Jython 3.0.0-snapshot · org.python.core.PyType

Modifier and Type	Class and Description
private static class	PyType.BootstrapTask A record used to defer the completion of a particular type object.
public static enum	PyType.Flag Enumeration of the characteristics of a type.
public static class	PyType.Spec A specification for a Python type.

Field Summary

Modifier and Type	Field and Description
pack-priv final int	acceptedCount The number of Java classes in `classes` that are acceptable as `self` in methods.
private PyType	base The `__base__` of this type.
private PyType[]	bases The `__bases__` of this type, which are the types named in heading of the Python `class` definition, or just `object` if none are named, or an empty array in the special case of `object` itself.
pack-priv final Map<Slot, Operations.BinopGrid>	binopTable Handle arrays for in which to look up binary class-specific methods when these are provided as a supplementary implementation class.
pack-priv static final Map<Class<?>, PyType.BootstrapTask>	bootstrapTasks Classes for which the type system has to prepare `PyType` objects in two stages, deferring the filling of the dictionary of the type until all classes in this set have completed their static initialisation in Java and built a `PyType`.
pack-priv final Class<?>[]	classes The Java classes appearing as operands in the operations and methods of the type.
pack-priv final Class<?>	definingClass The Java class defining operations on instances of the type.
private final Map<String, Object>	dict The dictionary of the type is always an ordered `Map`.
pack-priv static final PyType[]	EMPTY_TYPE_ARRAY An empty array of type objects
pack-priv EnumSet<PyType.Flag>	flags Characteristics of the type, to determine behaviours (such as mutability) of instances or the type itself, or to provide quick answers to frequent questions such as "are instances data descriptors".
pack-priv final int	implCount The number of `classes` in `classes` recognised by the run-time as implementations of the type.
private static MethodHandles.Lookup	LOOKUP Lookup object on `PyType`.
private PyType[]	mro The `__mro__` of this type, that is, the method resolution order, as defined for Python and constructed by the `mro()` method (which may be overridden), by analysis of the `__bases__`.
pack-priv final String	name Name of the type.
pack-priv static final PyType	OBJECT_TYPE The type object of `object` objects.
private static final PyType[]	ONLY_OBJECT An array containing only 'object', the bases of many types.
public static final PyType	TYPE The type object of `type` objects.
private final PyType	type Particular type of this `PyType`.

Access	Constructor and Description
private	PyType() Partially construct a `type` object for `type`, and by side-effect the type object of its base `object`.
private	PyType(PyType.Spec specification for the type spec) Partially construct a type from a type specification.

Method Summary

Modifier and Type	Method and Description
protected void	__delattr__(String of the attribute name) `Slot#op_delattr` has signature `Signature#DELATTR` and provides attribute deletion on this type object.
protected Object	Returns: attribute value __getattribute__(String of the attribute name) `Slot#op_getattribute` has signature `Signature#GETATTR` and provides attribute read access on this type object and its metatype.
protected Object	__repr__()
protected void	__setattr__(String of the attribute name, Object to give the attribute value) `Slot#op_setattr` has signature `Signature#SETATTR` and provides attribute write access on this type object.
private void	addDefinitions(PyType.Spec to apply spec) Add methods, get-sets, members and special functions as attributes to this type, as discovered through the specification.
private static PyType	Returns: the acceptable base bestBase(PyType[] sub-classed by the new type bases) Given the bases of a new class, choose the `type` on which a sub-class should be implemented.
pack-priv boolean	Returns: `true` iff `o` is of a sub-type of this type check(Object object to test o) `true` iff the type of `o` is a Python sub-type of `this` (including exactly `this` type).
public boolean	Returns: `true` iff `o` is exactly of this type checkExact(Object object to test o) `true` iff the Python type of `o` is exactly `this`, not a Python sub-type of `this`, nor just any Java sub-class of `PyType`.
private void	deduceFlags() The `flags` field caches many characteristics of the type that we need to consult: we deduce them here.
private void	defineOperations(PyType.Spec spec) Define the Operations objects for this type, posting them to the registry.
private void	fillDictionary(PyType.Spec to apply spec) Load the dictionary of this type with attributes discovered through the specification.
pack-priv static PyType	Returns: the Python type of `klass` fromClass(Class<?> to inspect klass) Hides org.python.core.Operations.fromClass. Get the Python type corresponding to the given Java class.
public static PyType	Returns: the constructed `PyType` fromSpec(PyType.Spec specification spec) Construct a type from the given specification.
pack-priv PyType	Returns: the base (core use only). getBase() Get the `__base__` of this type.
pack-priv PyType[]	Returns: the bases as an array (core use only). getBases()
public final Map<Object, Object>	getDict() Implements org.python.core.DictPyObject.getDict. The dictionary of a `type` in a read-only view.
pack-priv static Object	getDocFromInternalDoc(String name, String doc)
pack-priv Class<?>	getJavaClass() Implements abstract org.python.core.Operations.getJavaClass. Get the (canonical) Java implementation class of this `PyType` object.
pack-priv PyType[]	Returns: the MRO as an array (core use only). getMRO()
public String	Returns: name of this type getName() The name of this type.
pack-priv static Object	getTextSignatureFromInternalDoc(String name, String doc)
public PyType	getType() Implements org.python.core.CraftedPyObject.getType. The Python `type` of this object.
pack-priv final boolean	Returns: whether a descriptor hasGenericGetAttr() Return whether this type uses object.__getattribute__ from .
pack-priv int	Returns: its index or -1 indexAccepted(Class<?> a class matching one of the accepted classes c) Find the index of the given class in the accepted classes for this type.
pack-priv int	Returns: its index or -1 indexOperand(Class<?> a class matching one of the operand classes c) Find the index of the given class in the known operand classes for this type.
pack-priv final boolean	Returns: whether a data descriptor isDataDescr() Overrides org.python.core.Operations.isDataDescr. Return whether an instance of this type is a data descriptor (defines `__get__` and at least one of `__set__` or `__delete__`.
pack-priv final boolean	Returns: whether a descriptor isDescr() Return whether an instance of this type is a descriptor (defines `__get__`).
private static boolean	isDunderName(String n) A name has the form __A__ where A is one or more characters.
pack-priv final boolean	Returns: whether a method descriptor isMethodDescr() Overrides org.python.core.Operations.isMethodDescr. Return whether an instance of this type defines `__get__` participates in the optimised call pattern supported by `Opcode311#LOAD_METHOD`.
pack-priv final boolean	Returns: whether a data descriptor isMutable() Return whether special methods in this type may be assigned new meanings after type creation (or may be safely cached).
pack-priv boolean	Returns: `true` if `this` is a sub-type of `b` isSubTypeOf(PyType to test b) Determine if this type is a Python sub-type of `b` (if `b` is on the MRO of this type).
pack-priv Object	Returns: dictionary entry or null lookup(String to look up, must be exactly a `str` name) Look for a name, returning the entry directly from the first dictionary along the MRO containing key `name`.
pack-priv Object	Returns: dictionary entry or null lookup(PyUnicode to look up, must be exactly a `str` name) Equivalent to `lookup(String)`, accepting `PyUnicode`.
public static PyType	Returns: the Python type of `obj` of(Object to inspect obj) Hides org.python.core.Operations.of. Get the Python type of the given object `obj`.
private void	setAllSlots() Set all the slots (`op_*`) from the entries in the dictionaries of this type and its bases.
private void	setBases(PyType[] to set bases) Set `bases` and deduce `base`.
private void	setMROfromBases() Set the MRO, but at present only single base.
public String	toString() Overrides java.lang.Object.toString. Returns a string representation of the object.
pack-priv PyType	type(Object subject of the enquiry x) Implements abstract org.python.core.Operations.type. Get the Python type of the object given that this is the operations object for it.
private boolean	Returns: `true` if `this` is a sub-type of `b` type_is_subtype_base_chain(PyType to test b) Determine if this type is a Python sub-type of `b` by chaining through the `base` property.
pack-priv PyType	uniqueType() Implements abstract org.python.core.Operations.uniqueType. Get the unique Python type for which this is operations object.
protected void	updateAfterSetAttr(String of the attribute modified name) Called from `__setattr__(String, Object)` after an attribute has been set or deleted.

Inherited from org.python.core.Operations:: getIndex isIntExact register register

public Class PyType

Nested and Inner Type Summary

Field Summary

Constructor Summary

Method Summary