lyx_mirror/src/TexRow.cpp

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/**
* \file TexRow.cpp
* This file is part of LyX, the document processor.
* Licence details can be found in the file COPYING.
*
* \author Matthias Ettrich
* \author Lars Gullik Bjønnes
* \author John Levon
*
* Full author contact details are available in file CREDITS.
*/
#include <config.h>
#include "TexRow.h"
#include "support/debug.h"
#include <algorithm>
namespace lyx {
void TexRow::reset()
{
rowlist.clear();
lastid = -1;
lastpos = -1;
}
void TexRow::start(int id, int pos)
{
if (started)
return;
lastid = id;
lastpos = pos;
started = true;
}
void TexRow::newline()
{
int const id = lastid;
RowList::value_type tmp(id, lastpos);
rowlist.push_back(tmp);
started = false;
}
void TexRow::newlines(int num_lines)
{
for (int i = 0; i < num_lines; ++i) {
newline();
}
}
bool TexRow::getIdFromRow(int row, int & id, int & pos) const
{
if (row <= 0 || row > int(rowlist.size())) {
id = -1;
pos = 0;
return false;
}
id = rowlist[row - 1].id();
pos = rowlist[row - 1].pos();
return true;
}
int TexRow::getRowFromIdPos(int id, int pos) const
{
bool foundid = false;
// this loop finds the last *nonempty* row with the same id
// and position <= pos
RowList::const_iterator bestrow = rowlist.begin();
RowList::const_iterator it = rowlist.begin();
RowList::const_iterator const end = rowlist.end();
for (; it != end; ++it) {
if (it->id() == id && it->pos() <= pos) {
foundid = true;
if (bestrow->id() != id || it->pos() > bestrow->pos())
bestrow = it;
} else if (foundid)
break;
}
if (!foundid)
return rowlist.size();
return distance(rowlist.begin(), bestrow) + 1;
}
} // namespace lyx