/// <summary>
/// Try to resolve typename to type. This is a helper function on top of <see cref="IEvaluationContext.FindType"/> that parses [] and ? suffix
/// </summary>
/// <param name="context"></param>
/// <param name="name"></param>
/// <returns></returns>
public static Type ResolveType(IEvaluationContext context, string name)
{
bool nullable = false;
bool array = false;
if (name.EndsWith("[]", StringComparison.Ordinal))
{
array = true;
name = name.Substring(0, name.Length - 2);
}
if (name.EndsWith("?", StringComparison.Ordinal))
{
nullable = true;
name = name.Substring(0, name.Length - 1);
}
Type t = string.IsNullOrEmpty(name)?typeof(object): context.FindType(name);
if (t != null)
{
if (nullable)
{
t = typeof(Nullable <>).MakeGenericType(t);
}
if (array)
{
t = t.MakeArrayType();
}
}
return(t);
}
/// <summary>
/// Try to resolve typename to type. This is a helper function on top of <see cref="IEvaluationContext.FindType"/> that parses [] and ? suffix
/// </summary>
/// <param name="context"></param>
/// <param name="name"></param>
/// <returns></returns>
public static Type ResolveType(IEvaluationContext context, string name)
{
bool nullable = false;
bool array = false;
if (name.EndsWith("[]", StringComparison.Ordinal))
{
array = true;
name = name.Substring(0, name.Length - 2);
}
if (name.EndsWith("?", StringComparison.Ordinal))
{
nullable = true;
name = name.Substring(0, name.Length - 1);
}
Type t = context.FindType(name);
if (t != null)
{
if (nullable)
t = typeof(Nullable<>).MakeGenericType(t);
if (array)
t = t.MakeArrayType();
}
return t;
}
/// Evaluate the operation against stack
public void Eval(IEvaluationContext context, Stack <object> stack)
{
object[] p = OperationHelper.PopArray(stack, _paramCount);
if (!_thisCall && !_id.Contains(".") && !_isProperty)
{
stack.Push(context.CallExternal(_id, p));
return;
}
// ID is smth like x.y.z where we have no idea whether x is namespace,type, or object name. So we split it
// and ask
var parts = (!_id.Contains(".") && !string.IsNullOrEmpty(_id) && _paramCount != 0 && _isProperty)?((_id + ".").Split('.')):_id.Split('.');
IEnumerable <TypeObjectPair> typeAndObjects = null;
if (_thisCall)
{
var o = stack.Pop();
typeAndObjects = new TypeObjectPair[] { new TypeObjectPair(o.GetType(), o) };
}
object sub;
bool success = false;
for (int i = 0; i < parts.Length; ++i)
{
string currentPart = parts[i];
if (typeAndObjects == null)
{
string tn = string.Join(".", parts, 0, i + 1);
if (string.IsNullOrEmpty(tn))
{
typeAndObjects = context.GetNonameObjects();
}
else
{
if (context.TryGetExternal(tn, out sub))
{
success = true;
typeAndObjects = (sub == null) ? null : new[] { new TypeObjectPair(sub.GetType(), sub) };
}
else
{
var t = context.FindType(tn);
if (t != null)
{
typeAndObjects = new[] { new TypeObjectPair(t, null) };
success = true;
}
}
}
}
else
{
success = false;
foreach (var to in typeAndObjects)
{
if (_isProperty || i != parts.Length - 1)
{
success = Utils.TryGetProperty(to.Object, to.Type, currentPart, (i == parts.Length - 1) ? p : null, context.AccessPrivate, out sub);
}
else
{
success = Utils.TryCallMethod(to.Object, to.Type, currentPart, (i == parts.Length - 1) ? p : null, context.AccessPrivate, out sub);
}
if (success)
{
typeAndObjects = null;
if (!object.ReferenceEquals(sub, null))
{
typeAndObjects = new[] { new TypeObjectPair(sub.GetType(), sub) }
}
;
break;
}
}
if (!success)
{
// Last possible chance for COM objects where reflection does not work, but calling might!
if (i == parts.Length - 1)
{
foreach (var to in typeAndObjects)
{
if (to.Object == null)
{
continue;
}
if (_isProperty)
{
if (p.Length == 0)
{
stack.Push(Utils.GetProperty(to.Object, currentPart));
return;
}
}
else
{
try
{
stack.Push(Utils.CallMethod(to.Object, currentPart, p));
}
catch (Exception e)
{
var comex = e as System.Runtime.InteropServices.COMException;
var miex = e as MissingMethodException;
if (miex != null || (comex != null && ((uint)comex.ErrorCode == 0x80020006u || (uint)comex.ErrorCode == 0x80020005u)))
{
if (currentPart.StartsWith("set_", StringComparison.OrdinalIgnoreCase) && p.Length == 1)
{
Utils.SetPropertySimple(to.Object, currentPart.Substring(4), p[0]);
stack.Push(null);
return;
}
if (currentPart.StartsWith("get_", StringComparison.OrdinalIgnoreCase) && p.Length == 0)
{
stack.Push(Utils.GetProperty(to.Object, currentPart.Substring(4)));
return;
}
}
if (e is System.Reflection.TargetInvocationException && e.InnerException != null)
{
Utils.Rethrow(e.InnerException);
}
Utils.Rethrow(e);
}
return;
}
}
}
throw new MissingMemberException("Failed to resolve '" + currentPart + "' with " + p.Length + " arguments");
}
}
}
if (!success)
{
throw new MissingMemberException("Failed to resolve '" + _id + "' with " + p.Length + " arguments");
}
if (typeAndObjects == null)
{
stack.Push(null);
}
else
{
foreach (var o in typeAndObjects)
{
stack.Push(o.Object);
break;
}
}
}
/// Evaluate the operation against stack
public void Eval(IEvaluationContext context, Stack<object> stack)
{
object[] p = OperationHelper.PopArray(stack, _paramCount);
if (!_thisCall && !_id.Contains(".") && !_isProperty)
{
stack.Push(context.CallExternal(_id, p));
return;
}
// ID is smth like x.y.z where we have no idea whether x is namespace,type, or object name. So we split it
// and ask
var parts = (!_id.Contains(".") && !string.IsNullOrEmpty(_id) && _paramCount != 0 && _isProperty)?((_id+".").Split('.')):_id.Split('.');
IEnumerable<TypeObjectPair> typeAndObjects = null;
if (_thisCall)
{
var o=stack.Pop();
typeAndObjects = new TypeObjectPair[] { new TypeObjectPair(o.GetType(), o) };
}
object sub;
bool success = false;
for (int i=0;i<parts.Length;++i)
{
string currentPart = parts[i];
if (typeAndObjects == null)
{
string tn = string.Join(".", parts, 0, i + 1);
if (string.IsNullOrEmpty(tn))
typeAndObjects = context.GetNonameObjects();
else
{
if (context.TryGetExternal(tn, out sub))
{
success = true;
typeAndObjects = (sub == null) ? null : new[] {new TypeObjectPair(sub.GetType(), sub)};
}
else
{
var t = context.FindType(tn);
if (t != null)
{
typeAndObjects = new[] { new TypeObjectPair(t, null) };
success = true;
}
}
}
}
else
{
success = false;
foreach (var to in typeAndObjects)
{
if (_isProperty || i != parts.Length - 1)
success = Utils.TryGetProperty(to.Object, to.Type, currentPart, (i == parts.Length - 1) ? p : null, context.AccessPrivate,out sub);
else
success = Utils.TryCallMethod(to.Object, to.Type, currentPart, (i == parts.Length - 1) ? p : null, context.AccessPrivate, out sub);
if (success)
{
typeAndObjects = null;
if (!object.ReferenceEquals(sub, null))
typeAndObjects = new[] {new TypeObjectPair(sub.GetType(), sub)};
break;
}
}
if (!success)
{
// Last possible chance for COM objects where reflection does not work, but calling might!
if (i==parts.Length-1)
{
foreach (var to in typeAndObjects)
{
if (to.Object==null)
continue;
if (_isProperty)
{
if (p.Length == 0)
{
stack.Push(Utils.GetProperty(to.Object, currentPart));
return;
}
}
else
{
try
{
stack.Push(Utils.CallMethod(to.Object, currentPart, p));
}
catch(Exception e)
{
var comex = e as System.Runtime.InteropServices.COMException;
var miex = e as MissingMethodException;
if (miex != null || (comex != null && ((uint)comex.ErrorCode == 0x80020006u || (uint)comex.ErrorCode == 0x80020005u)))
{
if (currentPart.StartsWith("set_", StringComparison.OrdinalIgnoreCase) && p.Length == 1)
{
Utils.SetPropertySimple(to.Object, currentPart.Substring(4), p[0]);
stack.Push(null);
return;
}
if (currentPart.StartsWith("get_", StringComparison.OrdinalIgnoreCase) && p.Length == 0)
{
stack.Push(Utils.GetProperty(to.Object, currentPart.Substring(4)));
return;
}
}
if (e is System.Reflection.TargetInvocationException && e.InnerException!=null)
Utils.Rethrow(e.InnerException);
Utils.Rethrow(e);
}
return;
}
}
}
throw new MissingMemberException("Failed to resolve '" + currentPart + "' with "+p.Length+" arguments");
}
}
}
if (!success)
throw new MissingMemberException("Failed to resolve '" + _id + "' with " + p.Length + " arguments");
if (typeAndObjects==null)
stack.Push(null);
else
foreach (var o in typeAndObjects)
{
stack.Push(o.Object);
break;
}
}
