Addressed mypy findings for aadl2glueC.

dmt/aadl2glueC.py

@@ -81,6 +81,8 @@ but with an extra call to OnFinal at the end.
 import os
 import sys
 import hashlib
+import pickle
+import tempfile
 from distutils import spawn
 
 from typing import cast, Optional, Dict, List, Tuple, Set, Any  # NOQA pylint: disable=unused-import
@@ -154,8 +156,8 @@ of each SUBPROGRAM param.'''
             except:
                 panic("The configured cache folder:\n\n\t" + projectCache +
                       "\n\n...is not there!\n")
-    cachedModelExists = False
     aadlASTcache = None
+    astInfo = None
     if projectCache is not None:
         filehash = hashlib.md5()
         for each in sorted(sys.argv[1:]):
@@ -167,15 +169,10 @@ of each SUBPROGRAM param.'''
             print("[DMT] No cached AADL model found for",
                   ",".join(sys.argv[1:]))
         else:
-            cachedModelExists = True
             print("[DMT] Reusing cached AADL model for",
                   ",".join(sys.argv[1:]))
-
-    import pickle
-    if cachedModelExists:
-        astInfo = pickle.load(open(aadlASTcache, 'rb'), fix_imports=False)
-    else:
-        import tempfile
+            astInfo = pickle.load(open(aadlASTcache, 'rb'), fix_imports=False)
+    if astInfo is None:
         f = tempfile.NamedTemporaryFile(delete=False)
         astFile = f.name
         f.close()
@@ -547,18 +544,16 @@ def main() -> None:
             uniqueDataFiles[param._signal._asnFilename][sp._language].append(sp)
 
     asn1files = list(uniqueDataFiles.keys())
-    asnFile = None  # type: Optional[str]
     if len(asn1files) == 1:
         asnFile = asn1files[0]
         commonPy.asnParser.ParseAsnFileList(asn1files)
     elif asn1files:
         panic("There appear to be more than one ASN.1 files referenced (%s)..." % str(asn1files))
 
-    if asnFile is not None:
-        inform("Checking that all base nodes have mandatory ranges set in %s..." % asnFile)
-        names = commonPy.asnParser.g_names
-        for node in names.values():
-            verify.VerifyRanges(node, names)
+    inform("Checking that all base nodes have mandatory ranges set in %s..." % asnFile)
+    names = commonPy.asnParser.g_names
+    for node in names.values():
+        verify.VerifyRanges(node, names)
 
     SystemsAndImplementations = commonPy.aadlAST.g_subProgramImplementations[:]
     SystemsAndImplementations.extend(commonPy.aadlAST.g_threadImplementations[:])