Support traits on return value and parameters #200

	name: clang-format check
	on: [pull_request]

	jobs:
	clang-format-check:
	name: clang-format
	runs-on: "ubuntu-20.04"
	steps:
	- name: Setup environment
	run: \|
	sudo apt-get install -yqq clang-format-11
	- name: Checkout llvm-dialects
	uses: actions/checkout@v2
	- name: Run clang-format
	run: \|
	git diff ${{ github.base_ref }} -U0 --no-color -- '*/.cpp' '*/.cc' '*/.h' '*/.hh' \
	\| clang-format-diff-11 -p1 >not-formatted.diff 2>&1
	- name: Check formatting
	run: \|
	if ! grep -q '[^[:space:]]' not-formatted.diff ; then
	echo "Code formatted. Success."
	else
	echo "Code not formatted."
	echo "Please run clang-format-diff on your changes and push again:"
	echo " git diff ${{ github.base_ref }} -U0 --no-color \| clang-format-diff -p1 -i"
	echo ""
	echo "Tip: you can disable clang-format checks: https://clang.llvm.org/docs/ClangFormatStyleOptions.html#disabling-formatting-on-a-piece-of-code"
	echo ""
	echo "Diff:"
	cat not-formatted.diff
	echo ""
	exit 3
	fi

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