Method run_code

src/python.rs:281–314

Runs code in the given context. `start` indicates the type of input expected: one of `Py_single_input`, `Py_file_input`, or `Py_eval_input`. If `globals` is `None`, it defaults to Python module `__main__`. If `locals` is `None`, it defaults to the value of `globals`.

(
        self,
        code: &str,
        start: c_int,
        globals: Option<&PyDict>,
        locals: Option<&PyDict>,
    )

    /// If `globals` is `None`, it defaults to Python module `__main__`.
    /// If `locals` is `None`, it defaults to the value of `globals`.
    fn run_code(
        self,
        code: &str,
        start: c_int,
        globals: Option<&PyDict>,
        locals: Option<&PyDict>,
    ) -> PyResult<PyObject> {
        let code = CString::new(code).unwrap();

        unsafe {
            let mptr = ffi::PyImport_AddModule("__main__\0".as_ptr() as *const _);

            if mptr.is_null() {
                return Err(PyErr::fetch(self));
            }

            let mdict = ffi::PyModule_GetDict(mptr);

            let globals = match globals {
                Some(g) => g.as_ptr(),
                None => mdict,
            };

            let locals = match locals {
                Some(l) => l.as_ptr(),
                None => globals,
            };

            let res_ptr =
                ffi::PyRun_StringFlags(code.as_ptr(), start, globals, locals, std::ptr::null_mut());

            err::result_from_owned_ptr(self, res_ptr)
        }
    }

    /// Gets the Python builtin value `None`.
    #[allow(non_snake_case)] // the Python keyword starts with uppercase