1 files changed, 138 insertions, 0 deletions
diff --git a/python/mozbuild/mozbuild/code_analysis/utils.py b/python/mozbuild/mozbuild/code_analysis/utils.py
new file mode 100644
index 0000000000..e3931aa7e4
--- /dev/null
+++ b/python/mozbuild/mozbuild/code_analysis/utils.py
@@ -0,0 +1,138 @@
+# 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/.
+
+import logging
+
+import mozpack.path as mozpath
+import yaml
+
+from mozbuild.util import memoized_property
+
+
+class ClangTidyConfig(object):
+    def __init__(self, mozilla_src):
+        self._clang_tidy_config = self._get_clang_tidy_config(mozilla_src)
+
+    def _get_clang_tidy_config(self, mozilla_src):
+        try:
+            file_handler = open(
+                mozpath.join(mozilla_src, "tools", "clang-tidy", "config.yaml")
+            )
+            config = yaml.safe_load(file_handler)
+        except Exception:
+            self.log(
+                logging.ERROR,
+                "clang-tidy-config",
+                {},
+                "Looks like config.yaml is not valid, we are going to use default"
+                " values for the rest of the analysis for clang-tidy.",
+            )
+            return None
+        return config
+
+    @memoized_property
+    def checks(self):
+        """
+        Returns a list with all activated checks
+        """
+
+        checks = ["-*"]
+        try:
+            config = self._clang_tidy_config
+            for item in config["clang_checkers"]:
+                if item.get("publish", True):
+                    checks.append(item["name"])
+        except Exception:
+            self.log(
+                logging.ERROR,
+                "clang-tidy-config",
+                {},
+                "Looks like config.yaml is not valid, so we are unable to "
+                "determine default checkers, using '-checks=-*,mozilla-*'",
+            )
+            checks.append("mozilla-*")
+        finally:
+            return checks
+
+    @memoized_property
+    def checks_with_data(self):
+        """
+        Returns a list with all activated checks plus metadata for each check
+        """
+
+        checks_with_data = [{"name": "-*"}]
+        try:
+            config = self._clang_tidy_config
+            for item in config["clang_checkers"]:
+                if item.get("publish", True):
+                    checks_with_data.append(item)
+        except Exception:
+            self.log(
+                logging.ERROR,
+                "clang-tidy-config",
+                {},
+                "Looks like config.yaml is not valid, so we are unable to "
+                "determine default checkers, using '-checks=-*,mozilla-*'",
+            )
+            checks_with_data.append({"name": "mozilla-*", "reliability": "high"})
+        finally:
+            return checks_with_data
+
+    @memoized_property
+    def checks_config(self):
+        """
+        Returns the configuation for all checks
+        """
+
+        config_list = []
+        checks_config = {}
+        try:
+            config = self._clang_tidy_config
+            for checker in config["clang_checkers"]:
+                if checker.get("publish", True) and "config" in checker:
+                    for checker_option in checker["config"]:
+                        # Verify if the format of the Option is correct,
+                        # possibilities are:
+                        # 1. CheckerName.Option
+                        # 2. Option -> that will become CheckerName.Option
+                        if not checker_option["key"].startswith(checker["name"]):
+                            checker_option["key"] = "{}.{}".format(
+                                checker["name"], checker_option["key"]
+                            )
+                    config_list += checker["config"]
+            checks_config["CheckOptions"] = config_list
+        except Exception:
+            self.log(
+                logging.ERROR,
+                "clang-tidy-config",
+                {},
+                "Looks like config.yaml is not valid, so we are unable to "
+                "determine configuration for checkers, so using default",
+            )
+            checks_config = None
+        finally:
+            return checks_config
+
+    @memoized_property
+    def version(self):
+        """
+        Returns version of clang-tidy suitable for this configuration file
+        """
+
+        if "package_version" in self._clang_tidy_config:
+            return self._clang_tidy_config["package_version"]
+        self.log(
+            logging.ERROR,
+            "clang-tidy-confis",
+            {},
+            "Unable to find 'package_version' in the config.yml",
+        )
+        return None
+
+    @memoized_property
+    def platforms(self):
+        """
+        Returns a list of platforms suitable to work with `clang-tidy`
+        """
+        return self._clang_tidy_config.get("platforms", [])