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// ==========================================================================
// This software is subject to the provisions of the Zope Public License,
// Version 2.0 (ZPL). A copy of the ZPL should accompany this distribution.
// THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
// WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
// FOR A PARTICULAR PURPOSE.
// ==========================================================================
using System;
using System.Collections;
using System.Collections.Specialized;
using System.Runtime.InteropServices;
using System.Reflection;
namespace Python.Runtime {
//=======================================================================
// This file defines objects to support binary interop with the Python
// runtime. Generally, the definitions here need to be kept up to date
// when moving to new Python versions.
//=======================================================================
[Serializable()]
[AttributeUsage(AttributeTargets.All)]
public class DocStringAttribute : Attribute {
public DocStringAttribute(string docStr) {
DocString = docStr;
}
public string DocString {
get { return docStr; }
set { docStr = value; }
}
private string docStr;
}
[Serializable()]
[AttributeUsage(AttributeTargets.Method | AttributeTargets.Delegate)]
internal class PythonMethodAttribute : Attribute {
public PythonMethodAttribute() {}
}
[Serializable()]
[AttributeUsage(AttributeTargets.Method | AttributeTargets.Delegate)]
internal class ModuleFunctionAttribute : Attribute {
public ModuleFunctionAttribute() {}
}
[Serializable()]
[AttributeUsage(AttributeTargets.Method | AttributeTargets.Delegate)]
internal class ForbidPythonThreadsAttribute : Attribute {
public ForbidPythonThreadsAttribute() { }
}
[Serializable()]
[AttributeUsage(AttributeTargets.Property)]
internal class ModulePropertyAttribute : Attribute {
public ModulePropertyAttribute() {}
}
[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Ansi)]
internal class ObjectOffset {
static ObjectOffset() {
int size = IntPtr.Size;
int n = 0; // Py_TRACE_REFS add two pointers to PyObject_HEAD
#if (Py_DEBUG)
_ob_next = 0;
_ob_prev = 1 * size;
n = 2;
#endif
ob_refcnt = (n+0) * size;
ob_type = (n+1) * size;
ob_dict = (n+2) * size;
ob_data = (n+3) * size;
}
public static int magic() {
return ob_data;
}
public static int Size() {
#if (Py_DEBUG)
return 6 * IntPtr.Size;
#else
return 4 * IntPtr.Size;
#endif
}
#if (Py_DEBUG)
public static int _ob_next;
public static int _ob_prev;
#endif
public static int ob_refcnt;
public static int ob_type;
public static int ob_dict;
public static int ob_data;
}
[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Ansi)]
internal class TypeOffset {
static TypeOffset() {
Type type = typeof(TypeOffset);
FieldInfo[] fi = type.GetFields();
int size = IntPtr.Size;
for (int i = 0; i < fi.Length; i++) {
fi[i].SetValue(null, i * size);
}
}
public static int magic() {
return ob_size;
}
/* The *real* layout of a type object when allocated on the heap */
//typedef struct _heaptypeobject {
#if (Py_DEBUG) // #ifdef Py_TRACE_REFS
/* _PyObject_HEAD_EXTRA defines pointers to support a doubly-linked list of all live heap objects. */
public static int _ob_next = 0;
public static int _ob_prev = 0;
#endif
// PyObject_VAR_HEAD {
// PyObject_HEAD {
public static int ob_refcnt = 0;
public static int ob_type = 0;
// }
public static int ob_size = 0; /* Number of items in _VAR_iable part */
// }
public static int tp_name = 0; /* For printing, in format "<module>.<name>" */
public static int tp_basicsize = 0; /* For allocation */
public static int tp_itemsize = 0;
/* Methods to implement standard operations */
public static int tp_dealloc = 0;
public static int tp_print = 0;
public static int tp_getattr = 0;
public static int tp_setattr = 0;
public static int tp_compare = 0;
public static int tp_repr = 0;
/* Method suites for standard classes */
public static int tp_as_number = 0;
public static int tp_as_sequence = 0;
public static int tp_as_mapping = 0;
/* More standard operations (here for binary compatibility) */
public static int tp_hash = 0;
public static int tp_call = 0;
public static int tp_str = 0;
public static int tp_getattro = 0;
public static int tp_setattro = 0;
/* Functions to access object as input/output buffer */
public static int tp_as_buffer = 0;
/* Flags to define presence of optional/expanded features */
public static int tp_flags = 0;
public static int tp_doc = 0; /* Documentation string */
/* Assigned meaning in release 2.0 */
/* call function for all accessible objects */
public static int tp_traverse = 0;
/* delete references to contained objects */
public static int tp_clear = 0;
/* Assigned meaning in release 2.1 */
/* rich comparisons */
public static int tp_richcompare = 0;
/* weak reference enabler */
public static int tp_weaklistoffset = 0;
/* Added in release 2.2 */
/* Iterators */
public static int tp_iter = 0;
public static int tp_iternext = 0;
/* Attribute descriptor and subclassing stuff */
public static int tp_methods = 0;
public static int tp_members = 0;
public static int tp_getset = 0;
public static int tp_base = 0;
public static int tp_dict = 0;
public static int tp_descr_get = 0;
public static int tp_descr_set = 0;
public static int tp_dictoffset = 0;
public static int tp_init = 0;
public static int tp_alloc = 0;
public static int tp_new = 0;
public static int tp_free = 0; /* Low-level free-memory routine */
public static int tp_is_gc = 0; /* For PyObject_IS_GC */
public static int tp_bases = 0;
public static int tp_mro = 0; /* method resolution order */
public static int tp_cache = 0;
public static int tp_subclasses = 0;
public static int tp_weaklist = 0;
public static int tp_del = 0;
#if (PYTHON26 || PYTHON27)
/* Type attribute cache version tag. Added in version 2.6 */
public static int tp_version_tag;
#endif
// COUNT_ALLOCS adds some more stuff to PyTypeObject
#if (Py_COUNT_ALLOCS)
/* these must be last and never explicitly initialized */
public static int tp_allocs = 0;
public static int tp_frees = 0;
public static int tp_maxalloc = 0;
public static int tp_prev = 0;
public static int tp_next = 0;
#endif
//} PyTypeObject;
//typedef struct {
public static int nb_add = 0;
public static int nb_subtract = 0;
public static int nb_multiply = 0;
public static int nb_divide = 0;
public static int nb_remainder = 0;
public static int nb_divmod = 0;
public static int nb_power = 0;
public static int nb_negative = 0;
public static int nb_positive = 0;
public static int nb_absolute = 0;
public static int nb_nonzero = 0;
public static int nb_invert = 0;
public static int nb_lshift = 0;
public static int nb_rshift = 0;
public static int nb_and = 0;
public static int nb_xor = 0;
public static int nb_or = 0;
public static int nb_coerce = 0;
public static int nb_int = 0;
public static int nb_long = 0;
public static int nb_float = 0;
public static int nb_oct = 0;
public static int nb_hex = 0;
/* Added in release 2.0 */
public static int nb_inplace_add = 0;
public static int nb_inplace_subtract = 0;
public static int nb_inplace_multiply = 0;
public static int nb_inplace_divide = 0;
public static int nb_inplace_remainder = 0;
public static int nb_inplace_power = 0;
public static int nb_inplace_lshift = 0;
public static int nb_inplace_rshift = 0;
public static int nb_inplace_and = 0;
public static int nb_inplace_xor = 0;
public static int nb_inplace_or = 0;
/* Added in release 2.2 */
/* The following require the Py_TPFLAGS_HAVE_CLASS flag */
public static int nb_floor_divide = 0;
public static int nb_true_divide = 0;
public static int nb_inplace_floor_divide = 0;
public static int nb_inplace_true_divide = 0;
#if (PYTHON25 || PYTHON26 || PYTHON27)
/* Added in release 2.5 */
public static int nb_index = 0;
#endif
//} PyNumberMethods;
//typedef struct {
public static int mp_length = 0;
public static int mp_subscript = 0;
public static int mp_ass_subscript = 0;
//} PyMappingMethods;
//typedef struct {
public static int sq_length = 0;
public static int sq_concat = 0;
public static int sq_repeat = 0;
public static int sq_item = 0;
public static int sq_slice = 0;
public static int sq_ass_item = 0;
public static int sq_ass_slice = 0;
public static int sq_contains = 0;
/* Added in release 2.0 */
public static int sq_inplace_concat = 0;
public static int sq_inplace_repeat = 0;
//} PySequenceMethods;
//typedef struct {
public static int bf_getreadbuffer = 0;
public static int bf_getwritebuffer = 0;
public static int bf_getsegcount = 0;
public static int bf_getcharbuffer = 0;
#if (PYTHON26 || PYTHON27)
// This addition is not actually noted in the 2.6.5 object.h
public static int bf_getbuffer = 0;
public static int bf_releasebuffer = 0;
//} PyBufferProcs;
#endif
//PyObject *ht_name, *ht_slots;
public static int name = 0;
public static int slots = 0;
/* here are optional user slots, followed by the members. */
public static int members = 0;
}
/// <summary>
/// TypeFlags(): The actual bit values for the Type Flags stored
/// in a class.
/// Note that the two values reserved for stackless have been put
/// to good use as PythonNet specific flags (Managed and Subclass)
/// </summary>
internal class TypeFlags {
public static int HaveGetCharBuffer = (1 << 0);
public static int HaveSequenceIn = (1 << 1);
public static int GC = 0;
public static int HaveInPlaceOps = (1 << 3);
public static int CheckTypes = (1 << 4);
public static int HaveRichCompare = (1 << 5);
public static int HaveWeakRefs = (1 << 6);
public static int HaveIter = (1 << 7);
public static int HaveClass = (1 << 8);
public static int HeapType = (1 << 9);
public static int BaseType = (1 << 10);
public static int Ready = (1 << 12);
public static int Readying = (1 << 13);
public static int HaveGC = (1 << 14);
// 15 and 16 are reserved for stackless
public static int HaveStacklessExtension = 0;
/* XXX Reusing reserved constants */
public static int Managed = (1 << 15); // PythonNet specific
public static int Subclass = (1 << 16); // PythonNet specific
#if (PYTHON25 || PYTHON26 || PYTHON27)
public static int HaveIndex = (1 << 17);
#endif
#if (PYTHON26 || PYTHON27)
/* Objects support nb_index in PyNumberMethods */
public static int HaveVersionTag = (1 << 18);
public static int ValidVersionTag = (1 << 19);
public static int IsAbstract = (1 << 20);
public static int HaveNewBuffer = (1 << 21);
// TODO: Implement FastSubclass functions
public static int IntSubclass = (1 << 23);
public static int LongSubclass = (1 << 24);
public static int ListSubclass = (1 << 25);
public static int TupleSubclass = (1 << 26);
public static int StringSubclass = (1 << 27);
public static int UnicodeSubclass = (1 << 28);
public static int DictSubclass = (1 << 29);
public static int BaseExceptionSubclass = (1 << 30);
public static int TypeSubclass = (1 << 31);
#endif
public static int Default = (HaveGetCharBuffer |
HaveSequenceIn |
HaveInPlaceOps |
HaveRichCompare |
HaveWeakRefs |
HaveIter |
HaveClass |
HaveStacklessExtension |
#if (PYTHON25 || PYTHON26 || PYTHON27)
HaveIndex |
#endif
0);
}
// This class defines the function prototypes (delegates) used for low
// level integration with the CPython runtime. It also provides name
// based lookup of the correct prototype for a particular Python type
// slot and utilities for generating method thunks for managed methods.
internal class Interop {
static ArrayList keepAlive;
static Hashtable pmap;
static Interop() {
// Here we build a mapping of PyTypeObject slot names to the
// appropriate prototype (delegate) type to use for the slot.
Type[] items = typeof(Interop).GetNestedTypes();
Hashtable p = new Hashtable();
for (int i = 0; i < items.Length; i++) {
Type item = items[i];
p[item.Name] = item;
}
keepAlive = new ArrayList();
Marshal.AllocHGlobal(IntPtr.Size);
pmap = new Hashtable();
pmap["tp_dealloc"] = p["DestructorFunc"];
pmap["tp_print"] = p["PrintFunc"];
pmap["tp_getattr"] = p["BinaryFunc"];
pmap["tp_setattr"] = p["ObjObjArgFunc"];
pmap["tp_compare"] = p["ObjObjFunc"];
pmap["tp_repr"] = p["UnaryFunc"];
pmap["tp_hash"] = p["UnaryFunc"];
pmap["tp_call"] = p["TernaryFunc"];
pmap["tp_str"] = p["UnaryFunc"];
pmap["tp_getattro"] = p["BinaryFunc"];
pmap["tp_setattro"] = p["ObjObjArgFunc"];
pmap["tp_traverse"] = p["ObjObjArgFunc"];
pmap["tp_clear"] = p["InquiryFunc"];
pmap["tp_richcompare"] = p["RichCmpFunc"];
pmap["tp_iter"] = p["UnaryFunc"];
pmap["tp_iternext"] = p["UnaryFunc"];
pmap["tp_descr_get"] = p["TernaryFunc"];
pmap["tp_descr_set"] = p["ObjObjArgFunc"];
pmap["tp_init"] = p["ObjObjArgFunc"];
pmap["tp_alloc"] = p["IntArgFunc"];
pmap["tp_new"] = p["TernaryFunc"];
pmap["tp_free"] = p["DestructorFunc"];
pmap["tp_is_gc"] = p["InquiryFunc"];
pmap["nb_add"] = p["BinaryFunc"];
pmap["nb_subtract"] = p["BinaryFunc"];
pmap["nb_multiply"] = p["BinaryFunc"];
pmap["nb_divide"] = p["BinaryFunc"];
pmap["nb_remainder"] = p["BinaryFunc"];
pmap["nb_divmod"] = p["BinaryFunc"];
pmap["nb_power"] = p["TernaryFunc"];
pmap["nb_negative"] = p["UnaryFunc"];
pmap["nb_positive"] = p["UnaryFunc"];
pmap["nb_absolute"] = p["UnaryFunc"];
pmap["nb_nonzero"] = p["InquiryFunc"];
pmap["nb_invert"] = p["UnaryFunc"];
pmap["nb_lshift"] = p["BinaryFunc"];
pmap["nb_rshift"] = p["BinaryFunc"];
pmap["nb_and"] = p["BinaryFunc"];
pmap["nb_xor"] = p["BinaryFunc"];
pmap["nb_or"] = p["BinaryFunc"];
pmap["nb_coerce"] = p["ObjObjFunc"];
pmap["nb_int"] = p["UnaryFunc"];
pmap["nb_long"] = p["UnaryFunc"];
pmap["nb_float"] = p["UnaryFunc"];
pmap["nb_oct"] = p["UnaryFunc"];
pmap["nb_hex"] = p["UnaryFunc"];
pmap["nb_inplace_add"] = p["BinaryFunc"];
pmap["nb_inplace_subtract"] = p["BinaryFunc"];
pmap["nb_inplace_multiply"] = p["BinaryFunc"];
pmap["nb_inplace_divide"] = p["BinaryFunc"];
pmap["nb_inplace_remainder"] = p["BinaryFunc"];
pmap["nb_inplace_power"] = p["TernaryFunc"];
pmap["nb_inplace_lshift"] = p["BinaryFunc"];
pmap["nb_inplace_rshift"] = p["BinaryFunc"];
pmap["nb_inplace_and"] = p["BinaryFunc"];
pmap["nb_inplace_xor"] = p["BinaryFunc"];
pmap["nb_inplace_or"] = p["BinaryFunc"];
pmap["nb_floor_divide"] = p["BinaryFunc"];
pmap["nb_true_divide"] = p["BinaryFunc"];
pmap["nb_inplace_floor_divide"] = p["BinaryFunc"];
pmap["nb_inplace_true_divide"] = p["BinaryFunc"];
#if (PYTHON25 || PYTHON26 || PYTHON27)
pmap["nb_index"] = p["UnaryFunc"];
#endif
pmap["sq_length"] = p["InquiryFunc"];
pmap["sq_concat"] = p["BinaryFunc"];
pmap["sq_repeat"] = p["IntArgFunc"];
pmap["sq_item"] = p["IntArgFunc"];
pmap["sq_slice"] = p["IntIntArgFunc"];
pmap["sq_ass_item"] = p["IntObjArgFunc"];
pmap["sq_ass_slice"] = p["IntIntObjArgFunc"];
pmap["sq_contains"] = p["ObjObjFunc"];
pmap["sq_inplace_concat"] = p["BinaryFunc"];
pmap["sq_inplace_repeat"] = p["IntArgFunc"];
pmap["mp_length"] = p["InquiryFunc"];
pmap["mp_subscript"] = p["BinaryFunc"];
pmap["mp_ass_subscript"] = p["ObjObjArgFunc"];
pmap["bf_getreadbuffer"] = p["IntObjArgFunc"];
pmap["bf_getwritebuffer"] = p["IntObjArgFunc"];
pmap["bf_getsegcount"] = p["ObjObjFunc"];
pmap["bf_getcharbuffer"] = p["IntObjArgFunc"];
pmap["__import__"] = p["TernaryFunc"];
}
internal static Type GetPrototype(string name) {
return pmap[name] as Type;
}
internal static IntPtr GetThunk(MethodInfo method) {
Type dt = Interop.GetPrototype(method.Name);
if (dt != null) {
IntPtr tmp = Marshal.AllocHGlobal(IntPtr.Size);
Delegate d = Delegate.CreateDelegate(dt, method);
Thunk cb = new Thunk(d);
Marshal.StructureToPtr(cb, tmp, false);
IntPtr fp = Marshal.ReadIntPtr(tmp, 0);
Marshal.FreeHGlobal(tmp);
keepAlive.Add(d);
return fp;
}
return IntPtr.Zero;
}
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate IntPtr UnaryFunc(IntPtr ob);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate IntPtr BinaryFunc(IntPtr ob, IntPtr arg);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate IntPtr TernaryFunc(IntPtr ob, IntPtr a1, IntPtr a2);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate int InquiryFunc(IntPtr ob);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate IntPtr IntArgFunc(IntPtr ob, int arg);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate IntPtr IntIntArgFunc(IntPtr ob, int a1, int a2);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate int IntObjArgFunc(IntPtr ob, int a1, IntPtr a2);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate int IntIntObjArgFunc(IntPtr o, int a, int b, IntPtr c);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate int ObjObjArgFunc(IntPtr o, IntPtr a, IntPtr b);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate int ObjObjFunc(IntPtr ob, IntPtr arg);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate void DestructorFunc(IntPtr ob);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate int PrintFunc(IntPtr ob, IntPtr a, int b);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate IntPtr RichCmpFunc(IntPtr ob, IntPtr a, int b);
}
[StructLayout(LayoutKind.Sequential, CharSet=CharSet.Ansi)]
internal struct Thunk {
public Delegate fn;
public Thunk(Delegate d) {
fn = d;
}
}
}