62 lines
1.9 KiB
Rust
62 lines
1.9 KiB
Rust
#![feature(proc_macro, specialization, concat_idents)]
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#[macro_use]
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extern crate pyo3;
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use pyo3::{PyDict, PyModule, PyObject, PyResult, Python};
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use pyo3::py::{class, function, modinit};
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#[class]
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struct EmptyClass {}
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fn sum_as_string(a: i64, b: i64) -> String {
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format!("{}", a + b).to_string()
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}
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#[function]
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fn double(x: usize) -> usize {
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x * 2
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}
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/// This module is implemented in Rust.
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#[modinit(module_with_functions)]
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fn init_mod(py: Python, m: &PyModule) -> PyResult<()> {
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#[pyfn(m, "sum_as_string")]
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fn sum_as_string_py(_py: Python, a: i64, b: i64) -> PyResult<String> {
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let out = sum_as_string(a, b);
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return Ok(out);
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}
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#[pyfn(m, "no_parameters")]
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fn no_parameters() -> PyResult<usize> {
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return Ok(42);
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}
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m.add_class::<EmptyClass>().unwrap();
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m.add("foo", "bar").unwrap();
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m.add_function(wrap_function!(double)).unwrap();
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m.add("also_double", wrap_function!(double)(py)).unwrap();
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Ok(())
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}
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#[test]
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#[cfg(Py_3)]
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fn test_module_with_functions() {
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let gil = Python::acquire_gil();
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let py = gil.python();
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let d = PyDict::new(py);
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d.set_item("module_with_functions", unsafe { PyObject::from_owned_ptr(py, PyInit_module_with_functions()) }).unwrap();
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py.run("assert module_with_functions.__doc__ == 'This module is implemented in Rust.'", None, Some(d)).unwrap();
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py.run("assert module_with_functions.sum_as_string(1, 2) == '3'", None, Some(d)).unwrap();
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py.run("assert module_with_functions.no_parameters() == 42", None, Some(d)).unwrap();
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py.run("assert module_with_functions.foo == 'bar'", None, Some(d)).unwrap();
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py.run("assert module_with_functions.EmptyClass != None", None, Some(d)).unwrap();
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py.run("assert module_with_functions.double(3) == 6", None, Some(d)).unwrap();
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py.run("assert module_with_functions.also_double(3) == 6", None, Some(d)).unwrap();
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}
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