linter: fix platform selection

Author: Gerit Wagner

search_query/linter.py

@@ -11,10 +11,10 @@
 from search_query.utils import format_query_string_pos
 
 
-def run_linter(search_string: str, syntax: str) -> list:
+def run_linter(search_string: str, platform: str) -> list:
     """Run the linter on the search string"""
 
-    parser = search_query.parser.PARSERS[syntax](search_string)
+    parser = search_query.parser.PARSERS[platform](search_string)
     try:
         parser.parse()
     except Exception:  # pylint: disable=broad-except
@@ -34,7 +34,14 @@ def pre_commit_hook() -> int:
         print(e)
         return ExitCodes.FAIL
 
-    linter_messages = run_linter(search_file.search_string, search_file.search_string)
+    if platform not in search_query.parser.PARSERS:
+        print(
+            f"Unknown platform: {platform}."
+            f"Must be one of {search_query.parser.PARSERS}"
+        )
+        return ExitCodes.FAIL
+
+    linter_messages = run_linter(search_file.search_string, platform)
 
     if linter_messages:
         for message in linter_messages: