tools: Add check_source.sh

This script checks for common programming errors in the Python code of
this repository.

It might be symlinked by `.git/hooks/pre-commit` to make sure those
errors do not end up in the Git history.

1 files changed, 14 insertions, 0 deletions

diff --git a/tools/check_source.sh b/tools/check_source.sh
new file mode 100755
index 0000000..a401418
--- /dev/null
+++ b/tools/check_source.sh
@@ -0,0 +1,14 @@
+#!/bin/sh
+
+
+set -euf
+
+
+script="$(realpath "$0")"
+tools="$(dirname "$script")"
+root="$(dirname "$tools")"
+
+
+black "$root"
+mypy --strict "$root"
+flake8 "$root"