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Ctypes __mul__ #6305

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Merged
youknowone merged 2 commits into from
Nov 28, 2025
Merged

Ctypes __mul__ #6305

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5bf671d
Fix mul
youknowone Nov 28, 2025
71410b6
fix mul
youknowone Nov 28, 2025
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Fix mul
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@youknowone
youknowone committed Nov 28, 2025
commit 5bf671da95717b847281b72e1b1a59eedc3b66e3
38 changes: 31 additions & 7 deletions crates/vm/src/stdlib/ctypes/base.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -3,8 +3,9 @@ use crate::builtins::PyType;
use crate::builtins::{PyBytes, PyFloat, PyInt, PyNone, PyStr, PyTypeRef};
use crate::convert::ToPyObject;
use crate::function::{Either, OptionalArg};
use crate::protocol::PyNumberMethods;
use crate::stdlib::ctypes::_ctypes::new_simple_type;
use crate::types::Constructor;
use crate::types::{AsNumber, Constructor};
use crate::{AsObject, Py, PyObjectRef, PyPayload, PyRef, PyResult, TryFromObject, VirtualMachine};
use crossbeam_utils::atomic::AtomicCell;
use num_traits::ToPrimitive;
Expand Down Expand Up @@ -158,9 +159,10 @@ pub struct PyCData {
impl PyCData {}

#[pyclass(module = "_ctypes", name = "PyCSimpleType", base = PyType)]
#[derive(Debug, PyPayload)]
pub struct PyCSimpleType {}

#[pyclass(flags(BASETYPE))]
#[pyclass(flags(BASETYPE), with(AsNumber))]
impl PyCSimpleType {
#[allow(clippy::new_ret_no_self)]
#[pymethod]
Expand All @@ -186,6 +188,33 @@ impl PyCSimpleType {

PyCSimpleType::from_param(cls, as_parameter, vm)
}

#[pymethod]
fn __mul__(cls: PyTypeRef, n: isize, vm: &VirtualMachine) -> PyResult {
PyCSimple::repeat(cls, n, vm)
}
}

impl AsNumber for PyCSimpleType {
fn as_number() -> &'static PyNumberMethods {
static AS_NUMBER: PyNumberMethods = PyNumberMethods {
multiply: Some(|a, b, vm| {
// a is a PyCSimpleType instance (type object like c_char)
// b is int (array size)
let cls = a
.downcast_ref::<PyType>()
.ok_or_else(|| vm.new_type_error("expected type".to_owned()))?;
let n = b
.try_index(vm)?
.as_bigint()
.to_isize()
.ok_or_else(|| vm.new_overflow_error("array size too large".to_owned()))?;
PyCSimple::repeat(cls.to_owned(), n, vm)
}),
..PyNumberMethods::NOT_IMPLEMENTED
};
&AS_NUMBER
}
}

#[pyclass(
Expand Down Expand Up @@ -276,11 +305,6 @@ impl PyCSimple {
}
.to_pyobject(vm))
}

#[pyclassmethod]
fn __mul__(cls: PyTypeRef, n: isize, vm: &VirtualMachine) -> PyResult {
PyCSimple::repeat(cls, n, vm)
}
}

impl PyCSimple {
Expand Down