feat: add python bindings for argus

.gitignore

@@ -1,11 +1,10 @@
-# Created by https://www.toptal.com/developers/gitignore/api/rust
-# Edit at https://www.toptal.com/developers/gitignore?templates=rust
-
+# Created by https://www.toptal.com/developers/gitignore/api/rust,python
+# Edit at https://www.toptal.com/developers/gitignore?templates=rust,python
 ### Rust ###
 # Generated by Cargo
 # will have compiled files and executables
 debug/
-target/
+/target
 
 # Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
 # More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
@@ -17,4 +16,176 @@ Cargo.lock
 # MSVC Windows builds of rustc generate these, which store debugging information
 *.pdb
 
-# End of https://www.toptal.com/developers/gitignore/api/rust
+### Python ###
+# Byte-compiled / optimized / DLL files
+__pycache__/
+*.py[cod]
+*$py.class
+
+# C extensions
+*.so
+
+# Distribution / packaging
+.Python
+build/
+develop-eggs/
+dist/
+downloads/
+eggs/
+.eggs/
+lib/
+lib64/
+parts/
+sdist/
+var/
+wheels/
+share/python-wheels/
+*.egg-info/
+.installed.cfg
+*.egg
+MANIFEST
+
+# PyInstaller
+#  Usually these files are written by a python script from a template
+#  before PyInstaller builds the exe, so as to inject date/other infos into it.
+*.manifest
+*.spec
+
+# Installer logs
+pip-log.txt
+pip-delete-this-directory.txt
+
+# Unit test / coverage reports
+htmlcov/
+.tox/
+.nox/
+.coverage
+.coverage.*
+.cache
+nosetests.xml
+coverage.xml
+*.cover
+*.py,cover
+.hypothesis/
+.pytest_cache/
+cover/
+
+# Translations
+*.mo
+*.pot
+
+# Django stuff:
+*.log
+local_settings.py
+db.sqlite3
+db.sqlite3-journal
+
+# Flask stuff:
+instance/
+.webassets-cache
+
+# Scrapy stuff:
+.scrapy
+
+# Sphinx documentation
+docs/_build/
+
+# PyBuilder
+.pybuilder/
+target/
+
+# Jupyter Notebook
+.ipynb_checkpoints
+
+# IPython
+profile_default/
+ipython_config.py
+
+# pyenv
+#   For a library or package, you might want to ignore these files since the code is
+#   intended to run in multiple environments; otherwise, check them in:
+# .python-version
+
+# pipenv
+#   According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control.
+#   However, in case of collaboration, if having platform-specific dependencies or dependencies
+#   having no cross-platform support, pipenv may install dependencies that don't work, or not
+#   install all needed dependencies.
+#Pipfile.lock
+
+# poetry
+#   Similar to Pipfile.lock, it is generally recommended to include poetry.lock in version control.
+#   This is especially recommended for binary packages to ensure reproducibility, and is more
+#   commonly ignored for libraries.
+#   https://python-poetry.org/docs/basic-usage/#commit-your-poetrylock-file-to-version-control
+#poetry.lock
+
+# pdm
+#   Similar to Pipfile.lock, it is generally recommended to include pdm.lock in version control.
+#pdm.lock
+#   pdm stores project-wide configurations in .pdm.toml, but it is recommended to not include it
+#   in version control.
+#   https://pdm.fming.dev/#use-with-ide
+.pdm.toml
+
+# PEP 582; used by e.g. github.com/David-OConnor/pyflow and github.com/pdm-project/pdm
+__pypackages__/
+
+# Celery stuff
+celerybeat-schedule
+celerybeat.pid
+
+# SageMath parsed files
+*.sage.py
+
+# Environments
+.env
+.venv
+env/
+venv/
+ENV/
+env.bak/
+venv.bak/
+
+# Spyder project settings
+.spyderproject
+.spyproject
+
+# Rope project settings
+.ropeproject
+
+# mkdocs documentation
+/site
+
+# mypy
+.mypy_cache/
+.dmypy.json
+dmypy.json
+
+# Pyre type checker
+.pyre/
+
+# pytype static type analyzer
+.pytype/
+
+# Cython debug symbols
+cython_debug/
+
+# PyCharm
+#  JetBrains specific template is maintained in a separate JetBrains.gitignore that can
+#  be found at https://github.com/github/gitignore/blob/main/Global/JetBrains.gitignore
+#  and can be added to the global gitignore or merged into this file.  For a more nuclear
+#  option (not recommended) you can uncomment the following to ignore the entire idea folder.
+#.idea/
+
+### Python Patch ###
+# Poetry local configuration file - https://python-poetry.org/docs/configuration/#local-configuration
+poetry.toml
+
+# ruff
+.ruff_cache/
+
+# LSP config files
+pyrightconfig.json
+
+# End of https://www.toptal.com/developers/gitignore/api/rust,python

Cargo.toml

@@ -1,2 +1,2 @@
 [workspace]
-members = ["argus", "argus-core", "argus-semantics"]
+members = ["argus", "argus-core", "argus-semantics", "pyargus"]

pyargus/Cargo.toml

@@ -0,0 +1,13 @@
+[package]
+name = "pyargus"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+[lib]
+name = "pyargus"
+crate-type = ["cdylib"]
+
+[dependencies]
+argus-core = { version = "0.1.0", path = "../argus-core" }
+pyo3 = "0.18.1"

pyargus/pyproject.toml

@@ -0,0 +1,16 @@
+[build-system]
+requires = ["maturin>=0.14,<0.15"]
+build-backend = "maturin"
+
+[project]
+name = "pyargus"
+requires-python = ">=3.7"
+classifiers = [
+    "Programming Language :: Rust",
+    "Programming Language :: Python :: Implementation :: CPython",
+    "Programming Language :: Python :: Implementation :: PyPy",
+]
+
+
+[tool.maturin]
+features = ["pyo3/extension-module"]

pyargus/src/lib.rs

@@ -0,0 +1,210 @@
+use argus_core::expr::{BoolExpr, NumExpr};
+use argus_core::prelude::*;
+use pyo3::prelude::*;
+
+#[pyclass(name = "NumExpr", subclass)]
+#[derive(Clone)]
+struct PyNumExpr(Box<NumExpr>);
+
+#[pymethods]
+impl PyNumExpr {
+    fn __repr__(&self) -> String {
+        format!("{:?}", &self.0)
+    }
+
+    fn __neg__(&self) -> PyResult<Py<Negate>> {
+        Python::with_gil(|py| Py::new(py, Negate::new(self.clone())))
+    }
+
+    fn __add__(&self, other: &Self) -> PyResult<Py<Add>> {
+        Python::with_gil(|py| Py::new(py, Add::new(vec![self.clone(), other.clone()])))
+    }
+
+    fn __mul__(&self, other: &Self) -> PyResult<Py<Mul>> {
+        Python::with_gil(|py| Py::new(py, Mul::new(vec![self.clone(), other.clone()])))
+    }
+
+    fn __truediv__(&self, other: &Self) -> PyResult<Py<Div>> {
+        Python::with_gil(|py| Py::new(py, Div::new(self.clone(), other.clone())))
+    }
+
+    fn __abs__(&self) -> PyResult<Py<Abs>> {
+        Python::with_gil(|py| Py::new(py, Abs::new(self.clone())))
+    }
+}
+
+#[pyclass(extends=PyNumExpr)]
+struct ConstInt;
+
+#[pymethods]
+impl ConstInt {
+    #[new]
+    fn new(val: i64) -> (Self, PyNumExpr) {
+        (Self, PyNumExpr(Box::new(NumExpr::IntLit(val))))
+    }
+}
+
+#[pyclass(extends=PyNumExpr)]
+struct ConstUInt;
+
+#[pymethods]
+impl ConstUInt {
+    #[new]
+    fn new(val: u64) -> (Self, PyNumExpr) {
+        (Self, PyNumExpr(Box::new(NumExpr::UIntLit(val))))
+    }
+}
+
+#[pyclass(extends=PyNumExpr)]
+struct ConstFloat;
+
+#[pymethods]
+impl ConstFloat {
+    #[new]
+    fn new(val: f64) -> (Self, PyNumExpr) {
+        (Self, PyNumExpr(Box::new(NumExpr::FloatLit(val))))
+    }
+}
+
+#[pyclass(extends=PyNumExpr)]
+struct VarInt;
+
+#[pymethods]
+impl VarInt {
+    #[new]
+    fn new(name: String) -> (Self, PyNumExpr) {
+        (Self, PyNumExpr(Box::new(NumExpr::IntVar { name })))
+    }
+}
+
+#[pyclass(extends=PyNumExpr)]
+struct VarUInt;
+
+#[pymethods]
+impl VarUInt {
+    #[new]
+    fn new(name: String) -> (Self, PyNumExpr) {
+        (Self, PyNumExpr(Box::new(NumExpr::UIntVar { name })))
+    }
+}
+
+#[pyclass(extends=PyNumExpr)]
+struct VarFloat;
+
+#[pymethods]
+impl VarFloat {
+    #[new]
+    fn new(name: String) -> (Self, PyNumExpr) {
+        (Self, PyNumExpr(Box::new(NumExpr::FloatVar { name })))
+    }
+}
+
+#[pyclass(extends=PyNumExpr)]
+struct Negate;
+
+#[pymethods]
+impl Negate {
+    #[new]
+    fn new(arg: PyNumExpr) -> (Self, PyNumExpr) {
+        let arg = arg.0;
+        (Self, PyNumExpr(Box::new(NumExpr::Neg { arg })))
+    }
+}
+
+#[pyclass(extends=PyNumExpr)]
+struct Add;
+
+#[pymethods]
+impl Add {
+    #[new]
+    fn new(args: Vec<PyNumExpr>) -> (Self, PyNumExpr) {
+        let args: Vec<NumExpr> = args.into_iter().map(|arg| *arg.0).collect();
+        (Self, PyNumExpr(Box::new(NumExpr::Add { args })))
+    }
+}
+
+#[pyclass(extends=PyNumExpr)]
+struct Sub;
+
+#[pymethods]
+impl Sub {
+    #[new]
+    fn new(lhs: PyNumExpr, rhs: PyNumExpr) -> (Self, PyNumExpr) {
+        let lhs = lhs.0;
+        let rhs = rhs.0;
+        (Self, PyNumExpr(Box::new(NumExpr::Sub { lhs, rhs })))
+    }
+}
+
+#[pyclass(extends=PyNumExpr)]
+struct Mul;
+
+#[pymethods]
+impl Mul {
+    #[new]
+    fn new(args: Vec<PyNumExpr>) -> (Self, PyNumExpr) {
+        let args: Vec<NumExpr> = args.into_iter().map(|arg| *arg.0).collect();
+        (Self, PyNumExpr(Box::new(NumExpr::Mul { args })))
+    }
+}
+
+#[pyclass(extends=PyNumExpr)]
+struct Div;
+
+#[pymethods]
+impl Div {
+    #[new]
+    fn new(dividend: PyNumExpr, divisor: PyNumExpr) -> (Self, PyNumExpr) {
+        let dividend = dividend.0;
+        let divisor = divisor.0;
+        (Self, PyNumExpr(Box::new(NumExpr::Div { dividend, divisor })))
+    }
+}
+
+// #[pyclass(extends=PyNumExpr)]
+// struct Pow;
+//
+// #[pymethods]
+// impl Pow {
+//     #[new]
+//     fn new(base: PyNumExpr, exponent: PyNumExpr) -> (Self, PyNumExpr) {
+//         let base = base.0;
+//         let exponent = exponent.0;
+//         (Self, PyNumExpr(Box::new(NumExpr:: { base, exponent })))
+//     }
+// }
+
+#[pyclass(extends=PyNumExpr)]
+struct Abs;
+
+#[pymethods]
+impl Abs {
+    #[new]
+    fn new(arg: PyNumExpr) -> (Self, PyNumExpr) {
+        let arg = arg.0;
+        (Self, PyNumExpr(Box::new(NumExpr::Abs { arg })))
+    }
+}
+
+#[pyclass(name = "BoolExpr")]
+struct PyBoolExpr(BoolExpr);
+
+#[pymodule]
+fn pyargus(_py: Python, m: &PyModule) -> PyResult<()> {
+    m.add_class::<PyNumExpr>()?;
+    m.add_class::<ConstInt>()?;
+    m.add_class::<ConstUInt>()?;
+    m.add_class::<ConstFloat>()?;
+    m.add_class::<VarInt>()?;
+    m.add_class::<VarUInt>()?;
+    m.add_class::<VarFloat>()?;
+    m.add_class::<Negate>()?;
+    m.add_class::<Add>()?;
+    m.add_class::<Mul>()?;
+    m.add_class::<Div>()?;
+    // m.add_class::<Pow>()?;
+
+    m.add_class::<PyBoolExpr>()?;
+
+    Ok(())
+}