anne/lyx_mirror
1
0
Fork 0
mirror of https://git.lyx.org/repos/lyx.git synced 2024-11-30 05:12:40 +00:00
Code Issues Actions Packages Projects Releases Wiki Activity

Another minor change, but this should almost get us to the point that we

Browse Source 
could return all paths, not just one.


git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@31915 a592a061-630c-0410-9148-cb99ea01b6c8
This commit is contained in:
Richard Heck 2009-11-09 03:43:48 +00:00
parent dfbbb87e0b
commit ac6a58071e
1 changed files with 12 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

18
src/Graph.cpp
View File

@ -44,6 +44,11 @@ vector<int> const
if (!bfs_init(target, clear_visited))
return result;
// Here's the logic, which is shared by the other routines.
// Q_ holds a list of nodes we have been able to reach (in this
// case, reach backwards). It is initailized to the current node
// by bfs_init, and then we recurse, adding the nodes we can reach
// from the current node as we go.
while (!Q_.empty()) {
int const current = Q_.front();
Q_.pop();
@ -142,8 +147,8 @@ Graph::EdgePath const Graph::getPath(int from, int to)
if (to < 0 || !bfs_init(from))
return path;
vector<int> prev_edge(formats.size());
vector<int> prev_vertex(formats.size());
// pair<vertex, edge>
vector<pair<int, int> > prev(vertices_.size());
bool found = false;
while (!Q_.empty()) {
@ -164,8 +169,9 @@ Graph::EdgePath const Graph::getPath(int from, int to)
if (!visited_[cv]) {
visited_[cv] = true;
Q_.push(cv);
prev_edge[cv] = cit->edge;
prev_vertex[cv] = current;
// FIXME This will not do for finding multiple paths.
// Perhaps we need a vector, or a set.
prev[cv] = pair<int, int>(current, cit->edge);
}
}
}
@ -173,8 +179,8 @@ Graph::EdgePath const Graph::getPath(int from, int to)
return path;
while (to != from) {
path.push_back(prev_edge[to]);
to = prev_vertex[to];
path.push_back(prev[to].second);
to = prev[to].first;
}
reverse(path.begin(), path.end());
return path;