private void BuildInjectionPlan(INode n, IDictionary <INode, InjectionPlan> memo)
{
if (memo.ContainsKey(n))
{
InjectionPlan p = null;
memo.TryGetValue(n, out p);
if (BUILDING == p)
{
StringBuilder loopyList = new StringBuilder("[");
foreach (INode node in memo.Keys)
{
InjectionPlan p1 = null;
memo.TryGetValue(node, out p1);
if (p1 == BUILDING)
{
loopyList.Append(" " + node.GetFullName());
}
}
loopyList.Append(" ]");
throw new ClassHierarchyException("Detected loopy constructor involving "
+ loopyList.ToString());
}
else
{
return;
}
}
memo.Add(n, BUILDING);
InjectionPlan ip = null;
if (n is INamedParameterNode)
{
INamedParameterNode np = (INamedParameterNode)n;
object boundInstance = ParseBoundNamedParameter(np);
object defaultInstance = this.classHierarchy.ParseDefaultValue(np);
object instance = boundInstance != null ? boundInstance : defaultInstance;
if (instance is INode)
{
BuildInjectionPlan((INode)instance, memo);
InjectionPlan sp = null;
memo.TryGetValue((INode)instance, out sp);
if (sp != null)
{
ip = new Subplan(n, 0, new InjectionPlan[] { sp });
}
}
else if (instance is ISet <object> )
{
ISet <object> entries = (ISet <object>)instance;
ISet <InjectionPlan> plans = new MonotonicSet <InjectionPlan>();
foreach (object entry in entries)
{
if (entry is IClassNode)
{
BuildInjectionPlan((IClassNode)entry, memo);
InjectionPlan p2 = null;
memo.TryGetValue((INode)entry, out p2);
if (p2 != null)
{
plans.Add(p2);
}
}
else
{
plans.Add(new CsInstance(n, entry));
}
}
ip = new SetInjectionPlan(n, plans);
}
else
{
ip = new CsInstance(np, instance);
}
}
else if (n is IClassNode)
{
IClassNode cn = (IClassNode)n;
// Any (or all) of the next four values might be null; that's fine.
object cached = GetCachedInstance(cn);
IClassNode boundImpl = this.configuration.GetBoundImplementation(cn);
IClassNode defaultImpl = ParseDefaultImplementation(cn);
IClassNode ec = this.configuration.GetBoundConstructor(cn);
ip = BuildClassNodeInjectionPlan(cn, cached, ec, boundImpl, defaultImpl, memo);
}
else if (n is IPackageNode)
{
throw new ArgumentException(
"Request to instantiate Java package as object");
}
else
{
throw new IllegalStateException(
"Type hierarchy contained unknown node type!:" + n);
}
memo[n] = ip;
}
public object InjectFromPlan(InjectionPlan plan)
{
if (!plan.IsFeasible())
{
throw new InjectionException("Cannot inject " + plan.GetNode().GetFullName() + ": "
+ plan.ToCantInjectString());
}
if (plan.IsAmbiguous())
{
throw new InjectionException("Cannot inject " + plan.GetNode().GetFullName() + " "
+ plan.ToCantInjectString());
}
if (plan is InjectionFuturePlan)
{
InjectionFuturePlan fut = (InjectionFuturePlan)plan;
string key = fut.GetNode().GetFullName();
try
{
//we will see if we need to introduce T to replace object
InjectionFuture ret = new InjectionFuture(this, classHierarchy.ClassForName(fut.GetNode().GetFullName()));
pendingFutures.Add(ret);
return(ret);
}
catch (TypeLoadException e)
{
throw new InjectionException("Could not get class for " + key);
}
}
else if (plan.GetNode() is IClassNode && null != GetCachedInstance((IClassNode)plan.GetNode()))
{
return(GetCachedInstance((IClassNode)plan.GetNode()));
}
else if (plan is CsInstance)
{
// TODO: Must be named parameter node. Check.
// throw new IllegalStateException("Instance from plan not in Injector's set of instances?!?");
return(((CsInstance)plan).instance);
}
else if (plan is Constructor)
{
Constructor constructor = (Constructor)plan;
object[] args = new object[constructor.GetArgs().Length];
InjectionPlan[] argPlans = constructor.GetArgs();
for (int i = 0; i < argPlans.Length; i++)
{
args[i] = InjectFromPlan(argPlans[i]);
}
try
{
concurrentModificationGuard = true;
object ret;
try
{
IConstructorDef def = (IConstructorDef)constructor.GetConstructorDef();
ConstructorInfo c = GetConstructor(def);
if (aspect != null)
{
ret = aspect.Inject(def, c, args);
}
else
{
ret = c.Invoke(args);
}
}
catch (ArgumentException e)
{
StringBuilder sb = new StringBuilder("Internal Tang error? Could not call constructor " + constructor.GetConstructorDef() + " with arguments [");
foreach (Object o in args)
{
sb.Append("\n\t" + o);
}
sb.Append("]");
throw new IllegalStateException(sb.ToString(), e);
}
if (ret is IExternalConstructor)
{
ret = ((IExternalConstructor)ret).NewInstance();
}
instances.Add(constructor.GetNode(), ret);
return(ret);
}
catch (Exception e)
{
throw new InjectionException("Could not invoke constructor: " + plan, e); //check what exception might be got and refine it
} finally
{
concurrentModificationGuard = false;
}
}
else if (plan is Subplan)
{
Subplan ambiguous = (Subplan)plan;
return(InjectFromPlan(ambiguous.GetDelegatedPlan()));
}
else if (plan is SetInjectionPlan)
{
SetInjectionPlan setPlan = (SetInjectionPlan)plan;
ISet <object> ret = new MonotonicSet <object>();
foreach (InjectionPlan subplan in setPlan.GetEntryPlans())
{
ret.Add(InjectFromPlan(subplan));
}
return(ret);
}
else
{
throw new IllegalStateException("Unknown plan type: " + plan);
}
}
private void BuildInjectionPlan(INode n, IDictionary<INode, InjectionPlan> memo)
{
if (memo.ContainsKey(n))
{
InjectionPlan p = null;
memo.TryGetValue(n, out p);
if (BUILDING == p)
{
StringBuilder loopyList = new StringBuilder("[");
foreach (INode node in memo.Keys)
{
InjectionPlan p1 = null;
memo.TryGetValue(node, out p1);
if(p1 == BUILDING)
{
loopyList.Append(" " + node.GetFullName());
}
}
loopyList.Append(" ]");
throw new ClassHierarchyException("Detected loopy constructor involving "
+ loopyList.ToString());
}
else
{
return;
}
}
memo.Add(n, BUILDING);
InjectionPlan ip = null;
if (n is INamedParameterNode)
{
INamedParameterNode np = (INamedParameterNode)n;
object boundInstance = ParseBoundNamedParameter(np);
object defaultInstance = this.classHierarchy.ParseDefaultValue(np);
object instance = boundInstance != null ? boundInstance : defaultInstance;
if (instance is INode)
{
BuildInjectionPlan((INode)instance, memo);
InjectionPlan sp = null;
memo.TryGetValue((INode)instance, out sp);
if (sp != null)
{
ip = new Subplan(n, 0, new InjectionPlan[] {sp});
}
}
else if(instance is ISet<object>)
{
ISet<object> entries = (ISet<object>) instance;
ISet<InjectionPlan> plans = new MonotonicSet<InjectionPlan>();
foreach (object entry in entries)
{
if(entry is IClassNode)
{
BuildInjectionPlan((IClassNode)entry, memo);
InjectionPlan p2 = null;
memo.TryGetValue((INode)entry, out p2);
if (p2 != null)
{
plans.Add(p2);
}
}
else
{
plans.Add(new CsInstance(n, entry));
}
}
ip = new SetInjectionPlan(n, plans);
}
else
{
ip = new CsInstance(np, instance);
}
}
else if (n is IClassNode)
{
IClassNode cn = (IClassNode) n;
// Any (or all) of the next four values might be null; that's fine.
object cached = GetCachedInstance(cn);
IClassNode boundImpl = this.configuration.GetBoundImplementation(cn);
IClassNode defaultImpl = ParseDefaultImplementation(cn);
IClassNode ec = this.configuration.GetBoundConstructor(cn);
ip = BuildClassNodeInjectionPlan(cn, cached, ec, boundImpl, defaultImpl, memo);
} else if (n is IPackageNode)
{
throw new ArgumentException(
"Request to instantiate Java package as object");
} else
{
throw new IllegalStateException(
"Type hierarchy contained unknown node type!:" + n);
}
memo[n] = ip;
}