[squash-me] revert argparse action and move checking up

 * previous patches squashed
 * removed argparse action solution
 * move the checking of arg to the beginning of the main function to
   preceed all other analysis steps
 * same checking is introduced at the beginning of check's main function

analyzer/codechecker_analyzer/cmd/analyze.py

@@ -817,6 +817,11 @@ def main(args):
     """
     logger.setup_logger(args.verbose if 'verbose' in args else None)
 
+    # CTU loading mode is only meaningful if CTU itself is enabled.
+    if 'ctu_ast_mode' in args and 'ctu_phases' not in args:
+        LOG.error("Analyzer option 'ctu-ast-mode' requires CTU mode enabled")
+        sys.exit(1)
+
     try:
         cmd_config.check_config_file(args)
     except FileNotFoundError as fnerr:
@@ -857,11 +862,6 @@ def main(args):
     # Process the skip list if present.
     skip_handler = __get_skip_handler(args)
 
-    # CTU loading mode is only meaningful if CTU itself is enabled.
-    if 'ctu_ast_mode' in args and 'ctu_phases' not in args:
-        LOG.error("Analyzer option 'ctu-ast-mode' requires CTU mode enabled")
-        sys.exit(1)
-
     # Enable alpha uniqueing by default if ctu analysis is used.
     if 'none' in args.compile_uniqueing and 'ctu_phases' in args:
         args.compile_uniqueing = "alpha"

analyzer/codechecker_analyzer/cmd/check.py

@@ -14,6 +14,7 @@
 import argparse
 import os
 import shutil
+import sys
 import tempfile
 
 from codechecker_analyzer import analyzer_context
@@ -731,6 +732,10 @@ def main(args):
 
     logger.setup_logger(args.verbose if 'verbose' in args else None)
 
+    if 'ctu_ast_mode' in args and 'ctu_phases' not in args:
+        LOG.error("Analyzer option 'ctu-ast-mode' requires CTU mode enabled")
+        sys.exit(1)
+
     def __update_if_key_exists(source, target, key):
         """Append the source Namespace's element with 'key' to target with
         the same key, but only if it exists."""