/// <summary>
/// Creates a new dependency edge between two nodes.
/// </summary>
/// <param name="origin">The dependent node.</param>
/// <param name="target">The dependency node.</param>
/// <param name="type">The type of dependency.</param>
/// <param name="metadata">The metadata associated to the edge.</param>
public DataFlowEdge(DataFlowNode <TContents> origin, DataFlowNode <TContents> target, DataDependencyType type, object metadata)
{
Origin = origin;
Target = target;
Type = type;
Metadata = metadata;
}
public void DisconnectNodeShouldRemoveEdge(DataDependencyType edgeType, bool removeSourceNode)
{
var variable = new DummyVariable("var");
var graph = new DataFlowGraph <int>(IntArchitecture.Instance);
var n1 = new DataFlowNode <int>(0, 0);
n1.StackDependencies.Add(new DataDependency <int>());
n1.VariableDependencies.Add(variable, new DataDependency <int>());
var n2 = new DataFlowNode <int>(1, 1);
graph.Nodes.AddRange(new[]
{
n1,
n2
});
switch (edgeType)
{
case DataDependencyType.Stack:
n1.StackDependencies[0].Add(new DataSource <int>(n2));
break;
case DataDependencyType.Variable:
n1.VariableDependencies[variable].Add(new DataSource <int>(n2));
break;
default:
throw new ArgumentOutOfRangeException(nameof(edgeType), edgeType, null);
}
if (removeSourceNode)
{
n1.Disconnect();
}
else
{
n2.Disconnect();
}
Assert.Empty(n1.StackDependencies[0]);
Assert.Empty(n1.VariableDependencies[variable]);
Assert.Empty(n2.GetDependants());
}
