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Implement __init_subclass__ #1357

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dvtkrlbs wants to merge 1 commit into from
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Implement __init_subclass__ #1357

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10 changes: 9 additions & 1 deletion vm/src/builtins.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -17,7 +17,7 @@ use crate::obj::objdict::PyDictRef;
use crate::obj::objint::{self, PyIntRef};
use crate::obj::objiter;
use crate::obj::objstr::{PyString, PyStringRef};
use crate::obj::objtype::{self, PyClassRef};
use crate::obj::objtype::{self, PyClass, PyClassRef};
#[cfg(feature = "rustpython-compiler")]
use rustpython_compiler::compile;

Expand Down Expand Up @@ -944,5 +944,13 @@ pub fn builtin_build_class_(
vec![name_obj, bases, namespace.into_object()],
)?;
cells.set_item("__class__", class.clone(), vm)?;

for base_class in class.clone().downcast::<PyClass>().unwrap().mro.clone() {
if let Ok(initter) = vm.get_attribute(base_class.into_object(), "__init_subclass__") {
let args: Args = Args::new(vec![class.clone()]);
vm.invoke(&initter, PyFuncArgs::from((&args, &kwargs)))?;
break;
}
}
Ok(class)
}
3 changes: 3 additions & 0 deletions vm/src/function.rs
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Expand Up @@ -290,6 +290,9 @@ impl<T> Args<T> {
pub fn into_vec(self) -> Vec<T> {
self.0
}
pub fn new(args: Vec<T>) -> Self {
Self(args)
}
}

impl<T: PyValue> Args<PyRef<T>> {
Expand Down