1 files changed, 52 insertions, 0 deletions
diff --git a/python/mozbuild/mozbuild/backend/static_analysis.py b/python/mozbuild/mozbuild/backend/static_analysis.py
new file mode 100644
index 0000000000..2b3ce96e75
--- /dev/null
+++ b/python/mozbuild/mozbuild/backend/static_analysis.py
@@ -0,0 +1,52 @@
+# This Source Code Form is subject to the terms of the Mozilla Public
+# License, v. 2.0. If a copy of the MPL was not distributed with this file,
+# You can obtain one at http://mozilla.org/MPL/2.0/.
+
+# This module provides a backend static-analysis, like clang-tidy and coverity.
+# The main difference between this and the default database backend is that this one
+# tracks folders that can be built in the non-unified environment and generates
+# the coresponding build commands for the files.
+
+import os
+
+import mozpack.path as mozpath
+
+from mozbuild.compilation.database import CompileDBBackend
+
+
+class StaticAnalysisBackend(CompileDBBackend):
+    def _init(self):
+        CompileDBBackend._init(self)
+        self.non_unified_build = []
+
+        # List of directories can be built outside of the unified build system.
+        with open(
+            mozpath.join(self.environment.topsrcdir, "build", "non-unified-compat")
+        ) as fh:
+            content = fh.readlines()
+            self.non_unified_build = [
+                mozpath.join(self.environment.topsrcdir, line.strip())
+                for line in content
+            ]
+
+    def _build_cmd(self, cmd, filename, unified):
+        cmd = list(cmd)
+        # Maybe the file is in non-unified environment or it resides under a directory
+        # that can also be built in non-unified environment
+        if unified is None or any(
+            filename.startswith(path) for path in self.non_unified_build
+        ):
+            cmd.append(filename)
+        else:
+            cmd.append(unified)
+
+        return cmd
+
+    def _outputfile_path(self):
+        database_path = os.path.join(self.environment.topobjdir, "static-analysis")
+
+        if not os.path.exists(database_path):
+            os.mkdir(database_path)
+
+        # Output the database (a JSON file) to objdir/static-analysis/compile_commands.json
+        return mozpath.join(database_path, "compile_commands.json")