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Implements Comparable for PyDictKeys, PyDictItems #3366

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Merged
merged 3 commits into from
Oct 27, 2021
Merged

Implements Comparable for PyDictKeys, PyDictItems #3366

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a3fed90
Implements Comparable for PyDictKeys, PyDictItems
zetwhite Oct 23, 2021
a401d8c
make work dictview compare test
zetwhite Oct 24, 2021
f9bb87e
ViewSetOps::cmp
youknowone Oct 27, 2021
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4 changes: 0 additions & 4 deletions Lib/test/test_dictviews.py
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Original file line number Diff line number Diff line change
Expand Up @@ -17,8 +17,6 @@ def test_constructors_not_callable(self):
self.assertRaises(TypeError, vt, {})
self.assertRaises(TypeError, vt)

# TODO: RUSTPYTHON
@unittest.expectedFailure
def test_dict_keys(self):
d = {1: 10, "a": "ABC"}
keys = d.keys()
Expand All @@ -39,8 +37,6 @@ def test_dict_keys(self):
del e["a"]
self.assertNotEqual(d.keys(), e.keys())

# TODO: RUSTPYTHON
@unittest.expectedFailure
def test_dict_items(self):
d = {1: 10, "a": "ABC"}
items = d.items()
Expand Down
79 changes: 50 additions & 29 deletions vm/src/builtins/dict.rs
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Expand Up @@ -746,34 +746,6 @@ macro_rules! dict_view {
}
}

impl Comparable for $name {
fn cmp(
zelf: &PyObjectView<Self>,
other: &PyObject,
op: PyComparisonOp,
vm: &VirtualMachine,
) -> PyResult<PyComparisonValue> {
match_class!(match other {
ref dictview @ Self => {
PyDict::inner_cmp(
&zelf.dict,
&dictview.dict,
op,
!zelf.class().is(&vm.ctx.types.dict_keys_type),
vm,
)
}
ref _set @ PySet => {
// TODO: Implement comparison for set
Ok(NotImplemented)
}
_ => {
Ok(NotImplemented)
}
})
}
}

impl PyValue for $name {
fn class(vm: &VirtualMachine) -> &PyTypeRef {
&vm.ctx.types.$class
Expand Down Expand Up @@ -985,6 +957,33 @@ trait ViewSetOps: DictView {
let inner = zelf.difference(other, vm)?;
Ok(PySet { inner })
}

fn cmp(
zelf: &PyObjectView<Self>,
other: &PyObject,
op: PyComparisonOp,
vm: &VirtualMachine,
) -> PyResult<PyComparisonValue> {
match_class!(match other {
ref dictview @ Self => {
PyDict::inner_cmp(
zelf.dict(),
dictview.dict(),
op,
!zelf.class().is(&vm.ctx.types.dict_keys_type),
vm,
)
}
ref _set @ PySet => {
let inner = Self::to_set(zelf.to_owned(), vm)?;
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I am not sure this line is fine or not.
If you have any idea, please comment

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to_set make copy of all elements. Iterating all elements in zelf and using PySet::contains may make sense like all_contained_in in cpython. Although we dont have PySequence_Contains, we have PySet type we can use it 😊

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Okay. I'll check and fix it. 👍 😄

let zelf_set = PySet { inner }.into_object(vm);
PySet::cmp(zelf_set.downcast_ref().unwrap(), other, op, vm)
}
_ => {
Ok(NotImplemented)
}
})
}
}

impl ViewSetOps for PyDictKeys {}
Expand All @@ -997,6 +996,17 @@ impl PyDictKeys {
}
impl Unconstructible for PyDictKeys {}

impl Comparable for PyDictKeys {
fn cmp(
zelf: &PyObjectView<Self>,
other: &PyObject,
op: PyComparisonOp,
vm: &VirtualMachine,
) -> PyResult<PyComparisonValue> {
ViewSetOps::cmp(zelf, other, op, vm)
}
}

impl ViewSetOps for PyDictItems {}
#[pyimpl(with(DictView, Constructor, Comparable, Iterable, ViewSetOps))]
impl PyDictItems {
Expand All @@ -1022,7 +1032,18 @@ impl PyDictItems {
}
impl Unconstructible for PyDictItems {}

#[pyimpl(with(DictView, Constructor, Comparable, Iterable))]
impl Comparable for PyDictItems {
fn cmp(
zelf: &PyObjectView<Self>,
other: &PyObject,
op: PyComparisonOp,
vm: &VirtualMachine,
) -> PyResult<PyComparisonValue> {
ViewSetOps::cmp(zelf, other, op, vm)
}
}

#[pyimpl(with(DictView, Constructor, Iterable))]
impl PyDictValues {}
impl Unconstructible for PyDictValues {}

Expand Down