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Copy pathslot.rs
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Copy pathslot.rs
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1369 lines (1245 loc) · 44.1 KB
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use crate::{
AsObject, Py, PyObject, PyObjectRef, PyPayload, PyRef, PyResult, VirtualMachine,
builtins::{PyInt, PyStr, PyStrInterned, PyStrRef, PyType, PyTypeRef, type_::PointerSlot},
bytecode::ComparisonOperator,
common::hash::PyHash,
convert::{ToPyObject, ToPyResult},
function::{
Either, FromArgs, FuncArgs, OptionalArg, PyComparisonValue, PyMethodDef, PySetterValue,
},
identifier,
protocol::{
PyBuffer, PyIterReturn, PyMapping, PyMappingMethods, PyNumber, PyNumberMethods,
PyNumberSlots, PySequence, PySequenceMethods,
},
vm::Context,
};
use crossbeam_utils::atomic::AtomicCell;
use malachite_bigint::BigInt;
use num_traits::{Signed, ToPrimitive};
use std::{borrow::Borrow, cmp::Ordering, ops::Deref};
#[macro_export]
macro_rules! atomic_func {
($x:expr) => {
crossbeam_utils::atomic::AtomicCell::new(Some($x))
};
}
// The corresponding field in CPython is `tp_` prefixed.
// e.g. name -> tp_name
#[derive(Default)]
#[non_exhaustive]
pub struct PyTypeSlots {
/// # Safety
/// For static types, always safe.
/// For heap types, `__name__` must alive
pub(crate) name: &'static str, // tp_name with <module>.<class> for print, not class name
pub basicsize: usize,
// tp_itemsize
// Methods to implement standard operations
// Method suites for standard classes
pub as_number: PyNumberSlots,
pub as_sequence: AtomicCell<Option<PointerSlot<PySequenceMethods>>>,
pub as_mapping: AtomicCell<Option<PointerSlot<PyMappingMethods>>>,
// More standard operations (here for binary compatibility)
pub hash: AtomicCell<Option<HashFunc>>,
pub call: AtomicCell<Option<GenericMethod>>,
// tp_str
pub repr: AtomicCell<Option<StringifyFunc>>,
pub getattro: AtomicCell<Option<GetattroFunc>>,
pub setattro: AtomicCell<Option<SetattroFunc>>,
// Functions to access object as input/output buffer
pub as_buffer: Option<AsBufferFunc>,
// Assigned meaning in release 2.1
// rich comparisons
pub richcompare: AtomicCell<Option<RichCompareFunc>>,
// Iterators
pub iter: AtomicCell<Option<IterFunc>>,
pub iternext: AtomicCell<Option<IterNextFunc>>,
pub methods: &'static [PyMethodDef],
// Flags to define presence of optional/expanded features
pub flags: PyTypeFlags,
// tp_doc
pub doc: Option<&'static str>,
// Strong reference on a heap type, borrowed reference on a static type
// tp_base
// tp_dict
pub descr_get: AtomicCell<Option<DescrGetFunc>>,
pub descr_set: AtomicCell<Option<DescrSetFunc>>,
// tp_dictoffset
pub init: AtomicCell<Option<InitFunc>>,
// tp_alloc
pub new: AtomicCell<Option<NewFunc>>,
// tp_free
// tp_is_gc
// tp_bases
// tp_mro
// tp_cache
// tp_subclasses
// tp_weaklist
pub del: AtomicCell<Option<DelFunc>>,
// The count of tp_members.
pub member_count: usize,
}
impl PyTypeSlots {
pub fn new(name: &'static str, flags: PyTypeFlags) -> Self {
Self {
name,
flags,
..Default::default()
}
}
pub fn heap_default() -> Self {
Self {
// init: AtomicCell::new(Some(init_wrapper)),
..Default::default()
}
}
}
impl std::fmt::Debug for PyTypeSlots {
fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
f.write_str("PyTypeSlots")
}
}
bitflags! {
#[derive(Copy, Clone, Debug, PartialEq)]
#[non_exhaustive]
pub struct PyTypeFlags: u64 {
const MANAGED_DICT = 1 << 4;
const IMMUTABLETYPE = 1 << 8;
const HEAPTYPE = 1 << 9;
const BASETYPE = 1 << 10;
const METHOD_DESCRIPTOR = 1 << 17;
const HAS_DICT = 1 << 40;
#[cfg(debug_assertions)]
const _CREATED_WITH_FLAGS = 1 << 63;
}
}
impl PyTypeFlags {
// Default used for both built-in and normal classes: empty, for now.
// CPython default: Py_TPFLAGS_HAVE_STACKLESS_EXTENSION | Py_TPFLAGS_HAVE_VERSION_TAG
pub const DEFAULT: Self = Self::empty();
// CPython: See initialization of flags in type_new.
/// Used for types created in Python. Subclassable and are a
/// heaptype.
pub const fn heap_type_flags() -> Self {
match Self::from_bits(Self::DEFAULT.bits() | Self::HEAPTYPE.bits() | Self::BASETYPE.bits())
{
Some(flags) => flags,
None => unreachable!(),
}
}
pub const fn has_feature(self, flag: Self) -> bool {
self.contains(flag)
}
#[cfg(debug_assertions)]
pub const fn is_created_with_flags(self) -> bool {
self.contains(Self::_CREATED_WITH_FLAGS)
}
}
impl Default for PyTypeFlags {
fn default() -> Self {
Self::DEFAULT
}
}
pub(crate) type GenericMethod = fn(&PyObject, FuncArgs, &VirtualMachine) -> PyResult;
pub(crate) type HashFunc = fn(&PyObject, &VirtualMachine) -> PyResult<PyHash>;
// CallFunc = GenericMethod
pub(crate) type StringifyFunc = fn(&PyObject, &VirtualMachine) -> PyResult<PyRef<PyStr>>;
pub(crate) type GetattroFunc = fn(&PyObject, &Py<PyStr>, &VirtualMachine) -> PyResult;
pub(crate) type SetattroFunc =
fn(&PyObject, &Py<PyStr>, PySetterValue, &VirtualMachine) -> PyResult<()>;
pub(crate) type AsBufferFunc = fn(&PyObject, &VirtualMachine) -> PyResult<PyBuffer>;
pub(crate) type RichCompareFunc = fn(
&PyObject,
&PyObject,
PyComparisonOp,
&VirtualMachine,
) -> PyResult<Either<PyObjectRef, PyComparisonValue>>;
pub(crate) type IterFunc = fn(PyObjectRef, &VirtualMachine) -> PyResult;
pub(crate) type IterNextFunc = fn(&PyObject, &VirtualMachine) -> PyResult<PyIterReturn>;
pub(crate) type DescrGetFunc =
fn(PyObjectRef, Option<PyObjectRef>, Option<PyObjectRef>, &VirtualMachine) -> PyResult;
pub(crate) type DescrSetFunc =
fn(&PyObject, PyObjectRef, PySetterValue, &VirtualMachine) -> PyResult<()>;
pub(crate) type NewFunc = fn(PyTypeRef, FuncArgs, &VirtualMachine) -> PyResult;
pub(crate) type InitFunc = fn(PyObjectRef, FuncArgs, &VirtualMachine) -> PyResult<()>;
pub(crate) type DelFunc = fn(&PyObject, &VirtualMachine) -> PyResult<()>;
// slot_sq_length
pub(crate) fn len_wrapper(obj: &PyObject, vm: &VirtualMachine) -> PyResult<usize> {
let ret = vm.call_special_method(obj, identifier!(vm, __len__), ())?;
let len = ret.downcast_ref::<PyInt>().ok_or_else(|| {
vm.new_type_error(format!(
"'{}' object cannot be interpreted as an integer",
ret.class()
))
})?;
let len = len.as_bigint();
if len.is_negative() {
return Err(vm.new_value_error("__len__() should return >= 0"));
}
let len = len
.to_isize()
.ok_or_else(|| vm.new_overflow_error("cannot fit 'int' into an index-sized integer"))?;
Ok(len as usize)
}
pub(crate) fn contains_wrapper(
obj: &PyObject,
needle: &PyObject,
vm: &VirtualMachine,
) -> PyResult<bool> {
let ret = vm.call_special_method(obj, identifier!(vm, __contains__), (needle,))?;
ret.try_to_bool(vm)
}
macro_rules! number_unary_op_wrapper {
($name:ident) => {
|a, vm| vm.call_special_method(a.deref(), identifier!(vm, $name), ())
};
}
macro_rules! number_binary_op_wrapper {
($name:ident) => {
|a, b, vm| vm.call_special_method(a, identifier!(vm, $name), (b.to_owned(),))
};
}
macro_rules! number_binary_right_op_wrapper {
($name:ident) => {
|a, b, vm| vm.call_special_method(b, identifier!(vm, $name), (a.to_owned(),))
};
}
fn getitem_wrapper<K: ToPyObject>(obj: &PyObject, needle: K, vm: &VirtualMachine) -> PyResult {
vm.call_special_method(obj, identifier!(vm, __getitem__), (needle,))
}
fn setitem_wrapper<K: ToPyObject>(
obj: &PyObject,
needle: K,
value: Option<PyObjectRef>,
vm: &VirtualMachine,
) -> PyResult<()> {
match value {
Some(value) => vm.call_special_method(obj, identifier!(vm, __setitem__), (needle, value)),
None => vm.call_special_method(obj, identifier!(vm, __delitem__), (needle,)),
}
.map(drop)
}
fn repr_wrapper(zelf: &PyObject, vm: &VirtualMachine) -> PyResult<PyRef<PyStr>> {
let ret = vm.call_special_method(zelf, identifier!(vm, __repr__), ())?;
ret.downcast::<PyStr>().map_err(|obj| {
vm.new_type_error(format!(
"__repr__ returned non-string (type {})",
obj.class()
))
})
}
fn hash_wrapper(zelf: &PyObject, vm: &VirtualMachine) -> PyResult<PyHash> {
let hash_obj = vm.call_special_method(zelf, identifier!(vm, __hash__), ())?;
let py_int = hash_obj
.downcast_ref::<PyInt>()
.ok_or_else(|| vm.new_type_error("__hash__ method should return an integer"))?;
let big_int = py_int.as_bigint();
let hash: PyHash = big_int
.to_i64()
.unwrap_or_else(|| (big_int % BigInt::from(u64::MAX)).to_i64().unwrap());
Ok(hash)
}
/// Marks a type as unhashable. Similar to PyObject_HashNotImplemented in CPython
pub fn hash_not_implemented(zelf: &PyObject, vm: &VirtualMachine) -> PyResult<PyHash> {
Err(vm.new_type_error(format!("unhashable type: {}", zelf.class().name())))
}
fn call_wrapper(zelf: &PyObject, args: FuncArgs, vm: &VirtualMachine) -> PyResult {
vm.call_special_method(zelf, identifier!(vm, __call__), args)
}
fn getattro_wrapper(zelf: &PyObject, name: &Py<PyStr>, vm: &VirtualMachine) -> PyResult {
let __getattribute__ = identifier!(vm, __getattribute__);
let __getattr__ = identifier!(vm, __getattr__);
match vm.call_special_method(zelf, __getattribute__, (name.to_owned(),)) {
Ok(r) => Ok(r),
Err(e)
if e.fast_isinstance(vm.ctx.exceptions.attribute_error)
&& zelf.class().has_attr(__getattr__) =>
{
vm.call_special_method(zelf, __getattr__, (name.to_owned(),))
}
Err(e) => Err(e),
}
}
fn setattro_wrapper(
zelf: &PyObject,
name: &Py<PyStr>,
value: PySetterValue,
vm: &VirtualMachine,
) -> PyResult<()> {
let name = name.to_owned();
match value {
PySetterValue::Assign(value) => {
vm.call_special_method(zelf, identifier!(vm, __setattr__), (name, value))?;
}
PySetterValue::Delete => {
vm.call_special_method(zelf, identifier!(vm, __delattr__), (name,))?;
}
};
Ok(())
}
pub(crate) fn richcompare_wrapper(
zelf: &PyObject,
other: &PyObject,
op: PyComparisonOp,
vm: &VirtualMachine,
) -> PyResult<Either<PyObjectRef, PyComparisonValue>> {
vm.call_special_method(zelf, op.method_name(&vm.ctx), (other.to_owned(),))
.map(Either::A)
}
fn iter_wrapper(zelf: PyObjectRef, vm: &VirtualMachine) -> PyResult {
vm.call_special_method(&zelf, identifier!(vm, __iter__), ())
}
// PyObject_SelfIter in CPython
const fn self_iter(zelf: PyObjectRef, _vm: &VirtualMachine) -> PyResult {
Ok(zelf)
}
fn iternext_wrapper(zelf: &PyObject, vm: &VirtualMachine) -> PyResult<PyIterReturn> {
PyIterReturn::from_pyresult(
vm.call_special_method(zelf, identifier!(vm, __next__), ()),
vm,
)
}
fn descr_get_wrapper(
zelf: PyObjectRef,
obj: Option<PyObjectRef>,
cls: Option<PyObjectRef>,
vm: &VirtualMachine,
) -> PyResult {
vm.call_special_method(&zelf, identifier!(vm, __get__), (obj, cls))
}
fn descr_set_wrapper(
zelf: &PyObject,
obj: PyObjectRef,
value: PySetterValue,
vm: &VirtualMachine,
) -> PyResult<()> {
match value {
PySetterValue::Assign(val) => {
vm.call_special_method(zelf, identifier!(vm, __set__), (obj, val))
}
PySetterValue::Delete => vm.call_special_method(zelf, identifier!(vm, __delete__), (obj,)),
}
.map(drop)
}
fn init_wrapper(obj: PyObjectRef, args: FuncArgs, vm: &VirtualMachine) -> PyResult<()> {
let res = vm.call_special_method(&obj, identifier!(vm, __init__), args)?;
if !vm.is_none(&res) {
return Err(vm.new_type_error("__init__ must return None"));
}
Ok(())
}
pub(crate) fn new_wrapper(cls: PyTypeRef, mut args: FuncArgs, vm: &VirtualMachine) -> PyResult {
let new = cls.get_attr(identifier!(vm, __new__)).unwrap();
args.prepend_arg(cls.into());
new.call(args, vm)
}
fn del_wrapper(zelf: &PyObject, vm: &VirtualMachine) -> PyResult<()> {
vm.call_special_method(zelf, identifier!(vm, __del__), ())?;
Ok(())
}
impl PyType {
pub(crate) fn update_slot<const ADD: bool>(&self, name: &'static PyStrInterned, ctx: &Context) {
debug_assert!(name.as_str().starts_with("__"));
debug_assert!(name.as_str().ends_with("__"));
macro_rules! toggle_slot {
($name:ident, $func:expr) => {{
self.slots.$name.store(if ADD { Some($func) } else { None });
}};
}
macro_rules! toggle_sub_slot {
($group:ident, $name:ident, $func:expr) => {
self.slots
.$group
.$name
.store(if ADD { Some($func) } else { None });
};
}
macro_rules! update_slot {
($name:ident, $func:expr) => {{
self.slots.$name.store(Some($func));
}};
}
macro_rules! update_pointer_slot {
($name:ident, $pointed:ident) => {{
self.slots
.$name
.store(unsafe { PointerSlot::from_heaptype(self, |ext| &ext.$pointed) });
}};
}
macro_rules! toggle_ext_func {
($n1:ident, $n2:ident, $func:expr) => {{
self.heaptype_ext.as_ref().unwrap().$n1.$n2.store(if ADD {
Some($func)
} else {
None
});
}};
}
match name {
_ if name == identifier!(ctx, __len__) => {
// update_slot!(as_mapping, slot_as_mapping);
toggle_ext_func!(sequence_methods, length, |seq, vm| len_wrapper(seq.obj, vm));
update_pointer_slot!(as_sequence, sequence_methods);
toggle_ext_func!(mapping_methods, length, |mapping, vm| len_wrapper(
mapping.obj,
vm
));
update_pointer_slot!(as_mapping, mapping_methods);
}
_ if name == identifier!(ctx, __getitem__) => {
// update_slot!(as_mapping, slot_as_mapping);
toggle_ext_func!(sequence_methods, item, |seq, i, vm| getitem_wrapper(
seq.obj, i, vm
));
update_pointer_slot!(as_sequence, sequence_methods);
toggle_ext_func!(mapping_methods, subscript, |mapping, key, vm| {
getitem_wrapper(mapping.obj, key, vm)
});
update_pointer_slot!(as_mapping, mapping_methods);
}
_ if name == identifier!(ctx, __setitem__) || name == identifier!(ctx, __delitem__) => {
// update_slot!(as_mapping, slot_as_mapping);
toggle_ext_func!(sequence_methods, ass_item, |seq, i, value, vm| {
setitem_wrapper(seq.obj, i, value, vm)
});
update_pointer_slot!(as_sequence, sequence_methods);
toggle_ext_func!(mapping_methods, ass_subscript, |mapping, key, value, vm| {
setitem_wrapper(mapping.obj, key, value, vm)
});
update_pointer_slot!(as_mapping, mapping_methods);
}
_ if name == identifier!(ctx, __contains__) => {
toggle_ext_func!(sequence_methods, contains, |seq, needle, vm| {
contains_wrapper(seq.obj, needle, vm)
});
update_pointer_slot!(as_sequence, sequence_methods);
}
_ if name == identifier!(ctx, __repr__) => {
update_slot!(repr, repr_wrapper);
}
_ if name == identifier!(ctx, __hash__) => {
let is_unhashable = self
.attributes
.read()
.get(identifier!(ctx, __hash__))
.is_some_and(|a| a.is(&ctx.none));
let wrapper = if is_unhashable {
hash_not_implemented
} else {
hash_wrapper
};
toggle_slot!(hash, wrapper);
}
_ if name == identifier!(ctx, __call__) => {
toggle_slot!(call, call_wrapper);
}
_ if name == identifier!(ctx, __getattr__)
|| name == identifier!(ctx, __getattribute__) =>
{
update_slot!(getattro, getattro_wrapper);
}
_ if name == identifier!(ctx, __setattr__) || name == identifier!(ctx, __delattr__) => {
update_slot!(setattro, setattro_wrapper);
}
_ if name == identifier!(ctx, __eq__)
|| name == identifier!(ctx, __ne__)
|| name == identifier!(ctx, __le__)
|| name == identifier!(ctx, __lt__)
|| name == identifier!(ctx, __ge__)
|| name == identifier!(ctx, __gt__) =>
{
update_slot!(richcompare, richcompare_wrapper);
}
_ if name == identifier!(ctx, __iter__) => {
toggle_slot!(iter, iter_wrapper);
}
_ if name == identifier!(ctx, __next__) => {
toggle_slot!(iternext, iternext_wrapper);
}
_ if name == identifier!(ctx, __get__) => {
toggle_slot!(descr_get, descr_get_wrapper);
}
_ if name == identifier!(ctx, __set__) || name == identifier!(ctx, __delete__) => {
update_slot!(descr_set, descr_set_wrapper);
}
_ if name == identifier!(ctx, __init__) => {
toggle_slot!(init, init_wrapper);
}
_ if name == identifier!(ctx, __new__) => {
toggle_slot!(new, new_wrapper);
}
_ if name == identifier!(ctx, __del__) => {
toggle_slot!(del, del_wrapper);
}
_ if name == identifier!(ctx, __int__) => {
toggle_sub_slot!(as_number, int, number_unary_op_wrapper!(__int__));
}
_ if name == identifier!(ctx, __index__) => {
toggle_sub_slot!(as_number, index, number_unary_op_wrapper!(__index__));
}
_ if name == identifier!(ctx, __float__) => {
toggle_sub_slot!(as_number, float, number_unary_op_wrapper!(__float__));
}
_ if name == identifier!(ctx, __add__) => {
toggle_sub_slot!(as_number, add, number_binary_op_wrapper!(__add__));
}
_ if name == identifier!(ctx, __radd__) => {
toggle_sub_slot!(
as_number,
right_add,
number_binary_right_op_wrapper!(__radd__)
);
}
_ if name == identifier!(ctx, __iadd__) => {
toggle_sub_slot!(as_number, inplace_add, number_binary_op_wrapper!(__iadd__));
}
_ if name == identifier!(ctx, __sub__) => {
toggle_sub_slot!(as_number, subtract, number_binary_op_wrapper!(__sub__));
}
_ if name == identifier!(ctx, __rsub__) => {
toggle_sub_slot!(
as_number,
right_subtract,
number_binary_right_op_wrapper!(__rsub__)
);
}
_ if name == identifier!(ctx, __isub__) => {
toggle_sub_slot!(
as_number,
inplace_subtract,
number_binary_op_wrapper!(__isub__)
);
}
_ if name == identifier!(ctx, __mul__) => {
toggle_sub_slot!(as_number, multiply, number_binary_op_wrapper!(__mul__));
}
_ if name == identifier!(ctx, __rmul__) => {
toggle_sub_slot!(
as_number,
right_multiply,
number_binary_right_op_wrapper!(__rmul__)
);
}
_ if name == identifier!(ctx, __imul__) => {
toggle_sub_slot!(
as_number,
inplace_multiply,
number_binary_op_wrapper!(__imul__)
);
}
_ if name == identifier!(ctx, __mod__) => {
toggle_sub_slot!(as_number, remainder, number_binary_op_wrapper!(__mod__));
}
_ if name == identifier!(ctx, __rmod__) => {
toggle_sub_slot!(
as_number,
right_remainder,
number_binary_right_op_wrapper!(__rmod__)
);
}
_ if name == identifier!(ctx, __imod__) => {
toggle_sub_slot!(
as_number,
inplace_remainder,
number_binary_op_wrapper!(__imod__)
);
}
_ if name == identifier!(ctx, __divmod__) => {
toggle_sub_slot!(as_number, divmod, number_binary_op_wrapper!(__divmod__));
}
_ if name == identifier!(ctx, __rdivmod__) => {
toggle_sub_slot!(
as_number,
right_divmod,
number_binary_right_op_wrapper!(__rdivmod__)
);
}
_ if name == identifier!(ctx, __pow__) => {
toggle_sub_slot!(as_number, power, |a, b, c, vm| {
let args = if vm.is_none(c) {
vec![b.to_owned()]
} else {
vec![b.to_owned(), c.to_owned()]
};
vm.call_special_method(a, identifier!(vm, __pow__), args)
});
}
_ if name == identifier!(ctx, __rpow__) => {
toggle_sub_slot!(as_number, right_power, |a, b, c, vm| {
let args = if vm.is_none(c) {
vec![a.to_owned()]
} else {
vec![a.to_owned(), c.to_owned()]
};
vm.call_special_method(b, identifier!(vm, __rpow__), args)
});
}
_ if name == identifier!(ctx, __ipow__) => {
toggle_sub_slot!(as_number, inplace_power, |a, b, _, vm| {
vm.call_special_method(a, identifier!(vm, __ipow__), (b.to_owned(),))
});
}
_ if name == identifier!(ctx, __lshift__) => {
toggle_sub_slot!(as_number, lshift, number_binary_op_wrapper!(__lshift__));
}
_ if name == identifier!(ctx, __rlshift__) => {
toggle_sub_slot!(
as_number,
right_lshift,
number_binary_right_op_wrapper!(__rlshift__)
);
}
_ if name == identifier!(ctx, __ilshift__) => {
toggle_sub_slot!(
as_number,
inplace_lshift,
number_binary_op_wrapper!(__ilshift__)
);
}
_ if name == identifier!(ctx, __rshift__) => {
toggle_sub_slot!(as_number, rshift, number_binary_op_wrapper!(__rshift__));
}
_ if name == identifier!(ctx, __rrshift__) => {
toggle_sub_slot!(
as_number,
right_rshift,
number_binary_right_op_wrapper!(__rrshift__)
);
}
_ if name == identifier!(ctx, __irshift__) => {
toggle_sub_slot!(
as_number,
inplace_rshift,
number_binary_op_wrapper!(__irshift__)
);
}
_ if name == identifier!(ctx, __and__) => {
toggle_sub_slot!(as_number, and, number_binary_op_wrapper!(__and__));
}
_ if name == identifier!(ctx, __rand__) => {
toggle_sub_slot!(
as_number,
right_and,
number_binary_right_op_wrapper!(__rand__)
);
}
_ if name == identifier!(ctx, __iand__) => {
toggle_sub_slot!(as_number, inplace_and, number_binary_op_wrapper!(__iand__));
}
_ if name == identifier!(ctx, __xor__) => {
toggle_sub_slot!(as_number, xor, number_binary_op_wrapper!(__xor__));
}
_ if name == identifier!(ctx, __rxor__) => {
toggle_sub_slot!(
as_number,
right_xor,
number_binary_right_op_wrapper!(__rxor__)
);
}
_ if name == identifier!(ctx, __ixor__) => {
toggle_sub_slot!(as_number, inplace_xor, number_binary_op_wrapper!(__ixor__));
}
_ if name == identifier!(ctx, __or__) => {
toggle_sub_slot!(as_number, or, number_binary_op_wrapper!(__or__));
}
_ if name == identifier!(ctx, __ror__) => {
toggle_sub_slot!(
as_number,
right_or,
number_binary_right_op_wrapper!(__ror__)
);
}
_ if name == identifier!(ctx, __ior__) => {
toggle_sub_slot!(as_number, inplace_or, number_binary_op_wrapper!(__ior__));
}
_ if name == identifier!(ctx, __floordiv__) => {
toggle_sub_slot!(
as_number,
floor_divide,
number_binary_op_wrapper!(__floordiv__)
);
}
_ if name == identifier!(ctx, __rfloordiv__) => {
toggle_sub_slot!(
as_number,
right_floor_divide,
number_binary_right_op_wrapper!(__rfloordiv__)
);
}
_ if name == identifier!(ctx, __ifloordiv__) => {
toggle_sub_slot!(
as_number,
inplace_floor_divide,
number_binary_op_wrapper!(__ifloordiv__)
);
}
_ if name == identifier!(ctx, __truediv__) => {
toggle_sub_slot!(
as_number,
true_divide,
number_binary_op_wrapper!(__truediv__)
);
}
_ if name == identifier!(ctx, __rtruediv__) => {
toggle_sub_slot!(
as_number,
right_true_divide,
number_binary_right_op_wrapper!(__rtruediv__)
);
}
_ if name == identifier!(ctx, __itruediv__) => {
toggle_sub_slot!(
as_number,
inplace_true_divide,
number_binary_op_wrapper!(__itruediv__)
);
}
_ if name == identifier!(ctx, __matmul__) => {
toggle_sub_slot!(
as_number,
matrix_multiply,
number_binary_op_wrapper!(__matmul__)
);
}
_ if name == identifier!(ctx, __rmatmul__) => {
toggle_sub_slot!(
as_number,
right_matrix_multiply,
number_binary_right_op_wrapper!(__rmatmul__)
);
}
_ if name == identifier!(ctx, __imatmul__) => {
toggle_sub_slot!(
as_number,
inplace_matrix_multiply,
number_binary_op_wrapper!(__imatmul__)
);
}
_ => {}
}
}
}
#[pyclass]
pub trait Constructor: PyPayload {
type Args: FromArgs;
#[inline]
#[pyslot]
fn slot_new(cls: PyTypeRef, args: FuncArgs, vm: &VirtualMachine) -> PyResult {
let args: Self::Args = args.bind(vm)?;
Self::py_new(cls, args, vm)
}
fn py_new(cls: PyTypeRef, args: Self::Args, vm: &VirtualMachine) -> PyResult;
}
pub trait DefaultConstructor: PyPayload + Default {
fn construct_and_init(args: Self::Args, vm: &VirtualMachine) -> PyResult<PyRef<Self>>
where
Self: Initializer,
{
let this = Self::default().into_ref(&vm.ctx);
Self::init(this.clone(), args, vm)?;
Ok(this)
}
}
/// For types that cannot be instantiated through Python code.
#[pyclass]
pub trait Unconstructible: PyPayload {
#[pyslot]
fn slot_new(cls: PyTypeRef, _args: FuncArgs, vm: &VirtualMachine) -> PyResult {
Err(vm.new_type_error(format!("cannot create '{}' instances", cls.slot_name())))
}
}
impl<T> Constructor for T
where
T: DefaultConstructor,
{
type Args = FuncArgs;
fn slot_new(cls: PyTypeRef, _args: FuncArgs, vm: &VirtualMachine) -> PyResult {
Self::default().into_ref_with_type(vm, cls).map(Into::into)
}
fn py_new(cls: PyTypeRef, _args: Self::Args, vm: &VirtualMachine) -> PyResult {
Err(vm.new_type_error(format!("cannot create {} instances", cls.slot_name())))
}
}
#[pyclass]
pub trait Initializer: PyPayload {
type Args: FromArgs;
#[pyslot]
#[inline]
fn slot_init(zelf: PyObjectRef, args: FuncArgs, vm: &VirtualMachine) -> PyResult<()> {
let zelf = zelf.try_into_value(vm)?;
let args: Self::Args = args.bind(vm)?;
Self::init(zelf, args, vm)
}
#[pymethod]
#[inline]
fn __init__(zelf: PyRef<Self>, args: Self::Args, vm: &VirtualMachine) -> PyResult<()> {
Self::init(zelf, args, vm)
}
fn init(zelf: PyRef<Self>, args: Self::Args, vm: &VirtualMachine) -> PyResult<()>;
}
#[pyclass]
pub trait Destructor: PyPayload {
#[inline] // for __del__
#[pyslot]
fn slot_del(zelf: &PyObject, vm: &VirtualMachine) -> PyResult<()> {
let zelf = zelf
.downcast_ref()
.ok_or_else(|| vm.new_type_error("unexpected payload for __del__"))?;
Self::del(zelf, vm)
}
#[pymethod]
fn __del__(zelf: PyObjectRef, vm: &VirtualMachine) -> PyResult<()> {
Self::slot_del(&zelf, vm)
}
fn del(zelf: &Py<Self>, vm: &VirtualMachine) -> PyResult<()>;
}
#[pyclass]
pub trait Callable: PyPayload {
type Args: FromArgs;
#[inline]
#[pyslot]
fn slot_call(zelf: &PyObject, args: FuncArgs, vm: &VirtualMachine) -> PyResult {
let zelf = zelf.downcast_ref().ok_or_else(|| {
let repr = zelf.repr(vm);
let help = if let Ok(repr) = repr.as_ref() {
repr.as_str().to_owned()
} else {
zelf.class().name().to_owned()
};
vm.new_type_error(format!("unexpected payload for __call__ of {help}"))
})?;
let args = args.bind(vm)?;
Self::call(zelf, args, vm)
}
#[inline]
#[pymethod]
fn __call__(zelf: PyObjectRef, args: FuncArgs, vm: &VirtualMachine) -> PyResult {
Self::slot_call(&zelf, args.bind(vm)?, vm)
}
fn call(zelf: &Py<Self>, args: Self::Args, vm: &VirtualMachine) -> PyResult;
}
#[pyclass]
pub trait GetDescriptor: PyPayload {
#[pyslot]
fn descr_get(
zelf: PyObjectRef,
obj: Option<PyObjectRef>,
cls: Option<PyObjectRef>,
vm: &VirtualMachine,
) -> PyResult;
#[inline]
#[pymethod]
fn __get__(
zelf: PyObjectRef,
obj: PyObjectRef,
cls: OptionalArg<PyObjectRef>,
vm: &VirtualMachine,
) -> PyResult {
Self::descr_get(zelf, Some(obj), cls.into_option(), vm)
}
#[inline]
fn _as_pyref<'a>(zelf: &'a PyObject, vm: &VirtualMachine) -> PyResult<&'a Py<Self>> {
zelf.try_to_value(vm)
}
#[inline]
fn _unwrap<'a>(
zelf: &'a PyObject,
obj: Option<PyObjectRef>,
vm: &VirtualMachine,
) -> PyResult<(&'a Py<Self>, PyObjectRef)> {
let zelf = Self::_as_pyref(zelf, vm)?;
let obj = vm.unwrap_or_none(obj);
Ok((zelf, obj))
}
#[inline]
fn _check<'a>(
zelf: &'a PyObject,
obj: Option<PyObjectRef>,
vm: &VirtualMachine,
) -> Option<(&'a Py<Self>, PyObjectRef)> {
// CPython descr_check
let obj = obj?;
// if (!PyObject_TypeCheck(obj, descr->d_type)) {
// PyErr_Format(PyExc_TypeError,
// "descriptor '%V' for '%.100s' objects "
// "doesn't apply to a '%.100s' object",
// descr_name((PyDescrObject *)descr), "?",
// descr->d_type->slot_name,
// obj->ob_type->slot_name);
// *pres = NULL;
// return 1;
// } else {
Some((Self::_as_pyref(zelf, vm).unwrap(), obj))
}
#[inline]
fn _cls_is(cls: &Option<PyObjectRef>, other: &impl Borrow<PyObject>) -> bool {
cls.as_ref().is_some_and(|cls| other.borrow().is(cls))
}
}
#[pyclass]
pub trait Hashable: PyPayload {
#[inline]
#[pyslot]
fn slot_hash(zelf: &PyObject, vm: &VirtualMachine) -> PyResult<PyHash> {
let zelf = zelf
.downcast_ref()
.ok_or_else(|| vm.new_type_error("unexpected payload for __hash__"))?;
Self::hash(zelf, vm)
}
#[inline]
#[pymethod]
fn __hash__(zelf: PyObjectRef, vm: &VirtualMachine) -> PyResult<PyHash> {
Self::slot_hash(&zelf, vm)
}
fn hash(zelf: &Py<Self>, vm: &VirtualMachine) -> PyResult<PyHash>;
}
#[pyclass]
pub trait Representable: PyPayload {
#[inline]
#[pyslot]
fn slot_repr(zelf: &PyObject, vm: &VirtualMachine) -> PyResult<PyRef<PyStr>> {
let zelf = zelf
.downcast_ref()
.ok_or_else(|| vm.new_type_error("unexpected payload for __repr__"))?;
Self::repr(zelf, vm)
}
#[inline]
#[pymethod]
fn __repr__(zelf: PyObjectRef, vm: &VirtualMachine) -> PyResult<PyRef<PyStr>> {
Self::slot_repr(&zelf, vm)
}
#[inline]
fn repr(zelf: &Py<Self>, vm: &VirtualMachine) -> PyResult<PyRef<PyStr>> {
let repr = Self::repr_str(zelf, vm)?;
Ok(vm.ctx.new_str(repr))
}
fn repr_str(zelf: &Py<Self>, vm: &VirtualMachine) -> PyResult<String>;
}