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pythonnet/src/runtime/PythonTypes/PyInt.cs at master · Nolfurh/pythonnet · GitHub
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pythonnet
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runtime
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PythonTypes
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PyInt.cs
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using
System
;
using
System
.
Globalization
;
using
System
.
Numerics
;
using
System
.
Runtime
.
Serialization
;
namespace
Python
.
Runtime
{
/// <summary>
/// Represents a Python integer object.
/// See the documentation at https://docs.python.org/3/c-api/long.html
/// </summary>
public
class
PyInt
:
PyNumber
,
IFormattable
{
internal
PyInt
(
in
StolenReference
ptr
)
:
base
(
ptr
)
{
}
internal
PyInt
(
BorrowedReference
reference
)
:
base
(
reference
)
{
if
(
!
Runtime
.
PyInt_Check
(
reference
)
)
throw
new
ArgumentException
(
"object is not an int"
)
;
}
/// <summary>
/// PyInt Constructor
/// </summary>
/// <remarks>
/// Copy constructor - obtain a PyInt from a generic PyObject. An
/// ArgumentException will be thrown if the given object is not a
/// Python int object.
/// </remarks>
public
PyInt
(
PyObject
o
)
:
base
(
FromObject
(
o
)
)
{
}
private
static
BorrowedReference
FromObject
(
PyObject
o
)
{
if
(
o
is
null
)
throw
new
ArgumentNullException
(
nameof
(
o
)
)
;
if
(
!
IsIntType
(
o
)
)
{
throw
new
ArgumentException
(
"object is not an int"
)
;
}
return
o
.
Reference
;
}
/// <summary>
/// PyInt Constructor
/// </summary>
/// <remarks>
/// Creates a new Python int from an int32 value.
/// </remarks>
public
PyInt
(
int
value
)
:
base
(
Runtime
.
PyInt_FromInt32
(
value
)
.
StealOrThrow
(
)
)
{
}
/// <summary>
/// PyInt Constructor
/// </summary>
/// <remarks>
/// Creates a new Python int from a uint32 value.
/// </remarks>
public
PyInt
(
uint
value
)
:
this
(
(
long
)
value
)
{
}
/// <summary>
/// PyInt Constructor
/// </summary>
/// <remarks>
/// Creates a new Python int from an int64 value.
/// </remarks>
public
PyInt
(
long
value
)
:
base
(
Runtime
.
PyInt_FromInt64
(
value
)
.
StealOrThrow
(
)
)
{
}
/// <summary>
/// Creates a new Python int from a <see cref="UInt64"/> value.
/// </summary>
public
PyInt
(
ulong
value
)
:
base
(
Runtime
.
PyLong_FromUnsignedLongLong
(
value
)
.
StealOrThrow
(
)
)
{
}
/// <summary>
/// PyInt Constructor
/// </summary>
/// <remarks>
/// Creates a new Python int from an int16 value.
/// </remarks>
public
PyInt
(
short
value
)
:
this
(
(
int
)
value
)
{
}
/// <summary>
/// PyInt Constructor
/// </summary>
/// <remarks>
/// Creates a new Python int from a uint16 value.
/// </remarks>
public
PyInt
(
ushort
value
)
:
this
(
(
int
)
value
)
{
}
/// <summary>
/// PyInt Constructor
/// </summary>
/// <remarks>
/// Creates a new Python int from a byte value.
/// </remarks>
public
PyInt
(
byte
value
)
:
this
(
(
int
)
value
)
{
}
/// <summary>
/// PyInt Constructor
/// </summary>
/// <remarks>
/// Creates a new Python int from an sbyte value.
/// </remarks>
public
PyInt
(
sbyte
value
)
:
this
(
(
int
)
value
)
{
}
/// <summary>
/// PyInt Constructor
/// </summary>
/// <remarks>
/// Creates a new Python int from a string value.
/// </remarks>
public
PyInt
(
string
value
)
:
base
(
Runtime
.
PyLong_FromString
(
value
,
0
)
.
StealOrThrow
(
)
)
{
}
public
PyInt
(
BigInteger
value
)
:
this
(
value
.
ToString
(
CultureInfo
.
InvariantCulture
)
)
{
}
protected
PyInt
(
SerializationInfo
info
,
StreamingContext
context
)
:
base
(
info
,
context
)
{
}
/// <summary>
/// IsIntType Method
/// </summary>
/// <remarks>
/// Returns true if the given object is a Python int.
/// </remarks>
public
static
bool
IsIntType
(
PyObject
value
)
{
if
(
value
is
null
)
throw
new
ArgumentNullException
(
nameof
(
value
)
)
;
return
Runtime
.
PyInt_Check
(
value
.
obj
)
;
}
/// <summary>
/// Convert a Python object to a Python int if possible, raising
/// a PythonException if the conversion is not possible. This is
/// equivalent to the Python expression "int(object)".
/// </summary>
public
static
PyInt
AsInt
(
PyObject
value
)
{
if
(
value
is
null
)
throw
new
ArgumentNullException
(
nameof
(
value
)
)
;
var
op
=
Runtime
.
PyNumber_Long
(
value
.
Reference
)
;
PythonException
.
ThrowIfIsNull
(
op
)
;
return
new
PyInt
(
op
.
Steal
(
)
)
;
}
/// <summary>
/// ToInt16 Method
/// </summary>
/// <remarks>
/// Return the value of the Python int object as an int16.
/// </remarks>
public
short
ToInt16
(
)
{
return
Convert
.
ToInt16
(
ToInt32
(
)
)
;
}
/// <summary>
/// Return the value of the Python int object as an <see cref="Int32"/>.
/// </summary>
public
int
ToInt32
(
)
=>
Converter
.
ToInt32
(
Reference
)
;
/// <summary>
/// ToInt64 Method
/// </summary>
/// <remarks>
/// Return the value of the Python int object as an int64.
/// </remarks>
public
long
ToInt64
(
)
{
long
?
val
=
Runtime
.
PyLong_AsLongLong
(
obj
)
;
if
(
val
is
null
)
{
throw
PythonException
.
ThrowLastAsClrException
(
)
;
}
return
val
.
Value
;
}
public
BigInteger
ToBigInteger
(
)
{
using
var
pyHex
=
Runtime
.
HexCallable
.
Invoke
(
this
)
;
string
hex
=
pyHex
.
As
<
string
>
(
)
;
int
offset
=
0
;
bool
neg
=
false
;
if
(
hex
[
0
]
==
'-'
)
{
offset
++
;
neg
=
true
;
}
byte
[
]
littleEndianBytes
=
new
byte
[
(
hex
.
Length
-
offset
+
1
)
/
2
+
1
]
;
for
(
;
offset
<
hex
.
Length
;
offset
++
)
{
int
littleEndianHexIndex
=
hex
.
Length
-
1
-
offset
;
int
byteIndex
=
littleEndianHexIndex
/
2
;
int
isByteTopHalf
=
littleEndianHexIndex
&
1
;
int
valueShift
=
isByteTopHalf
*
4
;
littleEndianBytes
[
byteIndex
]
+=
(
byte
)
(
Util
.
HexToInt
(
hex
[
offset
]
)
<<
valueShift
)
;
}
var
result
=
new
BigInteger
(
littleEndianBytes
)
;
return
neg
?
-
result
:
result
;
}
public
string
ToString
(
string
format
,
IFormatProvider
formatProvider
)
{
using
var
_
=
Py
.
GIL
(
)
;
return
ToBigInteger
(
)
.
ToString
(
format
,
formatProvider
)
;
}
public
override
TypeCode
GetTypeCode
(
)
=>
TypeCode
.
Int64
;
}
}
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