/// <inheritdoc />
protected override void SetItem(int index, StackDependency <TContents> item)
{
AssertDependencyValidity(item);
RemoveAt(index);
Insert(index, item);
}
/// <summary>
/// Creates a new instance of the <see cref="Enumerator"/> structure.
/// </summary>
/// <param name="collection">The collection to enumerate.</param>
public Enumerator(StackDependencyCollection <TContents> collection)
: this()
{
_collection = collection;
_index = -1;
_current = null;
}
/// <inheritdoc />
public bool MoveNext()
{
_index++;
if (_index < _collection.Count)
{
_current = _collection[_index];
return(true);
}
_current = null;
return(false);
}
public void AddStackDependencyShouldSetDependant()
{
var dfg = new DataFlowGraph <int>(IntArchitecture.Instance);
var n0 = dfg.Nodes.Add(0, 0);
var n1 = dfg.Nodes.Add(1, 1);
var dependency = new StackDependency <int>();
n1.StackDependencies.Add(dependency);
dependency.Add(n0);
Assert.Same(n1, dependency.Dependent);
}
public void RemoveStackDependencyShouldUnsetDependant()
{
var dfg = new DataFlowGraph <int>(IntArchitecture.Instance);
var n0 = dfg.Nodes.Add(0, 0);
var n1 = dfg.Nodes.Add(1, 1);
var symbolicValue = new StackDependency <int>();
n1.StackDependencies.Add(symbolicValue);
symbolicValue.Add(n0);
n1.StackDependencies.Remove(symbolicValue);
Assert.Null(symbolicValue.Dependent);
}
private void AssertDependencyValidity(StackDependency <TContents> item)
{
if (item is null)
{
throw new ArgumentNullException(nameof(item));
}
if (item.Dependent is not null)
{
throw new ArgumentException("Stack dependency was already added to another node.");
}
if (item.Any(n => n.Node.ParentGraph != _owner.ParentGraph))
{
throw new ArgumentException("Dependency contains data sources from another graph.");
}
}
public void AddStackDependencyWithMultipleSourcesShouldSetDegree()
{
var graph = new DataFlowGraph <int>(IntArchitecture.Instance);
var n1 = graph.Nodes.Add(1, 1);
var n2 = graph.Nodes.Add(2, 2);
var n3 = graph.Nodes.Add(3, 3);
Assert.Equal(0, n1.OutDegree);
var dependency = new StackDependency <int>();
n1.StackDependencies.Add(dependency);
dependency.Add(n2);
dependency.Add(n3);
Assert.Equal(2, n1.OutDegree);
}
public void AddStackDependencyShouldAddToDependants()
{
var dfg = new DataFlowGraph <int>(IntArchitecture.Instance);
var n0 = dfg.Nodes.Add(0, 0);
var n1 = dfg.Nodes.Add(1, 1);
var n2 = dfg.Nodes.Add(2, 2);
var dependency1 = new StackDependency <int>();
n1.StackDependencies.Add(dependency1);
dependency1.Add(n0);
var dependency2 = new StackDependency <int>();
n2.StackDependencies.Add(dependency2);
dependency2.Add(n0);
Assert.Equal(new HashSet <DataFlowNode <int> >
{
n1, n2
}, new HashSet <DataFlowNode <int> >(n0.GetDependants()));
}
/// <inheritdoc />
protected override void InsertItem(int index, StackDependency <TContents> item)
{
AssertDependencyValidity(item);
base.InsertItem(index, item);
item.Dependent = _owner;
}
/// <inheritdoc />
public void Reset()
{
_index = -1;
_current = null;
}