working on python support

Author: programmerjake

Cargo.toml

@@ -2,7 +2,7 @@
 # See Notices.txt for copyright information
 [package]
 name = "algebraics"
-version = "0.1.0"
+version = "0.1.1"
 authors = ["Jacob Lifshay <[email protected]>"]
 edition = "2018"
 license = "LGPL-2.1-or-later"
@@ -11,6 +11,14 @@ keywords = ["algebraic-numbers", "arbitrary-precision", "polynomials", "real-num
 repository = "https://salsa.debian.org/Kazan-team/algebraics"
 readme = "README.md"
 
+[features]
+default = []
+python-extension = ["pyo3", "pyo3/extension-module"]
+
+[lib]
+name = "algebraics"
+crate-type = ["rlib", "cdylib"]
+
 [dependencies]
 num-traits = "0.2"
 num-bigint = "0.2"
@@ -19,3 +27,4 @@ num-rational = "0.2"
 rand = "0.5"
 rand_pcg = "0.1.1"
 lazy_static = "1.4"
+pyo3 = { version = "0.8.0", optional = true }

pyproject.toml

@@ -0,0 +1,9 @@
+# SPDX-License-Identifier: LGPL-2.1-or-later
+# See Notices.txt for copyright information
+[build-system]
+requires = ["maturin"]
+build-backend = "maturin"
+
+[tool.maturin]
+bindings = "pyo3"
+cargo-extra-args = "--features python-extension"

rls.toml

@@ -0,0 +1 @@
+features = ["python-extension"]

src/lib.rs

@@ -11,6 +11,7 @@ pub(crate) mod lattice;
 pub mod mod_int;
 pub mod polynomial;
 pub mod prelude;
+pub mod python;
 pub(crate) mod quadratic_numbers;
 pub mod traits;
 pub mod util;

src/python.rs

@@ -0,0 +1,58 @@
+// SPDX-License-Identifier: LGPL-2.1-or-later
+// See Notices.txt for copyright information
+
+#![cfg(feature = "python-extension")]
+
+use crate::algebraic_numbers::RealAlgebraicNumber;
+use num_bigint::BigInt;
+use num_traits::Zero;
+use pyo3::prelude::*;
+use pyo3::types::PyAny;
+use pyo3::types::PyInt;
+
+// TODO: Switch to using BigInt's python conversions once they are implemented
+// see https://github.com/PyO3/pyo3/issues/543
+#[derive(Clone, Debug)]
+pub struct PyBigInt(pub BigInt);
+
+impl ToPyObject for PyBigInt {
+    fn to_object(&self, py: Python) -> PyObject {
+        // FIXME: implement
+        unimplemented!()
+    }
+}
+
+impl FromPyObject<'_> for PyBigInt {
+    fn extract(ob: &PyAny) -> PyResult<Self> {
+        // FIXME: implement
+        unimplemented!()
+    }
+}
+
+#[pyclass(name=RealAlgebraicNumber, module="algebraics")]
+struct RealAlgebraicNumberPy {
+    value: RealAlgebraicNumber,
+}
+
+#[pymethods]
+impl RealAlgebraicNumberPy {
+    #[new]
+    fn new(obj: &PyRawObject, value: Option<&PyInt>) {
+        match value {
+            None => obj.init(RealAlgebraicNumberPy {
+                value: RealAlgebraicNumber::zero(),
+            }),
+            Some(value) => {
+                // FIXME: implement
+                unimplemented!();
+            }
+        }
+    }
+    // FIXME: implement rest of methods
+}
+
+#[pymodule]
+fn algebraics(py: Python, m: &PyModule) -> PyResult<()> {
+    // FIXME: add module members
+    Ok(())
+}