/// <summary>
/// Get a Type object representing the named type, along with a boolean indicating if the type
/// definition is from a WinMD file.
/// </summary>
internal Type GetTypeFromName(string name, ref bool isWinRT)
{
if (m_interfaceNameMap != null)
{
int i = m_interfaceNameMap.FindString(name);
if (i >= 0)
{
isWinRT = m_interfaceData[i].IsIInspectableOrDelegate;
return(InteropExtensions.GetTypeFromHandle(m_interfaceData[i].ItfType));
}
}
if (m_classNameMap != null)
{
int i = m_classNameMap.FindString(name);
if (i >= 0)
{
isWinRT = (m_classData[i].Flags & McgClassFlags.IsWinRT) != 0;
return(InteropExtensions.GetTypeFromHandle(m_classData[i].ClassType));
}
}
return(null);
}
/// <summary>
/// Search this module's m_additionalClassData table for information on the requested type.
/// This function returns true if and only if it is able to locate a non-null RuntimeTypeHandle
/// record for the requested type.
/// </summary>
internal bool TryGetClassFromNameInAdditionalClassData(string name, out RuntimeTypeHandle classType)
{
if (m_additionalClassNameMap != null)
{
//
// Search in additional class data for the closest match (for example, for MyButton, the
// closest match is probably Button)
//
int i = m_additionalClassNameMap.FindString(name);
if (i >= 0)
{
//
// We've found a match. The matching row points to the "next best" strongly-typed RCW
// type that we should create (in place of the original class)
// For example, if native code is passing MatrixTransform, and MCG only knows about its
// base class DependencyObject, we should hand out DependencyObject
//
int classDataIndex = m_additionalClassData[i].ClassDataIndex;
RuntimeTypeHandle typeHandle = m_additionalClassData[i].ClassType;
if (classDataIndex >= 0)
{
//
// This module's m_additionalClassData table points to a m_classData row which describes
// the nearest available base class of the requested type. This row can be immediately used
// to compute the RuntimeTypeHandle that best describes the type.
//
classType = ComputeClosestClassForClassIndex(classDataIndex);
if (!classType.Equals(default(RuntimeTypeHandle)))
{
return(true);
}
}
else
{
//
// This module's m_additionalClassData table lists a RuntimeTypeHandle which describes
// the nearest available base class of the requested type. If this nearest base class was
// not reduced away, then use it to locate RuntimeTypeHandle describing this "next best" type.
//
if (!typeHandle.Equals(s_DependencyReductionTypeRemovedTypeHandle))
{
classType = typeHandle;
if (!classType.Equals(default(RuntimeTypeHandle)))
{
return(true);
}
}
}
}
}
classType = default(RuntimeTypeHandle);
return(false);
}
/// <summary>
/// Returns the requested interface pointer specified by itfType from the CCWActivationFactory
/// object instance. Typically the requested interface is the
/// System.Runtime.InteropServices.WindowsRuntime.IActivationFactory interface.
/// </summary>
public unsafe int GetCCWActivationFactory(HSTRING activatableClassId, RuntimeTypeHandle itfType, IntPtr *factoryOut)
{
try
{
string classId = McgMarshal.HStringToString(activatableClassId);
if (classId == null)
{
return(Interop.COM.E_INVALIDARG);
}
RuntimeTypeHandle factoryTypeHandle = default(RuntimeTypeHandle);
if (m_ccwFactoriesNameMap != null)
{
int slot = m_ccwFactoriesNameMap.FindString(classId);
if (slot >= 0)
{
factoryTypeHandle = m_ccwFactories[slot].FactoryType;
}
}
if (factoryTypeHandle.IsNull())
{
return(Interop.COM.E_NOINTERFACE);
}
object factory = InteropExtensions.RuntimeNewObject(factoryTypeHandle);
*factoryOut = McgMarshal.ObjectToComInterface(
factory,
itfType);
}
catch (Exception ex)
{
*factoryOut = default(IntPtr);
return(McgMarshal.GetHRForExceptionWinRT(ex));
}
return(Interop.COM.S_OK);
}
/// <summary>
/// Unbox the WinRT boxed IReference<T>/IReferenceArray<T> and box it into Object so that managed
/// code can unbox it later into the real T
/// </summary>
internal bool TryGetUnboxingStub(string className, out IntPtr unboxingStub)
{
unboxingStub = default(IntPtr);
if (m_boxingData == null)
{
return(false);
}
Debug.Assert(!String.IsNullOrEmpty(className));
//
// Avoid searching for null/empty name. BoxingData has null name entries
//
int slot = m_boxingDataNameMap.FindString(className);
if (slot >= 0)
{
unboxingStub = m_boxingData[slot].UnboxingStub;
return(true);
}
return(false);
}
