private void SortTopologically(ICollection <int> result, out bool loop)
{
var graph = ListPool <List <int> > .Rent();
for (var i = 0; i < _dependencies.Count; i++)
{
graph.Add(ListPool <int> .Rent());
}
for (var i = 0; i < _dependencies.Count; i++)
{
for (var j = 0; j < _dependencies.Count; j++)
{
var dependency1 = _dependencies[i];
var dependency2 = _dependencies[j];
var type1 = dependency1.GetTypeOrObjectType();
var type2 = dependency2.GetTypeOrObjectType();
if (!Dependency.DependsOn(type2, type1))
{
continue;
}
graph[i].Add(j);
}
}
TopologicalSorting.Sort(graph, _dependencies.Count, result, out loop);
foreach (var graphList in graph)
{
ListPool <int> .Return(graphList);
}
ListPool <List <int> > .Return(graph);
}
public bool TrySortTopologically(bool dryRun = false)
{
var graph = ListPool <List <int> > .Rent();
for (var i = 0; i < _dependencies.Count; i++)
{
graph.Add(new List <int>());
}
for (var i = 0; i < _dependencies.Count; i++)
{
for (var j = 0; j < _dependencies.Count; j++)
{
var dependency1 = _dependencies[i];
var dependency2 = _dependencies[j];
var type1 = dependency1.GetTypeOrObjectType();
var type2 = dependency2.GetTypeOrObjectType();
if (!Dependency.DependsOn(type2, type1))
{
continue;
}
graph[i].Add(j);
}
}
var result = ListPool <int> .Rent();
SortTopologically(result, out var loop);
if (loop)
{
ListPool <int> .Return(result);
return(false);
}
var sortedDependencies = ListPool <Dependency> .Rent();
for (var resultIndex = result.Count - 1; resultIndex >= 0; resultIndex--)
{
var index = result[resultIndex];
sortedDependencies.Add(_dependencies[index]);
}
if (!dryRun)
{
_dependencies.Clear();
foreach (var dependency in sortedDependencies)
{
_dependencies.Add(dependency);
}
}
ListPool <Dependency> .Return(sortedDependencies);
ListPool <int> .Return(result);
return(true);
}