first commit

libraries/FastLED/ci/tests/test_wasm_clang_format.py

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+import os
+import unittest
+from concurrent.futures import ThreadPoolExecutor
+
+from ci.paths import PROJECT_ROOT
+
+NUM_WORKERS = (os.cpu_count() or 1) * 4
+
+
+WASM_ROOT = PROJECT_ROOT / "src" / "platforms" / "wasm"
+
+
+class TestMissingPragmaOnce(unittest.TestCase):
+
+    def check_file(self, file_path: str) -> list[str]:
+        """Check if a header file has #pragma once directive or if a cpp file incorrectly has it."""
+        failings: list[str] = []
+
+        with open(file_path, "r", encoding="utf-8", errors="ignore") as f:
+            if file_path.endswith(".h") or file_path.endswith(".cpp"):
+                content = f.read()
+                # For header files, check if #pragma once is missing
+                if "EM_ASM_" in content and "// clang-format off\n" not in content:
+                    if "clang-format off" not in content:
+                        failings.append(f"Missing clang-format off in {file_path}")
+                    else:
+                        failings.append(f"clang-format off is malformed in {file_path}")
+
+        return failings
+
+    def test_esm_asm_and_clang_format(self) -> None:
+        files_to_check = []
+        current_dir = None
+
+        # Collect files to check
+        for root, _, files in os.walk(WASM_ROOT):
+            # Log when we enter a new directory
+            rel_path = os.path.relpath(root, WASM_ROOT)
+            if current_dir != rel_path:
+                current_dir = rel_path
+                print(f"Traversing directory: {rel_path}")
+
+            for file in files:
+                if file.endswith((".h", ".cpp")):  # Check both header and cpp files
+                    file_path = os.path.join(root, file)
+                    files_to_check.append(file_path)
+
+        print(f"Found {len(files_to_check)} files to check")
+
+        # Process files in parallel
+        all_failings = []
+        with ThreadPoolExecutor(max_workers=NUM_WORKERS) as executor:
+            futures = [
+                executor.submit(self.check_file, file_path)
+                for file_path in files_to_check
+            ]
+            for future in futures:
+                all_failings.extend(future.result())
+
+        # Report results
+        if all_failings:
+            msg = (
+                f"Found {len(all_failings)} clang format issues in wasm: \n"
+                + "\n".join(all_failings)
+            )
+            for failing in all_failings:
+                print(failing)
+            print(
+                "Please be aware you need // then one space then clang-format off then a new line exactly"
+            )
+            self.fail(msg)
+        else:
+            print("All files passed the check.")
+
+        print(f"Clange format check completed. Processed {len(files_to_check)} files.")
+
+
+if __name__ == "__main__":
+    unittest.main()