Skip to content

Add empty tuple optimization #1178

New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Merged
windelbouwman merged 2 commits into from
Jul 25, 2019
Merged

Add empty tuple optimization #1178

Changes from 1 commit
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
8926c8f
Add empty tuple optimization
coolreader18 Jul 25, 2019
8aee745
Add test snippet for empty tuple
coolreader18 Jul 25, 2019
File filter

Filter by extension

Filter by extension
Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
Next Next commit
Add empty tuple optimization
  • Loading branch information
@coolreader18
coolreader18 committed Jul 25, 2019
commit 8926c8f1ceadf54c32caf59f90a89a9b8e073ed8
11 changes: 10 additions & 1 deletion vm/src/pyobject.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -146,6 +146,7 @@ pub struct PyContext {
pub none: PyNoneRef,
pub ellipsis: PyEllipsisRef,
pub not_implemented: PyNotImplementedRef,
pub empty_tuple: PyTupleRef,
pub tuple_type: PyClassRef,
pub tupleiterator_type: PyClassRef,
pub set_type: PyClassRef,
Expand Down Expand Up @@ -324,6 +325,9 @@ impl PyContext {

let true_value = create_object(PyInt::new(BigInt::one()), &bool_type);
let false_value = create_object(PyInt::new(BigInt::zero()), &bool_type);

let empty_tuple = create_object(PyTuple::from(vec![]), &tuple_type);

let context = PyContext {
bool_type,
memoryview_type,
Expand Down Expand Up @@ -382,6 +386,7 @@ impl PyContext {
weakproxy_type,
type_type,
exceptions,
empty_tuple,
};
objtype::init(&context);
objlist::init(&context);
Expand Down Expand Up @@ -645,7 +650,11 @@ impl PyContext {
}

pub fn new_tuple(&self, elements: Vec<PyObjectRef>) -> PyObjectRef {
PyObject::new(PyTuple::from(elements), self.tuple_type(), None)
if elements.is_empty() {
self.empty_tuple.clone().into_object()
} else {
PyObject::new(PyTuple::from(elements), self.tuple_type(), None)
}
}

pub fn new_list(&self, elements: Vec<PyObjectRef>) -> PyObjectRef {
Expand Down