public object ExecuteByName(string name)
{
TargetDefinition definition;
if (!_targets.Value.TryGetValue(name, out definition))
{
definition = new TargetDefinition();
_targets.Value[name] = definition;
}
return ExecuteTarget(name, definition);
}
private object ExecuteTarget(string name, TargetDefinition definition)
{
foreach (var dependsOn in definition.DependsOn)
{
ExecuteByName(dependsOn);
}
if (definition.HasExecuted == false)
{
definition.HasExecuted = true;
Console.WriteLine($"Executing {name}");
definition.ResultObject = definition.ExecuteMethod(_services);
}
return definition.ResultObject;
}
public virtual void AddTargets(IDictionary<string, TargetDefinition> targets)
{
foreach (var method in GetType().GetTypeInfo().DeclaredMethods)
{
var targetAttribute = method.GetCustomAttributes<TargetAttribute>().SingleOrDefault();
if (targetAttribute == null)
{
continue;
}
var name = targetAttribute.Name;
if (string.IsNullOrEmpty(name))
{
name = method.Name;
}
TargetDefinition definition;
if (!targets.TryGetValue(name, out definition))
{
definition = new TargetDefinition();
targets[name] = definition;
}
definition.ExecuteMethod = services =>
{
var targetManager = services.GetRequiredService<ITargetManager>();
var parameters = method.GetParameters();
var arguments = new object[parameters.Length];
for (var index = 0; index < parameters.Length; index++)
{
arguments[index] = services.GetService(parameters[index].ParameterType);
if (arguments[index] == null)
{
arguments[index] = targetManager.ExecuteByReturnType(parameters[index].ParameterType);
}
}
return method.Invoke(this, arguments);
};
definition.ResultType = method.ReturnType;
if (!string.IsNullOrWhiteSpace(targetAttribute.DependsOn))
{
foreach (var dependsOn in targetAttribute.DependsOn.Split(
new[] { ',', ' ' },
StringSplitOptions.RemoveEmptyEntries))
{
definition.DependsOn.Add(dependsOn);
}
}
if (!string.IsNullOrWhiteSpace(targetAttribute.BeforeTarget))
{
foreach (var beforeTarget in targetAttribute.BeforeTarget.Split(
new[] { ',', ' ' },
StringSplitOptions.RemoveEmptyEntries))
{
TargetDefinition beforeDefinition;
if (!targets.TryGetValue(beforeTarget, out beforeDefinition))
{
beforeDefinition = new TargetDefinition();
targets[beforeTarget] = beforeDefinition;
}
beforeDefinition.DependsOn.Add(name);
}
}
}
}
