/// <summary>
/// Set the 'args' slot on a python exception object that wraps
/// a CLR exception. This is needed for pickling CLR exceptions as
/// BaseException_reduce will only check the slots, bypassing the
/// __getattr__ implementation, and thus dereferencing a NULL
/// pointer.
/// </summary>
internal static bool SetArgsAndCause(BorrowedReference ob, Exception e)
{
NewReference args;
if (!string.IsNullOrEmpty(e.Message))
{
args = Runtime.PyTuple_New(1);
using var msg = Runtime.PyString_FromString(e.Message);
Runtime.PyTuple_SetItem(args.Borrow(), 0, msg.StealOrThrow());
}
else
{
args = Runtime.PyTuple_New(0);
}
using (args)
{
if (Runtime.PyObject_SetAttrString(ob, "args", args.Borrow()) != 0)
{
return(false);
}
}
if (e.InnerException != null)
{
// Note: For an AggregateException, InnerException is only the first of the InnerExceptions.
using var cause = CLRObject.GetReference(e.InnerException);
Runtime.PyException_SetCause(ob, cause.Steal());
}
return(true);
}
/// <summary>
/// Set the 'args' slot on a python exception object that wraps
/// a CLR exception. This is needed for pickling CLR exceptions as
/// BaseException_reduce will only check the slots, bypassing the
/// __getattr__ implementation, and thus dereferencing a NULL
/// pointer.
/// </summary>
/// <param name="ob">The python object wrapping </param>
internal static void SetArgsAndCause(IntPtr ob)
{
// e: A CLR Exception
Exception e = ExceptionClassObject.ToException(ob);
if (e == null)
{
return;
}
IntPtr args;
if (!string.IsNullOrEmpty(e.Message))
{
args = Runtime.PyTuple_New(1);
IntPtr msg = Runtime.PyUnicode_FromString(e.Message);
Runtime.PyTuple_SetItem(args, 0, msg);
}
else
{
args = Runtime.PyTuple_New(0);
}
Marshal.WriteIntPtr(ob, ExceptionOffset.args, args);
#if PYTHON3
if (e.InnerException != null)
{
IntPtr cause = CLRObject.GetInstHandle(e.InnerException);
Marshal.WriteIntPtr(ob, ExceptionOffset.cause, cause);
}
#endif
}
/// <summary>
/// Set the 'args' slot on a python exception object that wraps
/// a CLR exception. This is needed for pickling CLR exceptions as
/// BaseException_reduce will only check the slots, bypassing the
/// __getattr__ implementation, and thus dereferencing a NULL
/// pointer.
/// </summary>
internal static void SetArgsAndCause(BorrowedReference ob, Exception e)
{
IntPtr args;
if (!string.IsNullOrEmpty(e.Message))
{
args = Runtime.PyTuple_New(1);
IntPtr msg = Runtime.PyString_FromString(e.Message);
Runtime.PyTuple_SetItem(args, 0, msg);
}
else
{
args = Runtime.PyTuple_New(0);
}
using var argsTuple = NewReference.DangerousFromPointer(args);
if (Runtime.PyObject_SetAttrString(ob, "args", argsTuple) != 0)
{
throw PythonException.ThrowLastAsClrException();
}
if (e.InnerException != null)
{
// Note: For an AggregateException, InnerException is only the first of the InnerExceptions.
using var cause = CLRObject.GetReference(e.InnerException);
Runtime.PyException_SetCause(ob, cause.Steal());
}
}
//====================================================================
// helper methods for raising warnings
//====================================================================
/// <summary>
/// Alias for Python's warnings.warn() function.
/// </summary>
public static void warn(string message, IntPtr exception, int stacklevel)
{
if (exception == IntPtr.Zero ||
(Runtime.PyObject_IsSubclass(exception, Exceptions.Warning) != 1))
{
Exceptions.RaiseTypeError("Invalid exception");
}
Runtime.XIncref(warnings_module);
IntPtr warn = Runtime.PyObject_GetAttrString(warnings_module, "warn");
Runtime.XDecref(warnings_module);
Exceptions.ErrorCheck(warn);
IntPtr args = Runtime.PyTuple_New(3);
IntPtr msg = Runtime.PyString_FromString(message);
Runtime.XIncref(exception); // PyTuple_SetItem steals a reference
IntPtr level = Runtime.PyInt_FromInt32(stacklevel);
Runtime.PyTuple_SetItem(args, 0, msg);
Runtime.PyTuple_SetItem(args, 1, exception);
Runtime.PyTuple_SetItem(args, 2, level);
IntPtr result = Runtime.PyObject_CallObject(warn, args);
Exceptions.ErrorCheck(result);
Runtime.XDecref(warn);
Runtime.XDecref(result);
Runtime.XDecref(args);
}
//====================================================================
// Implements __setitem__ for reflected classes and value types.
//====================================================================
public static int mp_ass_subscript(IntPtr ob, IntPtr idx, IntPtr v)
{
//ManagedType self = GetManagedObject(ob);
IntPtr tp = Runtime.PyObject_TYPE(ob);
ClassBase cls = (ClassBase)GetManagedObject(tp);
if (cls.indexer == null || !cls.indexer.CanSet)
{
Exceptions.SetError(Exceptions.TypeError,
"object doesn't support item assignment"
);
return(-1);
}
// Arg may be a tuple in the case of an indexer with multiple
// parameters. If so, use it directly, else make a new tuple
// with the index arg (method binders expect arg tuples).
IntPtr args = idx;
bool free = false;
if (!Runtime.PyTuple_Check(idx))
{
args = Runtime.PyTuple_New(1);
Runtime.Incref(idx);
Runtime.PyTuple_SetItem(args, 0, idx);
free = true;
}
int i = Runtime.PyTuple_Size(args);
IntPtr real = Runtime.PyTuple_New(i + 1);
for (int n = 0; n < i; n++)
{
IntPtr item = Runtime.PyTuple_GetItem(args, n);
Runtime.Incref(item);
Runtime.PyTuple_SetItem(real, n, item);
}
Runtime.Incref(v);
Runtime.PyTuple_SetItem(real, i, v);
try {
cls.indexer.SetItem(ob, real);
}
finally {
Runtime.Decref(real);
if (free)
{
Runtime.Decref(args);
}
}
if (Exceptions.ErrorOccurred())
{
return(-1);
}
return(0);
}
/// <summary>
/// Set the 'args' slot on a python exception object that wraps
/// a CLR exception. This is needed for pickling CLR exceptions as
/// BaseException_reduce will only check the slots, bypassing the
/// __getattr__ implementation, and thus dereferencing a NULL
/// pointer.
/// </summary>
/// <param name="ob">The python object wrapping </param>
internal static void SetArgsAndCause(Exception e, IntPtr ob)
{
IntPtr args;
if (!string.IsNullOrEmpty(e.Message))
{
args = Runtime.PyTuple_New(1);
IntPtr msg = Runtime.PyUnicode_FromString(e.Message);
Runtime.PyTuple_SetItem(args, 0, msg);
}
else
{
args = Runtime.PyTuple_New(0);
}
if (Runtime.PyObject_SetAttrString(ob, "args", args) != 0)
{
throw new PythonException();
}
if (e.InnerException != null)
{
// Note: For an AggregateException, InnerException is only the first of the InnerExceptions.
using var cause = CLRObject.GetReference(e.InnerException);
Runtime.PyException_SetCause(ob, cause.DangerousMoveToPointer());
}
}
static void SetupImportHook()
{
// Create the import hook module
using var import_hook_module = Runtime.PyModule_New("clr.loader");
BorrowedReference mod_dict = Runtime.PyModule_GetDict(import_hook_module.BorrowOrThrow());
Debug.Assert(mod_dict != null);
// Run the python code to create the module's classes.
var builtins = Runtime.PyEval_GetBuiltins();
var exec = Runtime.PyDict_GetItemString(builtins, "exec");
using var args = Runtime.PyTuple_New(2);
PythonException.ThrowIfIsNull(args);
using var codeStr = Runtime.PyString_FromString(LoaderCode);
Runtime.PyTuple_SetItem(args.Borrow(), 0, codeStr.StealOrThrow());
// reference not stolen due to overload incref'ing for us.
Runtime.PyTuple_SetItem(args.Borrow(), 1, mod_dict);
Runtime.PyObject_Call(exec, args.Borrow(), default).Dispose();
// Set as a sub-module of clr.
if (Runtime.PyModule_AddObject(ClrModuleReference, "loader", import_hook_module.Steal()) != 0)
{
throw PythonException.ThrowLastAsClrException();
}
// Finally, add the hook to the meta path
var findercls = Runtime.PyDict_GetItemString(mod_dict, "DotNetFinder");
using var finderCtorArgs = Runtime.PyTuple_New(0);
using var finder_inst = Runtime.PyObject_CallObject(findercls, finderCtorArgs.Borrow());
var metapath = Runtime.PySys_GetObject("meta_path");
PythonException.ThrowIfIsNotZero(Runtime.PyList_Append(metapath, finder_inst.BorrowOrThrow()));
}
/// <summary>
/// This will return default arguments a new instance of a tuple. The size
/// of the tuple will indicate the number of default arguments.
/// </summary>
/// <param name="args">This is pointing to the tuple args passed in</param>
/// <returns>a new instance of the tuple containing the default args</returns>
internal IntPtr GetDefaultArgs(IntPtr args)
{
// if we don't need default args return empty tuple
if (!NeedsDefaultArgs(args))
{
return(Runtime.PyTuple_New(0));
}
var pynargs = Runtime.PyTuple_Size(args);
// Get the default arg tuple
MethodBase[] methods = SetterBinder.GetMethods();
MethodBase mi = methods[0];
ParameterInfo[] pi = mi.GetParameters();
int clrnargs = pi.Length - 1;
IntPtr defaultArgs = Runtime.PyTuple_New(clrnargs - pynargs);
for (var i = 0; i < clrnargs - pynargs; i++)
{
if (pi[i + pynargs].DefaultValue == DBNull.Value)
{
continue;
}
IntPtr arg = Converter.ToPython(pi[i + pynargs].DefaultValue, pi[i + pynargs].ParameterType);
Runtime.PyTuple_SetItem(defaultArgs, i, arg);
}
return(defaultArgs);
}
//====================================================================
// Exceptions __getattribute__ implementation.
// handles Python's args and message attributes
//====================================================================
public static IntPtr tp_getattro(IntPtr ob, IntPtr key)
{
if (!Runtime.PyString_Check(key))
{
Exceptions.SetError(Exceptions.TypeError, "string expected");
return(IntPtr.Zero);
}
string name = Runtime.GetManagedString(key);
if (name == "args")
{
Exception e = ToException(ob);
IntPtr args;
if (e.Message != String.Empty)
{
args = Runtime.PyTuple_New(1);
IntPtr msg = Runtime.PyUnicode_FromString(e.Message);
Runtime.PyTuple_SetItem(args, 0, msg);
}
else
{
args = Runtime.PyTuple_New(0);
}
return(args);
}
if (name == "message")
{
return(ExceptionClassObject.tp_str(ob));
}
return(Runtime.PyObject_GenericGetAttr(ob, key));
}
private void GetArgs(object[] inargs, CallInfo callInfo, out PyTuple args, out PyDict kwargs)
{
if (callInfo == null || callInfo.ArgumentNames.Count == 0)
{
GetArgs(inargs, out args, out kwargs);
return;
}
// Support for .net named arguments
var namedArgumentCount = callInfo.ArgumentNames.Count;
var regularArgumentCount = callInfo.ArgumentCount - namedArgumentCount;
var argTuple = Runtime.PyTuple_New(regularArgumentCount);
for (int i = 0; i < regularArgumentCount; ++i)
{
AddArgument(argTuple, i, inargs[i]);
}
args = new PyTuple(argTuple);
var namedArgs = new object[namedArgumentCount * 2];
for (int i = 0; i < namedArgumentCount; ++i)
{
namedArgs[i * 2] = callInfo.ArgumentNames[i];
namedArgs[i * 2 + 1] = inargs[regularArgumentCount + i];
}
kwargs = Py.kw(namedArgs);
}
private void GetArgs(object[] inargs, out PyTuple args, out PyDict kwargs)
{
int arg_count;
for (arg_count = 0; arg_count < inargs.Length && !(inargs[arg_count] is Py.KeywordArguments); ++arg_count)
{
;
}
IntPtr argtuple = Runtime.PyTuple_New(arg_count);
for (var i = 0; i < arg_count; i++)
{
AddArgument(argtuple, i, inargs[i]);
}
args = new PyTuple(argtuple);
kwargs = null;
for (int i = arg_count; i < inargs.Length; i++)
{
if (!(inargs[i] is Py.KeywordArguments))
{
throw new ArgumentException("Keyword arguments must come after normal arguments.");
}
if (kwargs == null)
{
kwargs = (Py.KeywordArguments)inargs[i];
}
else
{
kwargs.Update((Py.KeywordArguments)inargs[i]);
}
}
}
static void SetupImportHook()
{
// Create the import hook module
var import_hook_module = Runtime.PyModule_New("clr.loader");
// Run the python code to create the module's classes.
var builtins = Runtime.PyEval_GetBuiltins();
var exec = Runtime.PyDict_GetItemString(builtins, "exec");
using var args = NewReference.DangerousFromPointer(Runtime.PyTuple_New(2));
var codeStr = NewReference.DangerousFromPointer(Runtime.PyString_FromString(LoaderCode));
Runtime.PyTuple_SetItem(args, 0, codeStr);
var mod_dict = Runtime.PyModule_GetDict(import_hook_module);
// reference not stolen due to overload incref'ing for us.
Runtime.PyTuple_SetItem(args, 1, mod_dict);
Runtime.PyObject_Call(exec, args, default).Dispose();
// Set as a sub-module of clr.
if (Runtime.PyModule_AddObject(ClrModuleReference, "loader", import_hook_module.DangerousGetAddress()) != 0)
{
Runtime.XDecref(import_hook_module.DangerousGetAddress());
throw PythonException.ThrowLastAsClrException();
}
// Finally, add the hook to the meta path
var findercls = Runtime.PyDict_GetItemString(mod_dict, "DotNetFinder");
var finderCtorArgs = NewReference.DangerousFromPointer(Runtime.PyTuple_New(0));
var finder_inst = Runtime.PyObject_CallObject(findercls, finderCtorArgs);
var metapath = Runtime.PySys_GetObject("meta_path");
Runtime.PyList_Append(metapath, finder_inst);
}
/// <summary>
/// This will return default arguments a new instance of a tuple. The size
/// of the tuple will indicate the number of default arguments.
/// </summary>
/// <param name="args">This is pointing to the tuple args passed in</param>
/// <returns>a new instance of the tuple containing the default args</returns>
internal NewReference GetDefaultArgs(BorrowedReference args)
{
// if we don't need default args return empty tuple
if (!NeedsDefaultArgs(args))
{
return(Runtime.PyTuple_New(0));
}
var pynargs = Runtime.PyTuple_Size(args);
// Get the default arg tuple
var methods = SetterBinder.GetMethods();
MethodBase mi = methods[0].MethodBase;
ParameterInfo[] pi = mi.GetParameters();
int clrnargs = pi.Length - 1;
var defaultArgs = Runtime.PyTuple_New(clrnargs - pynargs);
for (var i = 0; i < clrnargs - pynargs; i++)
{
if (pi[i + pynargs].DefaultValue == DBNull.Value)
{
continue;
}
using var arg = Converter.ToPython(pi[i + pynargs].DefaultValue, pi[i + pynargs].ParameterType);
Runtime.PyTuple_SetItem(defaultArgs.Borrow(), i, arg.Steal());
}
return(defaultArgs);
}
/// <summary>
/// PyTuple Constructor
/// </summary>
///
/// <remarks>
/// Creates a new empty PyTuple.
/// </remarks>
public PyTuple() : base()
{
obj = Runtime.PyTuple_New(0);
if (obj == IntPtr.Zero)
{
throw new PythonException();
}
}
/// <summary>
/// PyTuple Constructor
/// </summary>
/// <remarks>
/// Creates a new PyTuple from an array of PyObject instances.
/// <para />
/// See caveats about PyTuple_SetItem:
/// https://www.coursehero.com/file/p4j2ogg/important-exceptions-to-this-rule-PyTupleSetItem-and-PyListSetItem-These/
/// </remarks>
public PyTuple(PyObject[] items)
{
int count = items.Length;
obj = Runtime.PyTuple_New(count);
for (var i = 0; i < count; i++)
{
IntPtr ptr = items[i].obj;
Runtime.XIncref(ptr);
Runtime.PyTuple_SetItem(obj, i, ptr);
Runtime.CheckExceptionOccurred();
}
}
private static IntPtr TzInfo(DateTimeKind kind)
{
if (kind == DateTimeKind.Unspecified)
{
return(Runtime.PyNone);
}
var offset = kind == DateTimeKind.Local ? DateTimeOffset.Now.Offset : TimeSpan.Zero;
IntPtr tzInfoArgs = Runtime.PyTuple_New(2);
Runtime.PyTuple_SetItem(tzInfoArgs, 0, Runtime.PyFloat_FromDouble(offset.Hours));
Runtime.PyTuple_SetItem(tzInfoArgs, 1, Runtime.PyFloat_FromDouble(offset.Minutes));
return(Runtime.PyObject_CallObject(tzInfoCtor, tzInfoArgs));
}
/// <summary>
/// PyTuple Constructor
/// </summary>
/// <remarks>
/// Creates a new PyTuple from an array of PyObject instances.
/// <para />
/// See caveats about PyTuple_SetItem:
/// https://www.coursehero.com/file/p4j2ogg/important-exceptions-to-this-rule-PyTupleSetItem-and-PyListSetItem-These/
/// </remarks>
public PyTuple(PyObject[] items)
{
int count = items.Length;
obj = Runtime.PyTuple_New(count);
for (var i = 0; i < count; i++)
{
IntPtr ptr = items[i].obj;
Runtime.XIncref(ptr);
int res = Runtime.PyTuple_SetItem(obj, i, ptr);
PythonException.ThrowIfIsNotZero(res);
}
}
/// <summary>
/// PyTuple Constructor
/// </summary>
///
/// <remarks>
/// Creates a new PyTuple from an array of PyObject instances.
/// </remarks>
public PyTuple(PyObject[] items) : base()
{
int count = items.Length;
obj = Runtime.PyTuple_New(count);
for (int i = 0; i < count; i++)
{
IntPtr ptr = items[i].obj;
Runtime.XIncref(ptr);
int r = Runtime.PyTuple_SetItem(obj, i, ptr);
if (r < 0)
{
throw new PythonException();
}
}
}
public override ValueType Execute(ValueType arg)
{
var module = (IntPtr)arg;
using (Py.GIL())
{
var test_obj_call = PyRuntime.PyObject_GetAttrString(module, "test_obj_call");
PythonException.ThrowIfIsNull(test_obj_call);
var args = PyRuntime.PyTuple_New(0);
var res = PyRuntime.PyObject_CallObject(test_obj_call, args);
PythonException.ThrowIfIsNull(res);
PyRuntime.XDecref(args);
PyRuntime.XDecref(res);
}
return 0;
}
/// <summary>
/// Allows ctor selection to be limited to a single attempt at a
/// match by providing the MethodBase to use instead of searching
/// the entire MethodBinder.list (generic ArrayList)
/// </summary>
/// <param name="inst"> (possibly null) instance </param>
/// <param name="args"> PyObject* to the arg tuple </param>
/// <param name="kw"> PyObject* to the keyword args dict </param>
/// <param name="info"> The sole ContructorInfo to use or null </param>
/// <returns> The result of the constructor call with converted params </returns>
/// <remarks>
/// 2010-07-24 BC: I added the info parameter to the call to Bind()
/// Binding binding = this.Bind(inst, args, kw, info);
/// to take advantage of Bind()'s ability to use a single MethodBase (CI or MI).
/// </remarks>
internal object InvokeRaw(IntPtr inst, IntPtr args, IntPtr kw,
MethodBase info)
{
Binding binding = this.Bind(inst, args, kw, info);
Object result;
if (binding == null)
{
// It is possible for __new__ to be invoked on construction
// of a Python subclass of a managed class, so args may
// reflect more args than are required to instantiate the
// class. So if we cant find a ctor that matches, we'll see
// if there is a default constructor and, if so, assume that
// any extra args are intended for the subclass' __init__.
IntPtr eargs = Runtime.PyTuple_New(0);
binding = this.Bind(inst, eargs, kw);
Runtime.Decref(eargs);
if (binding == null)
{
Exceptions.SetError(Exceptions.TypeError,
"no constructor matches given arguments"
);
return(null);
}
}
// Fire the selected ctor and catch errors...
ConstructorInfo ci = (ConstructorInfo)binding.info;
// Object construction is presumed to be non-blocking and fast
// enough that we shouldn't really need to release the GIL.
try {
result = ci.Invoke(binding.args);
}
catch (Exception e) {
if (e.InnerException != null)
{
e = e.InnerException;
}
Exceptions.SetError(e);
return(null);
}
return(result);
}
private void GetArgs(object[] inargs, out PyTuple args, out PyDict kwargs)
{
int arg_count;
for (arg_count = 0; arg_count < inargs.Length && !(inargs[arg_count] is Py.KeywordArguments); ++arg_count)
{
;
}
IntPtr argtuple = Runtime.PyTuple_New(arg_count);
for (int i = 0; i < arg_count; i++)
{
IntPtr ptr;
if (inargs[i] is PyObject)
{
ptr = ((PyObject)inargs[i]).Handle;
Runtime.Incref(ptr);
}
else
{
ptr = Converter.ToPython(inargs[i], inargs[i].GetType());
}
if (Runtime.PyTuple_SetItem(argtuple, i, ptr) < 0)
{
throw new PythonException();
}
}
args = new PyTuple(argtuple);
kwargs = null;
for (int i = arg_count; i < inargs.Length; i++)
{
if (!(inargs[i] is Py.KeywordArguments))
{
throw new ArgumentException("Keyword arguments must come after normal arguments.");
}
if (kwargs == null)
{
kwargs = (Py.KeywordArguments)inargs[i];
}
else
{
kwargs.Update((Py.KeywordArguments)inargs[i]);
}
}
}
private static IntPtr FromArray(PyObject[] items)
{
int count = items.Length;
IntPtr val = Runtime.PyTuple_New(count);
for (var i = 0; i < count; i++)
{
IntPtr ptr = items[i].obj;
Runtime.XIncref(ptr);
int res = Runtime.PyTuple_SetItem(val, i, ptr);
if (res != 0)
{
Runtime.Py_DecRef(val);
throw PythonException.ThrowLastAsClrException();
}
}
return(val);
}
public object TrueDispatch(ArrayList args)
{
MethodInfo method = dtype.GetMethod("Invoke");
ParameterInfo[] pi = method.GetParameters();
IntPtr pyargs = Runtime.PyTuple_New(pi.Length);
Type rtype = method.ReturnType;
for (int i = 0; i < pi.Length; i++)
{
// Here we own the reference to the Python value, and we
// give the ownership to the arg tuple.
IntPtr arg = Converter.ToPython(args[i], pi[i].ParameterType);
Runtime.PyTuple_SetItem(pyargs, i, arg);
}
IntPtr op = Runtime.PyObject_Call(target, pyargs, IntPtr.Zero);
Runtime.Decref(pyargs);
if (op == IntPtr.Zero)
{
PythonException e = new PythonException();
throw e;
}
if (rtype == typeof(void))
{
return(null);
}
Object result = null;
if (!Converter.ToManaged(op, rtype, out result, false))
{
string s = "could not convert Python result to " +
rtype.ToString();
Runtime.Decref(op);
throw new ConversionException(s);
}
Runtime.Decref(op);
return(result);
}
//====================================================================
// Implements __getitem__ for reflected classes and value types.
//====================================================================
public static IntPtr mp_subscript(IntPtr ob, IntPtr idx)
{
//ManagedType self = GetManagedObject(ob);
IntPtr tp = Runtime.PyObject_TYPE(ob);
ClassBase cls = (ClassBase)GetManagedObject(tp);
if (cls.indexer == null || !cls.indexer.CanGet)
{
Exceptions.SetError(Exceptions.TypeError,
"unindexable object"
);
return(IntPtr.Zero);
}
// Arg may be a tuple in the case of an indexer with multiple
// parameters. If so, use it directly, else make a new tuple
// with the index arg (method binders expect arg tuples).
IntPtr args = idx;
bool free = false;
if (!Runtime.PyTuple_Check(idx))
{
args = Runtime.PyTuple_New(1);
Runtime.XIncref(idx);
Runtime.PyTuple_SetItem(args, 0, idx);
free = true;
}
IntPtr value = IntPtr.Zero;
try
{
value = cls.indexer.GetItem(ob, args);
}
finally
{
if (free)
{
Runtime.XDecref(args);
}
}
return(value);
}
public static IntPtr tp_repr(IntPtr ob)
{
var co = GetManagedObject(ob) as CLRObject;
if (co == null)
{
return(Exceptions.RaiseTypeError("invalid object"));
}
try
{
//if __repr__ is defined, use it
var instType = co.inst.GetType();
System.Reflection.MethodInfo methodInfo = instType.GetMethod("__repr__");
if (methodInfo != null && methodInfo.IsPublic)
{
var reprString = methodInfo.Invoke(co.inst, null) as string;
return(Runtime.PyString_FromString(reprString));
}
//otherwise use the standard object.__repr__(inst)
IntPtr args = Runtime.PyTuple_New(1);
Runtime.XIncref(ob);
Runtime.PyTuple_SetItem(args, 0, ob);
IntPtr reprFunc = Runtime.PyObject_GetAttr(Runtime.PyBaseObjectType, PyIdentifier.__repr__);
var output = Runtime.PyObject_Call(reprFunc, args, IntPtr.Zero);
Runtime.XDecref(args);
Runtime.XDecref(reprFunc);
return(output);
}
catch (Exception e)
{
if (e.InnerException != null)
{
e = e.InnerException;
}
Exceptions.SetError(e);
return(IntPtr.Zero);
}
}
internal static IntPtr GenerateExceptionClass(IntPtr real)
{
if (real == ns_exc)
{
return(os_exc);
}
IntPtr nbases = Runtime.PyObject_GetAttrString(real, "__bases__");
if (Runtime.PyTuple_Size(nbases) != 1)
{
throw new SystemException("Invalid __bases__");
}
IntPtr nsbase = Runtime.PyTuple_GetItem(nbases, 0);
Runtime.Decref(nbases);
IntPtr osbase = GetExceptionClassWrapper(nsbase);
IntPtr baselist = Runtime.PyTuple_New(1);
Runtime.Incref(osbase);
Runtime.PyTuple_SetItem(baselist, 0, osbase);
IntPtr name = Runtime.PyObject_GetAttrString(real, "__name__");
IntPtr dict = Runtime.PyDict_New();
IntPtr mod = Runtime.PyObject_GetAttrString(real, "__module__");
Runtime.PyDict_SetItemString(dict, "__module__", mod);
Runtime.Decref(mod);
IntPtr subc = Runtime.PyClass_New(baselist, dict, name);
Runtime.Decref(baselist);
Runtime.Decref(dict);
Runtime.Decref(name);
Runtime.PyObject_SetAttrString(subc, "_class", real);
return(subc);
}
/// <summary>
/// PyTuple Constructor
/// </summary>
/// <remarks>
/// Creates a new PyTuple from an array of PyObject instances.
/// <para />
/// See caveats about PyTuple_SetItem:
/// https://www.coursehero.com/file/p4j2ogg/important-exceptions-to-this-rule-PyTupleSetItem-and-PyListSetItem-These/
/// </remarks>
public PyTuple(PyObject[] items)
{
int count = items.Length;
obj = Runtime.PyTuple_New(count);
if (obj == IntPtr.Zero)
{
throw new PythonException();
}
for (int i = 0; i < count; i++)
{
IntPtr ptr = items[i].obj;
Runtime.XIncref(ptr);
if (Runtime.PyTuple_SetItem(obj, i, ptr) != 0)
{
for (int j = i; j >= 0; j--)
{
Runtime.XDecref(items[j].obj);
}
throw new PythonException();
}
}
}
//====================================================================
// helper methods for raising warnings
//====================================================================
/// <summary>
/// Alias for Python's warnings.warn() function.
/// </summary>
public static void warn(string message, BorrowedReference exception, int stacklevel)
{
if (exception == null ||
(Runtime.PyObject_IsSubclass(exception, Exceptions.Warning) != 1))
{
Exceptions.RaiseTypeError("Invalid exception");
}
using var warn = Runtime.PyObject_GetAttrString(warnings_module.obj, "warn");
Exceptions.ErrorCheck(warn.Borrow());
using var argsTemp = Runtime.PyTuple_New(3);
BorrowedReference args = argsTemp.BorrowOrThrow();
using var msg = Runtime.PyString_FromString(message);
Runtime.PyTuple_SetItem(args, 0, msg.StealOrThrow());
Runtime.PyTuple_SetItem(args, 1, exception);
using var level = Runtime.PyInt_FromInt32(stacklevel);
Runtime.PyTuple_SetItem(args, 2, level.StealOrThrow());
using var result = Runtime.PyObject_CallObject(warn.Borrow(), args);
Exceptions.ErrorCheck(result.Borrow());
}
/// <summary>
/// Implements __setitem__ for reflected classes and value types.
/// </summary>
public static int mp_ass_subscript(IntPtr ob, IntPtr idx, IntPtr v)
{
IntPtr tp = Runtime.PyObject_TYPE(ob);
var cls = (ClassBase)GetManagedObject(tp);
if (cls.indexer == null || !cls.indexer.CanSet)
{
Exceptions.SetError(Exceptions.TypeError, "object doesn't support item assignment");
return(-1);
}
// Arg may be a tuple in the case of an indexer with multiple
// parameters. If so, use it directly, else make a new tuple
// with the index arg (method binders expect arg tuples).
IntPtr args = idx;
var free = false;
if (!Runtime.PyTuple_Check(idx))
{
args = Runtime.PyTuple_New(1);
Runtime.XIncref(idx);
Runtime.PyTuple_SetItem(args, 0, idx);
free = true;
}
// Get the args passed in.
var i = Runtime.PyTuple_Size(args);
IntPtr defaultArgs = cls.indexer.GetDefaultArgs(args);
var numOfDefaultArgs = Runtime.PyTuple_Size(defaultArgs);
var temp = i + numOfDefaultArgs;
IntPtr real = Runtime.PyTuple_New(temp + 1);
for (var n = 0; n < i; n++)
{
IntPtr item = Runtime.PyTuple_GetItem(args, n);
Runtime.XIncref(item);
Runtime.PyTuple_SetItem(real, n, item);
}
// Add Default Args if needed
for (var n = 0; n < numOfDefaultArgs; n++)
{
IntPtr item = Runtime.PyTuple_GetItem(defaultArgs, n);
Runtime.XIncref(item);
Runtime.PyTuple_SetItem(real, n + i, item);
}
// no longer need defaultArgs
Runtime.XDecref(defaultArgs);
i = temp;
// Add value to argument list
Runtime.XIncref(v);
Runtime.PyTuple_SetItem(real, i, v);
try
{
cls.indexer.SetItem(ob, real);
}
finally
{
Runtime.XDecref(real);
if (free)
{
Runtime.XDecref(args);
}
}
if (Exceptions.ErrorOccurred())
{
return(-1);
}
return(0);
}
internal virtual IntPtr Invoke(IntPtr inst, IntPtr args, IntPtr kw, Type type, MethodBase info, MethodInfo[] methodinfo)
{
List <Binding> bindings = Bind(inst, args, kw, type, info, methodinfo);
object result = null;
IntPtr ts = IntPtr.Zero;
if (bindings.Count == 0)
{
var value = "No method matches given arguments";
if (methodinfo != null && methodinfo.Length > 0)
{
value += $" for {methodinfo[0].Name}";
}
Exceptions.SetError(Exceptions.TypeError, value);
return(IntPtr.Zero);
}
if (allow_threads)
{
ts = PythonEngine.BeginAllowThreads();
}
#region COM Binding
Binding binding = null;
Exception ex = new Exception();
foreach (Binding bind in bindings)
{
if (binding != null)
{
break;
}
try
{
result = bind.info.Invoke(bind.inst, BindingFlags.Default, null, bind.args, null);
binding = bind;
}
catch (TargetInvocationException e)
{
System.Diagnostics.Debug.WriteLine("TargetInvocationException: " + bind.info.Name + " with " + bind.args.Length + " arguments.");
binding = null;
ex = e;
}
catch (Exception e)
{
binding = null;
ex = e;
}
}
if (binding == null)
{
if (ex.InnerException != null)
{
ex = ex.InnerException;
}
if (allow_threads)
{
PythonEngine.EndAllowThreads(ts);
}
Exceptions.SetError(ex);
return(IntPtr.Zero);
}
#endregion
if (allow_threads)
{
PythonEngine.EndAllowThreads(ts);
}
// If there are out parameters, we return a tuple containing
// the result followed by the out parameters. If there is only
// one out parameter and the return type of the method is void,
// we return the out parameter as the result to Python (for
// code compatibility with ironpython).
var mi = (MethodInfo)binding.info;
if (binding.outs == 1 && mi.ReturnType == typeof(void))
{
}
if (binding.outs > 0)
{
ParameterInfo[] pi = mi.GetParameters();
int c = pi.Length;
var n = 0;
IntPtr t = Runtime.PyTuple_New(binding.outs + 1);
IntPtr v = Converter.ToPython(result, mi.ReturnType);
Runtime.PyTuple_SetItem(t, n, v);
n++;
for (var i = 0; i < c; i++)
{
Type pt = pi[i].ParameterType;
if (pi[i].IsOut || pt.IsByRef)
{
v = Converter.ToPython(binding.args[i], pt);
Runtime.PyTuple_SetItem(t, n, v);
n++;
}
}
if (binding.outs == 1 && mi.ReturnType == typeof(void))
{
v = Runtime.PyTuple_GetItem(t, 1);
Runtime.XIncref(v);
Runtime.XDecref(t);
return(v);
}
return(t);
}
return(Converter.ToPython(result, mi.ReturnType));
}