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Diffstat (limited to 'src/lib/eina_graph_dfs.c')
-rw-r--r--src/lib/eina_graph_dfs.c41
1 files changed, 19 insertions, 22 deletions
diff --git a/src/lib/eina_graph_dfs.c b/src/lib/eina_graph_dfs.c
index 7951b3c..1b9a61a 100644
--- a/src/lib/eina_graph_dfs.c
+++ b/src/lib/eina_graph_dfs.c
@@ -38,6 +38,7 @@ _eina_graph_dfs_swalk(_Eina_Graph *_g, _Eina_Graph_DFS *_dfs, unsigned int v)
{
Eina_List *stack = NULL;
_Eina_Graph_Adjacents *adjs;
+ _Eina_Graph_DFS_Data *vd;
unsigned int p, w, n, i;
p = v;
@@ -48,9 +49,10 @@ _eina_graph_dfs_swalk(_Eina_Graph *_g, _Eina_Graph_DFS *_dfs, unsigned int v)
w = CAST_D(eina_list_data_get(stack));
stack = eina_list_remove(stack, CAST_V(w));
- if(_dfs->marked[w]) continue;
- _dfs->marked[w] = EINA_TRUE;
- _dfs->edge_to[w] = p;
+ vd = &_dfs->data[w];
+ if(vd->m) continue;
+ vd->m = EINA_TRUE;
+ vd->e = p;
p = w;
adjs = &_g->adjs[w];
@@ -58,7 +60,7 @@ _eina_graph_dfs_swalk(_Eina_Graph *_g, _Eina_Graph_DFS *_dfs, unsigned int v)
for (i = 0; i < n; i++)
{
w = adjs->data[i];
- if (!_dfs->marked[w])
+ if (!_dfs->data[w].m)
{
stack = eina_list_prepend(stack, CAST_V(w));
}
@@ -70,19 +72,21 @@ static void
_eina_graph_dfs_rwalk(_Eina_Graph *_g, _Eina_Graph_DFS *_dfs, unsigned int v)
{
_Eina_Graph_Adjacents *adjs;
+ _Eina_Graph_DFS_Data *vd;
unsigned int i, n, w;
- _dfs->marked[v] = EINA_TRUE;
+ _dfs->data[v].m = EINA_TRUE;
adjs = &_g->adjs[v];
n = adjs->count;
for (i = 0; i < n; i++)
{
w = adjs->data[i];
- if (!_dfs->marked[w])
+ vd = &_dfs->data[w];
+ if (!vd->m)
{
_eina_graph_dfs_rwalk(_g, _dfs, w);
- _dfs->edge_to[w] = v;
+ vd->e = v;
}
}
}
@@ -97,13 +101,9 @@ eina_graph_dfs_new(Eina_Graph *g, unsigned int s, Eina_Bool r)
if (!_dfs)
goto error_dfs;
- _dfs->marked = calloc(_g->vertices, sizeof(Eina_Bool));
- if (!_dfs->marked)
- goto error_marked;
-
- _dfs->edge_to = calloc(_g->vertices, sizeof(unsigned int));
- if (!_dfs->edge_to)
- goto error_edge_to;
+ _dfs->data = calloc(_g->vertices, sizeof(_Eina_Graph_DFS_Data));
+ if (!_dfs->data)
+ goto error_data;
_dfs->s = s;
_dfs->vertices = _g->vertices;
@@ -115,9 +115,7 @@ eina_graph_dfs_new(Eina_Graph *g, unsigned int s, Eina_Bool r)
return (Eina_Graph_DFS *) _dfs;
-error_edge_to:
- free(_dfs->marked);
-error_marked:
+error_data:
free(_dfs);
error_dfs:
ERR("calloc failed : %s", strerror(errno));
@@ -129,8 +127,7 @@ eina_graph_dfs_free(Eina_Graph_DFS *dfs)
{
_Eina_Graph_DFS *_dfs = (_Eina_Graph_DFS *) dfs;
- free(_dfs->marked);
- free(_dfs->edge_to);
+ free(_dfs->data);
free(_dfs);
}
@@ -153,7 +150,7 @@ eina_graph_dfs_has_path_to(Eina_Graph_DFS *dfs, unsigned int v)
return EINA_FALSE;
}
- return _dfs->marked[v];
+ return _dfs->data[v].m;
}
EAPI Eina_List *
@@ -169,13 +166,13 @@ eina_graph_dfs_path_to(Eina_Graph_DFS *dfs, unsigned int v)
return NULL;
}
- if (!_dfs->marked[v])
+ if (!_dfs->data[v].m)
return NULL;
while (w != _dfs->s)
{
path = eina_list_prepend(path, CAST_V(w));
- w = _dfs->edge_to[w];
+ w = _dfs->data[w].e;
}
path = eina_list_prepend(path, CAST_V(_dfs->s));