private void FinishNodes(ParamTreeNode current)
{
current.FinishNode();
foreach (ParamTreeNode node in current.Children)
{
FinishNodes(node);
}
}
public void Walk(int param, ParamTreeNode node)
{
for (int i = 0; i < param + 1; i++)
{
Write(" ");
}
WriteLine(String.Format("{0} {1}", node.ParamType, node.Flags));
}
public void AddMethod(MethodTracker method)
{
#if DEBUG
if (fFinished)
{
throw new InvalidOperationException("Cannot add methods to finished param trees");
}
#endif
ParamTreeNode curNode = this;
ParameterInfo[] pis = method.GetParameters();
bool fIsParams = false;
if (pis.Length > 0 && ReflectionUtil.IsParamArray(pis[pis.Length - 1]))
{
fIsParams = true;
}
if (!method.IsStatic)
{
Type instType = method.DeclaringType;
if ((funcType & FunctionType.FunctionMethodMask) == FunctionType.FunctionMethodMask)
{
instType = typeof(InstanceArgument);
}
curNode = curNode.AppendChild(method, instType, NodeFlags.None, argumentCount == 1);
AppendParameters(method, curNode, pis, fIsParams, 1, 0);
}
else
{
int depthStart = 0;
if ((funcType & FunctionType.OpsFunction) != 0 &&
(funcType & FunctionType.FunctionMethodMask) == FunctionType.FunctionMethodMask)
{
// this is an ops function that is combined w/ an ops method. We need to support
// disambiguating between bound & unbound method calls, so we transform arg 1
// to an instance just like we do for non-static functions, and then skip the 1st
// parameter in AppendParameters. In either case we want both depths to
// start at 1 (we're appending @ depth 1, and reading from param 1 because we've
// used param 0) so we just use depthStart here for both.
depthStart = 1;
curNode = curNode.AppendChild(method, typeof(InstanceArgument), NodeFlags.None, argumentCount == 1);
}
AppendParameters(method, curNode, pis, fIsParams, depthStart, depthStart);
}
Methods.Add(method);
}
private void WalkWorker(IParamWalker callback, ParamTreeNode curNode, int depth)
{
callback.Walk(depth, curNode);
if (curNode.Children.Count != 0)
{
callback.PreArgument(depth + 1, curNode.Children.Count);
for (int i = 0; i < curNode.Children.Count; i++)
{
WalkWorker(callback, curNode.Children[i], depth + 1);
}
callback.PostArgument(depth + 1);
}
}
public ParamTreeNode AppendChild(MethodTracker method, Type curType, ParamTree.NodeFlags flags, bool fLastArg)
{
bool fFound = false;
ParamTreeNode res = this;
for (int i = 0; i < Children.Count; i++)
{
if (Children[i].ParamType == curType && Children[i].Flags == flags)
{
res = Children[i];
res.Methods.Add(method);
fFound = true;
break;
}
}
if (!fFound)
{
res = InsertNewNode(curType, flags);
res.Methods.Add(method);
}
else if (fLastArg)
{
// last node, we shouldn't be adding
// extra methods here. We have two ways
// we get here:
// 1. We have a static and non-static overload, prefer the instance method
// 2. We have default values for one of the methods, prefer the one w/o defaults.
//
// Both of these are identical checks: We prefer the method w/ less parameters.
Debug.Assert(res.Methods.Count == 2);
if (method.GetParameters().Length < res.Methods[0].GetParameters().Length)
{
// remove the old one.
res.Methods.RemoveAt(0);
}
else
{
// remove the new one.
res.Methods.RemoveAt(1);
}
}
return(res);
}
private void AppendParameters(MethodTracker method, ParamTreeNode curNode, ParameterInfo[] pis, bool fIsParams, int depthStart, int pisStart)
{
int argCnt = argumentCount;
for (int i = depthStart; i < argCnt; i++)
{
NodeFlags flags;
Type curType = GetCurrentType(pis, i - depthStart + pisStart, fIsParams, out flags);
if ((flags & NodeFlags.Out) != 0 && (i - depthStart + pisStart) < pis.Length)
{
// got an out param, need one more argument still...
argCnt++;
}
bool fLastArg = (i == argumentCount - 1);
curNode = curNode.AppendChild(method, curType, flags, fLastArg);
}
}
private ParamTreeNode InsertNewNode(Type newNodeType, ParamTree.NodeFlags flags)
{
ParamTreeNode newNode = new ParamTreeNode(newNodeType, flags);
if (newNodeType != null)
{
// we've made the node, use the element type for the checks below...
if (newNodeType.IsByRef)
{
newNodeType = newNodeType.GetElementType();
}
// insert based upon subclassing order (if we're a subclass
// of someone we need to come first). When we walk the tree we'll
// then emit checks for more specific types before less specific types.
OpsReflectedType newDt = Ops.GetDynamicTypeFromType(newNodeType) as OpsReflectedType;
Type extensibleType = null;
if (newDt != null)
{
extensibleType = newDt.GetTypeToExtend();
}
if (newNodeType != typeof(object))
{
for (int i = 0; i < Children.Count; i++)
{
Type childParamType = Children[i].ParamType;
if (childParamType == null)
{
// params method w/ mixed levels, no subclasses checks to be done.
continue;
}
if (childParamType.IsByRef)
{
childParamType = childParamType.GetElementType();
}
// extensible types are logically subclasses of their "parent" type, and
// therefore their check needs to go first. If extensible is added first
// then the real type will come next automatically, otherwise we'll
// check for the type here & early out if we're adding the extensible type.
if (newNodeType == extensibleType && childParamType == newDt.type)
{
Children.Insert(i, newNode);
return(newNode);
}
if (newNodeType.IsSubclassOf(childParamType) ||
(newNodeType.IsClass && childParamType.IsInterface)) // classes before interfaces
{
Children.Insert(i, newNode);
return(newNode);
}
}
}
}
Children.Add(newNode);
return(newNode);
}
