public IPythonModule ImportModule(string name)
{
if (string.IsNullOrWhiteSpace(name))
{
return(null);
}
if (name == _builtinModule?.Name)
{
return(_builtinModule);
}
IPythonModule mod;
if (_modules.TryGetValue(name, out mod))
{
return(mod);
}
var handle = Remote.LookupNamespace(name);
if (!handle.IsNull)
{
mod = MakeObject(handle) as IPythonModule;
if (mod != null)
{
return(_modules.GetOrAdd(name, mod));
}
}
if (_factory is AstPythonInterpreterFactory apf)
{
var ctxt = new AstPythonInterpreterFactory.TryImportModuleContext {
Interpreter = this,
BuiltinModule = _builtinModule,
ModuleCache = _modules
};
for (int retries = 5; retries > 0; --retries)
{
// The call should be cancelled by the cancellation token, but since we
// are blocking here we wait for slightly longer. Timeouts are handled
// gracefully by TryImportModuleAsync(), so we want those to trigger if
// possible, but if all else fails then we'll abort and treat it as an
// error.
// (And if we've got a debugger attached, don't time out at all.)
Task <AstPythonInterpreterFactory.TryImportModuleResult> impTask;
#if DEBUG
if (Debugger.IsAttached)
{
impTask = apf.TryImportModuleAsync(name, ctxt, CancellationToken.None);
}
else
{
#endif
var cts = new CancellationTokenSource(5000);
impTask = apf.TryImportModuleAsync(name, ctxt, cts.Token);
try {
if (!impTask.Wait(10000))
{
throw new OperationCanceledException();
}
} catch (OperationCanceledException) {
Debug.Fail("Import timeout");
return(null);
}
#if DEBUG
}
#endif
var result = impTask.Result;
mod = result.Module;
switch (result.Status)
{
case AstPythonInterpreterFactory.TryImportModuleResultCode.Success:
if (mod == null)
{
_modules.TryRemove(name, out _);
break;
}
return(mod);
case AstPythonInterpreterFactory.TryImportModuleResultCode.ModuleNotFound:
retries = 0;
_modules.TryRemove(name, out _);
break;
case AstPythonInterpreterFactory.TryImportModuleResultCode.NotSupported:
retries = 0;
break;
case AstPythonInterpreterFactory.TryImportModuleResultCode.NeedRetry:
case AstPythonInterpreterFactory.TryImportModuleResultCode.Timeout:
break;
}
}
}
var nameParts = name.Split('.');
mod = null;
if (nameParts.Length > 1 && (mod = ImportModule(nameParts[0])) != null)
{
for (int i = 1; i < nameParts.Length && mod != null; ++i)
{
mod = mod.GetMember(IronPythonModuleContext.ShowClrInstance, nameParts[i]) as IPythonModule;
}
}
return(_modules.GetOrAdd(name, mod));
}
public IPythonModule ImportModule(string name)
{
if (string.IsNullOrWhiteSpace(name))
{
return(null);
}
if (name == _builtinModule?.Name)
{
return(_builtinModule);
}
IPythonModule mod;
if (_modules.TryGetValue(name, out mod))
{
return(mod);
}
var handle = Remote.LookupNamespace(name);
if (!handle.IsNull)
{
mod = MakeObject(handle) as IPythonModule;
if (mod != null)
{
return(_modules.GetOrAdd(name, mod));
}
}
if (_typeDb != null)
{
var res = _typeDb.GetModule(name);
if (res != null)
{
return(res);
}
}
else if (_factory is AstPythonInterpreterFactory apf)
{
var ctxt = new AstPythonInterpreterFactory.TryImportModuleContext {
Interpreter = this,
BuiltinModule = _builtinModule,
ModuleCache = _modules
};
for (int retries = 5; retries > 0; --retries)
{
switch (apf.TryImportModule(name, out mod, ctxt))
{
case AstPythonInterpreterFactory.TryImportModuleResult.Success:
if (mod == null)
{
_modules.TryRemove(name, out _);
break;
}
return(mod);
case AstPythonInterpreterFactory.TryImportModuleResult.ModuleNotFound:
retries = 0;
_modules.TryRemove(name, out _);
break;
case AstPythonInterpreterFactory.TryImportModuleResult.NotSupported:
retries = 0;
break;
case AstPythonInterpreterFactory.TryImportModuleResult.NeedRetry:
case AstPythonInterpreterFactory.TryImportModuleResult.Timeout:
break;
}
}
}
var nameParts = name.Split('.');
mod = null;
if (nameParts.Length > 1 && (mod = ImportModule(nameParts[0])) != null)
{
for (int i = 1; i < nameParts.Length && mod != null; ++i)
{
mod = mod.GetMember(IronPythonModuleContext.ShowClrInstance, nameParts[i]) as IPythonModule;
}
}
return(_modules.GetOrAdd(name, mod));
}