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pythonnet/src/runtime/PythonTypes/PyList.cs at master · dakatk/pythonnet · GitHub
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PythonTypes
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PyList.cs
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pythonnet
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runtime
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PythonTypes
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PyList.cs
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using
System
;
using
System
.
Linq
;
using
System
.
Runtime
.
Serialization
;
namespace
Python
.
Runtime
{
/// <summary>
/// Represents a standard Python list object. See the documentation at
/// PY2: https://docs.python.org/2/c-api/list.html
/// PY3: https://docs.python.org/3/c-api/list.html
/// for details.
/// </summary>
[
Serializable
]
public
class
PyList
:
PySequence
{
internal
PyList
(
in
StolenReference
reference
)
:
base
(
reference
)
{
}
/// <summary>
/// Creates new <see cref="PyList"/> pointing to the same object, as the given reference.
/// </summary>
internal
PyList
(
BorrowedReference
reference
)
:
base
(
reference
)
{
}
protected
PyList
(
SerializationInfo
info
,
StreamingContext
context
)
:
base
(
info
,
context
)
{
}
private
static
BorrowedReference
FromObject
(
PyObject
o
)
{
if
(
o
==
null
||
!
IsListType
(
o
)
)
{
throw
new
ArgumentException
(
"object is not a list"
)
;
}
return
o
.
Reference
;
}
/// <summary>
/// PyList Constructor
/// </summary>
/// <remarks>
/// Copy constructor - obtain a PyList from a generic PyObject. An
/// ArgumentException will be thrown if the given object is not a
/// Python list object.
/// </remarks>
public
PyList
(
PyObject
o
)
:
base
(
FromObject
(
o
)
)
{
}
/// <summary>
/// Creates a new empty Python list object.
/// </summary>
public
PyList
(
)
:
base
(
Runtime
.
PyList_New
(
0
)
.
StealOrThrow
(
)
)
{
}
private
static
StolenReference
FromArray
(
PyObject
[
]
items
)
{
if
(
items
is
null
)
throw
new
ArgumentNullException
(
nameof
(
items
)
)
;
if
(
items
.
Any
(
item
=>
item
is
null
)
)
throw
new
ArgumentException
(
message
:
Util
.
UseNone
,
paramName
:
nameof
(
items
)
)
;
int
count
=
items
.
Length
;
using
var
val
=
Runtime
.
PyList_New
(
count
)
;
for
(
var
i
=
0
;
i
<
count
;
i
++
)
{
int
r
=
Runtime
.
PyList_SetItem
(
val
.
Borrow
(
)
,
i
,
new
NewReference
(
items
[
i
]
)
.
Steal
(
)
)
;
if
(
r
<
0
)
{
val
.
Dispose
(
)
;
throw
PythonException
.
ThrowLastAsClrException
(
)
;
}
}
return
val
.
Steal
(
)
;
}
/// <summary>
/// Creates a new Python list object from an array of objects.
/// </summary>
public
PyList
(
PyObject
[
]
items
)
:
base
(
FromArray
(
items
)
)
{
}
/// <summary>
/// Returns true if the given object is a Python list.
/// </summary>
public
static
bool
IsListType
(
PyObject
value
)
{
if
(
value
is
null
)
throw
new
ArgumentNullException
(
nameof
(
value
)
)
;
return
Runtime
.
PyList_Check
(
value
.
obj
)
;
}
/// <summary>
/// Converts a Python object to a Python list if possible, raising
/// a PythonException if the conversion is not possible. This is
/// equivalent to the Python expression "list(object)".
/// </summary>
public
static
PyList
AsList
(
PyObject
value
)
{
if
(
value
is
null
)
throw
new
ArgumentNullException
(
nameof
(
value
)
)
;
NewReference
op
=
Runtime
.
PySequence_List
(
value
.
Reference
)
;
if
(
op
.
IsNull
(
)
)
{
throw
PythonException
.
ThrowLastAsClrException
(
)
;
}
return
new
PyList
(
op
.
Steal
(
)
)
;
}
/// <summary>
/// Append an item to the list object.
/// </summary>
public
void
Append
(
PyObject
item
)
{
if
(
item
is
null
)
throw
new
ArgumentNullException
(
nameof
(
item
)
)
;
int
r
=
Runtime
.
PyList_Append
(
this
.
Reference
,
item
.
Reference
)
;
if
(
r
<
0
)
{
throw
PythonException
.
ThrowLastAsClrException
(
)
;
}
}
/// <summary>
/// Insert an item in the list object at the given index.
/// </summary>
public
void
Insert
(
int
index
,
PyObject
item
)
{
if
(
item
is
null
)
throw
new
ArgumentNullException
(
nameof
(
item
)
)
;
int
r
=
Runtime
.
PyList_Insert
(
this
,
index
,
item
)
;
if
(
r
<
0
)
{
throw
PythonException
.
ThrowLastAsClrException
(
)
;
}
}
/// <summary>
/// Reverse Method
/// </summary>
/// <remarks>
/// Reverse the order of the list object in place.
/// </remarks>
public
void
Reverse
(
)
{
int
r
=
Runtime
.
PyList_Reverse
(
this
.
Reference
)
;
if
(
r
<
0
)
{
throw
PythonException
.
ThrowLastAsClrException
(
)
;
}
}
/// <summary>
/// Sort Method
/// </summary>
/// <remarks>
/// Sort the list in place.
/// </remarks>
public
void
Sort
(
)
{
int
r
=
Runtime
.
PyList_Sort
(
this
.
Reference
)
;
if
(
r
<
0
)
{
throw
PythonException
.
ThrowLastAsClrException
(
)
;
}
}
public
override
int
GetHashCode
(
)
=>
rawPtr
.
GetHashCode
(
)
;
public
override
bool
Equals
(
PyObject
?
other
)
{
if
(
other
is
null
)
return
false
;
if
(
obj
==
other
.
obj
)
return
true
;
if
(
other
is
PyList
||
IsListType
(
other
)
)
return
base
.
Equals
(
other
)
;
return
false
;
}
}
}
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