rustpython_vm/builtins/
traceback.rs

1use rustpython_common::lock::PyMutex;
2
3use super::PyType;
4use crate::{
5    class::PyClassImpl, frame::FrameRef, source_code::LineNumber, Context, Py, PyPayload, PyRef,
6};
7
8#[pyclass(module = false, name = "traceback", traverse)]
9#[derive(Debug)]
10pub struct PyTraceback {
11    pub next: PyMutex<Option<PyTracebackRef>>,
12    pub frame: FrameRef,
13    #[pytraverse(skip)]
14    pub lasti: u32,
15    #[pytraverse(skip)]
16    pub lineno: LineNumber,
17}
18
19pub type PyTracebackRef = PyRef<PyTraceback>;
20
21impl PyPayload for PyTraceback {
22    fn class(ctx: &Context) -> &'static Py<PyType> {
23        ctx.types.traceback_type
24    }
25}
26
27#[pyclass]
28impl PyTraceback {
29    pub fn new(next: Option<PyRef<Self>>, frame: FrameRef, lasti: u32, lineno: LineNumber) -> Self {
30        PyTraceback {
31            next: PyMutex::new(next),
32            frame,
33            lasti,
34            lineno,
35        }
36    }
37
38    #[pygetset]
39    fn tb_frame(&self) -> FrameRef {
40        self.frame.clone()
41    }
42
43    #[pygetset]
44    fn tb_lasti(&self) -> u32 {
45        self.lasti
46    }
47
48    #[pygetset]
49    fn tb_lineno(&self) -> usize {
50        self.lineno.to_usize()
51    }
52
53    #[pygetset]
54    fn tb_next(&self) -> Option<PyRef<Self>> {
55        self.next.lock().as_ref().cloned()
56    }
57
58    #[pygetset(setter)]
59    fn set_tb_next(&self, value: Option<PyRef<Self>>) {
60        *self.next.lock() = value;
61    }
62}
63
64impl PyTracebackRef {
65    pub fn iter(&self) -> impl Iterator<Item = PyTracebackRef> {
66        std::iter::successors(Some(self.clone()), |tb| tb.next.lock().clone())
67    }
68}
69
70pub fn init(context: &Context) {
71    PyTraceback::extend_class(context, context.types.traceback_type);
72}
73
74#[cfg(feature = "serde")]
75impl serde::Serialize for PyTraceback {
76    fn serialize<S: serde::Serializer>(&self, s: S) -> Result<S::Ok, S::Error> {
77        use serde::ser::SerializeStruct;
78
79        let mut struc = s.serialize_struct("PyTraceback", 3)?;
80        struc.serialize_field("name", self.frame.code.obj_name.as_str())?;
81        struc.serialize_field("lineno", &self.lineno.get())?;
82        struc.serialize_field("filename", self.frame.code.source_path.as_str())?;
83        struc.end()
84    }
85}
rustpython_vm/builtins/traceback.rs

rustpython_vm/builtins/
traceback.rs
