feat: scaffold crate structure and implement core macros

Add the project skeleton, LICENSE files, README, Makefile, doc
examples, and the initial implementation of `#[func]`, `invoke!`,
and `select!` procedural macros.

1 files changed, 50 insertions, 0 deletions

diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..8176780
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,50 @@
+.PHONY: check clippy check-lock test-crate test-sync test-async expand fmt-expand lock
+
+# make check
+check: clippy expand fmt-expand test-crate test-sync test-async check-lock
+
+# make lock
+lock:
+	for f in doc/usage/*_expand.rs; do \
+		cp "$$f" "$$f.lock"; \
+	done
+
+# DO NOT RUN THEM
+
+clippy:
+	cargo clippy -- -D warnings
+
+test-crate:
+	cargo test
+
+test-sync:
+	cargo test -p might_be_async_test_sync --manifest-path test/Cargo.toml
+
+test-async:
+	cargo test -p might_be_async_test_async --features metadata_async --manifest-path test/Cargo.toml
+
+expand:
+	python3 scripts/expand_codes.py
+
+fmt-expand:
+	for f in doc/usage/*_expand.rs; do \
+		case "$$f" in *.lock) ;; *) rustfmt "$$f" --edition 2024 --config blank_lines_lower_bound=0 ;; esac; \
+	done
+
+check-lock:
+	errors=0; \
+	for lock in doc/usage/*_expand.rs.lock; do \
+		[ -f "$$lock" ] || continue; \
+		base="$${lock%.lock}"; \
+		if [ ! -f "$$base" ]; then \
+			echo "ERROR: $$lock has no matching source file"; \
+			errors=1; \
+		elif git --no-pager diff --no-index --quiet "$$lock" "$$base" 2>/dev/null; then \
+			:; \
+		else \
+			git --no-pager diff --no-index "$$lock" "$$base" || true; \
+			echo "ERROR: $$base differs from $$lock"; \
+			errors=1; \
+		fi; \
+	done; \
+	exit $$errors