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1661 lines (1288 loc) · 65.7 KB
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using System;
using System.Runtime.InteropServices;
using System.Security;
using System.Text;
namespace Python.Runtime
{
[SuppressUnmanagedCodeSecurity]
internal static class NativeMethods
{
#if MONO_LINUX || MONO_OSX
#if NETSTANDARD
private static int RTLD_NOW = 0x2;
#if MONO_LINUX
private static int RTLD_GLOBAL = 0x100;
private static IntPtr RTLD_DEFAULT = IntPtr.Zero;
private const string NativeDll = "libdl.so";
public static IntPtr LoadLibrary(string fileName)
{
return dlopen($"lib{fileName}.so", RTLD_NOW | RTLD_GLOBAL);
}
#elif MONO_OSX
private static int RTLD_GLOBAL = 0x8;
private const string NativeDll = "/usr/lib/libSystem.dylib"
private static IntPtr RTLD_DEFAULT = new IntPtr(-2);
public static IntPtr LoadLibrary(string fileName)
{
return dlopen($"lib{fileName}.dylib", RTLD_NOW | RTLD_GLOBAL);
}
#endif
#else
private static int RTLD_NOW = 0x2;
private static int RTLD_SHARED = 0x20;
#if MONO_OSX
private static IntPtr RTLD_DEFAULT = new IntPtr(-2);
private const string NativeDll = "__Internal";
#elif MONO_LINUX
private static IntPtr RTLD_DEFAULT = IntPtr.Zero;
private const string NativeDll = "libdl.so";
#endif
public static IntPtr LoadLibrary(string fileName)
{
return dlopen(fileName, RTLD_NOW | RTLD_SHARED);
}
#endif
public static void FreeLibrary(IntPtr handle)
{
dlclose(handle);
}
public static IntPtr GetProcAddress(IntPtr dllHandle, string name)
{
// look in the exe if dllHandle is NULL
if (dllHandle == IntPtr.Zero)
{
dllHandle = RTLD_DEFAULT;
}
// clear previous errors if any
dlerror();
IntPtr res = dlsym(dllHandle, name);
IntPtr errPtr = dlerror();
if (errPtr != IntPtr.Zero)
{
throw new Exception("dlsym: " + Marshal.PtrToStringAnsi(errPtr));
}
return res;
}
[DllImport(NativeDll, CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)]
public static extern IntPtr dlopen(String fileName, int flags);
[DllImport(NativeDll, CallingConvention = CallingConvention.Cdecl, CharSet = CharSet.Ansi)]
private static extern IntPtr dlsym(IntPtr handle, String symbol);
[DllImport(NativeDll, CallingConvention = CallingConvention.Cdecl)]
private static extern int dlclose(IntPtr handle);
[DllImport(NativeDll, CallingConvention = CallingConvention.Cdecl)]
private static extern IntPtr dlerror();
#else // Windows
private const string NativeDll = "kernel32.dll";
[DllImport(NativeDll)]
public static extern IntPtr LoadLibrary(string dllToLoad);
[DllImport(NativeDll)]
public static extern IntPtr GetProcAddress(IntPtr hModule, string procedureName);
[DllImport(NativeDll)]
public static extern bool FreeLibrary(IntPtr hModule);
#endif
}
/// <summary>
/// Encapsulates the low-level Python C API. Note that it is
/// the responsibility of the caller to have acquired the GIL
/// before calling any of these methods.
/// </summary>
public class Runtime
{
// C# compiler copies constants to the assemblies that references this library.
// We needs to replace all public constants to static readonly fields to allow
// binary substitution of different Python.Runtime.dll builds in a target application.
public static int UCS => _UCS;
#if UCS4
internal const int _UCS = 4;
/// <summary>
/// EntryPoint to be used in DllImport to map to correct Unicode
/// methods prior to PEP393. Only used for PY27.
/// </summary>
private const string PyUnicodeEntryPoint = "PyUnicodeUCS4_";
#elif UCS2
internal const int _UCS = 2;
/// <summary>
/// EntryPoint to be used in DllImport to map to correct Unicode
/// methods prior to PEP393. Only used for PY27.
/// </summary>
private const string PyUnicodeEntryPoint = "PyUnicodeUCS2_";
#else
#error You must define either UCS2 or UCS4!
#endif
// C# compiler copies constants to the assemblies that references this library.
// We needs to replace all public constants to static readonly fields to allow
// binary substitution of different Python.Runtime.dll builds in a target application.
public static string pyversion => _pyversion;
public static string pyver => _pyver;
#if PYTHON27
internal const string _pyversion = "2.7";
internal const string _pyver = "27";
#elif PYTHON33
internal const string _pyversion = "3.3";
internal const string _pyver = "33";
#elif PYTHON34
internal const string _pyversion = "3.4";
internal const string _pyver = "34";
#elif PYTHON35
internal const string _pyversion = "3.5";
internal const string _pyver = "35";
#elif PYTHON36
internal const string _pyversion = "3.6";
internal const string _pyver = "36";
#elif PYTHON37 // TODO: Add `interop37.cs` after PY37 is released
internal const string _pyversion = "3.7";
internal const string _pyver = "37";
#else
#error You must define one of PYTHON33 to PYTHON37 or PYTHON27
#endif
#if MONO_LINUX || MONO_OSX // Linux/macOS use dotted version string
internal const string dllBase = "python" + _pyversion;
#else // Windows
internal const string dllBase = "python" + _pyver;
#endif
#if PYTHON_WITH_PYDEBUG
internal const string dllWithPyDebug = "d";
#else
internal const string dllWithPyDebug = "";
#endif
#if PYTHON_WITH_PYMALLOC
internal const string dllWithPyMalloc = "m";
#else
internal const string dllWithPyMalloc = "";
#endif
// C# compiler copies constants to the assemblies that references this library.
// We needs to replace all public constants to static readonly fields to allow
// binary substitution of different Python.Runtime.dll builds in a target application.
public static readonly string PythonDLL = _PythonDll;
#if PYTHON_WITHOUT_ENABLE_SHARED && !NETSTANDARD
internal const string _PythonDll = "__Internal";
#else
internal const string _PythonDll = dllBase + dllWithPyDebug + dllWithPyMalloc;
#endif
public static readonly int pyversionnumber = Convert.ToInt32(_pyver);
// set to true when python is finalizing
internal static object IsFinalizingLock = new object();
internal static bool IsFinalizing;
internal static bool Is32Bit = IntPtr.Size == 4;
// .NET core: System.Runtime.InteropServices.RuntimeInformation.IsOSPlatform(OSPlatform.Windows)
internal static bool IsWindows = Environment.OSVersion.Platform == PlatformID.Win32NT;
internal static bool IsPython2 = pyversionnumber < 30;
internal static bool IsPython3 = pyversionnumber >= 30;
/// <summary>
/// Encoding to use to convert Unicode to/from Managed to Native
/// </summary>
internal static readonly Encoding PyEncoding = _UCS == 2 ? Encoding.Unicode : Encoding.UTF32;
/// <summary>
/// Initialize the runtime...
/// </summary>
internal static void Initialize()
{
if (Py_IsInitialized() == 0)
{
Py_Initialize();
}
if (PyEval_ThreadsInitialized() == 0)
{
PyEval_InitThreads();
}
IntPtr op;
IntPtr dict;
if (IsPython3)
{
op = PyImport_ImportModule("builtins");
dict = PyObject_GetAttrString(op, "__dict__");
}
else // Python2
{
dict = PyImport_GetModuleDict();
op = PyDict_GetItemString(dict, "__builtin__");
}
PyNotImplemented = PyObject_GetAttrString(op, "NotImplemented");
PyBaseObjectType = PyObject_GetAttrString(op, "object");
PyModuleType = PyObject_Type(op);
PyNone = PyObject_GetAttrString(op, "None");
PyTrue = PyObject_GetAttrString(op, "True");
PyFalse = PyObject_GetAttrString(op, "False");
PyBoolType = PyObject_Type(PyTrue);
PyNoneType = PyObject_Type(PyNone);
PyTypeType = PyObject_Type(PyNoneType);
op = PyObject_GetAttrString(dict, "keys");
PyMethodType = PyObject_Type(op);
XDecref(op);
// For some arcane reason, builtins.__dict__.__setitem__ is *not*
// a wrapper_descriptor, even though dict.__setitem__ is.
//
// object.__init__ seems safe, though.
op = PyObject_GetAttrString(PyBaseObjectType, "__init__");
PyWrapperDescriptorType = PyObject_Type(op);
XDecref(op);
#if PYTHON3
XDecref(dict);
#endif
op = PyString_FromString("string");
PyStringType = PyObject_Type(op);
XDecref(op);
op = PyUnicode_FromString("unicode");
PyUnicodeType = PyObject_Type(op);
XDecref(op);
#if PYTHON3
op = PyBytes_FromString("bytes");
PyBytesType = PyObject_Type(op);
XDecref(op);
#endif
op = PyTuple_New(0);
PyTupleType = PyObject_Type(op);
XDecref(op);
op = PyList_New(0);
PyListType = PyObject_Type(op);
XDecref(op);
op = PyDict_New();
PyDictType = PyObject_Type(op);
XDecref(op);
op = PyInt_FromInt32(0);
PyIntType = PyObject_Type(op);
XDecref(op);
op = PyLong_FromLong(0);
PyLongType = PyObject_Type(op);
XDecref(op);
op = PyFloat_FromDouble(0);
PyFloatType = PyObject_Type(op);
XDecref(op);
#if PYTHON3
PyClassType = IntPtr.Zero;
PyInstanceType = IntPtr.Zero;
#elif PYTHON2
IntPtr s = PyString_FromString("_temp");
IntPtr d = PyDict_New();
IntPtr c = PyClass_New(IntPtr.Zero, d, s);
PyClassType = PyObject_Type(c);
IntPtr i = PyInstance_New(c, IntPtr.Zero, IntPtr.Zero);
PyInstanceType = PyObject_Type(i);
XDecref(s);
XDecref(i);
XDecref(c);
XDecref(d);
#endif
Error = new IntPtr(-1);
IntPtr dllLocal = IntPtr.Zero;
if (_PythonDll != "__Internal")
{
dllLocal = NativeMethods.LoadLibrary(_PythonDll);
}
_PyObject_NextNotImplemented = NativeMethods.GetProcAddress(dllLocal, "_PyObject_NextNotImplemented");
#if !(MONO_LINUX || MONO_OSX)
if (dllLocal != IntPtr.Zero)
{
NativeMethods.FreeLibrary(dllLocal);
}
#endif
// Initialize modules that depend on the runtime class.
AssemblyManager.Initialize();
PyCLRMetaType = MetaType.Initialize();
Exceptions.Initialize();
ImportHook.Initialize();
// Need to add the runtime directory to sys.path so that we
// can find built-in assemblies like System.Data, et. al.
string rtdir = RuntimeEnvironment.GetRuntimeDirectory();
IntPtr path = PySys_GetObject("path");
IntPtr item = PyString_FromString(rtdir);
PyList_Append(path, item);
XDecref(item);
AssemblyManager.UpdatePath();
}
internal static void Shutdown()
{
AssemblyManager.Shutdown();
Exceptions.Shutdown();
ImportHook.Shutdown();
Py_Finalize();
}
// called *without* the GIL acquired by clr._AtExit
internal static int AtExit()
{
lock (IsFinalizingLock)
{
IsFinalizing = true;
}
return 0;
}
internal static IntPtr Py_single_input = (IntPtr)256;
internal static IntPtr Py_file_input = (IntPtr)257;
internal static IntPtr Py_eval_input = (IntPtr)258;
internal static IntPtr PyBaseObjectType;
internal static IntPtr PyModuleType;
internal static IntPtr PyClassType;
internal static IntPtr PyInstanceType;
internal static IntPtr PyCLRMetaType;
internal static IntPtr PyMethodType;
internal static IntPtr PyWrapperDescriptorType;
internal static IntPtr PyUnicodeType;
internal static IntPtr PyStringType;
internal static IntPtr PyTupleType;
internal static IntPtr PyListType;
internal static IntPtr PyDictType;
internal static IntPtr PyIntType;
internal static IntPtr PyLongType;
internal static IntPtr PyFloatType;
internal static IntPtr PyBoolType;
internal static IntPtr PyNoneType;
internal static IntPtr PyTypeType;
#if PYTHON3
internal static IntPtr PyBytesType;
#endif
internal static IntPtr _PyObject_NextNotImplemented;
internal static IntPtr PyNotImplemented;
internal const int Py_LT = 0;
internal const int Py_LE = 1;
internal const int Py_EQ = 2;
internal const int Py_NE = 3;
internal const int Py_GT = 4;
internal const int Py_GE = 5;
internal static IntPtr PyTrue;
internal static IntPtr PyFalse;
internal static IntPtr PyNone;
internal static IntPtr Error;
/// <summary>
/// Check if any Python Exceptions occurred.
/// If any exist throw new PythonException.
/// </summary>
/// <remarks>
/// Can be used instead of `obj == IntPtr.Zero` for example.
/// </remarks>
internal static void CheckExceptionOccurred()
{
if (PyErr_Occurred() != 0)
{
throw new PythonException();
}
}
internal static IntPtr ExtendTuple(IntPtr t, params IntPtr[] args)
{
int size = PyTuple_Size(t);
int add = args.Length;
IntPtr item;
IntPtr items = PyTuple_New(size + add);
for (var i = 0; i < size; i++)
{
item = PyTuple_GetItem(t, i);
XIncref(item);
PyTuple_SetItem(items, i, item);
}
for (var n = 0; n < add; n++)
{
item = args[n];
XIncref(item);
PyTuple_SetItem(items, size + n, item);
}
return items;
}
internal static Type[] PythonArgsToTypeArray(IntPtr arg)
{
return PythonArgsToTypeArray(arg, false);
}
internal static Type[] PythonArgsToTypeArray(IntPtr arg, bool mangleObjects)
{
// Given a PyObject * that is either a single type object or a
// tuple of (managed or unmanaged) type objects, return a Type[]
// containing the CLR Type objects that map to those types.
IntPtr args = arg;
var free = false;
if (!PyTuple_Check(arg))
{
args = PyTuple_New(1);
XIncref(arg);
PyTuple_SetItem(args, 0, arg);
free = true;
}
int n = PyTuple_Size(args);
var types = new Type[n];
Type t = null;
for (var i = 0; i < n; i++)
{
IntPtr op = PyTuple_GetItem(args, i);
if (mangleObjects && (!PyType_Check(op)))
{
op = PyObject_TYPE(op);
}
ManagedType mt = ManagedType.GetManagedObject(op);
if (mt is ClassBase)
{
t = ((ClassBase)mt).type;
}
else if (mt is CLRObject)
{
object inst = ((CLRObject)mt).inst;
if (inst is Type)
{
t = inst as Type;
}
}
else
{
t = Converter.GetTypeByAlias(op);
}
if (t == null)
{
types = null;
break;
}
types[i] = t;
}
if (free)
{
XDecref(args);
}
return types;
}
/// <summary>
/// Managed exports of the Python C API. Where appropriate, we do
/// some optimization to avoid managed <--> unmanaged transitions
/// (mostly for heavily used methods).
/// </summary>
internal static unsafe void XIncref(IntPtr op)
{
#if PYTHON_WITH_PYDEBUG || NETSTANDARD
Py_IncRef(op);
return;
#else
var p = (void*)op;
if ((void*)0 != p)
{
if (Is32Bit)
{
(*(int*)p)++;
}
else
{
(*(long*)p)++;
}
}
#endif
}
internal static unsafe void XDecref(IntPtr op)
{
#if PYTHON_WITH_PYDEBUG || NETSTANDARD
Py_DecRef(op);
return;
#else
var p = (void*)op;
if ((void*)0 != p)
{
if (Is32Bit)
{
--(*(int*)p);
}
else
{
--(*(long*)p);
}
if ((*(int*)p) == 0)
{
// PyObject_HEAD: struct _typeobject *ob_type
void* t = Is32Bit
? (void*)(*((uint*)p + 1))
: (void*)(*((ulong*)p + 1));
// PyTypeObject: destructor tp_dealloc
void* f = Is32Bit
? (void*)(*((uint*)t + 6))
: (void*)(*((ulong*)t + 6));
if ((void*)0 == f)
{
return;
}
NativeCall.Impl.Void_Call_1(new IntPtr(f), op);
}
}
#endif
}
internal static unsafe long Refcount(IntPtr op)
{
var p = (void*)op;
if ((void*)0 == p)
{
return 0;
}
return Is32Bit ? (*(int*)p) : (*(long*)p);
}
/// <summary>
/// Export of Macro Py_XIncRef. Use XIncref instead.
/// Limit this function usage for Testing and Py_Debug builds
/// </summary>
/// <param name="ob">PyObject Ptr</param>
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern void Py_IncRef(IntPtr ob);
/// <summary>
/// Export of Macro Py_XDecRef. Use XDecref instead.
/// Limit this function usage for Testing and Py_Debug builds
/// </summary>
/// <param name="ob">PyObject Ptr</param>
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern void Py_DecRef(IntPtr ob);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern void Py_Initialize();
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern int Py_IsInitialized();
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern void Py_Finalize();
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr Py_NewInterpreter();
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern void Py_EndInterpreter(IntPtr threadState);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr PyThreadState_New(IntPtr istate);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr PyThreadState_Get();
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr PyThread_get_key_value(IntPtr key);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern int PyThread_get_thread_ident();
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern int PyThread_set_key_value(IntPtr key, IntPtr value);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr PyThreadState_Swap(IntPtr key);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr PyGILState_Ensure();
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern void PyGILState_Release(IntPtr gs);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr PyGILState_GetThisThreadState();
#if PYTHON3
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
public static extern int Py_Main(
int argc,
[MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(StrArrayMarshaler))] string[] argv
);
#elif PYTHON2
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
public static extern int Py_Main(int argc, string[] argv);
#endif
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern void PyEval_InitThreads();
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern int PyEval_ThreadsInitialized();
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern void PyEval_AcquireLock();
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern void PyEval_ReleaseLock();
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern void PyEval_AcquireThread(IntPtr tstate);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern void PyEval_ReleaseThread(IntPtr tstate);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr PyEval_SaveThread();
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern void PyEval_RestoreThread(IntPtr tstate);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr PyEval_GetBuiltins();
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr PyEval_GetGlobals();
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr PyEval_GetLocals();
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr Py_GetProgramName();
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern void Py_SetProgramName(IntPtr name);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr Py_GetPythonHome();
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern void Py_SetPythonHome(IntPtr home);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr Py_GetPath();
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern void Py_SetPath(IntPtr home);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr Py_GetVersion();
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr Py_GetPlatform();
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr Py_GetCopyright();
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr Py_GetCompiler();
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr Py_GetBuildInfo();
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern int PyRun_SimpleString(string code);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr PyRun_String(string code, IntPtr st, IntPtr globals, IntPtr locals);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr PyEval_EvalCode(IntPtr co, IntPtr globals, IntPtr locals);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr Py_CompileString(string code, string file, IntPtr tok);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr PyImport_ExecCodeModule(string name, IntPtr code);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr PyCFunction_NewEx(IntPtr ml, IntPtr self, IntPtr mod);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr PyCFunction_Call(IntPtr func, IntPtr args, IntPtr kw);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr PyClass_New(IntPtr bases, IntPtr dict, IntPtr name);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr PyInstance_New(IntPtr cls, IntPtr args, IntPtr kw);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr PyInstance_NewRaw(IntPtr cls, IntPtr dict);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr PyMethod_New(IntPtr func, IntPtr self, IntPtr cls);
//====================================================================
// Python abstract object API
//====================================================================
/// <summary>
/// A macro-like method to get the type of a Python object. This is
/// designed to be lean and mean in IL & avoid managed <-> unmanaged
/// transitions. Note that this does not incref the type object.
/// </summary>
internal static unsafe IntPtr PyObject_TYPE(IntPtr op)
{
var p = (void*)op;
if ((void*)0 == p)
{
return IntPtr.Zero;
}
#if PYTHON_WITH_PYDEBUG
var n = 3;
#else
var n = 1;
#endif
return Is32Bit
? new IntPtr((void*)(*((uint*)p + n)))
: new IntPtr((void*)(*((ulong*)p + n)));
}
/// <summary>
/// Managed version of the standard Python C API PyObject_Type call.
/// This version avoids a managed <-> unmanaged transition.
/// This one does incref the returned type object.
/// </summary>
internal static IntPtr PyObject_Type(IntPtr op)
{
IntPtr tp = PyObject_TYPE(op);
XIncref(tp);
return tp;
}
internal static string PyObject_GetTypeName(IntPtr op)
{
IntPtr pyType = Marshal.ReadIntPtr(op, ObjectOffset.ob_type);
IntPtr ppName = Marshal.ReadIntPtr(pyType, TypeOffset.tp_name);
return Marshal.PtrToStringAnsi(ppName);
}
/// <summary>
/// Test whether the Python object is an iterable.
/// </summary>
internal static bool PyObject_IsIterable(IntPtr pointer)
{
var ob_type = Marshal.ReadIntPtr(pointer, ObjectOffset.ob_type);
#if PYTHON2
long tp_flags = Util.ReadCLong(ob_type, TypeOffset.tp_flags);
if ((tp_flags & TypeFlags.HaveIter) == 0)
return false;
#endif
IntPtr tp_iter = Marshal.ReadIntPtr(ob_type, TypeOffset.tp_iter);
return tp_iter != IntPtr.Zero;
}
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern int PyObject_HasAttrString(IntPtr pointer, string name);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr PyObject_GetAttrString(IntPtr pointer, string name);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern int PyObject_SetAttrString(IntPtr pointer, string name, IntPtr value);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern int PyObject_HasAttr(IntPtr pointer, IntPtr name);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr PyObject_GetAttr(IntPtr pointer, IntPtr name);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern int PyObject_SetAttr(IntPtr pointer, IntPtr name, IntPtr value);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr PyObject_GetItem(IntPtr pointer, IntPtr key);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern int PyObject_SetItem(IntPtr pointer, IntPtr key, IntPtr value);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern int PyObject_DelItem(IntPtr pointer, IntPtr key);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr PyObject_GetIter(IntPtr op);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr PyObject_Call(IntPtr pointer, IntPtr args, IntPtr kw);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr PyObject_CallObject(IntPtr pointer, IntPtr args);
#if PYTHON3
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern int PyObject_RichCompareBool(IntPtr value1, IntPtr value2, int opid);
internal static int PyObject_Compare(IntPtr value1, IntPtr value2)
{
int res;
res = PyObject_RichCompareBool(value1, value2, Py_LT);
if (-1 == res)
return -1;
else if (1 == res)
return -1;
res = PyObject_RichCompareBool(value1, value2, Py_EQ);
if (-1 == res)
return -1;
else if (1 == res)
return 0;
res = PyObject_RichCompareBool(value1, value2, Py_GT);
if (-1 == res)
return -1;
else if (1 == res)
return 1;
Exceptions.SetError(Exceptions.SystemError, "Error comparing objects");
return -1;
}
#elif PYTHON2
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern int PyObject_Compare(IntPtr value1, IntPtr value2);
#endif
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern int PyObject_IsInstance(IntPtr ob, IntPtr type);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern int PyObject_IsSubclass(IntPtr ob, IntPtr type);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern int PyCallable_Check(IntPtr pointer);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern int PyObject_IsTrue(IntPtr pointer);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern int PyObject_Not(IntPtr pointer);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern int PyObject_Size(IntPtr pointer);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr PyObject_Hash(IntPtr op);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr PyObject_Repr(IntPtr pointer);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr PyObject_Str(IntPtr pointer);
#if PYTHON3
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl,
EntryPoint = "PyObject_Str")]
internal static extern IntPtr PyObject_Unicode(IntPtr pointer);
#elif PYTHON2
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr PyObject_Unicode(IntPtr pointer);
#endif
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr PyObject_Dir(IntPtr pointer);
//====================================================================
// Python number API
//====================================================================
#if PYTHON3
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl,
EntryPoint = "PyNumber_Long")]
internal static extern IntPtr PyNumber_Int(IntPtr ob);
#elif PYTHON2
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr PyNumber_Int(IntPtr ob);
#endif
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr PyNumber_Long(IntPtr ob);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr PyNumber_Float(IntPtr ob);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern bool PyNumber_Check(IntPtr ob);
internal static bool PyInt_Check(IntPtr ob)
{
return PyObject_TypeCheck(ob, PyIntType);
}
internal static bool PyBool_Check(IntPtr ob)
{
return PyObject_TypeCheck(ob, PyBoolType);
}
internal static IntPtr PyInt_FromInt32(int value)
{
var v = new IntPtr(value);
return PyInt_FromLong(v);
}
internal static IntPtr PyInt_FromInt64(long value)
{
var v = new IntPtr(value);
return PyInt_FromLong(v);
}
#if PYTHON3
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl,
EntryPoint = "PyLong_FromLong")]
private static extern IntPtr PyInt_FromLong(IntPtr value);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl,
EntryPoint = "PyLong_AsLong")]
internal static extern int PyInt_AsLong(IntPtr value);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl,
EntryPoint = "PyLong_FromString")]
internal static extern IntPtr PyInt_FromString(string value, IntPtr end, int radix);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl,
EntryPoint = "PyLong_GetMax")]
internal static extern int PyInt_GetMax();
#elif PYTHON2
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
private static extern IntPtr PyInt_FromLong(IntPtr value);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern int PyInt_AsLong(IntPtr value);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]
internal static extern IntPtr PyInt_FromString(string value, IntPtr end, int radix);
[DllImport(_PythonDll, CallingConvention = CallingConvention.Cdecl)]