be accessed as CLIST::ITERATOR etc.

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This commit is contained in:
Egor Pugin 2024-11-22 04:39:32 +03:00
parent dad0fefc11
commit bb774797ce
1 changed files with 76 additions and 78 deletions
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154
src/ccutil/clst.h
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@ -35,13 +35,13 @@ namespace tesseract {
template <typename CLASSNAME>
class TESS_API CLIST {
friend class CLIST_LINK;
//friend class CLIST_ITERATOR;
friend class LINK;
//friend class ITERATOR;
public:
/**********************************************************************
* CLASS - CLIST_LINK
* CLASS - LINK
*
* Generic link class for singly linked CONS cell lists
*
@ -49,33 +49,33 @@ public:
* they have been extracted from a list OR by the CLIST destructor which
* walks the list.
**********************************************************************/
struct CLIST_LINK {
CLIST_LINK *next{};
struct LINK {
LINK *next{};
CLASSNAME *data{};
CLIST_LINK() = default;
CLIST_LINK(const CLIST_LINK &) = delete;
void operator=(const CLIST_LINK &) = delete;
LINK() = default;
LINK(const LINK &) = delete;
void operator=(const LINK &) = delete;
};
/***********************************************************************
* CLASS - CLIST_ITERATOR
* CLASS - ITERATOR
*
* Generic iterator class for singly linked lists with embedded
*links
**********************************************************************/
class TESS_API CLIST_ITERATOR {
class TESS_API ITERATOR {
CLIST *list; // List being iterated
CLIST_LINK *prev; // prev element
CLIST_LINK *current; // current element
CLIST_LINK *next; // next element
CLIST_LINK *cycle_pt; // point we are cycling the list to.
LINK *prev; // prev element
LINK *current; // current element
LINK *next; // next element
LINK *cycle_pt; // point we are cycling the list to.
bool ex_current_was_last; // current extracted was end of list
bool ex_current_was_cycle_pt; // current extracted was cycle point
bool started_cycling; // Have we moved off the start?
/***********************************************************************
* CLIST_ITERATOR::extract_sublist()
* ITERATOR::extract_sublist()
*
* This is a private member, used only by CLIST::assign_to_sublist.
* Given another iterator for the same list, extract the links from THIS to
@ -83,9 +83,9 @@ public:
* pointer to the last element.
* (Can't inline this function because it contains a loop)
**********************************************************************/
CLIST_LINK *extract_sublist( // from this current
CLIST_ITERATOR *other_it) { // to other current
CLIST_ITERATOR temp_it = *this;
LINK *extract_sublist( // from this current
ITERATOR *other_it) { // to other current
ITERATOR temp_it = *this;
constexpr ERRCODE BAD_SUBLIST("Can't find sublist end point in original list");
#ifndef NDEBUG
@ -93,12 +93,12 @@ public:
constexpr ERRCODE DONT_EXTRACT_DELETED("Can't extract a sublist marked by deleted points");
if (list != other_it->list)
BAD_EXTRACTION_PTS.error("CLIST_ITERATOR.extract_sublist", ABORT);
BAD_EXTRACTION_PTS.error("ITERATOR.extract_sublist", ABORT);
if (list->empty())
EMPTY_LIST.error("CLIST_ITERATOR::extract_sublist", ABORT);
EMPTY_LIST.error("ITERATOR::extract_sublist", ABORT);
if (!current || !other_it->current)
DONT_EXTRACT_DELETED.error("CLIST_ITERATOR.extract_sublist", ABORT);
DONT_EXTRACT_DELETED.error("ITERATOR.extract_sublist", ABORT);
#endif
ex_current_was_last = other_it->ex_current_was_last = false;
@ -108,7 +108,7 @@ public:
temp_it.mark_cycle_pt();
do { // walk sublist
if (temp_it.cycled_list()) { // can't find end pt
BAD_SUBLIST.error("CLIST_ITERATOR.extract_sublist", ABORT);
BAD_SUBLIST.error("ITERATOR.extract_sublist", ABORT);
}
if (temp_it.at_last()) {
@ -146,22 +146,22 @@ public:
}
public:
CLIST_ITERATOR() { // constructor
ITERATOR() { // constructor
list = nullptr;
} // unassigned list
/***********************************************************************
* CLIST_ITERATOR::CLIST_ITERATOR
* ITERATOR::ITERATOR
*
* CONSTRUCTOR - set iterator to specified list;
**********************************************************************/
CLIST_ITERATOR( // constructor
ITERATOR( // constructor
CLIST *list_to_iterate) {
set_to_list(list_to_iterate);
}
/***********************************************************************
* CLIST_ITERATOR::set_to_list
* ITERATOR::set_to_list
*
* (Re-)initialise the iterator to point to the start of the list_to_iterate
* over.
@ -179,7 +179,7 @@ public:
}
/***********************************************************************
* CLIST_ITERATOR::add_after_then_move
* ITERATOR::add_after_then_move
*
* Add a new element to the list after the current element and move the
* iterator to the new element.
@ -188,11 +188,11 @@ public:
CLASSNAME *new_data) {
#ifndef NDEBUG
if (!new_data) {
BAD_PARAMETER.error("CLIST_ITERATOR::add_after_then_move", ABORT, "new_data is nullptr");
BAD_PARAMETER.error("ITERATOR::add_after_then_move", ABORT, "new_data is nullptr");
}
#endif
auto new_element = new CLIST_LINK;
auto new_element = new LINK;
new_element->data = new_data;
if (list->empty()) {
@ -222,7 +222,7 @@ public:
} // move to new
/***********************************************************************
* CLIST_ITERATOR::add_after_stay_put
* ITERATOR::add_after_stay_put
*
* Add a new element to the list after the current element but do not move
* the iterator to the new element.
@ -231,11 +231,11 @@ public:
CLASSNAME *new_data) {
#ifndef NDEBUG
if (!new_data) {
BAD_PARAMETER.error("CLIST_ITERATOR::add_after_stay_put", ABORT, "new_data is nullptr");
BAD_PARAMETER.error("ITERATOR::add_after_stay_put", ABORT, "new_data is nullptr");
}
#endif
auto new_element = new CLIST_LINK;
auto new_element = new LINK;
new_element->data = new_data;
if (list->empty()) {
@ -267,7 +267,7 @@ public:
} // stay at current
/***********************************************************************
* CLIST_ITERATOR::add_before_then_move
* ITERATOR::add_before_then_move
*
* Add a new element to the list before the current element and move the
* iterator to the new element.
@ -276,11 +276,11 @@ public:
CLASSNAME *new_data) {
#ifndef NDEBUG
if (!new_data) {
BAD_PARAMETER.error("CLIST_ITERATOR::add_before_then_move", ABORT, "new_data is nullptr");
BAD_PARAMETER.error("ITERATOR::add_before_then_move", ABORT, "new_data is nullptr");
}
#endif
auto new_element = new CLIST_LINK;
auto new_element = new LINK;
new_element->data = new_data;
if (list->empty()) {
@ -306,7 +306,7 @@ public:
} // move to new
/***********************************************************************
* CLIST_ITERATOR::add_before_stay_put
* ITERATOR::add_before_stay_put
*
* Add a new element to the list before the current element but don't move the
* iterator to the new element.
@ -315,11 +315,11 @@ public:
CLASSNAME *new_data) {
#ifndef NDEBUG
if (!new_data) {
BAD_PARAMETER.error("CLIST_ITERATOR::add_before_stay_put", ABORT, "new_data is nullptr");
BAD_PARAMETER.error("ITERATOR::add_before_stay_put", ABORT, "new_data is nullptr");
}
#endif
auto new_element = new CLIST_LINK;
auto new_element = new LINK;
new_element->data = new_data;
if (list->empty()) {
@ -346,7 +346,7 @@ public:
} // stay at current
/***********************************************************************
* CLIST_ITERATOR::add_list_after
* ITERATOR::add_list_after
*
* Insert another list to this list after the current element but don't move
*the
@ -384,7 +384,7 @@ public:
} // stay at current
/***********************************************************************
* CLIST_ITERATOR::add_list_before
* ITERATOR::add_list_before
*
* Insert another list to this list before the current element. Move the
* iterator to the start of the inserted elements
@ -422,14 +422,14 @@ public:
CLASSNAME *data() { // get current data
#ifndef NDEBUG
if (!list) {
NO_LIST.error("CLIST_ITERATOR::data", ABORT);
NO_LIST.error("ITERATOR::data", ABORT);
}
#endif
return current->data;
}
/***********************************************************************
* CLIST_ITERATOR::data_relative
* ITERATOR::data_relative
*
* Return the data pointer to the element "offset" elements from current.
* "offset" must not be less than -1.
@ -437,15 +437,15 @@ public:
**********************************************************************/
CLASSNAME *data_relative( // get data + or - ...
int8_t offset) { // offset from current
CLIST_LINK *ptr;
LINK *ptr;
#ifndef NDEBUG
if (!list)
NO_LIST.error("CLIST_ITERATOR::data_relative", ABORT);
NO_LIST.error("ITERATOR::data_relative", ABORT);
if (list->empty())
EMPTY_LIST.error("CLIST_ITERATOR::data_relative", ABORT);
EMPTY_LIST.error("ITERATOR::data_relative", ABORT);
if (offset < -1)
BAD_PARAMETER.error("CLIST_ITERATOR::data_relative", ABORT, "offset < -l");
BAD_PARAMETER.error("ITERATOR::data_relative", ABORT, "offset < -l");
#endif
if (offset == -1) {
@ -460,7 +460,7 @@ public:
}
/***********************************************************************
* CLIST_ITERATOR::forward
* ITERATOR::forward
*
* Move the iterator to the next element of the list.
* REMEMBER: ALL LISTS ARE CIRCULAR.
@ -488,7 +488,7 @@ public:
}
/***********************************************************************
* CLIST_ITERATOR::extract
* ITERATOR::extract
*
* Do extraction by removing current from the list, deleting the cons cell
* and returning the data to the caller, but NOT updating the iterator. (So
@ -499,7 +499,7 @@ public:
#ifndef NDEBUG
if (!current) { // list empty or
// element extracted
NULL_CURRENT.error("CLIST_ITERATOR::extract", ABORT);
NULL_CURRENT.error("ITERATOR::extract", ABORT);
}
#endif
@ -525,7 +525,7 @@ public:
} // remove from list
/***********************************************************************
* CLIST_ITERATOR::move_to_first()
* ITERATOR::move_to_first()
*
* Move current so that it is set to the start of the list.
* Return data just in case anyone wants it.
@ -538,7 +538,7 @@ public:
} // go to start of list
/***********************************************************************
* CLIST_ITERATOR::move_to_last()
* ITERATOR::move_to_last()
*
* Move current so that it is set to the end of the list.
* Return data just in case anyone wants it.
@ -557,7 +557,7 @@ public:
}
/***********************************************************************
* CLIST_ITERATOR::mark_cycle_pt()
* ITERATOR::mark_cycle_pt()
*
* Remember the current location so that we can tell whether we've returned
* to this point later.
@ -569,7 +569,7 @@ public:
void mark_cycle_pt() {
#ifndef NDEBUG
if (!list) {
NO_LIST.error("CLIST_ITERATOR::mark_cycle_pt", ABORT);
NO_LIST.error("ITERATOR::mark_cycle_pt", ABORT);
}
#endif
@ -590,7 +590,7 @@ public:
}
/***********************************************************************
* CLIST_ITERATOR::at_first()
* ITERATOR::at_first()
*
* Are we at the start of the list?
*
@ -603,7 +603,7 @@ public:
} // Current is first?
/***********************************************************************
* CLIST_ITERATOR::at_last()
* ITERATOR::at_last()
*
* Are we at the end of the list?
*
@ -616,7 +616,7 @@ public:
} // Current is last?
/***********************************************************************
* CLIST_ITERATOR::cycled_list()
* ITERATOR::cycled_list()
*
* Have we returned to the cycle_pt since it was set?
*
@ -626,7 +626,7 @@ public:
}
/***********************************************************************
* CLIST_ITERATOR::add_to_end
* ITERATOR::add_to_end
*
* Add a new element to the end of the list without moving the iterator.
* This is provided because a single linked list cannot move to the last as
@ -638,10 +638,10 @@ public:
CLASSNAME *new_data) {
#ifndef NDEBUG
if (!list) {
NO_LIST.error("CLIST_ITERATOR::add_to_end", ABORT);
NO_LIST.error("ITERATOR::add_to_end", ABORT);
}
if (!new_data) {
BAD_PARAMETER.error("CLIST_ITERATOR::add_to_end", ABORT, "new_data is nullptr");
BAD_PARAMETER.error("ITERATOR::add_to_end", ABORT, "new_data is nullptr");
}
#endif
@ -652,7 +652,7 @@ public:
this->add_before_stay_put(new_data);
list->last = prev;
} else { // Iteratr is elsewhere
auto new_element = new CLIST_LINK;
auto new_element = new LINK;
new_element->data = new_data;
new_element->next = list->last->next;
@ -663,7 +663,7 @@ public:
}
/***********************************************************************
* CLIST_ITERATOR::exchange()
* ITERATOR::exchange()
*
* Given another iterator, whose current element is a different element on
* the same list list OR an element of another list, exchange the two current
@ -672,7 +672,7 @@ public:
* (This function hasn't been in-lined because its a bit big!)
**********************************************************************/
void exchange( // positions of 2 links
CLIST_ITERATOR *other_it) { // other iterator
ITERATOR *other_it) { // other iterator
constexpr ERRCODE DONT_EXCHANGE_DELETED("Can't exchange deleted elements of lists");
/* Do nothing if either list is empty or if both iterators reference the same
@ -685,7 +685,7 @@ public:
/* Error if either current element is deleted */
if (!current || !other_it->current) {
DONT_EXCHANGE_DELETED.error("CLIST_ITERATOR.exchange", ABORT);
DONT_EXCHANGE_DELETED.error("ITERATOR.exchange", ABORT);
}
/* Now handle the 4 cases: doubleton list; non-doubleton adjacent elements
@ -747,7 +747,7 @@ public:
}
/***********************************************************************
* CLIST_ITERATOR::length()
* ITERATOR::length()
*
* Return the length of the list
*
@ -757,7 +757,7 @@ public:
}
/***********************************************************************
* CLIST_ITERATOR::sort()
* ITERATOR::sort()
*
* Sort the elements of the list, then reposition at the start.
*
@ -771,14 +771,14 @@ public:
};
private:
CLIST_LINK *last = nullptr; // End of list
LINK *last = nullptr; // End of list
//(Points to head)
CLIST_LINK *First() { // return first
LINK *First() { // return first
return last != nullptr ? last->next : nullptr;
}
const CLIST_LINK *First() const { // return first
const LINK *First() const { // return first
return last != nullptr ? last->next : nullptr;
}
@ -862,8 +862,8 @@ public:
* end point is always the end_it position.
**********************************************************************/
void assign_to_sublist( // to this list
CLIST_ITERATOR *start_it, // from list start
CLIST_ITERATOR *end_it) { // from list end
ITERATOR *start_it, // from list start
ITERATOR *end_it) { // from list end
constexpr ERRCODE LIST_NOT_EMPTY("Destination list must be empty before extracting a sublist");
if (!empty()) {
@ -899,7 +899,7 @@ public:
std::vector<CLASSNAME *> base;
base.reserve(count);
CLIST_ITERATOR it(this);
ITERATOR it(this);
// Extract all elements, putting the pointers in the array.
for (it.mark_cycle_pt(); !it.cycled_list(); it.forward()) {
@ -926,7 +926,7 @@ public:
bool add_sorted(int comparator(const CLASSNAME *, const CLASSNAME *), bool unique, CLASSNAME *new_data) {
// Check for adding at the end.
if (last == nullptr || comparator(last->data, new_data) < 0) {
auto *new_element = new CLIST_LINK;
auto *new_element = new LINK;
new_element->data = new_data;
if (last == nullptr) {
new_element->next = new_element;
@ -938,7 +938,7 @@ public:
return true;
} else if (!unique || last->data != new_data) {
// Need to use an iterator.
CLIST_ITERATOR it(this);
ITERATOR it(this);
for (it.mark_cycle_pt(); !it.cycled_list(); it.forward()) {
auto data = it.data();
if (data == new_data && unique) {
@ -966,8 +966,8 @@ public:
void set_subtract(int comparator(const CLASSNAME *, const CLASSNAME *), bool unique, CLIST *minuend,
CLIST *subtrahend) {
shallow_clear();
CLIST_ITERATOR m_it(minuend);
CLIST_ITERATOR s_it(subtrahend);
ITERATOR m_it(minuend);
ITERATOR s_it(subtrahend);
// Since both lists are sorted, finding the subtras that are not
// minus is a case of a parallel iteration.
for (m_it.mark_cycle_pt(); !m_it.cycled_list(); m_it.forward()) {
@ -991,9 +991,7 @@ public:
class CLASSNAME##_CLIST : public CLIST<CLASSNAME> { \
using CLIST<CLASSNAME>::CLIST; \
}; \
struct CLASSNAME##_C_IT : X_ITER<CLIST<CLASSNAME>::CLIST_ITERATOR, CLASSNAME> { \
using X_ITER<CLIST<CLASSNAME>::CLIST_ITERATOR, CLASSNAME>::X_ITER; \
};
using CLASSNAME##_C_IT = CLIST<CLASSNAME>::ITERATOR;
} // namespace tesseract