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pythonnet/src/runtime/iterator.cs at skip-while-initializing · DEVBOX10/pythonnet · GitHub
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runtime
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iterator.cs
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runtime
/
iterator.cs
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using
System
;
using
System
.
Collections
;
namespace
Python
.
Runtime
{
/// <summary>
/// Implements a generic Python iterator for IEnumerable objects and
/// managed array objects. This supports 'for i in object:' in Python.
/// </summary>
internal
class
Iterator
:
ExtensionType
{
private
IEnumerator
iter
;
private
Type
elemType
;
public
Iterator
(
IEnumerator
e
,
Type
elemType
)
{
iter
=
e
;
this
.
elemType
=
elemType
;
}
/// <summary>
/// Implements support for the Python iteration protocol.
/// </summary>
public
static
NewReference
tp_iternext
(
BorrowedReference
ob
)
{
var
self
=
(
Iterator
)
GetManagedObject
(
ob
)
!
;
try
{
if
(
!
self
.
iter
.
MoveNext
(
)
)
{
Exceptions
.
SetError
(
Exceptions
.
StopIteration
,
Runtime
.
PyNone
)
;
return
default
;
}
}
catch
(
Exception
e
)
{
if
(
e
.
InnerException
!=
null
)
{
e
=
e
.
InnerException
;
}
Exceptions
.
SetError
(
e
)
;
return
default
;
}
object
item
=
self
.
iter
.
Current
;
return
Converter
.
ToPython
(
item
,
self
.
elemType
)
;
}
public
static
NewReference
tp_iter
(
BorrowedReference
ob
)
=>
new
(
ob
)
;
}
}
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