Skip to content

Ctypes __mul__ #6305

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
youknowone merged 2 commits into from
Nov 28, 2025
Merged

Ctypes __mul__ #6305

Show file tree
Hide file tree
Changes from 1 commit
Commits
Show all changes
2 commits
Select commit Hold shift + click to select a range
5bf671d
Fix mul
youknowone Nov 28, 2025
71410b6
fix mul
youknowone Nov 28, 2025
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
Prev Previous commit
fix mul
  • Loading branch information
@youknowone
youknowone committed Nov 28, 2025
commit 71410b60e4b10017ef74b886e1f7760653fae2fe
14 changes: 12 additions & 2 deletions crates/vm/src/stdlib/ctypes/base.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -244,8 +244,18 @@ impl Constructor for PyCSimple {
let attributes = cls.get_attributes();
let _type_ = attributes
.iter()
.find(|(k, _)| k.to_object().str(vm).unwrap().to_string() == *"_type_")
.unwrap()
.find(|(k, _)| {
k.to_object()
.str(vm)
.map(|s| s.to_string() == "_type_")
.unwrap_or(false)
})
.ok_or_else(|| {
vm.new_type_error(format!(
"cannot create '{}' instances: no _type_ attribute",
cls.name()
))
})?
.1
.str(vm)?
.to_string();
Expand Down
49 changes: 45 additions & 4 deletions crates/vm/src/stdlib/ctypes/pointer.rs
View file
Open in desktop
Original file line number Diff line number Diff line change
@@ -1,8 +1,13 @@
use crossbeam_utils::atomic::AtomicCell;
use num_traits::ToPrimitive;
use rustpython_common::lock::PyRwLock;

use crate::builtins::PyType;
use crate::builtins::{PyType, PyTypeRef};
use crate::convert::ToPyObject;
use crate::protocol::PyNumberMethods;
use crate::stdlib::ctypes::PyCData;
use crate::{PyObjectRef, PyResult};
use crate::types::AsNumber;
use crate::{PyObjectRef, PyResult, VirtualMachine};

#[pyclass(name = "PyCPointerType", base = PyType, module = "_ctypes")]
#[derive(PyPayload, Debug)]
Expand All @@ -11,8 +16,44 @@ pub struct PyCPointerType {
pub(crate) inner: PyCPointer,
}

#[pyclass]
impl PyCPointerType {}
#[pyclass(flags(IMMUTABLETYPE), with(AsNumber))]
impl PyCPointerType {
#[pymethod]
fn __mul__(cls: PyTypeRef, n: isize, vm: &VirtualMachine) -> PyResult {
use super::array::{PyCArray, PyCArrayType};
if n < 0 {
return Err(vm.new_value_error(format!("Array length must be >= 0, not {n}")));
}
Ok(PyCArrayType {
inner: PyCArray {
typ: PyRwLock::new(cls),
length: AtomicCell::new(n as usize),
value: PyRwLock::new(vm.ctx.none()),
},
}
.to_pyobject(vm))
}
}

impl AsNumber for PyCPointerType {
fn as_number() -> &'static PyNumberMethods {
static AS_NUMBER: PyNumberMethods = PyNumberMethods {
multiply: Some(|a, b, vm| {
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()))?;
PyCPointerType::__mul__(cls.to_owned(), n, vm)
}),
..PyNumberMethods::NOT_IMPLEMENTED
};
&AS_NUMBER
}
}

#[pyclass(
name = "_Pointer",
Expand Down
Loading