[Data API] Array Object Implementation (#261)

* Refactoring of basic functionality to create an empty Array
* Replace dim4 with CShape
* Add tests for array api. Minor fixes. Update CI
* Add arithmetic operators w/o tests
* Fix array init bug. Add __getitem__. Change pytest for active debug mode
* Add reflected arithmetic and array operators
* Place TODO for repr
* Add bitwise operators. Add in-place operators. Add missing reflected operators
* Add tests for arithmetic operators
* Added to_list and to_ctypes_array
* Fix bug when scalar is empty returns None
* Fix typing in array object. Add tests
* Change tests and found bug with reflected operators
* Fix reflected operators bug. Add test coverage for the rest of the arithmetic operators
* Add required by specification methods
* Change utils. Add docstrings
* Add docstrings for operators
* Add docstrings for other operators. Remove docstrings from mocks
* Change tags and typings
* Change typings from python 3.10 to python 3.8
* Add readme with reference to run tests
* Revert changes accidentally made in original array
* Add constructor initialization warning. Add Note on deviation from spec. Dump minimal numpy version required.
* Fix warning messages for non-standard functions
* Add NOTE tag to functions that are not a part of spec but custom solutions

---------

Co-authored-by: Anton <[email protected]>

Author: roaffix

.github/workflows/build.yaml

@@ -0,0 +1,29 @@
+name: Run Tests
+
+on: [push]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v1
+
+      - name: Set up Python 3.10
+        uses: actions/setup-python@v1
+        with:
+          python-version: "3.10"
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r requirements.txt
+
+      - name: Test with pytest
+        run: pytest
+
+      - name: Install AF
+        run: apt install arrayfire
+
+      - name: Test array_api
+        run: python -m pytest arrayfire/array_api

.gitignore

@@ -42,6 +42,7 @@ htmlcov/
 nosetests.xml
 coverage.xml
 *,cover
+.pytest_cache
 
 # Translations
 *.mo
@@ -56,6 +57,8 @@ docs/_build/
 # PyBuilder
 target/
 
-# IDE
-.idea
-.vscode
+# mypy
+.mypy_cache
+
+# Virtual environment
+venv

arrayfire/array_api/README.md

@@ -0,0 +1,9 @@
+# ArrayFire ArrayAPI
+
+Specification Documentation: [source](https://data-apis.org/array-api/latest/purpose_and_scope.html)
+
+Run tests
+
+```bash
+python -m pytest arrayfire/array_api
+```

arrayfire/array_api/__init__.py

@@ -0,0 +1,9 @@
+__all__ = [
+    # array objects
+    "Array",
+    # dtypes
+    "int16", "int32", "int64", "uint8", "uint16", "uint32", "uint64", "float32", "float64",
+    "complex64", "complex128", "bool"]
+
+from .array_object import Array
+from .dtypes import bool, complex64, complex128, float32, float64, int16, int32, int64, uint8, uint16, uint32, uint64