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interop.cs
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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
.
Method
|
AttributeTargets
.
Delegate
)
]
internal
class
CallConvCdeclAttribute
:
Attribute
{
public
CallConvCdeclAttribute
(
)
{
}
}
[
Serializable
(
)
]
[
AttributeUsage
(
AttributeTargets
.
Method
|
AttributeTargets
.
Delegate
)
]
internal
class
PythonMethodAttribute
:
Attribute
{
public
PythonMethodAttribute
(
)
{
}
}
[
StructLayout
(
LayoutKind
.
Sequential
,
CharSet
=
CharSet
.
Ansi
)
]
internal
class
ObjectOffset
{
static
ObjectOffset
(
)
{
int
size
=
IntPtr
.
Size
;
ob_refcnt
=
0
;
ob_type
=
1
*
size
;
ob_dict
=
2
*
size
;
ob_data
=
3
*
size
;
}
public
static
int
magic
(
)
{
return
ob_data
;
}
public
static
int
Size
(
)
{
return
4
*
IntPtr
.
Size
;
}
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
;
}
public
static
int
ob_refcnt
=
0
;
public
static
int
ob_type
=
0
;
public
static
int
ob_size
=
0
;
public
static
int
tp_name
=
0
;
public
static
int
tp_basicsize
=
0
;
public
static
int
tp_itemsize
=
0
;
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
;
public
static
int
tp_as_number
=
0
;
public
static
int
tp_as_sequence
=
0
;
public
static
int
tp_as_mapping
=
0
;
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
;
public
static
int
tp_as_buffer
=
0
;
public
static
int
tp_flags
=
0
;
public
static
int
tp_doc
=
0
;
public
static
int
tp_traverse
=
0
;
public
static
int
tp_clear
=
0
;
public
static
int
tp_richcompare
=
0
;
public
static
int
tp_weaklistoffset
=
0
;
public
static
int
tp_iter
=
0
;
public
static
int
tp_iternext
=
0
;
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
;
public
static
int
tp_is_gc
=
0
;
public
static
int
tp_bases
=
0
;
public
static
int
tp_mro
=
0
;
public
static
int
tp_cache
=
0
;
public
static
int
tp_subclasses
=
0
;
public
static
int
tp_weaklist
=
0
;
public
static
int
tp_del
=
0
;
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
;
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
;
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
;
public
static
int
mp_length
=
0
;
public
static
int
mp_subscript
=
0
;
public
static
int
mp_ass_subscript
=
0
;
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
;
public
static
int
sq_inplace_concat
=
0
;
public
static
int
sq_inplace_repeat
=
0
;
public
static
int
bf_getreadbuffer
=
0
;
public
static
int
bf_getwritebuffer
=
0
;
public
static
int
bf_getsegcount
=
0
;
public
static
int
bf_getcharbuffer
=
0
;
public
static
int
name
=
0
;
public
static
int
slots
=
0
;
public
static
int
members
=
0
;
}
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
)
;
public
static
int
Managed
=
(
1
<<
29
)
;
public
static
int
Subclass
=
(
1
<<
30
)
;
public
static
int
Default
=
(
1
<<
0
)
|
(
1
<<
1
)
|
(
1
<<
3
)
|
(
1
<<
5
)
|
(
1
<<
6
)
|
(
1
<<
7
)
|
(
1
<<
8
)
|
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
IntPtr
temp
;
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
(
)
;
temp
=
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"
]
;
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
;
}
[
CallConvCdecl
(
)
]
public
delegate
IntPtr
UnaryFunc
(
IntPtr
ob
)
;
[
CallConvCdecl
(
)
]
public
delegate
IntPtr
BinaryFunc
(
IntPtr
ob
,
IntPtr
arg
)
;
[
CallConvCdecl
(
)
]
public
delegate
IntPtr
TernaryFunc
(
IntPtr
ob
,
IntPtr
a1
,
IntPtr
a2
)
;
[
CallConvCdecl
(
)
]
public
delegate
int
InquiryFunc
(
IntPtr
ob
)
;
[
CallConvCdecl
(
)
]
public
delegate
IntPtr
IntArgFunc
(
IntPtr
ob
,
int
arg
)
;
[
CallConvCdecl
(
)
]
public
delegate
IntPtr
IntIntArgFunc
(
IntPtr
ob
,
int
a1
,
int
a2
)
;
[
CallConvCdecl
(
)
]
public
delegate
int
IntObjArgFunc
(
IntPtr
ob
,
int
a1
,
IntPtr
a2
)
;
[
CallConvCdecl
(
)
]
public
delegate
int
IntIntObjArgFunc
(
IntPtr
o
,
int
a
,
int
b
,
IntPtr
c
)
;
[
CallConvCdecl
(
)
]
public
delegate
int
ObjObjArgFunc
(
IntPtr
o
,
IntPtr
a
,
IntPtr
b
)
;
[
CallConvCdecl
(
)
]
public
delegate
int
ObjObjFunc
(
IntPtr
ob
,
IntPtr
arg
)
;
[
CallConvCdecl
(
)
]
public
delegate
void
DestructorFunc
(
IntPtr
ob
)
;
[
CallConvCdecl
(
)
]
public
delegate
int
PrintFunc
(
IntPtr
ob
,
IntPtr
a
,
int
b
)
;
[
CallConvCdecl
(
)
]
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
;
}
}
}
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