Modifier and Type	Class and Description
private static class	PyMemberDescr._double
private static class	PyMemberDescr._int
private static class	PyMemberDescr._Object An `object` attribute that may be deleted (represented by `null` in Java).
private static class	PyMemberDescr._String A string attribute that may be deleted (represented by `null` in Java).
pack-priv static enum	PyMemberDescr.Flag Acceptable values in the `flags`.
private abstract static class	PyMemberDescr.Reference Behaviour for reference types.

Modifier and Type	Field and Description
pack-priv String	doc Documentation string for the member (or `null`).
protected final EnumSet<PyMemberDescr.Flag>	flags Attributes controlling access and audit.
pack-priv VarHandle	handle Reference to the field (offset) to access.
pack-priv static final PyType	TYPE The type of Python object this class implements.
private static final String	UNSUPPORTED_TYPE

Access	Constructor and Description
pack-priv	PyMemberDescr(PyType Python type containing this member objclass, String by which the member is known to Python name, VarHandle to the Java member handle, EnumSet<PyMemberDescr.Flag> characteristics controlling access flags, String documentation string doc) Construct a `PyMemberDescr` from a client-supplied handle.

Method Summary

Modifier and Type	Method and Description
pack-priv void	__delete__(Object object on which the attribute is sought obj) Implements abstract org.python.core.DataDescriptor.__delete__. The `__delete__` special method of the Python descriptor protocol, implementing `del obj.name`.
pack-priv Object	__get__(Object object on which the attribute is sought or `null` obj, PyType is ignored type) Implements abstract org.python.core.Descriptor.__get__. The `__get__` special method of the Python descriptor protocol, implementing `obj.name` or possibly `type.name`.
private Object	__repr__()
pack-priv void	__set__(Object object on which the attribute is sought obj, Object to assign (not `null`) value) Implements abstract org.python.core.DataDescriptor.__set__. The `__set__` special method of the Python descriptor protocol, implementing `obj.name = value`.
protected void	check(Object target object (non-null argument to `__get__`) obj) Overrides org.python.core.Descriptor.check. `descr.__get__(obj, type)` has been called on this descriptor.
protected void	checkDelete(Object target object (argument to `__delete__`) obj) Overrides org.python.core.DataDescriptor.checkDelete. `descr.__delete__(obj)` has been called on this descriptor.
protected void	checkSet(Object target object (argument to `__set__`) obj) Overrides org.python.core.DataDescriptor.checkSet. `descr.__set__(obj, value)` has been called on this descriptor.
protected void	delete(Object object to access via `handle` (never null) obj) A method to delete `del o.name`.
pack-priv static PyMemberDescr	Returns: descriptor for access to the field forField(PyType Python type that owns the descriptor objclass, String by which member known externally name, Field field to expose through this descriptor field, MethodHandles.Lookup authorisation to access fields lookup, EnumSet<PyMemberDescr.Flag> supplying additional characteristics flags, String documentation string (may be `null`) doc) Create a `PyMemberDescr` with behaviour specific to the class of object being exposed.
protected abstract Object	Returns: field value get(Object object to access via `handle` (never null) obj) A method to get `o.name`, with conversion from the internal field value if necessary (which will always succeed).
pack-priv static Object	member_get_doc(PyMemberDescr descr)
protected abstract void	set(Object object to access via `handle` (never null) obj, Object value to assign: never null, may be `None` v) A method to set `o.name = v`, with conversion to the internal field value if necessary.
private static VarHandle	varHandle(Field f, MethodHandles.Lookup lookup)

Inherited from org.python.core.DataDescriptor:: attrMustBe attrMustBe cannotDeleteAttr cannotReadAttr cannotWriteAttr

Field Detail

doc	back to summary
pack-priv String doc Documentation string for the member (or `null`).

flags	back to summary
protected final EnumSet<PyMemberDescr.Flag> flags Attributes controlling access and audit. (In CPython, the RESTRICTED forms cause a call to `sys.audit` and are here for compatibility with that eventual idea.) Note that `OPTIONAL`, although in the API, is represented as a sub-class attribute, to minimise work in `checkSet(Object)` and `checkDelete(Object)`

handle	back to summary
pack-priv VarHandle handle Reference to the field (offset) to access.

TYPE	back to summary
pack-priv static final PyType TYPE The type of Python object this class implements.

UNSUPPORTED_TYPE	back to summary
private static final String UNSUPPORTED_TYPE

Constructor Detail

PyMemberDescr back to summary

PyMemberDescr	back to summary
pack-priv PyMemberDescr(PyType objclass, String name, VarHandle handle, EnumSet<PyMemberDescr.Flag> flags, String doc) Construct a `PyMemberDescr` from a client-supplied handle. This allows all JVM-supported access modes, but you have to make your own handle. Parameters objclass:PyType Python type containing this member name:String by which the member is known to Python handle:VarHandle to the Java member flags:EnumSet<PyMemberDescr.Flag> characteristics controlling access doc:String documentation string

pack-priv PyMemberDescr(PyType objclass, String name, VarHandle handle, EnumSet<PyMemberDescr.Flag> flags, String doc)

Construct a PyMemberDescr from a client-supplied handle. This allows all JVM-supported access modes, but you have to make your own handle.

Parameters

objclass:PyType: Python type containing this member
name:String: by which the member is known to Python
handle:VarHandle: to the Java member
flags:EnumSet<PyMemberDescr.Flag>: characteristics controlling access
doc:String: documentation string

Method Detail

__delete__ back to summary

__delete__	back to summary
pack-priv void __delete__(Object obj) throws TypeError, Throwable Implements abstract org.python.core.DataDescriptor.__delete__. Doc from org.python.core.DataDescriptor.__delete__. The `__delete__` special method of the Python descriptor protocol, implementing `del obj.name`. In general, `obj` must be of type `objclass`. Parameters obj:Object object on which the attribute is sought Annotations @Override Exceptions Throwable: from the implementation of the deleter

pack-priv void __delete__(Object obj) throws TypeError, Throwable

Implements abstract org.python.core.DataDescriptor.__delete__.

Doc from org.python.core.DataDescriptor.__delete__.

The __delete__ special method of the Python descriptor protocol, implementing del obj.name. In general, obj must be of type objclass.

Parameters

obj:Object: object on which the attribute is sought

Annotations

@Override

Exceptions

Throwable:: from the implementation of the deleter

__get__ back to summary

__get__	back to summary
pack-priv Object __get__(Object obj, PyType type) Implements abstract org.python.core.Descriptor.__get__. Doc from org.python.core.Descriptor.__get__. The `__get__` special method of the Python descriptor protocol, implementing `obj.name` or possibly `type.name`. If `obj != null` call `get` on it to return a value. `obj` must be of type `objclass`. A call made with `obj == null` returns `this` descriptor. Parameters obj:Object object on which the attribute is sought or `null` type:PyType is ignored Returns:Object attribute value, bound object or this attribute Annotations @Override

pack-priv Object __get__(Object obj, PyType type)

Implements abstract org.python.core.Descriptor.__get__.

Doc from org.python.core.Descriptor.__get__.

The __get__ special method of the Python descriptor protocol, implementing obj.name or possibly type.name. If obj != null call get on it to return a value. obj must be of type objclass. A call made with obj == null returns this descriptor.

Parameters

obj:Object: object on which the attribute is sought or null
type:PyType: is ignored

Returns:Object

attribute value, bound object or this attribute

Annotations

@Override

__repr__	back to summary
private Object __repr__() Annotations @SuppressWarnings:unused

__set__ back to summary

__set__	back to summary
pack-priv void __set__(Object obj, Object value) throws TypeError, Throwable Implements abstract org.python.core.DataDescriptor.__set__. Doc from org.python.core.DataDescriptor.__set__. The `__set__` special method of the Python descriptor protocol, implementing `obj.name = value`. In general, `obj` must be of type `objclass`. Parameters obj:Object object on which the attribute is sought value:Object to assign (not `null`) Annotations @Override Exceptions Throwable: from the implementation of the setter

pack-priv void __set__(Object obj, Object value) throws TypeError, Throwable

Implements abstract org.python.core.DataDescriptor.__set__.

Doc from org.python.core.DataDescriptor.__set__.

The __set__ special method of the Python descriptor protocol, implementing obj.name = value. In general, obj must be of type objclass.

Parameters

obj:Object: object on which the attribute is sought
value:Object: to assign (not null)

Annotations

@Override

Exceptions

Throwable:: from the implementation of the setter

check back to summary

check	back to summary
protected void check(Object obj) throws TypeError Overrides org.python.core.Descriptor.check. Doc from org.python.core.Descriptor.check. `descr.__get__(obj, type)` has been called on this descriptor. We must check that the descriptor applies to the type of object supplied as the `obj` argument. From Python, anything could be presented, but when we operate on it, we'll be assuming the particular `objclass` type. Implementation Note Compare CPython `descr_check` in `descrobject.c`. We differ in that: (1) We throw directly on failure. (2) The condition `obj==null` (when found on a type) is the caller's job. (3) We fold the `sys.audit` call into this check. Parameters obj:Object target object (non-null argument to `__get__`) Annotations @Override Exceptions TypeError: if descriptor doesn't apply to `obj`

protected void check(Object obj) throws TypeError

Overrides org.python.core.Descriptor.check.

Doc from org.python.core.Descriptor.check.

descr.__get__(obj, type) has been called on this descriptor. We must check that the descriptor applies to the type of object supplied as the obj argument. From Python, anything could be presented, but when we operate on it, we'll be assuming the particular objclass type.

Implementation Note

Compare CPython descr_check in descrobject.c. We differ in that: (1) We throw directly on failure. (2) The condition obj==null (when found on a type) is the caller's job. (3) We fold the sys.audit call into this check.

Parameters

obj:Object: target object (non-null argument to __get__)

Annotations

@Override

Exceptions

TypeError:: if descriptor doesn't apply to obj

checkDelete back to summary

checkDelete	back to summary
protected void checkDelete(Object obj) throws TypeError Overrides org.python.core.DataDescriptor.checkDelete. `descr.__delete__(obj)` has been called on this descriptor. We must check that the descriptor applies to the type of object supplied as the `obj` argument. From Python, anything could be presented, but when we operate on it, we'll be assuming the particular `objclass` type. Parameters obj:Object Doc from org.python.core.DataDescriptor.checkDelete. target object (argument to `__delete__`) Annotations @Override

protected void checkDelete(Object obj) throws TypeError

Overrides org.python.core.DataDescriptor.checkDelete.

descr.__delete__(obj) has been called on this descriptor. We must check that the descriptor applies to the type of object supplied as the obj argument. From Python, anything could be presented, but when we operate on it, we'll be assuming the particular objclass type.

Parameters

obj:Object

Doc from org.python.core.DataDescriptor.checkDelete.

target object (argument to __delete__)

Annotations

@Override

checkSet back to summary

checkSet	back to summary
protected void checkSet(Object obj) throws TypeError Overrides org.python.core.DataDescriptor.checkSet. `descr.__set__(obj, value)` has been called on this descriptor. We must check that the descriptor applies to the type of object supplied as the `obj` argument. From Python, anything could be presented, but when we operate on it, we'll be assuming the particular `objclass` type. Parameters obj:Object target object (argument to `__set__`) Annotations @Override Exceptions TypeError: if descriptor doesn't apply to `obj`

protected void checkSet(Object obj) throws TypeError

Overrides org.python.core.DataDescriptor.checkSet.

descr.__set__(obj, value) has been called on this descriptor. We must check that the descriptor applies to the type of object supplied as the obj argument. From Python, anything could be presented, but when we operate on it, we'll be assuming the particular objclass type.

Parameters

obj:Object: target object (argument to __set__)

Annotations

@Override

Exceptions

TypeError:: if descriptor doesn't apply to obj

delete back to summary

delete	back to summary
protected void delete(Object obj) throws TypeError, AttributeError A method to delete `del o.name`. This method is called from `__delete__(Object)`, after checks, to implement the type-specific delete. Implementation Note The default implementation is correct for primitive types (i.e. the majority) in raising `TypeError` with the message that the attribute cannot be deleted. Parameters obj:Object object to access via `handle` (never null) Exceptions TypeError: when not a type that can be deleted AttributeError: when already deleted/undefined

protected void delete(Object obj) throws TypeError, AttributeError

A method to delete del o.name. This method is called from __delete__(Object), after checks, to implement the type-specific delete.

Implementation Note

The default implementation is correct for primitive types (i.e. the majority) in raising TypeError with the message that the attribute cannot be deleted.

Parameters

obj:Object: object to access via handle (never null)

Exceptions

TypeError:: when not a type that can be deleted
AttributeError:: when already deleted/undefined

forField back to summary

forField	back to summary
pack-priv static PyMemberDescr forField(PyType objclass, String name, Field field, MethodHandles.Lookup lookup, EnumSet<PyMemberDescr.Flag> flags, String doc) throws InterpreterError Create a `PyMemberDescr` with behaviour specific to the class of object being exposed. Parameters objclass:PyType Python type that owns the descriptor name:String by which member known externally field:Field field to expose through this descriptor lookup:MethodHandles.Lookup authorisation to access fields flags:EnumSet<PyMemberDescr.Flag> supplying additional characteristics doc:String documentation string (may be `null`) Returns:PyMemberDescr descriptor for access to the field Exceptions InterpreterError: if the field type is not supported

pack-priv static PyMemberDescr forField(PyType objclass, String name, Field field, MethodHandles.Lookup lookup, EnumSet<PyMemberDescr.Flag> flags, String doc) throws InterpreterError

Create a PyMemberDescr with behaviour specific to the class of object being exposed.

Parameters

objclass:PyType: Python type that owns the descriptor
name:String: by which member known externally
field:Field: field to expose through this descriptor
lookup:MethodHandles.Lookup: authorisation to access fields
flags:EnumSet<PyMemberDescr.Flag>: supplying additional characteristics
doc:String: documentation string (may be null)

Returns:PyMemberDescr

descriptor for access to the field

Exceptions

InterpreterError:: if the field type is not supported

get back to summary

get	back to summary
protected abstract Object get(Object obj) throws AttributeError A method to get `o.name`, with conversion from the internal field value if necessary (which will always succeed). This method is called from `__get__(Object, PyType)`, after checks, to implement the type-specific conversion. Parameters obj:Object object to access via `handle` (never null) Returns:Object field value

protected abstract Object get(Object obj) throws AttributeError

A method to get o.name, with conversion from the internal field value if necessary (which will always succeed). This method is called from __get__(Object, PyType), after checks, to implement the type-specific conversion.

Parameters

obj:Object: object to access via handle (never null)

Returns:Object

field value

member_get_doc	back to summary
pack-priv static Object member_get_doc(PyMemberDescr descr)

set back to summary

set	back to summary
protected abstract void set(Object obj, Object v) throws AttributeError, TypeError, Throwable A method to set `o.name = v`, with conversion to the internal field value if necessary. This method is called from `__set__(Object, Object)`, after checks, to implement the type-specific conversion. Parameters obj:Object object to access via `handle` (never null) v:Object value to assign: never null, may be `None` Exceptions TypeError: if v cannot be converted Throwable: potentially from conversion

protected abstract void set(Object obj, Object v) throws AttributeError, TypeError, Throwable

A method to set o.name = v, with conversion to the internal field value if necessary. This method is called from __set__(Object, Object), after checks, to implement the type-specific conversion.

Parameters

obj:Object: object to access via handle (never null)
v:Object: value to assign: never null, may be None

Exceptions

TypeError:: if v cannot be converted
Throwable:: potentially from conversion

varHandle	back to summary
private static VarHandle varHandle(Field f, MethodHandles.Lookup lookup)

org.python.core back to summary

private Class PyMemberDescr._double

Class Inheritance

extends PyMemberDescr

Field Summary

Inherited from org.python.core.PyMemberDescr:: doc flags handle TYPE

Constructor Summary

Access	Constructor and Description
pack-priv	_double(PyType objclass, String name, VarHandle handle, EnumSet<PyMemberDescr.Flag> flags, String doc)

Method Summary

Modifier and Type	Method and Description
protected Object	get(Object object to access via `handle` (never null) obj) Implements abstract org.python.core.PyMemberDescr.get. A method to get `o.name`, with conversion from the internal field value if necessary (which will always succeed).
protected void	set(Object object to access via `handle` (never null) obj, Object value to assign: never null, may be `None` value) Implements abstract org.python.core.PyMemberDescr.set. A method to set `o.name = v`, with conversion to the internal field value if necessary.

Inherited from org.python.core.PyMemberDescr:: __delete____get____set__check checkDelete checkSet delete forField member_get_doc

Constructor Detail

_double	back to summary
pack-priv _double(PyType objclass, String name, VarHandle handle, EnumSet<PyMemberDescr.Flag> flags, String doc)

Method Detail

get back to summary

get	back to summary
protected Object get(Object obj) Implements abstract org.python.core.PyMemberDescr.get. Doc from org.python.core.PyMemberDescr.get. A method to get `o.name`, with conversion from the internal field value if necessary (which will always succeed). This method is called from `__get__(Object, PyType)`, after checks, to implement the type-specific conversion. Parameters obj:Object object to access via `handle` (never null) Returns:Object field value Annotations @Override

protected Object get(Object obj)

Implements abstract org.python.core.PyMemberDescr.get.

Doc from org.python.core.PyMemberDescr.get.

Parameters

obj:Object: object to access via handle (never null)

Returns:Object

field value

Annotations

@Override

set back to summary

set	back to summary
protected void set(Object obj, Object value) throws TypeError, Throwable Implements abstract org.python.core.PyMemberDescr.set. Doc from org.python.core.PyMemberDescr.set. A method to set `o.name = v`, with conversion to the internal field value if necessary. This method is called from `__set__(Object, Object)`, after checks, to implement the type-specific conversion. Parameters obj:Object object to access via `handle` (never null) value:Object value to assign: never null, may be `None` Annotations @Override Exceptions TypeError: if v cannot be converted Throwable: potentially from conversion

protected void set(Object obj, Object value) throws TypeError, Throwable

Implements abstract org.python.core.PyMemberDescr.set.

Doc from org.python.core.PyMemberDescr.set.

A method to set o.name = v, with conversion to the internal field value if necessary. This method is called from __set__(Object, Object), after checks, to implement the type-specific conversion.

Parameters

obj:Object: object to access via handle (never null)
value:Object: value to assign: never null, may be None

Annotations

@Override

Exceptions

TypeError:: if v cannot be converted
Throwable:: potentially from conversion

org.python.core back to summary

private Class PyMemberDescr._int

Class Inheritance

extends PyMemberDescr

Field Summary

Inherited from org.python.core.PyMemberDescr:: doc flags handle TYPE

Constructor Summary

Access	Constructor and Description
pack-priv	_int(PyType objclass, String name, VarHandle handle, EnumSet<PyMemberDescr.Flag> flags, String doc)

Method Summary

Modifier and Type	Method and Description
protected Object	get(Object object to access via `handle` (never null) obj) Implements abstract org.python.core.PyMemberDescr.get. A method to get `o.name`, with conversion from the internal field value if necessary (which will always succeed).
protected void	set(Object object to access via `handle` (never null) obj, Object value to assign: never null, may be `None` value) Implements abstract org.python.core.PyMemberDescr.set. A method to set `o.name = v`, with conversion to the internal field value if necessary.

Inherited from org.python.core.PyMemberDescr:: __delete____get____set__check checkDelete checkSet delete forField member_get_doc

Constructor Detail

_int	back to summary
pack-priv _int(PyType objclass, String name, VarHandle handle, EnumSet<PyMemberDescr.Flag> flags, String doc)

Method Detail

get back to summary

get	back to summary
protected Object get(Object obj) Implements abstract org.python.core.PyMemberDescr.get. Doc from org.python.core.PyMemberDescr.get. A method to get `o.name`, with conversion from the internal field value if necessary (which will always succeed). This method is called from `__get__(Object, PyType)`, after checks, to implement the type-specific conversion. Parameters obj:Object object to access via `handle` (never null) Returns:Object field value Annotations @Override

protected Object get(Object obj)

Implements abstract org.python.core.PyMemberDescr.get.

Doc from org.python.core.PyMemberDescr.get.

Parameters

obj:Object: object to access via handle (never null)

Returns:Object

field value

Annotations

@Override

set back to summary

set	back to summary
protected void set(Object obj, Object value) throws TypeError, Throwable Implements abstract org.python.core.PyMemberDescr.set. Doc from org.python.core.PyMemberDescr.set. A method to set `o.name = v`, with conversion to the internal field value if necessary. This method is called from `__set__(Object, Object)`, after checks, to implement the type-specific conversion. Parameters obj:Object object to access via `handle` (never null) value:Object value to assign: never null, may be `None` Annotations @Override Exceptions TypeError: if v cannot be converted Throwable: potentially from conversion

protected void set(Object obj, Object value) throws TypeError, Throwable

Implements abstract org.python.core.PyMemberDescr.set.

Doc from org.python.core.PyMemberDescr.set.

A method to set o.name = v, with conversion to the internal field value if necessary. This method is called from __set__(Object, Object), after checks, to implement the type-specific conversion.

Parameters

obj:Object: object to access via handle (never null)
value:Object: value to assign: never null, may be None

Annotations

@Override

Exceptions

TypeError:: if v cannot be converted
Throwable:: potentially from conversion

org.python.core back to summary

private Class PyMemberDescr._Object

Class Inheritance

extends Reference

An object attribute that may be deleted (represented by null in Java).

Field Summary

Inherited from org.python.core.PyMemberDescr.Reference:: optional

Constructor Summary

Access	Constructor and Description
pack-priv	_Object(PyType objclass, String name, VarHandle handle, EnumSet<PyMemberDescr.Flag> flags, String doc, boolean optional)

Method Summary

Modifier and Type	Method and Description
protected Object	get(Object object to access via `handle` (never null) obj) Implements abstract org.python.core.PyMemberDescr.get. A method to get `o.name`, with conversion from the internal field value if necessary (which will always succeed).
protected void	set(Object object to access via `handle` (never null) obj, Object value to assign: never null, may be `None` value) Implements abstract org.python.core.PyMemberDescr.set. A method to set `o.name = v`, with conversion to the internal field value if necessary.

Inherited from org.python.core.PyMemberDescr.Reference:: delete

Constructor Detail

_Object	back to summary
pack-priv _Object(PyType objclass, String name, VarHandle handle, EnumSet<PyMemberDescr.Flag> flags, String doc, boolean optional)

Method Detail

get back to summary

get	back to summary
protected Object get(Object obj) Implements abstract org.python.core.PyMemberDescr.get. Doc from org.python.core.PyMemberDescr.get. A method to get `o.name`, with conversion from the internal field value if necessary (which will always succeed). This method is called from `__get__(Object, PyType)`, after checks, to implement the type-specific conversion. Parameters obj:Object object to access via `handle` (never null) Returns:Object field value Annotations @Override

protected Object get(Object obj)

Implements abstract org.python.core.PyMemberDescr.get.

Doc from org.python.core.PyMemberDescr.get.

Parameters

obj:Object: object to access via handle (never null)

Returns:Object

field value

Annotations

@Override

set back to summary

set	back to summary
protected void set(Object obj, Object value) throws TypeError, Throwable Implements abstract org.python.core.PyMemberDescr.set. Doc from org.python.core.PyMemberDescr.set. A method to set `o.name = v`, with conversion to the internal field value if necessary. This method is called from `__set__(Object, Object)`, after checks, to implement the type-specific conversion. Parameters obj:Object object to access via `handle` (never null) value:Object value to assign: never null, may be `None` Annotations @Override Exceptions TypeError: if v cannot be converted Throwable: potentially from conversion

protected void set(Object obj, Object value) throws TypeError, Throwable

Implements abstract org.python.core.PyMemberDescr.set.

Doc from org.python.core.PyMemberDescr.set.

A method to set o.name = v, with conversion to the internal field value if necessary. This method is called from __set__(Object, Object), after checks, to implement the type-specific conversion.

Parameters

obj:Object: object to access via handle (never null)
value:Object: value to assign: never null, may be None

Annotations

@Override

Exceptions

TypeError:: if v cannot be converted
Throwable:: potentially from conversion

org.python.core back to summary

private Class PyMemberDescr._String

Class Inheritance

extends Reference

A string attribute that may be deleted (represented by null in Java).

Field Summary

Inherited from org.python.core.PyMemberDescr.Reference:: optional

Constructor Summary

Access	Constructor and Description
pack-priv	_String(PyType objclass, String name, VarHandle handle, EnumSet<PyMemberDescr.Flag> flags, String doc, boolean optional)

Method Summary

Modifier and Type	Method and Description
protected Object	get(Object object to access via `handle` (never null) obj) Implements abstract org.python.core.PyMemberDescr.get. A method to get `o.name`, with conversion from the internal field value if necessary (which will always succeed).
protected void	set(Object object to access via `handle` (never null) obj, Object value to assign: never null, may be `None` value) Implements abstract org.python.core.PyMemberDescr.set. A method to set `o.name = v`, with conversion to the internal field value if necessary.

Inherited from org.python.core.PyMemberDescr.Reference:: delete

Constructor Detail

_String	back to summary
pack-priv _String(PyType objclass, String name, VarHandle handle, EnumSet<PyMemberDescr.Flag> flags, String doc, boolean optional)

Method Detail

get back to summary

get	back to summary
protected Object get(Object obj) Implements abstract org.python.core.PyMemberDescr.get. Doc from org.python.core.PyMemberDescr.get. A method to get `o.name`, with conversion from the internal field value if necessary (which will always succeed). This method is called from `__get__(Object, PyType)`, after checks, to implement the type-specific conversion. Parameters obj:Object object to access via `handle` (never null) Returns:Object field value Annotations @Override

protected Object get(Object obj)

Implements abstract org.python.core.PyMemberDescr.get.

Doc from org.python.core.PyMemberDescr.get.

Parameters

obj:Object: object to access via handle (never null)

Returns:Object

field value

Annotations

@Override

set back to summary

set	back to summary
protected void set(Object obj, Object value) throws TypeError, Throwable Implements abstract org.python.core.PyMemberDescr.set. Doc from org.python.core.PyMemberDescr.set. A method to set `o.name = v`, with conversion to the internal field value if necessary. This method is called from `__set__(Object, Object)`, after checks, to implement the type-specific conversion. Parameters obj:Object object to access via `handle` (never null) value:Object value to assign: never null, may be `None` Annotations @Override Exceptions TypeError: if v cannot be converted Throwable: potentially from conversion

protected void set(Object obj, Object value) throws TypeError, Throwable

Implements abstract org.python.core.PyMemberDescr.set.

Doc from org.python.core.PyMemberDescr.set.

A method to set o.name = v, with conversion to the internal field value if necessary. This method is called from __set__(Object, Object), after checks, to implement the type-specific conversion.

Parameters

obj:Object: object to access via handle (never null)
value:Object: value to assign: never null, may be None

Annotations

@Override

Exceptions

TypeError:: if v cannot be converted
Throwable:: potentially from conversion

org.python.core back to summary

pack-priv final Enum PyMemberDescr.Flag

Class Inheritance

extends Enum<PyMemberDescr.Flag>

java.lang.Object
java.lang.Enum
org.python.core.PyMemberDescr.Flag

Acceptable values in the flags.

Field Summary

Modifier and Type	Field and Description
public static final PyMemberDescr.Flag	OPTIONAL
public static final PyMemberDescr.Flag	READ_RESTRICTED
public static final PyMemberDescr.Flag	READONLY
public static final PyMemberDescr.Flag	WRITE_RESTRICTED

Constructor Summary

Access	Constructor and Description
private	Flag()

Method Summary

Modifier and Type	Method and Description
public static PyMemberDescr.Flag	valueOf(String name)
public static PyMemberDescr.Flag[]	values()

Inherited from java.lang.Enum:: clone compareTo describeConstable equals finalize getDeclaringClass hashCode name ordinal toString valueOf

Field Detail

OPTIONAL	back to summary
public static final PyMemberDescr.Flag OPTIONAL

READ_RESTRICTED	back to summary
public static final PyMemberDescr.Flag READ_RESTRICTED

READONLY	back to summary
public static final PyMemberDescr.Flag READONLY

WRITE_RESTRICTED	back to summary
public static final PyMemberDescr.Flag WRITE_RESTRICTED

Constructor Detail

Flag	back to summary
private Flag()

Method Detail

valueOf	back to summary
public static PyMemberDescr.Flag valueOf(String name)

values	back to summary
public static PyMemberDescr.Flag[] values()

org.python.core back to summary

private abstract Class PyMemberDescr.Reference

Class Inheritance

extends PyMemberDescr

Known Direct Subclasses

org.python.core.PyMemberDescr._String, org.python.core.PyMemberDescr._Object

Behaviour for reference types.

Field Summary

Modifier and Type	Field and Description
protected final boolean	optional Controls what happens when the attribute implementation is `null`, If `true`, `get(Object)` will raise `AttributeError`.

Inherited from org.python.core.PyMemberDescr:: doc flags handle TYPE

Constructor Summary

Access	Constructor and Description
pack-priv	Reference(PyType objclass, String name, VarHandle handle, EnumSet<PyMemberDescr.Flag> flags, String doc, boolean optional)

Method Summary

Modifier and Type	Method and Description
protected void	delete(Object object to access via `handle` (never null) obj) Overrides org.python.core.PyMemberDescr.delete. A method to delete `del o.name`.

Inherited from org.python.core.PyMemberDescr:: __delete____get____set__check checkDelete checkSet forField get member_get_doc set

Field Detail

optional	back to summary
protected final boolean optional Controls what happens when the attribute implementation is `null`, If `true`, `get(Object)` will raise `AttributeError`. If `false`, `get(Object)` will return `None`. Delete sets the attribute implementation to `null`.

Constructor Detail

Reference	back to summary
pack-priv Reference(PyType objclass, String name, VarHandle handle, EnumSet<PyMemberDescr.Flag> flags, String doc, boolean optional)

Method Detail

delete back to summary

protected void delete(Object obj)

Overrides org.python.core.PyMemberDescr.delete.

Doc from org.python.core.PyMemberDescr.delete.

A method to delete del o.name. This method is called from __delete__(Object), after checks, to implement the type-specific delete.

If optional and the attribute is null, reference types raise an AttributeError.

Parameters

obj:Object: object to access via handle (never null)

Annotations

@Override

pack-priv abstract Class PyMemberDescr

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private Class PyMemberDescr._double

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private Class PyMemberDescr._int

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private Class PyMemberDescr._Object

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private Class PyMemberDescr._String

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pack-priv final Enum PyMemberDescr.Flag

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private abstract Class PyMemberDescr.Reference

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