private object _ToClr(PyDict pyDict)
{
var dict = new Dictionary <K, V>();
foreach (PyObject key in pyDict.Keys())
{
var _key = this.Converter.ToClr <K>(key);
var _value = this.Converter.ToClr <V>(pyDict[key]);
dict.Add(_key, _value);
}
return(dict);
}
/// <summary>
/// Creates a new managed type derived from a base type with any virtual
/// methods overridden to call out to python if the associated python
/// object has overridden the method.
/// </summary>
internal static Type CreateDerivedType(string name,
Type baseType,
BorrowedReference dictRef,
string namespaceStr,
string assemblyName,
string moduleName = "Python.Runtime.Dynamic.dll")
{
// TODO: clean up
IntPtr py_dict = dictRef.DangerousGetAddress();
if (null != namespaceStr)
{
name = namespaceStr + "." + name;
}
if (null == assemblyName)
{
assemblyName = "Python.Runtime.Dynamic";
}
ModuleBuilder moduleBuilder = GetModuleBuilder(assemblyName, moduleName);
Type baseClass = baseType;
var interfaces = new List <Type> {
typeof(IPythonDerivedType)
};
// if the base type is an interface then use System.Object as the base class
// and add the base type to the list of interfaces this new class will implement.
if (baseType.IsInterface)
{
interfaces.Add(baseType);
baseClass = typeof(object);
}
TypeBuilder typeBuilder = moduleBuilder.DefineType(name,
TypeAttributes.Public | TypeAttributes.Class,
baseClass,
interfaces.ToArray());
// add a field for storing the python object pointer
// FIXME: fb not used
FieldBuilder fb = typeBuilder.DefineField("__pyobj__", typeof(CLRObject), FieldAttributes.Public);
// override any constructors
ConstructorInfo[] constructors = baseClass.GetConstructors();
foreach (ConstructorInfo ctor in constructors)
{
AddConstructor(ctor, baseType, typeBuilder);
}
// Override any properties explicitly overridden in python
var pyProperties = new HashSet <string>();
if (py_dict != IntPtr.Zero && Runtime.PyDict_Check(py_dict))
{
Runtime.XIncref(py_dict);
using (var dict = new PyDict(py_dict))
using (PyObject keys = dict.Keys())
{
foreach (PyObject pyKey in keys)
{
using (PyObject value = dict[pyKey])
{
if (value.HasAttr("_clr_property_type_"))
{
string propertyName = pyKey.ToString();
pyProperties.Add(propertyName);
// Add the property to the type
AddPythonProperty(propertyName, value, typeBuilder);
}
}
}
}
}
// override any virtual methods not already overridden by the properties above
MethodInfo[] methods = baseType.GetMethods();
var virtualMethods = new HashSet <string>();
foreach (MethodInfo method in methods)
{
if (!method.Attributes.HasFlag(MethodAttributes.Virtual) |
method.Attributes.HasFlag(MethodAttributes.Final))
{
continue;
}
// skip if this property has already been overridden
if ((method.Name.StartsWith("get_") || method.Name.StartsWith("set_")) &&
pyProperties.Contains(method.Name.Substring(4)))
{
continue;
}
// keep track of the virtual methods redirected to the python instance
virtualMethods.Add(method.Name);
// override the virtual method to call out to the python method, if there is one.
AddVirtualMethod(method, baseType, typeBuilder);
}
// Add any additional methods and properties explicitly exposed from Python.
if (py_dict != IntPtr.Zero && Runtime.PyDict_Check(py_dict))
{
Runtime.XIncref(py_dict);
using (var dict = new PyDict(py_dict))
using (PyObject keys = dict.Keys())
{
foreach (PyObject pyKey in keys)
{
using (PyObject value = dict[pyKey])
{
if (value.HasAttr("_clr_return_type_") && value.HasAttr("_clr_arg_types_"))
{
string methodName = pyKey.ToString();
// if this method has already been redirected to the python method skip it
if (virtualMethods.Contains(methodName))
{
continue;
}
// Add the method to the type
AddPythonMethod(methodName, value, typeBuilder);
}
}
}
}
}
// add the destructor so the python object created in the constructor gets destroyed
MethodBuilder methodBuilder = typeBuilder.DefineMethod("Finalize",
MethodAttributes.Family |
MethodAttributes.Virtual |
MethodAttributes.HideBySig,
CallingConventions.Standard,
typeof(void),
Type.EmptyTypes);
ILGenerator il = methodBuilder.GetILGenerator();
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Call, typeof(PythonDerivedType).GetMethod("Finalize"));
il.Emit(OpCodes.Ldarg_0);
il.Emit(OpCodes.Call, baseClass.GetMethod("Finalize", BindingFlags.NonPublic | BindingFlags.Instance));
il.Emit(OpCodes.Ret);
Type type = typeBuilder.CreateType();
// scan the assembly so the newly added class can be imported
Assembly assembly = Assembly.GetAssembly(type);
AssemblyManager.ScanAssembly(assembly);
// FIXME: assemblyBuilder not used
AssemblyBuilder assemblyBuilder = assemblyBuilders[assemblyName];
return(type);
}
public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
{
if (value == null)
{
serializer.Serialize(writer, null);
return;
}
var jobj = (PyObject)value;
var jojb_type = jobj.GetPythonType().ToString();
if (jojb_type == "<class 'NoneType'>")
{
writer.WriteNull();
}
else if (PyDict.IsDictType(jobj))
{
var dict = new PyDict(jobj);
var keys = dict.Keys();
writer.WriteStartObject();
foreach (PyObject key in keys)
{
string name = key.ToString();
var val = jobj[key];//.ToString();
writer.WritePropertyName(name);
serializer.Serialize(writer, val, null);
}
writer.WriteEndObject();
}
else if (PyLong.IsLongType(jobj))
{
var pobj = new PyLong(jobj);
writer.WriteValue(pobj.ToInt64());
}
else if (PyInt.IsIntType(jobj))
{
var pobj = new PyInt(jobj);
writer.WriteValue(pobj.ToInt32());
}
else if (PyFloat.IsFloatType(jobj))
{
var pobj = new PyFloat(jobj);
writer.WriteValue(pobj.ToDouble());
}
else if (PyString.IsStringType(jobj) || jojb_type == "<class 'datetime.date'>")
{
// var pobj = new PyString(jobj);
writer.WriteValue(jobj.ToString());
}
else if (jobj.IsIterable())// && !PyDict.IsDictType(jobj))
{
writer.WriteStartArray();
foreach (var element in jobj)
{
serializer.Serialize(writer, element, null);
}
writer.WriteEndArray();
}
else
{
var properties = jobj.Dir();
if (properties != null)
{
writer.WriteStartObject();
foreach (PyObject property in properties)
{
string name = property.ToString();
if (!property.IsCallable() && !name.StartsWith("__"))
{
var attr = jobj.GetAttr(property);//.ToString();
writer.WritePropertyName(name);
try
{
serializer.Serialize(writer, attr, null);
}
catch
{
writer.WriteNull();
}
}
}
writer.WriteEndObject();
}
}
}
/// <summary>
/// Initialize Method
/// </summary>
/// <remarks>
/// Initialize the Python runtime. It is safe to call this method
/// more than once, though initialization will only happen on the
/// first call. It is *not* necessary to hold the Python global
/// interpreter lock (GIL) to call this method.
/// initSigs can be set to 1 to do default python signal configuration. This will override the way signals are handled by the application.
/// </remarks>
public static void Initialize(IEnumerable <string> args, bool setSysArgv = true, bool initSigs = false)
{
if (!initialized)
{
// Creating the delegateManager MUST happen before Runtime.Initialize
// is called. If it happens afterwards, DelegateManager's CodeGenerator
// throws an exception in its ctor. This exception is eaten somehow
// during an initial "import clr", and the world ends shortly thereafter.
// This is probably masking some bad mojo happening somewhere in Runtime.Initialize().
delegateManager = new DelegateManager();
Runtime.Initialize(initSigs);
initialized = true;
Exceptions.Clear();
// Make sure we clean up properly on app domain unload.
AppDomain.CurrentDomain.DomainUnload += OnDomainUnload;
// Remember to shut down the runtime.
AddShutdownHandler(Runtime.Shutdown);
// The global scope gets used implicitly quite early on, remember
// to clear it out when we shut down.
AddShutdownHandler(PyScopeManager.Global.Clear);
if (setSysArgv)
{
Py.SetArgv(args);
}
// register the atexit callback (this doesn't use Py_AtExit as the C atexit
// callbacks are called after python is fully finalized but the python ones
// are called while the python engine is still running).
string code =
"import atexit, clr\n" +
"atexit.register(clr._AtExit)\n";
PythonEngine.Exec(code);
// Load the clr.py resource into the clr module
IntPtr clr = Python.Runtime.ImportHook.GetCLRModule();
IntPtr clr_dict = Runtime.PyModule_GetDict(clr);
var locals = new PyDict();
try
{
IntPtr module = Runtime.PyImport_AddModule("clr._extras");
IntPtr module_globals = Runtime.PyModule_GetDict(module);
IntPtr builtins = Runtime.PyEval_GetBuiltins();
Runtime.PyDict_SetItemString(module_globals, "__builtins__", builtins);
Assembly assembly = Assembly.GetExecutingAssembly();
using (Stream stream = assembly.GetManifestResourceStream("clr.py"))
using (var reader = new StreamReader(stream))
{
// add the contents of clr.py to the module
string clr_py = reader.ReadToEnd();
Exec(clr_py, module_globals, locals.Handle);
}
// add the imported module to the clr module, and copy the API functions
// and decorators into the main clr module.
Runtime.PyDict_SetItemString(clr_dict, "_extras", module);
foreach (PyObject key in locals.Keys())
{
if (!key.ToString().StartsWith("_") || key.ToString().Equals("__version__"))
{
PyObject value = locals[key];
Runtime.PyDict_SetItem(clr_dict, key.Handle, value.Handle);
value.Dispose();
}
key.Dispose();
}
}
finally
{
locals.Dispose();
}
}
}
/// <summary>
/// Initialize Method
/// </summary>
///
/// <remarks>
/// Initialize the Python runtime. It is safe to call this method
/// more than once, though initialization will only happen on the
/// first call. It is *not* necessary to hold the Python global
/// interpreter lock (GIL) to call this method.
/// </remarks>
public static void Initialize()
{
if (!initialized)
{
// Creating the delegateManager MUST happen before Runtime.Initialize
// is called. If it happens afterwards, DelegateManager's CodeGenerator
// throws an exception in its ctor. This exception is eaten somehow
// during an initial "import clr", and the world ends shortly thereafter.
// This is probably masking some bad mojo happening somewhere in Runtime.Initialize().
delegateManager = new DelegateManager();
Runtime.Initialize();
initialized = true;
Exceptions.Clear();
// register the atexit callback (this doesn't use Py_AtExit as the C atexit
// callbacks are called after python is fully finalized but the python ones
// are called while the python engine is still running).
string code =
"import atexit, clr\n" +
"atexit.register(clr._AtExit)\n";
PyObject r = PythonEngine.RunString(code);
if (r != null)
{
r.Dispose();
}
// Load the clr.py resource into the clr module
IntPtr clr = Python.Runtime.ImportHook.GetCLRModule();
IntPtr clr_dict = Runtime.PyModule_GetDict(clr);
PyDict locals = new PyDict();
try
{
IntPtr module = Runtime.PyImport_AddModule("clr._extras");
IntPtr module_globals = Runtime.PyModule_GetDict(module);
IntPtr builtins = Runtime.PyEval_GetBuiltins();
Runtime.PyDict_SetItemString(module_globals, "__builtins__", builtins);
var assembly = Assembly.GetExecutingAssembly();
using (Stream stream = assembly.GetManifestResourceStream("clr.py"))
using (StreamReader reader = new StreamReader(stream))
{
// add the contents of clr.py to the module
string clr_py = reader.ReadToEnd();
PyObject result = RunString(clr_py, module_globals, locals.Handle);
if (null == result)
{
throw new PythonException();
}
result.Dispose();
}
// add the imported module to the clr module, and copy the API functions
// and decorators into the main clr module.
Runtime.PyDict_SetItemString(clr_dict, "_extras", module);
foreach (PyObject key in locals.Keys())
{
if (!key.ToString().StartsWith("_"))
{
PyObject value = locals[key];
Runtime.PyDict_SetItem(clr_dict, key.Handle, value.Handle);
value.Dispose();
}
key.Dispose();
}
}
finally
{
locals.Dispose();
}
}
}
/// <summary>
/// Initialize Method
/// </summary>
///
/// <remarks>
/// Initialize the Python runtime. It is safe to call this method
/// more than once, though initialization will only happen on the
/// first call. It is *not* necessary to hold the Python global
/// interpreter lock (GIL) to call this method.
/// </remarks>
public static void Initialize()
{
if (!initialized)
{
// Creating the delegateManager MUST happen before Runtime.Initialize
// is called. If it happens afterwards, DelegateManager's CodeGenerator
// throws an exception in its ctor. This exception is eaten somehow
// during an initial "import clr", and the world ends shortly thereafter.
// This is probably masking some bad mojo happening somewhere in Runtime.Initialize().
delegateManager = new DelegateManager();
Runtime.Initialize();
initialized = true;
Exceptions.Clear();
// register the atexit callback (this doesn't use Py_AtExit as the C atexit
// callbacks are called after python is fully finalized but the python ones
// are called while the python engine is still running).
string code =
"import atexit, clr\n" +
"atexit.register(clr._AtExit)\n";
PyObject r = PythonEngine.RunString(code);
if (r != null)
r.Dispose();
// Load the clr.py resource into the clr module
IntPtr clr = Python.Runtime.ImportHook.GetCLRModule();
IntPtr clr_dict = Runtime.PyModule_GetDict(clr);
PyDict locals = new PyDict();
try
{
IntPtr module = Runtime.PyImport_AddModule("clr._extras");
IntPtr module_globals = Runtime.PyModule_GetDict(module);
IntPtr builtins = Runtime.PyEval_GetBuiltins();
Runtime.PyDict_SetItemString(module_globals, "__builtins__", builtins);
var assembly = Assembly.GetExecutingAssembly();
using (Stream stream = assembly.GetManifestResourceStream("clr.py"))
using (StreamReader reader = new StreamReader(stream))
{
// add the contents of clr.py to the module
string clr_py = reader.ReadToEnd();
PyObject result = RunString(clr_py, module_globals, locals.Handle);
if (null == result)
throw new PythonException();
result.Dispose();
}
// add the imported module to the clr module, and copy the API functions
// and decorators into the main clr module.
Runtime.PyDict_SetItemString(clr_dict, "_extras", module);
foreach (PyObject key in locals.Keys())
{
if (!key.ToString().StartsWith("_") || key.ToString().Equals("__version__"))
{
PyObject value = locals[key];
Runtime.PyDict_SetItem(clr_dict, key.Handle, value.Handle);
value.Dispose();
}
key.Dispose();
}
}
finally
{
locals.Dispose();
}
}
}