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Expand wrap_pyfunction!() to a closure to improve deduction. #1597

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merged 2 commits into from
May 6, 2021
Merged

Expand wrap_pyfunction!() to a closure to improve deduction. #1597

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5289ce0
Expand wrap_pyfunction!() to a closure.
m-ou-se May 6, 2021
d33c501
Add test for wrap_pyfunction!() deduction.
m-ou-se May 6, 2021
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2 changes: 1 addition & 1 deletion src/lib.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -221,7 +221,7 @@ pub mod proc_macro {
#[macro_export]
macro_rules! wrap_pyfunction {
($function_name: ident) => {{
&pyo3::paste::expr! { [<__pyo3_get_function_ $function_name>] }
&|py| pyo3::paste::expr! { [<__pyo3_get_function_ $function_name>] }(py)
}};

($function_name: ident, $arg: expr) => {
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13 changes: 13 additions & 0 deletions tests/test_wrap_pyfunction_deduction.rs
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@@ -0,0 +1,13 @@
use pyo3::{prelude::*, types::PyCFunction, wrap_pyfunction};

#[pyfunction]
fn f() {}

pub fn add_wrapped(wrapper: &impl Fn(Python) -> PyResult<&PyCFunction>) {
let _ = wrapper;
}

#[test]
fn wrap_pyfunction_deduction() {
add_wrapped(wrap_pyfunction!(f));
}