public PyModuleSpec find_spec(FrameContext context, string name, string import_path, PyModule target)
{
PyModuleSpec found = null;
ClrContext clrContext = null;
if (context.HasVariable(ClrContext.FrameContextTokenName))
{
clrContext = (ClrContext)context.GetVariable(ClrContext.FrameContextTokenName);
found = findInAssemblies(name, clrContext.AddedReferences, clrContext);
if (found != null)
{
return(found);
}
}
// If there isn't a CLR context yet, we still search the default assemblies and load from there.
// Attach the context using the default modules as the added references.
if (found == null)
{
found = findInAssemblies(name, DefaultAssemblies, clrContext);
if (found != null)
{
if (clrContext == null)
{
clrContext = new ClrContext();
clrContext.AddAssembliesToReferences(DefaultAssemblies);
context.AddVariable(ClrContext.FrameContextTokenName, clrContext);
found.LoaderState = clrContext;
}
return(found);
}
}
return(null);
}
static LastException()
{
if (myThreadPointerFieldInfo == null)
{
// Dont read the don´t or you will get scared.
// I prefer to read this more like: If you dont know the rules you will
// get biten by the next .NET Framework update
myThreadPointerFieldInfo = typeof(Thread).GetField("DONT_USE_InternalThread", BindingFlags.Instance | BindingFlags.NonPublic);
}
if (myThreadOffset == -1)
{
ClrContext context = ClrContext.None;
context |= (IntPtr.Size == 8) ? ClrContext.Is64Bit : ClrContext.Is32Bit;
context |= (Environment.Version.Major == 2) ? ClrContext.IsNet2 : ClrContext.None;
context |= (Environment.Version.Major == 4) ? ClrContext.IsNet4 : ClrContext.None;
context |= (Environment.Version.Major == 4 && Environment.Version.Revision == 42000) ? ClrContext.IsNet4_6 : ClrContext.None;
switch (context)
{
case ClrContext.Is32Bit | ClrContext.IsNet4 | ClrContext.IsNet4_6:
myThreadOffset = 0x18C;
break;
case ClrContext.Is32Bit | ClrContext.IsNet4:
myThreadOffset = 0x188;
break;
case ClrContext.Is32Bit | ClrContext.IsNet2:
myThreadOffset = 0x180;
break;
case ClrContext.Is64Bit | ClrContext.IsNet4 | ClrContext.IsNet4_6:
myThreadOffset = 0x258;
break;
case ClrContext.Is64Bit | ClrContext.IsNet4:
myThreadOffset = 0x250;
break;
case ClrContext.Is64Bit | ClrContext.IsNet2:
myThreadOffset = 0x240;
break;
}
}
}
private PyModuleSpec findInAssemblies(string name, List <Assembly> assemblies, ClrContext loaderContext)
{
// TODO: Try to find a faster way to do these lookups.
foreach (var assembly in assemblies)
{
foreach (var type in assembly.GetTypes())
{
if (type.Namespace == name)
{
var spec = PyModuleSpec.Create(name, loader, "", null);
spec.LoaderState = loaderContext;
return(spec);
}
}
// Still here? Maybe it's an actual type, not an assembly!
foreach (var type in assembly.GetTypes())
{
if (type.Name == name)
{
var spec = PyModuleSpec.Create(name, loader, "", null);
spec.LoaderState = loaderContext;
return(spec);
}
}
}
return(null);
}
