/// <summary>
/// Expand (recursively) set of active targets to include targets which reference any
/// of the active targets with BeforeTarget or AfterTarget.
/// </summary>
/// <param name="projectInstance">An MSBuild Project instance to use for context.</param>
/// <param name="activeTargets">
/// Set of active targets. Will be modified in place to add targets that reference this
/// graph with BeforeTarget or AfterTarget.
/// </param>
public static void AddBeforeAndAfterTargets(this ProjectInstance projectInstance, Dictionary <string, ProjectTargetInstance> activeTargets)
{
var newTargetsToConsider = true;
while (newTargetsToConsider)
{
newTargetsToConsider = false;
foreach (KeyValuePair <string, ProjectTargetInstance> pair in projectInstance.Targets)
{
string targetName = pair.Key;
ProjectTargetInstance targetInstance = pair.Value;
// If the target is not already in our list of active targets ...
if (!activeTargets.ContainsKey(targetName))
{
IEnumerable <string> hookedTargets = projectInstance.EvaluateValue(targetInstance.AfterTargets)
.Concat(projectInstance.EvaluateValue(targetInstance.BeforeTargets));
foreach (string hookedTarget in hookedTargets)
{
// ... and it hooks a running target with BeforeTargets/AfterTargets ...
if (activeTargets.ContainsKey(hookedTarget))
{
// ... then add it to the list of running targets ...
projectInstance.AddToActiveTargets(targetName, activeTargets);
// ... and make a note to run again, since activeTargets has changed.
newTargetsToConsider = true;
}
}
}
}
}
}
/// <summary>
/// Given a target name, gets set of targets that are to be executed,
/// for the provided target name and all targets that those depend on.
/// </summary>
/// <param name="projectInstance">An MSBuild Project instance to use for context.</param>
/// <param name="evaluatedTargetName">Evaluated target name that we should analyze.</param>
/// <param name="activeTargets">Collection into which targets should be added.</param>
public static void AddToActiveTargets(
this ProjectInstance projectInstance,
string evaluatedTargetName,
Dictionary <string, ProjectTargetInstance> activeTargets)
{
// Avoid circular dependencies
if (activeTargets.ContainsKey(evaluatedTargetName))
{
return;
}
// The Project or its includes might not actually include the target name.
if (projectInstance.Targets.TryGetValue(evaluatedTargetName, out ProjectTargetInstance target))
{
activeTargets.Add(evaluatedTargetName, target);
// Parse all parent targets that current target depends on.
var dependsOnTargets = projectInstance.EvaluateValue(target.DependsOnTargets);
foreach (string dependsOnTarget in dependsOnTargets)
{
AddToActiveTargets(projectInstance, dependsOnTarget, activeTargets);
}
}
}
