pyo3-ffi-pure

test-crates/pyo3-ffi-pure/Cargo.toml

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+[package]
+name = "pyo3-ffi-pure"
+version = "1.0.0"
+edition = "2018"
+
+[dependencies]
+pyo3-ffi = { path = "../../../pyo3/pyo3-ffi", features = ["extension-module"] }
+
+[lib]
+name = "pyo3_ffi_pure"
+crate-type = ["cdylib"]

test-crates/pyo3-ffi-pure/LICENSE

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+Copyright (c) 2022-present maturin contributors
+
+Permission is hereby granted, free of charge, to any
+person obtaining a copy of this software and associated
+documentation files (the "Software"), to deal in the
+Software without restriction, including without
+limitation the rights to use, copy, modify, merge,
+publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software
+is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice
+shall be included in all copies or substantial portions
+of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
+ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
+TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT
+SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
+IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+DEALINGS IN THE SOFTWARE.

test-crates/pyo3-ffi-pure/Readme.md

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+# pyo3-ffi-pure
+
+A package with pyo3-ffi bindings for testing maturin.
+
+## Usage
+
+```python
+import pyo3_ffi_pure
+assert pyo3_ffi_pure.sum(2, 40) == 42
+```
+
+## Testing
+
+Install `pytest` and run:
+
+```bash
+pytest -v test_pyo3_ffi_pure.py
+```

test-crates/pyo3-ffi-pure/pyproject.toml

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+[build-system]
+requires = ["maturin>=0.12,<0.13"]
+build-backend = "maturin"
+
+[project]
+name = "pyo3-ffi-pure"
+classifiers = [
+    "Programming Language :: Rust"
+]
+description = "Tests compilation of packages using pyo3-ffi bindings"
+readme = "Readme.md"
+maintainers = [
+    {name = "messense", email = "[email protected]"}
+]
+license = { file = "LICENSE" }

test-crates/pyo3-ffi-pure/src/lib.rs

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+use pyo3_ffi::*;
+use std::os::raw::c_char;
+
+#[allow(non_snake_case)]
+#[no_mangle]
+pub unsafe extern "C" fn PyInit_pyo3_ffi_pure() -> *mut PyObject {
+    let module_name = "pyo3_ffi_pure\0".as_ptr() as *const c_char;
+    let init = PyModuleDef {
+        m_base: PyModuleDef_HEAD_INIT,
+        m_name: module_name,
+        m_doc: std::ptr::null(),
+        m_size: 0,
+        m_methods: std::ptr::null_mut(),
+        m_slots: std::ptr::null_mut(),
+        m_traverse: None,
+        m_clear: None,
+        m_free: None,
+    };
+    let mptr = PyModule_Create(Box::into_raw(Box::new(init)));
+
+    let wrapped_sum = PyMethodDef {
+        ml_name: "sum\0".as_ptr() as *const c_char,
+        ml_meth: Some(std::mem::transmute::<PyCFunctionWithKeywords, PyCFunction>(
+            sum,
+        )),
+        ml_flags: METH_VARARGS,
+        ml_doc: std::ptr::null_mut(),
+    };
+    PyModule_AddObject(
+        mptr,
+        "sum\0".as_ptr() as *const c_char,
+        PyCFunction_NewEx(
+            Box::into_raw(Box::new(wrapped_sum)),
+            std::ptr::null_mut(),
+            PyUnicode_InternFromString(module_name),
+        ),
+    );
+
+    mptr
+}
+
+#[no_mangle]
+pub unsafe extern "C" fn sum(
+    _self: *mut PyObject,
+    args: *mut PyObject,
+    _kwds: *mut PyObject,
+) -> *mut PyObject {
+    // this is a minimal test of compilation, not good example code
+    let val_a = PyTuple_GET_ITEM(args, 0);
+    let val_b = PyTuple_GET_ITEM(args, 1);
+    let res: i64 = PyLong_AsLongLong(val_a) + PyLong_AsLongLong(val_b);
+    PyLong_FromLongLong(res)
+}

test-crates/pyo3-ffi-pure/test_pyo3_ffi_pure.py

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+#!/usr/bin/env python3
+
+import pyo3_ffi_pure
+
+def test_static():
+    assert pyo3_ffi_pure.sum(2, 40) == 42